Gerd Hoffmann
2007-Jan-23 14:53 UTC
[Xen-devel] [patch 0/5] libelf: new elf parser for xen
Hi, These patches add a new elf parser to xen. It can be used by both xen kernel (dom0 builder) and the tools (domU builder). The first patch adds the code to the tree, the following patches put it into use. Detailed descriptions come with the individual patches. The elf/linux domain builder rewrite comming ReallySoonNow[tm] will use the new elf parser as well. cheers, Gerd _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Gerd Hoffmann
2007-Jan-23 14:53 UTC
[Xen-devel] [patch 1/5] add libelf: an ELF binary parser library.
This patch adds a library with a small collection of helper functions
to parse and load elf binaries. The library handles endianess and
elfsize at runtime.
The patch also shuffles around the include files a bit. Now there is
*one* include file holding all the elf structures
(xen/include/public/elfstructs.h) which is included by everyone who
needs them.
It''s dead code with this patch only, putting the code into use happens
in followup patches.
Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
---
tools/libxc/xc_elf.h | 525 -----------------------------------
xen/arch/x86/boot/mkelf32.c | 2
xen/common/Makefile | 2
xen/common/libelf/Makefile | 4
xen/common/libelf/README | 1
xen/common/libelf/libelf-dominfo.c | 420 ++++++++++++++++++++++++++++
xen/common/libelf/libelf-loader.c | 156 ++++++++++
xen/common/libelf/libelf-private.h | 51 +++
xen/common/libelf/libelf-relocate.c | 345 +++++++++++++++++++++++
xen/common/libelf/libelf-tools.c | 225 +++++++++++++++
xen/include/public/elfstructs.h | 527 ++++++++++++++++++++++++++++++++++++
xen/include/public/libelf.h | 238 ++++++++++++++++
xen/include/xen/elf.h | 490 ---------------------------------
13 files changed, 1972 insertions(+), 1014 deletions(-)
Index: build-32-unstable-13377/xen/common/Makefile
==================================================================---
build-32-unstable-13377.orig/xen/common/Makefile
+++ build-32-unstable-13377/xen/common/Makefile
@@ -37,6 +37,8 @@ obj-$(CONFIG_XENCOMM) += xencomm.o
subdir-$(CONFIG_COMPAT) += compat
+subdir-y += libelf
+
# Object file contains changeset and compiler information.
version.o: $(BASEDIR)/include/xen/compile.h
Index: build-32-unstable-13377/xen/common/libelf/Makefile
==================================================================--- /dev/null
+++ build-32-unstable-13377/xen/common/libelf/Makefile
@@ -0,0 +1,4 @@
+obj-y += libelf-tools.o
+obj-y += libelf-loader.o
+obj-y += libelf-dominfo.o
+#obj-y += libelf-relocate.o
Index: build-32-unstable-13377/xen/common/libelf/README
==================================================================--- /dev/null
+++ build-32-unstable-13377/xen/common/libelf/README
@@ -0,0 +1 @@
+Take care, this code is used by both xen and tools ...
Index: build-32-unstable-13377/xen/common/libelf/libelf-dominfo.c
==================================================================--- /dev/null
+++ build-32-unstable-13377/xen/common/libelf/libelf-dominfo.c
@@ -0,0 +1,420 @@
+/*
+ * parse xen-specific informations out of elf kernel binaries.
+ */
+
+#include "libelf-private.h"
+
+/* ------------------------------------------------------------------------ */
+/* xen features */
+
+const char *elf_xen_feature_names[] = {
+ [XENFEAT_writable_page_tables] = "writable_page_tables",
+ [XENFEAT_writable_descriptor_tables] =
"writable_descriptor_tables",
+ [XENFEAT_auto_translated_physmap] = "auto_translated_physmap",
+ [XENFEAT_supervisor_mode_kernel] = "supervisor_mode_kernel",
+ [XENFEAT_pae_pgdir_above_4gb] = "pae_pgdir_above_4gb"
+};
+const int elf_xen_features + sizeof(elf_xen_feature_names) /
sizeof(elf_xen_feature_names[0]);
+
+int elf_xen_parse_features(const char *features,
+ uint32_t *supported,
+ uint32_t *required)
+{
+ char feature[64];
+ int pos, len, i;
+
+ if (NULL == features)
+ return 0;
+ for (pos = 0; features[pos] != ''\0''; pos += len)
+ {
+ memset(feature, 0, sizeof(feature));
+ for (len = 0;; len++)
+ {
+ if (len >= sizeof(feature)-1)
+ break;
+ if (features[pos + len] == ''\0'')
+ break;
+ if (features[pos + len] == ''|'')
+ {
+ len++;
+ break;
+ }
+ feature[len] = features[pos + len];
+ }
+
+ for (i = 0; i < elf_xen_features; i++)
+ {
+ if (!elf_xen_feature_names[i])
+ continue;
+ if (NULL != required && feature[0] == ''!'')
+ {
+ /* required */
+ if (0 == strcmp(feature + 1, elf_xen_feature_names[i]))
+ {
+ elf_xen_feature_set(i, supported);
+ elf_xen_feature_set(i, required);
+ break;
+ }
+ }
+ else
+ {
+ /* supported */
+ if (0 == strcmp(feature, elf_xen_feature_names[i]))
+ {
+ elf_xen_feature_set(i, supported);
+ break;
+ }
+ }
+ }
+ if (i == elf_xen_features)
+ return -1;
+ }
+ return 0;
+}
+
+/* ------------------------------------------------------------------------ */
+/* xen elf notes */
+
+int elf_xen_parse_note(struct elf_binary *elf,
+ struct elf_dom_parms *parms,
+ const elf_note *note)
+{
+/* *INDENT-OFF* */
+ static const struct {
+ char *name;
+ int str;
+ } note_desc[] = {
+ [XEN_ELFNOTE_ENTRY] = { "ENTRY", 0},
+ [XEN_ELFNOTE_HYPERCALL_PAGE] = { "HYPERCALL_PAGE", 0},
+ [XEN_ELFNOTE_VIRT_BASE] = { "VIRT_BASE", 0},
+ [XEN_ELFNOTE_PADDR_OFFSET] = { "PADDR_OFFSET", 0},
+ [XEN_ELFNOTE_HV_START_LOW] = { "HV_START_LOW", 0},
+ [XEN_ELFNOTE_XEN_VERSION] = { "XEN_VERSION", 1},
+ [XEN_ELFNOTE_GUEST_OS] = { "GUEST_OS", 1},
+ [XEN_ELFNOTE_GUEST_VERSION] = { "GUEST_VERSION", 1},
+ [XEN_ELFNOTE_LOADER] = { "LOADER", 1},
+ [XEN_ELFNOTE_PAE_MODE] = { "PAE_MODE", 1},
+ [XEN_ELFNOTE_FEATURES] = { "FEATURES", 1},
+ [XEN_ELFNOTE_BSD_SYMTAB] = { "BSD_SYMTAB", 1},
+ };
+/* *INDENT-ON* */
+
+ const char *str = NULL;
+ uint64_t val = 0;
+ int type = elf_uval(elf, note, type);
+
+ if ((type >= sizeof(note_desc) / sizeof(note_desc[0])) ||
+ (NULL == note_desc[type].name))
+ {
+ elf_err(elf, "%s: unknown xen elf note (0x%x)\n",
+ __FUNCTION__, type);
+ return -1;
+ }
+
+ if (note_desc[type].str)
+ {
+ str = elf_note_desc(elf, note);
+ elf_msg(elf, "%s: %s = \"%s\"\n", __FUNCTION__,
+ note_desc[type].name, str);
+ }
+ else
+ {
+ val = elf_note_numeric(elf, note);
+ elf_msg(elf, "%s: %s = 0x%" PRIx64 "\n", __FUNCTION__,
+ note_desc[type].name, val);
+ }
+
+ switch (type)
+ {
+ case XEN_ELFNOTE_LOADER:
+ strncpy(parms->loader, str, sizeof(parms->loader));
+ break;
+ case XEN_ELFNOTE_GUEST_OS:
+ strncpy(parms->guest_os, str, sizeof(parms->guest_os));
+ break;
+ case XEN_ELFNOTE_GUEST_VERSION:
+ strncpy(parms->guest_ver, str, sizeof(parms->guest_ver));
+ break;
+ case XEN_ELFNOTE_XEN_VERSION:
+ strncpy(parms->xen_ver, str, sizeof(parms->xen_ver));
+ break;
+ case XEN_ELFNOTE_PAE_MODE:
+ if (0 == strcmp(str, "yes"))
+ parms->pae = 2 /* extended_cr3 */;
+ if (strstr(str, "bimodal"))
+ parms->pae = 3 /* bimodal */;
+ break;
+ case XEN_ELFNOTE_BSD_SYMTAB:
+ if (0 == strcmp(str, "yes"))
+ parms->bsd_symtab = 1;
+ break;
+
+ case XEN_ELFNOTE_VIRT_BASE:
+ parms->virt_base = val;
+ break;
+ case XEN_ELFNOTE_ENTRY:
+ parms->virt_entry = val;
+ break;
+ case XEN_ELFNOTE_PADDR_OFFSET:
+ parms->elf_paddr_offset = val;
+ break;
+ case XEN_ELFNOTE_HYPERCALL_PAGE:
+ parms->virt_hypercall = val;
+ break;
+ case XEN_ELFNOTE_HV_START_LOW:
+ parms->virt_hv_start_low = val;
+ break;
+
+ case XEN_ELFNOTE_FEATURES:
+ if (0 != elf_xen_parse_features(str, parms->f_supported,
+ parms->f_required))
+ return -1;
+ break;
+
+ }
+ return 0;
+}
+
+/* ------------------------------------------------------------------------ */
+/* __xen_guest section */
+
+int elf_xen_parse_guest_info(struct elf_binary *elf,
+ struct elf_dom_parms *parms)
+{
+ const char *h;
+ char name[32], value[128];
+ int len;
+
+ h = parms->guest_info;
+ while (*h)
+ {
+ memset(name, 0, sizeof(name));
+ memset(value, 0, sizeof(value));
+ for (len = 0;; len++, h++) {
+ if (len >= sizeof(name)-1)
+ break;
+ if (*h == ''\0'')
+ break;
+ if (*h == '','')
+ {
+ h++;
+ break;
+ }
+ if (*h == ''='')
+ {
+ h++;
+ for (len = 0;; len++, h++) {
+ if (len >= sizeof(value)-1)
+ break;
+ if (*h == ''\0'')
+ break;
+ if (*h == '','')
+ {
+ h++;
+ break;
+ }
+ value[len] = *h;
+ }
+ break;
+ }
+ name[len] = *h;
+ }
+ elf_msg(elf, "%s: %s=\"%s\"\n", __FUNCTION__, name,
value);
+
+ /* strings */
+ if (0 == strcmp(name, "LOADER"))
+ strncpy(parms->loader, value, sizeof(parms->loader));
+ if (0 == strcmp(name, "GUEST_OS"))
+ strncpy(parms->guest_os, value, sizeof(parms->guest_os));
+ if (0 == strcmp(name, "GUEST_VER"))
+ strncpy(parms->guest_ver, value, sizeof(parms->guest_ver));
+ if (0 == strcmp(name, "XEN_VER"))
+ strncpy(parms->xen_ver, value, sizeof(parms->xen_ver));
+ if (0 == strcmp(name, "PAE"))
+ {
+ if (0 == strcmp(value, "yes[extended-cr3]"))
+ parms->pae = 2 /* extended_cr3 */;
+ else if (0 == strncmp(value, "yes", 3))
+ parms->pae = 1 /* yes */;
+ }
+ if (0 == strcmp(name, "BSD_SYMTAB"))
+ parms->bsd_symtab = 1;
+
+ /* longs */
+ if (0 == strcmp(name, "VIRT_BASE"))
+ parms->virt_base = strtoull(value, NULL, 0);
+ if (0 == strcmp(name, "VIRT_ENTRY"))
+ parms->virt_entry = strtoull(value, NULL, 0);
+ if (0 == strcmp(name, "ELF_PADDR_OFFSET"))
+ parms->elf_paddr_offset = strtoull(value, NULL, 0);
+ if (0 == strcmp(name, "HYPERCALL_PAGE"))
+ parms->virt_hypercall = (strtoull(value, NULL, 0) << 12) +
+ parms->virt_base;
+
+ /* other */
+ if (0 == strcmp(name, "FEATURES"))
+ if (0 != elf_xen_parse_features(value, parms->f_supported,
+ parms->f_required))
+ return -1;
+ }
+ return 0;
+}
+
+/* ------------------------------------------------------------------------ */
+/* sanity checks */
+
+static int elf_xen_note_check(struct elf_binary *elf,
+ struct elf_dom_parms *parms)
+{
+ if (NULL == parms->elf_note_start && NULL ==
parms->guest_info) {
+ int machine = elf_uval(elf, elf->ehdr, e_machine);
+ if (EM_386 == machine || EM_X86_64 == machine) {
+ elf_err(elf, "%s: ERROR: Not a Xen-ELF image: "
+ "No ELF notes or ''__xen_guest'' section
found.\n",
+ __FUNCTION__);
+ return -1;
+ }
+ return 0;
+ }
+
+ /* Check the contents of the Xen notes or guest string. */
+ if ( ( 0 == strlen(parms->loader) || strncmp(parms->loader,
"generic", 7) ) &&
+ ( 0 == strlen(parms->guest_os) || strncmp(parms->guest_os,
"linux", 5) ) )
+ {
+ elf_err(elf, "%s: ERROR: Will only load images built for the generic
"
+ "loader or Linux images", __FUNCTION__);
+ return -1;
+ }
+
+ if ( 0 == strlen(parms->xen_ver) || strncmp(parms->xen_ver,
"xen-3.0", 7) )
+ {
+ elf_err(elf, "%s: ERROR: Xen will only load images built for Xen
v3.0\n",
+ __FUNCTION__);
+ return -1;
+ }
+ return 0;
+}
+
+static int elf_xen_addr_calc_check(struct elf_binary *elf,
+ struct elf_dom_parms *parms)
+{
+ if (UNSET_ADDR != parms->elf_paddr_offset &&
+ UNSET_ADDR == parms->virt_base )
+ {
+ elf_err(elf, "%s: ERROR: ELF_PADDR_OFFSET set, VIRT_BASE unset\n",
+ __FUNCTION__);
+ return -1;
+ }
+
+ /* Initial guess for virt_base is 0 if it is not explicitly defined. */
+ if (UNSET_ADDR == parms->virt_base)
+ {
+ parms->virt_base = 0;
+ elf_msg(elf, "%s: VIRT_BASE unset, using 0x%" PRIx64 "\n",
+ __FUNCTION__, parms->virt_base);
+ }
+
+ /*
+ * If we are using the legacy __xen_guest section then elf_pa_off
+ * defaults to v_start in order to maintain compatibility with
+ * older hypervisors which set padd in the ELF header to
+ * virt_base.
+ *
+ * If we are using the modern ELF notes interface then the default
+ * is 0.
+ */
+ if (UNSET_ADDR == parms->elf_paddr_offset)
+ {
+ if (parms->elf_note_start)
+ parms->elf_paddr_offset = 0;
+ else
+ parms->elf_paddr_offset = parms->virt_base;
+ elf_msg(elf, "%s: ELF_PADDR_OFFSET unset, using 0x%" PRIx64
"\n",
+ __FUNCTION__, parms->elf_paddr_offset);
+ }
+
+ parms->virt_offset = parms->virt_base - parms->elf_paddr_offset;
+ parms->virt_kstart = elf->pstart + parms->virt_offset;
+ parms->virt_kend = elf->pend + parms->virt_offset;
+
+ if (UNSET_ADDR == parms->virt_entry)
+ parms->virt_entry = elf_uval(elf, elf->ehdr, e_entry);
+
+ elf_msg(elf, "%s: addresses:\n", __FUNCTION__);
+ elf_msg(elf, " virt_base = 0x%" PRIx64 "\n",
parms->virt_base);
+ elf_msg(elf, " elf_paddr_offset = 0x%" PRIx64 "\n",
parms->elf_paddr_offset);
+ elf_msg(elf, " virt_offset = 0x%" PRIx64 "\n",
parms->virt_offset);
+ elf_msg(elf, " virt_kstart = 0x%" PRIx64 "\n",
parms->virt_kstart);
+ elf_msg(elf, " virt_kend = 0x%" PRIx64 "\n",
parms->virt_kend);
+ elf_msg(elf, " virt_entry = 0x%" PRIx64 "\n",
parms->virt_entry);
+
+ if ( (parms->virt_kstart > parms->virt_kend) ||
+ (parms->virt_entry < parms->virt_kstart) ||
+ (parms->virt_entry > parms->virt_kend) ||
+ (parms->virt_base > parms->virt_kstart) )
+ {
+ elf_err(elf, "%s: ERROR: ELF start or entries are out of
bounds.\n",
+ __FUNCTION__);
+ return -1;
+ }
+
+ return 0;
+}
+
+/* ------------------------------------------------------------------------ */
+/* glue it all together ... */
+
+int elf_xen_parse(struct elf_binary *elf,
+ struct elf_dom_parms *parms)
+{
+ const elf_note *note;
+ const elf_shdr *shdr;
+ int xen_elfnotes = 0;
+ int i, count;
+
+ memset(parms, 0, sizeof(*parms));
+ parms->virt_base = UNSET_ADDR;
+ parms->virt_entry = UNSET_ADDR;
+ parms->virt_hypercall = UNSET_ADDR;
+ parms->virt_hv_start_low = UNSET_ADDR;
+ parms->elf_paddr_offset = UNSET_ADDR;
+
+ /* find and parse elf notes */
+ count = elf_shdr_count(elf);
+ for (i = 0; i < count; i++)
+ {
+ shdr = elf_shdr_by_index(elf, i);
+ if (0 == strcmp(elf_section_name(elf, shdr), "__xen_guest"))
+ parms->guest_info = elf_section_start(elf, shdr);
+ if (elf_uval(elf, shdr, sh_type) != SHT_NOTE)
+ continue;
+ parms->elf_note_start = elf_section_start(elf, shdr);
+ parms->elf_note_end = elf_section_end(elf, shdr);
+ for (note = parms->elf_note_start;
+ (void *)note < parms->elf_note_end;
+ note = elf_note_next(elf, note))
+ {
+ if (0 != strcmp(elf_note_name(elf, note), "Xen"))
+ continue;
+ if (0 != elf_xen_parse_note(elf, parms, note))
+ return -1;
+ xen_elfnotes++;
+ }
+ }
+
+ if (!xen_elfnotes && parms->guest_info)
+ {
+ parms->elf_note_start = NULL;
+ parms->elf_note_end = NULL;
+ elf_msg(elf, "%s: __xen_guest: \"%s\"\n", __FUNCTION__,
+ parms->guest_info);
+ elf_xen_parse_guest_info(elf, parms);
+ }
+
+ if (0 != elf_xen_note_check(elf, parms))
+ return -1;
+ if (0 != elf_xen_addr_calc_check(elf, parms))
+ return -1;
+ return 0;
+}
Index: build-32-unstable-13377/xen/common/libelf/libelf-loader.c
==================================================================--- /dev/null
+++ build-32-unstable-13377/xen/common/libelf/libelf-loader.c
@@ -0,0 +1,156 @@
+/*
+ * parse and load elf binaries
+ */
+
+#include "libelf-private.h"
+
+/* ------------------------------------------------------------------------ */
+
+int elf_init(struct elf_binary *elf, const char *image, size_t size)
+{
+ const elf_shdr *shdr;
+ uint64_t i, count, section, offset;
+
+ if (!elf_is_elfbinary(image))
+ {
+ elf_err(elf, "%s: not an ELF binary\n", __FUNCTION__);
+ return -1;
+ }
+
+ memset(elf, 0, sizeof(*elf));
+ elf->image = image;
+ elf->size = size;
+ elf->ehdr = (elf_ehdr *) image;
+ elf->class = elf->ehdr->e32.e_ident[EI_CLASS];
+ elf->data = elf->ehdr->e32.e_ident[EI_DATA];
+
+ /* sanity check phdr */
+ offset = elf_uval(elf, elf->ehdr, e_phoff) +
+ elf_uval(elf, elf->ehdr, e_phentsize) * elf_phdr_count(elf);
+ if (offset > elf->size)
+ {
+ elf_err(elf, "%s: phdr overflow (off %" PRIx64 " > size
%lx)\n",
+ __FUNCTION__, offset, (unsigned long)elf->size);
+ return -1;
+ }
+
+ /* sanity check shdr */
+ offset = elf_uval(elf, elf->ehdr, e_shoff) +
+ elf_uval(elf, elf->ehdr, e_shentsize) * elf_shdr_count(elf);
+ if (offset > elf->size)
+ {
+ elf_err(elf, "%s: shdr overflow (off %" PRIx64 " > size
%lx)\n",
+ __FUNCTION__, offset, (unsigned long)elf->size);
+ return -1;
+ }
+
+ /* find section string table */
+ section = elf_uval(elf, elf->ehdr, e_shstrndx);
+ shdr = elf_shdr_by_index(elf, section);
+ if (NULL != shdr)
+ elf->sec_strtab = elf_section_start(elf, shdr);
+
+ /* find symbol table, symbol string table */
+ count = elf_shdr_count(elf);
+ for (i = 0; i < count; i++)
+ {
+ shdr = elf_shdr_by_index(elf, i);
+ if (elf_uval(elf, shdr, sh_type) != SHT_SYMTAB)
+ continue;
+ elf->sym_tab = shdr;
+ shdr = elf_shdr_by_index(elf, elf_uval(elf, shdr, sh_link));
+ if (NULL == shdr)
+ {
+ elf->sym_tab = NULL;
+ continue;
+ }
+ elf->sym_strtab = elf_section_start(elf, shdr);
+ break;
+ }
+ return 0;
+}
+
+#ifndef __XEN__
+void elf_set_logfile(struct elf_binary *elf, FILE * log, int verbose)
+{
+ elf->log = log;
+ elf->verbose = verbose;
+}
+#else
+void elf_set_verbose(struct elf_binary *elf)
+{
+ elf->verbose = 1;
+}
+#endif
+
+void elf_parse_binary(struct elf_binary *elf)
+{
+ const elf_phdr *phdr;
+ uint64_t low = -1;
+ uint64_t high = 0;
+ uint64_t i, count, paddr, memsz;
+
+ count = elf_uval(elf, elf->ehdr, e_phnum);
+ for (i = 0; i < count; i++)
+ {
+ phdr = elf_phdr_by_index(elf, i);
+ if (!elf_phdr_is_loadable(elf, phdr))
+ continue;
+ paddr = elf_uval(elf, phdr, p_paddr);
+ memsz = elf_uval(elf, phdr, p_memsz);
+ elf_msg(elf, "%s: phdr: paddr=0x%" PRIx64
+ " memsz=0x%" PRIx64 "\n", __FUNCTION__, paddr, memsz);
+ if (low > paddr)
+ low = paddr;
+ if (high < paddr + memsz)
+ high = paddr + memsz;
+ }
+ elf->pstart = low;
+ elf->pend = high;
+ elf_msg(elf, "%s: memory: 0x%" PRIx64 " -> 0x%"
PRIx64 "\n",
+ __FUNCTION__, elf->pstart, elf->pend);
+}
+
+void elf_load_binary(struct elf_binary *elf)
+{
+ const elf_phdr *phdr;
+ uint64_t i, count, paddr, offset, filesz, memsz;
+ char *dest;
+
+ count = elf_uval(elf, elf->ehdr, e_phnum);
+ for (i = 0; i < count; i++)
+ {
+ phdr = elf_phdr_by_index(elf, i);
+ if (!elf_phdr_is_loadable(elf, phdr))
+ continue;
+ paddr = elf_uval(elf, phdr, p_paddr);
+ offset = elf_uval(elf, phdr, p_offset);
+ filesz = elf_uval(elf, phdr, p_filesz);
+ memsz = elf_uval(elf, phdr, p_memsz);
+ dest = elf_get_ptr(elf, paddr);
+ memcpy(dest, elf->image + offset, filesz);
+ memset(dest + filesz, 0, memsz - filesz);
+ }
+}
+
+void *elf_get_ptr(struct elf_binary *elf, unsigned long addr)
+{
+ return elf->dest + addr - elf->pstart;
+}
+
+uint64_t elf_lookup_addr(struct elf_binary * elf, const char *symbol)
+{
+ const elf_sym *sym;
+ uint64_t value;
+
+ sym = elf_sym_by_name(elf, symbol);
+ if (NULL == sym)
+ {
+ elf_err(elf, "%s: not found: %s\n", __FUNCTION__, symbol);
+ return -1;
+ }
+ value = elf_uval(elf, sym, st_value);
+ elf_msg(elf, "%s: symbol \"%s\" at 0x%" PRIx64
"\n", __FUNCTION__,
+ symbol, value);
+ return value;
+}
Index: build-32-unstable-13377/xen/common/libelf/libelf-private.h
==================================================================--- /dev/null
+++ build-32-unstable-13377/xen/common/libelf/libelf-private.h
@@ -0,0 +1,51 @@
+#ifdef __XEN__
+
+#include <xen/string.h>
+#include <xen/lib.h>
+#include <public/elfnote.h>
+#include <public/libelf.h>
+
+#define elf_msg(elf, fmt, args ... ) \
+ if (elf->verbose) printk(fmt, ## args )
+#define elf_err(elf, fmt, args ... ) \
+ printk(fmt, ## args )
+
+#define strtoull(str, end, base) simple_strtoull(str, end, base)
+#define bswap_16(x) \
+ ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8))
+#define bswap_32(x) \
+ ( (((x) & 0xff000000) >> 24) \
+ | (((x) & 0x00ff0000) >> 8) \
+ | (((x) & 0x0000ff00) << 8) \
+ | (((x) & 0x000000ff) << 24))
+#define bswap_64(x) \
+ ( (((x) & 0xff00000000000000ull) >> 56) \
+ | (((x) & 0x00ff000000000000ull) >> 40) \
+ | (((x) & 0x0000ff0000000000ull) >> 24) \
+ | (((x) & 0x000000ff00000000ull) >> 8) \
+ | (((x) & 0x00000000ff000000ull) << 8) \
+ | (((x) & 0x0000000000ff0000ull) << 24) \
+ | (((x) & 0x000000000000ff00ull) << 40) \
+ | (((x) & 0x00000000000000ffull) << 56))
+
+#else /* !__XEN__ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <byteswap.h>
+#include <xen/elfnote.h>
+#include <xen/libelf.h>
+
+#include "xenctrl.h"
+#include "xc_private.h"
+
+#define elf_msg(elf, fmt, args ... ) \
+ if (elf->log && elf->verbose) fprintf(elf->log, fmt , ## args
)
+#define elf_err(elf, fmt, args ... ) do { \
+ if (elf->log) \
+ fprintf(elf->log, fmt , ## args ); \
+ xc_set_error(XC_INVALID_KERNEL, fmt , ## args ); \
+ } while (0)
+
+#endif
Index: build-32-unstable-13377/xen/common/libelf/libelf-relocate.c
==================================================================--- /dev/null
+++ build-32-unstable-13377/xen/common/libelf/libelf-relocate.c
@@ -0,0 +1,345 @@
+/*
+ * ELF relocation code (not used by xen kernel right now).
+ */
+
+#include "libelf-private.h"
+
+/* ------------------------------------------------------------------------ */
+
+static const char *rel_names_i386[] = {
+ "R_386_NONE",
+ "R_386_32",
+ "R_386_PC32",
+ "R_386_GOT32",
+ "R_386_PLT32",
+ "R_386_COPY",
+ "R_386_GLOB_DAT",
+ "R_386_JMP_SLOT",
+ "R_386_RELATIVE",
+ "R_386_GOTOFF",
+ "R_386_GOTPC",
+ "R_386_32PLT",
+ "R_386_TLS_TPOFF",
+ "R_386_TLS_IE",
+ "R_386_TLS_GOTIE",
+ "R_386_TLS_LE",
+ "R_386_TLS_GD",
+ "R_386_TLS_LDM",
+ "R_386_16",
+ "R_386_PC16",
+ "R_386_8",
+ "R_386_PC8",
+ "R_386_TLS_GD_32",
+ "R_386_TLS_GD_PUSH",
+ "R_386_TLS_GD_CALL",
+ "R_386_TLS_GD_POP",
+ "R_386_TLS_LDM_32",
+ "R_386_TLS_LDM_PUSH",
+ "R_386_TLS_LDM_CALL",
+ "R_386_TLS_LDM_POP",
+ "R_386_TLS_LDO_32",
+ "R_386_TLS_IE_32",
+ "R_386_TLS_LE_32",
+ "R_386_TLS_DTPMOD32",
+ "R_386_TLS_DTPOFF32",
+ "R_386_TLS_TPOFF32",
+};
+
+static int elf_reloc_i386(struct elf_binary *elf, int type,
+ uint64_t addr, uint64_t value)
+{
+ void *ptr = elf_get_ptr(elf, addr);
+ uint32_t *u32;
+
+ switch (type)
+ {
+ case 1 /* R_386_32 */ :
+ u32 = ptr;
+ *u32 += elf->reloc_offset;
+ break;
+ case 2 /* R_386_PC32 */ :
+ /* nothing */
+ break;
+ default:
+ return -1;
+ }
+ return 0;
+}
+
+/* ------------------------------------------------------------------------ */
+
+static const char *rel_names_x86_64[] = {
+ "R_X86_64_NONE",
+ "R_X86_64_64",
+ "R_X86_64_PC32",
+ "R_X86_64_GOT32",
+ "R_X86_64_PLT32",
+ "R_X86_64_COPY",
+ "R_X86_64_GLOB_DAT",
+ "R_X86_64_JUMP_SLOT",
+ "R_X86_64_RELATIVE",
+ "R_X86_64_GOTPCREL",
+ "R_X86_64_32",
+ "R_X86_64_32S",
+ "R_X86_64_16",
+ "R_X86_64_PC16",
+ "R_X86_64_8",
+ "R_X86_64_PC8",
+ "R_X86_64_DTPMOD64",
+ "R_X86_64_DTPOFF64",
+ "R_X86_64_TPOFF64",
+ "R_X86_64_TLSGD",
+ "R_X86_64_TLSLD",
+ "R_X86_64_DTPOFF32",
+ "R_X86_64_GOTTPOFF",
+ "R_X86_64_TPOFF32",
+};
+
+static int elf_reloc_x86_64(struct elf_binary *elf, int type,
+ uint64_t addr, uint64_t value)
+{
+ void *ptr = elf_get_ptr(elf, addr);
+ uint64_t *u64;
+ uint32_t *u32;
+ int32_t *s32;
+
+ switch (type)
+ {
+ case 1 /* R_X86_64_64 */ :
+ u64 = ptr;
+ value += elf->reloc_offset;
+ *u64 = value;
+ break;
+ case 2 /* R_X86_64_PC32 */ :
+ u32 = ptr;
+ *u32 = value - addr;
+ if (*u32 != (uint32_t) (value - addr))
+ {
+ elf_err(elf, "R_X86_64_PC32 overflow: 0x%" PRIx32 " !=
0x%" PRIx32 "\n",
+ *u32, (uint32_t) (value - addr));
+ return -1;
+ }
+ break;
+ case 10 /* R_X86_64_32 */ :
+ u32 = ptr;
+ value += elf->reloc_offset;
+ *u32 = value;
+ if (*u32 != value)
+ {
+ elf_err(elf, "R_X86_64_32 overflow: 0x%" PRIx32 " !=
0x%" PRIx64 "\n",
+ *u32, value);
+ return -1;
+ }
+ break;
+ case 11 /* R_X86_64_32S */ :
+ s32 = ptr;
+ value += elf->reloc_offset;
+ *s32 = value;
+ if (*s32 != (int64_t) value)
+ {
+ elf_err(elf, "R_X86_64_32S overflow: 0x%" PRIx32 " !=
0x%" PRIx64 "\n",
+ *s32, (int64_t) value);
+ return -1;
+ }
+ break;
+ default:
+ return -1;
+ }
+ return 0;
+}
+
+/* ------------------------------------------------------------------------ */
+
+static struct relocs {
+ const char **names;
+ int count;
+ int (*func) (struct elf_binary * elf, int type, uint64_t addr,
+ uint64_t value);
+} relocs[] +/* *INDENT-OFF* */
+{
+ [EM_386] = {
+ .names = rel_names_i386,
+ .count = sizeof(rel_names_i386) / sizeof(rel_names_i386[0]),
+ .func = elf_reloc_i386,
+ },
+ [EM_X86_64] = {
+ .names = rel_names_x86_64,
+ .count = sizeof(rel_names_x86_64) / sizeof(rel_names_x86_64[0]),
+ .func = elf_reloc_x86_64,
+ }
+};
+/* *INDENT-ON* */
+
+/* ------------------------------------------------------------------------ */
+
+static const char *rela_name(int machine, int type)
+{
+ if (machine > sizeof(relocs) / sizeof(relocs[0]))
+ return "unknown mach";
+ if (!relocs[machine].names)
+ return "unknown mach";
+ if (type > relocs[machine].count)
+ return "unknown rela";
+ return relocs[machine].names[type];
+}
+
+static int elf_reloc_section(struct elf_binary *elf,
+ const elf_shdr * rels,
+ const elf_shdr * sect, const elf_shdr * syms)
+{
+ const void *ptr, *end;
+ const elf_shdr *shdr;
+ const elf_rela *rela;
+ const elf_rel *rel;
+ const elf_sym *sym;
+ uint64_t s_type;
+ uint64_t r_offset;
+ uint64_t r_info;
+ uint64_t r_addend;
+ int r_type, r_sym;
+ size_t rsize;
+ uint64_t shndx, sbase, addr, value;
+ const char *sname;
+ int machine;
+
+ machine = elf_uval(elf, elf->ehdr, e_machine);
+ if (machine >= sizeof(relocs) / sizeof(relocs[0]) ||
+ NULL == relocs[machine].func)
+ {
+ elf_err(elf, "%s: can''t handle machine %d\n",
+ __FUNCTION__, machine);
+ return -1;
+ }
+ if (elf_swap(elf))
+ {
+ elf_err(elf, "%s: non-native byte order, relocation not
supported\n",
+ __FUNCTION__);
+ return -1;
+ }
+
+ s_type = elf_uval(elf, rels, sh_type);
+ rsize = (SHT_REL == s_type) ? elf_size(elf, rel) : elf_size(elf, rela);
+ ptr = elf_section_start(elf, rels);
+ end = elf_section_end(elf, rels);
+
+ for (; ptr < end; ptr += rsize)
+ {
+ switch (s_type)
+ {
+ case SHT_REL:
+ rel = ptr;
+ r_offset = elf_uval(elf, rel, r_offset);
+ r_info = elf_uval(elf, rel, r_info);
+ r_addend = 0;
+ break;
+ case SHT_RELA:
+ rela = ptr;
+ r_offset = elf_uval(elf, rela, r_offset);
+ r_info = elf_uval(elf, rela, r_info);
+ r_addend = elf_uval(elf, rela, r_addend);
+ break;
+ default:
+ /* can''t happen */
+ return -1;
+ }
+ if (elf_64bit(elf))
+ {
+ r_type = ELF64_R_TYPE(r_info);
+ r_sym = ELF64_R_SYM(r_info);
+ }
+ else
+ {
+ r_type = ELF32_R_TYPE(r_info);
+ r_sym = ELF32_R_SYM(r_info);
+ }
+
+ sym = elf_sym_by_index(elf, r_sym);
+ shndx = elf_uval(elf, sym, st_shndx);
+ switch (shndx)
+ {
+ case SHN_UNDEF:
+ sname = "*UNDEF*";
+ sbase = 0;
+ break;
+ case SHN_COMMON:
+ elf_err(elf, "%s: invalid section: %" PRId64 "\n",
+ __FUNCTION__, shndx);
+ return -1;
+ case SHN_ABS:
+ sname = "*ABS*";
+ sbase = 0;
+ break;
+ default:
+ shdr = elf_shdr_by_index(elf, shndx);
+ if (NULL == shdr)
+ {
+ elf_err(elf, "%s: invalid section: %" PRId64 "\n",
+ __FUNCTION__, shndx);
+ return -1;
+ }
+ sname = elf_section_name(elf, shdr);
+ sbase = elf_uval(elf, shdr, sh_addr);
+ }
+
+ addr = r_offset;
+ value = elf_uval(elf, sym, st_value);
+ value += r_addend;
+
+ if (elf->log && elf->verbose > 1)
+ {
+ uint64_t st_name = elf_uval(elf, sym, st_name);
+ const char *name = st_name ? elf->sym_strtab + st_name :
"*NONE*";
+
+ elf_msg(elf,
+ "%s: type %s [%d], off 0x%" PRIx64 ", add 0x%" PRIx64
","
+ " sym %s [0x%" PRIx64 "], sec %s [0x%" PRIx64
"]"
+ " -> addr 0x%" PRIx64 " value 0x%" PRIx64
"\n",
+ __FUNCTION__, rela_name(machine, r_type), r_type, r_offset,
+ r_addend, name, elf_uval(elf, sym, st_value), sname, sbase,
+ addr, value);
+ }
+
+ if (-1 == relocs[machine].func(elf, r_type, addr, value))
+ {
+ elf_err(elf, "%s: unknown/unsupported reloc type %s [%d]\n",
+ __FUNCTION__, rela_name(machine, r_type), r_type);
+ return -1;
+ }
+ }
+ return 0;
+}
+
+int elf_reloc(struct elf_binary *elf)
+{
+ const elf_shdr *rels, *sect, *syms;
+ uint64_t i, count, type;
+
+ count = elf_shdr_count(elf);
+ for (i = 0; i < count; i++)
+ {
+ rels = elf_shdr_by_index(elf, i);
+ type = elf_uval(elf, rels, sh_type);
+ if (type != SHT_REL && type != SHT_RELA)
+ continue;
+
+ sect = elf_shdr_by_index(elf, elf_uval(elf, rels, sh_info));
+ syms = elf_shdr_by_index(elf, elf_uval(elf, rels, sh_link));
+ if (NULL == sect || NULL == syms)
+ continue;
+
+ if (!(elf_uval(elf, sect, sh_flags) & SHF_ALLOC))
+ {
+ elf_msg(elf, "%s: relocations for %s, skipping\n",
+ __FUNCTION__, elf_section_name(elf, sect));
+ continue;
+ }
+
+ elf_msg(elf, "%s: relocations for %s @ 0x%" PRIx64 "\n",
+ __FUNCTION__, elf_section_name(elf, sect),
+ elf_uval(elf, sect, sh_addr));
+ if (0 != elf_reloc_section(elf, rels, sect, syms))
+ return -1;
+ }
+ return 0;
+}
Index: build-32-unstable-13377/xen/common/libelf/libelf-tools.c
==================================================================--- /dev/null
+++ build-32-unstable-13377/xen/common/libelf/libelf-tools.c
@@ -0,0 +1,225 @@
+/*
+ * various helper functions to access elf structures
+ */
+
+#include "libelf-private.h"
+
+/* ------------------------------------------------------------------------ */
+
+uint64_t elf_access_unsigned(struct elf_binary * elf, const void *ptr,
+ off_t offset, size_t size)
+{
+ int need_swap = elf_swap(elf);
+ const uint8_t *u8;
+ const uint16_t *u16;
+ const uint32_t *u32;
+ const uint64_t *u64;
+
+ switch (size)
+ {
+ case 1:
+ u8 = ptr + offset;
+ return *u8;
+ case 2:
+ u16 = ptr + offset;
+ return need_swap ? bswap_16(*u16) : *u16;
+ case 4:
+ u32 = ptr + offset;
+ return need_swap ? bswap_32(*u32) : *u32;
+ case 8:
+ u64 = ptr + offset;
+ return need_swap ? bswap_64(*u64) : *u64;
+ default:
+ return 0;
+ }
+}
+
+int64_t elf_access_signed(struct elf_binary *elf, const void *ptr,
+ off_t offset, size_t size)
+{
+ int need_swap = elf_swap(elf);
+ const int8_t *s8;
+ const int16_t *s16;
+ const int32_t *s32;
+ const int64_t *s64;
+
+ switch (size)
+ {
+ case 1:
+ s8 = ptr + offset;
+ return *s8;
+ case 2:
+ s16 = ptr + offset;
+ return need_swap ? bswap_16(*s16) : *s16;
+ case 4:
+ s32 = ptr + offset;
+ return need_swap ? bswap_32(*s32) : *s32;
+ case 8:
+ s64 = ptr + offset;
+ return need_swap ? bswap_64(*s64) : *s64;
+ default:
+ return 0;
+ }
+}
+
+uint64_t elf_round_up(struct elf_binary *elf, uint64_t addr)
+{
+ int elf_round = (elf_64bit(elf) ? 8 : 4) - 1;
+
+ return (addr + elf_round) & ~elf_round;
+}
+
+/* ------------------------------------------------------------------------ */
+
+int elf_shdr_count(struct elf_binary *elf)
+{
+ return elf_uval(elf, elf->ehdr, e_shnum);
+}
+
+int elf_phdr_count(struct elf_binary *elf)
+{
+ return elf_uval(elf, elf->ehdr, e_phnum);
+}
+
+const elf_shdr *elf_shdr_by_name(struct elf_binary *elf, const char *name)
+{
+ uint64_t count = elf_shdr_count(elf);
+ const elf_shdr *shdr;
+ const char *sname;
+ int i;
+
+ for (i = 0; i < count; i++) {
+ shdr = elf_shdr_by_index(elf, i);
+ sname = elf_section_name(elf, shdr);
+ if (sname && 0 == strcmp(sname, name))
+ return shdr;
+ }
+ return NULL;
+}
+
+const elf_shdr *elf_shdr_by_index(struct elf_binary *elf, int index)
+{
+ uint64_t count = elf_shdr_count(elf);
+ const void *ptr = NULL;
+
+ if (index < count)
+ ptr = elf->image
+ + elf_uval(elf, elf->ehdr, e_shoff)
+ + elf_uval(elf, elf->ehdr, e_shentsize) * index;
+ return ptr;
+}
+
+const elf_phdr *elf_phdr_by_index(struct elf_binary *elf, int index)
+{
+ uint64_t count = elf_uval(elf, elf->ehdr, e_phnum);
+ const void *ptr = NULL;
+
+ if (index < count)
+ ptr = elf->image
+ + elf_uval(elf, elf->ehdr, e_phoff)
+ + elf_uval(elf, elf->ehdr, e_phentsize) * index;
+ return ptr;
+}
+
+const char *elf_section_name(struct elf_binary *elf, const elf_shdr * shdr)
+{
+ if (NULL == elf->sec_strtab)
+ return "unknown";
+ return elf->sec_strtab + elf_uval(elf, shdr, sh_name);
+}
+
+const void *elf_section_start(struct elf_binary *elf, const elf_shdr * shdr)
+{
+ return elf->image + elf_uval(elf, shdr, sh_offset);
+}
+
+const void *elf_section_end(struct elf_binary *elf, const elf_shdr * shdr)
+{
+ return elf->image
+ + elf_uval(elf, shdr, sh_offset) + elf_uval(elf, shdr, sh_size);
+}
+
+const elf_sym *elf_sym_by_name(struct elf_binary *elf, const char *symbol)
+{
+ const void *ptr = elf_section_start(elf, elf->sym_tab);
+ const void *end = elf_section_end(elf, elf->sym_tab);
+ const elf_sym *sym;
+ uint64_t info, name;
+
+ for (; ptr < end; ptr += elf_size(elf, sym))
+ {
+ sym = ptr;
+ info = elf_uval(elf, sym, st_info);
+ name = elf_uval(elf, sym, st_name);
+ if (ELF32_ST_BIND(info) != STB_GLOBAL)
+ continue;
+ if (strcmp(elf->sym_strtab + name, symbol) != 0)
+ continue;
+ return sym;
+ }
+ return NULL;
+}
+
+const elf_sym *elf_sym_by_index(struct elf_binary *elf, int index)
+{
+ const void *ptr = elf_section_start(elf, elf->sym_tab);
+ const elf_sym *sym;
+
+ sym = ptr + index * elf_size(elf, sym);
+ return sym;
+}
+
+const char *elf_note_name(struct elf_binary *elf, const elf_note * note)
+{
+ return (void *)note + elf_size(elf, note);
+}
+
+const void *elf_note_desc(struct elf_binary *elf, const elf_note * note)
+{
+ int namesz = (elf_uval(elf, note, namesz) + 3) & ~3;
+
+ return (void *)note + elf_size(elf, note) + namesz;
+}
+
+uint64_t elf_note_numeric(struct elf_binary *elf, const elf_note * note)
+{
+ const void *desc = elf_note_desc(elf, note);
+ int descsz = elf_uval(elf, note, descsz);
+
+ switch (descsz)
+ {
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ return elf_access_unsigned(elf, desc, 0, descsz);
+ default:
+ return 0;
+ }
+}
+const elf_note *elf_note_next(struct elf_binary *elf, const elf_note * note)
+{
+ int namesz = (elf_uval(elf, note, namesz) + 3) & ~3;
+ int descsz = (elf_uval(elf, note, descsz) + 3) & ~3;
+
+ return (void *)note + elf_size(elf, note) + namesz + descsz;
+}
+
+/* ------------------------------------------------------------------------ */
+
+int elf_is_elfbinary(const void *image)
+{
+ const Elf32_Ehdr *ehdr = image;
+
+ if (IS_ELF(*ehdr))
+ return 1;
+ return 0;
+}
+
+int elf_phdr_is_loadable(struct elf_binary *elf, const elf_phdr * phdr)
+{
+ uint64_t p_type = elf_uval(elf, phdr, p_type);
+ uint64_t p_flags = elf_uval(elf, phdr, p_flags);
+
+ return ((p_type == PT_LOAD) && (p_flags & (PF_W | PF_X)) != 0);
+}
Index: build-32-unstable-13377/xen/include/public/elfstructs.h
==================================================================--- /dev/null
+++ build-32-unstable-13377/xen/include/public/elfstructs.h
@@ -0,0 +1,527 @@
+#ifndef __XEN_PUBLIC_ELFSTRUCTS_H__
+#define __XEN_PUBLIC_ELFSTRUCTS_H__ 1
+/*
+ * Copyright (c) 1995, 1996 Erik Theisen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'''' AND ANY
EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+typedef uint8_t Elf_Byte;
+
+typedef uint32_t Elf32_Addr; /* Unsigned program address */
+typedef uint32_t Elf32_Off; /* Unsigned file offset */
+typedef int32_t Elf32_Sword; /* Signed large integer */
+typedef uint32_t Elf32_Word; /* Unsigned large integer */
+typedef uint16_t Elf32_Half; /* Unsigned medium integer */
+
+typedef uint64_t Elf64_Addr;
+typedef uint64_t Elf64_Off;
+typedef int32_t Elf64_Shalf;
+
+typedef int32_t Elf64_Sword;
+typedef uint32_t Elf64_Word;
+
+typedef int64_t Elf64_Sxword;
+typedef uint64_t Elf64_Xword;
+
+typedef uint32_t Elf64_Half;
+typedef uint16_t Elf64_Quarter;
+
+/*
+ * e_ident[] identification indexes
+ * See http://www.caldera.com/developers/gabi/2000-07-17/ch4.eheader.html
+ */
+#define EI_MAG0 0 /* file ID */
+#define EI_MAG1 1 /* file ID */
+#define EI_MAG2 2 /* file ID */
+#define EI_MAG3 3 /* file ID */
+#define EI_CLASS 4 /* file class */
+#define EI_DATA 5 /* data encoding */
+#define EI_VERSION 6 /* ELF header version */
+#define EI_OSABI 7 /* OS/ABI ID */
+#define EI_ABIVERSION 8 /* ABI version */
+#define EI_PAD 9 /* start of pad bytes */
+#define EI_NIDENT 16 /* Size of e_ident[] */
+
+/* e_ident[] magic number */
+#define ELFMAG0 0x7f /* e_ident[EI_MAG0] */
+#define ELFMAG1 ''E'' /* e_ident[EI_MAG1] */
+#define ELFMAG2 ''L'' /* e_ident[EI_MAG2] */
+#define ELFMAG3 ''F'' /* e_ident[EI_MAG3] */
+#define ELFMAG "\177ELF" /* magic */
+#define SELFMAG 4 /* size of magic */
+
+/* e_ident[] file class */
+#define ELFCLASSNONE 0 /* invalid */
+#define ELFCLASS32 1 /* 32-bit objs */
+#define ELFCLASS64 2 /* 64-bit objs */
+#define ELFCLASSNUM 3 /* number of classes */
+
+/* e_ident[] data encoding */
+#define ELFDATANONE 0 /* invalid */
+#define ELFDATA2LSB 1 /* Little-Endian */
+#define ELFDATA2MSB 2 /* Big-Endian */
+#define ELFDATANUM 3 /* number of data encode defines */
+
+/* e_ident[] Operating System/ABI */
+#define ELFOSABI_SYSV 0 /* UNIX System V ABI */
+#define ELFOSABI_HPUX 1 /* HP-UX operating system */
+#define ELFOSABI_NETBSD 2 /* NetBSD */
+#define ELFOSABI_LINUX 3 /* GNU/Linux */
+#define ELFOSABI_HURD 4 /* GNU/Hurd */
+#define ELFOSABI_86OPEN 5 /* 86Open common IA32 ABI */
+#define ELFOSABI_SOLARIS 6 /* Solaris */
+#define ELFOSABI_MONTEREY 7 /* Monterey */
+#define ELFOSABI_IRIX 8 /* IRIX */
+#define ELFOSABI_FREEBSD 9 /* FreeBSD */
+#define ELFOSABI_TRU64 10 /* TRU64 UNIX */
+#define ELFOSABI_MODESTO 11 /* Novell Modesto */
+#define ELFOSABI_OPENBSD 12 /* OpenBSD */
+#define ELFOSABI_ARM 97 /* ARM */
+#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */
+
+/* e_ident */
+#define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
+ (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \
+ (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \
+ (ehdr).e_ident[EI_MAG3] == ELFMAG3)
+
+/* ELF Header */
+typedef struct elfhdr {
+ unsigned char e_ident[EI_NIDENT]; /* ELF Identification */
+ Elf32_Half e_type; /* object file type */
+ Elf32_Half e_machine; /* machine */
+ Elf32_Word e_version; /* object file version */
+ Elf32_Addr e_entry; /* virtual entry point */
+ Elf32_Off e_phoff; /* program header table offset */
+ Elf32_Off e_shoff; /* section header table offset */
+ Elf32_Word e_flags; /* processor-specific flags */
+ Elf32_Half e_ehsize; /* ELF header size */
+ Elf32_Half e_phentsize; /* program header entry size */
+ Elf32_Half e_phnum; /* number of program header entries */
+ Elf32_Half e_shentsize; /* section header entry size */
+ Elf32_Half e_shnum; /* number of section header entries */
+ Elf32_Half e_shstrndx; /* section header table''s "section
+ header string table" entry offset */
+} Elf32_Ehdr;
+
+typedef struct {
+ unsigned char e_ident[EI_NIDENT]; /* Id bytes */
+ Elf64_Quarter e_type; /* file type */
+ Elf64_Quarter e_machine; /* machine type */
+ Elf64_Half e_version; /* version number */
+ Elf64_Addr e_entry; /* entry point */
+ Elf64_Off e_phoff; /* Program hdr offset */
+ Elf64_Off e_shoff; /* Section hdr offset */
+ Elf64_Half e_flags; /* Processor flags */
+ Elf64_Quarter e_ehsize; /* sizeof ehdr */
+ Elf64_Quarter e_phentsize; /* Program header entry size */
+ Elf64_Quarter e_phnum; /* Number of program headers */
+ Elf64_Quarter e_shentsize; /* Section header entry size */
+ Elf64_Quarter e_shnum; /* Number of section headers */
+ Elf64_Quarter e_shstrndx; /* String table index */
+} Elf64_Ehdr;
+
+/* e_type */
+#define ET_NONE 0 /* No file type */
+#define ET_REL 1 /* relocatable file */
+#define ET_EXEC 2 /* executable file */
+#define ET_DYN 3 /* shared object file */
+#define ET_CORE 4 /* core file */
+#define ET_NUM 5 /* number of types */
+#define ET_LOPROC 0xff00 /* reserved range for processor */
+#define ET_HIPROC 0xffff /* specific e_type */
+
+/* e_machine */
+#define EM_NONE 0 /* No Machine */
+#define EM_M32 1 /* AT&T WE 32100 */
+#define EM_SPARC 2 /* SPARC */
+#define EM_386 3 /* Intel 80386 */
+#define EM_68K 4 /* Motorola 68000 */
+#define EM_88K 5 /* Motorola 88000 */
+#define EM_486 6 /* Intel 80486 - unused? */
+#define EM_860 7 /* Intel 80860 */
+#define EM_MIPS 8 /* MIPS R3000 Big-Endian only */
+/*
+ * Don''t know if EM_MIPS_RS4_BE,
+ * EM_SPARC64, EM_PARISC,
+ * or EM_PPC are ABI compliant
+ */
+#define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */
+#define EM_SPARC64 11 /* SPARC v9 64-bit unoffical */
+#define EM_PARISC 15 /* HPPA */
+#define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */
+#define EM_PPC 20 /* PowerPC */
+#define EM_PPC64 21 /* PowerPC 64-bit */
+#define EM_ARM 40 /* Advanced RISC Machines ARM */
+#define EM_ALPHA 41 /* DEC ALPHA */
+#define EM_SPARCV9 43 /* SPARC version 9 */
+#define EM_ALPHA_EXP 0x9026 /* DEC ALPHA */
+#define EM_IA_64 50 /* Intel Merced */
+#define EM_X86_64 62 /* AMD x86-64 architecture */
+#define EM_VAX 75 /* DEC VAX */
+
+/* Version */
+#define EV_NONE 0 /* Invalid */
+#define EV_CURRENT 1 /* Current */
+#define EV_NUM 2 /* number of versions */
+
+/* Section Header */
+typedef struct {
+ Elf32_Word sh_name; /* name - index into section header
+ string table section */
+ Elf32_Word sh_type; /* type */
+ Elf32_Word sh_flags; /* flags */
+ Elf32_Addr sh_addr; /* address */
+ Elf32_Off sh_offset; /* file offset */
+ Elf32_Word sh_size; /* section size */
+ Elf32_Word sh_link; /* section header table index link */
+ Elf32_Word sh_info; /* extra information */
+ Elf32_Word sh_addralign; /* address alignment */
+ Elf32_Word sh_entsize; /* section entry size */
+} Elf32_Shdr;
+
+typedef struct {
+ Elf64_Half sh_name; /* section name */
+ Elf64_Half sh_type; /* section type */
+ Elf64_Xword sh_flags; /* section flags */
+ Elf64_Addr sh_addr; /* virtual address */
+ Elf64_Off sh_offset; /* file offset */
+ Elf64_Xword sh_size; /* section size */
+ Elf64_Half sh_link; /* link to another */
+ Elf64_Half sh_info; /* misc info */
+ Elf64_Xword sh_addralign; /* memory alignment */
+ Elf64_Xword sh_entsize; /* table entry size */
+} Elf64_Shdr;
+
+/* Special Section Indexes */
+#define SHN_UNDEF 0 /* undefined */
+#define SHN_LORESERVE 0xff00 /* lower bounds of reserved indexes */
+#define SHN_LOPROC 0xff00 /* reserved range for processor */
+#define SHN_HIPROC 0xff1f /* specific section indexes */
+#define SHN_ABS 0xfff1 /* absolute value */
+#define SHN_COMMON 0xfff2 /* common symbol */
+#define SHN_HIRESERVE 0xffff /* upper bounds of reserved indexes */
+
+/* sh_type */
+#define SHT_NULL 0 /* inactive */
+#define SHT_PROGBITS 1 /* program defined information */
+#define SHT_SYMTAB 2 /* symbol table section */
+#define SHT_STRTAB 3 /* string table section */
+#define SHT_RELA 4 /* relocation section with addends*/
+#define SHT_HASH 5 /* symbol hash table section */
+#define SHT_DYNAMIC 6 /* dynamic section */
+#define SHT_NOTE 7 /* note section */
+#define SHT_NOBITS 8 /* no space section */
+#define SHT_REL 9 /* relation section without addends */
+#define SHT_SHLIB 10 /* reserved - purpose unknown */
+#define SHT_DYNSYM 11 /* dynamic symbol table section */
+#define SHT_NUM 12 /* number of section types */
+#define SHT_LOPROC 0x70000000 /* reserved range for processor */
+#define SHT_HIPROC 0x7fffffff /* specific section header types */
+#define SHT_LOUSER 0x80000000 /* reserved range for application */
+#define SHT_HIUSER 0xffffffff /* specific indexes */
+
+/* Section names */
+#define ELF_BSS ".bss" /* uninitialized data */
+#define ELF_DATA ".data" /* initialized data */
+#define ELF_DEBUG ".debug" /* debug */
+#define ELF_DYNAMIC ".dynamic" /* dynamic linking information */
+#define ELF_DYNSTR ".dynstr" /* dynamic string table */
+#define ELF_DYNSYM ".dynsym" /* dynamic symbol table */
+#define ELF_FINI ".fini" /* termination code */
+#define ELF_GOT ".got" /* global offset table */
+#define ELF_HASH ".hash" /* symbol hash table */
+#define ELF_INIT ".init" /* initialization code */
+#define ELF_REL_DATA ".rel.data" /* relocation data */
+#define ELF_REL_FINI ".rel.fini" /* relocation termination code */
+#define ELF_REL_INIT ".rel.init" /* relocation initialization code
*/
+#define ELF_REL_DYN ".rel.dyn" /* relocaltion dynamic link info
*/
+#define ELF_REL_RODATA ".rel.rodata" /* relocation read-only data */
+#define ELF_REL_TEXT ".rel.text" /* relocation code */
+#define ELF_RODATA ".rodata" /* read-only data */
+#define ELF_SHSTRTAB ".shstrtab" /* section header string table */
+#define ELF_STRTAB ".strtab" /* string table */
+#define ELF_SYMTAB ".symtab" /* symbol table */
+#define ELF_TEXT ".text" /* code */
+
+
+/* Section Attribute Flags - sh_flags */
+#define SHF_WRITE 0x1 /* Writable */
+#define SHF_ALLOC 0x2 /* occupies memory */
+#define SHF_EXECINSTR 0x4 /* executable */
+#define SHF_MASKPROC 0xf0000000 /* reserved bits for processor */
+ /* specific section attributes */
+
+/* Symbol Table Entry */
+typedef struct elf32_sym {
+ Elf32_Word st_name; /* name - index into string table */
+ Elf32_Addr st_value; /* symbol value */
+ Elf32_Word st_size; /* symbol size */
+ unsigned char st_info; /* type and binding */
+ unsigned char st_other; /* 0 - no defined meaning */
+ Elf32_Half st_shndx; /* section header index */
+} Elf32_Sym;
+
+typedef struct {
+ Elf64_Half st_name; /* Symbol name index in str table */
+ Elf_Byte st_info; /* type / binding attrs */
+ Elf_Byte st_other; /* unused */
+ Elf64_Quarter st_shndx; /* section index of symbol */
+ Elf64_Xword st_value; /* value of symbol */
+ Elf64_Xword st_size; /* size of symbol */
+} Elf64_Sym;
+
+/* Symbol table index */
+#define STN_UNDEF 0 /* undefined */
+
+/* Extract symbol info - st_info */
+#define ELF32_ST_BIND(x) ((x) >> 4)
+#define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf)
+#define ELF32_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf))
+
+#define ELF64_ST_BIND(x) ((x) >> 4)
+#define ELF64_ST_TYPE(x) (((unsigned int) x) & 0xf)
+#define ELF64_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf))
+
+/* Symbol Binding - ELF32_ST_BIND - st_info */
+#define STB_LOCAL 0 /* Local symbol */
+#define STB_GLOBAL 1 /* Global symbol */
+#define STB_WEAK 2 /* like global - lower precedence */
+#define STB_NUM 3 /* number of symbol bindings */
+#define STB_LOPROC 13 /* reserved range for processor */
+#define STB_HIPROC 15 /* specific symbol bindings */
+
+/* Symbol type - ELF32_ST_TYPE - st_info */
+#define STT_NOTYPE 0 /* not specified */
+#define STT_OBJECT 1 /* data object */
+#define STT_FUNC 2 /* function */
+#define STT_SECTION 3 /* section */
+#define STT_FILE 4 /* file */
+#define STT_NUM 5 /* number of symbol types */
+#define STT_LOPROC 13 /* reserved range for processor */
+#define STT_HIPROC 15 /* specific symbol types */
+
+/* Relocation entry with implicit addend */
+typedef struct {
+ Elf32_Addr r_offset; /* offset of relocation */
+ Elf32_Word r_info; /* symbol table index and type */
+} Elf32_Rel;
+
+/* Relocation entry with explicit addend */
+typedef struct {
+ Elf32_Addr r_offset; /* offset of relocation */
+ Elf32_Word r_info; /* symbol table index and type */
+ Elf32_Sword r_addend;
+} Elf32_Rela;
+
+/* Extract relocation info - r_info */
+#define ELF32_R_SYM(i) ((i) >> 8)
+#define ELF32_R_TYPE(i) ((unsigned char) (i))
+#define ELF32_R_INFO(s,t) (((s) << 8) + (unsigned char)(t))
+
+typedef struct {
+ Elf64_Xword r_offset; /* where to do it */
+ Elf64_Xword r_info; /* index & type of relocation */
+} Elf64_Rel;
+
+typedef struct {
+ Elf64_Xword r_offset; /* where to do it */
+ Elf64_Xword r_info; /* index & type of relocation */
+ Elf64_Sxword r_addend; /* adjustment value */
+} Elf64_Rela;
+
+#define ELF64_R_SYM(info) ((info) >> 32)
+#define ELF64_R_TYPE(info) ((info) & 0xFFFFFFFF)
+#define ELF64_R_INFO(s,t) (((s) << 32) + (u_int32_t)(t))
+
+/* Program Header */
+typedef struct {
+ Elf32_Word p_type; /* segment type */
+ Elf32_Off p_offset; /* segment offset */
+ Elf32_Addr p_vaddr; /* virtual address of segment */
+ Elf32_Addr p_paddr; /* physical address - ignored? */
+ Elf32_Word p_filesz; /* number of bytes in file for seg. */
+ Elf32_Word p_memsz; /* number of bytes in mem. for seg. */
+ Elf32_Word p_flags; /* flags */
+ Elf32_Word p_align; /* memory alignment */
+} Elf32_Phdr;
+
+typedef struct {
+ Elf64_Half p_type; /* entry type */
+ Elf64_Half p_flags; /* flags */
+ Elf64_Off p_offset; /* offset */
+ Elf64_Addr p_vaddr; /* virtual address */
+ Elf64_Addr p_paddr; /* physical address */
+ Elf64_Xword p_filesz; /* file size */
+ Elf64_Xword p_memsz; /* memory size */
+ Elf64_Xword p_align; /* memory & file alignment */
+} Elf64_Phdr;
+
+/* Segment types - p_type */
+#define PT_NULL 0 /* unused */
+#define PT_LOAD 1 /* loadable segment */
+#define PT_DYNAMIC 2 /* dynamic linking section */
+#define PT_INTERP 3 /* the RTLD */
+#define PT_NOTE 4 /* auxiliary information */
+#define PT_SHLIB 5 /* reserved - purpose undefined */
+#define PT_PHDR 6 /* program header */
+#define PT_NUM 7 /* Number of segment types */
+#define PT_LOPROC 0x70000000 /* reserved range for processor */
+#define PT_HIPROC 0x7fffffff /* specific segment types */
+
+/* Segment flags - p_flags */
+#define PF_X 0x1 /* Executable */
+#define PF_W 0x2 /* Writable */
+#define PF_R 0x4 /* Readable */
+#define PF_MASKPROC 0xf0000000 /* reserved bits for processor */
+ /* specific segment flags */
+
+/* Dynamic structure */
+typedef struct {
+ Elf32_Sword d_tag; /* controls meaning of d_val */
+ union {
+ Elf32_Word d_val; /* Multiple meanings - see d_tag */
+ Elf32_Addr d_ptr; /* program virtual address */
+ } d_un;
+} Elf32_Dyn;
+
+typedef struct {
+ Elf64_Xword d_tag; /* controls meaning of d_val */
+ union {
+ Elf64_Addr d_ptr;
+ Elf64_Xword d_val;
+ } d_un;
+} Elf64_Dyn;
+
+/* Dynamic Array Tags - d_tag */
+#define DT_NULL 0 /* marks end of _DYNAMIC array */
+#define DT_NEEDED 1 /* string table offset of needed lib */
+#define DT_PLTRELSZ 2 /* size of relocation entries in PLT */
+#define DT_PLTGOT 3 /* address PLT/GOT */
+#define DT_HASH 4 /* address of symbol hash table */
+#define DT_STRTAB 5 /* address of string table */
+#define DT_SYMTAB 6 /* address of symbol table */
+#define DT_RELA 7 /* address of relocation table */
+#define DT_RELASZ 8 /* size of relocation table */
+#define DT_RELAENT 9 /* size of relocation entry */
+#define DT_STRSZ 10 /* size of string table */
+#define DT_SYMENT 11 /* size of symbol table entry */
+#define DT_INIT 12 /* address of initialization func. */
+#define DT_FINI 13 /* address of termination function */
+#define DT_SONAME 14 /* string table offset of shared obj */
+#define DT_RPATH 15 /* string table offset of library
+ search path */
+#define DT_SYMBOLIC 16 /* start sym search in shared obj. */
+#define DT_REL 17 /* address of rel. tbl. w addends */
+#define DT_RELSZ 18 /* size of DT_REL relocation table */
+#define DT_RELENT 19 /* size of DT_REL relocation entry */
+#define DT_PLTREL 20 /* PLT referenced relocation entry */
+#define DT_DEBUG 21 /* bugger */
+#define DT_TEXTREL 22 /* Allow rel. mod. to unwritable seg */
+#define DT_JMPREL 23 /* add. of PLT''s relocation entries */
+#define DT_BIND_NOW 24 /* Bind now regardless of env setting */
+#define DT_NUM 25 /* Number used. */
+#define DT_LOPROC 0x70000000 /* reserved range for processor */
+#define DT_HIPROC 0x7fffffff /* specific dynamic array tags */
+
+/* Standard ELF hashing function */
+unsigned int elf_hash(const unsigned char *name);
+
+/*
+ * Note Definitions
+ */
+typedef struct {
+ Elf32_Word namesz;
+ Elf32_Word descsz;
+ Elf32_Word type;
+} Elf32_Note;
+
+typedef struct {
+ Elf64_Half namesz;
+ Elf64_Half descsz;
+ Elf64_Half type;
+} Elf64_Note;
+
+
+#if defined(ELFSIZE)
+#define CONCAT(x,y) __CONCAT(x,y)
+#define ELFNAME(x) CONCAT(elf,CONCAT(ELFSIZE,CONCAT(_,x)))
+#define ELFNAME2(x,y) CONCAT(x,CONCAT(_elf,CONCAT(ELFSIZE,CONCAT(_,y))))
+#define ELFNAMEEND(x) CONCAT(x,CONCAT(_elf,ELFSIZE))
+#define ELFDEFNNAME(x) CONCAT(ELF,CONCAT(ELFSIZE,CONCAT(_,x)))
+#endif
+
+#if defined(ELFSIZE) && (ELFSIZE == 32)
+#define Elf_Ehdr Elf32_Ehdr
+#define Elf_Phdr Elf32_Phdr
+#define Elf_Shdr Elf32_Shdr
+#define Elf_Sym Elf32_Sym
+#define Elf_Rel Elf32_Rel
+#define Elf_RelA Elf32_Rela
+#define Elf_Dyn Elf32_Dyn
+#define Elf_Word Elf32_Word
+#define Elf_Sword Elf32_Sword
+#define Elf_Addr Elf32_Addr
+#define Elf_Off Elf32_Off
+#define Elf_Nhdr Elf32_Nhdr
+#define Elf_Note Elf32_Note
+
+#define ELF_R_SYM ELF32_R_SYM
+#define ELF_R_TYPE ELF32_R_TYPE
+#define ELF_R_INFO ELF32_R_INFO
+#define ELFCLASS ELFCLASS32
+
+#define ELF_ST_BIND ELF32_ST_BIND
+#define ELF_ST_TYPE ELF32_ST_TYPE
+#define ELF_ST_INFO ELF32_ST_INFO
+
+#define AuxInfo Aux32Info
+#elif defined(ELFSIZE) && (ELFSIZE == 64)
+#define Elf_Ehdr Elf64_Ehdr
+#define Elf_Phdr Elf64_Phdr
+#define Elf_Shdr Elf64_Shdr
+#define Elf_Sym Elf64_Sym
+#define Elf_Rel Elf64_Rel
+#define Elf_RelA Elf64_Rela
+#define Elf_Dyn Elf64_Dyn
+#define Elf_Word Elf64_Word
+#define Elf_Sword Elf64_Sword
+#define Elf_Addr Elf64_Addr
+#define Elf_Off Elf64_Off
+#define Elf_Nhdr Elf64_Nhdr
+#define Elf_Note Elf64_Note
+
+#define ELF_R_SYM ELF64_R_SYM
+#define ELF_R_TYPE ELF64_R_TYPE
+#define ELF_R_INFO ELF64_R_INFO
+#define ELFCLASS ELFCLASS64
+
+#define ELF_ST_BIND ELF64_ST_BIND
+#define ELF_ST_TYPE ELF64_ST_TYPE
+#define ELF_ST_INFO ELF64_ST_INFO
+
+#define AuxInfo Aux64Info
+#endif
+
+#endif /* __XEN_PUBLIC_ELFSTRUCTS_H__ */
Index: build-32-unstable-13377/xen/include/public/libelf.h
==================================================================--- /dev/null
+++ build-32-unstable-13377/xen/include/public/libelf.h
@@ -0,0 +1,238 @@
+#ifndef __XC_LIBELF__
+#define __XC_LIBELF__ 1
+
+#ifdef __XEN__
+
+#include <xen/inttypes.h>
+#include <public/features.h>
+typedef uint64_t off_t;
+
+#define LITTLE_ENDIAN 1234
+#define BIG_ENDIAN 4321
+#if defined(__i386__) || defined(__x86_64) || defined(__ia64__)
+#define BYTE_ORDER LITTLE_ENDIAN
+#elif defined(__powerpc__)
+#define BYTE_ORDER BIG_ENDIAN
+#endif
+
+#else /* !__XEN__ */
+
+#include <stddef.h>
+#include <inttypes.h>
+
+#endif
+
+#undef ELFSIZE
+#include "elfstructs.h"
+#include "features.h"
+
+/* ------------------------------------------------------------------------ */
+
+typedef union {
+ Elf32_Ehdr e32;
+ Elf64_Ehdr e64;
+} elf_ehdr;
+
+typedef union {
+ Elf32_Phdr e32;
+ Elf64_Phdr e64;
+} elf_phdr;
+
+typedef union {
+ Elf32_Shdr e32;
+ Elf64_Shdr e64;
+} elf_shdr;
+
+typedef union {
+ Elf32_Sym e32;
+ Elf64_Sym e64;
+} elf_sym;
+
+typedef union {
+ Elf32_Rel e32;
+ Elf64_Rel e64;
+} elf_rel;
+
+typedef union {
+ Elf32_Rela e32;
+ Elf64_Rela e64;
+} elf_rela;
+
+typedef union {
+ Elf32_Note e32;
+ Elf64_Note e64;
+} elf_note;
+
+struct elf_binary {
+ /* elf binary */
+ const char *image;
+ size_t size;
+ char class;
+ char data;
+
+ const elf_ehdr *ehdr;
+ const char *sec_strtab;
+ const elf_shdr *sym_tab;
+ const char *sym_strtab;
+
+ /* loaded to */
+ char *dest;
+ uint64_t pstart;
+ uint64_t pend;
+ uint64_t reloc_offset;
+
+#ifndef __XEN__
+ /* misc */
+ FILE *log;
+#endif
+ int verbose;
+};
+
+/* ------------------------------------------------------------------------ */
+/* accessing elf header fields */
+
+#if !defined(BYTE_ORDER)
+# error BYTE_ORDER not defined
+#elif BYTE_ORDER == BIG_ENDIAN
+# define NATIVE_ELFDATA ELFDATA2MSB
+#elif BYTE_ORDER == LITTLE_ENDIAN
+# define NATIVE_ELFDATA ELFDATA2LSB
+#else
+# error BYTE_ORDER unknown
+#endif
+
+#define elf_32bit(elf) (ELFCLASS32 == (elf)->class)
+#define elf_64bit(elf) (ELFCLASS64 == (elf)->class)
+#define elf_msb(elf) (ELFDATA2MSB == (elf)->data)
+#define elf_lsb(elf) (ELFDATA2LSB == (elf)->data)
+#define elf_swap(elf) (NATIVE_ELFDATA != (elf)->data)
+
+#define elf_uval(elf, str, elem) \
+ ((ELFCLASS64 == (elf)->class) \
+ ? elf_access_unsigned((elf), (str), \
+ offsetof(typeof(*(str)),e64.elem), \
+ sizeof((str)->e64.elem)) \
+ : elf_access_unsigned((elf), (str), \
+ offsetof(typeof(*(str)),e32.elem), \
+ sizeof((str)->e32.elem)))
+
+#define elf_sval(elf, str, elem) \
+ ((ELFCLASS64 == (elf)->class) \
+ ? elf_access_signed((elf), (str), \
+ offsetof(typeof(*(str)),e64.elem), \
+ sizeof((str)->e64.elem)) \
+ : elf_access_signed((elf), (str), \
+ offsetof(typeof(*(str)),e32.elem), \
+ sizeof((str)->e32.elem)))
+
+#define elf_size(elf, str) \
+ ((ELFCLASS64 == (elf)->class) \
+ ? sizeof((str)->e64) \
+ : sizeof((str)->e32))
+
+uint64_t elf_access_unsigned(struct elf_binary *elf, const void *ptr,
+ off_t offset, size_t size);
+int64_t elf_access_signed(struct elf_binary *elf, const void *ptr,
+ off_t offset, size_t size);
+
+uint64_t elf_round_up(struct elf_binary *elf, uint64_t addr);
+
+/* ------------------------------------------------------------------------ */
+/* xc_libelf_tools.c */
+
+int elf_shdr_count(struct elf_binary *elf);
+int elf_phdr_count(struct elf_binary *elf);
+
+const elf_shdr *elf_shdr_by_name(struct elf_binary *elf, const char *name);
+const elf_shdr *elf_shdr_by_index(struct elf_binary *elf, int index);
+const elf_phdr *elf_phdr_by_index(struct elf_binary *elf, int index);
+
+const char *elf_section_name(struct elf_binary *elf, const elf_shdr * shdr);
+const void *elf_section_start(struct elf_binary *elf, const elf_shdr * shdr);
+const void *elf_section_end(struct elf_binary *elf, const elf_shdr * shdr);
+
+const elf_sym *elf_sym_by_name(struct elf_binary *elf, const char *symbol);
+const elf_sym *elf_sym_by_index(struct elf_binary *elf, int index);
+
+const char *elf_note_name(struct elf_binary *elf, const elf_note * note);
+const void *elf_note_desc(struct elf_binary *elf, const elf_note * note);
+uint64_t elf_note_numeric(struct elf_binary *elf, const elf_note * note);
+const elf_note *elf_note_next(struct elf_binary *elf, const elf_note * note);
+
+int elf_is_elfbinary(const void *image);
+int elf_phdr_is_loadable(struct elf_binary *elf, const elf_phdr * phdr);
+
+/* ------------------------------------------------------------------------ */
+/* xc_libelf_loader.c */
+
+int elf_init(struct elf_binary *elf, const char *image, size_t size);
+#ifdef __XEN__
+void elf_set_verbose(struct elf_binary *elf);
+#else
+void elf_set_logfile(struct elf_binary *elf, FILE * log, int verbose);
+#endif
+
+void elf_parse_binary(struct elf_binary *elf);
+void elf_load_binary(struct elf_binary *elf);
+
+void *elf_get_ptr(struct elf_binary *elf, unsigned long addr);
+uint64_t elf_lookup_addr(struct elf_binary *elf, const char *symbol);
+
+/* ------------------------------------------------------------------------ */
+/* xc_libelf_relocate.c */
+
+int elf_reloc(struct elf_binary *elf);
+
+/* ------------------------------------------------------------------------ */
+/* xc_libelf_dominfo.c */
+
+#define UNSET_ADDR ((uint64_t)-1)
+
+struct elf_dom_parms {
+ /* raw */
+ const char *guest_info;
+ const void *elf_note_start;
+ const void *elf_note_end;
+
+ /* parsed */
+ char guest_os[16];
+ char guest_ver[16];
+ char xen_ver[16];
+ char loader[16];
+ int pae;
+ int bsd_symtab;
+ uint64_t virt_base;
+ uint64_t virt_entry;
+ uint64_t virt_hypercall;
+ uint64_t virt_hv_start_low;
+ uint64_t elf_paddr_offset;
+ uint32_t f_supported[XENFEAT_NR_SUBMAPS];
+ uint32_t f_required[XENFEAT_NR_SUBMAPS];
+
+ /* calculated */
+ uint64_t virt_offset;
+ uint64_t virt_kstart;
+ uint64_t virt_kend;
+};
+
+static inline void elf_xen_feature_set(int nr, uint32_t * addr)
+{
+ addr[nr >> 5] |= 1 << (nr & 31);
+}
+static inline int elf_xen_feature_get(int nr, uint32_t * addr)
+{
+ return !!(addr[nr >> 5] & (1 << (nr & 31)));
+}
+
+int elf_xen_parse_features(const char *features,
+ uint32_t *supported,
+ uint32_t *required);
+int elf_xen_parse_note(struct elf_binary *elf,
+ struct elf_dom_parms *parms,
+ const elf_note *note);
+int elf_xen_parse_guest_info(struct elf_binary *elf,
+ struct elf_dom_parms *parms);
+int elf_xen_parse(struct elf_binary *elf,
+ struct elf_dom_parms *parms);
+
+#endif /* __XC_LIBELF__ */
Index: build-32-unstable-13377/tools/libxc/xc_elf.h
==================================================================---
build-32-unstable-13377.orig/tools/libxc/xc_elf.h
+++ build-32-unstable-13377/tools/libxc/xc_elf.h
@@ -1,524 +1 @@
-/*
- * Copyright (c) 1995, 1996 Erik Theisen. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'''' AND ANY
EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-typedef uint8_t Elf_Byte;
-
-typedef uint32_t Elf32_Addr; /* Unsigned program address */
-typedef uint32_t Elf32_Off; /* Unsigned file offset */
-typedef int32_t Elf32_Sword; /* Signed large integer */
-typedef uint32_t Elf32_Word; /* Unsigned large integer */
-typedef uint16_t Elf32_Half; /* Unsigned medium integer */
-
-typedef uint64_t Elf64_Addr;
-typedef uint64_t Elf64_Off;
-typedef int32_t Elf64_Shalf;
-
-typedef int32_t Elf64_Sword;
-typedef uint32_t Elf64_Word;
-
-typedef int64_t Elf64_Sxword;
-typedef uint64_t Elf64_Xword;
-
-typedef uint32_t Elf64_Half;
-typedef uint16_t Elf64_Quarter;
-
-/*
- * e_ident[] identification indexes
- * See http://www.caldera.com/developers/gabi/2000-07-17/ch4.eheader.html
- */
-#define EI_MAG0 0 /* file ID */
-#define EI_MAG1 1 /* file ID */
-#define EI_MAG2 2 /* file ID */
-#define EI_MAG3 3 /* file ID */
-#define EI_CLASS 4 /* file class */
-#define EI_DATA 5 /* data encoding */
-#define EI_VERSION 6 /* ELF header version */
-#define EI_OSABI 7 /* OS/ABI ID */
-#define EI_ABIVERSION 8 /* ABI version */
-#define EI_PAD 9 /* start of pad bytes */
-#define EI_NIDENT 16 /* Size of e_ident[] */
-
-/* e_ident[] magic number */
-#define ELFMAG0 0x7f /* e_ident[EI_MAG0] */
-#define ELFMAG1 ''E'' /* e_ident[EI_MAG1] */
-#define ELFMAG2 ''L'' /* e_ident[EI_MAG2] */
-#define ELFMAG3 ''F'' /* e_ident[EI_MAG3] */
-#define ELFMAG "\177ELF" /* magic */
-#define SELFMAG 4 /* size of magic */
-
-/* e_ident[] file class */
-#define ELFCLASSNONE 0 /* invalid */
-#define ELFCLASS32 1 /* 32-bit objs */
-#define ELFCLASS64 2 /* 64-bit objs */
-#define ELFCLASSNUM 3 /* number of classes */
-
-/* e_ident[] data encoding */
-#define ELFDATANONE 0 /* invalid */
-#define ELFDATA2LSB 1 /* Little-Endian */
-#define ELFDATA2MSB 2 /* Big-Endian */
-#define ELFDATANUM 3 /* number of data encode defines */
-
-/* e_ident[] Operating System/ABI */
-#define ELFOSABI_SYSV 0 /* UNIX System V ABI */
-#define ELFOSABI_HPUX 1 /* HP-UX operating system */
-#define ELFOSABI_NETBSD 2 /* NetBSD */
-#define ELFOSABI_LINUX 3 /* GNU/Linux */
-#define ELFOSABI_HURD 4 /* GNU/Hurd */
-#define ELFOSABI_86OPEN 5 /* 86Open common IA32 ABI */
-#define ELFOSABI_SOLARIS 6 /* Solaris */
-#define ELFOSABI_MONTEREY 7 /* Monterey */
-#define ELFOSABI_IRIX 8 /* IRIX */
-#define ELFOSABI_FREEBSD 9 /* FreeBSD */
-#define ELFOSABI_TRU64 10 /* TRU64 UNIX */
-#define ELFOSABI_MODESTO 11 /* Novell Modesto */
-#define ELFOSABI_OPENBSD 12 /* OpenBSD */
-#define ELFOSABI_ARM 97 /* ARM */
-#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */
-
-/* e_ident */
-#define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
- (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \
- (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \
- (ehdr).e_ident[EI_MAG3] == ELFMAG3)
-
-/* ELF Header */
-typedef struct elfhdr {
- unsigned char e_ident[EI_NIDENT]; /* ELF Identification */
- Elf32_Half e_type; /* object file type */
- Elf32_Half e_machine; /* machine */
- Elf32_Word e_version; /* object file version */
- Elf32_Addr e_entry; /* virtual entry point */
- Elf32_Off e_phoff; /* program header table offset */
- Elf32_Off e_shoff; /* section header table offset */
- Elf32_Word e_flags; /* processor-specific flags */
- Elf32_Half e_ehsize; /* ELF header size */
- Elf32_Half e_phentsize; /* program header entry size */
- Elf32_Half e_phnum; /* number of program header entries */
- Elf32_Half e_shentsize; /* section header entry size */
- Elf32_Half e_shnum; /* number of section header entries */
- Elf32_Half e_shstrndx; /* section header table''s "section
- header string table" entry offset */
-} Elf32_Ehdr;
-
-typedef struct {
- unsigned char e_ident[EI_NIDENT]; /* Id bytes */
- Elf64_Quarter e_type; /* file type */
- Elf64_Quarter e_machine; /* machine type */
- Elf64_Half e_version; /* version number */
- Elf64_Addr e_entry; /* entry point */
- Elf64_Off e_phoff; /* Program hdr offset */
- Elf64_Off e_shoff; /* Section hdr offset */
- Elf64_Half e_flags; /* Processor flags */
- Elf64_Quarter e_ehsize; /* sizeof ehdr */
- Elf64_Quarter e_phentsize; /* Program header entry size */
- Elf64_Quarter e_phnum; /* Number of program headers */
- Elf64_Quarter e_shentsize; /* Section header entry size */
- Elf64_Quarter e_shnum; /* Number of section headers */
- Elf64_Quarter e_shstrndx; /* String table index */
-} Elf64_Ehdr;
-
-/* e_type */
-#define ET_NONE 0 /* No file type */
-#define ET_REL 1 /* relocatable file */
-#define ET_EXEC 2 /* executable file */
-#define ET_DYN 3 /* shared object file */
-#define ET_CORE 4 /* core file */
-#define ET_NUM 5 /* number of types */
-#define ET_LOPROC 0xff00 /* reserved range for processor */
-#define ET_HIPROC 0xffff /* specific e_type */
-
-/* e_machine */
-#define EM_NONE 0 /* No Machine */
-#define EM_M32 1 /* AT&T WE 32100 */
-#define EM_SPARC 2 /* SPARC */
-#define EM_386 3 /* Intel 80386 */
-#define EM_68K 4 /* Motorola 68000 */
-#define EM_88K 5 /* Motorola 88000 */
-#define EM_486 6 /* Intel 80486 - unused? */
-#define EM_860 7 /* Intel 80860 */
-#define EM_MIPS 8 /* MIPS R3000 Big-Endian only */
-/*
- * Don''t know if EM_MIPS_RS4_BE,
- * EM_SPARC64, EM_PARISC,
- * or EM_PPC are ABI compliant
- */
-#define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */
-#define EM_SPARC64 11 /* SPARC v9 64-bit unoffical */
-#define EM_PARISC 15 /* HPPA */
-#define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */
-#define EM_PPC 20 /* PowerPC */
-#define EM_PPC64 21 /* PowerPC 64-bit */
-#define EM_ARM 40 /* Advanced RISC Machines ARM */
-#define EM_ALPHA 41 /* DEC ALPHA */
-#define EM_SPARCV9 43 /* SPARC version 9 */
-#define EM_ALPHA_EXP 0x9026 /* DEC ALPHA */
-#define EM_IA_64 50 /* Intel Merced */
-#define EM_X86_64 62 /* AMD x86-64 architecture */
-#define EM_VAX 75 /* DEC VAX */
-
-/* Version */
-#define EV_NONE 0 /* Invalid */
-#define EV_CURRENT 1 /* Current */
-#define EV_NUM 2 /* number of versions */
-
-/* Section Header */
-typedef struct {
- Elf32_Word sh_name; /* name - index into section header
- string table section */
- Elf32_Word sh_type; /* type */
- Elf32_Word sh_flags; /* flags */
- Elf32_Addr sh_addr; /* address */
- Elf32_Off sh_offset; /* file offset */
- Elf32_Word sh_size; /* section size */
- Elf32_Word sh_link; /* section header table index link */
- Elf32_Word sh_info; /* extra information */
- Elf32_Word sh_addralign; /* address alignment */
- Elf32_Word sh_entsize; /* section entry size */
-} Elf32_Shdr;
-
-typedef struct {
- Elf64_Half sh_name; /* section name */
- Elf64_Half sh_type; /* section type */
- Elf64_Xword sh_flags; /* section flags */
- Elf64_Addr sh_addr; /* virtual address */
- Elf64_Off sh_offset; /* file offset */
- Elf64_Xword sh_size; /* section size */
- Elf64_Half sh_link; /* link to another */
- Elf64_Half sh_info; /* misc info */
- Elf64_Xword sh_addralign; /* memory alignment */
- Elf64_Xword sh_entsize; /* table entry size */
-} Elf64_Shdr;
-
-/* Special Section Indexes */
-#define SHN_UNDEF 0 /* undefined */
-#define SHN_LORESERVE 0xff00 /* lower bounds of reserved indexes */
-#define SHN_LOPROC 0xff00 /* reserved range for processor */
-#define SHN_HIPROC 0xff1f /* specific section indexes */
-#define SHN_ABS 0xfff1 /* absolute value */
-#define SHN_COMMON 0xfff2 /* common symbol */
-#define SHN_HIRESERVE 0xffff /* upper bounds of reserved indexes */
-
-/* sh_type */
-#define SHT_NULL 0 /* inactive */
-#define SHT_PROGBITS 1 /* program defined information */
-#define SHT_SYMTAB 2 /* symbol table section */
-#define SHT_STRTAB 3 /* string table section */
-#define SHT_RELA 4 /* relocation section with addends*/
-#define SHT_HASH 5 /* symbol hash table section */
-#define SHT_DYNAMIC 6 /* dynamic section */
-#define SHT_NOTE 7 /* note section */
-#define SHT_NOBITS 8 /* no space section */
-#define SHT_REL 9 /* relation section without addends */
-#define SHT_SHLIB 10 /* reserved - purpose unknown */
-#define SHT_DYNSYM 11 /* dynamic symbol table section */
-#define SHT_NUM 12 /* number of section types */
-#define SHT_LOPROC 0x70000000 /* reserved range for processor */
-#define SHT_HIPROC 0x7fffffff /* specific section header types */
-#define SHT_LOUSER 0x80000000 /* reserved range for application */
-#define SHT_HIUSER 0xffffffff /* specific indexes */
-
-/* Section names */
-#define ELF_BSS ".bss" /* uninitialized data */
-#define ELF_DATA ".data" /* initialized data */
-#define ELF_DEBUG ".debug" /* debug */
-#define ELF_DYNAMIC ".dynamic" /* dynamic linking information */
-#define ELF_DYNSTR ".dynstr" /* dynamic string table */
-#define ELF_DYNSYM ".dynsym" /* dynamic symbol table */
-#define ELF_FINI ".fini" /* termination code */
-#define ELF_GOT ".got" /* global offset table */
-#define ELF_HASH ".hash" /* symbol hash table */
-#define ELF_INIT ".init" /* initialization code */
-#define ELF_REL_DATA ".rel.data" /* relocation data */
-#define ELF_REL_FINI ".rel.fini" /* relocation termination code */
-#define ELF_REL_INIT ".rel.init" /* relocation initialization code
*/
-#define ELF_REL_DYN ".rel.dyn" /* relocaltion dynamic link info
*/
-#define ELF_REL_RODATA ".rel.rodata" /* relocation read-only data */
-#define ELF_REL_TEXT ".rel.text" /* relocation code */
-#define ELF_RODATA ".rodata" /* read-only data */
-#define ELF_SHSTRTAB ".shstrtab" /* section header string table */
-#define ELF_STRTAB ".strtab" /* string table */
-#define ELF_SYMTAB ".symtab" /* symbol table */
-#define ELF_TEXT ".text" /* code */
-
-
-/* Section Attribute Flags - sh_flags */
-#define SHF_WRITE 0x1 /* Writable */
-#define SHF_ALLOC 0x2 /* occupies memory */
-#define SHF_EXECINSTR 0x4 /* executable */
-#define SHF_MASKPROC 0xf0000000 /* reserved bits for processor */
- /* specific section attributes */
-
-/* Symbol Table Entry */
-typedef struct elf32_sym {
- Elf32_Word st_name; /* name - index into string table */
- Elf32_Addr st_value; /* symbol value */
- Elf32_Word st_size; /* symbol size */
- unsigned char st_info; /* type and binding */
- unsigned char st_other; /* 0 - no defined meaning */
- Elf32_Half st_shndx; /* section header index */
-} Elf32_Sym;
-
-typedef struct {
- Elf64_Half st_name; /* Symbol name index in str table */
- Elf_Byte st_info; /* type / binding attrs */
- Elf_Byte st_other; /* unused */
- Elf64_Quarter st_shndx; /* section index of symbol */
- Elf64_Xword st_value; /* value of symbol */
- Elf64_Xword st_size; /* size of symbol */
-} Elf64_Sym;
-
-/* Symbol table index */
-#define STN_UNDEF 0 /* undefined */
-
-/* Extract symbol info - st_info */
-#define ELF32_ST_BIND(x) ((x) >> 4)
-#define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf)
-#define ELF32_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf))
-
-#define ELF64_ST_BIND(x) ((x) >> 4)
-#define ELF64_ST_TYPE(x) (((unsigned int) x) & 0xf)
-#define ELF64_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf))
-
-/* Symbol Binding - ELF32_ST_BIND - st_info */
-#define STB_LOCAL 0 /* Local symbol */
-#define STB_GLOBAL 1 /* Global symbol */
-#define STB_WEAK 2 /* like global - lower precedence */
-#define STB_NUM 3 /* number of symbol bindings */
-#define STB_LOPROC 13 /* reserved range for processor */
-#define STB_HIPROC 15 /* specific symbol bindings */
-
-/* Symbol type - ELF32_ST_TYPE - st_info */
-#define STT_NOTYPE 0 /* not specified */
-#define STT_OBJECT 1 /* data object */
-#define STT_FUNC 2 /* function */
-#define STT_SECTION 3 /* section */
-#define STT_FILE 4 /* file */
-#define STT_NUM 5 /* number of symbol types */
-#define STT_LOPROC 13 /* reserved range for processor */
-#define STT_HIPROC 15 /* specific symbol types */
-
-/* Relocation entry with implicit addend */
-typedef struct {
- Elf32_Addr r_offset; /* offset of relocation */
- Elf32_Word r_info; /* symbol table index and type */
-} Elf32_Rel;
-
-/* Relocation entry with explicit addend */
-typedef struct {
- Elf32_Addr r_offset; /* offset of relocation */
- Elf32_Word r_info; /* symbol table index and type */
- Elf32_Sword r_addend;
-} Elf32_Rela;
-
-/* Extract relocation info - r_info */
-#define ELF32_R_SYM(i) ((i) >> 8)
-#define ELF32_R_TYPE(i) ((unsigned char) (i))
-#define ELF32_R_INFO(s,t) (((s) << 8) + (unsigned char)(t))
-
-typedef struct {
- Elf64_Xword r_offset; /* where to do it */
- Elf64_Xword r_info; /* index & type of relocation */
-} Elf64_Rel;
-
-typedef struct {
- Elf64_Xword r_offset; /* where to do it */
- Elf64_Xword r_info; /* index & type of relocation */
- Elf64_Sxword r_addend; /* adjustment value */
-} Elf64_Rela;
-
-#define ELF64_R_SYM(info) ((info) >> 32)
-#define ELF64_R_TYPE(info) ((info) & 0xFFFFFFFF)
-#define ELF64_R_INFO(s,t) (((s) << 32) + (u_int32_t)(t))
-
-/* Program Header */
-typedef struct {
- Elf32_Word p_type; /* segment type */
- Elf32_Off p_offset; /* segment offset */
- Elf32_Addr p_vaddr; /* virtual address of segment */
- Elf32_Addr p_paddr; /* physical address - ignored? */
- Elf32_Word p_filesz; /* number of bytes in file for seg. */
- Elf32_Word p_memsz; /* number of bytes in mem. for seg. */
- Elf32_Word p_flags; /* flags */
- Elf32_Word p_align; /* memory alignment */
-} Elf32_Phdr;
-
-typedef struct {
- Elf64_Half p_type; /* entry type */
- Elf64_Half p_flags; /* flags */
- Elf64_Off p_offset; /* offset */
- Elf64_Addr p_vaddr; /* virtual address */
- Elf64_Addr p_paddr; /* physical address */
- Elf64_Xword p_filesz; /* file size */
- Elf64_Xword p_memsz; /* memory size */
- Elf64_Xword p_align; /* memory & file alignment */
-} Elf64_Phdr;
-
-/* Segment types - p_type */
-#define PT_NULL 0 /* unused */
-#define PT_LOAD 1 /* loadable segment */
-#define PT_DYNAMIC 2 /* dynamic linking section */
-#define PT_INTERP 3 /* the RTLD */
-#define PT_NOTE 4 /* auxiliary information */
-#define PT_SHLIB 5 /* reserved - purpose undefined */
-#define PT_PHDR 6 /* program header */
-#define PT_NUM 7 /* Number of segment types */
-#define PT_LOPROC 0x70000000 /* reserved range for processor */
-#define PT_HIPROC 0x7fffffff /* specific segment types */
-
-/* Segment flags - p_flags */
-#define PF_X 0x1 /* Executable */
-#define PF_W 0x2 /* Writable */
-#define PF_R 0x4 /* Readable */
-#define PF_MASKPROC 0xf0000000 /* reserved bits for processor */
- /* specific segment flags */
-
-/* Dynamic structure */
-typedef struct {
- Elf32_Sword d_tag; /* controls meaning of d_val */
- union {
- Elf32_Word d_val; /* Multiple meanings - see d_tag */
- Elf32_Addr d_ptr; /* program virtual address */
- } d_un;
-} Elf32_Dyn;
-
-typedef struct {
- Elf64_Xword d_tag; /* controls meaning of d_val */
- union {
- Elf64_Addr d_ptr;
- Elf64_Xword d_val;
- } d_un;
-} Elf64_Dyn;
-
-/* Dynamic Array Tags - d_tag */
-#define DT_NULL 0 /* marks end of _DYNAMIC array */
-#define DT_NEEDED 1 /* string table offset of needed lib */
-#define DT_PLTRELSZ 2 /* size of relocation entries in PLT */
-#define DT_PLTGOT 3 /* address PLT/GOT */
-#define DT_HASH 4 /* address of symbol hash table */
-#define DT_STRTAB 5 /* address of string table */
-#define DT_SYMTAB 6 /* address of symbol table */
-#define DT_RELA 7 /* address of relocation table */
-#define DT_RELASZ 8 /* size of relocation table */
-#define DT_RELAENT 9 /* size of relocation entry */
-#define DT_STRSZ 10 /* size of string table */
-#define DT_SYMENT 11 /* size of symbol table entry */
-#define DT_INIT 12 /* address of initialization func. */
-#define DT_FINI 13 /* address of termination function */
-#define DT_SONAME 14 /* string table offset of shared obj */
-#define DT_RPATH 15 /* string table offset of library
- search path */
-#define DT_SYMBOLIC 16 /* start sym search in shared obj. */
-#define DT_REL 17 /* address of rel. tbl. w addends */
-#define DT_RELSZ 18 /* size of DT_REL relocation table */
-#define DT_RELENT 19 /* size of DT_REL relocation entry */
-#define DT_PLTREL 20 /* PLT referenced relocation entry */
-#define DT_DEBUG 21 /* bugger */
-#define DT_TEXTREL 22 /* Allow rel. mod. to unwritable seg */
-#define DT_JMPREL 23 /* add. of PLT''s relocation entries */
-#define DT_BIND_NOW 24 /* Bind now regardless of env setting */
-#define DT_NUM 25 /* Number used. */
-#define DT_LOPROC 0x70000000 /* reserved range for processor */
-#define DT_HIPROC 0x7fffffff /* specific dynamic array tags */
-
-/* Standard ELF hashing function */
-unsigned int elf_hash(const unsigned char *name);
-
-/*
- * Note Definitions
- */
-typedef struct {
- Elf32_Word namesz;
- Elf32_Word descsz;
- Elf32_Word type;
-} Elf32_Note;
-
-typedef struct {
- Elf64_Half namesz;
- Elf64_Half descsz;
- Elf64_Half type;
-} Elf64_Note;
-
-
-#if defined(ELFSIZE)
-#define CONCAT(x,y) __CONCAT(x,y)
-#define ELFNAME(x) CONCAT(elf,CONCAT(ELFSIZE,CONCAT(_,x)))
-#define ELFNAME2(x,y) CONCAT(x,CONCAT(_elf,CONCAT(ELFSIZE,CONCAT(_,y))))
-#define ELFNAMEEND(x) CONCAT(x,CONCAT(_elf,ELFSIZE))
-#define ELFDEFNNAME(x) CONCAT(ELF,CONCAT(ELFSIZE,CONCAT(_,x)))
-#endif
-
-#if defined(ELFSIZE) && (ELFSIZE == 32)
-#define Elf_Ehdr Elf32_Ehdr
-#define Elf_Phdr Elf32_Phdr
-#define Elf_Shdr Elf32_Shdr
-#define Elf_Sym Elf32_Sym
-#define Elf_Rel Elf32_Rel
-#define Elf_RelA Elf32_Rela
-#define Elf_Dyn Elf32_Dyn
-#define Elf_Word Elf32_Word
-#define Elf_Sword Elf32_Sword
-#define Elf_Addr Elf32_Addr
-#define Elf_Off Elf32_Off
-#define Elf_Nhdr Elf32_Nhdr
-#define Elf_Note Elf32_Note
-
-#define ELF_R_SYM ELF32_R_SYM
-#define ELF_R_TYPE ELF32_R_TYPE
-#define ELF_R_INFO ELF32_R_INFO
-#define ELFCLASS ELFCLASS32
-
-#define ELF_ST_BIND ELF32_ST_BIND
-#define ELF_ST_TYPE ELF32_ST_TYPE
-#define ELF_ST_INFO ELF32_ST_INFO
-
-#define AuxInfo Aux32Info
-#elif defined(ELFSIZE) && (ELFSIZE == 64)
-#define Elf_Ehdr Elf64_Ehdr
-#define Elf_Phdr Elf64_Phdr
-#define Elf_Shdr Elf64_Shdr
-#define Elf_Sym Elf64_Sym
-#define Elf_Rel Elf64_Rel
-#define Elf_RelA Elf64_Rela
-#define Elf_Dyn Elf64_Dyn
-#define Elf_Word Elf64_Word
-#define Elf_Sword Elf64_Sword
-#define Elf_Addr Elf64_Addr
-#define Elf_Off Elf64_Off
-#define Elf_Nhdr Elf64_Nhdr
-#define Elf_Note Elf64_Note
-
-#define ELF_R_SYM ELF64_R_SYM
-#define ELF_R_TYPE ELF64_R_TYPE
-#define ELF_R_INFO ELF64_R_INFO
-#define ELFCLASS ELFCLASS64
-
-#define ELF_ST_BIND ELF64_ST_BIND
-#define ELF_ST_TYPE ELF64_ST_TYPE
-#define ELF_ST_INFO ELF64_ST_INFO
-
-#define AuxInfo Aux64Info
-#endif
-
+#include <xen/elfstructs.h>
Index: build-32-unstable-13377/xen/include/xen/elf.h
==================================================================---
build-32-unstable-13377.orig/xen/include/xen/elf.h
+++ build-32-unstable-13377/xen/include/xen/elf.h
@@ -27,495 +27,7 @@
#ifndef __XEN_ELF_H__
#define __XEN_ELF_H__
-typedef u8 Elf_Byte;
-
-typedef u32 Elf32_Addr; /* Unsigned program address */
-typedef u32 Elf32_Off; /* Unsigned file offset */
-typedef s32 Elf32_Sword; /* Signed large integer */
-typedef u32 Elf32_Word; /* Unsigned large integer */
-typedef u16 Elf32_Half; /* Unsigned medium integer */
-
-typedef u64 Elf64_Addr;
-typedef u64 Elf64_Off;
-typedef s32 Elf64_Shalf;
-
-typedef s32 Elf64_Sword;
-typedef u32 Elf64_Word;
-
-typedef s64 Elf64_Sxword;
-typedef u64 Elf64_Xword;
-
-typedef u32 Elf64_Half;
-typedef u16 Elf64_Quarter;
-
-/*
- * e_ident[] identification indexes
- * See http://www.caldera.com/developers/gabi/2000-07-17/ch4.eheader.html
- */
-#define EI_MAG0 0 /* file ID */
-#define EI_MAG1 1 /* file ID */
-#define EI_MAG2 2 /* file ID */
-#define EI_MAG3 3 /* file ID */
-#define EI_CLASS 4 /* file class */
-#define EI_DATA 5 /* data encoding */
-#define EI_VERSION 6 /* ELF header version */
-#define EI_OSABI 7 /* OS/ABI ID */
-#define EI_ABIVERSION 8 /* ABI version */
-#define EI_PAD 9 /* start of pad bytes */
-#define EI_NIDENT 16 /* Size of e_ident[] */
-
-/* e_ident[] magic number */
-#define ELFMAG0 0x7f /* e_ident[EI_MAG0] */
-#define ELFMAG1 ''E'' /* e_ident[EI_MAG1] */
-#define ELFMAG2 ''L'' /* e_ident[EI_MAG2] */
-#define ELFMAG3 ''F'' /* e_ident[EI_MAG3] */
-#define ELFMAG "\177ELF" /* magic */
-#define SELFMAG 4 /* size of magic */
-
-/* e_ident[] file class */
-#define ELFCLASSNONE 0 /* invalid */
-#define ELFCLASS32 1 /* 32-bit objs */
-#define ELFCLASS64 2 /* 64-bit objs */
-#define ELFCLASSNUM 3 /* number of classes */
-
-/* e_ident[] data encoding */
-#define ELFDATANONE 0 /* invalid */
-#define ELFDATA2LSB 1 /* Little-Endian */
-#define ELFDATA2MSB 2 /* Big-Endian */
-#define ELFDATANUM 3 /* number of data encode defines */
-
-/* e_ident[] Operating System/ABI */
-#define ELFOSABI_SYSV 0 /* UNIX System V ABI */
-#define ELFOSABI_HPUX 1 /* HP-UX operating system */
-#define ELFOSABI_NETBSD 2 /* NetBSD */
-#define ELFOSABI_LINUX 3 /* GNU/Linux */
-#define ELFOSABI_HURD 4 /* GNU/Hurd */
-#define ELFOSABI_86OPEN 5 /* 86Open common IA32 ABI */
-#define ELFOSABI_SOLARIS 6 /* Solaris */
-#define ELFOSABI_MONTEREY 7 /* Monterey */
-#define ELFOSABI_IRIX 8 /* IRIX */
-#define ELFOSABI_FREEBSD 9 /* FreeBSD */
-#define ELFOSABI_TRU64 10 /* TRU64 UNIX */
-#define ELFOSABI_MODESTO 11 /* Novell Modesto */
-#define ELFOSABI_OPENBSD 12 /* OpenBSD */
-#define ELFOSABI_ARM 97 /* ARM */
-#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */
-
-/* e_ident */
-#define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
- (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \
- (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \
- (ehdr).e_ident[EI_MAG3] == ELFMAG3)
-
-/* ELF Header */
-typedef struct elfhdr {
- unsigned char e_ident[EI_NIDENT]; /* ELF Identification */
- Elf32_Half e_type; /* object file type */
- Elf32_Half e_machine; /* machine */
- Elf32_Word e_version; /* object file version */
- Elf32_Addr e_entry; /* virtual entry point */
- Elf32_Off e_phoff; /* program header table offset */
- Elf32_Off e_shoff; /* section header table offset */
- Elf32_Word e_flags; /* processor-specific flags */
- Elf32_Half e_ehsize; /* ELF header size */
- Elf32_Half e_phentsize; /* program header entry size */
- Elf32_Half e_phnum; /* number of program header entries */
- Elf32_Half e_shentsize; /* section header entry size */
- Elf32_Half e_shnum; /* number of section header entries */
- Elf32_Half e_shstrndx; /* section header table''s "section
- header string table" entry offset */
-} Elf32_Ehdr;
-
-typedef struct {
- unsigned char e_ident[EI_NIDENT]; /* Id bytes */
- Elf64_Quarter e_type; /* file type */
- Elf64_Quarter e_machine; /* machine type */
- Elf64_Half e_version; /* version number */
- Elf64_Addr e_entry; /* entry point */
- Elf64_Off e_phoff; /* Program hdr offset */
- Elf64_Off e_shoff; /* Section hdr offset */
- Elf64_Half e_flags; /* Processor flags */
- Elf64_Quarter e_ehsize; /* sizeof ehdr */
- Elf64_Quarter e_phentsize; /* Program header entry size */
- Elf64_Quarter e_phnum; /* Number of program headers */
- Elf64_Quarter e_shentsize; /* Section header entry size */
- Elf64_Quarter e_shnum; /* Number of section headers */
- Elf64_Quarter e_shstrndx; /* String table index */
-} Elf64_Ehdr;
-
-/* e_type */
-#define ET_NONE 0 /* No file type */
-#define ET_REL 1 /* relocatable file */
-#define ET_EXEC 2 /* executable file */
-#define ET_DYN 3 /* shared object file */
-#define ET_CORE 4 /* core file */
-#define ET_NUM 5 /* number of types */
-#define ET_LOPROC 0xff00 /* reserved range for processor */
-#define ET_HIPROC 0xffff /* specific e_type */
-
-/* e_machine */
-#define EM_NONE 0 /* No Machine */
-#define EM_M32 1 /* AT&T WE 32100 */
-#define EM_SPARC 2 /* SPARC */
-#define EM_386 3 /* Intel 80386 */
-#define EM_68K 4 /* Motorola 68000 */
-#define EM_88K 5 /* Motorola 88000 */
-#define EM_486 6 /* Intel 80486 - unused? */
-#define EM_860 7 /* Intel 80860 */
-#define EM_MIPS 8 /* MIPS R3000 Big-Endian only */
-/*
- * Don''t know if EM_MIPS_RS4_BE,
- * EM_SPARC64, EM_PARISC,
- * or EM_PPC are ABI compliant
- */
-#define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */
-#define EM_SPARC64 11 /* SPARC v9 64-bit unoffical */
-#define EM_PARISC 15 /* HPPA */
-#define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */
-#define EM_PPC 20 /* PowerPC */
-#define EM_PPC64 21 /* PowerPC 64-bit */
-#define EM_ARM 40 /* Advanced RISC Machines ARM */
-#define EM_ALPHA 41 /* DEC ALPHA */
-#define EM_SPARCV9 43 /* SPARC version 9 */
-#define EM_ALPHA_EXP 0x9026 /* DEC ALPHA */
-#define EM_IA_64 50 /* Intel Merced */
-#define EM_X86_64 62 /* AMD x86-64 architecture */
-#define EM_VAX 75 /* DEC VAX */
-
-/* Version */
-#define EV_NONE 0 /* Invalid */
-#define EV_CURRENT 1 /* Current */
-#define EV_NUM 2 /* number of versions */
-
-/* Section Header */
-typedef struct {
- Elf32_Word sh_name; /* name - index into section header
- string table section */
- Elf32_Word sh_type; /* type */
- Elf32_Word sh_flags; /* flags */
- Elf32_Addr sh_addr; /* address */
- Elf32_Off sh_offset; /* file offset */
- Elf32_Word sh_size; /* section size */
- Elf32_Word sh_link; /* section header table index link */
- Elf32_Word sh_info; /* extra information */
- Elf32_Word sh_addralign; /* address alignment */
- Elf32_Word sh_entsize; /* section entry size */
-} Elf32_Shdr;
-
-typedef struct {
- Elf64_Half sh_name; /* section name */
- Elf64_Half sh_type; /* section type */
- Elf64_Xword sh_flags; /* section flags */
- Elf64_Addr sh_addr; /* virtual address */
- Elf64_Off sh_offset; /* file offset */
- Elf64_Xword sh_size; /* section size */
- Elf64_Half sh_link; /* link to another */
- Elf64_Half sh_info; /* misc info */
- Elf64_Xword sh_addralign; /* memory alignment */
- Elf64_Xword sh_entsize; /* table entry size */
-} Elf64_Shdr;
-
-/* Special Section Indexes */
-#define SHN_UNDEF 0 /* undefined */
-#define SHN_LORESERVE 0xff00 /* lower bounds of reserved indexes */
-#define SHN_LOPROC 0xff00 /* reserved range for processor */
-#define SHN_HIPROC 0xff1f /* specific section indexes */
-#define SHN_ABS 0xfff1 /* absolute value */
-#define SHN_COMMON 0xfff2 /* common symbol */
-#define SHN_HIRESERVE 0xffff /* upper bounds of reserved indexes */
-
-/* sh_type */
-#define SHT_NULL 0 /* inactive */
-#define SHT_PROGBITS 1 /* program defined information */
-#define SHT_SYMTAB 2 /* symbol table section */
-#define SHT_STRTAB 3 /* string table section */
-#define SHT_RELA 4 /* relocation section with addends*/
-#define SHT_HASH 5 /* symbol hash table section */
-#define SHT_DYNAMIC 6 /* dynamic section */
-#define SHT_NOTE 7 /* note section */
-#define SHT_NOBITS 8 /* no space section */
-#define SHT_REL 9 /* relation section without addends */
-#define SHT_SHLIB 10 /* reserved - purpose unknown */
-#define SHT_DYNSYM 11 /* dynamic symbol table section */
-#define SHT_NUM 12 /* number of section types */
-#define SHT_LOPROC 0x70000000 /* reserved range for processor */
-#define SHT_HIPROC 0x7fffffff /* specific section header types */
-#define SHT_LOUSER 0x80000000 /* reserved range for application */
-#define SHT_HIUSER 0xffffffff /* specific indexes */
-
-/* Section names */
-#define ELF_BSS ".bss" /* uninitialized data */
-#define ELF_DATA ".data" /* initialized data */
-#define ELF_DEBUG ".debug" /* debug */
-#define ELF_DYNAMIC ".dynamic" /* dynamic linking information */
-#define ELF_DYNSTR ".dynstr" /* dynamic string table */
-#define ELF_DYNSYM ".dynsym" /* dynamic symbol table */
-#define ELF_FINI ".fini" /* termination code */
-#define ELF_GOT ".got" /* global offset table */
-#define ELF_HASH ".hash" /* symbol hash table */
-#define ELF_INIT ".init" /* initialization code */
-#define ELF_REL_DATA ".rel.data" /* relocation data */
-#define ELF_REL_FINI ".rel.fini" /* relocation termination code */
-#define ELF_REL_INIT ".rel.init" /* relocation initialization code
*/
-#define ELF_REL_DYN ".rel.dyn" /* relocaltion dynamic link info
*/
-#define ELF_REL_RODATA ".rel.rodata" /* relocation read-only data */
-#define ELF_REL_TEXT ".rel.text" /* relocation code */
-#define ELF_RODATA ".rodata" /* read-only data */
-#define ELF_SHSTRTAB ".shstrtab" /* section header string table */
-#define ELF_STRTAB ".strtab" /* string table */
-#define ELF_SYMTAB ".symtab" /* symbol table */
-#define ELF_TEXT ".text" /* code */
-
-
-/* Section Attribute Flags - sh_flags */
-#define SHF_WRITE 0x1 /* Writable */
-#define SHF_ALLOC 0x2 /* occupies memory */
-#define SHF_EXECINSTR 0x4 /* executable */
-#define SHF_MASKPROC 0xf0000000 /* reserved bits for processor */
- /* specific section attributes */
-
-/* Symbol Table Entry */
-typedef struct elf32_sym {
- Elf32_Word st_name; /* name - index into string table */
- Elf32_Addr st_value; /* symbol value */
- Elf32_Word st_size; /* symbol size */
- unsigned char st_info; /* type and binding */
- unsigned char st_other; /* 0 - no defined meaning */
- Elf32_Half st_shndx; /* section header index */
-} Elf32_Sym;
-
-typedef struct {
- Elf64_Half st_name; /* Symbol name index in str table */
- Elf_Byte st_info; /* type / binding attrs */
- Elf_Byte st_other; /* unused */
- Elf64_Quarter st_shndx; /* section index of symbol */
- Elf64_Xword st_value; /* value of symbol */
- Elf64_Xword st_size; /* size of symbol */
-} Elf64_Sym;
-
-/* Symbol table index */
-#define STN_UNDEF 0 /* undefined */
-
-/* Extract symbol info - st_info */
-#define ELF32_ST_BIND(x) ((x) >> 4)
-#define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf)
-#define ELF32_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf))
-
-#define ELF64_ST_BIND(x) ((x) >> 4)
-#define ELF64_ST_TYPE(x) (((unsigned int) x) & 0xf)
-#define ELF64_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf))
-
-/* Symbol Binding - ELF32_ST_BIND - st_info */
-#define STB_LOCAL 0 /* Local symbol */
-#define STB_GLOBAL 1 /* Global symbol */
-#define STB_WEAK 2 /* like global - lower precedence */
-#define STB_NUM 3 /* number of symbol bindings */
-#define STB_LOPROC 13 /* reserved range for processor */
-#define STB_HIPROC 15 /* specific symbol bindings */
-
-/* Symbol type - ELF32_ST_TYPE - st_info */
-#define STT_NOTYPE 0 /* not specified */
-#define STT_OBJECT 1 /* data object */
-#define STT_FUNC 2 /* function */
-#define STT_SECTION 3 /* section */
-#define STT_FILE 4 /* file */
-#define STT_NUM 5 /* number of symbol types */
-#define STT_LOPROC 13 /* reserved range for processor */
-#define STT_HIPROC 15 /* specific symbol types */
-
-/* Relocation entry with implicit addend */
-typedef struct {
- Elf32_Addr r_offset; /* offset of relocation */
- Elf32_Word r_info; /* symbol table index and type */
-} Elf32_Rel;
-
-/* Relocation entry with explicit addend */
-typedef struct {
- Elf32_Addr r_offset; /* offset of relocation */
- Elf32_Word r_info; /* symbol table index and type */
- Elf32_Sword r_addend;
-} Elf32_Rela;
-
-/* Extract relocation info - r_info */
-#define ELF32_R_SYM(i) ((i) >> 8)
-#define ELF32_R_TYPE(i) ((unsigned char) (i))
-#define ELF32_R_INFO(s,t) (((s) << 8) + (unsigned char)(t))
-
-typedef struct {
- Elf64_Xword r_offset; /* where to do it */
- Elf64_Xword r_info; /* index & type of relocation */
-} Elf64_Rel;
-
-typedef struct {
- Elf64_Xword r_offset; /* where to do it */
- Elf64_Xword r_info; /* index & type of relocation */
- Elf64_Sxword r_addend; /* adjustment value */
-} Elf64_Rela;
-
-#define ELF64_R_SYM(info) ((info) >> 32)
-#define ELF64_R_TYPE(info) ((info) & 0xFFFFFFFF)
-#define ELF64_R_INFO(s,t) (((s) << 32) + (u32)(t))
-
-/* Program Header */
-typedef struct {
- Elf32_Word p_type; /* segment type */
- Elf32_Off p_offset; /* segment offset */
- Elf32_Addr p_vaddr; /* virtual address of segment */
- Elf32_Addr p_paddr; /* physical address - ignored? */
- Elf32_Word p_filesz; /* number of bytes in file for seg. */
- Elf32_Word p_memsz; /* number of bytes in mem. for seg. */
- Elf32_Word p_flags; /* flags */
- Elf32_Word p_align; /* memory alignment */
-} Elf32_Phdr;
-
-typedef struct {
- Elf64_Half p_type; /* entry type */
- Elf64_Half p_flags; /* flags */
- Elf64_Off p_offset; /* offset */
- Elf64_Addr p_vaddr; /* virtual address */
- Elf64_Addr p_paddr; /* physical address */
- Elf64_Xword p_filesz; /* file size */
- Elf64_Xword p_memsz; /* memory size */
- Elf64_Xword p_align; /* memory & file alignment */
-} Elf64_Phdr;
-
-/* Segment types - p_type */
-#define PT_NULL 0 /* unused */
-#define PT_LOAD 1 /* loadable segment */
-#define PT_DYNAMIC 2 /* dynamic linking section */
-#define PT_INTERP 3 /* the RTLD */
-#define PT_NOTE 4 /* auxiliary information */
-#define PT_SHLIB 5 /* reserved - purpose undefined */
-#define PT_PHDR 6 /* program header */
-#define PT_NUM 7 /* Number of segment types */
-#define PT_LOPROC 0x70000000 /* reserved range for processor */
-#define PT_HIPROC 0x7fffffff /* specific segment types */
-
-/* Segment flags - p_flags */
-#define PF_X 0x1 /* Executable */
-#define PF_W 0x2 /* Writable */
-#define PF_R 0x4 /* Readable */
-#define PF_MASKPROC 0xf0000000 /* reserved bits for processor */
- /* specific segment flags */
-
-/* Dynamic structure */
-typedef struct {
- Elf32_Sword d_tag; /* controls meaning of d_val */
- union {
- Elf32_Word d_val; /* Multiple meanings - see d_tag */
- Elf32_Addr d_ptr; /* program virtual address */
- } d_un;
-} Elf32_Dyn;
-
-typedef struct {
- Elf64_Xword d_tag; /* controls meaning of d_val */
- union {
- Elf64_Addr d_ptr;
- Elf64_Xword d_val;
- } d_un;
-} Elf64_Dyn;
-
-/* Dynamic Array Tags - d_tag */
-#define DT_NULL 0 /* marks end of _DYNAMIC array */
-#define DT_NEEDED 1 /* string table offset of needed lib */
-#define DT_PLTRELSZ 2 /* size of relocation entries in PLT */
-#define DT_PLTGOT 3 /* address PLT/GOT */
-#define DT_HASH 4 /* address of symbol hash table */
-#define DT_STRTAB 5 /* address of string table */
-#define DT_SYMTAB 6 /* address of symbol table */
-#define DT_RELA 7 /* address of relocation table */
-#define DT_RELASZ 8 /* size of relocation table */
-#define DT_RELAENT 9 /* size of relocation entry */
-#define DT_STRSZ 10 /* size of string table */
-#define DT_SYMENT 11 /* size of symbol table entry */
-#define DT_INIT 12 /* address of initialization func. */
-#define DT_FINI 13 /* address of termination function */
-#define DT_SONAME 14 /* string table offset of shared obj */
-#define DT_RPATH 15 /* string table offset of library
- search path */
-#define DT_SYMBOLIC 16 /* start sym search in shared obj. */
-#define DT_REL 17 /* address of rel. tbl. w addends */
-#define DT_RELSZ 18 /* size of DT_REL relocation table */
-#define DT_RELENT 19 /* size of DT_REL relocation entry */
-#define DT_PLTREL 20 /* PLT referenced relocation entry */
-#define DT_DEBUG 21 /* bugger */
-#define DT_TEXTREL 22 /* Allow rel. mod. to unwritable seg */
-#define DT_JMPREL 23 /* add. of PLT''s relocation entries */
-#define DT_BIND_NOW 24 /* Bind now regardless of env setting */
-#define DT_NUM 25 /* Number used. */
-#define DT_LOPROC 0x70000000 /* reserved range for processor */
-#define DT_HIPROC 0x7fffffff /* specific dynamic array tags */
-
-/* Standard ELF hashing function */
-unsigned int elf_hash(const unsigned char *name);
-
-/*
- * Note Definitions
- */
-
-typedef struct {
- u32 namesz;
- u32 descsz;
- u32 type;
-} Elf_Note; /* same format for both 32-bit and 64-bit ELF */
-
-#if defined(ELFSIZE)
-#define CONCAT(x,y) __CONCAT(x,y)
-#define ELFNAME(x) CONCAT(elf,CONCAT(ELFSIZE,CONCAT(_,x)))
-#define ELFNAME2(x,y) CONCAT(x,CONCAT(_elf,CONCAT(ELFSIZE,CONCAT(_,y))))
-#define ELFNAMEEND(x) CONCAT(x,CONCAT(_elf,ELFSIZE))
-#define ELFDEFNNAME(x) CONCAT(ELF,CONCAT(ELFSIZE,CONCAT(_,x)))
-#endif
-
-#if defined(ELFSIZE) && (ELFSIZE == 32)
-#define Elf_Ehdr Elf32_Ehdr
-#define Elf_Phdr Elf32_Phdr
-#define Elf_Shdr Elf32_Shdr
-#define Elf_Sym Elf32_Sym
-#define Elf_Rel Elf32_Rel
-#define Elf_RelA Elf32_Rela
-#define Elf_Dyn Elf32_Dyn
-#define Elf_Word Elf32_Word
-#define Elf_Sword Elf32_Sword
-#define Elf_Addr Elf32_Addr
-#define Elf_Off Elf32_Off
-#define Elf_Nhdr Elf32_Nhdr
-
-#define ELF_R_SYM ELF32_R_SYM
-#define ELF_R_TYPE ELF32_R_TYPE
-#define ELF_R_INFO ELF32_R_INFO
-#define ELFCLASS ELFCLASS32
-
-#define ELF_ST_BIND ELF32_ST_BIND
-#define ELF_ST_TYPE ELF32_ST_TYPE
-#define ELF_ST_INFO ELF32_ST_INFO
-
-#define AuxInfo Aux32Info
-#elif defined(ELFSIZE) && (ELFSIZE == 64)
-#define Elf_Ehdr Elf64_Ehdr
-#define Elf_Phdr Elf64_Phdr
-#define Elf_Shdr Elf64_Shdr
-#define Elf_Sym Elf64_Sym
-#define Elf_Rel Elf64_Rel
-#define Elf_RelA Elf64_Rela
-#define Elf_Dyn Elf64_Dyn
-#define Elf_Word Elf64_Word
-#define Elf_Sword Elf64_Sword
-#define Elf_Addr Elf64_Addr
-#define Elf_Off Elf64_Off
-#define Elf_Nhdr Elf64_Nhdr
-
-#define ELF_R_SYM ELF64_R_SYM
-#define ELF_R_TYPE ELF64_R_TYPE
-#define ELF_R_INFO ELF64_R_INFO
-#define ELFCLASS ELFCLASS64
-
-#define ELF_ST_BIND ELF64_ST_BIND
-#define ELF_ST_TYPE ELF64_ST_TYPE
-#define ELF_ST_INFO ELF64_ST_INFO
-
-#define AuxInfo Aux64Info
-#endif
+#include <public/elfstructs.h>
struct domain_setup_info;
extern int loadelfimage(struct domain_setup_info *);
Index: build-32-unstable-13377/xen/arch/x86/boot/mkelf32.c
==================================================================---
build-32-unstable-13377.orig/xen/arch/x86/boot/mkelf32.c
+++ build-32-unstable-13377/xen/arch/x86/boot/mkelf32.c
@@ -25,7 +25,7 @@
#define s16 int16_t
#define s32 int32_t
#define s64 int64_t
-#include "../../../include/xen/elf.h"
+#include "../../../include/public/elfstructs.h"
#define DYNAMICALLY_FILLED 0
#define RAW_OFFSET 128
--
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
Gerd Hoffmann
2007-Jan-23 14:53 UTC
[Xen-devel] [patch 2/5] libelf: use for x86 dom0 builder.
This patch switches the x86 dom0 builder over to libelf.
Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
---
xen/arch/ia64/xen/domain.c | 79 +++++------
xen/arch/x86/domain_build.c | 303 +++++++++++++++-----------------------------
xen/common/Makefile | 4
3 files changed, 148 insertions(+), 238 deletions(-)
Index: build-ia64-unstable-13282/xen/common/Makefile
==================================================================---
build-ia64-unstable-13282.orig/xen/common/Makefile
+++ build-ia64-unstable-13282/xen/common/Makefile
@@ -2,8 +2,8 @@ obj-y += acm_ops.o
obj-y += bitmap.o
obj-y += domctl.o
obj-y += domain.o
-obj-y += elf.o
-obj-$(CONFIG_COMPAT) += elf32.o
+#obj-y += elf.o
+#obj-$(CONFIG_COMPAT) += elf32.o
obj-y += event_channel.o
obj-y += grant_table.o
obj-y += kernel.o
Index: build-ia64-unstable-13282/xen/arch/x86/domain_build.c
==================================================================---
build-ia64-unstable-13282.orig/xen/arch/x86/domain_build.c
+++ build-ia64-unstable-13282/xen/arch/x86/domain_build.c
@@ -13,7 +13,6 @@
#include <xen/delay.h>
#include <xen/event.h>
#include <xen/console.h>
-#include <xen/elf.h>
#include <xen/kernel.h>
#include <xen/domain.h>
#include <xen/version.h>
@@ -29,7 +28,7 @@
#include <asm/shadow.h>
#include <public/version.h>
-#include <public/elfnote.h>
+#include <public/libelf.h>
extern unsigned long initial_images_nrpages(void);
extern void discard_initial_images(void);
@@ -190,69 +189,12 @@ static void process_dom0_ioports_disable
}
}
-static const char *feature_names[XENFEAT_NR_SUBMAPS*32] = {
- [XENFEAT_writable_page_tables] = "writable_page_tables",
- [XENFEAT_writable_descriptor_tables] =
"writable_descriptor_tables",
- [XENFEAT_auto_translated_physmap] = "auto_translated_physmap",
- [XENFEAT_supervisor_mode_kernel] = "supervisor_mode_kernel",
- [XENFEAT_pae_pgdir_above_4gb] = "pae_pgdir_above_4gb"
-};
-
-static void parse_features(
- const char *feats,
- uint32_t supported[XENFEAT_NR_SUBMAPS],
- uint32_t required[XENFEAT_NR_SUBMAPS])
-{
- const char *end, *p;
- int i, req;
-
- if ( (end = strchr(feats, '','')) == NULL )
- end = feats + strlen(feats);
-
- while ( feats < end )
- {
- p = strchr(feats, ''|'');
- if ( (p == NULL) || (p > end) )
- p = end;
-
- req = (*feats == ''!'');
- if ( req )
- feats++;
-
- for ( i = 0; i < XENFEAT_NR_SUBMAPS*32; i++ )
- {
- if ( feature_names[i] == NULL )
- continue;
-
- if ( strncmp(feature_names[i], feats, p-feats) == 0 )
- {
- set_bit(i, supported);
- if ( req )
- set_bit(i, required);
- break;
- }
- }
-
- if ( i == XENFEAT_NR_SUBMAPS*32 )
- {
- printk("Unknown kernel feature \"%.*s\".\n",
- (int)(p-feats), feats);
- if ( req )
- panic("Domain 0 requires an unknown hypervisor
feature.\n");
- }
-
- feats = p;
- if ( *feats == ''|'' )
- feats++;
- }
-}
-
int construct_dom0(struct domain *d,
unsigned long _image_start, unsigned long image_len,
unsigned long _initrd_start, unsigned long initrd_len,
char *cmdline)
{
- int i, rc, dom0_pae, xen_pae, order;
+ int i, rc, compatible, compat32, order, machine;
struct cpu_user_regs *regs;
unsigned long pfn, mfn;
unsigned long nr_pages;
@@ -263,9 +205,7 @@ int construct_dom0(struct domain *d,
struct page_info *page = NULL;
start_info_t *si;
struct vcpu *v = d->vcpu[0];
- const char *p;
unsigned long long value;
- int value_defined;
#if defined(__i386__)
char *image_start = (char *)_image_start; /* use lowmem mappings */
char *initrd_start = (char *)_initrd_start; /* use lowmem mappings */
@@ -287,7 +227,10 @@ int construct_dom0(struct domain *d,
* *_start address are page-aligned, except v_start (and v_end) which are
* superpage-aligned.
*/
- struct domain_setup_info dsi;
+ struct elf_binary elf;
+ struct elf_dom_parms parms;
+ unsigned long vkern_start;
+ unsigned long vkern_end;
unsigned long vinitrd_start;
unsigned long vinitrd_end;
unsigned long vphysmap_start;
@@ -298,6 +241,7 @@ int construct_dom0(struct domain *d,
unsigned long vstack_end;
unsigned long vpt_start;
unsigned long vpt_end;
+ unsigned long v_start;
unsigned long v_end;
/* Machine address of next candidate page-table page. */
@@ -312,21 +256,71 @@ int construct_dom0(struct domain *d,
BUG_ON(d->vcpu[0] == NULL);
BUG_ON(test_bit(_VCPUF_initialised, &v->vcpu_flags));
- memset(&dsi, 0, sizeof(struct domain_setup_info));
- dsi.image_addr = (unsigned long)image_start;
- dsi.image_len = image_len;
-
printk("*** LOADING DOMAIN 0 ***\n");
d->max_pages = ~0U;
nr_pages = compute_dom0_nr_pages();
- rc = parseelfimage(&dsi);
+ if (0 != (rc = elf_init(&elf, image_start, image_len)))
+ return rc;
+#ifdef VERBOSE
+ elf_set_verbose(&elf);
+#endif
+ elf_parse_binary(&elf);
+ if (0 != (elf_xen_parse(&elf, &parms)))
+ return rc;
+
+ /* compatibility check */
+ compatible = 0;
+ compat32 = 0;
+ machine = elf_uval(&elf, elf.ehdr, e_machine);
+ switch (CONFIG_PAGING_LEVELS) {
+ case 2: /* x86_32 */
+ if (parms.pae == PAEKERN_bimodal)
+ parms.pae = PAEKERN_no;
+ printk(" Xen kernel: 32-bit, lsb\n");
+ if (elf_32bit(&elf) && !parms.pae && machine ==
EM_386)
+ compatible = 1;
+ break;
+ case 3: /* x86_32p */
+ if (parms.pae == PAEKERN_bimodal)
+ parms.pae = PAEKERN_extended_cr3;
+ printk(" Xen kernel: 32-bit, PAE, lsb\n");
+ if (elf_32bit(&elf) && parms.pae && machine ==
EM_386)
+ compatible = 1;
+ break;
+ case 4: /* x86_64 */
+#ifndef CONFIG_COMPAT
+ printk(" Xen kernel: 64-bit, lsb\n");
+#else
+ printk(" Xen kernel: 64-bit, lsb, compat32\n");
+ if (elf_32bit(&elf) && parms.pae == PAEKERN_bimodal)
+ parms.pae = PAEKERN_extended_cr3;
+ if (elf_32bit(&elf) && parms.pae && machine ==
EM_386)
+ {
+ compat32 = 1;
+ compatible = 1;
+ }
+#endif
+ if (elf_64bit(&elf) && machine == EM_X86_64)
+ compatible = 1;
+ break;
+ }
+ printk(" Dom0 kernel: %s%s, %s, paddr 0x%" PRIx64 " ->
0x%" PRIx64 "\n",
+ elf_64bit(&elf) ? "64-bit" : "32-bit",
+ parms.pae ? ", PAE" : "",
+ elf_msb(&elf) ? "msb" : "lsb",
+ elf.pstart, elf.pend);
+
+ if ( !compatible )
+ {
+ printk("Mismatch between Xen and DOM0 kernel\n");
+ return -EINVAL;
+ }
+
#ifdef CONFIG_COMPAT
- if ( rc == -ENOSYS
- && !compat_disabled
- && (rc = parseelf32image(&dsi)) == 0 )
+ if (compat32)
{
l1_pgentry_t gdt_l1e;
@@ -348,42 +342,10 @@ int construct_dom0(struct domain *d,
local_flush_tlb_one(GDT_LDT_VIRT_START + FIRST_RESERVED_GDT_BYTE);
}
#endif
- if ( rc != 0)
- {
- if ( rc == -ENOSYS )
- printk("DOM0 image is not a Xen-compatible Elf
image.\n");
- return rc;
- }
-
- xen_pae = (CONFIG_PAGING_LEVELS == 3) || IS_COMPAT(d);
- if (dsi.pae_kernel == PAEKERN_bimodal)
- dom0_pae = xen_pae;
- else
- dom0_pae = (dsi.pae_kernel != PAEKERN_no);
- if ( dom0_pae != xen_pae )
- {
- printk("PAE mode mismatch between Xen and DOM0 (xen=%s,
dom0=%s)\n",
- xen_pae ? "yes" : "no", dom0_pae ?
"yes" : "no");
- return -EINVAL;
- }
-
- if ( xen_pae && (dsi.pae_kernel == PAEKERN_extended_cr3 ||
- dsi.pae_kernel == PAEKERN_bimodal) )
+ if ( parms.pae == PAEKERN_extended_cr3 )
set_bit(VMASST_TYPE_pae_extended_cr3, &d->vm_assist);
-#ifdef CONFIG_COMPAT
- if ( IS_COMPAT(d) )
- {
- value = xen_elf32note_numeric(&dsi, XEN_ELFNOTE_HV_START_LOW,
&value_defined);
- p = xen_elf32note_string(&dsi, XEN_ELFNOTE_FEATURES);
- }
- else
-#endif
- {
- value = xen_elfnote_numeric(&dsi, XEN_ELFNOTE_HV_START_LOW,
&value_defined);
- p = xen_elfnote_string(&dsi, XEN_ELFNOTE_FEATURES);
- }
- if ( value_defined )
+ if ( UNSET_ADDR != parms.virt_hv_start_low && elf_32bit(&elf) )
{
#if CONFIG_PAGING_LEVELS < 4
unsigned long mask = (1UL << L2_PAGETABLE_SHIFT) - 1;
@@ -393,7 +355,7 @@ int construct_dom0(struct domain *d,
: (1UL << L2_PAGETABLE_SHIFT) - 1;
#endif
- value = (value + mask) & ~mask;
+ value = (parms.virt_hv_start_low + mask) & ~mask;
#ifdef CONFIG_COMPAT
HYPERVISOR_COMPAT_VIRT_START(d) = max_t(unsigned int,
m2p_compat_vstart, value);
if ( value > (!IS_COMPAT(d) ?
@@ -404,21 +366,12 @@ int construct_dom0(struct domain *d,
#endif
panic("Domain 0 expects too high a hypervisor start
address.\n");
}
- if ( p != NULL )
- {
- parse_features(p,
- dom0_features_supported,
- dom0_features_required);
- printk("Domain 0 kernel supports features = { %08x }.\n",
- dom0_features_supported[0]);
- printk("Domain 0 kernel requires features = { %08x }.\n",
- dom0_features_required[0]);
- if ( dom0_features_required[0] )
+
+ if ( parms.f_required[0] /* Huh? -- kraxel */ )
panic("Domain 0 requires an unsupported hypervisor
feature.\n");
- }
/* Align load address to 4MB boundary. */
- dsi.v_start &= ~((1UL<<22)-1);
+ v_start = parms.virt_base & ~((1UL<<22)-1);
/*
* Why do we need this? The number of page-table frames depends on the
@@ -427,7 +380,9 @@ int construct_dom0(struct domain *d,
* read-only). We have a pair of simultaneous equations in two unknowns,
* which we solve by exhaustive search.
*/
- vinitrd_start = round_pgup(dsi.v_end);
+ vkern_start = parms.virt_kstart;
+ vkern_end = parms.virt_kend;
+ vinitrd_start = round_pgup(vkern_end);
vinitrd_end = vinitrd_start + initrd_len;
vphysmap_start = round_pgup(vinitrd_end);
vphysmap_end = vphysmap_start + (nr_pages * (!IS_COMPAT(d) ?
@@ -447,12 +402,12 @@ int construct_dom0(struct domain *d,
if ( (v_end - vstack_end) < (512UL << 10) )
v_end += 1UL << 22; /* Add extra 4MB to get >= 512kB
padding. */
#if defined(__i386__) && !defined(CONFIG_X86_PAE)
- if ( (((v_end - dsi.v_start + ((1UL<<L2_PAGETABLE_SHIFT)-1))
>>
+ if ( (((v_end - v_start + ((1UL<<L2_PAGETABLE_SHIFT)-1)) >>
L2_PAGETABLE_SHIFT) + 1) <= nr_pt_pages )
break;
#elif defined(__i386__) && defined(CONFIG_X86_PAE)
/* 5 pages: 1x 3rd + 4x 2nd level */
- if ( (((v_end - dsi.v_start + ((1UL<<L2_PAGETABLE_SHIFT)-1))
>>
+ if ( (((v_end - v_start + ((1UL<<L2_PAGETABLE_SHIFT)-1)) >>
L2_PAGETABLE_SHIFT) + 5) <= nr_pt_pages )
break;
#elif defined(__x86_64__)
@@ -460,17 +415,17 @@ int construct_dom0(struct domain *d,
(((((_h) + ((1UL<<(_s))-1)) & ~((1UL<<(_s))-1)) - \
((_l) & ~((1UL<<(_s))-1))) >> (_s))
if ( (1 + /* # L4 */
- NR(dsi.v_start, v_end, L4_PAGETABLE_SHIFT) + /* # L3 */
+ NR(v_start, v_end, L4_PAGETABLE_SHIFT) + /* # L3 */
(!IS_COMPAT(d) ?
- NR(dsi.v_start, v_end, L3_PAGETABLE_SHIFT) : /* # L2 */
+ NR(v_start, v_end, L3_PAGETABLE_SHIFT) : /* # L2 */
4) + /* # compat L2 */
- NR(dsi.v_start, v_end, L2_PAGETABLE_SHIFT)) /* # L1 */
+ NR(v_start, v_end, L2_PAGETABLE_SHIFT)) /* # L1 */
<= nr_pt_pages )
break;
#endif
}
- order = get_order_from_bytes(v_end - dsi.v_start);
+ order = get_order_from_bytes(v_end - v_start);
if ( (1UL << order) > nr_pages )
panic("Domain 0 allocation is too small for kernel
image.\n");
@@ -497,24 +452,24 @@ int construct_dom0(struct domain *d,
" Page tables: %p->%p\n"
" Boot stack: %p->%p\n"
" TOTAL: %p->%p\n",
- _p(dsi.v_kernstart), _p(dsi.v_kernend),
+ _p(vkern_start), _p(vkern_end),
_p(vinitrd_start), _p(vinitrd_end),
_p(vphysmap_start), _p(vphysmap_end),
_p(vstartinfo_start), _p(vstartinfo_end),
_p(vpt_start), _p(vpt_end),
_p(vstack_start), _p(vstack_end),
- _p(dsi.v_start), _p(v_end));
- printk(" ENTRY ADDRESS: %p\n", _p(dsi.v_kernentry));
+ _p(v_start), _p(v_end));
+ printk(" ENTRY ADDRESS: %p\n", _p(parms.virt_entry));
- if ( ((v_end - dsi.v_start)>>PAGE_SHIFT) > nr_pages )
+ if ( ((v_end - v_start)>>PAGE_SHIFT) > nr_pages )
{
printk("Initial guest OS requires too much space\n"
"(%luMB is greater than %luMB limit)\n",
- (v_end-dsi.v_start)>>20, nr_pages>>(20-PAGE_SHIFT));
+ (v_end-v_start)>>20, nr_pages>>(20-PAGE_SHIFT));
return -ENOMEM;
}
- mpt_alloc = (vpt_start - dsi.v_start) +
+ mpt_alloc = (vpt_start - v_start) +
(unsigned long)pfn_to_paddr(alloc_spfn);
#if defined(__i386__)
@@ -522,7 +477,7 @@ int construct_dom0(struct domain *d,
* Protect the lowest 1GB of memory. We use a temporary mapping there
* from which we copy the kernel and ramdisk images.
*/
- if ( dsi.v_start < (1UL<<30) )
+ if ( v_start < (1UL<<30) )
{
printk("Initial loading isn''t allowed to lowest 1GB of
memory.\n");
return -EINVAL;
@@ -552,9 +507,9 @@ int construct_dom0(struct domain *d,
l2e_from_page(virt_to_page(d->arch.mm_perdomain_pt) + i,
__PAGE_HYPERVISOR);
- l2tab += l2_linear_offset(dsi.v_start);
+ l2tab += l2_linear_offset(v_start);
mfn = alloc_spfn;
- for ( count = 0; count < ((v_end-dsi.v_start)>>PAGE_SHIFT);
count++ )
+ for ( count = 0; count < ((v_end-v_start)>>PAGE_SHIFT); count++ )
{
if ( !((unsigned long)l1tab & (PAGE_SIZE-1)) )
{
@@ -564,7 +519,7 @@ int construct_dom0(struct domain *d,
l2tab++;
clear_page(l1tab);
if ( count == 0 )
- l1tab += l1_table_offset(dsi.v_start);
+ l1tab += l1_table_offset(v_start);
}
*l1tab = l1e_from_pfn(mfn, L1_PROT);
l1tab++;
@@ -654,7 +609,7 @@ int construct_dom0(struct domain *d,
/* Overlap with Xen protected area? */
if ( !IS_COMPAT(d) ?
- ((dsi.v_start < HYPERVISOR_VIRT_END) &&
+ ((v_start < HYPERVISOR_VIRT_END) &&
(v_end > HYPERVISOR_VIRT_START)) :
(v_end > HYPERVISOR_COMPAT_VIRT_START(d)) )
{
@@ -694,9 +649,9 @@ int construct_dom0(struct domain *d,
panic("Not enough RAM for domain 0 hypercall argument
translation.\n");
}
- l4tab += l4_table_offset(dsi.v_start);
+ l4tab += l4_table_offset(v_start);
mfn = alloc_spfn;
- for ( count = 0; count < ((v_end-dsi.v_start)>>PAGE_SHIFT);
count++ )
+ for ( count = 0; count < ((v_end-v_start)>>PAGE_SHIFT); count++ )
{
if ( !((unsigned long)l1tab & (PAGE_SIZE-1)) )
{
@@ -704,14 +659,14 @@ int construct_dom0(struct domain *d,
l1start = l1tab = __va(mpt_alloc); mpt_alloc += PAGE_SIZE;
clear_page(l1tab);
if ( count == 0 )
- l1tab += l1_table_offset(dsi.v_start);
+ l1tab += l1_table_offset(v_start);
if ( !((unsigned long)l2tab & (PAGE_SIZE-1)) )
{
maddr_to_page(mpt_alloc)->u.inuse.type_info =
PGT_l2_page_table;
l2start = l2tab = __va(mpt_alloc); mpt_alloc += PAGE_SIZE;
clear_page(l2tab);
if ( count == 0 )
- l2tab += l2_table_offset(dsi.v_start);
+ l2tab += l2_table_offset(v_start);
if ( !((unsigned long)l3tab & (PAGE_SIZE-1)) )
{
maddr_to_page(mpt_alloc)->u.inuse.type_info @@ -719,7
+674,7 @@ int construct_dom0(struct domain *d,
l3start = l3tab = __va(mpt_alloc); mpt_alloc += PAGE_SIZE;
clear_page(l3tab);
if ( count == 0 )
- l3tab += l3_table_offset(dsi.v_start);
+ l3tab += l3_table_offset(v_start);
*l4tab = l4e_from_paddr(__pa(l3start), L4_PROT);
l4tab++;
}
@@ -832,30 +787,20 @@ int construct_dom0(struct domain *d,
write_ptbase(v);
/* Copy the OS image and free temporary buffer. */
-#ifdef CONFIG_COMPAT
- if ( IS_COMPAT(d) )
- {
- (void)loadelf32image(&dsi);
- value - xen_elf32note_numeric(&dsi,
XEN_ELFNOTE_HYPERCALL_PAGE, &value_defined);
- }
- else
-#endif
- {
- (void)loadelfimage(&dsi);
- value - xen_elfnote_numeric(&dsi,
XEN_ELFNOTE_HYPERCALL_PAGE, &value_defined);
- }
- if ( value_defined )
+ elf.dest = (void*)vkern_start;
+ elf_load_binary(&elf);
+
+ if ( UNSET_ADDR != parms.virt_hypercall )
{
- if ( (value < dsi.v_start) || (value >= v_end) )
+ if ( (parms.virt_hypercall < v_start) ||
+ (parms.virt_hypercall >= v_end) )
{
write_ptbase(current);
local_irq_enable();
printk("Invalid HYPERCALL_PAGE field in ELF notes.\n");
return -1;
}
- hypercall_page_initialise(d, (void *)(unsigned long)value);
+ hypercall_page_initialise(d, (void *)(unsigned
long)parms.virt_hypercall);
}
/* Copy the initial ramdisk. */
@@ -878,14 +823,15 @@ int construct_dom0(struct domain *d,
si->mfn_list = vphysmap_start;
sprintf(si->magic, "xen-%i.%i-x86_%d%s",
xen_major_version(), xen_minor_version(),
- !IS_COMPAT(d) ? BITS_PER_LONG : 32, xen_pae ? "p" :
"");
+ elf_64bit(&elf) ? 64 : 32,
+ parms.pae ? "p" : "");
/* Write the phys->machine and machine->phys table entries. */
for ( pfn = 0; pfn < d->tot_pages; pfn++ )
{
mfn = pfn + alloc_spfn;
#ifndef NDEBUG
-#define REVERSE_START ((v_end - dsi.v_start) >> PAGE_SHIFT)
+#define REVERSE_START ((v_end - v_start) >> PAGE_SHIFT)
if ( pfn > REVERSE_START )
mfn = alloc_epfn - (pfn - REVERSE_START);
#endif
@@ -966,7 +912,7 @@ int construct_dom0(struct domain *d,
: FLAT_COMPAT_KERNEL_DS;
regs->ss = !IS_COMPAT(d) ? FLAT_KERNEL_SS : FLAT_COMPAT_KERNEL_SS;
regs->cs = !IS_COMPAT(d) ? FLAT_KERNEL_CS : FLAT_COMPAT_KERNEL_CS;
- regs->eip = dsi.v_kernentry;
+ regs->eip = parms.virt_entry;
regs->esp = vstack_end;
regs->esi = vstartinfo_start;
regs->eflags = X86_EFLAGS_IF;
@@ -1037,41 +983,6 @@ int construct_dom0(struct domain *d,
return 0;
}
-int elf_sanity_check(const Elf_Ehdr *ehdr)
-{
- if ( !IS_ELF(*ehdr) ||
-#if defined(__i386__)
- (ehdr->e_ident[EI_CLASS] != ELFCLASS32) ||
- (ehdr->e_machine != EM_386) ||
-#elif defined(__x86_64__)
- (ehdr->e_ident[EI_CLASS] != ELFCLASS64) ||
- (ehdr->e_machine != EM_X86_64) ||
-#endif
- (ehdr->e_ident[EI_DATA] != ELFDATA2LSB) ||
- (ehdr->e_type != ET_EXEC) )
- {
- return 0;
- }
-
- return 1;
-}
-
-#ifdef CONFIG_COMPAT
-int elf32_sanity_check(const Elf32_Ehdr *ehdr)
-{
- if ( !IS_ELF(*ehdr) ||
- (ehdr->e_ident[EI_CLASS] != ELFCLASS32) ||
- (ehdr->e_machine != EM_386) ||
- (ehdr->e_ident[EI_DATA] != ELFDATA2LSB) ||
- (ehdr->e_type != ET_EXEC) )
- {
- return 0;
- }
-
- return 1;
-}
-#endif
-
/*
* Local variables:
* mode: C
Index: build-ia64-unstable-13282/xen/arch/ia64/xen/domain.c
==================================================================---
build-ia64-unstable-13282.orig/xen/arch/ia64/xen/domain.c
+++ build-ia64-unstable-13282/xen/arch/ia64/xen/domain.c
@@ -31,7 +31,7 @@
#include <xen/event.h>
#include <xen/console.h>
#include <xen/version.h>
-#include <xen/elf.h>
+#include <public/libelf.h>
#include <asm/pgalloc.h>
#include <asm/offsets.h> /* for IA64_THREAD_INFO_SIZE */
#include <asm/vcpu.h> /* for function declarations */
@@ -866,38 +866,23 @@ int shadow_mode_control(struct domain *d
#define privify_memory(x,y) do {} while(0)
#endif
-// see arch/x86/xxx/domain_build.c
-int elf_sanity_check(const Elf_Ehdr *ehdr)
-{
- if (!(IS_ELF(*ehdr)))
- {
- printk("DOM0 image is not a Xen-compatible Elf image.\n");
- return 0;
- }
- return 1;
-}
-
-static void loaddomainelfimage(struct domain *d, unsigned long image_start)
+static void loaddomainelfimage(struct domain *d, struct elf_binary *elf)
{
- char *elfbase = (char *) image_start;
- Elf_Ehdr ehdr;
- Elf_Phdr phdr;
- int h, filesz, memsz;
+ const elf_phdr *phdr;
+ int phnum, h, filesz, memsz;
unsigned long elfaddr, dom_mpaddr, dom_imva;
struct page_info *p;
-
- memcpy(&ehdr, (void *) image_start, sizeof(Elf_Ehdr));
- for ( h = 0; h < ehdr.e_phnum; h++ ) {
- memcpy(&phdr,
- elfbase + ehdr.e_phoff + (h*ehdr.e_phentsize),
- sizeof(Elf_Phdr));
- if ((phdr.p_type != PT_LOAD))
+
+ phnum = elf_uval(elf, elf->ehdr, e_phnum);
+ for (h = 0; h < phnum; h++) {
+ phdr = elf_phdr_by_index(elf, h);
+ if (!elf_phdr_is_loadable(elf, phdr))
continue;
- filesz = phdr.p_filesz;
- memsz = phdr.p_memsz;
- elfaddr = (unsigned long) elfbase + phdr.p_offset;
- dom_mpaddr = phdr.p_paddr;
+ filesz = elf_uval(elf, phdr, p_filesz);
+ memsz = elf_uval(elf, phdr, p_memsz);
+ elfaddr = (unsigned long) elf->image + elf_uval(elf, phdr, p_offset);
+ dom_mpaddr = elf_uval(elf, phdr, p_paddr);
while (memsz > 0) {
p = assign_new_domain_page(d,dom_mpaddr);
@@ -917,7 +902,7 @@ static void loaddomainelfimage(struct do
PAGE_SIZE-filesz);
}
//FIXME: This test for code seems to find a lot more than objdump -x does
- if (phdr.p_flags & PF_X) {
+ if (elf_uval(elf, phdr, p_flags) & PF_X) {
privify_memory(dom_imva,PAGE_SIZE);
flush_icache_range(dom_imva,
dom_imva+PAGE_SIZE);
@@ -980,7 +965,8 @@ int construct_dom0(struct domain *d,
struct vcpu *v = d->vcpu[0];
unsigned long max_pages;
- struct domain_setup_info dsi;
+ struct elf_binary elf;
+ struct elf_dom_parms parms;
unsigned long p_start;
unsigned long pkern_start;
unsigned long pkern_entry;
@@ -1004,18 +990,31 @@ int construct_dom0(struct domain *d,
BUG_ON(d->vcpu[0] == NULL);
BUG_ON(test_bit(_VCPUF_initialised, &v->vcpu_flags));
- memset(&dsi, 0, sizeof(struct domain_setup_info));
-
printk("*** LOADING DOMAIN 0 ***\n");
max_pages = dom0_size / PAGE_SIZE;
d->max_pages = max_pages;
d->tot_pages = 0;
- dsi.image_addr = (unsigned long)image_start;
- dsi.image_len = image_len;
- rc = parseelfimage(&dsi);
+
+ rc = elf_init(&elf, (void*)image_start, image_len);
if ( rc != 0 )
return rc;
+#ifdef VERBOSE
+ elf_set_verbose(&elf);
+#endif
+ elf_parse_binary(&elf);
+ if (0 != (elf_xen_parse(&elf, &parms)))
+ return rc;
+
+ printk(" Dom0 kernel: %s, %s, paddr 0x%" PRIx64 " ->
0x%" PRIx64 "\n",
+ elf_64bit(&elf) ? "64-bit" : "32-bit",
+ elf_msb(&elf) ? "msb" : "lsb",
+ elf.pstart, elf.pend);
+ if (!elf_64bit(&elf) ||
+ elf_uval(&elf, elf.ehdr, e_machine) != EM_IA_64) {
+ printk("Incompatible kernel binary\n");
+ return -1;
+ }
#ifdef VALIDATE_VT
/* Temp workaround */
@@ -1034,10 +1033,10 @@ int construct_dom0(struct domain *d,
}
#endif
- p_start = dsi.v_start;
- pkern_start = dsi.v_kernstart;
- pkern_end = dsi.v_kernend;
- pkern_entry = dsi.v_kernentry;
+ p_start = parms.virt_base;
+ pkern_start = parms.virt_kstart;
+ pkern_end = parms.virt_kend;
+ pkern_entry = parms.virt_entry;
//printk("p_start=%lx, pkern_start=%lx, pkern_end=%lx,
pkern_entry=%lx\n",p_start,pkern_start,pkern_end,pkern_entry);
@@ -1107,7 +1106,7 @@ int construct_dom0(struct domain *d,
printk ("Cannot allocate dom0 vcpu %d\n", i);
/* Copy the OS image. */
- loaddomainelfimage(d,image_start);
+ loaddomainelfimage(d,&elf);
/* Copy the initial ramdisk. */
//if ( initrd_len != 0 )
--
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
This patch makes libelf available to the tools, by symlinking the source files and compiling them into libxc. Signed-off-by: Gerd Hoffmann <kraxel@suse.de> --- tools/libxc/Makefile | 15 +++++++++++++++ 1 file changed, 15 insertions(+) Index: build-32-unstable-13553/tools/libxc/Makefile ==================================================================--- build-32-unstable-13553.orig/tools/libxc/Makefile +++ build-32-unstable-13553/tools/libxc/Makefile @@ -30,6 +30,21 @@ GUEST_SRCS-$(CONFIG_IA64) += xc_linux_bu GUEST_SRCS-$(CONFIG_MIGRATE) += xc_linux_restore.c xc_linux_save.c GUEST_SRCS-$(CONFIG_HVM) += xc_hvm_build.c xc_hvm_restore.c xc_hvm_save.c +# symlink libelf from xen/common/libelf/ +LIBELF_SRCS := libelf-tools.c libelf-loader.c +LIBELF_SRCS += libelf-dominfo.c libelf-relocate.c + +libelf-tools.o: libelf-tools.c libelf-private.h +libelf-loader.o: libelf-loader.c libelf-private.h +libelf-dominfo.o: libelf-dominfo.c libelf-private.h +libelf-relocate.o: libelf-relocate.c libelf-private.h + +$(LIBELF_SRCS) libelf-private.h: + ln -s ../../xen/common/libelf/$@ $@ + +# add libelf bits to libxc +GUEST_SRCS-y += $(LIBELF_SRCS) + -include $(XEN_TARGET_ARCH)/Makefile CFLAGS += -Werror -Wmissing-prototypes -- _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
This patch switches over the hvm domain builder to libelf
(for loading hvmloader).
Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
---
tools/libxc/xc_hvm_build.c | 220 +++++++++++++--------------------------------
1 file changed, 65 insertions(+), 155 deletions(-)
Index: build-32-unstable-12802/tools/libxc/xc_hvm_build.c
==================================================================---
build-32-unstable-12802.orig/tools/libxc/xc_hvm_build.c
+++ build-32-unstable-12802/tools/libxc/xc_hvm_build.c
@@ -2,29 +2,22 @@
* xc_hvm_build.c
*/
-#define ELFSIZE 32
#include <stddef.h>
#include <inttypes.h>
-#include "xg_private.h"
-#include "xc_private.h"
-#include "xc_elf.h"
#include <stdlib.h>
#include <unistd.h>
#include <zlib.h>
+
+#include "xg_private.h"
+#include "xc_private.h"
+
#include <xen/hvm/hvm_info_table.h>
#include <xen/hvm/params.h>
#include <xen/hvm/e820.h>
-#define SCRATCH_PFN 0xFFFFF
+#include <xen/libelf.h>
-#define HVM_LOADER_ENTR_ADDR 0x00100000
-static int
-parseelfimage(
- char *elfbase, unsigned long elfsize, struct domain_setup_info *dsi);
-static int
-loadelfimage(
- char *elfbase, int xch, uint32_t dom, unsigned long *parray,
- struct domain_setup_info *dsi);
+#define SCRATCH_PFN 0xFFFFF
int xc_set_hvm_param(
int handle, domid_t dom, int param, unsigned long value)
@@ -144,6 +137,48 @@ static void build_e820map(void *e820_pag
*(((unsigned char *)e820_page) + E820_MAP_NR_OFFSET) = nr_map;
}
+static int
+loadelfimage(struct elf_binary *elf, int xch, uint32_t dom, unsigned long
*parray)
+{
+ privcmd_mmap_entry_t *entries = NULL;
+ int pages = (elf->pend - elf->pstart + PAGE_SIZE - 1) >>
PAGE_SHIFT;
+ int i, rc = -1;
+
+ /* map hvmloader address space */
+ entries = malloc(pages * sizeof(privcmd_mmap_entry_t));
+ if (NULL == entries)
+ goto err;
+ elf->dest = mmap(NULL, pages << PAGE_SHIFT, PROT_READ |
PROT_WRITE,
+ MAP_SHARED, xch, 0);
+ if (MAP_FAILED == elf->dest)
+ goto err;
+
+ for (i = 0; i < pages; i++)
+ {
+ entries[i].va = (uintptr_t)elf->dest + (i << PAGE_SHIFT);
+ entries[i].mfn = parray[(elf->pstart >> PAGE_SHIFT) + i];
+ entries[i].npages = 1;
+ }
+ rc = xc_map_foreign_ranges(xch, dom, entries, pages);
+ if (rc < 0)
+ goto err;
+
+ /* load hvmloader */
+ elf_load_binary(elf);
+ rc = 0;
+
+ err:
+ /* cleanup */
+ if (elf->dest) {
+ munmap(elf->dest, pages << PAGE_SHIFT);
+ elf->dest = NULL;
+ }
+ if (entries)
+ free(entries);
+
+ return rc;
+}
+
static int setup_guest(int xc_handle,
uint32_t dom, int memsize,
char *image, unsigned long image_size,
@@ -155,35 +190,35 @@ static int setup_guest(int xc_handle,
struct xen_add_to_physmap xatp;
struct shared_info *shared_info;
void *e820_page;
- struct domain_setup_info dsi;
- uint64_t v_end;
+ struct elf_binary elf;
+ uint64_t v_start, v_end;
int rc;
- memset(&dsi, 0, sizeof(struct domain_setup_info));
-
- if ( (parseelfimage(image, image_size, &dsi)) != 0 )
+ if (0 != elf_init(&elf, image, image_size))
goto error_out;
+ elf_parse_binary(&elf);
+ v_start = 0;
+ v_end = (unsigned long long)memsize << 20;
- if ( (dsi.v_kernstart & (PAGE_SIZE - 1)) != 0 )
+ if ( (elf.pstart & (PAGE_SIZE - 1)) != 0 )
{
PERROR("Guest OS must load to a page boundary.\n");
goto error_out;
}
- v_end = (unsigned long long)memsize << 20;
-
IPRINTF("VIRTUAL MEMORY ARRANGEMENT:\n"
- " Loaded HVM loader:
%016"PRIx64"->%016"PRIx64"\n"
- " TOTAL:
%016"PRIx64"->%016"PRIx64"\n",
- dsi.v_kernstart, dsi.v_kernend,
- dsi.v_start, v_end);
- IPRINTF(" ENTRY ADDRESS: %016"PRIx64"\n",
dsi.v_kernentry);
+ " Loaded HVM loader:
%016"PRIx64"->%016"PRIx64"\n"
+ " TOTAL:
%016"PRIx64"->%016"PRIx64"\n"
+ " ENTRY ADDRESS: %016"PRIx64"\n",
+ elf.pstart, elf.pend,
+ v_start, v_end,
+ elf_uval(&elf, elf.ehdr, e_entry));
- if ( (v_end - dsi.v_start) > ((unsigned long long)nr_pages <<
PAGE_SHIFT) )
+ if ( (v_end - v_start) > ((unsigned long long)nr_pages <<
PAGE_SHIFT) )
{
PERROR("Initial guest OS requires too much space: "
"(%lluMB is greater than %lluMB limit)\n",
- (unsigned long long)(v_end - dsi.v_start) >> 20,
+ (unsigned long long)(v_end - v_start) >> 20,
((unsigned long long)nr_pages << PAGE_SHIFT) >> 20);
goto error_out;
}
@@ -212,7 +247,7 @@ static int setup_guest(int xc_handle,
goto error_out;
}
- loadelfimage(image, xc_handle, dom, page_array, &dsi);
+ loadelfimage(&elf, xc_handle, dom, page_array);
if ( (e820_page = xc_map_foreign_range(
xc_handle, dom, PAGE_SIZE, PROT_READ | PROT_WRITE,
@@ -256,7 +291,7 @@ static int setup_guest(int xc_handle,
free(page_array);
- ctxt->user_regs.eip = dsi.v_kernentry;
+ ctxt->user_regs.eip = elf_uval(&elf, elf.ehdr, e_entry);
return 0;
@@ -315,131 +350,6 @@ static inline int is_loadable_phdr(Elf32
((phdr->p_flags & (PF_W|PF_X)) != 0));
}
-static int parseelfimage(char *elfbase,
- unsigned long elfsize,
- struct domain_setup_info *dsi)
-{
- Elf32_Ehdr *ehdr = (Elf32_Ehdr *)elfbase;
- Elf32_Phdr *phdr;
- Elf32_Shdr *shdr;
- unsigned long kernstart = ~0UL, kernend=0UL;
- char *shstrtab;
- int h;
-
- if ( !IS_ELF(*ehdr) )
- {
- xc_set_error(XC_INVALID_KERNEL,
- "Kernel image does not have an ELF header.");
- return -EINVAL;
- }
-
- if ( (ehdr->e_phoff + (ehdr->e_phnum * ehdr->e_phentsize)) >
elfsize )
- {
- xc_set_error(XC_INVALID_KERNEL,
- "ELF program headers extend beyond end of
image.");
- return -EINVAL;
- }
-
- if ( (ehdr->e_shoff + (ehdr->e_shnum * ehdr->e_shentsize)) >
elfsize )
- {
- xc_set_error(XC_INVALID_KERNEL,
- "ELF section headers extend beyond end of
image.");
- return -EINVAL;
- }
-
- /* Find the section-header strings table. */
- if ( ehdr->e_shstrndx == SHN_UNDEF )
- {
- xc_set_error(XC_INVALID_KERNEL,
- "ELF image has no section-header strings table
(shstrtab).");
- return -EINVAL;
- }
- shdr = (Elf32_Shdr *)(elfbase + ehdr->e_shoff +
- (ehdr->e_shstrndx*ehdr->e_shentsize));
- shstrtab = elfbase + shdr->sh_offset;
-
- for ( h = 0; h < ehdr->e_phnum; h++ )
- {
- phdr = (Elf32_Phdr *)(elfbase + ehdr->e_phoff +
(h*ehdr->e_phentsize));
- if ( !is_loadable_phdr(phdr) )
- continue;
- if ( phdr->p_paddr < kernstart )
- kernstart = phdr->p_paddr;
- if ( (phdr->p_paddr + phdr->p_memsz) > kernend )
- kernend = phdr->p_paddr + phdr->p_memsz;
- }
-
- if ( (kernstart > kernend) ||
- (ehdr->e_entry < kernstart) ||
- (ehdr->e_entry > kernend) )
- {
- xc_set_error(XC_INVALID_KERNEL,
- "Malformed ELF image.");
- return -EINVAL;
- }
-
- dsi->v_start = 0x00000000;
-
- dsi->v_kernstart = kernstart;
- dsi->v_kernend = kernend;
- dsi->v_kernentry = HVM_LOADER_ENTR_ADDR;
-
- dsi->v_end = dsi->v_kernend;
-
- return 0;
-}
-
-static int
-loadelfimage(
- char *elfbase, int xch, uint32_t dom, unsigned long *parray,
- struct domain_setup_info *dsi)
-{
- Elf32_Ehdr *ehdr = (Elf32_Ehdr *)elfbase;
- Elf32_Phdr *phdr;
- int h;
-
- char *va;
- unsigned long pa, done, chunksz;
-
- for ( h = 0; h < ehdr->e_phnum; h++ )
- {
- phdr = (Elf32_Phdr *)(elfbase + ehdr->e_phoff +
(h*ehdr->e_phentsize));
- if ( !is_loadable_phdr(phdr) )
- continue;
-
- for ( done = 0; done < phdr->p_filesz; done += chunksz )
- {
- pa = (phdr->p_paddr + done) - dsi->v_start;
- if ((va = xc_map_foreign_range(
- xch, dom, PAGE_SIZE, PROT_WRITE,
- parray[pa >> PAGE_SHIFT])) == 0)
- return -1;
- chunksz = phdr->p_filesz - done;
- if ( chunksz > (PAGE_SIZE - (pa & (PAGE_SIZE-1))) )
- chunksz = PAGE_SIZE - (pa & (PAGE_SIZE-1));
- memcpy(va + (pa & (PAGE_SIZE-1)),
- elfbase + phdr->p_offset + done, chunksz);
- munmap(va, PAGE_SIZE);
- }
-
- for ( ; done < phdr->p_memsz; done += chunksz )
- {
- pa = (phdr->p_paddr + done) - dsi->v_start;
- if ((va = xc_map_foreign_range(
- xch, dom, PAGE_SIZE, PROT_WRITE,
- parray[pa >> PAGE_SHIFT])) == 0)
- return -1;
- chunksz = phdr->p_memsz - done;
- if ( chunksz > (PAGE_SIZE - (pa & (PAGE_SIZE-1))) )
- chunksz = PAGE_SIZE - (pa & (PAGE_SIZE-1));
- memset(va + (pa & (PAGE_SIZE-1)), 0, chunksz);
- munmap(va, PAGE_SIZE);
- }
- }
-
- return 0;
-}
-
/* xc_hvm_build
*
* Create a domain for a virtualized Linux, using files/filenames
--
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
Gerd Hoffmann
2007-Jan-23 14:53 UTC
[Xen-devel] [patch 5/5] libelf: use for readnotes utility.
This patch makes the readnotes utility use libelf.
Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
---
tools/xcutils/readnotes.c | 277 +++++++---------------------------------------
1 file changed, 45 insertions(+), 232 deletions(-)
Index: build-32-unstable-13534/tools/xcutils/readnotes.c
==================================================================---
build-32-unstable-13534.orig/tools/xcutils/readnotes.c
+++ build-32-unstable-13534/tools/xcutils/readnotes.c
@@ -1,4 +1,3 @@
-#include <elf.h>
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
@@ -11,219 +10,35 @@
#include <sys/stat.h>
#include <sys/mman.h>
-#include <xen/elfnote.h>
-
-#define ELFNOTE_NAME(_n_) ((char*)(_n_) + sizeof(*(_n_)))
-#define ELFNOTE_DESC(_n_) (ELFNOTE_NAME(_n_) + (((_n_)->n_namesz+3)&~3))
-#define ELFNOTE_NEXT(_n_) (ELFNOTE_DESC(_n_) + (((_n_)->n_descsz+3)&~3))
-
-#ifndef ELFSIZE
-#include <limits.h>
-#if UINT_MAX == ULONG_MAX
-#define ELFSIZE 32
-#else
-#define ELFSIZE 64
-#endif
-#endif
-
-#if (ELFSIZE == 32)
-typedef Elf32_Nhdr Elf_Nhdr;
-typedef Elf32_Half Elf_Half;
-typedef Elf32_Word Elf_Word;
-#elif (ELFSIZE == 64)
-typedef Elf64_Nhdr Elf_Nhdr;
-typedef Elf64_Half Elf_Half;
-typedef Elf64_Word Elf_Word;
-#else
-#error "Unknown ELFSIZE"
-#endif
-
-static void print_string_note(const char *prefix, Elf_Nhdr *note)
-{
- printf("%s: %s\n", prefix, (const char *)ELFNOTE_DESC(note));
-}
-
-static void print_numeric_note(const char *prefix,Elf_Nhdr *note)
-{
- switch (note->n_descsz)
- {
- case 4:
- printf("%s: %#010" PRIx32 " (4 bytes)\n",
- prefix, *(uint32_t *)ELFNOTE_DESC(note));
- break;
- case 8:
- printf("%s: %#018" PRIx64 " (8 bytes)\n",
- prefix, *(uint64_t *)ELFNOTE_DESC(note));
- break;
- default:
- printf("%s: unknown data size %#lx\n", prefix,
- (unsigned long)note->n_descsz);
- break;
- }
-}
-
-static inline int is_elf(void *image)
-{
- /*
- * Since we are only accessing the e_ident field we can
- * acccess the bytes directly without needing to figure out
- * which version of Elf*_Ehdr structure to use.
- */
- const unsigned char *hdr = image;
- return ( hdr[EI_MAG0] == ELFMAG0 &&
- hdr[EI_MAG1] == ELFMAG1 &&
- hdr[EI_MAG2] == ELFMAG2 &&
- hdr[EI_MAG3] == ELFMAG3 );
-}
-
-static inline unsigned char ehdr_class(void *image)
-{
- /*
- * Since we are only accessing the e_ident field we can
- * acccess the bytes directly without needing to figure out
- * which version of Elf*_Ehdr structure to use.
- */
- const unsigned char *hdr = image;
- switch (hdr[EI_CLASS])
- {
- case ELFCLASS32:
- case ELFCLASS64:
- return hdr[EI_CLASS];
- default:
- fprintf(stderr, "Unknown ELF class %d\n", hdr[EI_CLASS]);
- exit(1);
- }
-}
+#include <xg_private.h>
-static inline Elf_Half ehdr_shnum(void *image)
-{
- switch (ehdr_class(image))
- {
- case ELFCLASS32:
- return ((Elf32_Ehdr *)image)->e_shnum;
- case ELFCLASS64:
- return ((Elf64_Ehdr *)image)->e_shnum;
- default:
- exit(1);
- }
-}
+#include <xen/libelf.h>
-static inline Elf_Word shdr_type(void *image, int shnum)
+static void print_string_note(const char *prefix, struct elf_binary *elf,
+ const elf_note *note)
{
- switch (ehdr_class(image))
- {
- case ELFCLASS32:
- {
- Elf32_Ehdr *ehdr = (Elf32_Ehdr *)image;
- Elf32_Shdr *shdr = (Elf32_Shdr*)(image + ehdr->e_shoff +
- (shnum*ehdr->e_shentsize));
- return shdr->sh_type;
- }
- case ELFCLASS64:
- {
- Elf64_Ehdr *ehdr = (Elf64_Ehdr *)image;
- Elf64_Shdr *shdr = (Elf64_Shdr*)(image + ehdr->e_shoff +
- (shnum*ehdr->e_shentsize));
- return shdr->sh_type;
- }
- default:
- exit(1);
- }
+ printf("%s: %s\n", prefix, (char*)elf_note_desc(elf, note));
}
-static inline const char *shdr_name(void *image, int shnum)
-{
- const char *shstrtab;
-
- switch (ehdr_class(image))
- {
- case ELFCLASS32:
- {
- Elf32_Ehdr *ehdr = (Elf32_Ehdr *)image;
- Elf32_Shdr *shdr;
- /* Find the section-header strings table. */
- if ( ehdr->e_shstrndx == SHN_UNDEF )
- return NULL;
- shdr = (Elf32_Shdr *)(image + ehdr->e_shoff +
- (ehdr->e_shstrndx*ehdr->e_shentsize));
- shstrtab = image + shdr->sh_offset;
-
- shdr= (Elf32_Shdr*)(image + ehdr->e_shoff +
- (shnum*ehdr->e_shentsize));
- return &shstrtab[shdr->sh_name];
- }
- case ELFCLASS64:
- {
- Elf64_Ehdr *ehdr = (Elf64_Ehdr *)image;
- Elf64_Shdr *shdr;
- /* Find the section-header strings table. */
- if ( ehdr->e_shstrndx == SHN_UNDEF )
- return NULL;
- shdr = (Elf64_Shdr *)(image + ehdr->e_shoff +
- (ehdr->e_shstrndx*ehdr->e_shentsize));
- shstrtab = image + shdr->sh_offset;
-
- shdr= (Elf64_Shdr*)(image + ehdr->e_shoff +
- (shnum*ehdr->e_shentsize));
- return &shstrtab[shdr->sh_name];
- }
- default:
- exit(1);
- }
-}
-static inline void *shdr_start(void *image, int shnum)
+static void print_numeric_note(const char *prefix, struct elf_binary *elf,
+ const elf_note *note)
{
- switch (ehdr_class(image))
- {
- case ELFCLASS32:
- {
- Elf32_Ehdr *ehdr = (Elf32_Ehdr *)image;
- Elf32_Shdr *shdr = (Elf32_Shdr*)(image + ehdr->e_shoff +
- (shnum*ehdr->e_shentsize));
- return image + shdr->sh_offset;
- }
- case ELFCLASS64:
- {
- Elf64_Ehdr *ehdr = (Elf64_Ehdr *)image;
- Elf64_Shdr *shdr = (Elf64_Shdr*)(image + ehdr->e_shoff +
- (shnum*ehdr->e_shentsize));
- return image + shdr->sh_offset;
- }
- default:
- exit(1);
- }
-}
+ uint64_t value = elf_note_numeric(elf, note);
+ int descsz = elf_uval(elf, note, descsz);
-static inline void *shdr_end(void *image, int shnum)
-{
- switch (ehdr_class(image))
- {
- case ELFCLASS32:
- {
- Elf32_Ehdr *ehdr = (Elf32_Ehdr *)image;
- Elf32_Shdr *shdr = (Elf32_Shdr*)(image + ehdr->e_shoff +
- (shnum*ehdr->e_shentsize));
- return image + shdr->sh_offset + shdr->sh_size;
- }
- case ELFCLASS64:
- {
- Elf64_Ehdr *ehdr = (Elf64_Ehdr *)image;
- Elf64_Shdr *shdr = (Elf64_Shdr*)(image + ehdr->e_shoff +
- (shnum*ehdr->e_shentsize));
- return image + shdr->sh_offset + shdr->sh_size;
- }
- default:
- exit(1);
- }
+ printf("%s: %#*" PRIx64 " (%d bytes)\n",
+ prefix, 2+2*descsz, value, descsz);
}
int main(int argc, char **argv)
{
const char *f;
- int fd,h;
+ int fd,h,size,count;
void *image;
struct stat st;
- Elf_Nhdr *note;
+ struct elf_binary elf;
+ const elf_shdr *shdr;
+ const elf_note *note, *end;
if (argc != 2)
{
@@ -251,76 +66,74 @@ int main(int argc, char **argv)
fprintf(stderr, "Unable to map %s: %s\n", f, strerror(errno));
return 1;
}
+ size = st.st_size;
- if ( !is_elf(image) )
+ if (0 != elf_init(&elf, image, size))
{
fprintf(stderr, "File %s is not an ELF image\n", f);
return 1;
}
+ elf_set_logfile(&elf, stderr, 0);
- for ( h=0; h < ehdr_shnum(image); h++)
+ count = elf_shdr_count(&elf);
+ for ( h=0; h < count; h++)
{
- if (shdr_type(image,h) != SHT_NOTE)
+ shdr = elf_shdr_by_index(&elf, h);
+ if (elf_uval(&elf, shdr, sh_type) != SHT_NOTE)
continue;
- for (note = (Elf_Nhdr*)shdr_start(image,h);
- note < (Elf_Nhdr*)shdr_end(image,h);
- note = (Elf_Nhdr*)(ELFNOTE_NEXT(note)))
+ end = elf_section_end(&elf, shdr);
+ for (note = elf_section_start(&elf, shdr);
+ note < end;
+ note = elf_note_next(&elf, note))
{
- switch(note->n_type)
+ if (0 != strcmp(elf_note_name(&elf, note), "Xen"))
+ continue;
+ switch(elf_uval(&elf, note, type))
{
case XEN_ELFNOTE_INFO:
- print_string_note("INFO", note);
+ print_string_note("INFO", &elf , note);
break;
case XEN_ELFNOTE_ENTRY:
- print_numeric_note("ENTRY", note);
+ print_numeric_note("ENTRY", &elf , note);
break;
case XEN_ELFNOTE_HYPERCALL_PAGE:
- print_numeric_note("HYPERCALL_PAGE", note);
+ print_numeric_note("HYPERCALL_PAGE", &elf , note);
break;
case XEN_ELFNOTE_VIRT_BASE:
- print_numeric_note("VIRT_BASE", note);
+ print_numeric_note("VIRT_BASE", &elf , note);
break;
case XEN_ELFNOTE_PADDR_OFFSET:
- print_numeric_note("PADDR_OFFSET", note);
+ print_numeric_note("PADDR_OFFSET", &elf , note);
break;
case XEN_ELFNOTE_XEN_VERSION:
- print_string_note("XEN_VERSION", note);
+ print_string_note("XEN_VERSION", &elf , note);
break;
case XEN_ELFNOTE_GUEST_OS:
- print_string_note("GUEST_OS", note);
+ print_string_note("GUEST_OS", &elf , note);
break;
case XEN_ELFNOTE_GUEST_VERSION:
- print_string_note("GUEST_VERSION", note);
+ print_string_note("GUEST_VERSION", &elf , note);
break;
case XEN_ELFNOTE_LOADER:
- print_string_note("LOADER", note);
+ print_string_note("LOADER", &elf , note);
break;
case XEN_ELFNOTE_PAE_MODE:
- print_string_note("PAE_MODE", note);
+ print_string_note("PAE_MODE", &elf , note);
break;
case XEN_ELFNOTE_FEATURES:
- print_string_note("FEATURES", note);
+ print_string_note("FEATURES", &elf , note);
break;
default:
- printf("unknown note type %#lx\n",
- (unsigned long)note->n_type);
+ printf("unknown note type %#x\n",
+ (int)elf_uval(&elf, note, type));
break;
}
}
}
- for ( h=0; h < ehdr_shnum(image); h++)
- {
- const char *name = shdr_name(image,h);
-
- if ( name == NULL )
- continue;
- if ( strcmp(name, "__xen_guest") != 0 )
- continue;
-
- printf("__xen_guest: %s\n", (const char *)shdr_start(image, h));
- break;
- }
+ shdr = elf_shdr_by_name(&elf, "__xen_guest");
+ if (shdr)
+ printf("__xen_guest: %s\n", (char*)elf_section_start(&elf,
shdr));
return 0;
}
--
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
Christoph Egger
2007-Jan-23 15:27 UTC
Re: [Xen-devel] [patch 1/5] add libelf: an ELF binary parser library.
On Tuesday 23 January 2007 15:53, Gerd Hoffmann wrote: [...]> Signed-off-by: Gerd Hoffmann <kraxel@suse.de> > --- > tools/libxc/xc_elf.h | 525 > ----------------------------------- xen/arch/x86/boot/mkelf32.c | > 2 > xen/common/Makefile | 2 > xen/common/libelf/Makefile | 4 > xen/common/libelf/README | 1 > xen/common/libelf/libelf-dominfo.c | 420 ++++++++++++++++++++++++++++ > xen/common/libelf/libelf-loader.c | 156 ++++++++++ > xen/common/libelf/libelf-private.h | 51 +++ > xen/common/libelf/libelf-relocate.c | 345 +++++++++++++++++++++++ > xen/common/libelf/libelf-tools.c | 225 +++++++++++++++ > xen/include/public/elfstructs.h | 527[...] How about putting libelf into xen/lib/libelf ? When we also move the libc files from xen/common/ to xen/lib/libc, then we have this structure: xen/lib/libelf xen/lib/libc This is a better structured IMO. Christoph Egger _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Emmanuel Ackaouy
2007-Jan-23 19:03 UTC
[Xen-devel] Re: [patch 1/5] add libelf: an ELF binary parser library.
Hi Gerd, I have to say I''m not a big fan of sticking a 32bit and 64bit version of each structure in a union and then checking at all levels of the function call stack which one to reference (via elf_xval() for example). Wouldn''t it be cleaner to just have 2 different version of each elf data structure and function? elf32_xxx and elf64_xxx . And go down one path or the other at the start of your function call stack? I''m not usually a fan of multiple compilation, but due to the layout of 32 and 64bit elf structures, this is one case where it makes sense to me. Also, do we actually have a need to look at elf files with a different ELFDATA (byte ordering) ? On Jan 23, 2007, at 15:53, Gerd Hoffmann wrote:> This patch adds a library with a small collection of helper functions > to parse and load elf binaries. The library handles endianess and > elfsize at runtime. > > The patch also shuffles around the include files a bit. Now there is > *one* include file holding all the elf structures > (xen/include/public/elfstructs.h) which is included by everyone who > needs them. > > It''s dead code with this patch only, putting the code into use happens > in followup patches. > > Signed-off-by: Gerd Hoffmann <kraxel@suse.de> > --- > tools/libxc/xc_elf.h | 525 > ----------------------------------- > xen/arch/x86/boot/mkelf32.c | 2 > xen/common/Makefile | 2 > xen/common/libelf/Makefile | 4 > xen/common/libelf/README | 1 > xen/common/libelf/libelf-dominfo.c | 420 > ++++++++++++++++++++++++++++ > xen/common/libelf/libelf-loader.c | 156 ++++++++++ > xen/common/libelf/libelf-private.h | 51 +++ > xen/common/libelf/libelf-relocate.c | 345 +++++++++++++++++++++++ > xen/common/libelf/libelf-tools.c | 225 +++++++++++++++ > xen/include/public/elfstructs.h | 527 > ++++++++++++++++++++++++++++++++++++ > xen/include/public/libelf.h | 238 ++++++++++++++++ > xen/include/xen/elf.h | 490 > --------------------------------- > 13 files changed, 1972 insertions(+), 1014 deletions(-)_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Emmanuel Ackaouy
2007-Jan-23 19:10 UTC
[Xen-devel] Re: [patch 2/5] libelf: use for x86 dom0 builder.
See comments below: On Jan 23, 2007, at 15:53, Gerd Hoffmann wrote:> This patch switches the x86 dom0 builder over to libelf. > > Signed-off-by: Gerd Hoffmann <kraxel@suse.de> > --- > xen/arch/ia64/xen/domain.c | 79 +++++------ > xen/arch/x86/domain_build.c | 303 > +++++++++++++++----------------------------- > xen/common/Makefile | 4 > 3 files changed, 148 insertions(+), 238 deletions(-) > > Index: build-ia64-unstable-13282/xen/common/Makefile > ==================================================================> --- build-ia64-unstable-13282.orig/xen/common/Makefile > +++ build-ia64-unstable-13282/xen/common/Makefile > @@ -2,8 +2,8 @@ obj-y += acm_ops.o > obj-y += bitmap.o > obj-y += domctl.o > obj-y += domain.o > -obj-y += elf.o > -obj-$(CONFIG_COMPAT) += elf32.o > +#obj-y += elf.o > +#obj-$(CONFIG_COMPAT) += elf32.oCan we just zap those lines?> obj-y += event_channel.o > obj-y += grant_table.o > obj-y += kernel.o > Index: build-ia64-unstable-13282/xen/arch/x86/domain_build.c > ==================================================================> --- build-ia64-unstable-13282.orig/xen/arch/x86/domain_build.c > +++ build-ia64-unstable-13282/xen/arch/x86/domain_build.c > @@ -13,7 +13,6 @@ > #include <xen/delay.h> >[snip]> - > int construct_dom0(struct domain *d, > unsigned long _image_start, unsigned long > image_len, > unsigned long _initrd_start, unsigned long > initrd_len, > char *cmdline) > { > - int i, rc, dom0_pae, xen_pae, order; > + int i, rc, compatible, compat32, order, machine; > struct cpu_user_regs *regs; > unsigned long pfn, mfn; > unsigned long nr_pages; > @@ -263,9 +205,7 @@ int construct_dom0(struct domain *d, > struct page_info *page = NULL; > start_info_t *si; > struct vcpu *v = d->vcpu[0]; > - const char *p; > unsigned long long value; > - int value_defined; > #if defined(__i386__) > char *image_start = (char *)_image_start; /* use lowmem > mappings */ > char *initrd_start = (char *)_initrd_start; /* use lowmem > mappings */ > @@ -287,7 +227,10 @@ int construct_dom0(struct domain *d, > * *_start address are page-aligned, except v_start (and v_end) > which are > * superpage-aligned. > */ > - struct domain_setup_info dsi; > + struct elf_binary elf; > + struct elf_dom_parms parms; > + unsigned long vkern_start; > + unsigned long vkern_end; > unsigned long vinitrd_start; > unsigned long vinitrd_end; > unsigned long vphysmap_start; > @@ -298,6 +241,7 @@ int construct_dom0(struct domain *d, > unsigned long vstack_end; > unsigned long vpt_start; > unsigned long vpt_end; > + unsigned long v_start; > unsigned long v_end; > > /* Machine address of next candidate page-table page. */ > @@ -312,21 +256,71 @@ int construct_dom0(struct domain *d, > BUG_ON(d->vcpu[0] == NULL); > BUG_ON(test_bit(_VCPUF_initialised, &v->vcpu_flags)); > > - memset(&dsi, 0, sizeof(struct domain_setup_info)); > - dsi.image_addr = (unsigned long)image_start; > - dsi.image_len = image_len; > - > printk("*** LOADING DOMAIN 0 ***\n"); > > d->max_pages = ~0U; > > nr_pages = compute_dom0_nr_pages(); > > - rc = parseelfimage(&dsi); > + if (0 != (rc = elf_init(&elf, image_start, image_len))) > + return rc; > +#ifdef VERBOSE > + elf_set_verbose(&elf); > +#endif > + elf_parse_binary(&elf); > + if (0 != (elf_xen_parse(&elf, &parms))) > + return rc; > + > + /* compatibility check */ > + compatible = 0; > + compat32 = 0; > + machine = elf_uval(&elf, elf.ehdr, e_machine); > + switch (CONFIG_PAGING_LEVELS) {Can we make this a compile time check instead of run-time? Also, it would seem easier to do all the checks first and then do a printk specifying which kernel we found and, if it''s not compatible with the hypervisor, why not.> + case 2: /* x86_32 */ > + if (parms.pae == PAEKERN_bimodal) > + parms.pae = PAEKERN_no; > + printk(" Xen kernel: 32-bit, lsb\n"); > + if (elf_32bit(&elf) && !parms.pae && machine == EM_386) > + compatible = 1; > + break; > + case 3: /* x86_32p */ > + if (parms.pae == PAEKERN_bimodal) > + parms.pae = PAEKERN_extended_cr3; > + printk(" Xen kernel: 32-bit, PAE, lsb\n"); > + if (elf_32bit(&elf) && parms.pae && machine == EM_386) > + compatible = 1; > + break; > + case 4: /* x86_64 */ > +#ifndef CONFIG_COMPAT > + printk(" Xen kernel: 64-bit, lsb\n"); > +#else > + printk(" Xen kernel: 64-bit, lsb, compat32\n"); > + if (elf_32bit(&elf) && parms.pae == PAEKERN_bimodal) > + parms.pae = PAEKERN_extended_cr3; > + if (elf_32bit(&elf) && parms.pae && machine == EM_386) > + { > + compat32 = 1; > + compatible = 1; > + } > +#endif > + if (elf_64bit(&elf) && machine == EM_X86_64) > + compatible = 1; > + break; > + } > + printk(" Dom0 kernel: %s%s, %s, paddr 0x%" PRIx64 " -> 0x%" > PRIx64 "\n", > + elf_64bit(&elf) ? "64-bit" : "32-bit", > + parms.pae ? ", PAE" : "", > + elf_msb(&elf) ? "msb" : "lsb", > + elf.pstart, elf.pend); > + > + if ( !compatible ) > + { > + printk("Mismatch between Xen and DOM0 kernel\n"); > + return -EINVAL; > + } > + > #ifdef CONFIG_COMPAT > - if ( rc == -ENOSYS > - && !compat_disabled > - && (rc = parseelf32image(&dsi)) == 0 ) > + if (compat32) > { > l1_pgentry_t gdt_l1e; > > @@ -348,42 +342,10 @@ int construct_dom0(struct domain *d, > local_flush_tlb_one(GDT_LDT_VIRT_START + > FIRST_RESERVED_GDT_BYTE); > } > #endif > - if ( rc != 0) > - { > - if ( rc == -ENOSYS ) > - printk("DOM0 image is not a Xen-compatible Elf image.\n"); > - return rc; > - }[snip] _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Gerd Hoffmann
2007-Jan-24 08:34 UTC
[Xen-devel] Re: [patch 1/5] add libelf: an ELF binary parser library.
Emmanuel Ackaouy wrote:> Hi Gerd, > > I have to say I''m not a big fan of sticking a 32bit and 64bit version > of each structure in a union and then checking at all levels of the > function call stack which one to reference (via elf_xval() for example). > > Wouldn''t it be cleaner to just have 2 different version of each elf > data structure and function? elf32_xxx and elf64_xxx . And go down > one path or the other at the start of your function call stack?No.> I''m not > usually a fan of multiple compilation, but due to the layout of 32 > and 64bit elf structures, this is one case where it makes sense > to me.It doesn''t. I did it both ways. Not compiling twice is better. It is much more flexible and makes reusing the code much easier. You can simply add your own functions without hassle. Look at the libelf-use-readnotes.diff patch and the print_numeric_note() function it adds to readnotes.c as an simple example. How do you do that when compiling twice? Your options are: (1) push that into the library which is compiled twice anyway. (2) split it out into a separate source which you can compile twice. (3) write two versions of the function, one for 32 and one for 64 bit. None of these options looks good to me.> Also, do we actually have a need to look at elf files with a different > ELFDATA (byte ordering) ?Yes. I think it is very handy if readnotes works on ppc kernels too. Also some IA64 guys seem to work on mixed-endian support (there where some messages on the list some weeks ago), for this it is required too. cheers, Gerd -- Gerd Hoffmann <kraxel@suse.de> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Gerd Hoffmann
2007-Jan-24 08:41 UTC
[Xen-devel] Re: [patch 2/5] libelf: use for x86 dom0 builder.
Hi,>> -obj-y += elf.o >> -obj-$(CONFIG_COMPAT) += elf32.o >> +#obj-y += elf.o >> +#obj-$(CONFIG_COMPAT) += elf32.o > > Can we just zap those lines?Once ia64 is tested and ppc dom0 builder is ported over to libelf we can.>> + /* compatibility check */ >> + compatible = 0; >> + compat32 = 0; >> + machine = elf_uval(&elf, elf.ehdr, e_machine); >> + switch (CONFIG_PAGING_LEVELS) { > > Can we make this a compile time check instead of run-time?CONFIG_PAGING_LEVELS is a constant, thus it actually is compile-time, the gcc optimizer should throw away the unused code paths. I prefer this way over cluttering the source with #ifdefs.> Also, it > would seem easier to do all the checks first and then do a printk > specifying which kernel we found and, if it''s not compatible with the > hypervisor, why not.I intentionally print kernel and xen type unconditionally. I think it is useful to have that information in the log, even if the combination is not incompatible. cheers, Gerd -- Gerd Hoffmann <kraxel@suse.de> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Emmanuel Ackaouy
2007-Jan-24 21:00 UTC
[Xen-devel] Re: [patch 2/5] libelf: use for x86 dom0 builder.
On Jan 24, 2007, at 9:41, Gerd Hoffmann wrote:> Hi, > >>> -obj-y += elf.o >>> -obj-$(CONFIG_COMPAT) += elf32.o >>> +#obj-y += elf.o >>> +#obj-$(CONFIG_COMPAT) += elf32.o >> >> Can we just zap those lines? > > Once ia64 is tested and ppc dom0 builder is ported over to libelf we > can.Can you explain what ia64 or ppc have to do with lines that are commented out?>>> + /* compatibility check */ >>> + compatible = 0; >>> + compat32 = 0; >>> + machine = elf_uval(&elf, elf.ehdr, e_machine); >>> + switch (CONFIG_PAGING_LEVELS) { >> >> Can we make this a compile time check instead of run-time? > > CONFIG_PAGING_LEVELS is a constant, thus it actually is compile-time, > the gcc optimizer should throw away the unused code paths. I prefer > this way over cluttering the source with #ifdefs.I''m not sure I follow. Are you suggesting we replace ifdefs with run time checks because the compiler will deal with it?>> Also, it >> would seem easier to do all the checks first and then do a printk >> specifying which kernel we found and, if it''s not compatible with the >> hypervisor, why not. > > I intentionally print kernel and xen type unconditionally. I think it > is useful to have that information in the log, even if the combination > is not incompatible.I didn''t suggest printing nothing when the combination is compatible. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Gerd Hoffmann
2007-Jan-25 07:59 UTC
[Xen-devel] Re: [patch 2/5] libelf: use for x86 dom0 builder.
Emmanuel Ackaouy wrote:>>>> +#obj-y += elf.o >>>> +#obj-$(CONFIG_COMPAT) += elf32.o >>> >>> Can we just zap those lines? >> >> Once ia64 is tested and ppc dom0 builder is ported over to libelf we can. > > Can you explain what ia64 or ppc have to do with lines that are commented > out?ia64 should work in theory, cross-compiling worked last time I tried, didn''t boot it though due to lack of hardware. ppc(64) needs adaptions, simliar to the changes in xen/arch/x86/domain_build.c and xen/arch/ia64/xen/domain.c>>>> + /* compatibility check */ >>>> + compatible = 0; >>>> + compat32 = 0; >>>> + machine = elf_uval(&elf, elf.ehdr, e_machine); >>>> + switch (CONFIG_PAGING_LEVELS) { >>> >>> Can we make this a compile time check instead of run-time? >> >> CONFIG_PAGING_LEVELS is a constant, thus it actually is compile-time, >> the gcc optimizer should throw away the unused code paths. I prefer >> this way over cluttering the source with #ifdefs. > > I''m not sure I follow. Are you suggesting we replace ifdefs with run > time checks because the compiler will deal with it?Yes. CONFIG_COMPAT is partly handled that way too: with compat=n the IS_COMPAT() macro is defined to 0, and gcc will optimize out the conditional code which can run with compat=y only.>>> Also, it >>> would seem easier to do all the checks first and then do a printk >>> specifying which kernel we found and, if it''s not compatible with the >>> hypervisor, why not. >> >> I intentionally print kernel and xen type unconditionally. I think it >> is useful to have that information in the log, even if the combination >> is not incompatible. > > I didn''t suggest printing nothing when the combination is compatible.I don''t see the point in rearranging the code then. cheers, Gerd -- Gerd Hoffmann <kraxel@suse.de> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel