search for: elfmag

...X_DMA_SECTIONS]; unsigned num = 0; @@ -916,20 +1068,45 @@ static void handle_input(int fd, int chi } } +static unsigned long load_elf_header(unsigned char *elf_nident) +{ + errno = 0; + switch (*(elf_nident+EI_CLASS)) { + case ELFCLASS32: + finish = finish32; + if (memcmp(elf_nident, ELFMAG, SELFMAG) == 0) + return (unsigned long)map_elf32; + else + return (unsigned long)load_bzimage; + break; + case ELFCLASS64: + finish = finish64; + if (memcmp(elf_nident, ELFMAG, SELFMAG) == 0) + return (unsigned long)map_elf64; + else + return (unsigned long)load_bzimage; +...

...X_DMA_SECTIONS]; unsigned num = 0; @@ -916,20 +1068,45 @@ static void handle_input(int fd, int chi } } +static unsigned long load_elf_header(unsigned char *elf_nident) +{ + errno = 0; + switch (*(elf_nident+EI_CLASS)) { + case ELFCLASS32: + finish = finish32; + if (memcmp(elf_nident, ELFMAG, SELFMAG) == 0) + return (unsigned long)map_elf32; + else + return (unsigned long)load_bzimage; + break; + case ELFCLASS64: + finish = finish64; + if (memcmp(elf_nident, ELFMAG, SELFMAG) == 0) + return (unsigned long)map_elf64; + else + return (unsigned long)load_bzimage; +...

...32_Phdr *phdr; + char *secstrings; + int i, j, n; + + hdr =3D (Elf32_Ehdr *)page; + = + printk("Remapping vsyscall page to %08x\n", (unsigned int)VDSO_HIGH_BASE); + + /* Sanity checks against insmoding binaries or wrong arch, + weird elf version */ + if (memcmp(hdr->e_ident, ELFMAG, 4) !=3D 0 || + !elf_check_arch(hdr) || + hdr->e_type !=3D ET_DYN) + panic("Bogus ELF in vsyscall DSO\n"); + + hdr->e_entry +=3D VDSO_HIGH_BASE; + sechdrs =3D (void *)hdr + hdr->e_shoff; + secstrings =3D (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; + + for (i =3D 1; i...

...32_Phdr *phdr; + char *secstrings; + int i, j, n; + + hdr =3D (Elf32_Ehdr *)page; + = + printk("Remapping vsyscall page to %08x\n", (unsigned int)VDSO_HIGH_BASE); + + /* Sanity checks against insmoding binaries or wrong arch, + weird elf version */ + if (memcmp(hdr->e_ident, ELFMAG, 4) !=3D 0 || + !elf_check_arch(hdr) || + hdr->e_type !=3D ET_DYN) + panic("Bogus ELF in vsyscall DSO\n"); + + hdr->e_entry +=3D VDSO_HIGH_BASE; + sechdrs =3D (void *)hdr + hdr->e_shoff; + secstrings =3D (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; + + for (i =3D 1; i...

This adds [f]getc() and fgets() for parsing config files. Probably hard to avoid. Still trying to decide if I actually want to add system() or not. -hpa

...ntries to zero. We'll fill them in as + // needed when GOT-based relocations are applied. + memset(Addr, 0, TotalSize); + GOTSectionID = SectionID; + } +} + bool RuntimeDyldELF::isCompatibleFormat(const ObjectBuffer *Buffer) const { if (Buffer->getBufferSize() < strlen(ELF::ElfMagic)) return false; Modified: llvm/trunk/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h?rev=188726&r1=188725&r2=188726&view=diff ===================================================...

Create a configurable hole in the linear address space at the top of memory. A more advanced interface is needed to negotiate how much space the hypervisor is allowed to steal, but in the end, it seems most likely that a fixed constant size will be chosen for the compiled kernel, potentially propagated to an information page used by paravirtual initialization to determine interface compatibility.

Create a configurable hole in the linear address space at the top of memory. A more advanced interface is needed to negotiate how much space the hypervisor is allowed to steal, but in the end, it seems most likely that a fixed constant size will be chosen for the compiled kernel, potentially propagated to an information page used by paravirtual initialization to determine interface compatibility.

...tatic void fixup_vsyscall_elf(char *page) +{ + Elf32_Ehdr *hdr; + Elf32_Shdr *sechdrs; + Elf32_Phdr *phdr; + char *secstrings; + int i, j, n; + + hdr =3D (Elf32_Ehdr *)page; + + /* Sanity checks against insmoding binaries or wrong arch, + weird elf version */ + if (memcmp(hdr->e_ident, ELFMAG, 4) !=3D 0 || + !elf_check_arch(hdr) || + hdr->e_type !=3D ET_DYN) + panic("Bogus ELF in vsyscall DSO\n"); + + hdr->e_entry +=3D VSYSCALL_RELOCATION; + + sechdrs =3D (void *)hdr + hdr->e_shoff; + secstrings =3D (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; + + for (i =3...

...tatic void fixup_vsyscall_elf(char *page) +{ + Elf32_Ehdr *hdr; + Elf32_Shdr *sechdrs; + Elf32_Phdr *phdr; + char *secstrings; + int i, j, n; + + hdr =3D (Elf32_Ehdr *)page; + + /* Sanity checks against insmoding binaries or wrong arch, + weird elf version */ + if (memcmp(hdr->e_ident, ELFMAG, 4) !=3D 0 || + !elf_check_arch(hdr) || + hdr->e_type !=3D ET_DYN) + panic("Bogus ELF in vsyscall DSO\n"); + + hdr->e_entry +=3D VSYSCALL_RELOCATION; + + sechdrs =3D (void *)hdr + hdr->e_shoff; + secstrings =3D (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; + + for (i =3...

Hi Andi, Here's a couple of patches to fix up COMPAT_VDSO: The first is a straightforward implementation of Jan's original idea of relocating the VDSO to match its mapped location. Unlike Jan and Zach's version, I changed it to relocate based on the phdrs rather than the sections; the result is pleasantly compact. The second patch takes advantage of the fact that all the

Hi Andi, Here's a couple of patches to fix up COMPAT_VDSO: The first is a straightforward implementation of Jan's original idea of relocating the VDSO to match its mapped location. Unlike Jan and Zach's version, I changed it to relocate based on the phdrs rather than the sections; the result is pleasantly compact. The second patch takes advantage of the fact that all the

...ng /dev/zero"); + + mem = memparse(argv[1]); + kern_fd = open(argv[2], O_RDONLY, 0); + if (kern_fd < 0) + err(1, "Opening %s", argv[2]); + + if (read(kern_fd, &hdr, sizeof(hdr)) != sizeof(hdr)) + err(1, "Reading %s elf header", argv[2]); + + if (memcmp(hdr.e_ident, ELFMAG, SELFMAG) == 0) + load = map_elf; + else + load = load_bzimage; + + devices.max_infd = -1; + devices.dev = NULL; + FD_ZERO(&devices.infds); + + devdescs = map_pages(mem, 1); + arg = 3; + while (argv[arg] && argv[arg][0] == '-') { + const char *argval; + + if ((argval = get_a...

...ng /dev/zero"); + + mem = memparse(argv[1]); + kern_fd = open(argv[2], O_RDONLY, 0); + if (kern_fd < 0) + err(1, "Opening %s", argv[2]); + + if (read(kern_fd, &hdr, sizeof(hdr)) != sizeof(hdr)) + err(1, "Reading %s elf header", argv[2]); + + if (memcmp(hdr.e_ident, ELFMAG, SELFMAG) == 0) + load = map_elf; + else + load = load_bzimage; + + devices.max_infd = -1; + devices.dev = NULL; + FD_ZERO(&devices.infds); + + devdescs = map_pages(mem, 1); + arg = 3; + while (argv[arg] && argv[arg][0] == '-') { + const char *argval; + + if ((argval = get_a...

Hi Andi, Four patches: - clean up asm/bugs.h, by moving all the C code into its own C file - split identify_cpu() into boot and secondary variants, so that boot-time setup functions can be marked __init - repost of the COMPAT_VDSO patches with a bit more robustness from unknown DT_tags, and functions marked __init, since all this is boot-time only setup. Thanks, J --

Hi Andi, Four patches: - clean up asm/bugs.h, by moving all the C code into its own C file - split identify_cpu() into boot and secondary variants, so that boot-time setup functions can be marked __init - repost of the COMPAT_VDSO patches with a bit more robustness from unknown DT_tags, and functions marked __init, since all this is boot-time only setup. Thanks, J --

...page_offset); + } + } + errx(1, "Could not find kernel in bzImage"); +} + +static unsigned long load_kernel(int fd, unsigned long *page_offset) +{ + Elf32_Ehdr hdr; + + if (read(fd, &hdr, sizeof(hdr)) != sizeof(hdr)) + err(1, "Reading kernel"); + + if (memcmp(hdr.e_ident, ELFMAG, SELFMAG) == 0) + return map_elf(fd, &hdr, page_offset); + + return load_bzimage(fd, page_offset); +} + +static inline unsigned long page_align(unsigned long addr) +{ + return ((addr + getpagesize()-1) & ~(getpagesize()-1)); +} + +/* initrd gets loaded at top of memory: return length. */ +...

...page_offset); + } + } + errx(1, "Could not find kernel in bzImage"); +} + +static unsigned long load_kernel(int fd, unsigned long *page_offset) +{ + Elf32_Ehdr hdr; + + if (read(fd, &hdr, sizeof(hdr)) != sizeof(hdr)) + err(1, "Reading kernel"); + + if (memcmp(hdr.e_ident, ELFMAG, SELFMAG) == 0) + return map_elf(fd, &hdr, page_offset); + + return load_bzimage(fd, page_offset); +} + +static inline unsigned long page_align(unsigned long addr) +{ + return ((addr + getpagesize()-1) & ~(getpagesize()-1)); +} + +/* initrd gets loaded at top of memory: return length. */ +...

Hi all, These are the patches I'm planning to submit for 2.6.24. Comments gratefully accepted. Along with the usual cleanups and improvements are Jes' de-i386-ification patches, and a new "virtio" mechanism designed to be shared with KVM (and hopefully other hypervisors). Cheers, Rusty. Documentation/lguest/Makefile | 30 Documentation/lguest/lguest.c

Hi all, These are the patches I'm planning to submit for 2.6.24. Comments gratefully accepted. Along with the usual cleanups and improvements are Jes' de-i386-ification patches, and a new "virtio" mechanism designed to be shared with KVM (and hopefully other hypervisors). Cheers, Rusty. Documentation/lguest/Makefile | 30 Documentation/lguest/lguest.c