search for: mk_ptr

...found = ( + /* '!M' 'EM' 'DI' 'SK' */ + results.eax.w[1] == 0x4D21 && + results.ecx.w[1] == 0x4D45 && + results.edx.w[1] == 0x4944 && + results.ebx.w[1] == 0x4B53 + ); + + if (found) + return MK_PTR(results.es, results.edi.w[0]); + + return NULL; + } + +static int scan_drives(void) { + int found, drive; + const s_mdi * mdi; + + for (found = drive = 0; drive <= 0xFF; ++drive) { + mdi = installation_check(drive); + if (!mdi) + continue; + + memdisk_i...

...ming in DOS. So this might be a stupid question. How do I access an absolute memory location in my COM32 code. If I understand it correctly, all the memory addresses use virtual addresses. I need to write code to read an absolute location in memory Is it as simple as answer = *(unsigned char *)MK_PTR(seg,ofs) or does the fact that the COM32 code is runing using virtual addresses complicate matters. - Murali

...*regs) { /* ... */ } ... where *regs is the real-mode register state. This is an input/output structure: it both reflects the incoming registers and can be changed to affect the registers on return to real mode. 16-bit pointers in a seg:off pair can be converted to a 32-bit pointer via: ptr = MK_PTR(seg, off); for example: ptr = MK_PTR(regs->es, regs->ebx.w[0]); /* ES:BX */ *** Calls from protected mode (32-bit) to real mode (16-bit): This is done via the core_intcall(), core_farcall() and core_cfarcall() functions, which are the direct versions of the analogous instructions in the...

From: Matt Fleming <matt.fleming at intel.com> Since we can't use __intcall() for EFI, and since we can now have the ELF module code resolve all our symbols at runtime, we should delete as many references to __intcall() as possible and just access the symbols directly. The most interesting patch is the support for weak symbols. We need to be able to reference derivative-specific

...om32.cs_intcall(0x22, &inregs, &inregs); - - if ((inregs.eflags.l & EFLAGS_CF) || inregs.esi.w[0] == 0) { + if (open_file(buf, &fd) <= 0) { goto fail; /* Filename not found */ } /* Since the first member is the LBA, we simply cast */ - lba = *((uint32_t *) MK_PTR(inregs.ds, inregs.esi.w[0])); - - /* Clean the registers for the next call */ - memset(&inregs, 0, sizeof(com32sys_t)); - - /* Put the filename in the bounce buffer */ - strlcpy(buf, filename, size); + lba = *((uint32_t *) MK_PTR(0, fd.handle)); /* Call comapi_close() to f...

...;syslinux/boot.h> +#include <syslinux/config.h> #ifdef DEBUG # define dprintf printf @@ -42,17 +44,6 @@ # define dprintf(...) ((void)0) #endif -static const char * -get_config(void) -{ - static com32sys_t r; - - r.eax.w[0] = 0x000E; - __intcall(0x22, &r, &r); - - return MK_PTR(r.es, r.ebx.w[0]); -} - static char * skipspace(char *p) { @@ -139,7 +130,7 @@ struct match *m; if ( !filename ) - filename = get_config(); + filename = syslinux_config_file(); f = fopen(filename, "r"); if ( !f ) @@ -198,19 +189,6 @@ return list; } -static v...

I am trying to build syslinux under gentoo on in 64 bit mode on an opteron. I get output like this ../com32/include/com32.h: In function `MK_PTR': ../com32/include/com32.h:77: warning: cast to pointer from integer of different size gcc -I../com32/include -g -Wall -O2 -fomit-frame-pointer -march=i386 -malign-functions=0 -malign-jumps=0 -malign-loops=0 -DVERSION='"2.06"' -DDATE='""' -S -o e820test.s e82...

...ethersel.c 2005-04-21 01:55:22.903371800 -0400 +++ ethersel.c.biosfix 2005-04-21 01:55:59.905746584 -0400 @@ -43,6 +43,8 @@ # define dprintf(...) ((void)0) #endif +extern enum pci_config_type __pci_cfg_type; + struct match { struct match *next; uint32_t did; @@ -64,6 +66,35 @@ return MK_PTR(r.es, r.ebx.w[0]); } +static int +get_bios(void) +{ + static com32sys_t r; + int lastbus = -1; + uint8_t bioscfg; + + r.eax.w[0] = 0xb101; + __intcall(0x1a, &r, &r); + + if (r.eax.b[1] == 0x00) { + lastbus = r.ecx.b[0]; + + if(__pci_cfg_type == PCI_CFG_AUTO) { + bioscfg...

I have a Dell 1435 system that will not respond correctly to a com32 call to Local boot Int 22h AX=14h DX = 0 This call should not return. It should unload the PXE+UNDI stacks and continue the boot process with the next boot device. This call is working fine for me on an HP DL360G2 and on a Dell PE 850. But, on this Dell 1435 the call is returning from the Int 22h. I am using syslinux 3.51

...<klibc/compiler.h> +#include <com32.h> + +#include <dirent.h> +#include <stdio.h> +#include <errno.h> + +char *getcwd(char *buf, size_t size) +{ + static com32sys_t reg; + char *pwdstr, *ret; + + reg.eax.w[0] = 0x001f; + __intcall(0x22, &reg, &reg); + pwdstr = MK_PTR(reg.es, reg.ebx.w[0]); + if ((strlen(pwdstr) < size) && (buf != NULL)) { + strcpy(buf, pwdstr); + ret = buf; + } else { + ret = NULL; + errno = ERANGE; + } + return ret; +} diff --git a/com32/lib/opendir.c b/com32/lib/opendir.c new file mode 100644 index 0000000..aa2ba5b --- /dev/nul...

...<klibc/compiler.h> +#include <com32.h> + +#include <dirent.h> +#include <stdio.h> +#include <errno.h> + +char *getcwd(char *buf, size_t size) +{ + static com32sys_t reg; + char *pwdstr, *ret; + + reg.eax.w[0] = 0x001e; + __intcall(0x22, &reg, &reg); + pwdstr = MK_PTR(reg.es, reg.ebx.w[0]); + if ((strlen(pwdstr) < size) && (buf != NULL)) { + strcpy(buf, pwdstr); + ret = buf; + } else { + ret = NULL; + errno = ERANGE; + } + return ret; +} diff --git a/com32/lib/opendir.c b/com32/lib/opendir.c new file mode 100644 index 0000000..9c036a3 --- /dev/nul...

...irmware object directory support efi: Delete unused variables efi: Add support for UGA devices efi: Forward declare 'struct screen_info' Makefile: Only provide one make rule for each directory efi: Fix warning about discarding const qualifier com32.h: Fix MK_PTR() for 64-bit initvesa.c: Delete unused variables (set but not used) and cleanup screencpy.c: Delete unused variables and cleanup i915resolution.c: cast to 64-bit sized ptr vesa: Change the prototype of __vesacon_init() Merge branch 'cleanup' into for-hpa/elflin...

From: Matt Fleming <matt.fleming at intel.com> The following patch series is available at, git://git.zytor.com/users/mfleming/syslinux.git elflink All patches are against the 'elflink' branch. This series fixes a few serious bugs and some behavioural incompatibilities with the 4.x series. Matt Fleming (19): ldlinux: Initialise 'p' before using it. ldlinux: Parse

...void) +extern void adv_init(void); +void __syslinux_init(void) { static com32sys_t reg; + /* Initialize the ADV structure */ + reg.eax.w[0] = 0x0025; + __intcall(0x22, &reg, NULL); + reg.eax.w[0] = 0x001c; __intcall(0x22, &reg, &reg); __syslinux_adv_ptr = MK_PTR(reg.es, reg.ebx.w[0]); diff --git a/com32/lib/syslinux/advwrite.c b/com32/elflink/ldlinux/advwrite.c similarity index 100% rename from com32/lib/syslinux/advwrite.c rename to com32/elflink/ldlinux/advwrite.c diff --git a/com32/elflink/ldlinux/execute.c b/com32/elflink/ldlinux/execute.c index a00a5b...

...tb(i, (uint16_t)addr); + outb(i, (uint32_t)addr); for (j = 0; j < (640 / 32); j++) *(out + j) = *(in + j); @@ -300,7 +301,8 @@ void vgadisplayfile(FILE *_fd) rledecode(VGARowBuffer, GraphXSize); packedpixel2vga(VGARowBuffer, VGAPlaneBuffer, 640); - outputvga(VGAPlaneBuffer, MK_PTR(0x0A000, VGAPos)); + outputvga((uint32_t *)VGAPlaneBuffer, + MK_PTR(0x0A000, VGAPos)); VGAPos += 640/8; } } diff --git a/core/hello.c b/core/hello.c index 45bdf57..5b22478 100644 --- a/core/hello.c +++ b/core/hello.c @@ -7,8 +7,6 @@ #include <console.h> -static int consol...

From: Matt Fleming <matt.fleming at intel.com> Here are the patches that I've got queued up based on the very helpful feedback I received from people testing Syslinux 5.00-pre9. Unless anyone has any concerns these will make it into Syslinux 5.00-pre10. Matt Fleming (9): pxe: Don't call open_config() from the pxe core ldlinux: Print a warning if no config file is found

...irmware object directory support efi: Delete unused variables efi: Add support for UGA devices efi: Forward declare 'struct screen_info' Makefile: Only provide one make rule for each directory efi: Fix warning about discarding const qualifier com32.h: Fix MK_PTR() for 64-bit initvesa.c: Delete unused variables (set but not used) and cleanup screencpy.c: Delete unused variables and cleanup i915resolution.c: cast to 64-bit sized ptr vesa: Change the prototype of __vesacon_init() Merge branch 'cleanup' into for-hpa/elflin...

...if (!buf) - return 0; - - /* Put the filename in the bounce buffer */ - strlcpy(buf, filename, size); - - if (open_file(buf, O_RDONLY, &fd) <= 0) { - goto fail; /* Filename not found */ - } - - /* Since the first member is the LBA, we simply cast */ - lba = *((uint32_t *) MK_PTR(0, fd.handle)); - - /* Call comapi_close() to free the structure */ - close_file(fd.handle); - -fail: - lfree(buf); - return lba; -} - -/* drive offset detection */ -int drvoff_detect(int type) -{ - if (bpbV40 <= type && type <= bpbVNT) { - return 0x24; - } else if (...

...if (!buf) - return 0; - - /* Put the filename in the bounce buffer */ - strlcpy(buf, filename, size); - - if (open_file(buf, O_RDONLY, &fd) <= 0) { - goto fail; /* Filename not found */ - } - - /* Since the first member is the LBA, we simply cast */ - lba = *((uint32_t *) MK_PTR(0, fd.handle)); - - /* Call comapi_close() to free the structure */ - close_file(fd.handle); - -fail: - lfree(buf); - return lba; -} - -/* drive offset detection */ -int drvoff_detect(int type) -{ - if (bpbV40 <= type && type <= bpbVNT) { - return 0x24; - } else if (...

So last week I was wondering if XFS was still working -- even with its last on-disk structure changes -- and it _suprisingly_ worked as expected. Right, now I can finally get rid of GRUB and use Syslinux to boot my Linux on EFI from a rootfs with xfs. Shit, I have two partitions (the first one being the required ESP) so there is no way to access the other partitions since because Syslinux does not