search for: __intcall

...00 +0400 +++ syslinux-6.02/core/fs/diskio_bios.c 2014-02-20 12:15:08.000000000 +0400 @@ -337,7 +337,7 @@ struct disk *bios_disk_init(void *privat /* Get EBIOS support */ ireg.eax.b[1] = 0x41; ireg.ebx.w[0] = 0x55aa; - ireg.eflags.b[0] = 0x3; /* CF set */ + ireg.edx.b[0] = devno; __intcall(0x13,&ireg,&oreg); @@ -353,6 +353,7 @@ struct disk *bios_disk_init(void *privat edd_params.len = sizeof edd_params; ireg.eax.b[1] = 0x48; + ireg.edx.b[0] = devno; ireg.ds = SEG(&edd_params); ireg.esi.w[0] = OFFS(&edd_params); __intc...

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-s...

...int flags; int version; openconsole(&dev_null_r, &dev_stdcon_w); printf("APM/ACPI Off\nCopyright (C) 1999,2005 Luciano Rocha.\n"); /* clear input registers */ memset(&in, '\0', sizeof in); /* check APM support and version */ in.eax.w[0] = 0x5300; __intcall(0x15, &in, &out); /* version in ax, bx must be equal to "PM" */ if (out.eflags.l & EFLAGS_CF || out.ebx.w[0] != 0x504d) { printf("APM not detected.\n"); return 1; } printf("APM BIOS Version %x.%x found.\n", out.eax.b[1], out.eax.b[0]);...

Hi Peter, The main part of this pull request includes commits that try to replace as many __intcall() invocations as possible. Some remain, but not many (and eventually they'll be gone too). There's also a patch to make better use of ld's --as-needed option and various other bug fixes/cleanups. The following changes since commit ff7334a2ce536b7f4b1f6d6f93ff4e285a3bd45a: Only compi...

diff --git a/core/localboot.c b/core/localboot.c index 0b8769e4..30bfb272 100644 --- a/core/localboot.c +++ b/core/localboot.c @@ -63,7 +63,6 @@ __export void local_boot(int16_t ax) ireg.eax.w[0] = 0; /* Reset drive */ __intcall(0x13, &ireg, NULL); - memset(&ireg, 0, sizeof(ireg)); ireg.eax.w[0] = 0x0201; /* Read one sector */ ireg.ecx.w[0] = 0x0001; /* C/H/S = 0/0/1 (first sector) */ ireg.ebx.w[0] = OFFS(trackbuf); 21.01.2019 11:03, Erwan Velu writes: > Can you share the patch you used ? >

...what I'm trying to do is send (possibly receive) UDP packets via the PXE stack using the com32 API (using version 3.11 of syslinux). I have followed both the comboot API doc and the aforementioned thread; however they disagree on which registers are used for which bits of data in the setup for __intcall(). According to the comboot doc, to call the PXE stack's 'get cached info' function: Input: AX 0009h BX PXE function number ES:DI PXE data buffer Output: AX PXE return status code or, in com32 terms (the PXE call argument struct has been copied into the bou...

...*** com32/lib/sys/xserial_write.c~ 2006-10-30 08:30:35.000000000 +0900 --- com32/lib/sys/xserial_write.c 2006-10-30 08:31:30.000000000 +0900 *************** *** 43,49 **** { static com32sys_t ireg; /* Zeroed with the BSS */ ! ireg.eax.w[0] = 0x0400 | (unsigned char)ch; __intcall(0x21, &ireg, NULL); } --- 43,50 ---- { static com32sys_t ireg; /* Zeroed with the BSS */ ! ireg.eax.b[1] = 0x04; ! ireg.edx.b[0] = ch; __intcall(0x21, &ireg, NULL); } -- HIRANO Takahito hiranotaka%zng.info

...ux-6.02/core/fs/diskio_bios.c 2014-02-23 14:04:17.876084866 -0500 @@ -337,6 +337,7 @@ struct disk *bios_disk_init(void *privat /* Get EBIOS support */ ireg.eax.b[1] = 0x41; ireg.ebx.w[0] = 0x55aa; + ireg.edx.b[0] = devno; ireg.eflags.b[0] = 0x3; /* CF set */ __intcall(0x13, &ireg, &oreg); @@ -353,6 +354,7 @@ struct disk *bios_disk_init(void *privat edd_params.len = sizeof edd_params; ireg.eax.b[1] = 0x48; + ireg.edx.b[0] = devno; ireg.ds = SEG(&edd_params); ireg.esi.w[0] = OFFS(&edd_params);...

...poweroff module + */ + +#include <stdio.h> +#include <string.h> +#include <com32.h> + +int main() +{ + com32sys_t inregs, outregs; + + memset(&inregs, 0, sizeof inregs); + + inregs.eax.l = 0x5300; /* APM Installation Check (00h) */ + inregs.ebx.l = 0; /* APM BIOS (0000h) */ + __intcall(0x15, &inregs, &outregs); + + if (outregs.eflags.l & EFLAGS_CF) { + printf("APM not present.\n"); + return 1; + } + + if ((outregs.ebx.l & 0xffff) != 0x504d) { /* signature 'PM' */ + printf("APM not present.\n"); + return 1; + } + + if ((outregs.eax.l...

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

...XXX MARK 1 for (i=0; i< 10; i++) { int j; memset(&regs_in, 0, sizeof regs_in); regs_in.eax.l = 0x0019; regs_in.edx.l = i; // sector number regs_in.ecx.l = 1; // sector count regs_in.es = SEG(sectorBuf); regs_in.ebx.w[0] = OFFS(sectorBuf); __intcall(0x22, &regs_in, NULL); printf("%d: ", i); for (j =0; j < 512; j++) { if (sectorBuf[j] != 0) printf("%x", sectorBuf[j]); } printf(" .\n"); } } This should print something if non-null data is encountered, but i see just a "....

...bounce = lmalloc(strlen(cmd) + 1); + if (!bounce) + return; + + strcpy(bounce, cmd); REG_AX(inreg) = 0x0003; // Run command - REG_BX(inreg) = OFFS(__com32.cs_bounce); - REG_ES(inreg) = SEG(__com32.cs_bounce); + REG_BX(inreg) = OFFS(bounce); + REG_ES(inreg) = SEG(bounce); __intcall(0x22, &inreg, &outreg); } @@ -62,6 +68,7 @@ void runsyslinuximage(const char *cmd, long ipappend) { unsigned int numfun = 0; char *ptr, *cmdline; + char *bounce; (void)ipappend; // XXX: Unused?! @@ -71,8 +78,12 @@ void runsyslinuximage(const char *cmd, long ipappe...

...h> #include <com32.h> +#include <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 ) @@ -198,1...

...ytem will boot properly. I would like foo.c32 to localboot. I am using the following code to try to localboot: void syslinux_localboot(int localboottype) { static com32sys_t regs; memset(&regs, 0, sizeof regs); regs.eax.w[0] = 0x0014; regs.edx.w[0] = (unsigned short) localboottype; __intcall(0x22, &regs, NULL); printf("Why did I come back?\n"); syslinux_sleep(5); exit(0); } I am observing that it returns from the __intcall and prints out my "Why did I come back?" message. I have played with this a couple of times over the last few weeks but have not figur...

Rather than acting like a typical C program using argc/argv, cmd.c32 uses __com32.cs_cmdline to retrieve what's passed to it. meminfo.c32 uses __intcall() which in the library calls __com32.cs_intcall(). Is __com32 only exposed for library functions or is there something else missing in here? Should accessing __com32.cs_cmdline be abstracted via a function call for protection? Should cmd.c32 use argc/argv instead? If we were to abstract/protect...

...ort */ > ireg.eax.b[1] = 0x41; > ireg.ebx.w[0] = 0x55aa; > - ireg.eflags.b[0] = 0x3; /* CF set */ I don't understand where the removal of that line matches with 'DL register is not set' from the description of this patch. > + ireg.edx.b[0] = devno; > > __intcall(0x13,&ireg,&oreg); > > @@ -353,6 +353,7 @@ struct disk *bios_disk_init(void *privat > edd_params.len = sizeof edd_params; > > ireg.eax.b[1] = 0x48; > + ireg.edx.b[0] = devno; > ireg.ds = SEG(&edd_params); > ireg.esi.w[0] = O...

...args.buffer = <some stuff to put my data in> memcpy(__com32.cs_bounce, &args, sizeof(args); inputRegs.es = SEG(__com32.cs_bounce); inputRegs.edi.w[0] = OFFS(__com32.cs_bounce); inputRegs.eax.w[0] = 0x0009; /* call PXE stack */ inputRegs.ebx.w[0] = 0x0033; /* PXENV_UDP_WRITE opcode */ __intcall(0x22, &inputRegs, NULL); // code end Could anyone give me a hand on that? Or is there any example already where a UDP write is used? Thanks in advance, -Stefan

Hi all I've written a basic COM32 module that checks (using the DMI example code) the product and BIOS and if the BIOS is not at the required level, is supposed to exit and boot using a DOS floppy image to flash the BIOS. The problem is that I can't work out how to call the DOS floppy image. Looking at the website, I see "Run Command" AX=0003H via int 22. The image name will

eparam would only be used if EBIOS is available. If it is not, then there is no reason to allocate eparam. Signed-off-by: Raphael S.Carvalho <raphael.scarv at gmail.com> --- com32/lib/syslinux/disk.c | 10 +++++----- 1 files changed, 5 insertions(+), 5 deletions(-) diff --git a/com32/lib/syslinux/disk.c b/com32/lib/syslinux/disk.c index 093751a..d96acbf 100644 ---

...otal; unsigned short bytes; } disk; void ExtDiskInfo(int n) { printf("ExtDiskInfo entry.\n"); com32sys_t regs; memset(&regs,0,sizeof(regs)); regs.eax.b[1] = 0x48; regs.edx.b[0] = 0x80 + n; regs.ds = SEG(__com32.cs_bounce); regs.esi.w[0] = OFFS(__com32.cs_bounce); __intcall(0x13,&regs,&regs); if (regs.eax.b[1] == 0) { memcpy(&disk,__com32.cs_bounce,sizeof(struct params)); size = disk.total * disk.bytes; printf("Total hard disk size : %lld Mb (%lld sectors)\n",size>>20,disk.total); } else printf("Disk %d error : %d\...