search for: comapi_open

...olks, I've got a problem with COMBoot (16 bit) in SYSLINUX 2.06: while the write string call (ax=2, int 22h) works just fine, the open file call (ax=6, int 22h) does nothing at all. Calling that function doesn't modify any register, and doesn't modify the carry flag. I then modified comapi_open in comboot.inc so it sets ax to some value and recompiled SYSLINUX, reinstalled it in my disk image and reran my tests, and still no modification to ax... I checked the syslinux source and my magic values (0xDEAD and 0xBEEF for success and failure) are there, so the code did get compiled. Does...

I just released Syslinux 4.00-pre40. This is now a Release Candidate, meaning that it is on track to be released as it currently is unless I hear back about currently unexpected problems. If you have a chance, please pretty please test it. -hpa

...art with clean registers */ memset(&inregs, 0, sizeof(com32sys_t)); + buf = lmalloc(size); + if (!buf) + return 0; + /* Put the filename in the bounce buffer */ - strlcpy(__com32.cs_bounce, filename, __com32.cs_bounce_size); + strlcpy(buf, filename, size); /* Call comapi_open() which returns a structure pointer in SI * to a structure whose first member happens to be the LBA. */ inregs.eax.w[0] = 0x0006; - inregs.esi.w[0] = OFFS(__com32.cs_bounce); - inregs.es = SEG(__com32.cs_bounce); + inregs.esi.w[0] = OFFS(buf); + inregs.es = SEG(buf);...

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

...Start with clean registers */ - memset(&inregs, 0, sizeof(com32sys_t)); - buf = lmalloc(size); if (!buf) return 0; @@ -108,32 +107,15 @@ uint32_t get_file_lba(const char *filename) /* Put the filename in the bounce buffer */ strlcpy(buf, filename, size); - /* Call comapi_open() which returns a structure pointer in SI - * to a structure whose first member happens to be the LBA. - */ - inregs.eax.w[0] = 0x0006; - inregs.esi.w[0] = OFFS(buf); - inregs.es = SEG(buf); - __com32.cs_intcall(0x22, &inregs, &inregs); - - if ((inregs.eflags.l &...