diff options
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | com32.h | 49 |
2 files changed, 50 insertions, 1 deletions
@@ -44,7 +44,7 @@ SOURCES = $(CSRC) $(NASMSRC) *.inc BTARGET = kwdhash.gen version.gen ldlinux.bss ldlinux.sys ldlinux.bin \ pxelinux.0 mbr.bin isolinux.bin isolinux-debug.bin ITARGET = syslinux.com syslinux copybs.com gethostip -DOCS = COPYING NEWS README TODO *.doc sample +DOCS = COPYING NEWS README TODO *.doc sample com32.h OTHER = Makefile bin2c.pl now.pl genhash.pl keywords findpatch.pl \ keytab-lilo.pl version version.pl sys2ansi.pl \ ppmtolss16 lss16toppm memdisk diff --git a/com32.h b/com32.h new file mode 100644 index 00000000..21415afe --- /dev/null +++ b/com32.h @@ -0,0 +1,49 @@ +/* ----------------------------------------------------------------------- * + * Not Copyright 2002 H. Peter Anvin + * This file is in the public domain. + * ----------------------------------------------------------------------- */ + +/* + * com32.h + * + * Common declarations for com32 programs. + */ + +#ifndef _COM32_H +#define _COM32_H + + +/* + * This structure defines the register frame used by the + * system call interface. + * + * The syscall interface is: + * + * __syscall(<interrupt #>, <source regs>, <return regs>) + */ +typedef struct { + unsigned short gs; /* Offset 0 */ + unsigned short fs; /* Offset 2 */ + unsigned short es; /* Offset 4 */ + unsigned short ds; /* Offset 6 */ + + unsigned int edi; /* Offset 8 */ + unsigned int esi; /* Offset 12 */ + unsigned int ebp; /* Offset 16 */ + unsigned int _unused; /* Offset 20 */ + unsigned int ebx; /* Offset 24 */ + unsigned int edx; /* Offset 28 */ + unsigned int ecx; /* Offset 32 */ + unsigned int eax; /* Offset 36 */ + + unsigned int eflags; /* Offset 40 */ +} com32sys_t; + +/* The standard prototype for _start() */ +int _start(unsigned int __nargs, + char *__cmdline, + void (*__syscall)(unsigned char, com32sys_t *, com32sys_t *), + void *__bounce_ptr, + unsigned int __bounce_len); + +#endif /* _COM32_H */ |