ref: c827bfd2eb941cfdccf9cb2a1b6e50c24af5049e
dir: /libmyr/syscall.s/
.globl std$syscall
std$syscall:
pushl %ebp
/*
hack: 6 args uses %ebp, so we index
relative to %esp.
hack: We load 6 args regardless of
how many we actually have. This may
load junk values, but if the syscall
doesn't use them, it's going to be
harmless.
*/
movl 8(%esp),%eax
movl 12(%esp),%ebx
movl 16(%esp),%ecx
movl 20(%esp),%edx
movl 24(%esp),%esi
movl 28(%esp),%edi
movl 32(%esp),%ebp
int $0x80
popl %ebp
ret
.globl _std$syscall
_std$syscall:
popl %ecx /* return address */
popl %eax /* call num */
pushl %ecx
int $0x80
pushl %ecx /* put the return address back */
ret