diff options
Diffstat (limited to 'libc/sysdeps/linux/h8300/vfork.S')
| -rw-r--r-- | libc/sysdeps/linux/h8300/vfork.S | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/h8300/vfork.S b/libc/sysdeps/linux/h8300/vfork.S new file mode 100644 index 000000000..889b43ace --- /dev/null +++ b/libc/sysdeps/linux/h8300/vfork.S @@ -0,0 +1,31 @@ + +#include <asm/unistd.h> + +#ifndef __NR_vfork +#define __NR_vfork __NR_fork /* uClinux-2.0 only has fork which is vfork */ +#endif + + .h8300h + .text + .align 2 + .globl _errno + .globl _vfork +#if defined HAVE_ELF + .type vfork,@function +#endif +_vfork: + mov.l @sp+, er1 + sub.l er0,er0 + mov.b #__NR_vfork,r0l + trapa #0 + mov.l #-4096, er2 + cmp.l er0,er2 + bcs fix_errno + jmp @er1 /* don't return, just jmp directly */ +fix_errno: + neg.l er0 + mov.l er0,@_errno + sub.l er0,er0 + dec.l #1,er0 + jmp @er1 /* don't return, just jmp directly */ + |