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/*
* ia64 specific vfork syscall
*
* Written By: Martin Hicks <mort@wildopensource.com>
*
*/
/* This syscall is a special case of the clone syscall */
#include <asm/unistd.h>
#include <asm/signal.h>
/* These are redefined here because linux/sched.h isn't safe for
* inclusion in asm.
*/
#define CLONE_VM 0x00000100 /* set if VM shared between processes */
#define CLONE_VFORK 0x00004000 /* set if parent wants the child to wake it up on exit */
/* pid_t vfork(void) */
/* Implemented as clone(CLONE_VFORK | CLONE_VM | SIGCHLD, 0) */
.align 32
.proc vfork
.global vfork
vfork:
alloc r2=ar.pfs,0,0,2,0
mov r15=__NR_clone
mov out0=CLONE_VM|CLONE_VFORK|SIGCHLD
mov out1=0
break 0x100000 // Do the syscall
cmp.eq p7,p6 = -1,r10
;;
(p7) movl r14 = errno
;;
(p7) st4 [r14]=r8
(p7) mov r8=-1
br.ret.sptk.many b0
.endp vfork
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