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Add support for CLONE_CHILD_*TID flags.

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This commit is contained in:
Ulrich Drepper 2002-11-22 00:01:03 +00:00
parent 714a17c327
commit 56c910668c
1 changed files with 13 additions and 8 deletions
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21
sysdeps/unix/sysv/linux/i386/clone.S
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@ -35,8 +35,9 @@
#define STACK FUNC+4
#define FLAGS STACK+PTR_SIZE
#define ARG FLAGS+4
#define TID ARG+PTR_SIZE
#define TLS TID+PTR_SIZE
#define PTID ARG+PTR_SIZE
#define TLS PTID+PTR_SIZE
#define CTID TLS+PTR_SIZE
#define __NR_clone 120
#define SYS_clone 120
@ -61,25 +62,29 @@ ENTRY (BP_SYM (__clone))
#endif
/* Insert the argument onto the new stack. */
subl $12,%ecx
subl $16,%ecx
movl ARG(%esp),%eax /* no negative argument counts */
movl %eax,8(%ecx)
movl %eax,12(%ecx)
/* Save the function pointer as the zeroth argument.
It will be popped off in the child in the ebx frobbing below. */
movl FUNC(%esp),%eax
movl %eax,4(%ecx)
movl %eax,8(%ecx)
/* Don't leak any information. */
movl $0,4(%ecx)
movl $0,(%ecx)
/* Do the system call */
pushl %ebx
pushl %esi
movl TLS+8(%esp),%esi
movl TID+8(%esp),%edx
movl FLAGS+8(%esp),%ebx
pushl %edi
movl TLS+12(%esp),%esi
movl PTID+12(%esp),%edx
movl FLAGS+12(%esp),%ebx
movl CTID+12(%esp),%edi
movl $SYS_ify(clone),%eax
int $0x80
popl %edi
popl %esi
popl %ebx