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authorUlrich Drepper <drepper@redhat.com>2004-12-07 20:34:18 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-07 20:34:18 +0000
commit484cc8018b9e27a8fd90f15eaeee132a430131d8 (patch)
treeb33d11a83982fbc4658d97954cdb6d857fd776f5 /sysdeps
parent2da9a6a1a7e08651875ac0026523ab6747caef2e (diff)
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Update.
2004-12-07  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/unix/sysv/linux/ia64/clone2.S (__clone2): Add support for
	NPTL where the PID is stored at userlevel and needs to be reset when
	CLONE_THREAD is not used.  Restore gp before calling _exit.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/unix/sysv/linux/ia64/clone2.S25
1 files changed, 22 insertions, 3 deletions
diff --git a/sysdeps/unix/sysv/linux/ia64/clone2.S b/sysdeps/unix/sysv/linux/ia64/clone2.S
index af5e009be4..69c9e05044 100644
--- a/sysdeps/unix/sysv/linux/ia64/clone2.S
+++ b/sysdeps/unix/sysv/linux/ia64/clone2.S
@@ -30,7 +30,7 @@
 
 ENTRY(__clone2)
 	.prologue
-	alloc r2=ar.pfs,8,0,6,0
+	alloc r2=ar.pfs,8,1,6,0
 	cmp.eq p6,p0=0,in0
 	mov r8=EINVAL
 	mov out0=in3		/* Flags are first syscall argument.	*/
@@ -63,15 +63,34 @@ ENTRY(__clone2)
 	cmp.eq CHILD,PARENT=0,r8 /* Are we the child?   */
 (p6)	br.cond.spnt.many __syscall_error
 	;;
-(CHILD)	ld8 out1=[in0],8	/* Retrieve code pointer.	*/
-(CHILD)	mov out0=in4		/* Pass proper argument	to fn */
+(CHILD)	mov loc0=gp
 (PARENT) ret
 	;;
+#ifdef RESET_PID
+	tbit.nz p6,p0=in3,16	/* CLONE_THREAD */
+	tbit.z p7,p10=in3,8	/* CLONE_VM */
+(p6)	br.cond.dptk 1f
+	;;
+	mov r15=SYS_ify (getpid)
+(p10)	addl r8=-1,r0
+(p7)	break __BREAK_SYSCALL
+	;;
+	add r9=PID,r13
+	add r10=TID,r13
+	;;
+	st4 [r9]=r8
+	st4 [r10]=r8
+	;;
+#endif
+1:	ld8 out1=[in0],8	/* Retrieve code pointer.	*/
+	mov out0=in4		/* Pass proper argument	to fn */
+	;;
 	ld8 gp=[in0]		/* Load function gp.		*/
 	mov b6=out1
 	br.call.dptk.many rp=b6	/* Call fn(arg) in the child 	*/
 	;;
 	mov out0=r8		/* Argument to _exit		*/
+	mov gp=loc0
 	.globl HIDDEN_JUMPTARGET(_exit)
 	br.call.dpnt.many rp=HIDDEN_JUMPTARGET(_exit)
 				/* call _exit with result from fn.	*/