about summary refs log tree commit diff
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>2003-12-18 06:07:27 +0000
committerUlrich Drepper <drepper@redhat.com>2003-12-18 06:07:27 +0000
commit3434f152228af9fa619de254559815363f86868a (patch)
tree1435e26d32157331baaedcbfea212e5c968224d5
parent592f26a3ed6e74aad8ff65eec9c139a6bc4aa89e (diff)
downloadglibc-3434f152228af9fa619de254559815363f86868a.tar.gz
glibc-3434f152228af9fa619de254559815363f86868a.tar.xz
glibc-3434f152228af9fa619de254559815363f86868a.zip
Update.
2003-12-18  Carlos O'Donell  <carlos@baldric.uwo.ca>

	* sysdeps/unix/sysv/linux/hppa/clone.S (__clone) [PIC]: Save PIC,
	reload PIC if we need to call __syscall_error, cleanup asm.
-rw-r--r--ChangeLog5
-rw-r--r--sysdeps/unix/sysv/linux/hppa/clone.S23
2 files changed, 25 insertions, 3 deletions
diff --git a/ChangeLog b/ChangeLog
index cc81360383..b4c20251d2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2003-12-18  Carlos O'Donell  <carlos@baldric.uwo.ca>
+
+	* sysdeps/unix/sysv/linux/hppa/clone.S (__clone) [PIC]: Save PIC,
+	reload PIC if we need to call __syscall_error, cleanup asm.
+
 2003-12-17  Carlos O'Donell  <carlos@baldric.uwo.ca>
 
 	* sysdeps/hppa/fpu/fclrexcpt.c (feclearexcept): Right shift
diff --git a/sysdeps/unix/sysv/linux/hppa/clone.S b/sysdeps/unix/sysv/linux/hppa/clone.S
index 459eaff195..4f3bb9e206 100644
--- a/sysdeps/unix/sysv/linux/hppa/clone.S
+++ b/sysdeps/unix/sysv/linux/hppa/clone.S
@@ -42,6 +42,11 @@ ENTRY(__clone)
 	stwm    %arg0,64(%arg1)
 	stw	%arg3,-60(%arg1)
 
+	/* Save the PIC register. */
+#ifdef PIC
+	stw	%r19,-32(%sr0, %sp)	/* parent */
+#endif
+
 	/* Do the system call */
 	copy	%arg2,%arg0
 	ble     0x100(%sr2,%r0)
@@ -53,19 +58,31 @@ ENTRY(__clone)
 
 	comib,=,n 0,%ret0,thread_start
 
-	/* Successful return from the parent */
+	/* Successful return from the parent
+	   No need to restore the PIC register, 
+	   since we return immediately. */
+
 	bv	%r0(%rp)
 	nop
 
 	/* Something bad happened -- no child created */
 .Lerror:
+
+	/* Restore the PIC register on error */
+#ifdef PIC
+	ldw	-32(%sr0, %sp), %r19	/* parent */
+#endif
+
 	b	__syscall_error
 	sub     %r0,%ret0,%arg0
 
 thread_start:
+
 	/* Load up the arguments.  */
-	ldw	-60(%sp),%arg0
-	ldw     -64(%sp),%r22
+	ldw	-60(%sr0, %sp),%arg0
+	ldw     -64(%sr0, %sp),%r22
+
+	/* $$dyncall fixes childs PIC register */
 
 	/* Call the user's function */
 	bl	$$dyncall,%r31