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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 /sysdeps
parent592f26a3ed6e74aad8ff65eec9c139a6bc4aa89e (diff)
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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.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/unix/sysv/linux/hppa/clone.S23
1 files changed, 20 insertions, 3 deletions
diff --git a/sysdeps/unix/sysv/linux/hppa/clone.S b/sysdeps/unix/sysv/linux/hppa/clone.S
index 459eaff..4f3bb9e 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