Loading...
--- /dev/null
+++ Libc/Libc-262/ppc/sys/longjmp.s
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * The contents of this file constitute Original Code as defined in and
+ * are subject to the Apple Public Source License Version 1.1 (the
+ * "License"). You may not use this file except in compliance with the
+ * License. Please obtain a copy of the License at
+ * http://www.apple.com/publicsource and read it before using this file.
+ *
+ * This Original Code and all software distributed under the License are
+ * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+/*
+ * Copyright (c) 1998 Apple Computer, Inc. All rights reserved.
+ *
+ * File: sys/ppc/longjmp.s
+ *
+ * Implements siglongjmp(), longjmp(), _longjmp()
+ *
+ * NOTE: Scatterloading this file will BREAK the functions.
+ *
+ * History:
+ * 30-Aug-1998 Umesh Vaishampayan (umeshv@apple.com)
+ * Created. Derived from _setjmp.s, setjmp.c and setjmp.s
+ */
+
+#include "SYS.h"
+#include <architecture/ppc/asm_help.h>
+#include "_setjmp.h"
+
+/*
+ * longjmp routines
+ */
+
+/* void siglongjmp(sigjmp_buf env, int val); */
+
+LEAF(_siglongjmp)
+ lwz r0, JMP_SIGFLAG(r3) ; load sigflag saved by siglongjmp()
+ cmpwi cr1,r0,0 ; this changes cr1[EQ] which is volatile
+ beq- cr1, L__longjmp ; if r0 == 0 do _longjmp()
+ ; else *** fall through *** to longjmp()
+
+/* void longjmp(jmp_buf env, int val); */
+
+LEAF(_longjmp)
+L_longjmp:
+ mr r30, r3
+ mr r31, r4
+ lwz r3, JMP_sig(r3) ; restore the signal mask
+ CALL_EXTERN(_sigsetmask)
+ mr r4, r31
+ mr r3, r30
+L__longjmp:
+ BRANCH_EXTERN(__longjmp)