svn commit: r261591 - head/lib/libstand/powerpc

[Nathan Whitehorn]

Author: nwhitehorn
Date: Fri Feb  7 14:24:36 2014
New Revision: 261591
URL: http://svnweb.freebsd.org/changeset/base/261591

Log:
  Make libstand setjmp work for both 64- and 32-bit ABIs.

Modified:
  head/lib/libstand/powerpc/_setjmp.S

Modified: head/lib/libstand/powerpc/_setjmp.S
==============================================================================
--- head/lib/libstand/powerpc/_setjmp.S	Fri Feb  7 13:47:33 2014	(r261590)
+++ head/lib/libstand/powerpc/_setjmp.S	Fri Feb  7 14:24:36 2014	(r261591)
@@ -1,36 +1,115 @@
-/*	$NetBSD: _setjmp.S,v 1.1 1997/03/29 20:55:53 thorpej Exp $	*/
+/*	$FreeBSD$  */
+/*	from:	NetBSD: setjmp.S,v 1.1 1998/01/27 15:13:12 sakamoto Exp $  */
+/*	from:	OpenBSD: setjmp.S,v 1.2 1996/12/28 06:22:18 rahnds Exp 	*/
+/* kernel version of this file, does not have signal goop */
+/* int setjmp(jmp_buf env) */
 
 #include <machine/asm.h>
 
-#if (defined(LIBC_SCCS) || defined(LIBC_RCS)) && !defined(lint)
-	.text
-	.asciz "$FreeBSD$"
+#ifdef __powerpc64__
+#define LD_REG	ld
+#define	ST_REG	std
+#define	REGWIDTH 8
+#else
+#define	LD_REG	lwz
+#define	ST_REG	stw
+#define	REGWIDTH 4
 #endif
 
-/*
- * C library -- _setjmp, _longjmp
- *
- *	_longjmp(a,v)
- * will generate a "return(v?v:1)" from the last call to
- *	_setjmp(a)
- * by restoring registers from the stack.
- * The previous signal state is NOT restored.
- */
-
-ENTRY(_setjmp)
-	mflr	11
-	mfcr	12
-	mr	10,1
-	mr	9,2
-	stmw	9,8(3)
-	li	3,0
+#define JMP_r1	1*REGWIDTH
+#define JMP_r2	2*REGWIDTH
+#define JMP_r14	3*REGWIDTH
+#define JMP_r15 4*REGWIDTH
+#define JMP_r16 5*REGWIDTH
+#define JMP_r17 6*REGWIDTH
+#define JMP_r18 7*REGWIDTH
+#define JMP_r19 8*REGWIDTH
+#define JMP_r20 9*REGWIDTH
+#define JMP_r21 10*REGWIDTH
+#define JMP_r22 11*REGWIDTH
+#define JMP_r23 12*REGWIDTH
+#define JMP_r24 13*REGWIDTH
+#define JMP_r25 14*REGWIDTH
+#define JMP_r26 15*REGWIDTH
+#define JMP_r27 16*REGWIDTH
+#define JMP_r28 17*REGWIDTH
+#define JMP_r29 18*REGWIDTH
+#define JMP_r30 19*REGWIDTH
+#define JMP_r31 20*REGWIDTH
+#define JMP_lr 	21*REGWIDTH
+#define JMP_cr	22*REGWIDTH
+#define JMP_ctr	23*REGWIDTH
+#define JMP_xer	24*REGWIDTH
+#define JMP_sig	25*REGWIDTH
+
+ASENTRY_NOPROF(setjmp)
+	ST_REG 31, JMP_r31(3)
+	/* r1, r2, r14-r30 */
+	ST_REG 1,  JMP_r1 (3)
+	ST_REG 2,  JMP_r2 (3)
+	ST_REG 14, JMP_r14(3)
+	ST_REG 15, JMP_r15(3)
+	ST_REG 16, JMP_r16(3)
+	ST_REG 17, JMP_r17(3)
+	ST_REG 18, JMP_r18(3)
+	ST_REG 19, JMP_r19(3)
+	ST_REG 20, JMP_r20(3)
+	ST_REG 21, JMP_r21(3)
+	ST_REG 22, JMP_r22(3)
+	ST_REG 23, JMP_r23(3)
+	ST_REG 24, JMP_r24(3)
+	ST_REG 25, JMP_r25(3)
+	ST_REG 26, JMP_r26(3)
+	ST_REG 27, JMP_r27(3)
+	ST_REG 28, JMP_r28(3)
+	ST_REG 29, JMP_r29(3)
+	ST_REG 30, JMP_r30(3)
+	/* cr, lr, ctr, xer */
+	mfcr 0
+	ST_REG 0, JMP_cr(3)
+	mflr 0
+	ST_REG 0, JMP_lr(3)
+	mfctr 0
+	ST_REG 0, JMP_ctr(3)
+	mfxer 0
+	ST_REG 0, JMP_xer(3)
+	/* f14-f31, fpscr */
+	li 3, 0
 	blr
 
-ENTRY(_longjmp)
-	lmw	9,8(3)
-	mtlr	11
-	mtcr	12
-	mr	2,9
-	mr	1,10
-	mr	3,4
+
+.extern sigsetmask
+ASENTRY_NOPROF(longjmp)
+	LD_REG 31, JMP_r31(3)
+	/* r1, r2, r14-r30 */
+	LD_REG 1,  JMP_r1 (3)
+	LD_REG 2,  JMP_r2 (3)
+	LD_REG 14, JMP_r14(3)
+	LD_REG 15, JMP_r15(3)
+	LD_REG 16, JMP_r16(3)
+	LD_REG 17, JMP_r17(3)
+	LD_REG 18, JMP_r18(3)
+	LD_REG 19, JMP_r19(3)
+	LD_REG 20, JMP_r20(3)
+	LD_REG 21, JMP_r21(3)
+	LD_REG 22, JMP_r22(3)
+	LD_REG 23, JMP_r23(3)
+	LD_REG 24, JMP_r24(3)
+	LD_REG 25, JMP_r25(3)
+	LD_REG 26, JMP_r26(3)
+	LD_REG 27, JMP_r27(3)
+	LD_REG 28, JMP_r28(3)
+	LD_REG 29, JMP_r29(3)
+	LD_REG 30, JMP_r30(3)
+	/* cr, lr, ctr, xer */
+	LD_REG 0, JMP_cr(3)
+	mtcr 0
+	LD_REG 0, JMP_lr(3)
+	mtlr 0
+	LD_REG 0, JMP_ctr(3)
+	mtctr 0
+	LD_REG 0, JMP_xer(3)
+	mtxer 0
+	/* f14-f31, fpscr */
+	mr 3, 4
 	blr