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/* $FreeBSD$ */
/* 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) */
#define _ASM
#include <asm/types.h>
#ifdef __powerpc64__
#if !defined(PPC64_ELF_ABI_v2) && !defined(PPC64_ELF_ABI_v1)
#if defined(_CALL_ELF) && _CALL_ELF == 2
#define PPC64_ELF_ABI_v2
#endif /* _CALL_ELF */
#endif /* PPC64_ELF_ABI_ */
#endif /* __powerpc64__ */
#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 /* __powerpc64__ */
#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
#ifdef __powerpc64__
#ifdef PPC64_ELF_ABI_v2
#define ENTRY(name) \
.align 2 ; \
.type name,@function; \
.weak name; \
name:
#else /* PPC64_ELF_ABI_v1 */
#define XGLUE(a,b) a##b
#define GLUE(a,b) XGLUE(a,b)
#define ENTRY(name) \
.align 2 ; \
.weak name; \
.weak GLUE(.,name); \
.pushsection ".opd","aw"; \
name: \
.quad GLUE(.,name); \
.quad .TOC.@tocbase; \
.quad 0; \
.popsection; \
.type GLUE(.,name),@function; \
GLUE(.,name):
#endif /* PPC64_ELF_ABI_v2 */
#else /* 32-bit */
#define ENTRY(name) \
.text; \
.p2align 4; \
.weak name; \
.type name,@function; \
name:
#endif /* __powerpc64__ */
ENTRY(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)
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
#ifdef __ELF__
.section .note.GNU-stack,"",%progbits
#endif
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