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#include "config.h"
#include "mips.h"
/* This is a simple version of setjmp and longjmp for MIPS 32 and 64.
Ian Lance Taylor, Cygnus Support, 13 May 1993. */
#ifdef __mips16
/* This file contains 32 bit assembly code. */
.set nomips16
#endif
#define GPR_LAYOUT \
GPR_OFFSET ($16, 0); \
GPR_OFFSET ($17, 1); \
GPR_OFFSET ($18, 2); \
GPR_OFFSET ($19, 3); \
GPR_OFFSET ($20, 4); \
GPR_OFFSET ($21, 5); \
GPR_OFFSET ($22, 6); \
GPR_OFFSET ($23, 7); \
GPR_OFFSET ($29, 8); \
GPR_OFFSET ($30, 9); \
GPR_OFFSET ($31, 10)
#define NUM_GPRS_SAVED 11
#ifdef __mips_hard_float
#define FPR_LAYOUT \
FPR_OFFSET ($f20, 0); \
FPR_OFFSET ($f21, 1); \
FPR_OFFSET ($f22, 2); \
FPR_OFFSET ($f23, 3); \
FPR_OFFSET ($f24, 4); \
FPR_OFFSET ($f25, 5); \
FPR_OFFSET ($f26, 6); \
FPR_OFFSET ($f27, 7); \
FPR_OFFSET ($f28, 8); \
FPR_OFFSET ($f29, 9); \
FPR_OFFSET ($f30, 10); \
FPR_OFFSET ($f31, 11)
#else
#define FPR_LAYOUT
#endif
#if CPU_MIPS == 64
#define BYTES_PER_WORD 8
#define LOAD_GPR ld
#define LOAD_FPR ldc1
#define STORE_GPR sd
#define STORE_FPR sdc1
#else
#define BYTES_PER_WORD 4
#define LOAD_GPR lw
#define LOAD_FPR lwc1
#define STORE_GPR sw
#define STORE_FPR swc1
#endif
#define GPOFF(INDEX) (INDEX * BYTES_PER_WORD)
#define FPOFF(INDEX) ((INDEX + NUM_GPRS_SAVED) * BYTES_PER_WORD)
/* int setjmp (jmp_buf); */
.globl setjmp
.ent setjmp
setjmp:
.frame sp, 0, ra
#define GPR_OFFSET(REG, INDEX) STORE_GPR REG,GPOFF(INDEX)(a0)
#define FPR_OFFSET(REG, INDEX) STORE_FPR REG,FPOFF(INDEX)(a0)
GPR_LAYOUT
FPR_LAYOUT
#undef GPR_OFFSET
#undef FPR_OFFSET
move v0, $0
j ra
.end setjmp
/* volatile void longjmp (jmp_buf, int); */
.globl longjmp
.ent longjmp
longjmp:
.frame sp, 0, ra
#define GPR_OFFSET(REG, INDEX) LOAD_GPR REG,GPOFF(INDEX)(a0)
#define FPR_OFFSET(REG, INDEX) LOAD_FPR REG,FPOFF(INDEX)(a0)
GPR_LAYOUT
FPR_LAYOUT
#undef GPR_OFFSET
#undef FPR_OFFSET
bne a1, $0, 1f
li a1, 1
1:
move v0, a1
j ra
.end longjmp
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