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/* 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

#ifdef __mips64
#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,$31

#define GPR_OFFSET(REG, INDEX) STORE_GPR REG,GPOFF(INDEX)($4)
#define FPR_OFFSET(REG, INDEX) STORE_FPR REG,FPOFF(INDEX)($4)
        GPR_LAYOUT
        FPR_LAYOUT
#undef GPR_OFFSET
#undef FPR_OFFSET

        move    $2,$0
        j       $31

        .end    setjmp

/* volatile void longjmp (jmp_buf, int);  */
        .globl  longjmp
        .ent    longjmp
longjmp:
        .frame  $sp,0,$31

#define GPR_OFFSET(REG, INDEX) LOAD_GPR REG,GPOFF(INDEX)($4)
#define FPR_OFFSET(REG, INDEX) LOAD_FPR REG,FPOFF(INDEX)($4)
        GPR_LAYOUT
        FPR_LAYOUT
#undef GPR_OFFSET
#undef FPR_OFFSET

        bne     $5,$0,1f
        li      $5,1
1:
        move    $2,$5
        j       $31

        .end longjmp