mirror of
https://github.com/autc04/Retro68.git
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98 lines
1.9 KiB
ArmAsm
98 lines
1.9 KiB
ArmAsm
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/* This is a simple version of setjmp and longjmp for MIPS 32 and 64.
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Ian Lance Taylor, Cygnus Support, 13 May 1993. */
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#ifdef __mips16
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/* This file contains 32 bit assembly code. */
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.set nomips16
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#endif
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#define GPR_LAYOUT \
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GPR_OFFSET ($16, 0); \
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GPR_OFFSET ($17, 1); \
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GPR_OFFSET ($18, 2); \
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GPR_OFFSET ($19, 3); \
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GPR_OFFSET ($20, 4); \
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GPR_OFFSET ($21, 5); \
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GPR_OFFSET ($22, 6); \
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GPR_OFFSET ($23, 7); \
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GPR_OFFSET ($29, 8); \
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GPR_OFFSET ($30, 9); \
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GPR_OFFSET ($31, 10)
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#define NUM_GPRS_SAVED 11
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#ifdef __mips_hard_float
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#define FPR_LAYOUT \
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FPR_OFFSET ($f20, 0); \
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FPR_OFFSET ($f21, 1); \
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FPR_OFFSET ($f22, 2); \
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FPR_OFFSET ($f23, 3); \
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FPR_OFFSET ($f24, 4); \
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FPR_OFFSET ($f25, 5); \
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FPR_OFFSET ($f26, 6); \
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FPR_OFFSET ($f27, 7); \
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FPR_OFFSET ($f28, 8); \
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FPR_OFFSET ($f29, 9); \
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FPR_OFFSET ($f30, 10); \
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FPR_OFFSET ($f31, 11)
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#else
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#define FPR_LAYOUT
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#endif
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#ifdef __mips64
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#define BYTES_PER_WORD 8
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#define LOAD_GPR ld
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#define LOAD_FPR ldc1
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#define STORE_GPR sd
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#define STORE_FPR sdc1
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#else
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#define BYTES_PER_WORD 4
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#define LOAD_GPR lw
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#define LOAD_FPR lwc1
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#define STORE_GPR sw
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#define STORE_FPR swc1
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#endif
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#define GPOFF(INDEX) (INDEX * BYTES_PER_WORD)
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#define FPOFF(INDEX) ((INDEX + NUM_GPRS_SAVED) * BYTES_PER_WORD)
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/* int setjmp (jmp_buf); */
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.globl setjmp
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.ent setjmp
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setjmp:
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.frame $sp,0,$31
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#define GPR_OFFSET(REG, INDEX) STORE_GPR REG,GPOFF(INDEX)($4)
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#define FPR_OFFSET(REG, INDEX) STORE_FPR REG,FPOFF(INDEX)($4)
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GPR_LAYOUT
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FPR_LAYOUT
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#undef GPR_OFFSET
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#undef FPR_OFFSET
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move $2,$0
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j $31
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.end setjmp
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/* volatile void longjmp (jmp_buf, int); */
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.globl longjmp
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.ent longjmp
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longjmp:
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.frame $sp,0,$31
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#define GPR_OFFSET(REG, INDEX) LOAD_GPR REG,GPOFF(INDEX)($4)
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#define FPR_OFFSET(REG, INDEX) LOAD_FPR REG,FPOFF(INDEX)($4)
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GPR_LAYOUT
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FPR_LAYOUT
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#undef GPR_OFFSET
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#undef FPR_OFFSET
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bne $5,$0,1f
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li $5,1
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1:
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move $2,$5
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j $31
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.end longjmp
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