diff options
Diffstat (limited to 'newlib/libc/machine/mips/setjmp.S')
| -rw-r--r-- | newlib/libc/machine/mips/setjmp.S | 161 |
1 files changed, 98 insertions, 63 deletions
diff --git a/newlib/libc/machine/mips/setjmp.S b/newlib/libc/machine/mips/setjmp.S index 268cb1862..9778394ac 100644 --- a/newlib/libc/machine/mips/setjmp.S +++ b/newlib/libc/machine/mips/setjmp.S @@ -1,76 +1,72 @@ /* This is a simple version of setjmp and longjmp for MIPS 32 and 64. - Ian Lance Taylor, Cygnus Support, 13 May 1993. */ + The MIPS 32 version does NOT save the floating point register, which is + wrong, but I don't know how to cleanly handle machines without a + floating point coprocessor. + + Ian Lance Taylor, Cygnus Support, 13 May 1993. + + The MIPS 64 version saves registers fp20 to fp31. 23 registers + are saved in all. */ #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 +#ifdef __mips64 + + sd $16, 000($4) /* s0 */ + sd $17, 010($4) /* s1 */ + sd $18, 020($4) /* s2 */ + sd $19, 030($4) /* s3 */ + sd $20, 040($4) /* s4 */ + sd $21, 050($4) /* s5 */ + sd $22, 060($4) /* s6 */ + sd $23, 070($4) /* s7 */ + + sdc1 $f20, 0100($4) + sdc1 $f21, 0110($4) + sdc1 $f22, 0120($4) + sdc1 $f23, 0130($4) + sdc1 $f24, 0140($4) + sdc1 $f25, 0150($4) + sdc1 $f26, 0160($4) + sdc1 $f27, 0170($4) + sdc1 $f28, 0200($4) + sdc1 $f29, 0210($4) + sdc1 $f30, 0220($4) + sdc1 $f31, 0230($4) + + sd $29, 0240($4) /* sp */ + sd $30, 0250($4) /* fp */ + sd $31, 0260($4) /* ra */ + +#else /* not __mips64 */ + + sw $16,0($4) /* $s0 */ + sw $17,4($4) /* $s1 */ + sw $18,8($4) /* $s2 */ + sw $19,12($4) /* $s3 */ + sw $20,16($4) /* $s4 */ + sw $21,20($4) /* $s5 */ + sw $22,24($4) /* $s6 */ + sw $23,28($4) /* $s7 */ + sw $30,32($4) /* $s8 */ + + sw $sp,36($4) + sw $31,40($4) + +#endif /* not __mips64 */ move $2,$0 + j $31 .end setjmp @@ -81,17 +77,56 @@ setjmp: 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 +#ifdef __mips64 + + ld $16, 000($4) /* s0 */ + ld $17, 010($4) /* s1 */ + ld $18, 020($4) /* s2 */ + ld $19, 030($4) /* s3 */ + ld $20, 040($4) /* s4 */ + ld $21, 050($4) /* s5 */ + ld $22, 060($4) /* s6 */ + ld $23, 070($4) /* s7 */ + + ldc1 $f20, 0100($4) + ldc1 $f21, 0110($4) + ldc1 $f22, 0120($4) + ldc1 $f23, 0130($4) + ldc1 $f24, 0140($4) + ldc1 $f25, 0150($4) + ldc1 $f26, 0160($4) + ldc1 $f27, 0170($4) + ldc1 $f28, 0200($4) + ldc1 $f29, 0210($4) + ldc1 $f30, 0220($4) + ldc1 $f31, 0230($4) + + ld $29, 0240($4) /* sp */ + ld $30, 0250($4) /* fp */ + ld $31, 0260($4) /* ra */ + +#else /* not __mips64 */ + + lw $16,0($4) /* $s0 */ + lw $17,4($4) /* $s1 */ + lw $18,8($4) /* $s2 */ + lw $19,12($4) /* $s3 */ + lw $20,16($4) /* $s4 */ + lw $21,20($4) /* $s5 */ + lw $22,24($4) /* $s6 */ + lw $23,28($4) /* $s7 */ + lw $30,32($4) /* $s8 */ + + lw $sp,36($4) + lw $31,40($4) + +#endif /* not __mips64 */ bne $5,$0,1f li $5,1 1: move $2,$5 + j $31 .end longjmp |