diff options
Diffstat (limited to 'libc/arch-mips/bionic/_setjmp.S')
| -rw-r--r-- | libc/arch-mips/bionic/_setjmp.S | 170 |
1 files changed, 96 insertions, 74 deletions
diff --git a/libc/arch-mips/bionic/_setjmp.S b/libc/arch-mips/bionic/_setjmp.S index d237e6d..052dacb 100644 --- a/libc/arch-mips/bionic/_setjmp.S +++ b/libc/arch-mips/bionic/_setjmp.S @@ -30,13 +30,11 @@ */ #include <private/bionic_asm.h> -#include <machine/regnum.h> #include <machine/signal.h> /* * _setjmp, _longjmp (not restoring signal state) * - * XXX FPSET should probably be taken from SR setting. hmmm... * GPOFF and FRAMESIZE must be the same for both _setjmp and _longjmp! * */ @@ -48,103 +46,127 @@ LEAF(_setjmp, FRAMESZ) PTR_SUBU sp, FRAMESZ SETUP_GP64(GPOFF, _setjmp) SAVE_GP(GPOFF) - .set noreorder -#if defined(__mips64) - dli v0, 0xACEDBADE # sigcontext magic number -#else - li v0, 0xACEDBADE # sigcontext magic number + .set reorder + +#ifndef __LP64__ + addiu a0, 7 # roundup jmpbuf addr to 8-byte boundary + li t0, ~7 + and a0, t0 #endif - REG_S v0, SC_REGS+ZERO*REGSZ(a0) - REG_S s0, SC_REGS+S0*REGSZ(a0) - REG_S s1, SC_REGS+S1*REGSZ(a0) - REG_S s2, SC_REGS+S2*REGSZ(a0) - REG_S s3, SC_REGS+S3*REGSZ(a0) - REG_S s4, SC_REGS+S4*REGSZ(a0) - REG_S s5, SC_REGS+S5*REGSZ(a0) - REG_S s6, SC_REGS+S6*REGSZ(a0) - REG_S s7, SC_REGS+S7*REGSZ(a0) - REG_S s8, SC_REGS+S8*REGSZ(a0) + + # SC_MASK is unused here + + li v0, 0xACEDBADE # sigcontext magic number + sw v0, SC_MAGIC(a0) + # callee-saved long-sized regs: + REG_S ra, SC_REGS+0*REGSZ(a0) + REG_S s0, SC_REGS+1*REGSZ(a0) + REG_S s1, SC_REGS+2*REGSZ(a0) + REG_S s2, SC_REGS+3*REGSZ(a0) + REG_S s3, SC_REGS+4*REGSZ(a0) + REG_S s4, SC_REGS+5*REGSZ(a0) + REG_S s5, SC_REGS+6*REGSZ(a0) + REG_S s6, SC_REGS+7*REGSZ(a0) + REG_S s7, SC_REGS+8*REGSZ(a0) + REG_S s8, SC_REGS+9*REGSZ(a0) REG_L v0, GPOFF(sp) - REG_S v0, SC_REGS+GP*REGSZ(a0) + REG_S v0, SC_REGS+10*REGSZ(a0) PTR_ADDU v0, sp, FRAMESZ - REG_S v0, SC_REGS+SP*REGSZ(a0) - REG_S ra, SC_PC(a0) + REG_S v0, SC_REGS+11*REGSZ(a0) -#if !defined(SOFTFLOAT) - li v0, 1 # be nice if we could tell - REG_S v0, SC_FPUSED(a0) # sc_fpused = 1 cfc1 v0, $31 - s.d $f20, SC_FPREGS+((F20-F0)*REGSZ_FP)(a0) - s.d $f22, SC_FPREGS+((F22-F0)*REGSZ_FP)(a0) - s.d $f24, SC_FPREGS+((F24-F0)*REGSZ_FP)(a0) - s.d $f26, SC_FPREGS+((F26-F0)*REGSZ_FP)(a0) - s.d $f28, SC_FPREGS+((F28-F0)*REGSZ_FP)(a0) - s.d $f30, SC_FPREGS+((F30-F0)*REGSZ_FP)(a0) -#if _MIPS_FPSET == 32 - s.d $f21, SC_FPREGS+((F21-F0)*REGSZ_FP)(a0) - s.d $f23, SC_FPREGS+((F23-F0)*REGSZ_FP)(a0) - s.d $f25, SC_FPREGS+((F25-F0)*REGSZ_FP)(a0) - s.d $f27, SC_FPREGS+((F27-F0)*REGSZ_FP)(a0) - s.d $f29, SC_FPREGS+((F29-F0)*REGSZ_FP)(a0) - s.d $f31, SC_FPREGS+((F31-F0)*REGSZ_FP)(a0) + +#ifdef __LP64__ + # callee-saved fp regs on mips n64 ABI are $f24..$f31 + s.d $f24, SC_FPREGS+0*REGSZ_FP(a0) + s.d $f25, SC_FPREGS+1*REGSZ_FP(a0) + s.d $f26, SC_FPREGS+2*REGSZ_FP(a0) + s.d $f27, SC_FPREGS+3*REGSZ_FP(a0) + s.d $f28, SC_FPREGS+4*REGSZ_FP(a0) + s.d $f29, SC_FPREGS+5*REGSZ_FP(a0) + s.d $f30, SC_FPREGS+6*REGSZ_FP(a0) + s.d $f31, SC_FPREGS+7*REGSZ_FP(a0) +#else + # callee-saved fp regs on mips o32 ABI are + # the even-numbered fp regs $f20,$f22,...$f30 + s.d $f20, SC_FPREGS+0*REGSZ_FP(a0) + s.d $f22, SC_FPREGS+1*REGSZ_FP(a0) + s.d $f24, SC_FPREGS+2*REGSZ_FP(a0) + s.d $f26, SC_FPREGS+3*REGSZ_FP(a0) + s.d $f28, SC_FPREGS+4*REGSZ_FP(a0) + s.d $f30, SC_FPREGS+5*REGSZ_FP(a0) #endif - REG_S v0, SC_FPREGS+((FSR-F0)*REGSZ)(a0) -#endif /* !SOFTFLOAT */ + sw v0, SC_FPSR(a0) + move v0, zero RESTORE_GP64 PTR_ADDU sp, FRAMESZ j ra - move v0, zero END(_setjmp) + LEAF(_longjmp, FRAMESZ) PTR_SUBU sp, FRAMESZ SETUP_GP64(GPOFF, _longjmp) SAVE_GP(GPOFF) - .set noreorder - REG_L v0, SC_REGS+ZERO*REGSZ(a0) - bne v0, 0xACEDBADE, botch # jump if error - REG_L ra, SC_PC(a0) - REG_L v0, SC_FPREGS+((FSR-F0)*REGSZ)(a0) - REG_L s0, SC_REGS+S0*REGSZ(a0) - REG_L s1, SC_REGS+S1*REGSZ(a0) - REG_L s2, SC_REGS+S2*REGSZ(a0) - REG_L s3, SC_REGS+S3*REGSZ(a0) - REG_L s4, SC_REGS+S4*REGSZ(a0) - REG_L s5, SC_REGS+S5*REGSZ(a0) - REG_L s6, SC_REGS+S6*REGSZ(a0) - REG_L s7, SC_REGS+S7*REGSZ(a0) - REG_L s8, SC_REGS+S8*REGSZ(a0) - REG_L gp, SC_REGS+GP*REGSZ(a0) - REG_L sp, SC_REGS+SP*REGSZ(a0) -#if !defined(SOFTFLOAT) + .set reorder + +#ifndef __LP64__ + addiu a0, 7 # roundup jmpbuf addr to 8-byte boundary + li t0, ~7 + and a0, t0 +#endif + + # SC_MASK is unused here + + lw v0, SC_MAGIC(a0) + li t0, 0xACEDBADE + bne v0, t0, botch # jump if error + + # callee-saved long-sized regs: + REG_L ra, SC_REGS+0*REGSZ(a0) + REG_L s0, SC_REGS+1*REGSZ(a0) + REG_L s1, SC_REGS+2*REGSZ(a0) + REG_L s2, SC_REGS+3*REGSZ(a0) + REG_L s3, SC_REGS+4*REGSZ(a0) + REG_L s4, SC_REGS+5*REGSZ(a0) + REG_L s5, SC_REGS+6*REGSZ(a0) + REG_L s6, SC_REGS+7*REGSZ(a0) + REG_L s7, SC_REGS+8*REGSZ(a0) + REG_L s8, SC_REGS+9*REGSZ(a0) + REG_L gp, SC_REGS+10*REGSZ(a0) + REG_L sp, SC_REGS+11*REGSZ(a0) + + lw v0, SC_FPSR(a0) ctc1 v0, $31 - l.d $f20, SC_FPREGS+((F20-F0)*REGSZ_FP)(a0) - l.d $f22, SC_FPREGS+((F22-F0)*REGSZ_FP)(a0) - l.d $f24, SC_FPREGS+((F24-F0)*REGSZ_FP)(a0) - l.d $f26, SC_FPREGS+((F26-F0)*REGSZ_FP)(a0) - l.d $f28, SC_FPREGS+((F28-F0)*REGSZ_FP)(a0) - l.d $f30, SC_FPREGS+((F30-F0)*REGSZ_FP)(a0) -#if _MIPS_FPSET == 32 - l.d $f21, SC_FPREGS+((F21-F0)*REGSZ_FP)(a0) - l.d $f23, SC_FPREGS+((F23-F0)*REGSZ_FP)(a0) - l.d $f25, SC_FPREGS+((F25-F0)*REGSZ_FP)(a0) - l.d $f27, SC_FPREGS+((F27-F0)*REGSZ_FP)(a0) - l.d $f29, SC_FPREGS+((F29-F0)*REGSZ_FP)(a0) - l.d $f31, SC_FPREGS+((F31-F0)*REGSZ_FP)(a0) +#ifdef __LP64__ + # callee-saved fp regs on mips n64 ABI are $f24..$f31 + l.d $f24, SC_FPREGS+0*REGSZ_FP(a0) + l.d $f25, SC_FPREGS+1*REGSZ_FP(a0) + l.d $f26, SC_FPREGS+2*REGSZ_FP(a0) + l.d $f27, SC_FPREGS+3*REGSZ_FP(a0) + l.d $f28, SC_FPREGS+4*REGSZ_FP(a0) + l.d $f29, SC_FPREGS+5*REGSZ_FP(a0) + l.d $f30, SC_FPREGS+6*REGSZ_FP(a0) + l.d $f31, SC_FPREGS+7*REGSZ_FP(a0) +#else + # callee-saved fp regs on mips o32 ABI are + # the even-numbered fp regs $f20,$f22,...$f30 + l.d $f20, SC_FPREGS+0*REGSZ_FP(a0) + l.d $f22, SC_FPREGS+1*REGSZ_FP(a0) + l.d $f24, SC_FPREGS+2*REGSZ_FP(a0) + l.d $f26, SC_FPREGS+3*REGSZ_FP(a0) + l.d $f28, SC_FPREGS+4*REGSZ_FP(a0) + l.d $f30, SC_FPREGS+5*REGSZ_FP(a0) #endif -#endif /* !SOFTFLOAT */ bne a1, zero, 1f - nop li a1, 1 # never return 0! 1: + move v0, a1 j ra - move v0, a1 botch: jal longjmperror - nop jal abort - nop RESTORE_GP64 PTR_ADDU sp, FRAMESZ END(_longjmp) |