setjmp.S (251405) | setjmp.S (251514) |
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1/* $NetBSD: setjmp.S,v 1.14 2013/04/19 13:45:45 matt Exp $ */ 2 3/* 4 * Copyright (c) 1997 Mark Brinicombe 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions --- 22 unchanged lines hidden (view full) --- 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#if !defined(__SOFTFP__) && !defined(__VFP_FP__) && !defined(__ARM_PCS) 36#error FPA is not supported anymore 37#endif 38 | 1/* $NetBSD: setjmp.S,v 1.14 2013/04/19 13:45:45 matt Exp $ */ 2 3/* 4 * Copyright (c) 1997 Mark Brinicombe 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions --- 22 unchanged lines hidden (view full) --- 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#if !defined(__SOFTFP__) && !defined(__VFP_FP__) && !defined(__ARM_PCS) 36#error FPA is not supported anymore 37#endif 38 |
39#ifdef __ARM_EABI__ 40 .fpu vfp 41#endif 42 |
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39#include <machine/asm.h> 40#include <machine/setjmp.h> 41 | 43#include <machine/asm.h> 44#include <machine/setjmp.h> 45 |
42__FBSDID("$FreeBSD: head/lib/libc/arm/gen/setjmp.S 251405 2013-06-05 07:37:45Z andrew $"); | 46__FBSDID("$FreeBSD: head/lib/libc/arm/gen/setjmp.S 251514 2013-06-07 22:01:06Z andrew $"); |
43 44/* 45 * C library -- setjmp, longjmp 46 * 47 * longjmp(a,v) 48 * will generate a "return(v)" from the last call to 49 * setjmp(a) 50 * by restoring registers from the stack. --- 5 unchanged lines hidden (view full) --- 56 stmfd sp!, {r0, r14} 57 add r2, r0, #(_JB_SIGMASK * 4) /* oset */ 58 mov r1, #0x00000000 /* set */ 59 mov r0, #0x00000001 /* SIG_BLOCK */ 60 bl PIC_SYM(_C_LABEL(sigprocmask), PLT) 61 ldmfd sp!, {r0, r14} 62 63 ldr r1, .Lsetjmp_magic | 47 48/* 49 * C library -- setjmp, longjmp 50 * 51 * longjmp(a,v) 52 * will generate a "return(v)" from the last call to 53 * setjmp(a) 54 * by restoring registers from the stack. --- 5 unchanged lines hidden (view full) --- 60 stmfd sp!, {r0, r14} 61 add r2, r0, #(_JB_SIGMASK * 4) /* oset */ 62 mov r1, #0x00000000 /* set */ 63 mov r0, #0x00000001 /* SIG_BLOCK */ 64 bl PIC_SYM(_C_LABEL(sigprocmask), PLT) 65 ldmfd sp!, {r0, r14} 66 67 ldr r1, .Lsetjmp_magic |
68 69#ifdef __ARM_EABI__ 70 ldr r2, .Lfpu_present 71#ifdef PIC 72 GOT_INIT(r3, .Lsetjmp_got, .Lsetjmp_gotinit) 73 ldr r2, [r2, r3] 74#else 75 ldr r2, [r2] 76#endif 77 teq r2, #0 /* do we have a FPU? */ 78 beq 1f /* no, don't save VFP registers */ 79 80 orr r1, r1, #(_JB_MAGIC_SETJMP ^ _JB_MAGIC_SETJMP_VFP) 81 /* change magic to VFP magic */ 82 add r2, r0, #(_JB_REG_D8 * 4) 83 vstmia r2, {d8-d15} 84 vmrs r2, fpscr 85 str r2, [r0, #(_JB_REG_FPSCR * 4)] 861: 87#endif /* __ARM_EABI__ */ 88 |
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64 str r1, [r0] /* store magic */ 65 66 /* Store integer registers */ 67 add r0, r0, #(_JB_REG_R4 * 4) 68 stmia r0, {r4-r14} 69 mov r0, #0x00000000 70 RET 71 72.Lsetjmp_magic: 73 .word _JB_MAGIC_SETJMP | 89 str r1, [r0] /* store magic */ 90 91 /* Store integer registers */ 92 add r0, r0, #(_JB_REG_R4 * 4) 93 stmia r0, {r4-r14} 94 mov r0, #0x00000000 95 RET 96 97.Lsetjmp_magic: 98 .word _JB_MAGIC_SETJMP |
99#ifdef __ARM_EABI__ 100 GOT_INITSYM(.Lsetjmp_got, .Lsetjmp_gotinit) 101.Lfpu_present: 102 .word PIC_SYM(_libc_arm_fpu_present, GOTOFF) 103#endif /* __ARM_EABI__ */ |
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74 75 76.weak _C_LABEL(longjmp) 77.set _C_LABEL(longjmp), _C_LABEL(__longjmp) 78ENTRY(__longjmp) 79 ldr r2, [r0] 80 ldr ip, .Lsetjmp_magic | 104 105 106.weak _C_LABEL(longjmp) 107.set _C_LABEL(longjmp), _C_LABEL(__longjmp) 108ENTRY(__longjmp) 109 ldr r2, [r0] 110 ldr ip, .Lsetjmp_magic |
81 teq r2, ip | 111 bic r3, r2, #(_JB_MAGIC_SETJMP ^ _JB_MAGIC_SETJMP_VFP) 112 teq r3, ip |
82 bne .Lbotch 83 84 /* Restore the signal mask. */ 85 stmfd sp!, {r0-r2, r14} 86 mov r2, #0x00000000 87 add r1, r0, #(_JB_SIGMASK * 4) /* Signal mask */ 88 mov r0, #3 /* SIG_SETMASK */ 89 bl PIC_SYM(_C_LABEL(sigprocmask), PLT) 90 ldmfd sp!, {r0-r2, r14} 91 | 113 bne .Lbotch 114 115 /* Restore the signal mask. */ 116 stmfd sp!, {r0-r2, r14} 117 mov r2, #0x00000000 118 add r1, r0, #(_JB_SIGMASK * 4) /* Signal mask */ 119 mov r0, #3 /* SIG_SETMASK */ 120 bl PIC_SYM(_C_LABEL(sigprocmask), PLT) 121 ldmfd sp!, {r0-r2, r14} 122 |
123#ifdef __ARM_EABI__ 124 tst r2, #(_JB_MAGIC_SETJMP ^ _JB_MAGIC_SETJMP_VFP) 125 /* is this a VFP magic? */ 126 beq 1f /* no, don't restore VFP */ 127 add ip, r0, #(_JB_REG_D8 * 4) 128 vldmia ip, {d8-d15} 129 ldr ip, [r0, #(_JB_REG_FPSCR * 4)] 130 vmsr fpscr, ip 1311: 132#endif /* __ARM_EABI__ */ 133 |
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92 add r0, r0, #(_JB_REG_R4 * 4) 93 /* Restore integer registers */ 94 ldmia r0, {r4-r14} 95 96 /* Validate sp and r14 */ 97 teq sp, #0 98 teqne r14, #0 99 beq .Lbotch 100 101 /* Set return value */ 102 movs r0, r1 103 moveq r0, #0x00000001 104 RET 105 106 /* validation failed, die die die. */ 107.Lbotch: 108 bl PIC_SYM(_C_LABEL(longjmperror), PLT) 109 bl PIC_SYM(_C_LABEL(abort), PLT) 110 b . - 8 /* Cannot get here */ | 134 add r0, r0, #(_JB_REG_R4 * 4) 135 /* Restore integer registers */ 136 ldmia r0, {r4-r14} 137 138 /* Validate sp and r14 */ 139 teq sp, #0 140 teqne r14, #0 141 beq .Lbotch 142 143 /* Set return value */ 144 movs r0, r1 145 moveq r0, #0x00000001 146 RET 147 148 /* validation failed, die die die. */ 149.Lbotch: 150 bl PIC_SYM(_C_LABEL(longjmperror), PLT) 151 bl PIC_SYM(_C_LABEL(abort), PLT) 152 b . - 8 /* Cannot get here */ |