| _setjmp.S (251392) | _setjmp.S (251514) |
|---|---|
| 1/* $NetBSD: _setjmp.S,v 1.12 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 1.12 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__ | 39#if defined(__ARM_EABI__) && !defined(_STANDALONE) |
| 40 .fpu vfp 41#endif 42 43#include <machine/asm.h> 44#include <machine/setjmp.h> 45 | 40 .fpu vfp 41#endif 42 43#include <machine/asm.h> 44#include <machine/setjmp.h> 45 |
| 46__FBSDID("$FreeBSD: head/lib/libc/arm/gen/_setjmp.S 251392 2013-06-04 19:47:26Z andrew $"); | 46__FBSDID("$FreeBSD: head/lib/libc/arm/gen/_setjmp.S 251514 2013-06-07 22:01:06Z andrew $"); |
| 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. 55 * The previous signal state is NOT restored. 56 * 57 * Note: r0 is the return value 58 * r1-r3,ip are scratch registers in functions 59 */ 60 61ENTRY(_setjmp) 62 ldr r1, .L_setjmp_magic 63 | 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. 55 * The previous signal state is NOT restored. 56 * 57 * Note: r0 is the return value 58 * r1-r3,ip are scratch registers in functions 59 */ 60 61ENTRY(_setjmp) 62 ldr r1, .L_setjmp_magic 63 |
| 64#if defined(__ARM_EABI__) && !defined(_STANDALONE) 65 ldr r2, .Lfpu_present 66#ifdef PIC 67 GOT_INIT(r3, .L_setjmp_got, .L_setjmp_gotinit) 68 ldr r2, [r2, r3] 69#else 70 ldr r2, [r2] 71#endif 72 teq r2, #0 /* do we have a FPU? */ 73 beq 1f /* no, don't save VFP registers */ 74 75 orr r1, r1, #(_JB_MAGIC__SETJMP ^ _JB_MAGIC__SETJMP_VFP) 76 /* change magic to VFP magic */ 77 add r2, r0, #(_JB_REG_D8 * 4) 78 vstmia r2, {d8-d15} 79 vmrs r2, fpscr 80 str r2, [r0, #(_JB_REG_FPSCR * 4)] 811: 82#endif /* __ARM_EABI__ */ 83 |
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| 64 str r1, [r0] 65 66 add r0, r0, #(_JB_REG_R4 * 4) 67 /* Store integer registers */ 68 stmia r0, {r4-r14} 69 70 mov r0, #0x00000000 71 RET 72 73.L_setjmp_magic: 74 .word _JB_MAGIC__SETJMP | 84 str r1, [r0] 85 86 add r0, r0, #(_JB_REG_R4 * 4) 87 /* Store integer registers */ 88 stmia r0, {r4-r14} 89 90 mov r0, #0x00000000 91 RET 92 93.L_setjmp_magic: 94 .word _JB_MAGIC__SETJMP |
| 95#if defined(__ARM_EABI__) && !defined(_STANDALONE) 96 GOT_INITSYM(.L_setjmp_got, .L_setjmp_gotinit) 97.Lfpu_present: 98 .word PIC_SYM(_libc_arm_fpu_present, GOTOFF) 99#endif /* __ARM_EABI__ */ |
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| 75 76WEAK_ALIAS(___longjmp, _longjmp) 77ENTRY(_longjmp) 78 ldr r2, [r0] /* get magic from jmp_buf */ | 100 101WEAK_ALIAS(___longjmp, _longjmp) 102ENTRY(_longjmp) 103 ldr r2, [r0] /* get magic from jmp_buf */ |
| 104 bic r3, r2, #(_JB_MAGIC__SETJMP ^ _JB_MAGIC__SETJMP_VFP) 105 /* ignore VFP-ness of magic */ |
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| 79 ldr ip, .L_setjmp_magic /* load magic */ | 106 ldr ip, .L_setjmp_magic /* load magic */ |
| 80 teq ip, r2 /* magic correct? */ | 107 teq ip, r3 /* magic correct? */ |
| 81 bne botch /* no, botch */ 82 | 108 bne botch /* no, botch */ 109 |
| 110#if defined(__ARM_EABI__) && !defined(_STANDALONE) 111 teq r3, r2 /* did magic change? */ 112 beq 1f /* no, don't restore VFP */ 113 add ip, r0, #(_JB_REG_D8 * 4) 114 vldmia ip, {d8-d15} 115 ldr ip, [r0, #(_JB_REG_FPSCR * 4)] 116 vmsr fpscr, ip 1171: 118#endif /* __ARM_EABI__ */ 119 |
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| 83 add r0, r0, #(_JB_REG_R4 * 4) 84 /* Restore integer registers */ 85 ldmia r0, {r4-r14} 86 87 /* Validate sp and r14 */ 88 teq sp, #0 89 teqne r14, #0 90 beq botch --- 15 unchanged lines hidden --- | 120 add r0, r0, #(_JB_REG_R4 * 4) 121 /* Restore integer registers */ 122 ldmia r0, {r4-r14} 123 124 /* Validate sp and r14 */ 125 teq sp, #0 126 teqne r14, #0 127 beq botch --- 15 unchanged lines hidden --- |