| _setjmp.S (178580) | _setjmp.S (209231) |
|---|---|
| 1/* $NetBSD: _setjmp.S,v 1.20 2005/10/07 17:16:40 tsutsui Exp $ */ | 1/* $NetBSD: _setjmp.S,v 1.20.34.5 2010/02/03 23:46:47 matt Exp $ */ |
| 2 3/*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell. 9 * --- 18 unchanged lines hidden (view full) --- 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <machine/asm.h> | 2 3/*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell. 9 * --- 18 unchanged lines hidden (view full) --- 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <machine/asm.h> |
| 36__FBSDID("$FreeBSD: head/lib/libc/mips/gen/_setjmp.S 178580 2008-04-26 12:08:02Z imp $"); | 36__FBSDID("$FreeBSD: head/lib/libc/mips/gen/_setjmp.S 209231 2010-06-16 12:55:14Z jchandra $"); |
| 37#include <machine/regnum.h> 38 | 37#include <machine/regnum.h> 38 |
| 39#include "SYS.h" 40 |
|
| 39#if defined(LIBC_SCCS) && !defined(lint) | 41#if defined(LIBC_SCCS) && !defined(lint) |
| 40 ASMSTR("from: @(#)_setjmp.s 8.1 (Berkeley) 6/4/93") 41 ASMSTR("$NetBSD: _setjmp.S,v 1.20 2005/10/07 17:16:40 tsutsui Exp $") | 42#if 0 43 RCSID("from: @(#)_setjmp.s 8.1 (Berkeley) 6/4/93") 44#else 45 RCSID("$NetBSD: _setjmp.S,v 1.20.34.5 2010/02/03 23:46:47 matt Exp $") 46#endif |
| 42#endif /* LIBC_SCCS and not lint */ 43 | 47#endif /* LIBC_SCCS and not lint */ 48 |
| 44#ifdef __ABICALLS__ 45 .abicalls 46#endif 47 | |
| 48/* 49 * C library -- _setjmp, _longjmp 50 * 51 * _longjmp(a,v) 52 * will generate a "return(v)" from 53 * the last call to 54 * _setjmp(a) 55 * by restoring registers from the stack, 56 * The previous signal state is NOT restored. 57 */ 58 | 49/* 50 * C library -- _setjmp, _longjmp 51 * 52 * _longjmp(a,v) 53 * will generate a "return(v)" from 54 * the last call to 55 * _setjmp(a) 56 * by restoring registers from the stack, 57 * The previous signal state is NOT restored. 58 */ 59 |
| 60 .set noreorder |
|
| 59 60LEAF(_setjmp) | 61 62LEAF(_setjmp) |
| 61#ifdef __ABICALLS__ 62 .set noreorder 63 .cpload t9 64 subu sp, sp, CALLFRAME_SIZ # allocate stack frame 65 .cprestore 16 | 63 REG_PROLOGUE 64 REG_LI v0, _JB_MAGIC__SETJMP 65 REG_S v0, (_JB_MAGIC * SZREG)(a0) 66 REG_S ra, (_JB_REG_RA * SZREG)(a0) 67 REG_S s0, (_JB_REG_S0 * SZREG)(a0) 68 REG_S s1, (_JB_REG_S1 * SZREG)(a0) 69 REG_S s2, (_JB_REG_S2 * SZREG)(a0) 70 REG_S s3, (_JB_REG_S3 * SZREG)(a0) 71 REG_S s4, (_JB_REG_S4 * SZREG)(a0) 72 REG_S s5, (_JB_REG_S5 * SZREG)(a0) 73 REG_S s6, (_JB_REG_S6 * SZREG)(a0) 74 REG_S s7, (_JB_REG_S7 * SZREG)(a0) 75 REG_S s8, (_JB_REG_S8 * SZREG)(a0) 76#if defined(__mips_n32) || defined(__mips_n64) 77 REG_S gp, (_JB_REG_GP * SZREG)(a0) # newabi gp is callee-saved |
| 66#endif | 78#endif |
| 67 li v0, _JB_MAGIC__SETJMP 68 sw v0, (_JB_MAGIC * SZREG)(a0) 69 sw ra, (_JB_REG_RA * SZREG)(a0) 70 sw s0, (_JB_REG_S0 * SZREG)(a0) 71 sw s1, (_JB_REG_S1 * SZREG)(a0) 72 sw s2, (_JB_REG_S2 * SZREG)(a0) 73 sw s3, (_JB_REG_S3 * SZREG)(a0) 74 sw s4, (_JB_REG_S4 * SZREG)(a0) 75 sw s5, (_JB_REG_S5 * SZREG)(a0) 76 sw s6, (_JB_REG_S6 * SZREG)(a0) 77 sw s7, (_JB_REG_S7 * SZREG)(a0) 78 sw s8, (_JB_REG_S8 * SZREG)(a0) 79#ifdef __ABICALLS__ 80 addu sp, sp, CALLFRAME_SIZ # un-allocate the stack frame 81#endif 82 sw sp, (_JB_REG_SP * SZREG)(a0) | 79 REG_S sp, (_JB_REG_SP * SZREG)(a0) 80 REG_EPILOGUE 81 |
| 83 j ra 84 move v0, zero 85END(_setjmp) 86 87LEAF(_longjmp) | 82 j ra 83 move v0, zero 84END(_setjmp) 85 86LEAF(_longjmp) |
| 88#ifdef __ABICALLS__ 89 .set noreorder 90 .cpload t9 91 subu sp, sp, CALLFRAME_SIZ # allocate stack frame 92 .cprestore 16 93#endif 94 lw v0, (_JB_MAGIC * SZREG)(a0) 95 lw ra, (_JB_REG_RA * SZREG)(a0) 96 li t0, _JB_MAGIC__SETJMP 97 bne v0, t0, botch # jump if error 98 lw s0, (_JB_REG_S0 * SZREG)(a0) 99 lw s1, (_JB_REG_S1 * SZREG)(a0) 100 lw s2, (_JB_REG_S2 * SZREG)(a0) 101 lw s3, (_JB_REG_S3 * SZREG)(a0) 102 lw s4, (_JB_REG_S4 * SZREG)(a0) 103 lw s5, (_JB_REG_S5 * SZREG)(a0) 104 lw s6, (_JB_REG_S6 * SZREG)(a0) 105 lw s7, (_JB_REG_S7 * SZREG)(a0) 106 lw sp, (_JB_REG_SP * SZREG)(a0) 107 lw s8, (_JB_REG_S8 * SZREG)(a0) | 87 PIC_PROLOGUE(_longjmp) 88 PTR_SUBU sp, sp, CALLFRAME_SIZ 89 SAVE_GP(CALLFRAME_GP) |
| 108 | 90 |
| 91 REG_PROLOGUE 92 REG_L v0, (_JB_MAGIC * SZREG)(a0) # get magic number 93 REG_L ra, (_JB_REG_RA * SZREG)(a0) 94 REG_LI t0, _JB_MAGIC__SETJMP 95 bne v0, t0, botch # jump if error 96 PTR_ADDU sp, sp, CALLFRAME_SIZ # does not matter, sanity 97 REG_L s0, (_JB_REG_S0 * SZREG)(a0) 98 REG_L s1, (_JB_REG_S1 * SZREG)(a0) 99 REG_L s2, (_JB_REG_S2 * SZREG)(a0) 100 REG_L s3, (_JB_REG_S3 * SZREG)(a0) 101 REG_L s4, (_JB_REG_S4 * SZREG)(a0) 102 REG_L s5, (_JB_REG_S5 * SZREG)(a0) 103 REG_L s6, (_JB_REG_S6 * SZREG)(a0) 104 REG_L s7, (_JB_REG_S7 * SZREG)(a0) 105#if defined(__mips_n32) || defined(__mips_n64) 106 REG_L gp, (_JB_REG_GP * SZREG)(a0) 107#endif 108 REG_L sp, (_JB_REG_SP * SZREG)(a0) 109 REG_L s8, (_JB_REG_S8 * SZREG)(a0) 110 111 REG_EPILOGUE 112 move v0, a1 # get return value in 1st arg |
|
| 109 j ra | 113 j ra |
| 110 move v0, a1 | 114 nop |
| 111 112botch: | 115 116botch: |
| 113 jal _C_LABEL(longjmperror) | 117 /* 118 * We know we aren't returning so we don't care about restoring 119 * our caller's GP. 120 */ 121 PTR_LA t9, _C_LABEL(longjmperror) 122 jalr t9 |
| 114 nop | 123 nop |
| 115 jal _C_LABEL(abort) 116 nop | 124 125 PIC_TAILCALL(abort) |
| 117END(_longjmp) | 126END(_longjmp) |