/* $NetBSD: _setjmp.S,v 1.20 2005/10/07 17:16:40 tsutsui Exp $ */ /*- * Copyright (c) 1991, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Ralph Campbell. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include /* XXX */ #if defined(LIBC_SCCS) && !defined(lint) ASMSTR("from: @(#)_setjmp.s 8.1 (Berkeley) 6/4/93") ASMSTR("$NetBSD: _setjmp.S,v 1.20 2005/10/07 17:16:40 tsutsui Exp $") #endif /* LIBC_SCCS and not lint */ #ifdef __ABICALLS__ .abicalls #endif /* * C library -- _setjmp, _longjmp * * _longjmp(a,v) * will generate a "return(v)" from * the last call to * _setjmp(a) * by restoring registers from the stack, * The previous signal state is NOT restored. */ .set noreorder LEAF(_setjmp) #ifdef __ABICALLS__ #.set noreorder .cpload t9 #.set reorder #endif REG_PROLOGUE REG_LI v0, 0xACEDBADE # sigcontext magic number REG_S ra, (2 * 4)(a0) # sc_pc = return address REG_S v0, (_OFFSETOF_SC_REGS)(a0) # saved in sc_regs[0] REG_S s0, (_R_S0 * SZREG + _OFFSETOF_SC_REGS)(a0) REG_S s1, (_R_S1 * SZREG + _OFFSETOF_SC_REGS)(a0) REG_S s2, (_R_S2 * SZREG + _OFFSETOF_SC_REGS)(a0) REG_S s3, (_R_S3 * SZREG + _OFFSETOF_SC_REGS)(a0) REG_S s4, (_R_S4 * SZREG + _OFFSETOF_SC_REGS)(a0) REG_S s5, (_R_S5 * SZREG + _OFFSETOF_SC_REGS)(a0) REG_S s6, (_R_S6 * SZREG + _OFFSETOF_SC_REGS)(a0) REG_S s7, (_R_S7 * SZREG + _OFFSETOF_SC_REGS)(a0) REG_S sp, (_R_SP * SZREG + _OFFSETOF_SC_REGS)(a0) REG_S s8, (_R_S8 * SZREG + _OFFSETOF_SC_REGS)(a0) cfc1 v0, $31 # too bad cant check if FP used swc1 $f20, (20 * 4 + _OFFSETOF_SC_FPREGS)(a0) swc1 $f21, (21 * 4 + _OFFSETOF_SC_FPREGS)(a0) swc1 $f22, (22 * 4 + _OFFSETOF_SC_FPREGS)(a0) swc1 $f23, (23 * 4 + _OFFSETOF_SC_FPREGS)(a0) swc1 $f24, (24 * 4 + _OFFSETOF_SC_FPREGS)(a0) swc1 $f25, (25 * 4 + _OFFSETOF_SC_FPREGS)(a0) swc1 $f26, (26 * 4 + _OFFSETOF_SC_FPREGS)(a0) swc1 $f27, (27 * 4 + _OFFSETOF_SC_FPREGS)(a0) swc1 $f28, (28 * 4 + _OFFSETOF_SC_FPREGS)(a0) swc1 $f29, (29 * 4 + _OFFSETOF_SC_FPREGS)(a0) swc1 $f30, (30 * 4 + _OFFSETOF_SC_FPREGS)(a0) swc1 $f31, (31 * 4 + _OFFSETOF_SC_FPREGS)(a0) sw v0, (32 * 4 + _OFFSETOF_SC_FPREGS)(a0) REG_EPILOGUE j ra move v0, zero END(_setjmp) LEAF(_longjmp) #ifdef __ABICALLS__ .set noreorder .cpload t9 .set reorder subu sp, sp, 32 .cprestore 16 .set noreorder #endif REG_PROLOGUE REG_L v0, (_OFFSETOF_SC_REGS)(a0) # get magic number REG_L ra, (2 * 4)(a0) REG_LI t0, 0xACEDBADE bne v0, t0, botch # jump if error addu sp, sp, 32 # does not matter, sanity REG_L s0, (_R_S0 * SZREG + _OFFSETOF_SC_REGS)(a0) REG_L s1, (_R_S1 * SZREG + _OFFSETOF_SC_REGS)(a0) REG_L s2, (_R_S2 * SZREG + _OFFSETOF_SC_REGS)(a0) REG_L s3, (_R_S3 * SZREG + _OFFSETOF_SC_REGS)(a0) REG_L s4, (_R_S4 * SZREG + _OFFSETOF_SC_REGS)(a0) REG_L s5, (_R_S5 * SZREG + _OFFSETOF_SC_REGS)(a0) REG_L s6, (_R_S6 * SZREG + _OFFSETOF_SC_REGS)(a0) REG_L s7, (_R_S7 * SZREG + _OFFSETOF_SC_REGS)(a0) lw v0, (32 * 4 + _OFFSETOF_SC_FPREGS)(a0) # get fpu status REG_L sp, (_R_SP * SZREG + _OFFSETOF_SC_REGS)(a0) REG_L s8, (_R_S8 * SZREG + _OFFSETOF_SC_REGS)(a0) ctc1 v0, $31 lwc1 $f20, (20 * 4 + _OFFSETOF_SC_FPREGS)(a0) lwc1 $f21, (21 * 4 + _OFFSETOF_SC_FPREGS)(a0) lwc1 $f22, (22 * 4 + _OFFSETOF_SC_FPREGS)(a0) lwc1 $f23, (23 * 4 + _OFFSETOF_SC_FPREGS)(a0) lwc1 $f24, (24 * 4 + _OFFSETOF_SC_FPREGS)(a0) lwc1 $f25, (25 * 4 + _OFFSETOF_SC_FPREGS)(a0) lwc1 $f26, (26 * 4 + _OFFSETOF_SC_FPREGS)(a0) lwc1 $f27, (27 * 4 + _OFFSETOF_SC_FPREGS)(a0) lwc1 $f28, (28 * 4 + _OFFSETOF_SC_FPREGS)(a0) lwc1 $f29, (29 * 4 + _OFFSETOF_SC_FPREGS)(a0) lwc1 $f30, (30 * 4 + _OFFSETOF_SC_FPREGS)(a0) lwc1 $f31, (31 * 4 + _OFFSETOF_SC_FPREGS)(a0) j ra move v0, a1 REG_EPILOGUE botch: jal _C_LABEL(longjmperror) nop jal _C_LABEL(abort) nop END(_longjmp)