_setjmp.S revision 250020
1263409Smarcel/*- 2263409Smarcel * Copyright (c) 1991, 1993 3263409Smarcel * The Regents of the University of California. All rights reserved. 4263409Smarcel * 5263409Smarcel * This code is derived from software contributed to Berkeley by 6263409Smarcel * Ralph Campbell. 7263409Smarcel * 8263409Smarcel * Redistribution and use in source and binary forms, with or without 9263409Smarcel * modification, are permitted provided that the following conditions 10263409Smarcel * are met: 11263409Smarcel * 1. Redistributions of source code must retain the above copyright 12263409Smarcel * notice, this list of conditions and the following disclaimer. 13263409Smarcel * 2. Redistributions in binary form must reproduce the above copyright 14263409Smarcel * notice, this list of conditions and the following disclaimer in the 15263409Smarcel * documentation and/or other materials provided with the distribution. 16263409Smarcel * 3. All advertising materials mentioning features or use of this software 17263409Smarcel * must display the following acknowledgement: 18263409Smarcel * This product includes software developed by the University of 19263409Smarcel * California, Berkeley and its contributors. 20263409Smarcel * 4. Neither the name of the University nor the names of its contributors 21263409Smarcel * may be used to endorse or promote products derived from this software 22263409Smarcel * without specific prior written permission. 23263409Smarcel * 24263409Smarcel * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25263409Smarcel * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26263409Smarcel * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27263409Smarcel * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28263409Smarcel * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29263409Smarcel * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30263409Smarcel * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31263442Smarcel * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32263674Smarcel * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33263442Smarcel * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34263409Smarcel * SUCH DAMAGE. 35263674Smarcel * 36263674Smarcel * $FreeBSD: head/lib/libstand/mips/_setjmp.S 250020 2013-04-28 14:40:29Z rwatson $ 37263409Smarcel */ 38263409Smarcel 39263409Smarcel#include <machine/regnum.h> 40263409Smarcel#include <machine/asm.h> 41263409Smarcel 42263674Smarcel#if 0 43263674Smarcel#if defined(LIBC_SCCS) 44263487Smarcel .text 45263409Smarcel .asciz "$OpenBSD: _setjmp.S,v 1.6 1996/09/23 21:27:53 imp Exp $" 46263409Smarcel#endif /* LIBC_SCCS */ 47263440Smarcel#endif 48263653Smarcel 49263409Smarcel/* 50263440Smarcel * C library -- _setjmp, _longjmp 51263409Smarcel * 52263440Smarcel * _longjmp(a,v) 53263440Smarcel * will generate a "return(v)" from 54263409Smarcel * the last call to 55263409Smarcel * _setjmp(a) 56263674Smarcel * by restoring registers from the stack, 57263674Smarcel * The previous signal state is NOT restored. 58263674Smarcel */ 59263674Smarcel 60263674SmarcelLEAF(_setjmp) 61263674Smarcel .set noreorder 62263674Smarcel REG_LI v0, 0xACEDBADE # sigcontext magic number 63263674Smarcel REG_S ra, (2 * SZREG)(a0) # sc_pc = return address 64263674Smarcel REG_S v0, (3 * SZREG)(a0) # saved in sc_regs[0] 65263442Smarcel REG_S s0, ((S0 + 3) * SZREG)(a0) 66263674Smarcel REG_S s1, ((S1 + 3) * SZREG)(a0) 67263442Smarcel REG_S s2, ((S2 + 3) * SZREG)(a0) 68263674Smarcel REG_S s3, ((S3 + 3) * SZREG)(a0) 69263674Smarcel REG_S s4, ((S4 + 3) * SZREG)(a0) 70263674Smarcel REG_S s5, ((S5 + 3) * SZREG)(a0) 71263843Smarcel REG_S s6, ((S6 + 3) * SZREG)(a0) 72263674Smarcel REG_S s7, ((S7 + 3) * SZREG)(a0) 73263674Smarcel REG_S sp, ((SP + 3) * SZREG)(a0) 74263674Smarcel REG_S s8, ((S8 + 3) * SZREG)(a0) 75263674Smarcel j ra 76263674Smarcel move v0, zero 77263674SmarcelEND(_setjmp) 78263674Smarcel 79263674SmarcelLEAF(_longjmp) 80263674Smarcel#ifdef ABICALLS 81263674Smarcel subu sp, sp, 32 82263843Smarcel .cprestore 16 83263674Smarcel#endif 84263843Smarcel .set noreorder 85263674Smarcel REG_L v0, (3 * SZREG)(a0) # get magic number 86263674Smarcel REG_L ra, (2 * SZREG)(a0) 87263674Smarcel bne v0, 0xACEDBADE, botch # jump if error 88263843Smarcel 89263674Smarcel addu sp, sp, 32 # does not matter, sanity 90263674Smarcel REG_L s0, ((S0 + 3) * SZREG)(a0) 91263674Smarcel REG_L s1, ((S1 + 3) * SZREG)(a0) 92263674Smarcel REG_L s2, ((S2 + 3) * SZREG)(a0) 93263674Smarcel REG_L s3, ((S3 + 3) * SZREG)(a0) 94263674Smarcel REG_L s4, ((S4 + 3) * SZREG)(a0) 95263843Smarcel REG_L s5, ((S5 + 3) * SZREG)(a0) 96263674Smarcel REG_L s6, ((S6 + 3) * SZREG)(a0) 97263674Smarcel REG_L s7, ((S7 + 3) * SZREG)(a0) 98263674Smarcel REG_L sp, ((SP + 3) * SZREG)(a0) 99263843Smarcel REG_L s8, ((S8 + 3) * SZREG)(a0) 100263843Smarcel 101263674Smarcel j ra 102263674Smarcel move v0, a1 103263674Smarcelbotch: 104263674Smarcel jal _C_LABEL(longjmperror) 105263674Smarcel nop 106263674Smarcel jal _C_LABEL(abort) 107263674Smarcel nop 108263674SmarcelEND(_longjmp) 109263674Smarcel