003 File Manager
Current Path:
/usr/src/stand/libsa/mips
usr
/
src
/
stand
/
libsa
/
mips
/
📁
..
📄
_setjmp.S
(3.57 KB)
Editing: _setjmp.S
/*- * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. 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. * * $FreeBSD$ */ #include <machine/asm.h> #if 0 #if defined(LIBC_SCCS) .text .asciz "$OpenBSD: _setjmp.S,v 1.6 1996/09/23 21:27:53 imp Exp $" #endif /* LIBC_SCCS */ #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. */ LEAF(_setjmp) .set noreorder REG_LI v0, _JB_MAGIC__SETJMP # sigcontext magic number REG_S v0, (_JB_MAGIC * SZREG)(a0) # saved in sc_regs[0] REG_S ra, (_JB_REG_RA * SZREG)(a0) # sc_pc = return address REG_S s0, (_JB_REG_S0 * SZREG)(a0) REG_S s1, (_JB_REG_S1 * SZREG)(a0) REG_S s2, (_JB_REG_S2 * SZREG)(a0) REG_S s3, (_JB_REG_S3 * SZREG)(a0) REG_S s4, (_JB_REG_S4 * SZREG)(a0) REG_S s5, (_JB_REG_S5 * SZREG)(a0) REG_S s6, (_JB_REG_S6 * SZREG)(a0) REG_S s7, (_JB_REG_S7 * SZREG)(a0) REG_S sp, (_JB_REG_SP * SZREG)(a0) REG_S s8, (_JB_REG_S8 * SZREG)(a0) j ra move v0, zero END(_setjmp) LEAF(_longjmp) #ifdef ABICALLS subu sp, sp, 32 .cprestore 16 #endif .set noreorder REG_L v0, (_JB_MAGIC * SZREG)(a0) # get magic number REG_L ra, (_JB_REG_RA * SZREG)(a0) bne v0, _JB_MAGIC__SETJMP, botch # jump if error addu sp, sp, 32 # does not matter, sanity REG_L s0, (_JB_REG_S0 * SZREG)(a0) REG_L s1, (_JB_REG_S1 * SZREG)(a0) REG_L s2, (_JB_REG_S2 * SZREG)(a0) REG_L s3, (_JB_REG_S3 * SZREG)(a0) REG_L s4, (_JB_REG_S4 * SZREG)(a0) REG_L s5, (_JB_REG_S5 * SZREG)(a0) REG_L s6, (_JB_REG_S6 * SZREG)(a0) REG_L s7, (_JB_REG_S7 * SZREG)(a0) REG_L sp, (_JB_REG_SP * SZREG)(a0) REG_L s8, (_JB_REG_S8 * SZREG)(a0) j ra move v0, a1 botch: jal _C_LABEL(longjmperror) nop jal _C_LABEL(abort) nop END(_longjmp)
Upload File
Create Folder