diff options
Diffstat (limited to 'lib/libc/mips/gen/setjmp.S')
| -rw-r--r-- | lib/libc/mips/gen/setjmp.S | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/lib/libc/mips/gen/setjmp.S b/lib/libc/mips/gen/setjmp.S deleted file mode 100644 index 0abfed8..0000000 --- a/lib/libc/mips/gen/setjmp.S +++ /dev/null @@ -1,128 +0,0 @@ -/*- - * 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. - */ - -#include <sys/syscall.h> -#include <machine/asm.h> -#include <machine/regnum.h> - -#if defined(LIBC_SCCS) - .text - .asciz "$OpenBSD: setjmp.S,v 1.6 1997/07/23 20:55:25 kstailey Exp $" -#endif /* LIBC_SCCS */ - -/* - * 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, - * and a struct sigcontext, see <signal.h> - */ - -#define SETJMP_FRAME_SIZE (STAND_FRAME_SIZE + 12) - -NON_LEAF(setjmp, SETJMP_FRAME_SIZE, ra) - .mask 0x80000000, (STAND_RA_OFFSET - STAND_FRAME_SIZE) - subu sp, sp, SETJMP_FRAME_SIZE # allocate stack frame -#ifdef ABICALLS - .cprestore 16 -#endif - .set reorder - sw ra, STAND_RA_OFFSET(sp) # save state - sw a0, SETJMP_FRAME_SIZE(sp) - move a0, zero # get current signal mask - jal _C_LABEL(sigblock) - lw v1, SETJMP_FRAME_SIZE(sp) # v1 = jmpbuf - sw v0, (1 * 4)(v1) # save sc_mask = sigblock(0) - move a0, zero - addu a1, sp, STAND_FRAME_SIZE # pointer to struct sigaltstack - jal _C_LABEL(sigaltstack) - lw a0, SETJMP_FRAME_SIZE(sp) # restore jmpbuf - lw v1, STAND_FRAME_SIZE+8(sp) # get old ss_onstack - and v1, v1, 1 # extract onstack flag - sw v1, 0(a0) # save it in sc_onstack - lw ra, STAND_RA_OFFSET(sp) - addu sp, sp, SETJMP_FRAME_SIZE - blt v0, zero, botch # check for sigstack() error - sw ra, (2 * 4)(a0) # sc_pc = return address - li v0, 0xACEDBADE # sigcontext magic number - sw v0, ((ZERO + 3) * 4)(a0) # saved in sc_regs[0] - sw s0, ((S0 + 3) * 4)(a0) - sw s1, ((S1 + 3) * 4)(a0) - sw s2, ((S2 + 3) * 4)(a0) - sw s3, ((S3 + 3) * 4)(a0) - sw s4, ((S4 + 3) * 4)(a0) - sw s5, ((S5 + 3) * 4)(a0) - sw s6, ((S6 + 3) * 4)(a0) - sw s7, ((S7 + 3) * 4)(a0) - sw gp, ((GP + 3) * 4)(a0) - sw sp, ((SP + 3) * 4)(a0) - sw s8, ((S8 + 3) * 4)(a0) - li v0, 1 # be nice if we could tell - sw v0, (37 * 4)(a0) # sc_fpused = 1 - cfc1 v0, $31 - swc1 $f20, ((20 + 38) * 4)(a0) - swc1 $f21, ((21 + 38) * 4)(a0) - swc1 $f22, ((22 + 38) * 4)(a0) - swc1 $f23, ((23 + 38) * 4)(a0) - swc1 $f24, ((24 + 38) * 4)(a0) - swc1 $f25, ((25 + 38) * 4)(a0) - swc1 $f26, ((26 + 38) * 4)(a0) - swc1 $f27, ((27 + 38) * 4)(a0) - swc1 $f28, ((28 + 38) * 4)(a0) - swc1 $f29, ((29 + 38) * 4)(a0) - swc1 $f30, ((30 + 38) * 4)(a0) - swc1 $f31, ((31 + 38) * 4)(a0) - sw v0, ((32 + 38) * 4)(a0) - move v0, zero - j ra -END(setjmp) - -LEAF(longjmp) -#ifdef ABICALLS - subu sp, sp, 32 - .cprestore 16 -#endif - .set reorder - sw a1, ((V0 + 3) * 4)(a0) # save return value in sc_regs[V0] - li v0, SYS_sigreturn - syscall -botch: - jal _C_LABEL(longjmperror) - jal _C_LABEL(abort) -END(longjmp) |
