diff options
Diffstat (limited to 'lib/libc/powerpcspe/gen/setjmp.S')
| -rw-r--r-- | lib/libc/powerpcspe/gen/setjmp.S | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/lib/libc/powerpcspe/gen/setjmp.S b/lib/libc/powerpcspe/gen/setjmp.S new file mode 100644 index 000000000000..1bd3edcf5239 --- /dev/null +++ b/lib/libc/powerpcspe/gen/setjmp.S @@ -0,0 +1,136 @@ +/*- + * Copyright (c) 2016 Justin Hibbits + * All rights reserved. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + */ +/* $NetBSD: setjmp.S,v 1.3 1998/10/03 12:30:38 tsubai Exp $ */ + +#include <machine/asm.h> +#include <sys/syscall.h> + +/* + * C library -- setjmp, longjmp + * + * longjmp(a,v) + * will generate a "return(v?v:1)" from the last call to + * setjmp(a) + * by restoring registers from the stack. + * The previous signal state is restored. + * + * jmpbuf layout: + * +------------+ + * | unused | + * +------------+ + * | sig state | + * | | + * | (4 words) | + * | | + * +------------+ + * | saved regs | + * | ... | + */ + +ENTRY(setjmp) + mr %r6,%r3 + li %r3,1 /* SIG_BLOCK, but doesn't matter */ + /* since set == NULL */ + li %r4,0 /* set = NULL */ + mr %r5,%r6 /* &oset */ + addi %r5,%r5,4 + li %r0, SYS_sigprocmask /*sigprocmask(SIG_BLOCK, NULL, &oset)*/ + sc /*assume no error XXX */ + mflr %r11 /* r11 <- link reg */ + mfcr %r12 /* r12 <- condition reg */ + mr %r10,%r1 /* r10 <- stackptr */ + mr %r9,%r2 /* r9 <- global ptr */ + evstdd %r9,24+0*8(%r6) + evstdd %r10,24+1*8(%r6) + evstdd %r11,24+2*8(%r6) + evstdd %r12,24+3*8(%r6) + evstdd %r13,24+4*8(%r6) + evstdd %r14,24+5*8(%r6) + evstdd %r15,24+6*8(%r6) + evstdd %r16,24+7*8(%r6) + evstdd %r17,24+8*8(%r6) + evstdd %r18,24+9*8(%r6) + evstdd %r19,24+10*8(%r6) + evstdd %r20,24+11*8(%r6) + evstdd %r21,24+12*8(%r6) + evstdd %r22,24+13*8(%r6) + evstdd %r23,24+14*8(%r6) + evstdd %r24,24+15*8(%r6) + evstdd %r25,24+16*8(%r6) + evstdd %r26,24+17*8(%r6) + evstdd %r27,24+18*8(%r6) + evstdd %r28,24+19*8(%r6) + evstdd %r29,24+20*8(%r6) + evstdd %r30,24+21*8(%r6) + evstdd %r31,24+22*8(%r6) + + li %r3,0 /* return (0) */ + blr +END(setjmp) + + WEAK_REFERENCE(CNAME(__longjmp), longjmp) +ENTRY(__longjmp) + evldd %r9,24+0*8(%r3) + evldd %r10,24+1*8(%r3) + evldd %r11,24+2*8(%r3) + evldd %r12,24+3*8(%r3) + evldd %r13,24+4*8(%r3) + evldd %r14,24+5*8(%r3) + evldd %r15,24+6*8(%r3) + evldd %r16,24+7*8(%r3) + evldd %r17,24+8*8(%r3) + evldd %r18,24+9*8(%r3) + evldd %r19,24+10*8(%r3) + evldd %r20,24+11*8(%r3) + evldd %r21,24+12*8(%r3) + evldd %r22,24+13*8(%r3) + evldd %r23,24+14*8(%r3) + evldd %r24,24+15*8(%r3) + evldd %r25,24+16*8(%r3) + evldd %r26,24+17*8(%r3) + evldd %r27,24+18*8(%r3) + evldd %r28,24+19*8(%r3) + evldd %r29,24+20*8(%r3) + evldd %r30,24+21*8(%r3) + evldd %r31,24+22*8(%r3) + + mr %r6,%r4 /* save val param */ + mtlr %r11 /* r11 -> link reg */ + mtcr %r12 /* r12 -> condition reg */ + mr %r1,%r10 /* r10 -> stackptr */ + mr %r4,%r3 + li %r3,3 /* SIG_SETMASK */ + addi %r4,%r4,4 /* &set */ + li %r5,0 /* oset = NULL */ + li %r0,SYS_sigprocmask /* sigprocmask(SIG_SET, &set, NULL) */ + sc /* assume no error XXX */ + or. %r3,%r6,%r6 + bnelr + li %r3,1 + blr +END(__longjmp) + + .section .note.GNU-stack,"",%progbits |