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hppa: Implement __longjmp_chk.
Implement longjmp and the chk variant in C.
This commit is contained in:
Carlos O'Donell
parent
05b227bdae
commit
320194d5b9
@ -1,3 +1,11 @@
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2012-11-18 Carlos O'Donell <carlos@systemhalted.org>
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* ports/sysdeps/hppa/__longjmp.S: Removed.
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* ports/sysdeps/hppa/__longjmp.c: New file.
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* ports/sysdeps/unix/sysv/linux/hppa/____longjmp_chk.c: New file.
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* ports/sysdeps/hppa/bits/setjmp.h: Use union for __jmp_buf.
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* ports/sysdeps/hppa/setjmp.S: Comment byte offsets and padding.
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2012-11-05 Joseph Myers <joseph@codesourcery.com>
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[BZ #14805]
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@ -1,71 +0,0 @@
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/* longjmp for PA-RISC.
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Copyright (C) 1997, 1998 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#define _SETJMP_H
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#define _ASM
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#include <bits/setjmp.h>
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/* __longjmp(jmpbuf, val) */
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.text
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.align 4
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.globl __longjmp
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.export __longjmp, code
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.proc
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.callinfo
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__longjmp:
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/* set return value */
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copy %r25, %r28
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ldw 0(%r26), %r3
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ldw 8(%r26), %r4
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ldw 12(%r26), %r5
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ldw 16(%r26), %r6
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ldw 20(%r26), %r7
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ldw 24(%r26), %r8
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ldw 28(%r26), %r9
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ldw 32(%r26), %r10
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ldw 36(%r26), %r11
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ldw 40(%r26), %r12
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ldw 44(%r26), %r13
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ldw 48(%r26), %r14
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ldw 52(%r26), %r15
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ldw 56(%r26), %r16
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ldw 60(%r26), %r17
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ldw 64(%r26), %r18
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ldw 68(%r26), %r19
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ldw 72(%r26), %r27
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ldw 76(%r26), %r30
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ldw 80(%r26), %rp
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ldo 88(%r26),%r20
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fldds,ma 8(%r20), %fr12
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fldds,ma 8(%r20), %fr13
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fldds,ma 8(%r20), %fr14
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fldds,ma 8(%r20), %fr15
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fldds,ma 8(%r20), %fr16
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fldds,ma 8(%r20), %fr17
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fldds,ma 8(%r20), %fr18
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fldds,ma 8(%r20), %fr19
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fldds,ma 8(%r20), %fr20
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fldds 0(%r20), %fr21
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bv,n %r0(%r2)
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.procend
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83
ports/sysdeps/hppa/__longjmp.c
Normal file
83
ports/sysdeps/hppa/__longjmp.c
Normal file
@ -0,0 +1,83 @@
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/* longjmp for PA-RISC.
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Copyright (C) 1997-2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#include <setjmp.h>
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#include <stdlib.h>
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/* Jump to the position specified by ENV, causing the
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setjmp call there to return VAL, or 1 if VAL is 0. */
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void
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__longjmp (__jmp_buf env, int val)
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{
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/* We must use one of the non-callee saves registers
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for env. */
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register unsigned long r26 asm ("r26") = (unsigned long)&env[0];
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#ifdef CHECK_SP
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CHECK_SP (env[0].__jmp_buf.__sp);
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#endif
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asm volatile(
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/* Set return value. */
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"copy %0, %%r28\n\t"
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/* Load callee saves from r3 to r18. */
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"ldw 0(%1), %%r3\n\t"
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"ldw 8(%1), %%r4\n\t"
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"ldw 12(%1), %%r5\n\t"
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"ldw 16(%1), %%r6\n\t"
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"ldw 20(%1), %%r7\n\t"
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"ldw 24(%1), %%r8\n\t"
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"ldw 28(%1), %%r9\n\t"
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"ldw 32(%1), %%r10\n\t"
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"ldw 36(%1), %%r11\n\t"
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"ldw 40(%1), %%r12\n\t"
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"ldw 44(%1), %%r13\n\t"
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"ldw 48(%1), %%r14\n\t"
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"ldw 52(%1), %%r15\n\t"
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"ldw 56(%1), %%r16\n\t"
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"ldw 60(%1), %%r17\n\t"
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"ldw 64(%1), %%r18\n\t"
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/* Load PIC register. */
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"ldw 68(%1), %%r19\n\t"
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/* Load static link register. */
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"ldw 72(%1), %%r27\n\t"
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/* Load stack pointer. */
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"ldw 76(%1), %%r30\n\t"
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/* Load return pointer. */
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"ldw 80(%1), %%rp\n\t"
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/* Ues a spare caller saves register. */
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"ldo 88(%1),%%r20\n\t"
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/* Load callee saves from fr12 to fr21. */
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"fldds,ma 8(%%r20), %%fr12\n\t"
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"fldds,ma 8(%%r20), %%fr13\n\t"
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"fldds,ma 8(%%r20), %%fr14\n\t"
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"fldds,ma 8(%%r20), %%fr15\n\t"
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"fldds,ma 8(%%r20), %%fr16\n\t"
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"fldds,ma 8(%%r20), %%fr17\n\t"
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"fldds,ma 8(%%r20), %%fr18\n\t"
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"fldds,ma 8(%%r20), %%fr19\n\t"
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"fldds,ma 8(%%r20), %%fr20\n\t"
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"fldds 0(%%r20), %%fr21\n\t"
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/* Jump back to stored return address. */
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"bv,n %%r0(%%r2)\n\t"
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: /* No outputs. */
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: "r" (val == 0 ? 1 : val), "r" (r26)
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: /* No point in clobbers. */ );
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/* Avoid `volatile function does return' warnings. */
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for (;;);
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}
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@ -1,4 +1,4 @@
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/* Copyright (C) 2000, 2005, 2006 Free Software Foundation, Inc.
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/* Copyright (C) 2000-2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -23,13 +23,38 @@
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# error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
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#endif
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/* The previous bits/setjmp.h had __jmp_buf defined as a structure.
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We use an array of 'double' instead, to make writing the assembler
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easier, and to ensure proper alignment. Naturally, user code should
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not depend on either representation. */
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#ifndef _ASM
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typedef double __jmp_buf[21];
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/* The entire jump buffer must be 168 bytes long and laid
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out in exactly as follows for ABI consistency.
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* 20 x 32-bit gprs, with 8-bytes of padding, arranged so:
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- r3 (callee saves)
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- 4 bytes of padding.
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- r4-r18 (callee saves)
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- r19 (PIC register)
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- r27 (static link register)
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- r30 (stcack pointer)
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- r2 (return pointer)
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- 4 bytes of padding.
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* 10 x 64-bit fprs in this order:
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- fr12-fr21 (callee saves)
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Note: We have 8 bytes of free space for future uses. */
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typedef union
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{
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struct __jmp_buf_internal_tag
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{
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int __r3;
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int __pad0;
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int __r4_r18[15];
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int __r19;
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int __r27;
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int __sp;
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int __rp;
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int __pad1;
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double __fr12_fr21[10];
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} __jmp_buf;
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/* Legacy definition. Ensures double alignment for fpsrs. */
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double __align[21];
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} __jmp_buf[1];
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#endif
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#endif /* bits/setjmp.h */
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@ -1,5 +1,5 @@
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/* setjmp for HPPA.
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Copyright (C) 1995, 1996, 1997, 1999 Free Software Foundation, Inc.
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Copyright (C) 1995-2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -31,6 +31,8 @@
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.callinfo
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__sigsetjmp:
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stw %r3, 0(%r26)
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/* This padding exists for unknown historical reasons. */
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/* 4 - 4 bytes of padding. */
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stw %r4, 8(%r26)
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stw %r5, 12(%r26)
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stw %r6, 16(%r26)
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@ -51,7 +53,8 @@ __sigsetjmp:
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stw %r30, 76(%r26)
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stw %rp, 80(%r26)
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/* This padding exists to ensure double alignment for fprs. */
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/* 84 - 4 bytes of padding. */
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ldo 88(%r26),%r1
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fstds,ma %fr12, 8(%r1) /* 88 */
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fstds,ma %fr13, 8(%r1) /* 96 */
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@ -63,6 +66,7 @@ __sigsetjmp:
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fstds,ma %fr19, 8(%r1) /* 144 */
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fstds,ma %fr20, 8(%r1) /* 152 */
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fstds %fr21, 0(%r1) /* 160 */
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/* Total of 168 bytes. */
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b __sigjmp_save
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nop
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.procend
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