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88 lines
2.6 KiB
C
88 lines
2.6 KiB
C
/* longjmp for PA-RISC.
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Copyright (C) 1997-2017 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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#ifdef CHECK_SP
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CHECK_SP (env[0].__jmp_buf.__sp);
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#endif
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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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register unsigned long r25 asm ("r25") = (unsigned long)(val == 0 ? 1 : val);
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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),%%r25\n\t"
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/* Load callee saves from fr12 to fr21. */
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"fldds,ma 8(%%r25), %%fr12\n\t"
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"fldds,ma 8(%%r25), %%fr13\n\t"
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"fldds,ma 8(%%r25), %%fr14\n\t"
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"fldds,ma 8(%%r25), %%fr15\n\t"
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"fldds,ma 8(%%r25), %%fr16\n\t"
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"fldds,ma 8(%%r25), %%fr17\n\t"
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"fldds,ma 8(%%r25), %%fr18\n\t"
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"fldds,ma 8(%%r25), %%fr19\n\t"
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"fldds,ma 8(%%r25), %%fr20\n\t"
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"fldds 0(%%r25), %%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" (r25), "r" (r26)
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: /* No point in clobbers. */ );
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}
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/* Avoid `volatile function does return' warnings. */
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for (;;);
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}
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