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Diffstat (limited to 'sysdeps/hppa/__longjmp.c')
| -rw-r--r-- | sysdeps/hppa/__longjmp.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/sysdeps/hppa/__longjmp.c b/sysdeps/hppa/__longjmp.c new file mode 100644 index 0000000000..cc3d4bda95 --- /dev/null +++ b/sysdeps/hppa/__longjmp.c @@ -0,0 +1,84 @@ +/* longjmp for PA-RISC. + Copyright (C) 1997-2015 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <http://www.gnu.org/licenses/>. */ + +#include <setjmp.h> +#include <stdlib.h> + +/* Jump to the position specified by ENV, causing the + setjmp call there to return VAL, or 1 if VAL is 0. */ +void +__longjmp (__jmp_buf env, int val) +{ + /* We must use one of the non-callee saves registers + for env. */ + register unsigned long r26 asm ("r26") = (unsigned long)&env[0]; + register unsigned long r25 asm ("r25") = (unsigned long)(val == 0 ? 1 : val); + +#ifdef CHECK_SP + CHECK_SP (env[0].__jmp_buf.__sp); +#endif + + asm volatile( + /* Set return value. */ + "copy %0, %%r28\n\t" + /* Load callee saves from r3 to r18. */ + "ldw 0(%1), %%r3\n\t" + "ldw 8(%1), %%r4\n\t" + "ldw 12(%1), %%r5\n\t" + "ldw 16(%1), %%r6\n\t" + "ldw 20(%1), %%r7\n\t" + "ldw 24(%1), %%r8\n\t" + "ldw 28(%1), %%r9\n\t" + "ldw 32(%1), %%r10\n\t" + "ldw 36(%1), %%r11\n\t" + "ldw 40(%1), %%r12\n\t" + "ldw 44(%1), %%r13\n\t" + "ldw 48(%1), %%r14\n\t" + "ldw 52(%1), %%r15\n\t" + "ldw 56(%1), %%r16\n\t" + "ldw 60(%1), %%r17\n\t" + "ldw 64(%1), %%r18\n\t" + /* Load PIC register. */ + "ldw 68(%1), %%r19\n\t" + /* Load static link register. */ + "ldw 72(%1), %%r27\n\t" + /* Load stack pointer. */ + "ldw 76(%1), %%r30\n\t" + /* Load return pointer. */ + "ldw 80(%1), %%rp\n\t" + /* Ues a spare caller saves register. */ + "ldo 88(%1),%%r25\n\t" + /* Load callee saves from fr12 to fr21. */ + "fldds,ma 8(%%r25), %%fr12\n\t" + "fldds,ma 8(%%r25), %%fr13\n\t" + "fldds,ma 8(%%r25), %%fr14\n\t" + "fldds,ma 8(%%r25), %%fr15\n\t" + "fldds,ma 8(%%r25), %%fr16\n\t" + "fldds,ma 8(%%r25), %%fr17\n\t" + "fldds,ma 8(%%r25), %%fr18\n\t" + "fldds,ma 8(%%r25), %%fr19\n\t" + "fldds,ma 8(%%r25), %%fr20\n\t" + "fldds 0(%%r25), %%fr21\n\t" + /* Jump back to stored return address. */ + "bv,n %%r0(%%r2)\n\t" + : /* No outputs. */ + : "r" (r25), "r" (r26) + : /* No point in clobbers. */ ); + /* Avoid `volatile function does return' warnings. */ + for (;;); +} |