| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Copyright (C) 1992-2016 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library. If not, see |
| 16 | <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #define __ASSEMBLY__ |
| 19 | |
| 20 | #include <sysdep.h> |
| 21 | #include <jmpbuf-offsets.h> |
| 22 | |
| 23 | .ent __sigsetjmp |
| 24 | .global __sigsetjmp |
| 25 | __sigsetjmp: |
| 26 | ldgp gp, 0(pv) |
| 27 | |
| 28 | $sigsetjmp_local: |
| 29 | #ifndef PIC |
| 30 | #define FRAME 16 |
| 31 | subq sp, FRAME, sp |
| 32 | .frame sp, FRAME, ra, 0 |
| 33 | stq ra, 0(sp) |
| 34 | .mask 0x04000000, -FRAME |
| 35 | #else |
| 36 | #define FRAME 0 |
| 37 | .frame sp, FRAME, ra, 0 |
| 38 | #endif |
| 39 | #ifdef PROF |
| 40 | .set noat |
| 41 | lda AT, _mcount |
| 42 | jsr AT, (AT), _mcount |
| 43 | .set at |
| 44 | #endif |
| 45 | .prologue 1 |
| 46 | |
| 47 | stq s0, JB_S0*8(a0) |
| 48 | stq s1, JB_S1*8(a0) |
| 49 | stq s2, JB_S2*8(a0) |
| 50 | stq s3, JB_S3*8(a0) |
| 51 | stq s4, JB_S4*8(a0) |
| 52 | stq s5, JB_S5*8(a0) |
| 53 | #ifdef PTR_MANGLE |
| 54 | PTR_MANGLE(t1, ra, t0) |
| 55 | stq t1, JB_PC*8(a0) |
| 56 | #else |
| 57 | stq ra, JB_PC*8(a0) |
| 58 | #endif |
| 59 | #if defined(PTR_MANGLE) && FRAME == 0 |
| 60 | PTR_MANGLE2(t1, sp, t0) |
| 61 | #else |
| 62 | addq sp, FRAME, t1 |
| 63 | # ifdef PTR_MANGLE |
| 64 | PTR_MANGLE2(t1, t1, t0) |
| 65 | # endif |
| 66 | #endif |
| 67 | stq t1, JB_SP*8(a0) |
| 68 | #ifdef PTR_MANGLE |
| 69 | PTR_MANGLE2(t1, fp, t0) |
| 70 | stq t1, JB_FP*8(a0) |
| 71 | #else |
| 72 | stq fp, JB_FP*8(a0) |
| 73 | #endif |
| 74 | stt $f2, JB_F2*8(a0) |
| 75 | stt $f3, JB_F3*8(a0) |
| 76 | stt $f4, JB_F4*8(a0) |
| 77 | stt $f5, JB_F5*8(a0) |
| 78 | stt $f6, JB_F6*8(a0) |
| 79 | stt $f7, JB_F7*8(a0) |
| 80 | stt $f8, JB_F8*8(a0) |
| 81 | stt $f9, JB_F9*8(a0) |
| 82 | |
| 83 | #ifndef PIC |
| 84 | /* Call to C to (potentially) save our signal mask. */ |
| 85 | jsr ra, __sigjmp_save |
| 86 | ldq ra, 0(sp) |
| 87 | addq sp, 16, sp |
| 88 | ret |
| 89 | #elif IS_IN (rtld) |
| 90 | /* In ld.so we never save the signal mask. */ |
| 91 | mov 0, v0 |
| 92 | ret |
| 93 | #else |
| 94 | /* Tailcall to save the signal mask. */ |
| 95 | br $31, __sigjmp_save !samegp |
| 96 | #endif |
| 97 | |
| 98 | END(__sigsetjmp) |
| 99 | |
| 100 | /* Put these traditional entry points in the same file so that we can |
| 101 | elide much of the nonsense in trying to jmp to the real function. */ |
| 102 | |
| 103 | ENTRY(_setjmp) |
| 104 | ldgp gp, 0(pv) |
| 105 | .prologue 1 |
| 106 | mov 0, a1 |
| 107 | br $sigsetjmp_local |
| 108 | END(_setjmp) |
| 109 | libc_hidden_def (_setjmp) |
| 110 | |
| 111 | ENTRY(setjmp) |
| 112 | ldgp gp, 0(pv) |
| 113 | .prologue 1 |
| 114 | mov 1, a1 |
| 115 | br $sigsetjmp_local |
| 116 | END(setjmp) |
| 117 | |
| 118 | weak_extern(_setjmp) |
| 119 | weak_extern(setjmp) |