| 1 | /* Copyright (C) 1992-2022 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library. If not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #define __ASSEMBLY__ |
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| 19 | |
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| 20 | #include <sysdep.h> |
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| 21 | #include <jmpbuf-offsets.h> |
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| 22 | |
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| 23 | .ent __sigsetjmp |
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| 24 | .global __sigsetjmp |
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| 25 | __sigsetjmp: |
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| 26 | ldgp gp, 0(pv) |
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| 27 | |
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| 28 | $sigsetjmp_local: |
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| 29 | #ifndef PIC |
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| 30 | #define FRAME 16 |
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| 31 | subq sp, FRAME, sp |
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| 32 | .frame sp, FRAME, ra, 0 |
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| 33 | stq ra, 0(sp) |
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| 34 | .mask 0x04000000, -FRAME |
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| 35 | #else |
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| 36 | #define FRAME 0 |
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| 37 | .frame sp, FRAME, ra, 0 |
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| 38 | #endif |
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| 39 | #ifdef PROF |
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| 40 | .set noat |
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| 41 | lda AT, _mcount |
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| 42 | jsr AT, (AT), _mcount |
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| 43 | .set at |
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| 44 | #endif |
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| 45 | .prologue 1 |
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| 46 | |
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| 47 | stq s0, JB_S0*8(a0) |
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| 48 | stq s1, JB_S1*8(a0) |
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| 49 | stq s2, JB_S2*8(a0) |
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| 50 | stq s3, JB_S3*8(a0) |
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| 51 | stq s4, JB_S4*8(a0) |
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| 52 | stq s5, JB_S5*8(a0) |
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| 53 | #ifdef PTR_MANGLE |
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| 54 | PTR_MANGLE(t1, ra, t0) |
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| 55 | stq t1, JB_PC*8(a0) |
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| 56 | #else |
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| 57 | stq ra, JB_PC*8(a0) |
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| 58 | #endif |
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| 59 | #if defined(PTR_MANGLE) && FRAME == 0 |
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| 60 | PTR_MANGLE2(t1, sp, t0) |
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| 61 | #else |
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| 62 | addq sp, FRAME, t1 |
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| 63 | # ifdef PTR_MANGLE |
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| 64 | PTR_MANGLE2(t1, t1, t0) |
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| 65 | # endif |
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| 66 | #endif |
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| 67 | stq t1, JB_SP*8(a0) |
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| 68 | #ifdef PTR_MANGLE |
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| 69 | PTR_MANGLE2(t1, fp, t0) |
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| 70 | stq t1, JB_FP*8(a0) |
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| 71 | #else |
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| 72 | stq fp, JB_FP*8(a0) |
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| 73 | #endif |
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| 74 | stt $f2, JB_F2*8(a0) |
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| 75 | stt $f3, JB_F3*8(a0) |
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| 76 | stt $f4, JB_F4*8(a0) |
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| 77 | stt $f5, JB_F5*8(a0) |
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| 78 | stt $f6, JB_F6*8(a0) |
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| 79 | stt $f7, JB_F7*8(a0) |
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| 80 | stt $f8, JB_F8*8(a0) |
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| 81 | stt $f9, JB_F9*8(a0) |
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| 82 | |
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| 83 | #ifndef PIC |
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| 84 | /* Call to C to (potentially) save our signal mask. */ |
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| 85 | jsr ra, __sigjmp_save |
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| 86 | ldq ra, 0(sp) |
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| 87 | addq sp, 16, sp |
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| 88 | ret |
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| 89 | #elif IS_IN (rtld) |
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| 90 | /* In ld.so we never save the signal mask. */ |
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| 91 | mov 0, v0 |
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| 92 | ret |
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| 93 | #else |
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| 94 | /* Tailcall to save the signal mask. */ |
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| 95 | br $31, __sigjmp_save !samegp |
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| 96 | #endif |
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| 97 | |
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| 98 | END(__sigsetjmp) |
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| 99 | hidden_def (__sigsetjmp) |
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| 100 | |
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| 101 | /* Put these traditional entry points in the same file so that we can |
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| 102 | elide much of the nonsense in trying to jmp to the real function. */ |
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| 103 | |
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| 104 | ENTRY(_setjmp) |
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| 105 | ldgp gp, 0(pv) |
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| 106 | .prologue 1 |
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| 107 | mov 0, a1 |
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| 108 | br $sigsetjmp_local |
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| 109 | END(_setjmp) |
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| 110 | libc_hidden_def (_setjmp) |
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| 111 | |
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| 112 | ENTRY(setjmp) |
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| 113 | ldgp gp, 0(pv) |
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| 114 | .prologue 1 |
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| 115 | mov 1, a1 |
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| 116 | br $sigsetjmp_local |
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| 117 | END(setjmp) |
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| 118 | |
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| 119 | weak_extern(_setjmp) |
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| 120 | weak_extern(setjmp) |
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| 121 | |
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