| 1 | /* longjmp for PowerPC. |
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| 2 | Copyright (C) 1995-2024 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <sysdep.h> |
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| 20 | #include <pointer_guard.h> |
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| 21 | #include <stap-probe.h> |
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| 22 | #define _ASM |
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| 23 | #ifdef __NO_VMX__ |
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| 24 | # include <novmxsetjmp.h> |
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| 25 | #else |
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| 26 | # include <jmpbuf-offsets.h> |
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| 27 | #endif |
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| 28 | |
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| 29 | ENTRY (__longjmp_symbol) |
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| 30 | |
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| 31 | #if defined PTR_DEMANGLE || defined CHECK_SP |
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| 32 | lwz r24,(JB_GPR1*4)(r3) |
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| 33 | # ifdef CHECK_SP |
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| 34 | # ifdef PTR_DEMANGLE |
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| 35 | PTR_DEMANGLE3 (r24, r24, r25) |
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| 36 | # endif |
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| 37 | CHECK_SP (r24) |
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| 38 | mr r1,r24 |
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| 39 | # endif |
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| 40 | #else |
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| 41 | lwz r1,(JB_GPR1*4)(r3) |
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| 42 | #endif |
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| 43 | lwz r0,(JB_LR*4)(r3) |
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| 44 | lwz r14,((JB_GPRS+14-14)*4)(r3) |
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| 45 | lwz r15,((JB_GPRS+15-14)*4)(r3) |
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| 46 | lwz r16,((JB_GPRS+16-14)*4)(r3) |
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| 47 | lwz r17,((JB_GPRS+17-14)*4)(r3) |
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| 48 | lwz r18,((JB_GPRS+18-14)*4)(r3) |
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| 49 | lwz r19,((JB_GPRS+19-14)*4)(r3) |
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| 50 | lwz r20,((JB_GPRS+20-14)*4)(r3) |
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| 51 | #ifdef PTR_DEMANGLE |
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| 52 | # ifndef CHECK_SP |
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| 53 | PTR_DEMANGLE3 (r1, r24, r25) |
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| 54 | # endif |
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| 55 | PTR_DEMANGLE2 (r0, r25) |
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| 56 | #endif |
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| 57 | /* longjmp/longjmp_target probe expects longjmp first argument (4@3), |
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| 58 | second argument (-4@4), and target address (4@0), respectively. */ |
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| 59 | LIBC_PROBE (longjmp, 3, 4@3, -4@4, 4@0) |
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| 60 | mtlr r0 |
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| 61 | lwz r21,((JB_GPRS+21-14)*4)(r3) |
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| 62 | lwz r22,((JB_GPRS+22-14)*4)(r3) |
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| 63 | lwz r5,(JB_CR*4)(r3) |
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| 64 | lwz r23,((JB_GPRS+23-14)*4)(r3) |
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| 65 | lwz r24,((JB_GPRS+24-14)*4)(r3) |
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| 66 | lwz r25,((JB_GPRS+25-14)*4)(r3) |
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| 67 | mtcrf 0xFF,r5 |
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| 68 | lwz r26,((JB_GPRS+26-14)*4)(r3) |
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| 69 | lwz r27,((JB_GPRS+27-14)*4)(r3) |
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| 70 | lwz r28,((JB_GPRS+28-14)*4)(r3) |
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| 71 | lwz r29,((JB_GPRS+29-14)*4)(r3) |
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| 72 | lwz r30,((JB_GPRS+30-14)*4)(r3) |
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| 73 | lwz r31,((JB_GPRS+31-14)*4)(r3) |
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| 74 | LIBC_PROBE (longjmp_target, 3, 4@3, -4@4, 4@0) |
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| 75 | mr r3,r4 |
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| 76 | blr |
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| 77 | END (__longjmp_symbol) |
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| 78 | |
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