projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 83ffe9cd | 1 | /* Copyright (C) 2012-2023 Free Software Foundation, Inc. |
| f3f5e3c3 EB |
2 | |
| 3 | This file is part of the GNU Transactional Memory Library (libitm). | |
| 4 | ||
| 5 | Libitm is free software; you can redistribute it and/or modify it | |
| 6 | under the terms of the GNU General Public License as published by | |
| 7 | the Free Software Foundation; either version 3 of the License, or | |
| 8 | (at your option) any later version. | |
| 9 | ||
| 10 | Libitm is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 11 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
| 12 | FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 13 | more details. | |
| 14 | ||
| 15 | Under Section 7 of GPL version 3, you are granted additional | |
| 16 | permissions described in the GCC Runtime Library Exception, version | |
| 17 | 3.1, as published by the Free Software Foundation. | |
| 18 | ||
| 19 | You should have received a copy of the GNU General Public License and | |
| 20 | a copy of the GCC Runtime Library Exception along with this program; | |
| 21 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 22 | <http://www.gnu.org/licenses/>. */ | |
| 23 | ||
| 24 | #include "asmcfi.h" | |
| 25 | ||
| 26 | #ifdef __arch64__ | |
| 27 | # define WORD_SIZE 8 | |
| 28 | # define MIN_FRAME_SIZE 176 | |
| 29 | # define STACK_BIAS 2047 | |
| 30 | # define load ldx | |
| 31 | # define store stx | |
| 32 | #else | |
| 33 | # define WORD_SIZE 4 | |
| 34 | # define MIN_FRAME_SIZE 96 | |
| 35 | # define STACK_BIAS 0 | |
| 36 | # define load ld | |
| 37 | # define store st | |
| 38 | #endif | |
| 39 | ||
| 40 | /* Fields of the JmpBuf structure. */ | |
| 41 | #define JB_CFA 0 | |
| 42 | #define JB_PC 1 | |
| 43 | #define OFFSET(FIELD) ((FIELD) * WORD_SIZE) | |
| 44 | ||
| 45 | /* The frame size must be a multiple of the double-word size. */ | |
| 46 | #define FRAME_SIZE (MIN_FRAME_SIZE + 2 * WORD_SIZE) | |
| 47 | #define JB_OFFSET (STACK_BIAS + MIN_FRAME_SIZE) | |
| 48 | ||
| 49 | .text | |
| 50 | .align 4 | |
| 51 | .globl _ITM_beginTransaction | |
| 52 | .type _ITM_beginTransaction, #function | |
| 53 | .proc 016 | |
| 54 | _ITM_beginTransaction: | |
| 55 | cfi_startproc | |
| 56 | add %sp, STACK_BIAS, %g1 | |
| 57 | sub %sp, FRAME_SIZE, %sp | |
| 58 | cfi_def_cfa_offset(STACK_BIAS + FRAME_SIZE) | |
| 59 | store %g1, [%sp + JB_OFFSET + OFFSET (JB_CFA)] | |
| 60 | store %o7, [%sp + JB_OFFSET + OFFSET (JB_PC)] | |
| 61 | /* ??? This triggers an internal error in GDB. */ | |
| 62 | cfi_offset(%o7, -WORD_SIZE) | |
| 63 | call GTM_begin_transaction | |
| 64 | add %sp, JB_OFFSET, %o1 | |
| 65 | load [%sp + JB_OFFSET + OFFSET (JB_PC)], %o7 | |
| 66 | jmp %o7+8 | |
| 67 | add %sp, FRAME_SIZE, %sp | |
| 68 | cfi_def_cfa_offset(STACK_BIAS) | |
| 69 | cfi_endproc | |
| 70 | .size _ITM_beginTransaction, . - _ITM_beginTransaction | |
| 71 | ||
| 72 | .align 4 | |
| 73 | .globl GTM_longjmp | |
| 74 | #ifdef HAVE_ATTRIBUTE_VISIBILITY | |
| 75 | .hidden GTM_longjmp | |
| 76 | #endif | |
| 77 | .type GTM_longjmp, #function | |
| 78 | .proc 016 | |
| 79 | GTM_longjmp: | |
| 80 | cfi_startproc | |
| 81 | flushw | |
| f3f5e3c3 | 82 | #if STACK_BIAS |
| 62513f7b EB |
83 | load [%o1 + OFFSET (JB_CFA)], %g1 |
| 84 | sub %g1, STACK_BIAS, %fp | |
| 85 | #else | |
| 86 | load [%o1 + OFFSET (JB_CFA)], %fp | |
| f3f5e3c3 | 87 | #endif |
| 62513f7b | 88 | cfi_def_cfa(%fp, STACK_BIAS) |
| f3f5e3c3 EB |
89 | load [%o1 + OFFSET (JB_PC)], %o7 |
| 90 | jmp %o7+8 | |
| 91 | restore %g0, %o0, %o0 | |
| 92 | cfi_endproc | |
| 93 | .size GTM_longjmp, . - GTM_longjmp | |
| 94 | ||
| 95 | #ifdef __linux__ | |
| 96 | .section .note.GNU-stack, "", @progbits | |
| 97 | #endif |