| /* Copyright (C) 2022-2025 Free Software Foundation, Inc. |
| Contributed by Xiongchuan Tan <xc-tan@outlook.com>. |
| |
| This file is part of the GNU Transactional Memory Library (libitm). |
| |
| Libitm is free software; you can redistribute it and/or modify it |
| under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| Libitm 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 General Public License for |
| more details. |
| |
| Under Section 7 of GPL version 3, you are granted additional |
| permissions described in the GCC Runtime Library Exception, version |
| 3.1, as published by the Free Software Foundation. |
| |
| You should have received a copy of the GNU General Public License and |
| a copy of the GCC Runtime Library Exception along with this program; |
| see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include "asmcfi.h" |
| #include "asm.h" |
| |
| .text |
| .align 2 |
| .global _ITM_beginTransaction |
| .type _ITM_beginTransaction, @function |
| |
| _ITM_beginTransaction: |
| cfi_startproc |
| mv a1, sp |
| addi sp, sp, -ADJ_STACK_SIZE |
| cfi_adjust_cfa_offset(ADJ_STACK_SIZE) |
| |
| /* Return Address */ |
| GPR_S ra, 0*SZ_GPR(sp) |
| cfi_rel_offset(ra, 0*SZ_GPR) |
| |
| /* Caller's sp */ |
| GPR_S a1, 1*SZ_GPR(sp) |
| |
| /* Caller's s0/fp */ |
| GPR_S fp, 2*SZ_GPR(sp) |
| cfi_rel_offset(fp, 2*SZ_GPR) |
| |
| /* Callee-saved registers */ |
| GPR_S s1, 3*SZ_GPR(sp) |
| GPR_S s2, 4*SZ_GPR(sp) |
| GPR_S s3, 5*SZ_GPR(sp) |
| GPR_S s4, 6*SZ_GPR(sp) |
| GPR_S s5, 7*SZ_GPR(sp) |
| GPR_S s6, 8*SZ_GPR(sp) |
| GPR_S s7, 9*SZ_GPR(sp) |
| GPR_S s8, 10*SZ_GPR(sp) |
| GPR_S s9, 11*SZ_GPR(sp) |
| GPR_S s10, 12*SZ_GPR(sp) |
| GPR_S s11, 13*SZ_GPR(sp) |
| |
| #if defined(__riscv_flen) |
| /* Callee-saved floating-point registers */ |
| FPR_S fs0, 0*SZ_FPR+LEN_GPR*SZ_GPR(sp) |
| FPR_S fs1, 1*SZ_FPR+LEN_GPR*SZ_GPR(sp) |
| FPR_S fs2, 2*SZ_FPR+LEN_GPR*SZ_GPR(sp) |
| FPR_S fs3, 3*SZ_FPR+LEN_GPR*SZ_GPR(sp) |
| FPR_S fs4, 4*SZ_FPR+LEN_GPR*SZ_GPR(sp) |
| FPR_S fs5, 5*SZ_FPR+LEN_GPR*SZ_GPR(sp) |
| FPR_S fs6, 6*SZ_FPR+LEN_GPR*SZ_GPR(sp) |
| FPR_S fs7, 7*SZ_FPR+LEN_GPR*SZ_GPR(sp) |
| FPR_S fs8, 8*SZ_FPR+LEN_GPR*SZ_GPR(sp) |
| FPR_S fs9, 9*SZ_FPR+LEN_GPR*SZ_GPR(sp) |
| FPR_S fs10, 10*SZ_FPR+LEN_GPR*SZ_GPR(sp) |
| FPR_S fs11, 11*SZ_FPR+LEN_GPR*SZ_GPR(sp) |
| #endif |
| mv fp, sp |
| |
| /* Invoke GTM_begin_transaction with the struct we've just built. */ |
| mv a1, sp |
| jal ra, GTM_begin_transaction |
| |
| /* Return; we don't need to restore any of the call-saved regs. */ |
| GPR_L ra, 0*SZ_GPR(sp) |
| cfi_restore(ra) |
| GPR_L fp, 2*SZ_GPR(sp) |
| cfi_restore(fp) |
| |
| addi sp, sp, ADJ_STACK_SIZE |
| cfi_adjust_cfa_offset(-ADJ_STACK_SIZE) |
| |
| ret |
| cfi_endproc |
| .size _ITM_beginTransaction, . - _ITM_beginTransaction |
| |
| .align 2 |
| .global GTM_longjmp |
| .hidden GTM_longjmp |
| .type GTM_longjmp, @function |
| |
| GTM_longjmp: |
| /* The first parameter becomes the return value (a0). |
| The third parameter is ignored for now. */ |
| cfi_startproc |
| GPR_L s1, 3*SZ_GPR(a1) |
| GPR_L s2, 4*SZ_GPR(a1) |
| GPR_L s3, 5*SZ_GPR(a1) |
| GPR_L s4, 6*SZ_GPR(a1) |
| GPR_L s5, 7*SZ_GPR(a1) |
| GPR_L s6, 8*SZ_GPR(a1) |
| GPR_L s7, 9*SZ_GPR(a1) |
| GPR_L s8, 10*SZ_GPR(a1) |
| GPR_L s9, 11*SZ_GPR(a1) |
| GPR_L s10, 12*SZ_GPR(a1) |
| GPR_L s11, 13*SZ_GPR(a1) |
| |
| #if defined(__riscv_flen) |
| FPR_L fs0, 0*SZ_FPR+LEN_GPR*SZ_GPR(a1) |
| FPR_L fs1, 1*SZ_FPR+LEN_GPR*SZ_GPR(a1) |
| FPR_L fs2, 2*SZ_FPR+LEN_GPR*SZ_GPR(a1) |
| FPR_L fs3, 3*SZ_FPR+LEN_GPR*SZ_GPR(a1) |
| FPR_L fs4, 4*SZ_FPR+LEN_GPR*SZ_GPR(a1) |
| FPR_L fs5, 5*SZ_FPR+LEN_GPR*SZ_GPR(a1) |
| FPR_L fs6, 6*SZ_FPR+LEN_GPR*SZ_GPR(a1) |
| FPR_L fs7, 7*SZ_FPR+LEN_GPR*SZ_GPR(a1) |
| FPR_L fs8, 8*SZ_FPR+LEN_GPR*SZ_GPR(a1) |
| FPR_L fs9, 9*SZ_FPR+LEN_GPR*SZ_GPR(a1) |
| FPR_L fs10, 10*SZ_FPR+LEN_GPR*SZ_GPR(a1) |
| FPR_L fs11, 11*SZ_FPR+LEN_GPR*SZ_GPR(a1) |
| #endif |
| |
| GPR_L ra, 0*SZ_GPR(a1) |
| GPR_L fp, 2*SZ_GPR(a1) |
| GPR_L a3, 1*SZ_GPR(a1) |
| cfi_def_cfa(a1, 0) |
| mv sp, a3 |
| jr ra |
| cfi_endproc |
| .size GTM_longjmp, . - GTM_longjmp |
| |
| #ifdef __linux__ |
| .section .note.GNU-stack, "", @progbits |
| #endif |
