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| author | Maxim Yurchuk <maxim-yurchuk@ydb.tech> | 2024-10-18 20:31:38 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-10-18 20:31:38 +0300 |
| commit | 2a74bac2d2d3bccb4e10120f1ead805640ec9dd0 (patch) | |
| tree | 047e4818ced5aaf73f58517629e5260b5291f9f0 /contrib/libs/cxxsupp/builtins/arm/sync-ops.h | |
| parent | 2d9656823e9521d8c29ea4c9a1d0eab78391abfc (diff) | |
| parent | 3d834a1923bbf9403cd4a448e7f32b670aa4124f (diff) | |
| download | ydb-2a74bac2d2d3bccb4e10120f1ead805640ec9dd0.tar.gz | |
Merge pull request #10502 from ydb-platform/mergelibs-241016-1210
Library import 241016-1210
Diffstat (limited to 'contrib/libs/cxxsupp/builtins/arm/sync-ops.h')
| -rw-r--r-- | contrib/libs/cxxsupp/builtins/arm/sync-ops.h | 119 |
1 files changed, 61 insertions, 58 deletions
diff --git a/contrib/libs/cxxsupp/builtins/arm/sync-ops.h b/contrib/libs/cxxsupp/builtins/arm/sync-ops.h index ee02c30c6e..dca201d8ae 100644 --- a/contrib/libs/cxxsupp/builtins/arm/sync-ops.h +++ b/contrib/libs/cxxsupp/builtins/arm/sync-ops.h @@ -1,64 +1,67 @@ -/*===-- sync-ops.h - --===// - * - * The LLVM Compiler Infrastructure - * - * This file is dual licensed under the MIT and the University of Illinois Open - * Source Licenses. See LICENSE.TXT for details. - * - *===----------------------------------------------------------------------===// - * - * This file implements outline macros for the __sync_fetch_and_* - * operations. Different instantiations will generate appropriate assembly for - * ARM and Thumb-2 versions of the functions. - * - *===----------------------------------------------------------------------===*/ +//===-- sync-ops.h - --===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements outline macros for the __sync_fetch_and_* +// operations. Different instantiations will generate appropriate assembly for +// ARM and Thumb-2 versions of the functions. +// +//===----------------------------------------------------------------------===// #include "../assembly.h" -#define SYNC_OP_4(op) \ - .p2align 2 ; \ - .thumb ; \ - .syntax unified ; \ - DEFINE_COMPILERRT_THUMB_FUNCTION(__sync_fetch_and_ ## op) \ - dmb ; \ - mov r12, r0 ; \ - LOCAL_LABEL(tryatomic_ ## op): \ - ldrex r0, [r12] ; \ - op(r2, r0, r1) ; \ - strex r3, r2, [r12] ; \ - cmp r3, #0 ; \ - bne LOCAL_LABEL(tryatomic_ ## op) ; \ - dmb ; \ - bx lr +#if __ARM_ARCH >= 7 +#define DMB dmb +#elif __ARM_ARCH >= 6 +#define DMB mcr p15, #0, r0, c7, c10, #5 +#else +#error DMB is only supported on ARMv6+ +#endif -#define SYNC_OP_8(op) \ - .p2align 2 ; \ - .thumb ; \ - .syntax unified ; \ - DEFINE_COMPILERRT_THUMB_FUNCTION(__sync_fetch_and_ ## op) \ - push {r4, r5, r6, lr} ; \ - dmb ; \ - mov r12, r0 ; \ - LOCAL_LABEL(tryatomic_ ## op): \ - ldrexd r0, r1, [r12] ; \ - op(r4, r5, r0, r1, r2, r3) ; \ - strexd r6, r4, r5, [r12] ; \ - cmp r6, #0 ; \ - bne LOCAL_LABEL(tryatomic_ ## op) ; \ - dmb ; \ - pop {r4, r5, r6, pc} +#define SYNC_OP_4(op) \ + .p2align 2; \ + .syntax unified; \ + DEFINE_COMPILERRT_FUNCTION(__sync_fetch_and_##op) \ + DMB; \ + mov r12, r0; \ + LOCAL_LABEL(tryatomic_##op) : ldrex r0, [r12]; \ + op(r2, r0, r1); \ + strex r3, r2, [r12]; \ + cmp r3, #0; \ + bne LOCAL_LABEL(tryatomic_##op); \ + DMB; \ + bx lr -#define MINMAX_4(rD, rN, rM, cmp_kind) \ - cmp rN, rM ; \ - mov rD, rM ; \ - it cmp_kind ; \ - mov##cmp_kind rD, rN +#define SYNC_OP_8(op) \ + .p2align 2; \ + .syntax unified; \ + DEFINE_COMPILERRT_FUNCTION(__sync_fetch_and_##op) \ + push {r4, r5, r6, lr}; \ + DMB; \ + mov r12, r0; \ + LOCAL_LABEL(tryatomic_##op) : ldrexd r0, r1, [r12]; \ + op(r4, r5, r0, r1, r2, r3); \ + strexd r6, r4, r5, [r12]; \ + cmp r6, #0; \ + bne LOCAL_LABEL(tryatomic_##op); \ + DMB; \ + pop { r4, r5, r6, pc } -#define MINMAX_8(rD_LO, rD_HI, rN_LO, rN_HI, rM_LO, rM_HI, cmp_kind) \ - cmp rN_LO, rM_LO ; \ - sbcs rN_HI, rM_HI ; \ - mov rD_LO, rM_LO ; \ - mov rD_HI, rM_HI ; \ - itt cmp_kind ; \ - mov##cmp_kind rD_LO, rN_LO ; \ - mov##cmp_kind rD_HI, rN_HI +#define MINMAX_4(rD, rN, rM, cmp_kind) \ + cmp rN, rM; \ + mov rD, rM; \ + it cmp_kind; \ + mov##cmp_kind rD, rN + +#define MINMAX_8(rD_LO, rD_HI, rN_LO, rN_HI, rM_LO, rM_HI, cmp_kind) \ + cmp rN_LO, rM_LO; \ + sbcs rN_HI, rM_HI; \ + mov rD_LO, rM_LO; \ + mov rD_HI, rM_HI; \ + itt cmp_kind; \ + mov##cmp_kind rD_LO, rN_LO; \ + mov##cmp_kind rD_HI, rN_HI |