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Diffstat (limited to 'test/syscalls/linux/rseq/critical.S')
-rw-r--r-- | test/syscalls/linux/rseq/critical.S | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/test/syscalls/linux/rseq/critical.S b/test/syscalls/linux/rseq/critical.S deleted file mode 100644 index 8c0687e6d..000000000 --- a/test/syscalls/linux/rseq/critical.S +++ /dev/null @@ -1,66 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Restartable sequences critical sections. - -// Loops continuously until aborted. -// -// void rseq_loop(struct rseq* r, struct rseq_cs* cs) - - .text - .globl rseq_loop - .type rseq_loop, @function - -rseq_loop: - jmp begin - - // Abort block before the critical section. - // Abort signature is 4 nops for simplicity. - .byte 0x90, 0x90, 0x90, 0x90 - .globl rseq_loop_early_abort -rseq_loop_early_abort: - ret - -begin: - // r->rseq_cs = cs - movq %rsi, 8(%rdi) - - // N.B. rseq_cs will be cleared by any preempt, even outside the critical - // section. Thus it must be set in or immediately before the critical section - // to ensure it is not cleared before the section begins. - .globl rseq_loop_start -rseq_loop_start: - jmp rseq_loop_start - - // "Pre-commit": extra instructions inside the critical section. These are - // used as the abort point in TestAbortPreCommit, which is not valid. - .globl rseq_loop_pre_commit -rseq_loop_pre_commit: - // Extra abort signature + nop for TestAbortPostCommit. - .byte 0x90, 0x90, 0x90, 0x90 - nop - - // "Post-commit": never reached in this case. - .globl rseq_loop_post_commit -rseq_loop_post_commit: - - // Abort signature is 4 nops for simplicity. - .byte 0x90, 0x90, 0x90, 0x90 - - .globl rseq_loop_abort -rseq_loop_abort: - ret - - .size rseq_loop,.-rseq_loop - .section .note.GNU-stack,"",@progbits |