diff options
| author | Palmer Dabbelt <palmer@rivosinc.com> | 2022-03-22 15:48:59 -0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2022-03-22 16:20:37 -0700 |
| commit | bbde015227e89f1da21bd3b84523d62c4a445c06 (patch) | |
| tree | 92f1ed47d77055a7ac9b75edac36a2798677610b /tools/testing/selftests/rseq/param_test.c | |
| parent | 6ae1af9ca0e81f7123d36eae9bf25de63722fbf6 (diff) | |
| parent | 6d1a6f464efd596779d1b272b3dc8170c5fa189f (diff) | |
RISC-V: add support for restartable sequences
Add support for RSEQ, restartable sequences, for RISC-V. This also adds
support for the related selftests.
Note: the selftests require a linker with 3e7bd7f2414 ("RISC-V: Fix
linker problems with tls copy relocs."), which was first released in
2.33 (from 2019).
* palmer/riscv-rseq:
rseq/selftests: Add support for RISC-V
RISC-V: Add support for restartable sequence
Diffstat (limited to 'tools/testing/selftests/rseq/param_test.c')
| -rw-r--r-- | tools/testing/selftests/rseq/param_test.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tools/testing/selftests/rseq/param_test.c b/tools/testing/selftests/rseq/param_test.c index 699ad5f93c34..0a6b8eafd444 100644 --- a/tools/testing/selftests/rseq/param_test.c +++ b/tools/testing/selftests/rseq/param_test.c @@ -207,6 +207,29 @@ unsigned int yield_mod_cnt, nr_abort; "addiu " INJECT_ASM_REG ", -1\n\t" \ "bnez " INJECT_ASM_REG ", 222b\n\t" \ "333:\n\t" +#elif defined(__riscv) + +#define RSEQ_INJECT_INPUT \ + , [loop_cnt_1]"m"(loop_cnt[1]) \ + , [loop_cnt_2]"m"(loop_cnt[2]) \ + , [loop_cnt_3]"m"(loop_cnt[3]) \ + , [loop_cnt_4]"m"(loop_cnt[4]) \ + , [loop_cnt_5]"m"(loop_cnt[5]) \ + , [loop_cnt_6]"m"(loop_cnt[6]) + +#define INJECT_ASM_REG "t1" + +#define RSEQ_INJECT_CLOBBER \ + , INJECT_ASM_REG + +#define RSEQ_INJECT_ASM(n) \ + "lw " INJECT_ASM_REG ", %[loop_cnt_" #n "]\n\t" \ + "beqz " INJECT_ASM_REG ", 333f\n\t" \ + "222:\n\t" \ + "addi " INJECT_ASM_REG "," INJECT_ASM_REG ", -1\n\t" \ + "bnez " INJECT_ASM_REG ", 222b\n\t" \ + "333:\n\t" + #else #error unsupported target |