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| author | Maxime Chevalier-Boisvert <maxime.chevalierboisvert@shopify.com> | 2021-05-11 16:33:28 -0400 |
|---|---|---|
| committer | Alan Wu <XrXr@users.noreply.github.com> | 2021-10-20 18:19:35 -0400 |
| commit | 5c2f74fc32951fc038dca465985a4859c517ef47 (patch) | |
| tree | 8a5c59397131a6beb8c934ccd2f09588ac621e43 /yjit_asm.c | |
| parent | 54fe43b45ce65f0e2cde4d4e950303893a721ebd (diff) | |
Fix encoding of test x86 instruction
Diffstat (limited to 'yjit_asm.c')
| -rw-r--r-- | yjit_asm.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/yjit_asm.c b/yjit_asm.c index c47e1fd274..76fc3bf8db 100644 --- a/yjit_asm.c +++ b/yjit_asm.c @@ -1664,7 +1664,15 @@ void test(codeblock_t* cb, x86opnd_t rm_opnd, x86opnd_t test_opnd) else { assert (test_opnd.num_bits == rm_opnd.num_bits); - cb_write_rm(cb, false, rm_opnd.num_bits == 64, test_opnd, rm_opnd, 0xFF, 1, 0x85); + + if (rm_opnd.num_bits == 8) + { + cb_write_rm(cb, false, false, test_opnd, rm_opnd, 0xFF, 1, 0x84); + } + else + { + cb_write_rm(cb, rm_opnd.num_bits == 16, rm_opnd.num_bits == 64, test_opnd, rm_opnd, 0xFF, 1, 0x85); + } } } |