diff options
| author | Richard Henderson <rth@twiddle.net> | 2016-03-01 08:59:32 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2016-03-14 10:52:42 -0700 |
| commit | a657f79e32422634415c09f3f15c73d610297af5 (patch) | |
| tree | 4faccbb8e9f3433bb5dbd750fbfcb8c1e268280e | |
| parent | 880f8486503b32a29b653a3c0b3cfc5432012f38 (diff) | |
target-i386: Fix SMSW for 64-bit mode
In non-64-bit modes, the instruction always stores 16 bits.
But in 64-bit mode, when the destination is a register, the
instruction can write 32 or 64 bits.
Tested-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
| -rw-r--r-- | target-i386/translate.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/target-i386/translate.c b/target-i386/translate.c index 10cc2fa8e5..b73c237c9e 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -7282,12 +7282,14 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, CASE_MODRM_OP(4): /* smsw */ gen_svm_check_intercept(s, pc_start, SVM_EXIT_READ_CR0); -#if defined TARGET_X86_64 && defined HOST_WORDS_BIGENDIAN - tcg_gen_ld32u_tl(cpu_T0, cpu_env, offsetof(CPUX86State, cr[0]) + 4); -#else - tcg_gen_ld32u_tl(cpu_T0, cpu_env, offsetof(CPUX86State, cr[0])); -#endif - gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 1); + tcg_gen_ld_tl(cpu_T0, cpu_env, offsetof(CPUX86State, cr[0])); + if (CODE64(s)) { + mod = (modrm >> 6) & 3; + ot = (mod != 3 ? MO_16 : s->dflag); + } else { + ot = MO_16; + } + gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 1); break; CASE_MODRM_OP(6): /* lmsw */ |