diff options
| -rw-r--r-- | target-i386/op_helper.c | 10 | ||||
| -rw-r--r-- | target-i386/translate.c | 8 |
2 files changed, 14 insertions, 4 deletions
diff --git a/target-i386/op_helper.c b/target-i386/op_helper.c index ef0acfcf0b..26fe612048 100644 --- a/target-i386/op_helper.c +++ b/target-i386/op_helper.c @@ -4350,6 +4350,11 @@ void helper_fxsave(target_ulong ptr, int data64) CPU86_LDouble tmp; target_ulong addr; + /* The operand must be 16 byte aligned */ + if (ptr & 0xf) { + raise_exception(EXCP0D_GPF); + } + fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; fptag = 0; for(i = 0; i < 8; i++) { @@ -4406,6 +4411,11 @@ void helper_fxrstor(target_ulong ptr, int data64) CPU86_LDouble tmp; target_ulong addr; + /* The operand must be 16 byte aligned */ + if (ptr & 0xf) { + raise_exception(EXCP0D_GPF); + } + env->fpuc = lduw(ptr); fpus = lduw(ptr + 2); fptag = lduw(ptr + 4); diff --git a/target-i386/translate.c b/target-i386/translate.c index 82ee3d50f1..e3cb49f334 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -7502,9 +7502,9 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start) switch(op) { case 0: /* fxsave */ if (mod == 3 || !(s->cpuid_features & CPUID_FXSR) || - (s->flags & HF_EM_MASK)) + (s->prefix & PREFIX_LOCK)) goto illegal_op; - if (s->flags & HF_TS_MASK) { + if ((s->flags & HF_EM_MASK) || (s->flags & HF_TS_MASK)) { gen_exception(s, EXCP07_PREX, pc_start - s->cs_base); break; } @@ -7516,9 +7516,9 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start) break; case 1: /* fxrstor */ if (mod == 3 || !(s->cpuid_features & CPUID_FXSR) || - (s->flags & HF_EM_MASK)) + (s->prefix & PREFIX_LOCK)) goto illegal_op; - if (s->flags & HF_TS_MASK) { + if ((s->flags & HF_EM_MASK) || (s->flags & HF_TS_MASK)) { gen_exception(s, EXCP07_PREX, pc_start - s->cs_base); break; } |