diff options
| author | Mihail Abakumov <mikhail.abakumov@ispras.ru> | 2017-05-19 12:36:15 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-06-07 18:22:02 +0200 |
| commit | 5b003a40bb1ab14d0398e91f03393d3c6b9577cd (patch) | |
| tree | e823d36ee2bfd4dc9d9769409eabdaaaba42909a /target | |
| parent | f8c45c6550b9ff1e1f0b92709ff3213a79870879 (diff) | |
i386: fix read/write cr with icount option
Running Windows with icount causes a crash in instruction of write cr.
This patch fixes it.
Reading and writing cr cause an icount read because there are called
cpu_get_apic_tpr and cpu_set_apic_tpr functions. So, there is need
gen_io_start()/gen_io_end() calls.
Signed-off-by: Mihail Abakumov <mikhail.abakumov@ispras.ru>
Message-Id: <ffb376034ff184f2fcbe93d5317d9e76@ispras.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target')
| -rw-r--r-- | target/i386/translate.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/target/i386/translate.c b/target/i386/translate.c index 674ec96d5a..ed3b896db4 100644 --- a/target/i386/translate.c +++ b/target/i386/translate.c @@ -7939,14 +7939,26 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, gen_update_cc_op(s); gen_jmp_im(pc_start - s->cs_base); if (b & 2) { + if (s->tb->cflags & CF_USE_ICOUNT) { + gen_io_start(); + } gen_op_mov_v_reg(ot, cpu_T0, rm); gen_helper_write_crN(cpu_env, tcg_const_i32(reg), cpu_T0); + if (s->tb->cflags & CF_USE_ICOUNT) { + gen_io_end(); + } gen_jmp_im(s->pc - s->cs_base); gen_eob(s); } else { + if (s->tb->cflags & CF_USE_ICOUNT) { + gen_io_start(); + } gen_helper_read_crN(cpu_T0, cpu_env, tcg_const_i32(reg)); gen_op_mov_reg_v(ot, rm, cpu_T0); + if (s->tb->cflags & CF_USE_ICOUNT) { + gen_io_end(); + } } break; default: |