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target/i386: split cpu_set_mxcsr() and make cpu_set_fpuc() inline 

Split the cpu_set_mxcsr() and make cpu_set_fpuc() inline with specific
tcg code.

Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Yang Zhong 2017-07-03 18:12:19 +08:00 committed by Paolo Bonzini
parent db573d2cf7
commit 1d8ad165b6
3 changed files with 24 additions and 13 deletions
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21
target/i386/cpu.h
View File

@ -1594,7 +1594,6 @@ void QEMU_NORETURN raise_interrupt(CPUX86State *nenv, int intno, int is_int,
/* cc_helper.c */
extern const uint8_t parity_table[256];
uint32_t cpu_cc_compute_all(CPUX86State *env1, int op);
void update_fp_status(CPUX86State *env);
static inline uint32_t cpu_compute_eflags(CPUX86State *env)
{
@ -1643,8 +1642,24 @@ static inline int32_t x86_get_a20_mask(CPUX86State *env)
}
/* fpu_helper.c */
void cpu_set_mxcsr(CPUX86State *env, uint32_t val);
void cpu_set_fpuc(CPUX86State *env, uint16_t val);
void update_fp_status(CPUX86State *env);
void update_mxcsr_status(CPUX86State *env);
static inline void cpu_set_mxcsr(CPUX86State *env, uint32_t mxcsr)
{
env->mxcsr = mxcsr;
if (tcg_enabled()) {
update_mxcsr_status(env);
}
}
static inline void cpu_set_fpuc(CPUX86State *env, uint16_t fpuc)
{
env->fpuc = fpuc;
if (tcg_enabled()) {
update_fp_status(env);
}
}
/* mem_helper.c */
void helper_lock_init(void);

11
target/i386/fpu_helper.c
View File

@ -1550,12 +1550,11 @@ void helper_xsetbv(CPUX86State *env, uint32_t ecx, uint64_t mask)
#define SSE_RC_CHOP 0x6000
#define SSE_FZ 0x8000
void cpu_set_mxcsr(CPUX86State *env, uint32_t mxcsr)
void update_mxcsr_status(CPUX86State *env)
{
uint32_t mxcsr = env->mxcsr;
int rnd_type;
env->mxcsr = mxcsr;
/* set rounding mode */
switch (mxcsr & SSE_RC_MASK) {
default:
@ -1581,12 +1580,6 @@ void cpu_set_mxcsr(CPUX86State *env, uint32_t mxcsr)
set_flush_to_zero((mxcsr & SSE_FZ) ? 1 : 0, &env->fp_status);
}
void cpu_set_fpuc(CPUX86State *env, uint16_t val)
{
env->fpuc = val;
update_fp_status(env);
}
void helper_ldmxcsr(CPUX86State *env, uint32_t val)
{
cpu_set_mxcsr(env, val);

5
target/i386/machine.c
View File

@ -280,7 +280,10 @@ static int cpu_post_load(void *opaque, int version_id)
for(i = 0; i < 8; i++) {
env->fptags[i] = (env->fptag_vmstate >> i) & 1;
}
update_fp_status(env);
if (tcg_enabled()) {
update_fp_status(env);
update_mxcsr_status(env);
}
cpu_breakpoint_remove_all(cs, BP_CPU);
cpu_watchpoint_remove_all(cs, BP_CPU);