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fixed long double accesses when using soft MMU 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@428 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-10-28 23:06:17 +00:00
parent 8948b5d613
commit 9951bf39f9
3 changed files with 150 additions and 137 deletions
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259
target-i386/exec.h
View File

@ -171,6 +171,115 @@ void helper_wrmsr(void);
void helper_lsl(void);
void helper_lar(void);
/* XXX: move that to a generic header */
#if !defined(CONFIG_USER_ONLY)
#define ldul_user ldl_user
#define ldul_kernel ldl_kernel
#define ACCESS_TYPE 0
#define MEMSUFFIX _kernel
#define DATA_SIZE 1
#include "softmmu_header.h"
#define DATA_SIZE 2
#include "softmmu_header.h"
#define DATA_SIZE 4
#include "softmmu_header.h"
#define DATA_SIZE 8
#include "softmmu_header.h"
#undef ACCESS_TYPE
#undef MEMSUFFIX
#define ACCESS_TYPE 1
#define MEMSUFFIX _user
#define DATA_SIZE 1
#include "softmmu_header.h"
#define DATA_SIZE 2
#include "softmmu_header.h"
#define DATA_SIZE 4
#include "softmmu_header.h"
#define DATA_SIZE 8
#include "softmmu_header.h"
#undef ACCESS_TYPE
#undef MEMSUFFIX
/* these access are slower, they must be as rare as possible */
#define ACCESS_TYPE 2
#define MEMSUFFIX _data
#define DATA_SIZE 1
#include "softmmu_header.h"
#define DATA_SIZE 2
#include "softmmu_header.h"
#define DATA_SIZE 4
#include "softmmu_header.h"
#define DATA_SIZE 8
#include "softmmu_header.h"
#undef ACCESS_TYPE
#undef MEMSUFFIX
#define ldub(p) ldub_data(p)
#define ldsb(p) ldsb_data(p)
#define lduw(p) lduw_data(p)
#define ldsw(p) ldsw_data(p)
#define ldl(p) ldl_data(p)
#define ldq(p) ldq_data(p)
#define stb(p, v) stb_data(p, v)
#define stw(p, v) stw_data(p, v)
#define stl(p, v) stl_data(p, v)
#define stq(p, v) stq_data(p, v)
static inline double ldfq(void *ptr)
{
union {
double d;
uint64_t i;
} u;
u.i = ldq(ptr);
return u.d;
}
static inline void stfq(void *ptr, double v)
{
union {
double d;
uint64_t i;
} u;
u.d = v;
stq(ptr, u.i);
}
static inline float ldfl(void *ptr)
{
union {
float f;
uint32_t i;
} u;
u.i = ldl(ptr);
return u.f;
}
static inline void stfl(void *ptr, float v)
{
union {
float f;
uint32_t i;
} u;
u.f = v;
stl(ptr, u.i);
}
#endif /* !defined(CONFIG_USER_ONLY) */
#ifdef USE_X86LDOUBLE
/* use long double functions */
#define lrint lrintl
@ -317,7 +426,47 @@ static inline void helper_fstt(CPU86_LDouble f, uint8_t *ptr)
e |= SIGND(temp) >> 16;
stw(ptr + 8, e);
}
#endif
#else
/* XXX: same endianness assumed */
#ifdef CONFIG_USER_ONLY
static inline CPU86_LDouble helper_fldt(uint8_t *ptr)
{
return *(CPU86_LDouble *)ptr;
}
static inline void helper_fstt(CPU86_LDouble f, uint8_t *ptr)
{
*(CPU86_LDouble *)ptr = f;
}
#else
/* we use memory access macros */
static inline CPU86_LDouble helper_fldt(uint8_t *ptr)
{
CPU86_LDoubleU temp;
temp.l.lower = ldq(ptr);
temp.l.upper = lduw(ptr + 8);
return temp.d;
}
static inline void helper_fstt(CPU86_LDouble f, uint8_t *ptr)
{
CPU86_LDoubleU temp;
temp.d = f;
stq(ptr, temp.l.lower);
stw(ptr + 8, temp.l.upper);
}
#endif /* !CONFIG_USER_ONLY */
#endif /* USE_X86LDOUBLE */
const CPU86_LDouble f15rk[7];
@ -368,111 +517,3 @@ static inline void load_eflags(int eflags, int update_mask)
(eflags & update_mask);
}
/* XXX: move that to a generic header */
#if !defined(CONFIG_USER_ONLY)
#define ldul_user ldl_user
#define ldul_kernel ldl_kernel
#define ACCESS_TYPE 0
#define MEMSUFFIX _kernel
#define DATA_SIZE 1
#include "softmmu_header.h"
#define DATA_SIZE 2
#include "softmmu_header.h"
#define DATA_SIZE 4
#include "softmmu_header.h"
#define DATA_SIZE 8
#include "softmmu_header.h"
#undef ACCESS_TYPE
#undef MEMSUFFIX
#define ACCESS_TYPE 1
#define MEMSUFFIX _user
#define DATA_SIZE 1
#include "softmmu_header.h"
#define DATA_SIZE 2
#include "softmmu_header.h"
#define DATA_SIZE 4
#include "softmmu_header.h"
#define DATA_SIZE 8
#include "softmmu_header.h"
#undef ACCESS_TYPE
#undef MEMSUFFIX
/* these access are slower, they must be as rare as possible */
#define ACCESS_TYPE 2
#define MEMSUFFIX _data
#define DATA_SIZE 1
#include "softmmu_header.h"
#define DATA_SIZE 2
#include "softmmu_header.h"
#define DATA_SIZE 4
#include "softmmu_header.h"
#define DATA_SIZE 8
#include "softmmu_header.h"
#undef ACCESS_TYPE
#undef MEMSUFFIX
#define ldub(p) ldub_data(p)
#define ldsb(p) ldsb_data(p)
#define lduw(p) lduw_data(p)
#define ldsw(p) ldsw_data(p)
#define ldl(p) ldl_data(p)
#define ldq(p) ldq_data(p)
#define stb(p, v) stb_data(p, v)
#define stw(p, v) stw_data(p, v)
#define stl(p, v) stl_data(p, v)
#define stq(p, v) stq_data(p, v)
static inline double ldfq(void *ptr)
{
union {
double d;
uint64_t i;
} u;
u.i = ldq(ptr);
return u.d;
}
static inline void stfq(void *ptr, double v)
{
union {
double d;
uint64_t i;
} u;
u.d = v;
stq(ptr, u.i);
}
static inline float ldfl(void *ptr)
{
union {
float f;
uint32_t i;
} u;
u.i = ldl(ptr);
return u.f;
}
static inline void stfl(void *ptr, float v)
{
union {
float f;
uint32_t i;
} u;
u.f = v;
stl(ptr, u.i);
}
#endif /* !defined(CONFIG_USER_ONLY) */

10
target-i386/helper.c
View File

@ -1318,7 +1318,6 @@ void helper_lar(void)
/* FPU helpers */
#ifndef USE_X86LDOUBLE
void helper_fldt_ST0_A0(void)
{
int new_fpstt;
@ -1332,7 +1331,6 @@ void helper_fstt_ST0_A0(void)
{
helper_fstt(ST0, (uint8_t *)A0);
}
#endif
/* BCD ops */
@ -1729,11 +1727,7 @@ void helper_fsave(uint8_t *ptr, int data32)
ptr += (14 << data32);
for(i = 0;i < 8; i++) {
tmp = ST(i);
#ifdef USE_X86LDOUBLE
*(long double *)ptr = tmp;
#else
helper_fstt(tmp, ptr);
#endif
ptr += 10;
}
@ -1760,11 +1754,7 @@ void helper_frstor(uint8_t *ptr, int data32)
ptr += (14 << data32);
for(i = 0;i < 8; i++) {
#ifdef USE_X86LDOUBLE
tmp = *(long double *)ptr;
#else
tmp = helper_fldt(ptr);
#endif
ST(i) = tmp;
ptr += 10;
}

18
target-i386/op.c
View File

@ -1471,21 +1471,10 @@ void OPPROTO op_fldl_ST0_A0(void)
env->fptags[new_fpstt] = 0; /* validate stack entry */
}
#ifdef USE_X86LDOUBLE
void OPPROTO op_fldt_ST0_A0(void)
{
int new_fpstt;
new_fpstt = (env->fpstt - 1) & 7;
env->fpregs[new_fpstt] = *(long double *)A0;
env->fpstt = new_fpstt;
env->fptags[new_fpstt] = 0; /* validate stack entry */
}
#else
void OPPROTO op_fldt_ST0_A0(void)
{
helper_fldt_ST0_A0();
}
#endif
/* helpers are needed to avoid static constant reference. XXX: find a better way */
#ifdef USE_INT_TO_FLOAT_HELPERS
@ -1595,17 +1584,10 @@ void OPPROTO op_fstl_ST0_A0(void)
stfq((void *)A0, (double)ST0);
}
#ifdef USE_X86LDOUBLE
void OPPROTO op_fstt_ST0_A0(void)
{
*(long double *)A0 = ST0;
}
#else
void OPPROTO op_fstt_ST0_A0(void)
{
helper_fstt_ST0_A0();
}
#endif
void OPPROTO op_fist_ST0_A0(void)
{