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soft float support

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1336 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-03-13 17:01:47 +00:00
parent 4ecc31906d
commit 7a0e1f41ce
9 changed files with 139 additions and 231 deletions
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70
target-i386/exec.h
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@ -139,44 +139,6 @@ extern int loglevel;
#include "cpu.h"
#include "exec-all.h"
/* XXX: add a generic FPU library */
static inline double float32_to_float64(float a)
{
return a;
}
static inline float float64_to_float32(double a)
{
return a;
}
#if defined(__powerpc__)
/* better to call an helper on ppc */
float int32_to_float32(int32_t a);
double int32_to_float64(int32_t a);
#else
static inline float int32_to_float32(int32_t a)
{
return (float)a;
}
static inline double int32_to_float64(int32_t a)
{
return (double)a;
}
#endif
static inline float int64_to_float32(int64_t a)
{
return (float)a;
}
static inline double int64_to_float64(int64_t a)
{
return (double)a;
}
typedef struct CCTable {
int (*compute_all)(void); /* return all the flags */
int (*compute_c)(void); /* return the C flag */
@ -358,9 +320,11 @@ static inline void stfl(target_ulong ptr, float v)
#ifdef USE_X86LDOUBLE
/* use long double functions */
#define lrint lrintl
#define llrint llrintl
#define fabs fabsl
#define floatx_to_int32 floatx80_to_int32
#define floatx_to_int64 floatx80_to_int64
#define floatx_abs floatx80_abs
#define floatx_chs floatx80_chs
#define floatx_round_to_int floatx80_round_to_int
#define sin sinl
#define cos cosl
#define sqrt sqrtl
@ -370,17 +334,14 @@ static inline void stfl(target_ulong ptr, float v)
#define atan2 atan2l
#define floor floorl
#define ceil ceill
#define rint rintl
#else
#define floatx_to_int32 float64_to_int32
#define floatx_to_int64 float64_to_int64
#define floatx_abs float64_abs
#define floatx_chs float64_chs
#define floatx_round_to_int float64_round_to_int
#endif
#if !defined(_BSD)
extern int lrint(CPU86_LDouble x);
extern int64_t llrint(CPU86_LDouble x);
#else
#define lrint(d) ((int)rint(d))
#define llrint(d) ((int)rint(d))
#endif
extern CPU86_LDouble fabs(CPU86_LDouble x);
extern CPU86_LDouble sin(CPU86_LDouble x);
extern CPU86_LDouble cos(CPU86_LDouble x);
extern CPU86_LDouble sqrt(CPU86_LDouble x);
@ -390,7 +351,6 @@ extern CPU86_LDouble tan(CPU86_LDouble x);
extern CPU86_LDouble atan2(CPU86_LDouble, CPU86_LDouble);
extern CPU86_LDouble floor(CPU86_LDouble x);
extern CPU86_LDouble ceil(CPU86_LDouble x);
extern CPU86_LDouble rint(CPU86_LDouble x);
#define RC_MASK 0xc00
#define RC_NEAR 0x000
@ -400,13 +360,6 @@ extern CPU86_LDouble rint(CPU86_LDouble x);
#define MAXTAN 9223372036854775808.0
#ifdef __arm__
/* we have no way to do correct rounding - a FPU emulator is needed */
#define FE_DOWNWARD FE_TONEAREST
#define FE_UPWARD FE_TONEAREST
#define FE_TOWARDZERO FE_TONEAREST
#endif
#ifdef USE_X86LDOUBLE
/* only for x86 */
@ -596,6 +549,7 @@ float approx_rsqrt(float a);
float approx_rcp(float a);
double helper_sqrt(double a);
int fpu_isnan(double a);
void update_fp_status(void);
extern const uint8_t parity_table[256];
extern const uint8_t rclw_table[32];