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added float support

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@15 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-03-02 19:39:42 +00:00
parent 367e86e847
commit 927f621e79
6 changed files with 937 additions and 163 deletions
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51
cpu-i386.h
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@ -75,6 +75,16 @@ enum {
CC_OP_NB,
};
#ifdef __i386__
#define USE_X86LDOUBLE
#endif
#ifdef USE_X86LDOUBLE
typedef long double CPU86_LDouble;
#else
typedef double CPU86_LDouble;
#endif
typedef struct CPU86State {
/* standard registers */
uint32_t regs[8];
@ -91,10 +101,18 @@ typedef struct CPU86State {
uint8_t *segs_base[6];
uint32_t segs[6];
/* FPU state */
CPU86_LDouble fpregs[8];
uint8_t fptags[8]; /* 0 = valid, 1 = empty */
unsigned int fpstt; /* top of stack index */
unsigned int fpus;
unsigned int fpuc;
/* emulator internal variables */
uint32_t t0; /* temporary t0 storage */
uint32_t t1; /* temporary t1 storage */
uint32_t a0; /* temporary a0 storage (address) */
CPU86_LDouble ft0;
} CPU86State;
static inline int ldub(void *ptr)
@ -122,6 +140,10 @@ static inline int ldl(void *ptr)
return *(uint32_t *)ptr;
}
static inline uint64_t ldq(void *ptr)
{
return *(uint64_t *)ptr;
}
static inline void stb(void *ptr, int v)
{
@ -138,11 +160,40 @@ static inline void stl(void *ptr, int v)
*(uint32_t *)ptr = v;
}
static inline void stq(void *ptr, int v)
{
*(uint64_t *)ptr = v;
}
/* float access */
static inline float ldfl(void *ptr)
{
return *(float *)ptr;
}
static inline double ldfq(void *ptr)
{
return *(double *)ptr;
}
static inline void stfl(void *ptr, float v)
{
*(float *)ptr = v;
}
static inline void stfq(void *ptr, double v)
{
*(double *)ptr = v;
}
#ifndef IN_OP_I386
void port_outb(int addr, int val);
void port_outw(int addr, int val);
void port_outl(int addr, int val);
int port_inb(int addr);
int port_inw(int addr);
int port_inl(int addr);
#endif
#endif /* CPU_I386_H */