f8603f2f73
* cgen-fpu.h: Rename extsfdf to fextsfdf. Rename truncdfsf to ftruncdfsf. * cgen-accfp.c (fextsfdf): New function. (ftruncdfsf): New function. (cgen_init_accurate_fpu): Initialize fextsfdf and ftruncdfsf.
213 lines
5.7 KiB
C
213 lines
5.7 KiB
C
/* CGEN fpu support
|
|
Copyright (C) 1999 Cygnus Solutions. */
|
|
|
|
#ifndef CGEN_FPU_H
|
|
#define CGEN_FPU_H
|
|
|
|
/* Floating point support is a little more complicated.
|
|
We want to support using either host fp insns or an accurate fp library.
|
|
We also want to support easily added variants (e.g. modified ieee).
|
|
This is done by vectoring all calls through a table. */
|
|
|
|
typedef USI SF;
|
|
typedef UDI DF;
|
|
typedef struct { SI parts[3]; } XF;
|
|
typedef struct { SI parts[4]; } TF;
|
|
|
|
#ifndef TARGET_EXT_FP_WORDS
|
|
#define TARGET_EXT_FP_WORDS 4
|
|
#endif
|
|
|
|
/* forward decl */
|
|
typedef struct cgen_fp_ops CGEN_FP_OPS;
|
|
|
|
/* Instance of an fpu. */
|
|
|
|
typedef struct {
|
|
/* Usually a pointer back to the SIM_CPU struct. */
|
|
void* owner;
|
|
/* Pointer to ops struct, rather than copy of it, to avoid bloating
|
|
SIM_CPU struct. */
|
|
CGEN_FP_OPS* ops;
|
|
} CGEN_FPU;
|
|
|
|
/* result of cmp */
|
|
|
|
typedef enum {
|
|
/* ??? May wish to distinguish qnan/snan here. */
|
|
FP_CMP_EQ, FP_CMP_LT, FP_CMP_GT, FP_CMP_NAN
|
|
} CGEN_FP_CMP;
|
|
|
|
/* error handler */
|
|
|
|
typedef void (CGEN_FPU_ERROR_FN) (CGEN_FPU*, int);
|
|
|
|
/* fpu operation table */
|
|
|
|
struct cgen_fp_ops {
|
|
|
|
/* error (e.g. signalling nan) handler, supplied by owner */
|
|
|
|
CGEN_FPU_ERROR_FN *error;
|
|
|
|
/* basic SF ops */
|
|
|
|
SF (*addsf) (CGEN_FPU*, SF, SF);
|
|
SF (*subsf) (CGEN_FPU*, SF, SF);
|
|
SF (*mulsf) (CGEN_FPU*, SF, SF);
|
|
SF (*divsf) (CGEN_FPU*, SF, SF);
|
|
SF (*negsf) (CGEN_FPU*, SF);
|
|
SF (*abssf) (CGEN_FPU*, SF);
|
|
SF (*sqrtsf) (CGEN_FPU*, SF);
|
|
SF (*invsf) (CGEN_FPU*, SF);
|
|
SF (*cossf) (CGEN_FPU*, SF);
|
|
SF (*sinsf) (CGEN_FPU*, SF);
|
|
SF (*minsf) (CGEN_FPU*, SF, SF);
|
|
SF (*maxsf) (CGEN_FPU*, SF, SF);
|
|
|
|
/* ??? to be revisited */
|
|
CGEN_FP_CMP (*cmpsf) (CGEN_FPU*, SF, SF);
|
|
int (*eqsf) (CGEN_FPU*, SF, SF);
|
|
int (*nesf) (CGEN_FPU*, SF, SF);
|
|
int (*ltsf) (CGEN_FPU*, SF, SF);
|
|
int (*lesf) (CGEN_FPU*, SF, SF);
|
|
int (*gtsf) (CGEN_FPU*, SF, SF);
|
|
int (*gesf) (CGEN_FPU*, SF, SF);
|
|
|
|
/* basic DF ops */
|
|
|
|
DF (*adddf) (CGEN_FPU*, DF, DF);
|
|
DF (*subdf) (CGEN_FPU*, DF, DF);
|
|
DF (*muldf) (CGEN_FPU*, DF, DF);
|
|
DF (*divdf) (CGEN_FPU*, DF, DF);
|
|
DF (*negdf) (CGEN_FPU*, DF);
|
|
DF (*absdf) (CGEN_FPU*, DF);
|
|
DF (*sqrtdf) (CGEN_FPU*, DF);
|
|
DF (*invdf) (CGEN_FPU*, DF);
|
|
DF (*cosdf) (CGEN_FPU*, DF);
|
|
DF (*sindf) (CGEN_FPU*, DF);
|
|
DF (*mindf) (CGEN_FPU*, DF, DF);
|
|
DF (*maxdf) (CGEN_FPU*, DF, DF);
|
|
|
|
/* ??? to be revisited */
|
|
CGEN_FP_CMP (*cmpdf) (CGEN_FPU*, DF, DF);
|
|
int (*eqdf) (CGEN_FPU*, DF, DF);
|
|
int (*nedf) (CGEN_FPU*, DF, DF);
|
|
int (*ltdf) (CGEN_FPU*, DF, DF);
|
|
int (*ledf) (CGEN_FPU*, DF, DF);
|
|
int (*gtdf) (CGEN_FPU*, DF, DF);
|
|
int (*gedf) (CGEN_FPU*, DF, DF);
|
|
|
|
/* SF/DF conversion ops */
|
|
|
|
DF (*fextsfdf) (CGEN_FPU*, SF);
|
|
SF (*ftruncdfsf) (CGEN_FPU*, DF);
|
|
|
|
SF (*floatsisf) (CGEN_FPU*, SI);
|
|
SF (*floatdisf) (CGEN_FPU*, DI);
|
|
SF (*ufloatsisf) (CGEN_FPU*, USI);
|
|
SF (*ufloatdisf) (CGEN_FPU*, UDI);
|
|
|
|
SI (*fixsfsi) (CGEN_FPU*, SF);
|
|
DI (*fixsfdi) (CGEN_FPU*, SF);
|
|
USI (*ufixsfsi) (CGEN_FPU*, SF);
|
|
UDI (*ufixsfdi) (CGEN_FPU*, SF);
|
|
|
|
DF (*floatsidf) (CGEN_FPU*, SI);
|
|
DF (*floatdidf) (CGEN_FPU*, DI);
|
|
DF (*ufloatsidf) (CGEN_FPU*, USI);
|
|
DF (*ufloatdidf) (CGEN_FPU*, UDI);
|
|
|
|
SI (*fixdfsi) (CGEN_FPU*, DF);
|
|
DI (*fixdfdi) (CGEN_FPU*, DF);
|
|
USI (*ufixdfsi) (CGEN_FPU*, DF);
|
|
UDI (*ufixdfdi) (CGEN_FPU*, DF);
|
|
|
|
/* XF mode support (kept separate 'cus not always present) */
|
|
|
|
XF (*addxf) (CGEN_FPU*, XF, XF);
|
|
XF (*subxf) (CGEN_FPU*, XF, XF);
|
|
XF (*mulxf) (CGEN_FPU*, XF, XF);
|
|
XF (*divxf) (CGEN_FPU*, XF, XF);
|
|
XF (*negxf) (CGEN_FPU*, XF);
|
|
XF (*absxf) (CGEN_FPU*, XF);
|
|
XF (*sqrtxf) (CGEN_FPU*, XF);
|
|
XF (*invxf) (CGEN_FPU*, XF);
|
|
XF (*cosxf) (CGEN_FPU*, XF);
|
|
XF (*sinxf) (CGEN_FPU*, XF);
|
|
XF (*minxf) (CGEN_FPU*, XF, XF);
|
|
XF (*maxxf) (CGEN_FPU*, XF, XF);
|
|
|
|
CGEN_FP_CMP (*cmpxf) (CGEN_FPU*, XF, XF);
|
|
int (*eqxf) (CGEN_FPU*, XF, XF);
|
|
int (*nexf) (CGEN_FPU*, XF, XF);
|
|
int (*ltxf) (CGEN_FPU*, XF, XF);
|
|
int (*lexf) (CGEN_FPU*, XF, XF);
|
|
int (*gtxf) (CGEN_FPU*, XF, XF);
|
|
int (*gexf) (CGEN_FPU*, XF, XF);
|
|
|
|
XF (*extsfxf) (CGEN_FPU*, SF);
|
|
XF (*extdfxf) (CGEN_FPU*, DF);
|
|
SF (*truncxfsf) (CGEN_FPU*, XF);
|
|
DF (*truncxfdf) (CGEN_FPU*, XF);
|
|
|
|
XF (*floatsixf) (CGEN_FPU*, SI);
|
|
XF (*floatdixf) (CGEN_FPU*, DI);
|
|
XF (*ufloatsixf) (CGEN_FPU*, USI);
|
|
XF (*ufloatdixf) (CGEN_FPU*, UDI);
|
|
|
|
SI (*fixxfsi) (CGEN_FPU*, XF);
|
|
DI (*fixxfdi) (CGEN_FPU*, XF);
|
|
USI (*ufixxfsi) (CGEN_FPU*, XF);
|
|
UDI (*ufixxfdi) (CGEN_FPU*, XF);
|
|
|
|
/* TF mode support (kept separate 'cus not always present) */
|
|
|
|
TF (*addtf) (CGEN_FPU*, TF, TF);
|
|
TF (*subtf) (CGEN_FPU*, TF, TF);
|
|
TF (*multf) (CGEN_FPU*, TF, TF);
|
|
TF (*divtf) (CGEN_FPU*, TF, TF);
|
|
TF (*negtf) (CGEN_FPU*, TF);
|
|
TF (*abstf) (CGEN_FPU*, TF);
|
|
TF (*sqrttf) (CGEN_FPU*, TF);
|
|
TF (*invtf) (CGEN_FPU*, TF);
|
|
TF (*costf) (CGEN_FPU*, TF);
|
|
TF (*sintf) (CGEN_FPU*, TF);
|
|
TF (*mintf) (CGEN_FPU*, TF, TF);
|
|
TF (*maxtf) (CGEN_FPU*, TF, TF);
|
|
|
|
CGEN_FP_CMP (*cmptf) (CGEN_FPU*, TF, TF);
|
|
int (*eqtf) (CGEN_FPU*, TF, TF);
|
|
int (*netf) (CGEN_FPU*, TF, TF);
|
|
int (*lttf) (CGEN_FPU*, TF, TF);
|
|
int (*letf) (CGEN_FPU*, TF, TF);
|
|
int (*gttf) (CGEN_FPU*, TF, TF);
|
|
int (*getf) (CGEN_FPU*, TF, TF);
|
|
|
|
TF (*extsftf) (CGEN_FPU*, SF);
|
|
TF (*extdftf) (CGEN_FPU*, DF);
|
|
SF (*trunctfsf) (CGEN_FPU*, TF);
|
|
DF (*trunctfdf) (CGEN_FPU*, TF);
|
|
|
|
TF (*floatsitf) (CGEN_FPU*, SI);
|
|
TF (*floatditf) (CGEN_FPU*, DI);
|
|
TF (*ufloatsitf) (CGEN_FPU*, USI);
|
|
TF (*ufloatditf) (CGEN_FPU*, UDI);
|
|
|
|
SI (*fixtfsi) (CGEN_FPU*, TF);
|
|
DI (*fixtfdi) (CGEN_FPU*, TF);
|
|
USI (*ufixtfsi) (CGEN_FPU*, TF);
|
|
UDI (*ufixtfdi) (CGEN_FPU*, TF);
|
|
|
|
};
|
|
|
|
extern void cgen_init_accurate_fpu (SIM_CPU*, CGEN_FPU*, CGEN_FPU_ERROR_FN*);
|
|
|
|
BI cgen_sf_snan_p (CGEN_FPU*, SF);
|
|
BI cgen_df_snan_p (CGEN_FPU*, DF);
|
|
|
|
/* no-op fp error handler */
|
|
extern CGEN_FPU_ERROR_FN cgen_fpu_ignore_errors;
|
|
|
|
#endif /* CGEN_FPU_H */
|