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| author | Faraz Shahbazker <fshahbazker@wavecomp.com> | 2022-02-02 11:17:24 +0100 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2022-02-04 19:37:26 -0500 |
| commit | fc3c199facd60cc2facbfeee3e541e6aa6410f52 (patch) | |
| tree | cad3fd3cd57d890ca4d61500778caeccb3f3e683 /sim/common/sim-fpu.h | |
| parent | b6af5f3a74d9ed8d78e2467a895d5ae0b732f114 (diff) | |
| download | fsf-binutils-gdb-fc3c199facd60cc2facbfeee3e541e6aa6410f52.zip fsf-binutils-gdb-fc3c199facd60cc2facbfeee3e541e6aa6410f52.tar.gz fsf-binutils-gdb-fc3c199facd60cc2facbfeee3e541e6aa6410f52.tar.bz2 | |
sim: Add partial support for IEEE 754-2008
2022-02-01 Faraz Shahbazker <fshahbazker@wavecomp.com>
sim/common/ChangeLog:
* sim-fpu.c (sim_fpu_minmax_nan): New.
(sim_fpu_max): Add variant behaviour for IEEE 754-2008.
(sim_fpu_min): Likewise.
(sim_fpu_is_un, sim_fpu_is_or): New.
(sim_fpu_un, sim_fpu_or): New.
(sim_fpu_is_ieee754_2008, sim_fpu_is_ieee754_1985): New.
(sim_fpu_set_mode): New.
(sim_fpu_classify): New.
* sim-fpu.h (sim_fpu_minmax_nan): New declaration.
(sim_fpu_un, sim_fpu_or): New declarations.
(sim_fpu_is_un, sim_fpu_is_or): New declarations.
(sim_fpu_mode): New enum.
[sim_fpu_state](current_mode): New field.
(sim_fpu_current_mode): New define.
(sim_fpu_is_ieee754_2008): New declaration.
(sim_fpu_is_ieee754_1985): New declaration.
(sim_fpu_set_mode): New declaration.
(sim_fpu_classify): New declaration.
Diffstat (limited to 'sim/common/sim-fpu.h')
| -rw-r--r-- | sim/common/sim-fpu.h | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/sim/common/sim-fpu.h b/sim/common/sim-fpu.h index 2a14198..a20b286 100644 --- a/sim/common/sim-fpu.h +++ b/sim/common/sim-fpu.h @@ -163,8 +163,15 @@ typedef enum FIXME: This state is global, but should be moved to SIM_CPU. */ +typedef enum +{ + sim_fpu_ieee754_1985, + sim_fpu_ieee754_2008, +} sim_fpu_mode; + typedef struct _sim_fpu_state { bool quiet_nan_inverted; /* Toggle quiet NaN semantics. */ + sim_fpu_mode current_mode; } sim_fpu_state; @@ -268,6 +275,8 @@ INLINE_SIM_FPU (int) sim_fpu_sqrt (sim_fpu *f, INLINE_SIM_FPU (int) sim_fpu_op_nan (sim_fpu *f, const sim_fpu *l, const sim_fpu *r); +INLINE_SIM_FPU (int) sim_fpu_minmax_nan (sim_fpu *f, + const sim_fpu *l, const sim_fpu *r); @@ -318,7 +327,8 @@ INLINE_SIM_FPU (double) sim_fpu_2d (const sim_fpu *d); /* INLINE_SIM_FPU (void) sim_fpu_f2 (sim_fpu *f, float s); */ INLINE_SIM_FPU (void) sim_fpu_d2 (sim_fpu *f, double d); - +/* IEEE754-2008 classifiction function. */ +INLINE_SIM_FPU (int) sim_fpu_classify (const sim_fpu *f); /* Specific number classes. @@ -367,7 +377,20 @@ INLINE_SIM_FPU (int) sim_fpu_is_ne (const sim_fpu *l, const sim_fpu *r); INLINE_SIM_FPU (int) sim_fpu_is_ge (const sim_fpu *l, const sim_fpu *r); INLINE_SIM_FPU (int) sim_fpu_is_gt (const sim_fpu *l, const sim_fpu *r); +/* Unordered/ordered comparison operators. */ + +INLINE_SIM_FPU (int) sim_fpu_un (int *is, const sim_fpu *l, const sim_fpu *r); +INLINE_SIM_FPU (int) sim_fpu_or (int *is, const sim_fpu *l, const sim_fpu *r); + +INLINE_SIM_FPU (int) sim_fpu_is_un (const sim_fpu *l, const sim_fpu *r); +INLINE_SIM_FPU (int) sim_fpu_is_or (const sim_fpu *l, const sim_fpu *r); + +/* Changes the behaviour of the library to IEEE754-2008 or IEEE754-1985. + The default for the library is IEEE754-1985. */ +INLINE_SIM_FPU (bool) sim_fpu_is_ieee754_1985 (void); +INLINE_SIM_FPU (bool) sim_fpu_is_ieee754_2008 (void); +INLINE_SIM_FPU (void) sim_fpu_set_mode (const sim_fpu_mode m); /* General number class and comparison operators. @@ -411,6 +434,7 @@ extern sim_fpu_state _sim_fpu; between pre-R6 and R6 MIPS cores. */ #define sim_fpu_quiet_nan_inverted _sim_fpu.quiet_nan_inverted +#define sim_fpu_current_mode _sim_fpu.current_mode /* A number of useful constants. */ |