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target/arm: Improve arm_rmode_to_sf

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Use proper enumeration types for input and output.
Use a const array to perform the mapping, with an
assert that the input is valid.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-02-25 10:48:08 -10:00
parent ab9ced73fa
commit 6ce21abd40
3 changed files with 18 additions and 29 deletions
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12
target/arm/internals.h
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@ -193,16 +193,22 @@ void arm_restore_state_to_opc(CPUState *cs,
void arm_cpu_synchronize_from_tb(CPUState *cs, const TranslationBlock *tb);
#endif /* CONFIG_TCG */
enum arm_fprounding {
typedef enum ARMFPRounding {
FPROUNDING_TIEEVEN,
FPROUNDING_POSINF,
FPROUNDING_NEGINF,
FPROUNDING_ZERO,
FPROUNDING_TIEAWAY,
FPROUNDING_ODD
};
} ARMFPRounding;
int arm_rmode_to_sf(int rmode);
extern const FloatRoundMode arm_rmode_to_sf_map[6];
static inline FloatRoundMode arm_rmode_to_sf(ARMFPRounding rmode)
{
assert((unsigned)rmode < ARRAY_SIZE(arm_rmode_to_sf_map));
return arm_rmode_to_sf_map[rmode];
}
static inline void aarch64_save_sp(CPUARMState *env, int el)
{