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[174.21.143.238]) by smtp.gmail.com with ESMTPSA id q21sm2485719pfg.131.2020.05.15.12.01.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 May 2020 12:02:00 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH 04/10] softfloat: Name rounding mode enum Date: Fri, 15 May 2020 12:01:47 -0700 Message-Id: <20200515190153.6017-5-richard.henderson@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200515190153.6017-1-richard.henderson@linaro.org> References: <20200515190153.6017-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::541; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x541.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alex.bennee@linaro.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Give the previously unnamed enum a typedef name. Use the packed attribute so that we do not affect the layout of the float_status struct. Use it in the prototypes of relevant functions. Adjust switch statements as necessary to avoid compiler warnings. Signed-off-by: Richard Henderson --- include/fpu/softfloat-helpers.h | 5 +-- include/fpu/softfloat-types.h | 6 ++-- include/fpu/softfloat.h | 39 +++++++++++----------- fpu/softfloat.c | 57 ++++++++++++++++++++------------- target/arm/vfp_helper.c | 4 +-- target/m68k/fpu_helper.c | 6 ++-- 6 files changed, 66 insertions(+), 51 deletions(-) diff --git a/include/fpu/softfloat-helpers.h b/include/fpu/softfloat-helpers.h index 40d32a6d5d..735ed6b653 100644 --- a/include/fpu/softfloat-helpers.h +++ b/include/fpu/softfloat-helpers.h @@ -58,7 +58,8 @@ static inline void set_float_detect_tininess(bool val, float_status *status) status->tininess_before_rounding = val; } -static inline void set_float_rounding_mode(int val, float_status *status) +static inline void set_float_rounding_mode(FloatRoundMode val, + float_status *status) { status->float_rounding_mode = val; } @@ -99,7 +100,7 @@ static inline bool get_float_detect_tininess(float_status *status) return status->tininess_before_rounding; } -static inline int get_float_rounding_mode(float_status *status) +static inline FloatRoundMode get_float_rounding_mode(float_status *status) { return status->float_rounding_mode; } diff --git a/include/fpu/softfloat-types.h b/include/fpu/softfloat-types.h index 874ddd9f93..7680193ebc 100644 --- a/include/fpu/softfloat-types.h +++ b/include/fpu/softfloat-types.h @@ -123,7 +123,7 @@ typedef struct { *Software IEC/IEEE floating-point rounding mode. */ -enum { +typedef enum __attribute__((__packed__)) { float_round_nearest_even = 0, float_round_down = 1, float_round_up = 2, @@ -131,7 +131,7 @@ enum { float_round_ties_away = 4, /* Not an IEEE rounding mode: round to the closest odd mantissa value */ float_round_to_odd = 5, -}; +} FloatRoundMode; /* * Software IEC/IEEE floating-point exception flags. @@ -156,7 +156,7 @@ enum { */ typedef struct float_status { - signed char float_rounding_mode; + FloatRoundMode float_rounding_mode; uint8_t float_exception_flags; signed char floatx80_rounding_precision; bool tininess_before_rounding; diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h index 3f588da7c7..ca75f764aa 100644 --- a/include/fpu/softfloat.h +++ b/include/fpu/softfloat.h @@ -186,9 +186,9 @@ float32 float16_to_float32(float16, bool ieee, float_status *status); float16 float64_to_float16(float64 a, bool ieee, float_status *status); float64 float16_to_float64(float16 a, bool ieee, float_status *status); -int16_t float16_to_int16_scalbn(float16, int, int, float_status *status); -int32_t float16_to_int32_scalbn(float16, int, int, float_status *status); -int64_t float16_to_int64_scalbn(float16, int, int, float_status *status); +int16_t float16_to_int16_scalbn(float16, FloatRoundMode, int, float_status *); +int32_t float16_to_int32_scalbn(float16, FloatRoundMode, int, float_status *); +int64_t float16_to_int64_scalbn(float16, FloatRoundMode, int, float_status *); int16_t float16_to_int16(float16, float_status *status); int32_t float16_to_int32(float16, float_status *status); @@ -198,9 +198,12 @@ int16_t float16_to_int16_round_to_zero(float16, float_status *status); int32_t float16_to_int32_round_to_zero(float16, float_status *status); int64_t float16_to_int64_round_to_zero(float16, float_status *status); -uint16_t float16_to_uint16_scalbn(float16 a, int, int, float_status *status); -uint32_t float16_to_uint32_scalbn(float16 a, int, int, float_status *status); -uint64_t float16_to_uint64_scalbn(float16 a, int, int, float_status *status); +uint16_t float16_to_uint16_scalbn(float16 a, FloatRoundMode, + int, float_status *status); +uint32_t float16_to_uint32_scalbn(float16 a, FloatRoundMode, + int, float_status *status); +uint64_t float16_to_uint64_scalbn(float16 a, FloatRoundMode, + int, float_status *status); uint16_t float16_to_uint16(float16 a, float_status *status); uint32_t float16_to_uint32(float16 a, float_status *status); @@ -298,9 +301,9 @@ float16 float16_default_nan(float_status *status); | Software IEC/IEEE single-precision conversion routines. *----------------------------------------------------------------------------*/ -int16_t float32_to_int16_scalbn(float32, int, int, float_status *status); -int32_t float32_to_int32_scalbn(float32, int, int, float_status *status); -int64_t float32_to_int64_scalbn(float32, int, int, float_status *status); +int16_t float32_to_int16_scalbn(float32, FloatRoundMode, int, float_status *); +int32_t float32_to_int32_scalbn(float32, FloatRoundMode, int, float_status *); +int64_t float32_to_int64_scalbn(float32, FloatRoundMode, int, float_status *); int16_t float32_to_int16(float32, float_status *status); int32_t float32_to_int32(float32, float_status *status); @@ -310,9 +313,9 @@ int16_t float32_to_int16_round_to_zero(float32, float_status *status); int32_t float32_to_int32_round_to_zero(float32, float_status *status); int64_t float32_to_int64_round_to_zero(float32, float_status *status); -uint16_t float32_to_uint16_scalbn(float32, int, int, float_status *status); -uint32_t float32_to_uint32_scalbn(float32, int, int, float_status *status); -uint64_t float32_to_uint64_scalbn(float32, int, int, float_status *status); +uint16_t float32_to_uint16_scalbn(float32, FloatRoundMode, int, float_status *); +uint32_t float32_to_uint32_scalbn(float32, FloatRoundMode, int, float_status *); +uint64_t float32_to_uint64_scalbn(float32, FloatRoundMode, int, float_status *); uint16_t float32_to_uint16(float32, float_status *status); uint32_t float32_to_uint32(float32, float_status *status); @@ -455,9 +458,9 @@ float32 float32_default_nan(float_status *status); | Software IEC/IEEE double-precision conversion routines. *----------------------------------------------------------------------------*/ -int16_t float64_to_int16_scalbn(float64, int, int, float_status *status); -int32_t float64_to_int32_scalbn(float64, int, int, float_status *status); -int64_t float64_to_int64_scalbn(float64, int, int, float_status *status); +int16_t float64_to_int16_scalbn(float64, FloatRoundMode, int, float_status *); +int32_t float64_to_int32_scalbn(float64, FloatRoundMode, int, float_status *); +int64_t float64_to_int64_scalbn(float64, FloatRoundMode, int, float_status *); int16_t float64_to_int16(float64, float_status *status); int32_t float64_to_int32(float64, float_status *status); @@ -467,9 +470,9 @@ int16_t float64_to_int16_round_to_zero(float64, float_status *status); int32_t float64_to_int32_round_to_zero(float64, float_status *status); int64_t float64_to_int64_round_to_zero(float64, float_status *status); -uint16_t float64_to_uint16_scalbn(float64, int, int, float_status *status); -uint32_t float64_to_uint32_scalbn(float64, int, int, float_status *status); -uint64_t float64_to_uint64_scalbn(float64, int, int, float_status *status); +uint16_t float64_to_uint16_scalbn(float64, FloatRoundMode, int, float_status *); +uint32_t float64_to_uint32_scalbn(float64, FloatRoundMode, int, float_status *); +uint64_t float64_to_uint64_scalbn(float64, FloatRoundMode, int, float_status *); uint16_t float64_to_uint16(float64, float_status *status); uint32_t float64_to_uint32(float64, float_status *status); diff --git a/fpu/softfloat.c b/fpu/softfloat.c index 65d457a548..93d8a03de6 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -759,6 +759,8 @@ static FloatParts round_canonical(FloatParts p, float_status *s, case float_round_to_odd: inc = frac & frac_lsb ? 0 : round_mask; break; + default: + break; } flags |= float_flag_inexact; frac += inc; @@ -1928,7 +1930,7 @@ float32 float64_to_float32(float64 a, float_status *s) * Arithmetic. */ -static FloatParts round_to_int(FloatParts a, int rmode, +static FloatParts round_to_int(FloatParts a, FloatRoundMode rmode, int scale, float_status *s) { switch (a.cls) { @@ -2061,8 +2063,8 @@ float64 float64_round_to_int(float64 a, float_status *s) * is returned. */ -static int64_t round_to_int_and_pack(FloatParts in, int rmode, int scale, - int64_t min, int64_t max, +static int64_t round_to_int_and_pack(FloatParts in, FloatRoundMode rmode, + int scale, int64_t min, int64_t max, float_status *s) { uint64_t r; @@ -2107,63 +2109,63 @@ static int64_t round_to_int_and_pack(FloatParts in, int rmode, int scale, } } -int16_t float16_to_int16_scalbn(float16 a, int rmode, int scale, +int16_t float16_to_int16_scalbn(float16 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_int_and_pack(float16_unpack_canonical(a, s), rmode, scale, INT16_MIN, INT16_MAX, s); } -int32_t float16_to_int32_scalbn(float16 a, int rmode, int scale, +int32_t float16_to_int32_scalbn(float16 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_int_and_pack(float16_unpack_canonical(a, s), rmode, scale, INT32_MIN, INT32_MAX, s); } -int64_t float16_to_int64_scalbn(float16 a, int rmode, int scale, +int64_t float16_to_int64_scalbn(float16 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_int_and_pack(float16_unpack_canonical(a, s), rmode, scale, INT64_MIN, INT64_MAX, s); } -int16_t float32_to_int16_scalbn(float32 a, int rmode, int scale, +int16_t float32_to_int16_scalbn(float32 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_int_and_pack(float32_unpack_canonical(a, s), rmode, scale, INT16_MIN, INT16_MAX, s); } -int32_t float32_to_int32_scalbn(float32 a, int rmode, int scale, +int32_t float32_to_int32_scalbn(float32 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_int_and_pack(float32_unpack_canonical(a, s), rmode, scale, INT32_MIN, INT32_MAX, s); } -int64_t float32_to_int64_scalbn(float32 a, int rmode, int scale, +int64_t float32_to_int64_scalbn(float32 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_int_and_pack(float32_unpack_canonical(a, s), rmode, scale, INT64_MIN, INT64_MAX, s); } -int16_t float64_to_int16_scalbn(float64 a, int rmode, int scale, +int16_t float64_to_int16_scalbn(float64 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_int_and_pack(float64_unpack_canonical(a, s), rmode, scale, INT16_MIN, INT16_MAX, s); } -int32_t float64_to_int32_scalbn(float64 a, int rmode, int scale, +int32_t float64_to_int32_scalbn(float64 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_int_and_pack(float64_unpack_canonical(a, s), rmode, scale, INT32_MIN, INT32_MAX, s); } -int64_t float64_to_int64_scalbn(float64 a, int rmode, int scale, +int64_t float64_to_int64_scalbn(float64 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_int_and_pack(float64_unpack_canonical(a, s), @@ -2273,8 +2275,9 @@ int64_t float64_to_int64_round_to_zero(float64 a, float_status *s) * flag. */ -static uint64_t round_to_uint_and_pack(FloatParts in, int rmode, int scale, - uint64_t max, float_status *s) +static uint64_t round_to_uint_and_pack(FloatParts in, FloatRoundMode rmode, + int scale, uint64_t max, + float_status *s) { int orig_flags = get_float_exception_flags(s); FloatParts p = round_to_int(in, rmode, scale, s); @@ -2319,63 +2322,63 @@ static uint64_t round_to_uint_and_pack(FloatParts in, int rmode, int scale, } } -uint16_t float16_to_uint16_scalbn(float16 a, int rmode, int scale, +uint16_t float16_to_uint16_scalbn(float16 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_uint_and_pack(float16_unpack_canonical(a, s), rmode, scale, UINT16_MAX, s); } -uint32_t float16_to_uint32_scalbn(float16 a, int rmode, int scale, +uint32_t float16_to_uint32_scalbn(float16 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_uint_and_pack(float16_unpack_canonical(a, s), rmode, scale, UINT32_MAX, s); } -uint64_t float16_to_uint64_scalbn(float16 a, int rmode, int scale, +uint64_t float16_to_uint64_scalbn(float16 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_uint_and_pack(float16_unpack_canonical(a, s), rmode, scale, UINT64_MAX, s); } -uint16_t float32_to_uint16_scalbn(float32 a, int rmode, int scale, +uint16_t float32_to_uint16_scalbn(float32 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_uint_and_pack(float32_unpack_canonical(a, s), rmode, scale, UINT16_MAX, s); } -uint32_t float32_to_uint32_scalbn(float32 a, int rmode, int scale, +uint32_t float32_to_uint32_scalbn(float32 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_uint_and_pack(float32_unpack_canonical(a, s), rmode, scale, UINT32_MAX, s); } -uint64_t float32_to_uint64_scalbn(float32 a, int rmode, int scale, +uint64_t float32_to_uint64_scalbn(float32 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_uint_and_pack(float32_unpack_canonical(a, s), rmode, scale, UINT64_MAX, s); } -uint16_t float64_to_uint16_scalbn(float64 a, int rmode, int scale, +uint16_t float64_to_uint16_scalbn(float64 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_uint_and_pack(float64_unpack_canonical(a, s), rmode, scale, UINT16_MAX, s); } -uint32_t float64_to_uint32_scalbn(float64 a, int rmode, int scale, +uint32_t float64_to_uint32_scalbn(float64 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_uint_and_pack(float64_unpack_canonical(a, s), rmode, scale, UINT32_MAX, s); } -uint64_t float64_to_uint64_scalbn(float64 a, int rmode, int scale, +uint64_t float64_to_uint64_scalbn(float64 a, FloatRoundMode rmode, int scale, float_status *s) { return round_to_uint_and_pack(float64_unpack_canonical(a, s), @@ -5715,6 +5718,11 @@ floatx80 floatx80_round_to_int(floatx80 a, float_status *status) return aSign ? packFloatx80( 1, 0, 0 ) : packFloatx80( 0, 0x3FFF, UINT64_C(0x8000000000000000)); + + case float_round_to_zero: + break; + default: + g_assert_not_reached(); } return packFloatx80( aSign, 0, 0 ); } @@ -7047,6 +7055,9 @@ float128 float128_round_to_int(float128 a, float_status *status) case float_round_to_odd: return packFloat128(aSign, 0x3FFF, 0, 0); + + case float_round_to_zero: + break; } return packFloat128( aSign, 0, 0, 0 ); } diff --git a/target/arm/vfp_helper.c b/target/arm/vfp_helper.c index 42625747d1..0920694764 100644 --- a/target/arm/vfp_helper.c +++ b/target/arm/vfp_helper.c @@ -697,9 +697,9 @@ static bool round_to_inf(float_status *fpst, bool sign_bit) return sign_bit; case float_round_to_zero: /* Round to Zero */ return false; + default: + g_assert_not_reached(); } - - g_assert_not_reached(); } uint32_t HELPER(recpe_f16)(uint32_t input, void *fpstp) diff --git a/target/m68k/fpu_helper.c b/target/m68k/fpu_helper.c index 4137542ec0..36e6c704d1 100644 --- a/target/m68k/fpu_helper.c +++ b/target/m68k/fpu_helper.c @@ -149,7 +149,7 @@ void cpu_m68k_set_fpcr(CPUM68KState *env, uint32_t val) void HELPER(fitrunc)(CPUM68KState *env, FPReg *res, FPReg *val) { - int rounding_mode = get_float_rounding_mode(&env->fp_status); + FloatRoundMode rounding_mode = get_float_rounding_mode(&env->fp_status); set_float_rounding_mode(float_round_to_zero, &env->fp_status); res->d = floatx80_round_to_int(val->d, &env->fp_status); set_float_rounding_mode(rounding_mode, &env->fp_status); @@ -300,7 +300,7 @@ void HELPER(fdmul)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1) void HELPER(fsglmul)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1) { - int rounding_mode = get_float_rounding_mode(&env->fp_status); + FloatRoundMode rounding_mode = get_float_rounding_mode(&env->fp_status); floatx80 a, b; PREC_BEGIN(32); @@ -333,7 +333,7 @@ void HELPER(fddiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1) void HELPER(fsgldiv)(CPUM68KState *env, FPReg *res, FPReg *val0, FPReg *val1) { - int rounding_mode = get_float_rounding_mode(&env->fp_status); + FloatRoundMode rounding_mode = get_float_rounding_mode(&env->fp_status); floatx80 a, b; PREC_BEGIN(32); -- 2.20.1