/* * In this file we wrap QEMU FP functions to look like softfloat/testfloat's, * so that we can use the testfloat infrastructure as-is. * * This file must be included directly from fp-test.c. We could compile it * separately, but it would be tedious to add declarations for all the wrappers. */ static signed char sf_tininess_to_qemu(uint_fast8_t mode) { switch (mode) { case softfloat_tininess_beforeRounding: return float_tininess_before_rounding; case softfloat_tininess_afterRounding: return float_tininess_after_rounding; default: g_assert_not_reached(); } } static signed char sf_rounding_to_qemu(uint_fast8_t mode) { switch (mode) { case softfloat_round_near_even: return float_round_nearest_even; case softfloat_round_minMag: return float_round_to_zero; case softfloat_round_min: return float_round_down; case softfloat_round_max: return float_round_up; case softfloat_round_near_maxMag: return float_round_ties_away; case softfloat_round_odd: return float_round_to_odd; default: g_assert_not_reached(); } } static uint_fast8_t qemu_flags_to_sf(uint8_t qflags) { uint_fast8_t ret = 0; if (qflags & float_flag_invalid) { ret |= softfloat_flag_invalid; } if (qflags & float_flag_divbyzero) { ret |= softfloat_flag_infinite; } if (qflags & float_flag_overflow) { ret |= softfloat_flag_overflow; } if (qflags & float_flag_underflow) { ret |= softfloat_flag_underflow; } if (qflags & float_flag_inexact) { ret |= softfloat_flag_inexact; } return ret; } /* * floatx80 and float128 cannot be cast between qemu and softfloat, because * in softfloat the order of the fields depends on the host's endianness. */ static extFloat80_t qemu_to_soft80(floatx80 a) { extFloat80_t ret; ret.signif = a.low; ret.signExp = a.high; return ret; } static floatx80 soft_to_qemu80(extFloat80_t a) { floatx80 ret; ret.low = a.signif; ret.high = a.signExp; return ret; } static float128_t qemu_to_soft128(float128 a) { float128_t ret; struct uint128 *to = (struct uint128 *)&ret; to->v0 = a.low; to->v64 = a.high; return ret; } static float128 soft_to_qemu128(float128_t a) { struct uint128 *from = (struct uint128 *)&a; float128 ret; ret.low = from->v0; ret.high = from->v64; return ret; } /* conversions */ #define WRAP_SF_TO_SF_IEEE(name, func, a_type, b_type) \ static b_type##_t name(a_type##_t a) \ { \ a_type *ap = (a_type *)&a; \ b_type ret; \ \ ret = func(*ap, true, &qsf); \ return *(b_type##_t *)&ret; \ } WRAP_SF_TO_SF_IEEE(qemu_f16_to_f32, float16_to_float32, float16, float32) WRAP_SF_TO_SF_IEEE(qemu_f16_to_f64, float16_to_float64, float16, float64) WRAP_SF_TO_SF_IEEE(qemu_f32_to_f16, float32_to_float16, float32, float16) WRAP_SF_TO_SF_IEEE(qemu_f64_to_f16, float64_to_float16, float64, float16) #undef WRAP_SF_TO_SF_IEEE #define WRAP_SF_TO_SF(name, func, a_type, b_type) \ static b_type##_t name(a_type##_t a) \ { \ a_type *ap = (a_type *)&a; \ b_type ret; \ \ ret = func(*ap, &qsf); \ return *(b_type##_t *)&ret; \ } WRAP_SF_TO_SF(qemu_f32_to_f64, float32_to_float64, float32, float64) WRAP_SF_TO_SF(qemu_f64_to_f32, float64_to_float32, float64, float32) #undef WRAP_SF_TO_SF #define WRAP_SF_TO_80(name, func, type) \ static void name(type##_t a, extFloat80_t *res) \ { \ floatx80 ret; \ type *ap = (type *)&a; \ \ ret = func(*ap, &qsf); \ *res = qemu_to_soft80(ret); \ } WRAP_SF_TO_80(qemu_f32_to_extF80M, float32_to_floatx80, float32) WRAP_SF_TO_80(qemu_f64_to_extF80M, float64_to_floatx80, float64) #undef WRAP_SF_TO_80 #define WRAP_SF_TO_128(name, func, type) \ static void name(type##_t a, float128_t *res) \ { \ float128 ret; \ type *ap = (type *)&a; \ \ ret = func(*ap, &qsf); \ *res = qemu_to_soft128(ret); \ } WRAP_SF_TO_128(qemu_f32_to_f128M, float32_to_float128, float32) WRAP_SF_TO_128(qemu_f64_to_f128M, float64_to_float128, float64) #undef WRAP_SF_TO_128 /* Note: exact is ignored since qemu's softfloat assumes it is set */ #define WRAP_SF_TO_INT(name, func, type, fast_type) \ static fast_type name(type##_t a, uint_fast8_t round, bool exact) \ { \ type *ap = (type *)&a; \ \ qsf.float_rounding_mode = sf_rounding_to_qemu(round); \ return func(*ap, &qsf); \ } WRAP_SF_TO_INT(qemu_f16_to_ui32, float16_to_uint32, float16, uint_fast32_t) WRAP_SF_TO_INT(qemu_f16_to_ui64, float16_to_uint64, float16, uint_fast64_t) WRAP_SF_TO_INT(qemu_f32_to_ui32, float32_to_uint32, float32, uint_fast32_t) WRAP_SF_TO_INT(qemu_f32_to_ui64, float32_to_uint64, float32, uint_fast64_t) WRAP_SF_TO_INT(qemu_f64_to_ui32, float64_to_uint32, float64, uint_fast32_t) WRAP_SF_TO_INT(qemu_f64_to_ui64, float64_to_uint64, float64, uint_fast64_t) WRAP_SF_TO_INT(qemu_f16_to_i32, float16_to_int32, float16, int_fast32_t) WRAP_SF_TO_INT(qemu_f16_to_i64, float16_to_int64, float16, int_fast64_t) WRAP_SF_TO_INT(qemu_f32_to_i32, float32_to_int32, float32, int_fast32_t) WRAP_SF_TO_INT(qemu_f32_to_i64, float32_to_int64, float32, int_fast64_t) WRAP_SF_TO_INT(qemu_f64_to_i32, float64_to_int32, float64, int_fast32_t) WRAP_SF_TO_INT(qemu_f64_to_i64, float64_to_int64, float64, int_fast64_t) #undef WRAP_SF_TO_INT /* Note: exact is ignored since qemu's softfloat assumes it is set */ #define WRAP_SF_TO_INT_MINMAG(name, func, type, fast_type) \ static fast_type name(type##_t a, bool exact) \ { \ type *ap = (type *)&a; \ \ return func(*ap, &qsf); \ } WRAP_SF_TO_INT_MINMAG(qemu_f16_to_ui32_r_minMag, float16_to_uint32_round_to_zero, float16, uint_fast32_t) WRAP_SF_TO_INT_MINMAG(qemu_f16_to_ui64_r_minMag, float16_to_uint64_round_to_zero, float16, uint_fast64_t) WRAP_SF_TO_INT_MINMAG(qemu_f16_to_i32_r_minMag, float16_to_int32_round_to_zero, float16, int_fast32_t) WRAP_SF_TO_INT_MINMAG(qemu_f16_to_i64_r_minMag, float16_to_int64_round_to_zero, float16, int_fast64_t) WRAP_SF_TO_INT_MINMAG(qemu_f32_to_ui32_r_minMag, float32_to_uint32_round_to_zero, float32, uint_fast32_t) WRAP_SF_TO_INT_MINMAG(qemu_f32_to_ui64_r_minMag, float32_to_uint64_round_to_zero, float32, uint_fast64_t) WRAP_SF_TO_INT_MINMAG(qemu_f32_to_i32_r_minMag, float32_to_int32_round_to_zero, float32, int_fast32_t) WRAP_SF_TO_INT_MINMAG(qemu_f32_to_i64_r_minMag, float32_to_int64_round_to_zero, float32, int_fast64_t) WRAP_SF_TO_INT_MINMAG(qemu_f64_to_ui32_r_minMag, float64_to_uint32_round_to_zero, float64, uint_fast32_t) WRAP_SF_TO_INT_MINMAG(qemu_f64_to_ui64_r_minMag, float64_to_uint64_round_to_zero, float64, uint_fast64_t) WRAP_SF_TO_INT_MINMAG(qemu_f64_to_i32_r_minMag, float64_to_int32_round_to_zero, float64, int_fast32_t) WRAP_SF_TO_INT_MINMAG(qemu_f64_to_i64_r_minMag, float64_to_int64_round_to_zero, float64, int_fast64_t) #undef WRAP_SF_TO_INT_MINMAG #define WRAP_80_TO_SF(name, func, type) \ static type##_t name(const extFloat80_t *ap) \ { \ floatx80 a; \ type ret; \ \ a = soft_to_qemu80(*ap); \ ret = func(a, &qsf); \ return *(type##_t *)&ret; \ } WRAP_80_TO_SF(qemu_extF80M_to_f32, floatx80_to_float32, float32) WRAP_80_TO_SF(qemu_extF80M_to_f64, floatx80_to_float64, float64) #undef WRAP_80_TO_SF #define WRAP_128_TO_SF(name, func, type) \ static type##_t name(const float128_t *ap) \ { \ float128 a; \ type ret; \ \ a = soft_to_qemu128(*ap); \ ret = func(a, &qsf); \ return *(type##_t *)&ret; \ } WRAP_128_TO_SF(qemu_f128M_to_f32, float128_to_float32, float32) WRAP_128_TO_SF(qemu_f128M_to_f64, float128_to_float64, float64) #undef WRAP_128_TO_SF static void qemu_extF80M_to_f128M(const extFloat80_t *from, float128_t *to) { floatx80 qfrom; float128 qto; qfrom = soft_to_qemu80(*from); qto = floatx80_to_float128(qfrom, &qsf); *to = qemu_to_soft128(qto); } static void qemu_f128M_to_extF80M(const float128_t *from, extFloat80_t *to) { float128 qfrom; floatx80 qto; qfrom = soft_to_qemu128(*from); qto = float128_to_floatx80(qfrom, &qsf); *to = qemu_to_soft80(qto); } #define WRAP_INT_TO_SF(name, func, int_type, type) \ static type##_t name(int_type a) \ { \ type ret; \ \ ret = func(a, &qsf); \ return *(type##_t *)&ret; \ } WRAP_INT_TO_SF(qemu_ui32_to_f16, uint32_to_float16, uint32_t, float16) WRAP_INT_TO_SF(qemu_ui32_to_f32, uint32_to_float32, uint32_t, float32) WRAP_INT_TO_SF(qemu_ui32_to_f64, uint32_to_float64, uint32_t, float64) WRAP_INT_TO_SF(qemu_ui64_to_f16, uint64_to_float16, uint64_t, float16) WRAP_INT_TO_SF(qemu_ui64_to_f32, uint64_to_float32, uint64_t, float32) WRAP_INT_TO_SF(qemu_ui64_to_f64, uint64_to_float64, uint64_t, float64) WRAP_INT_TO_SF(qemu_i32_to_f16, int32_to_float16, int32_t, float16) WRAP_INT_TO_SF(qemu_i32_to_f32, int32_to_float32, int32_t, float32) WRAP_INT_TO_SF(qemu_i32_to_f64, int32_to_float64, int32_t, float64) WRAP_INT_TO_SF(qemu_i64_to_f16, int64_to_float16, int64_t, float16) WRAP_INT_TO_SF(qemu_i64_to_f32, int64_to_float32, int64_t, float32) WRAP_INT_TO_SF(qemu_i64_to_f64, int64_to_float64, int64_t, float64) #undef WRAP_INT_TO_SF #define WRAP_INT_TO_80(name, func, int_type) \ static void name(int_type a, extFloat80_t *res) \ { \ floatx80 ret; \ \ ret = func(a, &qsf); \ *res = qemu_to_soft80(ret); \ } WRAP_INT_TO_80(qemu_i32_to_extF80M, int32_to_floatx80, int32_t) WRAP_INT_TO_80(qemu_i64_to_extF80M, int64_to_floatx80, int64_t) #undef WRAP_INT_TO_80 /* Note: exact is ignored since qemu's softfloat assumes it is set */ #define WRAP_80_TO_INT(name, func, fast_type) \ static fast_type name(const extFloat80_t *ap, uint_fast8_t round, \ bool exact) \ { \ floatx80 a; \ \ a = soft_to_qemu80(*ap); \ qsf.float_rounding_mode = sf_rounding_to_qemu(round); \ return func(a, &qsf); \ } WRAP_80_TO_INT(qemu_extF80M_to_i32, floatx80_to_int32, int_fast32_t) WRAP_80_TO_INT(qemu_extF80M_to_i64, floatx80_to_int64, int_fast64_t) #undef WRAP_80_TO_INT /* Note: exact is ignored since qemu's softfloat assumes it is set */ #define WRAP_80_TO_INT_MINMAG(name, func, fast_type) \ static fast_type name(const extFloat80_t *ap, bool exact) \ { \ floatx80 a; \ \ a = soft_to_qemu80(*ap); \ return func(a, &qsf); \ } WRAP_80_TO_INT_MINMAG(qemu_extF80M_to_i32_r_minMag, floatx80_to_int32_round_to_zero, int_fast32_t) WRAP_80_TO_INT_MINMAG(qemu_extF80M_to_i64_r_minMag, floatx80_to_int64_round_to_zero, int_fast64_t) #undef WRAP_80_TO_INT_MINMAG /* Note: exact is ignored since qemu's softfloat assumes it is set */ #define WRAP_128_TO_INT(name, func, fast_type) \ static fast_type name(const float128_t *ap, uint_fast8_t round, \ bool exact) \ { \ float128 a; \ \ a = soft_to_qemu128(*ap); \ qsf.float_rounding_mode = sf_rounding_to_qemu(round); \ return func(a, &qsf); \ } WRAP_128_TO_INT(qemu_f128M_to_i32, float128_to_int32, int_fast32_t) WRAP_128_TO_INT(qemu_f128M_to_i64, float128_to_int64, int_fast64_t) WRAP_128_TO_INT(qemu_f128M_to_ui64, float128_to_uint64, uint_fast64_t) #undef WRAP_128_TO_INT /* Note: exact is ignored since qemu's softfloat assumes it is set */ #define WRAP_128_TO_INT_MINMAG(name, func, fast_type) \ static fast_type name(const float128_t *ap, bool exact) \ { \ float128 a; \ \ a = soft_to_qemu128(*ap); \ return func(a, &qsf); \ } WRAP_128_TO_INT_MINMAG(qemu_f128M_to_i32_r_minMag, float128_to_int32_round_to_zero, int_fast32_t) WRAP_128_TO_INT_MINMAG(qemu_f128M_to_i64_r_minMag, float128_to_int64_round_to_zero, int_fast64_t) WRAP_128_TO_INT_MINMAG(qemu_f128M_to_ui32_r_minMag, float128_to_uint32_round_to_zero, uint_fast32_t) WRAP_128_TO_INT_MINMAG(qemu_f128M_to_ui64_r_minMag, float128_to_uint64_round_to_zero, uint_fast64_t) #undef WRAP_128_TO_INT_MINMAG #define WRAP_INT_TO_128(name, func, int_type) \ static void name(int_type a, float128_t *res) \ { \ float128 ret; \ \ ret = func(a, &qsf); \ *res = qemu_to_soft128(ret); \ } WRAP_INT_TO_128(qemu_ui64_to_f128M, uint64_to_float128, uint64_t) WRAP_INT_TO_128(qemu_i32_to_f128M, int32_to_float128, int32_t) WRAP_INT_TO_128(qemu_i64_to_f128M, int64_to_float128, int64_t) #undef WRAP_INT_TO_128 /* Note: exact is ignored since qemu's softfloat assumes it is set */ #define WRAP_ROUND_TO_INT(name, func, type) \ static type##_t name(type##_t a, uint_fast8_t round, bool exact) \ { \ type *ap = (type *)&a; \ type ret; \ \ qsf.float_rounding_mode = sf_rounding_to_qemu(round); \ ret = func(*ap, &qsf); \ return *(type##_t *)&ret; \ } WRAP_ROUND_TO_INT(qemu_f16_roundToInt, float16_round_to_int, float16) WRAP_ROUND_TO_INT(qemu_f32_roundToInt, float32_round_to_int, float32) WRAP_ROUND_TO_INT(qemu_f64_roundToInt, float64_round_to_int, float64) #undef WRAP_ROUND_TO_INT static void qemu_extF80M_roundToInt(const extFloat80_t *ap, uint_fast8_t round, bool exact, extFloat80_t *res) { floatx80 a; floatx80 ret; a = soft_to_qemu80(*ap); qsf.float_rounding_mode = sf_rounding_to_qemu(round); ret = floatx80_round_to_int(a, &qsf); *res = qemu_to_soft80(ret); } static void qemu_f128M_roundToInt(const float128_t *ap, uint_fast8_t round, bool exact, float128_t *res) { float128 a; float128 ret; a = soft_to_qemu128(*ap); qsf.float_rounding_mode = sf_rounding_to_qemu(round); ret = float128_round_to_int(a, &qsf); *res = qemu_to_soft128(ret); } /* operations */ #define WRAP1(name, func, type) \ static type##_t name(type##_t a) \ { \ type *ap = (type *)&a; \ type ret; \ \ ret = func(*ap, &qsf); \ return *(type##_t *)&ret; \ } #define WRAP2(name, func, type) \ static type##_t name(type##_t a, type##_t b) \ { \ type *ap = (type *)&a; \ type *bp = (type *)&b; \ type ret; \ \ ret = func(*ap, *bp, &qsf); \ return *(type##_t *)&ret; \ } #define WRAP_COMMON_OPS(b) \ WRAP1(qemu_f##b##_sqrt, float##b##_sqrt, float##b) \ WRAP2(qemu_f##b##_add, float##b##_add, float##b) \ WRAP2(qemu_f##b##_sub, float##b##_sub, float##b) \ WRAP2(qemu_f##b##_mul, float##b##_mul, float##b) \ WRAP2(qemu_f##b##_div, float##b##_div, float##b) WRAP_COMMON_OPS(16) WRAP_COMMON_OPS(32) WRAP_COMMON_OPS(64) #undef WRAP_COMMON WRAP2(qemu_f32_rem, float32_rem, float32) WRAP2(qemu_f64_rem, float64_rem, float64) #undef WRAP2 #undef WRAP1 #define WRAP1_80(name, func) \ static void name(const extFloat80_t *ap, extFloat80_t *res) \ { \ floatx80 a; \ floatx80 ret; \ \ a = soft_to_qemu80(*ap); \ ret = func(a, &qsf); \ *res = qemu_to_soft80(ret); \ } WRAP1_80(qemu_extF80M_sqrt, floatx80_sqrt) #undef WRAP1_80 #define WRAP1_128(name, func) \ static void name(const float128_t *ap, float128_t *res) \ { \ float128 a; \ float128 ret; \ \ a = soft_to_qemu128(*ap); \ ret = func(a, &qsf); \ *res = qemu_to_soft128(ret); \ } WRAP1_128(qemu_f128M_sqrt, float128_sqrt) #undef WRAP1_128 #define WRAP2_80(name, func) \ static void name(const extFloat80_t *ap, const extFloat80_t *bp, \ extFloat80_t *res) \ { \ floatx80 a; \ floatx80 b; \ floatx80 ret; \ \ a = soft_to_qemu80(*ap); \ b = soft_to_qemu80(*bp); \ ret = func(a, b, &qsf); \ *res = qemu_to_soft80(ret); \ } WRAP2_80(qemu_extF80M_add, floatx80_add) WRAP2_80(qemu_extF80M_sub, floatx80_sub) WRAP2_80(qemu_extF80M_mul, floatx80_mul) WRAP2_80(qemu_extF80M_div, floatx80_div) WRAP2_80(qemu_extF80M_rem, floatx80_rem) #undef WRAP2_80 #define WRAP2_128(name, func) \ static void name(const float128_t *ap, const float128_t *bp, \ float128_t *res) \ { \ float128 a; \ float128 b; \ float128 ret; \ \ a = soft_to_qemu128(*ap); \ b = soft_to_qemu128(*bp); \ ret = func(a, b, &qsf); \ *res = qemu_to_soft128(ret); \ } WRAP2_128(qemu_f128M_add, float128_add) WRAP2_128(qemu_f128M_sub, float128_sub) WRAP2_128(qemu_f128M_mul, float128_mul) WRAP2_128(qemu_f128M_div, float128_div) WRAP2_128(qemu_f128M_rem, float128_rem) #undef WRAP2_128 #define WRAP_MULADD(name, func, type) \ static type##_t name(type##_t a, type##_t b, type##_t c) \ { \ type *ap = (type *)&a; \ type *bp = (type *)&b; \ type *cp = (type *)&c; \ type ret; \ \ ret = func(*ap, *bp, *cp, 0, &qsf); \ return *(type##_t *)&ret; \ } WRAP_MULADD(qemu_f16_mulAdd, float16_muladd, float16) WRAP_MULADD(qemu_f32_mulAdd, float32_muladd, float32) WRAP_MULADD(qemu_f64_mulAdd, float64_muladd, float64) #undef WRAP_MULADD #define WRAP_CMP16(name, func, retcond) \ static bool name(float16_t a, float16_t b) \ { \ float16 *ap = (float16 *)&a; \ float16 *bp = (float16 *)&b; \ int ret; \ \ ret = func(*ap, *bp, &qsf); \ return retcond; \ } WRAP_CMP16(qemu_f16_eq_signaling, float16_compare, ret == 0) WRAP_CMP16(qemu_f16_eq, float16_compare_quiet, ret == 0) WRAP_CMP16(qemu_f16_le, float16_compare, ret <= 0) WRAP_CMP16(qemu_f16_lt, float16_compare, ret < 0) WRAP_CMP16(qemu_f16_le_quiet, float16_compare_quiet, ret <= 0) WRAP_CMP16(qemu_f16_lt_quiet, float16_compare_quiet, ret < 0) #undef WRAP_CMP16 #define WRAP_CMP(name, func, type) \ static bool name(type##_t a, type##_t b) \ { \ type *ap = (type *)&a; \ type *bp = (type *)&b; \ \ return !!func(*ap, *bp, &qsf); \ } #define GEN_WRAP_CMP(b) \ WRAP_CMP(qemu_f##b##_eq_signaling, float##b##_eq, float##b) \ WRAP_CMP(qemu_f##b##_eq, float##b##_eq_quiet, float##b) \ WRAP_CMP(qemu_f##b##_le, float##b##_le, float##b) \ WRAP_CMP(qemu_f##b##_lt, float##b##_lt, float##b) \ WRAP_CMP(qemu_f##b##_le_quiet, float##b##_le_quiet, float##b) \ WRAP_CMP(qemu_f##b##_lt_quiet, float##b##_lt_quiet, float##b) GEN_WRAP_CMP(32) GEN_WRAP_CMP(64) #undef GEN_WRAP_CMP #undef WRAP_CMP #define WRAP_CMP80(name, func) \ static bool name(const extFloat80_t *ap, const extFloat80_t *bp) \ { \ floatx80 a; \ floatx80 b; \ \ a = soft_to_qemu80(*ap); \ b = soft_to_qemu80(*bp); \ return !!func(a, b, &qsf); \ } WRAP_CMP80(qemu_extF80M_eq_signaling, floatx80_eq) WRAP_CMP80(qemu_extF80M_eq, floatx80_eq_quiet) WRAP_CMP80(qemu_extF80M_le, floatx80_le) WRAP_CMP80(qemu_extF80M_lt, floatx80_lt) WRAP_CMP80(qemu_extF80M_le_quiet, floatx80_le_quiet) WRAP_CMP80(qemu_extF80M_lt_quiet, floatx80_le_quiet) #undef WRAP_CMP80 #define WRAP_CMP128(name, func) \ static bool name(const float128_t *ap, const float128_t *bp) \ { \ float128 a; \ float128 b; \ \ a = soft_to_qemu128(*ap); \ b = soft_to_qemu128(*bp); \ return !!func(a, b, &qsf); \ } WRAP_CMP128(qemu_f128M_eq_signaling, float128_eq) WRAP_CMP128(qemu_f128M_eq, float128_eq_quiet) WRAP_CMP128(qemu_f128M_le, float128_le) WRAP_CMP128(qemu_f128M_lt, float128_lt) WRAP_CMP128(qemu_f128M_le_quiet, float128_le_quiet) WRAP_CMP128(qemu_f128M_lt_quiet, float128_lt_quiet) #undef WRAP_CMP128