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3789 lines
145 KiB
C
3789 lines
145 KiB
C
/*
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* PowerPC floating point and SPE emulation helpers for QEMU.
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*
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* Copyright (c) 2003-2007 Jocelyn Mayer
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "cpu.h"
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#include "exec/helper-proto.h"
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#include "exec/exec-all.h"
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#include "internal.h"
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#include "fpu/softfloat.h"
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static inline float128 float128_snan_to_qnan(float128 x)
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{
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float128 r;
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r.high = x.high | 0x0000800000000000;
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r.low = x.low;
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return r;
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}
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#define float64_snan_to_qnan(x) ((x) | 0x0008000000000000ULL)
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#define float32_snan_to_qnan(x) ((x) | 0x00400000)
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#define float16_snan_to_qnan(x) ((x) | 0x0200)
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static inline float32 bfp32_neg(float32 a)
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{
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if (unlikely(float32_is_any_nan(a))) {
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return a;
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} else {
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return float32_chs(a);
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}
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}
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static inline bool fp_exceptions_enabled(CPUPPCState *env)
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{
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#ifdef CONFIG_USER_ONLY
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return true;
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#else
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return (env->msr & ((1U << MSR_FE0) | (1U << MSR_FE1))) != 0;
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#endif
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}
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/*****************************************************************************/
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/* Floating point operations helpers */
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/*
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* This is the non-arithmatic conversion that happens e.g. on loads.
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* In the Power ISA pseudocode, this is called DOUBLE.
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*/
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uint64_t helper_todouble(uint32_t arg)
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{
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uint32_t abs_arg = arg & 0x7fffffff;
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uint64_t ret;
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if (likely(abs_arg >= 0x00800000)) {
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if (unlikely(extract32(arg, 23, 8) == 0xff)) {
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/* Inf or NAN. */
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ret = (uint64_t)extract32(arg, 31, 1) << 63;
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ret |= (uint64_t)0x7ff << 52;
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ret |= (uint64_t)extract32(arg, 0, 23) << 29;
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} else {
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/* Normalized operand. */
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ret = (uint64_t)extract32(arg, 30, 2) << 62;
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ret |= ((extract32(arg, 30, 1) ^ 1) * (uint64_t)7) << 59;
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ret |= (uint64_t)extract32(arg, 0, 30) << 29;
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}
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} else {
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/* Zero or Denormalized operand. */
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ret = (uint64_t)extract32(arg, 31, 1) << 63;
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if (unlikely(abs_arg != 0)) {
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/*
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* Denormalized operand.
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* Shift fraction so that the msb is in the implicit bit position.
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* Thus, shift is in the range [1:23].
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*/
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int shift = clz32(abs_arg) - 8;
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/*
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* The first 3 terms compute the float64 exponent. We then bias
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* this result by -1 so that we can swallow the implicit bit below.
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*/
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int exp = -126 - shift + 1023 - 1;
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ret |= (uint64_t)exp << 52;
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ret += (uint64_t)abs_arg << (52 - 23 + shift);
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}
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}
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return ret;
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}
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/*
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* This is the non-arithmatic conversion that happens e.g. on stores.
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* In the Power ISA pseudocode, this is called SINGLE.
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*/
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uint32_t helper_tosingle(uint64_t arg)
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{
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int exp = extract64(arg, 52, 11);
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uint32_t ret;
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if (likely(exp > 896)) {
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/* No denormalization required (includes Inf, NaN). */
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ret = extract64(arg, 62, 2) << 30;
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ret |= extract64(arg, 29, 30);
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} else {
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/*
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* Zero or Denormal result. If the exponent is in bounds for
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* a single-precision denormal result, extract the proper
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* bits. If the input is not zero, and the exponent is out of
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* bounds, then the result is undefined; this underflows to
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* zero.
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*/
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ret = extract64(arg, 63, 1) << 31;
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if (unlikely(exp >= 874)) {
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/* Denormal result. */
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ret |= ((1ULL << 52) | extract64(arg, 0, 52)) >> (896 + 30 - exp);
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}
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}
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return ret;
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}
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static inline int ppc_float32_get_unbiased_exp(float32 f)
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{
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return ((f >> 23) & 0xFF) - 127;
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}
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static inline int ppc_float64_get_unbiased_exp(float64 f)
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{
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return ((f >> 52) & 0x7FF) - 1023;
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}
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/* Classify a floating-point number. */
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enum {
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is_normal = 1,
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is_zero = 2,
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is_denormal = 4,
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is_inf = 8,
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is_qnan = 16,
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is_snan = 32,
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is_neg = 64,
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};
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#define COMPUTE_CLASS(tp) \
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static int tp##_classify(tp arg) \
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{ \
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int ret = tp##_is_neg(arg) * is_neg; \
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if (unlikely(tp##_is_any_nan(arg))) { \
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float_status dummy = { }; /* snan_bit_is_one = 0 */ \
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ret |= (tp##_is_signaling_nan(arg, &dummy) \
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? is_snan : is_qnan); \
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} else if (unlikely(tp##_is_infinity(arg))) { \
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ret |= is_inf; \
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} else if (tp##_is_zero(arg)) { \
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ret |= is_zero; \
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} else if (tp##_is_zero_or_denormal(arg)) { \
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ret |= is_denormal; \
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} else { \
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ret |= is_normal; \
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} \
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return ret; \
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}
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COMPUTE_CLASS(float16)
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COMPUTE_CLASS(float32)
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COMPUTE_CLASS(float64)
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COMPUTE_CLASS(float128)
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static void set_fprf_from_class(CPUPPCState *env, int class)
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{
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static const uint8_t fprf[6][2] = {
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{ 0x04, 0x08 }, /* normalized */
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{ 0x02, 0x12 }, /* zero */
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{ 0x14, 0x18 }, /* denormalized */
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{ 0x05, 0x09 }, /* infinity */
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{ 0x11, 0x11 }, /* qnan */
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{ 0x00, 0x00 }, /* snan -- flags are undefined */
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};
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bool isneg = class & is_neg;
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env->fpscr &= ~FP_FPRF;
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env->fpscr |= fprf[ctz32(class)][isneg] << FPSCR_FPRF;
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}
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#define COMPUTE_FPRF(tp) \
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void helper_compute_fprf_##tp(CPUPPCState *env, tp arg) \
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{ \
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set_fprf_from_class(env, tp##_classify(arg)); \
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}
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COMPUTE_FPRF(float16)
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COMPUTE_FPRF(float32)
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COMPUTE_FPRF(float64)
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COMPUTE_FPRF(float128)
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/* Floating-point invalid operations exception */
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static void finish_invalid_op_excp(CPUPPCState *env, int op, uintptr_t retaddr)
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{
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/* Update the floating-point invalid operation summary */
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env->fpscr |= FP_VX;
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/* Update the floating-point exception summary */
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env->fpscr |= FP_FX;
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if (env->fpscr & FP_VE) {
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/* Update the floating-point enabled exception summary */
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env->fpscr |= FP_FEX;
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if (fp_exceptions_enabled(env)) {
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raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM,
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POWERPC_EXCP_FP | op, retaddr);
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}
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}
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}
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static void finish_invalid_op_arith(CPUPPCState *env, int op,
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bool set_fpcc, uintptr_t retaddr)
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{
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env->fpscr &= ~(FP_FR | FP_FI);
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if (!(env->fpscr & FP_VE)) {
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if (set_fpcc) {
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env->fpscr &= ~FP_FPCC;
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env->fpscr |= (FP_C | FP_FU);
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}
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}
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finish_invalid_op_excp(env, op, retaddr);
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}
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/* Signalling NaN */
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static void float_invalid_op_vxsnan(CPUPPCState *env, uintptr_t retaddr)
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{
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env->fpscr |= FP_VXSNAN;
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finish_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, retaddr);
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}
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/* Magnitude subtraction of infinities */
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static void float_invalid_op_vxisi(CPUPPCState *env, bool set_fpcc,
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uintptr_t retaddr)
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{
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env->fpscr |= FP_VXISI;
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finish_invalid_op_arith(env, POWERPC_EXCP_FP_VXISI, set_fpcc, retaddr);
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}
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/* Division of infinity by infinity */
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static void float_invalid_op_vxidi(CPUPPCState *env, bool set_fpcc,
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uintptr_t retaddr)
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{
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env->fpscr |= FP_VXIDI;
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finish_invalid_op_arith(env, POWERPC_EXCP_FP_VXIDI, set_fpcc, retaddr);
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}
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/* Division of zero by zero */
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static void float_invalid_op_vxzdz(CPUPPCState *env, bool set_fpcc,
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uintptr_t retaddr)
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{
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env->fpscr |= FP_VXZDZ;
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finish_invalid_op_arith(env, POWERPC_EXCP_FP_VXZDZ, set_fpcc, retaddr);
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}
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/* Multiplication of zero by infinity */
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static void float_invalid_op_vximz(CPUPPCState *env, bool set_fpcc,
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uintptr_t retaddr)
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{
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env->fpscr |= FP_VXIMZ;
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finish_invalid_op_arith(env, POWERPC_EXCP_FP_VXIMZ, set_fpcc, retaddr);
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}
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/* Square root of a negative number */
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static void float_invalid_op_vxsqrt(CPUPPCState *env, bool set_fpcc,
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uintptr_t retaddr)
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{
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env->fpscr |= FP_VXSQRT;
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finish_invalid_op_arith(env, POWERPC_EXCP_FP_VXSQRT, set_fpcc, retaddr);
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}
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/* Ordered comparison of NaN */
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static void float_invalid_op_vxvc(CPUPPCState *env, bool set_fpcc,
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uintptr_t retaddr)
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{
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env->fpscr |= FP_VXVC;
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if (set_fpcc) {
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env->fpscr &= ~FP_FPCC;
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env->fpscr |= (FP_C | FP_FU);
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}
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/* Update the floating-point invalid operation summary */
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env->fpscr |= FP_VX;
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/* Update the floating-point exception summary */
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env->fpscr |= FP_FX;
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/* We must update the target FPR before raising the exception */
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if (env->fpscr & FP_VE) {
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CPUState *cs = env_cpu(env);
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cs->exception_index = POWERPC_EXCP_PROGRAM;
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env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_VXVC;
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/* Update the floating-point enabled exception summary */
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env->fpscr |= FP_FEX;
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/* Exception is deferred */
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}
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}
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/* Invalid conversion */
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static void float_invalid_op_vxcvi(CPUPPCState *env, bool set_fpcc,
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uintptr_t retaddr)
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{
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env->fpscr |= FP_VXCVI;
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env->fpscr &= ~(FP_FR | FP_FI);
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if (!(env->fpscr & FP_VE)) {
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if (set_fpcc) {
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env->fpscr &= ~FP_FPCC;
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env->fpscr |= (FP_C | FP_FU);
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}
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}
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finish_invalid_op_excp(env, POWERPC_EXCP_FP_VXCVI, retaddr);
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}
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static inline void float_zero_divide_excp(CPUPPCState *env, uintptr_t raddr)
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{
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env->fpscr |= FP_ZX;
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env->fpscr &= ~(FP_FR | FP_FI);
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/* Update the floating-point exception summary */
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env->fpscr |= FP_FX;
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if (env->fpscr & FP_ZE) {
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/* Update the floating-point enabled exception summary */
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env->fpscr |= FP_FEX;
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if (fp_exceptions_enabled(env)) {
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raise_exception_err_ra(env, POWERPC_EXCP_PROGRAM,
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POWERPC_EXCP_FP | POWERPC_EXCP_FP_ZX,
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raddr);
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}
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}
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}
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static inline int float_overflow_excp(CPUPPCState *env)
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{
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CPUState *cs = env_cpu(env);
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env->fpscr |= FP_OX;
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/* Update the floating-point exception summary */
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env->fpscr |= FP_FX;
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bool overflow_enabled = !!(env->fpscr & FP_OE);
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if (overflow_enabled) {
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/* Update the floating-point enabled exception summary */
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env->fpscr |= FP_FEX;
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/* We must update the target FPR before raising the exception */
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cs->exception_index = POWERPC_EXCP_PROGRAM;
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env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_OX;
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}
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return overflow_enabled ? 0 : float_flag_inexact;
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}
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static inline void float_underflow_excp(CPUPPCState *env)
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{
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CPUState *cs = env_cpu(env);
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env->fpscr |= FP_UX;
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/* Update the floating-point exception summary */
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env->fpscr |= FP_FX;
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if (env->fpscr & FP_UE) {
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/* Update the floating-point enabled exception summary */
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env->fpscr |= FP_FEX;
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/* We must update the target FPR before raising the exception */
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cs->exception_index = POWERPC_EXCP_PROGRAM;
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env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_UX;
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}
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}
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static inline void float_inexact_excp(CPUPPCState *env)
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{
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CPUState *cs = env_cpu(env);
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env->fpscr |= FP_XX;
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/* Update the floating-point exception summary */
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env->fpscr |= FP_FX;
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if (env->fpscr & FP_XE) {
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/* Update the floating-point enabled exception summary */
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env->fpscr |= FP_FEX;
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/* We must update the target FPR before raising the exception */
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cs->exception_index = POWERPC_EXCP_PROGRAM;
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env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_XX;
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}
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}
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void helper_fpscr_clrbit(CPUPPCState *env, uint32_t bit)
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{
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uint32_t mask = 1u << bit;
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if (env->fpscr & mask) {
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ppc_store_fpscr(env, env->fpscr & ~(target_ulong)mask);
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}
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}
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void helper_fpscr_setbit(CPUPPCState *env, uint32_t bit)
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{
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uint32_t mask = 1u << bit;
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if (!(env->fpscr & mask)) {
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ppc_store_fpscr(env, env->fpscr | mask);
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}
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}
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void helper_store_fpscr(CPUPPCState *env, uint64_t val, uint32_t nibbles)
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{
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target_ulong mask = 0;
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int i;
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|
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/* TODO: push this extension back to translation time */
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for (i = 0; i < sizeof(target_ulong) * 2; i++) {
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if (nibbles & (1 << i)) {
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mask |= (target_ulong) 0xf << (4 * i);
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}
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}
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val = (val & mask) | (env->fpscr & ~mask);
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ppc_store_fpscr(env, val);
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}
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static void do_fpscr_check_status(CPUPPCState *env, uintptr_t raddr)
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{
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CPUState *cs = env_cpu(env);
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target_ulong fpscr = env->fpscr;
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int error = 0;
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if ((fpscr & FP_OX) && (fpscr & FP_OE)) {
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error = POWERPC_EXCP_FP_OX;
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} else if ((fpscr & FP_UX) && (fpscr & FP_UE)) {
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error = POWERPC_EXCP_FP_UX;
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} else if ((fpscr & FP_XX) && (fpscr & FP_XE)) {
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error = POWERPC_EXCP_FP_XX;
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} else if ((fpscr & FP_ZX) && (fpscr & FP_ZE)) {
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error = POWERPC_EXCP_FP_ZX;
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} else if (fpscr & FP_VE) {
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if (fpscr & FP_VXSOFT) {
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error = POWERPC_EXCP_FP_VXSOFT;
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} else if (fpscr & FP_VXSNAN) {
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error = POWERPC_EXCP_FP_VXSNAN;
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} else if (fpscr & FP_VXISI) {
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error = POWERPC_EXCP_FP_VXISI;
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} else if (fpscr & FP_VXIDI) {
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error = POWERPC_EXCP_FP_VXIDI;
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} else if (fpscr & FP_VXZDZ) {
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error = POWERPC_EXCP_FP_VXZDZ;
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} else if (fpscr & FP_VXIMZ) {
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error = POWERPC_EXCP_FP_VXIMZ;
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} else if (fpscr & FP_VXVC) {
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error = POWERPC_EXCP_FP_VXVC;
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} else if (fpscr & FP_VXSQRT) {
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error = POWERPC_EXCP_FP_VXSQRT;
|
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} else if (fpscr & FP_VXCVI) {
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error = POWERPC_EXCP_FP_VXCVI;
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} else {
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return;
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}
|
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} else {
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return;
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}
|
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cs->exception_index = POWERPC_EXCP_PROGRAM;
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env->error_code = error | POWERPC_EXCP_FP;
|
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env->fpscr |= FP_FEX;
|
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/* Deferred floating-point exception after target FPSCR update */
|
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if (fp_exceptions_enabled(env)) {
|
|
raise_exception_err_ra(env, cs->exception_index,
|
|
env->error_code, raddr);
|
|
}
|
|
}
|
|
|
|
void helper_fpscr_check_status(CPUPPCState *env)
|
|
{
|
|
do_fpscr_check_status(env, GETPC());
|
|
}
|
|
|
|
static void do_float_check_status(CPUPPCState *env, bool change_fi,
|
|
uintptr_t raddr)
|
|
{
|
|
CPUState *cs = env_cpu(env);
|
|
int status = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (status & float_flag_overflow) {
|
|
status |= float_overflow_excp(env);
|
|
} else if (status & float_flag_underflow) {
|
|
float_underflow_excp(env);
|
|
}
|
|
if (status & float_flag_inexact) {
|
|
float_inexact_excp(env);
|
|
}
|
|
if (change_fi) {
|
|
env->fpscr = FIELD_DP64(env->fpscr, FPSCR, FI,
|
|
!!(status & float_flag_inexact));
|
|
}
|
|
|
|
if (cs->exception_index == POWERPC_EXCP_PROGRAM &&
|
|
(env->error_code & POWERPC_EXCP_FP)) {
|
|
/* Deferred floating-point exception after target FPR update */
|
|
if (fp_exceptions_enabled(env)) {
|
|
raise_exception_err_ra(env, cs->exception_index,
|
|
env->error_code, raddr);
|
|
}
|
|
}
|
|
}
|
|
|
|
void helper_float_check_status(CPUPPCState *env)
|
|
{
|
|
do_float_check_status(env, true, GETPC());
|
|
}
|
|
|
|
void helper_reset_fpstatus(CPUPPCState *env)
|
|
{
|
|
set_float_exception_flags(0, &env->fp_status);
|
|
}
|
|
|
|
static void float_invalid_op_addsub(CPUPPCState *env, int flags,
|
|
bool set_fpcc, uintptr_t retaddr)
|
|
{
|
|
if (flags & float_flag_invalid_isi) {
|
|
float_invalid_op_vxisi(env, set_fpcc, retaddr);
|
|
} else if (flags & float_flag_invalid_snan) {
|
|
float_invalid_op_vxsnan(env, retaddr);
|
|
}
|
|
}
|
|
|
|
/* fadd - fadd. */
|
|
float64 helper_fadd(CPUPPCState *env, float64 arg1, float64 arg2)
|
|
{
|
|
float64 ret = float64_add(arg1, arg2, &env->fp_status);
|
|
int flags = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (unlikely(flags & float_flag_invalid)) {
|
|
float_invalid_op_addsub(env, flags, 1, GETPC());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* fadds - fadds. */
|
|
float64 helper_fadds(CPUPPCState *env, float64 arg1, float64 arg2)
|
|
{
|
|
float64 ret = float64r32_add(arg1, arg2, &env->fp_status);
|
|
int flags = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (unlikely(flags & float_flag_invalid)) {
|
|
float_invalid_op_addsub(env, flags, 1, GETPC());
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* fsub - fsub. */
|
|
float64 helper_fsub(CPUPPCState *env, float64 arg1, float64 arg2)
|
|
{
|
|
float64 ret = float64_sub(arg1, arg2, &env->fp_status);
|
|
int flags = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (unlikely(flags & float_flag_invalid)) {
|
|
float_invalid_op_addsub(env, flags, 1, GETPC());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* fsubs - fsubs. */
|
|
float64 helper_fsubs(CPUPPCState *env, float64 arg1, float64 arg2)
|
|
{
|
|
float64 ret = float64r32_sub(arg1, arg2, &env->fp_status);
|
|
int flags = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (unlikely(flags & float_flag_invalid)) {
|
|
float_invalid_op_addsub(env, flags, 1, GETPC());
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void float_invalid_op_mul(CPUPPCState *env, int flags,
|
|
bool set_fprc, uintptr_t retaddr)
|
|
{
|
|
if (flags & float_flag_invalid_imz) {
|
|
float_invalid_op_vximz(env, set_fprc, retaddr);
|
|
} else if (flags & float_flag_invalid_snan) {
|
|
float_invalid_op_vxsnan(env, retaddr);
|
|
}
|
|
}
|
|
|
|
/* fmul - fmul. */
|
|
float64 helper_fmul(CPUPPCState *env, float64 arg1, float64 arg2)
|
|
{
|
|
float64 ret = float64_mul(arg1, arg2, &env->fp_status);
|
|
int flags = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (unlikely(flags & float_flag_invalid)) {
|
|
float_invalid_op_mul(env, flags, 1, GETPC());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* fmuls - fmuls. */
|
|
float64 helper_fmuls(CPUPPCState *env, float64 arg1, float64 arg2)
|
|
{
|
|
float64 ret = float64r32_mul(arg1, arg2, &env->fp_status);
|
|
int flags = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (unlikely(flags & float_flag_invalid)) {
|
|
float_invalid_op_mul(env, flags, 1, GETPC());
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void float_invalid_op_div(CPUPPCState *env, int flags,
|
|
bool set_fprc, uintptr_t retaddr)
|
|
{
|
|
if (flags & float_flag_invalid_idi) {
|
|
float_invalid_op_vxidi(env, set_fprc, retaddr);
|
|
} else if (flags & float_flag_invalid_zdz) {
|
|
float_invalid_op_vxzdz(env, set_fprc, retaddr);
|
|
} else if (flags & float_flag_invalid_snan) {
|
|
float_invalid_op_vxsnan(env, retaddr);
|
|
}
|
|
}
|
|
|
|
/* fdiv - fdiv. */
|
|
float64 helper_fdiv(CPUPPCState *env, float64 arg1, float64 arg2)
|
|
{
|
|
float64 ret = float64_div(arg1, arg2, &env->fp_status);
|
|
int flags = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (unlikely(flags & float_flag_invalid)) {
|
|
float_invalid_op_div(env, flags, 1, GETPC());
|
|
}
|
|
if (unlikely(flags & float_flag_divbyzero)) {
|
|
float_zero_divide_excp(env, GETPC());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* fdivs - fdivs. */
|
|
float64 helper_fdivs(CPUPPCState *env, float64 arg1, float64 arg2)
|
|
{
|
|
float64 ret = float64r32_div(arg1, arg2, &env->fp_status);
|
|
int flags = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (unlikely(flags & float_flag_invalid)) {
|
|
float_invalid_op_div(env, flags, 1, GETPC());
|
|
}
|
|
if (unlikely(flags & float_flag_divbyzero)) {
|
|
float_zero_divide_excp(env, GETPC());
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static uint64_t float_invalid_cvt(CPUPPCState *env, int flags,
|
|
uint64_t ret, uint64_t ret_nan,
|
|
bool set_fprc, uintptr_t retaddr)
|
|
{
|
|
/*
|
|
* VXCVI is different from most in that it sets two exception bits,
|
|
* VXCVI and VXSNAN for an SNaN input.
|
|
*/
|
|
if (flags & float_flag_invalid_snan) {
|
|
env->fpscr |= FP_VXSNAN;
|
|
}
|
|
float_invalid_op_vxcvi(env, set_fprc, retaddr);
|
|
|
|
return flags & float_flag_invalid_cvti ? ret : ret_nan;
|
|
}
|
|
|
|
#define FPU_FCTI(op, cvt, nanval) \
|
|
uint64_t helper_##op(CPUPPCState *env, float64 arg) \
|
|
{ \
|
|
uint64_t ret = float64_to_##cvt(arg, &env->fp_status); \
|
|
int flags = get_float_exception_flags(&env->fp_status); \
|
|
if (unlikely(flags & float_flag_invalid)) { \
|
|
ret = float_invalid_cvt(env, flags, ret, nanval, 1, GETPC()); \
|
|
} \
|
|
return ret; \
|
|
}
|
|
|
|
FPU_FCTI(fctiw, int32, 0x80000000U)
|
|
FPU_FCTI(fctiwz, int32_round_to_zero, 0x80000000U)
|
|
FPU_FCTI(fctiwu, uint32, 0x00000000U)
|
|
FPU_FCTI(fctiwuz, uint32_round_to_zero, 0x00000000U)
|
|
FPU_FCTI(fctid, int64, 0x8000000000000000ULL)
|
|
FPU_FCTI(fctidz, int64_round_to_zero, 0x8000000000000000ULL)
|
|
FPU_FCTI(fctidu, uint64, 0x0000000000000000ULL)
|
|
FPU_FCTI(fctiduz, uint64_round_to_zero, 0x0000000000000000ULL)
|
|
|
|
#define FPU_FCFI(op, cvtr, is_single) \
|
|
uint64_t helper_##op(CPUPPCState *env, uint64_t arg) \
|
|
{ \
|
|
CPU_DoubleU farg; \
|
|
\
|
|
if (is_single) { \
|
|
float32 tmp = cvtr(arg, &env->fp_status); \
|
|
farg.d = float32_to_float64(tmp, &env->fp_status); \
|
|
} else { \
|
|
farg.d = cvtr(arg, &env->fp_status); \
|
|
} \
|
|
do_float_check_status(env, true, GETPC()); \
|
|
return farg.ll; \
|
|
}
|
|
|
|
FPU_FCFI(fcfid, int64_to_float64, 0)
|
|
FPU_FCFI(fcfids, int64_to_float32, 1)
|
|
FPU_FCFI(fcfidu, uint64_to_float64, 0)
|
|
FPU_FCFI(fcfidus, uint64_to_float32, 1)
|
|
|
|
static uint64_t do_fri(CPUPPCState *env, uint64_t arg,
|
|
FloatRoundMode rounding_mode)
|
|
{
|
|
FloatRoundMode old_rounding_mode = get_float_rounding_mode(&env->fp_status);
|
|
int flags;
|
|
|
|
set_float_rounding_mode(rounding_mode, &env->fp_status);
|
|
arg = float64_round_to_int(arg, &env->fp_status);
|
|
set_float_rounding_mode(old_rounding_mode, &env->fp_status);
|
|
|
|
flags = get_float_exception_flags(&env->fp_status);
|
|
if (flags & float_flag_invalid_snan) {
|
|
float_invalid_op_vxsnan(env, GETPC());
|
|
}
|
|
|
|
/* fri* does not set FPSCR[XX] */
|
|
set_float_exception_flags(flags & ~float_flag_inexact, &env->fp_status);
|
|
do_float_check_status(env, true, GETPC());
|
|
|
|
return arg;
|
|
}
|
|
|
|
uint64_t helper_frin(CPUPPCState *env, uint64_t arg)
|
|
{
|
|
return do_fri(env, arg, float_round_ties_away);
|
|
}
|
|
|
|
uint64_t helper_friz(CPUPPCState *env, uint64_t arg)
|
|
{
|
|
return do_fri(env, arg, float_round_to_zero);
|
|
}
|
|
|
|
uint64_t helper_frip(CPUPPCState *env, uint64_t arg)
|
|
{
|
|
return do_fri(env, arg, float_round_up);
|
|
}
|
|
|
|
uint64_t helper_frim(CPUPPCState *env, uint64_t arg)
|
|
{
|
|
return do_fri(env, arg, float_round_down);
|
|
}
|
|
|
|
static void float_invalid_op_madd(CPUPPCState *env, int flags,
|
|
bool set_fpcc, uintptr_t retaddr)
|
|
{
|
|
if (flags & float_flag_invalid_imz) {
|
|
float_invalid_op_vximz(env, set_fpcc, retaddr);
|
|
} else {
|
|
float_invalid_op_addsub(env, flags, set_fpcc, retaddr);
|
|
}
|
|
}
|
|
|
|
static float64 do_fmadd(CPUPPCState *env, float64 a, float64 b,
|
|
float64 c, int madd_flags, uintptr_t retaddr)
|
|
{
|
|
float64 ret = float64_muladd(a, b, c, madd_flags, &env->fp_status);
|
|
int flags = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (unlikely(flags & float_flag_invalid)) {
|
|
float_invalid_op_madd(env, flags, 1, retaddr);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static uint64_t do_fmadds(CPUPPCState *env, float64 a, float64 b,
|
|
float64 c, int madd_flags, uintptr_t retaddr)
|
|
{
|
|
float64 ret = float64r32_muladd(a, b, c, madd_flags, &env->fp_status);
|
|
int flags = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (unlikely(flags & float_flag_invalid)) {
|
|
float_invalid_op_madd(env, flags, 1, retaddr);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
#define FPU_FMADD(op, madd_flags) \
|
|
uint64_t helper_##op(CPUPPCState *env, uint64_t arg1, \
|
|
uint64_t arg2, uint64_t arg3) \
|
|
{ return do_fmadd(env, arg1, arg2, arg3, madd_flags, GETPC()); } \
|
|
uint64_t helper_##op##s(CPUPPCState *env, uint64_t arg1, \
|
|
uint64_t arg2, uint64_t arg3) \
|
|
{ return do_fmadds(env, arg1, arg2, arg3, madd_flags, GETPC()); }
|
|
|
|
#define MADD_FLGS 0
|
|
#define MSUB_FLGS float_muladd_negate_c
|
|
#define NMADD_FLGS float_muladd_negate_result
|
|
#define NMSUB_FLGS (float_muladd_negate_c | float_muladd_negate_result)
|
|
|
|
FPU_FMADD(fmadd, MADD_FLGS)
|
|
FPU_FMADD(fnmadd, NMADD_FLGS)
|
|
FPU_FMADD(fmsub, MSUB_FLGS)
|
|
FPU_FMADD(fnmsub, NMSUB_FLGS)
|
|
|
|
/* frsp - frsp. */
|
|
static uint64_t do_frsp(CPUPPCState *env, uint64_t arg, uintptr_t retaddr)
|
|
{
|
|
float32 f32 = float64_to_float32(arg, &env->fp_status);
|
|
int flags = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (unlikely(flags & float_flag_invalid_snan)) {
|
|
float_invalid_op_vxsnan(env, retaddr);
|
|
}
|
|
return helper_todouble(f32);
|
|
}
|
|
|
|
uint64_t helper_frsp(CPUPPCState *env, uint64_t arg)
|
|
{
|
|
return do_frsp(env, arg, GETPC());
|
|
}
|
|
|
|
static void float_invalid_op_sqrt(CPUPPCState *env, int flags,
|
|
bool set_fpcc, uintptr_t retaddr)
|
|
{
|
|
if (unlikely(flags & float_flag_invalid_sqrt)) {
|
|
float_invalid_op_vxsqrt(env, set_fpcc, retaddr);
|
|
} else if (unlikely(flags & float_flag_invalid_snan)) {
|
|
float_invalid_op_vxsnan(env, retaddr);
|
|
}
|
|
}
|
|
|
|
#define FPU_FSQRT(name, op) \
|
|
float64 helper_##name(CPUPPCState *env, float64 arg) \
|
|
{ \
|
|
float64 ret = op(arg, &env->fp_status); \
|
|
int flags = get_float_exception_flags(&env->fp_status); \
|
|
\
|
|
if (unlikely(flags & float_flag_invalid)) { \
|
|
float_invalid_op_sqrt(env, flags, 1, GETPC()); \
|
|
} \
|
|
\
|
|
return ret; \
|
|
}
|
|
|
|
FPU_FSQRT(FSQRT, float64_sqrt)
|
|
FPU_FSQRT(FSQRTS, float64r32_sqrt)
|
|
|
|
/* fre - fre. */
|
|
float64 helper_fre(CPUPPCState *env, float64 arg)
|
|
{
|
|
/* "Estimate" the reciprocal with actual division. */
|
|
float64 ret = float64_div(float64_one, arg, &env->fp_status);
|
|
int flags = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (unlikely(flags & float_flag_invalid_snan)) {
|
|
float_invalid_op_vxsnan(env, GETPC());
|
|
}
|
|
if (unlikely(flags & float_flag_divbyzero)) {
|
|
float_zero_divide_excp(env, GETPC());
|
|
/* For FPSCR.ZE == 0, the result is 1/2. */
|
|
ret = float64_set_sign(float64_half, float64_is_neg(arg));
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* fres - fres. */
|
|
uint64_t helper_fres(CPUPPCState *env, uint64_t arg)
|
|
{
|
|
/* "Estimate" the reciprocal with actual division. */
|
|
float64 ret = float64r32_div(float64_one, arg, &env->fp_status);
|
|
int flags = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (unlikely(flags & float_flag_invalid_snan)) {
|
|
float_invalid_op_vxsnan(env, GETPC());
|
|
}
|
|
if (unlikely(flags & float_flag_divbyzero)) {
|
|
float_zero_divide_excp(env, GETPC());
|
|
/* For FPSCR.ZE == 0, the result is 1/2. */
|
|
ret = float64_set_sign(float64_half, float64_is_neg(arg));
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* frsqrte - frsqrte. */
|
|
float64 helper_frsqrte(CPUPPCState *env, float64 arg)
|
|
{
|
|
/* "Estimate" the reciprocal with actual division. */
|
|
float64 rets = float64_sqrt(arg, &env->fp_status);
|
|
float64 retd = float64_div(float64_one, rets, &env->fp_status);
|
|
int flags = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (unlikely(flags & float_flag_invalid)) {
|
|
float_invalid_op_sqrt(env, flags, 1, GETPC());
|
|
}
|
|
if (unlikely(flags & float_flag_divbyzero)) {
|
|
/* Reciprocal of (square root of) zero. */
|
|
float_zero_divide_excp(env, GETPC());
|
|
}
|
|
|
|
return retd;
|
|
}
|
|
|
|
/* frsqrtes - frsqrtes. */
|
|
float64 helper_frsqrtes(CPUPPCState *env, float64 arg)
|
|
{
|
|
/* "Estimate" the reciprocal with actual division. */
|
|
float64 rets = float64_sqrt(arg, &env->fp_status);
|
|
float64 retd = float64r32_div(float64_one, rets, &env->fp_status);
|
|
int flags = get_float_exception_flags(&env->fp_status);
|
|
|
|
if (unlikely(flags & float_flag_invalid)) {
|
|
float_invalid_op_sqrt(env, flags, 1, GETPC());
|
|
}
|
|
if (unlikely(flags & float_flag_divbyzero)) {
|
|
/* Reciprocal of (square root of) zero. */
|
|
float_zero_divide_excp(env, GETPC());
|
|
}
|
|
|
|
return retd;
|
|
}
|
|
|
|
/* fsel - fsel. */
|
|
uint64_t helper_FSEL(uint64_t a, uint64_t b, uint64_t c)
|
|
{
|
|
CPU_DoubleU fa;
|
|
|
|
fa.ll = a;
|
|
|
|
if ((!float64_is_neg(fa.d) || float64_is_zero(fa.d)) &&
|
|
!float64_is_any_nan(fa.d)) {
|
|
return c;
|
|
} else {
|
|
return b;
|
|
}
|
|
}
|
|
|
|
uint32_t helper_ftdiv(uint64_t fra, uint64_t frb)
|
|
{
|
|
int fe_flag = 0;
|
|
int fg_flag = 0;
|
|
|
|
if (unlikely(float64_is_infinity(fra) ||
|
|
float64_is_infinity(frb) ||
|
|
float64_is_zero(frb))) {
|
|
fe_flag = 1;
|
|
fg_flag = 1;
|
|
} else {
|
|
int e_a = ppc_float64_get_unbiased_exp(fra);
|
|
int e_b = ppc_float64_get_unbiased_exp(frb);
|
|
|
|
if (unlikely(float64_is_any_nan(fra) ||
|
|
float64_is_any_nan(frb))) {
|
|
fe_flag = 1;
|
|
} else if ((e_b <= -1022) || (e_b >= 1021)) {
|
|
fe_flag = 1;
|
|
} else if (!float64_is_zero(fra) &&
|
|
(((e_a - e_b) >= 1023) ||
|
|
((e_a - e_b) <= -1021) ||
|
|
(e_a <= -970))) {
|
|
fe_flag = 1;
|
|
}
|
|
|
|
if (unlikely(float64_is_zero_or_denormal(frb))) {
|
|
/* XB is not zero because of the above check and */
|
|
/* so must be denormalized. */
|
|
fg_flag = 1;
|
|
}
|
|
}
|
|
|
|
return 0x8 | (fg_flag ? 4 : 0) | (fe_flag ? 2 : 0);
|
|
}
|
|
|
|
uint32_t helper_ftsqrt(uint64_t frb)
|
|
{
|
|
int fe_flag = 0;
|
|
int fg_flag = 0;
|
|
|
|
if (unlikely(float64_is_infinity(frb) || float64_is_zero(frb))) {
|
|
fe_flag = 1;
|
|
fg_flag = 1;
|
|
} else {
|
|
int e_b = ppc_float64_get_unbiased_exp(frb);
|
|
|
|
if (unlikely(float64_is_any_nan(frb))) {
|
|
fe_flag = 1;
|
|
} else if (unlikely(float64_is_zero(frb))) {
|
|
fe_flag = 1;
|
|
} else if (unlikely(float64_is_neg(frb))) {
|
|
fe_flag = 1;
|
|
} else if (!float64_is_zero(frb) && (e_b <= (-1022 + 52))) {
|
|
fe_flag = 1;
|
|
}
|
|
|
|
if (unlikely(float64_is_zero_or_denormal(frb))) {
|
|
/* XB is not zero because of the above check and */
|
|
/* therefore must be denormalized. */
|
|
fg_flag = 1;
|
|
}
|
|
}
|
|
|
|
return 0x8 | (fg_flag ? 4 : 0) | (fe_flag ? 2 : 0);
|
|
}
|
|
|
|
void helper_fcmpu(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
|
|
uint32_t crfD)
|
|
{
|
|
CPU_DoubleU farg1, farg2;
|
|
uint32_t ret = 0;
|
|
|
|
farg1.ll = arg1;
|
|
farg2.ll = arg2;
|
|
|
|
if (unlikely(float64_is_any_nan(farg1.d) ||
|
|
float64_is_any_nan(farg2.d))) {
|
|
ret = 0x01UL;
|
|
} else if (float64_lt(farg1.d, farg2.d, &env->fp_status)) {
|
|
ret = 0x08UL;
|
|
} else if (!float64_le(farg1.d, farg2.d, &env->fp_status)) {
|
|
ret = 0x04UL;
|
|
} else {
|
|
ret = 0x02UL;
|
|
}
|
|
|
|
env->fpscr &= ~FP_FPCC;
|
|
env->fpscr |= ret << FPSCR_FPCC;
|
|
env->crf[crfD] = ret;
|
|
if (unlikely(ret == 0x01UL
|
|
&& (float64_is_signaling_nan(farg1.d, &env->fp_status) ||
|
|
float64_is_signaling_nan(farg2.d, &env->fp_status)))) {
|
|
/* sNaN comparison */
|
|
float_invalid_op_vxsnan(env, GETPC());
|
|
}
|
|
}
|
|
|
|
void helper_fcmpo(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
|
|
uint32_t crfD)
|
|
{
|
|
CPU_DoubleU farg1, farg2;
|
|
uint32_t ret = 0;
|
|
|
|
farg1.ll = arg1;
|
|
farg2.ll = arg2;
|
|
|
|
if (unlikely(float64_is_any_nan(farg1.d) ||
|
|
float64_is_any_nan(farg2.d))) {
|
|
ret = 0x01UL;
|
|
} else if (float64_lt(farg1.d, farg2.d, &env->fp_status)) {
|
|
ret = 0x08UL;
|
|
} else if (!float64_le(farg1.d, farg2.d, &env->fp_status)) {
|
|
ret = 0x04UL;
|
|
} else {
|
|
ret = 0x02UL;
|
|
}
|
|
|
|
env->fpscr &= ~FP_FPCC;
|
|
env->fpscr |= ret << FPSCR_FPCC;
|
|
env->crf[crfD] = (uint32_t) ret;
|
|
if (unlikely(ret == 0x01UL)) {
|
|
float_invalid_op_vxvc(env, 1, GETPC());
|
|
if (float64_is_signaling_nan(farg1.d, &env->fp_status) ||
|
|
float64_is_signaling_nan(farg2.d, &env->fp_status)) {
|
|
/* sNaN comparison */
|
|
float_invalid_op_vxsnan(env, GETPC());
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Single-precision floating-point conversions */
|
|
static inline uint32_t efscfsi(CPUPPCState *env, uint32_t val)
|
|
{
|
|
CPU_FloatU u;
|
|
|
|
u.f = int32_to_float32(val, &env->vec_status);
|
|
|
|
return u.l;
|
|
}
|
|
|
|
static inline uint32_t efscfui(CPUPPCState *env, uint32_t val)
|
|
{
|
|
CPU_FloatU u;
|
|
|
|
u.f = uint32_to_float32(val, &env->vec_status);
|
|
|
|
return u.l;
|
|
}
|
|
|
|
static inline int32_t efsctsi(CPUPPCState *env, uint32_t val)
|
|
{
|
|
CPU_FloatU u;
|
|
|
|
u.l = val;
|
|
/* NaN are not treated the same way IEEE 754 does */
|
|
if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
|
|
return 0;
|
|
}
|
|
|
|
return float32_to_int32(u.f, &env->vec_status);
|
|
}
|
|
|
|
static inline uint32_t efsctui(CPUPPCState *env, uint32_t val)
|
|
{
|
|
CPU_FloatU u;
|
|
|
|
u.l = val;
|
|
/* NaN are not treated the same way IEEE 754 does */
|
|
if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
|
|
return 0;
|
|
}
|
|
|
|
return float32_to_uint32(u.f, &env->vec_status);
|
|
}
|
|
|
|
static inline uint32_t efsctsiz(CPUPPCState *env, uint32_t val)
|
|
{
|
|
CPU_FloatU u;
|
|
|
|
u.l = val;
|
|
/* NaN are not treated the same way IEEE 754 does */
|
|
if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
|
|
return 0;
|
|
}
|
|
|
|
return float32_to_int32_round_to_zero(u.f, &env->vec_status);
|
|
}
|
|
|
|
static inline uint32_t efsctuiz(CPUPPCState *env, uint32_t val)
|
|
{
|
|
CPU_FloatU u;
|
|
|
|
u.l = val;
|
|
/* NaN are not treated the same way IEEE 754 does */
|
|
if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
|
|
return 0;
|
|
}
|
|
|
|
return float32_to_uint32_round_to_zero(u.f, &env->vec_status);
|
|
}
|
|
|
|
static inline uint32_t efscfsf(CPUPPCState *env, uint32_t val)
|
|
{
|
|
CPU_FloatU u;
|
|
float32 tmp;
|
|
|
|
u.f = int32_to_float32(val, &env->vec_status);
|
|
tmp = int64_to_float32(1ULL << 32, &env->vec_status);
|
|
u.f = float32_div(u.f, tmp, &env->vec_status);
|
|
|
|
return u.l;
|
|
}
|
|
|
|
static inline uint32_t efscfuf(CPUPPCState *env, uint32_t val)
|
|
{
|
|
CPU_FloatU u;
|
|
float32 tmp;
|
|
|
|
u.f = uint32_to_float32(val, &env->vec_status);
|
|
tmp = uint64_to_float32(1ULL << 32, &env->vec_status);
|
|
u.f = float32_div(u.f, tmp, &env->vec_status);
|
|
|
|
return u.l;
|
|
}
|
|
|
|
static inline uint32_t efsctsf(CPUPPCState *env, uint32_t val)
|
|
{
|
|
CPU_FloatU u;
|
|
float32 tmp;
|
|
|
|
u.l = val;
|
|
/* NaN are not treated the same way IEEE 754 does */
|
|
if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
|
|
return 0;
|
|
}
|
|
tmp = uint64_to_float32(1ULL << 32, &env->vec_status);
|
|
u.f = float32_mul(u.f, tmp, &env->vec_status);
|
|
|
|
return float32_to_int32(u.f, &env->vec_status);
|
|
}
|
|
|
|
static inline uint32_t efsctuf(CPUPPCState *env, uint32_t val)
|
|
{
|
|
CPU_FloatU u;
|
|
float32 tmp;
|
|
|
|
u.l = val;
|
|
/* NaN are not treated the same way IEEE 754 does */
|
|
if (unlikely(float32_is_quiet_nan(u.f, &env->vec_status))) {
|
|
return 0;
|
|
}
|
|
tmp = uint64_to_float32(1ULL << 32, &env->vec_status);
|
|
u.f = float32_mul(u.f, tmp, &env->vec_status);
|
|
|
|
return float32_to_uint32(u.f, &env->vec_status);
|
|
}
|
|
|
|
#define HELPER_SPE_SINGLE_CONV(name) \
|
|
uint32_t helper_e##name(CPUPPCState *env, uint32_t val) \
|
|
{ \
|
|
return e##name(env, val); \
|
|
}
|
|
/* efscfsi */
|
|
HELPER_SPE_SINGLE_CONV(fscfsi);
|
|
/* efscfui */
|
|
HELPER_SPE_SINGLE_CONV(fscfui);
|
|
/* efscfuf */
|
|
HELPER_SPE_SINGLE_CONV(fscfuf);
|
|
/* efscfsf */
|
|
HELPER_SPE_SINGLE_CONV(fscfsf);
|
|
/* efsctsi */
|
|
HELPER_SPE_SINGLE_CONV(fsctsi);
|
|
/* efsctui */
|
|
HELPER_SPE_SINGLE_CONV(fsctui);
|
|
/* efsctsiz */
|
|
HELPER_SPE_SINGLE_CONV(fsctsiz);
|
|
/* efsctuiz */
|
|
HELPER_SPE_SINGLE_CONV(fsctuiz);
|
|
/* efsctsf */
|
|
HELPER_SPE_SINGLE_CONV(fsctsf);
|
|
/* efsctuf */
|
|
HELPER_SPE_SINGLE_CONV(fsctuf);
|
|
|
|
#define HELPER_SPE_VECTOR_CONV(name) \
|
|
uint64_t helper_ev##name(CPUPPCState *env, uint64_t val) \
|
|
{ \
|
|
return ((uint64_t)e##name(env, val >> 32) << 32) | \
|
|
(uint64_t)e##name(env, val); \
|
|
}
|
|
/* evfscfsi */
|
|
HELPER_SPE_VECTOR_CONV(fscfsi);
|
|
/* evfscfui */
|
|
HELPER_SPE_VECTOR_CONV(fscfui);
|
|
/* evfscfuf */
|
|
HELPER_SPE_VECTOR_CONV(fscfuf);
|
|
/* evfscfsf */
|
|
HELPER_SPE_VECTOR_CONV(fscfsf);
|
|
/* evfsctsi */
|
|
HELPER_SPE_VECTOR_CONV(fsctsi);
|
|
/* evfsctui */
|
|
HELPER_SPE_VECTOR_CONV(fsctui);
|
|
/* evfsctsiz */
|
|
HELPER_SPE_VECTOR_CONV(fsctsiz);
|
|
/* evfsctuiz */
|
|
HELPER_SPE_VECTOR_CONV(fsctuiz);
|
|
/* evfsctsf */
|
|
HELPER_SPE_VECTOR_CONV(fsctsf);
|
|
/* evfsctuf */
|
|
HELPER_SPE_VECTOR_CONV(fsctuf);
|
|
|
|
/* Single-precision floating-point arithmetic */
|
|
static inline uint32_t efsadd(CPUPPCState *env, uint32_t op1, uint32_t op2)
|
|
{
|
|
CPU_FloatU u1, u2;
|
|
|
|
u1.l = op1;
|
|
u2.l = op2;
|
|
u1.f = float32_add(u1.f, u2.f, &env->vec_status);
|
|
return u1.l;
|
|
}
|
|
|
|
static inline uint32_t efssub(CPUPPCState *env, uint32_t op1, uint32_t op2)
|
|
{
|
|
CPU_FloatU u1, u2;
|
|
|
|
u1.l = op1;
|
|
u2.l = op2;
|
|
u1.f = float32_sub(u1.f, u2.f, &env->vec_status);
|
|
return u1.l;
|
|
}
|
|
|
|
static inline uint32_t efsmul(CPUPPCState *env, uint32_t op1, uint32_t op2)
|
|
{
|
|
CPU_FloatU u1, u2;
|
|
|
|
u1.l = op1;
|
|
u2.l = op2;
|
|
u1.f = float32_mul(u1.f, u2.f, &env->vec_status);
|
|
return u1.l;
|
|
}
|
|
|
|
static inline uint32_t efsdiv(CPUPPCState *env, uint32_t op1, uint32_t op2)
|
|
{
|
|
CPU_FloatU u1, u2;
|
|
|
|
u1.l = op1;
|
|
u2.l = op2;
|
|
u1.f = float32_div(u1.f, u2.f, &env->vec_status);
|
|
return u1.l;
|
|
}
|
|
|
|
#define HELPER_SPE_SINGLE_ARITH(name) \
|
|
uint32_t helper_e##name(CPUPPCState *env, uint32_t op1, uint32_t op2) \
|
|
{ \
|
|
return e##name(env, op1, op2); \
|
|
}
|
|
/* efsadd */
|
|
HELPER_SPE_SINGLE_ARITH(fsadd);
|
|
/* efssub */
|
|
HELPER_SPE_SINGLE_ARITH(fssub);
|
|
/* efsmul */
|
|
HELPER_SPE_SINGLE_ARITH(fsmul);
|
|
/* efsdiv */
|
|
HELPER_SPE_SINGLE_ARITH(fsdiv);
|
|
|
|
#define HELPER_SPE_VECTOR_ARITH(name) \
|
|
uint64_t helper_ev##name(CPUPPCState *env, uint64_t op1, uint64_t op2) \
|
|
{ \
|
|
return ((uint64_t)e##name(env, op1 >> 32, op2 >> 32) << 32) | \
|
|
(uint64_t)e##name(env, op1, op2); \
|
|
}
|
|
/* evfsadd */
|
|
HELPER_SPE_VECTOR_ARITH(fsadd);
|
|
/* evfssub */
|
|
HELPER_SPE_VECTOR_ARITH(fssub);
|
|
/* evfsmul */
|
|
HELPER_SPE_VECTOR_ARITH(fsmul);
|
|
/* evfsdiv */
|
|
HELPER_SPE_VECTOR_ARITH(fsdiv);
|
|
|
|
/* Single-precision floating-point comparisons */
|
|
static inline uint32_t efscmplt(CPUPPCState *env, uint32_t op1, uint32_t op2)
|
|
{
|
|
CPU_FloatU u1, u2;
|
|
|
|
u1.l = op1;
|
|
u2.l = op2;
|
|
return float32_lt(u1.f, u2.f, &env->vec_status) ? 4 : 0;
|
|
}
|
|
|
|
static inline uint32_t efscmpgt(CPUPPCState *env, uint32_t op1, uint32_t op2)
|
|
{
|
|
CPU_FloatU u1, u2;
|
|
|
|
u1.l = op1;
|
|
u2.l = op2;
|
|
return float32_le(u1.f, u2.f, &env->vec_status) ? 0 : 4;
|
|
}
|
|
|
|
static inline uint32_t efscmpeq(CPUPPCState *env, uint32_t op1, uint32_t op2)
|
|
{
|
|
CPU_FloatU u1, u2;
|
|
|
|
u1.l = op1;
|
|
u2.l = op2;
|
|
return float32_eq(u1.f, u2.f, &env->vec_status) ? 4 : 0;
|
|
}
|
|
|
|
static inline uint32_t efststlt(CPUPPCState *env, uint32_t op1, uint32_t op2)
|
|
{
|
|
/* XXX: TODO: ignore special values (NaN, infinites, ...) */
|
|
return efscmplt(env, op1, op2);
|
|
}
|
|
|
|
static inline uint32_t efststgt(CPUPPCState *env, uint32_t op1, uint32_t op2)
|
|
{
|
|
/* XXX: TODO: ignore special values (NaN, infinites, ...) */
|
|
return efscmpgt(env, op1, op2);
|
|
}
|
|
|
|
static inline uint32_t efststeq(CPUPPCState *env, uint32_t op1, uint32_t op2)
|
|
{
|
|
/* XXX: TODO: ignore special values (NaN, infinites, ...) */
|
|
return efscmpeq(env, op1, op2);
|
|
}
|
|
|
|
#define HELPER_SINGLE_SPE_CMP(name) \
|
|
uint32_t helper_e##name(CPUPPCState *env, uint32_t op1, uint32_t op2) \
|
|
{ \
|
|
return e##name(env, op1, op2); \
|
|
}
|
|
/* efststlt */
|
|
HELPER_SINGLE_SPE_CMP(fststlt);
|
|
/* efststgt */
|
|
HELPER_SINGLE_SPE_CMP(fststgt);
|
|
/* efststeq */
|
|
HELPER_SINGLE_SPE_CMP(fststeq);
|
|
/* efscmplt */
|
|
HELPER_SINGLE_SPE_CMP(fscmplt);
|
|
/* efscmpgt */
|
|
HELPER_SINGLE_SPE_CMP(fscmpgt);
|
|
/* efscmpeq */
|
|
HELPER_SINGLE_SPE_CMP(fscmpeq);
|
|
|
|
static inline uint32_t evcmp_merge(int t0, int t1)
|
|
{
|
|
return (t0 << 3) | (t1 << 2) | ((t0 | t1) << 1) | (t0 & t1);
|
|
}
|
|
|
|
#define HELPER_VECTOR_SPE_CMP(name) \
|
|
uint32_t helper_ev##name(CPUPPCState *env, uint64_t op1, uint64_t op2) \
|
|
{ \
|
|
return evcmp_merge(e##name(env, op1 >> 32, op2 >> 32), \
|
|
e##name(env, op1, op2)); \
|
|
}
|
|
/* evfststlt */
|
|
HELPER_VECTOR_SPE_CMP(fststlt);
|
|
/* evfststgt */
|
|
HELPER_VECTOR_SPE_CMP(fststgt);
|
|
/* evfststeq */
|
|
HELPER_VECTOR_SPE_CMP(fststeq);
|
|
/* evfscmplt */
|
|
HELPER_VECTOR_SPE_CMP(fscmplt);
|
|
/* evfscmpgt */
|
|
HELPER_VECTOR_SPE_CMP(fscmpgt);
|
|
/* evfscmpeq */
|
|
HELPER_VECTOR_SPE_CMP(fscmpeq);
|
|
|
|
/* Double-precision floating-point conversion */
|
|
uint64_t helper_efdcfsi(CPUPPCState *env, uint32_t val)
|
|
{
|
|
CPU_DoubleU u;
|
|
|
|
u.d = int32_to_float64(val, &env->vec_status);
|
|
|
|
return u.ll;
|
|
}
|
|
|
|
uint64_t helper_efdcfsid(CPUPPCState *env, uint64_t val)
|
|
{
|
|
CPU_DoubleU u;
|
|
|
|
u.d = int64_to_float64(val, &env->vec_status);
|
|
|
|
return u.ll;
|
|
}
|
|
|
|
uint64_t helper_efdcfui(CPUPPCState *env, uint32_t val)
|
|
{
|
|
CPU_DoubleU u;
|
|
|
|
u.d = uint32_to_float64(val, &env->vec_status);
|
|
|
|
return u.ll;
|
|
}
|
|
|
|
uint64_t helper_efdcfuid(CPUPPCState *env, uint64_t val)
|
|
{
|
|
CPU_DoubleU u;
|
|
|
|
u.d = uint64_to_float64(val, &env->vec_status);
|
|
|
|
return u.ll;
|
|
}
|
|
|
|
uint32_t helper_efdctsi(CPUPPCState *env, uint64_t val)
|
|
{
|
|
CPU_DoubleU u;
|
|
|
|
u.ll = val;
|
|
/* NaN are not treated the same way IEEE 754 does */
|
|
if (unlikely(float64_is_any_nan(u.d))) {
|
|
return 0;
|
|
}
|
|
|
|
return float64_to_int32(u.d, &env->vec_status);
|
|
}
|
|
|
|
uint32_t helper_efdctui(CPUPPCState *env, uint64_t val)
|
|
{
|
|
CPU_DoubleU u;
|
|
|
|
u.ll = val;
|
|
/* NaN are not treated the same way IEEE 754 does */
|
|
if (unlikely(float64_is_any_nan(u.d))) {
|
|
return 0;
|
|
}
|
|
|
|
return float64_to_uint32(u.d, &env->vec_status);
|
|
}
|
|
|
|
uint32_t helper_efdctsiz(CPUPPCState *env, uint64_t val)
|
|
{
|
|
CPU_DoubleU u;
|
|
|
|
u.ll = val;
|
|
/* NaN are not treated the same way IEEE 754 does */
|
|
if (unlikely(float64_is_any_nan(u.d))) {
|
|
return 0;
|
|
}
|
|
|
|
return float64_to_int32_round_to_zero(u.d, &env->vec_status);
|
|
}
|
|
|
|
uint64_t helper_efdctsidz(CPUPPCState *env, uint64_t val)
|
|
{
|
|
CPU_DoubleU u;
|
|
|
|
u.ll = val;
|
|
/* NaN are not treated the same way IEEE 754 does */
|
|
if (unlikely(float64_is_any_nan(u.d))) {
|
|
return 0;
|
|
}
|
|
|
|
return float64_to_int64_round_to_zero(u.d, &env->vec_status);
|
|
}
|
|
|
|
uint32_t helper_efdctuiz(CPUPPCState *env, uint64_t val)
|
|
{
|
|
CPU_DoubleU u;
|
|
|
|
u.ll = val;
|
|
/* NaN are not treated the same way IEEE 754 does */
|
|
if (unlikely(float64_is_any_nan(u.d))) {
|
|
return 0;
|
|
}
|
|
|
|
return float64_to_uint32_round_to_zero(u.d, &env->vec_status);
|
|
}
|
|
|
|
uint64_t helper_efdctuidz(CPUPPCState *env, uint64_t val)
|
|
{
|
|
CPU_DoubleU u;
|
|
|
|
u.ll = val;
|
|
/* NaN are not treated the same way IEEE 754 does */
|
|
if (unlikely(float64_is_any_nan(u.d))) {
|
|
return 0;
|
|
}
|
|
|
|
return float64_to_uint64_round_to_zero(u.d, &env->vec_status);
|
|
}
|
|
|
|
uint64_t helper_efdcfsf(CPUPPCState *env, uint32_t val)
|
|
{
|
|
CPU_DoubleU u;
|
|
float64 tmp;
|
|
|
|
u.d = int32_to_float64(val, &env->vec_status);
|
|
tmp = int64_to_float64(1ULL << 32, &env->vec_status);
|
|
u.d = float64_div(u.d, tmp, &env->vec_status);
|
|
|
|
return u.ll;
|
|
}
|
|
|
|
uint64_t helper_efdcfuf(CPUPPCState *env, uint32_t val)
|
|
{
|
|
CPU_DoubleU u;
|
|
float64 tmp;
|
|
|
|
u.d = uint32_to_float64(val, &env->vec_status);
|
|
tmp = int64_to_float64(1ULL << 32, &env->vec_status);
|
|
u.d = float64_div(u.d, tmp, &env->vec_status);
|
|
|
|
return u.ll;
|
|
}
|
|
|
|
uint32_t helper_efdctsf(CPUPPCState *env, uint64_t val)
|
|
{
|
|
CPU_DoubleU u;
|
|
float64 tmp;
|
|
|
|
u.ll = val;
|
|
/* NaN are not treated the same way IEEE 754 does */
|
|
if (unlikely(float64_is_any_nan(u.d))) {
|
|
return 0;
|
|
}
|
|
tmp = uint64_to_float64(1ULL << 32, &env->vec_status);
|
|
u.d = float64_mul(u.d, tmp, &env->vec_status);
|
|
|
|
return float64_to_int32(u.d, &env->vec_status);
|
|
}
|
|
|
|
uint32_t helper_efdctuf(CPUPPCState *env, uint64_t val)
|
|
{
|
|
CPU_DoubleU u;
|
|
float64 tmp;
|
|
|
|
u.ll = val;
|
|
/* NaN are not treated the same way IEEE 754 does */
|
|
if (unlikely(float64_is_any_nan(u.d))) {
|
|
return 0;
|
|
}
|
|
tmp = uint64_to_float64(1ULL << 32, &env->vec_status);
|
|
u.d = float64_mul(u.d, tmp, &env->vec_status);
|
|
|
|
return float64_to_uint32(u.d, &env->vec_status);
|
|
}
|
|
|
|
uint32_t helper_efscfd(CPUPPCState *env, uint64_t val)
|
|
{
|
|
CPU_DoubleU u1;
|
|
CPU_FloatU u2;
|
|
|
|
u1.ll = val;
|
|
u2.f = float64_to_float32(u1.d, &env->vec_status);
|
|
|
|
return u2.l;
|
|
}
|
|
|
|
uint64_t helper_efdcfs(CPUPPCState *env, uint32_t val)
|
|
{
|
|
CPU_DoubleU u2;
|
|
CPU_FloatU u1;
|
|
|
|
u1.l = val;
|
|
u2.d = float32_to_float64(u1.f, &env->vec_status);
|
|
|
|
return u2.ll;
|
|
}
|
|
|
|
/* Double precision fixed-point arithmetic */
|
|
uint64_t helper_efdadd(CPUPPCState *env, uint64_t op1, uint64_t op2)
|
|
{
|
|
CPU_DoubleU u1, u2;
|
|
|
|
u1.ll = op1;
|
|
u2.ll = op2;
|
|
u1.d = float64_add(u1.d, u2.d, &env->vec_status);
|
|
return u1.ll;
|
|
}
|
|
|
|
uint64_t helper_efdsub(CPUPPCState *env, uint64_t op1, uint64_t op2)
|
|
{
|
|
CPU_DoubleU u1, u2;
|
|
|
|
u1.ll = op1;
|
|
u2.ll = op2;
|
|
u1.d = float64_sub(u1.d, u2.d, &env->vec_status);
|
|
return u1.ll;
|
|
}
|
|
|
|
uint64_t helper_efdmul(CPUPPCState *env, uint64_t op1, uint64_t op2)
|
|
{
|
|
CPU_DoubleU u1, u2;
|
|
|
|
u1.ll = op1;
|
|
u2.ll = op2;
|
|
u1.d = float64_mul(u1.d, u2.d, &env->vec_status);
|
|
return u1.ll;
|
|
}
|
|
|
|
uint64_t helper_efddiv(CPUPPCState *env, uint64_t op1, uint64_t op2)
|
|
{
|
|
CPU_DoubleU u1, u2;
|
|
|
|
u1.ll = op1;
|
|
u2.ll = op2;
|
|
u1.d = float64_div(u1.d, u2.d, &env->vec_status);
|
|
return u1.ll;
|
|
}
|
|
|
|
/* Double precision floating point helpers */
|
|
uint32_t helper_efdtstlt(CPUPPCState *env, uint64_t op1, uint64_t op2)
|
|
{
|
|
CPU_DoubleU u1, u2;
|
|
|
|
u1.ll = op1;
|
|
u2.ll = op2;
|
|
return float64_lt(u1.d, u2.d, &env->vec_status) ? 4 : 0;
|
|
}
|
|
|
|
uint32_t helper_efdtstgt(CPUPPCState *env, uint64_t op1, uint64_t op2)
|
|
{
|
|
CPU_DoubleU u1, u2;
|
|
|
|
u1.ll = op1;
|
|
u2.ll = op2;
|
|
return float64_le(u1.d, u2.d, &env->vec_status) ? 0 : 4;
|
|
}
|
|
|
|
uint32_t helper_efdtsteq(CPUPPCState *env, uint64_t op1, uint64_t op2)
|
|
{
|
|
CPU_DoubleU u1, u2;
|
|
|
|
u1.ll = op1;
|
|
u2.ll = op2;
|
|
return float64_eq_quiet(u1.d, u2.d, &env->vec_status) ? 4 : 0;
|
|
}
|
|
|
|
uint32_t helper_efdcmplt(CPUPPCState *env, uint64_t op1, uint64_t op2)
|
|
{
|
|
/* XXX: TODO: test special values (NaN, infinites, ...) */
|
|
return helper_efdtstlt(env, op1, op2);
|
|
}
|
|
|
|
uint32_t helper_efdcmpgt(CPUPPCState *env, uint64_t op1, uint64_t op2)
|
|
{
|
|
/* XXX: TODO: test special values (NaN, infinites, ...) */
|
|
return helper_efdtstgt(env, op1, op2);
|
|
}
|
|
|
|
uint32_t helper_efdcmpeq(CPUPPCState *env, uint64_t op1, uint64_t op2)
|
|
{
|
|
/* XXX: TODO: test special values (NaN, infinites, ...) */
|
|
return helper_efdtsteq(env, op1, op2);
|
|
}
|
|
|
|
#define float64_to_float64(x, env) x
|
|
|
|
|
|
/*
|
|
* VSX_ADD_SUB - VSX floating point add/subtract
|
|
* name - instruction mnemonic
|
|
* op - operation (add or sub)
|
|
* nels - number of elements (1, 2 or 4)
|
|
* tp - type (float32 or float64)
|
|
* fld - vsr_t field (VsrD(*) or VsrW(*))
|
|
* sfifprf - set FI and FPRF
|
|
*/
|
|
#define VSX_ADD_SUB(name, op, nels, tp, fld, sfifprf, r2sp) \
|
|
void helper_##name(CPUPPCState *env, ppc_vsr_t *xt, \
|
|
ppc_vsr_t *xa, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
float_status tstat = env->fp_status; \
|
|
set_float_exception_flags(0, &tstat); \
|
|
t.fld = tp##_##op(xa->fld, xb->fld, &tstat); \
|
|
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
|
|
\
|
|
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
|
|
float_invalid_op_addsub(env, tstat.float_exception_flags, \
|
|
sfifprf, GETPC()); \
|
|
} \
|
|
\
|
|
if (r2sp) { \
|
|
t.fld = do_frsp(env, t.fld, GETPC()); \
|
|
} \
|
|
\
|
|
if (sfifprf) { \
|
|
helper_compute_fprf_float64(env, t.fld); \
|
|
} \
|
|
} \
|
|
*xt = t; \
|
|
do_float_check_status(env, sfifprf, GETPC()); \
|
|
}
|
|
|
|
VSX_ADD_SUB(xsadddp, add, 1, float64, VsrD(0), 1, 0)
|
|
VSX_ADD_SUB(xsaddsp, add, 1, float64, VsrD(0), 1, 1)
|
|
VSX_ADD_SUB(xvadddp, add, 2, float64, VsrD(i), 0, 0)
|
|
VSX_ADD_SUB(xvaddsp, add, 4, float32, VsrW(i), 0, 0)
|
|
VSX_ADD_SUB(xssubdp, sub, 1, float64, VsrD(0), 1, 0)
|
|
VSX_ADD_SUB(xssubsp, sub, 1, float64, VsrD(0), 1, 1)
|
|
VSX_ADD_SUB(xvsubdp, sub, 2, float64, VsrD(i), 0, 0)
|
|
VSX_ADD_SUB(xvsubsp, sub, 4, float32, VsrW(i), 0, 0)
|
|
|
|
void helper_xsaddqp(CPUPPCState *env, uint32_t opcode,
|
|
ppc_vsr_t *xt, ppc_vsr_t *xa, ppc_vsr_t *xb)
|
|
{
|
|
ppc_vsr_t t = *xt;
|
|
float_status tstat;
|
|
|
|
helper_reset_fpstatus(env);
|
|
|
|
tstat = env->fp_status;
|
|
if (unlikely(Rc(opcode) != 0)) {
|
|
tstat.float_rounding_mode = float_round_to_odd;
|
|
}
|
|
|
|
set_float_exception_flags(0, &tstat);
|
|
t.f128 = float128_add(xa->f128, xb->f128, &tstat);
|
|
env->fp_status.float_exception_flags |= tstat.float_exception_flags;
|
|
|
|
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) {
|
|
float_invalid_op_addsub(env, tstat.float_exception_flags, 1, GETPC());
|
|
}
|
|
|
|
helper_compute_fprf_float128(env, t.f128);
|
|
|
|
*xt = t;
|
|
do_float_check_status(env, true, GETPC());
|
|
}
|
|
|
|
/*
|
|
* VSX_MUL - VSX floating point multiply
|
|
* op - instruction mnemonic
|
|
* nels - number of elements (1, 2 or 4)
|
|
* tp - type (float32 or float64)
|
|
* fld - vsr_t field (VsrD(*) or VsrW(*))
|
|
* sfifprf - set FI and FPRF
|
|
*/
|
|
#define VSX_MUL(op, nels, tp, fld, sfifprf, r2sp) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, \
|
|
ppc_vsr_t *xa, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
float_status tstat = env->fp_status; \
|
|
set_float_exception_flags(0, &tstat); \
|
|
t.fld = tp##_mul(xa->fld, xb->fld, &tstat); \
|
|
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
|
|
\
|
|
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
|
|
float_invalid_op_mul(env, tstat.float_exception_flags, \
|
|
sfifprf, GETPC()); \
|
|
} \
|
|
\
|
|
if (r2sp) { \
|
|
t.fld = do_frsp(env, t.fld, GETPC()); \
|
|
} \
|
|
\
|
|
if (sfifprf) { \
|
|
helper_compute_fprf_float64(env, t.fld); \
|
|
} \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, sfifprf, GETPC()); \
|
|
}
|
|
|
|
VSX_MUL(xsmuldp, 1, float64, VsrD(0), 1, 0)
|
|
VSX_MUL(xsmulsp, 1, float64, VsrD(0), 1, 1)
|
|
VSX_MUL(xvmuldp, 2, float64, VsrD(i), 0, 0)
|
|
VSX_MUL(xvmulsp, 4, float32, VsrW(i), 0, 0)
|
|
|
|
void helper_xsmulqp(CPUPPCState *env, uint32_t opcode,
|
|
ppc_vsr_t *xt, ppc_vsr_t *xa, ppc_vsr_t *xb)
|
|
{
|
|
ppc_vsr_t t = *xt;
|
|
float_status tstat;
|
|
|
|
helper_reset_fpstatus(env);
|
|
tstat = env->fp_status;
|
|
if (unlikely(Rc(opcode) != 0)) {
|
|
tstat.float_rounding_mode = float_round_to_odd;
|
|
}
|
|
|
|
set_float_exception_flags(0, &tstat);
|
|
t.f128 = float128_mul(xa->f128, xb->f128, &tstat);
|
|
env->fp_status.float_exception_flags |= tstat.float_exception_flags;
|
|
|
|
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) {
|
|
float_invalid_op_mul(env, tstat.float_exception_flags, 1, GETPC());
|
|
}
|
|
helper_compute_fprf_float128(env, t.f128);
|
|
|
|
*xt = t;
|
|
do_float_check_status(env, true, GETPC());
|
|
}
|
|
|
|
/*
|
|
* VSX_DIV - VSX floating point divide
|
|
* op - instruction mnemonic
|
|
* nels - number of elements (1, 2 or 4)
|
|
* tp - type (float32 or float64)
|
|
* fld - vsr_t field (VsrD(*) or VsrW(*))
|
|
* sfifprf - set FI and FPRF
|
|
*/
|
|
#define VSX_DIV(op, nels, tp, fld, sfifprf, r2sp) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, \
|
|
ppc_vsr_t *xa, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
float_status tstat = env->fp_status; \
|
|
set_float_exception_flags(0, &tstat); \
|
|
t.fld = tp##_div(xa->fld, xb->fld, &tstat); \
|
|
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
|
|
\
|
|
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
|
|
float_invalid_op_div(env, tstat.float_exception_flags, \
|
|
sfifprf, GETPC()); \
|
|
} \
|
|
if (unlikely(tstat.float_exception_flags & float_flag_divbyzero)) { \
|
|
float_zero_divide_excp(env, GETPC()); \
|
|
} \
|
|
\
|
|
if (r2sp) { \
|
|
t.fld = do_frsp(env, t.fld, GETPC()); \
|
|
} \
|
|
\
|
|
if (sfifprf) { \
|
|
helper_compute_fprf_float64(env, t.fld); \
|
|
} \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, sfifprf, GETPC()); \
|
|
}
|
|
|
|
VSX_DIV(xsdivdp, 1, float64, VsrD(0), 1, 0)
|
|
VSX_DIV(xsdivsp, 1, float64, VsrD(0), 1, 1)
|
|
VSX_DIV(xvdivdp, 2, float64, VsrD(i), 0, 0)
|
|
VSX_DIV(xvdivsp, 4, float32, VsrW(i), 0, 0)
|
|
|
|
void helper_xsdivqp(CPUPPCState *env, uint32_t opcode,
|
|
ppc_vsr_t *xt, ppc_vsr_t *xa, ppc_vsr_t *xb)
|
|
{
|
|
ppc_vsr_t t = *xt;
|
|
float_status tstat;
|
|
|
|
helper_reset_fpstatus(env);
|
|
tstat = env->fp_status;
|
|
if (unlikely(Rc(opcode) != 0)) {
|
|
tstat.float_rounding_mode = float_round_to_odd;
|
|
}
|
|
|
|
set_float_exception_flags(0, &tstat);
|
|
t.f128 = float128_div(xa->f128, xb->f128, &tstat);
|
|
env->fp_status.float_exception_flags |= tstat.float_exception_flags;
|
|
|
|
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) {
|
|
float_invalid_op_div(env, tstat.float_exception_flags, 1, GETPC());
|
|
}
|
|
if (unlikely(tstat.float_exception_flags & float_flag_divbyzero)) {
|
|
float_zero_divide_excp(env, GETPC());
|
|
}
|
|
|
|
helper_compute_fprf_float128(env, t.f128);
|
|
*xt = t;
|
|
do_float_check_status(env, true, GETPC());
|
|
}
|
|
|
|
/*
|
|
* VSX_RE - VSX floating point reciprocal estimate
|
|
* op - instruction mnemonic
|
|
* nels - number of elements (1, 2 or 4)
|
|
* tp - type (float32 or float64)
|
|
* fld - vsr_t field (VsrD(*) or VsrW(*))
|
|
* sfifprf - set FI and FPRF
|
|
*/
|
|
#define VSX_RE(op, nels, tp, fld, sfifprf, r2sp) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
if (unlikely(tp##_is_signaling_nan(xb->fld, &env->fp_status))) { \
|
|
float_invalid_op_vxsnan(env, GETPC()); \
|
|
} \
|
|
t.fld = tp##_div(tp##_one, xb->fld, &env->fp_status); \
|
|
\
|
|
if (r2sp) { \
|
|
t.fld = do_frsp(env, t.fld, GETPC()); \
|
|
} \
|
|
\
|
|
if (sfifprf) { \
|
|
helper_compute_fprf_float64(env, t.fld); \
|
|
} \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, sfifprf, GETPC()); \
|
|
}
|
|
|
|
VSX_RE(xsredp, 1, float64, VsrD(0), 1, 0)
|
|
VSX_RE(xsresp, 1, float64, VsrD(0), 1, 1)
|
|
VSX_RE(xvredp, 2, float64, VsrD(i), 0, 0)
|
|
VSX_RE(xvresp, 4, float32, VsrW(i), 0, 0)
|
|
|
|
/*
|
|
* VSX_SQRT - VSX floating point square root
|
|
* op - instruction mnemonic
|
|
* nels - number of elements (1, 2 or 4)
|
|
* tp - type (float32 or float64)
|
|
* fld - vsr_t field (VsrD(*) or VsrW(*))
|
|
* sfifprf - set FI and FPRF
|
|
*/
|
|
#define VSX_SQRT(op, nels, tp, fld, sfifprf, r2sp) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
float_status tstat = env->fp_status; \
|
|
set_float_exception_flags(0, &tstat); \
|
|
t.fld = tp##_sqrt(xb->fld, &tstat); \
|
|
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
|
|
\
|
|
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
|
|
float_invalid_op_sqrt(env, tstat.float_exception_flags, \
|
|
sfifprf, GETPC()); \
|
|
} \
|
|
\
|
|
if (r2sp) { \
|
|
t.fld = do_frsp(env, t.fld, GETPC()); \
|
|
} \
|
|
\
|
|
if (sfifprf) { \
|
|
helper_compute_fprf_float64(env, t.fld); \
|
|
} \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, sfifprf, GETPC()); \
|
|
}
|
|
|
|
VSX_SQRT(xssqrtdp, 1, float64, VsrD(0), 1, 0)
|
|
VSX_SQRT(xssqrtsp, 1, float64, VsrD(0), 1, 1)
|
|
VSX_SQRT(xvsqrtdp, 2, float64, VsrD(i), 0, 0)
|
|
VSX_SQRT(xvsqrtsp, 4, float32, VsrW(i), 0, 0)
|
|
|
|
/*
|
|
*VSX_RSQRTE - VSX floating point reciprocal square root estimate
|
|
* op - instruction mnemonic
|
|
* nels - number of elements (1, 2 or 4)
|
|
* tp - type (float32 or float64)
|
|
* fld - vsr_t field (VsrD(*) or VsrW(*))
|
|
* sfifprf - set FI and FPRF
|
|
*/
|
|
#define VSX_RSQRTE(op, nels, tp, fld, sfifprf, r2sp) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
float_status tstat = env->fp_status; \
|
|
set_float_exception_flags(0, &tstat); \
|
|
t.fld = tp##_sqrt(xb->fld, &tstat); \
|
|
t.fld = tp##_div(tp##_one, t.fld, &tstat); \
|
|
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
|
|
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
|
|
float_invalid_op_sqrt(env, tstat.float_exception_flags, \
|
|
sfifprf, GETPC()); \
|
|
} \
|
|
if (r2sp) { \
|
|
t.fld = do_frsp(env, t.fld, GETPC()); \
|
|
} \
|
|
\
|
|
if (sfifprf) { \
|
|
helper_compute_fprf_float64(env, t.fld); \
|
|
} \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, sfifprf, GETPC()); \
|
|
}
|
|
|
|
VSX_RSQRTE(xsrsqrtedp, 1, float64, VsrD(0), 1, 0)
|
|
VSX_RSQRTE(xsrsqrtesp, 1, float64, VsrD(0), 1, 1)
|
|
VSX_RSQRTE(xvrsqrtedp, 2, float64, VsrD(i), 0, 0)
|
|
VSX_RSQRTE(xvrsqrtesp, 4, float32, VsrW(i), 0, 0)
|
|
|
|
/*
|
|
* VSX_TDIV - VSX floating point test for divide
|
|
* op - instruction mnemonic
|
|
* nels - number of elements (1, 2 or 4)
|
|
* tp - type (float32 or float64)
|
|
* fld - vsr_t field (VsrD(*) or VsrW(*))
|
|
* emin - minimum unbiased exponent
|
|
* emax - maximum unbiased exponent
|
|
* nbits - number of fraction bits
|
|
*/
|
|
#define VSX_TDIV(op, nels, tp, fld, emin, emax, nbits) \
|
|
void helper_##op(CPUPPCState *env, uint32_t opcode, \
|
|
ppc_vsr_t *xa, ppc_vsr_t *xb) \
|
|
{ \
|
|
int i; \
|
|
int fe_flag = 0; \
|
|
int fg_flag = 0; \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
if (unlikely(tp##_is_infinity(xa->fld) || \
|
|
tp##_is_infinity(xb->fld) || \
|
|
tp##_is_zero(xb->fld))) { \
|
|
fe_flag = 1; \
|
|
fg_flag = 1; \
|
|
} else { \
|
|
int e_a = ppc_##tp##_get_unbiased_exp(xa->fld); \
|
|
int e_b = ppc_##tp##_get_unbiased_exp(xb->fld); \
|
|
\
|
|
if (unlikely(tp##_is_any_nan(xa->fld) || \
|
|
tp##_is_any_nan(xb->fld))) { \
|
|
fe_flag = 1; \
|
|
} else if ((e_b <= emin) || (e_b >= (emax - 2))) { \
|
|
fe_flag = 1; \
|
|
} else if (!tp##_is_zero(xa->fld) && \
|
|
(((e_a - e_b) >= emax) || \
|
|
((e_a - e_b) <= (emin + 1)) || \
|
|
(e_a <= (emin + nbits)))) { \
|
|
fe_flag = 1; \
|
|
} \
|
|
\
|
|
if (unlikely(tp##_is_zero_or_denormal(xb->fld))) { \
|
|
/* \
|
|
* XB is not zero because of the above check and so \
|
|
* must be denormalized. \
|
|
*/ \
|
|
fg_flag = 1; \
|
|
} \
|
|
} \
|
|
} \
|
|
\
|
|
env->crf[BF(opcode)] = 0x8 | (fg_flag ? 4 : 0) | (fe_flag ? 2 : 0); \
|
|
}
|
|
|
|
VSX_TDIV(xstdivdp, 1, float64, VsrD(0), -1022, 1023, 52)
|
|
VSX_TDIV(xvtdivdp, 2, float64, VsrD(i), -1022, 1023, 52)
|
|
VSX_TDIV(xvtdivsp, 4, float32, VsrW(i), -126, 127, 23)
|
|
|
|
/*
|
|
* VSX_TSQRT - VSX floating point test for square root
|
|
* op - instruction mnemonic
|
|
* nels - number of elements (1, 2 or 4)
|
|
* tp - type (float32 or float64)
|
|
* fld - vsr_t field (VsrD(*) or VsrW(*))
|
|
* emin - minimum unbiased exponent
|
|
* emax - maximum unbiased exponent
|
|
* nbits - number of fraction bits
|
|
*/
|
|
#define VSX_TSQRT(op, nels, tp, fld, emin, nbits) \
|
|
void helper_##op(CPUPPCState *env, uint32_t opcode, ppc_vsr_t *xb) \
|
|
{ \
|
|
int i; \
|
|
int fe_flag = 0; \
|
|
int fg_flag = 0; \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
if (unlikely(tp##_is_infinity(xb->fld) || \
|
|
tp##_is_zero(xb->fld))) { \
|
|
fe_flag = 1; \
|
|
fg_flag = 1; \
|
|
} else { \
|
|
int e_b = ppc_##tp##_get_unbiased_exp(xb->fld); \
|
|
\
|
|
if (unlikely(tp##_is_any_nan(xb->fld))) { \
|
|
fe_flag = 1; \
|
|
} else if (unlikely(tp##_is_zero(xb->fld))) { \
|
|
fe_flag = 1; \
|
|
} else if (unlikely(tp##_is_neg(xb->fld))) { \
|
|
fe_flag = 1; \
|
|
} else if (!tp##_is_zero(xb->fld) && \
|
|
(e_b <= (emin + nbits))) { \
|
|
fe_flag = 1; \
|
|
} \
|
|
\
|
|
if (unlikely(tp##_is_zero_or_denormal(xb->fld))) { \
|
|
/* \
|
|
* XB is not zero because of the above check and \
|
|
* therefore must be denormalized. \
|
|
*/ \
|
|
fg_flag = 1; \
|
|
} \
|
|
} \
|
|
} \
|
|
\
|
|
env->crf[BF(opcode)] = 0x8 | (fg_flag ? 4 : 0) | (fe_flag ? 2 : 0); \
|
|
}
|
|
|
|
VSX_TSQRT(xstsqrtdp, 1, float64, VsrD(0), -1022, 52)
|
|
VSX_TSQRT(xvtsqrtdp, 2, float64, VsrD(i), -1022, 52)
|
|
VSX_TSQRT(xvtsqrtsp, 4, float32, VsrW(i), -126, 23)
|
|
|
|
/*
|
|
* VSX_MADD - VSX floating point muliply/add variations
|
|
* op - instruction mnemonic
|
|
* nels - number of elements (1, 2 or 4)
|
|
* tp - type (float32 or float64)
|
|
* fld - vsr_t field (VsrD(*) or VsrW(*))
|
|
* maddflgs - flags for the float*muladd routine that control the
|
|
* various forms (madd, msub, nmadd, nmsub)
|
|
* sfifprf - set FI and FPRF
|
|
*/
|
|
#define VSX_MADD(op, nels, tp, fld, maddflgs, sfifprf) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, \
|
|
ppc_vsr_t *s1, ppc_vsr_t *s2, ppc_vsr_t *s3) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
float_status tstat = env->fp_status; \
|
|
set_float_exception_flags(0, &tstat); \
|
|
t.fld = tp##_muladd(s1->fld, s3->fld, s2->fld, maddflgs, &tstat); \
|
|
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
|
|
\
|
|
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
|
|
float_invalid_op_madd(env, tstat.float_exception_flags, \
|
|
sfifprf, GETPC()); \
|
|
} \
|
|
\
|
|
if (sfifprf) { \
|
|
helper_compute_fprf_float64(env, t.fld); \
|
|
} \
|
|
} \
|
|
*xt = t; \
|
|
do_float_check_status(env, sfifprf, GETPC()); \
|
|
}
|
|
|
|
VSX_MADD(XSMADDDP, 1, float64, VsrD(0), MADD_FLGS, 1)
|
|
VSX_MADD(XSMSUBDP, 1, float64, VsrD(0), MSUB_FLGS, 1)
|
|
VSX_MADD(XSNMADDDP, 1, float64, VsrD(0), NMADD_FLGS, 1)
|
|
VSX_MADD(XSNMSUBDP, 1, float64, VsrD(0), NMSUB_FLGS, 1)
|
|
VSX_MADD(XSMADDSP, 1, float64r32, VsrD(0), MADD_FLGS, 1)
|
|
VSX_MADD(XSMSUBSP, 1, float64r32, VsrD(0), MSUB_FLGS, 1)
|
|
VSX_MADD(XSNMADDSP, 1, float64r32, VsrD(0), NMADD_FLGS, 1)
|
|
VSX_MADD(XSNMSUBSP, 1, float64r32, VsrD(0), NMSUB_FLGS, 1)
|
|
|
|
VSX_MADD(xvmadddp, 2, float64, VsrD(i), MADD_FLGS, 0)
|
|
VSX_MADD(xvmsubdp, 2, float64, VsrD(i), MSUB_FLGS, 0)
|
|
VSX_MADD(xvnmadddp, 2, float64, VsrD(i), NMADD_FLGS, 0)
|
|
VSX_MADD(xvnmsubdp, 2, float64, VsrD(i), NMSUB_FLGS, 0)
|
|
|
|
VSX_MADD(xvmaddsp, 4, float32, VsrW(i), MADD_FLGS, 0)
|
|
VSX_MADD(xvmsubsp, 4, float32, VsrW(i), MSUB_FLGS, 0)
|
|
VSX_MADD(xvnmaddsp, 4, float32, VsrW(i), NMADD_FLGS, 0)
|
|
VSX_MADD(xvnmsubsp, 4, float32, VsrW(i), NMSUB_FLGS, 0)
|
|
|
|
/*
|
|
* VSX_MADDQ - VSX floating point quad-precision muliply/add
|
|
* op - instruction mnemonic
|
|
* maddflgs - flags for the float*muladd routine that control the
|
|
* various forms (madd, msub, nmadd, nmsub)
|
|
* ro - round to odd
|
|
*/
|
|
#define VSX_MADDQ(op, maddflgs, ro) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *s1, ppc_vsr_t *s2,\
|
|
ppc_vsr_t *s3) \
|
|
{ \
|
|
ppc_vsr_t t = *xt; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
float_status tstat = env->fp_status; \
|
|
set_float_exception_flags(0, &tstat); \
|
|
if (ro) { \
|
|
tstat.float_rounding_mode = float_round_to_odd; \
|
|
} \
|
|
t.f128 = float128_muladd(s1->f128, s3->f128, s2->f128, maddflgs, &tstat); \
|
|
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
|
|
\
|
|
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
|
|
float_invalid_op_madd(env, tstat.float_exception_flags, \
|
|
false, GETPC()); \
|
|
} \
|
|
\
|
|
helper_compute_fprf_float128(env, t.f128); \
|
|
*xt = t; \
|
|
do_float_check_status(env, true, GETPC()); \
|
|
}
|
|
|
|
VSX_MADDQ(XSMADDQP, MADD_FLGS, 0)
|
|
VSX_MADDQ(XSMADDQPO, MADD_FLGS, 1)
|
|
VSX_MADDQ(XSMSUBQP, MSUB_FLGS, 0)
|
|
VSX_MADDQ(XSMSUBQPO, MSUB_FLGS, 1)
|
|
VSX_MADDQ(XSNMADDQP, NMADD_FLGS, 0)
|
|
VSX_MADDQ(XSNMADDQPO, NMADD_FLGS, 1)
|
|
VSX_MADDQ(XSNMSUBQP, NMSUB_FLGS, 0)
|
|
VSX_MADDQ(XSNMSUBQPO, NMSUB_FLGS, 0)
|
|
|
|
/*
|
|
* VSX_SCALAR_CMP - VSX scalar floating point compare
|
|
* op - instruction mnemonic
|
|
* tp - type
|
|
* cmp - comparison operation
|
|
* fld - vsr_t field
|
|
* svxvc - set VXVC bit
|
|
*/
|
|
#define VSX_SCALAR_CMP(op, tp, cmp, fld, svxvc) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, \
|
|
ppc_vsr_t *xa, ppc_vsr_t *xb) \
|
|
{ \
|
|
int flags; \
|
|
bool r, vxvc; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
if (svxvc) { \
|
|
r = tp##_##cmp(xb->fld, xa->fld, &env->fp_status); \
|
|
} else { \
|
|
r = tp##_##cmp##_quiet(xb->fld, xa->fld, &env->fp_status); \
|
|
} \
|
|
\
|
|
flags = get_float_exception_flags(&env->fp_status); \
|
|
if (unlikely(flags & float_flag_invalid)) { \
|
|
vxvc = svxvc; \
|
|
if (flags & float_flag_invalid_snan) { \
|
|
float_invalid_op_vxsnan(env, GETPC()); \
|
|
vxvc &= !(env->fpscr & FP_VE); \
|
|
} \
|
|
if (vxvc) { \
|
|
float_invalid_op_vxvc(env, 0, GETPC()); \
|
|
} \
|
|
} \
|
|
\
|
|
memset(xt, 0, sizeof(*xt)); \
|
|
memset(&xt->fld, -r, sizeof(xt->fld)); \
|
|
do_float_check_status(env, false, GETPC()); \
|
|
}
|
|
|
|
VSX_SCALAR_CMP(XSCMPEQDP, float64, eq, VsrD(0), 0)
|
|
VSX_SCALAR_CMP(XSCMPGEDP, float64, le, VsrD(0), 1)
|
|
VSX_SCALAR_CMP(XSCMPGTDP, float64, lt, VsrD(0), 1)
|
|
VSX_SCALAR_CMP(XSCMPEQQP, float128, eq, f128, 0)
|
|
VSX_SCALAR_CMP(XSCMPGEQP, float128, le, f128, 1)
|
|
VSX_SCALAR_CMP(XSCMPGTQP, float128, lt, f128, 1)
|
|
|
|
void helper_xscmpexpdp(CPUPPCState *env, uint32_t opcode,
|
|
ppc_vsr_t *xa, ppc_vsr_t *xb)
|
|
{
|
|
int64_t exp_a, exp_b;
|
|
uint32_t cc;
|
|
|
|
exp_a = extract64(xa->VsrD(0), 52, 11);
|
|
exp_b = extract64(xb->VsrD(0), 52, 11);
|
|
|
|
if (unlikely(float64_is_any_nan(xa->VsrD(0)) ||
|
|
float64_is_any_nan(xb->VsrD(0)))) {
|
|
cc = CRF_SO;
|
|
} else {
|
|
if (exp_a < exp_b) {
|
|
cc = CRF_LT;
|
|
} else if (exp_a > exp_b) {
|
|
cc = CRF_GT;
|
|
} else {
|
|
cc = CRF_EQ;
|
|
}
|
|
}
|
|
|
|
env->fpscr &= ~FP_FPCC;
|
|
env->fpscr |= cc << FPSCR_FPCC;
|
|
env->crf[BF(opcode)] = cc;
|
|
|
|
do_float_check_status(env, false, GETPC());
|
|
}
|
|
|
|
void helper_xscmpexpqp(CPUPPCState *env, uint32_t opcode,
|
|
ppc_vsr_t *xa, ppc_vsr_t *xb)
|
|
{
|
|
int64_t exp_a, exp_b;
|
|
uint32_t cc;
|
|
|
|
exp_a = extract64(xa->VsrD(0), 48, 15);
|
|
exp_b = extract64(xb->VsrD(0), 48, 15);
|
|
|
|
if (unlikely(float128_is_any_nan(xa->f128) ||
|
|
float128_is_any_nan(xb->f128))) {
|
|
cc = CRF_SO;
|
|
} else {
|
|
if (exp_a < exp_b) {
|
|
cc = CRF_LT;
|
|
} else if (exp_a > exp_b) {
|
|
cc = CRF_GT;
|
|
} else {
|
|
cc = CRF_EQ;
|
|
}
|
|
}
|
|
|
|
env->fpscr &= ~FP_FPCC;
|
|
env->fpscr |= cc << FPSCR_FPCC;
|
|
env->crf[BF(opcode)] = cc;
|
|
|
|
do_float_check_status(env, false, GETPC());
|
|
}
|
|
|
|
static inline void do_scalar_cmp(CPUPPCState *env, ppc_vsr_t *xa, ppc_vsr_t *xb,
|
|
int crf_idx, bool ordered)
|
|
{
|
|
uint32_t cc;
|
|
bool vxsnan_flag = false, vxvc_flag = false;
|
|
|
|
helper_reset_fpstatus(env);
|
|
|
|
switch (float64_compare(xa->VsrD(0), xb->VsrD(0), &env->fp_status)) {
|
|
case float_relation_less:
|
|
cc = CRF_LT;
|
|
break;
|
|
case float_relation_equal:
|
|
cc = CRF_EQ;
|
|
break;
|
|
case float_relation_greater:
|
|
cc = CRF_GT;
|
|
break;
|
|
case float_relation_unordered:
|
|
cc = CRF_SO;
|
|
|
|
if (float64_is_signaling_nan(xa->VsrD(0), &env->fp_status) ||
|
|
float64_is_signaling_nan(xb->VsrD(0), &env->fp_status)) {
|
|
vxsnan_flag = true;
|
|
if (!(env->fpscr & FP_VE) && ordered) {
|
|
vxvc_flag = true;
|
|
}
|
|
} else if (float64_is_quiet_nan(xa->VsrD(0), &env->fp_status) ||
|
|
float64_is_quiet_nan(xb->VsrD(0), &env->fp_status)) {
|
|
if (ordered) {
|
|
vxvc_flag = true;
|
|
}
|
|
}
|
|
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
env->fpscr &= ~FP_FPCC;
|
|
env->fpscr |= cc << FPSCR_FPCC;
|
|
env->crf[crf_idx] = cc;
|
|
|
|
if (vxsnan_flag) {
|
|
float_invalid_op_vxsnan(env, GETPC());
|
|
}
|
|
if (vxvc_flag) {
|
|
float_invalid_op_vxvc(env, 0, GETPC());
|
|
}
|
|
|
|
do_float_check_status(env, false, GETPC());
|
|
}
|
|
|
|
void helper_xscmpodp(CPUPPCState *env, uint32_t opcode, ppc_vsr_t *xa,
|
|
ppc_vsr_t *xb)
|
|
{
|
|
do_scalar_cmp(env, xa, xb, BF(opcode), true);
|
|
}
|
|
|
|
void helper_xscmpudp(CPUPPCState *env, uint32_t opcode, ppc_vsr_t *xa,
|
|
ppc_vsr_t *xb)
|
|
{
|
|
do_scalar_cmp(env, xa, xb, BF(opcode), false);
|
|
}
|
|
|
|
static inline void do_scalar_cmpq(CPUPPCState *env, ppc_vsr_t *xa,
|
|
ppc_vsr_t *xb, int crf_idx, bool ordered)
|
|
{
|
|
uint32_t cc;
|
|
bool vxsnan_flag = false, vxvc_flag = false;
|
|
|
|
helper_reset_fpstatus(env);
|
|
|
|
switch (float128_compare(xa->f128, xb->f128, &env->fp_status)) {
|
|
case float_relation_less:
|
|
cc = CRF_LT;
|
|
break;
|
|
case float_relation_equal:
|
|
cc = CRF_EQ;
|
|
break;
|
|
case float_relation_greater:
|
|
cc = CRF_GT;
|
|
break;
|
|
case float_relation_unordered:
|
|
cc = CRF_SO;
|
|
|
|
if (float128_is_signaling_nan(xa->f128, &env->fp_status) ||
|
|
float128_is_signaling_nan(xb->f128, &env->fp_status)) {
|
|
vxsnan_flag = true;
|
|
if (!(env->fpscr & FP_VE) && ordered) {
|
|
vxvc_flag = true;
|
|
}
|
|
} else if (float128_is_quiet_nan(xa->f128, &env->fp_status) ||
|
|
float128_is_quiet_nan(xb->f128, &env->fp_status)) {
|
|
if (ordered) {
|
|
vxvc_flag = true;
|
|
}
|
|
}
|
|
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
env->fpscr &= ~FP_FPCC;
|
|
env->fpscr |= cc << FPSCR_FPCC;
|
|
env->crf[crf_idx] = cc;
|
|
|
|
if (vxsnan_flag) {
|
|
float_invalid_op_vxsnan(env, GETPC());
|
|
}
|
|
if (vxvc_flag) {
|
|
float_invalid_op_vxvc(env, 0, GETPC());
|
|
}
|
|
|
|
do_float_check_status(env, false, GETPC());
|
|
}
|
|
|
|
void helper_xscmpoqp(CPUPPCState *env, uint32_t opcode, ppc_vsr_t *xa,
|
|
ppc_vsr_t *xb)
|
|
{
|
|
do_scalar_cmpq(env, xa, xb, BF(opcode), true);
|
|
}
|
|
|
|
void helper_xscmpuqp(CPUPPCState *env, uint32_t opcode, ppc_vsr_t *xa,
|
|
ppc_vsr_t *xb)
|
|
{
|
|
do_scalar_cmpq(env, xa, xb, BF(opcode), false);
|
|
}
|
|
|
|
/*
|
|
* VSX_MAX_MIN - VSX floating point maximum/minimum
|
|
* name - instruction mnemonic
|
|
* op - operation (max or min)
|
|
* nels - number of elements (1, 2 or 4)
|
|
* tp - type (float32 or float64)
|
|
* fld - vsr_t field (VsrD(*) or VsrW(*))
|
|
*/
|
|
#define VSX_MAX_MIN(name, op, nels, tp, fld) \
|
|
void helper_##name(CPUPPCState *env, ppc_vsr_t *xt, \
|
|
ppc_vsr_t *xa, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i; \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
t.fld = tp##_##op(xa->fld, xb->fld, &env->fp_status); \
|
|
if (unlikely(tp##_is_signaling_nan(xa->fld, &env->fp_status) || \
|
|
tp##_is_signaling_nan(xb->fld, &env->fp_status))) { \
|
|
float_invalid_op_vxsnan(env, GETPC()); \
|
|
} \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, false, GETPC()); \
|
|
}
|
|
|
|
VSX_MAX_MIN(xsmaxdp, maxnum, 1, float64, VsrD(0))
|
|
VSX_MAX_MIN(xvmaxdp, maxnum, 2, float64, VsrD(i))
|
|
VSX_MAX_MIN(xvmaxsp, maxnum, 4, float32, VsrW(i))
|
|
VSX_MAX_MIN(xsmindp, minnum, 1, float64, VsrD(0))
|
|
VSX_MAX_MIN(xvmindp, minnum, 2, float64, VsrD(i))
|
|
VSX_MAX_MIN(xvminsp, minnum, 4, float32, VsrW(i))
|
|
|
|
#define VSX_MAX_MINC(name, max, tp, fld) \
|
|
void helper_##name(CPUPPCState *env, \
|
|
ppc_vsr_t *xt, ppc_vsr_t *xa, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
bool first; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
if (max) { \
|
|
first = tp##_le_quiet(xb->fld, xa->fld, &env->fp_status); \
|
|
} else { \
|
|
first = tp##_lt_quiet(xa->fld, xb->fld, &env->fp_status); \
|
|
} \
|
|
\
|
|
if (first) { \
|
|
t.fld = xa->fld; \
|
|
} else { \
|
|
t.fld = xb->fld; \
|
|
if (env->fp_status.float_exception_flags & float_flag_invalid_snan) { \
|
|
float_invalid_op_vxsnan(env, GETPC()); \
|
|
} \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
}
|
|
|
|
VSX_MAX_MINC(XSMAXCDP, true, float64, VsrD(0));
|
|
VSX_MAX_MINC(XSMINCDP, false, float64, VsrD(0));
|
|
VSX_MAX_MINC(XSMAXCQP, true, float128, f128);
|
|
VSX_MAX_MINC(XSMINCQP, false, float128, f128);
|
|
|
|
#define VSX_MAX_MINJ(name, max) \
|
|
void helper_##name(CPUPPCState *env, \
|
|
ppc_vsr_t *xt, ppc_vsr_t *xa, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
bool vxsnan_flag = false, vex_flag = false; \
|
|
\
|
|
if (unlikely(float64_is_any_nan(xa->VsrD(0)))) { \
|
|
if (float64_is_signaling_nan(xa->VsrD(0), &env->fp_status)) { \
|
|
vxsnan_flag = true; \
|
|
} \
|
|
t.VsrD(0) = xa->VsrD(0); \
|
|
} else if (unlikely(float64_is_any_nan(xb->VsrD(0)))) { \
|
|
if (float64_is_signaling_nan(xb->VsrD(0), &env->fp_status)) { \
|
|
vxsnan_flag = true; \
|
|
} \
|
|
t.VsrD(0) = xb->VsrD(0); \
|
|
} else if (float64_is_zero(xa->VsrD(0)) && \
|
|
float64_is_zero(xb->VsrD(0))) { \
|
|
if (max) { \
|
|
if (!float64_is_neg(xa->VsrD(0)) || \
|
|
!float64_is_neg(xb->VsrD(0))) { \
|
|
t.VsrD(0) = 0ULL; \
|
|
} else { \
|
|
t.VsrD(0) = 0x8000000000000000ULL; \
|
|
} \
|
|
} else { \
|
|
if (float64_is_neg(xa->VsrD(0)) || \
|
|
float64_is_neg(xb->VsrD(0))) { \
|
|
t.VsrD(0) = 0x8000000000000000ULL; \
|
|
} else { \
|
|
t.VsrD(0) = 0ULL; \
|
|
} \
|
|
} \
|
|
} else if ((max && \
|
|
!float64_lt(xa->VsrD(0), xb->VsrD(0), &env->fp_status)) || \
|
|
(!max && \
|
|
float64_lt(xa->VsrD(0), xb->VsrD(0), &env->fp_status))) { \
|
|
t.VsrD(0) = xa->VsrD(0); \
|
|
} else { \
|
|
t.VsrD(0) = xb->VsrD(0); \
|
|
} \
|
|
\
|
|
vex_flag = (env->fpscr & FP_VE) && vxsnan_flag; \
|
|
if (vxsnan_flag) { \
|
|
float_invalid_op_vxsnan(env, GETPC()); \
|
|
} \
|
|
if (!vex_flag) { \
|
|
*xt = t; \
|
|
} \
|
|
} \
|
|
|
|
VSX_MAX_MINJ(XSMAXJDP, 1);
|
|
VSX_MAX_MINJ(XSMINJDP, 0);
|
|
|
|
/*
|
|
* VSX_CMP - VSX floating point compare
|
|
* op - instruction mnemonic
|
|
* nels - number of elements (1, 2 or 4)
|
|
* tp - type (float32 or float64)
|
|
* fld - vsr_t field (VsrD(*) or VsrW(*))
|
|
* cmp - comparison operation
|
|
* svxvc - set VXVC bit
|
|
* exp - expected result of comparison
|
|
*/
|
|
#define VSX_CMP(op, nels, tp, fld, cmp, svxvc, exp) \
|
|
uint32_t helper_##op(CPUPPCState *env, ppc_vsr_t *xt, \
|
|
ppc_vsr_t *xa, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = *xt; \
|
|
uint32_t crf6 = 0; \
|
|
int i; \
|
|
int all_true = 1; \
|
|
int all_false = 1; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
if (unlikely(tp##_is_any_nan(xa->fld) || \
|
|
tp##_is_any_nan(xb->fld))) { \
|
|
if (tp##_is_signaling_nan(xa->fld, &env->fp_status) || \
|
|
tp##_is_signaling_nan(xb->fld, &env->fp_status)) { \
|
|
float_invalid_op_vxsnan(env, GETPC()); \
|
|
} \
|
|
if (svxvc) { \
|
|
float_invalid_op_vxvc(env, 0, GETPC()); \
|
|
} \
|
|
t.fld = 0; \
|
|
all_true = 0; \
|
|
} else { \
|
|
if (tp##_##cmp(xb->fld, xa->fld, &env->fp_status) == exp) { \
|
|
t.fld = -1; \
|
|
all_false = 0; \
|
|
} else { \
|
|
t.fld = 0; \
|
|
all_true = 0; \
|
|
} \
|
|
} \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
crf6 = (all_true ? 0x8 : 0) | (all_false ? 0x2 : 0); \
|
|
return crf6; \
|
|
}
|
|
|
|
VSX_CMP(xvcmpeqdp, 2, float64, VsrD(i), eq, 0, 1)
|
|
VSX_CMP(xvcmpgedp, 2, float64, VsrD(i), le, 1, 1)
|
|
VSX_CMP(xvcmpgtdp, 2, float64, VsrD(i), lt, 1, 1)
|
|
VSX_CMP(xvcmpnedp, 2, float64, VsrD(i), eq, 0, 0)
|
|
VSX_CMP(xvcmpeqsp, 4, float32, VsrW(i), eq, 0, 1)
|
|
VSX_CMP(xvcmpgesp, 4, float32, VsrW(i), le, 1, 1)
|
|
VSX_CMP(xvcmpgtsp, 4, float32, VsrW(i), lt, 1, 1)
|
|
VSX_CMP(xvcmpnesp, 4, float32, VsrW(i), eq, 0, 0)
|
|
|
|
/*
|
|
* VSX_CVT_FP_TO_FP - VSX floating point/floating point conversion
|
|
* op - instruction mnemonic
|
|
* nels - number of elements (1, 2 or 4)
|
|
* stp - source type (float32 or float64)
|
|
* ttp - target type (float32 or float64)
|
|
* sfld - source vsr_t field
|
|
* tfld - target vsr_t field (f32 or f64)
|
|
* sfifprf - set FI and FPRF
|
|
*/
|
|
#define VSX_CVT_FP_TO_FP(op, nels, stp, ttp, sfld, tfld, sfifprf) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
t.tfld = stp##_to_##ttp(xb->sfld, &env->fp_status); \
|
|
if (unlikely(stp##_is_signaling_nan(xb->sfld, \
|
|
&env->fp_status))) { \
|
|
float_invalid_op_vxsnan(env, GETPC()); \
|
|
t.tfld = ttp##_snan_to_qnan(t.tfld); \
|
|
} \
|
|
if (sfifprf) { \
|
|
helper_compute_fprf_##ttp(env, t.tfld); \
|
|
} \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, sfifprf, GETPC()); \
|
|
}
|
|
|
|
VSX_CVT_FP_TO_FP(xscvspdp, 1, float32, float64, VsrW(0), VsrD(0), 1)
|
|
VSX_CVT_FP_TO_FP(xvcvspdp, 2, float32, float64, VsrW(2 * i), VsrD(i), 0)
|
|
|
|
#define VSX_CVT_FP_TO_FP2(op, nels, stp, ttp, sfifprf) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
t.VsrW(2 * i) = stp##_to_##ttp(xb->VsrD(i), &env->fp_status); \
|
|
if (unlikely(stp##_is_signaling_nan(xb->VsrD(i), \
|
|
&env->fp_status))) { \
|
|
float_invalid_op_vxsnan(env, GETPC()); \
|
|
t.VsrW(2 * i) = ttp##_snan_to_qnan(t.VsrW(2 * i)); \
|
|
} \
|
|
if (sfifprf) { \
|
|
helper_compute_fprf_##ttp(env, t.VsrW(2 * i)); \
|
|
} \
|
|
t.VsrW(2 * i + 1) = t.VsrW(2 * i); \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, sfifprf, GETPC()); \
|
|
}
|
|
|
|
VSX_CVT_FP_TO_FP2(xvcvdpsp, 2, float64, float32, 0)
|
|
VSX_CVT_FP_TO_FP2(xscvdpsp, 1, float64, float32, 1)
|
|
|
|
/*
|
|
* VSX_CVT_FP_TO_FP_VECTOR - VSX floating point/floating point conversion
|
|
* op - instruction mnemonic
|
|
* nels - number of elements (1, 2 or 4)
|
|
* stp - source type (float32 or float64)
|
|
* ttp - target type (float32 or float64)
|
|
* sfld - source vsr_t field
|
|
* tfld - target vsr_t field (f32 or f64)
|
|
* sfprf - set FPRF
|
|
*/
|
|
#define VSX_CVT_FP_TO_FP_VECTOR(op, nels, stp, ttp, sfld, tfld, sfprf) \
|
|
void helper_##op(CPUPPCState *env, uint32_t opcode, \
|
|
ppc_vsr_t *xt, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = *xt; \
|
|
int i; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
t.tfld = stp##_to_##ttp(xb->sfld, &env->fp_status); \
|
|
if (unlikely(stp##_is_signaling_nan(xb->sfld, \
|
|
&env->fp_status))) { \
|
|
float_invalid_op_vxsnan(env, GETPC()); \
|
|
t.tfld = ttp##_snan_to_qnan(t.tfld); \
|
|
} \
|
|
if (sfprf) { \
|
|
helper_compute_fprf_##ttp(env, t.tfld); \
|
|
} \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, true, GETPC()); \
|
|
}
|
|
|
|
VSX_CVT_FP_TO_FP_VECTOR(xscvdpqp, 1, float64, float128, VsrD(0), f128, 1)
|
|
|
|
/*
|
|
* VSX_CVT_FP_TO_FP_HP - VSX floating point/floating point conversion
|
|
* involving one half precision value
|
|
* op - instruction mnemonic
|
|
* nels - number of elements (1, 2 or 4)
|
|
* stp - source type
|
|
* ttp - target type
|
|
* sfld - source vsr_t field
|
|
* tfld - target vsr_t field
|
|
* sfifprf - set FI and FPRF
|
|
*/
|
|
#define VSX_CVT_FP_TO_FP_HP(op, nels, stp, ttp, sfld, tfld, sfifprf) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
t.tfld = stp##_to_##ttp(xb->sfld, 1, &env->fp_status); \
|
|
if (unlikely(stp##_is_signaling_nan(xb->sfld, \
|
|
&env->fp_status))) { \
|
|
float_invalid_op_vxsnan(env, GETPC()); \
|
|
t.tfld = ttp##_snan_to_qnan(t.tfld); \
|
|
} \
|
|
if (sfifprf) { \
|
|
helper_compute_fprf_##ttp(env, t.tfld); \
|
|
} \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, sfifprf, GETPC()); \
|
|
}
|
|
|
|
VSX_CVT_FP_TO_FP_HP(xscvdphp, 1, float64, float16, VsrD(0), VsrH(3), 1)
|
|
VSX_CVT_FP_TO_FP_HP(xscvhpdp, 1, float16, float64, VsrH(3), VsrD(0), 1)
|
|
VSX_CVT_FP_TO_FP_HP(xvcvsphp, 4, float32, float16, VsrW(i), VsrH(2 * i + 1), 0)
|
|
VSX_CVT_FP_TO_FP_HP(xvcvhpsp, 4, float16, float32, VsrH(2 * i + 1), VsrW(i), 0)
|
|
|
|
void helper_XVCVSPBF16(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb)
|
|
{
|
|
ppc_vsr_t t = { };
|
|
int i, status;
|
|
|
|
helper_reset_fpstatus(env);
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
t.VsrH(2 * i + 1) = float32_to_bfloat16(xb->VsrW(i), &env->fp_status);
|
|
}
|
|
|
|
status = get_float_exception_flags(&env->fp_status);
|
|
if (unlikely(status & float_flag_invalid_snan)) {
|
|
float_invalid_op_vxsnan(env, GETPC());
|
|
}
|
|
|
|
*xt = t;
|
|
do_float_check_status(env, false, GETPC());
|
|
}
|
|
|
|
void helper_XSCVQPDP(CPUPPCState *env, uint32_t ro, ppc_vsr_t *xt,
|
|
ppc_vsr_t *xb)
|
|
{
|
|
ppc_vsr_t t = { };
|
|
float_status tstat;
|
|
|
|
helper_reset_fpstatus(env);
|
|
|
|
tstat = env->fp_status;
|
|
if (ro != 0) {
|
|
tstat.float_rounding_mode = float_round_to_odd;
|
|
}
|
|
|
|
t.VsrD(0) = float128_to_float64(xb->f128, &tstat);
|
|
env->fp_status.float_exception_flags |= tstat.float_exception_flags;
|
|
if (unlikely(float128_is_signaling_nan(xb->f128, &tstat))) {
|
|
float_invalid_op_vxsnan(env, GETPC());
|
|
t.VsrD(0) = float64_snan_to_qnan(t.VsrD(0));
|
|
}
|
|
helper_compute_fprf_float64(env, t.VsrD(0));
|
|
|
|
*xt = t;
|
|
do_float_check_status(env, true, GETPC());
|
|
}
|
|
|
|
uint64_t helper_xscvdpspn(CPUPPCState *env, uint64_t xb)
|
|
{
|
|
uint64_t result, sign, exp, frac;
|
|
|
|
helper_reset_fpstatus(env);
|
|
float_status tstat = env->fp_status;
|
|
set_float_exception_flags(0, &tstat);
|
|
|
|
sign = extract64(xb, 63, 1);
|
|
exp = extract64(xb, 52, 11);
|
|
frac = extract64(xb, 0, 52) | 0x10000000000000ULL;
|
|
|
|
if (unlikely(exp == 0 && extract64(frac, 0, 52) != 0)) {
|
|
/* DP denormal operand. */
|
|
/* Exponent override to DP min exp. */
|
|
exp = 1;
|
|
/* Implicit bit override to 0. */
|
|
frac = deposit64(frac, 53, 1, 0);
|
|
}
|
|
|
|
if (unlikely(exp < 897 && frac != 0)) {
|
|
/* SP tiny operand. */
|
|
if (897 - exp > 63) {
|
|
frac = 0;
|
|
} else {
|
|
/* Denormalize until exp = SP min exp. */
|
|
frac >>= (897 - exp);
|
|
}
|
|
/* Exponent override to SP min exp - 1. */
|
|
exp = 896;
|
|
}
|
|
|
|
result = sign << 31;
|
|
result |= extract64(exp, 10, 1) << 30;
|
|
result |= extract64(exp, 0, 7) << 23;
|
|
result |= extract64(frac, 29, 23);
|
|
|
|
/* hardware replicates result to both words of the doubleword result. */
|
|
return (result << 32) | result;
|
|
}
|
|
|
|
uint64_t helper_XSCVSPDPN(uint64_t xb)
|
|
{
|
|
return helper_todouble(xb >> 32);
|
|
}
|
|
|
|
/*
|
|
* VSX_CVT_FP_TO_INT - VSX floating point to integer conversion
|
|
* op - instruction mnemonic
|
|
* nels - number of elements (1, 2 or 4)
|
|
* stp - source type (float32 or float64)
|
|
* ttp - target type (int32, uint32, int64 or uint64)
|
|
* sfld - source vsr_t field
|
|
* tfld - target vsr_t field
|
|
* sfi - set FI
|
|
* rnan - resulting NaN
|
|
*/
|
|
#define VSX_CVT_FP_TO_INT(op, nels, stp, ttp, sfld, tfld, sfi, rnan) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i, flags; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
t.tfld = stp##_to_##ttp##_round_to_zero(xb->sfld, &env->fp_status); \
|
|
flags = env->fp_status.float_exception_flags; \
|
|
if (unlikely(flags & float_flag_invalid)) { \
|
|
t.tfld = float_invalid_cvt(env, flags, t.tfld, rnan, 0, GETPC());\
|
|
} \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, sfi, GETPC()); \
|
|
}
|
|
|
|
VSX_CVT_FP_TO_INT(xscvdpsxds, 1, float64, int64, VsrD(0), VsrD(0), true, \
|
|
0x8000000000000000ULL)
|
|
VSX_CVT_FP_TO_INT(xscvdpuxds, 1, float64, uint64, VsrD(0), VsrD(0), true, 0ULL)
|
|
VSX_CVT_FP_TO_INT(xvcvdpsxds, 2, float64, int64, VsrD(i), VsrD(i), false, \
|
|
0x8000000000000000ULL)
|
|
VSX_CVT_FP_TO_INT(xvcvdpuxds, 2, float64, uint64, VsrD(i), VsrD(i), false, \
|
|
0ULL)
|
|
VSX_CVT_FP_TO_INT(xvcvspsxds, 2, float32, int64, VsrW(2 * i), VsrD(i), false, \
|
|
0x8000000000000000ULL)
|
|
VSX_CVT_FP_TO_INT(xvcvspsxws, 4, float32, int32, VsrW(i), VsrW(i), false, \
|
|
0x80000000ULL)
|
|
VSX_CVT_FP_TO_INT(xvcvspuxds, 2, float32, uint64, VsrW(2 * i), VsrD(i), \
|
|
false, 0ULL)
|
|
VSX_CVT_FP_TO_INT(xvcvspuxws, 4, float32, uint32, VsrW(i), VsrW(i), false, 0U)
|
|
|
|
#define VSX_CVT_FP_TO_INT128(op, tp, rnan) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t; \
|
|
int flags; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
t.s128 = float128_to_##tp##_round_to_zero(xb->f128, &env->fp_status); \
|
|
flags = get_float_exception_flags(&env->fp_status); \
|
|
if (unlikely(flags & float_flag_invalid)) { \
|
|
t.VsrD(0) = float_invalid_cvt(env, flags, t.VsrD(0), rnan, 0, GETPC());\
|
|
t.VsrD(1) = -(t.VsrD(0) & 1); \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, true, GETPC()); \
|
|
}
|
|
|
|
VSX_CVT_FP_TO_INT128(XSCVQPUQZ, uint128, 0)
|
|
VSX_CVT_FP_TO_INT128(XSCVQPSQZ, int128, 0x8000000000000000ULL);
|
|
|
|
/*
|
|
* Likewise, except that the result is duplicated into both subwords.
|
|
* Power ISA v3.1 has Programming Notes for these insns:
|
|
* Previous versions of the architecture allowed the contents of
|
|
* word 0 of the result register to be undefined. However, all
|
|
* processors that support this instruction write the result into
|
|
* words 0 and 1 (and words 2 and 3) of the result register, as
|
|
* is required by this version of the architecture.
|
|
*/
|
|
#define VSX_CVT_FP_TO_INT2(op, nels, stp, ttp, sfi, rnan) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i, flags; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
t.VsrW(2 * i) = stp##_to_##ttp##_round_to_zero(xb->VsrD(i), \
|
|
&env->fp_status); \
|
|
flags = env->fp_status.float_exception_flags; \
|
|
if (unlikely(flags & float_flag_invalid)) { \
|
|
t.VsrW(2 * i) = float_invalid_cvt(env, flags, t.VsrW(2 * i), \
|
|
rnan, 0, GETPC()); \
|
|
} \
|
|
t.VsrW(2 * i + 1) = t.VsrW(2 * i); \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, sfi, GETPC()); \
|
|
}
|
|
|
|
VSX_CVT_FP_TO_INT2(xscvdpsxws, 1, float64, int32, true, 0x80000000U)
|
|
VSX_CVT_FP_TO_INT2(xscvdpuxws, 1, float64, uint32, true, 0U)
|
|
VSX_CVT_FP_TO_INT2(xvcvdpsxws, 2, float64, int32, false, 0x80000000U)
|
|
VSX_CVT_FP_TO_INT2(xvcvdpuxws, 2, float64, uint32, false, 0U)
|
|
|
|
/*
|
|
* VSX_CVT_FP_TO_INT_VECTOR - VSX floating point to integer conversion
|
|
* op - instruction mnemonic
|
|
* stp - source type (float32 or float64)
|
|
* ttp - target type (int32, uint32, int64 or uint64)
|
|
* sfld - source vsr_t field
|
|
* tfld - target vsr_t field
|
|
* rnan - resulting NaN
|
|
*/
|
|
#define VSX_CVT_FP_TO_INT_VECTOR(op, stp, ttp, sfld, tfld, rnan) \
|
|
void helper_##op(CPUPPCState *env, uint32_t opcode, \
|
|
ppc_vsr_t *xt, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int flags; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
t.tfld = stp##_to_##ttp##_round_to_zero(xb->sfld, &env->fp_status); \
|
|
flags = get_float_exception_flags(&env->fp_status); \
|
|
if (flags & float_flag_invalid) { \
|
|
t.tfld = float_invalid_cvt(env, flags, t.tfld, rnan, 0, GETPC()); \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, true, GETPC()); \
|
|
}
|
|
|
|
VSX_CVT_FP_TO_INT_VECTOR(xscvqpsdz, float128, int64, f128, VsrD(0), \
|
|
0x8000000000000000ULL)
|
|
VSX_CVT_FP_TO_INT_VECTOR(xscvqpswz, float128, int32, f128, VsrD(0), \
|
|
0xffffffff80000000ULL)
|
|
VSX_CVT_FP_TO_INT_VECTOR(xscvqpudz, float128, uint64, f128, VsrD(0), 0x0ULL)
|
|
VSX_CVT_FP_TO_INT_VECTOR(xscvqpuwz, float128, uint32, f128, VsrD(0), 0x0ULL)
|
|
|
|
/*
|
|
* VSX_CVT_INT_TO_FP - VSX integer to floating point conversion
|
|
* op - instruction mnemonic
|
|
* nels - number of elements (1, 2 or 4)
|
|
* stp - source type (int32, uint32, int64 or uint64)
|
|
* ttp - target type (float32 or float64)
|
|
* sfld - source vsr_t field
|
|
* tfld - target vsr_t field
|
|
* jdef - definition of the j index (i or 2*i)
|
|
* sfifprf - set FI and FPRF
|
|
*/
|
|
#define VSX_CVT_INT_TO_FP(op, nels, stp, ttp, sfld, tfld, sfifprf, r2sp)\
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
t.tfld = stp##_to_##ttp(xb->sfld, &env->fp_status); \
|
|
if (r2sp) { \
|
|
t.tfld = do_frsp(env, t.tfld, GETPC()); \
|
|
} \
|
|
if (sfifprf) { \
|
|
helper_compute_fprf_float64(env, t.tfld); \
|
|
} \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, sfifprf, GETPC()); \
|
|
}
|
|
|
|
VSX_CVT_INT_TO_FP(xscvsxddp, 1, int64, float64, VsrD(0), VsrD(0), 1, 0)
|
|
VSX_CVT_INT_TO_FP(xscvuxddp, 1, uint64, float64, VsrD(0), VsrD(0), 1, 0)
|
|
VSX_CVT_INT_TO_FP(xscvsxdsp, 1, int64, float64, VsrD(0), VsrD(0), 1, 1)
|
|
VSX_CVT_INT_TO_FP(xscvuxdsp, 1, uint64, float64, VsrD(0), VsrD(0), 1, 1)
|
|
VSX_CVT_INT_TO_FP(xvcvsxddp, 2, int64, float64, VsrD(i), VsrD(i), 0, 0)
|
|
VSX_CVT_INT_TO_FP(xvcvuxddp, 2, uint64, float64, VsrD(i), VsrD(i), 0, 0)
|
|
VSX_CVT_INT_TO_FP(xvcvsxwdp, 2, int32, float64, VsrW(2 * i), VsrD(i), 0, 0)
|
|
VSX_CVT_INT_TO_FP(xvcvuxwdp, 2, uint64, float64, VsrW(2 * i), VsrD(i), 0, 0)
|
|
VSX_CVT_INT_TO_FP(xvcvsxwsp, 4, int32, float32, VsrW(i), VsrW(i), 0, 0)
|
|
VSX_CVT_INT_TO_FP(xvcvuxwsp, 4, uint32, float32, VsrW(i), VsrW(i), 0, 0)
|
|
|
|
#define VSX_CVT_INT_TO_FP2(op, stp, ttp) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i; \
|
|
\
|
|
for (i = 0; i < 2; i++) { \
|
|
t.VsrW(2 * i) = stp##_to_##ttp(xb->VsrD(i), &env->fp_status); \
|
|
t.VsrW(2 * i + 1) = t.VsrW(2 * i); \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, false, GETPC()); \
|
|
}
|
|
|
|
VSX_CVT_INT_TO_FP2(xvcvsxdsp, int64, float32)
|
|
VSX_CVT_INT_TO_FP2(xvcvuxdsp, uint64, float32)
|
|
|
|
#define VSX_CVT_INT128_TO_FP(op, tp) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb)\
|
|
{ \
|
|
helper_reset_fpstatus(env); \
|
|
xt->f128 = tp##_to_float128(xb->s128, &env->fp_status); \
|
|
helper_compute_fprf_float128(env, xt->f128); \
|
|
do_float_check_status(env, true, GETPC()); \
|
|
}
|
|
|
|
VSX_CVT_INT128_TO_FP(XSCVUQQP, uint128);
|
|
VSX_CVT_INT128_TO_FP(XSCVSQQP, int128);
|
|
|
|
/*
|
|
* VSX_CVT_INT_TO_FP_VECTOR - VSX integer to floating point conversion
|
|
* op - instruction mnemonic
|
|
* stp - source type (int32, uint32, int64 or uint64)
|
|
* ttp - target type (float32 or float64)
|
|
* sfld - source vsr_t field
|
|
* tfld - target vsr_t field
|
|
*/
|
|
#define VSX_CVT_INT_TO_FP_VECTOR(op, stp, ttp, sfld, tfld) \
|
|
void helper_##op(CPUPPCState *env, uint32_t opcode, \
|
|
ppc_vsr_t *xt, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = *xt; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
t.tfld = stp##_to_##ttp(xb->sfld, &env->fp_status); \
|
|
helper_compute_fprf_##ttp(env, t.tfld); \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, true, GETPC()); \
|
|
}
|
|
|
|
VSX_CVT_INT_TO_FP_VECTOR(xscvsdqp, int64, float128, VsrD(0), f128)
|
|
VSX_CVT_INT_TO_FP_VECTOR(xscvudqp, uint64, float128, VsrD(0), f128)
|
|
|
|
/*
|
|
* For "use current rounding mode", define a value that will not be
|
|
* one of the existing rounding model enums.
|
|
*/
|
|
#define FLOAT_ROUND_CURRENT (float_round_nearest_even + float_round_down + \
|
|
float_round_up + float_round_to_zero)
|
|
|
|
/*
|
|
* VSX_ROUND - VSX floating point round
|
|
* op - instruction mnemonic
|
|
* nels - number of elements (1, 2 or 4)
|
|
* tp - type (float32 or float64)
|
|
* fld - vsr_t field (VsrD(*) or VsrW(*))
|
|
* rmode - rounding mode
|
|
* sfifprf - set FI and FPRF
|
|
*/
|
|
#define VSX_ROUND(op, nels, tp, fld, rmode, sfifprf) \
|
|
void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \
|
|
{ \
|
|
ppc_vsr_t t = { }; \
|
|
int i; \
|
|
FloatRoundMode curr_rounding_mode; \
|
|
\
|
|
helper_reset_fpstatus(env); \
|
|
\
|
|
if (rmode != FLOAT_ROUND_CURRENT) { \
|
|
curr_rounding_mode = get_float_rounding_mode(&env->fp_status); \
|
|
set_float_rounding_mode(rmode, &env->fp_status); \
|
|
} \
|
|
\
|
|
for (i = 0; i < nels; i++) { \
|
|
if (unlikely(tp##_is_signaling_nan(xb->fld, \
|
|
&env->fp_status))) { \
|
|
float_invalid_op_vxsnan(env, GETPC()); \
|
|
t.fld = tp##_snan_to_qnan(xb->fld); \
|
|
} else { \
|
|
t.fld = tp##_round_to_int(xb->fld, &env->fp_status); \
|
|
} \
|
|
if (sfifprf) { \
|
|
helper_compute_fprf_float64(env, t.fld); \
|
|
} \
|
|
} \
|
|
\
|
|
/* \
|
|
* If this is not a "use current rounding mode" instruction, \
|
|
* then inhibit setting of the XX bit and restore rounding \
|
|
* mode from FPSCR \
|
|
*/ \
|
|
if (rmode != FLOAT_ROUND_CURRENT) { \
|
|
set_float_rounding_mode(curr_rounding_mode, &env->fp_status); \
|
|
env->fp_status.float_exception_flags &= ~float_flag_inexact; \
|
|
} \
|
|
\
|
|
*xt = t; \
|
|
do_float_check_status(env, sfifprf, GETPC()); \
|
|
}
|
|
|
|
VSX_ROUND(xsrdpi, 1, float64, VsrD(0), float_round_ties_away, 1)
|
|
VSX_ROUND(xsrdpic, 1, float64, VsrD(0), FLOAT_ROUND_CURRENT, 1)
|
|
VSX_ROUND(xsrdpim, 1, float64, VsrD(0), float_round_down, 1)
|
|
VSX_ROUND(xsrdpip, 1, float64, VsrD(0), float_round_up, 1)
|
|
VSX_ROUND(xsrdpiz, 1, float64, VsrD(0), float_round_to_zero, 1)
|
|
|
|
VSX_ROUND(xvrdpi, 2, float64, VsrD(i), float_round_ties_away, 0)
|
|
VSX_ROUND(xvrdpic, 2, float64, VsrD(i), FLOAT_ROUND_CURRENT, 0)
|
|
VSX_ROUND(xvrdpim, 2, float64, VsrD(i), float_round_down, 0)
|
|
VSX_ROUND(xvrdpip, 2, float64, VsrD(i), float_round_up, 0)
|
|
VSX_ROUND(xvrdpiz, 2, float64, VsrD(i), float_round_to_zero, 0)
|
|
|
|
VSX_ROUND(xvrspi, 4, float32, VsrW(i), float_round_ties_away, 0)
|
|
VSX_ROUND(xvrspic, 4, float32, VsrW(i), FLOAT_ROUND_CURRENT, 0)
|
|
VSX_ROUND(xvrspim, 4, float32, VsrW(i), float_round_down, 0)
|
|
VSX_ROUND(xvrspip, 4, float32, VsrW(i), float_round_up, 0)
|
|
VSX_ROUND(xvrspiz, 4, float32, VsrW(i), float_round_to_zero, 0)
|
|
|
|
uint64_t helper_xsrsp(CPUPPCState *env, uint64_t xb)
|
|
{
|
|
helper_reset_fpstatus(env);
|
|
|
|
uint64_t xt = do_frsp(env, xb, GETPC());
|
|
|
|
helper_compute_fprf_float64(env, xt);
|
|
do_float_check_status(env, true, GETPC());
|
|
return xt;
|
|
}
|
|
|
|
void helper_XVXSIGSP(ppc_vsr_t *xt, ppc_vsr_t *xb)
|
|
{
|
|
ppc_vsr_t t = { };
|
|
uint32_t exp, i, fraction;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
exp = (xb->VsrW(i) >> 23) & 0xFF;
|
|
fraction = xb->VsrW(i) & 0x7FFFFF;
|
|
if (exp != 0 && exp != 255) {
|
|
t.VsrW(i) = fraction | 0x00800000;
|
|
} else {
|
|
t.VsrW(i) = fraction;
|
|
}
|
|
}
|
|
*xt = t;
|
|
}
|
|
|
|
#define VSX_TSTDC(tp) \
|
|
static int32_t tp##_tstdc(tp b, uint32_t dcmx) \
|
|
{ \
|
|
uint32_t match = 0; \
|
|
uint32_t sign = tp##_is_neg(b); \
|
|
if (tp##_is_any_nan(b)) { \
|
|
match = extract32(dcmx, 6, 1); \
|
|
} else if (tp##_is_infinity(b)) { \
|
|
match = extract32(dcmx, 4 + !sign, 1); \
|
|
} else if (tp##_is_zero(b)) { \
|
|
match = extract32(dcmx, 2 + !sign, 1); \
|
|
} else if (tp##_is_zero_or_denormal(b)) { \
|
|
match = extract32(dcmx, 0 + !sign, 1); \
|
|
} \
|
|
return (match != 0); \
|
|
}
|
|
|
|
VSX_TSTDC(float32)
|
|
VSX_TSTDC(float64)
|
|
VSX_TSTDC(float128)
|
|
#undef VSX_TSTDC
|
|
|
|
void helper_XVTSTDCDP(ppc_vsr_t *t, ppc_vsr_t *b, uint64_t dcmx, uint32_t v)
|
|
{
|
|
int i;
|
|
for (i = 0; i < 2; i++) {
|
|
t->s64[i] = (int64_t)-float64_tstdc(b->f64[i], dcmx);
|
|
}
|
|
}
|
|
|
|
void helper_XVTSTDCSP(ppc_vsr_t *t, ppc_vsr_t *b, uint64_t dcmx, uint32_t v)
|
|
{
|
|
int i;
|
|
for (i = 0; i < 4; i++) {
|
|
t->s32[i] = (int32_t)-float32_tstdc(b->f32[i], dcmx);
|
|
}
|
|
}
|
|
|
|
static bool not_SP_value(float64 val)
|
|
{
|
|
return val != helper_todouble(helper_tosingle(val));
|
|
}
|
|
|
|
/*
|
|
* VSX_XS_TSTDC - VSX Scalar Test Data Class
|
|
* NAME - instruction name
|
|
* FLD - vsr_t field (VsrD(0) or f128)
|
|
* TP - type (float64 or float128)
|
|
*/
|
|
#define VSX_XS_TSTDC(NAME, FLD, TP) \
|
|
void helper_##NAME(CPUPPCState *env, uint32_t bf, \
|
|
uint32_t dcmx, ppc_vsr_t *b) \
|
|
{ \
|
|
uint32_t cc, match, sign = TP##_is_neg(b->FLD); \
|
|
match = TP##_tstdc(b->FLD, dcmx); \
|
|
cc = sign << CRF_LT_BIT | match << CRF_EQ_BIT; \
|
|
env->fpscr &= ~FP_FPCC; \
|
|
env->fpscr |= cc << FPSCR_FPCC; \
|
|
env->crf[bf] = cc; \
|
|
}
|
|
|
|
VSX_XS_TSTDC(XSTSTDCDP, VsrD(0), float64)
|
|
VSX_XS_TSTDC(XSTSTDCQP, f128, float128)
|
|
#undef VSX_XS_TSTDC
|
|
|
|
void helper_XSTSTDCSP(CPUPPCState *env, uint32_t bf,
|
|
uint32_t dcmx, ppc_vsr_t *b)
|
|
{
|
|
uint32_t cc, match, sign = float64_is_neg(b->VsrD(0));
|
|
uint32_t exp = (b->VsrD(0) >> 52) & 0x7FF;
|
|
int not_sp = (int)not_SP_value(b->VsrD(0));
|
|
match = float64_tstdc(b->VsrD(0), dcmx) || (exp > 0 && exp < 0x381);
|
|
cc = sign << CRF_LT_BIT | match << CRF_EQ_BIT | not_sp << CRF_SO_BIT;
|
|
env->fpscr &= ~FP_FPCC;
|
|
env->fpscr |= cc << FPSCR_FPCC;
|
|
env->crf[bf] = cc;
|
|
}
|
|
|
|
void helper_xsrqpi(CPUPPCState *env, uint32_t opcode,
|
|
ppc_vsr_t *xt, ppc_vsr_t *xb)
|
|
{
|
|
ppc_vsr_t t = { };
|
|
uint8_t r = Rrm(opcode);
|
|
uint8_t ex = Rc(opcode);
|
|
uint8_t rmc = RMC(opcode);
|
|
uint8_t rmode = 0;
|
|
float_status tstat;
|
|
|
|
helper_reset_fpstatus(env);
|
|
|
|
if (r == 0 && rmc == 0) {
|
|
rmode = float_round_ties_away;
|
|
} else if (r == 0 && rmc == 0x3) {
|
|
rmode = env->fpscr & FP_RN;
|
|
} else if (r == 1) {
|
|
switch (rmc) {
|
|
case 0:
|
|
rmode = float_round_nearest_even;
|
|
break;
|
|
case 1:
|
|
rmode = float_round_to_zero;
|
|
break;
|
|
case 2:
|
|
rmode = float_round_up;
|
|
break;
|
|
case 3:
|
|
rmode = float_round_down;
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
|
|
tstat = env->fp_status;
|
|
set_float_exception_flags(0, &tstat);
|
|
set_float_rounding_mode(rmode, &tstat);
|
|
t.f128 = float128_round_to_int(xb->f128, &tstat);
|
|
env->fp_status.float_exception_flags |= tstat.float_exception_flags;
|
|
|
|
if (unlikely(tstat.float_exception_flags & float_flag_invalid_snan)) {
|
|
float_invalid_op_vxsnan(env, GETPC());
|
|
}
|
|
|
|
if (ex == 0 && (tstat.float_exception_flags & float_flag_inexact)) {
|
|
env->fp_status.float_exception_flags &= ~float_flag_inexact;
|
|
}
|
|
|
|
helper_compute_fprf_float128(env, t.f128);
|
|
do_float_check_status(env, true, GETPC());
|
|
*xt = t;
|
|
}
|
|
|
|
void helper_xsrqpxp(CPUPPCState *env, uint32_t opcode,
|
|
ppc_vsr_t *xt, ppc_vsr_t *xb)
|
|
{
|
|
ppc_vsr_t t = { };
|
|
uint8_t r = Rrm(opcode);
|
|
uint8_t rmc = RMC(opcode);
|
|
uint8_t rmode = 0;
|
|
floatx80 round_res;
|
|
float_status tstat;
|
|
|
|
helper_reset_fpstatus(env);
|
|
|
|
if (r == 0 && rmc == 0) {
|
|
rmode = float_round_ties_away;
|
|
} else if (r == 0 && rmc == 0x3) {
|
|
rmode = env->fpscr & FP_RN;
|
|
} else if (r == 1) {
|
|
switch (rmc) {
|
|
case 0:
|
|
rmode = float_round_nearest_even;
|
|
break;
|
|
case 1:
|
|
rmode = float_round_to_zero;
|
|
break;
|
|
case 2:
|
|
rmode = float_round_up;
|
|
break;
|
|
case 3:
|
|
rmode = float_round_down;
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
|
|
tstat = env->fp_status;
|
|
set_float_exception_flags(0, &tstat);
|
|
set_float_rounding_mode(rmode, &tstat);
|
|
round_res = float128_to_floatx80(xb->f128, &tstat);
|
|
t.f128 = floatx80_to_float128(round_res, &tstat);
|
|
env->fp_status.float_exception_flags |= tstat.float_exception_flags;
|
|
|
|
if (unlikely(tstat.float_exception_flags & float_flag_invalid_snan)) {
|
|
float_invalid_op_vxsnan(env, GETPC());
|
|
t.f128 = float128_snan_to_qnan(t.f128);
|
|
}
|
|
|
|
helper_compute_fprf_float128(env, t.f128);
|
|
*xt = t;
|
|
do_float_check_status(env, true, GETPC());
|
|
}
|
|
|
|
void helper_xssqrtqp(CPUPPCState *env, uint32_t opcode,
|
|
ppc_vsr_t *xt, ppc_vsr_t *xb)
|
|
{
|
|
ppc_vsr_t t = { };
|
|
float_status tstat;
|
|
|
|
helper_reset_fpstatus(env);
|
|
|
|
tstat = env->fp_status;
|
|
if (unlikely(Rc(opcode) != 0)) {
|
|
tstat.float_rounding_mode = float_round_to_odd;
|
|
}
|
|
|
|
set_float_exception_flags(0, &tstat);
|
|
t.f128 = float128_sqrt(xb->f128, &tstat);
|
|
env->fp_status.float_exception_flags |= tstat.float_exception_flags;
|
|
|
|
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) {
|
|
float_invalid_op_sqrt(env, tstat.float_exception_flags, 1, GETPC());
|
|
}
|
|
|
|
helper_compute_fprf_float128(env, t.f128);
|
|
*xt = t;
|
|
do_float_check_status(env, true, GETPC());
|
|
}
|
|
|
|
void helper_xssubqp(CPUPPCState *env, uint32_t opcode,
|
|
ppc_vsr_t *xt, ppc_vsr_t *xa, ppc_vsr_t *xb)
|
|
{
|
|
ppc_vsr_t t = *xt;
|
|
float_status tstat;
|
|
|
|
helper_reset_fpstatus(env);
|
|
|
|
tstat = env->fp_status;
|
|
if (unlikely(Rc(opcode) != 0)) {
|
|
tstat.float_rounding_mode = float_round_to_odd;
|
|
}
|
|
|
|
set_float_exception_flags(0, &tstat);
|
|
t.f128 = float128_sub(xa->f128, xb->f128, &tstat);
|
|
env->fp_status.float_exception_flags |= tstat.float_exception_flags;
|
|
|
|
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) {
|
|
float_invalid_op_addsub(env, tstat.float_exception_flags, 1, GETPC());
|
|
}
|
|
|
|
helper_compute_fprf_float128(env, t.f128);
|
|
*xt = t;
|
|
do_float_check_status(env, true, GETPC());
|
|
}
|
|
|
|
static inline void vsxger_excp(CPUPPCState *env, uintptr_t retaddr)
|
|
{
|
|
/*
|
|
* XV*GER instructions execute and set the FPSCR as if exceptions
|
|
* are disabled and only at the end throw an exception
|
|
*/
|
|
target_ulong enable;
|
|
enable = env->fpscr & (FP_ENABLES | FP_FI | FP_FR);
|
|
env->fpscr &= ~(FP_ENABLES | FP_FI | FP_FR);
|
|
int status = get_float_exception_flags(&env->fp_status);
|
|
if (unlikely(status & float_flag_invalid)) {
|
|
if (status & float_flag_invalid_snan) {
|
|
float_invalid_op_vxsnan(env, 0);
|
|
}
|
|
if (status & float_flag_invalid_imz) {
|
|
float_invalid_op_vximz(env, false, 0);
|
|
}
|
|
if (status & float_flag_invalid_isi) {
|
|
float_invalid_op_vxisi(env, false, 0);
|
|
}
|
|
}
|
|
do_float_check_status(env, false, retaddr);
|
|
env->fpscr |= enable;
|
|
do_fpscr_check_status(env, retaddr);
|
|
}
|
|
|
|
typedef float64 extract_f16(float16, float_status *);
|
|
|
|
static float64 extract_hf16(float16 in, float_status *fp_status)
|
|
{
|
|
return float16_to_float64(in, true, fp_status);
|
|
}
|
|
|
|
static float64 extract_bf16(bfloat16 in, float_status *fp_status)
|
|
{
|
|
return bfloat16_to_float64(in, fp_status);
|
|
}
|
|
|
|
static void vsxger16(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask, bool acc,
|
|
bool neg_mul, bool neg_acc, extract_f16 extract)
|
|
{
|
|
float32 r, aux_acc;
|
|
float64 psum, va, vb, vc, vd;
|
|
int i, j, xmsk_bit, ymsk_bit;
|
|
uint8_t pmsk = FIELD_EX32(mask, GER_MSK, PMSK),
|
|
xmsk = FIELD_EX32(mask, GER_MSK, XMSK),
|
|
ymsk = FIELD_EX32(mask, GER_MSK, YMSK);
|
|
float_status *excp_ptr = &env->fp_status;
|
|
for (i = 0, xmsk_bit = 1 << 3; i < 4; i++, xmsk_bit >>= 1) {
|
|
for (j = 0, ymsk_bit = 1 << 3; j < 4; j++, ymsk_bit >>= 1) {
|
|
if ((xmsk_bit & xmsk) && (ymsk_bit & ymsk)) {
|
|
va = !(pmsk & 2) ? float64_zero :
|
|
extract(a->VsrHF(2 * i), excp_ptr);
|
|
vb = !(pmsk & 2) ? float64_zero :
|
|
extract(b->VsrHF(2 * j), excp_ptr);
|
|
vc = !(pmsk & 1) ? float64_zero :
|
|
extract(a->VsrHF(2 * i + 1), excp_ptr);
|
|
vd = !(pmsk & 1) ? float64_zero :
|
|
extract(b->VsrHF(2 * j + 1), excp_ptr);
|
|
psum = float64_mul(va, vb, excp_ptr);
|
|
psum = float64r32_muladd(vc, vd, psum, 0, excp_ptr);
|
|
r = float64_to_float32(psum, excp_ptr);
|
|
if (acc) {
|
|
aux_acc = at[i].VsrSF(j);
|
|
if (neg_mul) {
|
|
r = bfp32_neg(r);
|
|
}
|
|
if (neg_acc) {
|
|
aux_acc = bfp32_neg(aux_acc);
|
|
}
|
|
r = float32_add(r, aux_acc, excp_ptr);
|
|
}
|
|
at[i].VsrSF(j) = r;
|
|
} else {
|
|
at[i].VsrSF(j) = float32_zero;
|
|
}
|
|
}
|
|
}
|
|
vsxger_excp(env, GETPC());
|
|
}
|
|
|
|
typedef void vsxger_zero(ppc_vsr_t *at, int, int);
|
|
|
|
typedef void vsxger_muladd_f(ppc_vsr_t *, ppc_vsr_t *, ppc_vsr_t *, int, int,
|
|
int flags, float_status *s);
|
|
|
|
static void vsxger_muladd32(ppc_vsr_t *at, ppc_vsr_t *a, ppc_vsr_t *b, int i,
|
|
int j, int flags, float_status *s)
|
|
{
|
|
at[i].VsrSF(j) = float32_muladd(a->VsrSF(i), b->VsrSF(j),
|
|
at[i].VsrSF(j), flags, s);
|
|
}
|
|
|
|
static void vsxger_mul32(ppc_vsr_t *at, ppc_vsr_t *a, ppc_vsr_t *b, int i,
|
|
int j, int flags, float_status *s)
|
|
{
|
|
at[i].VsrSF(j) = float32_mul(a->VsrSF(i), b->VsrSF(j), s);
|
|
}
|
|
|
|
static void vsxger_zero32(ppc_vsr_t *at, int i, int j)
|
|
{
|
|
at[i].VsrSF(j) = float32_zero;
|
|
}
|
|
|
|
static void vsxger_muladd64(ppc_vsr_t *at, ppc_vsr_t *a, ppc_vsr_t *b, int i,
|
|
int j, int flags, float_status *s)
|
|
{
|
|
if (j >= 2) {
|
|
j -= 2;
|
|
at[i].VsrDF(j) = float64_muladd(a[i / 2].VsrDF(i % 2), b->VsrDF(j),
|
|
at[i].VsrDF(j), flags, s);
|
|
}
|
|
}
|
|
|
|
static void vsxger_mul64(ppc_vsr_t *at, ppc_vsr_t *a, ppc_vsr_t *b, int i,
|
|
int j, int flags, float_status *s)
|
|
{
|
|
if (j >= 2) {
|
|
j -= 2;
|
|
at[i].VsrDF(j) = float64_mul(a[i / 2].VsrDF(i % 2), b->VsrDF(j), s);
|
|
}
|
|
}
|
|
|
|
static void vsxger_zero64(ppc_vsr_t *at, int i, int j)
|
|
{
|
|
if (j >= 2) {
|
|
j -= 2;
|
|
at[i].VsrDF(j) = float64_zero;
|
|
}
|
|
}
|
|
|
|
static void vsxger(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask, bool acc, bool neg_mul,
|
|
bool neg_acc, vsxger_muladd_f mul, vsxger_muladd_f muladd,
|
|
vsxger_zero zero)
|
|
{
|
|
int i, j, xmsk_bit, ymsk_bit, op_flags;
|
|
uint8_t xmsk = mask & 0x0F;
|
|
uint8_t ymsk = (mask >> 4) & 0x0F;
|
|
float_status *excp_ptr = &env->fp_status;
|
|
op_flags = (neg_acc ^ neg_mul) ? float_muladd_negate_c : 0;
|
|
op_flags |= (neg_mul) ? float_muladd_negate_result : 0;
|
|
helper_reset_fpstatus(env);
|
|
for (i = 0, xmsk_bit = 1 << 3; i < 4; i++, xmsk_bit >>= 1) {
|
|
for (j = 0, ymsk_bit = 1 << 3; j < 4; j++, ymsk_bit >>= 1) {
|
|
if ((xmsk_bit & xmsk) && (ymsk_bit & ymsk)) {
|
|
if (acc) {
|
|
muladd(at, a, b, i, j, op_flags, excp_ptr);
|
|
} else {
|
|
mul(at, a, b, i, j, op_flags, excp_ptr);
|
|
}
|
|
} else {
|
|
zero(at, i, j);
|
|
}
|
|
}
|
|
}
|
|
vsxger_excp(env, GETPC());
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVBF16GER2(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger16(env, a, b, at, mask, false, false, false, extract_bf16);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVBF16GER2PP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger16(env, a, b, at, mask, true, false, false, extract_bf16);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVBF16GER2PN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger16(env, a, b, at, mask, true, false, true, extract_bf16);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVBF16GER2NP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger16(env, a, b, at, mask, true, true, false, extract_bf16);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVBF16GER2NN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger16(env, a, b, at, mask, true, true, true, extract_bf16);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVF16GER2(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger16(env, a, b, at, mask, false, false, false, extract_hf16);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVF16GER2PP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger16(env, a, b, at, mask, true, false, false, extract_hf16);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVF16GER2PN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger16(env, a, b, at, mask, true, false, true, extract_hf16);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVF16GER2NP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger16(env, a, b, at, mask, true, true, false, extract_hf16);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVF16GER2NN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger16(env, a, b, at, mask, true, true, true, extract_hf16);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVF32GER(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger(env, a, b, at, mask, false, false, false, vsxger_mul32,
|
|
vsxger_muladd32, vsxger_zero32);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVF32GERPP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger(env, a, b, at, mask, true, false, false, vsxger_mul32,
|
|
vsxger_muladd32, vsxger_zero32);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVF32GERPN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger(env, a, b, at, mask, true, false, true, vsxger_mul32,
|
|
vsxger_muladd32, vsxger_zero32);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVF32GERNP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger(env, a, b, at, mask, true, true, false, vsxger_mul32,
|
|
vsxger_muladd32, vsxger_zero32);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVF32GERNN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger(env, a, b, at, mask, true, true, true, vsxger_mul32,
|
|
vsxger_muladd32, vsxger_zero32);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVF64GER(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger(env, a, b, at, mask, false, false, false, vsxger_mul64,
|
|
vsxger_muladd64, vsxger_zero64);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVF64GERPP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger(env, a, b, at, mask, true, false, false, vsxger_mul64,
|
|
vsxger_muladd64, vsxger_zero64);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVF64GERPN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger(env, a, b, at, mask, true, false, true, vsxger_mul64,
|
|
vsxger_muladd64, vsxger_zero64);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVF64GERNP(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger(env, a, b, at, mask, true, true, false, vsxger_mul64,
|
|
vsxger_muladd64, vsxger_zero64);
|
|
}
|
|
|
|
QEMU_FLATTEN
|
|
void helper_XVF64GERNN(CPUPPCState *env, ppc_vsr_t *a, ppc_vsr_t *b,
|
|
ppc_acc_t *at, uint32_t mask)
|
|
{
|
|
vsxger(env, a, b, at, mask, true, true, true, vsxger_mul64,
|
|
vsxger_muladd64, vsxger_zero64);
|
|
}
|