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968e76bcab
qemu/target-ppc/fpu_helper.c
Tom Musta 968e76bcab target-ppc: VSX Stage 4: add xsrsqrtesp 
This patch adds the VSX Scalar Reciprocal Square Root Estimate
Single Precision (xsrsqrtesp) instruction.

The existing VSX_RSQRTE() macro is modified to support rounding
of the intermediate double-precision result to single precision.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
2014-03-05 03:06:36 +01:00

2640 lines
103 KiB
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/*
* PowerPC floating point and SPE emulation helpers for QEMU.
*
* Copyright (c) 2003-2007 Jocelyn Mayer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "cpu.h"
#include "helper.h"
/*****************************************************************************/
/* Floating point operations helpers */
uint64_t helper_float32_to_float64(CPUPPCState *env, uint32_t arg)
{
CPU_FloatU f;
CPU_DoubleU d;
f.l = arg;
d.d = float32_to_float64(f.f, &env->fp_status);
return d.ll;
}
uint32_t helper_float64_to_float32(CPUPPCState *env, uint64_t arg)
{
CPU_FloatU f;
CPU_DoubleU d;
d.ll = arg;
f.f = float64_to_float32(d.d, &env->fp_status);
return f.l;
}
static inline int isden(float64 d)
{
CPU_DoubleU u;
u.d = d;
return ((u.ll >> 52) & 0x7FF) == 0;
}
uint32_t helper_compute_fprf(CPUPPCState *env, uint64_t arg, uint32_t set_fprf)
{
CPU_DoubleU farg;
int isneg;
int ret;
farg.ll = arg;
isneg = float64_is_neg(farg.d);
if (unlikely(float64_is_any_nan(farg.d))) {
if (float64_is_signaling_nan(farg.d)) {
/* Signaling NaN: flags are undefined */
ret = 0x00;
} else {
/* Quiet NaN */
ret = 0x11;
}
} else if (unlikely(float64_is_infinity(farg.d))) {
/* +/- infinity */
if (isneg) {
ret = 0x09;
} else {
ret = 0x05;
}
} else {
if (float64_is_zero(farg.d)) {
/* +/- zero */
if (isneg) {
ret = 0x12;
} else {
ret = 0x02;
}
} else {
if (isden(farg.d)) {
/* Denormalized numbers */
ret = 0x10;
} else {
/* Normalized numbers */
ret = 0x00;
}
if (isneg) {
ret |= 0x08;
} else {
ret |= 0x04;
}
}
}
if (set_fprf) {
/* We update FPSCR_FPRF */
env->fpscr &= ~(0x1F << FPSCR_FPRF);
env->fpscr |= ret << FPSCR_FPRF;
}
/* We just need fpcc to update Rc1 */
return ret & 0xF;
}
/* Floating-point invalid operations exception */
static inline uint64_t fload_invalid_op_excp(CPUPPCState *env, int op,
int set_fpcc)
{
uint64_t ret = 0;
int ve;
ve = fpscr_ve;
switch (op) {
case POWERPC_EXCP_FP_VXSNAN:
env->fpscr |= 1 << FPSCR_VXSNAN;
break;
case POWERPC_EXCP_FP_VXSOFT:
env->fpscr |= 1 << FPSCR_VXSOFT;
break;
case POWERPC_EXCP_FP_VXISI:
/* Magnitude subtraction of infinities */
env->fpscr |= 1 << FPSCR_VXISI;
goto update_arith;
case POWERPC_EXCP_FP_VXIDI:
/* Division of infinity by infinity */
env->fpscr |= 1 << FPSCR_VXIDI;
goto update_arith;
case POWERPC_EXCP_FP_VXZDZ:
/* Division of zero by zero */
env->fpscr |= 1 << FPSCR_VXZDZ;
goto update_arith;
case POWERPC_EXCP_FP_VXIMZ:
/* Multiplication of zero by infinity */
env->fpscr |= 1 << FPSCR_VXIMZ;
goto update_arith;
case POWERPC_EXCP_FP_VXVC:
/* Ordered comparison of NaN */
env->fpscr |= 1 << FPSCR_VXVC;
if (set_fpcc) {
env->fpscr &= ~(0xF << FPSCR_FPCC);
env->fpscr |= 0x11 << FPSCR_FPCC;
}
/* We must update the target FPR before raising the exception */
if (ve != 0) {
env->exception_index = POWERPC_EXCP_PROGRAM;
env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_VXVC;
/* Update the floating-point enabled exception summary */
env->fpscr |= 1 << FPSCR_FEX;
/* Exception is differed */
ve = 0;
}
break;
case POWERPC_EXCP_FP_VXSQRT:
/* Square root of a negative number */
env->fpscr |= 1 << FPSCR_VXSQRT;
update_arith:
env->fpscr &= ~((1 << FPSCR_FR) | (1 << FPSCR_FI));
if (ve == 0) {
/* Set the result to quiet NaN */
ret = 0x7FF8000000000000ULL;
if (set_fpcc) {
env->fpscr &= ~(0xF << FPSCR_FPCC);
env->fpscr |= 0x11 << FPSCR_FPCC;
}
}
break;
case POWERPC_EXCP_FP_VXCVI:
/* Invalid conversion */
env->fpscr |= 1 << FPSCR_VXCVI;
env->fpscr &= ~((1 << FPSCR_FR) | (1 << FPSCR_FI));
if (ve == 0) {
/* Set the result to quiet NaN */
ret = 0x7FF8000000000000ULL;
if (set_fpcc) {
env->fpscr &= ~(0xF << FPSCR_FPCC);
env->fpscr |= 0x11 << FPSCR_FPCC;
}
}
break;
}
/* Update the floating-point invalid operation summary */
env->fpscr |= 1 << FPSCR_VX;
/* Update the floating-point exception summary */
env->fpscr |= 1 << FPSCR_FX;
if (ve != 0) {
/* Update the floating-point enabled exception summary */
env->fpscr |= 1 << FPSCR_FEX;
if (msr_fe0 != 0 || msr_fe1 != 0) {
helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
POWERPC_EXCP_FP | op);
}
}
return ret;
}
static inline void float_zero_divide_excp(CPUPPCState *env)
{
env->fpscr |= 1 << FPSCR_ZX;
env->fpscr &= ~((1 << FPSCR_FR) | (1 << FPSCR_FI));
/* Update the floating-point exception summary */
env->fpscr |= 1 << FPSCR_FX;
if (fpscr_ze != 0) {
/* Update the floating-point enabled exception summary */
env->fpscr |= 1 << FPSCR_FEX;
if (msr_fe0 != 0 || msr_fe1 != 0) {
helper_raise_exception_err(env, POWERPC_EXCP_PROGRAM,
POWERPC_EXCP_FP | POWERPC_EXCP_FP_ZX);
}
}
}
static inline void float_overflow_excp(CPUPPCState *env)
{
env->fpscr |= 1 << FPSCR_OX;
/* Update the floating-point exception summary */
env->fpscr |= 1 << FPSCR_FX;
if (fpscr_oe != 0) {
/* XXX: should adjust the result */
/* Update the floating-point enabled exception summary */
env->fpscr |= 1 << FPSCR_FEX;
/* We must update the target FPR before raising the exception */
env->exception_index = POWERPC_EXCP_PROGRAM;
env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_OX;
} else {
env->fpscr |= 1 << FPSCR_XX;
env->fpscr |= 1 << FPSCR_FI;
}
}
static inline void float_underflow_excp(CPUPPCState *env)
{
env->fpscr |= 1 << FPSCR_UX;
/* Update the floating-point exception summary */
env->fpscr |= 1 << FPSCR_FX;
if (fpscr_ue != 0) {
/* XXX: should adjust the result */
/* Update the floating-point enabled exception summary */
env->fpscr |= 1 << FPSCR_FEX;
/* We must update the target FPR before raising the exception */
env->exception_index = POWERPC_EXCP_PROGRAM;
env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_UX;
}
}
static inline void float_inexact_excp(CPUPPCState *env)
{
env->fpscr |= 1 << FPSCR_XX;
/* Update the floating-point exception summary */
env->fpscr |= 1 << FPSCR_FX;
if (fpscr_xe != 0) {
/* Update the floating-point enabled exception summary */
env->fpscr |= 1 << FPSCR_FEX;
/* We must update the target FPR before raising the exception */
env->exception_index = POWERPC_EXCP_PROGRAM;
env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_XX;
}
}
static inline void fpscr_set_rounding_mode(CPUPPCState *env)
{
int rnd_type;
/* Set rounding mode */
switch (fpscr_rn) {
case 0:
/* Best approximation (round to nearest) */
rnd_type = float_round_nearest_even;
break;
case 1:
/* Smaller magnitude (round toward zero) */
rnd_type = float_round_to_zero;
break;
case 2:
/* Round toward +infinite */
rnd_type = float_round_up;
break;
default:
case 3:
/* Round toward -infinite */
rnd_type = float_round_down;
break;
}
set_float_rounding_mode(rnd_type, &env->fp_status);
}
void helper_fpscr_clrbit(CPUPPCState *env, uint32_t bit)
{
int prev;
prev = (env->fpscr >> bit) & 1;
env->fpscr &= ~(1 << bit);
if (prev == 1) {
switch (bit) {
case FPSCR_RN1:
case FPSCR_RN:
fpscr_set_rounding_mode(env);
break;
default:
break;
}
}
}
void helper_fpscr_setbit(CPUPPCState *env, uint32_t bit)
{
int prev;
prev = (env->fpscr >> bit) & 1;
env->fpscr |= 1 << bit;
if (prev == 0) {
switch (bit) {
case FPSCR_VX:
env->fpscr |= 1 << FPSCR_FX;
if (fpscr_ve) {
goto raise_ve;
}
break;
case FPSCR_OX:
env->fpscr |= 1 << FPSCR_FX;
if (fpscr_oe) {
goto raise_oe;
}
break;
case FPSCR_UX:
env->fpscr |= 1 << FPSCR_FX;
if (fpscr_ue) {
goto raise_ue;
}
break;
case FPSCR_ZX:
env->fpscr |= 1 << FPSCR_FX;
if (fpscr_ze) {
goto raise_ze;
}
break;
case FPSCR_XX:
env->fpscr |= 1 << FPSCR_FX;
if (fpscr_xe) {
goto raise_xe;
}
break;
case FPSCR_VXSNAN:
case FPSCR_VXISI:
case FPSCR_VXIDI:
case FPSCR_VXZDZ:
case FPSCR_VXIMZ:
case FPSCR_VXVC:
case FPSCR_VXSOFT:
case FPSCR_VXSQRT:
case FPSCR_VXCVI:
env->fpscr |= 1 << FPSCR_VX;
env->fpscr |= 1 << FPSCR_FX;
if (fpscr_ve != 0) {
goto raise_ve;
}
break;
case FPSCR_VE:
if (fpscr_vx != 0) {
raise_ve:
env->error_code = POWERPC_EXCP_FP;
if (fpscr_vxsnan) {
env->error_code |= POWERPC_EXCP_FP_VXSNAN;
}
if (fpscr_vxisi) {
env->error_code |= POWERPC_EXCP_FP_VXISI;
}
if (fpscr_vxidi) {
env->error_code |= POWERPC_EXCP_FP_VXIDI;
}
if (fpscr_vxzdz) {
env->error_code |= POWERPC_EXCP_FP_VXZDZ;
}
if (fpscr_vximz) {
env->error_code |= POWERPC_EXCP_FP_VXIMZ;
}
if (fpscr_vxvc) {
env->error_code |= POWERPC_EXCP_FP_VXVC;
}
if (fpscr_vxsoft) {
env->error_code |= POWERPC_EXCP_FP_VXSOFT;
}
if (fpscr_vxsqrt) {
env->error_code |= POWERPC_EXCP_FP_VXSQRT;
}
if (fpscr_vxcvi) {
env->error_code |= POWERPC_EXCP_FP_VXCVI;
}
goto raise_excp;
}
break;
case FPSCR_OE:
if (fpscr_ox != 0) {
raise_oe:
env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_OX;
goto raise_excp;
}
break;
case FPSCR_UE:
if (fpscr_ux != 0) {
raise_ue:
env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_UX;
goto raise_excp;
}
break;
case FPSCR_ZE:
if (fpscr_zx != 0) {
raise_ze:
env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_ZX;
goto raise_excp;
}
break;
case FPSCR_XE:
if (fpscr_xx != 0) {
raise_xe:
env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_XX;
goto raise_excp;
}
break;
case FPSCR_RN1:
case FPSCR_RN:
fpscr_set_rounding_mode(env);
break;
default:
break;
raise_excp:
/* Update the floating-point enabled exception summary */
env->fpscr |= 1 << FPSCR_FEX;
/* We have to update Rc1 before raising the exception */
env->exception_index = POWERPC_EXCP_PROGRAM;
break;
}
}
}
void helper_store_fpscr(CPUPPCState *env, uint64_t arg, uint32_t mask)
{
target_ulong prev, new;
int i;
prev = env->fpscr;
new = (target_ulong)arg;
new &= ~0x60000000LL;
new |= prev & 0x60000000LL;
for (i = 0; i < sizeof(target_ulong) * 2; i++) {
if (mask & (1 << i)) {
env->fpscr &= ~(0xFLL << (4 * i));
env->fpscr |= new & (0xFLL << (4 * i));
}
}
/* Update VX and FEX */
if (fpscr_ix != 0) {
env->fpscr |= 1 << FPSCR_VX;
} else {
env->fpscr &= ~(1 << FPSCR_VX);
}
if ((fpscr_ex & fpscr_eex) != 0) {
env->fpscr |= 1 << FPSCR_FEX;
env->exception_index = POWERPC_EXCP_PROGRAM;
/* XXX: we should compute it properly */
env->error_code = POWERPC_EXCP_FP;
} else {
env->fpscr &= ~(1 << FPSCR_FEX);
}
fpscr_set_rounding_mode(env);
}
void store_fpscr(CPUPPCState *env, uint64_t arg, uint32_t mask)
{
helper_store_fpscr(env, arg, mask);
}
void helper_float_check_status(CPUPPCState *env)
{
int status = get_float_exception_flags(&env->fp_status);
if (status & float_flag_divbyzero) {
float_zero_divide_excp(env);
} else if (status & float_flag_overflow) {
float_overflow_excp(env);
} else if (status & float_flag_underflow) {
float_underflow_excp(env);
} else if (status & float_flag_inexact) {
float_inexact_excp(env);
}
if (env->exception_index == POWERPC_EXCP_PROGRAM &&
(env->error_code & POWERPC_EXCP_FP)) {
/* Differred floating-point exception after target FPR update */
if (msr_fe0 != 0 || msr_fe1 != 0) {
helper_raise_exception_err(env, env->exception_index,
env->error_code);
}
}
}
void helper_reset_fpstatus(CPUPPCState *env)
{
set_float_exception_flags(0, &env->fp_status);
}
/* fadd - fadd. */
uint64_t helper_fadd(CPUPPCState *env, uint64_t arg1, uint64_t arg2)
{
CPU_DoubleU farg1, farg2;
farg1.ll = arg1;
farg2.ll = arg2;
if (unlikely(float64_is_infinity(farg1.d) && float64_is_infinity(farg2.d) &&
float64_is_neg(farg1.d) != float64_is_neg(farg2.d))) {
/* Magnitude subtraction of infinities */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, 1);
} else {
if (unlikely(float64_is_signaling_nan(farg1.d) ||
float64_is_signaling_nan(farg2.d))) {
/* sNaN addition */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
farg1.d = float64_add(farg1.d, farg2.d, &env->fp_status);
}
return farg1.ll;
}
/* fsub - fsub. */
uint64_t helper_fsub(CPUPPCState *env, uint64_t arg1, uint64_t arg2)
{
CPU_DoubleU farg1, farg2;
farg1.ll = arg1;
farg2.ll = arg2;
if (unlikely(float64_is_infinity(farg1.d) && float64_is_infinity(farg2.d) &&
float64_is_neg(farg1.d) == float64_is_neg(farg2.d))) {
/* Magnitude subtraction of infinities */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, 1);
} else {
if (unlikely(float64_is_signaling_nan(farg1.d) ||
float64_is_signaling_nan(farg2.d))) {
/* sNaN subtraction */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
farg1.d = float64_sub(farg1.d, farg2.d, &env->fp_status);
}
return farg1.ll;
}
/* fmul - fmul. */
uint64_t helper_fmul(CPUPPCState *env, uint64_t arg1, uint64_t arg2)
{
CPU_DoubleU farg1, farg2;
farg1.ll = arg1;
farg2.ll = arg2;
if (unlikely((float64_is_infinity(farg1.d) && float64_is_zero(farg2.d)) ||
(float64_is_zero(farg1.d) && float64_is_infinity(farg2.d)))) {
/* Multiplication of zero by infinity */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXIMZ, 1);
} else {
if (unlikely(float64_is_signaling_nan(farg1.d) ||
float64_is_signaling_nan(farg2.d))) {
/* sNaN multiplication */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
farg1.d = float64_mul(farg1.d, farg2.d, &env->fp_status);
}
return farg1.ll;
}
/* fdiv - fdiv. */
uint64_t helper_fdiv(CPUPPCState *env, uint64_t arg1, uint64_t arg2)
{
CPU_DoubleU farg1, farg2;
farg1.ll = arg1;
farg2.ll = arg2;
if (unlikely(float64_is_infinity(farg1.d) &&
float64_is_infinity(farg2.d))) {
/* Division of infinity by infinity */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXIDI, 1);
} else if (unlikely(float64_is_zero(farg1.d) && float64_is_zero(farg2.d))) {
/* Division of zero by zero */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXZDZ, 1);
} else {
if (unlikely(float64_is_signaling_nan(farg1.d) ||
float64_is_signaling_nan(farg2.d))) {
/* sNaN division */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
farg1.d = float64_div(farg1.d, farg2.d, &env->fp_status);
}
return farg1.ll;
}
/* fctiw - fctiw. */
uint64_t helper_fctiw(CPUPPCState *env, uint64_t arg)
{
CPU_DoubleU farg;
farg.ll = arg;
if (unlikely(float64_is_signaling_nan(farg.d))) {
/* sNaN conversion */
farg.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN |
POWERPC_EXCP_FP_VXCVI, 1);
} else if (unlikely(float64_is_quiet_nan(farg.d) ||
float64_is_infinity(farg.d))) {
/* qNan / infinity conversion */
farg.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXCVI, 1);
} else {
farg.ll = float64_to_int32(farg.d, &env->fp_status);
/* XXX: higher bits are not supposed to be significant.
* to make tests easier, return the same as a real PowerPC 750
*/
farg.ll |= 0xFFF80000ULL << 32;
}
return farg.ll;
}
/* fctiwz - fctiwz. */
uint64_t helper_fctiwz(CPUPPCState *env, uint64_t arg)
{
CPU_DoubleU farg;
farg.ll = arg;
if (unlikely(float64_is_signaling_nan(farg.d))) {
/* sNaN conversion */
farg.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN |
POWERPC_EXCP_FP_VXCVI, 1);
} else if (unlikely(float64_is_quiet_nan(farg.d) ||
float64_is_infinity(farg.d))) {
/* qNan / infinity conversion */
farg.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXCVI, 1);
} else {
farg.ll = float64_to_int32_round_to_zero(farg.d, &env->fp_status);
/* XXX: higher bits are not supposed to be significant.
* to make tests easier, return the same as a real PowerPC 750
*/
farg.ll |= 0xFFF80000ULL << 32;
}
return farg.ll;
}
#if defined(TARGET_PPC64)
/* fcfid - fcfid. */
uint64_t helper_fcfid(CPUPPCState *env, uint64_t arg)
{
CPU_DoubleU farg;
farg.d = int64_to_float64(arg, &env->fp_status);
return farg.ll;
}
/* fctid - fctid. */
uint64_t helper_fctid(CPUPPCState *env, uint64_t arg)
{
CPU_DoubleU farg;
farg.ll = arg;
if (unlikely(float64_is_signaling_nan(farg.d))) {
/* sNaN conversion */
farg.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN |
POWERPC_EXCP_FP_VXCVI, 1);
} else if (unlikely(float64_is_quiet_nan(farg.d) ||
float64_is_infinity(farg.d))) {
/* qNan / infinity conversion */
farg.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXCVI, 1);
} else {
farg.ll = float64_to_int64(farg.d, &env->fp_status);
}
return farg.ll;
}
/* fctidz - fctidz. */
uint64_t helper_fctidz(CPUPPCState *env, uint64_t arg)
{
CPU_DoubleU farg;
farg.ll = arg;
if (unlikely(float64_is_signaling_nan(farg.d))) {
/* sNaN conversion */
farg.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN |
POWERPC_EXCP_FP_VXCVI, 1);
} else if (unlikely(float64_is_quiet_nan(farg.d) ||
float64_is_infinity(farg.d))) {
/* qNan / infinity conversion */
farg.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXCVI, 1);
} else {
farg.ll = float64_to_int64_round_to_zero(farg.d, &env->fp_status);
}
return farg.ll;
}
#endif
static inline uint64_t do_fri(CPUPPCState *env, uint64_t arg,
int rounding_mode)
{
CPU_DoubleU farg;
farg.ll = arg;
if (unlikely(float64_is_signaling_nan(farg.d))) {
/* sNaN round */
farg.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN |
POWERPC_EXCP_FP_VXCVI, 1);
} else if (unlikely(float64_is_quiet_nan(farg.d) ||
float64_is_infinity(farg.d))) {
/* qNan / infinity round */
farg.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXCVI, 1);
} else {
set_float_rounding_mode(rounding_mode, &env->fp_status);
farg.ll = float64_round_to_int(farg.d, &env->fp_status);
/* Restore rounding mode from FPSCR */
fpscr_set_rounding_mode(env);
}
return farg.ll;
}
uint64_t helper_frin(CPUPPCState *env, uint64_t arg)
{
return do_fri(env, arg, float_round_nearest_even);
}
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);
}
/* fmadd - fmadd. */
uint64_t helper_fmadd(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
uint64_t arg3)
{
CPU_DoubleU farg1, farg2, farg3;
farg1.ll = arg1;
farg2.ll = arg2;
farg3.ll = arg3;
if (unlikely((float64_is_infinity(farg1.d) && float64_is_zero(farg2.d)) ||
(float64_is_zero(farg1.d) && float64_is_infinity(farg2.d)))) {
/* Multiplication of zero by infinity */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXIMZ, 1);
} else {
if (unlikely(float64_is_signaling_nan(farg1.d) ||
float64_is_signaling_nan(farg2.d) ||
float64_is_signaling_nan(farg3.d))) {
/* sNaN operation */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
/* This is the way the PowerPC specification defines it */
float128 ft0_128, ft1_128;
ft0_128 = float64_to_float128(farg1.d, &env->fp_status);
ft1_128 = float64_to_float128(farg2.d, &env->fp_status);
ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status);
if (unlikely(float128_is_infinity(ft0_128) &&
float64_is_infinity(farg3.d) &&
float128_is_neg(ft0_128) != float64_is_neg(farg3.d))) {
/* Magnitude subtraction of infinities */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, 1);
} else {
ft1_128 = float64_to_float128(farg3.d, &env->fp_status);
ft0_128 = float128_add(ft0_128, ft1_128, &env->fp_status);
farg1.d = float128_to_float64(ft0_128, &env->fp_status);
}
}
return farg1.ll;
}
/* fmsub - fmsub. */
uint64_t helper_fmsub(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
uint64_t arg3)
{
CPU_DoubleU farg1, farg2, farg3;
farg1.ll = arg1;
farg2.ll = arg2;
farg3.ll = arg3;
if (unlikely((float64_is_infinity(farg1.d) && float64_is_zero(farg2.d)) ||
(float64_is_zero(farg1.d) &&
float64_is_infinity(farg2.d)))) {
/* Multiplication of zero by infinity */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXIMZ, 1);
} else {
if (unlikely(float64_is_signaling_nan(farg1.d) ||
float64_is_signaling_nan(farg2.d) ||
float64_is_signaling_nan(farg3.d))) {
/* sNaN operation */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
/* This is the way the PowerPC specification defines it */
float128 ft0_128, ft1_128;
ft0_128 = float64_to_float128(farg1.d, &env->fp_status);
ft1_128 = float64_to_float128(farg2.d, &env->fp_status);
ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status);
if (unlikely(float128_is_infinity(ft0_128) &&
float64_is_infinity(farg3.d) &&
float128_is_neg(ft0_128) == float64_is_neg(farg3.d))) {
/* Magnitude subtraction of infinities */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, 1);
} else {
ft1_128 = float64_to_float128(farg3.d, &env->fp_status);
ft0_128 = float128_sub(ft0_128, ft1_128, &env->fp_status);
farg1.d = float128_to_float64(ft0_128, &env->fp_status);
}
}
return farg1.ll;
}
/* fnmadd - fnmadd. */
uint64_t helper_fnmadd(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
uint64_t arg3)
{
CPU_DoubleU farg1, farg2, farg3;
farg1.ll = arg1;
farg2.ll = arg2;
farg3.ll = arg3;
if (unlikely((float64_is_infinity(farg1.d) && float64_is_zero(farg2.d)) ||
(float64_is_zero(farg1.d) && float64_is_infinity(farg2.d)))) {
/* Multiplication of zero by infinity */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXIMZ, 1);
} else {
if (unlikely(float64_is_signaling_nan(farg1.d) ||
float64_is_signaling_nan(farg2.d) ||
float64_is_signaling_nan(farg3.d))) {
/* sNaN operation */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
/* This is the way the PowerPC specification defines it */
float128 ft0_128, ft1_128;
ft0_128 = float64_to_float128(farg1.d, &env->fp_status);
ft1_128 = float64_to_float128(farg2.d, &env->fp_status);
ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status);
if (unlikely(float128_is_infinity(ft0_128) &&
float64_is_infinity(farg3.d) &&
float128_is_neg(ft0_128) != float64_is_neg(farg3.d))) {
/* Magnitude subtraction of infinities */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, 1);
} else {
ft1_128 = float64_to_float128(farg3.d, &env->fp_status);
ft0_128 = float128_add(ft0_128, ft1_128, &env->fp_status);
farg1.d = float128_to_float64(ft0_128, &env->fp_status);
}
if (likely(!float64_is_any_nan(farg1.d))) {
farg1.d = float64_chs(farg1.d);
}
}
return farg1.ll;
}
/* fnmsub - fnmsub. */
uint64_t helper_fnmsub(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
uint64_t arg3)
{
CPU_DoubleU farg1, farg2, farg3;
farg1.ll = arg1;
farg2.ll = arg2;
farg3.ll = arg3;
if (unlikely((float64_is_infinity(farg1.d) && float64_is_zero(farg2.d)) ||
(float64_is_zero(farg1.d) &&
float64_is_infinity(farg2.d)))) {
/* Multiplication of zero by infinity */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXIMZ, 1);
} else {
if (unlikely(float64_is_signaling_nan(farg1.d) ||
float64_is_signaling_nan(farg2.d) ||
float64_is_signaling_nan(farg3.d))) {
/* sNaN operation */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
/* This is the way the PowerPC specification defines it */
float128 ft0_128, ft1_128;
ft0_128 = float64_to_float128(farg1.d, &env->fp_status);
ft1_128 = float64_to_float128(farg2.d, &env->fp_status);
ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status);
if (unlikely(float128_is_infinity(ft0_128) &&
float64_is_infinity(farg3.d) &&
float128_is_neg(ft0_128) == float64_is_neg(farg3.d))) {
/* Magnitude subtraction of infinities */
farg1.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, 1);
} else {
ft1_128 = float64_to_float128(farg3.d, &env->fp_status);
ft0_128 = float128_sub(ft0_128, ft1_128, &env->fp_status);
farg1.d = float128_to_float64(ft0_128, &env->fp_status);
}
if (likely(!float64_is_any_nan(farg1.d))) {
farg1.d = float64_chs(farg1.d);
}
}
return farg1.ll;
}
/* frsp - frsp. */
uint64_t helper_frsp(CPUPPCState *env, uint64_t arg)
{
CPU_DoubleU farg;
float32 f32;
farg.ll = arg;
if (unlikely(float64_is_signaling_nan(farg.d))) {
/* sNaN square root */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
f32 = float64_to_float32(farg.d, &env->fp_status);
farg.d = float32_to_float64(f32, &env->fp_status);
return farg.ll;
}
/* fsqrt - fsqrt. */
uint64_t helper_fsqrt(CPUPPCState *env, uint64_t arg)
{
CPU_DoubleU farg;
farg.ll = arg;
if (unlikely(float64_is_neg(farg.d) && !float64_is_zero(farg.d))) {
/* Square root of a negative nonzero number */
farg.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSQRT, 1);
} else {
if (unlikely(float64_is_signaling_nan(farg.d))) {
/* sNaN square root */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
farg.d = float64_sqrt(farg.d, &env->fp_status);
}
return farg.ll;
}
/* fre - fre. */
uint64_t helper_fre(CPUPPCState *env, uint64_t arg)
{
CPU_DoubleU farg;
farg.ll = arg;
if (unlikely(float64_is_signaling_nan(farg.d))) {
/* sNaN reciprocal */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
farg.d = float64_div(float64_one, farg.d, &env->fp_status);
return farg.d;
}
/* fres - fres. */
uint64_t helper_fres(CPUPPCState *env, uint64_t arg)
{
CPU_DoubleU farg;
float32 f32;
farg.ll = arg;
if (unlikely(float64_is_signaling_nan(farg.d))) {
/* sNaN reciprocal */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
farg.d = float64_div(float64_one, farg.d, &env->fp_status);
f32 = float64_to_float32(farg.d, &env->fp_status);
farg.d = float32_to_float64(f32, &env->fp_status);
return farg.ll;
}
/* frsqrte - frsqrte. */
uint64_t helper_frsqrte(CPUPPCState *env, uint64_t arg)
{
CPU_DoubleU farg;
float32 f32;
farg.ll = arg;
if (unlikely(float64_is_neg(farg.d) && !float64_is_zero(farg.d))) {
/* Reciprocal square root of a negative nonzero number */
farg.ll = fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSQRT, 1);
} else {
if (unlikely(float64_is_signaling_nan(farg.d))) {
/* sNaN reciprocal square root */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
farg.d = float64_sqrt(farg.d, &env->fp_status);
farg.d = float64_div(float64_one, farg.d, &env->fp_status);
f32 = float64_to_float32(farg.d, &env->fp_status);
farg.d = float32_to_float64(f32, &env->fp_status);
}
return farg.ll;
}
/* fsel - fsel. */
uint64_t helper_fsel(CPUPPCState *env, uint64_t arg1, uint64_t arg2,
uint64_t arg3)
{
CPU_DoubleU farg1;
farg1.ll = arg1;
if ((!float64_is_neg(farg1.d) || float64_is_zero(farg1.d)) &&
!float64_is_any_nan(farg1.d)) {
return arg2;
} else {
return arg3;
}
}
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 &= ~(0x0F << FPSCR_FPRF);
env->fpscr |= ret << FPSCR_FPRF;
env->crf[crfD] = ret;
if (unlikely(ret == 0x01UL
&& (float64_is_signaling_nan(farg1.d) ||
float64_is_signaling_nan(farg2.d)))) {
/* sNaN comparison */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
}
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 &= ~(0x0F << FPSCR_FPRF);
env->fpscr |= ret << FPSCR_FPRF;
env->crf[crfD] = ret;
if (unlikely(ret == 0x01UL)) {
if (float64_is_signaling_nan(farg1.d) ||
float64_is_signaling_nan(farg2.d)) {
/* sNaN comparison */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN |
POWERPC_EXCP_FP_VXVC, 1);
} else {
/* qNaN comparison */
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXVC, 1);
}
}
}
/* 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))) {
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))) {
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))) {
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))) {
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))) {
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))) {
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) << 2; \
}
/* 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 DECODE_SPLIT(opcode, shift1, nb1, shift2, nb2) \
(((((opcode) >> (shift1)) & ((1 << (nb1)) - 1)) << nb2) | \
(((opcode) >> (shift2)) & ((1 << (nb2)) - 1)))
#define xT(opcode) DECODE_SPLIT(opcode, 0, 1, 21, 5)
#define xA(opcode) DECODE_SPLIT(opcode, 2, 1, 16, 5)
#define xB(opcode) DECODE_SPLIT(opcode, 1, 1, 11, 5)
#define xC(opcode) DECODE_SPLIT(opcode, 3, 1, 6, 5)
#define BF(opcode) (((opcode) >> (31-8)) & 7)
typedef union _ppc_vsr_t {
uint64_t u64[2];
uint32_t u32[4];
float32 f32[4];
float64 f64[2];
} ppc_vsr_t;
static void getVSR(int n, ppc_vsr_t *vsr, CPUPPCState *env)
{
if (n < 32) {
vsr->f64[0] = env->fpr[n];
vsr->u64[1] = env->vsr[n];
} else {
vsr->u64[0] = env->avr[n-32].u64[0];
vsr->u64[1] = env->avr[n-32].u64[1];
}
}
static void putVSR(int n, ppc_vsr_t *vsr, CPUPPCState *env)
{
if (n < 32) {
env->fpr[n] = vsr->f64[0];
env->vsr[n] = vsr->u64[1];
} else {
env->avr[n-32].u64[0] = vsr->u64[0];
env->avr[n-32].u64[1] = vsr->u64[1];
}
}
#define float64_to_float64(x, env) x
/* VSX_ADD_SUB - VSX floating point add/subract
* 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 (f32 or f64)
* sfprf - set FPRF
*/
#define VSX_ADD_SUB(name, op, nels, tp, fld, sfprf, r2sp) \
void helper_##name(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xt, xa, xb; \
int i; \
\
getVSR(xA(opcode), &xa, env); \
getVSR(xB(opcode), &xb, env); \
getVSR(xT(opcode), &xt, env); \
helper_reset_fpstatus(env); \
\
for (i = 0; i < nels; i++) { \
float_status tstat = env->fp_status; \
set_float_exception_flags(0, &tstat); \
xt.fld[i] = tp##_##op(xa.fld[i], xb.fld[i], &tstat); \
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
\
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
if (tp##_is_infinity(xa.fld[i]) && tp##_is_infinity(xb.fld[i])) {\
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, sfprf); \
} else if (tp##_is_signaling_nan(xa.fld[i]) || \
tp##_is_signaling_nan(xb.fld[i])) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
} \
} \
\
if (r2sp) { \
xt.fld[i] = helper_frsp(env, xt.fld[i]); \
} \
\
if (sfprf) { \
helper_compute_fprf(env, xt.fld[i], sfprf); \
} \
} \
putVSR(xT(opcode), &xt, env); \
helper_float_check_status(env); \
}
VSX_ADD_SUB(xsadddp, add, 1, float64, f64, 1, 0)
VSX_ADD_SUB(xsaddsp, add, 1, float64, f64, 1, 1)
VSX_ADD_SUB(xvadddp, add, 2, float64, f64, 0, 0)
VSX_ADD_SUB(xvaddsp, add, 4, float32, f32, 0, 0)
VSX_ADD_SUB(xssubdp, sub, 1, float64, f64, 1, 0)
VSX_ADD_SUB(xssubsp, sub, 1, float64, f64, 1, 1)
VSX_ADD_SUB(xvsubdp, sub, 2, float64, f64, 0, 0)
VSX_ADD_SUB(xvsubsp, sub, 4, float32, f32, 0, 0)
/* 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 (f32 or f64)
* sfprf - set FPRF
*/
#define VSX_MUL(op, nels, tp, fld, sfprf, r2sp) \
void helper_##op(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xt, xa, xb; \
int i; \
\
getVSR(xA(opcode), &xa, env); \
getVSR(xB(opcode), &xb, env); \
getVSR(xT(opcode), &xt, env); \
helper_reset_fpstatus(env); \
\
for (i = 0; i < nels; i++) { \
float_status tstat = env->fp_status; \
set_float_exception_flags(0, &tstat); \
xt.fld[i] = tp##_mul(xa.fld[i], xb.fld[i], &tstat); \
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
\
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
if ((tp##_is_infinity(xa.fld[i]) && tp##_is_zero(xb.fld[i])) || \
(tp##_is_infinity(xb.fld[i]) && tp##_is_zero(xa.fld[i]))) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXIMZ, sfprf); \
} else if (tp##_is_signaling_nan(xa.fld[i]) || \
tp##_is_signaling_nan(xb.fld[i])) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
} \
} \
\
if (r2sp) { \
xt.fld[i] = helper_frsp(env, xt.fld[i]); \
} \
\
if (sfprf) { \
helper_compute_fprf(env, xt.fld[i], sfprf); \
} \
} \
\
putVSR(xT(opcode), &xt, env); \
helper_float_check_status(env); \
}
VSX_MUL(xsmuldp, 1, float64, f64, 1, 0)
VSX_MUL(xsmulsp, 1, float64, f64, 1, 1)
VSX_MUL(xvmuldp, 2, float64, f64, 0, 0)
VSX_MUL(xvmulsp, 4, float32, f32, 0, 0)
/* 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 (f32 or f64)
* sfprf - set FPRF
*/
#define VSX_DIV(op, nels, tp, fld, sfprf, r2sp) \
void helper_##op(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xt, xa, xb; \
int i; \
\
getVSR(xA(opcode), &xa, env); \
getVSR(xB(opcode), &xb, env); \
getVSR(xT(opcode), &xt, env); \
helper_reset_fpstatus(env); \
\
for (i = 0; i < nels; i++) { \
float_status tstat = env->fp_status; \
set_float_exception_flags(0, &tstat); \
xt.fld[i] = tp##_div(xa.fld[i], xb.fld[i], &tstat); \
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
\
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
if (tp##_is_infinity(xa.fld[i]) && tp##_is_infinity(xb.fld[i])) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXIDI, sfprf); \
} else if (tp##_is_zero(xa.fld[i]) && \
tp##_is_zero(xb.fld[i])) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXZDZ, sfprf); \
} else if (tp##_is_signaling_nan(xa.fld[i]) || \
tp##_is_signaling_nan(xb.fld[i])) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
} \
} \
\
if (r2sp) { \
xt.fld[i] = helper_frsp(env, xt.fld[i]); \
} \
\
if (sfprf) { \
helper_compute_fprf(env, xt.fld[i], sfprf); \
} \
} \
\
putVSR(xT(opcode), &xt, env); \
helper_float_check_status(env); \
}
VSX_DIV(xsdivdp, 1, float64, f64, 1, 0)
VSX_DIV(xsdivsp, 1, float64, f64, 1, 1)
VSX_DIV(xvdivdp, 2, float64, f64, 0, 0)
VSX_DIV(xvdivsp, 4, float32, f32, 0, 0)
/* 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 (f32 or f64)
* sfprf - set FPRF
*/
#define VSX_RE(op, nels, tp, fld, sfprf, r2sp) \
void helper_##op(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xt, xb; \
int i; \
\
getVSR(xB(opcode), &xb, env); \
getVSR(xT(opcode), &xt, env); \
helper_reset_fpstatus(env); \
\
for (i = 0; i < nels; i++) { \
if (unlikely(tp##_is_signaling_nan(xb.fld[i]))) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
} \
xt.fld[i] = tp##_div(tp##_one, xb.fld[i], &env->fp_status); \
\
if (r2sp) { \
xt.fld[i] = helper_frsp(env, xt.fld[i]); \
} \
\
if (sfprf) { \
helper_compute_fprf(env, xt.fld[0], sfprf); \
} \
} \
\
putVSR(xT(opcode), &xt, env); \
helper_float_check_status(env); \
}
VSX_RE(xsredp, 1, float64, f64, 1, 0)
VSX_RE(xsresp, 1, float64, f64, 1, 1)
VSX_RE(xvredp, 2, float64, f64, 0, 0)
VSX_RE(xvresp, 4, float32, f32, 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 (f32 or f64)
* sfprf - set FPRF
*/
#define VSX_SQRT(op, nels, tp, fld, sfprf, r2sp) \
void helper_##op(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xt, xb; \
int i; \
\
getVSR(xB(opcode), &xb, env); \
getVSR(xT(opcode), &xt, env); \
helper_reset_fpstatus(env); \
\
for (i = 0; i < nels; i++) { \
float_status tstat = env->fp_status; \
set_float_exception_flags(0, &tstat); \
xt.fld[i] = tp##_sqrt(xb.fld[i], &tstat); \
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
\
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
if (tp##_is_neg(xb.fld[i]) && !tp##_is_zero(xb.fld[i])) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSQRT, sfprf); \
} else if (tp##_is_signaling_nan(xb.fld[i])) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
} \
} \
\
if (r2sp) { \
xt.fld[i] = helper_frsp(env, xt.fld[i]); \
} \
\
if (sfprf) { \
helper_compute_fprf(env, xt.fld[i], sfprf); \
} \
} \
\
putVSR(xT(opcode), &xt, env); \
helper_float_check_status(env); \
}
VSX_SQRT(xssqrtdp, 1, float64, f64, 1, 0)
VSX_SQRT(xssqrtsp, 1, float64, f64, 1, 1)
VSX_SQRT(xvsqrtdp, 2, float64, f64, 0, 0)
VSX_SQRT(xvsqrtsp, 4, float32, f32, 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 (f32 or f64)
* sfprf - set FPRF
*/
#define VSX_RSQRTE(op, nels, tp, fld, sfprf, r2sp) \
void helper_##op(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xt, xb; \
int i; \
\
getVSR(xB(opcode), &xb, env); \
getVSR(xT(opcode), &xt, env); \
helper_reset_fpstatus(env); \
\
for (i = 0; i < nels; i++) { \
float_status tstat = env->fp_status; \
set_float_exception_flags(0, &tstat); \
xt.fld[i] = tp##_sqrt(xb.fld[i], &tstat); \
xt.fld[i] = tp##_div(tp##_one, xt.fld[i], &tstat); \
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
\
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
if (tp##_is_neg(xb.fld[i]) && !tp##_is_zero(xb.fld[i])) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSQRT, sfprf); \
} else if (tp##_is_signaling_nan(xb.fld[i])) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
} \
} \
\
if (r2sp) { \
xt.fld[i] = helper_frsp(env, xt.fld[i]); \
} \
\
if (sfprf) { \
helper_compute_fprf(env, xt.fld[i], sfprf); \
} \
} \
\
putVSR(xT(opcode), &xt, env); \
helper_float_check_status(env); \
}
VSX_RSQRTE(xsrsqrtedp, 1, float64, f64, 1, 0)
VSX_RSQRTE(xsrsqrtesp, 1, float64, f64, 1, 1)
VSX_RSQRTE(xvrsqrtedp, 2, float64, f64, 0, 0)
VSX_RSQRTE(xvrsqrtesp, 4, float32, f32, 0, 0)
static inline int ppc_float32_get_unbiased_exp(float32 f)
{
return ((f >> 23) & 0xFF) - 127;
}
static inline int ppc_float64_get_unbiased_exp(float64 f)
{
return ((f >> 52) & 0x7FF) - 1023;
}
/* 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 (f32 or f64)
* 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, xb; \
int i; \
int fe_flag = 0; \
int fg_flag = 0; \
\
getVSR(xA(opcode), &xa, env); \
getVSR(xB(opcode), &xb, env); \
\
for (i = 0; i < nels; i++) { \
if (unlikely(tp##_is_infinity(xa.fld[i]) || \
tp##_is_infinity(xb.fld[i]) || \
tp##_is_zero(xb.fld[i]))) { \
fe_flag = 1; \
fg_flag = 1; \
} else { \
int e_a = ppc_##tp##_get_unbiased_exp(xa.fld[i]); \
int e_b = ppc_##tp##_get_unbiased_exp(xb.fld[i]); \
\
if (unlikely(tp##_is_any_nan(xa.fld[i]) || \
tp##_is_any_nan(xb.fld[i]))) { \
fe_flag = 1; \
} else if ((e_b <= emin) || (e_b >= (emax-2))) { \
fe_flag = 1; \
} else if (!tp##_is_zero(xa.fld[i]) && \
(((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[i]))) { \
/* 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, f64, -1022, 1023, 52)
VSX_TDIV(xvtdivdp, 2, float64, f64, -1022, 1023, 52)
VSX_TDIV(xvtdivsp, 4, float32, f32, -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 (f32 or f64)
* 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 xa, xb; \
int i; \
int fe_flag = 0; \
int fg_flag = 0; \
\
getVSR(xA(opcode), &xa, env); \
getVSR(xB(opcode), &xb, env); \
\
for (i = 0; i < nels; i++) { \
if (unlikely(tp##_is_infinity(xb.fld[i]) || \
tp##_is_zero(xb.fld[i]))) { \
fe_flag = 1; \
fg_flag = 1; \
} else { \
int e_b = ppc_##tp##_get_unbiased_exp(xb.fld[i]); \
\
if (unlikely(tp##_is_any_nan(xb.fld[i]))) { \
fe_flag = 1; \
} else if (unlikely(tp##_is_zero(xb.fld[i]))) { \
fe_flag = 1; \
} else if (unlikely(tp##_is_neg(xb.fld[i]))) { \
fe_flag = 1; \
} else if (!tp##_is_zero(xb.fld[i]) && \
(e_b <= (emin+nbits))) { \
fe_flag = 1; \
} \
\
if (unlikely(tp##_is_zero_or_denormal(xb.fld[i]))) { \
/* 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, f64, -1022, 52)
VSX_TSQRT(xvtsqrtdp, 2, float64, f64, -1022, 52)
VSX_TSQRT(xvtsqrtsp, 4, float32, f32, -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 (f32 or f64)
* maddflgs - flags for the float*muladd routine that control the
* various forms (madd, msub, nmadd, nmsub)
* afrm - A form (1=A, 0=M)
* sfprf - set FPRF
*/
#define VSX_MADD(op, nels, tp, fld, maddflgs, afrm, sfprf) \
void helper_##op(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xt_in, xa, xb, xt_out; \
ppc_vsr_t *b, *c; \
int i; \
\
if (afrm) { /* AxB + T */ \
b = &xb; \
c = &xt_in; \
} else { /* AxT + B */ \
b = &xt_in; \
c = &xb; \
} \
\
getVSR(xA(opcode), &xa, env); \
getVSR(xB(opcode), &xb, env); \
getVSR(xT(opcode), &xt_in, env); \
\
xt_out = xt_in; \
\
helper_reset_fpstatus(env); \
\
for (i = 0; i < nels; i++) { \
float_status tstat = env->fp_status; \
set_float_exception_flags(0, &tstat); \
xt_out.fld[i] = tp##_muladd(xa.fld[i], b->fld[i], c->fld[i], \
maddflgs, &tstat); \
env->fp_status.float_exception_flags |= tstat.float_exception_flags; \
\
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \
if (tp##_is_signaling_nan(xa.fld[i]) || \
tp##_is_signaling_nan(b->fld[i]) || \
tp##_is_signaling_nan(c->fld[i])) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \
tstat.float_exception_flags &= ~float_flag_invalid; \
} \
if ((tp##_is_infinity(xa.fld[i]) && tp##_is_zero(b->fld[i])) || \
(tp##_is_zero(xa.fld[i]) && tp##_is_infinity(b->fld[i]))) { \
xt_out.fld[i] = float64_to_##tp(fload_invalid_op_excp(env, \
POWERPC_EXCP_FP_VXIMZ, sfprf), &env->fp_status); \
tstat.float_exception_flags &= ~float_flag_invalid; \
} \
if ((tstat.float_exception_flags & float_flag_invalid) && \
((tp##_is_infinity(xa.fld[i]) || \
tp##_is_infinity(b->fld[i])) && \
tp##_is_infinity(c->fld[i]))) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXISI, sfprf); \
} \
} \
if (sfprf) { \
helper_compute_fprf(env, xt_out.fld[i], sfprf); \
} \
} \
putVSR(xT(opcode), &xt_out, env); \
helper_float_check_status(env); \
}
#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)
VSX_MADD(xsmaddadp, 1, float64, f64, MADD_FLGS, 1, 1)
VSX_MADD(xsmaddmdp, 1, float64, f64, MADD_FLGS, 0, 1)
VSX_MADD(xsmsubadp, 1, float64, f64, MSUB_FLGS, 1, 1)
VSX_MADD(xsmsubmdp, 1, float64, f64, MSUB_FLGS, 0, 1)
VSX_MADD(xsnmaddadp, 1, float64, f64, NMADD_FLGS, 1, 1)
VSX_MADD(xsnmaddmdp, 1, float64, f64, NMADD_FLGS, 0, 1)
VSX_MADD(xsnmsubadp, 1, float64, f64, NMSUB_FLGS, 1, 1)
VSX_MADD(xsnmsubmdp, 1, float64, f64, NMSUB_FLGS, 0, 1)
VSX_MADD(xvmaddadp, 2, float64, f64, MADD_FLGS, 1, 0)
VSX_MADD(xvmaddmdp, 2, float64, f64, MADD_FLGS, 0, 0)
VSX_MADD(xvmsubadp, 2, float64, f64, MSUB_FLGS, 1, 0)
VSX_MADD(xvmsubmdp, 2, float64, f64, MSUB_FLGS, 0, 0)
VSX_MADD(xvnmaddadp, 2, float64, f64, NMADD_FLGS, 1, 0)
VSX_MADD(xvnmaddmdp, 2, float64, f64, NMADD_FLGS, 0, 0)
VSX_MADD(xvnmsubadp, 2, float64, f64, NMSUB_FLGS, 1, 0)
VSX_MADD(xvnmsubmdp, 2, float64, f64, NMSUB_FLGS, 0, 0)
VSX_MADD(xvmaddasp, 4, float32, f32, MADD_FLGS, 1, 0)
VSX_MADD(xvmaddmsp, 4, float32, f32, MADD_FLGS, 0, 0)
VSX_MADD(xvmsubasp, 4, float32, f32, MSUB_FLGS, 1, 0)
VSX_MADD(xvmsubmsp, 4, float32, f32, MSUB_FLGS, 0, 0)
VSX_MADD(xvnmaddasp, 4, float32, f32, NMADD_FLGS, 1, 0)
VSX_MADD(xvnmaddmsp, 4, float32, f32, NMADD_FLGS, 0, 0)
VSX_MADD(xvnmsubasp, 4, float32, f32, NMSUB_FLGS, 1, 0)
VSX_MADD(xvnmsubmsp, 4, float32, f32, NMSUB_FLGS, 0, 0)
#define VSX_SCALAR_CMP(op, ordered) \
void helper_##op(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xa, xb; \
uint32_t cc = 0; \
\
getVSR(xA(opcode), &xa, env); \
getVSR(xB(opcode), &xb, env); \
\
if (unlikely(float64_is_any_nan(xa.f64[0]) || \
float64_is_any_nan(xb.f64[0]))) { \
if (float64_is_signaling_nan(xa.f64[0]) || \
float64_is_signaling_nan(xb.f64[0])) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 0); \
} \
if (ordered) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXVC, 0); \
} \
cc = 1; \
} else { \
if (float64_lt(xa.f64[0], xb.f64[0], &env->fp_status)) { \
cc = 8; \
} else if (!float64_le(xa.f64[0], xb.f64[0], &env->fp_status)) { \
cc = 4; \
} else { \
cc = 2; \
} \
} \
\
env->fpscr &= ~(0x0F << FPSCR_FPRF); \
env->fpscr |= cc << FPSCR_FPRF; \
env->crf[BF(opcode)] = cc; \
\
helper_float_check_status(env); \
}
VSX_SCALAR_CMP(xscmpodp, 1)
VSX_SCALAR_CMP(xscmpudp, 0)
#define float64_snan_to_qnan(x) ((x) | 0x0008000000000000ul)
#define float32_snan_to_qnan(x) ((x) | 0x00400000)
/* 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 (f32 or f64)
*/
#define VSX_MAX_MIN(name, op, nels, tp, fld) \
void helper_##name(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xt, xa, xb; \
int i; \
\
getVSR(xA(opcode), &xa, env); \
getVSR(xB(opcode), &xb, env); \
getVSR(xT(opcode), &xt, env); \
\
for (i = 0; i < nels; i++) { \
xt.fld[i] = tp##_##op(xa.fld[i], xb.fld[i], &env->fp_status); \
if (unlikely(tp##_is_signaling_nan(xa.fld[i]) || \
tp##_is_signaling_nan(xb.fld[i]))) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 0); \
} \
} \
\
putVSR(xT(opcode), &xt, env); \
helper_float_check_status(env); \
}
VSX_MAX_MIN(xsmaxdp, maxnum, 1, float64, f64)
VSX_MAX_MIN(xvmaxdp, maxnum, 2, float64, f64)
VSX_MAX_MIN(xvmaxsp, maxnum, 4, float32, f32)
VSX_MAX_MIN(xsmindp, minnum, 1, float64, f64)
VSX_MAX_MIN(xvmindp, minnum, 2, float64, f64)
VSX_MAX_MIN(xvminsp, minnum, 4, float32, f32)
/* 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 (f32 or f64)
* cmp - comparison operation
* svxvc - set VXVC bit
*/
#define VSX_CMP(op, nels, tp, fld, cmp, svxvc) \
void helper_##op(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xt, xa, xb; \
int i; \
int all_true = 1; \
int all_false = 1; \
\
getVSR(xA(opcode), &xa, env); \
getVSR(xB(opcode), &xb, env); \
getVSR(xT(opcode), &xt, env); \
\
for (i = 0; i < nels; i++) { \
if (unlikely(tp##_is_any_nan(xa.fld[i]) || \
tp##_is_any_nan(xb.fld[i]))) { \
if (tp##_is_signaling_nan(xa.fld[i]) || \
tp##_is_signaling_nan(xb.fld[i])) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 0); \
} \
if (svxvc) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXVC, 0); \
} \
xt.fld[i] = 0; \
all_true = 0; \
} else { \
if (tp##_##cmp(xb.fld[i], xa.fld[i], &env->fp_status) == 1) { \
xt.fld[i] = -1; \
all_false = 0; \
} else { \
xt.fld[i] = 0; \
all_true = 0; \
} \
} \
} \
\
putVSR(xT(opcode), &xt, env); \
if ((opcode >> (31-21)) & 1) { \
env->crf[6] = (all_true ? 0x8 : 0) | (all_false ? 0x2 : 0); \
} \
helper_float_check_status(env); \
}
VSX_CMP(xvcmpeqdp, 2, float64, f64, eq, 0)
VSX_CMP(xvcmpgedp, 2, float64, f64, le, 1)
VSX_CMP(xvcmpgtdp, 2, float64, f64, lt, 1)
VSX_CMP(xvcmpeqsp, 4, float32, f32, eq, 0)
VSX_CMP(xvcmpgesp, 4, float32, f32, le, 1)
VSX_CMP(xvcmpgtsp, 4, float32, f32, lt, 1)
#if defined(HOST_WORDS_BIGENDIAN)
#define JOFFSET 0
#else
#define JOFFSET 1
#endif
/* 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)
* sfprf - set FPRF
*/
#define VSX_CVT_FP_TO_FP(op, nels, stp, ttp, sfld, tfld, sfprf) \
void helper_##op(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xt, xb; \
int i; \
\
getVSR(xB(opcode), &xb, env); \
getVSR(xT(opcode), &xt, env); \
\
for (i = 0; i < nels; i++) { \
int j = 2*i + JOFFSET; \
xt.tfld = stp##_to_##ttp(xb.sfld, &env->fp_status); \
if (unlikely(stp##_is_signaling_nan(xb.sfld))) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 0); \
xt.tfld = ttp##_snan_to_qnan(xt.tfld); \
} \
if (sfprf) { \
helper_compute_fprf(env, ttp##_to_float64(xt.tfld, \
&env->fp_status), sfprf); \
} \
} \
\
putVSR(xT(opcode), &xt, env); \
helper_float_check_status(env); \
}
VSX_CVT_FP_TO_FP(xscvdpsp, 1, float64, float32, f64[i], f32[j], 1)
VSX_CVT_FP_TO_FP(xscvspdp, 1, float32, float64, f32[j], f64[i], 1)
VSX_CVT_FP_TO_FP(xvcvdpsp, 2, float64, float32, f64[i], f32[j], 0)
VSX_CVT_FP_TO_FP(xvcvspdp, 2, float32, float64, f32[j], f64[i], 0)
/* 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
* jdef - definition of the j index (i or 2*i)
* rnan - resulting NaN
*/
#define VSX_CVT_FP_TO_INT(op, nels, stp, ttp, sfld, tfld, jdef, rnan) \
void helper_##op(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xt, xb; \
int i; \
\
getVSR(xB(opcode), &xb, env); \
getVSR(xT(opcode), &xt, env); \
\
for (i = 0; i < nels; i++) { \
int j = jdef; \
if (unlikely(stp##_is_any_nan(xb.sfld))) { \
if (stp##_is_signaling_nan(xb.sfld)) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 0); \
} \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXCVI, 0); \
xt.tfld = rnan; \
} else { \
xt.tfld = stp##_to_##ttp(xb.sfld, &env->fp_status); \
if (env->fp_status.float_exception_flags & float_flag_invalid) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXCVI, 0); \
} \
} \
} \
\
putVSR(xT(opcode), &xt, env); \
helper_float_check_status(env); \
}
VSX_CVT_FP_TO_INT(xscvdpsxds, 1, float64, int64, f64[j], u64[i], i, \
0x8000000000000000ul)
VSX_CVT_FP_TO_INT(xscvdpsxws, 1, float64, int32, f64[i], u32[j], \
2*i + JOFFSET, 0x80000000l)
VSX_CVT_FP_TO_INT(xscvdpuxds, 1, float64, uint64, f64[j], u64[i], i, 0ul)
VSX_CVT_FP_TO_INT(xscvdpuxws, 1, float64, uint32, f64[i], u32[j], \
2*i + JOFFSET, 0)
VSX_CVT_FP_TO_INT(xvcvdpsxds, 2, float64, int64, f64[j], u64[i], i, \
0x8000000000000000ul)
VSX_CVT_FP_TO_INT(xvcvdpsxws, 2, float64, int32, f64[i], u32[j], \
2*i + JOFFSET, 0x80000000l)
VSX_CVT_FP_TO_INT(xvcvdpuxds, 2, float64, uint64, f64[j], u64[i], i, 0ul)
VSX_CVT_FP_TO_INT(xvcvdpuxws, 2, float64, uint32, f64[i], u32[j], \
2*i + JOFFSET, 0)
VSX_CVT_FP_TO_INT(xvcvspsxds, 2, float32, int64, f32[j], u64[i], \
2*i + JOFFSET, 0x8000000000000000ul)
VSX_CVT_FP_TO_INT(xvcvspsxws, 4, float32, int32, f32[j], u32[j], i, \
0x80000000l)
VSX_CVT_FP_TO_INT(xvcvspuxds, 2, float32, uint64, f32[j], u64[i], \
2*i + JOFFSET, 0ul)
VSX_CVT_FP_TO_INT(xvcvspuxws, 4, float32, uint32, f32[j], u32[i], i, 0)
/* 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)
* sfprf - set FPRF
*/
#define VSX_CVT_INT_TO_FP(op, nels, stp, ttp, sfld, tfld, jdef, sfprf) \
void helper_##op(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xt, xb; \
int i; \
\
getVSR(xB(opcode), &xb, env); \
getVSR(xT(opcode), &xt, env); \
\
for (i = 0; i < nels; i++) { \
int j = jdef; \
xt.tfld = stp##_to_##ttp(xb.sfld, &env->fp_status); \
if (sfprf) { \
helper_compute_fprf(env, xt.tfld, sfprf); \
} \
} \
\
putVSR(xT(opcode), &xt, env); \
helper_float_check_status(env); \
}
VSX_CVT_INT_TO_FP(xscvsxddp, 1, int64, float64, u64[j], f64[i], i, 1)
VSX_CVT_INT_TO_FP(xscvuxddp, 1, uint64, float64, u64[j], f64[i], i, 1)
VSX_CVT_INT_TO_FP(xvcvsxddp, 2, int64, float64, u64[j], f64[i], i, 0)
VSX_CVT_INT_TO_FP(xvcvuxddp, 2, uint64, float64, u64[j], f64[i], i, 0)
VSX_CVT_INT_TO_FP(xvcvsxwdp, 2, int32, float64, u32[j], f64[i], \
2*i + JOFFSET, 0)
VSX_CVT_INT_TO_FP(xvcvuxwdp, 2, uint64, float64, u32[j], f64[i], \
2*i + JOFFSET, 0)
VSX_CVT_INT_TO_FP(xvcvsxdsp, 2, int64, float32, u64[i], f32[j], \
2*i + JOFFSET, 0)
VSX_CVT_INT_TO_FP(xvcvuxdsp, 2, uint64, float32, u64[i], f32[j], \
2*i + JOFFSET, 0)
VSX_CVT_INT_TO_FP(xvcvsxwsp, 4, int32, float32, u32[j], f32[i], i, 0)
VSX_CVT_INT_TO_FP(xvcvuxwsp, 4, uint32, float32, u32[j], f32[i], i, 0)
/* 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 (f32 or f64)
* rmode - rounding mode
* sfprf - set FPRF
*/
#define VSX_ROUND(op, nels, tp, fld, rmode, sfprf) \
void helper_##op(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xt, xb; \
int i; \
getVSR(xB(opcode), &xb, env); \
getVSR(xT(opcode), &xt, env); \
\
if (rmode != FLOAT_ROUND_CURRENT) { \
set_float_rounding_mode(rmode, &env->fp_status); \
} \
\
for (i = 0; i < nels; i++) { \
if (unlikely(tp##_is_signaling_nan(xb.fld[i]))) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 0); \
xt.fld[i] = tp##_snan_to_qnan(xb.fld[i]); \
} else { \
xt.fld[i] = tp##_round_to_int(xb.fld[i], &env->fp_status); \
} \
if (sfprf) { \
helper_compute_fprf(env, xt.fld[i], sfprf); \
} \
} \
\
/* 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) { \
fpscr_set_rounding_mode(env); \
env->fp_status.float_exception_flags &= ~float_flag_inexact; \
} \
\
putVSR(xT(opcode), &xt, env); \
helper_float_check_status(env); \
}
VSX_ROUND(xsrdpi, 1, float64, f64, float_round_nearest_even, 1)
VSX_ROUND(xsrdpic, 1, float64, f64, FLOAT_ROUND_CURRENT, 1)
VSX_ROUND(xsrdpim, 1, float64, f64, float_round_down, 1)
VSX_ROUND(xsrdpip, 1, float64, f64, float_round_up, 1)
VSX_ROUND(xsrdpiz, 1, float64, f64, float_round_to_zero, 1)
VSX_ROUND(xvrdpi, 2, float64, f64, float_round_nearest_even, 0)
VSX_ROUND(xvrdpic, 2, float64, f64, FLOAT_ROUND_CURRENT, 0)
VSX_ROUND(xvrdpim, 2, float64, f64, float_round_down, 0)
VSX_ROUND(xvrdpip, 2, float64, f64, float_round_up, 0)
VSX_ROUND(xvrdpiz, 2, float64, f64, float_round_to_zero, 0)
VSX_ROUND(xvrspi, 4, float32, f32, float_round_nearest_even, 0)
VSX_ROUND(xvrspic, 4, float32, f32, FLOAT_ROUND_CURRENT, 0)
VSX_ROUND(xvrspim, 4, float32, f32, float_round_down, 0)
VSX_ROUND(xvrspip, 4, float32, f32, float_round_up, 0)
VSX_ROUND(xvrspiz, 4, float32, f32, float_round_to_zero, 0)
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