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qemu-patch-raspberry4/target-ppc/op_helper.c
aurel32 5567025f53 mtfsf: fix FPSCR_VX and FPSCR_FEX computation 
The patch below fixes the computation of FPSCR_VX and FPSCR_FEX when
using the mtfsf instruction. As stated in the PowerPC manual the mtfsf
instruction can't alter those bit, and thus it should always be
computed.

Acked by Jocelyn Mayer.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4034 c046a42c-6fe2-441c-8c8c-71466251a162
2008-03-10 00:09:28 +00:00

3131 lines
76 KiB
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/*
* PowerPC 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "exec.h"
#include "host-utils.h"
#include "helper_regs.h"
#include "op_helper.h"
#define MEMSUFFIX _raw
#include "op_helper.h"
#include "op_helper_mem.h"
#if !defined(CONFIG_USER_ONLY)
#define MEMSUFFIX _user
#include "op_helper.h"
#include "op_helper_mem.h"
#define MEMSUFFIX _kernel
#include "op_helper.h"
#include "op_helper_mem.h"
#define MEMSUFFIX _hypv
#include "op_helper.h"
#include "op_helper_mem.h"
#endif
//#define DEBUG_OP
//#define DEBUG_EXCEPTIONS
//#define DEBUG_SOFTWARE_TLB
/*****************************************************************************/
/* Exceptions processing helpers */
void do_raise_exception_err (uint32_t exception, int error_code)
{
#if 0
printf("Raise exception %3x code : %d\n", exception, error_code);
#endif
env->exception_index = exception;
env->error_code = error_code;
cpu_loop_exit();
}
void do_raise_exception (uint32_t exception)
{
do_raise_exception_err(exception, 0);
}
void cpu_dump_EA (target_ulong EA);
void do_print_mem_EA (target_ulong EA)
{
cpu_dump_EA(EA);
}
/*****************************************************************************/
/* Registers load and stores */
void do_load_cr (void)
{
T0 = (env->crf[0] << 28) |
(env->crf[1] << 24) |
(env->crf[2] << 20) |
(env->crf[3] << 16) |
(env->crf[4] << 12) |
(env->crf[5] << 8) |
(env->crf[6] << 4) |
(env->crf[7] << 0);
}
void do_store_cr (uint32_t mask)
{
int i, sh;
for (i = 0, sh = 7; i < 8; i++, sh--) {
if (mask & (1 << sh))
env->crf[i] = (T0 >> (sh * 4)) & 0xFUL;
}
}
#if defined(TARGET_PPC64)
void do_store_pri (int prio)
{
env->spr[SPR_PPR] &= ~0x001C000000000000ULL;
env->spr[SPR_PPR] |= ((uint64_t)prio & 0x7) << 50;
}
#endif
target_ulong ppc_load_dump_spr (int sprn)
{
if (loglevel != 0) {
fprintf(logfile, "Read SPR %d %03x => " ADDRX "\n",
sprn, sprn, env->spr[sprn]);
}
return env->spr[sprn];
}
void ppc_store_dump_spr (int sprn, target_ulong val)
{
if (loglevel != 0) {
fprintf(logfile, "Write SPR %d %03x => " ADDRX " <= " ADDRX "\n",
sprn, sprn, env->spr[sprn], val);
}
env->spr[sprn] = val;
}
/*****************************************************************************/
/* Fixed point operations helpers */
void do_adde (void)
{
T2 = T0;
T0 += T1 + xer_ca;
if (likely(!((uint32_t)T0 < (uint32_t)T2 ||
(xer_ca == 1 && (uint32_t)T0 == (uint32_t)T2)))) {
xer_ca = 0;
} else {
xer_ca = 1;
}
}
#if defined(TARGET_PPC64)
void do_adde_64 (void)
{
T2 = T0;
T0 += T1 + xer_ca;
if (likely(!((uint64_t)T0 < (uint64_t)T2 ||
(xer_ca == 1 && (uint64_t)T0 == (uint64_t)T2)))) {
xer_ca = 0;
} else {
xer_ca = 1;
}
}
#endif
void do_addmeo (void)
{
T1 = T0;
T0 += xer_ca + (-1);
xer_ov = ((uint32_t)T1 & ((uint32_t)T1 ^ (uint32_t)T0)) >> 31;
xer_so |= xer_ov;
if (likely(T1 != 0))
xer_ca = 1;
else
xer_ca = 0;
}
#if defined(TARGET_PPC64)
void do_addmeo_64 (void)
{
T1 = T0;
T0 += xer_ca + (-1);
xer_ov = ((uint64_t)T1 & ((uint64_t)T1 ^ (uint64_t)T0)) >> 63;
xer_so |= xer_ov;
if (likely(T1 != 0))
xer_ca = 1;
else
xer_ca = 0;
}
#endif
void do_divwo (void)
{
if (likely(!(((int32_t)T0 == INT32_MIN && (int32_t)T1 == (int32_t)-1) ||
(int32_t)T1 == 0))) {
xer_ov = 0;
T0 = (int32_t)T0 / (int32_t)T1;
} else {
xer_ov = 1;
T0 = UINT32_MAX * ((uint32_t)T0 >> 31);
}
xer_so |= xer_ov;
}
#if defined(TARGET_PPC64)
void do_divdo (void)
{
if (likely(!(((int64_t)T0 == INT64_MIN && (int64_t)T1 == (int64_t)-1LL) ||
(int64_t)T1 == 0))) {
xer_ov = 0;
T0 = (int64_t)T0 / (int64_t)T1;
} else {
xer_ov = 1;
T0 = UINT64_MAX * ((uint64_t)T0 >> 63);
}
xer_so |= xer_ov;
}
#endif
void do_divwuo (void)
{
if (likely((uint32_t)T1 != 0)) {
xer_ov = 0;
T0 = (uint32_t)T0 / (uint32_t)T1;
} else {
xer_ov = 1;
xer_so = 1;
T0 = 0;
}
}
#if defined(TARGET_PPC64)
void do_divduo (void)
{
if (likely((uint64_t)T1 != 0)) {
xer_ov = 0;
T0 = (uint64_t)T0 / (uint64_t)T1;
} else {
xer_ov = 1;
xer_so = 1;
T0 = 0;
}
}
#endif
void do_mullwo (void)
{
int64_t res = (int64_t)T0 * (int64_t)T1;
if (likely((int32_t)res == res)) {
xer_ov = 0;
} else {
xer_ov = 1;
xer_so = 1;
}
T0 = (int32_t)res;
}
#if defined(TARGET_PPC64)
void do_mulldo (void)
{
int64_t th;
uint64_t tl;
muls64(&tl, &th, T0, T1);
T0 = (int64_t)tl;
/* If th != 0 && th != -1, then we had an overflow */
if (likely((uint64_t)(th + 1) <= 1)) {
xer_ov = 0;
} else {
xer_ov = 1;
}
xer_so |= xer_ov;
}
#endif
void do_nego (void)
{
if (likely((int32_t)T0 != INT32_MIN)) {
xer_ov = 0;
T0 = -(int32_t)T0;
} else {
xer_ov = 1;
xer_so = 1;
}
}
#if defined(TARGET_PPC64)
void do_nego_64 (void)
{
if (likely((int64_t)T0 != INT64_MIN)) {
xer_ov = 0;
T0 = -(int64_t)T0;
} else {
xer_ov = 1;
xer_so = 1;
}
}
#endif
void do_subfe (void)
{
T0 = T1 + ~T0 + xer_ca;
if (likely((uint32_t)T0 >= (uint32_t)T1 &&
(xer_ca == 0 || (uint32_t)T0 != (uint32_t)T1))) {
xer_ca = 0;
} else {
xer_ca = 1;
}
}
#if defined(TARGET_PPC64)
void do_subfe_64 (void)
{
T0 = T1 + ~T0 + xer_ca;
if (likely((uint64_t)T0 >= (uint64_t)T1 &&
(xer_ca == 0 || (uint64_t)T0 != (uint64_t)T1))) {
xer_ca = 0;
} else {
xer_ca = 1;
}
}
#endif
void do_subfmeo (void)
{
T1 = T0;
T0 = ~T0 + xer_ca - 1;
xer_ov = ((uint32_t)~T1 & ((uint32_t)~T1 ^ (uint32_t)T0)) >> 31;
xer_so |= xer_ov;
if (likely((uint32_t)T1 != UINT32_MAX))
xer_ca = 1;
else
xer_ca = 0;
}
#if defined(TARGET_PPC64)
void do_subfmeo_64 (void)
{
T1 = T0;
T0 = ~T0 + xer_ca - 1;
xer_ov = ((uint64_t)~T1 & ((uint64_t)~T1 ^ (uint64_t)T0)) >> 63;
xer_so |= xer_ov;
if (likely((uint64_t)T1 != UINT64_MAX))
xer_ca = 1;
else
xer_ca = 0;
}
#endif
void do_subfzeo (void)
{
T1 = T0;
T0 = ~T0 + xer_ca;
xer_ov = (((uint32_t)~T1 ^ UINT32_MAX) &
((uint32_t)(~T1) ^ (uint32_t)T0)) >> 31;
xer_so |= xer_ov;
if (likely((uint32_t)T0 >= (uint32_t)~T1)) {
xer_ca = 0;
} else {
xer_ca = 1;
}
}
#if defined(TARGET_PPC64)
void do_subfzeo_64 (void)
{
T1 = T0;
T0 = ~T0 + xer_ca;
xer_ov = (((uint64_t)~T1 ^ UINT64_MAX) &
((uint64_t)(~T1) ^ (uint64_t)T0)) >> 63;
xer_so |= xer_ov;
if (likely((uint64_t)T0 >= (uint64_t)~T1)) {
xer_ca = 0;
} else {
xer_ca = 1;
}
}
#endif
void do_cntlzw (void)
{
T0 = clz32(T0);
}
#if defined(TARGET_PPC64)
void do_cntlzd (void)
{
T0 = clz64(T0);
}
#endif
/* shift right arithmetic helper */
void do_sraw (void)
{
int32_t ret;
if (likely(!(T1 & 0x20UL))) {
if (likely((uint32_t)T1 != 0)) {
ret = (int32_t)T0 >> (T1 & 0x1fUL);
if (likely(ret >= 0 || ((int32_t)T0 & ((1 << T1) - 1)) == 0)) {
xer_ca = 0;
} else {
xer_ca = 1;
}
} else {
ret = T0;
xer_ca = 0;
}
} else {
ret = UINT32_MAX * ((uint32_t)T0 >> 31);
if (likely(ret >= 0 || ((uint32_t)T0 & ~0x80000000UL) == 0)) {
xer_ca = 0;
} else {
xer_ca = 1;
}
}
T0 = ret;
}
#if defined(TARGET_PPC64)
void do_srad (void)
{
int64_t ret;
if (likely(!(T1 & 0x40UL))) {
if (likely((uint64_t)T1 != 0)) {
ret = (int64_t)T0 >> (T1 & 0x3FUL);
if (likely(ret >= 0 || ((int64_t)T0 & ((1 << T1) - 1)) == 0)) {
xer_ca = 0;
} else {
xer_ca = 1;
}
} else {
ret = T0;
xer_ca = 0;
}
} else {
ret = UINT64_MAX * ((uint64_t)T0 >> 63);
if (likely(ret >= 0 || ((uint64_t)T0 & ~0x8000000000000000ULL) == 0)) {
xer_ca = 0;
} else {
xer_ca = 1;
}
}
T0 = ret;
}
#endif
void do_popcntb (void)
{
uint32_t ret;
int i;
ret = 0;
for (i = 0; i < 32; i += 8)
ret |= ctpop8((T0 >> i) & 0xFF) << i;
T0 = ret;
}
#if defined(TARGET_PPC64)
void do_popcntb_64 (void)
{
uint64_t ret;
int i;
ret = 0;
for (i = 0; i < 64; i += 8)
ret |= ctpop8((T0 >> i) & 0xFF) << i;
T0 = ret;
}
#endif
/*****************************************************************************/
/* Floating point operations helpers */
static always_inline int fpisneg (float64 f)
{
union {
float64 f;
uint64_t u;
} u;
u.f = f;
return u.u >> 63 != 0;
}
static always_inline int isden (float f)
{
union {
float64 f;
uint64_t u;
} u;
u.f = f;
return ((u.u >> 52) & 0x7FF) == 0;
}
static always_inline int iszero (float64 f)
{
union {
float64 f;
uint64_t u;
} u;
u.f = f;
return (u.u & ~0x8000000000000000ULL) == 0;
}
static always_inline int isinfinity (float64 f)
{
union {
float64 f;
uint64_t u;
} u;
u.f = f;
return ((u.u >> 52) & 0x7FF) == 0x7FF &&
(u.u & 0x000FFFFFFFFFFFFFULL) == 0;
}
void do_compute_fprf (int set_fprf)
{
int isneg;
isneg = fpisneg(FT0);
if (unlikely(float64_is_nan(FT0))) {
if (float64_is_signaling_nan(FT0)) {
/* Signaling NaN: flags are undefined */
T0 = 0x00;
} else {
/* Quiet NaN */
T0 = 0x11;
}
} else if (unlikely(isinfinity(FT0))) {
/* +/- infinity */
if (isneg)
T0 = 0x09;
else
T0 = 0x05;
} else {
if (iszero(FT0)) {
/* +/- zero */
if (isneg)
T0 = 0x12;
else
T0 = 0x02;
} else {
if (isden(FT0)) {
/* Denormalized numbers */
T0 = 0x10;
} else {
/* Normalized numbers */
T0 = 0x00;
}
if (isneg) {
T0 |= 0x08;
} else {
T0 |= 0x04;
}
}
}
if (set_fprf) {
/* We update FPSCR_FPRF */
env->fpscr &= ~(0x1F << FPSCR_FPRF);
env->fpscr |= T0 << FPSCR_FPRF;
}
/* We just need fpcc to update Rc1 */
T0 &= 0xF;
}
/* Floating-point invalid operations exception */
static always_inline void fload_invalid_op_excp (int op)
{
int ve;
ve = fpscr_ve;
if (op & POWERPC_EXCP_FP_VXSNAN) {
/* Operation on signaling NaN */
env->fpscr |= 1 << FPSCR_VXSNAN;
}
if (op & POWERPC_EXCP_FP_VXSOFT) {
/* Software-defined condition */
env->fpscr |= 1 << FPSCR_VXSOFT;
}
switch (op & ~(POWERPC_EXCP_FP_VXSOFT | POWERPC_EXCP_FP_VXSNAN)) {
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;
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 */
FT0 = UINT64_MAX;
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 */
FT0 = UINT64_MAX;
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)
do_raise_exception_err(POWERPC_EXCP_PROGRAM, POWERPC_EXCP_FP | op);
}
}
static always_inline void float_zero_divide_excp (void)
{
union {
float64 f;
uint64_t u;
} u0, u1;
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) {
do_raise_exception_err(POWERPC_EXCP_PROGRAM,
POWERPC_EXCP_FP | POWERPC_EXCP_FP_ZX);
}
} else {
/* Set the result to infinity */
u0.f = FT0;
u1.f = FT1;
u0.u = ((u0.u ^ u1.u) & 0x8000000000000000ULL);
u0.u |= 0x7FFULL << 52;
FT0 = u0.f;
}
}
static always_inline void float_overflow_excp (void)
{
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 always_inline void float_underflow_excp (void)
{
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 always_inline void float_inexact_excp (void)
{
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 always_inline void fpscr_set_rounding_mode (void)
{
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 do_fpscr_setbit (int 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;
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();
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;
}
}
}
#if defined(WORDS_BIGENDIAN)
#define WORD0 0
#define WORD1 1
#else
#define WORD0 1
#define WORD1 0
#endif
void do_store_fpscr (uint32_t mask)
{
/*
* We use only the 32 LSB of the incoming fpr
*/
union {
double d;
struct {
uint32_t u[2];
} s;
} u;
uint32_t prev, new;
int i;
u.d = FT0;
prev = env->fpscr;
new = u.s.u[WORD1];
new &= ~0x90000000;
new |= prev & 0x90000000;
for (i = 0; i < 7; i++) {
if (mask & (1 << i)) {
env->fpscr &= ~(0xF << (4 * i));
env->fpscr |= new & (0xF << (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();
}
#undef WORD0
#undef WORD1
#ifdef CONFIG_SOFTFLOAT
void do_float_check_status (void)
{
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)
do_raise_exception_err(env->exception_index, env->error_code);
} else if (env->fp_status.float_exception_flags & float_flag_overflow) {
float_overflow_excp();
} else if (env->fp_status.float_exception_flags & float_flag_underflow) {
float_underflow_excp();
} else if (env->fp_status.float_exception_flags & float_flag_inexact) {
float_inexact_excp();
}
}
#endif
#if USE_PRECISE_EMULATION
void do_fadd (void)
{
if (unlikely(float64_is_signaling_nan(FT0) ||
float64_is_signaling_nan(FT1))) {
/* sNaN addition */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else if (likely(isfinite(FT0) || isfinite(FT1) ||
fpisneg(FT0) == fpisneg(FT1))) {
FT0 = float64_add(FT0, FT1, &env->fp_status);
} else {
/* Magnitude subtraction of infinities */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXISI);
}
}
void do_fsub (void)
{
if (unlikely(float64_is_signaling_nan(FT0) ||
float64_is_signaling_nan(FT1))) {
/* sNaN subtraction */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else if (likely(isfinite(FT0) || isfinite(FT1) ||
fpisneg(FT0) != fpisneg(FT1))) {
FT0 = float64_sub(FT0, FT1, &env->fp_status);
} else {
/* Magnitude subtraction of infinities */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXISI);
}
}
void do_fmul (void)
{
if (unlikely(float64_is_signaling_nan(FT0) ||
float64_is_signaling_nan(FT1))) {
/* sNaN multiplication */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else if (unlikely((isinfinity(FT0) && iszero(FT1)) ||
(iszero(FT0) && isinfinity(FT1)))) {
/* Multiplication of zero by infinity */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXIMZ);
} else {
FT0 = float64_mul(FT0, FT1, &env->fp_status);
}
}
void do_fdiv (void)
{
if (unlikely(float64_is_signaling_nan(FT0) ||
float64_is_signaling_nan(FT1))) {
/* sNaN division */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else if (unlikely(isinfinity(FT0) && isinfinity(FT1))) {
/* Division of infinity by infinity */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXIDI);
} else if (unlikely(iszero(FT1))) {
if (iszero(FT0)) {
/* Division of zero by zero */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXZDZ);
} else {
/* Division by zero */
float_zero_divide_excp();
}
} else {
FT0 = float64_div(FT0, FT1, &env->fp_status);
}
}
#endif /* USE_PRECISE_EMULATION */
void do_fctiw (void)
{
union {
double d;
uint64_t i;
} p;
if (unlikely(float64_is_signaling_nan(FT0))) {
/* sNaN conversion */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN | POWERPC_EXCP_FP_VXCVI);
} else if (unlikely(float64_is_nan(FT0) || isinfinity(FT0))) {
/* qNan / infinity conversion */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXCVI);
} else {
p.i = float64_to_int32(FT0, &env->fp_status);
#if USE_PRECISE_EMULATION
/* XXX: higher bits are not supposed to be significant.
* to make tests easier, return the same as a real PowerPC 750
*/
p.i |= 0xFFF80000ULL << 32;
#endif
FT0 = p.d;
}
}
void do_fctiwz (void)
{
union {
double d;
uint64_t i;
} p;
if (unlikely(float64_is_signaling_nan(FT0))) {
/* sNaN conversion */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN | POWERPC_EXCP_FP_VXCVI);
} else if (unlikely(float64_is_nan(FT0) || isinfinity(FT0))) {
/* qNan / infinity conversion */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXCVI);
} else {
p.i = float64_to_int32_round_to_zero(FT0, &env->fp_status);
#if USE_PRECISE_EMULATION
/* XXX: higher bits are not supposed to be significant.
* to make tests easier, return the same as a real PowerPC 750
*/
p.i |= 0xFFF80000ULL << 32;
#endif
FT0 = p.d;
}
}
#if defined(TARGET_PPC64)
void do_fcfid (void)
{
union {
double d;
uint64_t i;
} p;
p.d = FT0;
FT0 = int64_to_float64(p.i, &env->fp_status);
}
void do_fctid (void)
{
union {
double d;
uint64_t i;
} p;
if (unlikely(float64_is_signaling_nan(FT0))) {
/* sNaN conversion */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN | POWERPC_EXCP_FP_VXCVI);
} else if (unlikely(float64_is_nan(FT0) || isinfinity(FT0))) {
/* qNan / infinity conversion */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXCVI);
} else {
p.i = float64_to_int64(FT0, &env->fp_status);
FT0 = p.d;
}
}
void do_fctidz (void)
{
union {
double d;
uint64_t i;
} p;
if (unlikely(float64_is_signaling_nan(FT0))) {
/* sNaN conversion */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN | POWERPC_EXCP_FP_VXCVI);
} else if (unlikely(float64_is_nan(FT0) || isinfinity(FT0))) {
/* qNan / infinity conversion */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXCVI);
} else {
p.i = float64_to_int64_round_to_zero(FT0, &env->fp_status);
FT0 = p.d;
}
}
#endif
static always_inline void do_fri (int rounding_mode)
{
if (unlikely(float64_is_signaling_nan(FT0))) {
/* sNaN round */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN | POWERPC_EXCP_FP_VXCVI);
} else if (unlikely(float64_is_nan(FT0) || isinfinity(FT0))) {
/* qNan / infinity round */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXCVI);
} else {
set_float_rounding_mode(rounding_mode, &env->fp_status);
FT0 = float64_round_to_int(FT0, &env->fp_status);
/* Restore rounding mode from FPSCR */
fpscr_set_rounding_mode();
}
}
void do_frin (void)
{
do_fri(float_round_nearest_even);
}
void do_friz (void)
{
do_fri(float_round_to_zero);
}
void do_frip (void)
{
do_fri(float_round_up);
}
void do_frim (void)
{
do_fri(float_round_down);
}
#if USE_PRECISE_EMULATION
void do_fmadd (void)
{
if (unlikely(float64_is_signaling_nan(FT0) ||
float64_is_signaling_nan(FT1) ||
float64_is_signaling_nan(FT2))) {
/* sNaN operation */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else {
#ifdef FLOAT128
/* This is the way the PowerPC specification defines it */
float128 ft0_128, ft1_128;
ft0_128 = float64_to_float128(FT0, &env->fp_status);
ft1_128 = float64_to_float128(FT1, &env->fp_status);
ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status);
ft1_128 = float64_to_float128(FT2, &env->fp_status);
ft0_128 = float128_add(ft0_128, ft1_128, &env->fp_status);
FT0 = float128_to_float64(ft0_128, &env->fp_status);
#else
/* This is OK on x86 hosts */
FT0 = (FT0 * FT1) + FT2;
#endif
}
}
void do_fmsub (void)
{
if (unlikely(float64_is_signaling_nan(FT0) ||
float64_is_signaling_nan(FT1) ||
float64_is_signaling_nan(FT2))) {
/* sNaN operation */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else {
#ifdef FLOAT128
/* This is the way the PowerPC specification defines it */
float128 ft0_128, ft1_128;
ft0_128 = float64_to_float128(FT0, &env->fp_status);
ft1_128 = float64_to_float128(FT1, &env->fp_status);
ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status);
ft1_128 = float64_to_float128(FT2, &env->fp_status);
ft0_128 = float128_sub(ft0_128, ft1_128, &env->fp_status);
FT0 = float128_to_float64(ft0_128, &env->fp_status);
#else
/* This is OK on x86 hosts */
FT0 = (FT0 * FT1) - FT2;
#endif
}
}
#endif /* USE_PRECISE_EMULATION */
void do_fnmadd (void)
{
if (unlikely(float64_is_signaling_nan(FT0) ||
float64_is_signaling_nan(FT1) ||
float64_is_signaling_nan(FT2))) {
/* sNaN operation */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else {
#if USE_PRECISE_EMULATION
#ifdef FLOAT128
/* This is the way the PowerPC specification defines it */
float128 ft0_128, ft1_128;
ft0_128 = float64_to_float128(FT0, &env->fp_status);
ft1_128 = float64_to_float128(FT1, &env->fp_status);
ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status);
ft1_128 = float64_to_float128(FT2, &env->fp_status);
ft0_128 = float128_add(ft0_128, ft1_128, &env->fp_status);
FT0 = float128_to_float64(ft0_128, &env->fp_status);
#else
/* This is OK on x86 hosts */
FT0 = (FT0 * FT1) + FT2;
#endif
#else
FT0 = float64_mul(FT0, FT1, &env->fp_status);
FT0 = float64_add(FT0, FT2, &env->fp_status);
#endif
if (likely(!isnan(FT0)))
FT0 = float64_chs(FT0);
}
}
void do_fnmsub (void)
{
if (unlikely(float64_is_signaling_nan(FT0) ||
float64_is_signaling_nan(FT1) ||
float64_is_signaling_nan(FT2))) {
/* sNaN operation */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else {
#if USE_PRECISE_EMULATION
#ifdef FLOAT128
/* This is the way the PowerPC specification defines it */
float128 ft0_128, ft1_128;
ft0_128 = float64_to_float128(FT0, &env->fp_status);
ft1_128 = float64_to_float128(FT1, &env->fp_status);
ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status);
ft1_128 = float64_to_float128(FT2, &env->fp_status);
ft0_128 = float128_sub(ft0_128, ft1_128, &env->fp_status);
FT0 = float128_to_float64(ft0_128, &env->fp_status);
#else
/* This is OK on x86 hosts */
FT0 = (FT0 * FT1) - FT2;
#endif
#else
FT0 = float64_mul(FT0, FT1, &env->fp_status);
FT0 = float64_sub(FT0, FT2, &env->fp_status);
#endif
if (likely(!isnan(FT0)))
FT0 = float64_chs(FT0);
}
}
#if USE_PRECISE_EMULATION
void do_frsp (void)
{
if (unlikely(float64_is_signaling_nan(FT0))) {
/* sNaN square root */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else {
FT0 = float64_to_float32(FT0, &env->fp_status);
}
}
#endif /* USE_PRECISE_EMULATION */
void do_fsqrt (void)
{
if (unlikely(float64_is_signaling_nan(FT0))) {
/* sNaN square root */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else if (unlikely(fpisneg(FT0) && !iszero(FT0))) {
/* Square root of a negative nonzero number */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSQRT);
} else {
FT0 = float64_sqrt(FT0, &env->fp_status);
}
}
void do_fre (void)
{
union {
double d;
uint64_t i;
} p;
if (unlikely(float64_is_signaling_nan(FT0))) {
/* sNaN reciprocal */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else if (unlikely(iszero(FT0))) {
/* Zero reciprocal */
float_zero_divide_excp();
} else if (likely(isnormal(FT0))) {
FT0 = float64_div(1.0, FT0, &env->fp_status);
} else {
p.d = FT0;
if (p.i == 0x8000000000000000ULL) {
p.i = 0xFFF0000000000000ULL;
} else if (p.i == 0x0000000000000000ULL) {
p.i = 0x7FF0000000000000ULL;
} else if (isnan(FT0)) {
p.i = 0x7FF8000000000000ULL;
} else if (fpisneg(FT0)) {
p.i = 0x8000000000000000ULL;
} else {
p.i = 0x0000000000000000ULL;
}
FT0 = p.d;
}
}
void do_fres (void)
{
union {
double d;
uint64_t i;
} p;
if (unlikely(float64_is_signaling_nan(FT0))) {
/* sNaN reciprocal */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else if (unlikely(iszero(FT0))) {
/* Zero reciprocal */
float_zero_divide_excp();
} else if (likely(isnormal(FT0))) {
#if USE_PRECISE_EMULATION
FT0 = float64_div(1.0, FT0, &env->fp_status);
FT0 = float64_to_float32(FT0, &env->fp_status);
#else
FT0 = float32_div(1.0, FT0, &env->fp_status);
#endif
} else {
p.d = FT0;
if (p.i == 0x8000000000000000ULL) {
p.i = 0xFFF0000000000000ULL;
} else if (p.i == 0x0000000000000000ULL) {
p.i = 0x7FF0000000000000ULL;
} else if (isnan(FT0)) {
p.i = 0x7FF8000000000000ULL;
} else if (fpisneg(FT0)) {
p.i = 0x8000000000000000ULL;
} else {
p.i = 0x0000000000000000ULL;
}
FT0 = p.d;
}
}
void do_frsqrte (void)
{
union {
double d;
uint64_t i;
} p;
if (unlikely(float64_is_signaling_nan(FT0))) {
/* sNaN reciprocal square root */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else if (unlikely(fpisneg(FT0) && !iszero(FT0))) {
/* Reciprocal square root of a negative nonzero number */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSQRT);
} else if (likely(isnormal(FT0))) {
FT0 = float64_sqrt(FT0, &env->fp_status);
FT0 = float32_div(1.0, FT0, &env->fp_status);
} else {
p.d = FT0;
if (p.i == 0x8000000000000000ULL) {
p.i = 0xFFF0000000000000ULL;
} else if (p.i == 0x0000000000000000ULL) {
p.i = 0x7FF0000000000000ULL;
} else if (isnan(FT0)) {
p.i |= 0x000FFFFFFFFFFFFFULL;
} else if (fpisneg(FT0)) {
p.i = 0x7FF8000000000000ULL;
} else {
p.i = 0x0000000000000000ULL;
}
FT0 = p.d;
}
}
void do_fsel (void)
{
if (!fpisneg(FT0) || iszero(FT0))
FT0 = FT1;
else
FT0 = FT2;
}
void do_fcmpu (void)
{
if (unlikely(float64_is_signaling_nan(FT0) ||
float64_is_signaling_nan(FT1))) {
/* sNaN comparison */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else {
if (float64_lt(FT0, FT1, &env->fp_status)) {
T0 = 0x08UL;
} else if (!float64_le(FT0, FT1, &env->fp_status)) {
T0 = 0x04UL;
} else {
T0 = 0x02UL;
}
}
env->fpscr &= ~(0x0F << FPSCR_FPRF);
env->fpscr |= T0 << FPSCR_FPRF;
}
void do_fcmpo (void)
{
if (unlikely(float64_is_nan(FT0) ||
float64_is_nan(FT1))) {
if (float64_is_signaling_nan(FT0) ||
float64_is_signaling_nan(FT1)) {
/* sNaN comparison */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN |
POWERPC_EXCP_FP_VXVC);
} else {
/* qNaN comparison */
fload_invalid_op_excp(POWERPC_EXCP_FP_VXVC);
}
} else {
if (float64_lt(FT0, FT1, &env->fp_status)) {
T0 = 0x08UL;
} else if (!float64_le(FT0, FT1, &env->fp_status)) {
T0 = 0x04UL;
} else {
T0 = 0x02UL;
}
}
env->fpscr &= ~(0x0F << FPSCR_FPRF);
env->fpscr |= T0 << FPSCR_FPRF;
}
#if !defined (CONFIG_USER_ONLY)
void cpu_dump_rfi (target_ulong RA, target_ulong msr);
void do_store_msr (void)
{
T0 = hreg_store_msr(env, T0, 0);
if (T0 != 0) {
env->interrupt_request |= CPU_INTERRUPT_EXITTB;
do_raise_exception(T0);
}
}
static always_inline void __do_rfi (target_ulong nip, target_ulong msr,
target_ulong msrm, int keep_msrh)
{
#if defined(TARGET_PPC64)
if (msr & (1ULL << MSR_SF)) {
nip = (uint64_t)nip;
msr &= (uint64_t)msrm;
} else {
nip = (uint32_t)nip;
msr = (uint32_t)(msr & msrm);
if (keep_msrh)
msr |= env->msr & ~((uint64_t)0xFFFFFFFF);
}
#else
nip = (uint32_t)nip;
msr &= (uint32_t)msrm;
#endif
/* XXX: beware: this is false if VLE is supported */
env->nip = nip & ~((target_ulong)0x00000003);
hreg_store_msr(env, msr, 1);
#if defined (DEBUG_OP)
cpu_dump_rfi(env->nip, env->msr);
#endif
/* No need to raise an exception here,
* as rfi is always the last insn of a TB
*/
env->interrupt_request |= CPU_INTERRUPT_EXITTB;
}
void do_rfi (void)
{
__do_rfi(env->spr[SPR_SRR0], env->spr[SPR_SRR1],
~((target_ulong)0xFFFF0000), 1);
}
#if defined(TARGET_PPC64)
void do_rfid (void)
{
__do_rfi(env->spr[SPR_SRR0], env->spr[SPR_SRR1],
~((target_ulong)0xFFFF0000), 0);
}
void do_hrfid (void)
{
__do_rfi(env->spr[SPR_HSRR0], env->spr[SPR_HSRR1],
~((target_ulong)0xFFFF0000), 0);
}
#endif
#endif
void do_tw (int flags)
{
if (!likely(!(((int32_t)T0 < (int32_t)T1 && (flags & 0x10)) ||
((int32_t)T0 > (int32_t)T1 && (flags & 0x08)) ||
((int32_t)T0 == (int32_t)T1 && (flags & 0x04)) ||
((uint32_t)T0 < (uint32_t)T1 && (flags & 0x02)) ||
((uint32_t)T0 > (uint32_t)T1 && (flags & 0x01))))) {
do_raise_exception_err(POWERPC_EXCP_PROGRAM, POWERPC_EXCP_TRAP);
}
}
#if defined(TARGET_PPC64)
void do_td (int flags)
{
if (!likely(!(((int64_t)T0 < (int64_t)T1 && (flags & 0x10)) ||
((int64_t)T0 > (int64_t)T1 && (flags & 0x08)) ||
((int64_t)T0 == (int64_t)T1 && (flags & 0x04)) ||
((uint64_t)T0 < (uint64_t)T1 && (flags & 0x02)) ||
((uint64_t)T0 > (uint64_t)T1 && (flags & 0x01)))))
do_raise_exception_err(POWERPC_EXCP_PROGRAM, POWERPC_EXCP_TRAP);
}
#endif
/*****************************************************************************/
/* PowerPC 601 specific instructions (POWER bridge) */
void do_POWER_abso (void)
{
if ((int32_t)T0 == INT32_MIN) {
T0 = INT32_MAX;
xer_ov = 1;
} else if ((int32_t)T0 < 0) {
T0 = -T0;
xer_ov = 0;
} else {
xer_ov = 0;
}
xer_so |= xer_ov;
}
void do_POWER_clcs (void)
{
switch (T0) {
case 0x0CUL:
/* Instruction cache line size */
T0 = env->icache_line_size;
break;
case 0x0DUL:
/* Data cache line size */
T0 = env->dcache_line_size;
break;
case 0x0EUL:
/* Minimum cache line size */
T0 = env->icache_line_size < env->dcache_line_size ?
env->icache_line_size : env->dcache_line_size;
break;
case 0x0FUL:
/* Maximum cache line size */
T0 = env->icache_line_size > env->dcache_line_size ?
env->icache_line_size : env->dcache_line_size;
break;
default:
/* Undefined */
break;
}
}
void do_POWER_div (void)
{
uint64_t tmp;
if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == (int32_t)-1) ||
(int32_t)T1 == 0) {
T0 = UINT32_MAX * ((uint32_t)T0 >> 31);
env->spr[SPR_MQ] = 0;
} else {
tmp = ((uint64_t)T0 << 32) | env->spr[SPR_MQ];
env->spr[SPR_MQ] = tmp % T1;
T0 = tmp / (int32_t)T1;
}
}
void do_POWER_divo (void)
{
int64_t tmp;
if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == (int32_t)-1) ||
(int32_t)T1 == 0) {
T0 = UINT32_MAX * ((uint32_t)T0 >> 31);
env->spr[SPR_MQ] = 0;
xer_ov = 1;
} else {
tmp = ((uint64_t)T0 << 32) | env->spr[SPR_MQ];
env->spr[SPR_MQ] = tmp % T1;
tmp /= (int32_t)T1;
if (tmp > (int64_t)INT32_MAX || tmp < (int64_t)INT32_MIN) {
xer_ov = 1;
} else {
xer_ov = 0;
}
T0 = tmp;
}
xer_so |= xer_ov;
}
void do_POWER_divs (void)
{
if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == (int32_t)-1) ||
(int32_t)T1 == 0) {
T0 = UINT32_MAX * ((uint32_t)T0 >> 31);
env->spr[SPR_MQ] = 0;
} else {
env->spr[SPR_MQ] = T0 % T1;
T0 = (int32_t)T0 / (int32_t)T1;
}
}
void do_POWER_divso (void)
{
if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == (int32_t)-1) ||
(int32_t)T1 == 0) {
T0 = UINT32_MAX * ((uint32_t)T0 >> 31);
env->spr[SPR_MQ] = 0;
xer_ov = 1;
} else {
T0 = (int32_t)T0 / (int32_t)T1;
env->spr[SPR_MQ] = (int32_t)T0 % (int32_t)T1;
xer_ov = 0;
}
xer_so |= xer_ov;
}
void do_POWER_dozo (void)
{
if ((int32_t)T1 > (int32_t)T0) {
T2 = T0;
T0 = T1 - T0;
if (((uint32_t)(~T2) ^ (uint32_t)T1 ^ UINT32_MAX) &
((uint32_t)(~T2) ^ (uint32_t)T0) & (1UL << 31)) {
xer_ov = 1;
xer_so = 1;
} else {
xer_ov = 0;
}
} else {
T0 = 0;
xer_ov = 0;
}
}
void do_POWER_maskg (void)
{
uint32_t ret;
if ((uint32_t)T0 == (uint32_t)(T1 + 1)) {
ret = UINT32_MAX;
} else {
ret = (UINT32_MAX >> ((uint32_t)T0)) ^
((UINT32_MAX >> ((uint32_t)T1)) >> 1);
if ((uint32_t)T0 > (uint32_t)T1)
ret = ~ret;
}
T0 = ret;
}
void do_POWER_mulo (void)
{
uint64_t tmp;
tmp = (uint64_t)T0 * (uint64_t)T1;
env->spr[SPR_MQ] = tmp >> 32;
T0 = tmp;
if (tmp >> 32 != ((uint64_t)T0 >> 16) * ((uint64_t)T1 >> 16)) {
xer_ov = 1;
xer_so = 1;
} else {
xer_ov = 0;
}
}
#if !defined (CONFIG_USER_ONLY)
void do_POWER_rac (void)
{
mmu_ctx_t ctx;
int nb_BATs;
/* We don't have to generate many instances of this instruction,
* as rac is supervisor only.
*/
/* XXX: FIX THIS: Pretend we have no BAT */
nb_BATs = env->nb_BATs;
env->nb_BATs = 0;
if (get_physical_address(env, &ctx, T0, 0, ACCESS_INT) == 0)
T0 = ctx.raddr;
env->nb_BATs = nb_BATs;
}
void do_POWER_rfsvc (void)
{
__do_rfi(env->lr, env->ctr, 0x0000FFFF, 0);
}
void do_store_hid0_601 (void)
{
uint32_t hid0;
hid0 = env->spr[SPR_HID0];
if ((T0 ^ hid0) & 0x00000008) {
/* Change current endianness */
env->hflags &= ~(1 << MSR_LE);
env->hflags_nmsr &= ~(1 << MSR_LE);
env->hflags_nmsr |= (1 << MSR_LE) & (((T0 >> 3) & 1) << MSR_LE);
env->hflags |= env->hflags_nmsr;
if (loglevel != 0) {
fprintf(logfile, "%s: set endianness to %c => " ADDRX "\n",
__func__, T0 & 0x8 ? 'l' : 'b', env->hflags);
}
}
env->spr[SPR_HID0] = T0;
}
#endif
/*****************************************************************************/
/* 602 specific instructions */
/* mfrom is the most crazy instruction ever seen, imho ! */
/* Real implementation uses a ROM table. Do the same */
#define USE_MFROM_ROM_TABLE
void do_op_602_mfrom (void)
{
if (likely(T0 < 602)) {
#if defined(USE_MFROM_ROM_TABLE)
#include "mfrom_table.c"
T0 = mfrom_ROM_table[T0];
#else
double d;
/* Extremly decomposed:
* -T0 / 256
* T0 = 256 * log10(10 + 1.0) + 0.5
*/
d = T0;
d = float64_div(d, 256, &env->fp_status);
d = float64_chs(d);
d = exp10(d); // XXX: use float emulation function
d = float64_add(d, 1.0, &env->fp_status);
d = log10(d); // XXX: use float emulation function
d = float64_mul(d, 256, &env->fp_status);
d = float64_add(d, 0.5, &env->fp_status);
T0 = float64_round_to_int(d, &env->fp_status);
#endif
} else {
T0 = 0;
}
}
/*****************************************************************************/
/* Embedded PowerPC specific helpers */
void do_405_check_sat (void)
{
if (!likely((((uint32_t)T1 ^ (uint32_t)T2) >> 31) ||
!(((uint32_t)T0 ^ (uint32_t)T2) >> 31))) {
/* Saturate result */
if (T2 >> 31) {
T0 = INT32_MIN;
} else {
T0 = INT32_MAX;
}
}
}
/* XXX: to be improved to check access rights when in user-mode */
void do_load_dcr (void)
{
target_ulong val;
if (unlikely(env->dcr_env == NULL)) {
if (loglevel != 0) {
fprintf(logfile, "No DCR environment\n");
}
do_raise_exception_err(POWERPC_EXCP_PROGRAM,
POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL);
} else if (unlikely(ppc_dcr_read(env->dcr_env, T0, &val) != 0)) {
if (loglevel != 0) {
fprintf(logfile, "DCR read error %d %03x\n", (int)T0, (int)T0);
}
do_raise_exception_err(POWERPC_EXCP_PROGRAM,
POWERPC_EXCP_INVAL | POWERPC_EXCP_PRIV_REG);
} else {
T0 = val;
}
}
void do_store_dcr (void)
{
if (unlikely(env->dcr_env == NULL)) {
if (loglevel != 0) {
fprintf(logfile, "No DCR environment\n");
}
do_raise_exception_err(POWERPC_EXCP_PROGRAM,
POWERPC_EXCP_INVAL | POWERPC_EXCP_INVAL_INVAL);
} else if (unlikely(ppc_dcr_write(env->dcr_env, T0, T1) != 0)) {
if (loglevel != 0) {
fprintf(logfile, "DCR write error %d %03x\n", (int)T0, (int)T0);
}
do_raise_exception_err(POWERPC_EXCP_PROGRAM,
POWERPC_EXCP_INVAL | POWERPC_EXCP_PRIV_REG);
}
}
#if !defined(CONFIG_USER_ONLY)
void do_40x_rfci (void)
{
__do_rfi(env->spr[SPR_40x_SRR2], env->spr[SPR_40x_SRR3],
~((target_ulong)0xFFFF0000), 0);
}
void do_rfci (void)
{
__do_rfi(env->spr[SPR_BOOKE_CSRR0], SPR_BOOKE_CSRR1,
~((target_ulong)0x3FFF0000), 0);
}
void do_rfdi (void)
{
__do_rfi(env->spr[SPR_BOOKE_DSRR0], SPR_BOOKE_DSRR1,
~((target_ulong)0x3FFF0000), 0);
}
void do_rfmci (void)
{
__do_rfi(env->spr[SPR_BOOKE_MCSRR0], SPR_BOOKE_MCSRR1,
~((target_ulong)0x3FFF0000), 0);
}
void do_load_403_pb (int num)
{
T0 = env->pb[num];
}
void do_store_403_pb (int num)
{
if (likely(env->pb[num] != T0)) {
env->pb[num] = T0;
/* Should be optimized */
tlb_flush(env, 1);
}
}
#endif
/* 440 specific */
void do_440_dlmzb (void)
{
target_ulong mask;
int i;
i = 1;
for (mask = 0xFF000000; mask != 0; mask = mask >> 8) {
if ((T0 & mask) == 0)
goto done;
i++;
}
for (mask = 0xFF000000; mask != 0; mask = mask >> 8) {
if ((T1 & mask) == 0)
break;
i++;
}
done:
T0 = i;
}
/* SPE extension helpers */
/* Use a table to make this quicker */
static uint8_t hbrev[16] = {
0x0, 0x8, 0x4, 0xC, 0x2, 0xA, 0x6, 0xE,
0x1, 0x9, 0x5, 0xD, 0x3, 0xB, 0x7, 0xF,
};
static always_inline uint8_t byte_reverse (uint8_t val)
{
return hbrev[val >> 4] | (hbrev[val & 0xF] << 4);
}
static always_inline uint32_t word_reverse (uint32_t val)
{
return byte_reverse(val >> 24) | (byte_reverse(val >> 16) << 8) |
(byte_reverse(val >> 8) << 16) | (byte_reverse(val) << 24);
}
#define MASKBITS 16 // Random value - to be fixed (implementation dependant)
void do_brinc (void)
{
uint32_t a, b, d, mask;
mask = UINT32_MAX >> (32 - MASKBITS);
a = T0 & mask;
b = T1 & mask;
d = word_reverse(1 + word_reverse(a | ~b));
T0 = (T0 & ~mask) | (d & b);
}
#define DO_SPE_OP2(name) \
void do_ev##name (void) \
{ \
T0_64 = ((uint64_t)_do_e##name(T0_64 >> 32, T1_64 >> 32) << 32) | \
(uint64_t)_do_e##name(T0_64, T1_64); \
}
#define DO_SPE_OP1(name) \
void do_ev##name (void) \
{ \
T0_64 = ((uint64_t)_do_e##name(T0_64 >> 32) << 32) | \
(uint64_t)_do_e##name(T0_64); \
}
/* Fixed-point vector arithmetic */
static always_inline uint32_t _do_eabs (uint32_t val)
{
if ((val & 0x80000000) && val != 0x80000000)
val -= val;
return val;
}
static always_inline uint32_t _do_eaddw (uint32_t op1, uint32_t op2)
{
return op1 + op2;
}
static always_inline int _do_ecntlsw (uint32_t val)
{
if (val & 0x80000000)
return clz32(~val);
else
return clz32(val);
}
static always_inline int _do_ecntlzw (uint32_t val)
{
return clz32(val);
}
static always_inline uint32_t _do_eneg (uint32_t val)
{
if (val != 0x80000000)
val -= val;
return val;
}
static always_inline uint32_t _do_erlw (uint32_t op1, uint32_t op2)
{
return rotl32(op1, op2);
}
static always_inline uint32_t _do_erndw (uint32_t val)
{
return (val + 0x000080000000) & 0xFFFF0000;
}
static always_inline uint32_t _do_eslw (uint32_t op1, uint32_t op2)
{
/* No error here: 6 bits are used */
return op1 << (op2 & 0x3F);
}
static always_inline int32_t _do_esrws (int32_t op1, uint32_t op2)
{
/* No error here: 6 bits are used */
return op1 >> (op2 & 0x3F);
}
static always_inline uint32_t _do_esrwu (uint32_t op1, uint32_t op2)
{
/* No error here: 6 bits are used */
return op1 >> (op2 & 0x3F);
}
static always_inline uint32_t _do_esubfw (uint32_t op1, uint32_t op2)
{
return op2 - op1;
}
/* evabs */
DO_SPE_OP1(abs);
/* evaddw */
DO_SPE_OP2(addw);
/* evcntlsw */
DO_SPE_OP1(cntlsw);
/* evcntlzw */
DO_SPE_OP1(cntlzw);
/* evneg */
DO_SPE_OP1(neg);
/* evrlw */
DO_SPE_OP2(rlw);
/* evrnd */
DO_SPE_OP1(rndw);
/* evslw */
DO_SPE_OP2(slw);
/* evsrws */
DO_SPE_OP2(srws);
/* evsrwu */
DO_SPE_OP2(srwu);
/* evsubfw */
DO_SPE_OP2(subfw);
/* evsel is a little bit more complicated... */
static always_inline uint32_t _do_esel (uint32_t op1, uint32_t op2, int n)
{
if (n)
return op1;
else
return op2;
}
void do_evsel (void)
{
T0_64 = ((uint64_t)_do_esel(T0_64 >> 32, T1_64 >> 32, T0 >> 3) << 32) |
(uint64_t)_do_esel(T0_64, T1_64, (T0 >> 2) & 1);
}
/* Fixed-point vector comparisons */
#define DO_SPE_CMP(name) \
void do_ev##name (void) \
{ \
T0 = _do_evcmp_merge((uint64_t)_do_e##name(T0_64 >> 32, \
T1_64 >> 32) << 32, \
_do_e##name(T0_64, T1_64)); \
}
static always_inline uint32_t _do_evcmp_merge (int t0, int t1)
{
return (t0 << 3) | (t1 << 2) | ((t0 | t1) << 1) | (t0 & t1);
}
static always_inline int _do_ecmpeq (uint32_t op1, uint32_t op2)
{
return op1 == op2 ? 1 : 0;
}
static always_inline int _do_ecmpgts (int32_t op1, int32_t op2)
{
return op1 > op2 ? 1 : 0;
}
static always_inline int _do_ecmpgtu (uint32_t op1, uint32_t op2)
{
return op1 > op2 ? 1 : 0;
}
static always_inline int _do_ecmplts (int32_t op1, int32_t op2)
{
return op1 < op2 ? 1 : 0;
}
static always_inline int _do_ecmpltu (uint32_t op1, uint32_t op2)
{
return op1 < op2 ? 1 : 0;
}
/* evcmpeq */
DO_SPE_CMP(cmpeq);
/* evcmpgts */
DO_SPE_CMP(cmpgts);
/* evcmpgtu */
DO_SPE_CMP(cmpgtu);
/* evcmplts */
DO_SPE_CMP(cmplts);
/* evcmpltu */
DO_SPE_CMP(cmpltu);
/* Single precision floating-point conversions from/to integer */
static always_inline uint32_t _do_efscfsi (int32_t val)
{
union {
uint32_t u;
float32 f;
} u;
u.f = int32_to_float32(val, &env->spe_status);
return u.u;
}
static always_inline uint32_t _do_efscfui (uint32_t val)
{
union {
uint32_t u;
float32 f;
} u;
u.f = uint32_to_float32(val, &env->spe_status);
return u.u;
}
static always_inline int32_t _do_efsctsi (uint32_t val)
{
union {
int32_t u;
float32 f;
} u;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
return float32_to_int32(u.f, &env->spe_status);
}
static always_inline uint32_t _do_efsctui (uint32_t val)
{
union {
int32_t u;
float32 f;
} u;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
return float32_to_uint32(u.f, &env->spe_status);
}
static always_inline int32_t _do_efsctsiz (uint32_t val)
{
union {
int32_t u;
float32 f;
} u;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
return float32_to_int32_round_to_zero(u.f, &env->spe_status);
}
static always_inline uint32_t _do_efsctuiz (uint32_t val)
{
union {
int32_t u;
float32 f;
} u;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
return float32_to_uint32_round_to_zero(u.f, &env->spe_status);
}
void do_efscfsi (void)
{
T0_64 = _do_efscfsi(T0_64);
}
void do_efscfui (void)
{
T0_64 = _do_efscfui(T0_64);
}
void do_efsctsi (void)
{
T0_64 = _do_efsctsi(T0_64);
}
void do_efsctui (void)
{
T0_64 = _do_efsctui(T0_64);
}
void do_efsctsiz (void)
{
T0_64 = _do_efsctsiz(T0_64);
}
void do_efsctuiz (void)
{
T0_64 = _do_efsctuiz(T0_64);
}
/* Single precision floating-point conversion to/from fractional */
static always_inline uint32_t _do_efscfsf (uint32_t val)
{
union {
uint32_t u;
float32 f;
} u;
float32 tmp;
u.f = int32_to_float32(val, &env->spe_status);
tmp = int64_to_float32(1ULL << 32, &env->spe_status);
u.f = float32_div(u.f, tmp, &env->spe_status);
return u.u;
}
static always_inline uint32_t _do_efscfuf (uint32_t val)
{
union {
uint32_t u;
float32 f;
} u;
float32 tmp;
u.f = uint32_to_float32(val, &env->spe_status);
tmp = uint64_to_float32(1ULL << 32, &env->spe_status);
u.f = float32_div(u.f, tmp, &env->spe_status);
return u.u;
}
static always_inline int32_t _do_efsctsf (uint32_t val)
{
union {
int32_t u;
float32 f;
} u;
float32 tmp;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
tmp = uint64_to_float32(1ULL << 32, &env->spe_status);
u.f = float32_mul(u.f, tmp, &env->spe_status);
return float32_to_int32(u.f, &env->spe_status);
}
static always_inline uint32_t _do_efsctuf (uint32_t val)
{
union {
int32_t u;
float32 f;
} u;
float32 tmp;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
tmp = uint64_to_float32(1ULL << 32, &env->spe_status);
u.f = float32_mul(u.f, tmp, &env->spe_status);
return float32_to_uint32(u.f, &env->spe_status);
}
static always_inline int32_t _do_efsctsfz (uint32_t val)
{
union {
int32_t u;
float32 f;
} u;
float32 tmp;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
tmp = uint64_to_float32(1ULL << 32, &env->spe_status);
u.f = float32_mul(u.f, tmp, &env->spe_status);
return float32_to_int32_round_to_zero(u.f, &env->spe_status);
}
static always_inline uint32_t _do_efsctufz (uint32_t val)
{
union {
int32_t u;
float32 f;
} u;
float32 tmp;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
tmp = uint64_to_float32(1ULL << 32, &env->spe_status);
u.f = float32_mul(u.f, tmp, &env->spe_status);
return float32_to_uint32_round_to_zero(u.f, &env->spe_status);
}
void do_efscfsf (void)
{
T0_64 = _do_efscfsf(T0_64);
}
void do_efscfuf (void)
{
T0_64 = _do_efscfuf(T0_64);
}
void do_efsctsf (void)
{
T0_64 = _do_efsctsf(T0_64);
}
void do_efsctuf (void)
{
T0_64 = _do_efsctuf(T0_64);
}
void do_efsctsfz (void)
{
T0_64 = _do_efsctsfz(T0_64);
}
void do_efsctufz (void)
{
T0_64 = _do_efsctufz(T0_64);
}
/* Double precision floating point helpers */
static always_inline int _do_efdcmplt (uint64_t op1, uint64_t op2)
{
/* XXX: TODO: test special values (NaN, infinites, ...) */
return _do_efdtstlt(op1, op2);
}
static always_inline int _do_efdcmpgt (uint64_t op1, uint64_t op2)
{
/* XXX: TODO: test special values (NaN, infinites, ...) */
return _do_efdtstgt(op1, op2);
}
static always_inline int _do_efdcmpeq (uint64_t op1, uint64_t op2)
{
/* XXX: TODO: test special values (NaN, infinites, ...) */
return _do_efdtsteq(op1, op2);
}
void do_efdcmplt (void)
{
T0 = _do_efdcmplt(T0_64, T1_64);
}
void do_efdcmpgt (void)
{
T0 = _do_efdcmpgt(T0_64, T1_64);
}
void do_efdcmpeq (void)
{
T0 = _do_efdcmpeq(T0_64, T1_64);
}
/* Double precision floating-point conversion to/from integer */
static always_inline uint64_t _do_efdcfsi (int64_t val)
{
union {
uint64_t u;
float64 f;
} u;
u.f = int64_to_float64(val, &env->spe_status);
return u.u;
}
static always_inline uint64_t _do_efdcfui (uint64_t val)
{
union {
uint64_t u;
float64 f;
} u;
u.f = uint64_to_float64(val, &env->spe_status);
return u.u;
}
static always_inline int64_t _do_efdctsi (uint64_t val)
{
union {
int64_t u;
float64 f;
} u;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
return float64_to_int64(u.f, &env->spe_status);
}
static always_inline uint64_t _do_efdctui (uint64_t val)
{
union {
int64_t u;
float64 f;
} u;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
return float64_to_uint64(u.f, &env->spe_status);
}
static always_inline int64_t _do_efdctsiz (uint64_t val)
{
union {
int64_t u;
float64 f;
} u;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
return float64_to_int64_round_to_zero(u.f, &env->spe_status);
}
static always_inline uint64_t _do_efdctuiz (uint64_t val)
{
union {
int64_t u;
float64 f;
} u;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
return float64_to_uint64_round_to_zero(u.f, &env->spe_status);
}
void do_efdcfsi (void)
{
T0_64 = _do_efdcfsi(T0_64);
}
void do_efdcfui (void)
{
T0_64 = _do_efdcfui(T0_64);
}
void do_efdctsi (void)
{
T0_64 = _do_efdctsi(T0_64);
}
void do_efdctui (void)
{
T0_64 = _do_efdctui(T0_64);
}
void do_efdctsiz (void)
{
T0_64 = _do_efdctsiz(T0_64);
}
void do_efdctuiz (void)
{
T0_64 = _do_efdctuiz(T0_64);
}
/* Double precision floating-point conversion to/from fractional */
static always_inline uint64_t _do_efdcfsf (int64_t val)
{
union {
uint64_t u;
float64 f;
} u;
float64 tmp;
u.f = int32_to_float64(val, &env->spe_status);
tmp = int64_to_float64(1ULL << 32, &env->spe_status);
u.f = float64_div(u.f, tmp, &env->spe_status);
return u.u;
}
static always_inline uint64_t _do_efdcfuf (uint64_t val)
{
union {
uint64_t u;
float64 f;
} u;
float64 tmp;
u.f = uint32_to_float64(val, &env->spe_status);
tmp = int64_to_float64(1ULL << 32, &env->spe_status);
u.f = float64_div(u.f, tmp, &env->spe_status);
return u.u;
}
static always_inline int64_t _do_efdctsf (uint64_t val)
{
union {
int64_t u;
float64 f;
} u;
float64 tmp;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
tmp = uint64_to_float64(1ULL << 32, &env->spe_status);
u.f = float64_mul(u.f, tmp, &env->spe_status);
return float64_to_int32(u.f, &env->spe_status);
}
static always_inline uint64_t _do_efdctuf (uint64_t val)
{
union {
int64_t u;
float64 f;
} u;
float64 tmp;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
tmp = uint64_to_float64(1ULL << 32, &env->spe_status);
u.f = float64_mul(u.f, tmp, &env->spe_status);
return float64_to_uint32(u.f, &env->spe_status);
}
static always_inline int64_t _do_efdctsfz (uint64_t val)
{
union {
int64_t u;
float64 f;
} u;
float64 tmp;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
tmp = uint64_to_float64(1ULL << 32, &env->spe_status);
u.f = float64_mul(u.f, tmp, &env->spe_status);
return float64_to_int32_round_to_zero(u.f, &env->spe_status);
}
static always_inline uint64_t _do_efdctufz (uint64_t val)
{
union {
int64_t u;
float64 f;
} u;
float64 tmp;
u.u = val;
/* NaN are not treated the same way IEEE 754 does */
if (unlikely(isnan(u.f)))
return 0;
tmp = uint64_to_float64(1ULL << 32, &env->spe_status);
u.f = float64_mul(u.f, tmp, &env->spe_status);
return float64_to_uint32_round_to_zero(u.f, &env->spe_status);
}
void do_efdcfsf (void)
{
T0_64 = _do_efdcfsf(T0_64);
}
void do_efdcfuf (void)
{
T0_64 = _do_efdcfuf(T0_64);
}
void do_efdctsf (void)
{
T0_64 = _do_efdctsf(T0_64);
}
void do_efdctuf (void)
{
T0_64 = _do_efdctuf(T0_64);
}
void do_efdctsfz (void)
{
T0_64 = _do_efdctsfz(T0_64);
}
void do_efdctufz (void)
{
T0_64 = _do_efdctufz(T0_64);
}
/* Floating point conversion between single and double precision */
static always_inline uint32_t _do_efscfd (uint64_t val)
{
union {
uint64_t u;
float64 f;
} u1;
union {
uint32_t u;
float32 f;
} u2;
u1.u = val;
u2.f = float64_to_float32(u1.f, &env->spe_status);
return u2.u;
}
static always_inline uint64_t _do_efdcfs (uint32_t val)
{
union {
uint64_t u;
float64 f;
} u2;
union {
uint32_t u;
float32 f;
} u1;
u1.u = val;
u2.f = float32_to_float64(u1.f, &env->spe_status);
return u2.u;
}
void do_efscfd (void)
{
T0_64 = _do_efscfd(T0_64);
}
void do_efdcfs (void)
{
T0_64 = _do_efdcfs(T0_64);
}
/* Single precision fixed-point vector arithmetic */
/* evfsabs */
DO_SPE_OP1(fsabs);
/* evfsnabs */
DO_SPE_OP1(fsnabs);
/* evfsneg */
DO_SPE_OP1(fsneg);
/* evfsadd */
DO_SPE_OP2(fsadd);
/* evfssub */
DO_SPE_OP2(fssub);
/* evfsmul */
DO_SPE_OP2(fsmul);
/* evfsdiv */
DO_SPE_OP2(fsdiv);
/* Single-precision floating-point comparisons */
static always_inline int _do_efscmplt (uint32_t op1, uint32_t op2)
{
/* XXX: TODO: test special values (NaN, infinites, ...) */
return _do_efststlt(op1, op2);
}
static always_inline int _do_efscmpgt (uint32_t op1, uint32_t op2)
{
/* XXX: TODO: test special values (NaN, infinites, ...) */
return _do_efststgt(op1, op2);
}
static always_inline int _do_efscmpeq (uint32_t op1, uint32_t op2)
{
/* XXX: TODO: test special values (NaN, infinites, ...) */
return _do_efststeq(op1, op2);
}
void do_efscmplt (void)
{
T0 = _do_efscmplt(T0_64, T1_64);
}
void do_efscmpgt (void)
{
T0 = _do_efscmpgt(T0_64, T1_64);
}
void do_efscmpeq (void)
{
T0 = _do_efscmpeq(T0_64, T1_64);
}
/* Single-precision floating-point vector comparisons */
/* evfscmplt */
DO_SPE_CMP(fscmplt);
/* evfscmpgt */
DO_SPE_CMP(fscmpgt);
/* evfscmpeq */
DO_SPE_CMP(fscmpeq);
/* evfststlt */
DO_SPE_CMP(fststlt);
/* evfststgt */
DO_SPE_CMP(fststgt);
/* evfststeq */
DO_SPE_CMP(fststeq);
/* Single-precision floating-point vector conversions */
/* evfscfsi */
DO_SPE_OP1(fscfsi);
/* evfscfui */
DO_SPE_OP1(fscfui);
/* evfscfuf */
DO_SPE_OP1(fscfuf);
/* evfscfsf */
DO_SPE_OP1(fscfsf);
/* evfsctsi */
DO_SPE_OP1(fsctsi);
/* evfsctui */
DO_SPE_OP1(fsctui);
/* evfsctsiz */
DO_SPE_OP1(fsctsiz);
/* evfsctuiz */
DO_SPE_OP1(fsctuiz);
/* evfsctsf */
DO_SPE_OP1(fsctsf);
/* evfsctuf */
DO_SPE_OP1(fsctuf);
/*****************************************************************************/
/* Softmmu support */
#if !defined (CONFIG_USER_ONLY)
#define MMUSUFFIX _mmu
#ifdef __s390__
# define GETPC() ((void*)((unsigned long)__builtin_return_address(0) & 0x7fffffffUL))
#else
# define GETPC() (__builtin_return_address(0))
#endif
#define SHIFT 0
#include "softmmu_template.h"
#define SHIFT 1
#include "softmmu_template.h"
#define SHIFT 2
#include "softmmu_template.h"
#define SHIFT 3
#include "softmmu_template.h"
/* try to fill the TLB and return an exception if error. If retaddr is
NULL, it means that the function was called in C code (i.e. not
from generated code or from helper.c) */
/* XXX: fix it to restore all registers */
void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr)
{
TranslationBlock *tb;
CPUState *saved_env;
unsigned long pc;
int ret;
/* XXX: hack to restore env in all cases, even if not called from
generated code */
saved_env = env;
env = cpu_single_env;
ret = cpu_ppc_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
if (unlikely(ret != 0)) {
if (likely(retaddr)) {
/* now we have a real cpu fault */
pc = (unsigned long)retaddr;
tb = tb_find_pc(pc);
if (likely(tb)) {
/* the PC is inside the translated code. It means that we have
a virtual CPU fault */
cpu_restore_state(tb, env, pc, NULL);
}
}
do_raise_exception_err(env->exception_index, env->error_code);
}
env = saved_env;
}
/* Software driven TLBs management */
/* PowerPC 602/603 software TLB load instructions helpers */
void do_load_6xx_tlb (int is_code)
{
target_ulong RPN, CMP, EPN;
int way;
RPN = env->spr[SPR_RPA];
if (is_code) {
CMP = env->spr[SPR_ICMP];
EPN = env->spr[SPR_IMISS];
} else {
CMP = env->spr[SPR_DCMP];
EPN = env->spr[SPR_DMISS];
}
way = (env->spr[SPR_SRR1] >> 17) & 1;
#if defined (DEBUG_SOFTWARE_TLB)
if (loglevel != 0) {
fprintf(logfile, "%s: EPN " TDX " " ADDRX " PTE0 " ADDRX
" PTE1 " ADDRX " way %d\n",
__func__, T0, EPN, CMP, RPN, way);
}
#endif
/* Store this TLB */
ppc6xx_tlb_store(env, (uint32_t)(T0 & TARGET_PAGE_MASK),
way, is_code, CMP, RPN);
}
void do_load_74xx_tlb (int is_code)
{
target_ulong RPN, CMP, EPN;
int way;
RPN = env->spr[SPR_PTELO];
CMP = env->spr[SPR_PTEHI];
EPN = env->spr[SPR_TLBMISS] & ~0x3;
way = env->spr[SPR_TLBMISS] & 0x3;
#if defined (DEBUG_SOFTWARE_TLB)
if (loglevel != 0) {
fprintf(logfile, "%s: EPN " TDX " " ADDRX " PTE0 " ADDRX
" PTE1 " ADDRX " way %d\n",
__func__, T0, EPN, CMP, RPN, way);
}
#endif
/* Store this TLB */
ppc6xx_tlb_store(env, (uint32_t)(T0 & TARGET_PAGE_MASK),
way, is_code, CMP, RPN);
}
static always_inline target_ulong booke_tlb_to_page_size (int size)
{
return 1024 << (2 * size);
}
static always_inline int booke_page_size_to_tlb (target_ulong page_size)
{
int size;
switch (page_size) {
case 0x00000400UL:
size = 0x0;
break;
case 0x00001000UL:
size = 0x1;
break;
case 0x00004000UL:
size = 0x2;
break;
case 0x00010000UL:
size = 0x3;
break;
case 0x00040000UL:
size = 0x4;
break;
case 0x00100000UL:
size = 0x5;
break;
case 0x00400000UL:
size = 0x6;
break;
case 0x01000000UL:
size = 0x7;
break;
case 0x04000000UL:
size = 0x8;
break;
case 0x10000000UL:
size = 0x9;
break;
case 0x40000000UL:
size = 0xA;
break;
#if defined (TARGET_PPC64)
case 0x000100000000ULL:
size = 0xB;
break;
case 0x000400000000ULL:
size = 0xC;
break;
case 0x001000000000ULL:
size = 0xD;
break;
case 0x004000000000ULL:
size = 0xE;
break;
case 0x010000000000ULL:
size = 0xF;
break;
#endif
default:
size = -1;
break;
}
return size;
}
/* Helpers for 4xx TLB management */
void do_4xx_tlbre_lo (void)
{
ppcemb_tlb_t *tlb;
int size;
T0 &= 0x3F;
tlb = &env->tlb[T0].tlbe;
T0 = tlb->EPN;
if (tlb->prot & PAGE_VALID)
T0 |= 0x400;
size = booke_page_size_to_tlb(tlb->size);
if (size < 0 || size > 0x7)
size = 1;
T0 |= size << 7;
env->spr[SPR_40x_PID] = tlb->PID;
}
void do_4xx_tlbre_hi (void)
{
ppcemb_tlb_t *tlb;
T0 &= 0x3F;
tlb = &env->tlb[T0].tlbe;
T0 = tlb->RPN;
if (tlb->prot & PAGE_EXEC)
T0 |= 0x200;
if (tlb->prot & PAGE_WRITE)
T0 |= 0x100;
}
void do_4xx_tlbwe_hi (void)
{
ppcemb_tlb_t *tlb;
target_ulong page, end;
#if defined (DEBUG_SOFTWARE_TLB)
if (loglevel != 0) {
fprintf(logfile, "%s T0 " TDX " T1 " TDX "\n", __func__, T0, T1);
}
#endif
T0 &= 0x3F;
tlb = &env->tlb[T0].tlbe;
/* Invalidate previous TLB (if it's valid) */
if (tlb->prot & PAGE_VALID) {
end = tlb->EPN + tlb->size;
#if defined (DEBUG_SOFTWARE_TLB)
if (loglevel != 0) {
fprintf(logfile, "%s: invalidate old TLB %d start " ADDRX
" end " ADDRX "\n", __func__, (int)T0, tlb->EPN, end);
}
#endif
for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE)
tlb_flush_page(env, page);
}
tlb->size = booke_tlb_to_page_size((T1 >> 7) & 0x7);
/* We cannot handle TLB size < TARGET_PAGE_SIZE.
* If this ever occurs, one should use the ppcemb target instead
* of the ppc or ppc64 one
*/
if ((T1 & 0x40) && tlb->size < TARGET_PAGE_SIZE) {
cpu_abort(env, "TLB size " TARGET_FMT_lu " < %u "
"are not supported (%d)\n",
tlb->size, TARGET_PAGE_SIZE, (int)((T1 >> 7) & 0x7));
}
tlb->EPN = T1 & ~(tlb->size - 1);
if (T1 & 0x40)
tlb->prot |= PAGE_VALID;
else
tlb->prot &= ~PAGE_VALID;
if (T1 & 0x20) {
/* XXX: TO BE FIXED */
cpu_abort(env, "Little-endian TLB entries are not supported by now\n");
}
tlb->PID = env->spr[SPR_40x_PID]; /* PID */
tlb->attr = T1 & 0xFF;
#if defined (DEBUG_SOFTWARE_TLB)
if (loglevel != 0) {
fprintf(logfile, "%s: set up TLB %d RPN " PADDRX " EPN " ADDRX
" size " ADDRX " prot %c%c%c%c PID %d\n", __func__,
(int)T0, tlb->RPN, tlb->EPN, tlb->size,
tlb->prot & PAGE_READ ? 'r' : '-',
tlb->prot & PAGE_WRITE ? 'w' : '-',
tlb->prot & PAGE_EXEC ? 'x' : '-',
tlb->prot & PAGE_VALID ? 'v' : '-', (int)tlb->PID);
}
#endif
/* Invalidate new TLB (if valid) */
if (tlb->prot & PAGE_VALID) {
end = tlb->EPN + tlb->size;
#if defined (DEBUG_SOFTWARE_TLB)
if (loglevel != 0) {
fprintf(logfile, "%s: invalidate TLB %d start " ADDRX
" end " ADDRX "\n", __func__, (int)T0, tlb->EPN, end);
}
#endif
for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE)
tlb_flush_page(env, page);
}
}
void do_4xx_tlbwe_lo (void)
{
ppcemb_tlb_t *tlb;
#if defined (DEBUG_SOFTWARE_TLB)
if (loglevel != 0) {
fprintf(logfile, "%s T0 " TDX " T1 " TDX "\n", __func__, T0, T1);
}
#endif
T0 &= 0x3F;
tlb = &env->tlb[T0].tlbe;
tlb->RPN = T1 & 0xFFFFFC00;
tlb->prot = PAGE_READ;
if (T1 & 0x200)
tlb->prot |= PAGE_EXEC;
if (T1 & 0x100)
tlb->prot |= PAGE_WRITE;
#if defined (DEBUG_SOFTWARE_TLB)
if (loglevel != 0) {
fprintf(logfile, "%s: set up TLB %d RPN " PADDRX " EPN " ADDRX
" size " ADDRX " prot %c%c%c%c PID %d\n", __func__,
(int)T0, tlb->RPN, tlb->EPN, tlb->size,
tlb->prot & PAGE_READ ? 'r' : '-',
tlb->prot & PAGE_WRITE ? 'w' : '-',
tlb->prot & PAGE_EXEC ? 'x' : '-',
tlb->prot & PAGE_VALID ? 'v' : '-', (int)tlb->PID);
}
#endif
}
/* PowerPC 440 TLB management */
void do_440_tlbwe (int word)
{
ppcemb_tlb_t *tlb;
target_ulong EPN, RPN, size;
int do_flush_tlbs;
#if defined (DEBUG_SOFTWARE_TLB)
if (loglevel != 0) {
fprintf(logfile, "%s word %d T0 " TDX " T1 " TDX "\n",
__func__, word, T0, T1);
}
#endif
do_flush_tlbs = 0;
T0 &= 0x3F;
tlb = &env->tlb[T0].tlbe;
switch (word) {
default:
/* Just here to please gcc */
case 0:
EPN = T1 & 0xFFFFFC00;
if ((tlb->prot & PAGE_VALID) && EPN != tlb->EPN)
do_flush_tlbs = 1;
tlb->EPN = EPN;
size = booke_tlb_to_page_size((T1 >> 4) & 0xF);
if ((tlb->prot & PAGE_VALID) && tlb->size < size)
do_flush_tlbs = 1;
tlb->size = size;
tlb->attr &= ~0x1;
tlb->attr |= (T1 >> 8) & 1;
if (T1 & 0x200) {
tlb->prot |= PAGE_VALID;
} else {
if (tlb->prot & PAGE_VALID) {
tlb->prot &= ~PAGE_VALID;
do_flush_tlbs = 1;
}
}
tlb->PID = env->spr[SPR_440_MMUCR] & 0x000000FF;
if (do_flush_tlbs)
tlb_flush(env, 1);
break;
case 1:
RPN = T1 & 0xFFFFFC0F;
if ((tlb->prot & PAGE_VALID) && tlb->RPN != RPN)
tlb_flush(env, 1);
tlb->RPN = RPN;
break;
case 2:
tlb->attr = (tlb->attr & 0x1) | (T1 & 0x0000FF00);
tlb->prot = tlb->prot & PAGE_VALID;
if (T1 & 0x1)
tlb->prot |= PAGE_READ << 4;
if (T1 & 0x2)
tlb->prot |= PAGE_WRITE << 4;
if (T1 & 0x4)
tlb->prot |= PAGE_EXEC << 4;
if (T1 & 0x8)
tlb->prot |= PAGE_READ;
if (T1 & 0x10)
tlb->prot |= PAGE_WRITE;
if (T1 & 0x20)
tlb->prot |= PAGE_EXEC;
break;
}
}
void do_440_tlbre (int word)
{
ppcemb_tlb_t *tlb;
int size;
T0 &= 0x3F;
tlb = &env->tlb[T0].tlbe;
switch (word) {
default:
/* Just here to please gcc */
case 0:
T0 = tlb->EPN;
size = booke_page_size_to_tlb(tlb->size);
if (size < 0 || size > 0xF)
size = 1;
T0 |= size << 4;
if (tlb->attr & 0x1)
T0 |= 0x100;
if (tlb->prot & PAGE_VALID)
T0 |= 0x200;
env->spr[SPR_440_MMUCR] &= ~0x000000FF;
env->spr[SPR_440_MMUCR] |= tlb->PID;
break;
case 1:
T0 = tlb->RPN;
break;
case 2:
T0 = tlb->attr & ~0x1;
if (tlb->prot & (PAGE_READ << 4))
T0 |= 0x1;
if (tlb->prot & (PAGE_WRITE << 4))
T0 |= 0x2;
if (tlb->prot & (PAGE_EXEC << 4))
T0 |= 0x4;
if (tlb->prot & PAGE_READ)
T0 |= 0x8;
if (tlb->prot & PAGE_WRITE)
T0 |= 0x10;
if (tlb->prot & PAGE_EXEC)
T0 |= 0x20;
break;
}
}
#endif /* !CONFIG_USER_ONLY */
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