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fpu fixes (Jocelyn Mayer) - soft float support

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1335 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-03-13 17:01:22 +00:00
parent 4c2e770f37
commit 4ecc31906d
6 changed files with 180 additions and 157 deletions
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12
target-ppc/cpu.h
View File

@ -27,6 +27,8 @@
#include "config.h"
#include <setjmp.h>
#include "softfloat.h"
/* Instruction types */
enum {
PPC_NONE = 0x0000,
@ -94,7 +96,7 @@ typedef struct CPUPPCState {
/* general purpose registers */
uint32_t gpr[32];
/* floating point registers */
double fpr[32];
float64 fpr[32];
/* segment registers */
uint32_t sdr1;
uint32_t sr[16];
@ -119,9 +121,11 @@ typedef struct CPUPPCState {
uint32_t spr[1024];
/* qemu dedicated */
/* temporary float registers */
double ft0;
double ft1;
double ft2;
float64 ft0;
float64 ft1;
float64 ft2;
float_status fp_status;
int interrupt_request;
jmp_buf jmp_env;
int exception_index;

10
target-ppc/exec.h
View File

@ -32,9 +32,6 @@ register uint32_t T2 asm(AREG3);
#define FT0 (env->ft0)
#define FT1 (env->ft1)
#define FT2 (env->ft2)
#define FTS0 ((float)env->ft0)
#define FTS1 ((float)env->ft1)
#define FTS2 ((float)env->ft2)
#if defined (DEBUG_OP)
#define RETURN() __asm__ __volatile__("nop");
@ -137,17 +134,12 @@ void do_fctiw (void);
void do_fctiwz (void);
void do_fnmadd (void);
void do_fnmsub (void);
void do_fnmadds (void);
void do_fnmsubs (void);
void do_fsqrt (void);
void do_fsqrts (void);
void do_fres (void);
void do_fsqrte (void);
void do_frsqrte (void);
void do_fsel (void);
void do_fcmpu (void);
void do_fcmpo (void);
void do_fabs (void);
void do_fnabs (void);
void do_check_reservation (void);
void do_icbi (void);

3
target-ppc/helper.c
View File

@ -809,6 +809,7 @@ void do_interrupt (CPUState *env)
msr |= 0x00010000;
goto store_current;
case EXCP_NO_FP:
msr &= ~0xFFFF0000;
goto store_current;
case EXCP_DECR:
if (msr_ee == 0) {
@ -854,7 +855,6 @@ void do_interrupt (CPUState *env)
return;
case EXCP_RFI:
/* Restore user-mode state */
tb_flush(env);
#if defined (DEBUG_EXCEPTIONS)
if (msr_pr == 1)
printf("Return from exception => 0x%08x\n", (uint32_t)env->nip);
@ -887,7 +887,6 @@ void do_interrupt (CPUState *env)
env->nip = excp << 8;
env->exception_index = EXCP_NONE;
/* Invalidate all TLB as we may have changed translation mode */
tlb_flush(env, 1);
/* ensure that no TB jump will be modified as
the program flow was changed */
#ifdef __sparc__

74
target-ppc/op.c
View File

@ -32,10 +32,6 @@
#define FT1 (env->ft1)
#define FT2 (env->ft2)
#define FTS0 ((float)env->ft0)
#define FTS1 ((float)env->ft1)
#define FTS2 ((float)env->ft2)
#define PPC_OP(name) void glue(op_, name)(void)
#define REG 0
@ -1204,13 +1200,6 @@ PPC_OP(fadd)
RETURN();
}
/* fadds - fadds. */
PPC_OP(fadds)
{
FT0 = FTS0 + FTS1;
RETURN();
}
/* fsub - fsub. */
PPC_OP(fsub)
{
@ -1218,13 +1207,6 @@ PPC_OP(fsub)
RETURN();
}
/* fsubs - fsubs. */
PPC_OP(fsubs)
{
FT0 = FTS0 - FTS1;
RETURN();
}
/* fmul - fmul. */
PPC_OP(fmul)
{
@ -1232,24 +1214,11 @@ PPC_OP(fmul)
RETURN();
}
/* fmuls - fmuls. */
PPC_OP(fmuls)
{
FT0 = FTS0 * FTS1;
RETURN();
}
/* fdiv - fdiv. */
void do_fdiv (void);
PPC_OP(fdiv)
{
FT0 /= FT1;
RETURN();
}
/* fdivs - fdivs. */
PPC_OP(fdivs)
{
FT0 = FTS0 / FTS1;
do_fdiv();
RETURN();
}
@ -1260,13 +1229,6 @@ PPC_OP(fsqrt)
RETURN();
}
/* fsqrts - fsqrts. */
PPC_OP(fsqrts)
{
do_fsqrts();
RETURN();
}
/* fres - fres. */
PPC_OP(fres)
{
@ -1277,7 +1239,7 @@ PPC_OP(fres)
/* frsqrte - frsqrte. */
PPC_OP(frsqrte)
{
do_fsqrte();
do_frsqrte();
RETURN();
}
@ -1296,13 +1258,6 @@ PPC_OP(fmadd)
RETURN();
}
/* fmadds - fmadds. */
PPC_OP(fmadds)
{
FT0 = (FTS0 * FTS1) + FTS2;
RETURN();
}
/* fmsub - fmsub. */
PPC_OP(fmsub)
{
@ -1310,13 +1265,6 @@ PPC_OP(fmsub)
RETURN();
}
/* fmsubs - fmsubs. */
PPC_OP(fmsubs)
{
FT0 = (FTS0 * FTS1) - FTS2;
RETURN();
}
/* fnmadd - fnmadd. - fnmadds - fnmadds. */
PPC_OP(fnmadd)
{
@ -1324,13 +1272,6 @@ PPC_OP(fnmadd)
RETURN();
}
/* fnmadds - fnmadds. */
PPC_OP(fnmadds)
{
do_fnmadds();
RETURN();
}
/* fnmsub - fnmsub. */
PPC_OP(fnmsub)
{
@ -1338,13 +1279,6 @@ PPC_OP(fnmsub)
RETURN();
}
/* fnmsubs - fnmsubs. */
PPC_OP(fnmsubs)
{
do_fnmsubs();
RETURN();
}
/*** Floating-Point round & convert ***/
/* frsp - frsp. */
PPC_OP(frsp)
@ -1385,6 +1319,7 @@ PPC_OP(fcmpo)
/*** Floating-point move ***/
/* fabs */
void do_fabs (void);
PPC_OP(fabs)
{
do_fabs();
@ -1392,6 +1327,7 @@ PPC_OP(fabs)
}
/* fnabs */
void do_fnabs (void);
PPC_OP(fnabs)
{
do_fnabs();

143
target-ppc/op_helper.c
View File

@ -213,7 +213,7 @@ void do_store_fpscr (uint32_t mask)
uint32_t u[2];
} s;
} u;
int i;
int i, rnd_type;
u.d = FT0;
if (mask & 0x80)
@ -227,21 +227,23 @@ void do_store_fpscr (uint32_t mask)
switch (env->fpscr[0] & 0x3) {
case 0:
/* Best approximation (round to nearest) */
fesetround(FE_TONEAREST);
rnd_type = float_round_nearest_even;
break;
case 1:
/* Smaller magnitude (round toward zero) */
fesetround(FE_TOWARDZERO);
rnd_type = float_round_to_zero;
break;
case 2:
/* Round toward +infinite */
fesetround(FE_UPWARD);
rnd_type = float_round_up;
break;
default:
case 3:
/* Round toward -infinite */
fesetround(FE_DOWNWARD);
rnd_type = float_round_down;
break;
}
set_float_rounding_mode(rnd_type, &env->fp_status);
}
void do_fctiw (void)
@ -249,16 +251,14 @@ void do_fctiw (void)
union {
double d;
uint64_t i;
} *p = (void *)&FT1;
} p;
if (FT0 > (double)0x7FFFFFFF)
p->i = 0x7FFFFFFFULL << 32;
else if (FT0 < -(double)0x80000000)
p->i = 0x80000000ULL << 32;
else
p->i = 0;
p->i |= (uint32_t)FT0;
FT0 = p->d;
/* XXX: higher bits are not supposed to be significant.
* to make tests easier, return the same as a real PPC 750 (aka G3)
*/
p.i = float64_to_int32(FT0, &env->fp_status);
p.i |= 0xFFF80000ULL << 32;
FT0 = p.d;
}
void do_fctiwz (void)
@ -266,39 +266,36 @@ void do_fctiwz (void)
union {
double d;
uint64_t i;
} *p = (void *)&FT1;
int cround = fegetround();
} p;
fesetround(FE_TOWARDZERO);
if (FT0 > (double)0x7FFFFFFF)
p->i = 0x7FFFFFFFULL << 32;
else if (FT0 < -(double)0x80000000)
p->i = 0x80000000ULL << 32;
else
p->i = 0;
p->i |= (uint32_t)FT0;
FT0 = p->d;
fesetround(cround);
/* XXX: higher bits are not supposed to be significant.
* to make tests easier, return the same as a real PPC 750 (aka G3)
*/
p.i = float64_to_int32_round_to_zero(FT0, &env->fp_status);
p.i |= 0xFFF80000ULL << 32;
FT0 = p.d;
}
void do_fnmadd (void)
{
FT0 = -((FT0 * FT1) + FT2);
FT0 = (FT0 * FT1) + FT2;
if (!isnan(FT0))
FT0 = -FT0;
}
void do_fnmsub (void)
{
FT0 = -((FT0 * FT1) - FT2);
FT0 = (FT0 * FT1) - FT2;
if (!isnan(FT0))
FT0 = -FT0;
}
void do_fnmadds (void)
void do_fdiv (void)
{
FT0 = -((FTS0 * FTS1) + FTS2);
}
void do_fnmsubs (void)
{
FT0 = -((FTS0 * FTS1) - FTS2);
if (FT0 == -0.0 && FT1 == -0.0)
FT0 = 0.0 / 0.0;
else
FT0 /= FT1;
}
void do_fsqrt (void)
@ -306,27 +303,65 @@ void do_fsqrt (void)
FT0 = sqrt(FT0);
}
void do_fsqrts (void)
{
FT0 = (float)sqrt((float)FT0);
}
void do_fres (void)
{
FT0 = 1.0 / FT0;
union {
double d;
uint64_t i;
} p;
if (isnormal(FT0)) {
FT0 = (float)(1.0 / FT0);
} 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 (FT0 < 0.0) {
p.i = 0x8000000000000000ULL;
} else {
p.i = 0x0000000000000000ULL;
}
FT0 = p.d;
}
}
void do_fsqrte (void)
void do_frsqrte (void)
{
FT0 = 1.0 / sqrt(FT0);
union {
double d;
uint64_t i;
} p;
if (isnormal(FT0) && FT0 > 0.0) {
FT0 = (float)(1.0 / sqrt(FT0));
} else {
p.d = FT0;
if (p.i == 0x8000000000000000ULL) {
p.i = 0xFFF0000000000000ULL;
} else if (p.i == 0x0000000000000000ULL) {
p.i = 0x7FF0000000000000ULL;
} else if (isnan(FT0)) {
if (!(p.i & 0x0008000000000000ULL))
p.i |= 0x000FFFFFFFFFFFFFULL;
} else if (FT0 < 0) {
p.i = 0x7FF8000000000000ULL;
} else {
p.i = 0x0000000000000000ULL;
}
FT0 = p.d;
}
}
void do_fsel (void)
{
if (FT0 >= 0)
FT0 = FT2;
else
FT0 = FT1;
else
FT0 = FT2;
}
void do_fcmpu (void)
@ -371,12 +406,26 @@ void do_fcmpo (void)
void do_fabs (void)
{
FT0 = fabsl(FT0);
union {
double d;
uint64_t i;
} p;
p.d = FT0;
p.i &= ~0x8000000000000000ULL;
FT0 = p.d;
}
void do_fnabs (void)
{
FT0 = -fabsl(FT0);
union {
double d;
uint64_t i;
} p;
p.d = FT0;
p.i |= 0x8000000000000000ULL;
FT0 = p.d;
}
/* Instruction cache invalidation helper */

95
target-ppc/translate.c
View File

@ -740,6 +740,7 @@ __GEN_LOGICAL2(sraw, 0x18, 0x18);
GEN_HANDLER(srawi, 0x1F, 0x18, 0x19, 0x00000000, PPC_INTEGER)
{
gen_op_load_gpr_T0(rS(ctx->opcode));
if (SH(ctx->opcode) != 0)
gen_op_srawi(SH(ctx->opcode), MASK(32 - SH(ctx->opcode), 31));
if (Rc(ctx->opcode) != 0)
gen_op_set_Rc0();
@ -749,7 +750,7 @@ GEN_HANDLER(srawi, 0x1F, 0x18, 0x19, 0x00000000, PPC_INTEGER)
__GEN_LOGICAL2(srw, 0x18, 0x10);
/*** Floating-Point arithmetic ***/
#define _GEN_FLOAT_ACB(name, op1, op2) \
#define _GEN_FLOAT_ACB(name, op, op1, op2, isfloat) \
GEN_HANDLER(f##name, op1, op2, 0xFF, 0x00000000, PPC_FLOAT) \
{ \
if (!ctx->fpu_enabled) { \
@ -760,17 +761,20 @@ GEN_HANDLER(f##name, op1, op2, 0xFF, 0x00000000, PPC_FLOAT) \
gen_op_load_fpr_FT0(rA(ctx->opcode)); \
gen_op_load_fpr_FT1(rC(ctx->opcode)); \
gen_op_load_fpr_FT2(rB(ctx->opcode)); \
gen_op_f##name(); \
gen_op_f##op(); \
if (isfloat) { \
gen_op_frsp(); \
} \
gen_op_store_FT0_fpr(rD(ctx->opcode)); \
if (Rc(ctx->opcode)) \
gen_op_set_Rc1(); \
}
#define GEN_FLOAT_ACB(name, op2) \
_GEN_FLOAT_ACB(name, 0x3F, op2); \
_GEN_FLOAT_ACB(name##s, 0x3B, op2);
_GEN_FLOAT_ACB(name, name, 0x3F, op2, 0); \
_GEN_FLOAT_ACB(name##s, name, 0x3B, op2, 1);
#define _GEN_FLOAT_AB(name, op1, op2, inval) \
#define _GEN_FLOAT_AB(name, op, op1, op2, inval, isfloat) \
GEN_HANDLER(f##name, op1, op2, 0xFF, inval, PPC_FLOAT) \
{ \
if (!ctx->fpu_enabled) { \
@ -780,16 +784,19 @@ GEN_HANDLER(f##name, op1, op2, 0xFF, inval, PPC_FLOAT) \
gen_op_reset_scrfx(); \
gen_op_load_fpr_FT0(rA(ctx->opcode)); \
gen_op_load_fpr_FT1(rB(ctx->opcode)); \
gen_op_f##name(); \
gen_op_f##op(); \
if (isfloat) { \
gen_op_frsp(); \
} \
gen_op_store_FT0_fpr(rD(ctx->opcode)); \
if (Rc(ctx->opcode)) \
gen_op_set_Rc1(); \
}
#define GEN_FLOAT_AB(name, op2, inval) \
_GEN_FLOAT_AB(name, 0x3F, op2, inval); \
_GEN_FLOAT_AB(name##s, 0x3B, op2, inval);
_GEN_FLOAT_AB(name, name, 0x3F, op2, inval, 0); \
_GEN_FLOAT_AB(name##s, name, 0x3B, op2, inval, 1);
#define _GEN_FLOAT_AC(name, op1, op2, inval) \
#define _GEN_FLOAT_AC(name, op, op1, op2, inval, isfloat) \
GEN_HANDLER(f##name, op1, op2, 0xFF, inval, PPC_FLOAT) \
{ \
if (!ctx->fpu_enabled) { \
@ -799,14 +806,17 @@ GEN_HANDLER(f##name, op1, op2, 0xFF, inval, PPC_FLOAT) \
gen_op_reset_scrfx(); \
gen_op_load_fpr_FT0(rA(ctx->opcode)); \
gen_op_load_fpr_FT1(rC(ctx->opcode)); \
gen_op_f##name(); \
gen_op_f##op(); \
if (isfloat) { \
gen_op_frsp(); \
} \
gen_op_store_FT0_fpr(rD(ctx->opcode)); \
if (Rc(ctx->opcode)) \
gen_op_set_Rc1(); \
}
#define GEN_FLOAT_AC(name, op2, inval) \
_GEN_FLOAT_AC(name, 0x3F, op2, inval); \
_GEN_FLOAT_AC(name##s, 0x3B, op2, inval);
_GEN_FLOAT_AC(name, name, 0x3F, op2, inval, 0); \
_GEN_FLOAT_AC(name##s, name, 0x3B, op2, inval, 1);
#define GEN_FLOAT_B(name, op2, op3) \
GEN_HANDLER(f##name, 0x3F, op2, op3, 0x001F0000, PPC_FLOAT) \
@ -823,8 +833,8 @@ GEN_HANDLER(f##name, 0x3F, op2, op3, 0x001F0000, PPC_FLOAT) \
gen_op_set_Rc1(); \
}
#define GEN_FLOAT_BS(name, op2) \
GEN_HANDLER(f##name, 0x3F, op2, 0xFF, 0x001F07C0, PPC_FLOAT) \
#define GEN_FLOAT_BS(name, op1, op2) \
GEN_HANDLER(f##name, op1, op2, 0xFF, 0x001F07C0, PPC_FLOAT) \
{ \
if (!ctx->fpu_enabled) { \
RET_EXCP(ctx, EXCP_NO_FP, 0); \
@ -840,24 +850,24 @@ GEN_HANDLER(f##name, 0x3F, op2, 0xFF, 0x001F07C0, PPC_FLOAT) \
/* fadd - fadds */
GEN_FLOAT_AB(add, 0x15, 0x000007C0);
/* fdiv */
/* fdiv - fdivs */
GEN_FLOAT_AB(div, 0x12, 0x000007C0);
/* fmul */
/* fmul - fmuls */
GEN_FLOAT_AC(mul, 0x19, 0x0000F800);
/* fres */
GEN_FLOAT_BS(res, 0x18);
GEN_FLOAT_BS(res, 0x3B, 0x18);
/* frsqrte */
GEN_FLOAT_BS(rsqrte, 0x1A);
GEN_FLOAT_BS(rsqrte, 0x3F, 0x1A);
/* fsel */
_GEN_FLOAT_ACB(sel, 0x3F, 0x17);
/* fsub */
_GEN_FLOAT_ACB(sel, sel, 0x3F, 0x17, 0);
/* fsub - fsubs */
GEN_FLOAT_AB(sub, 0x14, 0x000007C0);
/* Optional: */
/* fsqrt */
GEN_FLOAT_BS(sqrt, 0x16);
GEN_FLOAT_BS(sqrt, 0x3F, 0x16);
GEN_HANDLER(fsqrts, 0x3B, 0x16, 0xFF, 0x001F07C0, PPC_FLOAT_OPT)
{
@ -867,20 +877,21 @@ GEN_HANDLER(fsqrts, 0x3B, 0x16, 0xFF, 0x001F07C0, PPC_FLOAT_OPT)
}
gen_op_reset_scrfx();
gen_op_load_fpr_FT0(rB(ctx->opcode));
gen_op_fsqrts();
gen_op_fsqrt();
gen_op_frsp();
gen_op_store_FT0_fpr(rD(ctx->opcode));
if (Rc(ctx->opcode))
gen_op_set_Rc1();
}
/*** Floating-Point multiply-and-add ***/
/* fmadd */
/* fmadd - fmadds */
GEN_FLOAT_ACB(madd, 0x1D);
/* fmsub */
/* fmsub - fmsubs */
GEN_FLOAT_ACB(msub, 0x1C);
/* fnmadd */
/* fnmadd - fnmadds */
GEN_FLOAT_ACB(nmadd, 0x1F);
/* fnmsub */
/* fnmsub - fnmsubs */
GEN_FLOAT_ACB(nmsub, 0x1E);
/*** Floating-Point round & convert ***/
@ -1426,6 +1437,10 @@ GEN_HANDLER(sync, 0x1F, 0x16, 0x12, 0x03FF0801, PPC_MEM)
GEN_HANDLER(l##width, opc, 0xFF, 0xFF, 0x00000000, PPC_INTEGER) \
{ \
uint32_t simm = SIMM(ctx->opcode); \
if (!ctx->fpu_enabled) { \
RET_EXCP(ctx, EXCP_NO_FP, 0); \
return; \
} \
if (rA(ctx->opcode) == 0) { \
gen_op_set_T0(simm); \
} else { \
@ -1441,6 +1456,10 @@ GEN_HANDLER(l##width, opc, 0xFF, 0xFF, 0x00000000, PPC_INTEGER) \
GEN_HANDLER(l##width##u, opc, 0xFF, 0xFF, 0x00000000, PPC_INTEGER) \
{ \
uint32_t simm = SIMM(ctx->opcode); \
if (!ctx->fpu_enabled) { \
RET_EXCP(ctx, EXCP_NO_FP, 0); \
return; \
} \
if (rA(ctx->opcode) == 0 || \
rA(ctx->opcode) == rD(ctx->opcode)) { \
RET_INVAL(ctx); \
@ -1457,6 +1476,10 @@ GEN_HANDLER(l##width##u, opc, 0xFF, 0xFF, 0x00000000, PPC_INTEGER) \
#define GEN_LDUXF(width, opc) \
GEN_HANDLER(l##width##ux, 0x1F, 0x17, opc, 0x00000001, PPC_INTEGER) \
{ \
if (!ctx->fpu_enabled) { \
RET_EXCP(ctx, EXCP_NO_FP, 0); \
return; \
} \
if (rA(ctx->opcode) == 0 || \
rA(ctx->opcode) == rD(ctx->opcode)) { \
RET_INVAL(ctx); \
@ -1473,6 +1496,10 @@ GEN_HANDLER(l##width##ux, 0x1F, 0x17, opc, 0x00000001, PPC_INTEGER) \
#define GEN_LDXF(width, opc2, opc3) \
GEN_HANDLER(l##width##x, 0x1F, opc2, opc3, 0x00000001, PPC_INTEGER) \
{ \
if (!ctx->fpu_enabled) { \
RET_EXCP(ctx, EXCP_NO_FP, 0); \
return; \
} \
if (rA(ctx->opcode) == 0) { \
gen_op_load_gpr_T0(rB(ctx->opcode)); \
} else { \
@ -1501,6 +1528,10 @@ GEN_LDFS(fs, 0x10);
GEN_HANDLER(st##width, opc, 0xFF, 0xFF, 0x00000000, PPC_INTEGER) \
{ \
uint32_t simm = SIMM(ctx->opcode); \
if (!ctx->fpu_enabled) { \
RET_EXCP(ctx, EXCP_NO_FP, 0); \
return; \
} \
if (rA(ctx->opcode) == 0) { \
gen_op_set_T0(simm); \
} else { \
@ -1516,6 +1547,10 @@ GEN_HANDLER(st##width, opc, 0xFF, 0xFF, 0x00000000, PPC_INTEGER) \
GEN_HANDLER(st##width##u, opc, 0xFF, 0xFF, 0x00000000, PPC_INTEGER) \
{ \
uint32_t simm = SIMM(ctx->opcode); \
if (!ctx->fpu_enabled) { \
RET_EXCP(ctx, EXCP_NO_FP, 0); \
return; \
} \
if (rA(ctx->opcode) == 0) { \
RET_INVAL(ctx); \
return; \
@ -1531,6 +1566,10 @@ GEN_HANDLER(st##width##u, opc, 0xFF, 0xFF, 0x00000000, PPC_INTEGER) \
#define GEN_STUXF(width, opc) \
GEN_HANDLER(st##width##ux, 0x1F, 0x17, opc, 0x00000001, PPC_INTEGER) \
{ \
if (!ctx->fpu_enabled) { \
RET_EXCP(ctx, EXCP_NO_FP, 0); \
return; \
} \
if (rA(ctx->opcode) == 0) { \
RET_INVAL(ctx); \
return; \
@ -1546,6 +1585,10 @@ GEN_HANDLER(st##width##ux, 0x1F, 0x17, opc, 0x00000001, PPC_INTEGER) \
#define GEN_STXF(width, opc2, opc3) \
GEN_HANDLER(st##width##x, 0x1F, opc2, opc3, 0x00000001, PPC_INTEGER) \
{ \
if (!ctx->fpu_enabled) { \
RET_EXCP(ctx, EXCP_NO_FP, 0); \
return; \
} \
if (rA(ctx->opcode) == 0) { \
gen_op_load_gpr_T0(rB(ctx->opcode)); \
} else { \