blob: e3fcb03c2667f4dfd1703f5cc93b97724d6d1478 [file] [log] [blame]
/*
* PowerPC emulation for qemu: main translation routines.
*
* Copyright (c) 2003-2007 Jocelyn Mayer
* Copyright (C) 2011 Freescale Semiconductor, Inc.
*
* 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 "disas/disas.h"
#include "tcg-op.h"
#include "qemu/host-utils.h"
#include "helper.h"
#define GEN_HELPER 1
#include "helper.h"
#define CPU_SINGLE_STEP 0x1
#define CPU_BRANCH_STEP 0x2
#define GDBSTUB_SINGLE_STEP 0x4
/* Include definitions for instructions classes and implementations flags */
//#define PPC_DEBUG_DISAS
//#define DO_PPC_STATISTICS
#ifdef PPC_DEBUG_DISAS
# define LOG_DISAS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__)
#else
# define LOG_DISAS(...) do { } while (0)
#endif
/*****************************************************************************/
/* Code translation helpers */
/* global register indexes */
static TCGv_ptr cpu_env;
static char cpu_reg_names[10*3 + 22*4 /* GPR */
#if !defined(TARGET_PPC64)
+ 10*4 + 22*5 /* SPE GPRh */
#endif
+ 10*4 + 22*5 /* FPR */
+ 2*(10*6 + 22*7) /* AVRh, AVRl */
+ 10*5 + 22*6 /* VSR */
+ 8*5 /* CRF */];
static TCGv cpu_gpr[32];
#if !defined(TARGET_PPC64)
static TCGv cpu_gprh[32];
#endif
static TCGv_i64 cpu_fpr[32];
static TCGv_i64 cpu_avrh[32], cpu_avrl[32];
static TCGv_i64 cpu_vsr[32];
static TCGv_i32 cpu_crf[8];
static TCGv cpu_nip;
static TCGv cpu_msr;
static TCGv cpu_ctr;
static TCGv cpu_lr;
#if defined(TARGET_PPC64)
static TCGv cpu_cfar;
#endif
static TCGv cpu_xer, cpu_so, cpu_ov, cpu_ca;
static TCGv cpu_reserve;
static TCGv cpu_fpscr;
static TCGv_i32 cpu_access_type;
#include "exec/gen-icount.h"
void ppc_translate_init(void)
{
int i;
char* p;
size_t cpu_reg_names_size;
static int done_init = 0;
if (done_init)
return;
cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
p = cpu_reg_names;
cpu_reg_names_size = sizeof(cpu_reg_names);
for (i = 0; i < 8; i++) {
snprintf(p, cpu_reg_names_size, "crf%d", i);
cpu_crf[i] = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUPPCState, crf[i]), p);
p += 5;
cpu_reg_names_size -= 5;
}
for (i = 0; i < 32; i++) {
snprintf(p, cpu_reg_names_size, "r%d", i);
cpu_gpr[i] = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUPPCState, gpr[i]), p);
p += (i < 10) ? 3 : 4;
cpu_reg_names_size -= (i < 10) ? 3 : 4;
#if !defined(TARGET_PPC64)
snprintf(p, cpu_reg_names_size, "r%dH", i);
cpu_gprh[i] = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUPPCState, gprh[i]), p);
p += (i < 10) ? 4 : 5;
cpu_reg_names_size -= (i < 10) ? 4 : 5;
#endif
snprintf(p, cpu_reg_names_size, "fp%d", i);
cpu_fpr[i] = tcg_global_mem_new_i64(TCG_AREG0,
offsetof(CPUPPCState, fpr[i]), p);
p += (i < 10) ? 4 : 5;
cpu_reg_names_size -= (i < 10) ? 4 : 5;
snprintf(p, cpu_reg_names_size, "avr%dH", i);
#ifdef HOST_WORDS_BIGENDIAN
cpu_avrh[i] = tcg_global_mem_new_i64(TCG_AREG0,
offsetof(CPUPPCState, avr[i].u64[0]), p);
#else
cpu_avrh[i] = tcg_global_mem_new_i64(TCG_AREG0,
offsetof(CPUPPCState, avr[i].u64[1]), p);
#endif
p += (i < 10) ? 6 : 7;
cpu_reg_names_size -= (i < 10) ? 6 : 7;
snprintf(p, cpu_reg_names_size, "avr%dL", i);
#ifdef HOST_WORDS_BIGENDIAN
cpu_avrl[i] = tcg_global_mem_new_i64(TCG_AREG0,
offsetof(CPUPPCState, avr[i].u64[1]), p);
#else
cpu_avrl[i] = tcg_global_mem_new_i64(TCG_AREG0,
offsetof(CPUPPCState, avr[i].u64[0]), p);
#endif
p += (i < 10) ? 6 : 7;
cpu_reg_names_size -= (i < 10) ? 6 : 7;
snprintf(p, cpu_reg_names_size, "vsr%d", i);
cpu_vsr[i] = tcg_global_mem_new_i64(TCG_AREG0,
offsetof(CPUPPCState, vsr[i]), p);
p += (i < 10) ? 5 : 6;
cpu_reg_names_size -= (i < 10) ? 5 : 6;
}
cpu_nip = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUPPCState, nip), "nip");
cpu_msr = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUPPCState, msr), "msr");
cpu_ctr = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUPPCState, ctr), "ctr");
cpu_lr = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUPPCState, lr), "lr");
#if defined(TARGET_PPC64)
cpu_cfar = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUPPCState, cfar), "cfar");
#endif
cpu_xer = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUPPCState, xer), "xer");
cpu_so = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUPPCState, so), "SO");
cpu_ov = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUPPCState, ov), "OV");
cpu_ca = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUPPCState, ca), "CA");
cpu_reserve = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUPPCState, reserve_addr),
"reserve_addr");
cpu_fpscr = tcg_global_mem_new(TCG_AREG0,
offsetof(CPUPPCState, fpscr), "fpscr");
cpu_access_type = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUPPCState, access_type), "access_type");
done_init = 1;
}
/* internal defines */
typedef struct DisasContext {
struct TranslationBlock *tb;
target_ulong nip;
uint32_t opcode;
uint32_t exception;
/* Routine used to access memory */
int mem_idx;
int access_type;
/* Translation flags */
int le_mode;
#if defined(TARGET_PPC64)
int sf_mode;
int has_cfar;
#endif
int fpu_enabled;
int altivec_enabled;
int vsx_enabled;
int spe_enabled;
ppc_spr_t *spr_cb; /* Needed to check rights for mfspr/mtspr */
int singlestep_enabled;
uint64_t insns_flags;
uint64_t insns_flags2;
} DisasContext;
/* True when active word size < size of target_long. */
#ifdef TARGET_PPC64
# define NARROW_MODE(C) (!(C)->sf_mode)
#else
# define NARROW_MODE(C) 0
#endif
struct opc_handler_t {
/* invalid bits for instruction 1 (Rc(opcode) == 0) */
uint32_t inval1;
/* invalid bits for instruction 2 (Rc(opcode) == 1) */
uint32_t inval2;
/* instruction type */
uint64_t type;
/* extended instruction type */
uint64_t type2;
/* handler */
void (*handler)(DisasContext *ctx);
#if defined(DO_PPC_STATISTICS) || defined(PPC_DUMP_CPU)
const char *oname;
#endif
#if defined(DO_PPC_STATISTICS)
uint64_t count;
#endif
};
static inline void gen_reset_fpstatus(void)
{
gen_helper_reset_fpstatus(cpu_env);
}
static inline void gen_compute_fprf(TCGv_i64 arg, int set_fprf, int set_rc)
{
TCGv_i32 t0 = tcg_temp_new_i32();
if (set_fprf != 0) {
/* This case might be optimized later */
tcg_gen_movi_i32(t0, 1);
gen_helper_compute_fprf(t0, cpu_env, arg, t0);
if (unlikely(set_rc)) {
tcg_gen_mov_i32(cpu_crf[1], t0);
}
gen_helper_float_check_status(cpu_env);
} else if (unlikely(set_rc)) {
/* We always need to compute fpcc */
tcg_gen_movi_i32(t0, 0);
gen_helper_compute_fprf(t0, cpu_env, arg, t0);
tcg_gen_mov_i32(cpu_crf[1], t0);
}
tcg_temp_free_i32(t0);
}
static inline void gen_set_access_type(DisasContext *ctx, int access_type)
{
if (ctx->access_type != access_type) {
tcg_gen_movi_i32(cpu_access_type, access_type);
ctx->access_type = access_type;
}
}
static inline void gen_update_nip(DisasContext *ctx, target_ulong nip)
{
if (NARROW_MODE(ctx)) {
nip = (uint32_t)nip;
}
tcg_gen_movi_tl(cpu_nip, nip);
}
static inline void gen_exception_err(DisasContext *ctx, uint32_t excp, uint32_t error)
{
TCGv_i32 t0, t1;
if (ctx->exception == POWERPC_EXCP_NONE) {
gen_update_nip(ctx, ctx->nip);
}
t0 = tcg_const_i32(excp);
t1 = tcg_const_i32(error);
gen_helper_raise_exception_err(cpu_env, t0, t1);
tcg_temp_free_i32(t0);
tcg_temp_free_i32(t1);
ctx->exception = (excp);
}
static inline void gen_exception(DisasContext *ctx, uint32_t excp)
{
TCGv_i32 t0;
if (ctx->exception == POWERPC_EXCP_NONE) {
gen_update_nip(ctx, ctx->nip);
}
t0 = tcg_const_i32(excp);
gen_helper_raise_exception(cpu_env, t0);
tcg_temp_free_i32(t0);
ctx->exception = (excp);
}
static inline void gen_debug_exception(DisasContext *ctx)
{
TCGv_i32 t0;
if ((ctx->exception != POWERPC_EXCP_BRANCH) &&
(ctx->exception != POWERPC_EXCP_SYNC)) {
gen_update_nip(ctx, ctx->nip);
}
t0 = tcg_const_i32(EXCP_DEBUG);
gen_helper_raise_exception(cpu_env, t0);
tcg_temp_free_i32(t0);
}
static inline void gen_inval_exception(DisasContext *ctx, uint32_t error)
{
gen_exception_err(ctx, POWERPC_EXCP_PROGRAM, POWERPC_EXCP_INVAL | error);
}
/* Stop translation */
static inline void gen_stop_exception(DisasContext *ctx)
{
gen_update_nip(ctx, ctx->nip);
ctx->exception = POWERPC_EXCP_STOP;
}
/* No need to update nip here, as execution flow will change */
static inline void gen_sync_exception(DisasContext *ctx)
{
ctx->exception = POWERPC_EXCP_SYNC;
}
#define GEN_HANDLER(name, opc1, opc2, opc3, inval, type) \
GEN_OPCODE(name, opc1, opc2, opc3, inval, type, PPC_NONE)
#define GEN_HANDLER_E(name, opc1, opc2, opc3, inval, type, type2) \
GEN_OPCODE(name, opc1, opc2, opc3, inval, type, type2)
#define GEN_HANDLER2(name, onam, opc1, opc2, opc3, inval, type) \
GEN_OPCODE2(name, onam, opc1, opc2, opc3, inval, type, PPC_NONE)
#define GEN_HANDLER2_E(name, onam, opc1, opc2, opc3, inval, type, type2) \
GEN_OPCODE2(name, onam, opc1, opc2, opc3, inval, type, type2)
typedef struct opcode_t {
unsigned char opc1, opc2, opc3;
#if HOST_LONG_BITS == 64 /* Explicitly align to 64 bits */
unsigned char pad[5];
#else
unsigned char pad[1];
#endif
opc_handler_t handler;
const char *oname;
} opcode_t;
/*****************************************************************************/
/*** Instruction decoding ***/
#define EXTRACT_HELPER(name, shift, nb) \
static inline uint32_t name(uint32_t opcode) \
{ \
return (opcode >> (shift)) & ((1 << (nb)) - 1); \
}
#define EXTRACT_SHELPER(name, shift, nb) \
static inline int32_t name(uint32_t opcode) \
{ \
return (int16_t)((opcode >> (shift)) & ((1 << (nb)) - 1)); \
}
#define EXTRACT_HELPER_SPLIT(name, shift1, nb1, shift2, nb2) \
static inline uint32_t name(uint32_t opcode) \
{ \
return (((opcode >> (shift1)) & ((1 << (nb1)) - 1)) << nb2) | \
((opcode >> (shift2)) & ((1 << (nb2)) - 1)); \
}
/* Opcode part 1 */
EXTRACT_HELPER(opc1, 26, 6);
/* Opcode part 2 */
EXTRACT_HELPER(opc2, 1, 5);
/* Opcode part 3 */
EXTRACT_HELPER(opc3, 6, 5);
/* Update Cr0 flags */
EXTRACT_HELPER(Rc, 0, 1);
/* Update Cr6 flags (Altivec) */
EXTRACT_HELPER(Rc21, 10, 1);
/* Destination */
EXTRACT_HELPER(rD, 21, 5);
/* Source */
EXTRACT_HELPER(rS, 21, 5);
/* First operand */
EXTRACT_HELPER(rA, 16, 5);
/* Second operand */
EXTRACT_HELPER(rB, 11, 5);
/* Third operand */
EXTRACT_HELPER(rC, 6, 5);
/*** Get CRn ***/
EXTRACT_HELPER(crfD, 23, 3);
EXTRACT_HELPER(crfS, 18, 3);
EXTRACT_HELPER(crbD, 21, 5);
EXTRACT_HELPER(crbA, 16, 5);
EXTRACT_HELPER(crbB, 11, 5);
/* SPR / TBL */
EXTRACT_HELPER(_SPR, 11, 10);
static inline uint32_t SPR(uint32_t opcode)
{
uint32_t sprn = _SPR(opcode);
return ((sprn >> 5) & 0x1F) | ((sprn & 0x1F) << 5);
}
/*** Get constants ***/
EXTRACT_HELPER(IMM, 12, 8);
/* 16 bits signed immediate value */
EXTRACT_SHELPER(SIMM, 0, 16);
/* 16 bits unsigned immediate value */
EXTRACT_HELPER(UIMM, 0, 16);
/* 5 bits signed immediate value */
EXTRACT_HELPER(SIMM5, 16, 5);
/* 5 bits signed immediate value */
EXTRACT_HELPER(UIMM5, 16, 5);
/* Bit count */
EXTRACT_HELPER(NB, 11, 5);
/* Shift count */
EXTRACT_HELPER(SH, 11, 5);
/* Vector shift count */
EXTRACT_HELPER(VSH, 6, 4);
/* Mask start */
EXTRACT_HELPER(MB, 6, 5);
/* Mask end */
EXTRACT_HELPER(ME, 1, 5);
/* Trap operand */
EXTRACT_HELPER(TO, 21, 5);
EXTRACT_HELPER(CRM, 12, 8);
EXTRACT_HELPER(SR, 16, 4);
/* mtfsf/mtfsfi */
EXTRACT_HELPER(FPBF, 23, 3);
EXTRACT_HELPER(FPIMM, 12, 4);
EXTRACT_HELPER(FPL, 25, 1);
EXTRACT_HELPER(FPFLM, 17, 8);
EXTRACT_HELPER(FPW, 16, 1);
/*** Jump target decoding ***/
/* Displacement */
EXTRACT_SHELPER(d, 0, 16);
/* Immediate address */
static inline target_ulong LI(uint32_t opcode)
{
return (opcode >> 0) & 0x03FFFFFC;
}
static inline uint32_t BD(uint32_t opcode)
{
return (opcode >> 0) & 0xFFFC;
}
EXTRACT_HELPER(BO, 21, 5);
EXTRACT_HELPER(BI, 16, 5);
/* Absolute/relative address */
EXTRACT_HELPER(AA, 1, 1);
/* Link */
EXTRACT_HELPER(LK, 0, 1);
/* Create a mask between <start> and <end> bits */
static inline target_ulong MASK(uint32_t start, uint32_t end)
{
target_ulong ret;
#if defined(TARGET_PPC64)
if (likely(start == 0)) {
ret = UINT64_MAX << (63 - end);
} else if (likely(end == 63)) {
ret = UINT64_MAX >> start;
}
#else
if (likely(start == 0)) {
ret = UINT32_MAX << (31 - end);
} else if (likely(end == 31)) {
ret = UINT32_MAX >> start;
}
#endif
else {
ret = (((target_ulong)(-1ULL)) >> (start)) ^
(((target_ulong)(-1ULL) >> (end)) >> 1);
if (unlikely(start > end))
return ~ret;
}
return ret;
}
EXTRACT_HELPER_SPLIT(xT, 0, 1, 21, 5);
EXTRACT_HELPER_SPLIT(xS, 0, 1, 21, 5);
EXTRACT_HELPER_SPLIT(xA, 2, 1, 16, 5);
EXTRACT_HELPER_SPLIT(xB, 1, 1, 11, 5);
EXTRACT_HELPER_SPLIT(xC, 3, 1, 6, 5);
EXTRACT_HELPER(DM, 8, 2);
EXTRACT_HELPER(UIM, 16, 2);
EXTRACT_HELPER(SHW, 8, 2);
/*****************************************************************************/
/* PowerPC instructions table */
#if defined(DO_PPC_STATISTICS)
#define GEN_OPCODE(name, op1, op2, op3, invl, _typ, _typ2) \
{ \
.opc1 = op1, \
.opc2 = op2, \
.opc3 = op3, \
.pad = { 0, }, \
.handler = { \
.inval1 = invl, \
.type = _typ, \
.type2 = _typ2, \
.handler = &gen_##name, \
.oname = stringify(name), \
}, \
.oname = stringify(name), \
}
#define GEN_OPCODE_DUAL(name, op1, op2, op3, invl1, invl2, _typ, _typ2) \
{ \
.opc1 = op1, \
.opc2 = op2, \
.opc3 = op3, \
.pad = { 0, }, \
.handler = { \
.inval1 = invl1, \
.inval2 = invl2, \
.type = _typ, \
.type2 = _typ2, \
.handler = &gen_##name, \
.oname = stringify(name), \
}, \
.oname = stringify(name), \
}
#define GEN_OPCODE2(name, onam, op1, op2, op3, invl, _typ, _typ2) \
{ \
.opc1 = op1, \
.opc2 = op2, \
.opc3 = op3, \
.pad = { 0, }, \
.handler = { \
.inval1 = invl, \
.type = _typ, \
.type2 = _typ2, \
.handler = &gen_##name, \
.oname = onam, \
}, \
.oname = onam, \
}
#else
#define GEN_OPCODE(name, op1, op2, op3, invl, _typ, _typ2) \
{ \
.opc1 = op1, \
.opc2 = op2, \
.opc3 = op3, \
.pad = { 0, }, \
.handler = { \
.inval1 = invl, \
.type = _typ, \
.type2 = _typ2, \
.handler = &gen_##name, \
}, \
.oname = stringify(name), \
}
#define GEN_OPCODE_DUAL(name, op1, op2, op3, invl1, invl2, _typ, _typ2) \
{ \
.opc1 = op1, \
.opc2 = op2, \
.opc3 = op3, \
.pad = { 0, }, \
.handler = { \
.inval1 = invl1, \
.inval2 = invl2, \
.type = _typ, \
.type2 = _typ2, \
.handler = &gen_##name, \
}, \
.oname = stringify(name), \
}
#define GEN_OPCODE2(name, onam, op1, op2, op3, invl, _typ, _typ2) \
{ \
.opc1 = op1, \
.opc2 = op2, \
.opc3 = op3, \
.pad = { 0, }, \
.handler = { \
.inval1 = invl, \
.type = _typ, \
.type2 = _typ2, \
.handler = &gen_##name, \
}, \
.oname = onam, \
}
#endif
/* SPR load/store helpers */
static inline void gen_load_spr(TCGv t, int reg)
{
tcg_gen_ld_tl(t, cpu_env, offsetof(CPUPPCState, spr[reg]));
}
static inline void gen_store_spr(int reg, TCGv t)
{
tcg_gen_st_tl(t, cpu_env, offsetof(CPUPPCState, spr[reg]));
}
/* Invalid instruction */
static void gen_invalid(DisasContext *ctx)
{
gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL);
}
static opc_handler_t invalid_handler = {
.inval1 = 0xFFFFFFFF,
.inval2 = 0xFFFFFFFF,
.type = PPC_NONE,
.type2 = PPC_NONE,
.handler = gen_invalid,
};
#if defined(TARGET_PPC64)
/* NOTE: as this time, the only use of is_user_mode() is in 64 bit code. And */
/* so the function is wrapped in the standard 64-bit ifdef in order to */
/* avoid compiler warnings in 32-bit implementations. */
static bool is_user_mode(DisasContext *ctx)
{
#if defined(CONFIG_USER_ONLY)
return true;
#else
return ctx->mem_idx == 0;
#endif
}
#endif
/*** Integer comparison ***/
static inline void gen_op_cmp(TCGv arg0, TCGv arg1, int s, int crf)
{
TCGv t0 = tcg_temp_new();
TCGv_i32 t1 = tcg_temp_new_i32();
tcg_gen_trunc_tl_i32(cpu_crf[crf], cpu_so);
tcg_gen_setcond_tl((s ? TCG_COND_LT: TCG_COND_LTU), t0, arg0, arg1);
tcg_gen_trunc_tl_i32(t1, t0);
tcg_gen_shli_i32(t1, t1, CRF_LT);
tcg_gen_or_i32(cpu_crf[crf], cpu_crf[crf], t1);
tcg_gen_setcond_tl((s ? TCG_COND_GT: TCG_COND_GTU), t0, arg0, arg1);
tcg_gen_trunc_tl_i32(t1, t0);
tcg_gen_shli_i32(t1, t1, CRF_GT);
tcg_gen_or_i32(cpu_crf[crf], cpu_crf[crf], t1);
tcg_gen_setcond_tl(TCG_COND_EQ, t0, arg0, arg1);
tcg_gen_trunc_tl_i32(t1, t0);
tcg_gen_shli_i32(t1, t1, CRF_EQ);
tcg_gen_or_i32(cpu_crf[crf], cpu_crf[crf], t1);
tcg_temp_free(t0);
tcg_temp_free_i32(t1);
}
static inline void gen_op_cmpi(TCGv arg0, target_ulong arg1, int s, int crf)
{
TCGv t0 = tcg_const_tl(arg1);
gen_op_cmp(arg0, t0, s, crf);
tcg_temp_free(t0);
}
static inline void gen_op_cmp32(TCGv arg0, TCGv arg1, int s, int crf)
{
TCGv t0, t1;
t0 = tcg_temp_new();
t1 = tcg_temp_new();
if (s) {
tcg_gen_ext32s_tl(t0, arg0);
tcg_gen_ext32s_tl(t1, arg1);
} else {
tcg_gen_ext32u_tl(t0, arg0);
tcg_gen_ext32u_tl(t1, arg1);
}
gen_op_cmp(t0, t1, s, crf);
tcg_temp_free(t1);
tcg_temp_free(t0);
}
static inline void gen_op_cmpi32(TCGv arg0, target_ulong arg1, int s, int crf)
{
TCGv t0 = tcg_const_tl(arg1);
gen_op_cmp32(arg0, t0, s, crf);
tcg_temp_free(t0);
}
static inline void gen_set_Rc0(DisasContext *ctx, TCGv reg)
{
if (NARROW_MODE(ctx)) {
gen_op_cmpi32(reg, 0, 1, 0);
} else {
gen_op_cmpi(reg, 0, 1, 0);
}
}
/* cmp */
static void gen_cmp(DisasContext *ctx)
{
if ((ctx->opcode & 0x00200000) && (ctx->insns_flags & PPC_64B)) {
gen_op_cmp(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)],
1, crfD(ctx->opcode));
} else {
gen_op_cmp32(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)],
1, crfD(ctx->opcode));
}
}
/* cmpi */
static void gen_cmpi(DisasContext *ctx)
{
if ((ctx->opcode & 0x00200000) && (ctx->insns_flags & PPC_64B)) {
gen_op_cmpi(cpu_gpr[rA(ctx->opcode)], SIMM(ctx->opcode),
1, crfD(ctx->opcode));
} else {
gen_op_cmpi32(cpu_gpr[rA(ctx->opcode)], SIMM(ctx->opcode),
1, crfD(ctx->opcode));
}
}
/* cmpl */
static void gen_cmpl(DisasContext *ctx)
{
if ((ctx->opcode & 0x00200000) && (ctx->insns_flags & PPC_64B)) {
gen_op_cmp(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)],
0, crfD(ctx->opcode));
} else {
gen_op_cmp32(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)],
0, crfD(ctx->opcode));
}
}
/* cmpli */
static void gen_cmpli(DisasContext *ctx)
{
if ((ctx->opcode & 0x00200000) && (ctx->insns_flags & PPC_64B)) {
gen_op_cmpi(cpu_gpr[rA(ctx->opcode)], UIMM(ctx->opcode),
0, crfD(ctx->opcode));
} else {
gen_op_cmpi32(cpu_gpr[rA(ctx->opcode)], UIMM(ctx->opcode),
0, crfD(ctx->opcode));
}
}
/* isel (PowerPC 2.03 specification) */
static void gen_isel(DisasContext *ctx)
{
int l1, l2;
uint32_t bi = rC(ctx->opcode);
uint32_t mask;
TCGv_i32 t0;
l1 = gen_new_label();
l2 = gen_new_label();
mask = 1 << (3 - (bi & 0x03));
t0 = tcg_temp_new_i32();
tcg_gen_andi_i32(t0, cpu_crf[bi >> 2], mask);
tcg_gen_brcondi_i32(TCG_COND_EQ, t0, 0, l1);
if (rA(ctx->opcode) == 0)
tcg_gen_movi_tl(cpu_gpr[rD(ctx->opcode)], 0);
else
tcg_gen_mov_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)]);
tcg_gen_br(l2);
gen_set_label(l1);
tcg_gen_mov_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
gen_set_label(l2);
tcg_temp_free_i32(t0);
}
/* cmpb: PowerPC 2.05 specification */
static void gen_cmpb(DisasContext *ctx)
{
gen_helper_cmpb(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)],
cpu_gpr[rB(ctx->opcode)]);
}
/*** Integer arithmetic ***/
static inline void gen_op_arith_compute_ov(DisasContext *ctx, TCGv arg0,
TCGv arg1, TCGv arg2, int sub)
{
TCGv t0 = tcg_temp_new();
tcg_gen_xor_tl(cpu_ov, arg0, arg2);
tcg_gen_xor_tl(t0, arg1, arg2);
if (sub) {
tcg_gen_and_tl(cpu_ov, cpu_ov, t0);
} else {
tcg_gen_andc_tl(cpu_ov, cpu_ov, t0);
}
tcg_temp_free(t0);
if (NARROW_MODE(ctx)) {
tcg_gen_ext32s_tl(cpu_ov, cpu_ov);
}
tcg_gen_shri_tl(cpu_ov, cpu_ov, TARGET_LONG_BITS - 1);
tcg_gen_or_tl(cpu_so, cpu_so, cpu_ov);
}
/* Common add function */
static inline void gen_op_arith_add(DisasContext *ctx, TCGv ret, TCGv arg1,
TCGv arg2, bool add_ca, bool compute_ca,
bool compute_ov, bool compute_rc0)
{
TCGv t0 = ret;
if (compute_ca || compute_ov) {
t0 = tcg_temp_new();
}
if (compute_ca) {
if (NARROW_MODE(ctx)) {
/* Caution: a non-obvious corner case of the spec is that we
must produce the *entire* 64-bit addition, but produce the
carry into bit 32. */
TCGv t1 = tcg_temp_new();
tcg_gen_xor_tl(t1, arg1, arg2); /* add without carry */
tcg_gen_add_tl(t0, arg1, arg2);
if (add_ca) {
tcg_gen_add_tl(t0, t0, cpu_ca);
}
tcg_gen_xor_tl(cpu_ca, t0, t1); /* bits changed w/ carry */
tcg_temp_free(t1);
tcg_gen_shri_tl(cpu_ca, cpu_ca, 32); /* extract bit 32 */
tcg_gen_andi_tl(cpu_ca, cpu_ca, 1);
} else {
TCGv zero = tcg_const_tl(0);
if (add_ca) {
tcg_gen_add2_tl(t0, cpu_ca, arg1, zero, cpu_ca, zero);
tcg_gen_add2_tl(t0, cpu_ca, t0, cpu_ca, arg2, zero);
} else {
tcg_gen_add2_tl(t0, cpu_ca, arg1, zero, arg2, zero);
}
tcg_temp_free(zero);
}
} else {
tcg_gen_add_tl(t0, arg1, arg2);
if (add_ca) {
tcg_gen_add_tl(t0, t0, cpu_ca);
}
}
if (compute_ov) {
gen_op_arith_compute_ov(ctx, t0, arg1, arg2, 0);
}
if (unlikely(compute_rc0)) {
gen_set_Rc0(ctx, t0);
}
if (!TCGV_EQUAL(t0, ret)) {
tcg_gen_mov_tl(ret, t0);
tcg_temp_free(t0);
}
}
/* Add functions with two operands */
#define GEN_INT_ARITH_ADD(name, opc3, add_ca, compute_ca, compute_ov) \
static void glue(gen_, name)(DisasContext *ctx) \
{ \
gen_op_arith_add(ctx, cpu_gpr[rD(ctx->opcode)], \
cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)], \
add_ca, compute_ca, compute_ov, Rc(ctx->opcode)); \
}
/* Add functions with one operand and one immediate */
#define GEN_INT_ARITH_ADD_CONST(name, opc3, const_val, \
add_ca, compute_ca, compute_ov) \
static void glue(gen_, name)(DisasContext *ctx) \
{ \
TCGv t0 = tcg_const_tl(const_val); \
gen_op_arith_add(ctx, cpu_gpr[rD(ctx->opcode)], \
cpu_gpr[rA(ctx->opcode)], t0, \
add_ca, compute_ca, compute_ov, Rc(ctx->opcode)); \
tcg_temp_free(t0); \
}
/* add add. addo addo. */
GEN_INT_ARITH_ADD(add, 0x08, 0, 0, 0)
GEN_INT_ARITH_ADD(addo, 0x18, 0, 0, 1)
/* addc addc. addco addco. */
GEN_INT_ARITH_ADD(addc, 0x00, 0, 1, 0)
GEN_INT_ARITH_ADD(addco, 0x10, 0, 1, 1)
/* adde adde. addeo addeo. */
GEN_INT_ARITH_ADD(adde, 0x04, 1, 1, 0)
GEN_INT_ARITH_ADD(addeo, 0x14, 1, 1, 1)
/* addme addme. addmeo addmeo. */
GEN_INT_ARITH_ADD_CONST(addme, 0x07, -1LL, 1, 1, 0)
GEN_INT_ARITH_ADD_CONST(addmeo, 0x17, -1LL, 1, 1, 1)
/* addze addze. addzeo addzeo.*/
GEN_INT_ARITH_ADD_CONST(addze, 0x06, 0, 1, 1, 0)
GEN_INT_ARITH_ADD_CONST(addzeo, 0x16, 0, 1, 1, 1)
/* addi */
static void gen_addi(DisasContext *ctx)
{
target_long simm = SIMM(ctx->opcode);
if (rA(ctx->opcode) == 0) {
/* li case */
tcg_gen_movi_tl(cpu_gpr[rD(ctx->opcode)], simm);
} else {
tcg_gen_addi_tl(cpu_gpr[rD(ctx->opcode)],
cpu_gpr[rA(ctx->opcode)], simm);
}
}
/* addic addic.*/
static inline void gen_op_addic(DisasContext *ctx, bool compute_rc0)
{
TCGv c = tcg_const_tl(SIMM(ctx->opcode));
gen_op_arith_add(ctx, cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
c, 0, 1, 0, compute_rc0);
tcg_temp_free(c);
}
static void gen_addic(DisasContext *ctx)
{
gen_op_addic(ctx, 0);
}
static void gen_addic_(DisasContext *ctx)
{
gen_op_addic(ctx, 1);
}
/* addis */
static void gen_addis(DisasContext *ctx)
{
target_long simm = SIMM(ctx->opcode);
if (rA(ctx->opcode) == 0) {
/* lis case */
tcg_gen_movi_tl(cpu_gpr[rD(ctx->opcode)], simm << 16);
} else {
tcg_gen_addi_tl(cpu_gpr[rD(ctx->opcode)],
cpu_gpr[rA(ctx->opcode)], simm << 16);
}
}
static inline void gen_op_arith_divw(DisasContext *ctx, TCGv ret, TCGv arg1,
TCGv arg2, int sign, int compute_ov)
{
int l1 = gen_new_label();
int l2 = gen_new_label();
TCGv_i32 t0 = tcg_temp_local_new_i32();
TCGv_i32 t1 = tcg_temp_local_new_i32();
tcg_gen_trunc_tl_i32(t0, arg1);
tcg_gen_trunc_tl_i32(t1, arg2);
tcg_gen_brcondi_i32(TCG_COND_EQ, t1, 0, l1);
if (sign) {
int l3 = gen_new_label();
tcg_gen_brcondi_i32(TCG_COND_NE, t1, -1, l3);
tcg_gen_brcondi_i32(TCG_COND_EQ, t0, INT32_MIN, l1);
gen_set_label(l3);
tcg_gen_div_i32(t0, t0, t1);
} else {
tcg_gen_divu_i32(t0, t0, t1);
}
if (compute_ov) {
tcg_gen_movi_tl(cpu_ov, 0);
}
tcg_gen_br(l2);
gen_set_label(l1);
if (sign) {
tcg_gen_sari_i32(t0, t0, 31);
} else {
tcg_gen_movi_i32(t0, 0);
}
if (compute_ov) {
tcg_gen_movi_tl(cpu_ov, 1);
tcg_gen_movi_tl(cpu_so, 1);
}
gen_set_label(l2);
tcg_gen_extu_i32_tl(ret, t0);
tcg_temp_free_i32(t0);
tcg_temp_free_i32(t1);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, ret);
}
/* Div functions */
#define GEN_INT_ARITH_DIVW(name, opc3, sign, compute_ov) \
static void glue(gen_, name)(DisasContext *ctx) \
{ \
gen_op_arith_divw(ctx, cpu_gpr[rD(ctx->opcode)], \
cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)], \
sign, compute_ov); \
}
/* divwu divwu. divwuo divwuo. */
GEN_INT_ARITH_DIVW(divwu, 0x0E, 0, 0);
GEN_INT_ARITH_DIVW(divwuo, 0x1E, 0, 1);
/* divw divw. divwo divwo. */
GEN_INT_ARITH_DIVW(divw, 0x0F, 1, 0);
GEN_INT_ARITH_DIVW(divwo, 0x1F, 1, 1);
/* div[wd]eu[o][.] */
#define GEN_DIVE(name, hlpr, compute_ov) \
static void gen_##name(DisasContext *ctx) \
{ \
TCGv_i32 t0 = tcg_const_i32(compute_ov); \
gen_helper_##hlpr(cpu_gpr[rD(ctx->opcode)], cpu_env, \
cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)], t0); \
tcg_temp_free_i32(t0); \
if (unlikely(Rc(ctx->opcode) != 0)) { \
gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]); \
} \
}
GEN_DIVE(divweu, divweu, 0);
GEN_DIVE(divweuo, divweu, 1);
GEN_DIVE(divwe, divwe, 0);
GEN_DIVE(divweo, divwe, 1);
#if defined(TARGET_PPC64)
static inline void gen_op_arith_divd(DisasContext *ctx, TCGv ret, TCGv arg1,
TCGv arg2, int sign, int compute_ov)
{
int l1 = gen_new_label();
int l2 = gen_new_label();
tcg_gen_brcondi_i64(TCG_COND_EQ, arg2, 0, l1);
if (sign) {
int l3 = gen_new_label();
tcg_gen_brcondi_i64(TCG_COND_NE, arg2, -1, l3);
tcg_gen_brcondi_i64(TCG_COND_EQ, arg1, INT64_MIN, l1);
gen_set_label(l3);
tcg_gen_div_i64(ret, arg1, arg2);
} else {
tcg_gen_divu_i64(ret, arg1, arg2);
}
if (compute_ov) {
tcg_gen_movi_tl(cpu_ov, 0);
}
tcg_gen_br(l2);
gen_set_label(l1);
if (sign) {
tcg_gen_sari_i64(ret, arg1, 63);
} else {
tcg_gen_movi_i64(ret, 0);
}
if (compute_ov) {
tcg_gen_movi_tl(cpu_ov, 1);
tcg_gen_movi_tl(cpu_so, 1);
}
gen_set_label(l2);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, ret);
}
#define GEN_INT_ARITH_DIVD(name, opc3, sign, compute_ov) \
static void glue(gen_, name)(DisasContext *ctx) \
{ \
gen_op_arith_divd(ctx, cpu_gpr[rD(ctx->opcode)], \
cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)], \
sign, compute_ov); \
}
/* divwu divwu. divwuo divwuo. */
GEN_INT_ARITH_DIVD(divdu, 0x0E, 0, 0);
GEN_INT_ARITH_DIVD(divduo, 0x1E, 0, 1);
/* divw divw. divwo divwo. */
GEN_INT_ARITH_DIVD(divd, 0x0F, 1, 0);
GEN_INT_ARITH_DIVD(divdo, 0x1F, 1, 1);
GEN_DIVE(divdeu, divdeu, 0);
GEN_DIVE(divdeuo, divdeu, 1);
GEN_DIVE(divde, divde, 0);
GEN_DIVE(divdeo, divde, 1);
#endif
/* mulhw mulhw. */
static void gen_mulhw(DisasContext *ctx)
{
TCGv_i32 t0 = tcg_temp_new_i32();
TCGv_i32 t1 = tcg_temp_new_i32();
tcg_gen_trunc_tl_i32(t0, cpu_gpr[rA(ctx->opcode)]);
tcg_gen_trunc_tl_i32(t1, cpu_gpr[rB(ctx->opcode)]);
tcg_gen_muls2_i32(t0, t1, t0, t1);
tcg_gen_extu_i32_tl(cpu_gpr[rD(ctx->opcode)], t1);
tcg_temp_free_i32(t0);
tcg_temp_free_i32(t1);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
}
/* mulhwu mulhwu. */
static void gen_mulhwu(DisasContext *ctx)
{
TCGv_i32 t0 = tcg_temp_new_i32();
TCGv_i32 t1 = tcg_temp_new_i32();
tcg_gen_trunc_tl_i32(t0, cpu_gpr[rA(ctx->opcode)]);
tcg_gen_trunc_tl_i32(t1, cpu_gpr[rB(ctx->opcode)]);
tcg_gen_mulu2_i32(t0, t1, t0, t1);
tcg_gen_extu_i32_tl(cpu_gpr[rD(ctx->opcode)], t1);
tcg_temp_free_i32(t0);
tcg_temp_free_i32(t1);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
}
/* mullw mullw. */
static void gen_mullw(DisasContext *ctx)
{
tcg_gen_mul_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
cpu_gpr[rB(ctx->opcode)]);
tcg_gen_ext32s_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rD(ctx->opcode)]);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
}
/* mullwo mullwo. */
static void gen_mullwo(DisasContext *ctx)
{
TCGv_i32 t0 = tcg_temp_new_i32();
TCGv_i32 t1 = tcg_temp_new_i32();
tcg_gen_trunc_tl_i32(t0, cpu_gpr[rA(ctx->opcode)]);
tcg_gen_trunc_tl_i32(t1, cpu_gpr[rB(ctx->opcode)]);
tcg_gen_muls2_i32(t0, t1, t0, t1);
tcg_gen_ext_i32_tl(cpu_gpr[rD(ctx->opcode)], t0);
tcg_gen_sari_i32(t0, t0, 31);
tcg_gen_setcond_i32(TCG_COND_NE, t0, t0, t1);
tcg_gen_extu_i32_tl(cpu_ov, t0);
tcg_gen_or_tl(cpu_so, cpu_so, cpu_ov);
tcg_temp_free_i32(t0);
tcg_temp_free_i32(t1);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
}
/* mulli */
static void gen_mulli(DisasContext *ctx)
{
tcg_gen_muli_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
SIMM(ctx->opcode));
}
#if defined(TARGET_PPC64)
/* mulhd mulhd. */
static void gen_mulhd(DisasContext *ctx)
{
TCGv lo = tcg_temp_new();
tcg_gen_muls2_tl(lo, cpu_gpr[rD(ctx->opcode)],
cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
tcg_temp_free(lo);
if (unlikely(Rc(ctx->opcode) != 0)) {
gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
}
}
/* mulhdu mulhdu. */
static void gen_mulhdu(DisasContext *ctx)
{
TCGv lo = tcg_temp_new();
tcg_gen_mulu2_tl(lo, cpu_gpr[rD(ctx->opcode)],
cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
tcg_temp_free(lo);
if (unlikely(Rc(ctx->opcode) != 0)) {
gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
}
}
/* mulld mulld. */
static void gen_mulld(DisasContext *ctx)
{
tcg_gen_mul_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
cpu_gpr[rB(ctx->opcode)]);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
}
/* mulldo mulldo. */
static void gen_mulldo(DisasContext *ctx)
{
gen_helper_mulldo(cpu_gpr[rD(ctx->opcode)], cpu_env,
cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
if (unlikely(Rc(ctx->opcode) != 0)) {
gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
}
}
#endif
/* Common subf function */
static inline void gen_op_arith_subf(DisasContext *ctx, TCGv ret, TCGv arg1,
TCGv arg2, bool add_ca, bool compute_ca,
bool compute_ov, bool compute_rc0)
{
TCGv t0 = ret;
if (compute_ca || compute_ov) {
t0 = tcg_temp_new();
}
if (compute_ca) {
/* dest = ~arg1 + arg2 [+ ca]. */
if (NARROW_MODE(ctx)) {
/* Caution: a non-obvious corner case of the spec is that we
must produce the *entire* 64-bit addition, but produce the
carry into bit 32. */
TCGv inv1 = tcg_temp_new();
TCGv t1 = tcg_temp_new();
tcg_gen_not_tl(inv1, arg1);
if (add_ca) {
tcg_gen_add_tl(t0, arg2, cpu_ca);
} else {
tcg_gen_addi_tl(t0, arg2, 1);
}
tcg_gen_xor_tl(t1, arg2, inv1); /* add without carry */
tcg_gen_add_tl(t0, t0, inv1);
tcg_gen_xor_tl(cpu_ca, t0, t1); /* bits changes w/ carry */
tcg_temp_free(t1);
tcg_gen_shri_tl(cpu_ca, cpu_ca, 32); /* extract bit 32 */
tcg_gen_andi_tl(cpu_ca, cpu_ca, 1);
} else if (add_ca) {
TCGv zero, inv1 = tcg_temp_new();
tcg_gen_not_tl(inv1, arg1);
zero = tcg_const_tl(0);
tcg_gen_add2_tl(t0, cpu_ca, arg2, zero, cpu_ca, zero);
tcg_gen_add2_tl(t0, cpu_ca, t0, cpu_ca, inv1, zero);
tcg_temp_free(zero);
tcg_temp_free(inv1);
} else {
tcg_gen_setcond_tl(TCG_COND_GEU, cpu_ca, arg2, arg1);
tcg_gen_sub_tl(t0, arg2, arg1);
}
} else if (add_ca) {
/* Since we're ignoring carry-out, we can simplify the
standard ~arg1 + arg2 + ca to arg2 - arg1 + ca - 1. */
tcg_gen_sub_tl(t0, arg2, arg1);
tcg_gen_add_tl(t0, t0, cpu_ca);
tcg_gen_subi_tl(t0, t0, 1);
} else {
tcg_gen_sub_tl(t0, arg2, arg1);
}
if (compute_ov) {
gen_op_arith_compute_ov(ctx, t0, arg1, arg2, 1);
}
if (unlikely(compute_rc0)) {
gen_set_Rc0(ctx, t0);
}
if (!TCGV_EQUAL(t0, ret)) {
tcg_gen_mov_tl(ret, t0);
tcg_temp_free(t0);
}
}
/* Sub functions with Two operands functions */
#define GEN_INT_ARITH_SUBF(name, opc3, add_ca, compute_ca, compute_ov) \
static void glue(gen_, name)(DisasContext *ctx) \
{ \
gen_op_arith_subf(ctx, cpu_gpr[rD(ctx->opcode)], \
cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)], \
add_ca, compute_ca, compute_ov, Rc(ctx->opcode)); \
}
/* Sub functions with one operand and one immediate */
#define GEN_INT_ARITH_SUBF_CONST(name, opc3, const_val, \
add_ca, compute_ca, compute_ov) \
static void glue(gen_, name)(DisasContext *ctx) \
{ \
TCGv t0 = tcg_const_tl(const_val); \
gen_op_arith_subf(ctx, cpu_gpr[rD(ctx->opcode)], \
cpu_gpr[rA(ctx->opcode)], t0, \
add_ca, compute_ca, compute_ov, Rc(ctx->opcode)); \
tcg_temp_free(t0); \
}
/* subf subf. subfo subfo. */
GEN_INT_ARITH_SUBF(subf, 0x01, 0, 0, 0)
GEN_INT_ARITH_SUBF(subfo, 0x11, 0, 0, 1)
/* subfc subfc. subfco subfco. */
GEN_INT_ARITH_SUBF(subfc, 0x00, 0, 1, 0)
GEN_INT_ARITH_SUBF(subfco, 0x10, 0, 1, 1)
/* subfe subfe. subfeo subfo. */
GEN_INT_ARITH_SUBF(subfe, 0x04, 1, 1, 0)
GEN_INT_ARITH_SUBF(subfeo, 0x14, 1, 1, 1)
/* subfme subfme. subfmeo subfmeo. */
GEN_INT_ARITH_SUBF_CONST(subfme, 0x07, -1LL, 1, 1, 0)
GEN_INT_ARITH_SUBF_CONST(subfmeo, 0x17, -1LL, 1, 1, 1)
/* subfze subfze. subfzeo subfzeo.*/
GEN_INT_ARITH_SUBF_CONST(subfze, 0x06, 0, 1, 1, 0)
GEN_INT_ARITH_SUBF_CONST(subfzeo, 0x16, 0, 1, 1, 1)
/* subfic */
static void gen_subfic(DisasContext *ctx)
{
TCGv c = tcg_const_tl(SIMM(ctx->opcode));
gen_op_arith_subf(ctx, cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
c, 0, 1, 0, 0);
tcg_temp_free(c);
}
/* neg neg. nego nego. */
static inline void gen_op_arith_neg(DisasContext *ctx, bool compute_ov)
{
TCGv zero = tcg_const_tl(0);
gen_op_arith_subf(ctx, cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
zero, 0, 0, compute_ov, Rc(ctx->opcode));
tcg_temp_free(zero);
}
static void gen_neg(DisasContext *ctx)
{
gen_op_arith_neg(ctx, 0);
}
static void gen_nego(DisasContext *ctx)
{
gen_op_arith_neg(ctx, 1);
}
/*** Integer logical ***/
#define GEN_LOGICAL2(name, tcg_op, opc, type) \
static void glue(gen_, name)(DisasContext *ctx) \
{ \
tcg_op(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], \
cpu_gpr[rB(ctx->opcode)]); \
if (unlikely(Rc(ctx->opcode) != 0)) \
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]); \
}
#define GEN_LOGICAL1(name, tcg_op, opc, type) \
static void glue(gen_, name)(DisasContext *ctx) \
{ \
tcg_op(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]); \
if (unlikely(Rc(ctx->opcode) != 0)) \
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]); \
}
/* and & and. */
GEN_LOGICAL2(and, tcg_gen_and_tl, 0x00, PPC_INTEGER);
/* andc & andc. */
GEN_LOGICAL2(andc, tcg_gen_andc_tl, 0x01, PPC_INTEGER);
/* andi. */
static void gen_andi_(DisasContext *ctx)
{
tcg_gen_andi_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], UIMM(ctx->opcode));
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
/* andis. */
static void gen_andis_(DisasContext *ctx)
{
tcg_gen_andi_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], UIMM(ctx->opcode) << 16);
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
/* cntlzw */
static void gen_cntlzw(DisasContext *ctx)
{
gen_helper_cntlzw(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
/* eqv & eqv. */
GEN_LOGICAL2(eqv, tcg_gen_eqv_tl, 0x08, PPC_INTEGER);
/* extsb & extsb. */
GEN_LOGICAL1(extsb, tcg_gen_ext8s_tl, 0x1D, PPC_INTEGER);
/* extsh & extsh. */
GEN_LOGICAL1(extsh, tcg_gen_ext16s_tl, 0x1C, PPC_INTEGER);
/* nand & nand. */
GEN_LOGICAL2(nand, tcg_gen_nand_tl, 0x0E, PPC_INTEGER);
/* nor & nor. */
GEN_LOGICAL2(nor, tcg_gen_nor_tl, 0x03, PPC_INTEGER);
/* or & or. */
static void gen_or(DisasContext *ctx)
{
int rs, ra, rb;
rs = rS(ctx->opcode);
ra = rA(ctx->opcode);
rb = rB(ctx->opcode);
/* Optimisation for mr. ri case */
if (rs != ra || rs != rb) {
if (rs != rb)
tcg_gen_or_tl(cpu_gpr[ra], cpu_gpr[rs], cpu_gpr[rb]);
else
tcg_gen_mov_tl(cpu_gpr[ra], cpu_gpr[rs]);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[ra]);
} else if (unlikely(Rc(ctx->opcode) != 0)) {
gen_set_Rc0(ctx, cpu_gpr[rs]);
#if defined(TARGET_PPC64)
} else {
int prio = 0;
switch (rs) {
case 1:
/* Set process priority to low */
prio = 2;
break;
case 6:
/* Set process priority to medium-low */
prio = 3;
break;
case 2:
/* Set process priority to normal */
prio = 4;
break;
#if !defined(CONFIG_USER_ONLY)
case 31:
if (ctx->mem_idx > 0) {
/* Set process priority to very low */
prio = 1;
}
break;
case 5:
if (ctx->mem_idx > 0) {
/* Set process priority to medium-hight */
prio = 5;
}
break;
case 3:
if (ctx->mem_idx > 0) {
/* Set process priority to high */
prio = 6;
}
break;
case 7:
if (ctx->mem_idx > 1) {
/* Set process priority to very high */
prio = 7;
}
break;
#endif
default:
/* nop */
break;
}
if (prio) {
TCGv t0 = tcg_temp_new();
gen_load_spr(t0, SPR_PPR);
tcg_gen_andi_tl(t0, t0, ~0x001C000000000000ULL);
tcg_gen_ori_tl(t0, t0, ((uint64_t)prio) << 50);
gen_store_spr(SPR_PPR, t0);
tcg_temp_free(t0);
}
#endif
}
}
/* orc & orc. */
GEN_LOGICAL2(orc, tcg_gen_orc_tl, 0x0C, PPC_INTEGER);
/* xor & xor. */
static void gen_xor(DisasContext *ctx)
{
/* Optimisation for "set to zero" case */
if (rS(ctx->opcode) != rB(ctx->opcode))
tcg_gen_xor_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
else
tcg_gen_movi_tl(cpu_gpr[rA(ctx->opcode)], 0);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
/* ori */
static void gen_ori(DisasContext *ctx)
{
target_ulong uimm = UIMM(ctx->opcode);
if (rS(ctx->opcode) == rA(ctx->opcode) && uimm == 0) {
/* NOP */
/* XXX: should handle special NOPs for POWER series */
return;
}
tcg_gen_ori_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], uimm);
}
/* oris */
static void gen_oris(DisasContext *ctx)
{
target_ulong uimm = UIMM(ctx->opcode);
if (rS(ctx->opcode) == rA(ctx->opcode) && uimm == 0) {
/* NOP */
return;
}
tcg_gen_ori_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], uimm << 16);
}
/* xori */
static void gen_xori(DisasContext *ctx)
{
target_ulong uimm = UIMM(ctx->opcode);
if (rS(ctx->opcode) == rA(ctx->opcode) && uimm == 0) {
/* NOP */
return;
}
tcg_gen_xori_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], uimm);
}
/* xoris */
static void gen_xoris(DisasContext *ctx)
{
target_ulong uimm = UIMM(ctx->opcode);
if (rS(ctx->opcode) == rA(ctx->opcode) && uimm == 0) {
/* NOP */
return;
}
tcg_gen_xori_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], uimm << 16);
}
/* popcntb : PowerPC 2.03 specification */
static void gen_popcntb(DisasContext *ctx)
{
gen_helper_popcntb(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
}
static void gen_popcntw(DisasContext *ctx)
{
gen_helper_popcntw(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
}
#if defined(TARGET_PPC64)
/* popcntd: PowerPC 2.06 specification */
static void gen_popcntd(DisasContext *ctx)
{
gen_helper_popcntd(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
}
#endif
/* prtyw: PowerPC 2.05 specification */
static void gen_prtyw(DisasContext *ctx)
{
TCGv ra = cpu_gpr[rA(ctx->opcode)];
TCGv rs = cpu_gpr[rS(ctx->opcode)];
TCGv t0 = tcg_temp_new();
tcg_gen_shri_tl(t0, rs, 16);
tcg_gen_xor_tl(ra, rs, t0);
tcg_gen_shri_tl(t0, ra, 8);
tcg_gen_xor_tl(ra, ra, t0);
tcg_gen_andi_tl(ra, ra, (target_ulong)0x100000001ULL);
tcg_temp_free(t0);
}
#if defined(TARGET_PPC64)
/* prtyd: PowerPC 2.05 specification */
static void gen_prtyd(DisasContext *ctx)
{
TCGv ra = cpu_gpr[rA(ctx->opcode)];
TCGv rs = cpu_gpr[rS(ctx->opcode)];
TCGv t0 = tcg_temp_new();
tcg_gen_shri_tl(t0, rs, 32);
tcg_gen_xor_tl(ra, rs, t0);
tcg_gen_shri_tl(t0, ra, 16);
tcg_gen_xor_tl(ra, ra, t0);
tcg_gen_shri_tl(t0, ra, 8);
tcg_gen_xor_tl(ra, ra, t0);
tcg_gen_andi_tl(ra, ra, 1);
tcg_temp_free(t0);
}
#endif
#if defined(TARGET_PPC64)
/* bpermd */
static void gen_bpermd(DisasContext *ctx)
{
gen_helper_bpermd(cpu_gpr[rA(ctx->opcode)],
cpu_gpr[rS(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
}
#endif
#if defined(TARGET_PPC64)
/* extsw & extsw. */
GEN_LOGICAL1(extsw, tcg_gen_ext32s_tl, 0x1E, PPC_64B);
/* cntlzd */
static void gen_cntlzd(DisasContext *ctx)
{
gen_helper_cntlzd(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
#endif
/*** Integer rotate ***/
/* rlwimi & rlwimi. */
static void gen_rlwimi(DisasContext *ctx)
{
uint32_t mb, me, sh;
mb = MB(ctx->opcode);
me = ME(ctx->opcode);
sh = SH(ctx->opcode);
if (likely(sh == 0 && mb == 0 && me == 31)) {
tcg_gen_ext32u_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
} else {
target_ulong mask;
TCGv t1;
TCGv t0 = tcg_temp_new();
#if defined(TARGET_PPC64)
TCGv_i32 t2 = tcg_temp_new_i32();
tcg_gen_trunc_i64_i32(t2, cpu_gpr[rS(ctx->opcode)]);
tcg_gen_rotli_i32(t2, t2, sh);
tcg_gen_extu_i32_i64(t0, t2);
tcg_temp_free_i32(t2);
#else
tcg_gen_rotli_i32(t0, cpu_gpr[rS(ctx->opcode)], sh);
#endif
#if defined(TARGET_PPC64)
mb += 32;
me += 32;
#endif
mask = MASK(mb, me);
t1 = tcg_temp_new();
tcg_gen_andi_tl(t0, t0, mask);
tcg_gen_andi_tl(t1, cpu_gpr[rA(ctx->opcode)], ~mask);
tcg_gen_or_tl(cpu_gpr[rA(ctx->opcode)], t0, t1);
tcg_temp_free(t0);
tcg_temp_free(t1);
}
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
/* rlwinm & rlwinm. */
static void gen_rlwinm(DisasContext *ctx)
{
uint32_t mb, me, sh;
sh = SH(ctx->opcode);
mb = MB(ctx->opcode);
me = ME(ctx->opcode);
if (likely(mb == 0 && me == (31 - sh))) {
if (likely(sh == 0)) {
tcg_gen_ext32u_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
} else {
TCGv t0 = tcg_temp_new();
tcg_gen_ext32u_tl(t0, cpu_gpr[rS(ctx->opcode)]);
tcg_gen_shli_tl(t0, t0, sh);
tcg_gen_ext32u_tl(cpu_gpr[rA(ctx->opcode)], t0);
tcg_temp_free(t0);
}
} else if (likely(sh != 0 && me == 31 && sh == (32 - mb))) {
TCGv t0 = tcg_temp_new();
tcg_gen_ext32u_tl(t0, cpu_gpr[rS(ctx->opcode)]);
tcg_gen_shri_tl(t0, t0, mb);
tcg_gen_ext32u_tl(cpu_gpr[rA(ctx->opcode)], t0);
tcg_temp_free(t0);
} else {
TCGv t0 = tcg_temp_new();
#if defined(TARGET_PPC64)
TCGv_i32 t1 = tcg_temp_new_i32();
tcg_gen_trunc_i64_i32(t1, cpu_gpr[rS(ctx->opcode)]);
tcg_gen_rotli_i32(t1, t1, sh);
tcg_gen_extu_i32_i64(t0, t1);
tcg_temp_free_i32(t1);
#else
tcg_gen_rotli_i32(t0, cpu_gpr[rS(ctx->opcode)], sh);
#endif
#if defined(TARGET_PPC64)
mb += 32;
me += 32;
#endif
tcg_gen_andi_tl(cpu_gpr[rA(ctx->opcode)], t0, MASK(mb, me));
tcg_temp_free(t0);
}
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
/* rlwnm & rlwnm. */
static void gen_rlwnm(DisasContext *ctx)
{
uint32_t mb, me;
TCGv t0;
#if defined(TARGET_PPC64)
TCGv_i32 t1, t2;
#endif
mb = MB(ctx->opcode);
me = ME(ctx->opcode);
t0 = tcg_temp_new();
tcg_gen_andi_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x1f);
#if defined(TARGET_PPC64)
t1 = tcg_temp_new_i32();
t2 = tcg_temp_new_i32();
tcg_gen_trunc_i64_i32(t1, cpu_gpr[rS(ctx->opcode)]);
tcg_gen_trunc_i64_i32(t2, t0);
tcg_gen_rotl_i32(t1, t1, t2);
tcg_gen_extu_i32_i64(t0, t1);
tcg_temp_free_i32(t1);
tcg_temp_free_i32(t2);
#else
tcg_gen_rotl_i32(t0, cpu_gpr[rS(ctx->opcode)], t0);
#endif
if (unlikely(mb != 0 || me != 31)) {
#if defined(TARGET_PPC64)
mb += 32;
me += 32;
#endif
tcg_gen_andi_tl(cpu_gpr[rA(ctx->opcode)], t0, MASK(mb, me));
} else {
tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], t0);
}
tcg_temp_free(t0);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
#if defined(TARGET_PPC64)
#define GEN_PPC64_R2(name, opc1, opc2) \
static void glue(gen_, name##0)(DisasContext *ctx) \
{ \
gen_##name(ctx, 0); \
} \
\
static void glue(gen_, name##1)(DisasContext *ctx) \
{ \
gen_##name(ctx, 1); \
}
#define GEN_PPC64_R4(name, opc1, opc2) \
static void glue(gen_, name##0)(DisasContext *ctx) \
{ \
gen_##name(ctx, 0, 0); \
} \
\
static void glue(gen_, name##1)(DisasContext *ctx) \
{ \
gen_##name(ctx, 0, 1); \
} \
\
static void glue(gen_, name##2)(DisasContext *ctx) \
{ \
gen_##name(ctx, 1, 0); \
} \
\
static void glue(gen_, name##3)(DisasContext *ctx) \
{ \
gen_##name(ctx, 1, 1); \
}
static inline void gen_rldinm(DisasContext *ctx, uint32_t mb, uint32_t me,
uint32_t sh)
{
if (likely(sh != 0 && mb == 0 && me == (63 - sh))) {
tcg_gen_shli_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], sh);
} else if (likely(sh != 0 && me == 63 && sh == (64 - mb))) {
tcg_gen_shri_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)], mb);
} else {
TCGv t0 = tcg_temp_new();
tcg_gen_rotli_tl(t0, cpu_gpr[rS(ctx->opcode)], sh);
if (likely(mb == 0 && me == 63)) {
tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], t0);
} else {
tcg_gen_andi_tl(cpu_gpr[rA(ctx->opcode)], t0, MASK(mb, me));
}
tcg_temp_free(t0);
}
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
/* rldicl - rldicl. */
static inline void gen_rldicl(DisasContext *ctx, int mbn, int shn)
{
uint32_t sh, mb;
sh = SH(ctx->opcode) | (shn << 5);
mb = MB(ctx->opcode) | (mbn << 5);
gen_rldinm(ctx, mb, 63, sh);
}
GEN_PPC64_R4(rldicl, 0x1E, 0x00);
/* rldicr - rldicr. */
static inline void gen_rldicr(DisasContext *ctx, int men, int shn)
{
uint32_t sh, me;
sh = SH(ctx->opcode) | (shn << 5);
me = MB(ctx->opcode) | (men << 5);
gen_rldinm(ctx, 0, me, sh);
}
GEN_PPC64_R4(rldicr, 0x1E, 0x02);
/* rldic - rldic. */
static inline void gen_rldic(DisasContext *ctx, int mbn, int shn)
{
uint32_t sh, mb;
sh = SH(ctx->opcode) | (shn << 5);
mb = MB(ctx->opcode) | (mbn << 5);
gen_rldinm(ctx, mb, 63 - sh, sh);
}
GEN_PPC64_R4(rldic, 0x1E, 0x04);
static inline void gen_rldnm(DisasContext *ctx, uint32_t mb, uint32_t me)
{
TCGv t0;
t0 = tcg_temp_new();
tcg_gen_andi_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x3f);
tcg_gen_rotl_tl(t0, cpu_gpr[rS(ctx->opcode)], t0);
if (unlikely(mb != 0 || me != 63)) {
tcg_gen_andi_tl(cpu_gpr[rA(ctx->opcode)], t0, MASK(mb, me));
} else {
tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], t0);
}
tcg_temp_free(t0);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
/* rldcl - rldcl. */
static inline void gen_rldcl(DisasContext *ctx, int mbn)
{
uint32_t mb;
mb = MB(ctx->opcode) | (mbn << 5);
gen_rldnm(ctx, mb, 63);
}
GEN_PPC64_R2(rldcl, 0x1E, 0x08);
/* rldcr - rldcr. */
static inline void gen_rldcr(DisasContext *ctx, int men)
{
uint32_t me;
me = MB(ctx->opcode) | (men << 5);
gen_rldnm(ctx, 0, me);
}
GEN_PPC64_R2(rldcr, 0x1E, 0x09);
/* rldimi - rldimi. */
static inline void gen_rldimi(DisasContext *ctx, int mbn, int shn)
{
uint32_t sh, mb, me;
sh = SH(ctx->opcode) | (shn << 5);
mb = MB(ctx->opcode) | (mbn << 5);
me = 63 - sh;
if (unlikely(sh == 0 && mb == 0)) {
tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rS(ctx->opcode)]);
} else {
TCGv t0, t1;
target_ulong mask;
t0 = tcg_temp_new();
tcg_gen_rotli_tl(t0, cpu_gpr[rS(ctx->opcode)], sh);
t1 = tcg_temp_new();
mask = MASK(mb, me);
tcg_gen_andi_tl(t0, t0, mask);
tcg_gen_andi_tl(t1, cpu_gpr[rA(ctx->opcode)], ~mask);
tcg_gen_or_tl(cpu_gpr[rA(ctx->opcode)], t0, t1);
tcg_temp_free(t0);
tcg_temp_free(t1);
}
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
GEN_PPC64_R4(rldimi, 0x1E, 0x06);
#endif
/*** Integer shift ***/
/* slw & slw. */
static void gen_slw(DisasContext *ctx)
{
TCGv t0, t1;
t0 = tcg_temp_new();
/* AND rS with a mask that is 0 when rB >= 0x20 */
#if defined(TARGET_PPC64)
tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x3a);
tcg_gen_sari_tl(t0, t0, 0x3f);
#else
tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x1a);
tcg_gen_sari_tl(t0, t0, 0x1f);
#endif
tcg_gen_andc_tl(t0, cpu_gpr[rS(ctx->opcode)], t0);
t1 = tcg_temp_new();
tcg_gen_andi_tl(t1, cpu_gpr[rB(ctx->opcode)], 0x1f);
tcg_gen_shl_tl(cpu_gpr[rA(ctx->opcode)], t0, t1);
tcg_temp_free(t1);
tcg_temp_free(t0);
tcg_gen_ext32u_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rA(ctx->opcode)]);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
/* sraw & sraw. */
static void gen_sraw(DisasContext *ctx)
{
gen_helper_sraw(cpu_gpr[rA(ctx->opcode)], cpu_env,
cpu_gpr[rS(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
/* srawi & srawi. */
static void gen_srawi(DisasContext *ctx)
{
int sh = SH(ctx->opcode);
TCGv dst = cpu_gpr[rA(ctx->opcode)];
TCGv src = cpu_gpr[rS(ctx->opcode)];
if (sh == 0) {
tcg_gen_mov_tl(dst, src);
tcg_gen_movi_tl(cpu_ca, 0);
} else {
TCGv t0;
tcg_gen_ext32s_tl(dst, src);
tcg_gen_andi_tl(cpu_ca, dst, (1ULL << sh) - 1);
t0 = tcg_temp_new();
tcg_gen_sari_tl(t0, dst, TARGET_LONG_BITS - 1);
tcg_gen_and_tl(cpu_ca, cpu_ca, t0);
tcg_temp_free(t0);
tcg_gen_setcondi_tl(TCG_COND_NE, cpu_ca, cpu_ca, 0);
tcg_gen_sari_tl(dst, dst, sh);
}
if (unlikely(Rc(ctx->opcode) != 0)) {
gen_set_Rc0(ctx, dst);
}
}
/* srw & srw. */
static void gen_srw(DisasContext *ctx)
{
TCGv t0, t1;
t0 = tcg_temp_new();
/* AND rS with a mask that is 0 when rB >= 0x20 */
#if defined(TARGET_PPC64)
tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x3a);
tcg_gen_sari_tl(t0, t0, 0x3f);
#else
tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x1a);
tcg_gen_sari_tl(t0, t0, 0x1f);
#endif
tcg_gen_andc_tl(t0, cpu_gpr[rS(ctx->opcode)], t0);
tcg_gen_ext32u_tl(t0, t0);
t1 = tcg_temp_new();
tcg_gen_andi_tl(t1, cpu_gpr[rB(ctx->opcode)], 0x1f);
tcg_gen_shr_tl(cpu_gpr[rA(ctx->opcode)], t0, t1);
tcg_temp_free(t1);
tcg_temp_free(t0);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
#if defined(TARGET_PPC64)
/* sld & sld. */
static void gen_sld(DisasContext *ctx)
{
TCGv t0, t1;
t0 = tcg_temp_new();
/* AND rS with a mask that is 0 when rB >= 0x40 */
tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x39);
tcg_gen_sari_tl(t0, t0, 0x3f);
tcg_gen_andc_tl(t0, cpu_gpr[rS(ctx->opcode)], t0);
t1 = tcg_temp_new();
tcg_gen_andi_tl(t1, cpu_gpr[rB(ctx->opcode)], 0x3f);
tcg_gen_shl_tl(cpu_gpr[rA(ctx->opcode)], t0, t1);
tcg_temp_free(t1);
tcg_temp_free(t0);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
/* srad & srad. */
static void gen_srad(DisasContext *ctx)
{
gen_helper_srad(cpu_gpr[rA(ctx->opcode)], cpu_env,
cpu_gpr[rS(ctx->opcode)], cpu_gpr[rB(ctx->opcode)]);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
/* sradi & sradi. */
static inline void gen_sradi(DisasContext *ctx, int n)
{
int sh = SH(ctx->opcode) + (n << 5);
TCGv dst = cpu_gpr[rA(ctx->opcode)];
TCGv src = cpu_gpr[rS(ctx->opcode)];
if (sh == 0) {
tcg_gen_mov_tl(dst, src);
tcg_gen_movi_tl(cpu_ca, 0);
} else {
TCGv t0;
tcg_gen_andi_tl(cpu_ca, src, (1ULL << sh) - 1);
t0 = tcg_temp_new();
tcg_gen_sari_tl(t0, src, TARGET_LONG_BITS - 1);
tcg_gen_and_tl(cpu_ca, cpu_ca, t0);
tcg_temp_free(t0);
tcg_gen_setcondi_tl(TCG_COND_NE, cpu_ca, cpu_ca, 0);
tcg_gen_sari_tl(dst, src, sh);
}
if (unlikely(Rc(ctx->opcode) != 0)) {
gen_set_Rc0(ctx, dst);
}
}
static void gen_sradi0(DisasContext *ctx)
{
gen_sradi(ctx, 0);
}
static void gen_sradi1(DisasContext *ctx)
{
gen_sradi(ctx, 1);
}
/* srd & srd. */
static void gen_srd(DisasContext *ctx)
{
TCGv t0, t1;
t0 = tcg_temp_new();
/* AND rS with a mask that is 0 when rB >= 0x40 */
tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x39);
tcg_gen_sari_tl(t0, t0, 0x3f);
tcg_gen_andc_tl(t0, cpu_gpr[rS(ctx->opcode)], t0);
t1 = tcg_temp_new();
tcg_gen_andi_tl(t1, cpu_gpr[rB(ctx->opcode)], 0x3f);
tcg_gen_shr_tl(cpu_gpr[rA(ctx->opcode)], t0, t1);
tcg_temp_free(t1);
tcg_temp_free(t0);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]);
}
#endif
/*** Floating-Point arithmetic ***/
#define _GEN_FLOAT_ACB(name, op, op1, op2, isfloat, set_fprf, type) \
static void gen_f##name(DisasContext *ctx) \
{ \
if (unlikely(!ctx->fpu_enabled)) { \
gen_exception(ctx, POWERPC_EXCP_FPU); \
return; \
} \
/* NIP cannot be restored if the memory exception comes from an helper */ \
gen_update_nip(ctx, ctx->nip - 4); \
gen_reset_fpstatus(); \
gen_helper_f##op(cpu_fpr[rD(ctx->opcode)], cpu_env, \
cpu_fpr[rA(ctx->opcode)], \
cpu_fpr[rC(ctx->opcode)], cpu_fpr[rB(ctx->opcode)]); \
if (isfloat) { \
gen_helper_frsp(cpu_fpr[rD(ctx->opcode)], cpu_env, \
cpu_fpr[rD(ctx->opcode)]); \
} \
gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], set_fprf, \
Rc(ctx->opcode) != 0); \
}
#define GEN_FLOAT_ACB(name, op2, set_fprf, type) \
_GEN_FLOAT_ACB(name, name, 0x3F, op2, 0, set_fprf, type); \
_GEN_FLOAT_ACB(name##s, name, 0x3B, op2, 1, set_fprf, type);
#define _GEN_FLOAT_AB(name, op, op1, op2, inval, isfloat, set_fprf, type) \
static void gen_f##name(DisasContext *ctx) \
{ \
if (unlikely(!ctx->fpu_enabled)) { \
gen_exception(ctx, POWERPC_EXCP_FPU); \
return; \
} \
/* NIP cannot be restored if the memory exception comes from an helper */ \
gen_update_nip(ctx, ctx->nip - 4); \
gen_reset_fpstatus(); \
gen_helper_f##op(cpu_fpr[rD(ctx->opcode)], cpu_env, \
cpu_fpr[rA(ctx->opcode)], \
cpu_fpr[rB(ctx->opcode)]); \
if (isfloat) { \
gen_helper_frsp(cpu_fpr[rD(ctx->opcode)], cpu_env, \
cpu_fpr[rD(ctx->opcode)]); \
} \
gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], \
set_fprf, Rc(ctx->opcode) != 0); \
}
#define GEN_FLOAT_AB(name, op2, inval, set_fprf, type) \
_GEN_FLOAT_AB(name, name, 0x3F, op2, inval, 0, set_fprf, type); \
_GEN_FLOAT_AB(name##s, name, 0x3B, op2, inval, 1, set_fprf, type);
#define _GEN_FLOAT_AC(name, op, op1, op2, inval, isfloat, set_fprf, type) \
static void gen_f##name(DisasContext *ctx) \
{ \
if (unlikely(!ctx->fpu_enabled)) { \
gen_exception(ctx, POWERPC_EXCP_FPU); \
return; \
} \
/* NIP cannot be restored if the memory exception comes from an helper */ \
gen_update_nip(ctx, ctx->nip - 4); \
gen_reset_fpstatus(); \
gen_helper_f##op(cpu_fpr[rD(ctx->opcode)], cpu_env, \
cpu_fpr[rA(ctx->opcode)], \
cpu_fpr[rC(ctx->opcode)]); \
if (isfloat) { \
gen_helper_frsp(cpu_fpr[rD(ctx->opcode)], cpu_env, \
cpu_fpr[rD(ctx->opcode)]); \
} \
gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], \
set_fprf, Rc(ctx->opcode) != 0); \
}
#define GEN_FLOAT_AC(name, op2, inval, set_fprf, type) \
_GEN_FLOAT_AC(name, name, 0x3F, op2, inval, 0, set_fprf, type); \
_GEN_FLOAT_AC(name##s, name, 0x3B, op2, inval, 1, set_fprf, type);
#define GEN_FLOAT_B(name, op2, op3, set_fprf, type) \
static void gen_f##name(DisasContext *ctx) \
{ \
if (unlikely(!ctx->fpu_enabled)) { \
gen_exception(ctx, POWERPC_EXCP_FPU); \
return; \
} \
/* NIP cannot be restored if the memory exception comes from an helper */ \
gen_update_nip(ctx, ctx->nip - 4); \
gen_reset_fpstatus(); \
gen_helper_f##name(cpu_fpr[rD(ctx->opcode)], cpu_env, \
cpu_fpr[rB(ctx->opcode)]); \
gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], \
set_fprf, Rc(ctx->opcode) != 0); \
}
#define GEN_FLOAT_BS(name, op1, op2, set_fprf, type) \
static void gen_f##name(DisasContext *ctx) \
{ \
if (unlikely(!ctx->fpu_enabled)) { \
gen_exception(ctx, POWERPC_EXCP_FPU); \
return; \
} \
/* NIP cannot be restored if the memory exception comes from an helper */ \
gen_update_nip(ctx, ctx->nip - 4); \
gen_reset_fpstatus(); \
gen_helper_f##name(cpu_fpr[rD(ctx->opcode)], cpu_env, \
cpu_fpr[rB(ctx->opcode)]); \
gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], \
set_fprf, Rc(ctx->opcode) != 0); \
}
/* fadd - fadds */
GEN_FLOAT_AB(add, 0x15, 0x000007C0, 1, PPC_FLOAT);
/* fdiv - fdivs */
GEN_FLOAT_AB(div, 0x12, 0x000007C0, 1, PPC_FLOAT);
/* fmul - fmuls */
GEN_FLOAT_AC(mul, 0x19, 0x0000F800, 1, PPC_FLOAT);
/* fre */
GEN_FLOAT_BS(re, 0x3F, 0x18, 1, PPC_FLOAT_EXT);
/* fres */
GEN_FLOAT_BS(res, 0x3B, 0x18, 1, PPC_FLOAT_FRES);
/* frsqrte */
GEN_FLOAT_BS(rsqrte, 0x3F, 0x1A, 1, PPC_FLOAT_FRSQRTE);
/* frsqrtes */
static void gen_frsqrtes(DisasContext *ctx)
{
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
/* NIP cannot be restored if the memory exception comes from an helper */
gen_update_nip(ctx, ctx->nip - 4);
gen_reset_fpstatus();
gen_helper_frsqrte(cpu_fpr[rD(ctx->opcode)], cpu_env,
cpu_fpr[rB(ctx->opcode)]);
gen_helper_frsp(cpu_fpr[rD(ctx->opcode)], cpu_env,
cpu_fpr[rD(ctx->opcode)]);
gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], 1, Rc(ctx->opcode) != 0);
}
/* fsel */
_GEN_FLOAT_ACB(sel, sel, 0x3F, 0x17, 0, 0, PPC_FLOAT_FSEL);
/* fsub - fsubs */
GEN_FLOAT_AB(sub, 0x14, 0x000007C0, 1, PPC_FLOAT);
/* Optional: */
/* fsqrt */
static void gen_fsqrt(DisasContext *ctx)
{
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
/* NIP cannot be restored if the memory exception comes from an helper */
gen_update_nip(ctx, ctx->nip - 4);
gen_reset_fpstatus();
gen_helper_fsqrt(cpu_fpr[rD(ctx->opcode)], cpu_env,
cpu_fpr[rB(ctx->opcode)]);
gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], 1, Rc(ctx->opcode) != 0);
}
static void gen_fsqrts(DisasContext *ctx)
{
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
/* NIP cannot be restored if the memory exception comes from an helper */
gen_update_nip(ctx, ctx->nip - 4);
gen_reset_fpstatus();
gen_helper_fsqrt(cpu_fpr[rD(ctx->opcode)], cpu_env,
cpu_fpr[rB(ctx->opcode)]);
gen_helper_frsp(cpu_fpr[rD(ctx->opcode)], cpu_env,
cpu_fpr[rD(ctx->opcode)]);
gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], 1, Rc(ctx->opcode) != 0);
}
/*** Floating-Point multiply-and-add ***/
/* fmadd - fmadds */
GEN_FLOAT_ACB(madd, 0x1D, 1, PPC_FLOAT);
/* fmsub - fmsubs */
GEN_FLOAT_ACB(msub, 0x1C, 1, PPC_FLOAT);
/* fnmadd - fnmadds */
GEN_FLOAT_ACB(nmadd, 0x1F, 1, PPC_FLOAT);
/* fnmsub - fnmsubs */
GEN_FLOAT_ACB(nmsub, 0x1E, 1, PPC_FLOAT);
/*** Floating-Point round & convert ***/
/* fctiw */
GEN_FLOAT_B(ctiw, 0x0E, 0x00, 0, PPC_FLOAT);
/* fctiwu */
GEN_FLOAT_B(ctiwu, 0x0E, 0x04, 0, PPC2_FP_CVT_ISA206);
/* fctiwz */
GEN_FLOAT_B(ctiwz, 0x0F, 0x00, 0, PPC_FLOAT);
/* fctiwuz */
GEN_FLOAT_B(ctiwuz, 0x0F, 0x04, 0, PPC2_FP_CVT_ISA206);
/* frsp */
GEN_FLOAT_B(rsp, 0x0C, 0x00, 1, PPC_FLOAT);
#if defined(TARGET_PPC64)
/* fcfid */
GEN_FLOAT_B(cfid, 0x0E, 0x1A, 1, PPC_64B);
/* fcfids */
GEN_FLOAT_B(cfids, 0x0E, 0x1A, 0, PPC2_FP_CVT_ISA206);
/* fcfidu */
GEN_FLOAT_B(cfidu, 0x0E, 0x1E, 0, PPC2_FP_CVT_ISA206);
/* fcfidus */
GEN_FLOAT_B(cfidus, 0x0E, 0x1E, 0, PPC2_FP_CVT_ISA206);
/* fctid */
GEN_FLOAT_B(ctid, 0x0E, 0x19, 0, PPC_64B);
/* fctidu */
GEN_FLOAT_B(ctidu, 0x0E, 0x1D, 0, PPC2_FP_CVT_ISA206);
/* fctidz */
GEN_FLOAT_B(ctidz, 0x0F, 0x19, 0, PPC_64B);
/* fctidu */
GEN_FLOAT_B(ctiduz, 0x0F, 0x1D, 0, PPC2_FP_CVT_ISA206);
#endif
/* frin */
GEN_FLOAT_B(rin, 0x08, 0x0C, 1, PPC_FLOAT_EXT);
/* friz */
GEN_FLOAT_B(riz, 0x08, 0x0D, 1, PPC_FLOAT_EXT);
/* frip */
GEN_FLOAT_B(rip, 0x08, 0x0E, 1, PPC_FLOAT_EXT);
/* frim */
GEN_FLOAT_B(rim, 0x08, 0x0F, 1, PPC_FLOAT_EXT);
static void gen_ftdiv(DisasContext *ctx)
{
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
gen_helper_ftdiv(cpu_crf[crfD(ctx->opcode)], cpu_fpr[rA(ctx->opcode)],
cpu_fpr[rB(ctx->opcode)]);
}
static void gen_ftsqrt(DisasContext *ctx)
{
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
gen_helper_ftsqrt(cpu_crf[crfD(ctx->opcode)], cpu_fpr[rB(ctx->opcode)]);
}
/*** Floating-Point compare ***/
/* fcmpo */
static void gen_fcmpo(DisasContext *ctx)
{
TCGv_i32 crf;
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
/* NIP cannot be restored if the memory exception comes from an helper */
gen_update_nip(ctx, ctx->nip - 4);
gen_reset_fpstatus();
crf = tcg_const_i32(crfD(ctx->opcode));
gen_helper_fcmpo(cpu_env, cpu_fpr[rA(ctx->opcode)],
cpu_fpr[rB(ctx->opcode)], crf);
tcg_temp_free_i32(crf);
gen_helper_float_check_status(cpu_env);
}
/* fcmpu */
static void gen_fcmpu(DisasContext *ctx)
{
TCGv_i32 crf;
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
/* NIP cannot be restored if the memory exception comes from an helper */
gen_update_nip(ctx, ctx->nip - 4);
gen_reset_fpstatus();
crf = tcg_const_i32(crfD(ctx->opcode));
gen_helper_fcmpu(cpu_env, cpu_fpr[rA(ctx->opcode)],
cpu_fpr[rB(ctx->opcode)], crf);
tcg_temp_free_i32(crf);
gen_helper_float_check_status(cpu_env);
}
/*** Floating-point move ***/
/* fabs */
/* XXX: beware that fabs never checks for NaNs nor update FPSCR */
static void gen_fabs(DisasContext *ctx)
{
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
tcg_gen_andi_i64(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rB(ctx->opcode)],
~(1ULL << 63));
gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], 0, Rc(ctx->opcode) != 0);
}
/* fmr - fmr. */
/* XXX: beware that fmr never checks for NaNs nor update FPSCR */
static void gen_fmr(DisasContext *ctx)
{
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
tcg_gen_mov_i64(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rB(ctx->opcode)]);
gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], 0, Rc(ctx->opcode) != 0);
}
/* fnabs */
/* XXX: beware that fnabs never checks for NaNs nor update FPSCR */
static void gen_fnabs(DisasContext *ctx)
{
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
tcg_gen_ori_i64(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rB(ctx->opcode)],
1ULL << 63);
gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], 0, Rc(ctx->opcode) != 0);
}
/* fneg */
/* XXX: beware that fneg never checks for NaNs nor update FPSCR */
static void gen_fneg(DisasContext *ctx)
{
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
tcg_gen_xori_i64(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rB(ctx->opcode)],
1ULL << 63);
gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], 0, Rc(ctx->opcode) != 0);
}
/* fcpsgn: PowerPC 2.05 specification */
/* XXX: beware that fcpsgn never checks for NaNs nor update FPSCR */
static void gen_fcpsgn(DisasContext *ctx)
{
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
tcg_gen_deposit_i64(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rA(ctx->opcode)],
cpu_fpr[rB(ctx->opcode)], 0, 63);
gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], 0, Rc(ctx->opcode) != 0);
}
static void gen_fmrgew(DisasContext *ctx)
{
TCGv_i64 b0;
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
b0 = tcg_temp_new_i64();
tcg_gen_shri_i64(b0, cpu_fpr[rB(ctx->opcode)], 32);
tcg_gen_deposit_i64(cpu_fpr[rD(ctx->opcode)], cpu_fpr[rA(ctx->opcode)],
b0, 0, 32);
tcg_temp_free_i64(b0);
}
static void gen_fmrgow(DisasContext *ctx)
{
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
tcg_gen_deposit_i64(cpu_fpr[rD(ctx->opcode)],
cpu_fpr[rB(ctx->opcode)],
cpu_fpr[rA(ctx->opcode)],
32, 32);
}
/*** Floating-Point status & ctrl register ***/
/* mcrfs */
static void gen_mcrfs(DisasContext *ctx)
{
TCGv tmp = tcg_temp_new();
int bfa;
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
bfa = 4 * (7 - crfS(ctx->opcode));
tcg_gen_shri_tl(tmp, cpu_fpscr, bfa);
tcg_gen_trunc_tl_i32(cpu_crf[crfD(ctx->opcode)], tmp);
tcg_temp_free(tmp);
tcg_gen_andi_i32(cpu_crf[crfD(ctx->opcode)], cpu_crf[crfD(ctx->opcode)], 0xf);
tcg_gen_andi_tl(cpu_fpscr, cpu_fpscr, ~(0xF << bfa));
}
/* mffs */
static void gen_mffs(DisasContext *ctx)
{
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
gen_reset_fpstatus();
tcg_gen_extu_tl_i64(cpu_fpr[rD(ctx->opcode)], cpu_fpscr);
gen_compute_fprf(cpu_fpr[rD(ctx->opcode)], 0, Rc(ctx->opcode) != 0);
}
/* mtfsb0 */
static void gen_mtfsb0(DisasContext *ctx)
{
uint8_t crb;
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
crb = 31 - crbD(ctx->opcode);
gen_reset_fpstatus();
if (likely(crb != FPSCR_FEX && crb != FPSCR_VX)) {
TCGv_i32 t0;
/* NIP cannot be restored if the memory exception comes from an helper */
gen_update_nip(ctx, ctx->nip - 4);
t0 = tcg_const_i32(crb);
gen_helper_fpscr_clrbit(cpu_env, t0);
tcg_temp_free_i32(t0);
}
if (unlikely(Rc(ctx->opcode) != 0)) {
tcg_gen_trunc_tl_i32(cpu_crf[1], cpu_fpscr);
tcg_gen_shri_i32(cpu_crf[1], cpu_crf[1], FPSCR_OX);
}
}
/* mtfsb1 */
static void gen_mtfsb1(DisasContext *ctx)