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translate.c
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/*
* UniCore32 translation
*
* Copyright (C) 2010-2012 Guan Xuetao
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation, or (at your option) any
* later version. See the COPYING file in the top-level directory.
*/
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include "cpu.h"
#include "disas/disas.h"
#include "tcg-op.h"
#include "qemu/log.h"
#include "exec/cpu_ldst.h"
#include "exec/helper-proto.h"
#include "exec/helper-gen.h"
#include "trace-tcg.h"
/* internal defines */
typedef struct DisasContext {
target_ulong pc;
int is_jmp;
/* Nonzero if this instruction has been conditionally skipped. */
int condjmp;
/* The label that will be jumped to when the instruction is skipped. */
TCGLabel *condlabel;
struct TranslationBlock *tb;
int singlestep_enabled;
#ifndef CONFIG_USER_ONLY
int user;
#endif
} DisasContext;
#ifndef CONFIG_USER_ONLY
#define IS_USER(s) (s->user)
#else
#define IS_USER(s) 1
#endif
/* These instructions trap after executing, so defer them until after the
conditional executions state has been updated. */
#define DISAS_SYSCALL 5
static TCGv_ptr cpu_env;
static TCGv_i32 cpu_R[32];
/* FIXME: These should be removed. */
static TCGv cpu_F0s, cpu_F1s;
static TCGv_i64 cpu_F0d, cpu_F1d;
#include "exec/gen-icount.h"
static const char *regnames[] = {
"r00", "r01", "r02", "r03", "r04", "r05", "r06", "r07",
"r08", "r09", "r10", "r11", "r12", "r13", "r14", "r15",
"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
"r24", "r25", "r26", "r27", "r28", "r29", "r30", "pc" };
/* initialize TCG globals. */
void uc32_translate_init(void)
{
int i;
cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
for (i = 0; i < 32; i++) {
cpu_R[i] = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUUniCore32State, regs[i]), regnames[i]);
}
}
static int num_temps;
/* Allocate a temporary variable. */
static TCGv_i32 new_tmp(void)
{
num_temps++;
return tcg_temp_new_i32();
}
/* Release a temporary variable. */
static void dead_tmp(TCGv tmp)
{
tcg_temp_free(tmp);
num_temps--;
}
static inline TCGv load_cpu_offset(int offset)
{
TCGv tmp = new_tmp();
tcg_gen_ld_i32(tmp, cpu_env, offset);
return tmp;
}
#define load_cpu_field(name) load_cpu_offset(offsetof(CPUUniCore32State, name))
static inline void store_cpu_offset(TCGv var, int offset)
{
tcg_gen_st_i32(var, cpu_env, offset);
dead_tmp(var);
}
#define store_cpu_field(var, name) \
store_cpu_offset(var, offsetof(CPUUniCore32State, name))
/* Set a variable to the value of a CPU register. */
static void load_reg_var(DisasContext *s, TCGv var, int reg)
{
if (reg == 31) {
uint32_t addr;
/* normaly, since we updated PC */
addr = (long)s->pc;
tcg_gen_movi_i32(var, addr);
} else {
tcg_gen_mov_i32(var, cpu_R[reg]);
}
}
/* Create a new temporary and set it to the value of a CPU register. */
static inline TCGv load_reg(DisasContext *s, int reg)
{
TCGv tmp = new_tmp();
load_reg_var(s, tmp, reg);
return tmp;
}
/* Set a CPU register. The source must be a temporary and will be
marked as dead. */
static void store_reg(DisasContext *s, int reg, TCGv var)
{
if (reg == 31) {
tcg_gen_andi_i32(var, var, ~3);
s->is_jmp = DISAS_JUMP;
}
tcg_gen_mov_i32(cpu_R[reg], var);
dead_tmp(var);
}
/* Value extensions. */
#define gen_uxtb(var) tcg_gen_ext8u_i32(var, var)
#define gen_uxth(var) tcg_gen_ext16u_i32(var, var)
#define gen_sxtb(var) tcg_gen_ext8s_i32(var, var)
#define gen_sxth(var) tcg_gen_ext16s_i32(var, var)
#define UCOP_REG_M (((insn) >> 0) & 0x1f)
#define UCOP_REG_N (((insn) >> 19) & 0x1f)
#define UCOP_REG_D (((insn) >> 14) & 0x1f)
#define UCOP_REG_S (((insn) >> 9) & 0x1f)
#define UCOP_REG_LO (((insn) >> 14) & 0x1f)
#define UCOP_REG_HI (((insn) >> 9) & 0x1f)
#define UCOP_SH_OP (((insn) >> 6) & 0x03)
#define UCOP_SH_IM (((insn) >> 9) & 0x1f)
#define UCOP_OPCODES (((insn) >> 25) & 0x0f)
#define UCOP_IMM_9 (((insn) >> 0) & 0x1ff)
#define UCOP_IMM10 (((insn) >> 0) & 0x3ff)
#define UCOP_IMM14 (((insn) >> 0) & 0x3fff)
#define UCOP_COND (((insn) >> 25) & 0x0f)
#define UCOP_CMOV_COND (((insn) >> 19) & 0x0f)
#define UCOP_CPNUM (((insn) >> 10) & 0x0f)
#define UCOP_UCF64_FMT (((insn) >> 24) & 0x03)
#define UCOP_UCF64_FUNC (((insn) >> 6) & 0x0f)
#define UCOP_UCF64_COND (((insn) >> 6) & 0x0f)
#define UCOP_SET(i) ((insn) & (1 << (i)))
#define UCOP_SET_P UCOP_SET(28)
#define UCOP_SET_U UCOP_SET(27)
#define UCOP_SET_B UCOP_SET(26)
#define UCOP_SET_W UCOP_SET(25)
#define UCOP_SET_L UCOP_SET(24)
#define UCOP_SET_S UCOP_SET(24)
#define ILLEGAL cpu_abort(CPU(cpu), \
"Illegal UniCore32 instruction %x at line %d!", \
insn, __LINE__)
#ifndef CONFIG_USER_ONLY
static void disas_cp0_insn(CPUUniCore32State *env, DisasContext *s,
uint32_t insn)
{
UniCore32CPU *cpu = uc32_env_get_cpu(env);
TCGv tmp, tmp2, tmp3;
if ((insn & 0xfe000000) == 0xe0000000) {
tmp2 = new_tmp();
tmp3 = new_tmp();
tcg_gen_movi_i32(tmp2, UCOP_REG_N);
tcg_gen_movi_i32(tmp3, UCOP_IMM10);
if (UCOP_SET_L) {
tmp = new_tmp();
gen_helper_cp0_get(tmp, cpu_env, tmp2, tmp3);
store_reg(s, UCOP_REG_D, tmp);
} else {
tmp = load_reg(s, UCOP_REG_D);
gen_helper_cp0_set(cpu_env, tmp, tmp2, tmp3);
dead_tmp(tmp);
}
dead_tmp(tmp2);
dead_tmp(tmp3);
return;
}
ILLEGAL;
}
static void disas_ocd_insn(CPUUniCore32State *env, DisasContext *s,
uint32_t insn)
{
UniCore32CPU *cpu = uc32_env_get_cpu(env);
TCGv tmp;
if ((insn & 0xff003fff) == 0xe1000400) {
/*
* movc rd, pp.nn, #imm9
* rd: UCOP_REG_D
* nn: UCOP_REG_N (must be 0)
* imm9: 0
*/
if (UCOP_REG_N == 0) {
tmp = new_tmp();
tcg_gen_movi_i32(tmp, 0);
store_reg(s, UCOP_REG_D, tmp);
return;
} else {
ILLEGAL;
}
}
if ((insn & 0xff003fff) == 0xe0000401) {
/*
* movc pp.nn, rn, #imm9
* rn: UCOP_REG_D
* nn: UCOP_REG_N (must be 1)
* imm9: 1
*/
if (UCOP_REG_N == 1) {
tmp = load_reg(s, UCOP_REG_D);
gen_helper_cp1_putc(tmp);
dead_tmp(tmp);
return;
} else {
ILLEGAL;
}
}
ILLEGAL;
}
#endif
static inline void gen_set_asr(TCGv var, uint32_t mask)
{
TCGv tmp_mask = tcg_const_i32(mask);
gen_helper_asr_write(cpu_env, var, tmp_mask);
tcg_temp_free_i32(tmp_mask);
}
/* Set NZCV flags from the high 4 bits of var. */
#define gen_set_nzcv(var) gen_set_asr(var, ASR_NZCV)
static void gen_exception(int excp)
{
TCGv tmp = new_tmp();
tcg_gen_movi_i32(tmp, excp);
gen_helper_exception(cpu_env, tmp);
dead_tmp(tmp);
}
#define gen_set_CF(var) tcg_gen_st_i32(var, cpu_env, offsetof(CPUUniCore32State, CF))
/* Set CF to the top bit of var. */
static void gen_set_CF_bit31(TCGv var)
{
TCGv tmp = new_tmp();
tcg_gen_shri_i32(tmp, var, 31);
gen_set_CF(tmp);
dead_tmp(tmp);
}
/* Set N and Z flags from var. */
static inline void gen_logic_CC(TCGv var)
{
tcg_gen_st_i32(var, cpu_env, offsetof(CPUUniCore32State, NF));
tcg_gen_st_i32(var, cpu_env, offsetof(CPUUniCore32State, ZF));
}
/* dest = T0 + T1 + CF. */
static void gen_add_carry(TCGv dest, TCGv t0, TCGv t1)
{
TCGv tmp;
tcg_gen_add_i32(dest, t0, t1);
tmp = load_cpu_field(CF);
tcg_gen_add_i32(dest, dest, tmp);
dead_tmp(tmp);
}
/* dest = T0 - T1 + CF - 1. */
static void gen_sub_carry(TCGv dest, TCGv t0, TCGv t1)
{
TCGv tmp;
tcg_gen_sub_i32(dest, t0, t1);
tmp = load_cpu_field(CF);
tcg_gen_add_i32(dest, dest, tmp);
tcg_gen_subi_i32(dest, dest, 1);
dead_tmp(tmp);
}
static void shifter_out_im(TCGv var, int shift)
{
TCGv tmp = new_tmp();
if (shift == 0) {
tcg_gen_andi_i32(tmp, var, 1);
} else {
tcg_gen_shri_i32(tmp, var, shift);
if (shift != 31) {
tcg_gen_andi_i32(tmp, tmp, 1);
}
}
gen_set_CF(tmp);
dead_tmp(tmp);
}
/* Shift by immediate. Includes special handling for shift == 0. */
static inline void gen_uc32_shift_im(TCGv var, int shiftop, int shift,
int flags)
{
switch (shiftop) {
case 0: /* LSL */
if (shift != 0) {
if (flags) {
shifter_out_im(var, 32 - shift);
}
tcg_gen_shli_i32(var, var, shift);
}
break;
case 1: /* LSR */
if (shift == 0) {
if (flags) {
tcg_gen_shri_i32(var, var, 31);
gen_set_CF(var);
}
tcg_gen_movi_i32(var, 0);
} else {
if (flags) {
shifter_out_im(var, shift - 1);
}
tcg_gen_shri_i32(var, var, shift);
}
break;
case 2: /* ASR */
if (shift == 0) {
shift = 32;
}
if (flags) {
shifter_out_im(var, shift - 1);
}
if (shift == 32) {
shift = 31;
}
tcg_gen_sari_i32(var, var, shift);
break;
case 3: /* ROR/RRX */
if (shift != 0) {
if (flags) {
shifter_out_im(var, shift - 1);
}
tcg_gen_rotri_i32(var, var, shift); break;
} else {
TCGv tmp = load_cpu_field(CF);
if (flags) {
shifter_out_im(var, 0);
}
tcg_gen_shri_i32(var, var, 1);
tcg_gen_shli_i32(tmp, tmp, 31);
tcg_gen_or_i32(var, var, tmp);
dead_tmp(tmp);
}
}
};
static inline void gen_uc32_shift_reg(TCGv var, int shiftop,
TCGv shift, int flags)
{
if (flags) {
switch (shiftop) {
case 0:
gen_helper_shl_cc(var, cpu_env, var, shift);
break;
case 1:
gen_helper_shr_cc(var, cpu_env, var, shift);
break;
case 2:
gen_helper_sar_cc(var, cpu_env, var, shift);
break;
case 3:
gen_helper_ror_cc(var, cpu_env, var, shift);
break;
}
} else {
switch (shiftop) {
case 0:
gen_helper_shl(var, var, shift);
break;
case 1:
gen_helper_shr(var, var, shift);
break;
case 2:
gen_helper_sar(var, var, shift);
break;
case 3:
tcg_gen_andi_i32(shift, shift, 0x1f);
tcg_gen_rotr_i32(var, var, shift);
break;
}
}
dead_tmp(shift);
}
static void gen_test_cc(int cc, TCGLabel *label)
{
TCGv tmp;
TCGv tmp2;
TCGLabel *inv;
switch (cc) {
case 0: /* eq: Z */
tmp = load_cpu_field(ZF);
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
break;
case 1: /* ne: !Z */
tmp = load_cpu_field(ZF);
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, label);
break;
case 2: /* cs: C */
tmp = load_cpu_field(CF);
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, label);
break;
case 3: /* cc: !C */
tmp = load_cpu_field(CF);
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
break;
case 4: /* mi: N */
tmp = load_cpu_field(NF);
tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label);
break;
case 5: /* pl: !N */
tmp = load_cpu_field(NF);
tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label);
break;
case 6: /* vs: V */
tmp = load_cpu_field(VF);
tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label);
break;
case 7: /* vc: !V */
tmp = load_cpu_field(VF);
tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label);
break;
case 8: /* hi: C && !Z */
inv = gen_new_label();
tmp = load_cpu_field(CF);
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, inv);
dead_tmp(tmp);
tmp = load_cpu_field(ZF);
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, label);
gen_set_label(inv);
break;
case 9: /* ls: !C || Z */
tmp = load_cpu_field(CF);
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
dead_tmp(tmp);
tmp = load_cpu_field(ZF);
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
break;
case 10: /* ge: N == V -> N ^ V == 0 */
tmp = load_cpu_field(VF);
tmp2 = load_cpu_field(NF);
tcg_gen_xor_i32(tmp, tmp, tmp2);
dead_tmp(tmp2);
tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label);
break;
case 11: /* lt: N != V -> N ^ V != 0 */
tmp = load_cpu_field(VF);
tmp2 = load_cpu_field(NF);
tcg_gen_xor_i32(tmp, tmp, tmp2);
dead_tmp(tmp2);
tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label);
break;
case 12: /* gt: !Z && N == V */
inv = gen_new_label();
tmp = load_cpu_field(ZF);
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, inv);
dead_tmp(tmp);
tmp = load_cpu_field(VF);
tmp2 = load_cpu_field(NF);
tcg_gen_xor_i32(tmp, tmp, tmp2);
dead_tmp(tmp2);
tcg_gen_brcondi_i32(TCG_COND_GE, tmp, 0, label);
gen_set_label(inv);
break;
case 13: /* le: Z || N != V */
tmp = load_cpu_field(ZF);
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
dead_tmp(tmp);
tmp = load_cpu_field(VF);
tmp2 = load_cpu_field(NF);
tcg_gen_xor_i32(tmp, tmp, tmp2);
dead_tmp(tmp2);
tcg_gen_brcondi_i32(TCG_COND_LT, tmp, 0, label);
break;
default:
fprintf(stderr, "Bad condition code 0x%x\n", cc);
abort();
}
dead_tmp(tmp);
}
static const uint8_t table_logic_cc[16] = {
1, /* and */ 1, /* xor */ 0, /* sub */ 0, /* rsb */
0, /* add */ 0, /* adc */ 0, /* sbc */ 0, /* rsc */
1, /* andl */ 1, /* xorl */ 0, /* cmp */ 0, /* cmn */
1, /* orr */ 1, /* mov */ 1, /* bic */ 1, /* mvn */
};
/* Set PC state from an immediate address. */
static inline void gen_bx_im(DisasContext *s, uint32_t addr)
{
s->is_jmp = DISAS_UPDATE;
tcg_gen_movi_i32(cpu_R[31], addr & ~3);
}
/* Set PC state from var. var is marked as dead. */
static inline void gen_bx(DisasContext *s, TCGv var)
{
s->is_jmp = DISAS_UPDATE;
tcg_gen_andi_i32(cpu_R[31], var, ~3);
dead_tmp(var);
}
static inline void store_reg_bx(DisasContext *s, int reg, TCGv var)
{
store_reg(s, reg, var);
}
static inline TCGv gen_ld8s(TCGv addr, int index)
{
TCGv tmp = new_tmp();
tcg_gen_qemu_ld8s(tmp, addr, index);
return tmp;
}
static inline TCGv gen_ld8u(TCGv addr, int index)
{
TCGv tmp = new_tmp();
tcg_gen_qemu_ld8u(tmp, addr, index);
return tmp;
}
static inline TCGv gen_ld16s(TCGv addr, int index)
{
TCGv tmp = new_tmp();
tcg_gen_qemu_ld16s(tmp, addr, index);
return tmp;
}
static inline TCGv gen_ld16u(TCGv addr, int index)
{
TCGv tmp = new_tmp();
tcg_gen_qemu_ld16u(tmp, addr, index);
return tmp;
}
static inline TCGv gen_ld32(TCGv addr, int index)
{
TCGv tmp = new_tmp();
tcg_gen_qemu_ld32u(tmp, addr, index);
return tmp;
}
static inline void gen_st8(TCGv val, TCGv addr, int index)
{
tcg_gen_qemu_st8(val, addr, index);
dead_tmp(val);
}
static inline void gen_st16(TCGv val, TCGv addr, int index)
{
tcg_gen_qemu_st16(val, addr, index);
dead_tmp(val);
}
static inline void gen_st32(TCGv val, TCGv addr, int index)
{
tcg_gen_qemu_st32(val, addr, index);
dead_tmp(val);
}
static inline void gen_set_pc_im(uint32_t val)
{
tcg_gen_movi_i32(cpu_R[31], val);
}
/* Force a TB lookup after an instruction that changes the CPU state. */
static inline void gen_lookup_tb(DisasContext *s)
{
tcg_gen_movi_i32(cpu_R[31], s->pc & ~1);
s->is_jmp = DISAS_UPDATE;
}
static inline void gen_add_data_offset(DisasContext *s, unsigned int insn,
TCGv var)
{
int val;
TCGv offset;
if (UCOP_SET(29)) {
/* immediate */
val = UCOP_IMM14;
if (!UCOP_SET_U) {
val = -val;
}
if (val != 0) {
tcg_gen_addi_i32(var, var, val);
}
} else {
/* shift/register */
offset = load_reg(s, UCOP_REG_M);
gen_uc32_shift_im(offset, UCOP_SH_OP, UCOP_SH_IM, 0);
if (!UCOP_SET_U) {
tcg_gen_sub_i32(var, var, offset);
} else {
tcg_gen_add_i32(var, var, offset);
}
dead_tmp(offset);
}
}
static inline void gen_add_datah_offset(DisasContext *s, unsigned int insn,
TCGv var)
{
int val;
TCGv offset;
if (UCOP_SET(26)) {
/* immediate */
val = (insn & 0x1f) | ((insn >> 4) & 0x3e0);
if (!UCOP_SET_U) {
val = -val;
}
if (val != 0) {
tcg_gen_addi_i32(var, var, val);
}
} else {
/* register */
offset = load_reg(s, UCOP_REG_M);
if (!UCOP_SET_U) {
tcg_gen_sub_i32(var, var, offset);
} else {
tcg_gen_add_i32(var, var, offset);
}
dead_tmp(offset);
}
}
static inline long ucf64_reg_offset(int reg)
{
if (reg & 1) {
return offsetof(CPUUniCore32State, ucf64.regs[reg >> 1])
+ offsetof(CPU_DoubleU, l.upper);
} else {
return offsetof(CPUUniCore32State, ucf64.regs[reg >> 1])
+ offsetof(CPU_DoubleU, l.lower);
}
}
#define ucf64_gen_ld32(reg) load_cpu_offset(ucf64_reg_offset(reg))
#define ucf64_gen_st32(var, reg) store_cpu_offset(var, ucf64_reg_offset(reg))
/* UniCore-F64 single load/store I_offset */
static void do_ucf64_ldst_i(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
{
UniCore32CPU *cpu = uc32_env_get_cpu(env);
int offset;
TCGv tmp;
TCGv addr;
addr = load_reg(s, UCOP_REG_N);
if (!UCOP_SET_P && !UCOP_SET_W) {
ILLEGAL;
}
if (UCOP_SET_P) {
offset = UCOP_IMM10 << 2;
if (!UCOP_SET_U) {
offset = -offset;
}
if (offset != 0) {
tcg_gen_addi_i32(addr, addr, offset);
}
}
if (UCOP_SET_L) { /* load */
tmp = gen_ld32(addr, IS_USER(s));
ucf64_gen_st32(tmp, UCOP_REG_D);
} else { /* store */
tmp = ucf64_gen_ld32(UCOP_REG_D);
gen_st32(tmp, addr, IS_USER(s));
}
if (!UCOP_SET_P) {
offset = UCOP_IMM10 << 2;
if (!UCOP_SET_U) {
offset = -offset;
}
if (offset != 0) {
tcg_gen_addi_i32(addr, addr, offset);
}
}
if (UCOP_SET_W) {
store_reg(s, UCOP_REG_N, addr);
} else {
dead_tmp(addr);
}
}
/* UniCore-F64 load/store multiple words */
static void do_ucf64_ldst_m(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
{
UniCore32CPU *cpu = uc32_env_get_cpu(env);
unsigned int i;
int j, n, freg;
TCGv tmp;
TCGv addr;
if (UCOP_REG_D != 0) {
ILLEGAL;
}
if (UCOP_REG_N == 31) {
ILLEGAL;
}
if ((insn << 24) == 0) {
ILLEGAL;
}
addr = load_reg(s, UCOP_REG_N);
n = 0;
for (i = 0; i < 8; i++) {
if (UCOP_SET(i)) {
n++;
}
}
if (UCOP_SET_U) {
if (UCOP_SET_P) { /* pre increment */
tcg_gen_addi_i32(addr, addr, 4);
} /* unnecessary to do anything when post increment */
} else {
if (UCOP_SET_P) { /* pre decrement */
tcg_gen_addi_i32(addr, addr, -(n * 4));
} else { /* post decrement */
if (n != 1) {
tcg_gen_addi_i32(addr, addr, -((n - 1) * 4));
}
}
}
freg = ((insn >> 8) & 3) << 3; /* freg should be 0, 8, 16, 24 */
for (i = 0, j = 0; i < 8; i++, freg++) {
if (!UCOP_SET(i)) {
continue;
}
if (UCOP_SET_L) { /* load */
tmp = gen_ld32(addr, IS_USER(s));
ucf64_gen_st32(tmp, freg);
} else { /* store */
tmp = ucf64_gen_ld32(freg);
gen_st32(tmp, addr, IS_USER(s));
}
j++;
/* unnecessary to add after the last transfer */
if (j != n) {
tcg_gen_addi_i32(addr, addr, 4);
}
}
if (UCOP_SET_W) { /* write back */
if (UCOP_SET_U) {
if (!UCOP_SET_P) { /* post increment */
tcg_gen_addi_i32(addr, addr, 4);
} /* unnecessary to do anything when pre increment */
} else {
if (UCOP_SET_P) {
/* pre decrement */
if (n != 1) {
tcg_gen_addi_i32(addr, addr, -((n - 1) * 4));
}
} else {
/* post decrement */
tcg_gen_addi_i32(addr, addr, -(n * 4));
}
}
store_reg(s, UCOP_REG_N, addr);
} else {
dead_tmp(addr);
}
}
/* UniCore-F64 mrc/mcr */
static void do_ucf64_trans(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
{
UniCore32CPU *cpu = uc32_env_get_cpu(env);
TCGv tmp;
if ((insn & 0xfe0003ff) == 0xe2000000) {
/* control register */
if ((UCOP_REG_N != UC32_UCF64_FPSCR) || (UCOP_REG_D == 31)) {
ILLEGAL;
}
if (UCOP_SET(24)) {
/* CFF */
tmp = new_tmp();
gen_helper_ucf64_get_fpscr(tmp, cpu_env);
store_reg(s, UCOP_REG_D, tmp);
} else {
/* CTF */
tmp = load_reg(s, UCOP_REG_D);
gen_helper_ucf64_set_fpscr(cpu_env, tmp);
dead_tmp(tmp);
gen_lookup_tb(s);
}
return;
}
if ((insn & 0xfe0003ff) == 0xe0000000) {
/* general register */
if (UCOP_REG_D == 31) {
ILLEGAL;
}
if (UCOP_SET(24)) { /* MFF */
tmp = ucf64_gen_ld32(UCOP_REG_N);
store_reg(s, UCOP_REG_D, tmp);
} else { /* MTF */
tmp = load_reg(s, UCOP_REG_D);
ucf64_gen_st32(tmp, UCOP_REG_N);
}
return;
}
if ((insn & 0xfb000000) == 0xe9000000) {
/* MFFC */
if (UCOP_REG_D != 31) {
ILLEGAL;
}
if (UCOP_UCF64_COND & 0x8) {
ILLEGAL;
}
tmp = new_tmp();
tcg_gen_movi_i32(tmp, UCOP_UCF64_COND);
if (UCOP_SET(26)) {
tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_N));
tcg_gen_ld_i64(cpu_F1d, cpu_env, ucf64_reg_offset(UCOP_REG_M));
gen_helper_ucf64_cmpd(cpu_F0d, cpu_F1d, tmp, cpu_env);
} else {
tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_N));
tcg_gen_ld_i32(cpu_F1s, cpu_env, ucf64_reg_offset(UCOP_REG_M));
gen_helper_ucf64_cmps(cpu_F0s, cpu_F1s, tmp, cpu_env);
}
dead_tmp(tmp);
return;
}
ILLEGAL;
}
/* UniCore-F64 convert instructions */
static void do_ucf64_fcvt(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
{
UniCore32CPU *cpu = uc32_env_get_cpu(env);
if (UCOP_UCF64_FMT == 3) {
ILLEGAL;
}
if (UCOP_REG_N != 0) {
ILLEGAL;
}
switch (UCOP_UCF64_FUNC) {
case 0: /* cvt.s */
switch (UCOP_UCF64_FMT) {
case 1 /* d */:
tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_M));
gen_helper_ucf64_df2sf(cpu_F0s, cpu_F0d, cpu_env);
tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D));
break;
case 2 /* w */:
tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M));
gen_helper_ucf64_si2sf(cpu_F0s, cpu_F0s, cpu_env);
tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D));
break;
default /* s */:
ILLEGAL;
break;
}
break;
case 1: /* cvt.d */
switch (UCOP_UCF64_FMT) {
case 0 /* s */:
tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M));
gen_helper_ucf64_sf2df(cpu_F0d, cpu_F0s, cpu_env);
tcg_gen_st_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_D));
break;
case 2 /* w */:
tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M));
gen_helper_ucf64_si2df(cpu_F0d, cpu_F0s, cpu_env);
tcg_gen_st_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_D));
break;
default /* d */:
ILLEGAL;
break;
}
break;
case 4: /* cvt.w */
switch (UCOP_UCF64_FMT) {
case 0 /* s */:
tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_M));
gen_helper_ucf64_sf2si(cpu_F0s, cpu_F0s, cpu_env);
tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D));
break;
case 1 /* d */:
tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_M));
gen_helper_ucf64_df2si(cpu_F0s, cpu_F0d, cpu_env);
tcg_gen_st_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_D));
break;
default /* w */:
ILLEGAL;
break;
}
break;
default:
ILLEGAL;
}
}
/* UniCore-F64 compare instructions */
static void do_ucf64_fcmp(CPUUniCore32State *env, DisasContext *s, uint32_t insn)
{
UniCore32CPU *cpu = uc32_env_get_cpu(env);
if (UCOP_SET(25)) {
ILLEGAL;
}
if (UCOP_REG_D != 0) {
ILLEGAL;
}
ILLEGAL; /* TODO */
if (UCOP_SET(24)) {
tcg_gen_ld_i64(cpu_F0d, cpu_env, ucf64_reg_offset(UCOP_REG_N));
tcg_gen_ld_i64(cpu_F1d, cpu_env, ucf64_reg_offset(UCOP_REG_M));
/* gen_helper_ucf64_cmpd(cpu_F0d, cpu_F1d, cpu_env); */
} else {
tcg_gen_ld_i32(cpu_F0s, cpu_env, ucf64_reg_offset(UCOP_REG_N));
tcg_gen_ld_i32(cpu_F1s, cpu_env, ucf64_reg_offset(UCOP_REG_M));
/* gen_helper_ucf64_cmps(cpu_F0s, cpu_F1s, cpu_env); */
}
}
#define gen_helper_ucf64_movs(x, y) do { } while (0)
#define gen_helper_ucf64_movd(x, y) do { } while (0)
#define UCF64_OP1(name) do { \
if (UCOP_REG_N != 0) { \
ILLEGAL; \
} \
switch (UCOP_UCF64_FMT) { \
case 0 /* s */: \
tcg_gen_ld_i32(cpu_F0s, cpu_env, \
ucf64_reg_offset(UCOP_REG_M)); \
gen_helper_ucf64_##name##s(cpu_F0s, cpu_F0s); \
tcg_gen_st_i32(cpu_F0s, cpu_env, \
ucf64_reg_offset(UCOP_REG_D)); \
break; \
case 1 /* d */: \
tcg_gen_ld_i64(cpu_F0d, cpu_env, \
ucf64_reg_offset(UCOP_REG_M)); \
gen_helper_ucf64_##name##d(cpu_F0d, cpu_F0d); \
tcg_gen_st_i64(cpu_F0d, cpu_env, \
ucf64_reg_offset(UCOP_REG_D)); \
break; \
case 2 /* w */: \
ILLEGAL; \
break; \
} \
} while (0)
#define UCF64_OP2(name) do { \
switch (UCOP_UCF64_FMT) { \