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qemu / qemu / 09641ef93112c45bc32cf86a4999d0e0532909c3 / . / target / rx / translate.c
blob: 9ea941c6302f0b89775dd952cc8b955150d2655e [file] [log] [blame]
/*
* RX translation
*
* Copyright (c) 2019 Yoshinori Sato
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qemu/bswap.h"
#include "qemu/qemu-print.h"
#include "cpu.h"
#include "exec/exec-all.h"
#include "tcg/tcg-op.h"
#include "exec/cpu_ldst.h"
#include "exec/helper-proto.h"
#include "exec/helper-gen.h"
#include "exec/translator.h"
#include "trace-tcg.h"
#include "exec/log.h"
typedef struct DisasContext {
DisasContextBase base;
CPURXState *env;
uint32_t pc;
} DisasContext;
typedef struct DisasCompare {
TCGv value;
TCGv temp;
TCGCond cond;
} DisasCompare;
const char *rx_crname(uint8_t cr)
{
static const char *cr_names[] = {
"psw", "pc", "usp", "fpsw", "", "", "", "",
"bpsw", "bpc", "isp", "fintv", "intb", "", "", ""
};
if (cr >= ARRAY_SIZE(cr_names)) {
return "illegal";
}
return cr_names[cr];
}
/* Target-specific values for dc->base.is_jmp. */
#define DISAS_JUMP DISAS_TARGET_0
#define DISAS_UPDATE DISAS_TARGET_1
#define DISAS_EXIT DISAS_TARGET_2
/* global register indexes */
static TCGv cpu_regs[16];
static TCGv cpu_psw_o, cpu_psw_s, cpu_psw_z, cpu_psw_c;
static TCGv cpu_psw_i, cpu_psw_pm, cpu_psw_u, cpu_psw_ipl;
static TCGv cpu_usp, cpu_fpsw, cpu_bpsw, cpu_bpc, cpu_isp;
static TCGv cpu_fintv, cpu_intb, cpu_pc;
static TCGv_i64 cpu_acc;
#define cpu_sp cpu_regs[0]
#include "exec/gen-icount.h"
/* decoder helper */
static uint32_t decode_load_bytes(DisasContext *ctx, uint32_t insn,
int i, int n)
{
while (++i <= n) {
uint8_t b = cpu_ldub_code(ctx->env, ctx->base.pc_next++);
insn |= b << (32 - i * 8);
}
return insn;
}
static uint32_t li(DisasContext *ctx, int sz)
{
int32_t tmp, addr;
CPURXState *env = ctx->env;
addr = ctx->base.pc_next;
tcg_debug_assert(sz < 4);
switch (sz) {
case 1:
ctx->base.pc_next += 1;
return cpu_ldsb_code(env, addr);
case 2:
ctx->base.pc_next += 2;
return cpu_ldsw_code(env, addr);
case 3:
ctx->base.pc_next += 3;
tmp = cpu_ldsb_code(env, addr + 2) << 16;
tmp |= cpu_lduw_code(env, addr) & 0xffff;
return tmp;
case 0:
ctx->base.pc_next += 4;
return cpu_ldl_code(env, addr);
}
return 0;
}
static int bdsp_s(DisasContext *ctx, int d)
{
/*
* 0 -> 8
* 1 -> 9
* 2 -> 10
* 3 -> 3
* :
* 7 -> 7
*/
if (d < 3) {
d += 8;
}
return d;
}
/* Include the auto-generated decoder. */
#include "decode-insns.c.inc"
void rx_cpu_dump_state(CPUState *cs, FILE *f, int flags)
{
RXCPU *cpu = RX_CPU(cs);
CPURXState *env = &cpu->env;
int i;
uint32_t psw;
psw = rx_cpu_pack_psw(env);
qemu_fprintf(f, "pc=0x%08x psw=0x%08x\n",
env->pc, psw);
for (i = 0; i < 16; i += 4) {
qemu_fprintf(f, "r%d=0x%08x r%d=0x%08x r%d=0x%08x r%d=0x%08x\n",
i, env->regs[i], i + 1, env->regs[i + 1],
i + 2, env->regs[i + 2], i + 3, env->regs[i + 3]);
}
}
static bool use_goto_tb(DisasContext *dc, target_ulong dest)
{
if (unlikely(dc->base.singlestep_enabled)) {
return false;
} else {
return true;
}
}
static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest)
{
if (use_goto_tb(dc, dest)) {
tcg_gen_goto_tb(n);
tcg_gen_movi_i32(cpu_pc, dest);
tcg_gen_exit_tb(dc->base.tb, n);
} else {
tcg_gen_movi_i32(cpu_pc, dest);
if (dc->base.singlestep_enabled) {
gen_helper_debug(cpu_env);
} else {
tcg_gen_lookup_and_goto_ptr();
}
}
dc->base.is_jmp = DISAS_NORETURN;
}
/* generic load wrapper */
static inline void rx_gen_ld(unsigned int size, TCGv reg, TCGv mem)
{
tcg_gen_qemu_ld_i32(reg, mem, 0, size | MO_SIGN | MO_TE);
}
/* unsigned load wrapper */
static inline void rx_gen_ldu(unsigned int size, TCGv reg, TCGv mem)
{
tcg_gen_qemu_ld_i32(reg, mem, 0, size | MO_TE);
}
/* generic store wrapper */
static inline void rx_gen_st(unsigned int size, TCGv reg, TCGv mem)
{
tcg_gen_qemu_st_i32(reg, mem, 0, size | MO_TE);
}
/* [ri, rb] */
static inline void rx_gen_regindex(DisasContext *ctx, TCGv mem,
int size, int ri, int rb)
{
tcg_gen_shli_i32(mem, cpu_regs[ri], size);
tcg_gen_add_i32(mem, mem, cpu_regs[rb]);
}
/* dsp[reg] */
static inline TCGv rx_index_addr(DisasContext *ctx, TCGv mem,
int ld, int size, int reg)
{
uint32_t dsp;
tcg_debug_assert(ld < 3);
switch (ld) {
case 0:
return cpu_regs[reg];
case 1:
dsp = cpu_ldub_code(ctx->env, ctx->base.pc_next) << size;
tcg_gen_addi_i32(mem, cpu_regs[reg], dsp);
ctx->base.pc_next += 1;
return mem;
case 2:
dsp = cpu_lduw_code(ctx->env, ctx->base.pc_next) << size;
tcg_gen_addi_i32(mem, cpu_regs[reg], dsp);
ctx->base.pc_next += 2;
return mem;
}
return NULL;
}
static inline MemOp mi_to_mop(unsigned mi)
{
static const MemOp mop[5] = { MO_SB, MO_SW, MO_UL, MO_UW, MO_UB };
tcg_debug_assert(mi < 5);
return mop[mi];
}
/* load source operand */
static inline TCGv rx_load_source(DisasContext *ctx, TCGv mem,
int ld, int mi, int rs)
{
TCGv addr;
MemOp mop;
if (ld < 3) {
mop = mi_to_mop(mi);
addr = rx_index_addr(ctx, mem, ld, mop & MO_SIZE, rs);
tcg_gen_qemu_ld_i32(mem, addr, 0, mop | MO_TE);
return mem;
} else {
return cpu_regs[rs];
}
}
/* Processor mode check */
static int is_privileged(DisasContext *ctx, int is_exception)
{
if (FIELD_EX32(ctx->base.tb->flags, PSW, PM)) {
if (is_exception) {
gen_helper_raise_privilege_violation(cpu_env);
}
return 0;
} else {
return 1;
}
}
/* generate QEMU condition */
static void psw_cond(DisasCompare *dc, uint32_t cond)
{
tcg_debug_assert(cond < 16);
switch (cond) {
case 0: /* z */
dc->cond = TCG_COND_EQ;
dc->value = cpu_psw_z;
break;
case 1: /* nz */
dc->cond = TCG_COND_NE;
dc->value = cpu_psw_z;
break;
case 2: /* c */
dc->cond = TCG_COND_NE;
dc->value = cpu_psw_c;
break;
case 3: /* nc */
dc->cond = TCG_COND_EQ;
dc->value = cpu_psw_c;
break;
case 4: /* gtu (C& ~Z) == 1 */
case 5: /* leu (C& ~Z) == 0 */
tcg_gen_setcondi_i32(TCG_COND_NE, dc->temp, cpu_psw_z, 0);
tcg_gen_and_i32(dc->temp, dc->temp, cpu_psw_c);
dc->cond = (cond == 4) ? TCG_COND_NE : TCG_COND_EQ;
dc->value = dc->temp;
break;
case 6: /* pz (S == 0) */
dc->cond = TCG_COND_GE;
dc->value = cpu_psw_s;
break;
case 7: /* n (S == 1) */
dc->cond = TCG_COND_LT;
dc->value = cpu_psw_s;
break;
case 8: /* ge (S^O)==0 */
case 9: /* lt (S^O)==1 */
tcg_gen_xor_i32(dc->temp, cpu_psw_o, cpu_psw_s);
dc->cond = (cond == 8) ? TCG_COND_GE : TCG_COND_LT;
dc->value = dc->temp;
break;
case 10: /* gt ((S^O)|Z)==0 */
case 11: /* le ((S^O)|Z)==1 */
tcg_gen_xor_i32(dc->temp, cpu_psw_o, cpu_psw_s);
tcg_gen_sari_i32(dc->temp, dc->temp, 31);
tcg_gen_andc_i32(dc->temp, cpu_psw_z, dc->temp);
dc->cond = (cond == 10) ? TCG_COND_NE : TCG_COND_EQ;
dc->value = dc->temp;
break;
case 12: /* o */
dc->cond = TCG_COND_LT;
dc->value = cpu_psw_o;
break;
case 13: /* no */
dc->cond = TCG_COND_GE;
dc->value = cpu_psw_o;
break;
case 14: /* always true */
dc->cond = TCG_COND_ALWAYS;
dc->value = dc->temp;
break;
case 15: /* always false */
dc->cond = TCG_COND_NEVER;
dc->value = dc->temp;
break;
}
}
static void move_from_cr(TCGv ret, int cr, uint32_t pc)
{
TCGv z = tcg_const_i32(0);
switch (cr) {
case 0: /* PSW */
gen_helper_pack_psw(ret, cpu_env);
break;
case 1: /* PC */
tcg_gen_movi_i32(ret, pc);
break;
case 2: /* USP */
tcg_gen_movcond_i32(TCG_COND_NE, ret,
cpu_psw_u, z, cpu_sp, cpu_usp);
break;
case 3: /* FPSW */
tcg_gen_mov_i32(ret, cpu_fpsw);
break;
case 8: /* BPSW */
tcg_gen_mov_i32(ret, cpu_bpsw);
break;
case 9: /* BPC */
tcg_gen_mov_i32(ret, cpu_bpc);
break;
case 10: /* ISP */
tcg_gen_movcond_i32(TCG_COND_EQ, ret,
cpu_psw_u, z, cpu_sp, cpu_isp);
break;
case 11: /* FINTV */
tcg_gen_mov_i32(ret, cpu_fintv);
break;
case 12: /* INTB */
tcg_gen_mov_i32(ret, cpu_intb);
break;
default:
qemu_log_mask(LOG_GUEST_ERROR, "Unimplement control register %d", cr);
/* Unimplement registers return 0 */
tcg_gen_movi_i32(ret, 0);
break;
}
tcg_temp_free(z);
}
static void move_to_cr(DisasContext *ctx, TCGv val, int cr)
{
TCGv z;
if (cr >= 8 && !is_privileged(ctx, 0)) {
/* Some control registers can only be written in privileged mode. */
qemu_log_mask(LOG_GUEST_ERROR,
"disallow control register write %s", rx_crname(cr));
return;
}
z = tcg_const_i32(0);
switch (cr) {
case 0: /* PSW */
gen_helper_set_psw(cpu_env, val);
break;
/* case 1: to PC not supported */
case 2: /* USP */
tcg_gen_mov_i32(cpu_usp, val);
tcg_gen_movcond_i32(TCG_COND_NE, cpu_sp,
cpu_psw_u, z, cpu_usp, cpu_sp);
break;
case 3: /* FPSW */
gen_helper_set_fpsw(cpu_env, val);
break;
case 8: /* BPSW */
tcg_gen_mov_i32(cpu_bpsw, val);
break;
case 9: /* BPC */
tcg_gen_mov_i32(cpu_bpc, val);
break;
case 10: /* ISP */
tcg_gen_mov_i32(cpu_isp, val);
/* if PSW.U is 0, copy isp to r0 */
tcg_gen_movcond_i32(TCG_COND_EQ, cpu_sp,
cpu_psw_u, z, cpu_isp, cpu_sp);
break;
case 11: /* FINTV */
tcg_gen_mov_i32(cpu_fintv, val);
break;
case 12: /* INTB */
tcg_gen_mov_i32(cpu_intb, val);
break;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"Unimplement control register %d", cr);
break;
}
tcg_temp_free(z);
}
static void push(TCGv val)
{
tcg_gen_subi_i32(cpu_sp, cpu_sp, 4);
rx_gen_st(MO_32, val, cpu_sp);
}
static void pop(TCGv ret)
{
rx_gen_ld(MO_32, ret, cpu_sp);
tcg_gen_addi_i32(cpu_sp, cpu_sp, 4);
}
/* mov.<bwl> rs,dsp5[rd] */
static bool trans_MOV_rm(DisasContext *ctx, arg_MOV_rm *a)
{
TCGv mem;
mem = tcg_temp_new();
tcg_gen_addi_i32(mem, cpu_regs[a->rd], a->dsp << a->sz);
rx_gen_st(a->sz, cpu_regs[a->rs], mem);
tcg_temp_free(mem);
return true;
}
/* mov.<bwl> dsp5[rs],rd */
static bool trans_MOV_mr(DisasContext *ctx, arg_MOV_mr *a)
{
TCGv mem;
mem = tcg_temp_new();
tcg_gen_addi_i32(mem, cpu_regs[a->rs], a->dsp << a->sz);
rx_gen_ld(a->sz, cpu_regs[a->rd], mem);
tcg_temp_free(mem);
return true;
}
/* mov.l #uimm4,rd */
/* mov.l #uimm8,rd */
/* mov.l #imm,rd */
static bool trans_MOV_ir(DisasContext *ctx, arg_MOV_ir *a)
{
tcg_gen_movi_i32(cpu_regs[a->rd], a->imm);
return true;
}
/* mov.<bwl> #uimm8,dsp[rd] */
/* mov.<bwl> #imm, dsp[rd] */
static bool trans_MOV_im(DisasContext *ctx, arg_MOV_im *a)
{
TCGv imm, mem;
imm = tcg_const_i32(a->imm);
mem = tcg_temp_new();
tcg_gen_addi_i32(mem, cpu_regs[a->rd], a->dsp << a->sz);
rx_gen_st(a->sz, imm, mem);
tcg_temp_free(imm);
tcg_temp_free(mem);
return true;
}
/* mov.<bwl> [ri,rb],rd */
static bool trans_MOV_ar(DisasContext *ctx, arg_MOV_ar *a)
{
TCGv mem;
mem = tcg_temp_new();
rx_gen_regindex(ctx, mem, a->sz, a->ri, a->rb);
rx_gen_ld(a->sz, cpu_regs[a->rd], mem);
tcg_temp_free(mem);
return true;
}
/* mov.<bwl> rd,[ri,rb] */
static bool trans_MOV_ra(DisasContext *ctx, arg_MOV_ra *a)
{
TCGv mem;
mem = tcg_temp_new();
rx_gen_regindex(ctx, mem, a->sz, a->ri, a->rb);
rx_gen_st(a->sz, cpu_regs[a->rs], mem);
tcg_temp_free(mem);
return true;
}
/* mov.<bwl> dsp[rs],dsp[rd] */
/* mov.<bwl> rs,dsp[rd] */
/* mov.<bwl> dsp[rs],rd */
/* mov.<bwl> rs,rd */
static bool trans_MOV_mm(DisasContext *ctx, arg_MOV_mm *a)
{
static void (* const mov[])(TCGv ret, TCGv arg) = {
tcg_gen_ext8s_i32, tcg_gen_ext16s_i32, tcg_gen_mov_i32,
};
TCGv tmp, mem, addr;
if (a->lds == 3 && a->ldd == 3) {
/* mov.<bwl> rs,rd */
mov[a->sz](cpu_regs[a->rd], cpu_regs[a->rs]);
return true;
}
mem = tcg_temp_new();
if (a->lds == 3) {
/* mov.<bwl> rs,dsp[rd] */
addr = rx_index_addr(ctx, mem, a->ldd, a->sz, a->rs);
rx_gen_st(a->sz, cpu_regs[a->rd], addr);
} else if (a->ldd == 3) {
/* mov.<bwl> dsp[rs],rd */
addr = rx_index_addr(ctx, mem, a->lds, a->sz, a->rs);
rx_gen_ld(a->sz, cpu_regs[a->rd], addr);
} else {
/* mov.<bwl> dsp[rs],dsp[rd] */
tmp = tcg_temp_new();
addr = rx_index_addr(ctx, mem, a->lds, a->sz, a->rs);
rx_gen_ld(a->sz, tmp, addr);
addr = rx_index_addr(ctx, mem, a->ldd, a->sz, a->rd);
rx_gen_st(a->sz, tmp, addr);
tcg_temp_free(tmp);
}
tcg_temp_free(mem);
return true;
}
/* mov.<bwl> rs,[rd+] */
/* mov.<bwl> rs,[-rd] */
static bool trans_MOV_rp(DisasContext *ctx, arg_MOV_rp *a)
{
TCGv val;
val = tcg_temp_new();
tcg_gen_mov_i32(val, cpu_regs[a->rs]);
if (a->ad == 1) {
tcg_gen_subi_i32(cpu_regs[a->rd], cpu_regs[a->rd], 1 << a->sz);
}
rx_gen_st(a->sz, val, cpu_regs[a->rd]);
if (a->ad == 0) {
tcg_gen_addi_i32(cpu_regs[a->rd], cpu_regs[a->rd], 1 << a->sz);
}
tcg_temp_free(val);
return true;
}
/* mov.<bwl> [rd+],rs */
/* mov.<bwl> [-rd],rs */
static bool trans_MOV_pr(DisasContext *ctx, arg_MOV_pr *a)
{
TCGv val;
val = tcg_temp_new();
if (a->ad == 1) {
tcg_gen_subi_i32(cpu_regs[a->rd], cpu_regs[a->rd], 1 << a->sz);
}
rx_gen_ld(a->sz, val, cpu_regs[a->rd]);
if (a->ad == 0) {
tcg_gen_addi_i32(cpu_regs[a->rd], cpu_regs[a->rd], 1 << a->sz);
}
tcg_gen_mov_i32(cpu_regs[a->rs], val);
tcg_temp_free(val);
return true;
}
/* movu.<bw> dsp5[rs],rd */
/* movu.<bw> dsp[rs],rd */
static bool trans_MOVU_mr(DisasContext *ctx, arg_MOVU_mr *a)
{
TCGv mem;
mem = tcg_temp_new();
tcg_gen_addi_i32(mem, cpu_regs[a->rs], a->dsp << a->sz);
rx_gen_ldu(a->sz, cpu_regs[a->rd], mem);
tcg_temp_free(mem);
return true;
}
/* movu.<bw> rs,rd */
static bool trans_MOVU_rr(DisasContext *ctx, arg_MOVU_rr *a)
{
static void (* const ext[])(TCGv ret, TCGv arg) = {
tcg_gen_ext8u_i32, tcg_gen_ext16u_i32,
};
ext[a->sz](cpu_regs[a->rd], cpu_regs[a->rs]);
return true;
}
/* movu.<bw> [ri,rb],rd */
static bool trans_MOVU_ar(DisasContext *ctx, arg_MOVU_ar *a)
{
TCGv mem;
mem = tcg_temp_new();
rx_gen_regindex(ctx, mem, a->sz, a->ri, a->rb);
rx_gen_ldu(a->sz, cpu_regs[a->rd], mem);
tcg_temp_free(mem);
return true;
}
/* movu.<bw> [rd+],rs */
/* mov.<bw> [-rd],rs */
static bool trans_MOVU_pr(DisasContext *ctx, arg_MOVU_pr *a)
{
TCGv val;
val = tcg_temp_new();
if (a->ad == 1) {
tcg_gen_subi_i32(cpu_regs[a->rd], cpu_regs[a->rd], 1 << a->sz);
}
rx_gen_ldu(a->sz, val, cpu_regs[a->rd]);
if (a->ad == 0) {
tcg_gen_addi_i32(cpu_regs[a->rd], cpu_regs[a->rd], 1 << a->sz);
}
tcg_gen_mov_i32(cpu_regs[a->rs], val);
tcg_temp_free(val);
return true;
}
/* pop rd */
static bool trans_POP(DisasContext *ctx, arg_POP *a)
{
/* mov.l [r0+], rd */
arg_MOV_rp mov_a;
mov_a.rd = 0;
mov_a.rs = a->rd;
mov_a.ad = 0;
mov_a.sz = MO_32;
trans_MOV_pr(ctx, &mov_a);
return true;
}
/* popc cr */
static bool trans_POPC(DisasContext *ctx, arg_POPC *a)
{
TCGv val;
val = tcg_temp_new();
pop(val);
move_to_cr(ctx, val, a->cr);
if (a->cr == 0 && is_privileged(ctx, 0)) {
/* PSW.I may be updated here. exit TB. */
ctx->base.is_jmp = DISAS_UPDATE;
}
tcg_temp_free(val);
return true;
}
/* popm rd-rd2 */
static bool trans_POPM(DisasContext *ctx, arg_POPM *a)
{
int r;
if (a->rd == 0 || a->rd >= a->rd2) {
qemu_log_mask(LOG_GUEST_ERROR,
"Invalid register ranges r%d-r%d", a->rd, a->rd2);
}
r = a->rd;
while (r <= a->rd2 && r < 16) {
pop(cpu_regs[r++]);
}
return true;
}
/* push.<bwl> rs */
static bool trans_PUSH_r(DisasContext *ctx, arg_PUSH_r *a)
{
TCGv val;
val = tcg_temp_new();
tcg_gen_mov_i32(val, cpu_regs[a->rs]);
tcg_gen_subi_i32(cpu_sp, cpu_sp, 4);
rx_gen_st(a->sz, val, cpu_sp);
tcg_temp_free(val);
return true;
}
/* push.<bwl> dsp[rs] */
static bool trans_PUSH_m(DisasContext *ctx, arg_PUSH_m *a)
{
TCGv mem, val, addr;
mem = tcg_temp_new();
val = tcg_temp_new();
addr = rx_index_addr(ctx, mem, a->ld, a->sz, a->rs);
rx_gen_ld(a->sz, val, addr);
tcg_gen_subi_i32(cpu_sp, cpu_sp, 4);
rx_gen_st(a->sz, val, cpu_sp);
tcg_temp_free(mem);
tcg_temp_free(val);
return true;
}
/* pushc rx */
static bool trans_PUSHC(DisasContext *ctx, arg_PUSHC *a)
{
TCGv val;
val = tcg_temp_new();
move_from_cr(val, a->cr, ctx->pc);
push(val);
tcg_temp_free(val);
return true;
}
/* pushm rs-rs2 */
static bool trans_PUSHM(DisasContext *ctx, arg_PUSHM *a)
{
int r;
if (a->rs == 0 || a->rs >= a->rs2) {
qemu_log_mask(LOG_GUEST_ERROR,
"Invalid register ranges r%d-r%d", a->rs, a->rs2);
}
r = a->rs2;
while (r >= a->rs && r >= 0) {
push(cpu_regs[r--]);
}
return true;
}
/* xchg rs,rd */
static bool trans_XCHG_rr(DisasContext *ctx, arg_XCHG_rr *a)
{
TCGv tmp;
tmp = tcg_temp_new();
tcg_gen_mov_i32(tmp, cpu_regs[a->rs]);
tcg_gen_mov_i32(cpu_regs[a->rs], cpu_regs[a->rd]);
tcg_gen_mov_i32(cpu_regs[a->rd], tmp);
tcg_temp_free(tmp);
return true;
}
/* xchg dsp[rs].<mi>,rd */
static bool trans_XCHG_mr(DisasContext *ctx, arg_XCHG_mr *a)
{
TCGv mem, addr;
mem = tcg_temp_new();
switch (a->mi) {
case 0: /* dsp[rs].b */
case 1: /* dsp[rs].w */
case 2: /* dsp[rs].l */
addr = rx_index_addr(ctx, mem, a->ld, a->mi, a->rs);
break;
case 3: /* dsp[rs].uw */
case 4: /* dsp[rs].ub */
addr = rx_index_addr(ctx, mem, a->ld, 4 - a->mi, a->rs);
break;
default:
g_assert_not_reached();
}
tcg_gen_atomic_xchg_i32(cpu_regs[a->rd], addr, cpu_regs[a->rd],
0, mi_to_mop(a->mi));
tcg_temp_free(mem);
return true;
}
static inline void stcond(TCGCond cond, int rd, int imm)
{
TCGv z;
TCGv _imm;
z = tcg_const_i32(0);
_imm = tcg_const_i32(imm);
tcg_gen_movcond_i32(cond, cpu_regs[rd], cpu_psw_z, z,
_imm, cpu_regs[rd]);
tcg_temp_free(z);
tcg_temp_free(_imm);
}
/* stz #imm,rd */
static bool trans_STZ(DisasContext *ctx, arg_STZ *a)
{
stcond(TCG_COND_EQ, a->rd, a->imm);
return true;
}
/* stnz #imm,rd */
static bool trans_STNZ(DisasContext *ctx, arg_STNZ *a)
{
stcond(TCG_COND_NE, a->rd, a->imm);
return true;
}
/* sccnd.<bwl> rd */
/* sccnd.<bwl> dsp:[rd] */
static bool trans_SCCnd(DisasContext *ctx, arg_SCCnd *a)
{
DisasCompare dc;
TCGv val, mem, addr;
dc.temp = tcg_temp_new();
psw_cond(&dc, a->cd);
if (a->ld < 3) {
val = tcg_temp_new();
mem = tcg_temp_new();
tcg_gen_setcondi_i32(dc.cond, val, dc.value, 0);
addr = rx_index_addr(ctx, mem, a->sz, a->ld, a->rd);
rx_gen_st(a->sz, val, addr);
tcg_temp_free(val);
tcg_temp_free(mem);
} else {
tcg_gen_setcondi_i32(dc.cond, cpu_regs[a->rd], dc.value, 0);
}
tcg_temp_free(dc.temp);
return true;
}
/* rtsd #imm */
static bool trans_RTSD_i(DisasContext *ctx, arg_RTSD_i *a)
{
tcg_gen_addi_i32(cpu_sp, cpu_sp, a->imm << 2);
pop(cpu_pc);
ctx->base.is_jmp = DISAS_JUMP;
return true;
}
/* rtsd #imm, rd-rd2 */
static bool trans_RTSD_irr(DisasContext *ctx, arg_RTSD_irr *a)
{
int dst;
int adj;
if (a->rd2 >= a->rd) {
adj = a->imm - (a->rd2 - a->rd + 1);
} else {
adj = a->imm - (15 - a->rd + 1);
}
tcg_gen_addi_i32(cpu_sp, cpu_sp, adj << 2);
dst = a->rd;
while (dst <= a->rd2 && dst < 16) {
pop(cpu_regs[dst++]);
}
pop(cpu_pc);
ctx->base.is_jmp = DISAS_JUMP;
return true;
}
typedef void (*op2fn)(TCGv ret, TCGv arg1);
typedef void (*op3fn)(TCGv ret, TCGv arg1, TCGv arg2);
static inline void rx_gen_op_rr(op2fn opr, int dst, int src)
{
opr(cpu_regs[dst], cpu_regs[src]);
}
static inline void rx_gen_op_rrr(op3fn opr, int dst, int src, int src2)
{
opr(cpu_regs[dst], cpu_regs[src], cpu_regs[src2]);
}
static inline void rx_gen_op_irr(op3fn opr, int dst, int src, uint32_t src2)
{
TCGv imm = tcg_const_i32(src2);
opr(cpu_regs[dst], cpu_regs[src], imm);
tcg_temp_free(imm);
}
static inline void rx_gen_op_mr(op3fn opr, DisasContext *ctx,
int dst, int src, int ld, int mi)
{
TCGv val, mem;
mem = tcg_temp_new();
val = rx_load_source(ctx, mem, ld, mi, src);
opr(cpu_regs[dst], cpu_regs[dst], val);
tcg_temp_free(mem);
}
static void rx_and(TCGv ret, TCGv arg1, TCGv arg2)
{
tcg_gen_and_i32(cpu_psw_s, arg1, arg2);
tcg_gen_mov_i32(cpu_psw_z, cpu_psw_s);
tcg_gen_mov_i32(ret, cpu_psw_s);
}
/* and #uimm:4, rd */
/* and #imm, rd */
static bool trans_AND_ir(DisasContext *ctx, arg_AND_ir *a)
{
rx_gen_op_irr(rx_and, a->rd, a->rd, a->imm);
return true;
}
/* and dsp[rs], rd */
/* and rs,rd */
static bool trans_AND_mr(DisasContext *ctx, arg_AND_mr *a)
{
rx_gen_op_mr(rx_and, ctx, a->rd, a->rs, a->ld, a->mi);
return true;
}
/* and rs,rs2,rd */
static bool trans_AND_rrr(DisasContext *ctx, arg_AND_rrr *a)
{
rx_gen_op_rrr(rx_and, a->rd, a->rs, a->rs2);
return true;
}
static void rx_or(TCGv ret, TCGv arg1, TCGv arg2)
{
tcg_gen_or_i32(cpu_psw_s, arg1, arg2);
tcg_gen_mov_i32(cpu_psw_z, cpu_psw_s);
tcg_gen_mov_i32(ret, cpu_psw_s);
}
/* or #uimm:4, rd */
/* or #imm, rd */
static bool trans_OR_ir(DisasContext *ctx, arg_OR_ir *a)
{
rx_gen_op_irr(rx_or, a->rd, a->rd, a->imm);
return true;
}
/* or dsp[rs], rd */
/* or rs,rd */
static bool trans_OR_mr(DisasContext *ctx, arg_OR_mr *a)
{
rx_gen_op_mr(rx_or, ctx, a->rd, a->rs, a->ld, a->mi);
return true;
}
/* or rs,rs2,rd */
static bool trans_OR_rrr(DisasContext *ctx, arg_OR_rrr *a)
{
rx_gen_op_rrr(rx_or, a->rd, a->rs, a->rs2);
return true;
}
static void rx_xor(TCGv ret, TCGv arg1, TCGv arg2)
{
tcg_gen_xor_i32(cpu_psw_s, arg1, arg2);
tcg_gen_mov_i32(cpu_psw_z, cpu_psw_s);
tcg_gen_mov_i32(ret, cpu_psw_s);
}
/* xor #imm, rd */
static bool trans_XOR_ir(DisasContext *ctx, arg_XOR_ir *a)
{
rx_gen_op_irr(rx_xor, a->rd, a->rd, a->imm);
return true;
}
/* xor dsp[rs], rd */
/* xor rs,rd */
static bool trans_XOR_mr(DisasContext *ctx, arg_XOR_mr *a)
{
rx_gen_op_mr(rx_xor, ctx, a->rd, a->rs, a->ld, a->mi);
return true;
}
static void rx_tst(TCGv ret, TCGv arg1, TCGv arg2)
{
tcg_gen_and_i32(cpu_psw_s, arg1, arg2);
tcg_gen_mov_i32(cpu_psw_z, cpu_psw_s);
}
/* tst #imm, rd */
static bool trans_TST_ir(DisasContext *ctx, arg_TST_ir *a)
{
rx_gen_op_irr(rx_tst, a->rd, a->rd, a->imm);
return true;
}
/* tst dsp[rs], rd */
/* tst rs, rd */
static bool trans_TST_mr(DisasContext *ctx, arg_TST_mr *a)
{
rx_gen_op_mr(rx_tst, ctx, a->rd, a->rs, a->ld, a->mi);
return true;
}
static void rx_not(TCGv ret, TCGv arg1)
{
tcg_gen_not_i32(ret, arg1);
tcg_gen_mov_i32(cpu_psw_z, ret);
tcg_gen_mov_i32(cpu_psw_s, ret);
}
/* not rd */
/* not rs, rd */
static bool trans_NOT_rr(DisasContext *ctx, arg_NOT_rr *a)
{
rx_gen_op_rr(rx_not, a->rd, a->rs);
return true;
}
static void rx_neg(TCGv ret, TCGv arg1)
{
tcg_gen_setcondi_i32(TCG_COND_EQ, cpu_psw_o, arg1, 0x80000000);
tcg_gen_neg_i32(ret, arg1);
tcg_gen_setcondi_i32(TCG_COND_EQ, cpu_psw_c, ret, 0);
tcg_gen_mov_i32(cpu_psw_z, ret);
tcg_gen_mov_i32(cpu_psw_s, ret);
}
/* neg rd */
/* neg rs, rd */
static bool trans_NEG_rr(DisasContext *ctx, arg_NEG_rr *a)
{
rx_gen_op_rr(rx_neg, a->rd, a->rs);
return true;
}
/* ret = arg1 + arg2 + psw_c */
static void rx_adc(TCGv ret, TCGv arg1, TCGv arg2)
{
TCGv z;
z = tcg_const_i32(0);
tcg_gen_add2_i32(cpu_psw_s, cpu_psw_c, arg1, z, cpu_psw_c, z);
tcg_gen_add2_i32(cpu_psw_s, cpu_psw_c, cpu_psw_s, cpu_psw_c, arg2, z);
tcg_gen_mov_i32(cpu_psw_z, cpu_psw_s);
tcg_gen_xor_i32(cpu_psw_o, cpu_psw_s, arg1);
tcg_gen_xor_i32(z, arg1, arg2);
tcg_gen_andc_i32(cpu_psw_o, cpu_psw_o, z);
tcg_gen_mov_i32(ret, cpu_psw_s);
tcg_temp_free(z);
}
/* adc #imm, rd */
static bool trans_ADC_ir(DisasContext *ctx, arg_ADC_ir *a)
{
rx_gen_op_irr(rx_adc, a->rd, a->rd, a->imm);
return true;
}
/* adc rs, rd */
static bool trans_ADC_rr(DisasContext *ctx, arg_ADC_rr *a)
{
rx_gen_op_rrr(rx_adc, a->rd, a->rd, a->rs);
return true;
}
/* adc dsp[rs], rd */
static bool trans_ADC_mr(DisasContext *ctx, arg_ADC_mr *a)
{
/* mi only 2 */
if (a->mi != 2) {
return false;
}
rx_gen_op_mr(rx_adc, ctx, a->rd, a->rs, a->ld, a->mi);
return true;
}
/* ret = arg1 + arg2 */
static void rx_add(TCGv ret, TCGv arg1, TCGv arg2)
{
TCGv z;
z = tcg_const_i32(0);
tcg_gen_add2_i32(cpu_psw_s, cpu_psw_c, arg1, z, arg2, z);
tcg_gen_mov_i32(cpu_psw_z, cpu_psw_s);
tcg_gen_xor_i32(cpu_psw_o, cpu_psw_s, arg1);
tcg_gen_xor_i32(z, arg1, arg2);
tcg_gen_andc_i32(cpu_psw_o, cpu_psw_o, z);
tcg_gen_mov_i32(ret, cpu_psw_s);
tcg_temp_free(z);
}
/* add #uimm4, rd */
/* add #imm, rs, rd */
static bool trans_ADD_irr(DisasContext *ctx, arg_ADD_irr *a)
{
rx_gen_op_irr(rx_add, a->rd, a->rs2, a->imm);
return true;
}
/* add rs, rd */
/* add dsp[rs], rd */
static bool trans_ADD_mr(DisasContext *ctx, arg_ADD_mr *a)
{
rx_gen_op_mr(rx_add, ctx, a->rd, a->rs, a->ld, a->mi);
return true;
}
/* add rs, rs2, rd */
static bool trans_ADD_rrr(DisasContext *ctx, arg_ADD_rrr *a)
{
rx_gen_op_rrr(rx_add, a->rd, a->rs, a->rs2);
return true;
}
/* ret = arg1 - arg2 */
static void rx_sub(TCGv ret, TCGv arg1, TCGv arg2)
{
TCGv temp;
tcg_gen_sub_i32(cpu_psw_s, arg1, arg2);
tcg_gen_mov_i32(cpu_psw_z, cpu_psw_s);
tcg_gen_setcond_i32(TCG_COND_GEU, cpu_psw_c, arg1, arg2);
tcg_gen_xor_i32(cpu_psw_o, cpu_psw_s, arg1);
temp = tcg_temp_new_i32();
tcg_gen_xor_i32(temp, arg1, arg2);
tcg_gen_and_i32(cpu_psw_o, cpu_psw_o, temp);
tcg_temp_free_i32(temp);
/* CMP not required return */
if (ret) {
tcg_gen_mov_i32(ret, cpu_psw_s);
}
}
static void rx_cmp(TCGv dummy, TCGv arg1, TCGv arg2)
{
rx_sub(NULL, arg1, arg2);
}
/* ret = arg1 - arg2 - !psw_c */
/* -> ret = arg1 + ~arg2 + psw_c */
static void rx_sbb(TCGv ret, TCGv arg1, TCGv arg2)
{
TCGv temp;
temp = tcg_temp_new();
tcg_gen_not_i32(temp, arg2);
rx_adc(ret, arg1, temp);
tcg_temp_free(temp);
}
/* cmp #imm4, rs2 */
/* cmp #imm8, rs2 */
/* cmp #imm, rs2 */
static bool trans_CMP_ir(DisasContext *ctx, arg_CMP_ir *a)
{
rx_gen_op_irr(rx_cmp, 0, a->rs2, a->imm);
return true;
}
/* cmp rs, rs2 */
/* cmp dsp[rs], rs2 */
static bool trans_CMP_mr(DisasContext *ctx, arg_CMP_mr *a)
{
rx_gen_op_mr(rx_cmp, ctx, a->rd, a->rs, a->ld, a->mi);
return true;
}
/* sub #imm4, rd */
static bool trans_SUB_ir(DisasContext *ctx, arg_SUB_ir *a)
{
rx_gen_op_irr(rx_sub, a->rd, a->rd, a->imm);
return true;
}
/* sub rs, rd */
/* sub dsp[rs], rd */
static bool trans_SUB_mr(DisasContext *ctx, arg_SUB_mr *a)
{
rx_gen_op_mr(rx_sub, ctx, a->rd, a->rs, a->ld, a->mi);
return true;
}
/* sub rs2, rs, rd */
static bool trans_SUB_rrr(DisasContext *ctx, arg_SUB_rrr *a)
{
rx_gen_op_rrr(rx_sub, a->rd, a->rs2, a->rs);
return true;
}
/* sbb rs, rd */
static bool trans_SBB_rr(DisasContext *ctx, arg_SBB_rr *a)
{
rx_gen_op_rrr(rx_sbb, a->rd, a->rd, a->rs);
return true;
}
/* sbb dsp[rs], rd */
static bool trans_SBB_mr(DisasContext *ctx, arg_SBB_mr *a)
{
/* mi only 2 */
if (a->mi != 2) {
return false;
}
rx_gen_op_mr(rx_sbb, ctx, a->rd, a->rs, a->ld, a->mi);
return true;
}
static void rx_abs(TCGv ret, TCGv arg1)
{
TCGv neg;
TCGv zero;
neg = tcg_temp_new();
zero = tcg_const_i32(0);
tcg_gen_neg_i32(neg, arg1);
tcg_gen_movcond_i32(TCG_COND_LT, ret, arg1, zero, neg, arg1);
tcg_temp_free(neg);
tcg_temp_free(zero);
}
/* abs rd */
/* abs rs, rd */
static bool trans_ABS_rr(DisasContext *ctx, arg_ABS_rr *a)
{
rx_gen_op_rr(rx_abs, a->rd, a->rs);
return true;
}
/* max #imm, rd */
static bool trans_MAX_ir(DisasContext *ctx, arg_MAX_ir *a)
{
rx_gen_op_irr(tcg_gen_smax_i32, a->rd, a->rd, a->imm);
return true;
}
/* max rs, rd */
/* max dsp[rs], rd */
static bool trans_MAX_mr(DisasContext *ctx, arg_MAX_mr *a)
{
rx_gen_op_mr(tcg_gen_smax_i32, ctx, a->rd, a->rs, a->ld, a->mi);
return true;
}
/* min #imm, rd */
static bool trans_MIN_ir(DisasContext *ctx, arg_MIN_ir *a)
{
rx_gen_op_irr(tcg_gen_smin_i32, a->rd, a->rd, a->imm);
return true;
}
/* min rs, rd */
/* min dsp[rs], rd */
static bool trans_MIN_mr(DisasContext *ctx, arg_MIN_mr *a)
{
rx_gen_op_mr(tcg_gen_smin_i32, ctx, a->rd, a->rs, a->ld, a->mi);
return true;
}
/* mul #uimm4, rd */
/* mul #imm, rd */
static bool trans_MUL_ir(DisasContext *ctx, arg_MUL_ir *a)
{
rx_gen_op_irr(tcg_gen_mul_i32, a->rd, a->rd, a->imm);
return true;
}
/* mul rs, rd */
/* mul dsp[rs], rd */
static bool trans_MUL_mr(DisasContext *ctx, arg_MUL_mr *a)
{
rx_gen_op_mr(tcg_gen_mul_i32, ctx, a->rd, a->rs, a->ld, a->mi);
return true;
}
/* mul rs, rs2, rd */
static bool trans_MUL_rrr(DisasContext *ctx, arg_MUL_rrr *a)
{
rx_gen_op_rrr(tcg_gen_mul_i32, a->rd, a->rs, a->rs2);
return true;
}
/* emul #imm, rd */
static bool trans_EMUL_ir(DisasContext *ctx, arg_EMUL_ir *a)
{
TCGv imm = tcg_const_i32(a->imm);
if (a->rd > 14) {
qemu_log_mask(LOG_GUEST_ERROR, "rd too large %d", a->rd);
}
tcg_gen_muls2_i32(cpu_regs[a->rd], cpu_regs[(a->rd + 1) & 15],
cpu_regs[a->rd], imm);
tcg_temp_free(imm);
return true;
}
/* emul rs, rd */
/* emul dsp[rs], rd */
static bool trans_EMUL_mr(DisasContext *ctx, arg_EMUL_mr *a)
{
TCGv val, mem;
if (a->rd > 14) {
qemu_log_mask(LOG_GUEST_ERROR, "rd too large %d", a->rd);
}
mem = tcg_temp_new();
val = rx_load_source(ctx, mem, a->ld, a->mi, a->rs);
tcg_gen_muls2_i32(cpu_regs[a->rd], cpu_regs[(a->rd + 1) & 15],
cpu_regs[a->rd], val);
tcg_temp_free(mem);
return true;
}
/* emulu #imm, rd */
static bool trans_EMULU_ir(DisasContext *ctx, arg_EMULU_ir *a)
{
TCGv imm = tcg_const_i32(a->imm);
if (a->rd > 14) {
qemu_log_mask(LOG_GUEST_ERROR, "rd too large %d", a->rd);
}
tcg_gen_mulu2_i32(cpu_regs[a->rd], cpu_regs[(a->rd + 1) & 15],
cpu_regs[a->rd], imm);
tcg_temp_free(imm);
return true;
}
/* emulu rs, rd */
/* emulu dsp[rs], rd */
static bool trans_EMULU_mr(DisasContext *ctx, arg_EMULU_mr *a)
{
TCGv val, mem;
if (a->rd > 14) {
qemu_log_mask(LOG_GUEST_ERROR, "rd too large %d", a->rd);
}
mem = tcg_temp_new();
val = rx_load_source(ctx, mem, a->ld, a->mi, a->rs);
tcg_gen_mulu2_i32(cpu_regs[a->rd], cpu_regs[(a->rd + 1) & 15],
cpu_regs[a->rd], val);
tcg_temp_free(mem);
return true;
}
static void rx_div(TCGv ret, TCGv arg1, TCGv arg2)
{
gen_helper_div(ret, cpu_env, arg1, arg2);
}
static void rx_divu(TCGv ret, TCGv arg1, TCGv arg2)
{
gen_helper_divu(ret, cpu_env, arg1, arg2);
}
/* div #imm, rd */
static bool trans_DIV_ir(DisasContext *ctx, arg_DIV_ir *a)
{
rx_gen_op_irr(rx_div, a->rd, a->rd, a->imm);
return true;
}
/* div rs, rd */
/* div dsp[rs], rd */
static bool trans_DIV_mr(DisasContext *ctx, arg_DIV_mr *a)
{
rx_gen_op_mr(rx_div, ctx, a->rd, a->rs, a->ld, a->mi);
return true;
}
/* divu #imm, rd */
static bool trans_DIVU_ir(DisasContext *ctx, arg_DIVU_ir *a)
{
rx_gen_op_irr(rx_divu, a->rd, a->rd, a->imm);
return true;
}
/* divu rs, rd */
/* divu dsp[rs], rd */
static bool trans_DIVU_mr(DisasContext *ctx, arg_DIVU_mr *a)
{
rx_gen_op_mr(rx_divu, ctx, a->rd, a->rs, a->ld, a->mi);
return true;
}
/* shll #imm:5, rd */
/* shll #imm:5, rs2, rd */
static bool trans_SHLL_irr(DisasContext *ctx, arg_SHLL_irr *a)
{
TCGv tmp;
tmp = tcg_temp_new();
if (a->imm) {
tcg_gen_sari_i32(cpu_psw_c, cpu_regs[a->rs2], 32 - a->imm);
tcg_gen_shli_i32(cpu_regs[a->rd], cpu_regs[a->rs2], a->imm);
tcg_gen_setcondi_i32(TCG_COND_EQ, cpu_psw_o, cpu_psw_c, 0);
tcg_gen_setcondi_i32(TCG_COND_EQ, tmp, cpu_psw_c, 0xffffffff);
tcg_gen_or_i32(cpu_psw_o, cpu_psw_o, tmp);
tcg_gen_setcondi_i32(TCG_COND_NE, cpu_psw_c, cpu_psw_c, 0);
} else {
tcg_gen_mov_i32(cpu_regs[a->rd], cpu_regs[a->rs2]);
tcg_gen_movi_i32(cpu_psw_c, 0);
tcg_gen_movi_i32(cpu_psw_o, 0);
}
tcg_gen_mov_i32(cpu_psw_z, cpu_regs[a->rd]);
tcg_gen_mov_i32(cpu_psw_s, cpu_regs[a->rd]);
return true;
}
/* shll rs, rd */
static bool trans_SHLL_rr(DisasContext *ctx, arg_SHLL_rr *a)
{
TCGLabel *noshift, *done;
TCGv count, tmp;
noshift = gen_new_label();
done = gen_new_label();
/* if (cpu_regs[a->rs]) { */
tcg_gen_brcondi_i32(TCG_COND_EQ, cpu_regs[a->rs], 0, noshift);
count = tcg_const_i32(32);
tmp = tcg_temp_new();
tcg_gen_andi_i32(tmp, cpu_regs[a->rs], 31);
tcg_gen_sub_i32(count, count, tmp);
tcg_gen_sar_i32(cpu_psw_c, cpu_regs[a->rd], count);
tcg_gen_shl_i32(cpu_regs[a->rd], cpu_regs[a->rd], tmp);
tcg_gen_setcondi_i32(TCG_COND_EQ, cpu_psw_o, cpu_psw_c, 0);
tcg_gen_setcondi_i32(TCG_COND_EQ, tmp, cpu_psw_c, 0xffffffff);
tcg_gen_or_i32(cpu_psw_o, cpu_psw_o, tmp);
tcg_gen_setcondi_i32(TCG_COND_NE, cpu_psw_c, cpu_psw_c, 0);
tcg_gen_br(done);
/* } else { */
gen_set_label(noshift);
tcg_gen_movi_i32(cpu_psw_c, 0);
tcg_gen_movi_i32(cpu_psw_o, 0);
/* } */
gen_set_label(done);
tcg_gen_mov_i32(cpu_psw_z, cpu_regs[a->rd]);
tcg_gen_mov_i32(cpu_psw_s, cpu_regs[a->rd]);
tcg_temp_free(count);
tcg_temp_free(tmp);
return true;
}
static inline void shiftr_imm(uint32_t rd, uint32_t rs, uint32_t imm,
unsigned int alith)
{
static void (* const gen_sXri[])(TCGv ret, TCGv arg1, int arg2) = {
tcg_gen_shri_i32, tcg_gen_sari_i32,
};
tcg_debug_assert(alith < 2);
if (imm) {
gen_sXri[alith](cpu_regs[rd], cpu_regs[rs], imm - 1);
tcg_gen_andi_i32(cpu_psw_c, cpu_regs[rd], 0x00000001);
gen_sXri[alith](cpu_regs[rd], cpu_regs[rd], 1);
} else {
tcg_gen_mov_i32(cpu_regs[rd], cpu_regs[rs]);
tcg_gen_movi_i32(cpu_psw_c, 0);
}
tcg_gen_movi_i32(cpu_psw_o, 0);
tcg_gen_mov_i32(cpu_psw_z, cpu_regs[rd]);
tcg_gen_mov_i32(cpu_psw_s, cpu_regs[rd]);
}
static inline void shiftr_reg(uint32_t rd, uint32_t rs, unsigned int alith)
{
TCGLabel *noshift, *done;
TCGv count;
static void (* const gen_sXri[])(TCGv ret, TCGv arg1, int arg2) = {
tcg_gen_shri_i32, tcg_gen_sari_i32,
};
static void (* const gen_sXr[])(TCGv ret, TCGv arg1, TCGv arg2) = {
tcg_gen_shr_i32, tcg_gen_sar_i32,
};
tcg_debug_assert(alith < 2);
noshift = gen_new_label();
done = gen_new_label();
count = tcg_temp_new();
/* if (cpu_regs[rs]) { */
tcg_gen_brcondi_i32(TCG_COND_EQ, cpu_regs[rs], 0, noshift);
tcg_gen_andi_i32(count, cpu_regs[rs], 31);
tcg_gen_subi_i32(count, count, 1);
gen_sXr[alith](cpu_regs[rd], cpu_regs[rd], count);
tcg_gen_andi_i32(cpu_psw_c, cpu_regs[rd], 0x00000001);
gen_sXri[alith](cpu_regs[rd], cpu_regs[rd], 1);
tcg_gen_br(done);
/* } else { */
gen_set_label(noshift);
tcg_gen_movi_i32(cpu_psw_c, 0);
/* } */
gen_set_label(done);
tcg_gen_movi_i32(cpu_psw_o, 0);
tcg_gen_mov_i32(cpu_psw_z, cpu_regs[rd]);
tcg_gen_mov_i32(cpu_psw_s, cpu_regs[rd]);
tcg_temp_free(count);
}
/* shar #imm:5, rd */
/* shar #imm:5, rs2, rd */
static bool trans_SHAR_irr(DisasContext *ctx, arg_SHAR_irr *a)
{
shiftr_imm(a->rd, a->rs2, a->imm, 1);
return true;
}
/* shar rs, rd */
static bool trans_SHAR_rr(DisasContext *ctx, arg_SHAR_rr *a)
{
shiftr_reg(a->rd, a->rs, 1);
return true;
}
/* shlr #imm:5, rd */
/* shlr #imm:5, rs2, rd */
static bool trans_SHLR_irr(DisasContext *ctx, arg_SHLR_irr *a)
{
shiftr_imm(a->rd, a->rs2, a->imm, 0);
return true;
}
/* shlr rs, rd */
static bool trans_SHLR_rr(DisasContext *ctx, arg_SHLR_rr *a)
{
shiftr_reg(a->rd, a->rs, 0);
return true;
}
/* rolc rd */
static bool trans_ROLC(DisasContext *ctx, arg_ROLC *a)
{
TCGv tmp;
tmp = tcg_temp_new();
tcg_gen_shri_i32(tmp, cpu_regs[a->rd], 31);
tcg_gen_shli_i32(cpu_regs[a->rd], cpu_regs[a->rd], 1);
tcg_gen_or_i32(cpu_regs[a->rd], cpu_regs[a->rd], cpu_psw_c);
tcg_gen_mov_i32(cpu_psw_c, tmp);
tcg_gen_mov_i32(cpu_psw_z, cpu_regs[a->rd]);
tcg_gen_mov_i32(cpu_psw_s, cpu_regs[a->rd]);
tcg_temp_free(tmp);
return true;
}
/* rorc rd */
static bool trans_RORC(DisasContext *ctx, arg_RORC *a)
{
TCGv tmp;
tmp = tcg_temp_new();
tcg_gen_andi_i32(tmp, cpu_regs[a->rd], 0x00000001);
tcg_gen_shri_i32(cpu_regs[a->rd], cpu_regs[a->rd], 1);
tcg_gen_shli_i32(cpu_psw_c, cpu_psw_c, 31);
tcg_gen_or_i32(cpu_regs[a->rd], cpu_regs[a->rd], cpu_psw_c);
tcg_gen_mov_i32(cpu_psw_c, tmp);
tcg_gen_mov_i32(cpu_psw_z, cpu_regs[a->rd]);
tcg_gen_mov_i32(cpu_psw_s, cpu_regs[a->rd]);
return true;
}
enum {ROTR = 0, ROTL = 1};
enum {ROT_IMM = 0, ROT_REG = 1};
static inline void rx_rot(int ir, int dir, int rd, int src)
{
switch (dir) {
case ROTL:
if (ir == ROT_IMM) {
tcg_gen_rotli_i32(cpu_regs[rd], cpu_regs[rd], src);
} else {
tcg_gen_rotl_i32(cpu_regs[rd], cpu_regs[rd], cpu_regs[src]);
}
tcg_gen_andi_i32(cpu_psw_c, cpu_regs[rd], 0x00000001);
break;
case ROTR:
if (ir == ROT_IMM) {
tcg_gen_rotri_i32(cpu_regs[rd], cpu_regs[rd], src);
} else {
tcg_gen_rotr_i32(cpu_regs[rd], cpu_regs[rd], cpu_regs[src]);
}
tcg_gen_shri_i32(cpu_psw_c, cpu_regs[rd], 31);
break;
}
tcg_gen_mov_i32(cpu_psw_z, cpu_regs[rd]);
tcg_gen_mov_i32(cpu_psw_s, cpu_regs[rd]);
}
/* rotl #imm, rd */
static bool trans_ROTL_ir(DisasContext *ctx, arg_ROTL_ir *a)
{
rx_rot(ROT_IMM, ROTL, a->rd, a->imm);
return true;
}
/* rotl rs, rd */
static bool trans_ROTL_rr(DisasContext *ctx, arg_ROTL_rr *a)
{
rx_rot(ROT_REG, ROTL, a->rd, a->rs);
return true;
}
/* rotr #imm, rd */
static bool trans_ROTR_ir(DisasContext *ctx, arg_ROTR_ir *a)
{
rx_rot(ROT_IMM, ROTR, a->rd, a->imm);
return true;
}
/* rotr rs, rd */
static bool trans_ROTR_rr(DisasContext *ctx, arg_ROTR_rr *a)
{
rx_rot(ROT_REG, ROTR, a->rd, a->rs);
return true;
}
/* revl rs, rd */
static bool trans_REVL(DisasContext *ctx, arg_REVL *a)
{
tcg_gen_bswap32_i32(cpu_regs[a->rd], cpu_regs[a->rs]);
return true;
}
/* revw rs, rd */
static bool trans_REVW(DisasContext *ctx, arg_REVW *a)
{
TCGv tmp;
tmp = tcg_temp_new();
tcg_gen_andi_i32(tmp, cpu_regs[a->rs], 0x00ff00ff);
tcg_gen_shli_i32(tmp, tmp, 8);
tcg_gen_shri_i32(cpu_regs[a->rd], cpu_regs[a->rs], 8);
tcg_gen_andi_i32(cpu_regs[a->rd], cpu_regs[a->rd], 0x00ff00ff);
tcg_gen_or_i32(cpu_regs[a->rd], cpu_regs[a->rd], tmp);
tcg_temp_free(tmp);
return true;
}
/* conditional branch helper */
static void rx_bcnd_main(DisasContext *ctx, int cd, int dst)
{
DisasCompare dc;
TCGLabel *t, *done;
switch (cd) {
case 0 ... 13:
dc.temp = tcg_temp_new();
psw_cond(&dc, cd);
t = gen_new_label();
done = gen_new_label();
tcg_gen_brcondi_i32(dc.cond, dc.value, 0, t);
gen_goto_tb(ctx, 0, ctx->base.pc_next);
tcg_gen_br(done);
gen_set_label(t);
gen_goto_tb(ctx, 1, ctx->pc + dst);
gen_set_label(done);
tcg_temp_free(dc.temp);
break;
case 14:
/* always true case */
gen_goto_tb(ctx, 0, ctx->pc + dst);
break;
case 15:
/* always false case */
/* Nothing do */
break;
}
}
/* beq dsp:3 / bne dsp:3 */
/* beq dsp:8 / bne dsp:8 */
/* bc dsp:8 / bnc dsp:8 */
/* bgtu dsp:8 / bleu dsp:8 */
/* bpz dsp:8 / bn dsp:8 */
/* bge dsp:8 / blt dsp:8 */
/* bgt dsp:8 / ble dsp:8 */
/* bo dsp:8 / bno dsp:8 */
/* beq dsp:16 / bne dsp:16 */
static bool trans_BCnd(DisasContext *ctx, arg_BCnd *a)
{
rx_bcnd_main(ctx, a->cd, a->dsp);
return true;
}
/* bra dsp:3 */
/* bra dsp:8 */
/* bra dsp:16 */
/* bra dsp:24 */
static bool trans_BRA(DisasContext *ctx, arg_BRA *a)
{
rx_bcnd_main(ctx, 14, a->dsp);
return true;
}
/* bra rs */
static bool trans_BRA_l(DisasContext *ctx, arg_BRA_l *a)
{
tcg_gen_addi_i32(cpu_pc, cpu_regs[a->rd], ctx->pc);
ctx->base.is_jmp = DISAS_JUMP;
return true;
}
static inline void rx_save_pc(DisasContext *ctx)
{
TCGv pc = tcg_const_i32(ctx->base.pc_next);
push(pc);
tcg_temp_free(pc);
}
/* jmp rs */
static bool trans_JMP(DisasContext *ctx, arg_JMP *a)
{
tcg_gen_mov_i32(cpu_pc, cpu_regs[a->rs]);
ctx->base.is_jmp = DISAS_JUMP;
return true;
}
/* jsr rs */
static bool trans_JSR(DisasContext *ctx, arg_JSR *a)
{
rx_save_pc(ctx);
tcg_gen_mov_i32(cpu_pc, cpu_regs[a->rs]);
ctx->base.is_jmp = DISAS_JUMP;
return true;
}
/* bsr dsp:16 */
/* bsr dsp:24 */
static bool trans_BSR(DisasContext *ctx, arg_BSR *a)
{
rx_save_pc(ctx);
rx_bcnd_main(ctx, 14, a->dsp);
return true;
}
/* bsr rs */
static bool trans_BSR_l(DisasContext *ctx, arg_BSR_l *a)
{
rx_save_pc(ctx);
tcg_gen_addi_i32(cpu_pc, cpu_regs[a->rd], ctx->pc);
ctx->base.is_jmp = DISAS_JUMP;
return true;
}
/* rts */
static bool trans_RTS(DisasContext *ctx, arg_RTS *a)
{
pop(cpu_pc);
ctx->base.is_jmp = DISAS_JUMP;
return true;
}
/* nop */
static bool trans_NOP(DisasContext *ctx, arg_NOP *a)
{
return true;
}
/* scmpu */
static bool trans_SCMPU(DisasContext *ctx, arg_SCMPU *a)
{
gen_helper_scmpu(cpu_env);
return true;
}
/* smovu */
static bool trans_SMOVU(DisasContext *ctx, arg_SMOVU *a)
{
gen_helper_smovu(cpu_env);
return true;
}
/* smovf */
static bool trans_SMOVF(DisasContext *ctx, arg_SMOVF *a)
{
gen_helper_smovf(cpu_env);
return true;
}
/* smovb */
static bool trans_SMOVB(DisasContext *ctx, arg_SMOVB *a)
{
gen_helper_smovb(cpu_env);
return true;
}
#define STRING(op) \
do { \
TCGv size = tcg_const_i32(a->sz); \
gen_helper_##op(cpu_env, size); \
tcg_temp_free(size); \
} while (0)
/* suntile.<bwl> */
static bool trans_SUNTIL(DisasContext *ctx, arg_SUNTIL *a)
{
STRING(suntil);
return true;
}
/* swhile.<bwl> */
static bool trans_SWHILE(DisasContext *ctx, arg_SWHILE *a)
{
STRING(swhile);
return true;
}
/* sstr.<bwl> */
static bool trans_SSTR(DisasContext *ctx, arg_SSTR *a)
{
STRING(sstr);
return true;
}
/* rmpa.<bwl> */
static bool trans_RMPA(DisasContext *ctx, arg_RMPA *a)
{
STRING(rmpa);
return true;
}
static void rx_mul64hi(TCGv_i64 ret, int rs, int rs2)
{
TCGv_i64 tmp0, tmp1;
tmp0 = tcg_temp_new_i64();
tmp1 = tcg_temp_new_i64();
tcg_gen_ext_i32_i64(tmp0, cpu_regs[rs]);
tcg_gen_sari_i64(tmp0, tmp0, 16);
tcg_gen_ext_i32_i64(tmp1, cpu_regs[rs2]);
tcg_gen_sari_i64(tmp1, tmp1, 16);
tcg_gen_mul_i64(ret, tmp0, tmp1);
tcg_gen_shli_i64(ret, ret, 16);
tcg_temp_free_i64(tmp0);
tcg_temp_free_i64(tmp1);
}
static void rx_mul64lo(TCGv_i64 ret, int rs, int rs2)
{
TCGv_i64 tmp0, tmp1;
tmp0 = tcg_temp_new_i64();
tmp1 = tcg_temp_new_i64();
tcg_gen_ext_i32_i64(tmp0, cpu_regs[rs]);
tcg_gen_ext16s_i64(tmp0, tmp0);
tcg_gen_ext_i32_i64(tmp1, cpu_regs[rs2]);
tcg_gen_ext16s_i64(tmp1, tmp1);
tcg_gen_mul_i64(ret, tmp0, tmp1);
tcg_gen_shli_i64(ret, ret, 16);
tcg_temp_free_i64(tmp0);
tcg_temp_free_i64(tmp1);
}
/* mulhi rs,rs2 */
static bool trans_MULHI(DisasContext *ctx, arg_MULHI *a)
{
rx_mul64hi(cpu_acc, a->rs, a->rs2);
return true;
}
/* mullo rs,rs2 */
static bool trans_MULLO(DisasContext *ctx, arg_MULLO *a)
{
rx_mul64lo(cpu_acc, a->rs, a->rs2);
return true;
}
/* machi rs,rs2 */
static bool trans_MACHI(DisasContext *ctx, arg_MACHI *a)
{
TCGv_i64 tmp;
tmp = tcg_temp_new_i64();
rx_mul64hi(tmp, a->rs, a->rs2);
tcg_gen_add_i64(cpu_acc, cpu_acc, tmp);
tcg_temp_free_i64(tmp);
return true;
}
/* maclo rs,rs2 */
static bool trans_MACLO(DisasContext *ctx, arg_MACLO *a)
{
TCGv_i64 tmp;
tmp = tcg_temp_new_i64();
rx_mul64lo(tmp, a->rs, a->rs2);
tcg_gen_add_i64(cpu_acc, cpu_acc, tmp);
tcg_temp_free_i64(tmp);
return true;
}
/* mvfachi rd */
static bool trans_MVFACHI(DisasContext *ctx, arg_MVFACHI *a)
{
tcg_gen_extrh_i64_i32(cpu_regs[a->rd], cpu_acc);
return true;
}
/* mvfacmi rd */
static bool trans_MVFACMI(DisasContext *ctx, arg_MVFACMI *a)
{
TCGv_i64 rd64;
rd64 = tcg_temp_new_i64();
tcg_gen_extract_i64(rd64, cpu_acc, 16, 32);
tcg_gen_extrl_i64_i32(cpu_regs[a->rd], rd64);
tcg_temp_free_i64(rd64);
return true;
}
/* mvtachi rs */
static bool trans_MVTACHI(DisasContext *ctx, arg_MVTACHI *a)
{
TCGv_i64 rs64;
rs64 = tcg_temp_new_i64();
tcg_gen_extu_i32_i64(rs64, cpu_regs[a->rs]);
tcg_gen_deposit_i64(cpu_acc, cpu_acc, rs64, 32, 32);
tcg_temp_free_i64(rs64);
return true;
}
/* mvtaclo rs */
static bool trans_MVTACLO(DisasContext *ctx, arg_MVTACLO *a)
{
TCGv_i64 rs64;
rs64 = tcg_temp_new_i64();
tcg_gen_extu_i32_i64(rs64, cpu_regs[a->rs]);
tcg_gen_deposit_i64(cpu_acc, cpu_acc, rs64, 0, 32);
tcg_temp_free_i64(rs64);
return true;
}
/* racw #imm */
static bool trans_RACW(DisasContext *ctx, arg_RACW *a)
{
TCGv imm = tcg_const_i32(a->imm + 1);
gen_helper_racw(cpu_env, imm);
tcg_temp_free(imm);
return true;
}
/* sat rd */
static bool trans_SAT(DisasContext *ctx, arg_SAT *a)
{
TCGv tmp, z;
tmp = tcg_temp_new();
z = tcg_const_i32(0);
/* S == 1 -> 0xffffffff / S == 0 -> 0x00000000 */
tcg_gen_sari_i32(tmp, cpu_psw_s, 31);
/* S == 1 -> 0x7fffffff / S == 0 -> 0x80000000 */
tcg_gen_xori_i32(tmp, tmp, 0x80000000);
tcg_gen_movcond_i32(TCG_COND_LT, cpu_regs[a->rd],
cpu_psw_o, z, tmp, cpu_regs[a->rd]);
tcg_temp_free(tmp);
tcg_temp_free(z);
return true;
}
/* satr */
static bool trans_SATR(DisasContext *ctx, arg_SATR *a)
{
gen_helper_satr(cpu_env);
return true;
}
#define cat3(a, b, c) a##b##c
#define FOP(name, op) \
static bool cat3(trans_, name, _ir)(DisasContext *ctx, \
cat3(arg_, name, _ir) * a) \
{ \
TCGv imm = tcg_const_i32(li(ctx, 0)); \
gen_helper_##op(cpu_regs[a->rd], cpu_env, \
cpu_regs[a->rd], imm); \
tcg_temp_free(imm); \
return true; \
} \
static bool cat3(trans_, name, _mr)(DisasContext *ctx, \
cat3(arg_, name, _mr) * a) \
{ \
TCGv val, mem; \
mem = tcg_temp_new(); \
val = rx_load_source(ctx, mem, a->ld, MO_32, a->rs); \
gen_helper_##op(cpu_regs[a->rd], cpu_env, \
cpu_regs[a->rd], val); \
tcg_temp_free(mem); \
return true; \
}
#define FCONVOP(name, op) \
static bool trans_##name(DisasContext *ctx, arg_##name * a) \
{ \
TCGv val, mem; \
mem = tcg_temp_new(); \
val = rx_load_source(ctx, mem, a->ld, MO_32, a->rs); \
gen_helper_##op(cpu_regs[a->rd], cpu_env, val); \
tcg_temp_free(mem); \
return true; \
}
FOP(FADD, fadd)
FOP(FSUB, fsub)
FOP(FMUL, fmul)
FOP(FDIV, fdiv)
/* fcmp #imm, rd */
static bool trans_FCMP_ir(DisasContext *ctx, arg_FCMP_ir * a)
{
TCGv imm = tcg_const_i32(li(ctx, 0));
gen_helper_fcmp(cpu_env, cpu_regs[a->rd], imm);
tcg_temp_free(imm);
return true;
}
/* fcmp dsp[rs], rd */
/* fcmp rs, rd */
static bool trans_FCMP_mr(DisasContext *ctx, arg_FCMP_mr *a)
{
TCGv val, mem;
mem = tcg_temp_new();
val = rx_load_source(ctx, mem, a->ld, MO_32, a->rs);
gen_helper_fcmp(cpu_env, cpu_regs[a->rd], val);
tcg_temp_free(mem);
return true;
}
FCONVOP(FTOI, ftoi)
FCONVOP(ROUND, round)
/* itof rs, rd */
/* itof dsp[rs], rd */
static bool trans_ITOF(DisasContext *ctx, arg_ITOF * a)
{
TCGv val, mem;
mem = tcg_temp_new();
val = rx_load_source(ctx, mem, a->ld, a->mi, a->rs);
gen_helper_itof(cpu_regs[a->rd], cpu_env, val);
tcg_temp_free(mem);
return true;
}
static void rx_bsetm(TCGv mem, TCGv mask)
{
TCGv val;
val = tcg_temp_new();
rx_gen_ld(MO_8, val, mem);
tcg_gen_or_i32(val, val, mask);
rx_gen_st(MO_8, val, mem);
tcg_temp_free(val);
}
static void rx_bclrm(TCGv mem, TCGv mask)
{
TCGv val;
val = tcg_temp_new();
rx_gen_ld(MO_8, val, mem);
tcg_gen_andc_i32(val, val, mask);
rx_gen_st(MO_8, val, mem);
tcg_temp_free(val);
}
static void rx_btstm(TCGv mem, TCGv mask)
{
TCGv val;
val = tcg_temp_new();
rx_gen_ld(MO_8, val, mem);
tcg_gen_and_i32(val, val, mask);
tcg_gen_setcondi_i32(TCG_COND_NE, cpu_psw_c, val, 0);
tcg_gen_mov_i32(cpu_psw_z, cpu_psw_c);
tcg_temp_free(val);
}
static void rx_bnotm(TCGv mem, TCGv mask)
{
TCGv val;
val = tcg_temp_new();
rx_gen_ld(MO_8, val, mem);
tcg_gen_xor_i32(val, val, mask);
rx_gen_st(MO_8, val, mem);
tcg_temp_free(val);
}
static void rx_bsetr(TCGv reg, TCGv mask)
{
tcg_gen_or_i32(reg, reg, mask);
}
static void rx_bclrr(TCGv reg, TCGv mask)
{
tcg_gen_andc_i32(reg, reg, mask);
}
static inline void rx_btstr(TCGv reg, TCGv mask)
{
TCGv t0;
t0 = tcg_temp_new();
tcg_gen_and_i32(t0, reg, mask);
tcg_gen_setcondi_i32(TCG_COND_NE, cpu_psw_c, t0, 0);
tcg_gen_mov_i32(cpu_psw_z, cpu_psw_c);
tcg_temp_free(t0);
}
static inline void rx_bnotr(TCGv reg, TCGv mask)
{
tcg_gen_xor_i32(reg, reg, mask);
}
#define BITOP(name, op) \
static bool cat3(trans_, name, _im)(DisasContext *ctx, \
cat3(arg_, name, _im) * a) \
{ \
TCGv mask, mem, addr; \
mem = tcg_temp_new(); \
mask = tcg_const_i32(1 << a->imm); \
addr = rx_index_addr(ctx, mem, a->ld, MO_8, a->rs); \
cat3(rx_, op, m)(addr, mask); \
tcg_temp_free(mask); \
tcg_temp_free(mem); \
return true; \
} \
static bool cat3(trans_, name, _ir)(DisasContext *ctx, \
cat3(arg_, name, _ir) * a) \
{ \
TCGv mask; \
mask = tcg_const_i32(1 << a->imm); \
cat3(rx_, op, r)(cpu_regs[a->rd], mask); \
tcg_temp_free(mask); \
return true; \
} \
static bool cat3(trans_, name, _rr)(DisasContext *ctx, \
cat3(arg_, name, _rr) * a) \
{ \
TCGv mask, b; \
mask = tcg_const_i32(1); \
b = tcg_temp_new(); \
tcg_gen_andi_i32(b, cpu_regs[a->rs], 31); \
tcg_gen_shl_i32(mask, mask, b); \
cat3(rx_, op, r)(cpu_regs[a->rd], mask); \
tcg_temp_free(mask); \
tcg_temp_free(b); \
return true; \
} \
static bool cat3(trans_, name, _rm)(DisasContext *ctx, \
cat3(arg_, name, _rm) * a) \
{ \
TCGv mask, mem, addr, b; \
mask = tcg_const_i32(1); \
b = tcg_temp_new(); \
tcg_gen_andi_i32(b, cpu_regs[a->rd], 7); \
tcg_gen_shl_i32(mask, mask, b); \
mem = tcg_temp_new(); \
addr = rx_index_addr(ctx, mem, a->ld, MO_8, a->rs); \
cat3(rx_, op, m)(addr, mask); \
tcg_temp_free(mem); \
tcg_temp_free(mask); \
tcg_temp_free(b); \
return true; \
}
BITOP(BSET, bset)
BITOP(BCLR, bclr)
BITOP(BTST, btst)
BITOP(BNOT, bnot)
static inline void bmcnd_op(TCGv val, TCGCond cond, int pos)
{
TCGv bit;
DisasCompare dc;
dc.temp = tcg_temp_new();
bit = tcg_temp_new();
psw_cond(&dc, cond);
tcg_gen_andi_i32(val, val, ~(1 << pos));
tcg_gen_setcondi_i32(dc.cond, bit, dc.value, 0);
tcg_gen_deposit_i32(val, val, bit, pos, 1);
tcg_temp_free(bit);
tcg_temp_free(dc.temp);
}
/* bmcnd #imm, dsp[rd] */
static bool trans_BMCnd_im(DisasContext *ctx, arg_BMCnd_im *a)
{
TCGv val, mem, addr;
val = tcg_temp_new();
mem = tcg_temp_new();
addr = rx_index_addr(ctx, mem, a->ld, MO_8, a->rd);
rx_gen_ld(MO_8, val, addr);
bmcnd_op(val, a->cd, a->imm);
rx_gen_st(MO_8, val, addr);
tcg_temp_free(val);
tcg_temp_free(mem);
return true;
}
/* bmcond #imm, rd */
static bool trans_BMCnd_ir(DisasContext *ctx, arg_BMCnd_ir *a)
{
bmcnd_op(cpu_regs[a->rd], a->cd, a->imm);
return true;
}
enum {
PSW_C = 0,
PSW_Z = 1,
PSW_S = 2,
PSW_O = 3,
PSW_I = 8,
PSW_U = 9,
};
static inline void clrsetpsw(DisasContext *ctx, int cb, int val)
{
if (cb < 8) {
switch (cb) {
case PSW_C:
tcg_gen_movi_i32(cpu_psw_c, val);
break;
case PSW_Z:
tcg_gen_movi_i32(cpu_psw_z, val == 0);
break;
case PSW_S:
tcg_gen_movi_i32(cpu_psw_s, val ? -1 : 0);
break;
case PSW_O:
tcg_gen_movi_i32(cpu_psw_o, val << 31);
break;
default:
qemu_log_mask(LOG_GUEST_ERROR, "Invalid distination %d", cb);
break;
}
} else if (is_privileged(ctx, 0)) {
switch (cb) {
case PSW_I:
tcg_gen_movi_i32(cpu_psw_i, val);
ctx->base.is_jmp = DISAS_UPDATE;
break;
case PSW_U:
tcg_gen_movi_i32(cpu_psw_u, val);
break;
default:
qemu_log_mask(LOG_GUEST_ERROR, "Invalid distination %d", cb);
break;
}
}
}
/* clrpsw psw */
static bool trans_CLRPSW(DisasContext *ctx, arg_CLRPSW *a)
{
clrsetpsw(ctx, a->cb, 0);
return true;
}
/* setpsw psw */
static bool trans_SETPSW(DisasContext *ctx, arg_SETPSW *a)
{
clrsetpsw(ctx, a->cb, 1);
return true;
}
/* mvtipl #imm */
static bool trans_MVTIPL(DisasContext *ctx, arg_MVTIPL *a)
{
if (is_privileged(ctx, 1)) {
tcg_gen_movi_i32(cpu_psw_ipl, a->imm);
ctx->base.is_jmp = DISAS_UPDATE;
}
return true;
}
/* mvtc #imm, rd */
static bool trans_MVTC_i(DisasContext *ctx, arg_MVTC_i *a)
{
TCGv imm;
imm = tcg_const_i32(a->imm);
move_to_cr(ctx, imm, a->cr);
if (a->cr == 0 && is_privileged(ctx, 0)) {
ctx->base.is_jmp = DISAS_UPDATE;
}
tcg_temp_free(imm);
return true;
}
/* mvtc rs, rd */
static bool trans_MVTC_r(DisasContext *ctx, arg_MVTC_r *a)
{
move_to_cr(ctx, cpu_regs[a->rs], a->cr);
if (a->cr == 0 && is_privileged(ctx, 0)) {
ctx->base.is_jmp = DISAS_UPDATE;
}
return true;
}
/* mvfc rs, rd */
static bool trans_MVFC(DisasContext *ctx, arg_MVFC *a)
{
move_from_cr(cpu_regs[a->rd], a->cr, ctx->pc);
return true;
}
/* rtfi */
static bool trans_RTFI(DisasContext *ctx, arg_RTFI *a)
{
TCGv psw;
if (is_privileged(ctx, 1)) {
psw = tcg_temp_new();
tcg_gen_mov_i32(cpu_pc, cpu_bpc);
tcg_gen_mov_i32(psw, cpu_bpsw);
gen_helper_set_psw_rte(cpu_env, psw);
ctx->base.is_jmp = DISAS_EXIT;
tcg_temp_free(psw);
}
return true;
}
/* rte */
static bool trans_RTE(DisasContext *ctx, arg_RTE *a)
{
TCGv psw;
if (is_privileged(ctx, 1)) {
psw = tcg_temp_new();
pop(cpu_pc);
pop(psw);
gen_helper_set_psw_rte(cpu_env, psw);
ctx->base.is_jmp = DISAS_EXIT;
tcg_temp_free(psw);
}
return true;
}
/* brk */
static bool trans_BRK(DisasContext *ctx, arg_BRK *a)
{
tcg_gen_movi_i32(cpu_pc, ctx->base.pc_next);
gen_helper_rxbrk(cpu_env);
ctx->base.is_jmp = DISAS_NORETURN;
return true;
}
/* int #imm */
static bool trans_INT(DisasContext *ctx, arg_INT *a)
{
TCGv vec;
tcg_debug_assert(a->imm < 0x100);
vec = tcg_const_i32(a->imm);
tcg_gen_movi_i32(cpu_pc, ctx->base.pc_next);
gen_helper_rxint(cpu_env, vec);
tcg_temp_free(vec);
ctx->base.is_jmp = DISAS_NORETURN;
return true;
}
/* wait */
static bool trans_WAIT(DisasContext *ctx, arg_WAIT *a)
{
if (is_privileged(ctx, 1)) {
tcg_gen_addi_i32(cpu_pc, cpu_pc, 2);
gen_helper_wait(cpu_env);
}
return true;
}
static void rx_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)
{
CPURXState *env = cs->env_ptr;
DisasContext *ctx = container_of(dcbase, DisasContext, base);
ctx->env = env;
}
static void rx_tr_tb_start(DisasContextBase *dcbase, CPUState *cs)
{
}
static void rx_tr_insn_start(DisasContextBase *dcbase, CPUState *cs)
{
DisasContext *ctx = container_of(dcbase, DisasContext, base);
tcg_gen_insn_start(ctx->base.pc_next);
}
static bool rx_tr_breakpoint_check(DisasContextBase *dcbase, CPUState *cs,
const CPUBreakpoint *bp)
{
DisasContext *ctx = container_of(dcbase, DisasContext, base);
/* We have hit a breakpoint - make sure PC is up-to-date */
tcg_gen_movi_i32(cpu_pc, ctx->base.pc_next);
gen_helper_debug(cpu_env);
ctx->base.is_jmp = DISAS_NORETURN;
ctx->base.pc_next += 1;
return true;
}
static void rx_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
{
DisasContext *ctx = container_of(dcbase, DisasContext, base);
uint32_t insn;
ctx->pc = ctx->base.pc_next;
insn = decode_load(ctx);
if (!decode(ctx, insn)) {
gen_helper_raise_illegal_instruction(cpu_env);
}
}
static void rx_tr_tb_stop(DisasContextBase *dcbase, CPUState *cs)
{
DisasContext *ctx = container_of(dcbase, DisasContext, base);
switch (ctx->base.is_jmp) {
case DISAS_NEXT:
case DISAS_TOO_MANY:
gen_goto_tb(ctx, 0, dcbase->pc_next);
break;
case DISAS_JUMP:
if (ctx->base.singlestep_enabled) {
gen_helper_debug(cpu_env);
} else {
tcg_gen_lookup_and_goto_ptr();
}
break;
case DISAS_UPDATE:
tcg_gen_movi_i32(cpu_pc, ctx->base.pc_next);
/* fall through */
case DISAS_EXIT:
tcg_gen_exit_tb(NULL, 0);
break;
case DISAS_NORETURN:
break;
default:
g_assert_not_reached();
}
}
static void rx_tr_disas_log(const DisasContextBase *dcbase, CPUState *cs)
{
qemu_log("IN:\n"); /* , lookup_symbol(dcbase->pc_first)); */
log_target_disas(cs, dcbase->pc_first, dcbase->tb->size);
}
static const TranslatorOps rx_tr_ops = {
.init_disas_context = rx_tr_init_disas_context,
.tb_start = rx_tr_tb_start,
.insn_start = rx_tr_insn_start,
.breakpoint_check = rx_tr_breakpoint_check,
.translate_insn = rx_tr_translate_insn,
.tb_stop = rx_tr_tb_stop,
.disas_log = rx_tr_disas_log,
};
void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
{
DisasContext dc;
translator_loop(&rx_tr_ops, &dc.base, cs, tb, max_insns);
}
void restore_state_to_opc(CPURXState *env, TranslationBlock *tb,
target_ulong *data)
{
env->pc = data[0];
}
#define ALLOC_REGISTER(sym, name) \
cpu_##sym = tcg_global_mem_new_i32(cpu_env, \
offsetof(CPURXState, sym), name)
void rx_translate_init(void)
{
static const char * const regnames[NUM_REGS] = {
"R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7",
"R8", "R9", "R10", "R11", "R12", "R13", "R14", "R15"
};
int i;
for (i = 0; i < NUM_REGS; i++) {
cpu_regs[i] = tcg_global_mem_new_i32(cpu_env,
offsetof(CPURXState, regs[i]),
regnames[i]);
}
ALLOC_REGISTER(pc, "PC");
ALLOC_REGISTER(psw_o, "PSW(O)");
ALLOC_REGISTER(psw_s, "PSW(S)");
ALLOC_REGISTER(psw_z, "PSW(Z)");
ALLOC_REGISTER(psw_c, "PSW(C)");
ALLOC_REGISTER(psw_u, "PSW(U)");
ALLOC_REGISTER(psw_i, "PSW(I)");
ALLOC_REGISTER(psw_pm, "PSW(PM)");
ALLOC_REGISTER(psw_ipl, "PSW(IPL)");
ALLOC_REGISTER(usp, "USP");
ALLOC_REGISTER(fpsw, "FPSW");
ALLOC_REGISTER(bpsw, "BPSW");
ALLOC_REGISTER(bpc, "BPC");
ALLOC_REGISTER(isp, "ISP");
ALLOC_REGISTER(fintv, "FINTV");
ALLOC_REGISTER(intb, "INTB");
cpu_acc = tcg_global_mem_new_i64(cpu_env,
offsetof(CPURXState, acc), "ACC");
}