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qemu-e2k/target-arm/translate.c
Juha Riihimäki 21aeb3430c fix ARMv7 data processing instructions 
ARMv7 defines a new behavior for ARM data processing instructions
compared to earlier architecture revisions; when the destination
register is R15, a Branch and Exchange operation is executed rather
than a simple Branch to the target address. This patch corrects the
behavior of the emulation for the aforementioned operations. To be
applied after applying the previous patch in this patch set.

Signed-off-by: Juha Riihimäki <juha.riihimaki@nokia.com>
Signed-off-by: Paul Brook <paul@codesourcery.com>
2009-05-15 03:18:42 +01:00

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/*
* ARM translation
*
* Copyright (c) 2003 Fabrice Bellard
* Copyright (c) 2005-2007 CodeSourcery
* Copyright (c) 2007 OpenedHand, Ltd.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
*/
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include "cpu.h"
#include "exec-all.h"
#include "disas.h"
#include "tcg-op.h"
#include "qemu-log.h"
#include "helpers.h"
#define GEN_HELPER 1
#include "helpers.h"
#define ENABLE_ARCH_5J 0
#define ENABLE_ARCH_6 arm_feature(env, ARM_FEATURE_V6)
#define ENABLE_ARCH_6K arm_feature(env, ARM_FEATURE_V6K)
#define ENABLE_ARCH_6T2 arm_feature(env, ARM_FEATURE_THUMB2)
#define ENABLE_ARCH_7 arm_feature(env, ARM_FEATURE_V7)
#define ARCH(x) do { if (!ENABLE_ARCH_##x) goto illegal_op; } while(0)
/* 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. */
int condlabel;
/* Thumb-2 condtional execution bits. */
int condexec_mask;
int condexec_cond;
struct TranslationBlock *tb;
int singlestep_enabled;
int thumb;
#if !defined(CONFIG_USER_ONLY)
int user;
#endif
} DisasContext;
#if defined(CONFIG_USER_ONLY)
#define IS_USER(s) 1
#else
#define IS_USER(s) (s->user)
#endif
/* These instructions trap after executing, so defer them until after the
conditional executions state has been updated. */
#define DISAS_WFI 4
#define DISAS_SWI 5
static TCGv_ptr cpu_env;
/* We reuse the same 64-bit temporaries for efficiency. */
static TCGv_i64 cpu_V0, cpu_V1, cpu_M0;
/* FIXME: These should be removed. */
static TCGv cpu_T[2];
static TCGv cpu_F0s, cpu_F1s;
static TCGv_i64 cpu_F0d, cpu_F1d;
#define ICOUNT_TEMP cpu_T[0]
#include "gen-icount.h"
/* initialize TCG globals. */
void arm_translate_init(void)
{
cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
cpu_T[0] = tcg_global_reg_new_i32(TCG_AREG1, "T0");
cpu_T[1] = tcg_global_reg_new_i32(TCG_AREG2, "T1");
#define GEN_HELPER 2
#include "helpers.h"
}
/* The code generator doesn't like lots of temporaries, so maintain our own
cache for reuse within a function. */
#define MAX_TEMPS 8
static int num_temps;
static TCGv temps[MAX_TEMPS];
/* Allocate a temporary variable. */
static TCGv_i32 new_tmp(void)
{
TCGv tmp;
if (num_temps == MAX_TEMPS)
abort();
if (GET_TCGV_I32(temps[num_temps]))
return temps[num_temps++];
tmp = tcg_temp_new_i32();
temps[num_temps++] = tmp;
return tmp;
}
/* Release a temporary variable. */
static void dead_tmp(TCGv tmp)
{
int i;
num_temps--;
i = num_temps;
if (TCGV_EQUAL(temps[i], tmp))
return;
/* Shuffle this temp to the last slot. */
while (!TCGV_EQUAL(temps[i], tmp))
i--;
while (i < num_temps) {
temps[i] = temps[i + 1];
i++;
}
temps[i] = tmp;
}
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(CPUState, 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(CPUState, name))
/* Set a variable to the value of a CPU register. */
static void load_reg_var(DisasContext *s, TCGv var, int reg)
{
if (reg == 15) {
uint32_t addr;
/* normaly, since we updated PC, we need only to add one insn */
if (s->thumb)
addr = (long)s->pc + 2;
else
addr = (long)s->pc + 4;
tcg_gen_movi_i32(var, addr);
} else {
tcg_gen_ld_i32(var, cpu_env, offsetof(CPUState, regs[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 == 15) {
tcg_gen_andi_i32(var, var, ~1);
s->is_jmp = DISAS_JUMP;
}
tcg_gen_st_i32(var, cpu_env, offsetof(CPUState, regs[reg]));
dead_tmp(var);
}
/* Basic operations. */
#define gen_op_movl_T0_T1() tcg_gen_mov_i32(cpu_T[0], cpu_T[1])
#define gen_op_movl_T0_im(im) tcg_gen_movi_i32(cpu_T[0], im)
#define gen_op_movl_T1_im(im) tcg_gen_movi_i32(cpu_T[1], im)
#define gen_op_addl_T1_im(im) tcg_gen_addi_i32(cpu_T[1], cpu_T[1], im)
#define gen_op_addl_T0_T1() tcg_gen_add_i32(cpu_T[0], cpu_T[0], cpu_T[1])
#define gen_op_subl_T0_T1() tcg_gen_sub_i32(cpu_T[0], cpu_T[0], cpu_T[1])
#define gen_op_rsbl_T0_T1() tcg_gen_sub_i32(cpu_T[0], cpu_T[1], cpu_T[0])
#define gen_op_addl_T0_T1_cc() gen_helper_add_cc(cpu_T[0], cpu_T[0], cpu_T[1])
#define gen_op_adcl_T0_T1_cc() gen_helper_adc_cc(cpu_T[0], cpu_T[0], cpu_T[1])
#define gen_op_subl_T0_T1_cc() gen_helper_sub_cc(cpu_T[0], cpu_T[0], cpu_T[1])
#define gen_op_sbcl_T0_T1_cc() gen_helper_sbc_cc(cpu_T[0], cpu_T[0], cpu_T[1])
#define gen_op_rsbl_T0_T1_cc() gen_helper_sub_cc(cpu_T[0], cpu_T[1], cpu_T[0])
#define gen_op_andl_T0_T1() tcg_gen_and_i32(cpu_T[0], cpu_T[0], cpu_T[1])
#define gen_op_xorl_T0_T1() tcg_gen_xor_i32(cpu_T[0], cpu_T[0], cpu_T[1])
#define gen_op_orl_T0_T1() tcg_gen_or_i32(cpu_T[0], cpu_T[0], cpu_T[1])
#define gen_op_notl_T0() tcg_gen_not_i32(cpu_T[0], cpu_T[0])
#define gen_op_notl_T1() tcg_gen_not_i32(cpu_T[1], cpu_T[1])
#define gen_op_logic_T0_cc() gen_logic_CC(cpu_T[0]);
#define gen_op_logic_T1_cc() gen_logic_CC(cpu_T[1]);
#define gen_op_shll_T1_im(im) tcg_gen_shli_i32(cpu_T[1], cpu_T[1], im)
#define gen_op_shrl_T1_im(im) tcg_gen_shri_i32(cpu_T[1], cpu_T[1], im)
/* 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 gen_sxtb16(var) gen_helper_sxtb16(var, var)
#define gen_uxtb16(var) gen_helper_uxtb16(var, var)
#define gen_op_mul_T0_T1() tcg_gen_mul_i32(cpu_T[0], cpu_T[0], cpu_T[1])
#define gen_set_cpsr(var, mask) gen_helper_cpsr_write(var, tcg_const_i32(mask))
/* Set NZCV flags from the high 4 bits of var. */
#define gen_set_nzcv(var) gen_set_cpsr(var, CPSR_NZCV)
static void gen_exception(int excp)
{
TCGv tmp = new_tmp();
tcg_gen_movi_i32(tmp, excp);
gen_helper_exception(tmp);
dead_tmp(tmp);
}
static void gen_smul_dual(TCGv a, TCGv b)
{
TCGv tmp1 = new_tmp();
TCGv tmp2 = new_tmp();
tcg_gen_ext16s_i32(tmp1, a);
tcg_gen_ext16s_i32(tmp2, b);
tcg_gen_mul_i32(tmp1, tmp1, tmp2);
dead_tmp(tmp2);
tcg_gen_sari_i32(a, a, 16);
tcg_gen_sari_i32(b, b, 16);
tcg_gen_mul_i32(b, b, a);
tcg_gen_mov_i32(a, tmp1);
dead_tmp(tmp1);
}
/* Byteswap each halfword. */
static void gen_rev16(TCGv var)
{
TCGv tmp = new_tmp();
tcg_gen_shri_i32(tmp, var, 8);
tcg_gen_andi_i32(tmp, tmp, 0x00ff00ff);
tcg_gen_shli_i32(var, var, 8);
tcg_gen_andi_i32(var, var, 0xff00ff00);
tcg_gen_or_i32(var, var, tmp);
dead_tmp(tmp);
}
/* Byteswap low halfword and sign extend. */
static void gen_revsh(TCGv var)
{
TCGv tmp = new_tmp();
tcg_gen_shri_i32(tmp, var, 8);
tcg_gen_andi_i32(tmp, tmp, 0x00ff);
tcg_gen_shli_i32(var, var, 8);
tcg_gen_ext8s_i32(var, var);
tcg_gen_or_i32(var, var, tmp);
dead_tmp(tmp);
}
/* Unsigned bitfield extract. */
static void gen_ubfx(TCGv var, int shift, uint32_t mask)
{
if (shift)
tcg_gen_shri_i32(var, var, shift);
tcg_gen_andi_i32(var, var, mask);
}
/* Signed bitfield extract. */
static void gen_sbfx(TCGv var, int shift, int width)
{
uint32_t signbit;
if (shift)
tcg_gen_sari_i32(var, var, shift);
if (shift + width < 32) {
signbit = 1u << (width - 1);
tcg_gen_andi_i32(var, var, (1u << width) - 1);
tcg_gen_xori_i32(var, var, signbit);
tcg_gen_subi_i32(var, var, signbit);
}
}
/* Bitfield insertion. Insert val into base. Clobbers base and val. */
static void gen_bfi(TCGv dest, TCGv base, TCGv val, int shift, uint32_t mask)
{
tcg_gen_andi_i32(val, val, mask);
tcg_gen_shli_i32(val, val, shift);
tcg_gen_andi_i32(base, base, ~(mask << shift));
tcg_gen_or_i32(dest, base, val);
}
/* Round the top 32 bits of a 64-bit value. */
static void gen_roundqd(TCGv a, TCGv b)
{
tcg_gen_shri_i32(a, a, 31);
tcg_gen_add_i32(a, a, b);
}
/* FIXME: Most targets have native widening multiplication.
It would be good to use that instead of a full wide multiply. */
/* 32x32->64 multiply. Marks inputs as dead. */
static TCGv_i64 gen_mulu_i64_i32(TCGv a, TCGv b)
{
TCGv_i64 tmp1 = tcg_temp_new_i64();
TCGv_i64 tmp2 = tcg_temp_new_i64();
tcg_gen_extu_i32_i64(tmp1, a);
dead_tmp(a);
tcg_gen_extu_i32_i64(tmp2, b);
dead_tmp(b);
tcg_gen_mul_i64(tmp1, tmp1, tmp2);
return tmp1;
}
static TCGv_i64 gen_muls_i64_i32(TCGv a, TCGv b)
{
TCGv_i64 tmp1 = tcg_temp_new_i64();
TCGv_i64 tmp2 = tcg_temp_new_i64();
tcg_gen_ext_i32_i64(tmp1, a);
dead_tmp(a);
tcg_gen_ext_i32_i64(tmp2, b);
dead_tmp(b);
tcg_gen_mul_i64(tmp1, tmp1, tmp2);
return tmp1;
}
/* Unsigned 32x32->64 multiply. */
static void gen_op_mull_T0_T1(void)
{
TCGv_i64 tmp1 = tcg_temp_new_i64();
TCGv_i64 tmp2 = tcg_temp_new_i64();
tcg_gen_extu_i32_i64(tmp1, cpu_T[0]);
tcg_gen_extu_i32_i64(tmp2, cpu_T[1]);
tcg_gen_mul_i64(tmp1, tmp1, tmp2);
tcg_gen_trunc_i64_i32(cpu_T[0], tmp1);
tcg_gen_shri_i64(tmp1, tmp1, 32);
tcg_gen_trunc_i64_i32(cpu_T[1], tmp1);
}
/* Signed 32x32->64 multiply. */
static void gen_imull(TCGv a, TCGv b)
{
TCGv_i64 tmp1 = tcg_temp_new_i64();
TCGv_i64 tmp2 = tcg_temp_new_i64();
tcg_gen_ext_i32_i64(tmp1, a);
tcg_gen_ext_i32_i64(tmp2, b);
tcg_gen_mul_i64(tmp1, tmp1, tmp2);
tcg_gen_trunc_i64_i32(a, tmp1);
tcg_gen_shri_i64(tmp1, tmp1, 32);
tcg_gen_trunc_i64_i32(b, tmp1);
}
/* Swap low and high halfwords. */
static void gen_swap_half(TCGv var)
{
TCGv tmp = new_tmp();
tcg_gen_shri_i32(tmp, var, 16);
tcg_gen_shli_i32(var, var, 16);
tcg_gen_or_i32(var, var, tmp);
dead_tmp(tmp);
}
/* Dual 16-bit add. Result placed in t0 and t1 is marked as dead.
tmp = (t0 ^ t1) & 0x8000;
t0 &= ~0x8000;
t1 &= ~0x8000;
t0 = (t0 + t1) ^ tmp;
*/
static void gen_add16(TCGv t0, TCGv t1)
{
TCGv tmp = new_tmp();
tcg_gen_xor_i32(tmp, t0, t1);
tcg_gen_andi_i32(tmp, tmp, 0x8000);
tcg_gen_andi_i32(t0, t0, ~0x8000);
tcg_gen_andi_i32(t1, t1, ~0x8000);
tcg_gen_add_i32(t0, t0, t1);
tcg_gen_xor_i32(t0, t0, tmp);
dead_tmp(tmp);
dead_tmp(t1);
}
#define gen_set_CF(var) tcg_gen_st_i32(var, cpu_env, offsetof(CPUState, 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(CPUState, NF));
tcg_gen_st_i32(var, cpu_env, offsetof(CPUState, ZF));
}
/* T0 += T1 + CF. */
static void gen_adc_T0_T1(void)
{
TCGv tmp;
gen_op_addl_T0_T1();
tmp = load_cpu_field(CF);
tcg_gen_add_i32(cpu_T[0], cpu_T[0], tmp);
dead_tmp(tmp);
}
/* 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);
}
#define gen_sbc_T0_T1() gen_sub_carry(cpu_T[0], cpu_T[0], cpu_T[1])
#define gen_rsc_T0_T1() gen_sub_carry(cpu_T[0], cpu_T[1], cpu_T[0])
/* T0 &= ~T1. Clobbers T1. */
/* FIXME: Implement bic natively. */
static inline void tcg_gen_bic_i32(TCGv dest, TCGv t0, TCGv t1)
{
TCGv tmp = new_tmp();
tcg_gen_not_i32(tmp, t1);
tcg_gen_and_i32(dest, t0, tmp);
dead_tmp(tmp);
}
static inline void gen_op_bicl_T0_T1(void)
{
gen_op_notl_T1();
gen_op_andl_T0_T1();
}
/* FIXME: Implement this natively. */
#define tcg_gen_abs_i32(t0, t1) gen_helper_abs(t0, t1)
/* FIXME: Implement this natively. */
static void tcg_gen_rori_i32(TCGv t0, TCGv t1, int i)
{
TCGv tmp;
if (i == 0)
return;
tmp = new_tmp();
tcg_gen_shri_i32(tmp, t1, i);
tcg_gen_shli_i32(t1, t1, 32 - i);
tcg_gen_or_i32(t0, t1, tmp);
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_arm_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_rori_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_arm_shift_reg(TCGv var, int shiftop,
TCGv shift, int flags)
{
if (flags) {
switch (shiftop) {
case 0: gen_helper_shl_cc(var, var, shift); break;
case 1: gen_helper_shr_cc(var, var, shift); break;
case 2: gen_helper_sar_cc(var, var, shift); break;
case 3: gen_helper_ror_cc(var, 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: gen_helper_ror(var, var, shift); break;
}
}
dead_tmp(shift);
}
#define PAS_OP(pfx) \
switch (op2) { \
case 0: gen_pas_helper(glue(pfx,add16)); break; \
case 1: gen_pas_helper(glue(pfx,addsubx)); break; \
case 2: gen_pas_helper(glue(pfx,subaddx)); break; \
case 3: gen_pas_helper(glue(pfx,sub16)); break; \
case 4: gen_pas_helper(glue(pfx,add8)); break; \
case 7: gen_pas_helper(glue(pfx,sub8)); break; \
}
static void gen_arm_parallel_addsub(int op1, int op2, TCGv a, TCGv b)
{
TCGv_ptr tmp;
switch (op1) {
#define gen_pas_helper(name) glue(gen_helper_,name)(a, a, b, tmp)
case 1:
tmp = tcg_temp_new_ptr();
tcg_gen_addi_ptr(tmp, cpu_env, offsetof(CPUState, GE));
PAS_OP(s)
break;
case 5:
tmp = tcg_temp_new_ptr();
tcg_gen_addi_ptr(tmp, cpu_env, offsetof(CPUState, GE));
PAS_OP(u)
break;
#undef gen_pas_helper
#define gen_pas_helper(name) glue(gen_helper_,name)(a, a, b)
case 2:
PAS_OP(q);
break;
case 3:
PAS_OP(sh);
break;
case 6:
PAS_OP(uq);
break;
case 7:
PAS_OP(uh);
break;
#undef gen_pas_helper
}
}
#undef PAS_OP
/* For unknown reasons Arm and Thumb-2 use arbitrarily different encodings. */
#define PAS_OP(pfx) \
switch (op2) { \
case 0: gen_pas_helper(glue(pfx,add8)); break; \
case 1: gen_pas_helper(glue(pfx,add16)); break; \
case 2: gen_pas_helper(glue(pfx,addsubx)); break; \
case 4: gen_pas_helper(glue(pfx,sub8)); break; \
case 5: gen_pas_helper(glue(pfx,sub16)); break; \
case 6: gen_pas_helper(glue(pfx,subaddx)); break; \
}
static void gen_thumb2_parallel_addsub(int op1, int op2, TCGv a, TCGv b)
{
TCGv_ptr tmp;
switch (op1) {
#define gen_pas_helper(name) glue(gen_helper_,name)(a, a, b, tmp)
case 0:
tmp = tcg_temp_new_ptr();
tcg_gen_addi_ptr(tmp, cpu_env, offsetof(CPUState, GE));
PAS_OP(s)
break;
case 4:
tmp = tcg_temp_new_ptr();
tcg_gen_addi_ptr(tmp, cpu_env, offsetof(CPUState, GE));
PAS_OP(u)
break;
#undef gen_pas_helper
#define gen_pas_helper(name) glue(gen_helper_,name)(a, a, b)
case 1:
PAS_OP(q);
break;
case 2:
PAS_OP(sh);
break;
case 5:
PAS_OP(uq);
break;
case 6:
PAS_OP(uh);
break;
#undef gen_pas_helper
}
}
#undef PAS_OP
static void gen_test_cc(int cc, int label)
{
TCGv tmp;
TCGv tmp2;
int 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 and Thumb state from an immediate address. */
static inline void gen_bx_im(DisasContext *s, uint32_t addr)
{
TCGv tmp;
s->is_jmp = DISAS_UPDATE;
tmp = new_tmp();
if (s->thumb != (addr & 1)) {
tcg_gen_movi_i32(tmp, addr & 1);
tcg_gen_st_i32(tmp, cpu_env, offsetof(CPUState, thumb));
}
tcg_gen_movi_i32(tmp, addr & ~1);
tcg_gen_st_i32(tmp, cpu_env, offsetof(CPUState, regs[15]));
dead_tmp(tmp);
}
/* Set PC and Thumb state from var. var is marked as dead. */
static inline void gen_bx(DisasContext *s, TCGv var)
{
TCGv tmp;
s->is_jmp = DISAS_UPDATE;
tmp = new_tmp();
tcg_gen_andi_i32(tmp, var, 1);
store_cpu_field(tmp, thumb);
tcg_gen_andi_i32(var, var, ~1);
store_cpu_field(var, regs[15]);
}
/* TODO: This should be removed. Use gen_bx instead. */
static inline void gen_bx_T0(DisasContext *s)
{
TCGv tmp = new_tmp();
tcg_gen_mov_i32(tmp, cpu_T[0]);
gen_bx(s, tmp);
}
/* Variant of store_reg which uses branch&exchange logic when storing
to r15 in ARM architecture v7 and above. The source must be a temporary
and will be marked as dead. */
static inline void store_reg_bx(CPUState *env, DisasContext *s,
int reg, TCGv var)
{
if (reg == 15 && ENABLE_ARCH_7) {
gen_bx(s, var);
} else {
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_movl_T0_reg(DisasContext *s, int reg)
{
load_reg_var(s, cpu_T[0], reg);
}
static inline void gen_movl_T1_reg(DisasContext *s, int reg)
{
load_reg_var(s, cpu_T[1], reg);
}
static inline void gen_movl_T2_reg(DisasContext *s, int reg)
{
load_reg_var(s, cpu_T[2], reg);
}
static inline void gen_set_pc_im(uint32_t val)
{
TCGv tmp = new_tmp();
tcg_gen_movi_i32(tmp, val);
store_cpu_field(tmp, regs[15]);
}
static inline void gen_movl_reg_TN(DisasContext *s, int reg, int t)
{
TCGv tmp;
if (reg == 15) {
tmp = new_tmp();
tcg_gen_andi_i32(tmp, cpu_T[t], ~1);
} else {
tmp = cpu_T[t];
}
tcg_gen_st_i32(tmp, cpu_env, offsetof(CPUState, regs[reg]));
if (reg == 15) {
dead_tmp(tmp);
s->is_jmp = DISAS_JUMP;
}
}
static inline void gen_movl_reg_T0(DisasContext *s, int reg)
{
gen_movl_reg_TN(s, reg, 0);
}
static inline void gen_movl_reg_T1(DisasContext *s, int reg)
{
gen_movl_reg_TN(s, reg, 1);
}
/* Force a TB lookup after an instruction that changes the CPU state. */
static inline void gen_lookup_tb(DisasContext *s)
{
gen_op_movl_T0_im(s->pc);
gen_movl_reg_T0(s, 15);
s->is_jmp = DISAS_UPDATE;
}
static inline void gen_add_data_offset(DisasContext *s, unsigned int insn,
TCGv var)
{
int val, rm, shift, shiftop;
TCGv offset;
if (!(insn & (1 << 25))) {
/* immediate */
val = insn & 0xfff;
if (!(insn & (1 << 23)))
val = -val;
if (val != 0)
tcg_gen_addi_i32(var, var, val);
} else {
/* shift/register */
rm = (insn) & 0xf;
shift = (insn >> 7) & 0x1f;
shiftop = (insn >> 5) & 3;
offset = load_reg(s, rm);
gen_arm_shift_im(offset, shiftop, shift, 0);
if (!(insn & (1 << 23)))
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,
int extra, TCGv var)
{
int val, rm;
TCGv offset;
if (insn & (1 << 22)) {
/* immediate */
val = (insn & 0xf) | ((insn >> 4) & 0xf0);
if (!(insn & (1 << 23)))
val = -val;
val += extra;
if (val != 0)
tcg_gen_addi_i32(var, var, val);
} else {
/* register */
if (extra)
tcg_gen_addi_i32(var, var, extra);
rm = (insn) & 0xf;
offset = load_reg(s, rm);
if (!(insn & (1 << 23)))
tcg_gen_sub_i32(var, var, offset);
else
tcg_gen_add_i32(var, var, offset);
dead_tmp(offset);
}
}
#define VFP_OP2(name) \
static inline void gen_vfp_##name(int dp) \
{ \
if (dp) \
gen_helper_vfp_##name##d(cpu_F0d, cpu_F0d, cpu_F1d, cpu_env); \
else \
gen_helper_vfp_##name##s(cpu_F0s, cpu_F0s, cpu_F1s, cpu_env); \
}
VFP_OP2(add)
VFP_OP2(sub)
VFP_OP2(mul)
VFP_OP2(div)
#undef VFP_OP2
static inline void gen_vfp_abs(int dp)
{
if (dp)
gen_helper_vfp_absd(cpu_F0d, cpu_F0d);
else
gen_helper_vfp_abss(cpu_F0s, cpu_F0s);
}
static inline void gen_vfp_neg(int dp)
{
if (dp)
gen_helper_vfp_negd(cpu_F0d, cpu_F0d);
else
gen_helper_vfp_negs(cpu_F0s, cpu_F0s);
}
static inline void gen_vfp_sqrt(int dp)
{
if (dp)
gen_helper_vfp_sqrtd(cpu_F0d, cpu_F0d, cpu_env);
else
gen_helper_vfp_sqrts(cpu_F0s, cpu_F0s, cpu_env);
}
static inline void gen_vfp_cmp(int dp)
{
if (dp)
gen_helper_vfp_cmpd(cpu_F0d, cpu_F1d, cpu_env);
else
gen_helper_vfp_cmps(cpu_F0s, cpu_F1s, cpu_env);
}
static inline void gen_vfp_cmpe(int dp)
{
if (dp)
gen_helper_vfp_cmped(cpu_F0d, cpu_F1d, cpu_env);
else
gen_helper_vfp_cmpes(cpu_F0s, cpu_F1s, cpu_env);
}
static inline void gen_vfp_F1_ld0(int dp)
{
if (dp)
tcg_gen_movi_i64(cpu_F1d, 0);
else
tcg_gen_movi_i32(cpu_F1s, 0);
}
static inline void gen_vfp_uito(int dp)
{
if (dp)
gen_helper_vfp_uitod(cpu_F0d, cpu_F0s, cpu_env);
else
gen_helper_vfp_uitos(cpu_F0s, cpu_F0s, cpu_env);
}
static inline void gen_vfp_sito(int dp)
{
if (dp)
gen_helper_vfp_sitod(cpu_F0d, cpu_F0s, cpu_env);
else
gen_helper_vfp_sitos(cpu_F0s, cpu_F0s, cpu_env);
}
static inline void gen_vfp_toui(int dp)
{
if (dp)
gen_helper_vfp_touid(cpu_F0s, cpu_F0d, cpu_env);
else
gen_helper_vfp_touis(cpu_F0s, cpu_F0s, cpu_env);
}
static inline void gen_vfp_touiz(int dp)
{
if (dp)
gen_helper_vfp_touizd(cpu_F0s, cpu_F0d, cpu_env);
else
gen_helper_vfp_touizs(cpu_F0s, cpu_F0s, cpu_env);
}
static inline void gen_vfp_tosi(int dp)
{
if (dp)
gen_helper_vfp_tosid(cpu_F0s, cpu_F0d, cpu_env);
else
gen_helper_vfp_tosis(cpu_F0s, cpu_F0s, cpu_env);
}
static inline void gen_vfp_tosiz(int dp)
{
if (dp)
gen_helper_vfp_tosizd(cpu_F0s, cpu_F0d, cpu_env);
else
gen_helper_vfp_tosizs(cpu_F0s, cpu_F0s, cpu_env);
}
#define VFP_GEN_FIX(name) \
static inline void gen_vfp_##name(int dp, int shift) \
{ \
if (dp) \
gen_helper_vfp_##name##d(cpu_F0d, cpu_F0d, tcg_const_i32(shift), cpu_env);\
else \
gen_helper_vfp_##name##s(cpu_F0s, cpu_F0s, tcg_const_i32(shift), cpu_env);\
}
VFP_GEN_FIX(tosh)
VFP_GEN_FIX(tosl)
VFP_GEN_FIX(touh)
VFP_GEN_FIX(toul)
VFP_GEN_FIX(shto)
VFP_GEN_FIX(slto)
VFP_GEN_FIX(uhto)
VFP_GEN_FIX(ulto)
#undef VFP_GEN_FIX
static inline void gen_vfp_ld(DisasContext *s, int dp)
{
if (dp)
tcg_gen_qemu_ld64(cpu_F0d, cpu_T[1], IS_USER(s));
else
tcg_gen_qemu_ld32u(cpu_F0s, cpu_T[1], IS_USER(s));
}
static inline void gen_vfp_st(DisasContext *s, int dp)
{
if (dp)
tcg_gen_qemu_st64(cpu_F0d, cpu_T[1], IS_USER(s));
else
tcg_gen_qemu_st32(cpu_F0s, cpu_T[1], IS_USER(s));
}
static inline long
vfp_reg_offset (int dp, int reg)
{
if (dp)
return offsetof(CPUARMState, vfp.regs[reg]);
else if (reg & 1) {
return offsetof(CPUARMState, vfp.regs[reg >> 1])
+ offsetof(CPU_DoubleU, l.upper);
} else {
return offsetof(CPUARMState, vfp.regs[reg >> 1])
+ offsetof(CPU_DoubleU, l.lower);
}
}
/* Return the offset of a 32-bit piece of a NEON register.
zero is the least significant end of the register. */
static inline long
neon_reg_offset (int reg, int n)
{
int sreg;
sreg = reg * 2 + n;
return vfp_reg_offset(0, sreg);
}
/* FIXME: Remove these. */
#define neon_T0 cpu_T[0]
#define neon_T1 cpu_T[1]
#define NEON_GET_REG(T, reg, n) \
tcg_gen_ld_i32(neon_##T, cpu_env, neon_reg_offset(reg, n))
#define NEON_SET_REG(T, reg, n) \
tcg_gen_st_i32(neon_##T, cpu_env, neon_reg_offset(reg, n))
static TCGv neon_load_reg(int reg, int pass)
{
TCGv tmp = new_tmp();
tcg_gen_ld_i32(tmp, cpu_env, neon_reg_offset(reg, pass));
return tmp;
}
static void neon_store_reg(int reg, int pass, TCGv var)
{
tcg_gen_st_i32(var, cpu_env, neon_reg_offset(reg, pass));
dead_tmp(var);
}
static inline void neon_load_reg64(TCGv_i64 var, int reg)
{
tcg_gen_ld_i64(var, cpu_env, vfp_reg_offset(1, reg));
}
static inline void neon_store_reg64(TCGv_i64 var, int reg)
{
tcg_gen_st_i64(var, cpu_env, vfp_reg_offset(1, reg));
}
#define tcg_gen_ld_f32 tcg_gen_ld_i32
#define tcg_gen_ld_f64 tcg_gen_ld_i64
#define tcg_gen_st_f32 tcg_gen_st_i32
#define tcg_gen_st_f64 tcg_gen_st_i64
static inline void gen_mov_F0_vreg(int dp, int reg)
{
if (dp)
tcg_gen_ld_f64(cpu_F0d, cpu_env, vfp_reg_offset(dp, reg));
else
tcg_gen_ld_f32(cpu_F0s, cpu_env, vfp_reg_offset(dp, reg));
}
static inline void gen_mov_F1_vreg(int dp, int reg)
{
if (dp)
tcg_gen_ld_f64(cpu_F1d, cpu_env, vfp_reg_offset(dp, reg));
else
tcg_gen_ld_f32(cpu_F1s, cpu_env, vfp_reg_offset(dp, reg));
}
static inline void gen_mov_vreg_F0(int dp, int reg)
{
if (dp)
tcg_gen_st_f64(cpu_F0d, cpu_env, vfp_reg_offset(dp, reg));
else
tcg_gen_st_f32(cpu_F0s, cpu_env, vfp_reg_offset(dp, reg));
}
#define ARM_CP_RW_BIT (1 << 20)
static inline void iwmmxt_load_reg(TCGv_i64 var, int reg)
{
tcg_gen_ld_i64(var, cpu_env, offsetof(CPUState, iwmmxt.regs[reg]));
}
static inline void iwmmxt_store_reg(TCGv_i64 var, int reg)
{
tcg_gen_st_i64(var, cpu_env, offsetof(CPUState, iwmmxt.regs[reg]));
}
static inline void gen_op_iwmmxt_movl_wCx_T0(int reg)
{
tcg_gen_st_i32(cpu_T[0], cpu_env, offsetof(CPUState, iwmmxt.cregs[reg]));
}
static inline void gen_op_iwmmxt_movl_T0_wCx(int reg)
{
tcg_gen_ld_i32(cpu_T[0], cpu_env, offsetof(CPUState, iwmmxt.cregs[reg]));
}
static inline void gen_op_iwmmxt_movl_T1_wCx(int reg)
{
tcg_gen_ld_i32(cpu_T[1], cpu_env, offsetof(CPUState, iwmmxt.cregs[reg]));
}
static inline void gen_op_iwmmxt_movq_wRn_M0(int rn)
{
iwmmxt_store_reg(cpu_M0, rn);
}
static inline void gen_op_iwmmxt_movq_M0_wRn(int rn)
{
iwmmxt_load_reg(cpu_M0, rn);
}
static inline void gen_op_iwmmxt_orq_M0_wRn(int rn)
{
iwmmxt_load_reg(cpu_V1, rn);
tcg_gen_or_i64(cpu_M0, cpu_M0, cpu_V1);
}
static inline void gen_op_iwmmxt_andq_M0_wRn(int rn)
{
iwmmxt_load_reg(cpu_V1, rn);
tcg_gen_and_i64(cpu_M0, cpu_M0, cpu_V1);
}
static inline void gen_op_iwmmxt_xorq_M0_wRn(int rn)
{
iwmmxt_load_reg(cpu_V1, rn);
tcg_gen_xor_i64(cpu_M0, cpu_M0, cpu_V1);
}
#define IWMMXT_OP(name) \
static inline void gen_op_iwmmxt_##name##_M0_wRn(int rn) \
{ \
iwmmxt_load_reg(cpu_V1, rn); \
gen_helper_iwmmxt_##name(cpu_M0, cpu_M0, cpu_V1); \
}
#define IWMMXT_OP_ENV(name) \
static inline void gen_op_iwmmxt_##name##_M0_wRn(int rn) \
{ \
iwmmxt_load_reg(cpu_V1, rn); \
gen_helper_iwmmxt_##name(cpu_M0, cpu_env, cpu_M0, cpu_V1); \
}
#define IWMMXT_OP_ENV_SIZE(name) \
IWMMXT_OP_ENV(name##b) \
IWMMXT_OP_ENV(name##w) \
IWMMXT_OP_ENV(name##l)
#define IWMMXT_OP_ENV1(name) \
static inline void gen_op_iwmmxt_##name##_M0(void) \
{ \
gen_helper_iwmmxt_##name(cpu_M0, cpu_env, cpu_M0); \
}
IWMMXT_OP(maddsq)
IWMMXT_OP(madduq)
IWMMXT_OP(sadb)
IWMMXT_OP(sadw)
IWMMXT_OP(mulslw)
IWMMXT_OP(mulshw)
IWMMXT_OP(mululw)
IWMMXT_OP(muluhw)
IWMMXT_OP(macsw)
IWMMXT_OP(macuw)
IWMMXT_OP_ENV_SIZE(unpackl)
IWMMXT_OP_ENV_SIZE(unpackh)
IWMMXT_OP_ENV1(unpacklub)
IWMMXT_OP_ENV1(unpackluw)
IWMMXT_OP_ENV1(unpacklul)
IWMMXT_OP_ENV1(unpackhub)
IWMMXT_OP_ENV1(unpackhuw)
IWMMXT_OP_ENV1(unpackhul)
IWMMXT_OP_ENV1(unpacklsb)
IWMMXT_OP_ENV1(unpacklsw)
IWMMXT_OP_ENV1(unpacklsl)
IWMMXT_OP_ENV1(unpackhsb)
IWMMXT_OP_ENV1(unpackhsw)
IWMMXT_OP_ENV1(unpackhsl)
IWMMXT_OP_ENV_SIZE(cmpeq)
IWMMXT_OP_ENV_SIZE(cmpgtu)
IWMMXT_OP_ENV_SIZE(cmpgts)
IWMMXT_OP_ENV_SIZE(mins)
IWMMXT_OP_ENV_SIZE(minu)
IWMMXT_OP_ENV_SIZE(maxs)
IWMMXT_OP_ENV_SIZE(maxu)
IWMMXT_OP_ENV_SIZE(subn)
IWMMXT_OP_ENV_SIZE(addn)
IWMMXT_OP_ENV_SIZE(subu)
IWMMXT_OP_ENV_SIZE(addu)
IWMMXT_OP_ENV_SIZE(subs)
IWMMXT_OP_ENV_SIZE(adds)
IWMMXT_OP_ENV(avgb0)
IWMMXT_OP_ENV(avgb1)
IWMMXT_OP_ENV(avgw0)
IWMMXT_OP_ENV(avgw1)
IWMMXT_OP(msadb)
IWMMXT_OP_ENV(packuw)
IWMMXT_OP_ENV(packul)
IWMMXT_OP_ENV(packuq)
IWMMXT_OP_ENV(packsw)
IWMMXT_OP_ENV(packsl)
IWMMXT_OP_ENV(packsq)
static inline void gen_op_iwmmxt_muladdsl_M0_T0_T1(void)
{
gen_helper_iwmmxt_muladdsl(cpu_M0, cpu_M0, cpu_T[0], cpu_T[1]);
}
static inline void gen_op_iwmmxt_muladdsw_M0_T0_T1(void)
{
gen_helper_iwmmxt_muladdsw(cpu_M0, cpu_M0, cpu_T[0], cpu_T[1]);
}
static inline void gen_op_iwmmxt_muladdswl_M0_T0_T1(void)
{
gen_helper_iwmmxt_muladdswl(cpu_M0, cpu_M0, cpu_T[0], cpu_T[1]);
}
static inline void gen_op_iwmmxt_align_M0_T0_wRn(int rn)
{
iwmmxt_load_reg(cpu_V1, rn);
gen_helper_iwmmxt_align(cpu_M0, cpu_M0, cpu_V1, cpu_T[0]);
}
static inline void gen_op_iwmmxt_insr_M0_T0_T1(int shift)
{
TCGv tmp = tcg_const_i32(shift);
gen_helper_iwmmxt_insr(cpu_M0, cpu_M0, cpu_T[0], cpu_T[1], tmp);
}
static inline void gen_op_iwmmxt_extrsb_T0_M0(int shift)
{
tcg_gen_shri_i64(cpu_M0, cpu_M0, shift);
tcg_gen_trunc_i64_i32(cpu_T[0], cpu_M0);
tcg_gen_ext8s_i32(cpu_T[0], cpu_T[0]);
}
static inline void gen_op_iwmmxt_extrsw_T0_M0(int shift)
{
tcg_gen_shri_i64(cpu_M0, cpu_M0, shift);
tcg_gen_trunc_i64_i32(cpu_T[0], cpu_M0);
tcg_gen_ext16s_i32(cpu_T[0], cpu_T[0]);
}
static inline void gen_op_iwmmxt_extru_T0_M0(int shift, uint32_t mask)
{
tcg_gen_shri_i64(cpu_M0, cpu_M0, shift);
tcg_gen_trunc_i64_i32(cpu_T[0], cpu_M0);
if (mask != ~0u)
tcg_gen_andi_i32(cpu_T[0], cpu_T[0], mask);
}
static void gen_op_iwmmxt_set_mup(void)
{
TCGv tmp;
tmp = load_cpu_field(iwmmxt.cregs[ARM_IWMMXT_wCon]);
tcg_gen_ori_i32(tmp, tmp, 2);
store_cpu_field(tmp, iwmmxt.cregs[ARM_IWMMXT_wCon]);
}
static void gen_op_iwmmxt_set_cup(void)
{
TCGv tmp;
tmp = load_cpu_field(iwmmxt.cregs[ARM_IWMMXT_wCon]);
tcg_gen_ori_i32(tmp, tmp, 1);
store_cpu_field(tmp, iwmmxt.cregs[ARM_IWMMXT_wCon]);
}
static void gen_op_iwmmxt_setpsr_nz(void)
{
TCGv tmp = new_tmp();
gen_helper_iwmmxt_setpsr_nz(tmp, cpu_M0);
store_cpu_field(tmp, iwmmxt.cregs[ARM_IWMMXT_wCASF]);
}
static inline void gen_op_iwmmxt_addl_M0_wRn(int rn)
{
iwmmxt_load_reg(cpu_V1, rn);
tcg_gen_ext32u_i64(cpu_V1, cpu_V1);
tcg_gen_add_i64(cpu_M0, cpu_M0, cpu_V1);
}
static void gen_iwmmxt_movl_T0_T1_wRn(int rn)
{
iwmmxt_load_reg(cpu_V0, rn);
tcg_gen_trunc_i64_i32(cpu_T[0], cpu_V0);
tcg_gen_shri_i64(cpu_V0, cpu_V0, 32);
tcg_gen_trunc_i64_i32(cpu_T[1], cpu_V0);
}
static void gen_iwmmxt_movl_wRn_T0_T1(int rn)
{
tcg_gen_concat_i32_i64(cpu_V0, cpu_T[0], cpu_T[1]);
iwmmxt_store_reg(cpu_V0, rn);
}
static inline int gen_iwmmxt_address(DisasContext *s, uint32_t insn)
{
int rd;
uint32_t offset;
rd = (insn >> 16) & 0xf;
gen_movl_T1_reg(s, rd);
offset = (insn & 0xff) << ((insn >> 7) & 2);
if (insn & (1 << 24)) {
/* Pre indexed */
if (insn & (1 << 23))
gen_op_addl_T1_im(offset);
else
gen_op_addl_T1_im(-offset);
if (insn & (1 << 21))
gen_movl_reg_T1(s, rd);
} else if (insn & (1 << 21)) {
/* Post indexed */
if (insn & (1 << 23))
gen_op_movl_T0_im(offset);
else
gen_op_movl_T0_im(- offset);
gen_op_addl_T0_T1();
gen_movl_reg_T0(s, rd);
} else if (!(insn & (1 << 23)))
return 1;
return 0;
}
static inline int gen_iwmmxt_shift(uint32_t insn, uint32_t mask)
{
int rd = (insn >> 0) & 0xf;
if (insn & (1 << 8))
if (rd < ARM_IWMMXT_wCGR0 || rd > ARM_IWMMXT_wCGR3)
return 1;
else
gen_op_iwmmxt_movl_T0_wCx(rd);
else
gen_iwmmxt_movl_T0_T1_wRn(rd);
gen_op_movl_T1_im(mask);
gen_op_andl_T0_T1();
return 0;
}
/* Disassemble an iwMMXt instruction. Returns nonzero if an error occured
(ie. an undefined instruction). */
static int disas_iwmmxt_insn(CPUState *env, DisasContext *s, uint32_t insn)
{
int rd, wrd;
int rdhi, rdlo, rd0, rd1, i;
TCGv tmp;
if ((insn & 0x0e000e00) == 0x0c000000) {
if ((insn & 0x0fe00ff0) == 0x0c400000) {
wrd = insn & 0xf;
rdlo = (insn >> 12) & 0xf;
rdhi = (insn >> 16) & 0xf;
if (insn & ARM_CP_RW_BIT) { /* TMRRC */
gen_iwmmxt_movl_T0_T1_wRn(wrd);
gen_movl_reg_T0(s, rdlo);
gen_movl_reg_T1(s, rdhi);
} else { /* TMCRR */
gen_movl_T0_reg(s, rdlo);
gen_movl_T1_reg(s, rdhi);
gen_iwmmxt_movl_wRn_T0_T1(wrd);
gen_op_iwmmxt_set_mup();
}
return 0;
}
wrd = (insn >> 12) & 0xf;
if (gen_iwmmxt_address(s, insn))
return 1;
if (insn & ARM_CP_RW_BIT) {
if ((insn >> 28) == 0xf) { /* WLDRW wCx */
tmp = gen_ld32(cpu_T[1], IS_USER(s));
tcg_gen_mov_i32(cpu_T[0], tmp);
dead_tmp(tmp);
gen_op_iwmmxt_movl_wCx_T0(wrd);
} else {
i = 1;
if (insn & (1 << 8)) {
if (insn & (1 << 22)) { /* WLDRD */
tcg_gen_qemu_ld64(cpu_M0, cpu_T[1], IS_USER(s));
i = 0;
} else { /* WLDRW wRd */
tmp = gen_ld32(cpu_T[1], IS_USER(s));
}
} else {
if (insn & (1 << 22)) { /* WLDRH */
tmp = gen_ld16u(cpu_T[1], IS_USER(s));
} else { /* WLDRB */
tmp = gen_ld8u(cpu_T[1], IS_USER(s));
}
}
if (i) {
tcg_gen_extu_i32_i64(cpu_M0, tmp);
dead_tmp(tmp);
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
}
} else {
if ((insn >> 28) == 0xf) { /* WSTRW wCx */
gen_op_iwmmxt_movl_T0_wCx(wrd);
tmp = new_tmp();
tcg_gen_mov_i32(tmp, cpu_T[0]);
gen_st32(tmp, cpu_T[1], IS_USER(s));
} else {
gen_op_iwmmxt_movq_M0_wRn(wrd);
tmp = new_tmp();
if (insn & (1 << 8)) {
if (insn & (1 << 22)) { /* WSTRD */
dead_tmp(tmp);
tcg_gen_qemu_st64(cpu_M0, cpu_T[1], IS_USER(s));
} else { /* WSTRW wRd */
tcg_gen_trunc_i64_i32(tmp, cpu_M0);
gen_st32(tmp, cpu_T[1], IS_USER(s));
}
} else {
if (insn & (1 << 22)) { /* WSTRH */
tcg_gen_trunc_i64_i32(tmp, cpu_M0);
gen_st16(tmp, cpu_T[1], IS_USER(s));
} else { /* WSTRB */
tcg_gen_trunc_i64_i32(tmp, cpu_M0);
gen_st8(tmp, cpu_T[1], IS_USER(s));
}
}
}
}
return 0;
}
if ((insn & 0x0f000000) != 0x0e000000)
return 1;
switch (((insn >> 12) & 0xf00) | ((insn >> 4) & 0xff)) {
case 0x000: /* WOR */
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 0) & 0xf;
rd1 = (insn >> 16) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
gen_op_iwmmxt_orq_M0_wRn(rd1);
gen_op_iwmmxt_setpsr_nz();
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x011: /* TMCR */
if (insn & 0xf)
return 1;
rd = (insn >> 12) & 0xf;
wrd = (insn >> 16) & 0xf;
switch (wrd) {
case ARM_IWMMXT_wCID:
case ARM_IWMMXT_wCASF:
break;
case ARM_IWMMXT_wCon:
gen_op_iwmmxt_set_cup();
/* Fall through. */
case ARM_IWMMXT_wCSSF:
gen_op_iwmmxt_movl_T0_wCx(wrd);
gen_movl_T1_reg(s, rd);
gen_op_bicl_T0_T1();
gen_op_iwmmxt_movl_wCx_T0(wrd);
break;
case ARM_IWMMXT_wCGR0:
case ARM_IWMMXT_wCGR1:
case ARM_IWMMXT_wCGR2:
case ARM_IWMMXT_wCGR3:
gen_op_iwmmxt_set_cup();
gen_movl_reg_T0(s, rd);
gen_op_iwmmxt_movl_wCx_T0(wrd);
break;
default:
return 1;
}
break;
case 0x100: /* WXOR */
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 0) & 0xf;
rd1 = (insn >> 16) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
gen_op_iwmmxt_xorq_M0_wRn(rd1);
gen_op_iwmmxt_setpsr_nz();
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x111: /* TMRC */
if (insn & 0xf)
return 1;
rd = (insn >> 12) & 0xf;
wrd = (insn >> 16) & 0xf;
gen_op_iwmmxt_movl_T0_wCx(wrd);
gen_movl_reg_T0(s, rd);
break;
case 0x300: /* WANDN */
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 0) & 0xf;
rd1 = (insn >> 16) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
tcg_gen_neg_i64(cpu_M0, cpu_M0);
gen_op_iwmmxt_andq_M0_wRn(rd1);
gen_op_iwmmxt_setpsr_nz();
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x200: /* WAND */
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 0) & 0xf;
rd1 = (insn >> 16) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
gen_op_iwmmxt_andq_M0_wRn(rd1);
gen_op_iwmmxt_setpsr_nz();
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x810: case 0xa10: /* WMADD */
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 0) & 0xf;
rd1 = (insn >> 16) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
if (insn & (1 << 21))
gen_op_iwmmxt_maddsq_M0_wRn(rd1);
else
gen_op_iwmmxt_madduq_M0_wRn(rd1);
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
break;
case 0x10e: case 0x50e: case 0x90e: case 0xd0e: /* WUNPCKIL */
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
rd1 = (insn >> 0) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
switch ((insn >> 22) & 3) {
case 0:
gen_op_iwmmxt_unpacklb_M0_wRn(rd1);
break;
case 1:
gen_op_iwmmxt_unpacklw_M0_wRn(rd1);
break;
case 2:
gen_op_iwmmxt_unpackll_M0_wRn(rd1);
break;
case 3:
return 1;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x10c: case 0x50c: case 0x90c: case 0xd0c: /* WUNPCKIH */
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
rd1 = (insn >> 0) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
switch ((insn >> 22) & 3) {
case 0:
gen_op_iwmmxt_unpackhb_M0_wRn(rd1);
break;
case 1:
gen_op_iwmmxt_unpackhw_M0_wRn(rd1);
break;
case 2:
gen_op_iwmmxt_unpackhl_M0_wRn(rd1);
break;
case 3:
return 1;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x012: case 0x112: case 0x412: case 0x512: /* WSAD */
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
rd1 = (insn >> 0) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
if (insn & (1 << 22))
gen_op_iwmmxt_sadw_M0_wRn(rd1);
else
gen_op_iwmmxt_sadb_M0_wRn(rd1);
if (!(insn & (1 << 20)))
gen_op_iwmmxt_addl_M0_wRn(wrd);
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
break;
case 0x010: case 0x110: case 0x210: case 0x310: /* WMUL */
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
rd1 = (insn >> 0) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
if (insn & (1 << 21)) {
if (insn & (1 << 20))
gen_op_iwmmxt_mulshw_M0_wRn(rd1);
else
gen_op_iwmmxt_mulslw_M0_wRn(rd1);
} else {
if (insn & (1 << 20))
gen_op_iwmmxt_muluhw_M0_wRn(rd1);
else
gen_op_iwmmxt_mululw_M0_wRn(rd1);
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
break;
case 0x410: case 0x510: case 0x610: case 0x710: /* WMAC */
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
rd1 = (insn >> 0) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
if (insn & (1 << 21))
gen_op_iwmmxt_macsw_M0_wRn(rd1);
else
gen_op_iwmmxt_macuw_M0_wRn(rd1);
if (!(insn & (1 << 20))) {
iwmmxt_load_reg(cpu_V1, wrd);
tcg_gen_add_i64(cpu_M0, cpu_M0, cpu_V1);
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
break;
case 0x006: case 0x406: case 0x806: case 0xc06: /* WCMPEQ */
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
rd1 = (insn >> 0) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
switch ((insn >> 22) & 3) {
case 0:
gen_op_iwmmxt_cmpeqb_M0_wRn(rd1);
break;
case 1:
gen_op_iwmmxt_cmpeqw_M0_wRn(rd1);
break;
case 2:
gen_op_iwmmxt_cmpeql_M0_wRn(rd1);
break;
case 3:
return 1;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x800: case 0x900: case 0xc00: case 0xd00: /* WAVG2 */
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
rd1 = (insn >> 0) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
if (insn & (1 << 22)) {
if (insn & (1 << 20))
gen_op_iwmmxt_avgw1_M0_wRn(rd1);
else
gen_op_iwmmxt_avgw0_M0_wRn(rd1);
} else {
if (insn & (1 << 20))
gen_op_iwmmxt_avgb1_M0_wRn(rd1);
else
gen_op_iwmmxt_avgb0_M0_wRn(rd1);
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x802: case 0x902: case 0xa02: case 0xb02: /* WALIGNR */
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
rd1 = (insn >> 0) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
gen_op_iwmmxt_movl_T0_wCx(ARM_IWMMXT_wCGR0 + ((insn >> 20) & 3));
gen_op_movl_T1_im(7);
gen_op_andl_T0_T1();
gen_op_iwmmxt_align_M0_T0_wRn(rd1);
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
break;
case 0x601: case 0x605: case 0x609: case 0x60d: /* TINSR */
rd = (insn >> 12) & 0xf;
wrd = (insn >> 16) & 0xf;
gen_movl_T0_reg(s, rd);
gen_op_iwmmxt_movq_M0_wRn(wrd);
switch ((insn >> 6) & 3) {
case 0:
gen_op_movl_T1_im(0xff);
gen_op_iwmmxt_insr_M0_T0_T1((insn & 7) << 3);
break;
case 1:
gen_op_movl_T1_im(0xffff);
gen_op_iwmmxt_insr_M0_T0_T1((insn & 3) << 4);
break;
case 2:
gen_op_movl_T1_im(0xffffffff);
gen_op_iwmmxt_insr_M0_T0_T1((insn & 1) << 5);
break;
case 3:
return 1;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
break;
case 0x107: case 0x507: case 0x907: case 0xd07: /* TEXTRM */
rd = (insn >> 12) & 0xf;
wrd = (insn >> 16) & 0xf;
if (rd == 15)
return 1;
gen_op_iwmmxt_movq_M0_wRn(wrd);
switch ((insn >> 22) & 3) {
case 0:
if (insn & 8)
gen_op_iwmmxt_extrsb_T0_M0((insn & 7) << 3);
else {
gen_op_iwmmxt_extru_T0_M0((insn & 7) << 3, 0xff);
}
break;
case 1:
if (insn & 8)
gen_op_iwmmxt_extrsw_T0_M0((insn & 3) << 4);
else {
gen_op_iwmmxt_extru_T0_M0((insn & 3) << 4, 0xffff);
}
break;
case 2:
gen_op_iwmmxt_extru_T0_M0((insn & 1) << 5, ~0u);
break;
case 3:
return 1;
}
gen_movl_reg_T0(s, rd);
break;
case 0x117: case 0x517: case 0x917: case 0xd17: /* TEXTRC */
if ((insn & 0x000ff008) != 0x0003f000)
return 1;
gen_op_iwmmxt_movl_T1_wCx(ARM_IWMMXT_wCASF);
switch ((insn >> 22) & 3) {
case 0:
gen_op_shrl_T1_im(((insn & 7) << 2) + 0);
break;
case 1:
gen_op_shrl_T1_im(((insn & 3) << 3) + 4);
break;
case 2:
gen_op_shrl_T1_im(((insn & 1) << 4) + 12);
break;
case 3:
return 1;
}
gen_op_shll_T1_im(28);
gen_set_nzcv(cpu_T[1]);
break;
case 0x401: case 0x405: case 0x409: case 0x40d: /* TBCST */
rd = (insn >> 12) & 0xf;
wrd = (insn >> 16) & 0xf;
gen_movl_T0_reg(s, rd);
switch ((insn >> 6) & 3) {
case 0:
gen_helper_iwmmxt_bcstb(cpu_M0, cpu_T[0]);
break;
case 1:
gen_helper_iwmmxt_bcstw(cpu_M0, cpu_T[0]);
break;
case 2:
gen_helper_iwmmxt_bcstl(cpu_M0, cpu_T[0]);
break;
case 3:
return 1;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
break;
case 0x113: case 0x513: case 0x913: case 0xd13: /* TANDC */
if ((insn & 0x000ff00f) != 0x0003f000)
return 1;
gen_op_iwmmxt_movl_T1_wCx(ARM_IWMMXT_wCASF);
switch ((insn >> 22) & 3) {
case 0:
for (i = 0; i < 7; i ++) {
gen_op_shll_T1_im(4);
gen_op_andl_T0_T1();
}
break;
case 1:
for (i = 0; i < 3; i ++) {
gen_op_shll_T1_im(8);
gen_op_andl_T0_T1();
}
break;
case 2:
gen_op_shll_T1_im(16);
gen_op_andl_T0_T1();
break;
case 3:
return 1;
}
gen_set_nzcv(cpu_T[0]);
break;
case 0x01c: case 0x41c: case 0x81c: case 0xc1c: /* WACC */
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
switch ((insn >> 22) & 3) {
case 0:
gen_helper_iwmmxt_addcb(cpu_M0, cpu_M0);
break;
case 1:
gen_helper_iwmmxt_addcw(cpu_M0, cpu_M0);
break;
case 2:
gen_helper_iwmmxt_addcl(cpu_M0, cpu_M0);
break;
case 3:
return 1;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
break;
case 0x115: case 0x515: case 0x915: case 0xd15: /* TORC */
if ((insn & 0x000ff00f) != 0x0003f000)
return 1;
gen_op_iwmmxt_movl_T1_wCx(ARM_IWMMXT_wCASF);
switch ((insn >> 22) & 3) {
case 0:
for (i = 0; i < 7; i ++) {
gen_op_shll_T1_im(4);
gen_op_orl_T0_T1();
}
break;
case 1:
for (i = 0; i < 3; i ++) {
gen_op_shll_T1_im(8);
gen_op_orl_T0_T1();
}
break;
case 2:
gen_op_shll_T1_im(16);
gen_op_orl_T0_T1();
break;
case 3:
return 1;
}
gen_set_nzcv(cpu_T[0]);
break;
case 0x103: case 0x503: case 0x903: case 0xd03: /* TMOVMSK */
rd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
if ((insn & 0xf) != 0)
return 1;
gen_op_iwmmxt_movq_M0_wRn(rd0);
switch ((insn >> 22) & 3) {
case 0:
gen_helper_iwmmxt_msbb(cpu_T[0], cpu_M0);
break;
case 1:
gen_helper_iwmmxt_msbw(cpu_T[0], cpu_M0);
break;
case 2:
gen_helper_iwmmxt_msbl(cpu_T[0], cpu_M0);
break;
case 3:
return 1;
}
gen_movl_reg_T0(s, rd);
break;
case 0x106: case 0x306: case 0x506: case 0x706: /* WCMPGT */
case 0x906: case 0xb06: case 0xd06: case 0xf06:
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
rd1 = (insn >> 0) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
switch ((insn >> 22) & 3) {
case 0:
if (insn & (1 << 21))
gen_op_iwmmxt_cmpgtsb_M0_wRn(rd1);
else
gen_op_iwmmxt_cmpgtub_M0_wRn(rd1);
break;
case 1:
if (insn & (1 << 21))
gen_op_iwmmxt_cmpgtsw_M0_wRn(rd1);
else
gen_op_iwmmxt_cmpgtuw_M0_wRn(rd1);
break;
case 2:
if (insn & (1 << 21))
gen_op_iwmmxt_cmpgtsl_M0_wRn(rd1);
else
gen_op_iwmmxt_cmpgtul_M0_wRn(rd1);
break;
case 3:
return 1;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x00e: case 0x20e: case 0x40e: case 0x60e: /* WUNPCKEL */
case 0x80e: case 0xa0e: case 0xc0e: case 0xe0e:
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
switch ((insn >> 22) & 3) {
case 0:
if (insn & (1 << 21))
gen_op_iwmmxt_unpacklsb_M0();
else
gen_op_iwmmxt_unpacklub_M0();
break;
case 1:
if (insn & (1 << 21))
gen_op_iwmmxt_unpacklsw_M0();
else
gen_op_iwmmxt_unpackluw_M0();
break;
case 2:
if (insn & (1 << 21))
gen_op_iwmmxt_unpacklsl_M0();
else
gen_op_iwmmxt_unpacklul_M0();
break;
case 3:
return 1;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x00c: case 0x20c: case 0x40c: case 0x60c: /* WUNPCKEH */
case 0x80c: case 0xa0c: case 0xc0c: case 0xe0c:
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
switch ((insn >> 22) & 3) {
case 0:
if (insn & (1 << 21))
gen_op_iwmmxt_unpackhsb_M0();
else
gen_op_iwmmxt_unpackhub_M0();
break;
case 1:
if (insn & (1 << 21))
gen_op_iwmmxt_unpackhsw_M0();
else
gen_op_iwmmxt_unpackhuw_M0();
break;
case 2:
if (insn & (1 << 21))
gen_op_iwmmxt_unpackhsl_M0();
else
gen_op_iwmmxt_unpackhul_M0();
break;
case 3:
return 1;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x204: case 0x604: case 0xa04: case 0xe04: /* WSRL */
case 0x214: case 0x614: case 0xa14: case 0xe14:
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
if (gen_iwmmxt_shift(insn, 0xff))
return 1;
switch ((insn >> 22) & 3) {
case 0:
return 1;
case 1:
gen_helper_iwmmxt_srlw(cpu_M0, cpu_env, cpu_M0, cpu_T[0]);
break;
case 2:
gen_helper_iwmmxt_srll(cpu_M0, cpu_env, cpu_M0, cpu_T[0]);
break;
case 3:
gen_helper_iwmmxt_srlq(cpu_M0, cpu_env, cpu_M0, cpu_T[0]);
break;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x004: case 0x404: case 0x804: case 0xc04: /* WSRA */
case 0x014: case 0x414: case 0x814: case 0xc14:
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
if (gen_iwmmxt_shift(insn, 0xff))
return 1;
switch ((insn >> 22) & 3) {
case 0:
return 1;
case 1:
gen_helper_iwmmxt_sraw(cpu_M0, cpu_env, cpu_M0, cpu_T[0]);
break;
case 2:
gen_helper_iwmmxt_sral(cpu_M0, cpu_env, cpu_M0, cpu_T[0]);
break;
case 3:
gen_helper_iwmmxt_sraq(cpu_M0, cpu_env, cpu_M0, cpu_T[0]);
break;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x104: case 0x504: case 0x904: case 0xd04: /* WSLL */
case 0x114: case 0x514: case 0x914: case 0xd14:
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
if (gen_iwmmxt_shift(insn, 0xff))
return 1;
switch ((insn >> 22) & 3) {
case 0:
return 1;
case 1:
gen_helper_iwmmxt_sllw(cpu_M0, cpu_env, cpu_M0, cpu_T[0]);
break;
case 2:
gen_helper_iwmmxt_slll(cpu_M0, cpu_env, cpu_M0, cpu_T[0]);
break;
case 3:
gen_helper_iwmmxt_sllq(cpu_M0, cpu_env, cpu_M0, cpu_T[0]);
break;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x304: case 0x704: case 0xb04: case 0xf04: /* WROR */
case 0x314: case 0x714: case 0xb14: case 0xf14:
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
switch ((insn >> 22) & 3) {
case 0:
return 1;
case 1:
if (gen_iwmmxt_shift(insn, 0xf))
return 1;
gen_helper_iwmmxt_rorw(cpu_M0, cpu_env, cpu_M0, cpu_T[0]);
break;
case 2:
if (gen_iwmmxt_shift(insn, 0x1f))
return 1;
gen_helper_iwmmxt_rorl(cpu_M0, cpu_env, cpu_M0, cpu_T[0]);
break;
case 3:
if (gen_iwmmxt_shift(insn, 0x3f))
return 1;
gen_helper_iwmmxt_rorq(cpu_M0, cpu_env, cpu_M0, cpu_T[0]);
break;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x116: case 0x316: case 0x516: case 0x716: /* WMIN */
case 0x916: case 0xb16: case 0xd16: case 0xf16:
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
rd1 = (insn >> 0) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
switch ((insn >> 22) & 3) {
case 0:
if (insn & (1 << 21))
gen_op_iwmmxt_minsb_M0_wRn(rd1);
else
gen_op_iwmmxt_minub_M0_wRn(rd1);
break;
case 1:
if (insn & (1 << 21))
gen_op_iwmmxt_minsw_M0_wRn(rd1);
else
gen_op_iwmmxt_minuw_M0_wRn(rd1);
break;
case 2:
if (insn & (1 << 21))
gen_op_iwmmxt_minsl_M0_wRn(rd1);
else
gen_op_iwmmxt_minul_M0_wRn(rd1);
break;
case 3:
return 1;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
break;
case 0x016: case 0x216: case 0x416: case 0x616: /* WMAX */
case 0x816: case 0xa16: case 0xc16: case 0xe16:
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
rd1 = (insn >> 0) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
switch ((insn >> 22) & 3) {
case 0:
if (insn & (1 << 21))
gen_op_iwmmxt_maxsb_M0_wRn(rd1);
else
gen_op_iwmmxt_maxub_M0_wRn(rd1);
break;
case 1:
if (insn & (1 << 21))
gen_op_iwmmxt_maxsw_M0_wRn(rd1);
else
gen_op_iwmmxt_maxuw_M0_wRn(rd1);
break;
case 2:
if (insn & (1 << 21))
gen_op_iwmmxt_maxsl_M0_wRn(rd1);
else
gen_op_iwmmxt_maxul_M0_wRn(rd1);
break;
case 3:
return 1;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
break;
case 0x002: case 0x102: case 0x202: case 0x302: /* WALIGNI */
case 0x402: case 0x502: case 0x602: case 0x702:
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
rd1 = (insn >> 0) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
gen_op_movl_T0_im((insn >> 20) & 3);
gen_op_iwmmxt_align_M0_T0_wRn(rd1);
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
break;
case 0x01a: case 0x11a: case 0x21a: case 0x31a: /* WSUB */
case 0x41a: case 0x51a: case 0x61a: case 0x71a:
case 0x81a: case 0x91a: case 0xa1a: case 0xb1a:
case 0xc1a: case 0xd1a: case 0xe1a: case 0xf1a:
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
rd1 = (insn >> 0) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
switch ((insn >> 20) & 0xf) {
case 0x0:
gen_op_iwmmxt_subnb_M0_wRn(rd1);
break;
case 0x1:
gen_op_iwmmxt_subub_M0_wRn(rd1);
break;
case 0x3:
gen_op_iwmmxt_subsb_M0_wRn(rd1);
break;
case 0x4:
gen_op_iwmmxt_subnw_M0_wRn(rd1);
break;
case 0x5:
gen_op_iwmmxt_subuw_M0_wRn(rd1);
break;
case 0x7:
gen_op_iwmmxt_subsw_M0_wRn(rd1);
break;
case 0x8:
gen_op_iwmmxt_subnl_M0_wRn(rd1);
break;
case 0x9:
gen_op_iwmmxt_subul_M0_wRn(rd1);
break;
case 0xb:
gen_op_iwmmxt_subsl_M0_wRn(rd1);
break;
default:
return 1;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x01e: case 0x11e: case 0x21e: case 0x31e: /* WSHUFH */
case 0x41e: case 0x51e: case 0x61e: case 0x71e:
case 0x81e: case 0x91e: case 0xa1e: case 0xb1e:
case 0xc1e: case 0xd1e: case 0xe1e: case 0xf1e:
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
gen_op_movl_T0_im(((insn >> 16) & 0xf0) | (insn & 0x0f));
gen_helper_iwmmxt_shufh(cpu_M0, cpu_env, cpu_M0, cpu_T[0]);
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x018: case 0x118: case 0x218: case 0x318: /* WADD */
case 0x418: case 0x518: case 0x618: case 0x718:
case 0x818: case 0x918: case 0xa18: case 0xb18:
case 0xc18: case 0xd18: case 0xe18: case 0xf18:
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
rd1 = (insn >> 0) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
switch ((insn >> 20) & 0xf) {
case 0x0:
gen_op_iwmmxt_addnb_M0_wRn(rd1);
break;
case 0x1:
gen_op_iwmmxt_addub_M0_wRn(rd1);
break;
case 0x3:
gen_op_iwmmxt_addsb_M0_wRn(rd1);
break;
case 0x4:
gen_op_iwmmxt_addnw_M0_wRn(rd1);
break;
case 0x5:
gen_op_iwmmxt_adduw_M0_wRn(rd1);
break;
case 0x7:
gen_op_iwmmxt_addsw_M0_wRn(rd1);
break;
case 0x8:
gen_op_iwmmxt_addnl_M0_wRn(rd1);
break;
case 0x9:
gen_op_iwmmxt_addul_M0_wRn(rd1);
break;
case 0xb:
gen_op_iwmmxt_addsl_M0_wRn(rd1);
break;
default:
return 1;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x008: case 0x108: case 0x208: case 0x308: /* WPACK */
case 0x408: case 0x508: case 0x608: case 0x708:
case 0x808: case 0x908: case 0xa08: case 0xb08:
case 0xc08: case 0xd08: case 0xe08: case 0xf08:
wrd = (insn >> 12) & 0xf;
rd0 = (insn >> 16) & 0xf;
rd1 = (insn >> 0) & 0xf;
gen_op_iwmmxt_movq_M0_wRn(rd0);
if (!(insn & (1 << 20)))
return 1;
switch ((insn >> 22) & 3) {
case 0:
return 1;
case 1:
if (insn & (1 << 21))
gen_op_iwmmxt_packsw_M0_wRn(rd1);
else
gen_op_iwmmxt_packuw_M0_wRn(rd1);
break;
case 2:
if (insn & (1 << 21))
gen_op_iwmmxt_packsl_M0_wRn(rd1);
else
gen_op_iwmmxt_packul_M0_wRn(rd1);
break;
case 3:
if (insn & (1 << 21))
gen_op_iwmmxt_packsq_M0_wRn(rd1);
else
gen_op_iwmmxt_packuq_M0_wRn(rd1);
break;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
gen_op_iwmmxt_set_cup();
break;
case 0x201: case 0x203: case 0x205: case 0x207:
case 0x209: case 0x20b: case 0x20d: case 0x20f:
case 0x211: case 0x213: case 0x215: case 0x217:
case 0x219: case 0x21b: case 0x21d: case 0x21f:
wrd = (insn >> 5) & 0xf;
rd0 = (insn >> 12) & 0xf;
rd1 = (insn >> 0) & 0xf;
if (rd0 == 0xf || rd1 == 0xf)
return 1;
gen_op_iwmmxt_movq_M0_wRn(wrd);
switch ((insn >> 16) & 0xf) {
case 0x0: /* TMIA */
gen_movl_T0_reg(s, rd0);
gen_movl_T1_reg(s, rd1);
gen_op_iwmmxt_muladdsl_M0_T0_T1();
break;
case 0x8: /* TMIAPH */
gen_movl_T0_reg(s, rd0);
gen_movl_T1_reg(s, rd1);
gen_op_iwmmxt_muladdsw_M0_T0_T1();
break;
case 0xc: case 0xd: case 0xe: case 0xf: /* TMIAxy */
gen_movl_T1_reg(s, rd0);
if (insn & (1 << 16))
gen_op_shrl_T1_im(16);
gen_op_movl_T0_T1();
gen_movl_T1_reg(s, rd1);
if (insn & (1 << 17))
gen_op_shrl_T1_im(16);
gen_op_iwmmxt_muladdswl_M0_T0_T1();
break;
default:
return 1;
}
gen_op_iwmmxt_movq_wRn_M0(wrd);
gen_op_iwmmxt_set_mup();
break;
default:
return 1;
}
return 0;
}
/* Disassemble an XScale DSP instruction. Returns nonzero if an error occured
(ie. an undefined instruction). */
static int disas_dsp_insn(CPUState *env, DisasContext *s, uint32_t insn)
{
int acc, rd0, rd1, rdhi, rdlo;
if ((insn & 0x0ff00f10) == 0x0e200010) {
/* Multiply with Internal Accumulate Format */
rd0 = (insn >> 12) & 0xf;
rd1 = insn & 0xf;
acc = (insn >> 5) & 7;
if (acc != 0)
return 1;
switch ((insn >> 16) & 0xf) {
case 0x0: /* MIA */
gen_movl_T0_reg(s, rd0);
gen_movl_T1_reg(s, rd1);
gen_op_iwmmxt_muladdsl_M0_T0_T1();
break;
case 0x8: /* MIAPH */
gen_movl_T0_reg(s, rd0);
gen_movl_T1_reg(s, rd1);
gen_op_iwmmxt_muladdsw_M0_T0_T1();
break;
case 0xc: /* MIABB */
case 0xd: /* MIABT */
case 0xe: /* MIATB */
case 0xf: /* MIATT */
gen_movl_T1_reg(s, rd0);
if (insn & (1 << 16))
gen_op_shrl_T1_im(16);
gen_op_movl_T0_T1();
gen_movl_T1_reg(s, rd1);
if (insn & (1 << 17))
gen_op_shrl_T1_im(16);
gen_op_iwmmxt_muladdswl_M0_T0_T1();
break;
default:
return 1;
}
gen_op_iwmmxt_movq_wRn_M0(acc);
return 0;
}
if ((insn & 0x0fe00ff8) == 0x0c400000) {
/* Internal Accumulator Access Format */
rdhi = (insn >> 16) & 0xf;
rdlo = (insn >> 12) & 0xf;
acc = insn & 7;
if (acc != 0)
return 1;
if (insn & ARM_CP_RW_BIT) { /* MRA */
gen_iwmmxt_movl_T0_T1_wRn(acc);
gen_movl_reg_T0(s, rdlo);
gen_op_movl_T0_im((1 << (40 - 32)) - 1);
gen_op_andl_T0_T1();
gen_movl_reg_T0(s, rdhi);
} else { /* MAR */
gen_movl_T0_reg(s, rdlo);
gen_movl_T1_reg(s, rdhi);
gen_iwmmxt_movl_wRn_T0_T1(acc);
}
return 0;
}
return 1;
}
/* Disassemble system coprocessor instruction. Return nonzero if
instruction is not defined. */
static int disas_cp_insn(CPUState *env, DisasContext *s, uint32_t insn)
{
TCGv tmp;
uint32_t rd = (insn >> 12) & 0xf;
uint32_t cp = (insn >> 8) & 0xf;
if (IS_USER(s)) {
return 1;
}
if (insn & ARM_CP_RW_BIT) {
if (!env->cp[cp].cp_read)
return 1;
gen_set_pc_im(s->pc);
tmp = new_tmp();
gen_helper_get_cp(tmp, cpu_env, tcg_const_i32(insn));
store_reg(s, rd, tmp);
} else {
if (!env->cp[cp].cp_write)
return 1;
gen_set_pc_im(s->pc);
tmp = load_reg(s, rd);
gen_helper_set_cp(cpu_env, tcg_const_i32(insn), tmp);
dead_tmp(tmp);
}
return 0;
}
static int cp15_user_ok(uint32_t insn)
{
int cpn = (insn >> 16) & 0xf;
int cpm = insn & 0xf;
int op = ((insn >> 5) & 7) | ((insn >> 18) & 0x38);
if (cpn == 13 && cpm == 0) {
/* TLS register. */
if (op == 2 || (op == 3 && (insn & ARM_CP_RW_BIT)))
return 1;
}
if (cpn == 7) {
/* ISB, DSB, DMB. */
if ((cpm == 5 && op == 4)
|| (cpm == 10 && (op == 4 || op == 5)))
return 1;
}
return 0;
}
/* Disassemble system coprocessor (cp15) instruction. Return nonzero if
instruction is not defined. */
static int disas_cp15_insn(CPUState *env, DisasContext *s, uint32_t insn)
{
uint32_t rd;
TCGv tmp;
/* M profile cores use memory mapped registers instead of cp15. */
if (arm_feature(env, ARM_FEATURE_M))
return 1;
if ((insn & (1 << 25)) == 0) {
if (insn & (1 << 20)) {
/* mrrc */
return 1;
}
/* mcrr. Used for block cache operations, so implement as no-op. */
return 0;
}
if ((insn & (1 << 4)) == 0) {
/* cdp */
return 1;
}
if (IS_USER(s) && !cp15_user_ok(insn)) {
return 1;
}
if ((insn & 0x0fff0fff) == 0x0e070f90
|| (insn & 0x0fff0fff) == 0x0e070f58) {
/* Wait for interrupt. */
gen_set_pc_im(s->pc);
s->is_jmp = DISAS_WFI;
return 0;
}
rd = (insn >> 12) & 0xf;
if (insn & ARM_CP_RW_BIT) {
tmp = new_tmp();
gen_helper_get_cp15(tmp, cpu_env, tcg_const_i32(insn));
/* If the destination register is r15 then sets condition codes. */
if (rd != 15)
store_reg(s, rd, tmp);
else
dead_tmp(tmp);
} else {
tmp = load_reg(s, rd);
gen_helper_set_cp15(cpu_env, tcg_const_i32(insn), tmp);
dead_tmp(tmp);
/* Normally we would always end the TB here, but Linux
* arch/arm/mach-pxa/sleep.S expects two instructions following
* an MMU enable to execute from cache. Imitate this behaviour. */
if (!arm_feature(env, ARM_FEATURE_XSCALE) ||
(insn & 0x0fff0fff) != 0x0e010f10)
gen_lookup_tb(s);
}
return 0;
}
#define VFP_REG_SHR(x, n) (((n) > 0) ? (x) >> (n) : (x) << -(n))
#define VFP_SREG(insn, bigbit, smallbit) \
((VFP_REG_SHR(insn, bigbit - 1) & 0x1e) | (((insn) >> (smallbit)) & 1))
#define VFP_DREG(reg, insn, bigbit, smallbit) do { \
if (arm_feature(env, ARM_FEATURE_VFP3)) { \
reg = (((insn) >> (bigbit)) & 0x0f) \
| (((insn) >> ((smallbit) - 4)) & 0x10); \
} else { \
if (insn & (1 << (smallbit))) \
return 1; \
reg = ((insn) >> (bigbit)) & 0x0f; \
}} while (0)
#define VFP_SREG_D(insn) VFP_SREG(insn, 12, 22)
#define VFP_DREG_D(reg, insn) VFP_DREG(reg, insn, 12, 22)
#define VFP_SREG_N(insn) VFP_SREG(insn, 16, 7)
#define VFP_DREG_N(reg, insn) VFP_DREG(reg, insn, 16, 7)
#define VFP_SREG_M(insn) VFP_SREG(insn, 0, 5)
#define VFP_DREG_M(reg, insn) VFP_DREG(reg, insn, 0, 5)
/* Move between integer and VFP cores. */
static TCGv gen_vfp_mrs(void)
{
TCGv tmp = new_tmp();
tcg_gen_mov_i32(tmp, cpu_F0s);
return tmp;
}
static void gen_vfp_msr(TCGv tmp)
{
tcg_gen_mov_i32(cpu_F0s, tmp);
dead_tmp(tmp);
}
static inline int
vfp_enabled(CPUState * env)
{
return ((env->vfp.xregs[ARM_VFP_FPEXC] & (1 << 30)) != 0);
}
static void gen_neon_dup_u8(TCGv var, int shift)
{
TCGv tmp = new_tmp();
if (shift)
tcg_gen_shri_i32(var, var, shift);
tcg_gen_ext8u_i32(var, var);
tcg_gen_shli_i32(tmp, var, 8);
tcg_gen_or_i32(var, var, tmp);
tcg_gen_shli_i32(tmp, var, 16);
tcg_gen_or_i32(var, var, tmp);
dead_tmp(tmp);
}
static void gen_neon_dup_low16(TCGv var)
{
TCGv tmp = new_tmp();
tcg_gen_ext16u_i32(var, var);
tcg_gen_shli_i32(tmp, var, 16);
tcg_gen_or_i32(var, var, tmp);
dead_tmp(tmp);
}
static void gen_neon_dup_high16(TCGv var)
{
TCGv tmp = new_tmp();
tcg_gen_andi_i32(var, var, 0xffff0000);
tcg_gen_shri_i32(tmp, var, 16);
tcg_gen_or_i32(var, var, tmp);
dead_tmp(tmp);
}
/* Disassemble a VFP instruction. Returns nonzero if an error occured
(ie. an undefined instruction). */
static int disas_vfp_insn(CPUState * env, DisasContext *s, uint32_t insn)
{
uint32_t rd, rn, rm, op, i, n, offset, delta_d, delta_m, bank_mask;
int dp, veclen;
TCGv tmp;
TCGv tmp2;
if (!arm_feature(env, ARM_FEATURE_VFP))
return 1;
if (!vfp_enabled(env)) {
/* VFP disabled. Only allow fmxr/fmrx to/from some control regs. */
if ((insn & 0x0fe00fff) != 0x0ee00a10)
return 1;
rn = (insn >> 16) & 0xf;
if (rn != ARM_VFP_FPSID && rn != ARM_VFP_FPEXC
&& rn != ARM_VFP_MVFR1 && rn != ARM_VFP_MVFR0)
return 1;
}
dp = ((insn & 0xf00) == 0xb00);
switch ((insn >> 24) & 0xf) {
case 0xe:
if (insn & (1 << 4)) {
/* single register transfer */
rd = (insn >> 12) & 0xf;
if (dp) {
int size;
int pass;
VFP_DREG_N(rn, insn);
if (insn & 0xf)
return 1;
if (insn & 0x00c00060
&& !arm_feature(env, ARM_FEATURE_NEON))
return 1;
pass = (insn >> 21) & 1;
if (insn & (1 << 22)) {
size = 0;
offset = ((insn >> 5) & 3) * 8;
} else if (insn & (1 << 5)) {
size = 1;
offset = (insn & (1 << 6)) ? 16 : 0;
} else {
size = 2;
offset = 0;
}
if (insn & ARM_CP_RW_BIT) {
/* vfp->arm */
tmp = neon_load_reg(rn, pass);
switch (size) {
case 0:
if (offset)
tcg_gen_shri_i32(tmp, tmp, offset);
if (insn & (1 << 23))
gen_uxtb(tmp);
else
gen_sxtb(tmp);
break;
case 1:
if (insn & (1 << 23)) {
if (offset) {
tcg_gen_shri_i32(tmp, tmp, 16);
} else {
gen_uxth(tmp);
}
} else {
if (offset) {
tcg_gen_sari_i32(tmp, tmp, 16);
} else {
gen_sxth(tmp);
}
}
break;
case 2:
break;
}
store_reg(s, rd, tmp);
} else {
/* arm->vfp */
tmp = load_reg(s, rd);
if (insn & (1 << 23)) {
/* VDUP */
if (size == 0) {
gen_neon_dup_u8(tmp, 0);
} else if (size == 1) {
gen_neon_dup_low16(tmp);
}
for (n = 0; n <= pass * 2; n++) {
tmp2 = new_tmp();
tcg_gen_mov_i32(tmp2, tmp);
neon_store_reg(rn, n, tmp2);
}
neon_store_reg(rn, n, tmp);
} else {
/* VMOV */
switch (size) {
case 0:
tmp2 = neon_load_reg(rn, pass);
gen_bfi(tmp, tmp2, tmp, offset, 0xff);
dead_tmp(tmp2);
break;
case 1:
tmp2 = neon_load_reg(rn, pass);
gen_bfi(tmp, tmp2, tmp, offset, 0xffff);
dead_tmp(tmp2);
break;
case 2:
break;
}
neon_store_reg(rn, pass, tmp);
}
}
} else { /* !dp */
if ((insn & 0x6f) != 0x00)
return 1;
rn = VFP_SREG_N(insn);
if (insn & ARM_CP_RW_BIT) {
/* vfp->arm */
if (insn & (1 << 21)) {
/* system register */
rn >>= 1;
switch (rn) {
case ARM_VFP_FPSID:
/* VFP2 allows access to FSID from userspace.
VFP3 restricts all id registers to privileged
accesses. */
if (IS_USER(s)
&& arm_feature(env, ARM_FEATURE_VFP3))
return 1;
tmp = load_cpu_field(vfp.xregs[rn]);
break;
case ARM_VFP_FPEXC:
if (IS_USER(s))
return 1;
tmp = load_cpu_field(vfp.xregs[rn]);
break;
case ARM_VFP_FPINST:
case ARM_VFP_FPINST2:
/* Not present in VFP3. */
if (IS_USER(s)
|| arm_feature(env, ARM_FEATURE_VFP3))
return 1;
tmp = load_cpu_field(vfp.xregs[rn]);
break;
case ARM_VFP_FPSCR:
if (rd == 15) {
tmp = load_cpu_field(vfp.xregs[ARM_VFP_FPSCR]);
tcg_gen_andi_i32(tmp, tmp, 0xf0000000);
} else {
tmp = new_tmp();
gen_helper_vfp_get_fpscr(tmp, cpu_env);
}
break;
case ARM_VFP_MVFR0:
case ARM_VFP_MVFR1:
if (IS_USER(s)
|| !arm_feature(env, ARM_FEATURE_VFP3))
return 1;
tmp = load_cpu_field(vfp.xregs[rn]);
break;
default:
return 1;
}
} else {
gen_mov_F0_vreg(0, rn);
tmp = gen_vfp_mrs();
}
if (rd == 15) {
/* Set the 4 flag bits in the CPSR. */
gen_set_nzcv(tmp);
dead_tmp(tmp);
} else {
store_reg(s, rd, tmp);
}
} else {
/* arm->vfp */
tmp = load_reg(s, rd);
if (insn & (1 << 21)) {
rn >>= 1;
/* system register */
switch (rn) {
case ARM_VFP_FPSID:
case ARM_VFP_MVFR0:
case ARM_VFP_MVFR1:
/* Writes are ignored. */
break;
case ARM_VFP_FPSCR:
gen_helper_vfp_set_fpscr(cpu_env, tmp);
dead_tmp(tmp);
gen_lookup_tb(s);
break;
case ARM_VFP_FPEXC:
if (IS_USER(s))
return 1;
store_cpu_field(tmp, vfp.xregs[rn]);
gen_lookup_tb(s);
break;
case ARM_VFP_FPINST:
case ARM_VFP_FPINST2:
store_cpu_field(tmp, vfp.xregs[rn]);
break;
default:
return 1;
}
} else {
gen_vfp_msr(tmp);
gen_mov_vreg_F0(0, rn);
}
}
}
} else {
/* data processing */
/* The opcode is in bits 23, 21, 20 and 6. */
op = ((insn >> 20) & 8) | ((insn >> 19) & 6) | ((insn >> 6) & 1);
if (dp) {
if (op == 15) {
/* rn is opcode */
rn = ((insn >> 15) & 0x1e) | ((insn >> 7) & 1);
} else {
/* rn is register number */
VFP_DREG_N(rn, insn);
}
if (op == 15 && (rn == 15 || rn > 17)) {
/* Integer or single precision destination. */
rd = VFP_SREG_D(insn);
} else {
VFP_DREG_D(rd, insn);
}
if (op == 15 && (rn == 16 || rn == 17)) {
/* Integer source. */
rm = ((insn << 1) & 0x1e) | ((insn >> 5) & 1);
} else {
VFP_DREG_M(rm, insn);
}
} else {
rn = VFP_SREG_N(insn);
if (op == 15 && rn == 15) {
/* Double precision destination. */
VFP_DREG_D(rd, insn);
} else {
rd = VFP_SREG_D(insn);
}
rm = VFP_SREG_M(insn);
}
veclen = env->vfp.vec_len;
if (op == 15 && rn > 3)
veclen = 0;
/* Shut up compiler warnings. */
delta_m = 0;
delta_d = 0;
bank_mask = 0;
if (veclen > 0) {
if (dp)
bank_mask = 0xc;
else
bank_mask = 0x18;
/* Figure out what type of vector operation this is. */
if ((rd & bank_mask) == 0) {
/* scalar */
veclen = 0;
} else {
if (dp)
delta_d = (env->vfp.vec_stride >> 1) + 1;
else
delta_d = env->vfp.vec_stride + 1;
if ((rm & bank_mask) == 0) {
/* mixed scalar/vector */
delta_m = 0;
} else {
/* vector */
delta_m = delta_d;
}
}
}
/* Load the initial operands. */
if (op == 15) {
switch (rn) {
case 16:
case 17:
/* Integer source */
gen_mov_F0_vreg(0, rm);
break;
case 8:
case 9:
/* Compare */
gen_mov_F0_vreg(dp, rd);
gen_mov_F1_vreg(dp, rm);
break;
case 10:
case 11:
/* Compare with zero */
gen_mov_F0_vreg(dp, rd);
gen_vfp_F1_ld0(dp);
break;
case 20:
case 21:
case 22:
case 23:
case 28:
case 29:
case 30:
case 31:
/* Source and destination the same. */
gen_mov_F0_vreg(dp, rd);
break;
default:
/* One source operand. */
gen_mov_F0_vreg(dp, rm);
break;
}
} else {
/* Two source operands. */
gen_mov_F0_vreg(dp, rn);
gen_mov_F1_vreg(dp, rm);
}
for (;;) {
/* Perform the calculation. */
switch (op) {
case 0: /* mac: fd + (fn * fm) */
gen_vfp_mul(dp);
gen_mov_F1_vreg(dp, rd);
gen_vfp_add(dp);
break;
case 1: /* nmac: fd - (fn * fm) */
gen_vfp_mul(dp);
gen_vfp_neg(dp);
gen_mov_F1_vreg(dp, rd);
gen_vfp_add(dp);
break;
case 2: /* msc: -fd + (fn * fm) */
gen_vfp_mul(dp);
gen_mov_F1_vreg(dp, rd);
gen_vfp_sub(dp);
break;
case 3: /* nmsc: -fd - (fn * fm) */
gen_vfp_mul(dp);
gen_vfp_neg(dp);
gen_mov_F1_vreg(dp, rd);
gen_vfp_sub(dp);
break;
case 4: /* mul: fn * fm */
gen_vfp_mul(dp);
break;
case 5: /* nmul: -(fn * fm) */
gen_vfp_mul(dp);
gen_vfp_neg(dp);
break;
case 6: /* add: fn + fm */
gen_vfp_add(dp);
break;
case 7: /* sub: fn - fm */
gen_vfp_sub(dp);
break;
case 8: /* div: fn / fm */
gen_vfp_div(dp);
break;
case 14: /* fconst */
if (!arm_feature(env, ARM_FEATURE_VFP3))
return 1;
n = (insn << 12) & 0x80000000;
i = ((insn >> 12) & 0x70) | (insn & 0xf);
if (dp) {
if (i & 0x40)
i |= 0x3f80;
else
i |= 0x4000;
n |= i << 16;
tcg_gen_movi_i64(cpu_F0d, ((uint64_t)n) << 32);
} else {
if (i & 0x40)
i |= 0x780;
else
i |= 0x800;
n |= i << 19;
tcg_gen_movi_i32(cpu_F0s, n);
}
break;
case 15: /* extension space */
switch (rn) {
case 0: /* cpy */
/* no-op */
break;
case 1: /* abs */
gen_vfp_abs(dp);
break;
case 2: /* neg */
gen_vfp_neg(dp);
break;
case 3: /* sqrt */
gen_vfp_sqrt(dp);
break;
case 8: /* cmp */
gen_vfp_cmp(dp);
break;
case 9: /* cmpe */
gen_vfp_cmpe(dp);
break;
case 10: /* cmpz */
gen_vfp_cmp(dp);
break;
case 11: /* cmpez */
gen_vfp_F1_ld0(dp);
gen_vfp_cmpe(dp);
break;
case 15: /* single<->double conversion */
if (dp)
gen_helper_vfp_fcvtsd(cpu_F0s, cpu_F0d, cpu_env);
else
gen_helper_vfp_fcvtds(cpu_F0d, cpu_F0s, cpu_env);
break;
case 16: /* fuito */
gen_vfp_uito(dp);
break;
case 17: /* fsito */
gen_vfp_sito(dp);
break;
case 20: /* fshto */
if (!arm_feature(env, ARM_FEATURE_VFP3))
return 1;
gen_vfp_shto(dp, 16 - rm);
break;
case 21: /* fslto */
if (!arm_feature(env, ARM_FEATURE_VFP3))
return 1;
gen_vfp_slto(dp, 32 - rm);
break;
case 22: /* fuhto */
if (!arm_feature(env, ARM_FEATURE_VFP3))
return 1;
gen_vfp_uhto(dp, 16 - rm);
break;
case 23: /* fulto */
if (!arm_feature(env, ARM_FEATURE_VFP3))
return 1;
gen_vfp_ulto(dp, 32 - rm);
break;
case 24: /* ftoui */
gen_vfp_toui(dp);
break;
case 25: /* ftouiz */
gen_vfp_touiz(dp);
break;
case 26: /* ftosi */
gen_vfp_tosi(dp);
break;
case 27: /* ftosiz */
gen_vfp_tosiz(dp);
break;
case 28: /* ftosh */
if (!arm_feature(env, ARM_FEATURE_VFP3))
return 1;
gen_vfp_tosh(dp, 16 - rm);
break;
case 29: /* ftosl */
if (!arm_feature(env, ARM_FEATURE_VFP3))
return 1;
gen_vfp_tosl(dp, 32 - rm);
break;
case 30: /* ftouh */
if (!arm_feature(env, ARM_FEATURE_VFP3))
return 1;
gen_vfp_touh(dp, 16 - rm);
break;
case 31: /* ftoul */
if (!arm_feature(env, ARM_FEATURE_VFP3))
return 1;
gen_vfp_toul(dp, 32 - rm);
break;
default: /* undefined */
printf ("rn:%d\n", rn);
return 1;
}
break;
default: /* undefined */
printf ("op:%d\n", op);
return 1;
}
/* Write back the result. */
if (op == 15 && (rn >= 8 && rn <= 11))
; /* Comparison, do nothing. */
else if (op == 15 && rn > 17)
/* Integer result. */
gen_mov_vreg_F0(0, rd);
else if (op == 15 && rn == 15)
/* conversion */
gen_mov_vreg_F0(!dp, rd);
else
gen_mov_vreg_F0(dp, rd);
/* break out of the loop if we have finished */
if (veclen == 0)
break;
if (op == 15 && delta_m == 0) {
/* single source one-many */
while (veclen--) {
rd = ((rd + delta_d) & (bank_mask - 1))
| (rd & bank_mask);
gen_mov_vreg_F0(dp, rd);
}
break;
}
/* Setup the next operands. */
veclen--;
rd = ((rd + delta_d) & (bank_mask - 1))
| (rd & bank_mask);
if (op == 15) {
/* One source operand. */
rm = ((rm + delta_m) & (bank_mask - 1))
| (rm & bank_mask);
gen_mov_F0_vreg(dp, rm);
} else {
/* Two source operands. */
rn = ((rn + delta_d) & (bank_mask - 1))
| (rn & bank_mask);
gen_mov_F0_vreg(dp, rn);
if (delta_m) {
rm = ((rm + delta_m) & (bank_mask - 1))
| (rm & bank_mask);
gen_mov_F1_vreg(dp, rm);
}
}
}
}
break;
case 0xc:
case 0xd:
if (dp && (insn & 0x03e00000) == 0x00400000) {
/* two-register transfer */
rn = (insn >> 16) & 0xf;
rd = (insn >> 12) & 0xf;
if (dp) {
VFP_DREG_M(rm, insn);
} else {
rm = VFP_SREG_M(insn);
}
if (insn & ARM_CP_RW_BIT) {
/* vfp->arm */
if (dp) {
gen_mov_F0_vreg(0, rm * 2);
tmp = gen_vfp_mrs();
store_reg(s, rd, tmp);
gen_mov_F0_vreg(0, rm * 2 + 1);
tmp = gen_vfp_mrs();
store_reg(s, rn, tmp);
} else {
gen_mov_F0_vreg(0, rm);
tmp = gen_vfp_mrs();
store_reg(s, rn, tmp);
gen_mov_F0_vreg(0, rm + 1);
tmp = gen_vfp_mrs();
store_reg(s, rd, tmp);
}
} else {
/* arm->vfp */
if (dp) {
tmp = load_reg(s, rd);
gen_vfp_msr(tmp);
gen_mov_vreg_F0(0, rm * 2);
tmp = load_reg(s, rn);
gen_vfp_msr(tmp);
gen_mov_vreg_F0(0, rm * 2 + 1);
} else {
tmp = load_reg(s, rn);
gen_vfp_msr(tmp);
gen_mov_vreg_F0(0, rm);
tmp = load_reg(s, rd);
gen_vfp_msr(tmp);
gen_mov_vreg_F0(0, rm + 1);
}
}
} else {
/* Load/store */
rn = (insn >> 16) & 0xf;
if (dp)
VFP_DREG_D(rd, insn);
else
rd = VFP_SREG_D(insn);
if (s->thumb && rn == 15) {
gen_op_movl_T1_im(s->pc & ~2);
} else {
gen_movl_T1_reg(s, rn);
}
if ((insn & 0x01200000) == 0x01000000) {
/* Single load/store */
offset = (insn & 0xff) << 2;
if ((insn & (1 << 23)) == 0)
offset = -offset;
gen_op_addl_T1_im(offset);
if (insn & (1 << 20)) {
gen_vfp_ld(s, dp);
gen_mov_vreg_F0(dp, rd);
} else {
gen_mov_F0_vreg(dp, rd);
gen_vfp_st(s, dp);
}
} else {
/* load/store multiple */
if (dp)
n = (insn >> 1) & 0x7f;
else
n = insn & 0xff;
if (insn & (1 << 24)) /* pre-decrement */
gen_op_addl_T1_im(-((insn & 0xff) << 2));
if (dp)
offset = 8;
else
offset = 4;
for (i = 0; i < n; i++) {
if (insn & ARM_CP_RW_BIT) {
/* load */
gen_vfp_ld(s, dp);
gen_mov_vreg_F0(dp, rd + i);
} else {
/* store */
gen_mov_F0_vreg(dp, rd + i);
gen_vfp_st(s, dp);
}
gen_op_addl_T1_im(offset);
}
if (insn & (1 << 21)) {
/* writeback */
if (insn & (1 << 24))
offset = -offset * n;
else if (dp && (insn & 1))
offset = 4;
else
offset = 0;
if (offset != 0)
gen_op_addl_T1_im(offset);
gen_movl_reg_T1(s, rn);
}
}
}
break;
default:
/* Should never happen. */
return 1;
}
return 0;
}
static inline void gen_goto_tb(DisasContext *s, int n, uint32_t dest)
{
TranslationBlock *tb;
tb = s->tb;
if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
tcg_gen_goto_tb(n);
gen_set_pc_im(dest);
tcg_gen_exit_tb((long)tb + n);
} else {
gen_set_pc_im(dest);
tcg_gen_exit_tb(0);
}
}
static inline void gen_jmp (DisasContext *s, uint32_t dest)
{
if (unlikely(s->singlestep_enabled)) {
/* An indirect jump so that we still trigger the debug exception. */
if (s->thumb)
dest |= 1;
gen_bx_im(s, dest);
} else {
gen_goto_tb(s, 0, dest);
s->is_jmp = DISAS_TB_JUMP;
}
}
static inline void gen_mulxy(TCGv t0, TCGv t1, int x, int y)
{
if (x)
tcg_gen_sari_i32(t0, t0, 16);
else
gen_sxth(t0);
if (y)
tcg_gen_sari_i32(t1, t1, 16);
else
gen_sxth(t1);
tcg_gen_mul_i32(t0, t0, t1);
}
/* Return the mask of PSR bits set by a MSR instruction. */
static uint32_t msr_mask(CPUState *env, DisasContext *s, int flags, int spsr) {
uint32_t mask;
mask = 0;
if (flags & (1 << 0))
mask |= 0xff;
if (flags & (1 << 1))
mask |= 0xff00;
if (flags & (1 << 2))
mask |= 0xff0000;
if (flags & (1 << 3))
mask |= 0xff000000;
/* Mask out undefined bits. */
mask &= ~CPSR_RESERVED;
if (!arm_feature(env, ARM_FEATURE_V6))
mask &= ~(CPSR_E | CPSR_GE);
if (!arm_feature(env, ARM_FEATURE_THUMB2))
mask &= ~CPSR_IT;
/* Mask out execution state bits. */
if (!spsr)
mask &= ~CPSR_EXEC;
/* Mask out privileged bits. */
if (IS_USER(s))
mask &= CPSR_USER;
return mask;
}
/* Returns nonzero if access to the PSR is not permitted. */
static int gen_set_psr_T0(DisasContext *s, uint32_t mask, int spsr)
{
TCGv tmp;
if (spsr) {
/* ??? This is also undefined in system mode. */
if (IS_USER(s))
return 1;
tmp = load_cpu_field(spsr);
tcg_gen_andi_i32(tmp, tmp, ~mask);
tcg_gen_andi_i32(cpu_T[0], cpu_T[0], mask);
tcg_gen_or_i32(tmp, tmp, cpu_T[0]);
store_cpu_field(tmp, spsr);
} else {
gen_set_cpsr(cpu_T[0], mask);
}
gen_lookup_tb(s);
return 0;
}
/* Generate an old-style exception return. Marks pc as dead. */
static void gen_exception_return(DisasContext *s, TCGv pc)
{
TCGv tmp;
store_reg(s, 15, pc);
tmp = load_cpu_field(spsr);
gen_set_cpsr(tmp, 0xffffffff);
dead_tmp(tmp);
s->is_jmp = DISAS_UPDATE;
}
/* Generate a v6 exception return. Marks both values as dead. */
static void gen_rfe(DisasContext *s, TCGv pc, TCGv cpsr)
{
gen_set_cpsr(cpsr, 0xffffffff);
dead_tmp(cpsr);
store_reg(s, 15, pc);
s->is_jmp = DISAS_UPDATE;
}
static inline void
gen_set_condexec (DisasContext *s)
{
if (s->condexec_mask) {
uint32_t val = (s->condexec_cond << 4) | (s->condexec_mask >> 1);
TCGv tmp = new_tmp();
tcg_gen_movi_i32(tmp, val);
store_cpu_field(tmp, condexec_bits);
}
}
static void gen_nop_hint(DisasContext *s, int val)
{
switch (val) {
case 3: /* wfi */
gen_set_pc_im(s->pc);
s->is_jmp = DISAS_WFI;
break;
case 2: /* wfe */
case 4: /* sev */
/* TODO: Implement SEV and WFE. May help SMP performance. */
default: /* nop */
break;
}
}
/* These macros help make the code more readable when migrating from the
old dyngen helpers. They should probably be removed when
T0/T1 are removed. */
#define CPU_T001 cpu_T[0], cpu_T[0], cpu_T[1]
#define CPU_T0E01 cpu_T[0], cpu_env, cpu_T[0], cpu_T[1]
#define CPU_V001 cpu_V0, cpu_V0, cpu_V1
static inline int gen_neon_add(int size)
{
switch (size) {
case 0: gen_helper_neon_add_u8(CPU_T001); break;
case 1: gen_helper_neon_add_u16(CPU_T001); break;
case 2: gen_op_addl_T0_T1(); break;
default: return 1;
}
return 0;
}
static inline void gen_neon_rsb(int size)
{
switch (size) {
case 0: gen_helper_neon_sub_u8(cpu_T[0], cpu_T[1], cpu_T[0]); break;
case 1: gen_helper_neon_sub_u16(cpu_T[0], cpu_T[1], cpu_T[0]); break;
case 2: gen_op_rsbl_T0_T1(); break;
default: return;
}
}
/* 32-bit pairwise ops end up the same as the elementwise versions. */
#define gen_helper_neon_pmax_s32 gen_helper_neon_max_s32
#define gen_helper_neon_pmax_u32 gen_helper_neon_max_u32
#define gen_helper_neon_pmin_s32 gen_helper_neon_min_s32
#define gen_helper_neon_pmin_u32 gen_helper_neon_min_u32
/* FIXME: This is wrong. They set the wrong overflow bit. */
#define gen_helper_neon_qadd_s32(a, e, b, c) gen_helper_add_saturate(a, b, c)
#define gen_helper_neon_qadd_u32(a, e, b, c) gen_helper_add_usaturate(a, b, c)
#define gen_helper_neon_qsub_s32(a, e, b, c) gen_helper_sub_saturate(a, b, c)
#define gen_helper_neon_qsub_u32(a, e, b, c) gen_helper_sub_usaturate(a, b, c)
#define GEN_NEON_INTEGER_OP_ENV(name) do { \
switch ((size << 1) | u) { \
case 0: \
gen_helper_neon_##name##_s8(cpu_T[0], cpu_env, cpu_T[0], cpu_T[1]); \
break; \
case 1: \
gen_helper_neon_##name##_u8(cpu_T[0], cpu_env, cpu_T[0], cpu_T[1]); \
break; \
case 2: \
gen_helper_neon_##name##_s16(cpu_T[0], cpu_env, cpu_T[0], cpu_T[1]); \
break; \
case 3: \
gen_helper_neon_##name##_u16(cpu_T[0], cpu_env, cpu_T[0], cpu_T[1]); \
break; \
case 4: \
gen_helper_neon_##name##_s32(cpu_T[0], cpu_env, cpu_T[0], cpu_T[1]); \
break; \
case 5: \
gen_helper_neon_##name##_u32(cpu_T[0], cpu_env, cpu_T[0], cpu_T[1]); \
break; \
default: return 1; \
}} while (0)
#define GEN_NEON_INTEGER_OP(name) do { \
switch ((size << 1) | u) { \
case 0: \
gen_helper_neon_##name##_s8(cpu_T[0], cpu_T[0], cpu_T[1]); \
break; \
case 1: \
gen_helper_neon_##name##_u8(cpu_T[0], cpu_T[0], cpu_T[1]); \
break; \
case 2: \
gen_helper_neon_##name##_s16(cpu_T[0], cpu_T[0], cpu_T[1]); \
break; \
case 3: \
gen_helper_neon_##name##_u16(cpu_T[0], cpu_T[0], cpu_T[1]); \
break; \
case 4: \
gen_helper_neon_##name##_s32(cpu_T[0], cpu_T[0], cpu_T[1]); \
break; \
case 5: \
gen_helper_neon_##name##_u32(cpu_T[0], cpu_T[0], cpu_T[1]); \
break; \
default: return 1; \
}} while (0)
static inline void
gen_neon_movl_scratch_T0(int scratch)
{
uint32_t offset;
offset = offsetof(CPUARMState, vfp.scratch[scratch]);
tcg_gen_st_i32(cpu_T[0], cpu_env, offset);
}
static inline void
gen_neon_movl_scratch_T1(int scratch)
{
uint32_t offset;
offset = offsetof(CPUARMState, vfp.scratch[scratch]);
tcg_gen_st_i32(cpu_T[1], cpu_env, offset);
}
static inline void
gen_neon_movl_T0_scratch(int scratch)
{
uint32_t offset;
offset = offsetof(CPUARMState, vfp.scratch[scratch]);
tcg_gen_ld_i32(cpu_T[0], cpu_env, offset);
}
static inline void
gen_neon_movl_T1_scratch(int scratch)
{
uint32_t offset;
offset = offsetof(CPUARMState, vfp.scratch[scratch]);
tcg_gen_ld_i32(cpu_T[1], cpu_env, offset);
}
static inline void gen_neon_get_scalar(int size, int reg)
{
if (size == 1) {
NEON_GET_REG(T0, reg >> 1, reg & 1);
} else {
NEON_GET_REG(T0, reg >> 2, (reg >> 1) & 1);
if (reg & 1)
gen_neon_dup_low16(cpu_T[0]);
else
gen_neon_dup_high16(cpu_T[0]);
}
}
static void gen_neon_unzip(int reg, int q, int tmp, int size)
{
int n;
for (n = 0; n < q + 1; n += 2) {
NEON_GET_REG(T0, reg, n);
NEON_GET_REG(T0, reg, n + n);
switch (size) {
case 0: gen_helper_neon_unzip_u8(); break;
case 1: gen_helper_neon_zip_u16(); break; /* zip and unzip are the same. */
case 2: /* no-op */; break;
default: abort();
}
gen_neon_movl_scratch_T0(tmp + n);
gen_neon_movl_scratch_T1(tmp + n + 1);
}
}
static struct {
int nregs;
int interleave;
int spacing;
} neon_ls_element_type[11] = {
{4, 4, 1},
{4, 4, 2},
{4, 1, 1},
{4, 2, 1},
{3, 3, 1},
{3, 3, 2},
{3, 1, 1},
{1, 1, 1},
{2, 2, 1},
{2, 2, 2},
{2, 1, 1}
};
/* Translate a NEON load/store element instruction. Return nonzero if the
instruction is invalid. */
static int disas_neon_ls_insn(CPUState * env, DisasContext *s, uint32_t insn)
{
int rd, rn, rm;
int op;
int nregs;
int interleave;
int stride;
int size;
int reg;
int pass;
int load;
int shift;
int n;
TCGv tmp;
TCGv tmp2;
if (!vfp_enabled(env))
return 1;
VFP_DREG_D(rd, insn);
rn = (insn >> 16) & 0xf;
rm = insn & 0xf;
load = (insn & (1 << 21)) != 0;
if ((insn & (1 << 23)) == 0) {
/* Load store all elements. */
op = (insn >> 8) & 0xf;
size = (insn >> 6) & 3;
if (op > 10 || size == 3)
return 1;
nregs = neon_ls_element_type[op].nregs;
interleave = neon_ls_element_type[op].interleave;
gen_movl_T1_reg(s, rn);
stride = (1 << size) * interleave;
for (reg = 0; reg < nregs; reg++) {
if (interleave > 2 || (interleave == 2 && nregs == 2)) {
gen_movl_T1_reg(s, rn);
gen_op_addl_T1_im((1 << size) * reg);
} else if (interleave == 2 && nregs == 4 && reg == 2) {
gen_movl_T1_reg(s, rn);
gen_op_addl_T1_im(1 << size);
}
for (pass = 0; pass < 2; pass++) {
if (size == 2) {
if (load) {
tmp = gen_ld32(cpu_T[1], IS_USER(s));
neon_store_reg(rd, pass, tmp);
} else {
tmp = neon_load_reg(rd, pass);
gen_st32(tmp, cpu_T[1], IS_USER(s));
}
gen_op_addl_T1_im(stride);
} else if (size == 1) {
if (load) {
tmp = gen_ld16u(cpu_T[1], IS_USER(s));
gen_op_addl_T1_im(stride);
tmp2 = gen_ld16u(cpu_T[1], IS_USER(s));
gen_op_addl_T1_im(stride);
gen_bfi(tmp, tmp, tmp2, 16, 0xffff);
dead_tmp(tmp2);
neon_store_reg(rd, pass, tmp);
} else {
tmp = neon_load_reg(rd, pass);
tmp2 = new_tmp();
tcg_gen_shri_i32(tmp2, tmp, 16);
gen_st16(tmp, cpu_T[1], IS_USER(s));
gen_op_addl_T1_im(stride);
gen_st16(tmp2, cpu_T[1], IS_USER(s));
gen_op_addl_T1_im(stride);
}
} else /* size == 0 */ {
if (load) {
TCGV_UNUSED(tmp2);
for (n = 0; n < 4; n++) {
tmp = gen_ld8u(cpu_T[1], IS_USER(s));
gen_op_addl_T1_im(stride);
if (n == 0) {
tmp2 = tmp;
} else {
gen_bfi(tmp2, tmp2, tmp, n * 8, 0xff);
dead_tmp(tmp);
}
}
neon_store_reg(rd, pass, tmp2);
} else {
tmp2 = neon_load_reg(rd, pass);
for (n = 0; n < 4; n++) {
tmp = new_tmp();
if (n == 0) {
tcg_gen_mov_i32(tmp, tmp2);
} else {
tcg_gen_shri_i32(tmp, tmp2, n * 8);
}
gen_st8(tmp, cpu_T[1], IS_USER(s));
gen_op_addl_T1_im(stride);
}
dead_tmp(tmp2);
}
}
}
rd += neon_ls_element_type[op].spacing;
}
stride = nregs * 8;
} else {
size = (insn >> 10) & 3;
if (size == 3) {
/* Load single element to all lanes. */
if (!load)
return 1;
size = (insn >> 6) & 3;
nregs = ((insn >> 8) & 3) + 1;
stride = (insn & (1 << 5)) ? 2 : 1;
gen_movl_T1_reg(s, rn);
for (reg = 0; reg < nregs; reg++) {
switch (size) {
case 0:
tmp = gen_ld8u(cpu_T[1], IS_USER(s));
gen_neon_dup_u8(tmp, 0);
break;
case 1:
tmp = gen_ld16u(cpu_T[1], IS_USER(s));
gen_neon_dup_low16(tmp);
break;
case 2:
tmp = gen_ld32(cpu_T[0], IS_USER(s));
break;
case 3:
return 1;
default: /* Avoid compiler warnings. */
abort();
}
gen_op_addl_T1_im(1 << size);
tmp2 = new_tmp();
tcg_gen_mov_i32(tmp2, tmp);
neon_store_reg(rd, 0, tmp2);
neon_store_reg(rd, 1, tmp);
rd += stride;
}
stride = (1 << size) * nregs;
} else {
/* Single element. */
pass = (insn >> 7) & 1;
switch (size) {
case 0:
shift = ((insn >> 5) & 3) * 8;
stride = 1;
break;
case 1:
shift = ((insn >> 6) & 1) * 16;
stride = (insn & (1 << 5)) ? 2 : 1;
break;
case 2:
shift = 0;
stride = (insn & (1 << 6)) ? 2 : 1;
break;
default:
abort();
}
nregs = ((insn >> 8) & 3) + 1;
gen_movl_T1_reg(s, rn);
for (reg = 0; reg < nregs; reg++) {
if (load) {
switch (size) {
case 0:
tmp = gen_ld8u(cpu_T[1], IS_USER(s));
break;
case 1:
tmp = gen_ld16u(cpu_T[1], IS_USER(s));
break;
case 2:
tmp = gen_ld32(cpu_T[1], IS_USER(s));
break;
default: /* Avoid compiler warnings. */
abort();
}
if (size != 2) {
tmp2 = neon_load_reg(rd, pass);
gen_bfi(tmp, tmp2, tmp, shift, size ? 0xffff : 0xff);
dead_tmp(tmp2);
}
neon_store_reg(rd, pass, tmp);
} else { /* Store */
tmp = neon_load_reg(rd, pass);
if (shift)
tcg_gen_shri_i32(tmp, tmp, shift);
switch (size) {
case 0:
gen_st8(tmp, cpu_T[1], IS_USER(s));
break;
case 1:
gen_st16(tmp, cpu_T[1], IS_USER(s));
break;
case 2:
gen_st32(tmp, cpu_T[1], IS_USER(s));
break;
}
}
rd += stride;
gen_op_addl_T1_im(1 << size);
}
stride = nregs * (1 << size);
}
}
if (rm != 15) {
TCGv base;
base = load_reg(s, rn);
if (rm == 13) {
tcg_gen_addi_i32(base, base, stride);
} else {
TCGv index;
index = load_reg(s, rm);
tcg_gen_add_i32(base, base, index);
dead_tmp(index);
}
store_reg(s, rn, base);
}
return 0;
}
/* Bitwise select. dest = c ? t : f. Clobbers T and F. */
static void gen_neon_bsl(TCGv dest, TCGv t, TCGv f, TCGv c)
{
tcg_gen_and_i32(t, t, c);
tcg_gen_bic_i32(f, f, c);
tcg_gen_or_i32(dest, t, f);
}
static inline void gen_neon_narrow(int size, TCGv dest, TCGv_i64 src)
{
switch (size) {
case 0: gen_helper_neon_narrow_u8(dest, src); break;
case 1: gen_helper_neon_narrow_u16(dest, src); break;
case 2: tcg_gen_trunc_i64_i32(dest, src); break;
default: abort();
}
}
static inline void gen_neon_narrow_sats(int size, TCGv dest, TCGv_i64 src)
{
switch (size) {
case 0: gen_helper_neon_narrow_sat_s8(dest, cpu_env, src); break;
case 1: gen_helper_neon_narrow_sat_s16(dest, cpu_env, src); break;
case 2: gen_helper_neon_narrow_sat_s32(dest, cpu_env, src); break;
default: abort();
}
}
static inline void gen_neon_narrow_satu(int size, TCGv dest, TCGv_i64 src)
{
switch (size) {
case 0: gen_helper_neon_narrow_sat_u8(dest, cpu_env, src); break;
case 1: gen_helper_neon_narrow_sat_u16(dest, cpu_env, src); break;
case 2: gen_helper_neon_narrow_sat_u32(dest, cpu_env, src); break;
default: abort();
}
}
static inline void gen_neon_shift_narrow(int size, TCGv var, TCGv shift,
int q, int u)
{
if (q) {
if (u) {
switch (size) {
case 1: gen_helper_neon_rshl_u16(var, var, shift); break;
case 2: gen_helper_neon_rshl_u32(var, var, shift); break;
default: abort();
}
} else {
switch (size) {
case 1: gen_helper_neon_rshl_s16(var, var, shift); break;
case 2: gen_helper_neon_rshl_s32(var, var, shift); break;
default: abort();
}
}
} else {
if (u) {
switch (size) {
case 1: gen_helper_neon_rshl_u16(var, var, shift); break;
case 2: gen_helper_neon_rshl_u32(var, var, shift); break;
default: abort();
}
} else {
switch (size) {
case 1: gen_helper_neon_shl_s16(var, var, shift); break;
case 2: gen_helper_neon_shl_s32(var, var, shift); break;
default: abort();
}
}
}
}
static inline void gen_neon_widen(TCGv_i64 dest, TCGv src, int size, int u)
{
if (u) {
switch (size) {
case 0: gen_helper_neon_widen_u8(dest, src); break;
case 1: gen_helper_neon_widen_u16(dest, src); break;
case 2: tcg_gen_extu_i32_i64(dest, src); break;
default: abort();
}
} else {
switch (size) {
case 0: gen_helper_neon_widen_s8(dest, src); break;
case 1: gen_helper_neon_widen_s16(dest, src); break;
case 2: tcg_gen_ext_i32_i64(dest, src); break;
default: abort();
}
}
dead_tmp(src);
}
static inline void gen_neon_addl(int size)
{
switch (size) {
case 0: gen_helper_neon_addl_u16(CPU_V001); break;
case 1: gen_helper_neon_addl_u32(CPU_V001); break;
case 2: tcg_gen_add_i64(CPU_V001); break;
default: abort();
}
}
static inline void gen_neon_subl(int size)
{
switch (size) {
case 0: gen_helper_neon_subl_u16(CPU_V001); break;
case 1: gen_helper_neon_subl_u32(CPU_V001); break;
case 2: tcg_gen_sub_i64(CPU_V001); break;
default: abort();
}
}
static inline void gen_neon_negl(TCGv_i64 var, int size)
{
switch (size) {
case 0: gen_helper_neon_negl_u16(var, var); break;
case 1: gen_helper_neon_negl_u32(var, var); break;
case 2: gen_helper_neon_negl_u64(var, var); break;
default: abort();
}
}
static inline void gen_neon_addl_saturate(TCGv_i64 op0, TCGv_i64 op1, int size)
{
switch (size) {
case 1: gen_helper_neon_addl_saturate_s32(op0, cpu_env, op0, op1); break;
case 2: gen_helper_neon_addl_saturate_s64(op0, cpu_env, op0, op1); break;
default: abort();
}
}
static inline void gen_neon_mull(TCGv_i64 dest, TCGv a, TCGv b, int size, int u)
{
TCGv_i64 tmp;
switch ((size << 1) | u) {
case 0: gen_helper_neon_mull_s8(dest, a, b); break;
case 1: gen_helper_neon_mull_u8(dest, a, b); break;
case 2: gen_helper_neon_mull_s16(dest, a, b); break;
case 3: gen_helper_neon_mull_u16(dest, a, b); break;
case 4:
tmp = gen_muls_i64_i32(a, b);
tcg_gen_mov_i64(dest, tmp);
break;
case 5:
tmp = gen_mulu_i64_i32(a, b);
tcg_gen_mov_i64(dest, tmp);
break;
default: abort();
}
if (size < 2) {
dead_tmp(b);
dead_tmp(a);
}
}
/* Translate a NEON data processing instruction. Return nonzero if the
instruction is invalid.
We process data in a mixture of 32-bit and 64-bit chunks.
Mostly we use 32-bit chunks so we can use normal scalar instructions. */
static int disas_neon_data_insn(CPUState * env, DisasContext *s, uint32_t insn)
{
int op;
int q;
int rd, rn, rm;
int size;
int shift;
int pass;
int count;
int pairwise;
int u;
int n;
uint32_t imm;
TCGv tmp;
TCGv tmp2;
TCGv tmp3;
TCGv_i64 tmp64;
if (!vfp_enabled(env))
return 1;
q = (insn & (1 << 6)) != 0;
u = (insn >> 24) & 1;
VFP_DREG_D(rd, insn);
VFP_DREG_N(rn, insn);
VFP_DREG_M(rm, insn);
size = (insn >> 20) & 3;
if ((insn & (1 << 23)) == 0) {
/* Three register same length. */
op = ((insn >> 7) & 0x1e) | ((insn >> 4) & 1);
if (size == 3 && (op == 1 || op == 5 || op == 8 || op == 9
|| op == 10 || op == 11 || op == 16)) {
/* 64-bit element instructions. */
for (pass = 0; pass < (q ? 2 : 1); pass++) {
neon_load_reg64(cpu_V0, rn + pass);
neon_load_reg64(cpu_V1, rm + pass);
switch (op) {
case 1: /* VQADD */
if (u) {
gen_helper_neon_add_saturate_u64(CPU_V001);
} else {
gen_helper_neon_add_saturate_s64(CPU_V001);
}
break;
case 5: /* VQSUB */
if (u) {
gen_helper_neon_sub_saturate_u64(CPU_V001);
} else {
gen_helper_neon_sub_saturate_s64(CPU_V001);
}
break;
case 8: /* VSHL */
if (u) {
gen_helper_neon_shl_u64(cpu_V0, cpu_V1, cpu_V0);
} else {
gen_helper_neon_shl_s64(cpu_V0, cpu_V1, cpu_V0);
}
break;
case 9: /* VQSHL */
if (u) {
gen_helper_neon_qshl_u64(cpu_V0, cpu_env,
cpu_V0, cpu_V0);
} else {
gen_helper_neon_qshl_s64(cpu_V1, cpu_env,
cpu_V1, cpu_V0);
}
break;
case 10: /* VRSHL */
if (u) {
gen_helper_neon_rshl_u64(cpu_V0, cpu_V1, cpu_V0);
} else {
gen_helper_neon_rshl_s64(cpu_V0, cpu_V1, cpu_V0);
}
break;
case 11: /* VQRSHL */
if (u) {
gen_helper_neon_qrshl_u64(cpu_V0, cpu_env,
cpu_V1, cpu_V0);
} else {
gen_helper_neon_qrshl_s64(cpu_V0, cpu_env,
cpu_V1, cpu_V0);
}
break;
case 16:
if (u) {
tcg_gen_sub_i64(CPU_V001);
} else {
tcg_gen_add_i64(CPU_V001);
}
break;
default:
abort();
}
neon_store_reg64(cpu_V0, rd + pass);
}
return 0;
}
switch (op) {
case 8: /* VSHL */
case 9: /* VQSHL */
case 10: /* VRSHL */
case 11: /* VQRSHL */
{
int rtmp;
/* Shift instruction operands are reversed. */
rtmp = rn;
rn = rm;
rm = rtmp;
pairwise = 0;
}
break;
case 20: /* VPMAX */
case 21: /* VPMIN */
case 23: /* VPADD */
pairwise = 1;
break;
case 26: /* VPADD (float) */
pairwise = (u && size < 2);
break;
case 30: /* VPMIN/VPMAX (float) */
pairwise = u;
break;
default:
pairwise = 0;
break;
}
for (pass = 0; pass < (q ? 4 : 2); pass++) {
if (pairwise) {
/* Pairwise. */
if (q)
n = (pass & 1) * 2;
else
n = 0;
if (pass < q + 1) {
NEON_GET_REG(T0, rn, n);
NEON_GET_REG(T1, rn, n + 1);
} else {
NEON_GET_REG(T0, rm, n);
NEON_GET_REG(T1, rm, n + 1);
}
} else {
/* Elementwise. */
NEON_GET_REG(T0, rn, pass);
NEON_GET_REG(T1, rm, pass);
}
switch (op) {
case 0: /* VHADD */
GEN_NEON_INTEGER_OP(hadd);
break;
case 1: /* VQADD */
GEN_NEON_INTEGER_OP_ENV(qadd);
break;
case 2: /* VRHADD */
GEN_NEON_INTEGER_OP(rhadd);
break;
case 3: /* Logic ops. */
switch ((u << 2) | size) {
case 0: /* VAND */
gen_op_andl_T0_T1();
break;
case 1: /* BIC */
gen_op_bicl_T0_T1();
break;
case 2: /* VORR */
gen_op_orl_T0_T1();
break;
case 3: /* VORN */
gen_op_notl_T1();
gen_op_orl_T0_T1();
break;
case 4: /* VEOR */
gen_op_xorl_T0_T1();
break;
case 5: /* VBSL */
tmp = neon_load_reg(rd, pass);
gen_neon_bsl(cpu_T[0], cpu_T[0], cpu_T[1], tmp);
dead_tmp(tmp);
break;
case 6: /* VBIT */
tmp = neon_load_reg(rd, pass);
gen_neon_bsl(cpu_T[0], cpu_T[0], tmp, cpu_T[1]);
dead_tmp(tmp);
break;
case 7: /* VBIF */
tmp = neon_load_reg(rd, pass);
gen_neon_bsl(cpu_T[0], tmp, cpu_T[0], cpu_T[1]);
dead_tmp(tmp);
break;
}
break;
case 4: /* VHSUB */
GEN_NEON_INTEGER_OP(hsub);
break;
case 5: /* VQSUB */
GEN_NEON_INTEGER_OP_ENV(qsub);
break;
case 6: /* VCGT */
GEN_NEON_INTEGER_OP(cgt);
break;
case 7: /* VCGE */
GEN_NEON_INTEGER_OP(cge);
break;
case 8: /* VSHL */
GEN_NEON_INTEGER_OP(shl);
break;
case 9: /* VQSHL */
GEN_NEON_INTEGER_OP_ENV(qshl);
break;
case 10: /* VRSHL */
GEN_NEON_INTEGER_OP(rshl);
break;
case 11: /* VQRSHL */
GEN_NEON_INTEGER_OP_ENV(qrshl);
break;
case 12: /* VMAX */
GEN_NEON_INTEGER_OP(max);
break;
case 13: /* VMIN */
GEN_NEON_INTEGER_OP(min);
break;
case 14: /* VABD */
GEN_NEON_INTEGER_OP(abd);
break;
case 15: /* VABA */
GEN_NEON_INTEGER_OP(abd);
NEON_GET_REG(T1, rd, pass);
gen_neon_add(size);
break;
case 16:
if (!u) { /* VADD */
if (gen_neon_add(size))
return 1;
} else { /* VSUB */
switch (size) {
case 0: gen_helper_neon_sub_u8(CPU_T001); break;
case 1: gen_helper_neon_sub_u16(CPU_T001); break;
case 2: gen_op_subl_T0_T1(); break;
default: return 1;
}
}
break;
case 17:
if (!u) { /* VTST */
switch (size) {
case 0: gen_helper_neon_tst_u8(CPU_T001); break;
case 1: gen_helper_neon_tst_u16(CPU_T001); break;
case 2: gen_helper_neon_tst_u32(CPU_T001); break;
default: return 1;
}
} else { /* VCEQ */
switch (size) {
case 0: gen_helper_neon_ceq_u8(CPU_T001); break;
case 1: gen_helper_neon_ceq_u16(CPU_T001); break;
case 2: gen_helper_neon_ceq_u32(CPU_T001); break;
default: return 1;
}
}
break;
case 18: /* Multiply. */
switch (size) {
case 0: gen_helper_neon_mul_u8(CPU_T001); break;
case 1: gen_helper_neon_mul_u16(CPU_T001); break;
case 2: gen_op_mul_T0_T1(); break;
default: return 1;
}
NEON_GET_REG(T1, rd, pass);
if (u) { /* VMLS */
gen_neon_rsb(size);
} else { /* VMLA */
gen_neon_add(size);
}
break;
case 19: /* VMUL */
if (u) { /* polynomial */
gen_helper_neon_mul_p8(CPU_T001);
} else { /* Integer */
switch (size) {
case 0: gen_helper_neon_mul_u8(CPU_T001); break;
case 1: gen_helper_neon_mul_u16(CPU_T001); break;
case 2: gen_op_mul_T0_T1(); break;
default: return 1;
}
}
break;
case 20: /* VPMAX */
GEN_NEON_INTEGER_OP(pmax);
break;
case 21: /* VPMIN */
GEN_NEON_INTEGER_OP(pmin);
break;
case 22: /* Hultiply high. */
if (!u) { /* VQDMULH */
switch (size) {
case 1: gen_helper_neon_qdmulh_s16(CPU_T0E01); break;
case 2: gen_helper_neon_qdmulh_s32(CPU_T0E01); break;
default: return 1;
}
} else { /* VQRDHMUL */
switch (size) {
case 1: gen_helper_neon_qrdmulh_s16(CPU_T0E01); break;
case 2: gen_helper_neon_qrdmulh_s32(CPU_T0E01); break;
default: return 1;
}
}
break;
case 23: /* VPADD */
if (u)
return 1;
switch (size) {
case 0: gen_helper_neon_padd_u8(CPU_T001); break;
case 1: gen_helper_neon_padd_u16(CPU_T001); break;
case 2: gen_op_addl_T0_T1(); break;
default: return 1;
}
break;
case 26: /* Floating point arithnetic. */
switch ((u << 2) | size) {
case 0: /* VADD */
gen_helper_neon_add_f32(CPU_T001);
break;
case 2: /* VSUB */
gen_helper_neon_sub_f32(CPU_T001);
break;
case 4: /* VPADD */
gen_helper_neon_add_f32(CPU_T001);
break;
case 6: /* VABD */
gen_helper_neon_abd_f32(CPU_T001);
break;
default:
return 1;
}
break;
case 27: /* Float multiply. */
gen_helper_neon_mul_f32(CPU_T001);
if (!u) {
NEON_GET_REG(T1, rd, pass);
if (size == 0) {
gen_helper_neon_add_f32(CPU_T001);
} else {
gen_helper_neon_sub_f32(cpu_T[0], cpu_T[1], cpu_T[0]);
}
}
break;
case 28: /* Float compare. */
if (!u) {
gen_helper_neon_ceq_f32(CPU_T001);
} else {
if (size == 0)
gen_helper_neon_cge_f32(CPU_T001);
else
gen_helper_neon_cgt_f32(CPU_T001);
}
break;
case 29: /* Float compare absolute. */
if (!u)
return 1;
if (size == 0)
gen_helper_neon_acge_f32(CPU_T001);
else
gen_helper_neon_acgt_f32(CPU_T001);
break;
case 30: /* Float min/max. */
if (size == 0)
gen_helper_neon_max_f32(CPU_T001);
else
gen_helper_neon_min_f32(CPU_T001);
break;
case 31:
if (size == 0)
gen_helper_recps_f32(cpu_T[0], cpu_T[0], cpu_T[1], cpu_env);
else
gen_helper_rsqrts_f32(cpu_T[0], cpu_T[0], cpu_T[1], cpu_env);
break;
default:
abort();
}
/* Save the result. For elementwise operations we can put it
straight into the destination register. For pairwise operations
we have to be careful to avoid clobbering the source operands. */
if (pairwise && rd == rm) {
gen_neon_movl_scratch_T0(pass);
} else {
NEON_SET_REG(T0, rd, pass);
}
} /* for pass */
if (pairwise && rd == rm) {
for (pass = 0; pass < (q ? 4 : 2); pass++) {
gen_neon_movl_T0_scratch(pass);
NEON_SET_REG(T0, rd, pass);
}
}
/* End of 3 register same size operations. */
} else if (insn & (1 << 4)) {
if ((insn & 0x00380080) != 0) {
/* Two registers and shift. */
op = (insn >> 8) & 0xf;
if (insn & (1 << 7)) {
/* 64-bit shift. */
size = 3;
} else {
size = 2;
while ((insn & (1 << (size + 19))) == 0)
size--;
}
shift = (insn >> 16) & ((1 << (3 + size)) - 1);
/* To avoid excessive dumplication of ops we implement shift
by immediate using the variable shift operations. */
if (op < 8) {
/* Shift by immediate:
VSHR, VSRA, VRSHR, VRSRA, VSRI, VSHL, VQSHL, VQSHLU. */
/* Right shifts are encoded as N - shift, where N is the
element size in bits. */
if (op <= 4)
shift = shift - (1 << (size + 3));
if (size == 3) {
count = q + 1;
} else {
count = q ? 4: 2;
}
switch (size) {
case 0:
imm = (uint8_t) shift;
imm |= imm << 8;
imm |= imm << 16;
break;
case 1:
imm = (uint16_t) shift;
imm |= imm << 16;
break;
case 2:
case 3:
imm = shift;
break;
default:
abort();
}
for (pass = 0; pass < count; pass++) {
if (size == 3) {
neon_load_reg64(cpu_V0, rm + pass);
tcg_gen_movi_i64(cpu_V1, imm);
switch (op) {
case 0: /* VSHR */
case 1: /* VSRA */
if (u)
gen_helper_neon_shl_u64(cpu_V0, cpu_V0, cpu_V1);
else
gen_helper_neon_shl_s64(cpu_V0, cpu_V0, cpu_V1);
break;
case 2: /* VRSHR */
case 3: /* VRSRA */
if (u)
gen_helper_neon_rshl_u64(cpu_V0, cpu_V0, cpu_V1);
else
gen_helper_neon_rshl_s64(cpu_V0, cpu_V0, cpu_V1);
break;
case 4: /* VSRI */
if (!u)
return 1;
gen_helper_neon_shl_u64(cpu_V0, cpu_V0, cpu_V1);
break;
case 5: /* VSHL, VSLI */
gen_helper_neon_shl_u64(cpu_V0, cpu_V0, cpu_V1);
break;
case 6: /* VQSHL */
if (u)
gen_helper_neon_qshl_u64(cpu_V0, cpu_env, cpu_V0, cpu_V1);
else
gen_helper_neon_qshl_s64(cpu_V0, cpu_env, cpu_V0, cpu_V1);
break;
case 7: /* VQSHLU */
gen_helper_neon_qshl_u64(cpu_V0, cpu_env, cpu_V0, cpu_V1);
break;
}
if (op == 1 || op == 3) {
/* Accumulate. */
neon_load_reg64(cpu_V0, rd + pass);
tcg_gen_add_i64(cpu_V0, cpu_V0, cpu_V1);
} else if (op == 4 || (op == 5 && u)) {
/* Insert */
cpu_abort(env, "VS[LR]I.64 not implemented");
}
neon_store_reg64(cpu_V0, rd + pass);
} else { /* size < 3 */
/* Operands in T0 and T1. */
gen_op_movl_T1_im(imm);
NEON_GET_REG(T0, rm, pass);
switch (op) {
case 0: /* VSHR */
case 1: /* VSRA */
GEN_NEON_INTEGER_OP(shl);
break;
case 2: /* VRSHR */
case 3: /* VRSRA */
GEN_NEON_INTEGER_OP(rshl);
break;
case 4: /* VSRI */
if (!u)
return 1;
GEN_NEON_INTEGER_OP(shl);
break;
case 5: /* VSHL, VSLI */
switch (size) {
case 0: gen_helper_neon_shl_u8(CPU_T001); break;
case 1: gen_helper_neon_shl_u16(CPU_T001); break;
case 2: gen_helper_neon_shl_u32(CPU_T001); break;
default: return 1;
}
break;
case 6: /* VQSHL */
GEN_NEON_INTEGER_OP_ENV(qshl);
break;
case 7: /* VQSHLU */
switch (size) {
case 0: gen_helper_neon_qshl_u8(CPU_T0E01); break;
case 1: gen_helper_neon_qshl_u16(CPU_T0E01); break;
case 2: gen_helper_neon_qshl_u32(CPU_T0E01); break;
default: return 1;
}
break;
}
if (op == 1 || op == 3) {
/* Accumulate. */
NEON_GET_REG(T1, rd, pass);
gen_neon_add(size);
} else if (op == 4 || (op == 5 && u)) {
/* Insert */
switch (size) {
case 0:
if (op == 4)
imm = 0xff >> -shift;
else
imm = (uint8_t)(0xff << shift);
imm |= imm << 8;
imm |= imm << 16;
break;
case 1:
if (op == 4)
imm = 0xffff >> -shift;
else
imm = (uint16_t)(0xffff << shift);
imm |= imm << 16;
break;
case 2:
if (op == 4)
imm = 0xffffffffu >> -shift;
else
imm = 0xffffffffu << shift;
break;
default:
abort();
}
tmp = neon_load_reg(rd, pass);
tcg_gen_andi_i32(cpu_T[0], cpu_T[0], imm);
tcg_gen_andi_i32(tmp, tmp, ~imm);
tcg_gen_or_i32(cpu_T[0], cpu_T[0], tmp);
}
NEON_SET_REG(T0, rd, pass);
}
} /* for pass */
} else if (op < 10) {
/* Shift by immediate and narrow:
VSHRN, VRSHRN, VQSHRN, VQRSHRN. */
shift = shift - (1 << (size + 3));
size++;
switch (size) {
case 1:
imm = (uint16_t)shift;
imm |= imm << 16;
tmp2 = tcg_const_i32(imm);
TCGV_UNUSED_I64(tmp64);
break;
case 2:
imm = (uint32_t)shift;
tmp2 = tcg_const_i32(imm);
TCGV_UNUSED_I64(tmp64);
break;
case 3:
tmp64 = tcg_const_i64(shift);
TCGV_UNUSED(tmp2);
break;
default:
abort();
}
for (pass = 0; pass < 2; pass++) {
if (size == 3) {
neon_load_reg64(cpu_V0, rm + pass);
if (q) {
if (u)
gen_helper_neon_rshl_u64(cpu_V0, cpu_V0, tmp64);
else
gen_helper_neon_rshl_s64(cpu_V0, cpu_V0, tmp64);
} else {
if (u)
gen_helper_neon_shl_u64(cpu_V0, cpu_V0, tmp64);
else
gen_helper_neon_shl_s64(cpu_V0, cpu_V0, tmp64);
}
} else {
tmp = neon_load_reg(rm + pass, 0);
gen_neon_shift_narrow(size, tmp, tmp2, q, u);
tmp3 = neon_load_reg(rm + pass, 1);
gen_neon_shift_narrow(size, tmp3, tmp2, q, u);
tcg_gen_concat_i32_i64(cpu_V0, tmp, tmp3);
dead_tmp(tmp);
dead_tmp(tmp3);
}
tmp = new_tmp();
if (op == 8 && !u) {
gen_neon_narrow(size - 1, tmp, cpu_V0);
} else {
if (op == 8)
gen_neon_narrow_sats(size - 1, tmp, cpu_V0);
else
gen_neon_narrow_satu(size - 1, tmp, cpu_V0);
}
if (pass == 0) {
tmp2 = tmp;
} else {
neon_store_reg(rd, 0, tmp2);
neon_store_reg(rd, 1, tmp);
}
} /* for pass */
} else if (op == 10) {
/* VSHLL */
if (q || size == 3)
return 1;
tmp = neon_load_reg(rm, 0);
tmp2 = neon_load_reg(rm, 1);
for (pass = 0; pass < 2; pass++) {
if (pass == 1)
tmp = tmp2;
gen_neon_widen(cpu_V0, tmp, size, u);
if (shift != 0) {
/* The shift is less than the width of the source
type, so we can just shift the whole register. */
tcg_gen_shli_i64(cpu_V0, cpu_V0, shift);
if (size < 2 || !u) {
uint64_t imm64;
if (size == 0) {
imm = (0xffu >> (8 - shift));
imm |= imm << 16;
} else {
imm = 0xffff >> (16 - shift);
}
imm64 = imm | (((uint64_t)imm) << 32);
tcg_gen_andi_i64(cpu_V0, cpu_V0, imm64);
}
}
neon_store_reg64(cpu_V0, rd + pass);
}
} else if (op == 15 || op == 16) {
/* VCVT fixed-point. */
for (pass = 0; pass < (q ? 4 : 2); pass++) {
tcg_gen_ld_f32(cpu_F0s, cpu_env, neon_reg_offset(rm, pass));
if (op & 1) {
if (u)
gen_vfp_ulto(0, shift);
else
gen_vfp_slto(0, shift);
} else {
if (u)
gen_vfp_toul(0, shift);
else
gen_vfp_tosl(0, shift);
}
tcg_gen_st_f32(cpu_F0s, cpu_env, neon_reg_offset(rd, pass));
}
} else {
return 1;
}
} else { /* (insn & 0x00380080) == 0 */
int invert;
op = (insn >> 8) & 0xf;
/* One register and immediate. */
imm = (u << 7) | ((insn >> 12) & 0x70) | (insn & 0xf);
invert = (insn & (1 << 5)) != 0;
switch (op) {
case 0: case 1:
/* no-op */
break;
case 2: case 3:
imm <<= 8;
break;
case 4: case 5:
imm <<= 16;
break;
case 6: case 7:
imm <<= 24;
break;
case 8: case 9:
imm |= imm << 16;
break;
case 10: case 11:
imm = (imm << 8) | (imm << 24);
break;
case 12:
imm = (imm < 8) | 0xff;
break;
case 13:
imm = (imm << 16) | 0xffff;
break;
case 14:
imm |= (imm << 8) | (imm << 16) | (imm << 24);
if (invert)
imm = ~imm;
break;
case 15:
imm = ((imm & 0x80) << 24) | ((imm & 0x3f) << 19)
| ((imm & 0x40) ? (0x1f << 25) : (1 << 30));
break;
}
if (invert)
imm = ~imm;
if (op != 14 || !invert)
gen_op_movl_T1_im(imm);
for (pass = 0; pass < (q ? 4 : 2); pass++) {
if (op & 1 && op < 12) {
tmp = neon_load_reg(rd, pass);
if (invert) {
/* The immediate value has already been inverted, so
BIC becomes AND. */
tcg_gen_andi_i32(tmp, tmp, imm);
} else {
tcg_gen_ori_i32(tmp, tmp, imm);
}
} else {
/* VMOV, VMVN. */
tmp = new_tmp();
if (op == 14 && invert) {
uint32_t val;
val = 0;
for (n = 0; n < 4; n++) {
if (imm & (1 << (n + (pass & 1) * 4)))
val |= 0xff << (n * 8);
}
tcg_gen_movi_i32(tmp, val);
} else {
tcg_gen_movi_i32(tmp, imm);
}
}
neon_store_reg(rd, pass, tmp);
}
}
} else { /* (insn & 0x00800010 == 0x00800000) */
if (size != 3) {
op = (insn >> 8) & 0xf;
if ((insn & (1 << 6)) == 0) {
/* Three registers of different lengths. */
int src1_wide;
int src2_wide;
int prewiden;
/* prewiden, src1_wide, src2_wide */
static const int neon_3reg_wide[16][3] = {
{1, 0, 0}, /* VADDL */
{1, 1, 0}, /* VADDW */
{1, 0, 0}, /* VSUBL */
{1, 1, 0}, /* VSUBW */
{0, 1, 1}, /* VADDHN */
{0, 0, 0}, /* VABAL */
{0, 1, 1}, /* VSUBHN */
{0, 0, 0}, /* VABDL */
{0, 0, 0}, /* VMLAL */
{0, 0, 0}, /* VQDMLAL */
{0, 0, 0}, /* VMLSL */
{0, 0, 0}, /* VQDMLSL */
{0, 0, 0}, /* Integer VMULL */
{0, 0, 0}, /* VQDMULL */
{0, 0, 0} /* Polynomial VMULL */
};
prewiden = neon_3reg_wide[op][0];
src1_wide = neon_3reg_wide[op][1];
src2_wide = neon_3reg_wide[op][2];
if (size == 0 && (op == 9 || op == 11 || op == 13))
return 1;
/* Avoid overlapping operands. Wide source operands are
always aligned so will never overlap with wide
destinations in problematic ways. */
if (rd == rm && !src2_wide) {
NEON_GET_REG(T0, rm, 1);
gen_neon_movl_scratch_T0(2);
} else if (rd == rn && !src1_wide) {
NEON_GET_REG(T0, rn, 1);
gen_neon_movl_scratch_T0(2);
}
TCGV_UNUSED(tmp3);
for (pass = 0; pass < 2; pass++) {
if (src1_wide) {
neon_load_reg64(cpu_V0, rn + pass);
TCGV_UNUSED(tmp);
} else {
if (pass == 1 && rd == rn) {
gen_neon_movl_T0_scratch(2);
tmp = new_tmp();
tcg_gen_mov_i32(tmp, cpu_T[0]);
} else {
tmp = neon_load_reg(rn, pass);
}
if (prewiden) {
gen_neon_widen(cpu_V0, tmp, size, u);
}
}
if (src2_wide) {
neon_load_reg64(cpu_V1, rm + pass);
TCGV_UNUSED(tmp2);
} else {
if (pass == 1 && rd == rm) {
gen_neon_movl_T0_scratch(2);
tmp2 = new_tmp();
tcg_gen_mov_i32(tmp2, cpu_T[0]);
} else {
tmp2 = neon_load_reg(rm, pass);
}
if (prewiden) {
gen_neon_widen(cpu_V1, tmp2, size, u);
}
}
switch (op) {
case 0: case 1: case 4: /* VADDL, VADDW, VADDHN, VRADDHN */
gen_neon_addl(size);
break;
case 2: case 3: case 6: /* VSUBL, VSUBW, VSUBHL, VRSUBHL */
gen_neon_subl(size);
break;
case 5: case 7: /* VABAL, VABDL */
switch ((size << 1) | u) {
case 0:
gen_helper_neon_abdl_s16(cpu_V0, tmp, tmp2);
break;
case 1:
gen_helper_neon_abdl_u16(cpu_V0, tmp, tmp2);
break;
case 2:
gen_helper_neon_abdl_s32(cpu_V0, tmp, tmp2);
break;
case 3:
gen_helper_neon_abdl_u32(cpu_V0, tmp, tmp2);
break;
case 4:
gen_helper_neon_abdl_s64(cpu_V0, tmp, tmp2);
break;
case 5:
gen_helper_neon_abdl_u64(cpu_V0, tmp, tmp2);
break;
default: abort();
}
dead_tmp(tmp2);
dead_tmp(tmp);
break;
case 8: case 9: case 10: case 11: case 12: case 13:
/* VMLAL, VQDMLAL, VMLSL, VQDMLSL, VMULL, VQDMULL */
gen_neon_mull(cpu_V0, tmp, tmp2, size, u);
break;
case 14: /* Polynomial VMULL */
cpu_abort(env, "Polynomial VMULL not implemented");
default: /* 15 is RESERVED. */
return 1;
}
if (op == 5 || op == 13 || (op >= 8 && op <= 11)) {
/* Accumulate. */
if (op == 10 || op == 11) {
gen_neon_negl(cpu_V0, size);
}
if (op != 13) {
neon_load_reg64(cpu_V1, rd + pass);
}
switch (op) {
case 5: case 8: case 10: /* VABAL, VMLAL, VMLSL */
gen_neon_addl(size);
break;
case 9: case 11: /* VQDMLAL, VQDMLSL */
gen_neon_addl_saturate(cpu_V0, cpu_V0, size);
gen_neon_addl_saturate(cpu_V0, cpu_V1, size);
break;
/* Fall through. */
case 13: /* VQDMULL */
gen_neon_addl_saturate(cpu_V0, cpu_V0, size);
break;
default:
abort();
}
neon_store_reg64(cpu_V0, rd + pass);
} else if (op == 4 || op == 6) {
/* Narrowing operation. */
tmp = new_tmp();
if (u) {
switch (size) {
case 0:
gen_helper_neon_narrow_high_u8(tmp, cpu_V0);
break;
case 1:
gen_helper_neon_narrow_high_u16(tmp, cpu_V0);
break;
case 2:
tcg_gen_shri_i64(cpu_V0, cpu_V0, 32);
tcg_gen_trunc_i64_i32(tmp, cpu_V0);
break;
default: abort();
}
} else {
switch (size) {
case 0:
gen_helper_neon_narrow_round_high_u8(tmp, cpu_V0);
break;
case 1:
gen_helper_neon_narrow_round_high_u16(tmp, cpu_V0);
break;
case 2:
tcg_gen_addi_i64(cpu_V0, cpu_V0, 1u << 31);
tcg_gen_shri_i64(cpu_V0, cpu_V0, 32);
tcg_gen_trunc_i64_i32(tmp, cpu_V0);
break;
default: abort();
}
}
if (pass == 0) {
tmp3 = tmp;
} else {
neon_store_reg(rd, 0, tmp3);
neon_store_reg(rd, 1, tmp);
}
} else {
/* Write back the result. */
neon_store_reg64(cpu_V0, rd + pass);
}
}
} else {
/* Two registers and a scalar. */
switch (op) {
case 0: /* Integer VMLA scalar */
case 1: /* Float VMLA scalar */
case 4: /* Integer VMLS scalar */
case 5: /* Floating point VMLS scalar */
case 8: /* Integer VMUL scalar */
case 9: /* Floating point VMUL scalar */
case 12: /* VQDMULH scalar */
case 13: /* VQRDMULH scalar */
gen_neon_get_scalar(size, rm);
gen_neon_movl_scratch_T0(0);
for (pass = 0; pass < (u ? 4 : 2); pass++) {
if (pass != 0)
gen_neon_movl_T0_scratch(0);
NEON_GET_REG(T1, rn, pass);
if (op == 12) {
if (size == 1) {
gen_helper_neon_qdmulh_s16(CPU_T0E01);
} else {
gen_helper_neon_qdmulh_s32(CPU_T0E01);
}
} else if (op == 13) {
if (size == 1) {
gen_helper_neon_qrdmulh_s16(CPU_T0E01);
} else {
gen_helper_neon_qrdmulh_s32(CPU_T0E01);
}
} else if (op & 1) {
gen_helper_neon_mul_f32(CPU_T001);
} else {
switch (size) {
case 0: gen_helper_neon_mul_u8(CPU_T001); break;
case 1: gen_helper_neon_mul_u16(CPU_T001); break;
case 2: gen_op_mul_T0_T1(); break;
default: return 1;
}
}
if (op < 8) {
/* Accumulate. */
NEON_GET_REG(T1, rd, pass);
switch (op) {
case 0:
gen_neon_add(size);
break;
case 1:
gen_helper_neon_add_f32(CPU_T001);
break;
case 4:
gen_neon_rsb(size);
break;
case 5:
gen_helper_neon_sub_f32(cpu_T[0], cpu_T[1], cpu_T[0]);
break;
default:
abort();
}
}
NEON_SET_REG(T0, rd, pass);
}
break;
case 2: /* VMLAL sclar */
case 3: /* VQDMLAL scalar */
case 6: /* VMLSL scalar */
case 7: /* VQDMLSL scalar */
case 10: /* VMULL scalar */
case 11: /* VQDMULL scalar */
if (size == 0 && (op == 3 || op == 7 || op == 11))
return 1;
gen_neon_get_scalar(size, rm);
NEON_GET_REG(T1, rn, 1);
for (pass = 0; pass < 2; pass++) {
if (pass == 0) {
tmp = neon_load_reg(rn, 0);
} else {
tmp = new_tmp();
tcg_gen_mov_i32(tmp, cpu_T[1]);
}
tmp2 = new_tmp();
tcg_gen_mov_i32(tmp2, cpu_T[0]);
gen_neon_mull(cpu_V0, tmp, tmp2, size, u);
if (op == 6 || op == 7) {
gen_neon_negl(cpu_V0, size);
}
if (op != 11) {
neon_load_reg64(cpu_V1, rd + pass);
}
switch (op) {
case 2: case 6:
gen_neon_addl(size);
break;
case 3: case 7:
gen_neon_addl_saturate(cpu_V0, cpu_V0, size);
gen_neon_addl_saturate(cpu_V0, cpu_V1, size);
break;
case 10:
/* no-op */
break;
case 11:
gen_neon_addl_saturate(cpu_V0, cpu_V0, size);
break;
default:
abort();
}
neon_store_reg64(cpu_V0, rd + pass);
}
break;
default: /* 14 and 15 are RESERVED */
return 1;
}
}
} else { /* size == 3 */
if (!u) {
/* Extract. */
imm = (insn >> 8) & 0xf;
count = q + 1;
if (imm > 7 && !q)
return 1;
if (imm == 0) {
neon_load_reg64(cpu_V0, rn);
if (q) {
neon_load_reg64(cpu_V1, rn + 1);
}
} else if (imm == 8) {
neon_load_reg64(cpu_V0, rn + 1);
if (q) {
neon_load_reg64(cpu_V1, rm);
}
} else if (q) {
tmp64 = tcg_temp_new_i64();
if (imm < 8) {
neon_load_reg64(cpu_V0, rn);
neon_load_reg64(tmp64, rn + 1);
} else {
neon_load_reg64(cpu_V0, rn + 1);
neon_load_reg64(tmp64, rm);
}
tcg_gen_shri_i64(cpu_V0, cpu_V0, (imm & 7) * 8);
tcg_gen_shli_i64(cpu_V1, tmp64, 64 - ((imm & 7) * 8));
tcg_gen_or_i64(cpu_V0, cpu_V0, cpu_V1);
if (imm < 8) {
neon_load_reg64(cpu_V1, rm);
} else {
neon_load_reg64(cpu_V1, rm + 1);
imm -= 8;
}
tcg_gen_shli_i64(cpu_V1, cpu_V1, 64 - (imm * 8));
tcg_gen_shri_i64(tmp64, tmp64, imm * 8);
tcg_gen_or_i64(cpu_V1, cpu_V1, tmp64);
} else {
/* BUGFIX */
neon_load_reg64(cpu_V0, rn);
tcg_gen_shri_i64(cpu_V0, cpu_V0, imm * 8);
neon_load_reg64(cpu_V1, rm);
tcg_gen_shli_i64(cpu_V1, cpu_V1, 64 - (imm * 8));
tcg_gen_or_i64(cpu_V0, cpu_V0, cpu_V1);
}
neon_store_reg64(cpu_V0, rd);
if (q) {
neon_store_reg64(cpu_V1, rd + 1);
}
} else if ((insn & (1 << 11)) == 0) {
/* Two register misc. */
op = ((insn >> 12) & 0x30) | ((insn >> 7) & 0xf);
size = (insn >> 18) & 3;
switch (op) {
case 0: /* VREV64 */
if (size == 3)
return 1;
for (pass = 0; pass < (q ? 2 : 1); pass++) {
NEON_GET_REG(T0, rm, pass * 2);
NEON_GET_REG(T1, rm, pass * 2 + 1);
switch (size) {
case 0: tcg_gen_bswap32_i32(cpu_T[0], cpu_T[0]); break;
case 1: gen_swap_half(cpu_T[0]); break;
case 2: /* no-op */ break;
default: abort();
}
NEON_SET_REG(T0, rd, pass * 2 + 1);
if (size == 2) {
NEON_SET_REG(T1, rd, pass * 2);
} else {
gen_op_movl_T0_T1();
switch (size) {
case 0: tcg_gen_bswap32_i32(cpu_T[0], cpu_T[0]); break;
case 1: gen_swap_half(cpu_T[0]); break;
default: abort();
}
NEON_SET_REG(T0, rd, pass * 2);
}
}
break;
case 4: case 5: /* VPADDL */
case 12: case 13: /* VPADAL */
if (size == 3)
return 1;
for (pass = 0; pass < q + 1; pass++) {
tmp = neon_load_reg(rm, pass * 2);
gen_neon_widen(cpu_V0, tmp, size, op & 1);
tmp = neon_load_reg(rm, pass * 2 + 1);
gen_neon_widen(cpu_V1, tmp, size, op & 1);
switch (size) {
case 0: gen_helper_neon_paddl_u16(CPU_V001); break;
case 1: gen_helper_neon_paddl_u32(CPU_V001); break;
case 2: tcg_gen_add_i64(CPU_V001); break;
default: abort();
}
if (op >= 12) {
/* Accumulate. */
neon_load_reg64(cpu_V1, rd + pass);
gen_neon_addl(size);
}
neon_store_reg64(cpu_V0, rd + pass);
}
break;
case 33: /* VTRN */
if (size == 2) {
for (n = 0; n < (q ? 4 : 2); n += 2) {
NEON_GET_REG(T0, rm, n);
NEON_GET_REG(T1, rd, n + 1);
NEON_SET_REG(T1, rm, n);
NEON_SET_REG(T0, rd, n + 1);
}
} else {
goto elementwise;
}
break;
case 34: /* VUZP */
/* Reg Before After
Rd A3 A2 A1 A0 B2 B0 A2 A0
Rm B3 B2 B1 B0 B3 B1 A3 A1
*/
if (size == 3)
return 1;
gen_neon_unzip(rd, q, 0, size);
gen_neon_unzip(rm, q, 4, size);
if (q) {
static int unzip_order_q[8] =
{0, 2, 4, 6, 1, 3, 5, 7};
for (n = 0; n < 8; n++) {
int reg = (n < 4) ? rd : rm;
gen_neon_movl_T0_scratch(unzip_order_q[n]);
NEON_SET_REG(T0, reg, n % 4);
}
} else {
static int unzip_order[4] =
{0, 4, 1, 5};
for (n = 0; n < 4; n++) {
int reg = (n < 2) ? rd : rm;
gen_neon_movl_T0_scratch(unzip_order[n]);
NEON_SET_REG(T0, reg, n % 2);
}
}
break;
case 35: /* VZIP */
/* Reg Before After
Rd A3 A2 A1 A0 B1 A1 B0 A0
Rm B3 B2 B1 B0 B3 A3 B2 A2
*/
if (size == 3)
return 1;
count = (q ? 4 : 2);
for (n = 0; n < count; n++) {
NEON_GET_REG(T0, rd, n);
NEON_GET_REG(T1, rd, n);
switch (size) {
case 0: gen_helper_neon_zip_u8(); break;
case 1: gen_helper_neon_zip_u16(); break;
case 2: /* no-op */; break;
default: abort();
}
gen_neon_movl_scratch_T0(n * 2);
gen_neon_movl_scratch_T1(n * 2 + 1);
}
for (n = 0; n < count * 2; n++) {
int reg = (n < count) ? rd : rm;
gen_neon_movl_T0_scratch(n);
NEON_SET_REG(T0, reg, n % count);
}
break;
case 36: case 37: /* VMOVN, VQMOVUN, VQMOVN */
if (size == 3)
return 1;
TCGV_UNUSED(tmp2);
for (pass = 0; pass < 2; pass++) {
neon_load_reg64(cpu_V0, rm + pass);
tmp = new_tmp();
if (op == 36 && q == 0) {
gen_neon_narrow(size, tmp, cpu_V0);
} else if (q) {
gen_neon_narrow_satu(size, tmp, cpu_V0);
} else {
gen_neon_narrow_sats(size, tmp, cpu_V0);
}
if (pass == 0) {
tmp2 = tmp;
} else {
neon_store_reg(rd, 0, tmp2);
neon_store_reg(rd, 1, tmp);
}
}
break;
case 38: /* VSHLL */
if (q || size == 3)
return 1;
tmp = neon_load_reg(rm, 0);
tmp2 = neon_load_reg(rm, 1);
for (pass = 0; pass < 2; pass++) {
if (pass == 1)
tmp = tmp2;
gen_neon_widen(cpu_V0, tmp, size, 1);
neon_store_reg64(cpu_V0, rd + pass);
}
break;
default:
elementwise:
for (pass = 0; pass < (q ? 4 : 2); pass++) {
if (op == 30 || op == 31 || op >= 58) {
tcg_gen_ld_f32(cpu_F0s, cpu_env,
neon_reg_offset(rm, pass));
} else {
NEON_GET_REG(T0, rm, pass);
}
switch (op) {
case 1: /* VREV32 */
switch (size) {
case 0: tcg_gen_bswap32_i32(cpu_T[0], cpu_T[0]); break;
case 1: gen_swap_half(cpu_T[0]); break;
default: return 1;
}
break;
case 2: /* VREV16 */
if (size != 0)
return 1;
gen_rev16(cpu_T[0]);
break;
case 8: /* CLS */
switch (size) {
case 0: gen_helper_neon_cls_s8(cpu_T[0], cpu_T[0]); break;
case 1: gen_helper_neon_cls_s16(cpu_T[0], cpu_T[0]); break;
case 2: gen_helper_neon_cls_s32(cpu_T[0], cpu_T[0]); break;
default: return 1;
}
break;
case 9: /* CLZ */
switch (size) {
case 0: gen_helper_neon_clz_u8(cpu_T[0], cpu_T[0]); break;
case 1: gen_helper_neon_clz_u16(cpu_T[0], cpu_T[0]); break;
case 2: gen_helper_clz(cpu_T[0], cpu_T[0]); break;
default: return 1;
}
break;
case 10: /* CNT */
if (size != 0)
return 1;
gen_helper_neon_cnt_u8(cpu_T[0], cpu_T[0]);
break;
case 11: /* VNOT */
if (size != 0)
return 1;
gen_op_notl_T0();
break;
case 14: /* VQABS */
switch (size) {
case 0: gen_helper_neon_qabs_s8(cpu_T[0], cpu_env, cpu_T[0]); break;
case 1: gen_helper_neon_qabs_s16(cpu_T[0], cpu_env, cpu_T[0]); break;
case 2: gen_helper_neon_qabs_s32(cpu_T[0], cpu_env, cpu_T[0]); break;
default: return 1;
}
break;
case 15: /* VQNEG */
switch (size) {
case 0: gen_helper_neon_qneg_s8(cpu_T[0], cpu_env, cpu_T[0]); break;
case 1: gen_helper_neon_qneg_s16(cpu_T[0], cpu_env, cpu_T[0]); break;
case 2: gen_helper_neon_qneg_s32(cpu_T[0], cpu_env, cpu_T[0]); break;
default: return 1;
}
break;
case 16: case 19: /* VCGT #0, VCLE #0 */
gen_op_movl_T1_im(0);
switch(size) {
case 0: gen_helper_neon_cgt_s8(CPU_T001); break;
case 1: gen_helper_neon_cgt_s16(CPU_T001); break;
case 2: gen_helper_neon_cgt_s32(CPU_T001); break;
default: return 1;
}
if (op == 19)
gen_op_notl_T0();
break;
case 17: case 20: /* VCGE #0, VCLT #0 */
gen_op_movl_T1_im(0);
switch(size) {
case 0: gen_helper_neon_cge_s8(CPU_T001); break;
case 1: gen_helper_neon_cge_s16(CPU_T001); break;
case 2: gen_helper_neon_cge_s32(CPU_T001); break;
default: return 1;
}
if (op == 20)
gen_op_notl_T0();
break;
case 18: /* VCEQ #0 */
gen_op_movl_T1_im(0);
switch(size) {
case 0: gen_helper_neon_ceq_u8(CPU_T001); break;
case 1: gen_helper_neon_ceq_u16(CPU_T001); break;
case 2: gen_helper_neon_ceq_u32(CPU_T001); break;
default: return 1;
}
break;
case 22: /* VABS */
switch(size) {
case 0: gen_helper_neon_abs_s8(cpu_T[0], cpu_T[0]); break;
case 1: gen_helper_neon_abs_s16(cpu_T[0], cpu_T[0]); break;
case 2: tcg_gen_abs_i32(cpu_T[0], cpu_T[0]); break;
default: return 1;
}
break;
case 23: /* VNEG */
gen_op_movl_T1_im(0);
if (size == 3)
return 1;
gen_neon_rsb(size);
break;
case 24: case 27: /* Float VCGT #0, Float VCLE #0 */
gen_op_movl_T1_im(0);
gen_helper_neon_cgt_f32(CPU_T001);
if (op == 27)
gen_op_notl_T0();
break;
case 25: case 28: /* Float VCGE #0, Float VCLT #0 */
gen_op_movl_T1_im(0);
gen_helper_neon_cge_f32(CPU_T001);
if (op == 28)
gen_op_notl_T0();
break;
case 26: /* Float VCEQ #0 */
gen_op_movl_T1_im(0);
gen_helper_neon_ceq_f32(CPU_T001);
break;
case 30: /* Float VABS */
gen_vfp_abs(0);
break;
case 31: /* Float VNEG */
gen_vfp_neg(0);
break;
case 32: /* VSWP */
NEON_GET_REG(T1, rd, pass);
NEON_SET_REG(T1, rm, pass);
break;
case 33: /* VTRN */
NEON_GET_REG(T1, rd, pass);
switch (size) {
case 0: gen_helper_neon_trn_u8(); break;
case 1: gen_helper_neon_trn_u16(); break;
case 2: abort();
default: return 1;
}
NEON_SET_REG(T1, rm, pass);
break;
case 56: /* Integer VRECPE */
gen_helper_recpe_u32(cpu_T[0], cpu_T[0], cpu_env);
break;
case 57: /* Integer VRSQRTE */
gen_helper_rsqrte_u32(cpu_T[0], cpu_T[0], cpu_env);
break;
case 58: /* Float VRECPE */
gen_helper_recpe_f32(cpu_F0s, cpu_F0s, cpu_env);
break;
case 59: /* Float VRSQRTE */
gen_helper_rsqrte_f32(cpu_F0s, cpu_F0s, cpu_env);
break;
case 60: /* VCVT.F32.S32 */
gen_vfp_tosiz(0);
break;
case 61: /* VCVT.F32.U32 */
gen_vfp_touiz(0);
break;
case 62: /* VCVT.S32.F32 */
gen_vfp_sito(0);
break;
case 63: /* VCVT.U32.F32 */
gen_vfp_uito(0);
break;
default:
/* Reserved: 21, 29, 39-56 */
return 1;
}
if (op == 30 || op == 31 || op >= 58) {
tcg_gen_st_f32(cpu_F0s, cpu_env,
neon_reg_offset(rd, pass));
} else {
NEON_SET_REG(T0, rd, pass);
}
}
break;
}
} else if ((insn & (1 << 10)) == 0) {
/* VTBL, VTBX. */
n = ((insn >> 5) & 0x18) + 8;
if (insn & (1 << 6)) {
tmp = neon_load_reg(rd, 0);
} else {
tmp = new_tmp();
tcg_gen_movi_i32(tmp, 0);
}
tmp2 = neon_load_reg(rm, 0);
gen_helper_neon_tbl(tmp2, tmp2, tmp, tcg_const_i32(rn),
tcg_const_i32(n));
dead_tmp(tmp);
if (insn & (1 << 6)) {
tmp = neon_load_reg(rd, 1);
} else {
tmp = new_tmp();
tcg_gen_movi_i32(tmp, 0);
}
tmp3 = neon_load_reg(rm, 1);
gen_helper_neon_tbl(tmp3, tmp3, tmp, tcg_const_i32(rn),
tcg_const_i32(n));
neon_store_reg(rd, 0, tmp2);
neon_store_reg(rd, 1, tmp3);
dead_tmp(tmp);
} else if ((insn & 0x380) == 0) {
/* VDUP */
if (insn & (1 << 19)) {
NEON_SET_REG(T0, rm, 1);
} else {
NEON_SET_REG(T0, rm, 0);
}
if (insn & (1 << 16)) {
gen_neon_dup_u8(cpu_T[0], ((insn >> 17) & 3) * 8);
} else if (insn & (1 << 17)) {
if ((insn >> 18) & 1)
gen_neon_dup_high16(cpu_T[0]);
else
gen_neon_dup_low16(cpu_T[0]);
}
for (pass = 0; pass < (q ? 4 : 2); pass++) {
NEON_SET_REG(T0, rd, pass);
}
} else {
return 1;
}
}
}
return 0;
}
static int disas_cp14_read(CPUState * env, DisasContext *s, uint32_t insn)
{
int crn = (insn >> 16) & 0xf;
int crm = insn & 0xf;
int op1 = (insn >> 21) & 7;
int op2 = (insn >> 5) & 7;
int rt = (insn >> 12) & 0xf;
TCGv tmp;
if (arm_feature(env, ARM_FEATURE_THUMB2EE)) {
if (op1 == 6 && crn == 0 && crm == 0 && op2 == 0) {
/* TEECR */
if (IS_USER(s))
return 1;
tmp = load_cpu_field(teecr);
store_reg(s, rt, tmp);
return 0;
}
if (op1 == 6 && crn == 1 && crm == 0 && op2 == 0) {
/* TEEHBR */
if (IS_USER(s) && (env->teecr & 1))
return 1;
tmp = load_cpu_field(teehbr);
store_reg(s, rt, tmp);
return 0;
}
}
fprintf(stderr, "Unknown cp14 read op1:%d crn:%d crm:%d op2:%d\n",
op1, crn, crm, op2);
return 1;
}
static int disas_cp14_write(CPUState * env, DisasContext *s, uint32_t insn)
{
int crn = (insn >> 16) & 0xf;
int crm = insn & 0xf;
int op1 = (insn >> 21) & 7;
int op2 = (insn >> 5) & 7;
int rt = (insn >> 12) & 0xf;
TCGv tmp;
if (arm_feature(env, ARM_FEATURE_THUMB2EE)) {
if (op1 == 6 && crn == 0 && crm == 0 && op2 == 0) {
/* TEECR */
if (IS_USER(s))
return 1;
tmp = load_reg(s, rt);
gen_helper_set_teecr(cpu_env, tmp);
dead_tmp(tmp);
return 0;
}
if (op1 == 6 && crn == 1 && crm == 0 && op2 == 0) {
/* TEEHBR */
if (IS_USER(s) && (env->teecr & 1))
return 1;
tmp = load_reg(s, rt);
store_cpu_field(tmp, teehbr);
return 0;
}
}
fprintf(stderr, "Unknown cp14 write op1:%d crn:%d crm:%d op2:%d\n",
op1, crn, crm, op2);
return 1;
}
static int disas_coproc_insn(CPUState * env, DisasContext *s, uint32_t insn)
{
int cpnum;
cpnum = (insn >> 8) & 0xf;
if (arm_feature(env, ARM_FEATURE_XSCALE)
&& ((env->cp15.c15_cpar ^ 0x3fff) & (1 << cpnum)))
return 1;
switch (cpnum) {
case 0:
case 1:
if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
return disas_iwmmxt_insn(env, s, insn);
} else if (arm_feature(env, ARM_FEATURE_XSCALE)) {
return disas_dsp_insn(env, s, insn);
}
return 1;
case 10:
case 11:
return disas_vfp_insn (env, s, insn);
case 14:
/* Coprocessors 7-15 are architecturally reserved by ARM.
Unfortunately Intel decided to ignore this. */
if (arm_feature(env, ARM_FEATURE_XSCALE))
goto board;
if (insn & (1 << 20))
return disas_cp14_read(env, s, insn);
else
return disas_cp14_write(env, s, insn);
case 15:
return disas_cp15_insn (env, s, insn);
default:
board:
/* Unknown coprocessor. See if the board has hooked it. */
return disas_cp_insn (env, s, insn);
}
}
/* Store a 64-bit value to a register pair. Clobbers val. */
static void gen_storeq_reg(DisasContext *s, int rlow, int rhigh, TCGv_i64 val)
{
TCGv tmp;
tmp = new_tmp();
tcg_gen_trunc_i64_i32(tmp, val);
store_reg(s, rlow, tmp);
tmp = new_tmp();
tcg_gen_shri_i64(val, val, 32);
tcg_gen_trunc_i64_i32(tmp, val);
store_reg(s, rhigh, tmp);
}
/* load a 32-bit value from a register and perform a 64-bit accumulate. */
static void gen_addq_lo(DisasContext *s, TCGv_i64 val, int rlow)
{
TCGv_i64 tmp;
TCGv tmp2;
/* Load value and extend to 64 bits. */
tmp = tcg_temp_new_i64();
tmp2 = load_reg(s, rlow);
tcg_gen_extu_i32_i64(tmp, tmp2);
dead_tmp(tmp2);
tcg_gen_add_i64(val, val, tmp);
}
/* load and add a 64-bit value from a register pair. */
static void gen_addq(DisasContext *s, TCGv_i64 val, int rlow, int rhigh)
{
TCGv_i64 tmp;
TCGv tmpl;
TCGv tmph;
/* Load 64-bit value rd:rn. */
tmpl = load_reg(s, rlow);
tmph = load_reg(s, rhigh);
tmp = tcg_temp_new_i64();
tcg_gen_concat_i32_i64(tmp, tmpl, tmph);
dead_tmp(tmpl);
dead_tmp(tmph);
tcg_gen_add_i64(val, val, tmp);
}
/* Set N and Z flags from a 64-bit value. */
static void gen_logicq_cc(TCGv_i64 val)
{
TCGv tmp = new_tmp();
gen_helper_logicq_cc(tmp, val);
gen_logic_CC(tmp);
dead_tmp(tmp);
}
static void disas_arm_insn(CPUState * env, DisasContext *s)
{
unsigned int cond, insn, val, op1, i, shift, rm, rs, rn, rd, sh;
TCGv tmp;
TCGv tmp2;
TCGv tmp3;
TCGv addr;
TCGv_i64 tmp64;
insn = ldl_code(s->pc);
s->pc += 4;
/* M variants do not implement ARM mode. */
if (IS_M(env))
goto illegal_op;
cond = insn >> 28;
if (cond == 0xf){
/* Unconditional instructions. */
if (((insn >> 25) & 7) == 1) {
/* NEON Data processing. */
if (!arm_feature(env, ARM_FEATURE_NEON))
goto illegal_op;
if (disas_neon_data_insn(env, s, insn))
goto illegal_op;
return;
}
if ((insn & 0x0f100000) == 0x04000000) {
/* NEON load/store. */
if (!arm_feature(env, ARM_FEATURE_NEON))
goto illegal_op;
if (disas_neon_ls_insn(env, s, insn))
goto illegal_op;
return;
}
if ((insn & 0x0d70f000) == 0x0550f000)
return; /* PLD */
else if ((insn & 0x0ffffdff) == 0x01010000) {
ARCH(6);
/* setend */
if (insn & (1 << 9)) {
/* BE8 mode not implemented. */
goto illegal_op;
}
return;
} else if ((insn & 0x0fffff00) == 0x057ff000) {
switch ((insn >> 4) & 0xf) {
case 1: /* clrex */
ARCH(6K);
gen_helper_clrex(cpu_env);
return;
case 4: /* dsb */
case 5: /* dmb */
case 6: /* isb */
ARCH(7);
/* We don't emulate caches so these are a no-op. */
return;
default:
goto illegal_op;
}
} else if ((insn & 0x0e5fffe0) == 0x084d0500) {
/* srs */
uint32_t offset;
if (IS_USER(s))
goto illegal_op;
ARCH(6);
op1 = (insn & 0x1f);
if (op1 == (env->uncached_cpsr & CPSR_M)) {
addr = load_reg(s, 13);
} else {
addr = new_tmp();
gen_helper_get_r13_banked(addr, cpu_env, tcg_const_i32(op1));
}
i = (insn >> 23) & 3;
switch (i) {
case 0: offset = -4; break; /* DA */
case 1: offset = -8; break; /* DB */
case 2: offset = 0; break; /* IA */
case 3: offset = 4; break; /* IB */
default: abort();
}
if (offset)
tcg_gen_addi_i32(addr, addr, offset);
tmp = load_reg(s, 14);
gen_st32(tmp, addr, 0);
tmp = new_tmp();
gen_helper_cpsr_read(tmp);
tcg_gen_addi_i32(addr, addr, 4);
gen_st32(tmp, addr, 0);
if (insn & (1 << 21)) {
/* Base writeback. */
switch (i) {
case 0: offset = -8; break;
case 1: offset = -4; break;
case 2: offset = 4; break;
case 3: offset = 0; break;
default: abort();
}
if (offset)
tcg_gen_addi_i32(addr, tmp, offset);
if (op1 == (env->uncached_cpsr & CPSR_M)) {
gen_movl_reg_T1(s, 13);
} else {
gen_helper_set_r13_banked(cpu_env, tcg_const_i32(op1), cpu_T[1]);
}
} else {
dead_tmp(addr);
}
} else if ((insn & 0x0e5fffe0) == 0x081d0a00) {
/* rfe */
uint32_t offset;
if (IS_USER(s))
goto illegal_op;
ARCH(6);
rn = (insn >> 16) & 0xf;
addr = load_reg(s, rn);
i = (insn >> 23) & 3;
switch (i) {
case 0: offset = -4; break; /* DA */
case 1: offset = -8; break; /* DB */
case 2: offset = 0; break; /* IA */
case 3: offset = 4; break; /* IB */
default: abort();
}
if (offset)
tcg_gen_addi_i32(addr, addr, offset);
/* Load PC into tmp and CPSR into tmp2. */
tmp = gen_ld32(addr, 0);
tcg_gen_addi_i32(addr, addr, 4);
tmp2 = gen_ld32(addr, 0);
if (insn & (1 << 21)) {
/* Base writeback. */
switch (i) {
case 0: offset = -8; break;
case 1: offset = -4; break;
case 2: offset = 4; break;
case 3: offset = 0; break;
default: abort();
}
if (offset)
tcg_gen_addi_i32(addr, addr, offset);
store_reg(s, rn, addr);
} else {
dead_tmp(addr);
}
gen_rfe(s, tmp, tmp2);
} else if ((insn & 0x0e000000) == 0x0a000000) {
/* branch link and change to thumb (blx <offset>) */
int32_t offset;
val = (uint32_t)s->pc;
tmp = new_tmp();
tcg_gen_movi_i32(tmp, val);
store_reg(s, 14, tmp);
/* Sign-extend the 24-bit offset */
offset = (((int32_t)insn) << 8) >> 8;
/* offset * 4 + bit24 * 2 + (thumb bit) */
val += (offset << 2) | ((insn >> 23) & 2) | 1;
/* pipeline offset */
val += 4;
gen_bx_im(s, val);
return;
} else if ((insn & 0x0e000f00) == 0x0c000100) {
if (arm_feature(env, ARM_FEATURE_IWMMXT)) {
/* iWMMXt register transfer. */
if (env->cp15.c15_cpar & (1 << 1))
if (!disas_iwmmxt_insn(env, s, insn))
return;
}
} else if ((insn & 0x0fe00000) == 0x0c400000) {
/* Coprocessor double register transfer. */
} else if ((insn & 0x0f000010) == 0x0e000010) {
/* Additional coprocessor register transfer. */
} else if ((insn & 0x0ff10020) == 0x01000000) {
uint32_t mask;
uint32_t val;
/* cps (privileged) */
if (IS_USER(s))
return;
mask = val = 0;
if (insn & (1 << 19)) {
if (insn & (1 << 8))
mask |= CPSR_A;
if (insn & (1 << 7))
mask |= CPSR_I;
if (insn & (1 << 6))
mask |= CPSR_F;
if (insn & (1 << 18))
val |= mask;
}
if (insn & (1 << 17)) {
mask |= CPSR_M;
val |= (insn & 0x1f);
}
if (mask) {
gen_op_movl_T0_im(val);
gen_set_psr_T0(s, mask, 0);
}
return;
}
goto illegal_op;
}
if (cond != 0xe) {
/* if not always execute, we generate a conditional jump to
next instruction */
s->condlabel = gen_new_label();
gen_test_cc(cond ^ 1, s->condlabel);
s->condjmp = 1;
}
if ((insn & 0x0f900000) == 0x03000000) {
if ((insn & (1 << 21)) == 0) {
ARCH(6T2);
rd = (insn >> 12) & 0xf;
val = ((insn >> 4) & 0xf000) | (insn & 0xfff);
if ((insn & (1 << 22)) == 0) {
/* MOVW */
tmp = new_tmp();
tcg_gen_movi_i32(tmp, val);
} else {
/* MOVT */
tmp = load_reg(s, rd);
tcg_gen_ext16u_i32(tmp, tmp);
tcg_gen_ori_i32(tmp, tmp, val << 16);
}
store_reg(s, rd, tmp);
} else {
if (((insn >> 12) & 0xf) != 0xf)
goto illegal_op;
if (((insn >> 16) & 0xf) == 0) {
gen_nop_hint(s, insn & 0xff);
} else {
/* CPSR = immediate */
val = insn & 0xff;
shift = ((insn >> 8) & 0xf) * 2;
if (shift)
val = (val >> shift) | (val << (32 - shift));
gen_op_movl_T0_im(val);
i = ((insn & (1 << 22)) != 0);
if (gen_set_psr_T0(s, msr_mask(env, s, (insn >> 16) & 0xf, i), i))
goto illegal_op;
}
}
} else if ((insn & 0x0f900000) == 0x01000000
&& (insn & 0x00000090) != 0x00000090) {
/* miscellaneous instructions */
op1 = (insn >> 21) & 3;
sh = (insn >> 4) & 0xf;
rm = insn & 0xf;
switch (sh) {
case 0x0: /* move program status register */
if (op1 & 1) {
/* PSR = reg */
gen_movl_T0_reg(s, rm);
i = ((op1 & 2) != 0);
if (gen_set_psr_T0(s, msr_mask(env, s, (insn >> 16) & 0xf, i), i))
goto illegal_op;
} else {
/* reg = PSR */
rd = (insn >> 12) & 0xf;
if (op1 & 2) {
if (IS_USER(s))
goto illegal_op;
tmp = load_cpu_field(spsr);
} else {
tmp = new_tmp();
gen_helper_cpsr_read(tmp);
}
store_reg(s, rd, tmp);
}
break;
case 0x1:
if (op1 == 1) {
/* branch/exchange thumb (bx). */
tmp = load_reg(s, rm);
gen_bx(s, tmp);
} else if (op1 == 3) {
/* clz */
rd = (insn >> 12) & 0xf;
tmp = load_reg(s, rm);
gen_helper_clz(tmp, tmp);
store_reg(s, rd, tmp);
} else {
goto illegal_op;
}
break;
case 0x2:
if (op1 == 1) {
ARCH(5J); /* bxj */
/* Trivial implementation equivalent to bx. */
tmp = load_reg(s, rm);
gen_bx(s, tmp);
} else {
goto illegal_op;
}
break;
case 0x3:
if (op1 != 1)
goto illegal_op;
/* branch link/exchange thumb (blx) */
tmp = load_reg(s, rm);
tmp2 = new_tmp();
tcg_gen_movi_i32(tmp2, s->pc);
store_reg(s, 14, tmp2);
gen_bx(s, tmp);
break;
case 0x5: /* saturating add/subtract */
rd = (insn >> 12) & 0xf;
rn = (insn >> 16) & 0xf;
tmp = load_reg(s, rm);
tmp2 = load_reg(s, rn);
if (op1 & 2)
gen_helper_double_saturate(tmp2, tmp2);
if (op1 & 1)
gen_helper_sub_saturate(tmp, tmp, tmp2);
else
gen_helper_add_saturate(tmp, tmp, tmp2);
dead_tmp(tmp2);
store_reg(s, rd, tmp);
break;
case 7: /* bkpt */
gen_set_condexec(s);
gen_set_pc_im(s->pc - 4);
gen_exception(EXCP_BKPT);
s->is_jmp = DISAS_JUMP;
break;
case 0x8: /* signed multiply */
case 0xa:
case 0xc:
case 0xe:
rs = (insn >> 8) & 0xf;
rn = (insn >> 12) & 0xf;
rd = (insn >> 16) & 0xf;
if (op1 == 1) {
/* (32 * 16) >> 16 */
tmp = load_reg(s, rm);
tmp2 = load_reg(s, rs);
if (sh & 4)
tcg_gen_sari_i32(tmp2, tmp2, 16);
else
gen_sxth(tmp2);
tmp64 = gen_muls_i64_i32(tmp, tmp2);
tcg_gen_shri_i64(tmp64, tmp64, 16);
tmp = new_tmp();
tcg_gen_trunc_i64_i32(tmp, tmp64);
if ((sh & 2) == 0) {
tmp2 = load_reg(s, rn);
gen_helper_add_setq(tmp, tmp, tmp2);
dead_tmp(tmp2);
}
store_reg(s, rd, tmp);
} else {
/* 16 * 16 */
tmp = load_reg(s, rm);
tmp2 = load_reg(s, rs);
gen_mulxy(tmp, tmp2, sh & 2, sh & 4);
dead_tmp(tmp2);
if (op1 == 2) {
tmp64 = tcg_temp_new_i64();
tcg_gen_ext_i32_i64(tmp64, tmp);
dead_tmp(tmp);
gen_addq(s, tmp64, rn, rd);
gen_storeq_reg(s, rn, rd, tmp64);
} else {
if (op1 == 0) {
tmp2 = load_reg(s, rn);
gen_helper_add_setq(tmp, tmp, tmp2);
dead_tmp(tmp2);
}
store_reg(s, rd, tmp);
}
}
break;
default:
goto illegal_op;
}
} else if (((insn & 0x0e000000) == 0 &&
(insn & 0x00000090) != 0x90) ||
((insn & 0x0e000000) == (1 << 25))) {
int set_cc, logic_cc, shiftop;
op1 = (insn >> 21) & 0xf;
set_cc = (insn >> 20) & 1;
logic_cc = table_logic_cc[op1] & set_cc;
/* data processing instruction */
if (insn & (1 << 25)) {
/* immediate operand */
val = insn & 0xff;
shift = ((insn >> 8) & 0xf) * 2;
if (shift) {
val = (val >> shift) | (val << (32 - shift));
}
tmp2 = new_tmp();
tcg_gen_movi_i32(tmp2, val);
if (logic_cc && shift) {
gen_set_CF_bit31(tmp2);
}
} else {
/* register */
rm = (insn) & 0xf;
tmp2 = load_reg(s, rm);
shiftop = (insn >> 5) & 3;
if (!(insn & (1 << 4))) {
shift = (insn >> 7) & 0x1f;
gen_arm_shift_im(tmp2, shiftop, shift, logic_cc);
} else {
rs = (insn >> 8) & 0xf;
tmp = load_reg(s, rs);
gen_arm_shift_reg(tmp2, shiftop, tmp, logic_cc);
}
}
if (op1 != 0x0f && op1 != 0x0d) {
rn = (insn >> 16) & 0xf;
tmp = load_reg(s, rn);
} else {
TCGV_UNUSED(tmp);
}
rd = (insn >> 12) & 0xf;
switch(op1) {
case 0x00:
tcg_gen_and_i32(tmp, tmp, tmp2);
if (logic_cc) {
gen_logic_CC(tmp);
}
store_reg_bx(env, s, rd, tmp);
break;
case 0x01:
tcg_gen_xor_i32(tmp, tmp, tmp2);
if (logic_cc) {
gen_logic_CC(tmp);
}
store_reg_bx(env, s, rd, tmp);
break;
case 0x02:
if (set_cc && rd == 15) {
/* SUBS r15, ... is used for exception return. */
if (IS_USER(s)) {
goto illegal_op;
}
gen_helper_sub_cc(tmp, tmp, tmp2);
gen_exception_return(s, tmp);
} else {
if (set_cc) {
gen_helper_sub_cc(tmp, tmp, tmp2);
} else {
tcg_gen_sub_i32(tmp, tmp, tmp2);
}
store_reg_bx(env, s, rd, tmp);
}
break;
case 0x03:
if (set_cc) {
gen_helper_sub_cc(tmp, tmp2, tmp);
} else {
tcg_gen_sub_i32(tmp, tmp2, tmp);
}
store_reg_bx(env, s, rd, tmp);
break;
case 0x04:
if (set_cc) {
gen_helper_add_cc(tmp, tmp, tmp2);
} else {
tcg_gen_add_i32(tmp, tmp, tmp2);
}
store_reg_bx(env, s, rd, tmp);
break;
case 0x05:
if (set_cc) {
gen_helper_adc_cc(tmp, tmp, tmp2);
} else {
gen_add_carry(tmp, tmp, tmp2);
}
store_reg_bx(env, s, rd, tmp);
break;
case 0x06:
if (set_cc) {
gen_helper_sbc_cc(tmp, tmp, tmp2);
} else {
gen_sub_carry(tmp, tmp, tmp2);
}
store_reg_bx(env, s, rd, tmp);
break;
case 0x07:
if (set_cc) {
gen_helper_sbc_cc(tmp, tmp2, tmp);
} else {
gen_sub_carry(tmp, tmp2, tmp);
}
store_reg_bx(env, s, rd, tmp);
break;
case 0x08:
if (set_cc) {
tcg_gen_and_i32(tmp, tmp, tmp2);
gen_logic_CC(tmp);
}
dead_tmp(tmp);
break;
case 0x09:
if (set_cc) {
tcg_gen_xor_i32(tmp, tmp, tmp2);
gen_logic_CC(tmp);
}
dead_tmp(tmp);
break;
case 0x0a:
if (set_cc) {
gen_helper_sub_cc(tmp, tmp, tmp2);
}
dead_tmp(tmp);
break;
case 0x0b:
if (set_cc) {
gen_helper_add_cc(tmp, tmp, tmp2);
}
dead_tmp(tmp);
break;
case 0x0c:
tcg_gen_or_i32(tmp, tmp, tmp2);
if (logic_cc) {
gen_logic_CC(tmp);
}
store_reg_bx(env, s, rd, tmp);
break;
case 0x0d:
if (logic_cc && rd == 15) {
/* MOVS r15, ... is used for exception return. */
if (IS_USER(s)) {
goto illegal_op;
}
gen_exception_return(s, tmp2);
} else {
if (logic_cc) {
gen_logic_CC(tmp2);
}
store_reg_bx(env, s, rd, tmp2);
}
break;
case 0x0e:
tcg_gen_bic_i32(tmp, tmp, tmp2);
if (logic_cc) {
gen_logic_CC(tmp);
}
store_reg_bx(env, s, rd, tmp);
break;
default:
case 0x0f:
tcg_gen_not_i32(tmp2, tmp2);
if (logic_cc) {
gen_logic_CC(tmp2);
}
store_reg_bx(env, s, rd, tmp2);
break;
}
if (op1 != 0x0f && op1 != 0x0d) {
dead_tmp(tmp2);
}
} else {
/* other instructions */
op1 = (insn >> 24) & 0xf;
switch(op1) {
case 0x0:
case 0x1:
/* multiplies, extra load/stores */
sh = (insn >> 5) & 3;
if (sh == 0) {
if (op1 == 0x0) {
rd = (insn >> 16) & 0xf;
rn = (insn >> 12) & 0xf;
rs = (insn >> 8) & 0xf;
rm = (insn) & 0xf;
op1 = (insn >> 20) & 0xf;
switch (op1) {
case 0: case 1: case 2: case 3: case 6:
/* 32 bit mul */
tmp = load_reg(s, rs);
tmp2 = load_reg(s, rm);
tcg_gen_mul_i32(tmp, tmp, tmp2);
dead_tmp(tmp2);
if (insn & (1 << 22)) {
/* Subtract (mls) */
ARCH(6T2);
tmp2 = load_reg(s, rn);
tcg_gen_sub_i32(tmp, tmp2, tmp);
dead_tmp(tmp2);
} else if (insn & (1 << 21)) {
/* Add */
tmp2 = load_reg(s, rn);
tcg_gen_add_i32(tmp, tmp, tmp2);
dead_tmp(tmp2);
}
if (insn & (1 << 20))
gen_logic_CC(tmp);
store_reg(s, rd, tmp);
break;
default:
/* 64 bit mul */
tmp = load_reg(s, rs);
tmp2 = load_reg(s, rm);
if (insn & (1 << 22))
tmp64 = gen_muls_i64_i32(tmp, tmp2);
else
tmp64 = gen_mulu_i64_i32(tmp, tmp2);
if (insn & (1 << 21)) /* mult accumulate */
gen_addq(s, tmp64, rn, rd);
if (!(insn & (1 << 23))) { /* double accumulate */
ARCH(6);
gen_addq_lo(s, tmp64, rn);
gen_addq_lo(s, tmp64, rd);
}
if (insn & (1 << 20))
gen_logicq_cc(tmp64);
gen_storeq_reg(s, rn, rd, tmp64);
break;
}
} else {
rn = (insn >> 16) & 0xf;
rd = (insn >> 12) & 0xf;
if (insn & (1 << 23)) {
/* load/store exclusive */
op1 = (insn >> 21) & 0x3;
if (op1)
ARCH(6K);
else
ARCH(6);
gen_movl_T1_reg(s, rn);
addr = cpu_T[1];
if (insn & (1 << 20)) {
gen_helper_mark_exclusive(cpu_env, cpu_T[1]);
switch (op1) {
case 0: /* ldrex */
tmp = gen_ld32(addr, IS_USER(s));
break;
case 1: /* ldrexd */
tmp = gen_ld32(addr, IS_USER(s));
store_reg(s, rd, tmp);
tcg_gen_addi_i32(addr, addr, 4);
tmp = gen_ld32(addr, IS_USER(s));
rd++;
break;
case 2: /* ldrexb */
tmp = gen_ld8u(addr, IS_USER(s));
break;
case 3: /* ldrexh */
tmp = gen_ld16u(addr, IS_USER(s));
break;
default:
abort();
}
store_reg(s, rd, tmp);
} else {
int label = gen_new_label();
rm = insn & 0xf;
gen_helper_test_exclusive(cpu_T[0], cpu_env, addr);
tcg_gen_brcondi_i32(TCG_COND_NE, cpu_T[0],
0, label);
tmp = load_reg(s,rm);
switch (op1) {
case 0: /* strex */
gen_st32(tmp, addr, IS_USER(s));
break;
case 1: /* strexd */
gen_st32(tmp, addr, IS_USER(s));
tcg_gen_addi_i32(addr, addr, 4);
tmp = load_reg(s, rm + 1);
gen_st32(tmp, addr, IS_USER(s));
break;
case 2: /* strexb */
gen_st8(tmp, addr, IS_USER(s));
break;
case 3: /* strexh */
gen_st16(tmp, addr, IS_USER(s));
break;
default:
abort();
}
gen_set_label(label);
gen_movl_reg_T0(s, rd);
}
} else {
/* SWP instruction */
rm = (insn) & 0xf;
/* ??? This is not really atomic. However we know
we never have multiple CPUs running in parallel,
so it is good enough. */
addr = load_reg(s, rn);
tmp = load_reg(s, rm);
if (insn & (1 << 22)) {
tmp2 = gen_ld8u(addr, IS_USER(s));
gen_st8(tmp, addr, IS_USER(s));
} else {
tmp2 = gen_ld32(addr, IS_USER(s));
gen_st32(tmp, addr, IS_USER(s));
}
dead_tmp(addr);
store_reg(s, rd, tmp2);
}
}
} else {
int address_offset;
int load;
/* Misc load/store */
rn = (insn >> 16) & 0xf;
rd = (insn >> 12) & 0xf;
addr = load_reg(s, rn);
if (insn & (1 << 24))
gen_add_datah_offset(s, insn, 0, addr);
address_offset = 0;
if (insn & (1 << 20)) {
/* load */
switch(sh) {
case 1:
tmp = gen_ld16u(addr, IS_USER(s));
break;
case 2:
tmp = gen_ld8s(addr, IS_USER(s));
break;
default:
case 3:
tmp = gen_ld16s(addr, IS_USER(s));
break;
}
load = 1;
} else if (sh & 2) {
/* doubleword */
if (sh & 1) {
/* store */
tmp = load_reg(s, rd);
gen_st32(tmp, addr, IS_USER(s));
tcg_gen_addi_i32(addr, addr, 4);
tmp = load_reg(s, rd + 1);
gen_st32(tmp, addr, IS_USER(s));
load = 0;
} else {
/* load */
tmp = gen_ld32(addr, IS_USER(s));
store_reg(s, rd, tmp);
tcg_gen_addi_i32(addr, addr, 4);
tmp = gen_ld32(addr, IS_USER(s));
rd++;
load = 1;
}
address_offset = -4;
} else {
/* store */
tmp = load_reg(s, rd);
gen_st16(tmp, addr, IS_USER(s));
load = 0;
}
/* Perform base writeback before the loaded value to
ensure correct behavior with overlapping index registers.
ldrd with base writeback is is undefined if the
destination and index registers overlap. */
if (!(insn & (1 << 24))) {
gen_add_datah_offset(s, insn, address_offset, addr);
store_reg(s, rn, addr);
} else if (insn & (1 << 21)) {
if (address_offset)
tcg_gen_addi_i32(addr, addr, address_offset);
store_reg(s, rn, addr);
} else {
dead_tmp(addr);
}
if (load) {
/* Complete the load. */
store_reg(s, rd, tmp);
}
}
break;
case 0x4:
case 0x5:
goto do_ldst;
case 0x6:
case 0x7:
if (insn & (1 << 4)) {
ARCH(6);
/* Armv6 Media instructions. */
rm = insn & 0xf;
rn = (insn >> 16) & 0xf;
rd = (insn >> 12) & 0xf;
rs = (insn >> 8) & 0xf;
switch ((insn >> 23) & 3) {
case 0: /* Parallel add/subtract. */
op1 = (insn >> 20) & 7;
tmp = load_reg(s, rn);
tmp2 = load_reg(s, rm);
sh = (insn >> 5) & 7;
if ((op1 & 3) == 0 || sh == 5 || sh == 6)
goto illegal_op;
gen_arm_parallel_addsub(op1, sh, tmp, tmp2);
dead_tmp(tmp2);
store_reg(s, rd, tmp);
break;
case 1:
if ((insn & 0x00700020) == 0) {
/* Halfword pack. */
tmp = load_reg(s, rn);
tmp2 = load_reg(s, rm);
shift = (insn >> 7) & 0x1f;
if (insn & (1 << 6)) {
/* pkhtb */
if (shift == 0)
shift = 31;
tcg_gen_sari_i32(tmp2, tmp2, shift);
tcg_gen_andi_i32(tmp, tmp, 0xffff0000);
tcg_gen_ext16u_i32(tmp2, tmp2);
} else {
/* pkhbt */
if (shift)
tcg_gen_shli_i32(tmp2, tmp2, shift);
tcg_gen_ext16u_i32(tmp, tmp);
tcg_gen_andi_i32(tmp2, tmp2, 0xffff0000);
}
tcg_gen_or_i32(tmp, tmp, tmp2);
dead_tmp(tmp2);
store_reg(s, rd, tmp);
} else if ((insn & 0x00200020) == 0x00200000) {
/* [us]sat */
tmp = load_reg(s, rm);
shift = (insn >> 7) & 0x1f;
if (insn & (1 << 6)) {
if (shift == 0)
shift = 31;
tcg_gen_sari_i32(tmp, tmp, shift);
} else {
tcg_gen_shli_i32(tmp, tmp, shift);
}
sh = (insn >> 16) & 0x1f;
if (sh != 0) {
if (insn & (1 << 22))
gen_helper_usat(tmp, tmp, tcg_const_i32(sh));
else
gen_helper_ssat(tmp, tmp, tcg_const_i32(sh));
}
store_reg(s, rd, tmp);
} else if ((insn & 0x00300fe0) == 0x00200f20) {
/* [us]sat16 */
tmp = load_reg(s, rm);
sh = (insn >> 16) & 0x1f;
if (sh != 0) {
if (insn & (1 << 22))
gen_helper_usat16(tmp, tmp, tcg_const_i32(sh));
else
gen_helper_ssat16(tmp, tmp, tcg_const_i32(sh));
}
store_reg(s, rd, tmp);
} else if ((insn & 0x00700fe0) == 0x00000fa0) {
/* Select bytes. */
tmp = load_reg(s, rn);
tmp2 = load_reg(s, rm);
tmp3 = new_tmp();
tcg_gen_ld_i32(tmp3, cpu_env, offsetof(CPUState, GE));
gen_helper_sel_flags(tmp, tmp3, tmp, tmp2);
dead_tmp(tmp3);
dead_tmp(tmp2);
store_reg(s, rd, tmp);
} else if ((insn & 0x000003e0) == 0x00000060) {
tmp = load_reg(s, rm);
shift = (insn >> 10) & 3;
/* ??? In many cases it's not neccessary to do a
rotate, a shift is sufficient. */
if (shift != 0)
tcg_gen_rori_i32(tmp, tmp, shift * 8);
op1 = (insn >> 20) & 7;
switch (op1) {
case 0: gen_sxtb16(tmp); break;
case 2: gen_sxtb(tmp); break;
case 3: gen_sxth(tmp); break;
case 4: gen_uxtb16(tmp); break;
case 6: gen_uxtb(tmp); break;
case 7: gen_uxth(tmp); break;
default: goto illegal_op;
}
if (rn != 15) {
tmp2 = load_reg(s, rn);
if ((op1 & 3) == 0) {
gen_add16(tmp, tmp2);
} else {
tcg_gen_add_i32(tmp, tmp, tmp2);
dead_tmp(tmp2);
}
}
store_reg(s, rd, tmp);
} else if ((insn & 0x003f0f60) == 0x003f0f20) {
/* rev */
tmp = load_reg(s, rm);
if (insn & (1 << 22)) {
if (insn & (1 << 7)) {
gen_revsh(tmp);
} else {
ARCH(6T2);
gen_helper_rbit(tmp, tmp);
}
} else {
if (insn & (1 << 7))
gen_rev16(tmp);
else
tcg_gen_bswap32_i32(tmp, tmp);
}
store_reg(s, rd, tmp);
} else {
goto illegal_op;
}
break;
case 2: /* Multiplies (Type 3). */
tmp = load_reg(s, rm);
tmp2 = load_reg(s, rs);
if (insn & (1 << 20)) {
/* Signed multiply most significant [accumulate]. */
tmp64 = gen_muls_i64_i32(tmp, tmp2);
if (insn & (1 << 5))
tcg_gen_addi_i64(tmp64, tmp64, 0x80000000u);
tcg_gen_shri_i64(tmp64, tmp64, 32);
tmp = new_tmp();
tcg_gen_trunc_i64_i32(tmp, tmp64);
if (rd != 15) {
tmp2 = load_reg(s, rd);
if (insn & (1 << 6)) {
tcg_gen_sub_i32(tmp, tmp, tmp2);
} else {
tcg_gen_add_i32(tmp, tmp, tmp2);
}
dead_tmp(tmp2);
}
store_reg(s, rn, tmp);
} else {
if (insn & (1 << 5))
gen_swap_half(tmp2);
gen_smul_dual(tmp, tmp2);
/* This addition cannot overflow. */
if (insn & (1 << 6)) {
tcg_gen_sub_i32(tmp, tmp, tmp2);
} else {
tcg_gen_add_i32(tmp, tmp, tmp2);
}
dead_tmp(tmp2);
if (insn & (1 << 22)) {
/* smlald, smlsld */
tmp64 = tcg_temp_new_i64();
tcg_gen_ext_i32_i64(tmp64, tmp);
dead_tmp(tmp);
gen_addq(s, tmp64, rd, rn);
gen_storeq_reg(s, rd, rn, tmp64);
} else {
/* smuad, smusd, smlad, smlsd */
if (rd != 15)
{
tmp2 = load_reg(s, rd);
gen_helper_add_setq(tmp, tmp, tmp2);
dead_tmp(tmp2);
}
store_reg(s, rn, tmp);
}
}
break;
case 3:
op1 = ((insn >> 17) & 0x38) | ((insn >> 5) & 7);
switch (op1) {
case 0: /* Unsigned sum of absolute differences. */
ARCH(6);
tmp = load_reg(s, rm);
tmp2 = load_reg(s, rs);
gen_helper_usad8(tmp, tmp, tmp2);
dead_tmp(tmp2);
if (rd != 15) {
tmp2 = load_reg(s, rd);
tcg_gen_add_i32(tmp, tmp, tmp2);
dead_tmp(tmp2);
}
store_reg(s, rn, tmp);
break;
case 0x20: case 0x24: case 0x28: case 0x2c:
/* Bitfield insert/clear. */
ARCH(6T2);
shift = (insn >> 7) & 0x1f;
i = (insn >> 16) & 0x1f;
i = i + 1 - shift;
if (rm == 15) {
tmp = new_tmp();
tcg_gen_movi_i32(tmp, 0);
} else {
tmp = load_reg(s, rm);
}
if (i != 32) {
tmp2 = load_reg(s, rd);
gen_bfi(tmp, tmp2, tmp, shift, (1u << i) - 1);
dead_tmp(tmp2);
}
store_reg(s, rd, tmp);
break;
case 0x12: case 0x16: case 0x1a: case 0x1e: /* sbfx */
case 0x32: case 0x36: case 0x3a: case 0x3e: /* ubfx */
ARCH(6T2);
tmp = load_reg(s, rm);
shift = (insn >> 7) & 0x1f;
i = ((insn >> 16) & 0x1f) + 1;
if (shift + i > 32)
goto illegal_op;
if (i < 32) {
if (op1 & 0x20) {
gen_ubfx(tmp, shift, (1u << i) - 1);
} else {
gen_sbfx(tmp, shift, i);
}
}
store_reg(s, rd, tmp);
break;
default:
goto illegal_op;
}
break;
}
break;
}
do_ldst:
/* Check for undefined extension instructions
* per the ARM Bible IE:
* xxxx 0111 1111 xxxx xxxx xxxx 1111 xxxx
*/
sh = (0xf << 20) | (0xf << 4);
if (op1 == 0x7 && ((insn & sh) == sh))
{
goto illegal_op;
}
/* load/store byte/word */
rn = (insn >> 16) & 0xf;
rd = (insn >> 12) & 0xf;
tmp2 = load_reg(s, rn);
i = (IS_USER(s) || (insn & 0x01200000) == 0x00200000);
if (insn & (1 << 24))
gen_add_data_offset(s, insn, tmp2);
if (insn & (1 << 20)) {
/* load */
if (insn & (1 << 22)) {
tmp = gen_ld8u(tmp2, i);
} else {
tmp = gen_ld32(tmp2, i);
}
} else {
/* store */
tmp = load_reg(s, rd);
if (insn & (1 << 22))
gen_st8(tmp, tmp2, i);
else
gen_st32(tmp, tmp2, i);
}
if (!(insn & (1 << 24))) {
gen_add_data_offset(s, insn, tmp2);
store_reg(s, rn, tmp2);
} else if (insn & (1 << 21)) {
store_reg(s, rn, tmp2);
} else {
dead_tmp(tmp2);
}
if (insn & (1 << 20)) {
/* Complete the load. */
if (rd == 15)
gen_bx(s, tmp);
else
store_reg(s, rd, tmp);
}
break;
case 0x08:
case 0x09:
{
int j, n, user, loaded_base;
TCGv loaded_var;
/* load/store multiple words */
/* XXX: store correct base if write back */
user = 0;
if (insn & (1 << 22)) {
if (IS_USER(s))
goto illegal_op; /* only usable in supervisor mode */
if ((insn & (1 << 15)) == 0)
user = 1;
}
rn = (insn >> 16) & 0xf;
addr = load_reg(s, rn);
/* compute total size */
loaded_base = 0;
TCGV_UNUSED(loaded_var);
n = 0;
for(i=0;i<16;i++) {
if (insn & (1 << i))
n++;
}
/* XXX: test invalid n == 0 case ? */
if (insn & (1 << 23)) {
if (insn & (1 << 24)) {
/* pre increment */
tcg_gen_addi_i32(addr, addr, 4);
} else {
/* post increment */
}
} else {
if (insn & (1 << 24)) {
/* 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));
}
}
j = 0;
for(i=0;i<16;i++) {
if (insn & (1 << i)) {
if (insn & (1 << 20)) {
/* load */
tmp = gen_ld32(addr, IS_USER(s));
if (i == 15) {
gen_bx(s, tmp);
} else if (user) {
gen_helper_set_user_reg(tcg_const_i32(i), tmp);
dead_tmp(tmp);
} else if (i == rn) {
loaded_var = tmp;
loaded_base = 1;
} else {
store_reg(s, i, tmp);
}
} else {
/* store */
if (i == 15) {
/* special case: r15 = PC + 8 */
val = (long)s->pc + 4;
tmp = new_tmp();
tcg_gen_movi_i32(tmp, val);
} else if (user) {
tmp = new_tmp();
gen_helper_get_user_reg(tmp, tcg_const_i32(i));
} else {
tmp = load_reg(s, i);
}
gen_st32(tmp, addr, IS_USER(s));
}
j++;
/* no need to add after the last transfer */
if (j != n)
tcg_gen_addi_i32(addr, addr, 4);
}
}
if (insn & (1 << 21)) {
/* write back */
if (insn & (1 << 23)) {
if (insn & (1 << 24)) {
/* pre increment */
} else {
/* post increment */
tcg_gen_addi_i32(addr, addr, 4);
}
} else {
if (insn & (1 << 24)) {
/* 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, rn, addr);
} else {
dead_tmp(addr);
}
if (loaded_base) {
store_reg(s, rn, loaded_var);
}
if ((insn & (1 << 22)) && !user) {
/* Restore CPSR from SPSR. */
tmp = load_cpu_field(spsr);
gen_set_cpsr(tmp, 0xffffffff);
dead_tmp(tmp);
s->is_jmp = DISAS_UPDATE;
}
}
break;
case 0xa:
case 0xb:
{
int32_t offset;
/* branch (and link) */
val = (int32_t)s->pc;
if (insn & (1 << 24)) {
tmp = new_tmp();
tcg_gen_movi_i32(tmp, val);
store_reg(s, 14, tmp);
}
offset = (((int32_t)insn << 8) >> 8);
val += (offset << 2) + 4;
gen_jmp(s, val);
}
break;
case 0xc:
case 0xd:
case 0xe:
/* Coprocessor. */
if (disas_coproc_insn(env, s, insn))
goto illegal_op;
break;
case 0xf:
/* swi */
gen_set_pc_im(s->pc);
s->is_jmp = DISAS_SWI;
break;
default:
illegal_op:
gen_set_condexec(s);
gen_set_pc_im(s->pc - 4);
gen_exception(EXCP_UDEF);
s->is_jmp = DISAS_JUMP;
break;
}
}
}
/* Return true if this is a Thumb-2 logical op. */
static int
thumb2_logic_op(int op)
{
return (op < 8);
}
/* Generate code for a Thumb-2 data processing operation. If CONDS is nonzero
then set condition code flags based on the result of the operation.
If SHIFTER_OUT is nonzero then set the carry flag for logical operations
to the high bit of T1.
Returns zero if the opcode is valid. */
static int
gen_thumb2_data_op(DisasContext *s, int op, int conds, uint32_t shifter_out)
{
int logic_cc;
logic_cc = 0;
switch (op) {
case 0: /* and */
gen_op_andl_T0_T1();
logic_cc = conds;
break;
case 1: /* bic */
gen_op_bicl_T0_T1();
logic_cc = conds;
break;
case 2: /* orr */
gen_op_orl_T0_T1();
logic_cc = conds;
break;
case 3: /* orn */
gen_op_notl_T1();
gen_op_orl_T0_T1();
logic_cc = conds;
break;
case 4: /* eor */
gen_op_xorl_T0_T1();
logic_cc = conds;
break;
case 8: /* add */
if (conds)
gen_op_addl_T0_T1_cc();
else
gen_op_addl_T0_T1();
break;
case 10: /* adc */
if (conds)
gen_op_adcl_T0_T1_cc();
else
gen_adc_T0_T1();
break;
case 11: /* sbc */
if (conds)
gen_op_sbcl_T0_T1_cc();
else
gen_sbc_T0_T1();
break;
case 13: /* sub */
if (conds)
gen_op_subl_T0_T1_cc();
else
gen_op_subl_T0_T1();
break;
case 14: /* rsb */
if (conds)
gen_op_rsbl_T0_T1_cc();
else
gen_op_rsbl_T0_T1();
break;
default: /* 5, 6, 7, 9, 12, 15. */
return 1;
}
if (logic_cc) {
gen_op_logic_T0_cc();
if (shifter_out)
gen_set_CF_bit31(cpu_T[1]);
}
return 0;
}
/* Translate a 32-bit thumb instruction. Returns nonzero if the instruction
is not legal. */
static int disas_thumb2_insn(CPUState *env, DisasContext *s, uint16_t insn_hw1)
{
uint32_t insn, imm, shift, offset;
uint32_t rd, rn, rm, rs;
TCGv tmp;
TCGv tmp2;
TCGv tmp3;
TCGv addr;
TCGv_i64 tmp64;
int op;
int shiftop;
int conds;
int logic_cc;
if (!(arm_feature(env, ARM_FEATURE_THUMB2)
|| arm_feature (env, ARM_FEATURE_M))) {
/* Thumb-1 cores may need to treat bl and blx as a pair of
16-bit instructions to get correct prefetch abort behavior. */
insn = insn_hw1;
if ((insn & (1 << 12)) == 0) {
/* Second half of blx. */
offset = ((insn & 0x7ff) << 1);
tmp = load_reg(s, 14);
tcg_gen_addi_i32(tmp, tmp, offset);
tcg_gen_andi_i32(tmp, tmp, 0xfffffffc);
tmp2 = new_tmp();
tcg_gen_movi_i32(tmp2, s->pc | 1);
store_reg(s, 14, tmp2);
gen_bx(s, tmp);
return 0;
}
if (insn & (1 << 11)) {
/* Second half of bl. */
offset = ((insn & 0x7ff) << 1) | 1;
tmp = load_reg(s, 14);
tcg_gen_addi_i32(tmp, tmp, offset);
tmp2 = new_tmp();
tcg_gen_movi_i32(tmp2, s->pc | 1);
store_reg(s, 14, tmp2);
gen_bx(s, tmp);
return 0;
}
if ((s->pc & ~TARGET_PAGE_MASK) == 0) {
/* Instruction spans a page boundary. Implement it as two
16-bit instructions in case the second half causes an
prefetch abort. */
offset = ((int32_t)insn << 21) >> 9;
gen_op_movl_T0_im(s->pc + 2 + offset);
gen_movl_reg_T0(s, 14);
return 0;
}
/* Fall through to 32-bit decode. */
}
insn = lduw_code(s->pc);
s->pc += 2;
insn |= (uint32_t)insn_hw1 << 16;
if ((insn & 0xf800e800) != 0xf000e800) {
ARCH(6T2);
}
rn = (insn >> 16) & 0xf;
rs = (insn >> 12) & 0xf;
rd = (insn >> 8) & 0xf;
rm = insn & 0xf;
switch ((insn >> 25) & 0xf) {
case 0: case 1: case 2: case 3:
/* 16-bit instructions. Should never happen. */
abort();
case 4:
if (insn & (1 << 22)) {
/* Other load/store, table branch. */
if (insn & 0x01200000) {
/* Load/store doubleword. */
if (rn == 15) {
addr = new_tmp();
tcg_gen_movi_i32(addr, s->pc & ~3);
} else {
addr = load_reg(s, rn);
}
offset = (insn & 0xff) * 4;
if ((insn & (1 << 23)) == 0)
offset = -offset;
if (insn & (1 << 24)) {
tcg_gen_addi_i32(addr, addr, offset);
offset = 0;
}
if (insn & (1 << 20)) {
/* ldrd */
tmp = gen_ld32(addr, IS_USER(s));
store_reg(s, rs, tmp);
tcg_gen_addi_i32(addr, addr, 4);
tmp = gen_ld32(addr, IS_USER(s));
store_reg(s, rd, tmp);
} else {
/* strd */
tmp = load_reg(s, rs);
gen_st32(tmp, addr, IS_USER(s));
tcg_gen_addi_i32(addr, addr, 4);
tmp = load_reg(s, rd);
gen_st32(tmp, addr, IS_USER(s));
}
if (insn & (1 << 21)) {
/* Base writeback. */
if (rn == 15)
goto illegal_op;
tcg_gen_addi_i32(addr, addr, offset - 4);
store_reg(s, rn, addr);
} else {
dead_tmp(addr);
}
} else if ((insn & (1 << 23)) == 0) {
/* Load/store exclusive word. */
gen_movl_T1_reg(s, rn);
addr = cpu_T[1];
if (insn & (1 << 20)) {
gen_helper_mark_exclusive(cpu_env, cpu_T[1]);
tmp = gen_ld32(addr, IS_USER(s));
store_reg(s, rd, tmp);
} else {
int label = gen_new_label();
gen_helper_test_exclusive(cpu_T[0], cpu_env, addr);
tcg_gen_brcondi_i32(TCG_COND_NE, cpu_T[0],
0, label);
tmp = load_reg(s, rs);
gen_st32(tmp, cpu_T[1], IS_USER(s));
gen_set_label(label);
gen_movl_reg_T0(s, rd);
}
} else if ((insn & (1 << 6)) == 0) {
/* Table Branch. */
if (rn == 15) {
addr = new_tmp();
tcg_gen_movi_i32(addr, s->pc);
} else {
addr = load_reg(s, rn);
}
tmp = load_reg(s, rm);
tcg_gen_add_i32(addr, addr, tmp);
if (insn & (1 << 4)) {
/* tbh */
tcg_gen_add_i32(addr, addr, tmp);
dead_tmp(tmp);
tmp = gen_ld16u(addr, IS_USER(s));
} else { /* tbb */
dead_tmp(tmp);
tmp = gen_ld8u(addr, IS_USER(s));
}
dead_tmp(addr);
tcg_gen_shli_i32(tmp, tmp, 1);
tcg_gen_addi_i32(tmp, tmp, s->pc);
store_reg(s, 15, tmp);
} else {
/* Load/store exclusive byte/halfword/doubleword. */
/* ??? These are not really atomic. However we know
we never have multiple CPUs running in parallel,
so it is good enough. */
op = (insn >> 4) & 0x3;
/* Must use a global reg for the address because we have
a conditional branch in the store instruction. */
gen_movl_T1_reg(s, rn);
addr = cpu_T[1];
if (insn & (1 << 20)) {
gen_helper_mark_exclusive(cpu_env, addr);
switch (op) {
case 0:
tmp = gen_ld8u(addr, IS_USER(s));
break;
case 1:
tmp = gen_ld16u(addr, IS_USER(s));
break;
case 3:
tmp = gen_ld32(addr, IS_USER(s));
tcg_gen_addi_i32(addr, addr, 4);
tmp2 = gen_ld32(addr, IS_USER(s));
store_reg(s, rd, tmp2);
break;
default:
goto illegal_op;
}
store_reg(s, rs, tmp);
} else {
int label = gen_new_label();
/* Must use a global that is not killed by the branch. */
gen_helper_test_exclusive(cpu_T[0], cpu_env, addr);
tcg_gen_brcondi_i32(TCG_COND_NE, cpu_T[0], 0, label);
tmp = load_reg(s, rs);
switch (op) {
case 0:
gen_st8(tmp, addr, IS_USER(s));
break;
case 1:
gen_st16(tmp, addr, IS_USER(s));
break;
case 3:
gen_st32(tmp, addr, IS_USER(s));
tcg_gen_addi_i32(addr, addr, 4);
tmp = load_reg(s, rd);
gen_st32(tmp, addr, IS_USER(s));
break;
default:
goto illegal_op;
}
gen_set_label(label);
gen_movl_reg_T0(s, rm);
}
}
} else {
/* Load/store multiple, RFE, SRS. */
if (((insn >> 23) & 1) == ((insn >> 24) & 1)) {
/* Not available in user mode. */
if (IS_USER(s))
goto illegal_op;
if (insn & (1 << 20)) {
/* rfe */
addr = load_reg(s, rn);
if ((insn & (1 << 24)) == 0)
tcg_gen_addi_i32(addr, addr, -8);
/* Load PC into tmp and CPSR into tmp2. */
tmp = gen_ld32(addr, 0);
tcg_gen_addi_i32(addr, addr, 4);
tmp2 = gen_ld32(addr, 0);
if (insn & (1 << 21)) {
/* Base writeback. */
if (insn & (1 << 24)) {
tcg_gen_addi_i32(addr, addr, 4);
} else {
tcg_gen_addi_i32(addr, addr, -4);
}
store_reg(s, rn, addr);
} else {
dead_tmp(addr);
}
gen_rfe(s, tmp, tmp2);
} else {
/* srs */
op = (insn & 0x1f);
if (op == (env->uncached_cpsr & CPSR_M)) {
addr = load_reg(s, 13);
} else {
addr = new_tmp();
gen_helper_get_r13_banked(addr, cpu_env, tcg_const_i32(op));
}
if ((insn & (1 << 24)) == 0) {
tcg_gen_addi_i32(addr, addr, -8);
}
tmp = load_reg(s, 14);
gen_st32(tmp, addr, 0);
tcg_gen_addi_i32(addr, addr, 4);
tmp = new_tmp();
gen_helper_cpsr_read(tmp);
gen_st32(tmp, addr, 0);
if (insn & (1 << 21)) {
if ((insn & (1 << 24)) == 0) {
tcg_gen_addi_i32(addr, addr, -4);
} else {
tcg_gen_addi_i32(addr, addr, 4);
}
if (op == (env->uncached_cpsr & CPSR_M)) {
store_reg(s, 13, addr);
} else {
gen_helper_set_r13_banked(cpu_env,
tcg_const_i32(op), addr);
}
} else {
dead_tmp(addr);
}
}
} else {
int i;
/* Load/store multiple. */
addr = load_reg(s, rn);
offset = 0;
for (i = 0; i < 16; i++) {
if (insn & (1 << i))
offset += 4;
}
if (insn & (1 << 24)) {
tcg_gen_addi_i32(addr, addr, -offset);
}
for (i = 0; i < 16; i++) {
if ((insn & (1 << i)) == 0)
continue;
if (insn & (1 << 20)) {
/* Load. */
tmp = gen_ld32(addr, IS_USER(s));
if (i == 15) {
gen_bx(s, tmp);
} else {
store_reg(s, i, tmp);
}
} else {
/* Store. */
tmp = load_reg(s, i);
gen_st32(tmp, addr, IS_USER(s));
}
tcg_gen_addi_i32(addr, addr, 4);
}
if (insn & (1 << 21)) {
/* Base register writeback. */
if (insn & (1 << 24)) {
tcg_gen_addi_i32(addr, addr, -offset);
}
/* Fault if writeback register is in register list. */
if (insn & (1 << rn))
goto illegal_op;
store_reg(s, rn, addr);
} else {
dead_tmp(addr);
}
}
}
break;
case 5: /* Data processing register constant shift. */
if (rn == 15)
gen_op_movl_T0_im(0);
else
gen_movl_T0_reg(s, rn);
gen_movl_T1_reg(s, rm);
op = (insn >> 21) & 0xf;
shiftop = (insn >> 4) & 3;
shift = ((insn >> 6) & 3) | ((insn >> 10) & 0x1c);
conds = (insn & (1 << 20)) != 0;
logic_cc = (conds && thumb2_logic_op(op));
gen_arm_shift_im(cpu_T[1], shiftop, shift, logic_cc);
if (gen_thumb2_data_op(s, op, conds, 0))
goto illegal_op;
if (rd != 15)
gen_movl_reg_T0(s, rd);
break;
case 13: /* Misc data processing. */
op = ((insn >> 22) & 6) | ((insn >> 7) & 1);
if (op < 4 && (insn & 0xf000) != 0xf000)
goto illegal_op;
switch (op) {
case 0: /* Register controlled shift. */
tmp = load_reg(s, rn);
tmp2 = load_reg(s, rm);
if ((insn & 0x70) != 0)
goto illegal_op;
op = (insn >> 21) & 3;
logic_cc = (insn & (1 << 20)) != 0;
gen_arm_shift_reg(tmp, op, tmp2, logic_cc);
if (logic_cc)
gen_logic_CC(tmp);
store_reg_bx(env, s, rd, tmp);
break;
case 1: /* Sign/zero extend. */
tmp = load_reg(s, rm);
shift = (insn >> 4) & 3;
/* ??? In many cases it's not neccessary to do a
rotate, a shift is sufficient. */
if (shift != 0)
tcg_gen_rori_i32(tmp, tmp, shift * 8);
op = (insn >> 20) & 7;
switch (op) {
case 0: gen_sxth(tmp); break;
case 1: gen_uxth(tmp); break;
case 2: gen_sxtb16(tmp); break;
case 3: gen_uxtb16(tmp); break;
case 4: gen_sxtb(tmp); break;
case 5: gen_uxtb(tmp); break;
default: goto illegal_op;
}
if (rn != 15) {
tmp2 = load_reg(s, rn);
if ((op >> 1) == 1) {
gen_add16(tmp, tmp2);
} else {
tcg_gen_add_i32(tmp, tmp, tmp2);
dead_tmp(tmp2);
}
}
store_reg(s, rd, tmp);
break;
case 2: /* SIMD add/subtract. */
op = (insn >> 20) & 7;
shift = (insn >> 4) & 7;
if ((op & 3) == 3 || (shift & 3) == 3)
goto illegal_op;
tmp = load_reg(s, rn);
tmp2 = load_reg(s, rm);
gen_thumb2_parallel_addsub(op, shift, tmp, tmp2);
dead_tmp(tmp2);
store_reg(s, rd, tmp);
break;
case 3: /* Other data processing. */
op = ((insn >> 17) & 0x38) | ((insn >> 4) & 7);
if (op < 4) {
/* Saturating add/subtract. */
tmp = load_reg(s, rn);
tmp2 = load_reg(s, rm);
if (op & 2)
gen_helper_double_saturate(tmp, tmp);
if (op & 1)
gen_helper_sub_saturate(tmp, tmp2, tmp);
else
gen_helper_add_saturate(tmp, tmp, tmp2);
dead_tmp(tmp2);
} else {
tmp = load_reg(s, rn);
switch (op) {
case 0x0a: /* rbit */
gen_helper_rbit(tmp, tmp);
break;
case 0x08: /* rev */
tcg_gen_bswap32_i32(tmp, tmp);
break;
case 0x09: /* rev16 */
gen_rev16(tmp);
break;
case 0x0b: /* revsh */
gen_revsh(tmp);
break;
case 0x10: /* sel */
tmp2 = load_reg(s, rm);
tmp3 = new_tmp();
tcg_gen_ld_i32(tmp3, cpu_env, offsetof(CPUState, GE));
gen_helper_sel_flags(tmp, tmp3, tmp, tmp2);
dead_tmp(tmp3);
dead_tmp(tmp2);
break;
case 0x18: /* clz */
gen_helper_clz(tmp, tmp);
break;
default:
goto illegal_op;
}
}
store_reg(s, rd, tmp);
break;
case 4: case 5: /* 32-bit multiply. Sum of absolute differences. */
op = (insn >> 4) & 0xf;
tmp = load_reg(s, rn);
tmp2 = load_reg(s, rm);
switch ((insn >> 20) & 7) {
case 0: /* 32 x 32 -> 32 */
tcg_gen_mul_i32(tmp, tmp, tmp2);
dead_tmp(tmp2);
if (rs != 15) {
tmp2 = load_reg(s, rs);
if (op)
tcg_gen_sub_i32(tmp, tmp2, tmp);
else
tcg_gen_add_i32(tmp, tmp, tmp2);
dead_tmp(tmp2);
}
break;
case 1: /* 16 x 16 -> 32 */
gen_mulxy(tmp, tmp2, op & 2, op & 1);
dead_tmp(tmp2);
if (rs != 15) {
tmp2 = load_reg(s, rs);
gen_helper_add_setq(tmp, tmp, tmp2);
dead_tmp(tmp2);
}
break;
case 2: /* Dual multiply add. */
case 4: /* Dual multiply subtract. */
if (op)
gen_swap_half(tmp2);
gen_smul_dual(tmp, tmp2);
/* This addition cannot overflow. */
if (insn & (1 << 22)) {
tcg_gen_sub_i32(tmp, tmp, tmp2);
} else {
tcg_gen_add_i32(tmp, tmp, tmp2);
}
dead_tmp(tmp2);
if (rs != 15)
{
tmp2 = load_reg(s, rs);
gen_helper_add_setq(tmp, tmp, tmp2);
dead_tmp(tmp2);
}
break;
case 3: /* 32 * 16 -> 32msb */
if (op)
tcg_gen_sari_i32(tmp2, tmp2, 16);
else
gen_sxth(tmp2);
tmp64 = gen_muls_i64_i32(tmp, tmp2);
tcg_gen_shri_i64(tmp64, tmp64, 16);
tmp = new_tmp();
tcg_gen_trunc_i64_i32(tmp, tmp64);
if (rs != 15)
{
tmp2 = load_reg(s, rs);
gen_helper_add_setq(tmp, tmp, tmp2);
dead_tmp(tmp2);
}
break;
case 5: case 6: /* 32 * 32 -> 32msb */
gen_imull(tmp, tmp2);
if (insn & (1 << 5)) {
gen_roundqd(tmp, tmp2);
dead_tmp(tmp2);
} else {
dead_tmp(tmp);
tmp = tmp2;
}
if (rs != 15) {
tmp2 = load_reg(s, rs);
if (insn & (1 << 21)) {
tcg_gen_add_i32(tmp, tmp, tmp2);
} else {
tcg_gen_sub_i32(tmp, tmp2, tmp);
}
dead_tmp(tmp2);
}
break;
case 7: /* Unsigned sum of absolute differences. */
gen_helper_usad8(tmp, tmp, tmp2);
dead_tmp(tmp2);
if (rs != 15) {
tmp2 = load_reg(s, rs);
tcg_gen_add_i32(tmp, tmp, tmp2);
dead_tmp(tmp2);
}
break;
}
store_reg(s, rd, tmp);
break;
case 6: case 7: /* 64-bit multiply, Divide. */
op = ((insn >> 4) & 0xf) | ((insn >> 16) & 0x70);
tmp = load_reg(s, rn);
tmp2 = load_reg(s, rm);
if ((op & 0x50) == 0x10) {
/* sdiv, udiv */
if (!arm_feature(env, ARM_FEATURE_DIV))
goto illegal_op;
if (op & 0x20)
gen_helper_udiv(tmp, tmp, tmp2);
else
gen_helper_sdiv(tmp, tmp, tmp2);
dead_tmp(tmp2);
store_reg(s, rd, tmp);
} else if ((op & 0xe) == 0xc) {
/* Dual multiply accumulate long. */
if (op & 1)
gen_swap_half(tmp2);
gen_smul_dual(tmp, tmp2);
if (op & 0x10) {
tcg_gen_sub_i32(tmp, tmp, tmp2);
} else {
tcg_gen_add_i32(tmp, tmp, tmp2);
}
dead_tmp(tmp2);
/* BUGFIX */
tmp64 = tcg_temp_new_i64();
tcg_gen_ext_i32_i64(tmp64, tmp);
dead_tmp(tmp);
gen_addq(s, tmp64, rs, rd);
gen_storeq_reg(s, rs, rd, tmp64);
} else {
if (op & 0x20) {
/* Unsigned 64-bit multiply */
tmp64 = gen_mulu_i64_i32(tmp, tmp2);
} else {
if (op & 8) {
/* smlalxy */
gen_mulxy(tmp, tmp2, op & 2, op & 1);
dead_tmp(tmp2);
tmp64 = tcg_temp_new_i64();
tcg_gen_ext_i32_i64(tmp64, tmp);
dead_tmp(tmp);
} else {
/* Signed 64-bit multiply */
tmp64 = gen_muls_i64_i32(tmp, tmp2);
}
}
if (op & 4) {
/* umaal */
gen_addq_lo(s, tmp64, rs);
gen_addq_lo(s, tmp64, rd);
} else if (op & 0x40) {
/* 64-bit accumulate. */
gen_addq(s, tmp64, rs, rd);
}
gen_storeq_reg(s, rs, rd, tmp64);
}
break;
}
break;
case 6: case 7: case 14: case 15:
/* Coprocessor. */
if (((insn >> 24) & 3) == 3) {
/* Translate into the equivalent ARM encoding. */
insn = (insn & 0xe2ffffff) | ((insn & (1 << 28)) >> 4);
if (disas_neon_data_insn(env, s, insn))
goto illegal_op;
} else {
if (insn & (1 << 28))
goto illegal_op;
if (disas_coproc_insn (env, s, insn))
goto illegal_op;
}
break;
case 8: case 9: case 10: case 11:
if (insn & (1 << 15)) {
/* Branches, misc control. */
if (insn & 0x5000) {
/* Unconditional branch. */
/* signextend(hw1[10:0]) -> offset[:12]. */
offset = ((int32_t)insn << 5) >> 9 & ~(int32_t)0xfff;
/* hw1[10:0] -> offset[11:1]. */
offset |= (insn & 0x7ff) << 1;
/* (~hw2[13, 11] ^ offset[24]) -> offset[23,22]
offset[24:22] already have the same value because of the
sign extension above. */
offset ^= ((~insn) & (1 << 13)) << 10;
offset ^= ((~insn) & (1 << 11)) << 11;
if (insn & (1 << 14)) {
/* Branch and link. */
gen_op_movl_T1_im(s->pc | 1);
gen_movl_reg_T1(s, 14);
}
offset += s->pc;
if (insn & (1 << 12)) {
/* b/bl */
gen_jmp(s, offset);
} else {
/* blx */
offset &= ~(uint32_t)2;
gen_bx_im(s, offset);
}
} else if (((insn >> 23) & 7) == 7) {
/* Misc control */
if (insn & (1 << 13))
goto illegal_op;
if (insn & (1 << 26)) {
/* Secure monitor call (v6Z) */
goto illegal_op; /* not implemented. */
} else {
op = (insn >> 20) & 7;
switch (op) {
case 0: /* msr cpsr. */
if (IS_M(env)) {
tmp = load_reg(s, rn);
addr = tcg_const_i32(insn & 0xff);
gen_helper_v7m_msr(cpu_env, addr, tmp);
gen_lookup_tb(s);
break;
}
/* fall through */
case 1: /* msr spsr. */
if (IS_M(env))
goto illegal_op;
gen_movl_T0_reg(s, rn);
if (gen_set_psr_T0(s,
msr_mask(env, s, (insn >> 8) & 0xf, op == 1),
op == 1))
goto illegal_op;
break;
case 2: /* cps, nop-hint. */
if (((insn >> 8) & 7) == 0) {
gen_nop_hint(s, insn & 0xff);
}
/* Implemented as NOP in user mode. */
if (IS_USER(s))
break;
offset = 0;
imm = 0;
if (insn & (1 << 10)) {
if (insn & (1 << 7))
offset |= CPSR_A;
if (insn & (1 << 6))
offset |= CPSR_I;
if (insn & (1 << 5))
offset |= CPSR_F;
if (insn & (1 << 9))
imm = CPSR_A | CPSR_I | CPSR_F;
}
if (insn & (1 << 8)) {
offset |= 0x1f;
imm |= (insn & 0x1f);
}
if (offset) {
gen_op_movl_T0_im(imm);
gen_set_psr_T0(s, offset, 0);
}
break;
case 3: /* Special control operations. */
op = (insn >> 4) & 0xf;
switch (op) {
case 2: /* clrex */
gen_helper_clrex(cpu_env);
break;
case 4: /* dsb */
case 5: /* dmb */
case 6: /* isb */
/* These execute as NOPs. */
ARCH(7);
break;
default:
goto illegal_op;
}
break;
case 4: /* bxj */
/* Trivial implementation equivalent to bx. */
tmp = load_reg(s, rn);
gen_bx(s, tmp);
break;
case 5: /* Exception return. */
/* Unpredictable in user mode. */
goto illegal_op;
case 6: /* mrs cpsr. */
tmp = new_tmp();
if (IS_M(env)) {
addr = tcg_const_i32(insn & 0xff);
gen_helper_v7m_mrs(tmp, cpu_env, addr);
} else {
gen_helper_cpsr_read(tmp);
}
store_reg(s, rd, tmp);
break;
case 7: /* mrs spsr. */
/* Not accessible in user mode. */
if (IS_USER(s) || IS_M(env))
goto illegal_op;
tmp = load_cpu_field(spsr);
store_reg(s, rd, tmp);
break;
}
}
} else {
/* Conditional branch. */
op = (insn >> 22) & 0xf;
/* Generate a conditional jump to next instruction. */
s->condlabel = gen_new_label();
gen_test_cc(op ^ 1, s->condlabel);
s->condjmp = 1;
/* offset[11:1] = insn[10:0] */
offset = (insn & 0x7ff) << 1;
/* offset[17:12] = insn[21:16]. */
offset |= (insn & 0x003f0000) >> 4;
/* offset[31:20] = insn[26]. */
offset |= ((int32_t)((insn << 5) & 0x80000000)) >> 11;
/* offset[18] = insn[13]. */
offset |= (insn & (1 << 13)) << 5;
/* offset[19] = insn[11]. */
offset |= (insn & (1 << 11)) << 8;
/* jump to the offset */
gen_jmp(s, s->pc + offset);
}
} else {
/* Data processing immediate. */
if (insn & (1 << 25)) {
if (insn & (1 << 24)) {
if (insn & (1 << 20))
goto illegal_op;
/* Bitfield/Saturate. */
op = (insn >> 21) & 7;
imm = insn & 0x1f;
shift = ((insn >> 6) & 3) | ((insn >> 10) & 0x1c);
if (rn == 15) {
tmp = new_tmp();
tcg_gen_movi_i32(tmp, 0);
} else {
tmp = load_reg(s, rn);
}
switch (op) {
case 2: /* Signed bitfield extract. */
imm++;
if (shift + imm > 32)
goto illegal_op;
if (imm < 32)
gen_sbfx(tmp, shift, imm);
break;
case 6: /* Unsigned bitfield extract. */
imm++;
if (shift + imm > 32)
goto illegal_op;
if (imm < 32)
gen_ubfx(tmp, shift, (1u << imm) - 1);
break;
case 3: /* Bitfield insert/clear. */
if (imm < shift)
goto illegal_op;
imm = imm + 1 - shift;
if (imm != 32) {
tmp2 = load_reg(s, rd);
gen_bfi(tmp, tmp2, tmp, shift, (1u << imm) - 1);
dead_tmp(tmp2);
}
break;
case 7:
goto illegal_op;
default: /* Saturate. */
if (shift) {
if (op & 1)
tcg_gen_sari_i32(tmp, tmp, shift);
else
tcg_gen_shli_i32(tmp, tmp, shift);
}
tmp2 = tcg_const_i32(imm);
if (op & 4) {
/* Unsigned. */
if ((op & 1) && shift == 0)
gen_helper_usat16(tmp, tmp, tmp2);
else
gen_helper_usat(tmp, tmp, tmp2);
} else {
/* Signed. */
if ((op & 1) && shift == 0)
gen_helper_ssat16(tmp, tmp, tmp2);
else
gen_helper_ssat(tmp, tmp, tmp2);
}
break;
}
store_reg(s, rd, tmp);
} else {
imm = ((insn & 0x04000000) >> 15)
| ((insn & 0x7000) >> 4) | (insn & 0xff);
if (insn & (1 << 22)) {
/* 16-bit immediate. */
imm |= (insn >> 4) & 0xf000;
if (insn & (1 << 23)) {
/* movt */
tmp = load_reg(s, rd);
tcg_gen_ext16u_i32(tmp, tmp);
tcg_gen_ori_i32(tmp, tmp, imm << 16);
} else {
/* movw */
tmp = new_tmp();
tcg_gen_movi_i32(tmp, imm);
}
} else {
/* Add/sub 12-bit immediate. */
if (rn == 15) {
offset = s->pc & ~(uint32_t)3;
if (insn & (1 << 23))
offset -= imm;
else
offset += imm;
tmp = new_tmp();
tcg_gen_movi_i32(tmp, offset);
} else {
tmp = load_reg(s, rn);
if (insn & (1 << 23))
tcg_gen_subi_i32(tmp, tmp, imm);
else
tcg_gen_addi_i32(tmp, tmp, imm);
}
}
store_reg(s, rd, tmp);
}
} else {
int shifter_out = 0;
/* modified 12-bit immediate. */
shift = ((insn & 0x04000000) >> 23) | ((insn & 0x7000) >> 12);
imm = (insn & 0xff);
switch (shift) {
case 0: /* XY */
/* Nothing to do. */
break;
case 1: /* 00XY00XY */
imm |= imm << 16;
break;
case 2: /* XY00XY00 */
imm |= imm << 16;
imm <<= 8;
break;
case 3: /* XYXYXYXY */
imm |= imm << 16;
imm |= imm << 8;
break;
default: /* Rotated constant. */
shift = (shift << 1) | (imm >> 7);
imm |= 0x80;
imm = imm << (32 - shift);
shifter_out = 1;
break;
}
gen_op_movl_T1_im(imm);
rn = (insn >> 16) & 0xf;
if (rn == 15)
gen_op_movl_T0_im(0);
else
gen_movl_T0_reg(s, rn);
op = (insn >> 21) & 0xf;
if (gen_thumb2_data_op(s, op, (insn & (1 << 20)) != 0,
shifter_out))
goto illegal_op;
rd = (insn >> 8) & 0xf;
if (rd != 15) {
gen_movl_reg_T0(s, rd);
}
}
}
break;
case 12: /* Load/store single data item. */
{
int postinc = 0;
int writeback = 0;
int user;
if ((insn & 0x01100000) == 0x01000000) {
if (disas_neon_ls_insn(env, s, insn))
goto illegal_op;
break;
}
user = IS_USER(s);
if (rn == 15) {
addr = new_tmp();
/* PC relative. */
/* s->pc has already been incremented by 4. */
imm = s->pc & 0xfffffffc;
if (insn & (1 << 23))
imm += insn & 0xfff;
else
imm -= insn & 0xfff;
tcg_gen_movi_i32(addr, imm);
} else {
addr = load_reg(s, rn);
if (insn & (1 << 23)) {
/* Positive offset. */
imm = insn & 0xfff;
tcg_gen_addi_i32(addr, addr, imm);
} else {
op = (insn >> 8) & 7;
imm = insn & 0xff;
switch (op) {
case 0: case 8: /* Shifted Register. */
shift = (insn >> 4) & 0xf;
if (shift > 3)
goto illegal_op;
tmp = load_reg(s, rm);
if (shift)
tcg_gen_shli_i32(tmp, tmp, shift);
tcg_gen_add_i32(addr, addr, tmp);
dead_tmp(tmp);
break;
case 4: /* Negative offset. */
tcg_gen_addi_i32(addr, addr, -imm);
break;
case 6: /* User privilege. */
tcg_gen_addi_i32(addr, addr, imm);
user = 1;
break;
case 1: /* Post-decrement. */
imm = -imm;
/* Fall through. */
case 3: /* Post-increment. */
postinc = 1;
writeback = 1;
break;
case 5: /* Pre-decrement. */
imm = -imm;
/* Fall through. */
case 7: /* Pre-increment. */
tcg_gen_addi_i32(addr, addr, imm);
writeback = 1;
break;
default:
goto illegal_op;
}
}
}
op = ((insn >> 21) & 3) | ((insn >> 22) & 4);
if (insn & (1 << 20)) {
/* Load. */
if (rs == 15 && op != 2) {
if (op & 2)
goto illegal_op;
/* Memory hint. Implemented as NOP. */
} else {
switch (op) {
case 0: tmp = gen_ld8u(addr, user); break;
case 4: tmp = gen_ld8s(addr, user); break;
case 1: tmp = gen_ld16u(addr, user); break;
case 5: tmp = gen_ld16s(addr, user); break;
case 2: tmp = gen_ld32(addr, user); break;
default: goto illegal_op;
}
if (rs == 15) {
gen_bx(s, tmp);
} else {
store_reg(s, rs, tmp);
}
}
} else {
/* Store. */
if (rs == 15)
goto illegal_op;
tmp = load_reg(s, rs);
switch (op) {
case 0: gen_st8(tmp, addr, user); break;
case 1: gen_st16(tmp, addr, user); break;
case 2: gen_st32(tmp, addr, user); break;
default: goto illegal_op;
}
}
if (postinc)
tcg_gen_addi_i32(addr, addr, imm);
if (writeback) {
store_reg(s, rn, addr);
} else {
dead_tmp(addr);
}
}
break;
default:
goto illegal_op;
}
return 0;
illegal_op:
return 1;
}
static void disas_thumb_insn(CPUState *env, DisasContext *s)
{
uint32_t val, insn, op, rm, rn, rd, shift, cond;
int32_t offset;
int i;
TCGv tmp;
TCGv tmp2;
TCGv addr;
if (s->condexec_mask) {
cond = s->condexec_cond;
s->condlabel = gen_new_label();
gen_test_cc(cond ^ 1, s->condlabel);
s->condjmp = 1;
}
insn = lduw_code(s->pc);
s->pc += 2;
switch (insn >> 12) {
case 0: case 1:
rd = insn & 7;
op = (insn >> 11) & 3;
if (op == 3) {
/* add/subtract */
rn = (insn >> 3) & 7;
gen_movl_T0_reg(s, rn);
if (insn & (1 << 10)) {
/* immediate */
gen_op_movl_T1_im((insn >> 6) & 7);
} else {
/* reg */
rm = (insn >> 6) & 7;
gen_movl_T1_reg(s, rm);
}
if (insn & (1 << 9)) {
if (s->condexec_mask)
gen_op_subl_T0_T1();
else
gen_op_subl_T0_T1_cc();
} else {
if (s->condexec_mask)
gen_op_addl_T0_T1();
else
gen_op_addl_T0_T1_cc();
}
gen_movl_reg_T0(s, rd);
} else {
/* shift immediate */
rm = (insn >> 3) & 7;
shift = (insn >> 6) & 0x1f;
tmp = load_reg(s, rm);
gen_arm_shift_im(tmp, op, shift, s->condexec_mask == 0);
if (!s->condexec_mask)
gen_logic_CC(tmp);
store_reg(s, rd, tmp);
}
break;
case 2: case 3:
/* arithmetic large immediate */
op = (insn >> 11) & 3;
rd = (insn >> 8) & 0x7;
if (op == 0) {
gen_op_movl_T0_im(insn & 0xff);
} else {
gen_movl_T0_reg(s, rd);
gen_op_movl_T1_im(insn & 0xff);
}
switch (op) {
case 0: /* mov */
if (!s->condexec_mask)
gen_op_logic_T0_cc();
break;
case 1: /* cmp */
gen_op_subl_T0_T1_cc();
break;
case 2: /* add */
if (s->condexec_mask)
gen_op_addl_T0_T1();
else
gen_op_addl_T0_T1_cc();
break;
case 3: /* sub */
if (s->condexec_mask)
gen_op_subl_T0_T1();
else
gen_op_subl_T0_T1_cc();
break;
}
if (op != 1)
gen_movl_reg_T0(s, rd);
break;
case 4:
if (insn & (1 << 11)) {
rd = (insn >> 8) & 7;
/* load pc-relative. Bit 1 of PC is ignored. */
val = s->pc + 2 + ((insn & 0xff) * 4);
val &= ~(uint32_t)2;
addr = new_tmp();
tcg_gen_movi_i32(addr, val);
tmp = gen_ld32(addr, IS_USER(s));
dead_tmp(addr);
store_reg(s, rd, tmp);
break;
}
if (insn & (1 << 10)) {
/* data processing extended or blx */
rd = (insn & 7) | ((insn >> 4) & 8);
rm = (insn >> 3) & 0xf;
op = (insn >> 8) & 3;
switch (op) {
case 0: /* add */
gen_movl_T0_reg(s, rd);
gen_movl_T1_reg(s, rm);
gen_op_addl_T0_T1();
gen_movl_reg_T0(s, rd);
break;
case 1: /* cmp */
gen_movl_T0_reg(s, rd);
gen_movl_T1_reg(s, rm);
gen_op_subl_T0_T1_cc();
break;
case 2: /* mov/cpy */
gen_movl_T0_reg(s, rm);
gen_movl_reg_T0(s, rd);
break;
case 3:/* branch [and link] exchange thumb register */
tmp = load_reg(s, rm);
if (insn & (1 << 7)) {
val = (uint32_t)s->pc | 1;
tmp2 = new_tmp();
tcg_gen_movi_i32(tmp2, val);
store_reg(s, 14, tmp2);
}
gen_bx(s, tmp);
break;
}
break;
}
/* data processing register */
rd = insn & 7;
rm = (insn >> 3) & 7;
op = (insn >> 6) & 0xf;
if (op == 2 || op == 3 || op == 4 || op == 7) {
/* the shift/rotate ops want the operands backwards */
val = rm;
rm = rd;
rd = val;
val = 1;
} else {
val = 0;
}
if (op == 9) /* neg */
gen_op_movl_T0_im(0);
else if (op != 0xf) /* mvn doesn't read its first operand */
gen_movl_T0_reg(s, rd);
gen_movl_T1_reg(s, rm);
switch (op) {
case 0x0: /* and */
gen_op_andl_T0_T1();
if (!s->condexec_mask)
gen_op_logic_T0_cc();
break;
case 0x1: /* eor */
gen_op_xorl_T0_T1();
if (!s->condexec_mask)
gen_op_logic_T0_cc();
break;
case 0x2: /* lsl */
if (s->condexec_mask) {
gen_helper_shl(cpu_T[1], cpu_T[1], cpu_T[0]);
} else {
gen_helper_shl_cc(cpu_T[1], cpu_T[1], cpu_T[0]);
gen_op_logic_T1_cc();
}
break;
case 0x3: /* lsr */
if (s->condexec_mask) {
gen_helper_shr(cpu_T[1], cpu_T[1], cpu_T[0]);
} else {
gen_helper_shr_cc(cpu_T[1], cpu_T[1], cpu_T[0]);
gen_op_logic_T1_cc();
}
break;
case 0x4: /* asr */
if (s->condexec_mask) {
gen_helper_sar(cpu_T[1], cpu_T[1], cpu_T[0]);
} else {
gen_helper_sar_cc(cpu_T[1], cpu_T[1], cpu_T[0]);
gen_op_logic_T1_cc();
}
break;
case 0x5: /* adc */
if (s->condexec_mask)
gen_adc_T0_T1();
else
gen_op_adcl_T0_T1_cc();
break;
case 0x6: /* sbc */
if (s->condexec_mask)
gen_sbc_T0_T1();
else
gen_op_sbcl_T0_T1_cc();
break;
case 0x7: /* ror */
if (s->condexec_mask) {
gen_helper_ror(cpu_T[1], cpu_T[1], cpu_T[0]);
} else {
gen_helper_ror_cc(cpu_T[1], cpu_T[1], cpu_T[0]);
gen_op_logic_T1_cc();
}
break;
case 0x8: /* tst */
gen_op_andl_T0_T1();
gen_op_logic_T0_cc();
rd = 16;
break;
case 0x9: /* neg */
if (s->condexec_mask)
tcg_gen_neg_i32(cpu_T[0], cpu_T[1]);
else
gen_op_subl_T0_T1_cc();
break;
case 0xa: /* cmp */
gen_op_subl_T0_T1_cc();
rd = 16;
break;
case 0xb: /* cmn */
gen_op_addl_T0_T1_cc();
rd = 16;
break;
case 0xc: /* orr */
gen_op_orl_T0_T1();
if (!s->condexec_mask)
gen_op_logic_T0_cc();
break;
case 0xd: /* mul */
gen_op_mull_T0_T1();
if (!s->condexec_mask)
gen_op_logic_T0_cc();
break;
case 0xe: /* bic */
gen_op_bicl_T0_T1();
if (!s->condexec_mask)
gen_op_logic_T0_cc();
break;
case 0xf: /* mvn */
gen_op_notl_T1();
if (!s->condexec_mask)
gen_op_logic_T1_cc();
val = 1;
rm = rd;
break;
}
if (rd != 16) {
if (val)
gen_movl_reg_T1(s, rm);
else
gen_movl_reg_T0(s, rd);
}
break;
case 5:
/* load/store register offset. */
rd = insn & 7;
rn = (insn >> 3) & 7;
rm = (insn >> 6) & 7;
op = (insn >> 9) & 7;
addr = load_reg(s, rn);
tmp = load_reg(s, rm);
tcg_gen_add_i32(addr, addr, tmp);
dead_tmp(tmp);
if (op < 3) /* store */
tmp = load_reg(s, rd);
switch (op) {
case 0: /* str */
gen_st32(tmp, addr, IS_USER(s));
break;
case 1: /* strh */
gen_st16(tmp, addr, IS_USER(s));
break;
case 2: /* strb */
gen_st8(tmp, addr, IS_USER(s));
break;
case 3: /* ldrsb */
tmp = gen_ld8s(addr, IS_USER(s));
break;
case 4: /* ldr */
tmp = gen_ld32(addr, IS_USER(s));
break;
case 5: /* ldrh */
tmp = gen_ld16u(addr, IS_USER(s));
break;
case 6: /* ldrb */
tmp = gen_ld8u(addr, IS_USER(s));
break;
case 7: /* ldrsh */
tmp = gen_ld16s(addr, IS_USER(s));
break;
}
if (op >= 3) /* load */
store_reg(s, rd, tmp);
dead_tmp(addr);
break;
case 6:
/* load/store word immediate offset */
rd = insn & 7;
rn = (insn >> 3) & 7;
addr = load_reg(s, rn);
val = (insn >> 4) & 0x7c;
tcg_gen_addi_i32(addr, addr, val);
if (insn & (1 << 11)) {
/* load */
tmp = gen_ld32(addr, IS_USER(s));
store_reg(s, rd, tmp);
} else {
/* store */
tmp = load_reg(s, rd);
gen_st32(tmp, addr, IS_USER(s));
}
dead_tmp(addr);
break;
case 7:
/* load/store byte immediate offset */
rd = insn & 7;
rn = (insn >> 3) & 7;
addr = load_reg(s, rn);
val = (insn >> 6) & 0x1f;
tcg_gen_addi_i32(addr, addr, val);
if (insn & (1 << 11)) {
/* load */
tmp = gen_ld8u(addr, IS_USER(s));
store_reg(s, rd, tmp);
} else {
/* store */
tmp = load_reg(s, rd);
gen_st8(tmp, addr, IS_USER(s));
}
dead_tmp(addr);
break;
case 8:
/* load/store halfword immediate offset */
rd = insn & 7;
rn = (insn >> 3) & 7;
addr = load_reg(s, rn);
val = (insn >> 5) & 0x3e;
tcg_gen_addi_i32(addr, addr, val);
if (insn & (1 << 11)) {
/* load */
tmp = gen_ld16u(addr, IS_USER(s));
store_reg(s, rd, tmp);
} else {
/* store */
tmp = load_reg(s, rd);
gen_st16(tmp, addr, IS_USER(s));
}
dead_tmp(addr);
break;
case 9:
/* load/store from stack */
rd = (insn >> 8) & 7;
addr = load_reg(s, 13);
val = (insn & 0xff) * 4;
tcg_gen_addi_i32(addr, addr, val);
if (insn & (1 << 11)) {
/* load */
tmp = gen_ld32(addr, IS_USER(s));
store_reg(s, rd, tmp);
} else {
/* store */
tmp = load_reg(s, rd);
gen_st32(tmp, addr, IS_USER(s));
}
dead_tmp(addr);
break;
case 10:
/* add to high reg */
rd = (insn >> 8) & 7;
if (insn & (1 << 11)) {
/* SP */
tmp = load_reg(s, 13);
} else {
/* PC. bit 1 is ignored. */
tmp = new_tmp();
tcg_gen_movi_i32(tmp, (s->pc + 2) & ~(uint32_t)2);
}
val = (insn & 0xff) * 4;
tcg_gen_addi_i32(tmp, tmp, val);
store_reg(s, rd, tmp);
break;
case 11:
/* misc */
op = (insn >> 8) & 0xf;
switch (op) {
case 0:
/* adjust stack pointer */
tmp = load_reg(s, 13);
val = (insn & 0x7f) * 4;
if (insn & (1 << 7))
val = -(int32_t)val;
tcg_gen_addi_i32(tmp, tmp, val);
store_reg(s, 13, tmp);
break;
case 2: /* sign/zero extend. */
ARCH(6);
rd = insn & 7;
rm = (insn >> 3) & 7;
tmp = load_reg(s, rm);
switch ((insn >> 6) & 3) {
case 0: gen_sxth(tmp); break;
case 1: gen_sxtb(tmp); break;
case 2: gen_uxth(tmp); break;
case 3: gen_uxtb(tmp); break;
}
store_reg(s, rd, tmp);
break;
case 4: case 5: case 0xc: case 0xd:
/* push/pop */
addr = load_reg(s, 13);
if (insn & (1 << 8))
offset = 4;
else
offset = 0;
for (i = 0; i < 8; i++) {
if (insn & (1 << i))
offset += 4;
}
if ((insn & (1 << 11)) == 0) {
tcg_gen_addi_i32(addr, addr, -offset);
}
for (i = 0; i < 8; i++) {
if (insn & (1 << i)) {
if (insn & (1 << 11)) {
/* pop */
tmp = gen_ld32(addr, IS_USER(s));
store_reg(s, i, tmp);
} else {
/* push */
tmp = load_reg(s, i);
gen_st32(tmp, addr, IS_USER(s));
}
/* advance to the next address. */
tcg_gen_addi_i32(addr, addr, 4);
}
}
TCGV_UNUSED(tmp);
if (insn & (1 << 8)) {
if (insn & (1 << 11)) {
/* pop pc */
tmp = gen_ld32(addr, IS_USER(s));
/* don't set the pc until the rest of the instruction
has completed */
} else {
/* push lr */
tmp = load_reg(s, 14);
gen_st32(tmp, addr, IS_USER(s));
}
tcg_gen_addi_i32(addr, addr, 4);
}
if ((insn & (1 << 11)) == 0) {
tcg_gen_addi_i32(addr, addr, -offset);
}
/* write back the new stack pointer */
store_reg(s, 13, addr);
/* set the new PC value */
if ((insn & 0x0900) == 0x0900)
gen_bx(s, tmp);
break;
case 1: case 3: case 9: case 11: /* czb */
rm = insn & 7;
tmp = load_reg(s, rm);
s->condlabel = gen_new_label();
s->condjmp = 1;
if (insn & (1 << 11))
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, s->condlabel);
else
tcg_gen_brcondi_i32(TCG_COND_NE, tmp, 0, s->condlabel);
dead_tmp(tmp);
offset = ((insn & 0xf8) >> 2) | (insn & 0x200) >> 3;
val = (uint32_t)s->pc + 2;
val += offset;
gen_jmp(s, val);
break;
case 15: /* IT, nop-hint. */
if ((insn & 0xf) == 0) {
gen_nop_hint(s, (insn >> 4) & 0xf);
break;
}
/* If Then. */
s->condexec_cond = (insn >> 4) & 0xe;
s->condexec_mask = insn & 0x1f;
/* No actual code generated for this insn, just setup state. */
break;
case 0xe: /* bkpt */
gen_set_condexec(s);
gen_set_pc_im(s->pc - 2);
gen_exception(EXCP_BKPT);
s->is_jmp = DISAS_JUMP;
break;
case 0xa: /* rev */
ARCH(6);
rn = (insn >> 3) & 0x7;
rd = insn & 0x7;
tmp = load_reg(s, rn);
switch ((insn >> 6) & 3) {
case 0: tcg_gen_bswap32_i32(tmp, tmp); break;
case 1: gen_rev16(tmp); break;
case 3: gen_revsh(tmp); break;
default: goto illegal_op;
}
store_reg(s, rd, tmp);
break;
case 6: /* cps */
ARCH(6);
if (IS_USER(s))
break;
if (IS_M(env)) {
tmp = tcg_const_i32((insn & (1 << 4)) != 0);
/* PRIMASK */
if (insn & 1) {
addr = tcg_const_i32(16);
gen_helper_v7m_msr(cpu_env, addr, tmp);
}
/* FAULTMASK */
if (insn & 2) {
addr = tcg_const_i32(17);
gen_helper_v7m_msr(cpu_env, addr, tmp);
}
gen_lookup_tb(s);
} else {
if (insn & (1 << 4))
shift = CPSR_A | CPSR_I | CPSR_F;
else
shift = 0;
val = ((insn & 7) << 6) & shift;
gen_op_movl_T0_im(val);
gen_set_psr_T0(s, shift, 0);
}
break;
default:
goto undef;
}
break;
case 12:
/* load/store multiple */
rn = (insn >> 8) & 0x7;
addr = load_reg(s, rn);
for (i = 0; i < 8; i++) {
if (insn & (1 << i)) {
if (insn & (1 << 11)) {
/* load */
tmp = gen_ld32(addr, IS_USER(s));
store_reg(s, i, tmp);
} else {
/* store */
tmp = load_reg(s, i);
gen_st32(tmp, addr, IS_USER(s));
}
/* advance to the next address */
tcg_gen_addi_i32(addr, addr, 4);
}
}
/* Base register writeback. */
if ((insn & (1 << rn)) == 0) {
store_reg(s, rn, addr);
} else {
dead_tmp(addr);
}
break;
case 13:
/* conditional branch or swi */
cond = (insn >> 8) & 0xf;
if (cond == 0xe)
goto undef;
if (cond == 0xf) {
/* swi */
gen_set_condexec(s);
gen_set_pc_im(s->pc);
s->is_jmp = DISAS_SWI;
break;
}
/* generate a conditional jump to next instruction */
s->condlabel = gen_new_label();
gen_test_cc(cond ^ 1, s->condlabel);
s->condjmp = 1;
gen_movl_T1_reg(s, 15);
/* jump to the offset */
val = (uint32_t)s->pc + 2;
offset = ((int32_t)insn << 24) >> 24;
val += offset << 1;
gen_jmp(s, val);
break;
case 14:
if (insn & (1 << 11)) {
if (disas_thumb2_insn(env, s, insn))
goto undef32;
break;
}
/* unconditional branch */
val = (uint32_t)s->pc;
offset = ((int32_t)insn << 21) >> 21;
val += (offset << 1) + 2;
gen_jmp(s, val);
break;
case 15:
if (disas_thumb2_insn(env, s, insn))
goto undef32;
break;
}
return;
undef32:
gen_set_condexec(s);
gen_set_pc_im(s->pc - 4);
gen_exception(EXCP_UDEF);
s->is_jmp = DISAS_JUMP;
return;
illegal_op:
undef:
gen_set_condexec(s);
gen_set_pc_im(s->pc - 2);
gen_exception(EXCP_UDEF);
s->is_jmp = DISAS_JUMP;
}
/* generate intermediate code in gen_opc_buf and gen_opparam_buf for
basic block 'tb'. If search_pc is TRUE, also generate PC
information for each intermediate instruction. */
static inline void gen_intermediate_code_internal(CPUState *env,
TranslationBlock *tb,
int search_pc)
{
DisasContext dc1, *dc = &dc1;
CPUBreakpoint *bp;
uint16_t *gen_opc_end;
int j, lj;
target_ulong pc_start;
uint32_t next_page_start;
int num_insns;
int max_insns;
/* generate intermediate code */
num_temps = 0;
memset(temps, 0, sizeof(temps));
pc_start = tb->pc;
dc->tb = tb;
gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
dc->is_jmp = DISAS_NEXT;
dc->pc = pc_start;
dc->singlestep_enabled = env->singlestep_enabled;
dc->condjmp = 0;
dc->thumb = env->thumb;
dc->condexec_mask = (env->condexec_bits & 0xf) << 1;
dc->condexec_cond = env->condexec_bits >> 4;
#if !defined(CONFIG_USER_ONLY)
if (IS_M(env)) {
dc->user = ((env->v7m.exception == 0) && (env->v7m.control & 1));
} else {
dc->user = (env->uncached_cpsr & 0x1f) == ARM_CPU_MODE_USR;
}
#endif
cpu_F0s = tcg_temp_new_i32();
cpu_F1s = tcg_temp_new_i32();
cpu_F0d = tcg_temp_new_i64();
cpu_F1d = tcg_temp_new_i64();
cpu_V0 = cpu_F0d;
cpu_V1 = cpu_F1d;
/* FIXME: cpu_M0 can probably be the same as cpu_V0. */
cpu_M0 = tcg_temp_new_i64();
next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
lj = -1;
num_insns = 0;
max_insns = tb->cflags & CF_COUNT_MASK;
if (max_insns == 0)
max_insns = CF_COUNT_MASK;
gen_icount_start();
/* Reset the conditional execution bits immediately. This avoids
complications trying to do it at the end of the block. */
if (env->condexec_bits)
{
TCGv tmp = new_tmp();
tcg_gen_movi_i32(tmp, 0);
store_cpu_field(tmp, condexec_bits);
}
do {
#ifdef CONFIG_USER_ONLY
/* Intercept jump to the magic kernel page. */
if (dc->pc >= 0xffff0000) {
/* We always get here via a jump, so know we are not in a
conditional execution block. */
gen_exception(EXCP_KERNEL_TRAP);
dc->is_jmp = DISAS_UPDATE;
break;
}
#else
if (dc->pc >= 0xfffffff0 && IS_M(env)) {
/* We always get here via a jump, so know we are not in a
conditional execution block. */
gen_exception(EXCP_EXCEPTION_EXIT);
dc->is_jmp = DISAS_UPDATE;
break;
}
#endif
if (unlikely(!TAILQ_EMPTY(&env->breakpoints))) {
TAILQ_FOREACH(bp, &env->breakpoints, entry) {
if (bp->pc == dc->pc) {
gen_set_condexec(dc);
gen_set_pc_im(dc->pc);
gen_exception(EXCP_DEBUG);
dc->is_jmp = DISAS_JUMP;
/* Advance PC so that clearing the breakpoint will
invalidate this TB. */
dc->pc += 2;
goto done_generating;
break;
}
}
}
if (search_pc) {
j = gen_opc_ptr - gen_opc_buf;
if (lj < j) {
lj++;
while (lj < j)
gen_opc_instr_start[lj++] = 0;
}
gen_opc_pc[lj] = dc->pc;
gen_opc_instr_start[lj] = 1;
gen_opc_icount[lj] = num_insns;
}
if (num_insns + 1 == max_insns && (tb->cflags & CF_LAST_IO))
gen_io_start();
if (env->thumb) {
disas_thumb_insn(env, dc);
if (dc->condexec_mask) {
dc->condexec_cond = (dc->condexec_cond & 0xe)
| ((dc->condexec_mask >> 4) & 1);
dc->condexec_mask = (dc->condexec_mask << 1) & 0x1f;
if (dc->condexec_mask == 0) {
dc->condexec_cond = 0;
}
}
} else {
disas_arm_insn(env, dc);
}
if (num_temps) {
fprintf(stderr, "Internal resource leak before %08x\n", dc->pc);
num_temps = 0;
}
if (dc->condjmp && !dc->is_jmp) {
gen_set_label(dc->condlabel);
dc->condjmp = 0;
}
/* Translation stops when a conditional branch is encountered.
* Otherwise the subsequent code could get translated several times.
* Also stop translation when a page boundary is reached. This
* ensures prefetch aborts occur at the right place. */
num_insns ++;
} while (!dc->is_jmp && gen_opc_ptr < gen_opc_end &&
!env->singlestep_enabled &&
!singlestep &&
dc->pc < next_page_start &&
num_insns < max_insns);
if (tb->cflags & CF_LAST_IO) {
if (dc->condjmp) {
/* FIXME: This can theoretically happen with self-modifying
code. */
cpu_abort(env, "IO on conditional branch instruction");
}
gen_io_end();
}
/* At this stage dc->condjmp will only be set when the skipped
instruction was a conditional branch or trap, and the PC has
already been written. */
if (unlikely(env->singlestep_enabled)) {
/* Make sure the pc is updated, and raise a debug exception. */
if (dc->condjmp) {
gen_set_condexec(dc);
if (dc->is_jmp == DISAS_SWI) {
gen_exception(EXCP_SWI);
} else {
gen_exception(EXCP_DEBUG);
}
gen_set_label(dc->condlabel);
}
if (dc->condjmp || !dc->is_jmp) {
gen_set_pc_im(dc->pc);
dc->condjmp = 0;
}
gen_set_condexec(dc);
if (dc->is_jmp == DISAS_SWI && !dc->condjmp) {
gen_exception(EXCP_SWI);
} else {
/* FIXME: Single stepping a WFI insn will not halt
the CPU. */
gen_exception(EXCP_DEBUG);
}
} else {
/* While branches must always occur at the end of an IT block,
there are a few other things that can cause us to terminate
the TB in the middel of an IT block:
- Exception generating instructions (bkpt, swi, undefined).
- Page boundaries.
- Hardware watchpoints.
Hardware breakpoints have already been handled and skip this code.
*/
gen_set_condexec(dc);
switch(dc->is_jmp) {
case DISAS_NEXT:
gen_goto_tb(dc, 1, dc->pc);
break;
default:
case DISAS_JUMP:
case DISAS_UPDATE:
/* indicate that the hash table must be used to find the next TB */
tcg_gen_exit_tb(0);
break;
case DISAS_TB_JUMP:
/* nothing more to generate */
break;
case DISAS_WFI:
gen_helper_wfi();
break;
case DISAS_SWI:
gen_exception(EXCP_SWI);
break;
}
if (dc->condjmp) {
gen_set_label(dc->condlabel);
gen_set_condexec(dc);
gen_goto_tb(dc, 1, dc->pc);
dc->condjmp = 0;
}
}
done_generating:
gen_icount_end(tb, num_insns);
*gen_opc_ptr = INDEX_op_end;
#ifdef DEBUG_DISAS
if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) {
qemu_log("----------------\n");
qemu_log("IN: %s\n", lookup_symbol(pc_start));
log_target_disas(pc_start, dc->pc - pc_start, env->thumb);
qemu_log("\n");
}
#endif
if (search_pc) {
j = gen_opc_ptr - gen_opc_buf;
lj++;
while (lj <= j)
gen_opc_instr_start[lj++] = 0;
} else {
tb->size = dc->pc - pc_start;
tb->icount = num_insns;
}
}
void gen_intermediate_code(CPUState *env, TranslationBlock *tb)
{
gen_intermediate_code_internal(env, tb, 0);
}
void gen_intermediate_code_pc(CPUState *env, TranslationBlock *tb)
{
gen_intermediate_code_internal(env, tb, 1);
}
static const char *cpu_mode_names[16] = {
"usr", "fiq", "irq", "svc", "???", "???", "???", "abt",
"???", "???", "???", "und", "???", "???", "???", "sys"
};
void cpu_dump_state(CPUState *env, FILE *f,
int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
int flags)
{
int i;
#if 0
union {
uint32_t i;
float s;
} s0, s1;
CPU_DoubleU d;
/* ??? This assumes float64 and double have the same layout.
Oh well, it's only debug dumps. */
union {
float64 f64;
double d;
} d0;
#endif
uint32_t psr;
for(i=0;i<16;i++) {
cpu_fprintf(f, "R%02d=%08x", i, env->regs[i]);
if ((i % 4) == 3)
cpu_fprintf(f, "\n");
else
cpu_fprintf(f, " ");
}
psr = cpsr_read(env);
cpu_fprintf(f, "PSR=%08x %c%c%c%c %c %s%d\n",
psr,
psr & (1 << 31) ? 'N' : '-',
psr & (1 << 30) ? 'Z' : '-',
psr & (1 << 29) ? 'C' : '-',
psr & (1 << 28) ? 'V' : '-',
psr & CPSR_T ? 'T' : 'A',
cpu_mode_names[psr & 0xf], (psr & 0x10) ? 32 : 26);
#if 0
for (i = 0; i < 16; i++) {
d.d = env->vfp.regs[i];
s0.i = d.l.lower;
s1.i = d.l.upper;
d0.f64 = d.d;
cpu_fprintf(f, "s%02d=%08x(%8g) s%02d=%08x(%8g) d%02d=%08x%08x(%8g)\n",
i * 2, (int)s0.i, s0.s,
i * 2 + 1, (int)s1.i, s1.s,
i, (int)(uint32_t)d.l.upper, (int)(uint32_t)d.l.lower,
d0.d);
}
cpu_fprintf(f, "FPSCR: %08x\n", (int)env->vfp.xregs[ARM_VFP_FPSCR]);
#endif
}
void gen_pc_load(CPUState *env, TranslationBlock *tb,
unsigned long searched_pc, int pc_pos, void *puc)
{
env->regs[15] = gen_opc_pc[pc_pos];
}
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