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qemu-e2k/target-xtensa/translate.c
Max Filippov 7ff7563fc1 target-xtensa: fix big-endian BBS/BBC implementation 
Quote from ISA, 2.1:

For most Xtensa instructions, bit numbering is irrelevant; only the BBC
and BBS instructions assign bit numbers to values on which the processor
operates. The BBC/BBS instructions use big-endian bit ordering (0 is the
most-significant bit) on a big-endian processor configuration.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-07-28 09:06:40 +00:00

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/*
* Xtensa ISA:
* http://www.tensilica.com/products/literature-docs/documentation/xtensa-isa-databook.htm
*
* Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the Open Source and Linux Lab nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include "cpu.h"
#include "exec-all.h"
#include "disas.h"
#include "tcg-op.h"
#include "qemu-log.h"
#include "sysemu.h"
#include "helper.h"
#define GEN_HELPER 1
#include "helper.h"
typedef struct DisasContext {
const XtensaConfig *config;
TranslationBlock *tb;
uint32_t pc;
uint32_t next_pc;
int cring;
int ring;
uint32_t lbeg;
uint32_t lend;
TCGv_i32 litbase;
int is_jmp;
int singlestep_enabled;
bool sar_5bit;
bool sar_m32_5bit;
bool sar_m32_allocated;
TCGv_i32 sar_m32;
uint32_t ccount_delta;
unsigned used_window;
bool debug;
bool icount;
TCGv_i32 next_icount;
} DisasContext;
static TCGv_ptr cpu_env;
static TCGv_i32 cpu_pc;
static TCGv_i32 cpu_R[16];
static TCGv_i32 cpu_SR[256];
static TCGv_i32 cpu_UR[256];
#include "gen-icount.h"
static const char * const sregnames[256] = {
[LBEG] = "LBEG",
[LEND] = "LEND",
[LCOUNT] = "LCOUNT",
[SAR] = "SAR",
[BR] = "BR",
[LITBASE] = "LITBASE",
[SCOMPARE1] = "SCOMPARE1",
[ACCLO] = "ACCLO",
[ACCHI] = "ACCHI",
[MR] = "MR0",
[MR + 1] = "MR1",
[MR + 2] = "MR2",
[MR + 3] = "MR3",
[WINDOW_BASE] = "WINDOW_BASE",
[WINDOW_START] = "WINDOW_START",
[PTEVADDR] = "PTEVADDR",
[RASID] = "RASID",
[ITLBCFG] = "ITLBCFG",
[DTLBCFG] = "DTLBCFG",
[IBREAKENABLE] = "IBREAKENABLE",
[IBREAKA] = "IBREAKA0",
[IBREAKA + 1] = "IBREAKA1",
[DBREAKA] = "DBREAKA0",
[DBREAKA + 1] = "DBREAKA1",
[DBREAKC] = "DBREAKC0",
[DBREAKC + 1] = "DBREAKC1",
[EPC1] = "EPC1",
[EPC1 + 1] = "EPC2",
[EPC1 + 2] = "EPC3",
[EPC1 + 3] = "EPC4",
[EPC1 + 4] = "EPC5",
[EPC1 + 5] = "EPC6",
[EPC1 + 6] = "EPC7",
[DEPC] = "DEPC",
[EPS2] = "EPS2",
[EPS2 + 1] = "EPS3",
[EPS2 + 2] = "EPS4",
[EPS2 + 3] = "EPS5",
[EPS2 + 4] = "EPS6",
[EPS2 + 5] = "EPS7",
[EXCSAVE1] = "EXCSAVE1",
[EXCSAVE1 + 1] = "EXCSAVE2",
[EXCSAVE1 + 2] = "EXCSAVE3",
[EXCSAVE1 + 3] = "EXCSAVE4",
[EXCSAVE1 + 4] = "EXCSAVE5",
[EXCSAVE1 + 5] = "EXCSAVE6",
[EXCSAVE1 + 6] = "EXCSAVE7",
[CPENABLE] = "CPENABLE",
[INTSET] = "INTSET",
[INTCLEAR] = "INTCLEAR",
[INTENABLE] = "INTENABLE",
[PS] = "PS",
[VECBASE] = "VECBASE",
[EXCCAUSE] = "EXCCAUSE",
[DEBUGCAUSE] = "DEBUGCAUSE",
[CCOUNT] = "CCOUNT",
[PRID] = "PRID",
[ICOUNT] = "ICOUNT",
[ICOUNTLEVEL] = "ICOUNTLEVEL",
[EXCVADDR] = "EXCVADDR",
[CCOMPARE] = "CCOMPARE0",
[CCOMPARE + 1] = "CCOMPARE1",
[CCOMPARE + 2] = "CCOMPARE2",
};
static const char * const uregnames[256] = {
[THREADPTR] = "THREADPTR",
[FCR] = "FCR",
[FSR] = "FSR",
};
void xtensa_translate_init(void)
{
static const char * const regnames[] = {
"ar0", "ar1", "ar2", "ar3",
"ar4", "ar5", "ar6", "ar7",
"ar8", "ar9", "ar10", "ar11",
"ar12", "ar13", "ar14", "ar15",
};
int i;
cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
cpu_pc = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUXtensaState, pc), "pc");
for (i = 0; i < 16; i++) {
cpu_R[i] = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUXtensaState, regs[i]),
regnames[i]);
}
for (i = 0; i < 256; ++i) {
if (sregnames[i]) {
cpu_SR[i] = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUXtensaState, sregs[i]),
sregnames[i]);
}
}
for (i = 0; i < 256; ++i) {
if (uregnames[i]) {
cpu_UR[i] = tcg_global_mem_new_i32(TCG_AREG0,
offsetof(CPUXtensaState, uregs[i]),
uregnames[i]);
}
}
#define GEN_HELPER 2
#include "helper.h"
}
static inline bool option_bits_enabled(DisasContext *dc, uint64_t opt)
{
return xtensa_option_bits_enabled(dc->config, opt);
}
static inline bool option_enabled(DisasContext *dc, int opt)
{
return xtensa_option_enabled(dc->config, opt);
}
static void init_litbase(DisasContext *dc)
{
if (dc->tb->flags & XTENSA_TBFLAG_LITBASE) {
dc->litbase = tcg_temp_local_new_i32();
tcg_gen_andi_i32(dc->litbase, cpu_SR[LITBASE], 0xfffff000);
}
}
static void reset_litbase(DisasContext *dc)
{
if (dc->tb->flags & XTENSA_TBFLAG_LITBASE) {
tcg_temp_free(dc->litbase);
}
}
static void init_sar_tracker(DisasContext *dc)
{
dc->sar_5bit = false;
dc->sar_m32_5bit = false;
dc->sar_m32_allocated = false;
}
static void reset_sar_tracker(DisasContext *dc)
{
if (dc->sar_m32_allocated) {
tcg_temp_free(dc->sar_m32);
}
}
static void gen_right_shift_sar(DisasContext *dc, TCGv_i32 sa)
{
tcg_gen_andi_i32(cpu_SR[SAR], sa, 0x1f);
if (dc->sar_m32_5bit) {
tcg_gen_discard_i32(dc->sar_m32);
}
dc->sar_5bit = true;
dc->sar_m32_5bit = false;
}
static void gen_left_shift_sar(DisasContext *dc, TCGv_i32 sa)
{
TCGv_i32 tmp = tcg_const_i32(32);
if (!dc->sar_m32_allocated) {
dc->sar_m32 = tcg_temp_local_new_i32();
dc->sar_m32_allocated = true;
}
tcg_gen_andi_i32(dc->sar_m32, sa, 0x1f);
tcg_gen_sub_i32(cpu_SR[SAR], tmp, dc->sar_m32);
dc->sar_5bit = false;
dc->sar_m32_5bit = true;
tcg_temp_free(tmp);
}
static void gen_advance_ccount(DisasContext *dc)
{
if (dc->ccount_delta > 0) {
TCGv_i32 tmp = tcg_const_i32(dc->ccount_delta);
dc->ccount_delta = 0;
gen_helper_advance_ccount(cpu_env, tmp);
tcg_temp_free(tmp);
}
}
static void reset_used_window(DisasContext *dc)
{
dc->used_window = 0;
}
static void gen_exception(DisasContext *dc, int excp)
{
TCGv_i32 tmp = tcg_const_i32(excp);
gen_advance_ccount(dc);
gen_helper_exception(cpu_env, tmp);
tcg_temp_free(tmp);
}
static void gen_exception_cause(DisasContext *dc, uint32_t cause)
{
TCGv_i32 tpc = tcg_const_i32(dc->pc);
TCGv_i32 tcause = tcg_const_i32(cause);
gen_advance_ccount(dc);
gen_helper_exception_cause(cpu_env, tpc, tcause);
tcg_temp_free(tpc);
tcg_temp_free(tcause);
if (cause == ILLEGAL_INSTRUCTION_CAUSE ||
cause == SYSCALL_CAUSE) {
dc->is_jmp = DISAS_UPDATE;
}
}
static void gen_exception_cause_vaddr(DisasContext *dc, uint32_t cause,
TCGv_i32 vaddr)
{
TCGv_i32 tpc = tcg_const_i32(dc->pc);
TCGv_i32 tcause = tcg_const_i32(cause);
gen_advance_ccount(dc);
gen_helper_exception_cause_vaddr(cpu_env, tpc, tcause, vaddr);
tcg_temp_free(tpc);
tcg_temp_free(tcause);
}
static void gen_debug_exception(DisasContext *dc, uint32_t cause)
{
TCGv_i32 tpc = tcg_const_i32(dc->pc);
TCGv_i32 tcause = tcg_const_i32(cause);
gen_advance_ccount(dc);
gen_helper_debug_exception(cpu_env, tpc, tcause);
tcg_temp_free(tpc);
tcg_temp_free(tcause);
if (cause & (DEBUGCAUSE_IB | DEBUGCAUSE_BI | DEBUGCAUSE_BN)) {
dc->is_jmp = DISAS_UPDATE;
}
}
static void gen_check_privilege(DisasContext *dc)
{
if (dc->cring) {
gen_exception_cause(dc, PRIVILEGED_CAUSE);
dc->is_jmp = DISAS_UPDATE;
}
}
static void gen_jump_slot(DisasContext *dc, TCGv dest, int slot)
{
tcg_gen_mov_i32(cpu_pc, dest);
gen_advance_ccount(dc);
if (dc->icount) {
tcg_gen_mov_i32(cpu_SR[ICOUNT], dc->next_icount);
}
if (dc->singlestep_enabled) {
gen_exception(dc, EXCP_DEBUG);
} else {
if (slot >= 0) {
tcg_gen_goto_tb(slot);
tcg_gen_exit_tb((tcg_target_long)dc->tb + slot);
} else {
tcg_gen_exit_tb(0);
}
}
dc->is_jmp = DISAS_UPDATE;
}
static void gen_jump(DisasContext *dc, TCGv dest)
{
gen_jump_slot(dc, dest, -1);
}
static void gen_jumpi(DisasContext *dc, uint32_t dest, int slot)
{
TCGv_i32 tmp = tcg_const_i32(dest);
if (((dc->pc ^ dest) & TARGET_PAGE_MASK) != 0) {
slot = -1;
}
gen_jump_slot(dc, tmp, slot);
tcg_temp_free(tmp);
}
static void gen_callw_slot(DisasContext *dc, int callinc, TCGv_i32 dest,
int slot)
{
TCGv_i32 tcallinc = tcg_const_i32(callinc);
tcg_gen_deposit_i32(cpu_SR[PS], cpu_SR[PS],
tcallinc, PS_CALLINC_SHIFT, PS_CALLINC_LEN);
tcg_temp_free(tcallinc);
tcg_gen_movi_i32(cpu_R[callinc << 2],
(callinc << 30) | (dc->next_pc & 0x3fffffff));
gen_jump_slot(dc, dest, slot);
}
static void gen_callw(DisasContext *dc, int callinc, TCGv_i32 dest)
{
gen_callw_slot(dc, callinc, dest, -1);
}
static void gen_callwi(DisasContext *dc, int callinc, uint32_t dest, int slot)
{
TCGv_i32 tmp = tcg_const_i32(dest);
if (((dc->pc ^ dest) & TARGET_PAGE_MASK) != 0) {
slot = -1;
}
gen_callw_slot(dc, callinc, tmp, slot);
tcg_temp_free(tmp);
}
static bool gen_check_loop_end(DisasContext *dc, int slot)
{
if (option_enabled(dc, XTENSA_OPTION_LOOP) &&
!(dc->tb->flags & XTENSA_TBFLAG_EXCM) &&
dc->next_pc == dc->lend) {
int label = gen_new_label();
gen_advance_ccount(dc);
tcg_gen_brcondi_i32(TCG_COND_EQ, cpu_SR[LCOUNT], 0, label);
tcg_gen_subi_i32(cpu_SR[LCOUNT], cpu_SR[LCOUNT], 1);
gen_jumpi(dc, dc->lbeg, slot);
gen_set_label(label);
gen_jumpi(dc, dc->next_pc, -1);
return true;
}
return false;
}
static void gen_jumpi_check_loop_end(DisasContext *dc, int slot)
{
if (!gen_check_loop_end(dc, slot)) {
gen_jumpi(dc, dc->next_pc, slot);
}
}
static void gen_brcond(DisasContext *dc, TCGCond cond,
TCGv_i32 t0, TCGv_i32 t1, uint32_t offset)
{
int label = gen_new_label();
gen_advance_ccount(dc);
tcg_gen_brcond_i32(cond, t0, t1, label);
gen_jumpi_check_loop_end(dc, 0);
gen_set_label(label);
gen_jumpi(dc, dc->pc + offset, 1);
}
static void gen_brcondi(DisasContext *dc, TCGCond cond,
TCGv_i32 t0, uint32_t t1, uint32_t offset)
{
TCGv_i32 tmp = tcg_const_i32(t1);
gen_brcond(dc, cond, t0, tmp, offset);
tcg_temp_free(tmp);
}
static void gen_rsr_ccount(DisasContext *dc, TCGv_i32 d, uint32_t sr)
{
gen_advance_ccount(dc);
tcg_gen_mov_i32(d, cpu_SR[sr]);
}
static void gen_rsr_ptevaddr(DisasContext *dc, TCGv_i32 d, uint32_t sr)
{
tcg_gen_shri_i32(d, cpu_SR[EXCVADDR], 10);
tcg_gen_or_i32(d, d, cpu_SR[sr]);
tcg_gen_andi_i32(d, d, 0xfffffffc);
}
static void gen_rsr(DisasContext *dc, TCGv_i32 d, uint32_t sr)
{
static void (* const rsr_handler[256])(DisasContext *dc,
TCGv_i32 d, uint32_t sr) = {
[CCOUNT] = gen_rsr_ccount,
[PTEVADDR] = gen_rsr_ptevaddr,
};
if (sregnames[sr]) {
if (rsr_handler[sr]) {
rsr_handler[sr](dc, d, sr);
} else {
tcg_gen_mov_i32(d, cpu_SR[sr]);
}
} else {
qemu_log("RSR %d not implemented, ", sr);
}
}
static void gen_wsr_lbeg(DisasContext *dc, uint32_t sr, TCGv_i32 s)
{
gen_helper_wsr_lbeg(cpu_env, s);
gen_jumpi_check_loop_end(dc, 0);
}
static void gen_wsr_lend(DisasContext *dc, uint32_t sr, TCGv_i32 s)
{
gen_helper_wsr_lend(cpu_env, s);
gen_jumpi_check_loop_end(dc, 0);
}
static void gen_wsr_sar(DisasContext *dc, uint32_t sr, TCGv_i32 s)
{
tcg_gen_andi_i32(cpu_SR[sr], s, 0x3f);
if (dc->sar_m32_5bit) {
tcg_gen_discard_i32(dc->sar_m32);
}
dc->sar_5bit = false;
dc->sar_m32_5bit = false;
}
static void gen_wsr_br(DisasContext *dc, uint32_t sr, TCGv_i32 s)
{
tcg_gen_andi_i32(cpu_SR[sr], s, 0xffff);
}
static void gen_wsr_litbase(DisasContext *dc, uint32_t sr, TCGv_i32 s)
{
tcg_gen_andi_i32(cpu_SR[sr], s, 0xfffff001);
/* This can change tb->flags, so exit tb */
gen_jumpi_check_loop_end(dc, -1);
}
static void gen_wsr_acchi(DisasContext *dc, uint32_t sr, TCGv_i32 s)
{
tcg_gen_ext8s_i32(cpu_SR[sr], s);
}
static void gen_wsr_windowbase(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
gen_helper_wsr_windowbase(cpu_env, v);
reset_used_window(dc);
}
static void gen_wsr_windowstart(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
tcg_gen_andi_i32(cpu_SR[sr], v, (1 << dc->config->nareg / 4) - 1);
reset_used_window(dc);
}
static void gen_wsr_ptevaddr(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
tcg_gen_andi_i32(cpu_SR[sr], v, 0xffc00000);
}
static void gen_wsr_rasid(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
gen_helper_wsr_rasid(cpu_env, v);
/* This can change tb->flags, so exit tb */
gen_jumpi_check_loop_end(dc, -1);
}
static void gen_wsr_tlbcfg(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
tcg_gen_andi_i32(cpu_SR[sr], v, 0x01130000);
}
static void gen_wsr_ibreakenable(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
gen_helper_wsr_ibreakenable(cpu_env, v);
gen_jumpi_check_loop_end(dc, 0);
}
static void gen_wsr_ibreaka(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
unsigned id = sr - IBREAKA;
if (id < dc->config->nibreak) {
TCGv_i32 tmp = tcg_const_i32(id);
gen_helper_wsr_ibreaka(cpu_env, tmp, v);
tcg_temp_free(tmp);
gen_jumpi_check_loop_end(dc, 0);
}
}
static void gen_wsr_dbreaka(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
unsigned id = sr - DBREAKA;
if (id < dc->config->ndbreak) {
TCGv_i32 tmp = tcg_const_i32(id);
gen_helper_wsr_dbreaka(cpu_env, tmp, v);
tcg_temp_free(tmp);
}
}
static void gen_wsr_dbreakc(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
unsigned id = sr - DBREAKC;
if (id < dc->config->ndbreak) {
TCGv_i32 tmp = tcg_const_i32(id);
gen_helper_wsr_dbreakc(cpu_env, tmp, v);
tcg_temp_free(tmp);
}
}
static void gen_wsr_intset(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
tcg_gen_andi_i32(cpu_SR[sr], v,
dc->config->inttype_mask[INTTYPE_SOFTWARE]);
gen_helper_check_interrupts(cpu_env);
gen_jumpi_check_loop_end(dc, 0);
}
static void gen_wsr_intclear(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_andi_i32(tmp, v,
dc->config->inttype_mask[INTTYPE_EDGE] |
dc->config->inttype_mask[INTTYPE_NMI] |
dc->config->inttype_mask[INTTYPE_SOFTWARE]);
tcg_gen_andc_i32(cpu_SR[INTSET], cpu_SR[INTSET], tmp);
tcg_temp_free(tmp);
gen_helper_check_interrupts(cpu_env);
}
static void gen_wsr_intenable(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
tcg_gen_mov_i32(cpu_SR[sr], v);
gen_helper_check_interrupts(cpu_env);
gen_jumpi_check_loop_end(dc, 0);
}
static void gen_wsr_ps(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
uint32_t mask = PS_WOE | PS_CALLINC | PS_OWB |
PS_UM | PS_EXCM | PS_INTLEVEL;
if (option_enabled(dc, XTENSA_OPTION_MMU)) {
mask |= PS_RING;
}
tcg_gen_andi_i32(cpu_SR[sr], v, mask);
reset_used_window(dc);
gen_helper_check_interrupts(cpu_env);
/* This can change mmu index and tb->flags, so exit tb */
gen_jumpi_check_loop_end(dc, -1);
}
static void gen_wsr_debugcause(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
}
static void gen_wsr_prid(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
}
static void gen_wsr_icount(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
if (dc->icount) {
tcg_gen_mov_i32(dc->next_icount, v);
} else {
tcg_gen_mov_i32(cpu_SR[sr], v);
}
}
static void gen_wsr_icountlevel(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
tcg_gen_andi_i32(cpu_SR[sr], v, 0xf);
/* This can change tb->flags, so exit tb */
gen_jumpi_check_loop_end(dc, -1);
}
static void gen_wsr_ccompare(DisasContext *dc, uint32_t sr, TCGv_i32 v)
{
uint32_t id = sr - CCOMPARE;
if (id < dc->config->nccompare) {
uint32_t int_bit = 1 << dc->config->timerint[id];
gen_advance_ccount(dc);
tcg_gen_mov_i32(cpu_SR[sr], v);
tcg_gen_andi_i32(cpu_SR[INTSET], cpu_SR[INTSET], ~int_bit);
gen_helper_check_interrupts(cpu_env);
}
}
static void gen_wsr(DisasContext *dc, uint32_t sr, TCGv_i32 s)
{
static void (* const wsr_handler[256])(DisasContext *dc,
uint32_t sr, TCGv_i32 v) = {
[LBEG] = gen_wsr_lbeg,
[LEND] = gen_wsr_lend,
[SAR] = gen_wsr_sar,
[BR] = gen_wsr_br,
[LITBASE] = gen_wsr_litbase,
[ACCHI] = gen_wsr_acchi,
[WINDOW_BASE] = gen_wsr_windowbase,
[WINDOW_START] = gen_wsr_windowstart,
[PTEVADDR] = gen_wsr_ptevaddr,
[RASID] = gen_wsr_rasid,
[ITLBCFG] = gen_wsr_tlbcfg,
[DTLBCFG] = gen_wsr_tlbcfg,
[IBREAKENABLE] = gen_wsr_ibreakenable,
[IBREAKA] = gen_wsr_ibreaka,
[IBREAKA + 1] = gen_wsr_ibreaka,
[DBREAKA] = gen_wsr_dbreaka,
[DBREAKA + 1] = gen_wsr_dbreaka,
[DBREAKC] = gen_wsr_dbreakc,
[DBREAKC + 1] = gen_wsr_dbreakc,
[INTSET] = gen_wsr_intset,
[INTCLEAR] = gen_wsr_intclear,
[INTENABLE] = gen_wsr_intenable,
[PS] = gen_wsr_ps,
[DEBUGCAUSE] = gen_wsr_debugcause,
[PRID] = gen_wsr_prid,
[ICOUNT] = gen_wsr_icount,
[ICOUNTLEVEL] = gen_wsr_icountlevel,
[CCOMPARE] = gen_wsr_ccompare,
[CCOMPARE + 1] = gen_wsr_ccompare,
[CCOMPARE + 2] = gen_wsr_ccompare,
};
if (sregnames[sr]) {
if (wsr_handler[sr]) {
wsr_handler[sr](dc, sr, s);
} else {
tcg_gen_mov_i32(cpu_SR[sr], s);
}
} else {
qemu_log("WSR %d not implemented, ", sr);
}
}
static void gen_load_store_alignment(DisasContext *dc, int shift,
TCGv_i32 addr, bool no_hw_alignment)
{
if (!option_enabled(dc, XTENSA_OPTION_UNALIGNED_EXCEPTION)) {
tcg_gen_andi_i32(addr, addr, ~0 << shift);
} else if (option_enabled(dc, XTENSA_OPTION_HW_ALIGNMENT) &&
no_hw_alignment) {
int label = gen_new_label();
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_andi_i32(tmp, addr, ~(~0 << shift));
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 0, label);
gen_exception_cause_vaddr(dc, LOAD_STORE_ALIGNMENT_CAUSE, addr);
gen_set_label(label);
tcg_temp_free(tmp);
}
}
static void gen_waiti(DisasContext *dc, uint32_t imm4)
{
TCGv_i32 pc = tcg_const_i32(dc->next_pc);
TCGv_i32 intlevel = tcg_const_i32(imm4);
gen_advance_ccount(dc);
gen_helper_waiti(cpu_env, pc, intlevel);
tcg_temp_free(pc);
tcg_temp_free(intlevel);
}
static void gen_window_check1(DisasContext *dc, unsigned r1)
{
if (dc->tb->flags & XTENSA_TBFLAG_EXCM) {
return;
}
if (option_enabled(dc, XTENSA_OPTION_WINDOWED_REGISTER) &&
r1 / 4 > dc->used_window) {
TCGv_i32 pc = tcg_const_i32(dc->pc);
TCGv_i32 w = tcg_const_i32(r1 / 4);
dc->used_window = r1 / 4;
gen_advance_ccount(dc);
gen_helper_window_check(cpu_env, pc, w);
tcg_temp_free(w);
tcg_temp_free(pc);
}
}
static void gen_window_check2(DisasContext *dc, unsigned r1, unsigned r2)
{
gen_window_check1(dc, r1 > r2 ? r1 : r2);
}
static void gen_window_check3(DisasContext *dc, unsigned r1, unsigned r2,
unsigned r3)
{
gen_window_check2(dc, r1, r2 > r3 ? r2 : r3);
}
static TCGv_i32 gen_mac16_m(TCGv_i32 v, bool hi, bool is_unsigned)
{
TCGv_i32 m = tcg_temp_new_i32();
if (hi) {
(is_unsigned ? tcg_gen_shri_i32 : tcg_gen_sari_i32)(m, v, 16);
} else {
(is_unsigned ? tcg_gen_ext16u_i32 : tcg_gen_ext16s_i32)(m, v);
}
return m;
}
static void disas_xtensa_insn(DisasContext *dc)
{
#define HAS_OPTION_BITS(opt) do { \
if (!option_bits_enabled(dc, opt)) { \
qemu_log("Option is not enabled %s:%d\n", \
__FILE__, __LINE__); \
goto invalid_opcode; \
} \
} while (0)
#define HAS_OPTION(opt) HAS_OPTION_BITS(XTENSA_OPTION_BIT(opt))
#define TBD() qemu_log("TBD(pc = %08x): %s:%d\n", dc->pc, __FILE__, __LINE__)
#define RESERVED() do { \
qemu_log("RESERVED(pc = %08x, %02x%02x%02x): %s:%d\n", \
dc->pc, b0, b1, b2, __FILE__, __LINE__); \
goto invalid_opcode; \
} while (0)
#ifdef TARGET_WORDS_BIGENDIAN
#define OP0 (((b0) & 0xf0) >> 4)
#define OP1 (((b2) & 0xf0) >> 4)
#define OP2 ((b2) & 0xf)
#define RRR_R ((b1) & 0xf)
#define RRR_S (((b1) & 0xf0) >> 4)
#define RRR_T ((b0) & 0xf)
#else
#define OP0 (((b0) & 0xf))
#define OP1 (((b2) & 0xf))
#define OP2 (((b2) & 0xf0) >> 4)
#define RRR_R (((b1) & 0xf0) >> 4)
#define RRR_S (((b1) & 0xf))
#define RRR_T (((b0) & 0xf0) >> 4)
#endif
#define RRR_X ((RRR_R & 0x4) >> 2)
#define RRR_Y ((RRR_T & 0x4) >> 2)
#define RRR_W (RRR_R & 0x3)
#define RRRN_R RRR_R
#define RRRN_S RRR_S
#define RRRN_T RRR_T
#define RRI8_R RRR_R
#define RRI8_S RRR_S
#define RRI8_T RRR_T
#define RRI8_IMM8 (b2)
#define RRI8_IMM8_SE ((((b2) & 0x80) ? 0xffffff00 : 0) | RRI8_IMM8)
#ifdef TARGET_WORDS_BIGENDIAN
#define RI16_IMM16 (((b1) << 8) | (b2))
#else
#define RI16_IMM16 (((b2) << 8) | (b1))
#endif
#ifdef TARGET_WORDS_BIGENDIAN
#define CALL_N (((b0) & 0xc) >> 2)
#define CALL_OFFSET ((((b0) & 0x3) << 16) | ((b1) << 8) | (b2))
#else
#define CALL_N (((b0) & 0x30) >> 4)
#define CALL_OFFSET ((((b0) & 0xc0) >> 6) | ((b1) << 2) | ((b2) << 10))
#endif
#define CALL_OFFSET_SE \
(((CALL_OFFSET & 0x20000) ? 0xfffc0000 : 0) | CALL_OFFSET)
#define CALLX_N CALL_N
#ifdef TARGET_WORDS_BIGENDIAN
#define CALLX_M ((b0) & 0x3)
#else
#define CALLX_M (((b0) & 0xc0) >> 6)
#endif
#define CALLX_S RRR_S
#define BRI12_M CALLX_M
#define BRI12_S RRR_S
#ifdef TARGET_WORDS_BIGENDIAN
#define BRI12_IMM12 ((((b1) & 0xf) << 8) | (b2))
#else
#define BRI12_IMM12 ((((b1) & 0xf0) >> 4) | ((b2) << 4))
#endif
#define BRI12_IMM12_SE (((BRI12_IMM12 & 0x800) ? 0xfffff000 : 0) | BRI12_IMM12)
#define BRI8_M BRI12_M
#define BRI8_R RRI8_R
#define BRI8_S RRI8_S
#define BRI8_IMM8 RRI8_IMM8
#define BRI8_IMM8_SE RRI8_IMM8_SE
#define RSR_SR (b1)
uint8_t b0 = cpu_ldub_code(cpu_single_env, dc->pc);
uint8_t b1 = cpu_ldub_code(cpu_single_env, dc->pc + 1);
uint8_t b2 = 0;
static const uint32_t B4CONST[] = {
0xffffffff, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 16, 32, 64, 128, 256
};
static const uint32_t B4CONSTU[] = {
32768, 65536, 2, 3, 4, 5, 6, 7, 8, 10, 12, 16, 32, 64, 128, 256
};
if (OP0 >= 8) {
dc->next_pc = dc->pc + 2;
HAS_OPTION(XTENSA_OPTION_CODE_DENSITY);
} else {
dc->next_pc = dc->pc + 3;
b2 = cpu_ldub_code(cpu_single_env, dc->pc + 2);
}
switch (OP0) {
case 0: /*QRST*/
switch (OP1) {
case 0: /*RST0*/
switch (OP2) {
case 0: /*ST0*/
if ((RRR_R & 0xc) == 0x8) {
HAS_OPTION(XTENSA_OPTION_BOOLEAN);
}
switch (RRR_R) {
case 0: /*SNM0*/
switch (CALLX_M) {
case 0: /*ILL*/
gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
break;
case 1: /*reserved*/
RESERVED();
break;
case 2: /*JR*/
switch (CALLX_N) {
case 0: /*RET*/
case 2: /*JX*/
gen_window_check1(dc, CALLX_S);
gen_jump(dc, cpu_R[CALLX_S]);
break;
case 1: /*RETWw*/
HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
{
TCGv_i32 tmp = tcg_const_i32(dc->pc);
gen_advance_ccount(dc);
gen_helper_retw(tmp, cpu_env, tmp);
gen_jump(dc, tmp);
tcg_temp_free(tmp);
}
break;
case 3: /*reserved*/
RESERVED();
break;
}
break;
case 3: /*CALLX*/
gen_window_check2(dc, CALLX_S, CALLX_N << 2);
switch (CALLX_N) {
case 0: /*CALLX0*/
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_mov_i32(tmp, cpu_R[CALLX_S]);
tcg_gen_movi_i32(cpu_R[0], dc->next_pc);
gen_jump(dc, tmp);
tcg_temp_free(tmp);
}
break;
case 1: /*CALLX4w*/
case 2: /*CALLX8w*/
case 3: /*CALLX12w*/
HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_mov_i32(tmp, cpu_R[CALLX_S]);
gen_callw(dc, CALLX_N, tmp);
tcg_temp_free(tmp);
}
break;
}
break;
}
break;
case 1: /*MOVSPw*/
HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
gen_window_check2(dc, RRR_T, RRR_S);
{
TCGv_i32 pc = tcg_const_i32(dc->pc);
gen_advance_ccount(dc);
gen_helper_movsp(cpu_env, pc);
tcg_gen_mov_i32(cpu_R[RRR_T], cpu_R[RRR_S]);
tcg_temp_free(pc);
}
break;
case 2: /*SYNC*/
switch (RRR_T) {
case 0: /*ISYNC*/
break;
case 1: /*RSYNC*/
break;
case 2: /*ESYNC*/
break;
case 3: /*DSYNC*/
break;
case 8: /*EXCW*/
HAS_OPTION(XTENSA_OPTION_EXCEPTION);
break;
case 12: /*MEMW*/
break;
case 13: /*EXTW*/
break;
case 15: /*NOP*/
break;
default: /*reserved*/
RESERVED();
break;
}
break;
case 3: /*RFEIx*/
switch (RRR_T) {
case 0: /*RFETx*/
HAS_OPTION(XTENSA_OPTION_EXCEPTION);
switch (RRR_S) {
case 0: /*RFEx*/
gen_check_privilege(dc);
tcg_gen_andi_i32(cpu_SR[PS], cpu_SR[PS], ~PS_EXCM);
gen_helper_check_interrupts(cpu_env);
gen_jump(dc, cpu_SR[EPC1]);
break;
case 1: /*RFUEx*/
RESERVED();
break;
case 2: /*RFDEx*/
gen_check_privilege(dc);
gen_jump(dc, cpu_SR[
dc->config->ndepc ? DEPC : EPC1]);
break;
case 4: /*RFWOw*/
case 5: /*RFWUw*/
HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
gen_check_privilege(dc);
{
TCGv_i32 tmp = tcg_const_i32(1);
tcg_gen_andi_i32(
cpu_SR[PS], cpu_SR[PS], ~PS_EXCM);
tcg_gen_shl_i32(tmp, tmp, cpu_SR[WINDOW_BASE]);
if (RRR_S == 4) {
tcg_gen_andc_i32(cpu_SR[WINDOW_START],
cpu_SR[WINDOW_START], tmp);
} else {
tcg_gen_or_i32(cpu_SR[WINDOW_START],
cpu_SR[WINDOW_START], tmp);
}
gen_helper_restore_owb(cpu_env);
gen_helper_check_interrupts(cpu_env);
gen_jump(dc, cpu_SR[EPC1]);
tcg_temp_free(tmp);
}
break;
default: /*reserved*/
RESERVED();
break;
}
break;
case 1: /*RFIx*/
HAS_OPTION(XTENSA_OPTION_HIGH_PRIORITY_INTERRUPT);
if (RRR_S >= 2 && RRR_S <= dc->config->nlevel) {
gen_check_privilege(dc);
tcg_gen_mov_i32(cpu_SR[PS],
cpu_SR[EPS2 + RRR_S - 2]);
gen_helper_check_interrupts(cpu_env);
gen_jump(dc, cpu_SR[EPC1 + RRR_S - 1]);
} else {
qemu_log("RFI %d is illegal\n", RRR_S);
gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
}
break;
case 2: /*RFME*/
TBD();
break;
default: /*reserved*/
RESERVED();
break;
}
break;
case 4: /*BREAKx*/
HAS_OPTION(XTENSA_OPTION_DEBUG);
if (dc->debug) {
gen_debug_exception(dc, DEBUGCAUSE_BI);
}
break;
case 5: /*SYSCALLx*/
HAS_OPTION(XTENSA_OPTION_EXCEPTION);
switch (RRR_S) {
case 0: /*SYSCALLx*/
gen_exception_cause(dc, SYSCALL_CAUSE);
break;
case 1: /*SIMCALL*/
if (semihosting_enabled) {
gen_check_privilege(dc);
gen_helper_simcall(cpu_env);
} else {
qemu_log("SIMCALL but semihosting is disabled\n");
gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
}
break;
default:
RESERVED();
break;
}
break;
case 6: /*RSILx*/
HAS_OPTION(XTENSA_OPTION_INTERRUPT);
gen_check_privilege(dc);
gen_window_check1(dc, RRR_T);
tcg_gen_mov_i32(cpu_R[RRR_T], cpu_SR[PS]);
tcg_gen_andi_i32(cpu_SR[PS], cpu_SR[PS], ~PS_INTLEVEL);
tcg_gen_ori_i32(cpu_SR[PS], cpu_SR[PS], RRR_S);
gen_helper_check_interrupts(cpu_env);
gen_jumpi_check_loop_end(dc, 0);
break;
case 7: /*WAITIx*/
HAS_OPTION(XTENSA_OPTION_INTERRUPT);
gen_check_privilege(dc);
gen_waiti(dc, RRR_S);
break;
case 8: /*ANY4p*/
case 9: /*ALL4p*/
case 10: /*ANY8p*/
case 11: /*ALL8p*/
HAS_OPTION(XTENSA_OPTION_BOOLEAN);
{
const unsigned shift = (RRR_R & 2) ? 8 : 4;
TCGv_i32 mask = tcg_const_i32(
((1 << shift) - 1) << RRR_S);
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_and_i32(tmp, cpu_SR[BR], mask);
if (RRR_R & 1) { /*ALL*/
tcg_gen_addi_i32(tmp, tmp, 1 << RRR_S);
} else { /*ANY*/
tcg_gen_add_i32(tmp, tmp, mask);
}
tcg_gen_shri_i32(tmp, tmp, RRR_S + shift);
tcg_gen_deposit_i32(cpu_SR[BR], cpu_SR[BR],
tmp, RRR_T, 1);
tcg_temp_free(mask);
tcg_temp_free(tmp);
}
break;
default: /*reserved*/
RESERVED();
break;
}
break;
case 1: /*AND*/
gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
tcg_gen_and_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
break;
case 2: /*OR*/
gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
tcg_gen_or_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
break;
case 3: /*XOR*/
gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
tcg_gen_xor_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
break;
case 4: /*ST1*/
switch (RRR_R) {
case 0: /*SSR*/
gen_window_check1(dc, RRR_S);
gen_right_shift_sar(dc, cpu_R[RRR_S]);
break;
case 1: /*SSL*/
gen_window_check1(dc, RRR_S);
gen_left_shift_sar(dc, cpu_R[RRR_S]);
break;
case 2: /*SSA8L*/
gen_window_check1(dc, RRR_S);
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_shli_i32(tmp, cpu_R[RRR_S], 3);
gen_right_shift_sar(dc, tmp);
tcg_temp_free(tmp);
}
break;
case 3: /*SSA8B*/
gen_window_check1(dc, RRR_S);
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_shli_i32(tmp, cpu_R[RRR_S], 3);
gen_left_shift_sar(dc, tmp);
tcg_temp_free(tmp);
}
break;
case 4: /*SSAI*/
{
TCGv_i32 tmp = tcg_const_i32(
RRR_S | ((RRR_T & 1) << 4));
gen_right_shift_sar(dc, tmp);
tcg_temp_free(tmp);
}
break;
case 6: /*RER*/
TBD();
break;
case 7: /*WER*/
TBD();
break;
case 8: /*ROTWw*/
HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
gen_check_privilege(dc);
{
TCGv_i32 tmp = tcg_const_i32(
RRR_T | ((RRR_T & 8) ? 0xfffffff0 : 0));
gen_helper_rotw(cpu_env, tmp);
tcg_temp_free(tmp);
reset_used_window(dc);
}
break;
case 14: /*NSAu*/
HAS_OPTION(XTENSA_OPTION_MISC_OP_NSA);
gen_window_check2(dc, RRR_S, RRR_T);
gen_helper_nsa(cpu_R[RRR_T], cpu_R[RRR_S]);
break;
case 15: /*NSAUu*/
HAS_OPTION(XTENSA_OPTION_MISC_OP_NSA);
gen_window_check2(dc, RRR_S, RRR_T);
gen_helper_nsau(cpu_R[RRR_T], cpu_R[RRR_S]);
break;
default: /*reserved*/
RESERVED();
break;
}
break;
case 5: /*TLB*/
HAS_OPTION_BITS(
XTENSA_OPTION_BIT(XTENSA_OPTION_MMU) |
XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_PROTECTION) |
XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_TRANSLATION));
gen_check_privilege(dc);
gen_window_check2(dc, RRR_S, RRR_T);
{
TCGv_i32 dtlb = tcg_const_i32((RRR_R & 8) != 0);
switch (RRR_R & 7) {
case 3: /*RITLB0*/ /*RDTLB0*/
gen_helper_rtlb0(cpu_R[RRR_T],
cpu_env, cpu_R[RRR_S], dtlb);
break;
case 4: /*IITLB*/ /*IDTLB*/
gen_helper_itlb(cpu_env, cpu_R[RRR_S], dtlb);
/* This could change memory mapping, so exit tb */
gen_jumpi_check_loop_end(dc, -1);
break;
case 5: /*PITLB*/ /*PDTLB*/
tcg_gen_movi_i32(cpu_pc, dc->pc);
gen_helper_ptlb(cpu_R[RRR_T],
cpu_env, cpu_R[RRR_S], dtlb);
break;
case 6: /*WITLB*/ /*WDTLB*/
gen_helper_wtlb(
cpu_env, cpu_R[RRR_T], cpu_R[RRR_S], dtlb);
/* This could change memory mapping, so exit tb */
gen_jumpi_check_loop_end(dc, -1);
break;
case 7: /*RITLB1*/ /*RDTLB1*/
gen_helper_rtlb1(cpu_R[RRR_T],
cpu_env, cpu_R[RRR_S], dtlb);
break;
default:
tcg_temp_free(dtlb);
RESERVED();
break;
}
tcg_temp_free(dtlb);
}
break;
case 6: /*RT0*/
gen_window_check2(dc, RRR_R, RRR_T);
switch (RRR_S) {
case 0: /*NEG*/
tcg_gen_neg_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
break;
case 1: /*ABS*/
{
int label = gen_new_label();
tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
tcg_gen_brcondi_i32(
TCG_COND_GE, cpu_R[RRR_R], 0, label);
tcg_gen_neg_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
gen_set_label(label);
}
break;
default: /*reserved*/
RESERVED();
break;
}
break;
case 7: /*reserved*/
RESERVED();
break;
case 8: /*ADD*/
gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
tcg_gen_add_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
break;
case 9: /*ADD**/
case 10:
case 11:
gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_shli_i32(tmp, cpu_R[RRR_S], OP2 - 8);
tcg_gen_add_i32(cpu_R[RRR_R], tmp, cpu_R[RRR_T]);
tcg_temp_free(tmp);
}
break;
case 12: /*SUB*/
gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
tcg_gen_sub_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
break;
case 13: /*SUB**/
case 14:
case 15:
gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_shli_i32(tmp, cpu_R[RRR_S], OP2 - 12);
tcg_gen_sub_i32(cpu_R[RRR_R], tmp, cpu_R[RRR_T]);
tcg_temp_free(tmp);
}
break;
}
break;
case 1: /*RST1*/
switch (OP2) {
case 0: /*SLLI*/
case 1:
gen_window_check2(dc, RRR_R, RRR_S);
tcg_gen_shli_i32(cpu_R[RRR_R], cpu_R[RRR_S],
32 - (RRR_T | ((OP2 & 1) << 4)));
break;
case 2: /*SRAI*/
case 3:
gen_window_check2(dc, RRR_R, RRR_T);
tcg_gen_sari_i32(cpu_R[RRR_R], cpu_R[RRR_T],
RRR_S | ((OP2 & 1) << 4));
break;
case 4: /*SRLI*/
gen_window_check2(dc, RRR_R, RRR_T);
tcg_gen_shri_i32(cpu_R[RRR_R], cpu_R[RRR_T], RRR_S);
break;
case 6: /*XSR*/
{
TCGv_i32 tmp = tcg_temp_new_i32();
if (RSR_SR >= 64) {
gen_check_privilege(dc);
}
gen_window_check1(dc, RRR_T);
tcg_gen_mov_i32(tmp, cpu_R[RRR_T]);
gen_rsr(dc, cpu_R[RRR_T], RSR_SR);
gen_wsr(dc, RSR_SR, tmp);
tcg_temp_free(tmp);
if (!sregnames[RSR_SR]) {
TBD();
}
}
break;
/*
* Note: 64 bit ops are used here solely because SAR values
* have range 0..63
*/
#define gen_shift_reg(cmd, reg) do { \
TCGv_i64 tmp = tcg_temp_new_i64(); \
tcg_gen_extu_i32_i64(tmp, reg); \
tcg_gen_##cmd##_i64(v, v, tmp); \
tcg_gen_trunc_i64_i32(cpu_R[RRR_R], v); \
tcg_temp_free_i64(v); \
tcg_temp_free_i64(tmp); \
} while (0)
#define gen_shift(cmd) gen_shift_reg(cmd, cpu_SR[SAR])
case 8: /*SRC*/
gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
{
TCGv_i64 v = tcg_temp_new_i64();
tcg_gen_concat_i32_i64(v, cpu_R[RRR_T], cpu_R[RRR_S]);
gen_shift(shr);
}
break;
case 9: /*SRL*/
gen_window_check2(dc, RRR_R, RRR_T);
if (dc->sar_5bit) {
tcg_gen_shr_i32(cpu_R[RRR_R], cpu_R[RRR_T], cpu_SR[SAR]);
} else {
TCGv_i64 v = tcg_temp_new_i64();
tcg_gen_extu_i32_i64(v, cpu_R[RRR_T]);
gen_shift(shr);
}
break;
case 10: /*SLL*/
gen_window_check2(dc, RRR_R, RRR_S);
if (dc->sar_m32_5bit) {
tcg_gen_shl_i32(cpu_R[RRR_R], cpu_R[RRR_S], dc->sar_m32);
} else {
TCGv_i64 v = tcg_temp_new_i64();
TCGv_i32 s = tcg_const_i32(32);
tcg_gen_sub_i32(s, s, cpu_SR[SAR]);
tcg_gen_andi_i32(s, s, 0x3f);
tcg_gen_extu_i32_i64(v, cpu_R[RRR_S]);
gen_shift_reg(shl, s);
tcg_temp_free(s);
}
break;
case 11: /*SRA*/
gen_window_check2(dc, RRR_R, RRR_T);
if (dc->sar_5bit) {
tcg_gen_sar_i32(cpu_R[RRR_R], cpu_R[RRR_T], cpu_SR[SAR]);
} else {
TCGv_i64 v = tcg_temp_new_i64();
tcg_gen_ext_i32_i64(v, cpu_R[RRR_T]);
gen_shift(sar);
}
break;
#undef gen_shift
#undef gen_shift_reg
case 12: /*MUL16U*/
HAS_OPTION(XTENSA_OPTION_16_BIT_IMUL);
gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
{
TCGv_i32 v1 = tcg_temp_new_i32();
TCGv_i32 v2 = tcg_temp_new_i32();
tcg_gen_ext16u_i32(v1, cpu_R[RRR_S]);
tcg_gen_ext16u_i32(v2, cpu_R[RRR_T]);
tcg_gen_mul_i32(cpu_R[RRR_R], v1, v2);
tcg_temp_free(v2);
tcg_temp_free(v1);
}
break;
case 13: /*MUL16S*/
HAS_OPTION(XTENSA_OPTION_16_BIT_IMUL);
gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
{
TCGv_i32 v1 = tcg_temp_new_i32();
TCGv_i32 v2 = tcg_temp_new_i32();
tcg_gen_ext16s_i32(v1, cpu_R[RRR_S]);
tcg_gen_ext16s_i32(v2, cpu_R[RRR_T]);
tcg_gen_mul_i32(cpu_R[RRR_R], v1, v2);
tcg_temp_free(v2);
tcg_temp_free(v1);
}
break;
default: /*reserved*/
RESERVED();
break;
}
break;
case 2: /*RST2*/
if (OP2 >= 8) {
gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
}
if (OP2 >= 12) {
HAS_OPTION(XTENSA_OPTION_32_BIT_IDIV);
int label = gen_new_label();
tcg_gen_brcondi_i32(TCG_COND_NE, cpu_R[RRR_T], 0, label);
gen_exception_cause(dc, INTEGER_DIVIDE_BY_ZERO_CAUSE);
gen_set_label(label);
}
switch (OP2) {
#define BOOLEAN_LOGIC(fn, r, s, t) \
do { \
HAS_OPTION(XTENSA_OPTION_BOOLEAN); \
TCGv_i32 tmp1 = tcg_temp_new_i32(); \
TCGv_i32 tmp2 = tcg_temp_new_i32(); \
\
tcg_gen_shri_i32(tmp1, cpu_SR[BR], s); \
tcg_gen_shri_i32(tmp2, cpu_SR[BR], t); \
tcg_gen_##fn##_i32(tmp1, tmp1, tmp2); \
tcg_gen_deposit_i32(cpu_SR[BR], cpu_SR[BR], tmp1, r, 1); \
tcg_temp_free(tmp1); \
tcg_temp_free(tmp2); \
} while (0)
case 0: /*ANDBp*/
BOOLEAN_LOGIC(and, RRR_R, RRR_S, RRR_T);
break;
case 1: /*ANDBCp*/
BOOLEAN_LOGIC(andc, RRR_R, RRR_S, RRR_T);
break;
case 2: /*ORBp*/
BOOLEAN_LOGIC(or, RRR_R, RRR_S, RRR_T);
break;
case 3: /*ORBCp*/
BOOLEAN_LOGIC(orc, RRR_R, RRR_S, RRR_T);
break;
case 4: /*XORBp*/
BOOLEAN_LOGIC(xor, RRR_R, RRR_S, RRR_T);
break;
#undef BOOLEAN_LOGIC
case 8: /*MULLi*/
HAS_OPTION(XTENSA_OPTION_32_BIT_IMUL);
tcg_gen_mul_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
break;
case 10: /*MULUHi*/
case 11: /*MULSHi*/
HAS_OPTION(XTENSA_OPTION_32_BIT_IMUL_HIGH);
{
TCGv_i64 r = tcg_temp_new_i64();
TCGv_i64 s = tcg_temp_new_i64();
TCGv_i64 t = tcg_temp_new_i64();
if (OP2 == 10) {
tcg_gen_extu_i32_i64(s, cpu_R[RRR_S]);
tcg_gen_extu_i32_i64(t, cpu_R[RRR_T]);
} else {
tcg_gen_ext_i32_i64(s, cpu_R[RRR_S]);
tcg_gen_ext_i32_i64(t, cpu_R[RRR_T]);
}
tcg_gen_mul_i64(r, s, t);
tcg_gen_shri_i64(r, r, 32);
tcg_gen_trunc_i64_i32(cpu_R[RRR_R], r);
tcg_temp_free_i64(r);
tcg_temp_free_i64(s);
tcg_temp_free_i64(t);
}
break;
case 12: /*QUOUi*/
tcg_gen_divu_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
break;
case 13: /*QUOSi*/
case 15: /*REMSi*/
{
int label1 = gen_new_label();
int label2 = gen_new_label();
tcg_gen_brcondi_i32(TCG_COND_NE, cpu_R[RRR_S], 0x80000000,
label1);
tcg_gen_brcondi_i32(TCG_COND_NE, cpu_R[RRR_T], 0xffffffff,
label1);
tcg_gen_movi_i32(cpu_R[RRR_R],
OP2 == 13 ? 0x80000000 : 0);
tcg_gen_br(label2);
gen_set_label(label1);
if (OP2 == 13) {
tcg_gen_div_i32(cpu_R[RRR_R],
cpu_R[RRR_S], cpu_R[RRR_T]);
} else {
tcg_gen_rem_i32(cpu_R[RRR_R],
cpu_R[RRR_S], cpu_R[RRR_T]);
}
gen_set_label(label2);
}
break;
case 14: /*REMUi*/
tcg_gen_remu_i32(cpu_R[RRR_R], cpu_R[RRR_S], cpu_R[RRR_T]);
break;
default: /*reserved*/
RESERVED();
break;
}
break;
case 3: /*RST3*/
switch (OP2) {
case 0: /*RSR*/
if (RSR_SR >= 64) {
gen_check_privilege(dc);
}
gen_window_check1(dc, RRR_T);
gen_rsr(dc, cpu_R[RRR_T], RSR_SR);
if (!sregnames[RSR_SR]) {
TBD();
}
break;
case 1: /*WSR*/
if (RSR_SR >= 64) {
gen_check_privilege(dc);
}
gen_window_check1(dc, RRR_T);
gen_wsr(dc, RSR_SR, cpu_R[RRR_T]);
if (!sregnames[RSR_SR]) {
TBD();
}
break;
case 2: /*SEXTu*/
HAS_OPTION(XTENSA_OPTION_MISC_OP_SEXT);
gen_window_check2(dc, RRR_R, RRR_S);
{
int shift = 24 - RRR_T;
if (shift == 24) {
tcg_gen_ext8s_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
} else if (shift == 16) {
tcg_gen_ext16s_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
} else {
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_shli_i32(tmp, cpu_R[RRR_S], shift);
tcg_gen_sari_i32(cpu_R[RRR_R], tmp, shift);
tcg_temp_free(tmp);
}
}
break;
case 3: /*CLAMPSu*/
HAS_OPTION(XTENSA_OPTION_MISC_OP_CLAMPS);
gen_window_check2(dc, RRR_R, RRR_S);
{
TCGv_i32 tmp1 = tcg_temp_new_i32();
TCGv_i32 tmp2 = tcg_temp_new_i32();
int label = gen_new_label();
tcg_gen_sari_i32(tmp1, cpu_R[RRR_S], 24 - RRR_T);
tcg_gen_xor_i32(tmp2, tmp1, cpu_R[RRR_S]);
tcg_gen_andi_i32(tmp2, tmp2, 0xffffffff << (RRR_T + 7));
tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
tcg_gen_brcondi_i32(TCG_COND_EQ, tmp2, 0, label);
tcg_gen_sari_i32(tmp1, cpu_R[RRR_S], 31);
tcg_gen_xori_i32(cpu_R[RRR_R], tmp1,
0xffffffff >> (25 - RRR_T));
gen_set_label(label);
tcg_temp_free(tmp1);
tcg_temp_free(tmp2);
}
break;
case 4: /*MINu*/
case 5: /*MAXu*/
case 6: /*MINUu*/
case 7: /*MAXUu*/
HAS_OPTION(XTENSA_OPTION_MISC_OP_MINMAX);
gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
{
static const TCGCond cond[] = {
TCG_COND_LE,
TCG_COND_GE,
TCG_COND_LEU,
TCG_COND_GEU
};
int label = gen_new_label();
if (RRR_R != RRR_T) {
tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
tcg_gen_brcond_i32(cond[OP2 - 4],
cpu_R[RRR_S], cpu_R[RRR_T], label);
tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
} else {
tcg_gen_brcond_i32(cond[OP2 - 4],
cpu_R[RRR_T], cpu_R[RRR_S], label);
tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
}
gen_set_label(label);
}
break;
case 8: /*MOVEQZ*/
case 9: /*MOVNEZ*/
case 10: /*MOVLTZ*/
case 11: /*MOVGEZ*/
gen_window_check3(dc, RRR_R, RRR_S, RRR_T);
{
static const TCGCond cond[] = {
TCG_COND_NE,
TCG_COND_EQ,
TCG_COND_GE,
TCG_COND_LT
};
int label = gen_new_label();
tcg_gen_brcondi_i32(cond[OP2 - 8], cpu_R[RRR_T], 0, label);
tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
gen_set_label(label);
}
break;
case 12: /*MOVFp*/
case 13: /*MOVTp*/
HAS_OPTION(XTENSA_OPTION_BOOLEAN);
gen_window_check2(dc, RRR_R, RRR_S);
{
int label = gen_new_label();
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_andi_i32(tmp, cpu_SR[BR], 1 << RRR_T);
tcg_gen_brcondi_i32(
OP2 & 1 ? TCG_COND_EQ : TCG_COND_NE,
tmp, 0, label);
tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_S]);
gen_set_label(label);
tcg_temp_free(tmp);
}
break;
case 14: /*RUR*/
gen_window_check1(dc, RRR_R);
{
int st = (RRR_S << 4) + RRR_T;
if (uregnames[st]) {
tcg_gen_mov_i32(cpu_R[RRR_R], cpu_UR[st]);
} else {
qemu_log("RUR %d not implemented, ", st);
TBD();
}
}
break;
case 15: /*WUR*/
gen_window_check1(dc, RRR_T);
{
if (uregnames[RSR_SR]) {
tcg_gen_mov_i32(cpu_UR[RSR_SR], cpu_R[RRR_T]);
} else {
qemu_log("WUR %d not implemented, ", RSR_SR);
TBD();
}
}
break;
}
break;
case 4: /*EXTUI*/
case 5:
gen_window_check2(dc, RRR_R, RRR_T);
{
int shiftimm = RRR_S | (OP1 << 4);
int maskimm = (1 << (OP2 + 1)) - 1;
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_shri_i32(tmp, cpu_R[RRR_T], shiftimm);
tcg_gen_andi_i32(cpu_R[RRR_R], tmp, maskimm);
tcg_temp_free(tmp);
}
break;
case 6: /*CUST0*/
RESERVED();
break;
case 7: /*CUST1*/
RESERVED();
break;
case 8: /*LSCXp*/
HAS_OPTION(XTENSA_OPTION_COPROCESSOR);
TBD();
break;
case 9: /*LSC4*/
gen_window_check2(dc, RRR_S, RRR_T);
switch (OP2) {
case 0: /*L32E*/
HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
gen_check_privilege(dc);
{
TCGv_i32 addr = tcg_temp_new_i32();
tcg_gen_addi_i32(addr, cpu_R[RRR_S],
(0xffffffc0 | (RRR_R << 2)));
tcg_gen_qemu_ld32u(cpu_R[RRR_T], addr, dc->ring);
tcg_temp_free(addr);
}
break;
case 4: /*S32E*/
HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
gen_check_privilege(dc);
{
TCGv_i32 addr = tcg_temp_new_i32();
tcg_gen_addi_i32(addr, cpu_R[RRR_S],
(0xffffffc0 | (RRR_R << 2)));
tcg_gen_qemu_st32(cpu_R[RRR_T], addr, dc->ring);
tcg_temp_free(addr);
}
break;
default:
RESERVED();
break;
}
break;
case 10: /*FP0*/
HAS_OPTION(XTENSA_OPTION_FP_COPROCESSOR);
TBD();
break;
case 11: /*FP1*/
HAS_OPTION(XTENSA_OPTION_FP_COPROCESSOR);
TBD();
break;
default: /*reserved*/
RESERVED();
break;
}
break;
case 1: /*L32R*/
gen_window_check1(dc, RRR_T);
{
TCGv_i32 tmp = tcg_const_i32(
((dc->tb->flags & XTENSA_TBFLAG_LITBASE) ?
0 : ((dc->pc + 3) & ~3)) +
(0xfffc0000 | (RI16_IMM16 << 2)));
if (dc->tb->flags & XTENSA_TBFLAG_LITBASE) {
tcg_gen_add_i32(tmp, tmp, dc->litbase);
}
tcg_gen_qemu_ld32u(cpu_R[RRR_T], tmp, dc->cring);
tcg_temp_free(tmp);
}
break;
case 2: /*LSAI*/
#define gen_load_store(type, shift) do { \
TCGv_i32 addr = tcg_temp_new_i32(); \
gen_window_check2(dc, RRI8_S, RRI8_T); \
tcg_gen_addi_i32(addr, cpu_R[RRI8_S], RRI8_IMM8 << shift); \
if (shift) { \
gen_load_store_alignment(dc, shift, addr, false); \
} \
tcg_gen_qemu_##type(cpu_R[RRI8_T], addr, dc->cring); \
tcg_temp_free(addr); \
} while (0)
switch (RRI8_R) {
case 0: /*L8UI*/
gen_load_store(ld8u, 0);
break;
case 1: /*L16UI*/
gen_load_store(ld16u, 1);
break;
case 2: /*L32I*/
gen_load_store(ld32u, 2);
break;
case 4: /*S8I*/
gen_load_store(st8, 0);
break;
case 5: /*S16I*/
gen_load_store(st16, 1);
break;
case 6: /*S32I*/
gen_load_store(st32, 2);
break;
case 7: /*CACHEc*/
if (RRI8_T < 8) {
HAS_OPTION(XTENSA_OPTION_DCACHE);
}
switch (RRI8_T) {
case 0: /*DPFRc*/
break;
case 1: /*DPFWc*/
break;
case 2: /*DPFROc*/
break;
case 3: /*DPFWOc*/
break;
case 4: /*DHWBc*/
break;
case 5: /*DHWBIc*/
break;
case 6: /*DHIc*/
break;
case 7: /*DIIc*/
break;
case 8: /*DCEc*/
switch (OP1) {
case 0: /*DPFLl*/
HAS_OPTION(XTENSA_OPTION_DCACHE_INDEX_LOCK);
break;
case 2: /*DHUl*/
HAS_OPTION(XTENSA_OPTION_DCACHE_INDEX_LOCK);
break;
case 3: /*DIUl*/
HAS_OPTION(XTENSA_OPTION_DCACHE_INDEX_LOCK);
break;
case 4: /*DIWBc*/
HAS_OPTION(XTENSA_OPTION_DCACHE);
break;
case 5: /*DIWBIc*/
HAS_OPTION(XTENSA_OPTION_DCACHE);
break;
default: /*reserved*/
RESERVED();
break;
}
break;
case 12: /*IPFc*/
HAS_OPTION(XTENSA_OPTION_ICACHE);
break;
case 13: /*ICEc*/
switch (OP1) {
case 0: /*IPFLl*/
HAS_OPTION(XTENSA_OPTION_ICACHE_INDEX_LOCK);
break;
case 2: /*IHUl*/
HAS_OPTION(XTENSA_OPTION_ICACHE_INDEX_LOCK);
break;
case 3: /*IIUl*/
HAS_OPTION(XTENSA_OPTION_ICACHE_INDEX_LOCK);
break;
default: /*reserved*/
RESERVED();
break;
}
break;
case 14: /*IHIc*/
HAS_OPTION(XTENSA_OPTION_ICACHE);
break;
case 15: /*IIIc*/
HAS_OPTION(XTENSA_OPTION_ICACHE);
break;
default: /*reserved*/
RESERVED();
break;
}
break;
case 9: /*L16SI*/
gen_load_store(ld16s, 1);
break;
#undef gen_load_store
case 10: /*MOVI*/
gen_window_check1(dc, RRI8_T);
tcg_gen_movi_i32(cpu_R[RRI8_T],
RRI8_IMM8 | (RRI8_S << 8) |
((RRI8_S & 0x8) ? 0xfffff000 : 0));
break;
#define gen_load_store_no_hw_align(type) do { \
TCGv_i32 addr = tcg_temp_local_new_i32(); \
gen_window_check2(dc, RRI8_S, RRI8_T); \
tcg_gen_addi_i32(addr, cpu_R[RRI8_S], RRI8_IMM8 << 2); \
gen_load_store_alignment(dc, 2, addr, true); \
tcg_gen_qemu_##type(cpu_R[RRI8_T], addr, dc->cring); \
tcg_temp_free(addr); \
} while (0)
case 11: /*L32AIy*/
HAS_OPTION(XTENSA_OPTION_MP_SYNCHRO);
gen_load_store_no_hw_align(ld32u); /*TODO acquire?*/
break;
case 12: /*ADDI*/
gen_window_check2(dc, RRI8_S, RRI8_T);
tcg_gen_addi_i32(cpu_R[RRI8_T], cpu_R[RRI8_S], RRI8_IMM8_SE);
break;
case 13: /*ADDMI*/
gen_window_check2(dc, RRI8_S, RRI8_T);
tcg_gen_addi_i32(cpu_R[RRI8_T], cpu_R[RRI8_S], RRI8_IMM8_SE << 8);
break;
case 14: /*S32C1Iy*/
HAS_OPTION(XTENSA_OPTION_CONDITIONAL_STORE);
gen_window_check2(dc, RRI8_S, RRI8_T);
{
int label = gen_new_label();
TCGv_i32 tmp = tcg_temp_local_new_i32();
TCGv_i32 addr = tcg_temp_local_new_i32();
tcg_gen_mov_i32(tmp, cpu_R[RRI8_T]);
tcg_gen_addi_i32(addr, cpu_R[RRI8_S], RRI8_IMM8 << 2);
gen_load_store_alignment(dc, 2, addr, true);
tcg_gen_qemu_ld32u(cpu_R[RRI8_T], addr, dc->cring);
tcg_gen_brcond_i32(TCG_COND_NE, cpu_R[RRI8_T],
cpu_SR[SCOMPARE1], label);
tcg_gen_qemu_st32(tmp, addr, dc->cring);
gen_set_label(label);
tcg_temp_free(addr);
tcg_temp_free(tmp);
}
break;
case 15: /*S32RIy*/
HAS_OPTION(XTENSA_OPTION_MP_SYNCHRO);
gen_load_store_no_hw_align(st32); /*TODO release?*/
break;
#undef gen_load_store_no_hw_align
default: /*reserved*/
RESERVED();
break;
}
break;
case 3: /*LSCIp*/
HAS_OPTION(XTENSA_OPTION_COPROCESSOR);
TBD();
break;
case 4: /*MAC16d*/
HAS_OPTION(XTENSA_OPTION_MAC16);
{
enum {
MAC16_UMUL = 0x0,
MAC16_MUL = 0x4,
MAC16_MULA = 0x8,
MAC16_MULS = 0xc,
MAC16_NONE = 0xf,
} op = OP1 & 0xc;
bool is_m1_sr = (OP2 & 0x3) == 2;
bool is_m2_sr = (OP2 & 0xc) == 0;
uint32_t ld_offset = 0;
if (OP2 > 9) {
RESERVED();
}
switch (OP2 & 2) {
case 0: /*MACI?/MACC?*/
is_m1_sr = true;
ld_offset = (OP2 & 1) ? -4 : 4;
if (OP2 >= 8) { /*MACI/MACC*/
if (OP1 == 0) { /*LDINC/LDDEC*/
op = MAC16_NONE;
} else {
RESERVED();
}
} else if (op != MAC16_MULA) { /*MULA.*.*.LDINC/LDDEC*/
RESERVED();
}
break;
case 2: /*MACD?/MACA?*/
if (op == MAC16_UMUL && OP2 != 7) { /*UMUL only in MACAA*/
RESERVED();
}
break;
}
if (op != MAC16_NONE) {
if (!is_m1_sr) {
gen_window_check1(dc, RRR_S);
}
if (!is_m2_sr) {
gen_window_check1(dc, RRR_T);
}
}
{
TCGv_i32 vaddr = tcg_temp_new_i32();
TCGv_i32 mem32 = tcg_temp_new_i32();
if (ld_offset) {
gen_window_check1(dc, RRR_S);
tcg_gen_addi_i32(vaddr, cpu_R[RRR_S], ld_offset);
gen_load_store_alignment(dc, 2, vaddr, false);
tcg_gen_qemu_ld32u(mem32, vaddr, dc->cring);
}
if (op != MAC16_NONE) {
TCGv_i32 m1 = gen_mac16_m(
is_m1_sr ? cpu_SR[MR + RRR_X] : cpu_R[RRR_S],
OP1 & 1, op == MAC16_UMUL);
TCGv_i32 m2 = gen_mac16_m(
is_m2_sr ? cpu_SR[MR + 2 + RRR_Y] : cpu_R[RRR_T],
OP1 & 2, op == MAC16_UMUL);
if (op == MAC16_MUL || op == MAC16_UMUL) {
tcg_gen_mul_i32(cpu_SR[ACCLO], m1, m2);
if (op == MAC16_UMUL) {
tcg_gen_movi_i32(cpu_SR[ACCHI], 0);
} else {
tcg_gen_sari_i32(cpu_SR[ACCHI], cpu_SR[ACCLO], 31);
}
} else {
TCGv_i32 res = tcg_temp_new_i32();
TCGv_i64 res64 = tcg_temp_new_i64();
TCGv_i64 tmp = tcg_temp_new_i64();
tcg_gen_mul_i32(res, m1, m2);
tcg_gen_ext_i32_i64(res64, res);
tcg_gen_concat_i32_i64(tmp,
cpu_SR[ACCLO], cpu_SR[ACCHI]);
if (op == MAC16_MULA) {
tcg_gen_add_i64(tmp, tmp, res64);
} else {
tcg_gen_sub_i64(tmp, tmp, res64);
}
tcg_gen_trunc_i64_i32(cpu_SR[ACCLO], tmp);
tcg_gen_shri_i64(tmp, tmp, 32);
tcg_gen_trunc_i64_i32(cpu_SR[ACCHI], tmp);
tcg_gen_ext8s_i32(cpu_SR[ACCHI], cpu_SR[ACCHI]);
tcg_temp_free(res);
tcg_temp_free_i64(res64);
tcg_temp_free_i64(tmp);
}
tcg_temp_free(m1);
tcg_temp_free(m2);
}
if (ld_offset) {
tcg_gen_mov_i32(cpu_R[RRR_S], vaddr);
tcg_gen_mov_i32(cpu_SR[MR + RRR_W], mem32);
}
tcg_temp_free(vaddr);
tcg_temp_free(mem32);
}
}
break;
case 5: /*CALLN*/
switch (CALL_N) {
case 0: /*CALL0*/
tcg_gen_movi_i32(cpu_R[0], dc->next_pc);
gen_jumpi(dc, (dc->pc & ~3) + (CALL_OFFSET_SE << 2) + 4, 0);
break;
case 1: /*CALL4w*/
case 2: /*CALL8w*/
case 3: /*CALL12w*/
HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
gen_window_check1(dc, CALL_N << 2);
gen_callwi(dc, CALL_N,
(dc->pc & ~3) + (CALL_OFFSET_SE << 2) + 4, 0);
break;
}
break;
case 6: /*SI*/
switch (CALL_N) {
case 0: /*J*/
gen_jumpi(dc, dc->pc + 4 + CALL_OFFSET_SE, 0);
break;
case 1: /*BZ*/
gen_window_check1(dc, BRI12_S);
{
static const TCGCond cond[] = {
TCG_COND_EQ, /*BEQZ*/
TCG_COND_NE, /*BNEZ*/
TCG_COND_LT, /*BLTZ*/
TCG_COND_GE, /*BGEZ*/
};
gen_brcondi(dc, cond[BRI12_M & 3], cpu_R[BRI12_S], 0,
4 + BRI12_IMM12_SE);
}
break;
case 2: /*BI0*/
gen_window_check1(dc, BRI8_S);
{
static const TCGCond cond[] = {
TCG_COND_EQ, /*BEQI*/
TCG_COND_NE, /*BNEI*/
TCG_COND_LT, /*BLTI*/
TCG_COND_GE, /*BGEI*/
};
gen_brcondi(dc, cond[BRI8_M & 3],
cpu_R[BRI8_S], B4CONST[BRI8_R], 4 + BRI8_IMM8_SE);
}
break;
case 3: /*BI1*/
switch (BRI8_M) {
case 0: /*ENTRYw*/
HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
{
TCGv_i32 pc = tcg_const_i32(dc->pc);
TCGv_i32 s = tcg_const_i32(BRI12_S);
TCGv_i32 imm = tcg_const_i32(BRI12_IMM12);
gen_advance_ccount(dc);
gen_helper_entry(cpu_env, pc, s, imm);
tcg_temp_free(imm);
tcg_temp_free(s);
tcg_temp_free(pc);
reset_used_window(dc);
}
break;
case 1: /*B1*/
switch (BRI8_R) {
case 0: /*BFp*/
case 1: /*BTp*/
HAS_OPTION(XTENSA_OPTION_BOOLEAN);
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_andi_i32(tmp, cpu_SR[BR], 1 << RRI8_S);
gen_brcondi(dc,
BRI8_R == 1 ? TCG_COND_NE : TCG_COND_EQ,
tmp, 0, 4 + RRI8_IMM8_SE);
tcg_temp_free(tmp);
}
break;
case 8: /*LOOP*/
case 9: /*LOOPNEZ*/
case 10: /*LOOPGTZ*/
HAS_OPTION(XTENSA_OPTION_LOOP);
gen_window_check1(dc, RRI8_S);
{
uint32_t lend = dc->pc + RRI8_IMM8 + 4;
TCGv_i32 tmp = tcg_const_i32(lend);
tcg_gen_subi_i32(cpu_SR[LCOUNT], cpu_R[RRI8_S], 1);
tcg_gen_movi_i32(cpu_SR[LBEG], dc->next_pc);
gen_helper_wsr_lend(cpu_env, tmp);
tcg_temp_free(tmp);
if (BRI8_R > 8) {
int label = gen_new_label();
tcg_gen_brcondi_i32(
BRI8_R == 9 ? TCG_COND_NE : TCG_COND_GT,
cpu_R[RRI8_S], 0, label);
gen_jumpi(dc, lend, 1);
gen_set_label(label);
}
gen_jumpi(dc, dc->next_pc, 0);
}
break;
default: /*reserved*/
RESERVED();
break;
}
break;
case 2: /*BLTUI*/
case 3: /*BGEUI*/
gen_window_check1(dc, BRI8_S);
gen_brcondi(dc, BRI8_M == 2 ? TCG_COND_LTU : TCG_COND_GEU,
cpu_R[BRI8_S], B4CONSTU[BRI8_R], 4 + BRI8_IMM8_SE);
break;
}
break;
}
break;
case 7: /*B*/
{
TCGCond eq_ne = (RRI8_R & 8) ? TCG_COND_NE : TCG_COND_EQ;
switch (RRI8_R & 7) {
case 0: /*BNONE*/ /*BANY*/
gen_window_check2(dc, RRI8_S, RRI8_T);
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_and_i32(tmp, cpu_R[RRI8_S], cpu_R[RRI8_T]);
gen_brcondi(dc, eq_ne, tmp, 0, 4 + RRI8_IMM8_SE);
tcg_temp_free(tmp);
}
break;
case 1: /*BEQ*/ /*BNE*/
case 2: /*BLT*/ /*BGE*/
case 3: /*BLTU*/ /*BGEU*/
gen_window_check2(dc, RRI8_S, RRI8_T);
{
static const TCGCond cond[] = {
[1] = TCG_COND_EQ,
[2] = TCG_COND_LT,
[3] = TCG_COND_LTU,
[9] = TCG_COND_NE,
[10] = TCG_COND_GE,
[11] = TCG_COND_GEU,
};
gen_brcond(dc, cond[RRI8_R], cpu_R[RRI8_S], cpu_R[RRI8_T],
4 + RRI8_IMM8_SE);
}
break;
case 4: /*BALL*/ /*BNALL*/
gen_window_check2(dc, RRI8_S, RRI8_T);
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_and_i32(tmp, cpu_R[RRI8_S], cpu_R[RRI8_T]);
gen_brcond(dc, eq_ne, tmp, cpu_R[RRI8_T],
4 + RRI8_IMM8_SE);
tcg_temp_free(tmp);
}
break;
case 5: /*BBC*/ /*BBS*/
gen_window_check2(dc, RRI8_S, RRI8_T);
{
#ifdef TARGET_WORDS_BIGENDIAN
TCGv_i32 bit = tcg_const_i32(0x80000000);
#else
TCGv_i32 bit = tcg_const_i32(0x00000001);
#endif
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_andi_i32(tmp, cpu_R[RRI8_T], 0x1f);
#ifdef TARGET_WORDS_BIGENDIAN
tcg_gen_shr_i32(bit, bit, tmp);
#else
tcg_gen_shl_i32(bit, bit, tmp);
#endif
tcg_gen_and_i32(tmp, cpu_R[RRI8_S], bit);
gen_brcondi(dc, eq_ne, tmp, 0, 4 + RRI8_IMM8_SE);
tcg_temp_free(tmp);
tcg_temp_free(bit);
}
break;
case 6: /*BBCI*/ /*BBSI*/
case 7:
gen_window_check1(dc, RRI8_S);
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_andi_i32(tmp, cpu_R[RRI8_S],
#ifdef TARGET_WORDS_BIGENDIAN
0x80000000 >> (((RRI8_R & 1) << 4) | RRI8_T));
#else
0x00000001 << (((RRI8_R & 1) << 4) | RRI8_T));
#endif
gen_brcondi(dc, eq_ne, tmp, 0, 4 + RRI8_IMM8_SE);
tcg_temp_free(tmp);
}
break;
}
}
break;
#define gen_narrow_load_store(type) do { \
TCGv_i32 addr = tcg_temp_new_i32(); \
gen_window_check2(dc, RRRN_S, RRRN_T); \
tcg_gen_addi_i32(addr, cpu_R[RRRN_S], RRRN_R << 2); \
gen_load_store_alignment(dc, 2, addr, false); \
tcg_gen_qemu_##type(cpu_R[RRRN_T], addr, dc->cring); \
tcg_temp_free(addr); \
} while (0)
case 8: /*L32I.Nn*/
gen_narrow_load_store(ld32u);
break;
case 9: /*S32I.Nn*/
gen_narrow_load_store(st32);
break;
#undef gen_narrow_load_store
case 10: /*ADD.Nn*/
gen_window_check3(dc, RRRN_R, RRRN_S, RRRN_T);
tcg_gen_add_i32(cpu_R[RRRN_R], cpu_R[RRRN_S], cpu_R[RRRN_T]);
break;
case 11: /*ADDI.Nn*/
gen_window_check2(dc, RRRN_R, RRRN_S);
tcg_gen_addi_i32(cpu_R[RRRN_R], cpu_R[RRRN_S], RRRN_T ? RRRN_T : -1);
break;
case 12: /*ST2n*/
gen_window_check1(dc, RRRN_S);
if (RRRN_T < 8) { /*MOVI.Nn*/
tcg_gen_movi_i32(cpu_R[RRRN_S],
RRRN_R | (RRRN_T << 4) |
((RRRN_T & 6) == 6 ? 0xffffff80 : 0));
} else { /*BEQZ.Nn*/ /*BNEZ.Nn*/
TCGCond eq_ne = (RRRN_T & 4) ? TCG_COND_NE : TCG_COND_EQ;
gen_brcondi(dc, eq_ne, cpu_R[RRRN_S], 0,
4 + (RRRN_R | ((RRRN_T & 3) << 4)));
}
break;
case 13: /*ST3n*/
switch (RRRN_R) {
case 0: /*MOV.Nn*/
gen_window_check2(dc, RRRN_S, RRRN_T);
tcg_gen_mov_i32(cpu_R[RRRN_T], cpu_R[RRRN_S]);
break;
case 15: /*S3*/
switch (RRRN_T) {
case 0: /*RET.Nn*/
gen_jump(dc, cpu_R[0]);
break;
case 1: /*RETW.Nn*/
HAS_OPTION(XTENSA_OPTION_WINDOWED_REGISTER);
{
TCGv_i32 tmp = tcg_const_i32(dc->pc);
gen_advance_ccount(dc);
gen_helper_retw(tmp, cpu_env, tmp);
gen_jump(dc, tmp);
tcg_temp_free(tmp);
}
break;
case 2: /*BREAK.Nn*/
HAS_OPTION(XTENSA_OPTION_DEBUG);
if (dc->debug) {
gen_debug_exception(dc, DEBUGCAUSE_BN);
}
break;
case 3: /*NOP.Nn*/
break;
case 6: /*ILL.Nn*/
gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
break;
default: /*reserved*/
RESERVED();
break;
}
break;
default: /*reserved*/
RESERVED();
break;
}
break;
default: /*reserved*/
RESERVED();
break;
}
gen_check_loop_end(dc, 0);
dc->pc = dc->next_pc;
return;
invalid_opcode:
qemu_log("INVALID(pc = %08x)\n", dc->pc);
gen_exception_cause(dc, ILLEGAL_INSTRUCTION_CAUSE);
#undef HAS_OPTION
}
static void check_breakpoint(CPUXtensaState *env, DisasContext *dc)
{
CPUBreakpoint *bp;
if (unlikely(!QTAILQ_EMPTY(&env->breakpoints))) {
QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
if (bp->pc == dc->pc) {
tcg_gen_movi_i32(cpu_pc, dc->pc);
gen_exception(dc, EXCP_DEBUG);
dc->is_jmp = DISAS_UPDATE;
}
}
}
}
static void gen_ibreak_check(CPUXtensaState *env, DisasContext *dc)
{
unsigned i;
for (i = 0; i < dc->config->nibreak; ++i) {
if ((env->sregs[IBREAKENABLE] & (1 << i)) &&
env->sregs[IBREAKA + i] == dc->pc) {
gen_debug_exception(dc, DEBUGCAUSE_IB);
break;
}
}
}
static void gen_intermediate_code_internal(
CPUXtensaState *env, TranslationBlock *tb, int search_pc)
{
DisasContext dc;
int insn_count = 0;
int j, lj = -1;
uint16_t *gen_opc_end = gen_opc_buf + OPC_MAX_SIZE;
int max_insns = tb->cflags & CF_COUNT_MASK;
uint32_t pc_start = tb->pc;
uint32_t next_page_start =
(pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE;
if (max_insns == 0) {
max_insns = CF_COUNT_MASK;
}
dc.config = env->config;
dc.singlestep_enabled = env->singlestep_enabled;
dc.tb = tb;
dc.pc = pc_start;
dc.ring = tb->flags & XTENSA_TBFLAG_RING_MASK;
dc.cring = (tb->flags & XTENSA_TBFLAG_EXCM) ? 0 : dc.ring;
dc.lbeg = env->sregs[LBEG];
dc.lend = env->sregs[LEND];
dc.is_jmp = DISAS_NEXT;
dc.ccount_delta = 0;
dc.debug = tb->flags & XTENSA_TBFLAG_DEBUG;
dc.icount = tb->flags & XTENSA_TBFLAG_ICOUNT;
init_litbase(&dc);
init_sar_tracker(&dc);
reset_used_window(&dc);
if (dc.icount) {
dc.next_icount = tcg_temp_local_new_i32();
}
gen_icount_start();
if (env->singlestep_enabled && env->exception_taken) {
env->exception_taken = 0;
tcg_gen_movi_i32(cpu_pc, dc.pc);
gen_exception(&dc, EXCP_DEBUG);
}
do {
check_breakpoint(env, &dc);
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] = insn_count;
}
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP))) {
tcg_gen_debug_insn_start(dc.pc);
}
++dc.ccount_delta;
if (insn_count + 1 == max_insns && (tb->cflags & CF_LAST_IO)) {
gen_io_start();
}
if (dc.icount) {
int label = gen_new_label();
tcg_gen_addi_i32(dc.next_icount, cpu_SR[ICOUNT], 1);
tcg_gen_brcondi_i32(TCG_COND_NE, dc.next_icount, 0, label);
tcg_gen_mov_i32(dc.next_icount, cpu_SR[ICOUNT]);
if (dc.debug) {
gen_debug_exception(&dc, DEBUGCAUSE_IC);
}
gen_set_label(label);
}
if (dc.debug) {
gen_ibreak_check(env, &dc);
}
disas_xtensa_insn(&dc);
++insn_count;
if (dc.icount) {
tcg_gen_mov_i32(cpu_SR[ICOUNT], dc.next_icount);
}
if (env->singlestep_enabled) {
tcg_gen_movi_i32(cpu_pc, dc.pc);
gen_exception(&dc, EXCP_DEBUG);
break;
}
} while (dc.is_jmp == DISAS_NEXT &&
insn_count < max_insns &&
dc.pc < next_page_start &&
gen_opc_ptr < gen_opc_end);
reset_litbase(&dc);
reset_sar_tracker(&dc);
if (dc.icount) {
tcg_temp_free(dc.next_icount);
}
if (tb->cflags & CF_LAST_IO) {
gen_io_end();
}
if (dc.is_jmp == DISAS_NEXT) {
gen_jumpi(&dc, dc.pc, 0);
}
gen_icount_end(tb, insn_count);
*gen_opc_ptr = INDEX_op_end;
if (!search_pc) {
tb->size = dc.pc - pc_start;
tb->icount = insn_count;
}
}
void gen_intermediate_code(CPUXtensaState *env, TranslationBlock *tb)
{
gen_intermediate_code_internal(env, tb, 0);
}
void gen_intermediate_code_pc(CPUXtensaState *env, TranslationBlock *tb)
{
gen_intermediate_code_internal(env, tb, 1);
}
void cpu_dump_state(CPUXtensaState *env, FILE *f, fprintf_function cpu_fprintf,
int flags)
{
int i, j;
cpu_fprintf(f, "PC=%08x\n\n", env->pc);
for (i = j = 0; i < 256; ++i) {
if (sregnames[i]) {
cpu_fprintf(f, "%s=%08x%c", sregnames[i], env->sregs[i],
(j++ % 4) == 3 ? '\n' : ' ');
}
}
cpu_fprintf(f, (j % 4) == 0 ? "\n" : "\n\n");
for (i = j = 0; i < 256; ++i) {
if (uregnames[i]) {
cpu_fprintf(f, "%s=%08x%c", uregnames[i], env->uregs[i],
(j++ % 4) == 3 ? '\n' : ' ');
}
}
cpu_fprintf(f, (j % 4) == 0 ? "\n" : "\n\n");
for (i = 0; i < 16; ++i) {
cpu_fprintf(f, "A%02d=%08x%c", i, env->regs[i],
(i % 4) == 3 ? '\n' : ' ');
}
cpu_fprintf(f, "\n");
for (i = 0; i < env->config->nareg; ++i) {
cpu_fprintf(f, "AR%02d=%08x%c", i, env->phys_regs[i],
(i % 4) == 3 ? '\n' : ' ');
}
}
void restore_state_to_opc(CPUXtensaState *env, TranslationBlock *tb, int pc_pos)
{
env->pc = gen_opc_pc[pc_pos];
}
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