6b814719b4
This includes opcodes from disabled features and those marked reserved in the ISA. Also end TB on opcodes that definitely generate an exception: illegal instructions, syscall and privileged instructions. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2553 lines
79 KiB
C
2553 lines
79 KiB
C
/*
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* Xtensa ISA:
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* http://www.tensilica.com/products/literature-docs/documentation/xtensa-isa-databook.htm
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*
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* Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the Open Source and Linux Lab nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include "cpu.h"
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#include "exec-all.h"
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#include "disas.h"
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#include "tcg-op.h"
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#include "qemu-log.h"
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#include "sysemu.h"
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#include "helpers.h"
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#define GEN_HELPER 1
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#include "helpers.h"
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typedef struct DisasContext {
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const XtensaConfig *config;
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TranslationBlock *tb;
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uint32_t pc;
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uint32_t next_pc;
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int cring;
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int ring;
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uint32_t lbeg;
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uint32_t lend;
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TCGv_i32 litbase;
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int is_jmp;
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int singlestep_enabled;
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bool sar_5bit;
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bool sar_m32_5bit;
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bool sar_m32_allocated;
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TCGv_i32 sar_m32;
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uint32_t ccount_delta;
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unsigned used_window;
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} DisasContext;
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static TCGv_ptr cpu_env;
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static TCGv_i32 cpu_pc;
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static TCGv_i32 cpu_R[16];
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static TCGv_i32 cpu_SR[256];
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static TCGv_i32 cpu_UR[256];
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#include "gen-icount.h"
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static const char * const sregnames[256] = {
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[LBEG] = "LBEG",
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[LEND] = "LEND",
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[LCOUNT] = "LCOUNT",
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[SAR] = "SAR",
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[BR] = "BR",
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[LITBASE] = "LITBASE",
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[SCOMPARE1] = "SCOMPARE1",
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[ACCLO] = "ACCLO",
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[ACCHI] = "ACCHI",
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[MR] = "MR0",
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[MR + 1] = "MR1",
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[MR + 2] = "MR2",
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[MR + 3] = "MR3",
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[WINDOW_BASE] = "WINDOW_BASE",
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[WINDOW_START] = "WINDOW_START",
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[PTEVADDR] = "PTEVADDR",
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[RASID] = "RASID",
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[ITLBCFG] = "ITLBCFG",
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[DTLBCFG] = "DTLBCFG",
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[EPC1] = "EPC1",
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[EPC1 + 1] = "EPC2",
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[EPC1 + 2] = "EPC3",
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[EPC1 + 3] = "EPC4",
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[EPC1 + 4] = "EPC5",
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[EPC1 + 5] = "EPC6",
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[EPC1 + 6] = "EPC7",
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[DEPC] = "DEPC",
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[EPS2] = "EPS2",
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[EPS2 + 1] = "EPS3",
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[EPS2 + 2] = "EPS4",
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[EPS2 + 3] = "EPS5",
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[EPS2 + 4] = "EPS6",
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[EPS2 + 5] = "EPS7",
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[EXCSAVE1] = "EXCSAVE1",
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[EXCSAVE1 + 1] = "EXCSAVE2",
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[EXCSAVE1 + 2] = "EXCSAVE3",
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[EXCSAVE1 + 3] = "EXCSAVE4",
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[EXCSAVE1 + 4] = "EXCSAVE5",
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[EXCSAVE1 + 5] = "EXCSAVE6",
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[EXCSAVE1 + 6] = "EXCSAVE7",
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[CPENABLE] = "CPENABLE",
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[INTSET] = "INTSET",
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[INTCLEAR] = "INTCLEAR",
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[INTENABLE] = "INTENABLE",
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[PS] = "PS",
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[VECBASE] = "VECBASE",
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[EXCCAUSE] = "EXCCAUSE",
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[CCOUNT] = "CCOUNT",
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[PRID] = "PRID",
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[EXCVADDR] = "EXCVADDR",
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[CCOMPARE] = "CCOMPARE0",
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[CCOMPARE + 1] = "CCOMPARE1",
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[CCOMPARE + 2] = "CCOMPARE2",
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};
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static const char * const uregnames[256] = {
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[THREADPTR] = "THREADPTR",
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[FCR] = "FCR",
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[FSR] = "FSR",
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};
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void xtensa_translate_init(void)
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{
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static const char * const regnames[] = {
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"ar0", "ar1", "ar2", "ar3",
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"ar4", "ar5", "ar6", "ar7",
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"ar8", "ar9", "ar10", "ar11",
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"ar12", "ar13", "ar14", "ar15",
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};
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int i;
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cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env");
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cpu_pc = tcg_global_mem_new_i32(TCG_AREG0,
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offsetof(CPUState, pc), "pc");
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for (i = 0; i < 16; i++) {
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cpu_R[i] = tcg_global_mem_new_i32(TCG_AREG0,
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offsetof(CPUState, regs[i]),
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regnames[i]);
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}
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for (i = 0; i < 256; ++i) {
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if (sregnames[i]) {
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cpu_SR[i] = tcg_global_mem_new_i32(TCG_AREG0,
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offsetof(CPUState, sregs[i]),
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sregnames[i]);
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}
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}
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for (i = 0; i < 256; ++i) {
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if (uregnames[i]) {
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cpu_UR[i] = tcg_global_mem_new_i32(TCG_AREG0,
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offsetof(CPUState, uregs[i]),
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uregnames[i]);
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}
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}
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#define GEN_HELPER 2
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#include "helpers.h"
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}
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static inline bool option_bits_enabled(DisasContext *dc, uint64_t opt)
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{
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return xtensa_option_bits_enabled(dc->config, opt);
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}
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static inline bool option_enabled(DisasContext *dc, int opt)
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{
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return xtensa_option_enabled(dc->config, opt);
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}
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static void init_litbase(DisasContext *dc)
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{
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if (dc->tb->flags & XTENSA_TBFLAG_LITBASE) {
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dc->litbase = tcg_temp_local_new_i32();
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tcg_gen_andi_i32(dc->litbase, cpu_SR[LITBASE], 0xfffff000);
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}
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}
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static void reset_litbase(DisasContext *dc)
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{
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if (dc->tb->flags & XTENSA_TBFLAG_LITBASE) {
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tcg_temp_free(dc->litbase);
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}
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}
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static void init_sar_tracker(DisasContext *dc)
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{
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dc->sar_5bit = false;
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dc->sar_m32_5bit = false;
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dc->sar_m32_allocated = false;
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}
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static void reset_sar_tracker(DisasContext *dc)
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{
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if (dc->sar_m32_allocated) {
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tcg_temp_free(dc->sar_m32);
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}
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}
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static void gen_right_shift_sar(DisasContext *dc, TCGv_i32 sa)
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{
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tcg_gen_andi_i32(cpu_SR[SAR], sa, 0x1f);
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if (dc->sar_m32_5bit) {
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tcg_gen_discard_i32(dc->sar_m32);
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}
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dc->sar_5bit = true;
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dc->sar_m32_5bit = false;
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}
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static void gen_left_shift_sar(DisasContext *dc, TCGv_i32 sa)
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{
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TCGv_i32 tmp = tcg_const_i32(32);
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if (!dc->sar_m32_allocated) {
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dc->sar_m32 = tcg_temp_local_new_i32();
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dc->sar_m32_allocated = true;
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}
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tcg_gen_andi_i32(dc->sar_m32, sa, 0x1f);
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tcg_gen_sub_i32(cpu_SR[SAR], tmp, dc->sar_m32);
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dc->sar_5bit = false;
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dc->sar_m32_5bit = true;
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tcg_temp_free(tmp);
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}
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static void gen_advance_ccount(DisasContext *dc)
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{
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if (dc->ccount_delta > 0) {
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TCGv_i32 tmp = tcg_const_i32(dc->ccount_delta);
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dc->ccount_delta = 0;
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gen_helper_advance_ccount(tmp);
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tcg_temp_free(tmp);
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}
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}
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static void reset_used_window(DisasContext *dc)
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{
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dc->used_window = 0;
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}
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static void gen_exception(DisasContext *dc, int excp)
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{
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TCGv_i32 tmp = tcg_const_i32(excp);
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gen_advance_ccount(dc);
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gen_helper_exception(tmp);
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tcg_temp_free(tmp);
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}
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static void gen_exception_cause(DisasContext *dc, uint32_t cause)
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{
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TCGv_i32 tpc = tcg_const_i32(dc->pc);
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TCGv_i32 tcause = tcg_const_i32(cause);
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gen_advance_ccount(dc);
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gen_helper_exception_cause(tpc, tcause);
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tcg_temp_free(tpc);
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tcg_temp_free(tcause);
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if (cause == ILLEGAL_INSTRUCTION_CAUSE ||
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cause == SYSCALL_CAUSE) {
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dc->is_jmp = DISAS_UPDATE;
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}
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}
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static void gen_exception_cause_vaddr(DisasContext *dc, uint32_t cause,
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TCGv_i32 vaddr)
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{
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TCGv_i32 tpc = tcg_const_i32(dc->pc);
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TCGv_i32 tcause = tcg_const_i32(cause);
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gen_advance_ccount(dc);
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gen_helper_exception_cause_vaddr(tpc, tcause, vaddr);
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tcg_temp_free(tpc);
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tcg_temp_free(tcause);
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}
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static void gen_check_privilege(DisasContext *dc)
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{
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if (dc->cring) {
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gen_exception_cause(dc, PRIVILEGED_CAUSE);
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dc->is_jmp = DISAS_UPDATE;
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}
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}
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static void gen_jump_slot(DisasContext *dc, TCGv dest, int slot)
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{
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tcg_gen_mov_i32(cpu_pc, dest);
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if (dc->singlestep_enabled) {
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gen_exception(dc, EXCP_DEBUG);
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} else {
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gen_advance_ccount(dc);
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if (slot >= 0) {
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tcg_gen_goto_tb(slot);
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tcg_gen_exit_tb((tcg_target_long)dc->tb + slot);
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} else {
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tcg_gen_exit_tb(0);
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}
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}
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dc->is_jmp = DISAS_UPDATE;
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}
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static void gen_jump(DisasContext *dc, TCGv dest)
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{
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gen_jump_slot(dc, dest, -1);
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}
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static void gen_jumpi(DisasContext *dc, uint32_t dest, int slot)
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{
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TCGv_i32 tmp = tcg_const_i32(dest);
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if (((dc->pc ^ dest) & TARGET_PAGE_MASK) != 0) {
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slot = -1;
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}
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gen_jump_slot(dc, tmp, slot);
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tcg_temp_free(tmp);
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}
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static void gen_callw_slot(DisasContext *dc, int callinc, TCGv_i32 dest,
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int slot)
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{
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TCGv_i32 tcallinc = tcg_const_i32(callinc);
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tcg_gen_deposit_i32(cpu_SR[PS], cpu_SR[PS],
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tcallinc, PS_CALLINC_SHIFT, PS_CALLINC_LEN);
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tcg_temp_free(tcallinc);
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tcg_gen_movi_i32(cpu_R[callinc << 2],
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(callinc << 30) | (dc->next_pc & 0x3fffffff));
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gen_jump_slot(dc, dest, slot);
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}
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static void gen_callw(DisasContext *dc, int callinc, TCGv_i32 dest)
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{
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gen_callw_slot(dc, callinc, dest, -1);
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}
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static void gen_callwi(DisasContext *dc, int callinc, uint32_t dest, int slot)
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{
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TCGv_i32 tmp = tcg_const_i32(dest);
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if (((dc->pc ^ dest) & TARGET_PAGE_MASK) != 0) {
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slot = -1;
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}
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gen_callw_slot(dc, callinc, tmp, slot);
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tcg_temp_free(tmp);
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}
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static bool gen_check_loop_end(DisasContext *dc, int slot)
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{
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if (option_enabled(dc, XTENSA_OPTION_LOOP) &&
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!(dc->tb->flags & XTENSA_TBFLAG_EXCM) &&
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dc->next_pc == dc->lend) {
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int label = gen_new_label();
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tcg_gen_brcondi_i32(TCG_COND_EQ, cpu_SR[LCOUNT], 0, label);
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tcg_gen_subi_i32(cpu_SR[LCOUNT], cpu_SR[LCOUNT], 1);
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gen_jumpi(dc, dc->lbeg, slot);
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gen_set_label(label);
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gen_jumpi(dc, dc->next_pc, -1);
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return true;
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}
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return false;
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}
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static void gen_jumpi_check_loop_end(DisasContext *dc, int slot)
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{
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if (!gen_check_loop_end(dc, slot)) {
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gen_jumpi(dc, dc->next_pc, slot);
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}
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}
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static void gen_brcond(DisasContext *dc, TCGCond cond,
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TCGv_i32 t0, TCGv_i32 t1, uint32_t offset)
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{
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int label = gen_new_label();
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tcg_gen_brcond_i32(cond, t0, t1, label);
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gen_jumpi_check_loop_end(dc, 0);
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gen_set_label(label);
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gen_jumpi(dc, dc->pc + offset, 1);
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}
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static void gen_brcondi(DisasContext *dc, TCGCond cond,
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TCGv_i32 t0, uint32_t t1, uint32_t offset)
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{
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TCGv_i32 tmp = tcg_const_i32(t1);
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gen_brcond(dc, cond, t0, tmp, offset);
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tcg_temp_free(tmp);
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}
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static void gen_rsr_ccount(DisasContext *dc, TCGv_i32 d, uint32_t sr)
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{
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gen_advance_ccount(dc);
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tcg_gen_mov_i32(d, cpu_SR[sr]);
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}
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static void gen_rsr_ptevaddr(DisasContext *dc, TCGv_i32 d, uint32_t sr)
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{
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tcg_gen_shri_i32(d, cpu_SR[EXCVADDR], 10);
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tcg_gen_or_i32(d, d, cpu_SR[sr]);
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tcg_gen_andi_i32(d, d, 0xfffffffc);
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}
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static void gen_rsr(DisasContext *dc, TCGv_i32 d, uint32_t sr)
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{
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static void (* const rsr_handler[256])(DisasContext *dc,
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TCGv_i32 d, uint32_t sr) = {
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[CCOUNT] = gen_rsr_ccount,
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[PTEVADDR] = gen_rsr_ptevaddr,
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};
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if (sregnames[sr]) {
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if (rsr_handler[sr]) {
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rsr_handler[sr](dc, d, sr);
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} else {
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tcg_gen_mov_i32(d, cpu_SR[sr]);
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}
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} else {
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qemu_log("RSR %d not implemented, ", sr);
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}
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}
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static void gen_wsr_lbeg(DisasContext *dc, uint32_t sr, TCGv_i32 s)
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{
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gen_helper_wsr_lbeg(s);
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}
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static void gen_wsr_lend(DisasContext *dc, uint32_t sr, TCGv_i32 s)
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{
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gen_helper_wsr_lend(s);
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}
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static void gen_wsr_sar(DisasContext *dc, uint32_t sr, TCGv_i32 s)
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{
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tcg_gen_andi_i32(cpu_SR[sr], s, 0x3f);
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if (dc->sar_m32_5bit) {
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tcg_gen_discard_i32(dc->sar_m32);
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}
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dc->sar_5bit = false;
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dc->sar_m32_5bit = false;
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}
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static void gen_wsr_br(DisasContext *dc, uint32_t sr, TCGv_i32 s)
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{
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tcg_gen_andi_i32(cpu_SR[sr], s, 0xffff);
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}
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static void gen_wsr_litbase(DisasContext *dc, uint32_t sr, TCGv_i32 s)
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{
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tcg_gen_andi_i32(cpu_SR[sr], s, 0xfffff001);
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/* This can change tb->flags, so exit tb */
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gen_jumpi_check_loop_end(dc, -1);
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}
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static void gen_wsr_acchi(DisasContext *dc, uint32_t sr, TCGv_i32 s)
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{
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tcg_gen_ext8s_i32(cpu_SR[sr], s);
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}
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|
|
static void gen_wsr_windowbase(DisasContext *dc, uint32_t sr, TCGv_i32 v)
|
|
{
|
|
gen_helper_wsr_windowbase(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(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_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_prid(DisasContext *dc, uint32_t sr, TCGv_i32 v)
|
|
{
|
|
}
|
|
|
|
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,
|
|
[INTSET] = gen_wsr_intset,
|
|
[INTCLEAR] = gen_wsr_intclear,
|
|
[INTENABLE] = gen_wsr_intenable,
|
|
[PS] = gen_wsr_ps,
|
|
[PRID] = gen_wsr_prid,
|
|
[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(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(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 = ldub_code(dc->pc);
|
|
uint8_t b1 = ldub_code(dc->pc + 1);
|
|
uint8_t b2 = ldub_code(dc->pc + 2);
|
|
|
|
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;
|
|
}
|
|
|
|
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, 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(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();
|
|
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_EXCEPTION);
|
|
TBD();
|
|
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(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_R[RRR_S], dtlb);
|
|
break;
|
|
|
|
case 4: /*IITLB*/ /*IDTLB*/
|
|
gen_helper_itlb(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_R[RRR_S], dtlb);
|
|
break;
|
|
|
|
case 6: /*WITLB*/ /*WDTLB*/
|
|
gen_helper_wtlb(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_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(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_wsr_lend(dc, LEND, 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);
|
|
{
|
|
TCGv_i32 bit = tcg_const_i32(1);
|
|
TCGv_i32 tmp = tcg_temp_new_i32();
|
|
tcg_gen_andi_i32(tmp, cpu_R[RRI8_T], 0x1f);
|
|
tcg_gen_shl_i32(bit, bit, tmp);
|
|
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],
|
|
1 << (((RRI8_R & 1) << 4) | RRI8_T));
|
|
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, tmp);
|
|
gen_jump(dc, tmp);
|
|
tcg_temp_free(tmp);
|
|
}
|
|
break;
|
|
|
|
case 2: /*BREAK.Nn*/
|
|
TBD();
|
|
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(CPUState *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_intermediate_code_internal(
|
|
CPUState *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;
|
|
|
|
init_litbase(&dc);
|
|
init_sar_tracker(&dc);
|
|
reset_used_window(&dc);
|
|
|
|
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();
|
|
}
|
|
|
|
disas_xtensa_insn(&dc);
|
|
++insn_count;
|
|
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 (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(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);
|
|
}
|
|
|
|
void cpu_dump_state(CPUState *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(CPUState *env, TranslationBlock *tb, int pc_pos)
|
|
{
|
|
env->pc = gen_opc_pc[pc_pos];
|
|
}
|