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Hexagon (target/hexagon) translation

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Read the instruction memory
Create a packet data structure
Generate TCG code for the start of the packet
Invoke the generate function for each instruction
Generate TCG code for the end of the packet

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
Message-Id: <1612763186-18161-30-git-send-email-tsimpson@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Taylor Simpson 2021-02-07 23:46:19 -06:00 committed by Richard Henderson
parent d9dcdf8ac7
commit 8b453a2b2b
2 changed files with 841 additions and 0 deletions
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/*
* Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#define QEMU_GENERATE
#include "qemu/osdep.h"
#include "cpu.h"
#include "tcg/tcg-op.h"
#include "exec/cpu_ldst.h"
#include "exec/log.h"
#include "internal.h"
#include "attribs.h"
#include "insn.h"
#include "decode.h"
#include "translate.h"
#include "printinsn.h"
TCGv hex_gpr[TOTAL_PER_THREAD_REGS];
TCGv hex_pred[NUM_PREGS];
TCGv hex_next_PC;
TCGv hex_this_PC;
TCGv hex_slot_cancelled;
TCGv hex_branch_taken;
TCGv hex_new_value[TOTAL_PER_THREAD_REGS];
#if HEX_DEBUG
TCGv hex_reg_written[TOTAL_PER_THREAD_REGS];
#endif
TCGv hex_new_pred_value[NUM_PREGS];
TCGv hex_pred_written;
TCGv hex_store_addr[STORES_MAX];
TCGv hex_store_width[STORES_MAX];
TCGv hex_store_val32[STORES_MAX];
TCGv_i64 hex_store_val64[STORES_MAX];
TCGv hex_pkt_has_store_s1;
TCGv hex_dczero_addr;
TCGv hex_llsc_addr;
TCGv hex_llsc_val;
TCGv_i64 hex_llsc_val_i64;
static const char * const hexagon_prednames[] = {
"p0", "p1", "p2", "p3"
};
void gen_exception(int excp)
{
TCGv_i32 helper_tmp = tcg_const_i32(excp);
gen_helper_raise_exception(cpu_env, helper_tmp);
tcg_temp_free_i32(helper_tmp);
}
void gen_exception_debug(void)
{
gen_exception(EXCP_DEBUG);
}
#if HEX_DEBUG
#define PACKET_BUFFER_LEN 1028
static void print_pkt(Packet *pkt)
{
GString *buf = g_string_sized_new(PACKET_BUFFER_LEN);
snprint_a_pkt_debug(buf, pkt);
HEX_DEBUG_LOG("%s", buf->str);
g_string_free(buf, true);
}
#define HEX_DEBUG_PRINT_PKT(pkt) print_pkt(pkt)
#else
#define HEX_DEBUG_PRINT_PKT(pkt) /* nothing */
#endif
static int read_packet_words(CPUHexagonState *env, DisasContext *ctx,
uint32_t words[])
{
bool found_end = false;
int nwords, max_words;
memset(words, 0, PACKET_WORDS_MAX * sizeof(uint32_t));
for (nwords = 0; !found_end && nwords < PACKET_WORDS_MAX; nwords++) {
words[nwords] = cpu_ldl_code(env,
ctx->base.pc_next + nwords * sizeof(uint32_t));
found_end = is_packet_end(words[nwords]);
}
if (!found_end) {
/* Read too many words without finding the end */
return 0;
}
/* Check for page boundary crossing */
max_words = -(ctx->base.pc_next | TARGET_PAGE_MASK) / sizeof(uint32_t);
if (nwords > max_words) {
/* We can only cross a page boundary at the beginning of a TB */
g_assert(ctx->base.num_insns == 1);
}
HEX_DEBUG_LOG("decode_packet: pc = 0x%x\n", ctx->base.pc_next);
HEX_DEBUG_LOG(" words = { ");
for (int i = 0; i < nwords; i++) {
HEX_DEBUG_LOG("0x%x, ", words[i]);
}
HEX_DEBUG_LOG("}\n");
return nwords;
}
static bool check_for_attrib(Packet *pkt, int attrib)
{
for (int i = 0; i < pkt->num_insns; i++) {
if (GET_ATTRIB(pkt->insn[i].opcode, attrib)) {
return true;
}
}
return false;
}
static bool need_pc(Packet *pkt)
{
return check_for_attrib(pkt, A_IMPLICIT_READS_PC);
}
static bool need_slot_cancelled(Packet *pkt)
{
return check_for_attrib(pkt, A_CONDEXEC);
}
static bool need_pred_written(Packet *pkt)
{
return check_for_attrib(pkt, A_WRITES_PRED_REG);
}
static void gen_start_packet(DisasContext *ctx, Packet *pkt)
{
target_ulong next_PC = ctx->base.pc_next + pkt->encod_pkt_size_in_bytes;
int i;
/* Clear out the disassembly context */
ctx->reg_log_idx = 0;
bitmap_zero(ctx->regs_written, TOTAL_PER_THREAD_REGS);
ctx->preg_log_idx = 0;
for (i = 0; i < STORES_MAX; i++) {
ctx->store_width[i] = 0;
}
tcg_gen_movi_tl(hex_pkt_has_store_s1, pkt->pkt_has_store_s1);
ctx->s1_store_processed = 0;
#if HEX_DEBUG
/* Handy place to set a breakpoint before the packet executes */
gen_helper_debug_start_packet(cpu_env);
tcg_gen_movi_tl(hex_this_PC, ctx->base.pc_next);
#endif
/* Initialize the runtime state for packet semantics */
if (need_pc(pkt)) {
tcg_gen_movi_tl(hex_gpr[HEX_REG_PC], ctx->base.pc_next);
}
if (need_slot_cancelled(pkt)) {
tcg_gen_movi_tl(hex_slot_cancelled, 0);
}
if (pkt->pkt_has_cof) {
tcg_gen_movi_tl(hex_branch_taken, 0);
tcg_gen_movi_tl(hex_next_PC, next_PC);
}
if (need_pred_written(pkt)) {
tcg_gen_movi_tl(hex_pred_written, 0);
}
}
/*
* The LOG_*_WRITE macros mark most of the writes in a packet
* However, there are some implicit writes marked as attributes
* of the applicable instructions.
*/
static void mark_implicit_reg_write(DisasContext *ctx, Insn *insn,
int attrib, int rnum)
{
if (GET_ATTRIB(insn->opcode, attrib)) {
int is_predicated = GET_ATTRIB(insn->opcode, A_CONDEXEC);
if (is_predicated && !is_preloaded(ctx, rnum)) {
tcg_gen_mov_tl(hex_new_value[rnum], hex_gpr[rnum]);
}
ctx_log_reg_write(ctx, rnum);
}
}
static void mark_implicit_pred_write(DisasContext *ctx, Insn *insn,
int attrib, int pnum)
{
if (GET_ATTRIB(insn->opcode, attrib)) {
ctx_log_pred_write(ctx, pnum);
}
}
static void mark_implicit_writes(DisasContext *ctx, Insn *insn)
{
mark_implicit_reg_write(ctx, insn, A_IMPLICIT_WRITES_FP, HEX_REG_FP);
mark_implicit_reg_write(ctx, insn, A_IMPLICIT_WRITES_SP, HEX_REG_SP);
mark_implicit_reg_write(ctx, insn, A_IMPLICIT_WRITES_LR, HEX_REG_LR);
mark_implicit_reg_write(ctx, insn, A_IMPLICIT_WRITES_LC0, HEX_REG_LC0);
mark_implicit_reg_write(ctx, insn, A_IMPLICIT_WRITES_SA0, HEX_REG_SA0);
mark_implicit_reg_write(ctx, insn, A_IMPLICIT_WRITES_LC1, HEX_REG_LC1);
mark_implicit_reg_write(ctx, insn, A_IMPLICIT_WRITES_SA1, HEX_REG_SA1);
mark_implicit_pred_write(ctx, insn, A_IMPLICIT_WRITES_P0, 0);
mark_implicit_pred_write(ctx, insn, A_IMPLICIT_WRITES_P1, 1);
mark_implicit_pred_write(ctx, insn, A_IMPLICIT_WRITES_P2, 2);
mark_implicit_pred_write(ctx, insn, A_IMPLICIT_WRITES_P3, 3);
}
static void gen_insn(CPUHexagonState *env, DisasContext *ctx,
Insn *insn, Packet *pkt)
{
if (insn->generate) {
mark_implicit_writes(ctx, insn);
insn->generate(env, ctx, insn, pkt);
} else {
gen_exception(HEX_EXCP_INVALID_OPCODE);
ctx->base.is_jmp = DISAS_NORETURN;
}
}
/*
* Helpers for generating the packet commit
*/
static void gen_reg_writes(DisasContext *ctx)
{
int i;
for (i = 0; i < ctx->reg_log_idx; i++) {
int reg_num = ctx->reg_log[i];
tcg_gen_mov_tl(hex_gpr[reg_num], hex_new_value[reg_num]);
}
}
static void gen_pred_writes(DisasContext *ctx, Packet *pkt)
{
TCGv zero, control_reg, pval;
int i;
/* Early exit if the log is empty */
if (!ctx->preg_log_idx) {
return;
}
zero = tcg_const_tl(0);
control_reg = tcg_temp_new();
pval = tcg_temp_new();
/*
* Only endloop instructions will conditionally
* write a predicate. If there are no endloop
* instructions, we can use the non-conditional
* write of the predicates.
*/
if (pkt->pkt_has_endloop) {
TCGv pred_written = tcg_temp_new();
for (i = 0; i < ctx->preg_log_idx; i++) {
int pred_num = ctx->preg_log[i];
tcg_gen_andi_tl(pred_written, hex_pred_written, 1 << pred_num);
tcg_gen_movcond_tl(TCG_COND_NE, hex_pred[pred_num],
pred_written, zero,
hex_new_pred_value[pred_num],
hex_pred[pred_num]);
}
tcg_temp_free(pred_written);
} else {
for (i = 0; i < ctx->preg_log_idx; i++) {
int pred_num = ctx->preg_log[i];
tcg_gen_mov_tl(hex_pred[pred_num], hex_new_pred_value[pred_num]);
#if HEX_DEBUG
/* Do this so HELPER(debug_commit_end) will know */
tcg_gen_ori_tl(hex_pred_written, hex_pred_written, 1 << pred_num);
#endif
}
}
tcg_temp_free(zero);
tcg_temp_free(control_reg);
tcg_temp_free(pval);
}
#if HEX_DEBUG
static inline void gen_check_store_width(DisasContext *ctx, int slot_num)
{
TCGv slot = tcg_const_tl(slot_num);
TCGv check = tcg_const_tl(ctx->store_width[slot_num]);
gen_helper_debug_check_store_width(cpu_env, slot, check);
tcg_temp_free(slot);
tcg_temp_free(check);
}
#define HEX_DEBUG_GEN_CHECK_STORE_WIDTH(ctx, slot_num) \
gen_check_store_width(ctx, slot_num)
#else
#define HEX_DEBUG_GEN_CHECK_STORE_WIDTH(ctx, slot_num) /* nothing */
#endif
static bool slot_is_predicated(Packet *pkt, int slot_num)
{
for (int i = 0; i < pkt->num_insns; i++) {
if (pkt->insn[i].slot == slot_num) {
return GET_ATTRIB(pkt->insn[i].opcode, A_CONDEXEC);
}
}
/* If we get to here, we didn't find an instruction in the requested slot */
g_assert_not_reached();
}
void process_store(DisasContext *ctx, Packet *pkt, int slot_num)
{
bool is_predicated = slot_is_predicated(pkt, slot_num);
TCGLabel *label_end = NULL;
/*
* We may have already processed this store
* See CHECK_NOSHUF in macros.h
*/
if (slot_num == 1 && ctx->s1_store_processed) {
return;
}
ctx->s1_store_processed = 1;
if (is_predicated) {
TCGv cancelled = tcg_temp_new();
label_end = gen_new_label();
/* Don't do anything if the slot was cancelled */
tcg_gen_extract_tl(cancelled, hex_slot_cancelled, slot_num, 1);
tcg_gen_brcondi_tl(TCG_COND_NE, cancelled, 0, label_end);
tcg_temp_free(cancelled);
}
{
TCGv address = tcg_temp_local_new();
tcg_gen_mov_tl(address, hex_store_addr[slot_num]);
/*
* If we know the width from the DisasContext, we can
* generate much cleaner code.
* Unfortunately, not all instructions execute the fSTORE
* macro during code generation. Anything that uses the
* generic helper will have this problem. Instructions
* that use fWRAP to generate proper TCG code will be OK.
*/
switch (ctx->store_width[slot_num]) {
case 1:
HEX_DEBUG_GEN_CHECK_STORE_WIDTH(ctx, slot_num);
tcg_gen_qemu_st8(hex_store_val32[slot_num],
hex_store_addr[slot_num],
ctx->mem_idx);
break;
case 2:
HEX_DEBUG_GEN_CHECK_STORE_WIDTH(ctx, slot_num);
tcg_gen_qemu_st16(hex_store_val32[slot_num],
hex_store_addr[slot_num],
ctx->mem_idx);
break;
case 4:
HEX_DEBUG_GEN_CHECK_STORE_WIDTH(ctx, slot_num);
tcg_gen_qemu_st32(hex_store_val32[slot_num],
hex_store_addr[slot_num],
ctx->mem_idx);
break;
case 8:
HEX_DEBUG_GEN_CHECK_STORE_WIDTH(ctx, slot_num);
tcg_gen_qemu_st64(hex_store_val64[slot_num],
hex_store_addr[slot_num],
ctx->mem_idx);
break;
default:
{
/*
* If we get to here, we don't know the width at
* TCG generation time, we'll use a helper to
* avoid branching based on the width at runtime.
*/
TCGv slot = tcg_const_tl(slot_num);
gen_helper_commit_store(cpu_env, slot);
tcg_temp_free(slot);
}
}
tcg_temp_free(address);
}
if (is_predicated) {
gen_set_label(label_end);
}
}
static void process_store_log(DisasContext *ctx, Packet *pkt)
{
/*
* When a packet has two stores, the hardware processes
* slot 1 and then slot 2. This will be important when
* the memory accesses overlap.
*/
if (pkt->pkt_has_store_s1 && !pkt->pkt_has_dczeroa) {
process_store(ctx, pkt, 1);
}
if (pkt->pkt_has_store_s0 && !pkt->pkt_has_dczeroa) {
process_store(ctx, pkt, 0);
}
}
/* Zero out a 32-bit cache line */
static void process_dczeroa(DisasContext *ctx, Packet *pkt)
{
if (pkt->pkt_has_dczeroa) {
/* Store 32 bytes of zero starting at (addr & ~0x1f) */
TCGv addr = tcg_temp_new();
TCGv_i64 zero = tcg_const_i64(0);
tcg_gen_andi_tl(addr, hex_dczero_addr, ~0x1f);
tcg_gen_qemu_st64(zero, addr, ctx->mem_idx);
tcg_gen_addi_tl(addr, addr, 8);
tcg_gen_qemu_st64(zero, addr, ctx->mem_idx);
tcg_gen_addi_tl(addr, addr, 8);
tcg_gen_qemu_st64(zero, addr, ctx->mem_idx);
tcg_gen_addi_tl(addr, addr, 8);
tcg_gen_qemu_st64(zero, addr, ctx->mem_idx);
tcg_temp_free(addr);
tcg_temp_free_i64(zero);
}
}
static void update_exec_counters(DisasContext *ctx, Packet *pkt)
{
int num_insns = pkt->num_insns;
int num_real_insns = 0;
for (int i = 0; i < num_insns; i++) {
if (!pkt->insn[i].is_endloop &&
!pkt->insn[i].part1 &&
!GET_ATTRIB(pkt->insn[i].opcode, A_IT_NOP)) {
num_real_insns++;
}
}
ctx->num_packets++;
ctx->num_insns += num_real_insns;
}
static void gen_exec_counters(DisasContext *ctx)
{
tcg_gen_addi_tl(hex_gpr[HEX_REG_QEMU_PKT_CNT],
hex_gpr[HEX_REG_QEMU_PKT_CNT], ctx->num_packets);
tcg_gen_addi_tl(hex_gpr[HEX_REG_QEMU_INSN_CNT],
hex_gpr[HEX_REG_QEMU_INSN_CNT], ctx->num_insns);
}
static void gen_commit_packet(DisasContext *ctx, Packet *pkt)
{
gen_reg_writes(ctx);
gen_pred_writes(ctx, pkt);
process_store_log(ctx, pkt);
process_dczeroa(ctx, pkt);
update_exec_counters(ctx, pkt);
#if HEX_DEBUG
{
TCGv has_st0 =
tcg_const_tl(pkt->pkt_has_store_s0 && !pkt->pkt_has_dczeroa);
TCGv has_st1 =
tcg_const_tl(pkt->pkt_has_store_s1 && !pkt->pkt_has_dczeroa);
/* Handy place to set a breakpoint at the end of execution */
gen_helper_debug_commit_end(cpu_env, has_st0, has_st1);
tcg_temp_free(has_st0);
tcg_temp_free(has_st1);
}
#endif
if (pkt->pkt_has_cof) {
ctx->base.is_jmp = DISAS_NORETURN;
}
}
static void decode_and_translate_packet(CPUHexagonState *env, DisasContext *ctx)
{
uint32_t words[PACKET_WORDS_MAX];
int nwords;
Packet pkt;
int i;
nwords = read_packet_words(env, ctx, words);
if (!nwords) {
gen_exception(HEX_EXCP_INVALID_PACKET);
ctx->base.is_jmp = DISAS_NORETURN;
return;
}
if (decode_packet(nwords, words, &pkt, false) > 0) {
HEX_DEBUG_PRINT_PKT(&pkt);
gen_start_packet(ctx, &pkt);
for (i = 0; i < pkt.num_insns; i++) {
gen_insn(env, ctx, &pkt.insn[i], &pkt);
}
gen_commit_packet(ctx, &pkt);
ctx->base.pc_next += pkt.encod_pkt_size_in_bytes;
} else {
gen_exception(HEX_EXCP_INVALID_PACKET);
ctx->base.is_jmp = DISAS_NORETURN;
}
}
static void hexagon_tr_init_disas_context(DisasContextBase *dcbase,
CPUState *cs)
{
DisasContext *ctx = container_of(dcbase, DisasContext, base);
ctx->mem_idx = MMU_USER_IDX;
ctx->num_packets = 0;
ctx->num_insns = 0;
}
static void hexagon_tr_tb_start(DisasContextBase *db, CPUState *cpu)
{
}
static void hexagon_tr_insn_start(DisasContextBase *dcbase, CPUState *cpu)
{
DisasContext *ctx = container_of(dcbase, DisasContext, base);
tcg_gen_insn_start(ctx->base.pc_next);
}
static bool hexagon_tr_breakpoint_check(DisasContextBase *dcbase, CPUState *cpu,
const CPUBreakpoint *bp)
{
DisasContext *ctx = container_of(dcbase, DisasContext, base);
tcg_gen_movi_tl(hex_gpr[HEX_REG_PC], ctx->base.pc_next);
ctx->base.is_jmp = DISAS_NORETURN;
gen_exception_debug();
/*
* The address covered by the breakpoint must be included in
* [tb->pc, tb->pc + tb->size) in order to for it to be
* properly cleared -- thus we increment the PC here so that
* the logic setting tb->size below does the right thing.
*/
ctx->base.pc_next += 4;
return true;
}
static bool pkt_crosses_page(CPUHexagonState *env, DisasContext *ctx)
{
target_ulong page_start = ctx->base.pc_first & TARGET_PAGE_MASK;
bool found_end = false;
int nwords;
for (nwords = 0; !found_end && nwords < PACKET_WORDS_MAX; nwords++) {
uint32_t word = cpu_ldl_code(env,
ctx->base.pc_next + nwords * sizeof(uint32_t));
found_end = is_packet_end(word);
}
uint32_t next_ptr = ctx->base.pc_next + nwords * sizeof(uint32_t);
return found_end && next_ptr - page_start >= TARGET_PAGE_SIZE;
}
static void hexagon_tr_translate_packet(DisasContextBase *dcbase, CPUState *cpu)
{
DisasContext *ctx = container_of(dcbase, DisasContext, base);
CPUHexagonState *env = cpu->env_ptr;
decode_and_translate_packet(env, ctx);
if (ctx->base.is_jmp == DISAS_NEXT) {
target_ulong page_start = ctx->base.pc_first & TARGET_PAGE_MASK;
target_ulong bytes_max = PACKET_WORDS_MAX * sizeof(target_ulong);
if (ctx->base.pc_next - page_start >= TARGET_PAGE_SIZE ||
(ctx->base.pc_next - page_start >= TARGET_PAGE_SIZE - bytes_max &&
pkt_crosses_page(env, ctx))) {
ctx->base.is_jmp = DISAS_TOO_MANY;
}
/*
* The CPU log is used to compare against LLDB single stepping,
* so end the TLB after every packet.
*/
HexagonCPU *hex_cpu = container_of(env, HexagonCPU, env);
if (hex_cpu->lldb_compat && qemu_loglevel_mask(CPU_LOG_TB_CPU)) {
ctx->base.is_jmp = DISAS_TOO_MANY;
}
#if HEX_DEBUG
/* When debugging, only put one packet per TB */
ctx->base.is_jmp = DISAS_TOO_MANY;
#endif
}
}
static void hexagon_tr_tb_stop(DisasContextBase *dcbase, CPUState *cpu)
{
DisasContext *ctx = container_of(dcbase, DisasContext, base);
switch (ctx->base.is_jmp) {
case DISAS_TOO_MANY:
gen_exec_counters(ctx);
tcg_gen_movi_tl(hex_gpr[HEX_REG_PC], ctx->base.pc_next);
if (ctx->base.singlestep_enabled) {
gen_exception_debug();
} else {
tcg_gen_exit_tb(NULL, 0);
}
break;
case DISAS_NORETURN:
gen_exec_counters(ctx);
tcg_gen_mov_tl(hex_gpr[HEX_REG_PC], hex_next_PC);
if (ctx->base.singlestep_enabled) {
gen_exception_debug();
} else {
tcg_gen_exit_tb(NULL, 0);
}
break;
default:
g_assert_not_reached();
}
}
static void hexagon_tr_disas_log(const DisasContextBase *dcbase, CPUState *cpu)
{
qemu_log("IN: %s\n", lookup_symbol(dcbase->pc_first));
log_target_disas(cpu, dcbase->pc_first, dcbase->tb->size);
}
static const TranslatorOps hexagon_tr_ops = {
.init_disas_context = hexagon_tr_init_disas_context,
.tb_start = hexagon_tr_tb_start,
.insn_start = hexagon_tr_insn_start,
.breakpoint_check = hexagon_tr_breakpoint_check,
.translate_insn = hexagon_tr_translate_packet,
.tb_stop = hexagon_tr_tb_stop,
.disas_log = hexagon_tr_disas_log,
};
void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
{
DisasContext ctx;
translator_loop(&hexagon_tr_ops, &ctx.base, cs, tb, max_insns);
}
#define NAME_LEN 64
static char new_value_names[TOTAL_PER_THREAD_REGS][NAME_LEN];
#if HEX_DEBUG
static char reg_written_names[TOTAL_PER_THREAD_REGS][NAME_LEN];
#endif
static char new_pred_value_names[NUM_PREGS][NAME_LEN];
static char store_addr_names[STORES_MAX][NAME_LEN];
static char store_width_names[STORES_MAX][NAME_LEN];
static char store_val32_names[STORES_MAX][NAME_LEN];
static char store_val64_names[STORES_MAX][NAME_LEN];
void hexagon_translate_init(void)
{
int i;
opcode_init();
#if HEX_DEBUG
if (!qemu_logfile) {
qemu_set_log(qemu_loglevel);
}
#endif
for (i = 0; i < TOTAL_PER_THREAD_REGS; i++) {
hex_gpr[i] = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, gpr[i]),
hexagon_regnames[i]);
snprintf(new_value_names[i], NAME_LEN, "new_%s", hexagon_regnames[i]);
hex_new_value[i] = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, new_value[i]),
new_value_names[i]);
#if HEX_DEBUG
snprintf(reg_written_names[i], NAME_LEN, "reg_written_%s",
hexagon_regnames[i]);
hex_reg_written[i] = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, reg_written[i]),
reg_written_names[i]);
#endif
}
for (i = 0; i < NUM_PREGS; i++) {
hex_pred[i] = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, pred[i]),
hexagon_prednames[i]);
snprintf(new_pred_value_names[i], NAME_LEN, "new_pred_%s",
hexagon_prednames[i]);
hex_new_pred_value[i] = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, new_pred_value[i]),
new_pred_value_names[i]);
}
hex_pred_written = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, pred_written), "pred_written");
hex_next_PC = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, next_PC), "next_PC");
hex_this_PC = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, this_PC), "this_PC");
hex_slot_cancelled = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, slot_cancelled), "slot_cancelled");
hex_branch_taken = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, branch_taken), "branch_taken");
hex_pkt_has_store_s1 = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, pkt_has_store_s1), "pkt_has_store_s1");
hex_dczero_addr = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, dczero_addr), "dczero_addr");
hex_llsc_addr = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, llsc_addr), "llsc_addr");
hex_llsc_val = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, llsc_val), "llsc_val");
hex_llsc_val_i64 = tcg_global_mem_new_i64(cpu_env,
offsetof(CPUHexagonState, llsc_val_i64), "llsc_val_i64");
for (i = 0; i < STORES_MAX; i++) {
snprintf(store_addr_names[i], NAME_LEN, "store_addr_%d", i);
hex_store_addr[i] = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, mem_log_stores[i].va),
store_addr_names[i]);
snprintf(store_width_names[i], NAME_LEN, "store_width_%d", i);
hex_store_width[i] = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, mem_log_stores[i].width),
store_width_names[i]);
snprintf(store_val32_names[i], NAME_LEN, "store_val32_%d", i);
hex_store_val32[i] = tcg_global_mem_new(cpu_env,
offsetof(CPUHexagonState, mem_log_stores[i].data32),
store_val32_names[i]);
snprintf(store_val64_names[i], NAME_LEN, "store_val64_%d", i);
hex_store_val64[i] = tcg_global_mem_new_i64(cpu_env,
offsetof(CPUHexagonState, mem_log_stores[i].data64),
store_val64_names[i]);
}
}

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/*
* Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef HEXAGON_TRANSLATE_H
#define HEXAGON_TRANSLATE_H
#include "qemu/bitmap.h"
#include "cpu.h"
#include "exec/translator.h"
#include "tcg/tcg-op.h"
#include "internal.h"
typedef struct DisasContext {
DisasContextBase base;
uint32_t mem_idx;
uint32_t num_packets;
uint32_t num_insns;
int reg_log[REG_WRITES_MAX];
int reg_log_idx;
DECLARE_BITMAP(regs_written, TOTAL_PER_THREAD_REGS);
int preg_log[PRED_WRITES_MAX];
int preg_log_idx;
uint8_t store_width[STORES_MAX];
uint8_t s1_store_processed;
} DisasContext;
static inline void ctx_log_reg_write(DisasContext *ctx, int rnum)
{
#if HEX_DEBUG
if (test_bit(rnum, ctx->regs_written)) {
HEX_DEBUG_LOG("WARNING: Multiple writes to r%d\n", rnum);
}
#endif
ctx->reg_log[ctx->reg_log_idx] = rnum;
ctx->reg_log_idx++;
set_bit(rnum, ctx->regs_written);
}
static inline void ctx_log_reg_write_pair(DisasContext *ctx, int rnum)
{
ctx_log_reg_write(ctx, rnum);
ctx_log_reg_write(ctx, rnum + 1);
}
static inline void ctx_log_pred_write(DisasContext *ctx, int pnum)
{
ctx->preg_log[ctx->preg_log_idx] = pnum;
ctx->preg_log_idx++;
}
static inline bool is_preloaded(DisasContext *ctx, int num)
{
return test_bit(num, ctx->regs_written);
}
extern TCGv hex_gpr[TOTAL_PER_THREAD_REGS];
extern TCGv hex_pred[NUM_PREGS];
extern TCGv hex_next_PC;
extern TCGv hex_this_PC;
extern TCGv hex_slot_cancelled;
extern TCGv hex_branch_taken;
extern TCGv hex_new_value[TOTAL_PER_THREAD_REGS];
extern TCGv hex_reg_written[TOTAL_PER_THREAD_REGS];
extern TCGv hex_new_pred_value[NUM_PREGS];
extern TCGv hex_pred_written;
extern TCGv hex_store_addr[STORES_MAX];
extern TCGv hex_store_width[STORES_MAX];
extern TCGv hex_store_val32[STORES_MAX];
extern TCGv_i64 hex_store_val64[STORES_MAX];
extern TCGv hex_dczero_addr;
extern TCGv hex_llsc_addr;
extern TCGv hex_llsc_val;
extern TCGv_i64 hex_llsc_val_i64;
void gen_exception(int excp);
void gen_exception_debug(void);
void process_store(DisasContext *ctx, Packet *pkt, int slot_num);
#endif