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[PATCH] Hexagon (target/hexagon) Remove HEX_DEBUG/HEX_DEBUG_LOG
|
From: |
Taylor Simpson |
|
Subject: |
[PATCH] Hexagon (target/hexagon) Remove HEX_DEBUG/HEX_DEBUG_LOG |
|
Date: |
Mon, 4 Nov 2024 10:49:04 -0700 |
All Hexagon debugging is now done with QEMU mechanisms
(e.g., -d in_asm) or with a connected debugger (lldb).
Signed-off-by: Taylor Simpson <ltaylorsimpson@gmail.com>
---
target/hexagon/cpu.h | 8 +--
target/hexagon/helper.h | 5 +-
target/hexagon/internal.h | 13 +----
target/hexagon/translate.h | 2 -
target/hexagon/genptr.c | 9 +--
target/hexagon/op_helper.c | 112 -------------------------------------
target/hexagon/translate.c | 66 ----------------------
target/hexagon/README | 9 ---
8 files changed, 4 insertions(+), 220 deletions(-)
diff --git a/target/hexagon/cpu.h b/target/hexagon/cpu.h
index 764f3c38cc..bb7d83b53e 100644
--- a/target/hexagon/cpu.h
+++ b/target/hexagon/cpu.h
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights
Reserved.
+ * Copyright(c) 2019-2024 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
@@ -79,12 +79,6 @@ typedef struct CPUArchState {
uint8_t slot_cancelled;
target_ulong new_value_usr;
- /*
- * Only used when HEX_DEBUG is on, but unconditionally included
- * to reduce recompile time when turning HEX_DEBUG on/off.
- */
- target_ulong reg_written[TOTAL_PER_THREAD_REGS];
-
MemLog mem_log_stores[STORES_MAX];
float_status fp_status;
diff --git a/target/hexagon/helper.h b/target/hexagon/helper.h
index fa0ebaf7c8..e68f571abf 100644
--- a/target/hexagon/helper.h
+++ b/target/hexagon/helper.h
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights
Reserved.
+ * Copyright(c) 2019-2024 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
@@ -19,9 +19,6 @@
#include "helper_protos_generated.h.inc"
DEF_HELPER_FLAGS_2(raise_exception, TCG_CALL_NO_RETURN, noreturn, env, i32)
-DEF_HELPER_1(debug_start_packet, void, env)
-DEF_HELPER_FLAGS_3(debug_check_store_width, TCG_CALL_NO_WG, void, env, int,
int)
-DEF_HELPER_FLAGS_5(debug_commit_end, TCG_CALL_NO_WG, void, env, i32, int, int,
int)
DEF_HELPER_2(commit_store, void, env, int)
DEF_HELPER_3(gather_store, void, env, i32, int)
DEF_HELPER_1(commit_hvx_stores, void, env)
diff --git a/target/hexagon/internal.h b/target/hexagon/internal.h
index beb08cb7e3..fad78b8063 100644
--- a/target/hexagon/internal.h
+++ b/target/hexagon/internal.h
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights
Reserved.
+ * Copyright(c) 2019-2024 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
@@ -20,17 +20,6 @@
#include "qemu/log.h"
-/*
- * Change HEX_DEBUG to 1 to turn on debugging output
- */
-#define HEX_DEBUG 0
-#define HEX_DEBUG_LOG(...) \
- do { \
- if (HEX_DEBUG) { \
- qemu_log(__VA_ARGS__); \
- } \
- } while (0)
-
int hexagon_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
int hexagon_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
int hexagon_hvx_gdb_read_register(CPUState *env, GByteArray *mem_buf, int n);
diff --git a/target/hexagon/translate.h b/target/hexagon/translate.h
index 00cc2bcd63..d251e2233f 100644
--- a/target/hexagon/translate.h
+++ b/target/hexagon/translate.h
@@ -73,7 +73,6 @@ typedef struct DisasContext {
bool has_hvx_overlap;
TCGv new_value[TOTAL_PER_THREAD_REGS];
TCGv new_pred_value[NUM_PREGS];
- TCGv pred_written;
TCGv branch_taken;
TCGv dczero_addr;
} DisasContext;
@@ -271,7 +270,6 @@ extern TCGv hex_gpr[TOTAL_PER_THREAD_REGS];
extern TCGv hex_pred[NUM_PREGS];
extern TCGv hex_slot_cancelled;
extern TCGv hex_new_value_usr;
-extern TCGv hex_reg_written[TOTAL_PER_THREAD_REGS];
extern TCGv hex_store_addr[STORES_MAX];
extern TCGv hex_store_width[STORES_MAX];
extern TCGv hex_store_val32[STORES_MAX];
diff --git a/target/hexagon/genptr.c b/target/hexagon/genptr.c
index dbae6c570a..b375934bfa 100644
--- a/target/hexagon/genptr.c
+++ b/target/hexagon/genptr.c
@@ -1,5 +1,5 @@
/*
- * Copyright(c) 2019-2023 Qualcomm Innovation Center, Inc. All Rights
Reserved.
+ * Copyright(c) 2019-2024 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
@@ -100,10 +100,6 @@ void gen_log_reg_write(DisasContext *ctx, int rnum, TCGv
val)
gen_masked_reg_write(val, hex_gpr[rnum], reg_mask);
tcg_gen_mov_tl(get_result_gpr(ctx, rnum), val);
- if (HEX_DEBUG) {
- /* Do this so HELPER(debug_commit_end) will know */
- tcg_gen_movi_tl(hex_reg_written[rnum], 1);
- }
}
static void gen_log_reg_write_pair(DisasContext *ctx, int rnum, TCGv_i64 val)
@@ -151,9 +147,6 @@ void gen_log_pred_write(DisasContext *ctx, int pnum, TCGv
val)
} else {
tcg_gen_and_tl(pred, pred, base_val);
}
- if (HEX_DEBUG) {
- tcg_gen_ori_tl(ctx->pred_written, ctx->pred_written, 1 << pnum);
- }
set_bit(pnum, ctx->pregs_written);
}
diff --git a/target/hexagon/op_helper.c b/target/hexagon/op_helper.c
index 90e7aaa097..01d1a1b1a7 100644
--- a/target/hexagon/op_helper.c
+++ b/target/hexagon/op_helper.c
@@ -54,9 +54,6 @@ G_NORETURN void HELPER(raise_exception)(CPUHexagonState *env,
uint32_t excp)
void log_store32(CPUHexagonState *env, target_ulong addr,
target_ulong val, int width, int slot)
{
- HEX_DEBUG_LOG("log_store%d(0x" TARGET_FMT_lx
- ", %" PRId32 " [0x08%" PRIx32 "])\n",
- width, addr, val, val);
env->mem_log_stores[slot].va = addr;
env->mem_log_stores[slot].width = width;
env->mem_log_stores[slot].data32 = val;
@@ -65,35 +62,11 @@ void log_store32(CPUHexagonState *env, target_ulong addr,
void log_store64(CPUHexagonState *env, target_ulong addr,
int64_t val, int width, int slot)
{
- HEX_DEBUG_LOG("log_store%d(0x" TARGET_FMT_lx
- ", %" PRId64 " [0x016%" PRIx64 "])\n",
- width, addr, val, val);
env->mem_log_stores[slot].va = addr;
env->mem_log_stores[slot].width = width;
env->mem_log_stores[slot].data64 = val;
}
-/* Handy place to set a breakpoint */
-void HELPER(debug_start_packet)(CPUHexagonState *env)
-{
- HEX_DEBUG_LOG("Start packet: pc = 0x" TARGET_FMT_lx "\n",
- env->gpr[HEX_REG_PC]);
-
- for (int i = 0; i < TOTAL_PER_THREAD_REGS; i++) {
- env->reg_written[i] = 0;
- }
-}
-
-/* Checks for bookkeeping errors between disassembly context and runtime */
-void HELPER(debug_check_store_width)(CPUHexagonState *env, int slot, int check)
-{
- if (env->mem_log_stores[slot].width != check) {
- HEX_DEBUG_LOG("ERROR: %d != %d\n",
- env->mem_log_stores[slot].width, check);
- g_assert_not_reached();
- }
-}
-
static void commit_store(CPUHexagonState *env, int slot_num, uintptr_t ra)
{
uint8_t width = env->mem_log_stores[slot_num].width;
@@ -173,91 +146,6 @@ void HELPER(commit_hvx_stores)(CPUHexagonState *env)
}
}
-static void print_store(CPUHexagonState *env, int slot)
-{
- if (!(env->slot_cancelled & (1 << slot))) {
- uint8_t width = env->mem_log_stores[slot].width;
- if (width == 1) {
- uint32_t data = env->mem_log_stores[slot].data32 & 0xff;
- HEX_DEBUG_LOG("\tmemb[0x" TARGET_FMT_lx "] = %" PRId32
- " (0x%02" PRIx32 ")\n",
- env->mem_log_stores[slot].va, data, data);
- } else if (width == 2) {
- uint32_t data = env->mem_log_stores[slot].data32 & 0xffff;
- HEX_DEBUG_LOG("\tmemh[0x" TARGET_FMT_lx "] = %" PRId32
- " (0x%04" PRIx32 ")\n",
- env->mem_log_stores[slot].va, data, data);
- } else if (width == 4) {
- uint32_t data = env->mem_log_stores[slot].data32;
- HEX_DEBUG_LOG("\tmemw[0x" TARGET_FMT_lx "] = %" PRId32
- " (0x%08" PRIx32 ")\n",
- env->mem_log_stores[slot].va, data, data);
- } else if (width == 8) {
- HEX_DEBUG_LOG("\tmemd[0x" TARGET_FMT_lx "] = %" PRId64
- " (0x%016" PRIx64 ")\n",
- env->mem_log_stores[slot].va,
- env->mem_log_stores[slot].data64,
- env->mem_log_stores[slot].data64);
- } else {
- HEX_DEBUG_LOG("\tBad store width %d\n", width);
- g_assert_not_reached();
- }
- }
-}
-
-/* This function is a handy place to set a breakpoint */
-void HELPER(debug_commit_end)(CPUHexagonState *env, uint32_t this_PC,
- int pred_written, int has_st0, int has_st1)
-{
- bool reg_printed = false;
- bool pred_printed = false;
- int i;
-
- HEX_DEBUG_LOG("Packet committed: pc = 0x" TARGET_FMT_lx "\n", this_PC);
- HEX_DEBUG_LOG("slot_cancelled = %d\n", env->slot_cancelled);
-
- for (i = 0; i < TOTAL_PER_THREAD_REGS; i++) {
- if (env->reg_written[i]) {
- if (!reg_printed) {
- HEX_DEBUG_LOG("Regs written\n");
- reg_printed = true;
- }
- HEX_DEBUG_LOG("\tr%d = " TARGET_FMT_ld " (0x" TARGET_FMT_lx ")\n",
- i, env->gpr[i], env->gpr[i]);
- }
- }
-
- for (i = 0; i < NUM_PREGS; i++) {
- if (pred_written & (1 << i)) {
- if (!pred_printed) {
- HEX_DEBUG_LOG("Predicates written\n");
- pred_printed = true;
- }
- HEX_DEBUG_LOG("\tp%d = 0x" TARGET_FMT_lx "\n",
- i, env->pred[i]);
- }
- }
-
- if (has_st0 || has_st1) {
- HEX_DEBUG_LOG("Stores\n");
- if (has_st0) {
- print_store(env, 0);
- }
- if (has_st1) {
- print_store(env, 1);
- }
- }
-
- HEX_DEBUG_LOG("Next PC = " TARGET_FMT_lx "\n", env->gpr[HEX_REG_PC]);
- HEX_DEBUG_LOG("Exec counters: pkt = " TARGET_FMT_lx
- ", insn = " TARGET_FMT_lx
- ", hvx = " TARGET_FMT_lx "\n",
- env->gpr[HEX_REG_QEMU_PKT_CNT],
- env->gpr[HEX_REG_QEMU_INSN_CNT],
- env->gpr[HEX_REG_QEMU_HVX_CNT]);
-
-}
-
int32_t HELPER(fcircadd)(int32_t RxV, int32_t offset, int32_t M, int32_t CS)
{
uint32_t K_const = extract32(M, 24, 4);
diff --git a/target/hexagon/translate.c b/target/hexagon/translate.c
index 4b1bee3c6d..bce85eaeb8 100644
--- a/target/hexagon/translate.c
+++ b/target/hexagon/translate.c
@@ -50,7 +50,6 @@ TCGv hex_gpr[TOTAL_PER_THREAD_REGS];
TCGv hex_pred[NUM_PREGS];
TCGv hex_slot_cancelled;
TCGv hex_new_value_usr;
-TCGv hex_reg_written[TOTAL_PER_THREAD_REGS];
TCGv hex_store_addr[STORES_MAX];
TCGv hex_store_width[STORES_MAX];
TCGv hex_store_val32[STORES_MAX];
@@ -195,21 +194,6 @@ static void gen_exception_end_tb(DisasContext *ctx, int
excp)
}
-#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) \
- do { \
- if (HEX_DEBUG) { \
- print_pkt(pkt); \
- } \
- } while (0)
-
static int read_packet_words(CPUHexagonState *env, DisasContext *ctx,
uint32_t words[])
{
@@ -235,14 +219,6 @@ static int read_packet_words(CPUHexagonState *env,
DisasContext *ctx,
g_assert(ctx->base.num_insns == 1);
}
- HEX_DEBUG_LOG("decode_packet: pc = 0x%" VADDR_PRIx "\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;
}
@@ -465,11 +441,6 @@ static void gen_start_packet(DisasContext *ctx)
*/
bitmap_zero(ctx->pregs_written, NUM_PREGS);
- if (HEX_DEBUG) {
- /* Handy place to set a breakpoint before the packet executes */
- gen_helper_debug_start_packet(tcg_env);
- }
-
/* Initialize the runtime state for packet semantics */
if (need_slot_cancelled(pkt)) {
tcg_gen_movi_tl(hex_slot_cancelled, 0);
@@ -484,10 +455,6 @@ static void gen_start_packet(DisasContext *ctx)
tcg_gen_movi_tl(hex_gpr[HEX_REG_PC], next_PC);
}
}
- if (HEX_DEBUG) {
- ctx->pred_written = tcg_temp_new();
- tcg_gen_movi_tl(ctx->pred_written, 0);
- }
/* Preload the predicated registers into get_result_gpr(ctx, i) */
if (ctx->need_commit &&
@@ -635,15 +602,6 @@ static void gen_pred_writes(DisasContext *ctx)
}
}
-static void gen_check_store_width(DisasContext *ctx, int slot_num)
-{
- if (HEX_DEBUG) {
- TCGv slot = tcg_constant_tl(slot_num);
- TCGv check = tcg_constant_tl(ctx->store_width[slot_num]);
- gen_helper_debug_check_store_width(tcg_env, slot, check);
- }
-}
-
static bool slot_is_predicated(Packet *pkt, int slot_num)
{
for (int i = 0; i < pkt->num_insns; i++) {
@@ -691,25 +649,21 @@ void process_store(DisasContext *ctx, int slot_num)
*/
switch (ctx->store_width[slot_num]) {
case 1:
- gen_check_store_width(ctx, slot_num);
tcg_gen_qemu_st_tl(hex_store_val32[slot_num],
hex_store_addr[slot_num],
ctx->mem_idx, MO_UB);
break;
case 2:
- gen_check_store_width(ctx, slot_num);
tcg_gen_qemu_st_tl(hex_store_val32[slot_num],
hex_store_addr[slot_num],
ctx->mem_idx, MO_TEUW);
break;
case 4:
- gen_check_store_width(ctx, slot_num);
tcg_gen_qemu_st_tl(hex_store_val32[slot_num],
hex_store_addr[slot_num],
ctx->mem_idx, MO_TEUL);
break;
case 8:
- gen_check_store_width(ctx, slot_num);
tcg_gen_qemu_st_i64(hex_store_val64[slot_num],
hex_store_addr[slot_num],
ctx->mem_idx, MO_TEUQ);
@@ -937,16 +891,6 @@ static void gen_commit_packet(DisasContext *ctx)
gen_commit_hvx(ctx);
}
update_exec_counters(ctx);
- if (HEX_DEBUG) {
- TCGv has_st0 =
- tcg_constant_tl(pkt->pkt_has_store_s0 && !pkt->pkt_has_dczeroa);
- TCGv has_st1 =
- tcg_constant_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(tcg_env, tcg_constant_tl(ctx->pkt->pc),
- ctx->pred_written, has_st0, has_st1);
- }
if (pkt->vhist_insn != NULL) {
ctx->pre_commit = false;
@@ -975,7 +919,6 @@ static void decode_and_translate_packet(CPUHexagonState
*env, DisasContext *ctx)
ctx->pkt = &pkt;
if (decode_packet(ctx, nwords, words, &pkt, false) > 0) {
pkt.pc = ctx->base.pc_next;
- HEX_DEBUG_PRINT_PKT(&pkt);
gen_start_packet(ctx);
for (i = 0; i < pkt.num_insns; i++) {
ctx->insn = &pkt.insn[i];
@@ -1093,7 +1036,6 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock
*tb, int *max_insns,
}
#define NAME_LEN 64
-static char reg_written_names[TOTAL_PER_THREAD_REGS][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];
@@ -1112,14 +1054,6 @@ void hexagon_translate_init(void)
hex_gpr[i] = tcg_global_mem_new(tcg_env,
offsetof(CPUHexagonState, gpr[i]),
hexagon_regnames[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(tcg_env,
- offsetof(CPUHexagonState, reg_written[i]),
- reg_written_names[i]);
- }
}
hex_new_value_usr = tcg_global_mem_new(tcg_env,
offsetof(CPUHexagonState, new_value_usr), "new_value_usr");
diff --git a/target/hexagon/README b/target/hexagon/README
index 7ffd517d70..ca617e3364 100644
--- a/target/hexagon/README
+++ b/target/hexagon/README
@@ -282,10 +282,6 @@ For Hexagon Vector eXtensions (HVX), the following fields
are used
*** Debugging ***
-You can turn on a lot of debugging by changing the HEX_DEBUG macro to 1 in
-internal.h. This will stream a lot of information as it generates TCG and
-executes the code.
-
To track down nasty issues with Hexagon->TCG generation, we compare the
execution results with actual hardware running on a Hexagon Linux target.
Run qemu with the "-d cpu" option. Then, we can diff the results and figure
@@ -305,8 +301,3 @@ Here are some handy places to set breakpoints
The helper function for each instruction is named helper_<TAG>, so here's
an example that will set a breakpoint at the start
br helper_A2_add
- If you have the HEX_DEBUG macro set, the following will be useful
- At the start of execution of a packet for a given PC
- br helper_debug_start_packet if env->gpr[41] == 0xdeadbeef
- At the end of execution of a packet for a given PC
- br helper_debug_commit_end if this_PC == 0xdeadbeef
--
2.34.1
- [PATCH] Hexagon (target/hexagon) Remove HEX_DEBUG/HEX_DEBUG_LOG,
Taylor Simpson <=