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debug wrap perf counters

This commit is contained in:
Joseph Mattiello 2025-07-06 18:08:10 -04:00
parent 1dd8e4f833
commit dedd3c82dc
1 changed files with 33 additions and 1 deletions
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34
core/hw/sh4/interpr/sh4_ultra_interpreter.cpp
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@ -22,28 +22,36 @@
struct UltraInstructionCache {
u32 pc[ICACHE_SIZE];
u16 opcode[ICACHE_SIZE];
#ifdef DEBUG
u64 hits;
u64 misses;
#endif
void reset() {
for (int i = 0; i < ICACHE_SIZE; i++) {
pc[i] = 0xFFFFFFFF;
opcode[i] = 0;
}
#ifdef DEBUG
hits = 0;
misses = 0;
#endif
}
u16 fetch(u32 addr) {
u32 index = (addr >> 1) & ICACHE_MASK;
if (pc[index] == addr) {
#ifdef DEBUG
hits++;
#endif
return opcode[index];
}
// Cache miss - fetch from memory
#ifdef DEBUG
misses++;
#endif
u16 op = IReadMem16(addr);
pc[index] = addr;
opcode[index] = op;
@ -55,24 +63,30 @@ static UltraInstructionCache g_icache;
// === PERFORMANCE STATS ===
struct UltraStats {
#ifdef DEBUG
u64 instructions;
u64 cycles;
u32 mmu_state_changes;
#endif
bool mmu_enabled;
void reset() {
#ifdef DEBUG
instructions = 0;
cycles = 0;
mmu_state_changes = 0;
#endif
mmu_enabled = ::mmu_enabled();
}
void check_mmu() {
bool current_mmu = ::mmu_enabled();
if (current_mmu != mmu_enabled) {
#ifdef DEBUG
mmu_state_changes++;
mmu_enabled = current_mmu;
INFO_LOG(INTERPRETER, "🔄 MMU state changed: %s", current_mmu ? "ENABLED" : "DISABLED");
#endif
mmu_enabled = current_mmu;
}
}
};
@ -117,18 +131,27 @@ static void ultra_interpreter_run() {
OpPtr[op](op);
sh4cycles.executeCycles(op);
#ifdef DEBUG
// Update performance counters
g_stats.instructions++;
g_stats.cycles += OpDesc[op]->IssueCycles;
#endif
// ARM64 prefetch optimization
#ifdef __aarch64__
#ifdef DEBUG
if (__builtin_expect((g_stats.instructions & 0x7) == 0, 0)) {
#else
// Use a simple counter for prefetching in release builds
static u32 prefetch_counter = 0;
if (__builtin_expect((++prefetch_counter & 0x7) == 0, 0)) {
#endif
// Prefetch next cache line every 8 instructions
__builtin_prefetch(reinterpret_cast<void*>(static_cast<uintptr_t>(next_pc + 32)), 0, 1);
}
#endif
#ifdef DEBUG
// Check MMU state periodically
if (__builtin_expect((g_stats.instructions & 0xFF) == 0, 0)) {
g_stats.check_mmu();
@ -142,6 +165,13 @@ static void ultra_interpreter_run() {
INFO_LOG(INTERPRETER, "📊 ULTRA-INTERPRETER: %llu instructions, %.1f%% icache hit ratio, %s MMU",
g_stats.instructions, cache_hit_ratio, g_stats.mmu_enabled ? "POST" : "PRE");
}
#else
// Check MMU state periodically in release builds (without logging)
static u32 mmu_check_counter = 0;
if (__builtin_expect((++mmu_check_counter & 0xFF) == 0, 0)) {
g_stats.check_mmu();
}
#endif
} while (p_sh4rcb->cntx.cycle_counter > 0);
@ -157,6 +187,7 @@ static void ultra_interpreter_run() {
}
INFO_LOG(INTERPRETER, "🏁 ULTRA-INTERPRETER: Finished execution");
#ifdef DEBUG
INFO_LOG(INTERPRETER, "📊 Final stats: %llu instructions, %llu cycles, %d MMU changes",
g_stats.instructions, g_stats.cycles, g_stats.mmu_state_changes);
@ -164,6 +195,7 @@ static void ultra_interpreter_run() {
(float)g_icache.hits / (g_icache.hits + g_icache.misses) * 100.0f : 0.0f;
INFO_LOG(INTERPRETER, "📊 Instruction cache: %llu hits, %llu misses, %.1f%% hit ratio",
g_icache.hits, g_icache.misses, cache_hit_ratio);
#endif
}
// === ULTRA-INTERPRETER INTERFACE ===