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add debug pc logging to sh4 dispatch

This commit is contained in:
Anthony Pesch 2017-01-08 15:38:19 -08:00
parent c4ac2ab941
commit c4942957f3
1 changed files with 24 additions and 7 deletions
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31
src/hw/sh4/x64/sh4_dispatch.cc
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@ -7,6 +7,16 @@ extern "C" {
#include "jit/jit.h"
}
/* log out pc each time dispatch is entered for debugging */
#define LOG_DISPATCH_EVERY_N 0
/* controls if edges are added and managed between static branches. the first
time each branch is hit, its destination block will be dynamically looked
up. if this is enabled, an edge will be added between the two blocks, and
the branch will be patched to directly jmp to the destination block,
avoiding the need for redundant lookups */
#define LINK_STATIC_BRANCHES !LOG_DISPATCH_EVERY_N
/* executable sh4 code sits between 0x0c000000 and 0x0d000000. each instr is 2
bytes, making for a maximum of 0x800000 blocks */
#define CODE_SIZE 0x800000
@ -23,13 +33,6 @@ static void *sh4_cache[CACHE_SIZE];
static int sh4_cache_size = CACHE_SIZE;
static uint8_t sh4_dispatch[DISPATCH_SIZE];
/* controls if edges are added and managed between static branches. the first
time each branch is hit, its destination block will be dynamically looked
up. if this is enabled, an edge will be added between the two blocks, and
the branch will be patched to directly jmp to the destination block,
avoiding the need for redundant lookups */
#define LINK_STATIC_BRANCHES 1
void *sh4_dispatch_dynamic;
void *sh4_dispatch_static;
void *sh4_dispatch_compile;
@ -54,6 +57,16 @@ static void **sh4_dispatch_code_ptr(uint32_t addr) {
return &sh4_cache[(addr & 0x00ffffff) >> 1];
}
#if LOG_DISPATCH_EVERY_N
static void sh4_dispatch_log(struct sh4_ctx *ctx) {
static uint64_t num;
if ((num++ % LOG_DISPATCH_EVERY_N) == 0) {
LOG_INFO("sh4_log_dispatch 0x%08x", ctx->pc);
}
}
#endif
void sh4_dispatch_restore_edge(void *code, uint32_t dst) {
auto &e = code_emitter;
size_t original_size = e.getSize();
@ -109,6 +122,10 @@ void sh4_dispatch_init(void *sh4, void *jit, void *ctx, void *mem) {
sh4_dispatch_dynamic = e.getCurr<void *>();
#if LOG_DISPATCH_EVERY_N
e.mov(arg0, e.r14);
e.call(&sh4_dispatch_log);
#endif
e.mov(e.rax, (uint64_t)sh4_cache);
e.mov(e.ecx, e.dword[e.r14 + offsetof(struct sh4_ctx, pc)]);
e.and_(e.ecx, 0x00ffffff);