Rickey
d7414157a5
* Add logger implementation for mgba debugging * Add logging details to contributors guide * Clang-format * update docs real quick * Cleanup for PR * Update for PR * Fix bad rebase * Fix docs
54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
#include "mgba_logger.h"
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#ifdef MGBA_LOGGING
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <tonc.h>
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#define MGBA_REG_DEBUG_ENABLE ((vu16*)0x4FFF780)
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#define MGBA_REG_DEBUG_FLAGS ((vu16*)0x4FFF700)
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#define MGBA_REG_DEBUG_STRING ((char*)0x4FFF600)
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static const u32 MGBA_ENABLE_MAGIC = 0xC0DE;
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static const u32 MGBA_ENABLE_OK = 0x1DEA;
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static const u32 MGBA_LOG_SEND = 0x100;
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static const u32 MGBA_LOG_BUFFER_SIZE = 0x100;
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static bool mgba_logger_available = false;
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bool mgba_logger_init(void)
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{
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*MGBA_REG_DEBUG_ENABLE = MGBA_ENABLE_MAGIC;
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mgba_logger_available = (*MGBA_REG_DEBUG_ENABLE == MGBA_ENABLE_OK);
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return mgba_logger_available;
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}
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void mgba_printf(MgbaLogLevel level, const char* fmt, ...)
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{
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if (!mgba_logger_available || fmt == NULL)
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return;
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va_list args;
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va_start(args, fmt);
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vsnprintf(MGBA_REG_DEBUG_STRING, MGBA_LOG_BUFFER_SIZE, fmt, args);
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va_end(args);
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*MGBA_REG_DEBUG_FLAGS = ((uint16_t)level & 0x7) | MGBA_LOG_SEND;
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}
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#else
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// Noop stubs
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bool mgba_logger_init(void)
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{
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return false;
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}
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void mgba_printf(MgbaLogLevel level, const char* fmt, ...)
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{
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}
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#endif
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