mirror of https://github.com/mgba-emu/mgba.git
95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
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/*
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mgba.h
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Copyright (c) 2016 Jeffrey Pfau
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation and/or
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other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/iosupport.h>
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#include <gba_types.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include <mgba.h>
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#define REG_DEBUG_ENABLE (vu16*) 0x4FFF780
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#define REG_DEBUG_FLAGS (vu16*) 0x4FFF700
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#define REG_DEBUG_STRING (char*) 0x4FFF600
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ssize_t mgba_stdout_write(struct _reent* r __attribute__((unused)), int fd __attribute__((unused)), const char* ptr, size_t len) {
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if (len > 0x100) {
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len = 0x100;
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}
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strncpy(REG_DEBUG_STRING, ptr, len);
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*REG_DEBUG_FLAGS = MGBA_LOG_INFO | 0x100;
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return len;
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}
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ssize_t mgba_stderr_write(struct _reent* r __attribute__((unused)), int fd __attribute__((unused)), const char* ptr, size_t len) {
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if (len > 0x100) {
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len = 0x100;
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}
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strncpy(REG_DEBUG_STRING, ptr, len);
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*REG_DEBUG_FLAGS = MGBA_LOG_ERROR | 0x100;
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return len;
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}
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void mgba_printf(int level, const char* ptr, ...) {
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level &= 0x7;
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va_list args;
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va_start(args, ptr);
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vsnprintf(REG_DEBUG_STRING, 0x100, ptr, args);
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va_end(args);
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*REG_DEBUG_FLAGS = level | 0x100;
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}
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static const devoptab_t dotab_mgba_stdout = {
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"mgba_stdout",
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0,
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NULL,
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NULL,
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mgba_stdout_write
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};
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static const devoptab_t dotab_mgba_stderr = {
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"mgba_stderr",
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0,
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NULL,
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NULL,
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mgba_stderr_write
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};
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bool mgba_console_open(void) {
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if (!mgba_open()) {
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return false;
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}
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devoptab_list[STD_OUT] = &dotab_mgba_stdout;
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devoptab_list[STD_ERR] = &dotab_mgba_stderr;
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return true;
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}
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bool mgba_open(void) {
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*REG_DEBUG_ENABLE = 0xC0DE;
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return *REG_DEBUG_ENABLE == 0x1DEA;
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}
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void mgba_close(void) {
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*REG_DEBUG_ENABLE = 0;
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}
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