nostalgia/deps/gbastartup/cstartup.cpp

50 lines
1.4 KiB
C++

/*
* Copyright 2016 - 2021 gary@drinkingtea.net
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <ox/std/bit.hpp>
#include <ox/std/heapmgr.hpp>
#define MEM_EWRAM_BEGIN ox::bit_cast<char*>(0x02000000)
#define MEM_EWRAM_END ox::bit_cast<char*>(0x0203FFFF)
#define HEAP_BEGIN ox::bit_cast<char*>(MEM_EWRAM_BEGIN)
// set size to half of EWRAM
#define HEAP_SIZE ((MEM_EWRAM_END - MEM_EWRAM_BEGIN) / 2)
#define HEAP_END ox::bit_cast<char*>(MEM_EWRAM_BEGIN + HEAP_SIZE)
extern void (*__preinit_array_start[]) (void);
extern void (*__preinit_array_end[]) (void);
extern void (*__init_array_start[]) (void);
extern void (*__init_array_end[]) (void);
int main(int argc, const char **argv);
extern "C" {
void __libc_init_array() {
auto preInits = __preinit_array_end - __preinit_array_start;
for (decltype(preInits) i = 0; i < preInits; i++) {
__preinit_array_start[i]();
}
auto inits = __init_array_end - __init_array_start;
for (decltype(inits) i = 0; i < inits; i++) {
__preinit_array_start[i]();
}
}
int c_start() {
const char *args[2] = {"", "rom.oxfs"};
ox::heapmgr::initHeap(HEAP_BEGIN, HEAP_END);
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpedantic"
return main(2, args);
#pragma GCC diagnostic pop
}
}