mirror of
https://github.com/open-goal/jak-project
synced 2026-05-23 06:54:31 -04:00
water111
f9d8fcd6e4
* mips 2 c basic version, not yet tested * calling works without crashing, but the function doesn't * it works * add test * cleanup and actually add the test * dont use mips2c by default for font * clean up formatting
91 lines
2.0 KiB
C++
91 lines
2.0 KiB
C++
#include "mips2c_table.h"
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#include "common/log/log.h"
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#include "game/kernel/kmalloc.h"
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#include "game/kernel/kscheme.h"
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#include "common/symbols.h"
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extern "C" {
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void _mips2c_call_linux();
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void _mips2c_call_windows();
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}
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namespace Mips2C {
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namespace draw_string {
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extern void link();
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}
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LinkedFunctionTable gLinkedFunctionTable;
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std::unordered_map<std::string, std::vector<void (*)()>> gMips2CLinkCallbacks = {
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{"font", {draw_string::link}}};
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void LinkedFunctionTable::reg(const std::string& name, u64 (*exec)(void*), u32 stack_size) {
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const auto& it = m_executes.insert({name, {exec, Ptr<u8>()}});
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if (!it.second) {
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lg::error("MIPS2C Function {} is registered multiple times, ignoring later registrations.",
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name);
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return;
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}
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// this is short stub that will jump to the appropriate function.
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auto jump_to_asm = Ptr<u8>(alloc_heap_object(s7.offset + FIX_SYM_GLOBAL_HEAP,
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*(s7 + FIX_SYM_FUNCTION_TYPE), 0x40, UNKNOWN_PP));
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it.first->second.goal_trampoline = jump_to_asm;
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u8* ptr = jump_to_asm.c();
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{
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// linux
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// push the function
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u64 addr = (u64)exec;
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*ptr = 0x48;
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ptr++;
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*ptr = 0xb8;
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ptr++;
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memcpy(ptr, &addr, 8);
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ptr += 8;
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*ptr = 0x50;
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ptr++;
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// push the stack size
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addr = stack_size;
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*ptr = 0x48;
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ptr++;
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*ptr = 0xb8;
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ptr++;
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memcpy(ptr, &addr, 8);
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ptr += 8;
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*ptr = 0x50;
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ptr++;
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// call the other function
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#ifdef __linux__
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addr = (u64)_mips2c_call_linux;
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#elif _WIN32
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addr = (u64)_mips2c_call_windows;
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#endif
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*ptr = 0x48;
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ptr++;
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*ptr = 0xb8;
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ptr++;
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memcpy(ptr, &addr, 8);
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ptr += 8;
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// jumps to the mips2c call, which will return to the caller of this stub.
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*ptr = 0xff;
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ptr++;
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*ptr = 0xe0;
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}
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}
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u32 LinkedFunctionTable::get(const std::string& name) {
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auto it = m_executes.find(name);
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if (it == m_executes.end()) {
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assert(false);
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}
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return it->second.goal_trampoline.offset;
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}
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} // namespace Mips2C
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