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Memory.c and VirtualMemory.c replace their C++ originals: the memory managers, bump allocator and reserves are plain structs and functions, SysMainMemory is a struct, the host memory map is HOSTMEM_ constants, and the GS JIT's code reserve is GSCodeReserve.c. The vtlb, GS, DEV9, CDVD NVRAM, IOP and MTVU entry points Memory.c calls carry C linkage; the EE hardware handler sets are registered from Dmac.cpp, so Hw.cpp's handlers stay as they are. memBindConditionalHandlers takes the INTC_STAT hack and MTVU setting and binds VU1's memory handlers for them, so no handler tests the configuration per access, and MTVU writes store straight into their ring slot. The main and code maps are placed together by near_place_pair: the shared-memory backing is created once, a taken address fails with one MAP_FIXED_NOREPLACE call, the bases next to the image are tried before the address space is read, and it is read at most once.
67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
/* The software renderer's code-generator map over the real GSCodeReserve,
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* with a stand-in generator, for main.c. A key's low 32 bits name the
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* function and its high 32 bits the bytes it takes; the generator writes
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* the name's low byte over them, and like the real generator's emitter
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* stops writing at the end of the room it is given. */
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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 "GS/Renderers/Common/GSFunctionMap.h"
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static void gsjit_log(enum retro_log_level level, const char* fmt, ...)
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{
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va_list ap;
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(void)level;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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}
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extern "C" retro_log_printf_t log_cb = gsjit_log;
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typedef const u8* FakeFn;
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struct FakeCG
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{
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u8* m_code;
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size_t m_size;
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FakeCG(u64 key, void* code, size_t room)
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: m_code(static_cast<u8*>(code))
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{
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const size_t want = (size_t)(key >> 32);
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m_size = want < room ? want : room;
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memset(m_code, (int)(key & 0xff), m_size);
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}
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size_t getSize() const { return m_size; }
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const u8* getCode() const { return m_code; }
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};
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static GSCodeGeneratorFunctionMap<FakeCG, u64, FakeFn> s_map;
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extern "C" void gsjit_assign(unsigned char* base, size_t size)
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{
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g_gs_code_reserve.reserve.baseptr = base;
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g_gs_code_reserve.reserve.size = size;
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g_gs_code_reserve.reserve.allocator = NULL;
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gs_code_reserve_reset();
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}
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extern "C" const unsigned char* gsjit_get(unsigned long long key)
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{
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return s_map[key];
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}
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/* What GSDrawScanline::ResetCodeCache does. */
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extern "C" void gsjit_reset(void)
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{
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s_map.Clear();
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gs_code_reserve_reset();
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}
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extern "C" void gsjit_release(void)
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{
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s_map.Clear();
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code_reserve_init(&g_gs_code_reserve.reserve);
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}
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