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added hack to allow physical mem read/writes

This commit is contained in:
bunnei 2014-04-03 22:04:50 -04:00
parent cbd1de38be
commit 829952834a
1 changed files with 20 additions and 2 deletions
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22
src/core/src/mem_map_funcs.cpp
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@ -41,11 +41,19 @@ inline void ReadFromHardware(T &var, const u32 addr) {
// Scratchpad memory // Scratchpad memory
} else if (addr > MEM_SCRATCHPAD_VADDR && addr <= (MEM_SCRATCHPAD_VADDR + MEM_SCRATCHPAD_SIZE)) { } else if (addr > MEM_SCRATCHPAD_VADDR && addr <= (MEM_SCRATCHPAD_VADDR + MEM_SCRATCHPAD_SIZE)) {
var = *((const T*)&g_scratchpad[addr & MEM_SCRATCHPAD_MASK]); var = *((const T*)&g_scratchpad[addr & MEM_SCRATCHPAD_MASK]);
}
/*else if ((addr & 0x3F800000) == 0x04000000) { /*else if ((addr & 0x3F800000) == 0x04000000) {
var = *((const T*)&m_pVRAM[addr & VRAM_MASK]); var = *((const T*)&m_pVRAM[addr & VRAM_MASK]);
}*/ }*/
else {
// HACK(bunnei): There is no layer yet to translate virtual addresses to physical addresses.
// Until we progress far enough along, we'll accept all physical address reads here. I think
// that this is typically a corner-case from usermode software unless they are trying to do
// bare-metal things (e.g. early 3DS homebrew writes directly to the FB @ 0x20184E60, etc.
} else if (((addr & 0xF0000000) == MEM_FCRAM_PADDR) && (addr < (MEM_FCRAM_PADDR_END))) {
var = *((const T*)&g_fcram[addr & MEM_FCRAM_MASK]);
} else {
_assert_msg_(MEMMAP, false, "unknown hardware read"); _assert_msg_(MEMMAP, false, "unknown hardware read");
// WARN_LOG(MEMMAP, "ReadFromHardware: Invalid addr %08x PC %08x LR %08x", addr, currentMIPS->pc, currentMIPS->r[MIPS_REG_RA]); // WARN_LOG(MEMMAP, "ReadFromHardware: Invalid addr %08x PC %08x LR %08x", addr, currentMIPS->pc, currentMIPS->r[MIPS_REG_RA]);
} }
@ -73,6 +81,7 @@ inline void WriteToHardware(u32 addr, const T data) {
// heap size... the following is writing to FCRAM + 0, which is actually supposed to be the // heap size... the following is writing to FCRAM + 0, which is actually supposed to be the
// application's GSP heap // application's GSP heap
*(T*)&g_fcram[addr & MEM_FCRAM_MASK] = data; *(T*)&g_fcram[addr & MEM_FCRAM_MASK] = data;
} else if ((addr & 0xFF000000) == 0x14000000) { } else if ((addr & 0xFF000000) == 0x14000000) {
_assert_msg_(MEMMAP, false, "umimplemented write to GSP heap"); _assert_msg_(MEMMAP, false, "umimplemented write to GSP heap");
} else if ((addr & 0xFFF00000) == 0x1EC00000) { } else if ((addr & 0xFFF00000) == 0x1EC00000) {
@ -85,6 +94,15 @@ inline void WriteToHardware(u32 addr, const T data) {
_assert_msg_(MEMMAP, false, "umimplemented write to Configuration Memory"); _assert_msg_(MEMMAP, false, "umimplemented write to Configuration Memory");
} else if ((addr & 0xFFFFF000) == 0x1FF81000) { } else if ((addr & 0xFFFFF000) == 0x1FF81000) {
_assert_msg_(MEMMAP, false, "umimplemented write to shared page"); _assert_msg_(MEMMAP, false, "umimplemented write to shared page");
// HACK(bunnei): There is no layer yet to translate virtual addresses to physical addresses.
// Until we progress far enough along, we'll accept all physical address writes here. I think
// that this is typically a corner-case from usermode software unless they are trying to do
// bare-metal things (e.g. early 3DS homebrew writes directly to the FB @ 0x20184E60, etc.
} else if (((addr & 0xF0000000) == MEM_FCRAM_PADDR) && (addr < (MEM_FCRAM_PADDR_END))) {
*(T*)&g_fcram[addr & MEM_FCRAM_MASK] = data;
// Error out...
} else { } else {
_assert_msg_(MEMMAP, false, "unknown hardware write"); _assert_msg_(MEMMAP, false, "unknown hardware write");
} }