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XMA hardware spoofing when using direct register access.

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This works for recent games that don't use the XMA* methods.
Upcoming CLs will add the XMA* method shims forthcoming.
This commit is contained in:
Ben Vanik
2015-02-16 17:18:07 -08:00
parent b0e62d8aeb
commit 50b0746a26
9 changed files with 383 additions and 56 deletions
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19
src/xenia/kernel/xboxkrnl_memory.cc
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@@ -384,6 +384,24 @@ SHIM_CALL MmGetPhysicalAddress_shim(PPCContext* ppc_state, KernelState* state) {
SHIM_SET_RETURN_32(base_address);
}
SHIM_CALL MmMapIoSpace_shim(PPCContext* ppc_state, KernelState* state) {
uint32_t unk0 = SHIM_GET_ARG_32(0);
uint32_t src_address = SHIM_GET_ARG_32(1); // from MmGetPhysicalAddress
uint32_t size = SHIM_GET_ARG_32(2);
uint32_t flags = SHIM_GET_ARG_32(3);
XELOGD("MmMapIoSpace(%.8X, %.8X, %d, %.8X)", unk0, src_address, size, flags);
// I've only seen this used to map XMA audio contexts.
// The code seems fine with taking the src address, so this just returns that.
// If others start using it there could be problems.
assert_true(unk0 == 2);
assert_true(size == 0x40);
assert_true(flags == 0x404);
SHIM_SET_RETURN_32(src_address);
}
SHIM_CALL ExAllocatePoolTypeWithTag_shim(PPCContext* ppc_state,
KernelState* state) {
uint32_t size = SHIM_GET_ARG_32(0);
@@ -442,6 +460,7 @@ void xe::kernel::xboxkrnl::RegisterMemoryExports(
SHIM_SET_MAPPING("xboxkrnl.exe", MmQueryAllocationSize, state);
SHIM_SET_MAPPING("xboxkrnl.exe", MmQueryStatistics, state);
SHIM_SET_MAPPING("xboxkrnl.exe", MmGetPhysicalAddress, state);
SHIM_SET_MAPPING("xboxkrnl.exe", MmMapIoSpace, state);
SHIM_SET_MAPPING("xboxkrnl.exe", ExAllocatePoolTypeWithTag, state);
SHIM_SET_MAPPING("xboxkrnl.exe", ExFreePool, state);