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Fixing kernel exported variables.

This commit is contained in:
Ben Vanik 2013-01-28 14:51:23 -08:00
parent 9ad6bb917f
commit 9b0cb94e43
1 changed files with 23 additions and 25 deletions
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48
src/kernel/modules/xboxkrnl/xboxkrnl_module.cc
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@ -25,26 +25,6 @@ using namespace xe::kernel::xboxkrnl;
namespace {
// bit 27 = something?
typedef struct {
uint32_t flags;
uint8_t processor_count;
uint8_t unknown0;
uint8_t unknown1;
uint8_t unknown2;
uint32_t unknown4;
uint16_t unknown5;
uint16_t unknown6;
} XboxHardwareInfo_t;
// XboxHardwareInfo_t XboxHardwareInfo = {
// 0x00000000, 3, 0, 0, 0, 0, 0, 0,
// };
// This should remain zero for now.
// The pointer returned should have a 4b value at 0x58 that is the first
// argument to RtlImageXexHeaderField (header base?)
//uint32_t XexExecutableModuleHandle = 0x00000000;
}
@ -69,17 +49,24 @@ XboxkrnlModule::XboxkrnlModule(xe_pal_ref pal, xe_memory_ref memory,
uint8_t* mem = xe_memory_addr(memory, 0);
// HACK: register some dummy globals for now.
// KeDebugMonitorData
// KeDebugMonitorData (?*)
resolver->SetVariableMapping(
"xboxkrnl.exe", 0x00000059,
0x40001000);
// XboxHardwareInfo
// XboxHardwareInfo (XboxHardwareInfo_t, 16b)
// flags cpu# ? ? ? ? ? ?
// 0x00000000, 0x06, 0x00, 0x00, 0x00, 0x00000000, 0x0000, 0x0000
// Games seem to check if bit 26 (0x20) is set, which at least for xbox1
// was whether an HDD was present. Not sure what the other flags are.
resolver->SetVariableMapping(
"xboxkrnl.exe", 0x00000156,
0x40002000);
0x80100FED);
XESETUINT32BE(mem + 0x80100FED, 0x00000000); // flags
XESETUINT8BE(mem + 0x80100FEE, 0x06); // cpu count
// Remaining 11b are zeroes?
// XexExecutableModuleHandle
// XexExecutableModuleHandle (?**)
// Games try to dereference this to get a pointer to some module struct.
// So far it seems like it's just in loader code, and only used to look up
// the XexHeaderBase for use by RtlImageXexHeaderField.
@ -93,6 +80,17 @@ XboxkrnlModule::XboxkrnlModule(xe_pal_ref pal, xe_memory_ref memory,
0x80100FFC);
XESETUINT32BE(mem + 0x80100FFC, 0x80101000);
XESETUINT32BE(mem + 0x80101058, 0x80101100);
// ExLoadedCommandLine (char*)
// The name of the xex. Not sure this is ever really used on real devices.
// Perhaps it's how swap disc/etc data is sent?
// Always set to "default.xex" (with quotes) for now.
resolver->SetVariableMapping(
"xboxkrnl.exe", 0x000001AE,
0x80102000);
char command_line[] = "\"default.xex\"";
xe_copy_memory(mem + 0x80102000, 1024,
command_line, XECOUNT(command_line) + 1);
}
XboxkrnlModule::~XboxkrnlModule() {