XUserModule::GetOptHeader

This commit is contained in:
Dr. Chat 2015-06-27 22:41:09 -05:00
parent cdbf736241
commit 8a6c620fe7
5 changed files with 54 additions and 32 deletions

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@ -22,14 +22,9 @@ namespace kernel {
using namespace xe::cpu;
XUserModule::XUserModule(KernelState* kernel_state, const char* path)
: XModule(kernel_state, ModuleType::kUserModule, path),
xex_(nullptr),
execution_info_ptr_(0) {}
: XModule(kernel_state, ModuleType::kUserModule, path), xex_(nullptr) {}
XUserModule::~XUserModule() {
kernel_state()->memory()->SystemHeapFree(execution_info_ptr_);
xe_xex2_dealloc(xex_);
}
XUserModule::~XUserModule() { xe_xex2_dealloc(xex_); }
xe_xex2_ref XUserModule::xex() { return xex_; }
@ -114,7 +109,7 @@ X_STATUS XUserModule::LoadFromMemory(const void* addr, const size_t length) {
auto ldr_data =
memory()->TranslateVirtual<X_LDR_DATA_TABLE_ENTRY*>(hmodule_ptr_);
ldr_data->dll_base = 0; // GetProcAddress will read this.
ldr_data->dll_base = 0; // GetProcAddress will read this.
ldr_data->xex_header_base = xex_header_;
// Prepare the module for execution.
@ -156,6 +151,24 @@ X_STATUS XUserModule::GetSection(const char* name, uint32_t* out_section_data,
return X_STATUS_UNSUCCESSFUL;
}
X_STATUS XUserModule::GetOptHeader(xe_xex2_header_keys key,
uint32_t* out_header_guest_ptr) {
assert_not_null(out_header_guest_ptr);
auto header = memory()->TranslateVirtual<xex2_header*>(xex_header_);
if (!header) {
return X_STATUS_UNSUCCESSFUL;
}
auto ptr = xex2_get_opt_header(header, key);
if (!ptr) {
return X_STATUS_NOT_FOUND;
}
*out_header_guest_ptr = (uint32_t)(ptr - memory()->virtual_membase());
return X_STATUS_SUCCESS;
}
X_STATUS XUserModule::Launch(uint32_t flags) {
const xe_xex2_header_t* header = xex_header();

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@ -35,6 +35,7 @@ class XUserModule : public XModule {
uint32_t GetProcAddressByName(const char* name) override;
X_STATUS GetSection(const char* name, uint32_t* out_section_data,
uint32_t* out_section_size) override;
X_STATUS GetOptHeader(xe_xex2_header_keys key, uint32_t* out_header_guest_ptr);
X_STATUS Launch(uint32_t flags);

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@ -29,7 +29,26 @@
namespace xe {
namespace kernel {
uint32_t xex2_get_header_size(const xex2_header* header) {
uint8_t* xex2_get_opt_header(const xex2_header* header, uint32_t key) {
for (uint32_t i = 0; i < header->header_count; i++) {
const xex2_opt_header& opt_header = header->headers[i];
if (opt_header.key != key) {
continue;
}
if ((opt_header.key & 0xFF) == 0x01) {
// Data is stored in the opt header
return (uint8_t*)&opt_header.value;
} else {
// Data stored at offset.
return ((uint8_t*)&header->headers[0] + opt_header.offset);
}
}
return nullptr;
}
uint32_t xex2_get_header_size(const xex2_header *header) {
return header->exe_offset;
}
} // namespace kernel

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@ -15,29 +15,11 @@
namespace xe {
namespace kernel {
template <typename T>
T* xex2_get_opt_header(const xex2_header* header, uint32_t key) {
for (uint32_t i = 0; i < header->header_count; i++) {
const xex2_opt_header& opt_header = header->headers[i];
if (opt_header.key != key) {
continue;
}
if ((opt_header.key & 0xFF) == 0x01) {
// Data is stored in the opt header
return (T*)&opt_header.value;
} else {
// Data stored at offset.
return (T*)((uint8_t*)&header->headers[0] + opt_header.offset);
}
}
return nullptr;
}
uint8_t* xex2_get_opt_header(const xex2_header* header, uint32_t key);
uint32_t xex2_get_header_size(const xex2_header* header);
} // namespace kernel
} // namespace xe
} // namespace kernel
} // namespace xe
typedef struct { int reserved; } xe_xex2_options_t;

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@ -77,9 +77,16 @@ SHIM_CALL XamGetExecutionId_shim(PPCContext* ppc_context,
auto module = kernel_state->GetExecutableModule();
assert_not_null(module);
SHIM_SET_MEM_32(info_ptr, module->execution_info_ptr());
uint32_t guest_hdr_ptr;
X_STATUS result = module->GetOptHeader(XEX_HEADER_EXECUTION_INFO, &guest_hdr_ptr);
SHIM_SET_RETURN_32(0);
if (XFAILED(result)) {
SHIM_SET_RETURN_32(result);
return;
}
SHIM_SET_MEM_32(info_ptr, guest_hdr_ptr);
SHIM_SET_RETURN_32(X_STATUS_SUCCESS);
}
SHIM_CALL XamLoaderSetLaunchData_shim(PPCContext* ppc_context,