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https://github.com/wiiu-env/PatchMemoryRelocationsModule.git
synced 2024-11-14 05:55:09 +01:00
Use latest WUMS version, fix spelling of trampoline
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@ -1,6 +1,6 @@
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FROM wiiuenv/devkitppc:20211229
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COPY --from=wiiuenv/libmappedmemory:20210924 /artifacts $DEVKITPRO
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COPY --from=wiiuenv/wiiumodulesystem:20220123 /artifacts $DEVKITPRO
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COPY --from=wiiuenv/wiiumodulesystem:20220127 /artifacts $DEVKITPRO
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WORKDIR project
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@ -10,7 +10,7 @@ WUMS_MODULE_EXPORT_NAME("homebrew_patchmemoryrelocations");
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WUMS_MODULE_INIT_BEFORE_RELOCATION_DONE_HOOK();
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WUMS_MODULE_SKIP_INIT_FINI();
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bool elfLinkOne(char type, size_t offset, int32_t addend, uint32_t destination, uint32_t symbol_addr, relocation_trampolin_entry_t *trampolin_data, uint32_t trampolin_data_length,
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bool elfLinkOne(char type, size_t offset, int32_t addend, uint32_t destination, uint32_t symbol_addr, relocation_trampoline_entry_t *trampoline_data, uint32_t trampoline_data_length,
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RelocationType reloc_type);
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WUMS_RELOCATIONS_DONE(args) {
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@ -71,7 +71,7 @@ WUMS_RELOCATIONS_DONE(args) {
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#define R_PPC_GHS_REL16_LO 253
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// See https://github.com/decaf-emu/decaf-emu/blob/43366a34e7b55ab9d19b2444aeb0ccd46ac77dea/src/libdecaf/src/cafe/loader/cafe_loader_reloc.cpp#L144
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bool elfLinkOne(char type, size_t offset, int32_t addend, uint32_t destination, uint32_t symbol_addr, relocation_trampolin_entry_t *trampolin_data, uint32_t trampolin_data_length,
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bool elfLinkOne(char type, size_t offset, int32_t addend, uint32_t destination, uint32_t symbol_addr, relocation_trampoline_entry_t *trampoline_data, uint32_t trampoline_data_length,
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RelocationType reloc_type) {
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if (type == R_PPC_NONE) {
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return true;
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@ -140,42 +140,42 @@ bool elfLinkOne(char type, size_t offset, int32_t addend, uint32_t destination,
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// }
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auto distance = static_cast<int32_t>(value) - static_cast<int32_t>(target);
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if (distance > 0x1FFFFFC || distance < -0x1FFFFFC) {
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if (trampolin_data == nullptr) {
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if (trampoline_data == nullptr) {
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DEBUG_FUNCTION_LINE("***24-bit relative branch cannot hit target. Trampoline isn't provided\n");
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DEBUG_FUNCTION_LINE("***value %08X - target %08X = distance %08X\n", value, target, distance);
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return false;
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} else {
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relocation_trampolin_entry_t *freeSlot = nullptr;
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for (uint32_t i = 0; i < trampolin_data_length; i++) {
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relocation_trampoline_entry_t *freeSlot = nullptr;
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for (uint32_t i = 0; i < trampoline_data_length; i++) {
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// We want to override "old" relocations of imports
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// Pending relocations have the status RELOC_TRAMP_IMPORT_IN_PROGRESS.
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// When all relocations are done successfully, they will be turned into RELOC_TRAMP_IMPORT_DONE
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// so they can be overridden/updated/reused on the next application launch.
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//
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// Relocations that won't change will have the status RELOC_TRAMP_FIXED and are set to free when the module is unloaded.
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if (trampolin_data[i].status == RELOC_TRAMP_FREE ||
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trampolin_data[i].status == RELOC_TRAMP_IMPORT_DONE) {
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freeSlot = &(trampolin_data[i]);
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if (trampoline_data[i].status == RELOC_TRAMP_FREE ||
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trampoline_data[i].status == RELOC_TRAMP_IMPORT_DONE) {
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freeSlot = &(trampoline_data[i]);
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break;
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}
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}
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if (freeSlot == nullptr) {
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DEBUG_FUNCTION_LINE("***24-bit relative branch cannot hit target. Trampolin data list is full\n");
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DEBUG_FUNCTION_LINE("***24-bit relative branch cannot hit target. Trampoline data list is full\n");
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DEBUG_FUNCTION_LINE("***value %08X - target %08X = distance %08X\n", value, target, distance);
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return false;
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}
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if (target - (uint32_t) &(freeSlot->trampolin[0]) > 0x1FFFFFC) {
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if (target - (uint32_t) &(freeSlot->trampoline[0]) > 0x1FFFFFC) {
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DEBUG_FUNCTION_LINE("**Cannot link 24-bit jump (too far to tramp buffer).");
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DEBUG_FUNCTION_LINE("***value %08X - target %08X = distance %08X\n", value, target, distance);
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return false;
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}
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freeSlot->trampolin[0] = 0x3D600000 | ((((uint32_t) value) >> 16) & 0x0000FFFF); // lis r11, real_addr@h
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freeSlot->trampolin[1] = 0x616B0000 | (((uint32_t) value) & 0x0000ffff); // ori r11, r11, real_addr@l
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freeSlot->trampolin[2] = 0x7D6903A6; // mtctr r11
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freeSlot->trampolin[3] = 0x4E800420; // bctr
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DCFlushRange((void *) freeSlot->trampolin, sizeof(freeSlot->trampolin));
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ICInvalidateRange((unsigned char *) freeSlot->trampolin, sizeof(freeSlot->trampolin));
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freeSlot->trampoline[0] = 0x3D600000 | ((((uint32_t) value) >> 16) & 0x0000FFFF); // lis r11, real_addr@h
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freeSlot->trampoline[1] = 0x616B0000 | (((uint32_t) value) & 0x0000ffff); // ori r11, r11, real_addr@l
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freeSlot->trampoline[2] = 0x7D6903A6; // mtctr r11
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freeSlot->trampoline[3] = 0x4E800420; // bctr
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DCFlushRange((void *) freeSlot->trampoline, sizeof(freeSlot->trampoline));
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ICInvalidateRange((unsigned char *) freeSlot->trampoline, sizeof(freeSlot->trampoline));
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if (reloc_type == RELOC_TYPE_FIXED) {
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freeSlot->status = RELOC_TRAMP_FIXED;
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@ -183,7 +183,7 @@ bool elfLinkOne(char type, size_t offset, int32_t addend, uint32_t destination,
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// Relocations for the imports may be overridden
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freeSlot->status = RELOC_TRAMP_IMPORT_IN_PROGRESS;
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}
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uint32_t symbolValue = (uint32_t) &(freeSlot->trampolin[0]);
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uint32_t symbolValue = (uint32_t) &(freeSlot->trampoline[0]);
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value = symbolValue + addend;
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distance = static_cast<int32_t>(value) - static_cast<int32_t>(target);
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DEBUG_FUNCTION_LINE("Created tramp\n");
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