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https://github.com/skyline-emu/skyline.git
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a54f5ff578
This commit introduces a new memory model that supports true shared memory with separate permissions for remote and local processes, implements svcQueryMemory and completes svcGetInfo further, adds IPC support with the IpcRequest and IpcResponse classes.
45 lines
3.0 KiB
C++
45 lines
3.0 KiB
C++
#include <vector>
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#include "nro.h"
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namespace lightSwitch::loader {
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NroLoader::NroLoader(std::string file_path, const device_state &state) : Loader(file_path) {
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NroHeader header{};
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ReadOffset((u32 *) &header, 0x0, sizeof(NroHeader));
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if (header.magic != constant::nro_magic)
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throw exception(fmt::format("Invalid NRO magic! 0x{0:X}", header.magic));
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state.nce->MapSharedRegion(constant::base_addr, header.text.size, {true, true, true}, {true, true, true}, Memory::Type::CodeStatic, Memory::Region::text); // R-X
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state.logger->Write(Logger::DEBUG, "Successfully mapped region .text @ 0x{0:X}, Size = 0x{1:X}", constant::base_addr, header.text.size);
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auto rodata = state.nce->MapSharedRegion(constant::base_addr + header.text.size, header.ro.size, {true, true, false}, {true, false, false}, Memory::Type::CodeReadOnly, Memory::Region::rodata); // R--
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state.logger->Write(Logger::DEBUG, "Successfully mapped region .ro @ 0x{0:X}, Size = 0x{1:X}", constant::base_addr + header.text.size, header.ro.size);
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state.nce->MapSharedRegion(constant::base_addr + header.text.size + header.ro.size, header.data.size, {true, true, false}, {true, true, false}, Memory::Type::CodeStatic, Memory::Region::data); // RW-
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state.logger->Write(Logger::DEBUG, "Successfully mapped region .data @ 0x{0:X}, Size = 0x{1:X}", constant::base_addr + header.text.size + header.ro.size, header.data.size);
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state.nce->MapSharedRegion(constant::base_addr + header.text.size + header.ro.size + header.data.size, header.bssSize, {true, true, true}, {true, true, true}, Memory::Type::CodeMutable, Memory::Region::bss); // RWX
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state.logger->Write(Logger::DEBUG, "Successfully mapped region .bss @ 0x{0:X}, Size = 0x{1:X}", constant::base_addr + header.text.size + header.ro.size + header.data.size, header.bssSize);
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ReadOffset(reinterpret_cast<u8 *>(constant::base_addr), header.text.offset, header.text.size);
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ReadOffset(reinterpret_cast<u8 *>(constant::base_addr + header.text.size), header.ro.offset, header.ro.size);
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ReadOffset(reinterpret_cast<u8 *>(constant::base_addr + header.text.size + header.ro.size), header.data.offset, header.data.size);
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// Replace SVC & MRS with BRK
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auto address = (u32 *) constant::base_addr + header.text.offset;
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size_t text_size = header.text.size / sizeof(u32);
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for (size_t iter = 0; iter < text_size; iter++) {
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auto instr_svc = reinterpret_cast<instr::svc *>(address + iter);
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auto instr_mrs = reinterpret_cast<instr::mrs *>(address + iter);
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if (instr_svc->verify()) {
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instr::brk brk(static_cast<u16>(instr_svc->value));
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address[iter] = *reinterpret_cast<u32 *>(&brk);
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} else if (instr_mrs->verify() && instr_mrs->src_reg == constant::tpidrro_el0) {
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instr::brk brk(static_cast<u16>(constant::svc_last + 1 + instr_mrs->dst_reg));
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address[iter] = *reinterpret_cast<u32 *>(&brk);
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}
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}
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}
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}
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