loading dols

core/loaders/dol.cpp

@@ -0,0 +1,63 @@
+#include <loaders/dol.hpp>
+#include <mem.hpp>
+#include <ircolib/file.hpp>
+#include <ircolib/mem_access.hpp>
+#include <array>
+#include <print>
+
+namespace weee::core {
+bool load_dol(const std::string &path, mem &mem) {
+    auto bin = ircolib::read_file_binary(path);
+    if (bin.size() <= 0)
+        return false;
+
+    struct header {
+        struct section {
+            ircolib::u32 offset, addr, size;
+        };
+        std::array<section, 7> text;
+        std::array<section, 11> data;
+        ircolib::u32 bss_address, bss_size, entry_point;
+    } hdr;
+
+    for (size_t bin_index = 0; bin_index < 0xD8; bin_index += 4) {
+        if (ircolib::is_inside_range_ext(bin_index, 0, 0x1c)) // text file offsets
+            hdr.text[bin_index / 4].offset = std::byteswap(ircolib::read_access<ircolib::u32>(bin, bin_index));
+
+        if (ircolib::is_inside_range_ext(bin_index, 0x1c, 0x48)) // data file offsets
+            hdr.data[(bin_index - 0x1c) / 4].offset = std::byteswap(ircolib::read_access<ircolib::u32>(bin, bin_index));
+
+        if (ircolib::is_inside_range_ext(bin_index, 0x48, 0x64)) // text loading addresses
+            hdr.text[(bin_index - 0x48) / 4].addr = std::byteswap(ircolib::read_access<ircolib::u32>(bin, bin_index));
+
+        if (ircolib::is_inside_range_ext(bin_index, 0x64, 0x90)) // data loading addresses
+            hdr.data[(bin_index - 0x64) / 4].addr = std::byteswap(ircolib::read_access<ircolib::u32>(bin, bin_index));
+
+        if (ircolib::is_inside_range_ext(bin_index, 0x90, 0xac)) // text sizes
+            hdr.text[(bin_index - 0x90) / 4].size = std::byteswap(ircolib::read_access<ircolib::u32>(bin, bin_index));
+
+        if (ircolib::is_inside_range_ext(bin_index, 0xac, 0xd8)) // data sizes
+            hdr.data[(bin_index - 0xac) / 4].size = std::byteswap(ircolib::read_access<ircolib::u32>(bin, bin_index));
+    }
+
+    hdr.bss_address = std::byteswap(ircolib::read_access<ircolib::u32>(bin, 0xD8));
+    hdr.bss_size = std::byteswap(ircolib::read_access<ircolib::u32>(bin, 0xDC));
+    mem.set(0, hdr.bss_size, hdr.bss_address & 0x0FFFFFFF);
+
+    hdr.entry_point = std::byteswap(ircolib::read_access<ircolib::u32>(bin, 0xE0));
+
+    for (const auto &section : hdr.text) {
+        if (section.offset == 0)
+            continue;
+        mem.copy(&bin[section.offset], section.size, section.addr & 0x0FFFFFFF);
+    }
+
+    for (const auto &section : hdr.data) {
+        if (section.offset == 0)
+            continue;
+        mem.copy(&bin[section.offset], section.size, section.addr & 0x0FFFFFFF);
+    }
+
+    return true;
+}
+} // namespace weee::core

core/loaders/dol.hpp

@@ -0,0 +1,9 @@
+#pragma once
+#include <ircolib/types.hpp>
+#include <string>
+
+namespace weee::core {
+struct mem;
+
+bool load_dol(const std::string &, mem &);
+} // namespace weee::core

core/loaders/elf.cpp

@@ -0,0 +1,48 @@
+#include <loaders/elf.hpp>
+#include <mem.hpp>
+#include <elfio/elfio.hpp>
+#include <print>
+
+namespace weee::core {
+bool load_elf(const std::string &path, mem &mem) {
+    ELFIO::elfio reader;
+    if (!reader.load(path))
+        return false;
+
+    size_t sanity_bss_check_count = 0;
+
+    for (const auto &segment : reader.segments) {
+        const auto segment_type = segment->get_type();
+        if (segment_type != ELFIO::PT_LOAD && segment_type != ELFIO::PT_TLS && segment_type != ELFIO::PT_NOTE)
+            continue;
+
+        if (segment->get_memory_size() == 0)
+            continue;
+
+        const bool exc = segment->get_flags() & ELFIO::PF_X;
+        const bool rd = segment->get_flags() & ELFIO::PF_R;
+        const bool wr = segment->get_flags() & ELFIO::PF_W;
+
+        std::println("Segment {} {}{}{} @ 0x{:08X} -> 0x{:08X}", segment->get_index(), rd ? 'R' : '_', wr ? 'W' : '_',
+                     exc ? 'X' : '_', segment->get_virtual_address(),
+                     segment->get_virtual_address() + segment->get_memory_size() - 1);
+
+        if (segment->get_file_size() == 0) {
+            sanity_bss_check_count++;
+            if (sanity_bss_check_count > 1) {
+                std::println("weee does not support multiple .bss segments");
+                return -2;
+            }
+
+            // .bss we zero out
+            mem.set(0, segment->get_memory_size(), segment->get_virtual_address() & 0x0FFFFFFF);
+            continue;
+        }
+
+        mem.copy((const ircolib::u8 *)segment->get_data(), segment->get_file_size(),
+                 segment->get_virtual_address() & 0x0FFFFFFF);
+    }
+
+    return true;
+}
+} // namespace weee::core

core/loaders/elf.hpp

@@ -0,0 +1,9 @@
+#pragma once
+#include <ircolib/types.hpp>
+#include <string>
+
+namespace weee::core {
+struct mem;
+
+bool load_elf(const std::string &, mem &);
+} // namespace weee::core