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feat: expand user mode, add DOOM game, add manpages

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This commit is contained in:
Daniel Hammer
2026-02-18 15:13:53 +01:00
parent 605fbcbe42
commit 24af60d669
51 changed files with 4484 additions and 43 deletions
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kernel/src/Sched/ElfLoader.cpp
+4 -9
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@@ -52,8 +52,6 @@ namespace Sched {
}
uint64_t ElfLoad(const char* vfsPath, uint64_t pml4Phys) {
Kt::KernelLogStream(Kt::INFO, "ELF") << "Loading " << vfsPath;
int handle = Fs::Vfs::VfsOpen(vfsPath);
if (handle < 0) {
Kt::KernelLogStream(Kt::ERROR, "ELF") << "Failed to open " << vfsPath;
@@ -78,6 +76,10 @@ namespace Sched {
Fs::Vfs::VfsRead(handle, fileData, 0, fileSize);
Fs::Vfs::VfsClose(handle);
// Prevent the optimizer from reordering the VfsRead store past the
// header validation reads that follow.
asm volatile("" ::: "memory");
// Validate ELF header
Elf64Header* hdr = (Elf64Header*)fileData;
if (!ValidateElfHeader(hdr)) {
@@ -85,9 +87,6 @@ namespace Sched {
return 0;
}
Kt::KernelLogStream(Kt::OK, "ELF") << "Entry point: " << kcp::hex << hdr->e_entry << kcp::dec
<< ", " << (uint64_t)hdr->e_phnum << " program header(s)";
// Process program headers
for (uint16_t i = 0; i < hdr->e_phnum; i++) {
Elf64ProgramHeader* phdr = (Elf64ProgramHeader*)(fileData + hdr->e_phoff + i * hdr->e_phentsize);
@@ -100,9 +99,6 @@ namespace Sched {
continue;
}
Kt::KernelLogStream(Kt::INFO, "ELF") << "PT_LOAD: vaddr=" << kcp::hex << phdr->p_vaddr
<< " filesz=" << phdr->p_filesz << " memsz=" << phdr->p_memsz << kcp::dec;
// Allocate pages and map them in the process PML4 with User bit
uint64_t segBase = phdr->p_vaddr & ~0xFFFULL;
uint64_t segEnd = (phdr->p_vaddr + phdr->p_memsz + 0xFFF) & ~0xFFFULL;
@@ -147,7 +143,6 @@ namespace Sched {
uint64_t entryPoint = hdr->e_entry;
Memory::g_heap->Free(fileData);
Kt::KernelLogStream(Kt::OK, "ELF") << "Loaded successfully, entry=" << kcp::hex << entryPoint << kcp::dec;
return entryPoint;
}