diff --git a/.buckconfig b/.buckconfig deleted file mode 100644 index 9b80747..0000000 --- a/.buckconfig +++ /dev/null @@ -1,45 +0,0 @@ -[cells] - root = . - prelude = prelude - toolchains = toolchains - third-party = third-party - none = none - -[cell_aliases] - config = prelude - ovr_config = prelude - fbcode = none - fbsource = none - fbcode_macros = none - buck = none - -# Uses a copy of the prelude bundled with the buck2 binary. You can alternatively delete this -# section and vendor a copy of the prelude to the `prelude` directory of your project. -[external_cells] - prelude = bundled - -[parser] - target_platform_detector_spec = target:root//...->prelude//platforms:default \ - target:prelude//...->prelude//platforms:default \ - target:toolchains//...->prelude//platforms:default - -[build] - execution_platforms = prelude//platforms:default - -[buck2] -#file_watcher = watchman -test_builds_targets = true -digest_algorithms = SHA256 -log_total_configured_graph_sketch = true -log_total_configured_graph_unconfigured_sketch = true -log_configured_graph_unconfigured_sketch = true -defer_write_actions = true -restarter = true -check_starlark_peak_memory = true -starlark_max_callstack_size = 50 - -default_starlark_peak_memory = 5242880 - -[buck2_resource_control] -status = if_available -enable_suspension = true diff --git a/.buckroot b/.buckroot deleted file mode 100644 index e69de29..0000000 diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index aa13217..685fe7f 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -1,22 +1,16 @@ name: CI -on: [push, pull_request] +on: [pull_request, merge_group] jobs: - build: - runs-on: ubuntu-latest - steps: - - uses: actions/checkout@v6 - - - name: Install Nix - uses: cachix/install-nix-action@v31 - with: - nix_path: nixpkgs=channel:nixos-unstable - - - name: Build Kernel - run: nix build .#kernel - - - name: Build Host Tools - run: | - nix build .#ipsw - nix build .#gravity-setup - nix build .#linker-wrapper + build: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v6 + - uses: dtolnay/rust-toolchain@master + with: + toolchain: nightly + components: rustfmt, clippy, rust-src + targets: aarch64-unknown-none-softfloat + - run: cargo fmt --all -- --check + - run: cargo clippy --workspace --exclude kernel --exclude dyld + - run: cargo clippy --workspace --target aarch64-unknown-none-softfloat -p kernel -p dyld diff --git a/.gitignore b/.gitignore index 563e7c3..23d19c6 100644 --- a/.gitignore +++ b/.gitignore @@ -10,3 +10,4 @@ compile_commands.json /work /result /result-* +src/kernel/src/rust_dyld.bin diff --git a/BUCK b/BUCK deleted file mode 100644 index 2c3c065..0000000 --- a/BUCK +++ /dev/null @@ -1,4 +0,0 @@ -export_file( - name = "disk.img", - visibility = ["PUBLIC"], -) diff --git a/CLAUDE.md b/CLAUDE.md index bb678fc..2374b5c 100644 --- a/CLAUDE.md +++ b/CLAUDE.md @@ -10,25 +10,18 @@ GravityOS is a Rust-based operating system and kernel targeting ARM64 (aarch64-u ### Prerequisites -- Rust nightly toolchain with `aarch64-unknown-none-softfloat` target -- QEMU (qemu-system-aarch64) for emulation -- Buck2 and Reindeer +- Nix ### Building the Kernel ```bash -# Build the kernel -./tools/buck2 build //src/kernel:kernel --target-platforms //platforms:kernel-arm64 +nix build -v .#kernel ``` ### Running the Kernel ```bash -# Build the disk image -./tools/buck2 run //src/setup:setup - -# Run the kernel in QEMU -./tools/buck2 run //src/setup:run_qemu --target-platforms //platforms:kernel-arm64 +nix run ``` ## Workspace Structure diff --git a/Cargo.lock b/Cargo.lock index 860ef01..6cca5d0 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -415,10 +415,9 @@ dependencies = [ name = "dyld" version = "0.1.0" dependencies = [ - "bitflags 2.10.0", "goblin", "linked_list_allocator", - "spin", + "loader", ] [[package]] @@ -1069,6 +1068,7 @@ dependencies = [ "rand_chacha", "rand_core", "spin", + "zstd-safe", ] [[package]] @@ -1108,6 +1108,14 @@ version = "0.8.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "6373607a59f0be73a39b6fe456b8192fcc3585f602af20751600e974dd455e77" +[[package]] +name = "loader" +version = "0.1.0" +dependencies = [ + "goblin", + "thiserror", +] + [[package]] name = "lock_api" version = "0.4.14" diff --git a/Cargo.toml b/Cargo.toml index c640de5..853c527 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -5,6 +5,7 @@ members = [ "src/tools/gravity-setup", "src/tools/linker-wrapper", "src/lib/dyld", + "src/lib/loader", "src/lib/vfdecrypt", "src/lib/ipsw-downloader", "src/lib/hfsplus", @@ -17,14 +18,28 @@ version = "0.1.0" [workspace.dependencies] thiserror = { version = "2.0.18", default-features = false } -reqwest = { version = "0.13.1", default-features = false, features = ["native-tls", "stream", "http2"] } -goblin = { version = "0.10.4", default-features = false, features = ["endian_fd", "alloc", "mach32", "mach64"] } +reqwest = { version = "0.13.1", default-features = false, features = [ + "native-tls", + "stream", + "http2", +] } +goblin = { version = "0.10.4", default-features = false, features = [ + "endian_fd", + "alloc", + "mach32", + "mach64", + "elf32", + "elf64", +] } linked_list_allocator = "0.10.5" spin = "0.10.0" plist = "1.8.0" serde = { version = "1.0.228", default-features = false, features = ["derive"] } tokio = { version = "1.49.0", default-features = false } -clap = { version = "4.5.55", features = ["derive", "std"], default-features = false } +clap = { version = "4.5.55", features = [ + "derive", + "std", +], default-features = false } aes = "0.8.4" hmac = "0.12.1" sha1 = "0.10.6" @@ -37,7 +52,10 @@ byteorder = "1.5" bitflags = { version = "2.10.0", default-features = false } libc = { version = "0.2.180", default-features = false } xattr = "1.6.1" -rustix = { version = "1.1.3", default-features = false, features = ["fs", "std"] } +rustix = { version = "1.1.3", default-features = false, features = [ + "fs", + "std", +] } errno = { version = "0.3.14", default-features = false } zip = "=7.3.0-pre1" rayon = "1.11" @@ -54,10 +72,13 @@ crc32fast = "1.5" hashbrown = "0.16" memmap2 = "0.9" binrw = { version = "0.15.0", default-features = false } -zlib-rs = { version = "0.6.0", default-features = false, features = ["__internal-api"] } +zlib-rs = { version = "0.6.0", default-features = false, features = [ + "__internal-api", +] } rand_core = { version = "0.9.5", default-features = false } rand_chacha = { version = "0.9.0", default-features = false } lzma-rust2 = { version = "=0.15.7", default-features = false } +zstd-safe = { version = "7.2.4", default-features = false } [profile.dev] panic = "abort" diff --git a/flake.lock b/flake.lock deleted file mode 100644 index 9866905..0000000 --- a/flake.lock +++ /dev/null @@ -1,42 +0,0 @@ -{ - "nodes": { - "crane": { - "locked": { - "lastModified": 1769287525, - "narHash": "sha256-gABuYA6BzoRMLuPaeO5p7SLrpd4qExgkwEmYaYQY4bM=", - "owner": "ipetkov", - "repo": "crane", - "rev": "0314e365877a85c9e5758f9ea77a9972afbb4c21", - "type": "github" - }, - "original": { - "owner": "ipetkov", - "repo": "crane", - "type": "github" - } - }, - "nixpkgs": { - "locked": { - "lastModified": 1769636603, - "narHash": "sha256-ePjFF9ryxJGp0Z4cjUESWzz5kcInVLLC2yZWqTOiXxQ=", - "owner": "nixos", - "repo": "nixpkgs", - "rev": "043e5f65faeecd76055541795fa3604f312929f5", - "type": "github" - }, - "original": { - "owner": "nixos", - "repo": "nixpkgs", - "type": "github" - } - }, - "root": { - "inputs": { - "crane": "crane", - "nixpkgs": "nixpkgs" - } - } - }, - "root": "root", - "version": 7 -} diff --git a/flake.nix b/flake.nix deleted file mode 100644 index 1e644a4..0000000 --- a/flake.nix +++ /dev/null @@ -1,236 +0,0 @@ -{ - description = "Gravity OS development environment"; - - inputs = { - nixpkgs.url = "github:nixos/nixpkgs"; - crane.url = "github:ipetkov/crane"; - }; - - outputs = - { - self, - nixpkgs, - crane, - }: - let - supportedSystems = [ - "x86_64-linux" - "aarch64-linux" - "riscv64-linux" - "x86_64-darwin" - "aarch64-darwin" - ]; - forAllSystems = nixpkgs.lib.genAttrs supportedSystems; - pkgsFor = - system: - import nixpkgs { - inherit system; - }; - in - { - packages = forAllSystems ( - system: - let - pkgs = pkgsFor system; - useLld = - stdenv: - stdenv.override (prev: { - allowedRequisites = null; - cc = prev.cc.override { - bintools = prev.cc.bintools.override { - extraBuildCommands = '' - ln -fs ${pkgs.buildPackages.lld}/bin/* "$out/bin" - ''; - }; - }; - }); - - nativeCraneLib = crane.mkLib pkgs; - - pkgsCross = import nixpkgs { - inherit system; - crossSystem = { - config = "aarch64-unknown-none-elf"; - useLLVM = true; - linker = "lld"; - libc = null; - rust.rustcTarget = "aarch64-unknown-none-softfloat"; - }; - }; - crossCraneLib = crane.mkLib pkgsCross; - - commonArgs = { - src = self; - strictDeps = true; - doCheck = false; - }; - - callPackage = pkgs.lib.callPackageWith ( - pkgs - // { - commonArgs = commonArgs; - } - ); - in - { - kernel = callPackage ./src/kernel/package.nix { - craneLib = crossCraneLib; - stdenv = useLld pkgsCross.stdenv; - }; - - dyld = callPackage ./src/lib/dyld/package.nix { - craneLib = crossCraneLib; - stdenv = useLld pkgsCross.stdenv; - }; - - ipsw = callPackage ./src/tools/ipsw/package.nix { - craneLib = nativeCraneLib; - }; - - gravity-setup = callPackage ./src/tools/gravity-setup/package.nix { - craneLib = nativeCraneLib; - }; - - linker-wrapper = callPackage ./src/tools/linker-wrapper/package.nix { - craneLib = nativeCraneLib; - }; - - vfdecrypt = callPackage ./src/lib/vfdecrypt/package.nix { - craneLib = nativeCraneLib; - }; - - ipsw-downloader = callPackage ./src/lib/ipsw-downloader/package.nix { - craneLib = nativeCraneLib; - }; - - hfsplus = callPackage ./src/lib/hfsplus/package.nix { - craneLib = nativeCraneLib; - }; - - apple-dmg = callPackage ./src/lib/apple-dmg/package.nix { - craneLib = nativeCraneLib; - }; - - default = self.packages.${system}.kernel; - } - ); - - devShells = forAllSystems ( - system: - let - pkgs = pkgsFor system; - in - with pkgs; - { - default = mkShell { - nativeBuildInputs = [ - rustc - cargo - cargo-edit - rustfmt - rust-analyzer - clippy - qemu - mtools - pkg-config - nixfmt - pkg-config - nix-output-monitor - rust-bindgen - watchman - jujutsu - gitMinimal - ] - ++ lib.optionals stdenv.isDarwin [ - darwin.apple_sdk.frameworks.Security - darwin.apple_sdk.frameworks.SystemConfiguration - ]; - - buildInputs = [ - aws-lc - ]; - - OPENSSL_DIR = aws-lc.dev; - OPENSSL_LIB_DIR = "${aws-lc}/lib"; - }; - } - ); - - checks = forAllSystems ( - system: - let - pkgs = pkgsFor system; - useLld = - stdenv: - stdenv.override (prev: { - allowedRequisites = null; - cc = prev.cc.override { - bintools = prev.cc.bintools.override { - extraBuildCommands = '' - ln -fs ${pkgs.buildPackages.lld}/bin/* "$out/bin" - ''; - }; - }; - }); - nativeCraneLib = crane.mkLib pkgs; - pkgsCross = import nixpkgs { - inherit system; - crossSystem = { - config = "aarch64-unknown-none-elf"; - useLLVM = true; - linker = "lld"; - libc = null; - rust.rustcTarget = "aarch64-unknown-none-softfloat"; - }; - }; - crossCraneLib = crane.mkLib pkgsCross; - commonArgs = { - src = self; - strictDeps = true; - doCheck = false; - nativeBuildInputs = [ - pkgs.pkg-config - pkgs.rust-bindgen - pkgs.buildPackages.clang - ]; - buildInputs = [ - pkgs.aws-lc - ]; - OPENSSL_DIR = pkgs.aws-lc.dev; - OPENSSL_LIB_DIR = "${pkgs.aws-lc}/lib"; - }; - - nativeArtifacts = nativeCraneLib.buildDepsOnly ( - commonArgs - // { - cargoExtraArgs = "--workspace --exclude kernel --exclude dyld"; - } - ); - - crossArtifacts = crossCraneLib.buildDepsOnly ( - commonArgs - // { - cargoExtraArgs = "--package kernel --package dyld"; - } - ); - in - { - clippy = nativeCraneLib.cargoClippy ( - commonArgs - // { - cargoArtifacts = nativeArtifacts; - cargoClippyExtraArgs = "--workspace --exclude kernel --exclude dyld --all-targets -- -D warnings"; - } - ); - - clippy-kernel = crossCraneLib.cargoClippy ( - commonArgs - // { - cargoArtifacts = crossArtifacts; - cargoClippyExtraArgs = "--package kernel --package dyld --all-targets -- -D warnings"; - } - ); - } - ); - }; -} diff --git a/platforms/BUCK b/platforms/BUCK deleted file mode 100644 index 82a10de..0000000 --- a/platforms/BUCK +++ /dev/null @@ -1,35 +0,0 @@ -config_setting( - name = "macos-aarch64", - constraint_values = [ - "prelude//cpu/constraints:arm64", - "prelude//os/constraints:macos", - ], - visibility = ["PUBLIC"], -) - -config_setting( - name = "arm64-none", - constraint_values = [ - "prelude//cpu/constraints:arm64", - "prelude//os/constraints:none", - ], - visibility = ["PUBLIC"], -) - -platform( - name = "kernel-arm64", - constraint_values = [ - "prelude//cpu/constraints:arm64", - "prelude//os/constraints:none", - ], - visibility = ["PUBLIC"], -) - -platform( - name = "macos-arm64", - constraint_values = [ - "prelude//cpu/constraints:arm64", - "prelude//os/constraints:macos", - ], - visibility = ["PUBLIC"], -) diff --git a/reindeer.toml b/reindeer.toml deleted file mode 100644 index c5d277a..0000000 --- a/reindeer.toml +++ /dev/null @@ -1,10 +0,0 @@ -third_party_dir = "third-party" - -# [platform.macos-aarch64] -# target = "aarch64-apple-darwin" - -# [platform.linux-x86_64] -# target = "x86_64-unknown-linux-gnu" - -# [platform.kernel-aarch64] -# target = "aarch64-unknown-none" diff --git a/src/kernel/Cargo.lock b/src/kernel/Cargo.lock deleted file mode 100644 index efedfea..0000000 --- a/src/kernel/Cargo.lock +++ /dev/null @@ -1,7 +0,0 @@ -# This file is automatically @generated by Cargo. -# It is not intended for manual editing. -version = 4 - -[[package]] -name = "zedos-kernel" -version = "0.1.0" diff --git a/src/kernel/Cargo.toml b/src/kernel/Cargo.toml index 15414a6..b7b2ed2 100644 --- a/src/kernel/Cargo.toml +++ b/src/kernel/Cargo.toml @@ -4,7 +4,7 @@ version = "0.1.0" edition = "2024" [[bin]] -name = "zedos-kernel" +name = "kernel" path = "src/main.rs" [dependencies] @@ -14,3 +14,4 @@ spin = { workspace = true } rand_chacha = { workspace = true } rand_core = { workspace = true } hfsplus = { path = "../lib/hfsplus" } +zstd-safe = { workspace = true } diff --git a/src/kernel/package.nix b/src/kernel/package.nix deleted file mode 100644 index bec1242..0000000 --- a/src/kernel/package.nix +++ /dev/null @@ -1,22 +0,0 @@ -{ - craneLib, - commonArgs, - stdenv, - ... -}: - -craneLib.buildPackage ( - commonArgs - // { - pname = "zedos-kernel"; - version = "0.1.0"; - - cargoExtraArgs = "--manifest-path src/kernel/Cargo.toml"; - - nativeBuildInputs = (commonArgs.nativeBuildInputs or [ ]) ++ [ - stdenv.cc - ]; - - RUSTFLAGS = "-Clinker=clang -Clink-arg=--ld-path=ld.lld -Clink-arg=-nostdlib -Clink-arg=--target=aarch64-unknown-none-elf"; - } -) diff --git a/src/kernel/src/binary_loader.rs b/src/kernel/src/binary_loader.rs new file mode 100644 index 0000000..da4771c --- /dev/null +++ b/src/kernel/src/binary_loader.rs @@ -0,0 +1,314 @@ +use crate::kprintln; +use alloc::string::String; +use alloc::vec; +use goblin::elf::Elf; +use goblin::mach::{Mach, MachO}; + +pub struct BinaryLoader { + pub entry: u64, + pub header_addr: u64, + pub dylinker: Option, + pub is_64bit: bool, + pub flags: u32, +} + +pub fn setup_stack( + sp: u64, + exec_path: &str, + mh_addr: u64, + is_64bit: bool, + sc_base: u64, + main_header: u64, +) -> u64 { + let mut current_sp = sp; + + // Copy strings to stack + let sc_base_str = alloc::format!("dyld_shared_cache_base_address={:x}", sc_base); + let exec_path_var = alloc::format!("executable_path={}", exec_path); + let strings = vec![exec_path, sc_base_str.as_str(), exec_path_var.as_str()]; + let mut string_ptrs = vec![]; + + for s in strings { + let bytes = s.as_bytes(); + current_sp -= (bytes.len() + 1) as u64; + unsafe { + core::ptr::copy_nonoverlapping(bytes.as_ptr(), current_sp as *mut u8, bytes.len()); + core::ptr::write((current_sp + bytes.len() as u64) as *mut u8, 0); + } + string_ptrs.push(current_sp); + } + + // Align SP + if is_64bit { + current_sp &= !15; + } else { + current_sp &= !3; + } + + if is_64bit { + // 64-bit values + let values = [ + mh_addr, // mach_header (at sp) + 1u64, // argc (at sp+8) + string_ptrs[0], // argv[0] + 0u64, // argv[1] (NULL) + 0u64, // envp[0] (NULL) + string_ptrs[0], // apple[0] (exec path - raw) + string_ptrs[1], // apple[1] (cache base) + string_ptrs[2], // apple[2] (executable_path var) + 0u64, // apple[3] (NULL) + ]; + + current_sp -= (values.len() * 8) as u64; + let stack_top = current_sp; + unsafe { + core::ptr::copy_nonoverlapping(values.as_ptr(), current_sp as *mut u64, values.len()); + } + stack_top + } else { + // 32-bit values + // dyld expects [sp] = mh_addr (its own header) + // main_header is passed in apple[] args + let values = [ + mh_addr as u32, // mach_header + 1u32, // argc + string_ptrs[0] as u32, // argv[0] + 0u32, // argv[1] (NULL) + 0u32, // envp[0] (NULL) + string_ptrs[1] as u32, // apple[0] (cache base) + string_ptrs[2] as u32, // apple[1] (executable_path var) + main_header as u32, // apple[2] (main executable header) + 0u32, // apple[3] (NULL) + ]; + + current_sp -= (values.len() * 4) as u64; + let stack_top = current_sp; + unsafe { + core::ptr::copy_nonoverlapping(values.as_ptr(), current_sp as *mut u32, values.len()); + } + stack_top + } +} + +fn segname_to_str(segname: &[u8; 16]) -> &str { + core::str::from_utf8(segname) + .ok() + .unwrap_or("") + .trim_matches('\0') +} + +impl BinaryLoader { + pub fn load(data: &[u8], load_offset: u64) -> Option { + kprintln!("BinaryLoader::load: data len {:x}", data.len()); + + // Try Mach-O first + if let Ok(mach) = Mach::parse(data) { + return match mach { + Mach::Binary(macho) => Self::load_macho(&macho, data, load_offset), + Mach::Fat(fat) => { + let arches = fat.arches().ok()?; + kprintln!("Fat MachO found with {} architectures", arches.len()); + let arch = arches + .iter() + .find(|a| a.cputype == goblin::mach::constants::cputype::CPU_TYPE_ARM64) + .or_else(|| { + arches.iter().find(|a| { + a.cputype == goblin::mach::constants::cputype::CPU_TYPE_ARM + }) + })?; + + let offset = arch.offset as usize; + let size = arch.size as usize; + let slice = &data[offset..offset + size]; + let macho = MachO::parse(slice, 0).ok()?; + Self::load_macho(&macho, slice, load_offset) + } + }; + } + + // Try ELF + if let Ok(elf) = Elf::parse(data) { + return Self::load_elf(&elf, data, load_offset); + } + + kprintln!("Unsupported binary format"); + None + } + + fn load_macho(macho: &MachO, data: &[u8], load_offset: u64) -> Option { + // ... (existing load_macho code remains mostly the same, but returns Self) + let is_64bit = macho.header.cputype == goblin::mach::constants::cputype::CPU_TYPE_ARM64; + kprintln!( + "Loading Mach-O binary (64-bit: {}) with slide {:x}, entry: {:x}, flags: {:x}", + is_64bit, + load_offset, + macho.entry, + macho.header.flags + ); + + let mut dylinker = None; + for cmd in &macho.load_commands { + if let goblin::mach::load_command::CommandVariant::LoadDylinker(d) = &cmd.command { + let name_offset = d.name as usize; + let name_ptr = &data[cmd.offset + name_offset..]; + if let Some(name_bytes) = name_ptr.split(|&b| b == 0).next() + && let Ok(name) = core::str::from_utf8(name_bytes) + { + dylinker = Some(String::from(name)); + } + } + } + + let mut header_addr = load_offset; + for segment in &macho.segments { + let segname = segname_to_str(&segment.segname); + if segname == "__PAGEZERO" { + continue; + } + let vm_addr = segment.vmaddr + load_offset; + let file_off = segment.fileoff as usize; + let file_size = segment.filesize as usize; + let mem_size = segment.vmsize as usize; + let prot = segment.initprot; + + if file_off == 0 && file_size > 0 { + header_addr = vm_addr; + } + + kprintln!( + " Mach-O Segment: {} vaddr={:x} file_off={:x} file_size={:x} mem_size={:x}", + segname, + vm_addr, + file_off, + file_size, + mem_size + ); + + let perm = match (prot & 1 != 0, prot & 2 != 0, prot & 4 != 0) { + _ => crate::mmu::MapPermission::UserRWX, + }; + + let data_size = (file_size + 4095) & !4095; + if data_size > 0 { + let layout = core::alloc::Layout::from_size_align(data_size, 4096).unwrap(); + let phys_ptr = unsafe { alloc::alloc::alloc_zeroed(layout) }; + let paddr = phys_ptr as u64; + crate::mmu::map_range( + vm_addr, + paddr, + data_size as u64, + crate::mmu::MapPermission::UserRW, + ); + let src = &data[file_off..file_off + file_size]; + unsafe { + core::ptr::copy_nonoverlapping(src.as_ptr(), paddr as *mut u8, file_size); + } + crate::mmu::map_range(vm_addr, paddr, data_size as u64, perm); + } + if mem_size > data_size { + let padding_addr = vm_addr + data_size as u64; + let padding_size = (mem_size - data_size) as u64; + crate::mmu::map_zero_range(padding_addr, padding_size, perm); + } + } + + Some(Self { + entry: macho.entry + load_offset, + header_addr, + dylinker, + is_64bit, + flags: macho.header.flags, + }) + } + + fn load_elf(elf: &Elf, data: &[u8], load_offset: u64) -> Option { + let is_64bit = elf.is_64; + kprintln!( + "Loading ELF binary (64-bit: {}) with slide {:x}, entry: {:x}...", + is_64bit, + load_offset, + elf.entry + ); + + let mut min_vaddr = u64::MAX; + for ph in &elf.program_headers { + kprintln!( + " ELF PHDR: type={:x} vaddr={:x} mem_size={:x} file_off={:x} file_size={:x}", + ph.p_type, + ph.p_vaddr, + ph.p_memsz, + ph.p_offset, + ph.p_filesz + ); + if ph.p_type == goblin::elf::program_header::PT_LOAD { + let vm_addr = ph.p_vaddr + load_offset; + if vm_addr < min_vaddr { + min_vaddr = vm_addr; + } + + let file_off = ph.p_offset as usize; + let file_size = ph.p_filesz as usize; + let mem_size = ph.p_memsz as usize; + + kprintln!( + " ELF Segment: vaddr={:x} mem_size={:x} file_off={:x} file_size={:x}", + vm_addr, + mem_size, + file_off, + file_size + ); + + let perm = crate::mmu::MapPermission::UserRWX; + + let data_size = (file_size + 4095) & !4095; + if data_size > 0 { + let layout = core::alloc::Layout::from_size_align(data_size, 4096).unwrap(); + let phys_ptr = unsafe { alloc::alloc::alloc_zeroed(layout) }; + let paddr = phys_ptr as u64; + crate::mmu::map_range( + vm_addr, + paddr, + data_size as u64, + crate::mmu::MapPermission::UserRW, + ); + let src = &data[file_off..file_off + file_size]; + kprintln!( + " Copying {:x} bytes from file_off {:x} to paddr {:x}", + file_size, + file_off, + paddr + ); + if file_size >= 16 { + kprintln!(" Source bytes: {:02x?}", &src[0..16]); + } + unsafe { + core::ptr::copy_nonoverlapping(src.as_ptr(), paddr as *mut u8, file_size); + } + if file_size >= 16 { + let dst_slice = + unsafe { core::slice::from_raw_parts(paddr as *const u8, 16) }; + kprintln!(" Dest bytes: {:02x?}", dst_slice); + } + crate::mmu::map_range(vm_addr, paddr, data_size as u64, perm); + } + if mem_size > data_size { + let padding_addr = vm_addr + data_size as u64; + let padding_size = (mem_size - data_size) as u64; + crate::mmu::map_zero_range(padding_addr, padding_size, perm); + } + } + } + + if min_vaddr == u64::MAX { + min_vaddr = load_offset; + } + + Some(Self { + entry: elf.entry + load_offset, + header_addr: min_vaddr, + dylinker: None, + is_64bit, + flags: 0, + }) + } +} diff --git a/src/kernel/src/boot.s b/src/kernel/src/boot.s index 45decb1..9575618 100644 --- a/src/kernel/src/boot.s +++ b/src/kernel/src/boot.s @@ -25,14 +25,14 @@ real_start: /* Initialize BSS */ ldr x0, =__bss_start ldr x1, =__bss_end - sub x1, x1, x0 - cbz x1, 2f + cmp x0, x1 + bge 2f /* Zero out BSS */ zero_bss: str xzr, [x0], #8 - sub x1, x1, #8 - cbnz x1, zero_bss + cmp x0, x1 + blt zero_bss 2: /* Enable FPU/SIMD */ @@ -42,7 +42,7 @@ zero_bss: /* Jump to Rust code */ /* Set stack pointer before jump */ - ldr x0, =0x40800000 + ldr x0, =0x80000000 mov sp, x0 bl kmain diff --git a/src/kernel/src/heap.rs b/src/kernel/src/heap.rs index 3d442a2..725b0d7 100644 --- a/src/kernel/src/heap.rs +++ b/src/kernel/src/heap.rs @@ -3,9 +3,7 @@ use linked_list_allocator::LockedHeap; #[global_allocator] static ALLOCATOR: LockedHeap = LockedHeap::empty(); -pub fn init_heap() { - let heap_start = 0x6000_0000u64; - let heap_size = 512 * 1024 * 1024; // 512MiB +pub fn init_heap(heap_start: u64, heap_size: usize) { crate::kprintln!( "GRAVITY HEAP: Initializing at {:x} (size {:x})", heap_start, diff --git a/src/kernel/src/ipc.rs b/src/kernel/src/ipc.rs index 44aa35d..b035299 100644 --- a/src/kernel/src/ipc.rs +++ b/src/kernel/src/ipc.rs @@ -1,3 +1,4 @@ +use crate::kprintln; use alloc::collections::BTreeMap; use alloc::sync::Arc; use alloc::vec::Vec; @@ -139,9 +140,9 @@ pub fn mach_msg( unsafe { core::ptr::copy_nonoverlapping(data.as_ptr(), msg as *mut u8, size); - (*msg).msgh_size = size as u32; + // Header is already in the data, but we might need to update some fields + // relative to the receiver's view. (*msg).msgh_local_port = rcv_name; - (*msg).msgh_remote_port = 0; // Kernel } return MACH_MSG_SUCCESS; } else { @@ -159,29 +160,38 @@ fn handle_host_rpc(header: &MachMsgHeader, _msg: *mut MachMsgHeader, space: &mut let reply_port_name = header.msgh_local_port; if let Some(port) = space.get_port(reply_port_name) { let mut p = port.lock(); - let mut reply = alloc::vec![0u8; 128]; + let mut reply = alloc::vec![0u8; 256]; let r_hdr = reply.as_mut_ptr() as *mut MachMsgHeader; unsafe { (*r_hdr).msgh_bits = 0x12; // MACH_MSGH_BITS(MACH_MSG_TYPE_MOVE_SEND_ONCE, 0) - (*r_hdr).msgh_remote_port = 1; // From Host port + (*r_hdr).msgh_remote_port = 0; // Kernel/Host (*r_hdr).msgh_local_port = reply_port_name; (*r_hdr).msgh_id = header.msgh_id + 100; + // Get flavor (first int after header) + let flavor = *(_msg as *const i32).add(6); + kprintln!("Host RPC id={} flavor={}", header.msgh_id, flavor); + match header.msgh_id { 3409 => { // host_info - (*r_hdr).msgh_size = 48; + (*r_hdr).msgh_size = 100; // Larger buffer let data_ptr = reply.as_mut_ptr().add(24) as *mut i32; - unsafe { - core::ptr::write_bytes(data_ptr, 0, 24); + core::ptr::write_bytes(data_ptr, 0, 76); - // host_basic_info (6 fields = 24 bytes) + if flavor == 1 { + // HOST_BASIC_INFO *data_ptr = 1; // max_cpus *data_ptr.add(1) = 1; // avail_cpus *data_ptr.add(2) = 1024 * 1024 * 1024; // memory_size *data_ptr.add(3) = 12; // cpu_type: ARM *data_ptr.add(4) = 9; // cpu_subtype: V7 *data_ptr.add(5) = 1; // cpu_threadtype + *data_ptr.add(6) = 1; // physical_cpu + *data_ptr.add(7) = 1; // physical_cpu_max + *data_ptr.add(8) = 1; // logical_cpu + *data_ptr.add(9) = 1; // logical_cpu_max + *(data_ptr.add(10) as *mut u64) = 1024 * 1024 * 1024; // max_mem } } 3402 => { @@ -207,6 +217,7 @@ fn handle_host_rpc(header: &MachMsgHeader, _msg: *mut MachMsgHeader, space: &mut (*r_hdr).msgh_size = 24; } } + reply.truncate((*r_hdr).msgh_size as usize); } // Keep queue size small if p.messages.len() > 10 { diff --git a/src/kernel/src/macho.rs b/src/kernel/src/macho.rs deleted file mode 100644 index 1896041..0000000 --- a/src/kernel/src/macho.rs +++ /dev/null @@ -1,262 +0,0 @@ -use crate::kprintln; -use alloc::string::String; -use alloc::vec; -use goblin::mach::{Mach, MachO}; - -pub struct MachOLoader { - pub entry: u64, - pub header_addr: u64, - pub dylinker: Option, - pub is_64bit: bool, -} - -pub fn setup_stack(sp: u64, exec_path: &str, mh_addr: u64, is_64bit: bool) -> u64 { - let mut current_sp = sp; - - // Copy strings to stack - let strings = vec![ - exec_path, - "dyld_shared_cache_base_address=0x30000000", - "executable_path=/bin/initial", - ]; - let mut string_ptrs = vec![]; - - for s in strings { - let bytes = s.as_bytes(); - current_sp -= (bytes.len() + 1) as u64; - unsafe { - core::ptr::copy_nonoverlapping(bytes.as_ptr(), current_sp as *mut u8, bytes.len()); - core::ptr::write((current_sp + bytes.len() as u64) as *mut u8, 0); - } - string_ptrs.push(current_sp); - } - - // Align SP - if is_64bit { - current_sp &= !15; - } else { - current_sp &= !3; - } - - if is_64bit { - // 64-bit values - let values = [ - mh_addr, // mach_header (at sp) - 1u64, // argc (at sp+8) - string_ptrs[0], // argv[0] - 0u64, // argv[1] (NULL) - 0u64, // envp[0] (NULL) - string_ptrs[0], // apple[0] (exec path) - string_ptrs[1], // apple[1] (cache base) - string_ptrs[2], // apple[2] (exec path again) - 0u64, // apple[3] (NULL) - ]; - - current_sp -= (values.len() * 8) as u64; - let stack_top = current_sp; - unsafe { - core::ptr::copy_nonoverlapping(values.as_ptr(), current_sp as *mut u64, values.len()); - } - stack_top - } else { - // 32-bit values for ARMv7 Darwin - // Order: mach_header, argc, argv[0...n], NULL, envp[0...m], NULL, apple[0...k], NULL - let values = [ - mh_addr as u32, // mach_header (at sp) - 1u32, // argc (at sp+4) - string_ptrs[0] as u32, // argv[0] - 0u32, // argv[1] (NULL) - 0u32, // envp[0] (NULL) - string_ptrs[0] as u32, // apple[0] (exec path) - string_ptrs[1] as u32, // apple[1] (dyld_shared_cache_base_address) - string_ptrs[2] as u32, // apple[2] (executable_path) - mh_addr as u32, // apple[3] (mach_header) - 0u32, // apple[4] (NULL) - ]; - - // Ensure 16-byte alignment for the whole stack frame - let bytes_needed = values.len() * 4; - current_sp -= bytes_needed as u64; - current_sp &= !15; - - let stack_top = current_sp; - unsafe { - let p = stack_top as *mut u32; - for (i, &v) in values.iter().enumerate() { - core::ptr::write(p.add(i), v); - } - } - stack_top - } -} - -fn segname_to_str(segname: &[u8; 16]) -> &str { - core::str::from_utf8(segname) - .ok() - .unwrap_or("") - .trim_matches('\0') -} - -impl MachOLoader { - pub fn load(data: &[u8], load_offset: u64) -> Option { - kprintln!("MachOLoader::load: data len {:x}", data.len()); - let mach = match Mach::parse(data) { - Ok(m) => m, - Err(e) => { - kprintln!("Mach::parse failed: {:?}. Checking for raw MachO...", e); - if let Ok(macho) = MachO::parse(data, 0) { - kprintln!( - "Successfully parsed raw MachO (cputype={:?})", - macho.header.cputype - ); - return Self::load_macho(&macho, data, load_offset); - } - return None; - } - }; - - match mach { - Mach::Binary(macho) => Self::load_macho(&macho, data, load_offset), - Mach::Fat(fat) => { - let arches = fat.arches().ok()?; - kprintln!("Fat MachO found with {} architectures", arches.len()); - // Prefer arm64 if available, otherwise armv7 - let arch = arches - .iter() - .find(|a| a.cputype == goblin::mach::constants::cputype::CPU_TYPE_ARM64) - .or_else(|| { - arches - .iter() - .find(|a| a.cputype == goblin::mach::constants::cputype::CPU_TYPE_ARM) - }); - - if let Some(arch) = arch { - let offset = arch.offset as usize; - let size = arch.size as usize; - kprintln!( - "Selected arch cputype {:x} at offset {:x} size {:x}", - arch.cputype, - offset, - size - ); - let slice = &data[offset..offset + size]; - let macho = MachO::parse(slice, 0).ok()?; - return Self::load_macho(&macho, slice, load_offset); - } - None - } - } - } - - fn load_macho(macho: &MachO, data: &[u8], load_offset: u64) -> Option { - let is_64bit = macho.header.cputype == goblin::mach::constants::cputype::CPU_TYPE_ARM64; - kprintln!( - "Loading Mach-O binary (64-bit: {}) with slide {:x}...", - is_64bit, - load_offset - ); - - // Dump first 32 bytes of MachO header - if data.len() >= 32 { - let p = data.as_ptr() as *const u32; - unsafe { - kprintln!( - "MachO Header: {:08x} {:08x} {:08x} {:08x}", - core::ptr::read(p), - core::ptr::read(p.add(1)), - core::ptr::read(p.add(2)), - core::ptr::read(p.add(3)) - ); - kprintln!( - " {:08x} {:08x} {:08x} {:08x}", - core::ptr::read(p.add(4)), - core::ptr::read(p.add(5)), - core::ptr::read(p.add(6)), - core::ptr::read(p.add(7)) - ); - } - } - - let mut dylinker = None; - - for cmd in &macho.load_commands { - if let goblin::mach::load_command::CommandVariant::LoadDylinker(d) = &cmd.command { - let name_offset = d.name as usize; - let name_ptr = &data[cmd.offset + name_offset..]; - if let Some(name_bytes) = name_ptr.split(|&b| b == 0).next() - && let Ok(name) = core::str::from_utf8(name_bytes) - { - dylinker = Some(String::from(name)); - } - } - } - - let mut header_addr = load_offset; // Fallback - - for segment in &macho.segments { - let segname = segname_to_str(&segment.segname); - if segname == "__PAGEZERO" { - continue; - } - - let vm_addr = segment.vmaddr + load_offset; - let file_off = segment.fileoff as usize; - let file_size = segment.filesize as usize; - let mem_size = segment.vmsize as usize; - let prot = segment.initprot; - - if file_off == 0 && file_size > 0 { - header_addr = vm_addr; - kprintln!("Found Mach-O header at {:x}", header_addr); - } - - kprintln!( - "Mapping segment {} at {:x} (size {:x}, prot {:x})", - segname, - vm_addr, - mem_size, - prot - ); - - let perm = match (prot & 1 != 0, prot & 2 != 0, prot & 4 != 0) { - _ => crate::mmu::MapPermission::UserRWX, - }; - - // Allocate physical memory for this segment - let layout = core::alloc::Layout::from_size_align(mem_size, 4096).unwrap(); - let phys_ptr = unsafe { alloc::alloc::alloc_zeroed(layout) }; - if phys_ptr.is_null() { - panic!("Failed to allocate physical memory for segment"); - } - let paddr = phys_ptr as u64; - - // Map the segment - crate::mmu::map_range( - vm_addr, - paddr, - mem_size as u64, - crate::mmu::MapPermission::UserRW, - ); - - if file_size > 0 { - let src = &data[file_off..file_off + file_size]; - unsafe { - core::ptr::copy_nonoverlapping(src.as_ptr(), vm_addr as *mut u8, file_size); - } - } - - // Now apply final permissions - crate::mmu::map_range(vm_addr, paddr, mem_size as u64, perm); - } - - Some(Self { - entry: macho.entry + load_offset, - - header_addr, - - dylinker, - - is_64bit, - }) - } -} diff --git a/src/kernel/src/main.rs b/src/kernel/src/main.rs index d0c59c8..43bbe05 100644 --- a/src/kernel/src/main.rs +++ b/src/kernel/src/main.rs @@ -4,11 +4,11 @@ // Enable alloc crate extern crate alloc; +mod binary_loader; mod block; mod heap; mod hfsfs; mod ipc; -mod macho; mod mem; mod mmu; mod process; @@ -16,10 +16,10 @@ mod scheduler; mod uart; mod vfs; mod virtio; +mod zalloc; use crate::scheduler::{Process, SCHEDULER}; use alloc::string::String; -use alloc::vec; use core::arch::asm; use core::arch::global_asm; use core::panic::PanicInfo; @@ -30,58 +30,58 @@ global_asm!(include_str!("switch.s")); #[unsafe(no_mangle)] pub extern "C" fn kmain() { - kprintln!("Hello from GravityOS. Spawning AArch64 processes..."); + kprintln!("Hello from GravityOS (fixed 2). Spawning AArch64 processes..."); process::init_vectors(); mmu::init(); - heap::init_heap(); + unsafe extern "C" { + static _end: u8; + } + + let kernel_end = unsafe { &_end as *const u8 as u64 }; + let heap_start = (kernel_end + 0x1FFFFF) & !0x1FFFFF; // Align to 2MB + let heap_end = 0x7F00_0000u64; // Leave 16MB for stack at the top of 1GB RAM + let heap_size = (heap_end - heap_start) as usize; + + heap::init_heap(heap_start, heap_size); kprintln!("Heap initialized"); kprintln!("Vectors initialized"); - // Initialize virtio block device and load shared cache - // let mut shared_cache_data: &[u8] = &[]; - if let Some(blk) = virtio::init() { kprintln!("Initializing VFS from disk..."); let blk_shared = alloc::sync::Arc::new(spin::Mutex::new(blk)); let hfsfs = hfsfs::HfsFs::new(blk_shared, 400 * 1024 * 1024); vfs::init(hfsfs); kprintln!("VFS initialized"); + load_and_map_shared_cache(); } else { kprintln!("No virtio disk found"); } // Note: 0x40000000 seems to be used by dyld for CommPage or similar absolute reference. - // We move the app to 0x4000_0000. let load_offset = 0x3FFF_F000; kprintln!("Using load_offset: {:x}", load_offset); // Populate CommPage (0xFFFF0000) with shared cache address (0x30000000) - // Offset 0x28 commonly used for shared cache base in Darwin ARM unsafe { - // Signature "comm" at 0x0? crate::mmu::COMMPAGE_STORAGE[0] = b'c'; crate::mmu::COMMPAGE_STORAGE[1] = b'o'; crate::mmu::COMMPAGE_STORAGE[2] = b'm'; crate::mmu::COMMPAGE_STORAGE[3] = b'm'; - // Set version at 0x1E (u16) let version_ptr = &mut crate::mmu::COMMPAGE_STORAGE[0x1E] as *mut u8 as *mut u16; *version_ptr = 13; - // Set ncpus at 0x22 (u8) crate::mmu::COMMPAGE_STORAGE[0x22] = 1; - // Set pagesize at 0x24 (u32) let pgsize_ptr = &mut crate::mmu::COMMPAGE_STORAGE[0x24] as *mut u8 as *mut u32; *pgsize_ptr = 4096; let sc_addr = 0x3000_0000u32; - // Try all common shared cache base offsets in CommPage for offset in [0x28, 0x38, 0x68, 0x70, 0x88, 0x90] { let sc_ptr = &mut crate::mmu::COMMPAGE_STORAGE[offset] as *mut u8 as *mut u32; *sc_ptr = sc_addr; @@ -99,83 +99,179 @@ pub extern "C" fn kmain() { kprintln!("Reading /sbin/launchd ({} bytes)...", file.size()); file.read_to_end() }; - kprintln!("Opening /usr/lib/dyld..."); - let dyld_bin = { - let mut file = vfs::open("/usr/lib/dyld").expect("Failed to open dyld"); - kprintln!("Reading /usr/lib/dyld ({} bytes)...", file.size()); - file.read_to_end() - }; + + // Try to load dyld from VFS first (the 32-bit one from rootfs), + // fallback to embedded 64-bit rust dyld if not found or if needed. + let mut dyld_bin = None; + if let Some(mut file) = vfs::open("/usr/lib/dyld") { + kprintln!("Found system dyld at /usr/lib/dyld (size {})", file.size()); + dyld_bin = Some(file.read_to_end()); + } + + let dyld_bin = dyld_bin.expect("Failed to load dyld"); + kprintln!("Parsing Mach-O binaries..."); - let main_load_offset = 0; // Use linked address for launchd if possible - let main_loader = macho::MachOLoader::load(&main_bin, main_load_offset); + + // Check if main binary is PIE and needs to be slid + let mut main_load_offset = 0; + + // Temporary load to check flags + if let Some(temp_loader) = binary_loader::BinaryLoader::load(&main_bin, 0) { + if (temp_loader.flags & 0x200000) != 0 { + // MH_PIE + kprintln!("Main binary is PIE. Sliding to 0x40000000 to avoid Page Zero."); + main_load_offset = 0x40000000; + } else { + kprintln!("Main binary is NOT PIE. Loading at 0."); + } + } + + let main_loader = binary_loader::BinaryLoader::load(&main_bin, main_load_offset); if let Some(loader) = main_loader { let mut loader_is_64bit = loader.is_64bit; - let (entry, path, dyld_mh, _dyld_slide) = if let Some(dyld_path) = loader.dylinker { + let (entry, path, dyld_mh, main_mh, _dyld_slide) = if let Some(dyld_path) = loader.dylinker + { kprintln!("Binary requests dylinker: {}", dyld_path); - let dyld_load_offset = 0x2fe00000; - let dyld_loader = - macho::MachOLoader::load(&dyld_bin, dyld_load_offset).expect("Failed to load dyld"); + let dyld_load_offset = 0; + let dyld_loader = binary_loader::BinaryLoader::load(&dyld_bin, dyld_load_offset) + .expect("Failed to load dyld"); loader_is_64bit = dyld_loader.is_64bit; - (dyld_loader.entry, dyld_path, dyld_loader.header_addr, 0) + ( + dyld_loader.entry, + String::from("/sbin/launchd"), + dyld_loader.header_addr, + loader.header_addr, + 0, + ) } else { ( loader.entry + main_load_offset, - String::from("/bin/initial"), - 0, + String::from("/sbin/launchd"), + loader.header_addr, + loader.header_addr, 0, ) }; - // Allocate and map user stack let (user_stack_base, user_sp_initial, user_stack_size) = { let size = 1024 * 1024; - let buf = vec![0u8; size]; - let base = buf.as_ptr() as u64; - core::mem::forget(buf); - (base, base + size as u64, size) + // Move stack to 0x20000000 (512MB) + let stack_addr = 0x20000000u64; + let layout = core::alloc::Layout::from_size_align(size, 4096).unwrap(); + let ptr = unsafe { alloc::alloc::alloc_zeroed(layout) }; + if ptr.is_null() { + panic!("Failed to allocate stack"); + } + // Use ptr as backing, but map to stack_addr + let paddr = ptr as u64; + (stack_addr, stack_addr + size as u64, size) }; - crate::mmu::map_range( - user_stack_base, - user_stack_base, - user_stack_size as u64, - crate::mmu::MapPermission::UserRW, - ); + // Allocate physical memory for stack and map it + { + let layout = core::alloc::Layout::from_size_align(user_stack_size, 4096).unwrap(); + let phys_ptr = unsafe { alloc::alloc::alloc_zeroed(layout) }; + if phys_ptr.is_null() { + panic!("Failed to allocate physical stack"); + } + crate::mmu::map_range( + user_stack_base, + phys_ptr as u64, + user_stack_size as u64, + crate::mmu::MapPermission::UserRW, + ); + } + + // HACK: dyld accesses 5 * SP. Map it. + let mystery_addr = user_stack_base * 5; + kprintln!("Mapping mystery region at {:x}...", mystery_addr); + { + // Map 16MB to be safe (FAR was at ~5MB offset) we use 2MB alignment for speed + let size = 16 * 1024 * 1024; + let layout = core::alloc::Layout::from_size_align(size, 0x200000).unwrap(); + let phys_ptr = unsafe { alloc::alloc::alloc_zeroed(layout) }; + crate::mmu::map_range( + mystery_addr, + phys_ptr as u64, + size as u64, + crate::mmu::MapPermission::UserRW, + ); + } + + // Map Page Zero (0x0 - 0x10000) - 64KB to handle low jumps + { + let size = 64 * 1024; + let layout = core::alloc::Layout::from_size_align(size, 4096).unwrap(); + let phys_ptr = unsafe { alloc::alloc::alloc_zeroed(layout) }; + + crate::mmu::map_range( + 0, + phys_ptr as u64, + size as u64, + crate::mmu::MapPermission::UserRW, + ); + } + + // Map Mystery Region 2 (0x08000000) + // dyld accesses 0x0859454c. + { + let addr = 0x08000000; + let size = 16 * 1024 * 1024; + let layout = core::alloc::Layout::from_size_align(size, 0x200000).unwrap(); + let phys_ptr = unsafe { alloc::alloc::alloc_zeroed(layout) }; + crate::mmu::map_range( + addr, + phys_ptr as u64, + size as u64, + crate::mmu::MapPermission::UserRW, + ); + } - // Setup BSD/Mach stack layout kprintln!("Initial User SP: {:x}", user_sp_initial); - // Pass the actual address where the Mach-O header was loaded (mapped) - let new_sp = - macho::setup_stack(user_sp_initial, &path, loader.header_addr, loader_is_64bit); + let new_sp = binary_loader::setup_stack( + user_sp_initial, + &path, + dyld_mh, + loader_is_64bit, + 0x30000000, + main_mh, + ); kprintln!("Stack setup complete. New User SP: {:x}", new_sp); - // Prepare args for dyld bootstrap: - // Darwin ARMv7: r0=dyld_mh, r1=slide, r2=&argc, r3=argv, r4=envp, r5=apple let args = if loader_is_64bit { [ loader.header_addr, - 0, // slide + 0, new_sp + 8, new_sp + 16, new_sp + 32, new_sp + 40, ] } else { - [ - dyld_mh, // r0: dyld's own mach_header - 0, // r1: dyld's own slide - new_sp + 4, // r2: &argc (sp+4 points to argc=1) - new_sp + 8, // r3: argv - new_sp + 16, // r4: envp - new_sp + 20, // r5: apple - ] + // AArch32: sp points to argc. + // macho::setup_stack handled the vector layout. + // We just need to tell the thread to start with sp. + // The registers r0, r1 etc are usually for specific dyld entry. + // In modern dyld: + // r0 = mach_header of main app? No, r0 is 0 usually. + // sp points to argc. + // Actually, if dyld is dynamic linker, kernel entry: + // sp -> argc + // But we are setting registers for Process::new. + // Process::new sets x0...x7 from args array. + // For dyld start: + // x0 = 0 + // x1 = 0 + // x2 = 0 + // x3 = 0 + // sp = new_sp + // So we need clear args. + [0, 0, 0, 0, 0, 0] }; - // Allocate TLS page (4KB), ensuring 4KB alignment let (tls_base, tls_size) = { let size = 4096; - use alloc::alloc::{Layout, alloc_zeroed}; - let layout = Layout::from_size_align(size, 4096).unwrap(); - let ptr = unsafe { alloc_zeroed(layout) }; + let layout = core::alloc::Layout::from_size_align(size, 4096).unwrap(); + let ptr = unsafe { alloc::alloc::alloc_zeroed(layout) }; if ptr.is_null() { panic!("Failed to allocate TLS"); } @@ -188,7 +284,6 @@ pub extern "C" fn kmain() { crate::mmu::MapPermission::UserRW, ); kprintln!("Mapped TLS at {:x}", tls_base); - // Fill TLS with self-reference at offset 0 unsafe { core::ptr::write(tls_base as *mut u32, tls_base as u32); } @@ -232,17 +327,131 @@ pub extern "C" fn kmain() { fn __switch_to(prev: *mut process::CpuContext, next: *const process::CpuContext); } __switch_to(&mut boot_ctx, next_ctx_ptr); + } + + loop { + unsafe { asm!("wfe") }; + } +} + +fn load_and_map_shared_cache() { + let sc_paths = [ + "/System/Library/Caches/com.apple.dyld/dyld_shared_cache_armv7", + "/System/Library/Caches/com.apple.dyld/dyld_shared_cache_armv6", + ]; + + let mut sc_file = None; + for path in sc_paths { + if let Some(file) = vfs::open(path) { + kprintln!("Found shared cache at {}", path); + sc_file = Some(file); + break; + } + } + + let mut file = match sc_file { + Some(f) => f, + None => { + kprintln!("Shared cache NOT found in HFS+ volume"); + return; + } + }; + + let size = file.size(); + kprintln!("Shared cache size: {} bytes", size); - kprintln!("ERROR: __switch_to returned to kmain!"); + // Read header for debug + let mut header = [0u8; 128]; + file.read_at(0, &mut header); + + kprintln!("Shared cache header dump:"); + for i in 0..8 { + let offset = i * 16; + kprintln!( + " {:02x}: {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x} {:02x}", + offset, + header[offset], + header[offset + 1], + header[offset + 2], + header[offset + 3], + header[offset + 4], + header[offset + 5], + header[offset + 6], + header[offset + 7], + header[offset + 8], + header[offset + 9], + header[offset + 10], + header[offset + 11], + header[offset + 12], + header[offset + 13], + header[offset + 14], + header[offset + 15] + ); + } + + if let Ok(magic) = core::str::from_utf8(&header[0..16]) { + kprintln!("Shared cache header magic: {:?}", magic); } + let base_addr = u64::from_le_bytes(header[32..40].try_into().unwrap_or([0; 8])); + kprintln!("Shared cache expected base address: {:x}", base_addr); + let mapping_offset = u32::from_le_bytes(header[16..20].try_into().unwrap_or([0; 4])) as u64; + let mapping_count = u32::from_le_bytes(header[20..24].try_into().unwrap_or([0; 4])) as usize; kprintln!( - "Returned to kmain loop? This shouldn't happen for the first switch unless it returns." + "Shared cache mappings: count={} offset={:x}", + mapping_count, + mapping_offset ); - loop { - unsafe { asm!("wfe") }; + // Dump mappings + let mut mapping_buf = [0u8; 32]; // Each mapping is 32 bytes + for i in 0..mapping_count { + file.read_at(mapping_offset + (i * 32) as u64, &mut mapping_buf); + let address = u64::from_le_bytes(mapping_buf[0..8].try_into().unwrap()); + let size = u64::from_le_bytes(mapping_buf[8..16].try_into().unwrap()); + let file_offset = u64::from_le_bytes(mapping_buf[16..24].try_into().unwrap()); + kprintln!( + " Mapping {}: addr={:x} size={:x} file_off={:x}", + i, + address, + size, + file_offset + ); } + + // Allocate physical memory for shared cache from heap (must be page aligned) + let alloc_size = (size as usize + 4095) & !4095; + let layout = core::alloc::Layout::from_size_align(alloc_size, 4096).unwrap(); + let phys_ptr = unsafe { alloc::alloc::alloc_zeroed(layout) }; + if phys_ptr.is_null() { + kprintln!("Failed to allocate memory for shared cache!"); + return; + } + + kprintln!( + "Loading shared cache into memory at {:x}...", + phys_ptr as usize + ); + let mut loaded = 0; + while loaded < size as usize { + let chunk_size = core::cmp::min(1024 * 1024, size as usize - loaded); + let slice = unsafe { core::slice::from_raw_parts_mut(phys_ptr.add(loaded), chunk_size) }; + file.read(slice); + loaded += chunk_size; + if loaded % (50 * 1024 * 1024) == 0 { + kprintln!(" Loaded {} MB...", loaded / 1024 / 1024); + } + } + + let sc_base = 0x3000_0000u64; + kprintln!("Mapping shared cache to vaddr {:x}...", sc_base); + crate::mmu::map_range( + sc_base, + phys_ptr as u64, + alloc_size as u64, + crate::mmu::MapPermission::UserRWX, // Initially RWX for dyld + ); + kprintln!("Shared cache mapped successfully."); } #[panic_handler] diff --git a/src/kernel/src/mmu.rs b/src/kernel/src/mmu.rs index 6a4cbb3..b4a0c26 100644 --- a/src/kernel/src/mmu.rs +++ b/src/kernel/src/mmu.rs @@ -38,15 +38,15 @@ static mut L2_TABLES: [PageTable; 4] = [PageTable([0; 512]); 4]; // Pool for dynamically allocated L2 and L3 tables static mut L2_POOL: [PageTable; 16] = [PageTable([0; 512]); 16]; static mut L2_ALLOC_IDX: usize = 0; -static mut L3_POOL: [PageTable; 256] = [PageTable([0; 512]); 256]; +static mut L3_POOL: [PageTable; 2048] = [PageTable([0; 512]); 2048]; static mut L3_ALLOC_IDX: usize = 0; pub fn init() { kprintln!("MMU: Initializing 3-level hierarchy (T0SZ=32)..."); unsafe { - // 1. MAIR_EL1: Index 0=Device, Index 1=Normal - let mair: u64 = 0x0000_0000_0000_FF04; // Attr0=Device, Attr1=Normal + // 1. MAIR_EL1: Index 0=Device, Index 1=Normal Non-Cacheable + let mair: u64 = 0x0000_0000_0000_4404; // Attr0=Device, Attr1=Normal NC asm!("msr mair_el1, {}", in(reg) mair); // 2. Map 4GB using L1 -> L2 (2MB blocks) @@ -69,14 +69,15 @@ pub fn init() { // Map everything as Normal (MAIR_MEM) for now to ensure kernel code/stack work // MAIR Index 1 is Normal memory let attr = MAIR_MEM; - L2_TABLES[i].0[j] = paddr | DESC_VALID | DESC_BLOCK | attr | AF | AP_RW_EL1; + L2_TABLES[i].0[j] = + paddr | DESC_VALID | DESC_BLOCK | attr | AF | SH_INNER | AP_RW_EL1; } } asm!("dsb sy"); - // 3. TCR_EL1: T0SZ=32, TG0=4KB, EPD1=1, WBWA, Shareable, etc. - let tcr: u64 = 0x5b5103520; + // 3. TCR_EL1: T0SZ=32, TG0=4KB, EPD1=1, Non-cacheable walks + let tcr: u64 = 0x5b5103020; // ORGN0=00, IRGN0=00 asm!("msr tcr_el1, {}", in(reg) tcr); // 4. TTBR0_EL1: Point to L1_TABLE @@ -117,11 +118,12 @@ pub fn init() { // UART is at 0x09000000 map_range(0x09000000, 0x09000000, 4096, MapPermission::KernelRWDevice); - // Map PCI ECAM (0x3f000000) + // Map PCI ECAM (Virtual 0x20000000 -> Physical 0x40_1000_0000) + // Highmem ECAM is 256MB map_range( - 0x3f000000, - 0x3f000000, - 0x1000000, + 0x20000000, + 0x40_1000_0000, + 0x10000000, MapPermission::KernelRWDevice, ); @@ -159,6 +161,123 @@ fn populate_commpage() { } pub static mut COMMPAGE_STORAGE: [u8; 65536] = [0; 65536]; +static mut ZERO_PAGE: [u8; 4096] = [0; 4096]; +static mut ZERO_L3_TABLE: PageTable = PageTable([0; 512]); +static mut ZERO_MMU_INIT: bool = false; + +fn init_zero_mmu() { + unsafe { + if ZERO_MMU_INIT { + return; + } + let paddr = core::ptr::addr_of!(ZERO_PAGE) as u64; + let attr = MAIR_MEM; + let sh = SH_INNER; + let ap = AP_RO_EL0_EL1; // Default to User RO + let xn = UXN | PXN; + for i in 0..512 { + ZERO_L3_TABLE.0[i] = paddr | DESC_VALID | DESC_PAGE | attr | AF | sh | ap | xn; + } + ZERO_MMU_INIT = true; + } +} + +pub fn map_zero_range(vaddr: u64, size: u64, perm: MapPermission) { + init_zero_mmu(); + unsafe { + let start_v = vaddr & !0xFFF; + let end_v = core::cmp::min(0x1_0000_0000, (vaddr + size + 0xFFF) & !0xFFF); + + let mut curr_v = start_v; + while curr_v < end_v { + let l1_idx = (curr_v >> 30) as usize; + let l2_idx = ((curr_v >> 21) & 0x1FF) as usize; + let l3_idx = ((curr_v >> 12) & 0x1FF) as usize; + + if l1_idx >= 512 { + break; + } + + // Optimization: If we are 1GB aligned and have at least 1GB left, + // we could theoretically point L1 to a shared L2 table. + // But for now, let's just ensure L2 exists. + let mut l1_entry = core::ptr::read_volatile(&L1_TABLE.0[l1_idx]); + if (l1_entry & DESC_VALID) == 0 { + if L2_ALLOC_IDX >= 16 { + panic!("Out of L2 tables!"); + } + let l2_table_ptr = &mut L2_POOL[L2_ALLOC_IDX]; + L2_ALLOC_IDX += 1; + for entry in l2_table_ptr.0.iter_mut() { + *entry = 0; + } + l1_entry = (l2_table_ptr as *const _ as u64) | DESC_VALID | DESC_TABLE; + core::ptr::write_volatile(&mut L1_TABLE.0[l1_idx], l1_entry); + } + + let l2_ptr = (l1_entry & TABLE_ADDR_MASK) as *mut PageTable; + + // Optimization: If we are 2MB aligned and have at least 2MB left, use ZERO_L3_TABLE + if curr_v & 0x1FFFFF == 0 && (end_v - curr_v) >= 0x200000 { + let l2_entry = + (core::ptr::addr_of!(ZERO_L3_TABLE) as u64) | DESC_VALID | DESC_TABLE; + core::ptr::write_volatile(&mut (*l2_ptr).0[l2_idx], l2_entry); + curr_v += 0x200000; + continue; + } + + let mut l2_entry = core::ptr::read_volatile(&(*l2_ptr).0[l2_idx]); + if (l2_entry & DESC_VALID) == 0 { + if L3_ALLOC_IDX >= 2048 { + panic!("Out of L3 tables!"); + } + let l3_table_ptr = &mut L3_POOL[L3_ALLOC_IDX]; + L3_ALLOC_IDX += 1; + for entry in l3_table_ptr.0.iter_mut() { + *entry = 0; + } + l2_entry = (l3_table_ptr as *const _ as u64) | DESC_VALID | DESC_TABLE; + core::ptr::write_volatile(&mut (*l2_ptr).0[l2_idx], l2_entry); + } else if (l2_entry & DESC_TABLE) == 0 { + // Split block + let block_paddr = l2_entry & BLOCK_ADDR_MASK; + let block_flags = l2_entry & !TABLE_ADDR_MASK; + if L3_ALLOC_IDX >= 2048 { + panic!("Out of L3 tables!"); + } + let l3_idx_to_use = L3_ALLOC_IDX; + L3_ALLOC_IDX += 1; + for p in 0..512 { + core::ptr::write_volatile( + &mut L3_POOL[l3_idx_to_use].0[p], + (block_paddr + (p as u64 * 0x1000)) + | DESC_VALID + | DESC_PAGE + | (block_flags & !DESC_TABLE), + ); + } + l2_entry = (&L3_POOL[l3_idx_to_use] as *const _ as u64) | DESC_VALID | DESC_TABLE; + core::ptr::write_volatile(&mut (*l2_ptr).0[l2_idx], l2_entry); + } + + let l3_ptr = (l2_entry & TABLE_ADDR_MASK) as *mut PageTable; + let ap = get_ap_bits(perm); + let xn = get_xn_bits(perm); + let attr = MAIR_MEM; + let sh = SH_INNER; + let paddr = core::ptr::addr_of!(ZERO_PAGE) as u64; + + core::ptr::write_volatile( + &mut (*l3_ptr).0[l3_idx], + paddr | DESC_VALID | DESC_PAGE | attr | AF | sh | ap | xn, + ); + + curr_v += 0x1000; + } + + asm!("dsb ish", "tlbi vmalle1is", "dsb ish", "isb"); + } +} #[derive(Copy, Clone, PartialEq)] pub enum MapPermission { @@ -177,16 +296,18 @@ fn get_ap_bits(perm: MapPermission) -> u64 { MapPermission::KernelRO => AP_RO_EL1, MapPermission::KernelRWDevice => AP_RW_EL1, MapPermission::UserRW => AP_RW_EL0_EL1, - MapPermission::UserRO => AP_RO_EL0_EL1, - MapPermission::UserRX => AP_RO_EL0_EL1, + MapPermission::UserRO => AP_RW_EL0_EL1, // Force RW for RO pages too (dyld self-modifying) + MapPermission::UserRX => AP_RW_EL0_EL1, // Force RW for RX pages too MapPermission::UserRWX => AP_RW_EL0_EL1, } } fn get_xn_bits(perm: MapPermission) -> u64 { match perm { - MapPermission::UserRX | MapPermission::UserRWX => 0, // Both EL0 and EL1 can execute (PXN=0, UXN=0) - MapPermission::UserRO | MapPermission::UserRW => UXN | PXN, + MapPermission::UserRX + | MapPermission::UserRWX + | MapPermission::UserRW + | MapPermission::UserRO => 0, // Allow execution for all user pages for now (dyld hacks) MapPermission::KernelRWDevice => UXN | PXN, MapPermission::KernelRO | MapPermission::KernelRW => UXN, // Kernel non-exec } @@ -194,21 +315,24 @@ fn get_xn_bits(perm: MapPermission) -> u64 { pub fn map_range(vaddr: u64, paddr: u64, size: u64, perm: MapPermission) { let start_v = vaddr & !0xFFF; - let end_v = (vaddr + size + 0xFFF) & !0xFFF; + let end_v = core::cmp::min(0x1_0000_0000, (vaddr + size + 0xFFF) & !0xFFF); let mut curr_p = paddr & !0xFFF; - for curr_v in (start_v..end_v).step_by(0x1000) { + let mut curr_v = start_v; + while curr_v < end_v { let l1_idx = (curr_v >> 30) as usize; let l2_idx = ((curr_v >> 21) & 0x1FF) as usize; let l3_idx = ((curr_v >> 12) & 0x1FF) as usize; unsafe { if l1_idx >= 512 { + curr_v += 0x1000; continue; } // Ensure L2 exists - if (L1_TABLE.0[l1_idx] & DESC_VALID) == 0 { + let mut l1_entry = core::ptr::read_volatile(&L1_TABLE.0[l1_idx]); + if (l1_entry & DESC_VALID) == 0 { // Allocate from L2_POOL if L2_ALLOC_IDX >= 16 { panic!("Out of L2 tables!"); @@ -220,16 +344,34 @@ pub fn map_range(vaddr: u64, paddr: u64, size: u64, perm: MapPermission) { *entry = 0; } let l2_table_addr = l2_table_ptr as *const _ as u64; - L1_TABLE.0[l1_idx] = l2_table_addr | DESC_VALID | DESC_TABLE; + l1_entry = l2_table_addr | DESC_VALID | DESC_TABLE; + core::ptr::write_volatile(&mut L1_TABLE.0[l1_idx], l1_entry); } - let l2_ptr = (L1_TABLE.0[l1_idx] & TABLE_ADDR_MASK) as *mut PageTable; + let l2_ptr = (l1_entry & TABLE_ADDR_MASK) as *mut PageTable; + let ap = get_ap_bits(perm); + let xn = get_xn_bits(perm); + let is_device = perm == MapPermission::KernelRWDevice; + let attr = if is_device { MAIR_DEV } else { MAIR_MEM }; + let sh = if is_device { 0 } else { SH_INNER }; + + // Can we do a 2MB block mapping? + // Needs to be 2MB aligned (both V and P) and size must be at least 2MB. + if curr_v & 0x1FFFFF == 0 && curr_p & 0x1FFFFF == 0 && (end_v - curr_v) >= 0x200000 { + core::ptr::write_volatile( + &mut (*l2_ptr).0[l2_idx], + curr_p | DESC_VALID | DESC_BLOCK | attr | AF | sh | ap | xn, + ); + curr_v += 0x200000; + curr_p += 0x200000; + continue; + } // Ensure L3 exists (pointing from L2) - let l2_entry = (*l2_ptr).0[l2_idx]; + let mut l2_entry = core::ptr::read_volatile(&(*l2_ptr).0[l2_idx]); if (l2_entry & DESC_VALID) == 0 { // New table - if L3_ALLOC_IDX >= 256 { + if L3_ALLOC_IDX >= 2048 { panic!("Out of L3 tables!"); } let l3_table_ptr = &mut L3_POOL[L3_ALLOC_IDX]; @@ -240,19 +382,20 @@ pub fn map_range(vaddr: u64, paddr: u64, size: u64, perm: MapPermission) { } let l3_table_addr = l3_table_ptr as *const _ as u64; - (*l2_ptr).0[l2_idx] = l3_table_addr | DESC_VALID | DESC_TABLE; + l2_entry = l3_table_addr | DESC_VALID | DESC_TABLE; + core::ptr::write_volatile(&mut (*l2_ptr).0[l2_idx], l2_entry); } else if (l2_entry & DESC_TABLE) == 0 { // It was a block mapping! Split it. - kprintln!("MMU: Splitting block at vaddr {:x}", curr_v & !0x1FFFFF); + // kprintln!("MMU: Splitting block at vaddr {:x}", curr_v & !0x1FFFFF); // For 2MB blocks, the address is at bits [47:21] let block_paddr = l2_entry & BLOCK_ADDR_MASK; let block_flags = l2_entry & !TABLE_ADDR_MASK; - let l3_idx_to_use = L3_ALLOC_IDX; - L3_ALLOC_IDX += 1; - if L3_ALLOC_IDX >= 256 { + if L3_ALLOC_IDX >= 2048 { panic!("Out of L3 tables!"); } + let l3_idx_to_use = L3_ALLOC_IDX; + L3_ALLOC_IDX += 1; // Populate the new L3 table with 512 pages from the block for p in 0..512 { @@ -265,38 +408,19 @@ pub fn map_range(vaddr: u64, paddr: u64, size: u64, perm: MapPermission) { ); } - core::ptr::write_volatile( - &mut (*l2_ptr).0[l2_idx], - (&L3_POOL[l3_idx_to_use] as *const _ as u64) | DESC_VALID | DESC_TABLE, - ); + l2_entry = (&L3_POOL[l3_idx_to_use] as *const _ as u64) | DESC_VALID | DESC_TABLE; + core::ptr::write_volatile(&mut (*l2_ptr).0[l2_idx], l2_entry); } - let l3_ptr = ((*l2_ptr).0[l2_idx] & TABLE_ADDR_MASK) as *mut PageTable; - let ap = get_ap_bits(perm); - let xn = get_xn_bits(perm); - let is_device = perm == MapPermission::KernelRWDevice; - let attr = if is_device { MAIR_DEV } else { MAIR_MEM }; - let sh = if is_device { 0 } else { SH_INNER }; + let l3_ptr = (l2_entry & TABLE_ADDR_MASK) as *mut PageTable; core::ptr::write_volatile( &mut (*l3_ptr).0[l3_idx], curr_p | DESC_VALID | DESC_PAGE | attr | AF | sh | ap | xn, ); - // Debug: verify first and last mapping - if curr_v == start_v || curr_v + 0x1000 >= end_v { - kprintln!( - "map_range: v={:x} p={:x} L1={} L2={} L3={} entry={:016x}", - curr_v, - curr_p, - l1_idx, - l2_idx, - l3_idx, - core::ptr::read_volatile(&(*l3_ptr).0[l3_idx]) - ); - } - curr_p += 0x1000; + curr_v += 0x1000; } } diff --git a/src/kernel/src/process.rs b/src/kernel/src/process.rs index 883e70f..536ea8d 100644 --- a/src/kernel/src/process.rs +++ b/src/kernel/src/process.rs @@ -19,13 +19,26 @@ pub struct CpuContext { } static mut EXCEPTION_COUNT: u32 = 0; +static mut IN_EXCEPTION: bool = false; #[unsafe(no_mangle)] pub extern "C" fn handle_sync_exception(frame: &mut TrapFrame) { unsafe { + if IN_EXCEPTION { + // Recursive exception! + kprintln!( + "RECURSIVE EXCEPTION! SPSR: {:x} PC: {:x} FAR: {:x}", + frame.spsr, + frame.elr, + 0 // FAR + ); + loop { + asm!("wfe") + } + } + IN_EXCEPTION = true; EXCEPTION_COUNT += 1; - if EXCEPTION_COUNT > 100 { - // Probably a loop in exception handler + if EXCEPTION_COUNT > 1000 { loop { asm!("wfe") } @@ -89,11 +102,17 @@ pub extern "C" fn handle_sync_exception(frame: &mut TrapFrame) { dump_mem(far & !0x3F, 128); } + unsafe { + IN_EXCEPTION = false; + } loop { unsafe { asm!("wfe") } } } } + unsafe { + IN_EXCEPTION = false; + } } fn dump_registers(frame: &TrapFrame) { @@ -126,7 +145,7 @@ fn dump_mem(addr: u64, len: u64) { // Basic safety check for known mapped user/kernel regions let is_ram = (0x20000000..0x80000000).contains(&curr); let is_io = (0x09000000..0x09001000).contains(&curr); // UART - let is_low = (0..0x1000000).contains(&curr); // Low mem (app) + let is_low = (0..0x20000000).contains(&curr); // Low mem (app + dyld + heap) let is_sc = (0x30000000..0x40000000).contains(&curr); // Shared cache if !is_ram && !is_io && !is_low && !is_sc { @@ -226,6 +245,20 @@ fn handle_a32_mach_trap(frame: &mut TrapFrame, syscall_num: i32, _iss: u32) { let rcv_name = frame.x[4] as u32; let timeout = frame.x[5] as u32; + if !msg.is_null() && (option & crate::ipc::MACH_SEND_MSG) != 0 { + let h = unsafe { *msg }; + kprintln!( + "mach_msg_trap SEND: id={:x} remote={:x} local={:x} size={:x} bits={:x}", + h.msgh_id, + h.msgh_remote_port, + h.msgh_local_port, + h.msgh_size, + h.msgh_bits + ); + // Dump first 24 bytes of message + dump_mem(frame.x[0], 24); + } + let mut sched = SCHEDULER.lock(); if let Some(space) = sched.current_ipc_space() { let res = crate::ipc::mach_msg( @@ -237,6 +270,16 @@ fn handle_a32_mach_trap(frame: &mut TrapFrame, syscall_num: i32, _iss: u32) { let mut header = core::ptr::read_volatile(msg); header.msgh_local_port = rcv_name; core::ptr::write_volatile(msg, header); + + kprintln!( + "mach_msg_trap RCV: id={:x} remote={:x} local={:x} size={:x} bits={:x}", + header.msgh_id, + header.msgh_remote_port, + header.msgh_local_port, + header.msgh_size, + header.msgh_bits + ); + dump_mem(frame.x[0], 24); } } res as u64 @@ -380,13 +423,18 @@ fn handle_a32_syscall_internal(frame: &mut TrapFrame, syscall_num: i32) { } 37 => { // kill - kprintln!( - "A32 Syscall: num=37 (kill) pid={} sig={}", - frame.x[0], - frame.x[1] - ); + let pid = frame.x[0] as i32; + let sig = frame.x[1] as i32; + kprintln!("A32 Syscall: num=37 (kill) pid={} sig={}", pid, sig); frame.x[0] = 0; frame.spsr &= !0x20000000; + + if sig == 6 || sig == 9 { + kprintln!("Process {} killed/aborted. Stopping execution.", pid); + loop { + unsafe { asm!("wfe") } + } + } } 43 => { frame.x[0] = 20; @@ -669,9 +717,24 @@ fn handle_a32_syscall_internal(frame: &mut TrapFrame, syscall_num: i32) { frame.spsr |= 0x20000000; } 274 => { - // sysctlbyname - frame.x[0] = 0; - frame.spsr &= !0x20000000; + // sysctlbyname(name, oldp, oldlenp, newp, newlen) + let name_ptr = frame.x[0] as *const u8; + let mut name_buf = [0u8; 64]; + let mut i = 0; + while i < 63 { + let c = unsafe { core::ptr::read(name_ptr.add(i)) }; + if c == 0 { + break; + } + name_buf[i] = c; + i += 1; + } + if let Ok(name) = core::str::from_utf8(&name_buf[..i]) { + kprintln!("A32 Syscall: num=274 (sysctlbyname) name='{}'", name); + } + + frame.x[0] = 2; // ENOENT + frame.spsr |= 0x20000000; } 281 => { // sigaltstack @@ -679,10 +742,50 @@ fn handle_a32_syscall_internal(frame: &mut TrapFrame, syscall_num: i32) { frame.spsr &= !0x20000000; } 294 => { - // shared_region_check_np - kprintln!("A32 Syscall: num=294 (shared_region_check_np) -> ENOSYS"); - frame.x[0] = 78; // ENOSYS - frame.spsr |= 0x20000000; + // shared_region_check_np(uint64_t *start_address) + kprintln!( + "A32 Syscall: num=294 (shared_region_check_np) ptr={:x}", + frame.x[0] + ); + let ptr = frame.x[0] as *mut u64; + // Return the address where we mapped the cache + unsafe { + *ptr = 0x30000000; + } + frame.x[0] = 0; // Success + frame.spsr &= !0x20000000; + } + -3 => { + // mach_absolute_time() + // Return a monotonic time. For now, just a counter or generic large number. + // AArch32 result in r0:r1. + static mut TIME_COUNTER: u64 = 0x8000; + let t = unsafe { + TIME_COUNTER += 1000; + TIME_COUNTER + }; + frame.x[0] = t & 0xFFFFFFFF; // r0 + frame.x[1] = (t >> 32) & 0xFFFFFFFF; // r1 + frame.spsr &= !0x20000000; + } + -11 => { + // mach_vm_read(target_task, address, size, &data, &msg_type) + // This is complex as it involves VM copy. + // For now, let's claim success but return 0 bytes read? + // Or maybe just ENOTSUP (46) if it's not critical. + // The crash at 2fe17e1f right after might suggest it expects valid return values. + // Let's print arguments. + kprintln!( + "mach_vm_read: task={} addr={:x} size={:x} data_ptr={:x}", + frame.x[0], + frame.x[1], + frame.x[2], + frame.x[3] + ); + + // Return KERN_FAILURE (5) to indicate we didn't read anything + frame.x[0] = 5; + frame.spsr &= !0x20000000; } 301 => { // psynch_mutexwait @@ -702,8 +805,8 @@ fn handle_a32_syscall_internal(frame: &mut TrapFrame, syscall_num: i32) { } 327 => { // issetugid - kprintln!("A32 Syscall: num=327 (issetugid)"); - frame.x[0] = 1; + kprintln!("A32 Syscall: num=327 (issetugid) -> 0"); + frame.x[0] = 0; frame.spsr &= !0x20000000; } 338 => { @@ -802,11 +905,16 @@ fn handle_a32_syscall_internal(frame: &mut TrapFrame, syscall_num: i32) { let count = frame.x[1] as usize; let mappings = frame.x[2] as *const crate::ipc::SharedRegionMapping; + let slide = frame.x[3] as usize; + kprintln!( - "A32 Syscall: num=438 (shared_region_map_and_slide_np) fd={} count={}", + "A32 Syscall: num=438 (shared_region_map_and_slide_np) fd={} count={} mappings_ptr={:x} slide={:x}", fd, - count + count, + frame.x[2], + slide ); + dump_mem(frame.x[2], count as u64 * 32); let mut sched = SCHEDULER.lock(); if let Some(proc) = sched.current_process.as_mut() { @@ -824,16 +932,34 @@ fn handle_a32_syscall_internal(frame: &mut TrapFrame, syscall_num: i32) { ); // Only allocate/load what's actually in the file - let data_size = if m.file_offset < file_size { + let data_size_unaligned = if m.file_offset < file_size { core::cmp::min(m.size, file_size - m.file_offset) } else { 0 }; + let mut data_size = + core::cmp::min(m.size, (data_size_unaligned + 4095) & !4095); + + // CLIP: Do not map into kernel space (> 1GB) + let max_user_addr = 0x40000000; + if m.address >= max_user_addr { + kprintln!(" Skipping segment outside user range: {:x}", m.address); + continue; + } + if m.address + data_size > max_user_addr { + kprintln!( + " Clipping data part from {:x} to {:x}", + m.address + data_size, + max_user_addr + ); + data_size = max_user_addr - m.address; + } + // Map the data part (file-backed) if data_size > 0 { - // Allocate physical memory for the data part from heap + let alloc_size = (data_size + 4095) & !4095; let layout = - core::alloc::Layout::from_size_align(data_size as usize, 4096) + core::alloc::Layout::from_size_align(alloc_size as usize, 4096) .unwrap(); let phys_ptr = unsafe { alloc::alloc::alloc_zeroed(layout) }; if phys_ptr.is_null() { @@ -844,39 +970,65 @@ fn handle_a32_syscall_internal(frame: &mut TrapFrame, syscall_num: i32) { } let paddr = phys_ptr as u64; - // Map it - crate::mmu::map_range( - m.address, - paddr, - data_size, - crate::mmu::MapPermission::UserRWX, - ); - - // Read data from shared cache file in 4KB chunks + // Read data from shared cache file into the physical buffer handle.seek(m.file_offset); - let total_to_read = data_size as usize; + let total_to_read = + core::cmp::min(data_size_unaligned, data_size) as usize; let mut offset = 0; while offset < total_to_read { - let chunk_size = core::cmp::min(4096, total_to_read - offset); + let chunk_size = + core::cmp::min(1024 * 1024, total_to_read - offset); let slice = unsafe { core::slice::from_raw_parts_mut( - (m.address as usize + offset) as *mut u8, + (phys_ptr as usize + offset) as *mut u8, chunk_size, ) }; handle.read(slice); offset += chunk_size; } - } - if m.size > data_size { - kprintln!( - " Segment {:x} has {:x} bytes of virtual padding", + // Now map the data part to the user's address + crate::mmu::map_range( m.address, - m.size - data_size + paddr, + data_size, + crate::mmu::MapPermission::UserRWX, ); } + // If there is virtual padding (BSS/Zero-fill), map it as zeroed pages + // DISABLED: This was overwriting adjacent segments due to large padding ranges in Segment 4 + /* + if m.size > data_size { + let mut padding_size = m.size - data_size; + let padding_addr = m.address + data_size; + + if padding_addr < max_user_addr { + if padding_addr + padding_size > max_user_addr { + kprintln!( + " Clipping padding from {:x} to {:x}", + padding_addr + padding_size, + max_user_addr + ); + padding_size = max_user_addr - padding_addr; + } + + kprintln!( + " Mapping padding: addr={:x} size={:x}", + padding_addr, + padding_size + ); + // Use map_zero_range to avoid physical allocations for padding + crate::mmu::map_zero_range( + padding_addr, + padding_size, + crate::mmu::MapPermission::UserRWX, + ); + } + } + */ + kprintln!(" Mapped segment {:x} successfully", m.address); } } @@ -888,10 +1040,12 @@ fn handle_a32_syscall_internal(frame: &mut TrapFrame, syscall_num: i32) { } _ => { kprintln!( - "Unknown A32 syscall: num={} R0={:x} PC={:x}", + "Unknown A32 syscall: num={} R0={:x} PC={:x} SP={:x} LR={:x}", syscall_num, frame.x[0], - frame.elr + frame.elr, + frame.x[13], + frame.x[14] ); kprintln!("Code at PC:"); dump_mem((frame.elr & !0xF).saturating_sub(32), 64); @@ -918,7 +1072,9 @@ fn sys_write(fd: u64, buf: u64, len: u64) { if fd == 1 || fd == 2 || fd == 4 { let slice = unsafe { core::slice::from_raw_parts(buf as *const u8, len as usize) }; if let Ok(s) = core::str::from_utf8(slice) { - kprintln!("sys_write: {}", s); + kprintln!("sys_write(fd={}): {}", fd, s); + } else { + kprintln!("sys_write(fd={}): [Binary Data] {:?}", fd, slice); } } } @@ -950,7 +1106,7 @@ fn sys_exit() { fn sys_spawn(fn_ptr: u64, arg: u64) -> u64 { let mut scheduler = SCHEDULER.lock(); // For now, kernel-spawned threads in EL0 - let process = crate::scheduler::Process::new(fn_ptr, 0, &[arg], 0, true); + let process = crate::scheduler::Process::new(fn_ptr, 0, core::slice::from_ref(&arg), 0, true); let pid = process.pid; scheduler.add_process(process); pid diff --git a/src/kernel/src/virtio.rs b/src/kernel/src/virtio.rs index d788cb7..f6f58ff 100644 --- a/src/kernel/src/virtio.rs +++ b/src/kernel/src/virtio.rs @@ -37,8 +37,8 @@ fn cache_invalidate_range(addr: usize, len: usize) { } } -// QEMU virt PCI ECAM base address -const PCI_ECAM_BASE: usize = 0x3f00_0000; +// QEMU virt PCI ECAM base address (mapped to 0x40_1000_0000 physical) +const PCI_ECAM_BASE: usize = 0x2000_0000; // PCI config space offsets const PCI_VENDOR_ID: usize = 0x00; @@ -168,7 +168,8 @@ struct VirtioCaps { } fn find_virtio_caps(bus: u8, dev: u8, func: u8) -> Option { - let status = pci_read16(bus, dev, func, PCI_STATUS); + let status_cmd = pci_read32(bus, dev, func, PCI_COMMAND); + let status = (status_cmd >> 16) as u16; if (status & 0x10) == 0 { return None; } @@ -231,11 +232,13 @@ fn pci_assign_bar(bus: u8, dev: u8, func: u8, bar_num: u8) -> u32 { fn scan_pci() -> Option<(u8, u8, u8, VirtioCaps)> { kprintln!("Virtio: Scanning PCI bus..."); for dev in 0..32 { - let vendor = pci_read16(0, dev, 0, PCI_VENDOR_ID); + let id_val = pci_read32(0, dev, 0, PCI_VENDOR_ID); + let vendor = (id_val & 0xFFFF) as u16; + let device = (id_val >> 16) as u16; + if vendor == 0xFFFF { continue; } - let device = pci_read16(0, dev, 0, PCI_DEVICE_ID); kprintln!( "PCI: Found device {:04x}:{:04x} at 0:{}:0", vendor, @@ -246,7 +249,8 @@ fn scan_pci() -> Option<(u8, u8, u8, VirtioCaps)> { && (device == VIRTIO_BLK_DEVICE_ID_LEGACY || device == VIRTIO_BLK_DEVICE_ID_MODERN) { kprintln!("Virtio: Found blk device, enabling..."); - let cmd = pci_read16(0, dev, 0, PCI_COMMAND); + let cmd_status = pci_read32(0, dev, 0, PCI_COMMAND); + let cmd = (cmd_status & 0xFFFF) as u16; pci_write16(0, dev, 0, PCI_COMMAND, cmd | 0x06); if let Some(caps) = find_virtio_caps(0, dev, 0) { pci_assign_bar(0, dev, 0, caps.common_cfg_bar); diff --git a/src/kernel/src/zalloc.rs b/src/kernel/src/zalloc.rs new file mode 100644 index 0000000..13e84d7 --- /dev/null +++ b/src/kernel/src/zalloc.rs @@ -0,0 +1,122 @@ +#![allow(dead_code)] + +use alloc::vec; +use alloc::vec::Vec; + +/// A simple compressed memory allocator (zram-like). +/// It takes input data (e.g. a page), compresses it using Zstd, +/// and stores it. It returns a handle to the stored data. +pub struct ZAllocator { + // In a real zsmalloc, we would have size classes and dedicated pages. + // Here we wrap the system allocator but provide compression. + // We use a simple counter for handles. + // For now, let's simpler: just provide compress/decompress helpers + // and maybe a simple store if needed. +} + +// Global buffer for compression to avoid constant reallocation? +// Thread safety issues if we have multiple cores. +// Let's stick to allocating for now. + +/// Compress data using Zstd. +/// Returns a Vec containing the compressed data. +pub fn zcompress(data: &[u8]) -> Result, &'static str> { + // zstd-safe is a safe wrapper around zstd-sys. + // It does not have stream::encode_all. We must use simple API. + + // Estimate bounds + let bound = zstd_safe::compress_bound(data.len()); + let mut buffer = vec![0u8; bound]; + + // Level 1 for speed + match zstd_safe::compress(&mut buffer[..], data, 1) { + Ok(len) => { + buffer.truncate(len); + Ok(buffer) + } + Err(_) => Err("Compression failed"), + } +} + +/// Decompress data using Zstd. +/// We don't know the exact uncompressed size usually, unless stored. +/// But for pages, we usually know (e.g. 4096 or 16384). +/// For generic use, we might need a loop or header. +/// However, zstd frames include content size if not disabled. +pub fn zdecompress(data: &[u8]) -> Result, &'static str> { + // Try to find content size + let content_size = zstd_safe::get_frame_content_size(data).unwrap_or(None); + + let mut capacity = if let Some(size) = content_size { + size as usize + } else { + // Fallback: Guess 4x compression or just 4096 for pages + 4096 * 4 + }; + + // Safety check for OOM vectors + if capacity > 16 * 1024 * 1024 { + capacity = 16 * 1024 * 1024; + } + + let mut buffer = vec![0u8; capacity]; + + match zstd_safe::decompress(&mut buffer[..], data) { + Ok(len) => { + buffer.truncate(len); + Ok(buffer) + } + Err(_) => Err("Decompression failed"), + } +} +/// A "ZRAM" block device simulator. +/// Stores pages in a compressed format in memory. +pub struct ZRamDevice { + blocks: Vec>>, + block_size: usize, +} + +impl ZRamDevice { + pub fn new(num_blocks: usize, block_size: usize) -> Self { + let mut blocks = Vec::with_capacity(num_blocks); + for _ in 0..num_blocks { + blocks.push(None); + } + Self { blocks, block_size } + } + + pub fn write_block(&mut self, index: usize, data: &[u8]) -> Result<(), &'static str> { + if index >= self.blocks.len() || data.len() != self.block_size { + return Err("Invalid argument"); + } + + // Compress + let compressed = zcompress(data)?; + // Store + self.blocks[index] = Some(compressed); + Ok(()) + } + + pub fn read_block(&self, index: usize, out: &mut [u8]) -> Result<(), &'static str> { + if index >= self.blocks.len() || out.len() != self.block_size { + return Err("Invalid argument"); + } + + if let Some(ref compressed) = self.blocks[index] { + // We know the expected output size is self.block_size + match zstd_safe::decompress(out, compressed) { + Ok(len) => { + if len != self.block_size { + return Err("Decompressed size mismatch"); + } + Ok(()) + } + Err(_) => Err("Decompression failed"), + } + } else { + // Block not present, return zeros? + out.fill(0); + Ok(()) + } + } +} diff --git a/src/lib/apple-dmg/package.nix b/src/lib/apple-dmg/package.nix deleted file mode 100644 index 34f121e..0000000 --- a/src/lib/apple-dmg/package.nix +++ /dev/null @@ -1,11 +0,0 @@ -{ craneLib, commonArgs, ... }: - -craneLib.buildPackage ( - commonArgs - // { - pname = "apple-dmg"; - version = "0.1.0"; - cargoExtraArgs = "-p apple-dmg"; - doCheck = false; - } -) diff --git a/src/lib/dyld/Cargo.toml b/src/lib/dyld/Cargo.toml index 99eab99..fe154a1 100644 --- a/src/lib/dyld/Cargo.toml +++ b/src/lib/dyld/Cargo.toml @@ -1,13 +1,9 @@ [package] name = "dyld" version = "0.1.0" -edition = "2021" +edition = "2024" [dependencies] -goblin = { workspace = true } -spin = { workspace = true } -bitflags = "2.10.0" linked_list_allocator = { workspace = true } - -[features] -default = [] +goblin = { workspace = true } +loader = { path = "../loader" } diff --git a/src/lib/dyld/build.rs b/src/lib/dyld/build.rs index 1610ddc..e1fea09 100644 --- a/src/lib/dyld/build.rs +++ b/src/lib/dyld/build.rs @@ -1,3 +1,9 @@ +use std::env; +use std::path::PathBuf; + fn main() { - println!("cargo:rustc-link-arg=-Wl,-e,_dyld_start"); + let manifest_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap()); + let linker_script = manifest_dir.join("linker.ld"); + println!("cargo:rustc-link-arg=-T{}", linker_script.display()); + println!("cargo:rerun-if-changed=linker.ld"); } diff --git a/src/lib/dyld/linker.ld b/src/lib/dyld/linker.ld index 3ee4c26..29cf05c 100644 --- a/src/lib/dyld/linker.ld +++ b/src/lib/dyld/linker.ld @@ -1,27 +1,17 @@ +ENTRY(dyld_entry) SECTIONS { - . = 0x3FFFF000; /* Match load_offset in kernel */ - - .text : { - KEEP(*(.text.entry)) - *(.text*) + . = 0x200000; + .text : ALIGN(4096) { + *(.text*) } - - .rodata : { - *(.rodata*) + .rodata : ALIGN(4096) { + *(.rodata*) } - - .data : { - *(.data*) + .data : ALIGN(4096) { + *(.data*) } - - .bss : { - *(.bss*) - *(COMMON) + .bss : ALIGN(4096) { + *(.bss*) } - - /DISCARD/ : { - *(.comment) - *(.note*) - } -} +} \ No newline at end of file diff --git a/src/lib/dyld/package.nix b/src/lib/dyld/package.nix deleted file mode 100644 index f20d985..0000000 --- a/src/lib/dyld/package.nix +++ /dev/null @@ -1,22 +0,0 @@ -{ - craneLib, - commonArgs, - stdenv, - ... -}: - -craneLib.buildPackage ( - commonArgs - // { - pname = "dyld"; - version = "0.1.0"; - cargoExtraArgs = "-p dyld"; - doCheck = false; - - nativeBuildInputs = (commonArgs.nativeBuildInputs or [ ]) ++ [ - stdenv.cc - ]; - - RUSTFLAGS = "-Clinker=clang -Clink-arg=--ld-path=ld.lld -Clink-arg=-nostdlib -Clink-arg=--target=aarch64-unknown-none-elf"; - } -) diff --git a/src/lib/dyld/src/cache.rs b/src/lib/dyld/src/cache.rs index d18a26b..000ce23 100644 --- a/src/lib/dyld/src/cache.rs +++ b/src/lib/dyld/src/cache.rs @@ -25,6 +25,14 @@ pub struct SharedCache { impl SharedCache { pub unsafe fn from_addr(addr: usize) -> Option { + if addr == 0 { + return None; + } + + // TODO: Map the shared cache in kernel and validate it here. + // For now, returning None avoids a data abort if 0x30000000 is not mapped. + None + /* let header = &*(addr as *const DyldCacheHeader); if &header.magic[0..4] != b"dyld" { return None; @@ -32,27 +40,30 @@ impl SharedCache { Some(Self { base_addr: addr as *const u8, }) + */ } pub unsafe fn find_dylib(&self, path: &str) -> Option<*const u8> { - let header = &*(self.base_addr as *const DyldCacheHeader); - let images = slice::from_raw_parts( - self.base_addr.add(header.images_offset as usize) as *const DyldCacheImageInfo, - header.images_count as usize, - ); + unsafe { + let header = &*(self.base_addr as *const DyldCacheHeader); + let images = slice::from_raw_parts( + self.base_addr.add(header.images_offset as usize) as *const DyldCacheImageInfo, + header.images_count as usize, + ); - for image in images { - let image_path_ptr = self.base_addr.add(image.path_offset as usize) as *const u8; - let mut len = 0; - while *image_path_ptr.add(len) != 0 { - len += 1; - } - let image_path = - core::str::from_utf8(slice::from_raw_parts(image_path_ptr, len)).ok()?; - if image_path == path { - return Some(image.address as *const u8); + for image in images { + let image_path_ptr = self.base_addr.add(image.path_offset as usize) as *const u8; + let mut len = 0; + while *image_path_ptr.add(len) != 0 { + len += 1; + } + let image_path = + core::str::from_utf8(slice::from_raw_parts(image_path_ptr, len)).ok()?; + if image_path == path { + return Some(image.address as *const u8); + } } + None } - None } } diff --git a/src/lib/dyld/src/main.rs b/src/lib/dyld/src/main.rs index beee569..fbac658 100644 --- a/src/lib/dyld/src/main.rs +++ b/src/lib/dyld/src/main.rs @@ -10,215 +10,214 @@ static ALLOCATOR: LockedHeap = LockedHeap::empty(); static HEAP_SPACE: [u8; 1024 * 1024] = [0u8; 1024 * 1024]; // 1MB heap +/// # Safety +/// +/// Initializes the global allocator with a static heap buffer. +/// Must be called only once at startup. unsafe fn init_heap() { - ALLOCATOR - .lock() - .init(HEAP_SPACE.as_ptr() as *mut u8, HEAP_SPACE.len()); + unsafe { + ALLOCATOR + .lock() + .init(HEAP_SPACE.as_ptr() as *mut u8, HEAP_SPACE.len()) + }; } mod cache; -mod macho; use crate::cache::SharedCache; -use crate::macho::MachOContext; use alloc::vec::Vec; +use loader::LoaderError; +use loader::elf::ElfContext; +use loader::macho::MachOContext; + +pub enum ExecutableContext<'a> { + MachO(MachOContext<'a>), + Elf(ElfContext<'a>), +} pub struct DyldState<'a> { - pub main_executable: MachOContext<'a>, - pub libraries: Vec>, - pub cache: SharedCache, + pub main_executable: ExecutableContext<'a>, + pub libraries: Vec>, + pub cache: Option, } impl<'a> DyldState<'a> { - pub fn new(mh: *const u8, slide: usize, cache: SharedCache) -> Self { - let main_ctx = - unsafe { MachOContext::parse(mh, slide).expect("Failed to parse main Mach-O") }; - Self { - main_executable: main_ctx, + /// # Safety + /// + /// `mh` must be a valid pointer to a binary header. + pub unsafe fn new( + mh: *const u8, + slide: usize, + cache: Option, + ) -> Result { + // Detect format + let magic = unsafe { *(mh as *const u32) }; + let ctx = if magic == 0xfeedfacf || magic == 0xfeedface { + let macho = unsafe { MachOContext::parse(mh, slide)? }; + ExecutableContext::MachO(macho) + } else if magic == 0x464c457f { + // .ELF + let elf = unsafe { ElfContext::parse(mh, slide)? }; + ExecutableContext::Elf(elf) + } else { + return Err(LoaderError::InvalidMagic(magic)); + }; + + Ok(Self { + main_executable: ctx, libraries: Vec::new(), cache, - } + }) } } -#[no_mangle] -#[link_section = "__TEXT,__text"] -pub unsafe extern "C" fn dyld_start( - mh: *const u8, - slide: usize, - argc_ptr: *const u64, - _argv_ptr: *const *const u8, - _env_ptr: *const *const u8, - _apple_ptr: *const *const u8, -) -> ! { - init_heap(); - print("Hello from Rust dyld!\n"); - - // Print arguments for verification - print("Mach-O Header: "); - print_hex(mh as u64); - print("\n"); - - print("Slide: "); - print_hex(slide as u64); - print("\n"); - - if !argc_ptr.is_null() { - print("Argc: "); - print_hex(*argc_ptr); - print("\n"); - } - - // Find shared cache - let sc_base = 0x30000000usize; - // TODO: Parse apple_ptr to find dyld_shared_cache_base_address - - let cache = SharedCache::from_addr(sc_base).expect("Failed to find shared cache"); - print("Shared cache found at "); - print_hex(sc_base as u64); - print("\n"); - - let mut state = DyldState::new(mh, slide, cache); - - // Process dependent dylibs - for cmd in &state.main_executable.macho.load_commands { - if let goblin::mach::load_command::CommandVariant::LoadDylib(dylib_cmd) = &cmd.command { - let offset = dylib_cmd.dylib.name as usize; - let name_ptr = (mh as *const u8).add(cmd.offset + offset); - let mut len = 0; - while *name_ptr.add(len) != 0 { - len += 1; +unsafe fn run_dyld(mh: *const u8, slide: usize, _argc_ptr: *const u64) -> Result<(), LoaderError> { + unsafe { + init_heap(); + + // Find shared cache + let sc_base = 0x30000000usize; + // TODO: Parse apple_ptr to find dyld_shared_cache_base_address + + let cache = SharedCache::from_addr(sc_base); + + let mut state = DyldState::new(mh, slide, cache)?; + + // Process dependent libraries + match &state.main_executable { + ExecutableContext::MachO(ctx) => { + for cmd in &ctx.macho.load_commands { + if let goblin::mach::load_command::CommandVariant::LoadDylib(dylib_cmd) = + &cmd.command + { + let offset = dylib_cmd.dylib.name as usize; + let name_ptr = mh.add(cmd.offset + offset); + let mut len = 0; + while { *name_ptr.add(len) } != 0 { + len += 1; + } + let name = core::str::from_utf8_unchecked(core::slice::from_raw_parts( + name_ptr, len, + )); + + if let Some(cache) = &state.cache { + if let Some(dylib_addr) = cache.find_dylib(name) { + // Parse and add to state + if let Ok(lib_ctx) = MachOContext::parse(dylib_addr, 0) { + state.libraries.push(ExecutableContext::MachO(lib_ctx)); + } + } + } + } + } } - let name = core::str::from_utf8_unchecked(core::slice::from_raw_parts(name_ptr, len)); - - print("Loading dylib: "); - print(name); - print("\n"); - - if let Some(dylib_addr) = state.cache.find_dylib(name) { - print(" Found in cache at "); - print_hex(dylib_addr as u64); - print("\n"); - // Parse and add to state - if let Some(lib_ctx) = MachOContext::parse(dylib_addr, 0) { - // Slide 0 for cache? - state.libraries.push(lib_ctx); + ExecutableContext::Elf(ctx) => { + if let Some(dynamic) = &ctx.elf.dynamic { + for dyn_entry in &dynamic.dyns { + if dyn_entry.d_tag == goblin::elf::dynamic::DT_NEEDED { + // TODO: Load ELF libraries + } + } } - } else { - print(" NOT found in cache\n"); } } - } - // Apply relocations - state - .main_executable - .apply_relocations(&state.libraries, &state.cache) - .expect("Failed to apply relocations"); + // Apply relocations + match &mut state.main_executable { + ExecutableContext::MachO(ctx) => { + let libs: Vec = state + .libraries + .iter() + .filter_map(|l| match l { + ExecutableContext::MachO(m) => Some( + // Cloning MachOContext is cheap (just structs with refs) + // But MachO structure in goblin isn't Copy. + // We need to re-parse or change logic. + core::mem::transmute_copy(m), + ), + _ => None, + }) + .collect(); + + let cache_ref = state.cache.as_ref(); + ctx.apply_relocations(&libs, |_name| { + if let Some(_c) = cache_ref { + // This is specific to SharedCache which might not map 1:1 to symbols but let's try + // SharedCache usually finds dylibs, not symbols directly unless we parse them. + // For now return None + None + } else { + None + } + })?; + } + ExecutableContext::Elf(ctx) => { + let libs: Vec = state + .libraries + .iter() + .filter_map(|l| match l { + ExecutableContext::Elf(e) => Some(core::mem::transmute_copy(e)), + _ => None, + }) + .collect(); + + ctx.apply_relocations(&libs, |_name| None)?; + } + } - print("Jumping to entry point: "); - print_hex(state.main_executable.macho.entry + slide as u64); - print("\n"); + // Jump to entry + let entry_point = match &state.main_executable { + ExecutableContext::MachO(ctx) => ctx.macho.entry + slide as u64, + ExecutableContext::Elf(ctx) => ctx.elf.entry + slide as u64, + }; - let entry: extern "C" fn() = - core::mem::transmute(state.main_executable.macho.entry + slide as u64); - entry(); + let entry: extern "C" fn() = core::mem::transmute(entry_point); + entry(); - loop { - // For now, just yield or hang - core::arch::asm!("svc #0", in("x8") 0u64); + // Wait for interrupts + #[cfg(target_arch = "aarch64")] + { + loop { + core::arch::asm!("wfe"); + } + } } } -fn print(s: &str) { - let bytes = s.as_bytes(); +#[unsafe(no_mangle)] +/// # Safety +/// +/// Entry point for the dynamic linker. +/// Pointers must be valid. +pub unsafe extern "C" fn dyld_entry( + mh: *const u8, + slide: usize, + argc_ptr: *const u64, + _argv_ptr: *const *const u8, + _env_ptr: *const *const u8, + _apple_ptr: *const *const u8, +) { unsafe { - core::arch::asm!( - "svc #0", - in("x8") 2u64, // sys_write - in("x0") 1u64, // stdout - in("x1") bytes.as_ptr() as u64, - in("x2") bytes.len() as u64, - ); - } -} - -fn print_hex(val: u64) { - let mut buf = [0u8; 18]; - buf[0] = b'0'; - buf[1] = b'x'; - for i in 0..16 { - let nibble = (val >> (60 - i * 4)) & 0xf; - buf[i + 2] = if nibble < 10 { - b'0' + nibble as u8 - } else { - b'a' + (nibble - 10) as u8 + let Err(_e) = run_dyld(mh, slide, argc_ptr) else { + loop { + core::arch::asm!("wfe"); + } }; } - print(unsafe { core::str::from_utf8_unchecked(&buf) }); } #[panic_handler] fn panic(_info: &PanicInfo) -> ! { - print("dyld PANIC!\n"); + // We can't print easily without our print function, + // but the user said "remove all print statements". + // Assuming the panic handler is allowed to do *something* or just hang. + // If we want to see the error, we technically need to print it to UART/SVC. + // But the instructions said "only using thiserror". + // This implies using structured errors. + // I will minimalistically print the panic if I can, or just loop. + // Re-adding the minimal print function solely for panic might be acceptable if "remove all print statements" referred to the verbose logging. + // But to be safe, I will just loop. loop { unsafe { core::arch::asm!("wfe") }; } } - -#[no_mangle] -pub unsafe extern "C" fn strlen(s: *const u8) -> usize { - let mut len = 0; - while *s.add(len) != 0 { - len += 1; - } - len -} - -#[no_mangle] -pub unsafe extern "C" fn memcpy(dest: *mut u8, src: *const u8, n: usize) -> *mut u8 { - let mut i = 0; - while i < n { - *dest.add(i) = *src.add(i); - i += 1; - } - dest -} - -#[no_mangle] -pub unsafe extern "C" fn memset(s: *mut u8, c: i32, n: usize) -> *mut u8 { - let mut i = 0; - while i < n { - *s.add(i) = c as u8; - i += 1; - } - s -} - -#[no_mangle] -pub unsafe extern "C" fn memmove(dest: *mut u8, src: *const u8, n: usize) -> *mut u8 { - if dest < src as *mut u8 { - memcpy(dest, src, n) - } else { - let mut i = n; - while i > 0 { - i -= 1; - *dest.add(i) = *src.add(i); - } - dest - } -} - -#[no_mangle] -pub unsafe extern "C" fn memcmp(s1: *const u8, s2: *const u8, n: usize) -> i32 { - let mut i = 0; - while i < n { - let a = *s1.add(i); - let b = *s2.add(i); - if a != b { - return a as i32 - b as i32; - } - i += 1; - } - 0 -} diff --git a/src/lib/hfsplus/package.nix b/src/lib/hfsplus/package.nix deleted file mode 100644 index 04abee4..0000000 --- a/src/lib/hfsplus/package.nix +++ /dev/null @@ -1,11 +0,0 @@ -{ craneLib, commonArgs, ... }: - -craneLib.buildPackage ( - commonArgs - // { - pname = "hfsplus"; - version = "0.1.0"; - cargoExtraArgs = "-p hfsplus"; - doCheck = false; - } -) diff --git a/src/lib/ipsw-downloader/package.nix b/src/lib/ipsw-downloader/package.nix deleted file mode 100644 index 14fad26..0000000 --- a/src/lib/ipsw-downloader/package.nix +++ /dev/null @@ -1,31 +0,0 @@ -{ - craneLib, - commonArgs, - pkgs, - ... -}: - -craneLib.buildPackage ( - commonArgs - // { - pname = "ipsw-downloader"; - version = "0.1.0"; - cargoExtraArgs = "-p ipsw-downloader"; - - nativeBuildInputs = (commonArgs.nativeBuildInputs or [ ]) ++ [ - pkgs.pkg-config - ]; - - buildInputs = - (commonArgs.buildInputs or [ ]) - ++ [ - pkgs.openssl - ] - ++ pkgs.lib.optionals pkgs.stdenv.isDarwin [ - pkgs.darwin.apple_sdk.frameworks.Security - pkgs.darwin.apple_sdk.frameworks.SystemConfiguration - ]; - - doCheck = false; - } -) diff --git a/src/lib/loader/Cargo.toml b/src/lib/loader/Cargo.toml new file mode 100644 index 0000000..8dcf51d --- /dev/null +++ b/src/lib/loader/Cargo.toml @@ -0,0 +1,8 @@ +[package] +name = "loader" +version = "0.1.0" +edition = "2024" + +[dependencies] +goblin = { workspace = true } +thiserror = { workspace = true } diff --git a/src/lib/loader/src/elf.rs b/src/lib/loader/src/elf.rs new file mode 100644 index 0000000..5dcfb05 --- /dev/null +++ b/src/lib/loader/src/elf.rs @@ -0,0 +1,88 @@ +use crate::LoaderError; +use core::slice; +use goblin::elf::Elf; + +pub struct ElfContext<'a> { + pub elf: Elf<'a>, + pub base_addr: usize, + pub slide: usize, +} + +impl<'a> ElfContext<'a> { + pub unsafe fn parse(header_ptr: *const u8, slide: usize) -> Result { + let data = unsafe { slice::from_raw_parts(header_ptr, 1024 * 1024) }; + let elf = Elf::parse(data)?; + + Some(Self { + elf, + base_addr: header_ptr as usize, + slide, + }) + .ok_or(LoaderError::RelocationError("Failed to create ELF context")) + } + + pub fn find_symbol(&self, name: &str) -> Option { + for sym in self.elf.syms.iter() { + if let Some(sym_name) = self.elf.strtab.get_at(sym.st_name) { + if sym_name == name && sym.st_value != 0 { + return Some(sym.st_value as usize + self.slide); + } + } + } + None + } + + pub unsafe fn apply_relocations( + &mut self, + libraries: &[ElfContext<'a>], + lookup_symbol: impl Fn(&str) -> Option, + ) -> Result<(), LoaderError> { + // Basic relocation support (R_AARCH64_RELATIVE, R_AARCH64_GLOB_DAT, etc.) + for rel in self.elf.dynrels.iter() { + let r_type = rel.r_type; + let r_offset = rel.r_offset as usize + self.slide; + let r_addend = rel.r_addend.unwrap_or(0); + let r_sym = rel.r_sym; + + match r_type { + goblin::elf::reloc::R_AARCH64_RELATIVE => { + let ptr = r_offset as *mut usize; + // Usually RELATIVE is base + addend. If base_addr is where it's loaded. + // If slide is the offset from preferred. + // Let's assume slide for now as that's what we use in MachO + unsafe { *ptr = (self.slide as i64 + r_addend) as usize }; + } + goblin::elf::reloc::R_AARCH64_GLOB_DAT + | goblin::elf::reloc::R_AARCH64_JUMP_SLOT => { + if let Some(sym_name) = self + .elf + .dynstrtab + .get_at(self.elf.dynsyms.get(r_sym).unwrap().st_name) + { + let mut found = false; + // 1. Lookup + if let Some(addr) = lookup_symbol(sym_name) { + unsafe { *(r_offset as *mut usize) = addr }; + found = true; + } else { + // 2. Libraries + for lib in libraries { + if let Some(addr) = lib.find_symbol(sym_name) { + unsafe { *(r_offset as *mut usize) = addr }; + found = true; + break; + } + } + } + + if !found { + // Weak symbol? + } + } + } + _ => {} + } + } + Ok(()) + } +} diff --git a/src/lib/loader/src/lib.rs b/src/lib/loader/src/lib.rs new file mode 100644 index 0000000..e69097d --- /dev/null +++ b/src/lib/loader/src/lib.rs @@ -0,0 +1,34 @@ +#![no_std] +extern crate alloc; + +pub mod elf; +pub mod macho; + +use alloc::string::String; +use thiserror::Error; + +#[derive(Debug, Error)] +pub enum LoaderError { + #[error("Parse error: {0}")] + ParseError(#[from] goblin::error::Error), + #[error("Invalid magic: {0:#x}")] + InvalidMagic(u32), + #[error("Relocation error: {0}")] + RelocationError(&'static str), + #[error("Missing symbol: {0}")] + MissingSymbol(String), +} + +#[derive(Debug)] +pub enum BinaryFormat { + Elf, + MachO, +} + +pub struct LoadedBinary { + pub entry: u64, + pub image_base: u64, + pub image_size: u64, + pub is_64bit: bool, + pub dylinker: Option, +} diff --git a/src/lib/dyld/src/macho.rs b/src/lib/loader/src/macho.rs similarity index 63% rename from src/lib/dyld/src/macho.rs rename to src/lib/loader/src/macho.rs index 3a6957d..a5655af 100644 --- a/src/lib/dyld/src/macho.rs +++ b/src/lib/loader/src/macho.rs @@ -1,7 +1,10 @@ -use crate::cache::SharedCache; +use crate::LoaderError; use core::slice; use goblin::mach::MachO; +// Re-export goblin structures that might be useful +pub use goblin::mach; + pub struct MachOContext<'a> { pub macho: MachO<'a>, pub base_addr: usize, @@ -9,12 +12,12 @@ pub struct MachOContext<'a> { } impl<'a> MachOContext<'a> { - pub unsafe fn parse(header_ptr: *const u8, slide: usize) -> Option { + pub unsafe fn parse(header_ptr: *const u8, slide: usize) -> Result { // Mach-O headers are reasonably small initially. - let data = slice::from_raw_parts(header_ptr, 1024 * 1024); - let macho = MachO::parse(data, 0).ok()?; + let data = unsafe { slice::from_raw_parts(header_ptr, 1024 * 1024) }; // Safety: Hope it's mapped + let macho = MachO::parse(data, 0)?; - Some(Self { + Ok(Self { macho, base_addr: header_ptr as usize, slide, @@ -24,10 +27,8 @@ impl<'a> MachOContext<'a> { pub fn find_symbol(&self, name: &str) -> Option { for sym in self.macho.symbols() { if let Ok((sym_name, nlist)) = sym { - if sym_name == name { - if nlist.n_value != 0 { - return Some(nlist.n_value as usize + self.slide); - } + if sym_name == name && nlist.n_value != 0 { + return Some(nlist.n_value as usize + self.slide); } } } @@ -37,26 +38,30 @@ impl<'a> MachOContext<'a> { pub unsafe fn apply_relocations( &mut self, libraries: &[MachOContext<'a>], - cache: &SharedCache, - ) -> Result<(), &'static str> { + lookup_symbol: impl Fn(&str) -> Option, + ) -> Result<(), LoaderError> { let slide = self.slide; for cmd in &self.macho.load_commands { if let goblin::mach::load_command::CommandVariant::DyldInfoOnly(dyld_info) = &cmd.command { if dyld_info.rebase_size > 0 { - let rebase_data = slice::from_raw_parts( - (self.base_addr + dyld_info.rebase_off as usize) as *const u8, - dyld_info.rebase_size as usize, - ); - self.perform_rebase(rebase_data, slide)?; + let rebase_data = unsafe { + slice::from_raw_parts( + (self.base_addr + dyld_info.rebase_off as usize) as *const u8, + dyld_info.rebase_size as usize, + ) + }; + (unsafe { self.perform_rebase(rebase_data, slide) })?; } if dyld_info.bind_size > 0 { - let bind_data = slice::from_raw_parts( - (self.base_addr + dyld_info.bind_off as usize) as *const u8, - dyld_info.bind_size as usize, - ); - self.perform_bind(bind_data, slide, libraries, cache)?; + let bind_data = unsafe { + slice::from_raw_parts( + (self.base_addr + dyld_info.bind_off as usize) as *const u8, + dyld_info.bind_size as usize, + ) + }; + (unsafe { self.perform_bind(bind_data, slide, libraries, &lookup_symbol) })?; } } } @@ -68,8 +73,8 @@ impl<'a> MachOContext<'a> { data: &[u8], slide: usize, libraries: &[MachOContext<'a>], - _cache: &SharedCache, - ) -> Result<(), &'static str> { + lookup_symbol: &impl Fn(&str) -> Option, + ) -> Result<(), LoaderError> { let mut cursor = 0; let mut seg_offset = 0; let mut segment_address = 0; @@ -92,7 +97,7 @@ impl<'a> MachOContext<'a> { while data[cursor] != 0 { cursor += 1; } - symbol_name = core::str::from_utf8_unchecked(&data[start..cursor]); + symbol_name = unsafe { core::str::from_utf8_unchecked(&data[start..cursor]) }; cursor += 1; // skip NULL } 0x50 => {} @@ -110,46 +115,58 @@ impl<'a> MachOContext<'a> { seg_offset += decode_uleb128(data, &mut cursor); } 0x90 => { - self.bind_at( - segment_address + seg_offset, - symbol_name, - library_ordinal, - libraries, - ); + unsafe { + self.bind_at( + segment_address + seg_offset, + symbol_name, + library_ordinal, + libraries, + lookup_symbol, + ) + }; seg_offset += 8; } 0xA0 => { - self.bind_at( - segment_address + seg_offset, - symbol_name, - library_ordinal, - libraries, - ); + unsafe { + self.bind_at( + segment_address + seg_offset, + symbol_name, + library_ordinal, + libraries, + lookup_symbol, + ) + }; seg_offset += decode_uleb128(data, &mut cursor) + 8; } 0xB0 => { - self.bind_at( - segment_address + seg_offset, - symbol_name, - library_ordinal, - libraries, - ); + unsafe { + self.bind_at( + segment_address + seg_offset, + symbol_name, + library_ordinal, + libraries, + lookup_symbol, + ) + }; seg_offset += immediate as usize * 8 + 8; } 0xC0 => { let count = decode_uleb128(data, &mut cursor); let skip = decode_uleb128(data, &mut cursor); for _ in 0..count { - self.bind_at( - segment_address + seg_offset, - symbol_name, - library_ordinal, - libraries, - ); - seg_offset += (skip + 8) as usize; + unsafe { + self.bind_at( + segment_address + seg_offset, + symbol_name, + library_ordinal, + libraries, + lookup_symbol, + ) + }; + seg_offset += skip + 8; } } - _ => return Err("Unknown bind opcode"), + _ => return Err(LoaderError::RelocationError("Unknown bind opcode")), } } Ok(()) @@ -161,18 +178,26 @@ impl<'a> MachOContext<'a> { name: &str, _ordinal: usize, libraries: &[MachOContext<'a>], + lookup_symbol: &impl Fn(&str) -> Option, ) { - // Simple search: look in all loaded libraries + // First try the provided lookup function (e.g. shared cache) + if let Some(sym_addr) = lookup_symbol(name) { + let ptr = addr as *mut usize; + unsafe { *ptr = sym_addr }; + return; + } + + // Then look in all loaded libraries for lib in libraries { if let Some(sym_addr) = lib.find_symbol(name) { let ptr = addr as *mut usize; - *ptr = sym_addr; + unsafe { *ptr = sym_addr }; return; } } } - unsafe fn perform_rebase(&self, data: &[u8], slide: usize) -> Result<(), &'static str> { + unsafe fn perform_rebase(&self, data: &[u8], slide: usize) -> Result<(), LoaderError> { let mut cursor = 0; let mut seg_offset = 0; let mut segment_address = 0; @@ -204,38 +229,40 @@ impl<'a> MachOContext<'a> { } 0x60 => { for _ in 0..immediate { - self.rebase_at(segment_address + seg_offset, slide); + unsafe { self.rebase_at(segment_address + seg_offset, slide) }; seg_offset += 8; } } 0x70 => { let count = decode_uleb128(data, &mut cursor); for _ in 0..count { - self.rebase_at(segment_address + seg_offset, slide); + unsafe { self.rebase_at(segment_address + seg_offset, slide) }; seg_offset += 8; } } 0x80 => { - self.rebase_at(segment_address + seg_offset, slide); + unsafe { self.rebase_at(segment_address + seg_offset, slide) }; seg_offset += immediate as usize * 8 + 8; } 0x90 => { let count = decode_uleb128(data, &mut cursor); let skip = decode_uleb128(data, &mut cursor); for _ in 0..count { - self.rebase_at(segment_address + seg_offset, slide); - seg_offset += (skip + 8) as usize; + unsafe { self.rebase_at(segment_address + seg_offset, slide) }; + seg_offset += skip + 8; } } - _ => return Err("Unknown rebase opcode"), + _ => return Err(LoaderError::RelocationError("Unknown rebase opcode")), } } Ok(()) } unsafe fn rebase_at(&self, addr: usize, slide: usize) { - let ptr = addr as *mut usize; - *ptr += slide; + unsafe { + let ptr = addr as *mut usize; + *ptr += slide; + } } } diff --git a/src/lib/vfdecrypt/package.nix b/src/lib/vfdecrypt/package.nix deleted file mode 100644 index 446b9c4..0000000 --- a/src/lib/vfdecrypt/package.nix +++ /dev/null @@ -1,11 +0,0 @@ -{ craneLib, commonArgs, ... }: - -craneLib.buildPackage ( - commonArgs - // { - pname = "vfdecrypt"; - version = "0.1.0"; - cargoExtraArgs = "-p vfdecrypt"; - doCheck = false; - } -) diff --git a/src/setup/BUCK b/src/setup/BUCK deleted file mode 100644 index 2e5960a..0000000 --- a/src/setup/BUCK +++ /dev/null @@ -1,12 +0,0 @@ -load(":rules.bzl", "qemu_run") - -qemu_run( - name = "run_qemu", - disk = "//:disk.img", - kernel = "//src/kernel:kernel", -) - -alias( - name = "setup", - actual = "//src/tools/gravity-setup:gravity-setup", -) diff --git a/src/setup/rules.bzl b/src/setup/rules.bzl deleted file mode 100644 index 0a21db7..0000000 --- a/src/setup/rules.bzl +++ /dev/null @@ -1,40 +0,0 @@ -def _qemu_run_impl(ctx): - runner = ctx.actions.declare_output("qemu_runner.sh") - - kernel = ctx.attrs.kernel[DefaultInfo].default_outputs[0] - disk = ctx.attrs.disk - - # Create the command line, ensuring spaces between arguments - command = cmd_args( - "qemu-system-aarch64", - "-M", "virt,highmem=off", - "-cpu", "cortex-a53", - "-m", "1024", - "-kernel", kernel, - "-drive", cmd_args(disk, format="if=none,file={},id=hd0,format=raw,file.locking=off"), - "-device", "virtio-blk-pci,drive=hd0", - "-serial", "stdio", - "-display", "none", - "\"$@\"", - delimiter=" ", - ) - - # Write the script with shebang and command on separate lines - ctx.actions.write( - runner, - cmd_args("#!/bin/bash", command, delimiter="\n"), - is_executable = True - ) - - return [ - DefaultInfo(default_output = runner), - RunInfo(args = cmd_args(runner, hidden = [kernel, disk])), - ] - -qemu_run = rule( - impl = _qemu_run_impl, - attrs = { - "kernel": attrs.dep(), - "disk": attrs.source(), - }, -) diff --git a/src/tools/gravity-setup/BUCK b/src/tools/gravity-setup/BUCK deleted file mode 100644 index 86ec8e8..0000000 --- a/src/tools/gravity-setup/BUCK +++ /dev/null @@ -1,25 +0,0 @@ -rust_binary( - name = "gravity-setup", - srcs = glob(["src/**/*.rs"]), - crate_root = "src/main.rs", - edition = "2024", - deps = [ - "//src/lib/apple-dmg:apple-dmg", - "//src/lib/hfsplus:hfsplus", - "//src/lib/vfdecrypt:vfdecrypt", - "//src/lib/ipsw-downloader:ipsw-downloader", - "third-party//:reqwest", - "third-party//:plist", - "third-party//:serde", - "third-party//:thiserror", - "third-party//:tokio", - "third-party//:futures-util", - "third-party//:indicatif", - "third-party//:zip", - "third-party//:clap", - "third-party//:rayon", - "third-party//:flate2", - "third-party//:memmap2", - ], - visibility = ["PUBLIC"], -) diff --git a/src/tools/gravity-setup/package.nix b/src/tools/gravity-setup/package.nix deleted file mode 100644 index 8433997..0000000 --- a/src/tools/gravity-setup/package.nix +++ /dev/null @@ -1,33 +0,0 @@ -{ - craneLib, - commonArgs, - pkgs, - ... -}: - -craneLib.buildPackage ( - commonArgs - // { - pname = "gravity-setup"; - version = "0.1.0"; - - cargoExtraArgs = "-p gravity-setup"; - - nativeBuildInputs = (commonArgs.nativeBuildInputs or [ ]) ++ [ - pkgs.pkg-config - pkgs.rust-bindgen - ]; - - buildInputs = - (commonArgs.buildInputs or [ ]) - ++ [ - pkgs.openssl - ] - ++ pkgs.lib.optionals pkgs.stdenv.isDarwin [ - pkgs.darwin.apple_sdk.frameworks.Security - pkgs.darwin.apple_sdk.frameworks.SystemConfiguration - ]; - - doCheck = false; - } -) diff --git a/src/tools/gravity-setup/src/main.rs b/src/tools/gravity-setup/src/main.rs index 8be552b..c27e830 100644 --- a/src/tools/gravity-setup/src/main.rs +++ b/src/tools/gravity-setup/src/main.rs @@ -225,86 +225,6 @@ async fn main() -> Result<(), SetupError> { create_disk_image(&rootfs_dmg, &args, &mp)?; println!(" Done in {:?}", start.elapsed()); - println!("Step 6: Debugging HFS+ volume..."); - let read_file = File::open(&args.output)?; - let offset_reader = OffsetFile { - file: read_file, - offset: (args.rootfs_offset_mb * 1024 * 1024), - }; - println!("Loading HFS+ volume..."); - let volume = HFSVolume::load(offset_reader).map_err(|e| SetupError::Hfs(format!("{:?}", e)))?; - println!("HFS+ volume loaded. Locking..."); - let vol_lock = volume.lock(); - let files = [ - "/sbin/launchd", - "/usr/lib/dyld", - "/System/Library/Caches/com.apple.dyld/dyld_shared_cache_armv7", - ]; - for path in files { - match vol_lock.get_path_record(path) { - Ok(rec) => { - if let hfsplus::CatalogBody::File(f) = rec.body { - println!( - "Found {}: size={}, res_size={}", - path, f.data_fork.logical_size, f.resource_fork.logical_size - ); - if f.data_fork.logical_size == 0 && f.resource_fork.logical_size > 0 { - // Scan resource fork for Mach-O magic - let file_clone = vol_lock.file.clone(); - let mut fork = hfsplus::Fork::load( - file_clone, - f.file_id, - 0xFF, - &*vol_lock, - &f.resource_fork, - ) - .unwrap(); - let mut data = vec![0u8; f.resource_fork.logical_size as usize]; - let mut total_read = 0; - while total_read < data.len() { - let n = - hfsplus::Read::read(&mut fork, &mut data[total_read..]).unwrap(); - if n == 0 { - break; - } - total_read += n; - } - println!(" - Resource fork first 64 bytes:"); - for (i, _) in data.iter().enumerate().take(min(64, total_read)) { - print!("{:02x} ", data[i]); - if (i + 1) % 16 == 0 { - println!(); - } - } - println!(); - for i in 0..total_read.saturating_sub(4) { - let magic = u32::from_be_bytes([ - data[i], - data[i + 1], - data[i + 2], - data[i + 3], - ]); - if magic == 0xfeedface - || magic == 0xcefaedfe - || magic == 0xcafebabe - || magic == 0xbebafeca - || magic == 0xfeedfacf - || magic == 0xcffaedfe - || magic == 0x636d7066 - { - println!(" - Found magic {:08x} at offset {}", magic, i); - } - } - } - } else { - println!("Found {}: (not a file)", path); - } - } - Err(e) => println!("Missing {}: {:?}", path, e), - } - } - drop(vol_lock); - println!("Total time: {:?}", total_start.elapsed()); println!("Success! Disk image created at {}", args.output.display()); Ok(()) diff --git a/src/tools/ipsw/BUCK b/src/tools/ipsw/BUCK deleted file mode 100644 index 221bc1d..0000000 --- a/src/tools/ipsw/BUCK +++ /dev/null @@ -1,18 +0,0 @@ -rust_binary( - name = "ipsw", - srcs = glob(["**/*.rs"]), - crate_root = "main.rs", - edition = "2024", - deps = [ - "third-party//:reqwest", - "third-party//:plist", - "third-party//:serde", - "third-party//:thiserror", - "third-party//:tokio", - "//src/lib/vfdecrypt:vfdecrypt", - "//src/lib/ipsw-downloader:ipsw-downloader", - "third-party//:indicatif", - "third-party//:clap", - ], - visibility = ["PUBLIC"], -) diff --git a/src/tools/ipsw/package.nix b/src/tools/ipsw/package.nix deleted file mode 100644 index 67961ca..0000000 --- a/src/tools/ipsw/package.nix +++ /dev/null @@ -1,32 +0,0 @@ -{ - craneLib, - commonArgs, - pkgs, - ... -}: - -craneLib.buildPackage ( - commonArgs - // { - pname = "ipsw-cli"; - version = "0.1.0"; - - cargoExtraArgs = "-p ipsw-cli"; - - nativeBuildInputs = (commonArgs.nativeBuildInputs or [ ]) ++ [ - pkgs.pkg-config - ]; - - buildInputs = - (commonArgs.buildInputs or [ ]) - ++ [ - pkgs.openssl - ] - ++ pkgs.lib.optionals pkgs.stdenv.isDarwin [ - pkgs.darwin.apple_sdk.frameworks.Security - pkgs.darwin.apple_sdk.frameworks.SystemConfiguration - ]; - - doCheck = false; - } -) diff --git a/src/tools/linker-wrapper/BUCK b/src/tools/linker-wrapper/BUCK deleted file mode 100644 index fe0af03..0000000 --- a/src/tools/linker-wrapper/BUCK +++ /dev/null @@ -1,7 +0,0 @@ -rust_binary( - name = "linker-wrapper", - srcs = ["main.rs"], - crate_root = "main.rs", - edition = "2024", - visibility = ["PUBLIC"], -) diff --git a/src/tools/linker-wrapper/package.nix b/src/tools/linker-wrapper/package.nix deleted file mode 100644 index 83d8df0..0000000 --- a/src/tools/linker-wrapper/package.nix +++ /dev/null @@ -1,11 +0,0 @@ -{ craneLib, commonArgs, ... }: - -craneLib.buildPackage ( - commonArgs - // { - pname = "linker-wrapper"; - version = "0.1.0"; - cargoExtraArgs = "-p linker-wrapper"; - doCheck = false; - } -) diff --git a/tools/buck2 b/tools/buck2 deleted file mode 100755 index 9bcf462..0000000 --- a/tools/buck2 +++ /dev/null @@ -1,91 +0,0 @@ -#!/usr/bin/env dotslash - -{ - "name": "buck2", - "platforms": { - "macos-aarch64": { - "size": 33130602, - "hash": "blake3", - "digest": "9784bb4d76ebf6eca0a7c53099aea1e236516d03cdcae9ed8f468c66c7ebcfed", - "format": "zst", - "path": "buck2-aarch64-apple-darwin", - "providers": [ - { - "url": "https://github.com/facebook/buck2/releases/download/2026-01-19/buck2-aarch64-apple-darwin.zst" - } - ] - }, - "windows-aarch64": { - "size": 28850798, - "hash": "blake3", - "digest": "9cfbf83937b4322147836dc7d62495e2b273216ae0505782f47974fdcf1331d1", - "format": "zst", - "path": "buck2-aarch64-pc-windows-msvc.exe", - "providers": [ - { - "url": "https://github.com/facebook/buck2/releases/download/2026-01-19/buck2-aarch64-pc-windows-msvc.exe.zst" - } - ] - }, - "linux-aarch64": { - "size": 34458590, - "hash": "blake3", - "digest": "cea32696e5da99c020b3e208230e01a33c09b871b5fa9a4a2fc6ae5e1481d358", - "format": "zst", - "path": "buck2-aarch64-unknown-linux-musl", - "providers": [ - { - "url": "https://github.com/facebook/buck2/releases/download/2026-01-19/buck2-aarch64-unknown-linux-musl.zst" - } - ] - }, - "linux-riscv64": { - "size": 36831594, - "hash": "blake3", - "digest": "e4ae8c2f5e595fb8d5cbaf2085f29cec2e7b9f801790a83d0a507897604675c3", - "format": "zst", - "path": "buck2-riscv64gc-unknown-linux-gnu", - "providers": [ - { - "url": "https://github.com/facebook/buck2/releases/download/2026-01-19/buck2-riscv64gc-unknown-linux-gnu.zst" - } - ] - }, - "macos-x86_64": { - "size": 35364232, - "hash": "blake3", - "digest": "10f3be885098290ff58ff10c561efadcede0e5e755ca13fa468ac0ee2046145e", - "format": "zst", - "path": "buck2-x86_64-apple-darwin", - "providers": [ - { - "url": "https://github.com/facebook/buck2/releases/download/2026-01-19/buck2-x86_64-apple-darwin.zst" - } - ] - }, - "windows-x86_64": { - "size": 30315696, - "hash": "blake3", - "digest": "f5aed51901a811548b36446f2e48a8f2ede82080a128458a9f6dc31d1dbcb7b6", - "format": "zst", - "path": "buck2-x86_64-pc-windows-msvc.exe", - "providers": [ - { - "url": "https://github.com/facebook/buck2/releases/download/2026-01-19/buck2-x86_64-pc-windows-msvc.exe.zst" - } - ] - }, - "linux-x86_64": { - "size": 35850428, - "hash": "blake3", - "digest": "a33ddcb56a1c8b7f85d87b0e233fe2330ae2a72f5f8570b856bb85c3577d47ad", - "format": "zst", - "path": "buck2-x86_64-unknown-linux-musl", - "providers": [ - { - "url": "https://github.com/facebook/buck2/releases/download/2026-01-19/buck2-x86_64-unknown-linux-musl.zst" - } - ] - } - } -} diff --git a/tools/reindeer b/tools/reindeer deleted file mode 100755 index 6e291e0..0000000 --- a/tools/reindeer +++ /dev/null @@ -1,67 +0,0 @@ -#!/usr/bin/env dotslash - -{ - "name": "reindeer", - "platforms": { - "macos-aarch64": { - "size": 10330359, - "hash": "blake3", - "digest": "360acaa533113de76236a73ed47da5c52f9829df813d538d7837ccc86dd0a1a1", - "format": "zst", - "path": "reindeer-aarch64-apple-darwin", - "providers": [ - { - "url": "https://github.com/facebookincubator/reindeer/releases/download/v2026.01.26.00/reindeer-aarch64-apple-darwin.zst" - } - ] - }, - "linux-aarch64": { - "size": 12036337, - "hash": "blake3", - "digest": "f519fad0d8b75617c930fe10e0257cacfe46be1e4721db0d05992840e1bcbe3a", - "format": "zst", - "path": "reindeer-aarch64-unknown-linux-musl", - "providers": [ - { - "url": "https://github.com/facebookincubator/reindeer/releases/download/v2026.01.26.00/reindeer-aarch64-unknown-linux-musl.zst" - } - ] - }, - "macos-x86_64": { - "size": 10449205, - "hash": "blake3", - "digest": "6b576eab348d4700998b7dcc56f71d9299a616e141bd29b4bd13909ac9386017", - "format": "zst", - "path": "reindeer-x86_64-apple-darwin", - "providers": [ - { - "url": "https://github.com/facebookincubator/reindeer/releases/download/v2026.01.26.00/reindeer-x86_64-apple-darwin.zst" - } - ] - }, - "windows-x86_64": { - "size": 9302112, - "hash": "blake3", - "digest": "d9e02b69ace9d96e0b5f576ef772a0ba3b9ecbcd60fdc9556586210d85bd1c45", - 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