Merge pull request #21037 from alexrp/target-dyld
`std.Target`: Rewrite DynamicLinker.standard() and fill in some missing details.
This commit is contained in:
Alex Rønne Petersen
@@ -1768,156 +1768,332 @@ pub const DynamicLinker = struct {
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return std.mem.eql(u8, lhs.buffer[0..lhs.len], rhs.buffer[0..rhs.len]);
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}
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pub fn standard(cpu: Cpu, os_tag: Os.Tag, abi: Abi) DynamicLinker {
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return if (abi.isAndroid()) initFmt("/system/bin/linker{s}", .{
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if (ptrBitWidth_cpu_abi(cpu, abi) == 64) "64" else "",
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}) catch unreachable else if (abi.isMusl()) return initFmt("/lib/ld-musl-{s}{s}.so.1", .{
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@tagName(switch (cpu.arch) {
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.thumb => .arm,
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.thumbeb => .armeb,
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else => cpu.arch,
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}),
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if (cpu.arch.isArmOrThumb() and abi.floatAbi() == .hard) "hf" else "",
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}) catch unreachable else switch (os_tag) {
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.freebsd => init("/libexec/ld-elf.so.1"),
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.netbsd => init("/libexec/ld.elf_so"),
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.openbsd => init("/usr/libexec/ld.so"),
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.dragonfly => init("/libexec/ld-elf.so.2"),
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.solaris, .illumos => init("/lib/64/ld.so.1"),
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.linux => switch (cpu.arch) {
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.x86,
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.sparc,
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=> init("/lib/ld-linux.so.2"),
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pub fn standard(cpu: Cpu, os: Os, abi: Abi) DynamicLinker {
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return switch (os.tag) {
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.fuchsia => init("ld.so.1"), // Fuchsia is unusual in that `DT_INTERP` is just a basename.
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.aarch64 => init("/lib/ld-linux-aarch64.so.1"),
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.aarch64_be => init("/lib/ld-linux-aarch64_be.so.1"),
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.haiku => init("/system/runtime_loader"),
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.hurd => switch (cpu.arch) {
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.aarch64,
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.aarch64_be,
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=> |arch| initFmt("/lib/ld-{s}{s}.so.1", .{
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@tagName(arch),
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if (abi == .gnuilp32) "_ilp32" else "",
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}),
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.x86 => init("/lib/ld.so.1"),
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.x86_64 => initFmt("/lib/ld-{s}.so.1", .{if (abi == .gnux32) "x32" else "x86-64"}),
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// These are unsupported by Hurd/glibc.
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.amdgcn,
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.arc,
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.arm,
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.armeb,
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.thumb,
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.thumbeb,
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=> initFmt("/lib/ld-linux{s}.so.3", .{switch (abi.floatAbi()) {
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.hard => "-armhf",
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else => "",
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}}) catch unreachable,
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.loongarch64 => init("/lib64/ld-linux-loongarch-lp64d.so.1"),
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.avr,
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.bpfel,
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.bpfeb,
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.csky,
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.hexagon,
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.kalimba,
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.lanai,
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.loongarch32,
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.loongarch64,
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.m68k,
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.mips,
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.mipsel,
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.mips64,
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.mips64el,
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=> initFmt("/lib{s}/{s}", .{
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switch (abi) {
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.gnuabin32, .gnux32 => "32",
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.gnuabi64 => "64",
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else => "",
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},
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if (mips.featureSetHas(cpu.features, .nan2008))
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"ld-linux-mipsn8.so.1"
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else
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"ld.so.1",
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}) catch unreachable,
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.powerpc, .powerpcle => init("/lib/ld.so.1"),
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.powerpc64, .powerpc64le => init("/lib64/ld64.so.2"),
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.s390x => init("/lib64/ld64.so.1"),
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.sparc64 => init("/lib64/ld-linux.so.2"),
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.x86_64 => init(switch (abi) {
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.gnux32 => "/libx32/ld-linux-x32.so.2",
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else => "/lib64/ld-linux-x86-64.so.2",
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}),
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.riscv32 => init("/lib/ld-linux-riscv32-ilp32d.so.1"),
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.riscv64 => init("/lib/ld-linux-riscv64-lp64d.so.1"),
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// Architectures in this list have been verified as not having a standard
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// dynamic linker path.
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.wasm32,
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.wasm64,
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.bpfel,
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.bpfeb,
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.msp430,
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.nvptx,
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.nvptx64,
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.spu_2,
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.avr,
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.powerpc,
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.powerpcle,
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.powerpc64,
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.powerpc64le,
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.propeller1,
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.propeller2,
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.riscv32,
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.riscv64,
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.s390x,
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.sparc,
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.sparc64,
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.spirv,
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.spirv32,
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.spirv64,
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.propeller1,
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.propeller2,
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=> none,
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// TODO go over each item in this list and either move it to the above list, or
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// implement the standard dynamic linker path code for it.
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.arc,
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.csky,
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.hexagon,
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.m68k,
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.msp430,
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.amdgcn,
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.xcore,
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.kalimba,
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.lanai,
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.spu_2,
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.ve,
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.loongarch32,
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.wasm32,
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.wasm64,
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.xcore,
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.xtensa,
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=> none,
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},
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.linux => if (abi.isAndroid())
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initFmt("/system/bin/linker{s}", .{if (ptrBitWidth_cpu_abi(cpu, abi) == 64) "64" else ""})
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else if (abi.isMusl())
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switch (cpu.arch) {
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.arm,
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.armeb,
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.thumb,
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.thumbeb,
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.aarch64,
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.aarch64_be,
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.loongarch64,
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.m68k,
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.powerpc,
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.powerpc64,
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.powerpc64le,
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.riscv32,
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.riscv64,
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.s390x,
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.x86,
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.x86_64,
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=> |arch| initFmt("/lib/ld-musl-{s}{s}.so.1", .{
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switch (arch) {
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.thumb => "arm",
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.thumbeb => "armeb",
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.x86 => "i386",
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.x86_64 => if (abi == .muslx32) "x32" else "x86_64",
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else => @tagName(arch),
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},
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switch (arch) {
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.arm, .armeb, .thumb, .thumbeb => if (abi.floatAbi() == .hard) "hf" else "",
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.aarch64, .aarch64_be => if (abi == .gnuilp32) "_ilp32" else "",
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.riscv32, .riscv64 => if (std.Target.riscv.featureSetHas(cpu.features, .d))
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""
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else if (std.Target.riscv.featureSetHas(cpu.features, .f))
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"-sp"
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else
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"-sf",
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else => if (abi.floatAbi() == .soft) "-sf" else "",
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},
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}),
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// The naming scheme for MIPS is a bit irregular.
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.mips,
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.mipsel,
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.mips64,
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.mips64el,
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=> |arch| initFmt("/lib/ld-musl-mips{s}{s}{s}{s}.so.1", .{
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if (arch.isMIPS64()) "64" else "", // TODO: `n32` ABI support in LLVM 20.
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if (mips.featureSetHas(cpu.features, if (arch.isMIPS64()) .mips64r6 else .mips32r6)) "r6" else "",
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if (arch.endian() == .little) "el" else "",
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if (abi.floatAbi() == .soft) "-sf" else "",
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}),
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// These are unsupported by musl.
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.amdgcn,
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.arc,
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.avr,
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.csky,
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.bpfel,
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.bpfeb,
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.hexagon,
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.kalimba,
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.lanai,
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.loongarch32,
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.msp430,
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.nvptx,
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.nvptx64,
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.powerpcle,
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.propeller1,
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.propeller2,
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.sparc,
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.sparc64,
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.spirv,
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.spirv32,
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.spirv64,
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.spu_2,
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.ve,
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.wasm32,
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.wasm64,
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.xcore,
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.xtensa,
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=> none,
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}
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else if (abi.isGnu())
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switch (cpu.arch) {
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// TODO: `eb` architecture support.
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// TODO: `700` ABI support.
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.arc => init("/lib/ld-linux-arc.so.2"),
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// TODO: OABI support (`/lib/ld-linux.so.2`).
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.arm,
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.armeb,
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.thumb,
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.thumbeb,
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=> initFmt("/lib/ld-linux{s}.so.3", .{if (abi.floatAbi() == .hard) "-armhf" else ""}),
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.aarch64,
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.aarch64_be,
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=> |arch| initFmt("/lib/ld-linux-{s}{s}.so.1", .{
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@tagName(arch),
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if (abi == .gnuilp32) "_ilp32" else "",
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}),
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// TODO: `-be` architecture support.
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.csky => initFmt("/lib/ld-linux-cskyv2{s}.so.1", .{if (abi.floatAbi() == .hard) "-hf" else ""}),
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.loongarch64 => initFmt("/lib64/ld-linux-loongarch-{s}.so.1", .{switch (abi) {
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.gnuf32 => "lp64f",
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.gnusf => "lp64s",
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else => "lp64d",
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}}),
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.m68k => init("/lib/ld.so.1"),
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.mips,
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.mipsel,
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.mips64,
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.mips64el,
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=> initFmt("/lib{s}/ld{s}.so.1", .{
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switch (abi) {
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.gnuabin32 => "32",
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.gnuabi64 => "64",
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else => "",
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},
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if (mips.featureSetHas(cpu.features, .nan2008)) "-linux-mipsn8" else "",
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}),
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.powerpc => init("/lib/ld.so.1"),
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// TODO: ELFv2 ABI opt-in support.
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.powerpc64 => init("/lib64/ld64.so.1"),
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.powerpc64le => init("/lib64/ld64.so.2"),
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.riscv32,
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.riscv64,
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=> |arch| initFmt("/lib/ld-linux-{s}-{s}{s}.so.1", .{
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@tagName(arch),
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switch (arch) {
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.riscv32 => "ilp32",
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.riscv64 => "lp64",
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else => unreachable,
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},
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if (riscv.featureSetHas(cpu.features, .d))
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"d"
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else if (riscv.featureSetHas(cpu.features, .f))
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"f"
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else
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"",
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}),
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.s390x => init("/lib/ld64.so.1"),
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.sparc => init("/lib/ld-linux.so.2"),
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.sparc64 => init("/lib64/ld-linux.so.2"),
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.x86 => init("/lib/ld-linux.so.2"),
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.x86_64 => init(if (abi == .gnux32) "/libx32/ld-linux-x32.so.2" else "/lib64/ld-linux-x86-64.so.2"),
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.xtensa => init("/lib/ld.so.1"),
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// These are unsupported by glibc.
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.amdgcn,
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.avr,
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.bpfeb,
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.bpfel,
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.hexagon,
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.kalimba,
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.lanai,
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.loongarch32,
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.msp430,
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.nvptx,
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.nvptx64,
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.powerpcle,
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.propeller1,
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.propeller2,
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.spirv,
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.spirv32,
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.spirv64,
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.spu_2,
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.ve,
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.wasm32,
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.wasm64,
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.xcore,
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=> none,
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}
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else
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none, // Not a known Linux libc.
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.serenity => init("/usr/lib/Loader.so"),
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.dragonfly => initFmt("{s}/libexec/ld-elf.so.2", .{
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if (os.version_range.semver.isAtLeast(.{ .major = 3, .minor = 8, .patch = 0 }) orelse false)
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""
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else
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"/usr",
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}),
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.freebsd => initFmt("{s}/libexec/ld-elf.so.1", .{
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if (os.version_range.semver.isAtLeast(.{ .major = 6, .minor = 0, .patch = 0 }) orelse false)
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""
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else
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"/usr",
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}),
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.netbsd => init("/libexec/ld.elf_so"),
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.openbsd => init("/usr/libexec/ld.so"),
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.bridgeos,
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.driverkit,
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.ios,
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.tvos,
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.watchos,
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.macos,
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.tvos,
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.visionos,
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.watchos,
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=> init("/usr/lib/dyld"),
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.serenity => init("/usr/lib/Loader.so"),
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.illumos,
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.solaris,
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=> initFmt("/lib/{s}ld.so.1", .{if (ptrBitWidth_cpu_abi(cpu, abi) == 64) "64/" else ""}),
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// Operating systems in this list have been verified as not having a standard
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// dynamic linker path.
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.freestanding,
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.other,
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.contiki,
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.elfiamcu,
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.hermit,
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.aix,
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.plan9,
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.rtems,
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.zos,
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.uefi,
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.windows,
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.emscripten,
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.wasi,
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.amdhsa,
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.amdpal,
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.cuda,
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.mesa3d,
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.nvcl,
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.opencl,
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.opengl,
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.vulkan,
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.other,
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.plan9,
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=> none,
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// TODO revisit when multi-arch for Haiku is available
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.haiku => init("/system/runtime_loader"),
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// TODO go over each item in this list and either move it to the above list, or
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// implement the standard dynamic linker path code for it.
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.fuchsia,
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.ps3,
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.zos,
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.rtems,
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.aix,
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.cuda,
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.nvcl,
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.amdhsa,
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.ps4,
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.ps5,
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.elfiamcu,
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.mesa3d,
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.contiki,
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.amdpal,
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.hermit,
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.hurd,
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=> none,
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};
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} catch unreachable;
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}
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};
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pub fn standardDynamicLinkerPath(target: Target) DynamicLinker {
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return DynamicLinker.standard(target.cpu, target.os.tag, target.abi);
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return DynamicLinker.standard(target.cpu, target.os, target.abi);
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}
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pub fn ptrBitWidth_cpu_abi(cpu: Cpu, abi: Abi) u16 {
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@@ -1152,7 +1152,7 @@ fn defaultAbiAndDynamicLinker(cpu: Target.Cpu, os: Target.Os, query: Target.Quer
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.abi = abi,
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.ofmt = query.ofmt orelse Target.ObjectFormat.default(os.tag, cpu.arch),
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.dynamic_linker = if (query.dynamic_linker.get() == null)
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Target.DynamicLinker.standard(cpu, os.tag, abi)
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Target.DynamicLinker.standard(cpu, os, abi)
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else
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query.dynamic_linker,
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};
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