zig/src-self-hosted/target.zig

563 lines
18 KiB
Zig

const std = @import("std");
const builtin = @import("builtin");
const llvm = @import("llvm.zig");
const CInt = @import("c_int.zig").CInt;
pub const FloatAbi = enum {
Hard,
Soft,
SoftFp,
};
pub const Target = union(enum) {
Native,
Cross: Cross,
pub const Cross = struct {
arch: builtin.Arch,
os: builtin.Os,
environ: builtin.Environ,
object_format: builtin.ObjectFormat,
};
pub fn objFileExt(self: Target) []const u8 {
return switch (self.getObjectFormat()) {
builtin.ObjectFormat.coff => ".obj",
else => ".o",
};
}
pub fn exeFileExt(self: Target) []const u8 {
return switch (self.getOs()) {
builtin.Os.windows => ".exe",
else => "",
};
}
pub fn libFileExt(self: Target, is_static: bool) []const u8 {
return switch (self.getOs()) {
builtin.Os.windows => if (is_static) ".lib" else ".dll",
else => if (is_static) ".a" else ".so",
};
}
pub fn getOs(self: Target) builtin.Os {
return switch (self) {
Target.Native => builtin.os,
@TagType(Target).Cross => |t| t.os,
};
}
pub fn getArch(self: Target) builtin.Arch {
return switch (self) {
Target.Native => builtin.arch,
@TagType(Target).Cross => |t| t.arch,
};
}
pub fn getEnviron(self: Target) builtin.Environ {
return switch (self) {
Target.Native => builtin.environ,
@TagType(Target).Cross => |t| t.environ,
};
}
pub fn getObjectFormat(self: Target) builtin.ObjectFormat {
return switch (self) {
Target.Native => builtin.object_format,
@TagType(Target).Cross => |t| t.object_format,
};
}
pub fn isWasm(self: Target) bool {
return switch (self.getArch()) {
builtin.Arch.wasm32, builtin.Arch.wasm64 => true,
else => false,
};
}
pub fn isDarwin(self: Target) bool {
return switch (self.getOs()) {
builtin.Os.ios, builtin.Os.macosx => true,
else => false,
};
}
pub fn isWindows(self: Target) bool {
return switch (self.getOs()) {
builtin.Os.windows => true,
else => false,
};
}
/// TODO expose the arch and subarch separately
pub fn isArmOrThumb(self: Target) bool {
return switch (self.getArch()) {
builtin.Arch.armv8_3a,
builtin.Arch.armv8_2a,
builtin.Arch.armv8_1a,
builtin.Arch.armv8,
builtin.Arch.armv8r,
builtin.Arch.armv8m_baseline,
builtin.Arch.armv8m_mainline,
builtin.Arch.armv7,
builtin.Arch.armv7em,
builtin.Arch.armv7m,
builtin.Arch.armv7s,
builtin.Arch.armv7k,
builtin.Arch.armv7ve,
builtin.Arch.armv6,
builtin.Arch.armv6m,
builtin.Arch.armv6k,
builtin.Arch.armv6t2,
builtin.Arch.armv5,
builtin.Arch.armv5te,
builtin.Arch.armv4t,
builtin.Arch.armebv8_3a,
builtin.Arch.armebv8_2a,
builtin.Arch.armebv8_1a,
builtin.Arch.armebv8,
builtin.Arch.armebv8r,
builtin.Arch.armebv8m_baseline,
builtin.Arch.armebv8m_mainline,
builtin.Arch.armebv7,
builtin.Arch.armebv7em,
builtin.Arch.armebv7m,
builtin.Arch.armebv7s,
builtin.Arch.armebv7k,
builtin.Arch.armebv7ve,
builtin.Arch.armebv6,
builtin.Arch.armebv6m,
builtin.Arch.armebv6k,
builtin.Arch.armebv6t2,
builtin.Arch.armebv5,
builtin.Arch.armebv5te,
builtin.Arch.armebv4t,
builtin.Arch.thumb,
builtin.Arch.thumbeb,
=> true,
else => false,
};
}
pub fn initializeAll() void {
llvm.InitializeAllTargets();
llvm.InitializeAllTargetInfos();
llvm.InitializeAllTargetMCs();
llvm.InitializeAllAsmPrinters();
llvm.InitializeAllAsmParsers();
}
pub fn getTriple(self: Target, allocator: *std.mem.Allocator) !std.Buffer {
var result = try std.Buffer.initSize(allocator, 0);
errdefer result.deinit();
// LLVM WebAssembly output support requires the target to be activated at
// build type with -DCMAKE_LLVM_EXPIERMENTAL_TARGETS_TO_BUILD=WebAssembly.
//
// LLVM determines the output format based on the environment suffix,
// defaulting to an object based on the architecture. The default format in
// LLVM 6 sets the wasm arch output incorrectly to ELF. We need to
// explicitly set this ourself in order for it to work.
//
// This is fixed in LLVM 7 and you will be able to get wasm output by
// using the target triple `wasm32-unknown-unknown-unknown`.
const env_name = if (self.isWasm()) "wasm" else @tagName(self.getEnviron());
var out = &std.io.BufferOutStream.init(&result).stream;
try out.print("{}-unknown-{}-{}", @tagName(self.getArch()), @tagName(self.getOs()), env_name);
return result;
}
pub fn is64bit(self: Target) bool {
return self.getArchPtrBitWidth() == 64;
}
pub fn getArchPtrBitWidth(self: Target) u32 {
switch (self.getArch()) {
builtin.Arch.avr,
builtin.Arch.msp430,
=> return 16,
builtin.Arch.arc,
builtin.Arch.armv8_3a,
builtin.Arch.armv8_2a,
builtin.Arch.armv8_1a,
builtin.Arch.armv8,
builtin.Arch.armv8r,
builtin.Arch.armv8m_baseline,
builtin.Arch.armv8m_mainline,
builtin.Arch.armv7,
builtin.Arch.armv7em,
builtin.Arch.armv7m,
builtin.Arch.armv7s,
builtin.Arch.armv7k,
builtin.Arch.armv7ve,
builtin.Arch.armv6,
builtin.Arch.armv6m,
builtin.Arch.armv6k,
builtin.Arch.armv6t2,
builtin.Arch.armv5,
builtin.Arch.armv5te,
builtin.Arch.armv4t,
builtin.Arch.armebv8_3a,
builtin.Arch.armebv8_2a,
builtin.Arch.armebv8_1a,
builtin.Arch.armebv8,
builtin.Arch.armebv8r,
builtin.Arch.armebv8m_baseline,
builtin.Arch.armebv8m_mainline,
builtin.Arch.armebv7,
builtin.Arch.armebv7em,
builtin.Arch.armebv7m,
builtin.Arch.armebv7s,
builtin.Arch.armebv7k,
builtin.Arch.armebv7ve,
builtin.Arch.armebv6,
builtin.Arch.armebv6m,
builtin.Arch.armebv6k,
builtin.Arch.armebv6t2,
builtin.Arch.armebv5,
builtin.Arch.armebv5te,
builtin.Arch.armebv4t,
builtin.Arch.hexagon,
builtin.Arch.le32,
builtin.Arch.mips,
builtin.Arch.mipsel,
builtin.Arch.nios2,
builtin.Arch.powerpc,
builtin.Arch.r600,
builtin.Arch.riscv32,
builtin.Arch.sparc,
builtin.Arch.sparcel,
builtin.Arch.tce,
builtin.Arch.tcele,
builtin.Arch.thumb,
builtin.Arch.thumbeb,
builtin.Arch.i386,
builtin.Arch.xcore,
builtin.Arch.nvptx,
builtin.Arch.amdil,
builtin.Arch.hsail,
builtin.Arch.spir,
builtin.Arch.kalimbav3,
builtin.Arch.kalimbav4,
builtin.Arch.kalimbav5,
builtin.Arch.shave,
builtin.Arch.lanai,
builtin.Arch.wasm32,
builtin.Arch.renderscript32,
=> return 32,
builtin.Arch.aarch64,
builtin.Arch.aarch64_be,
builtin.Arch.mips64,
builtin.Arch.mips64el,
builtin.Arch.powerpc64,
builtin.Arch.powerpc64le,
builtin.Arch.riscv64,
builtin.Arch.x86_64,
builtin.Arch.nvptx64,
builtin.Arch.le64,
builtin.Arch.amdil64,
builtin.Arch.hsail64,
builtin.Arch.spir64,
builtin.Arch.wasm64,
builtin.Arch.renderscript64,
builtin.Arch.amdgcn,
builtin.Arch.bpfel,
builtin.Arch.bpfeb,
builtin.Arch.sparcv9,
builtin.Arch.s390x,
=> return 64,
}
}
pub fn getFloatAbi(self: Target) FloatAbi {
return switch (self.getEnviron()) {
builtin.Environ.gnueabihf,
builtin.Environ.eabihf,
builtin.Environ.musleabihf,
=> FloatAbi.Hard,
else => FloatAbi.Soft,
};
}
pub fn getDynamicLinkerPath(self: Target) ?[]const u8 {
const env = self.getEnviron();
const arch = self.getArch();
switch (env) {
builtin.Environ.android => {
if (self.is64bit()) {
return "/system/bin/linker64";
} else {
return "/system/bin/linker";
}
},
builtin.Environ.gnux32 => {
if (arch == builtin.Arch.x86_64) {
return "/libx32/ld-linux-x32.so.2";
}
},
builtin.Environ.musl,
builtin.Environ.musleabi,
builtin.Environ.musleabihf,
=> {
if (arch == builtin.Arch.x86_64) {
return "/lib/ld-musl-x86_64.so.1";
}
},
else => {},
}
switch (arch) {
builtin.Arch.i386,
builtin.Arch.sparc,
builtin.Arch.sparcel,
=> return "/lib/ld-linux.so.2",
builtin.Arch.aarch64 => return "/lib/ld-linux-aarch64.so.1",
builtin.Arch.aarch64_be => return "/lib/ld-linux-aarch64_be.so.1",
builtin.Arch.armv8_3a,
builtin.Arch.armv8_2a,
builtin.Arch.armv8_1a,
builtin.Arch.armv8,
builtin.Arch.armv8r,
builtin.Arch.armv8m_baseline,
builtin.Arch.armv8m_mainline,
builtin.Arch.armv7,
builtin.Arch.armv7em,
builtin.Arch.armv7m,
builtin.Arch.armv7s,
builtin.Arch.armv7k,
builtin.Arch.armv7ve,
builtin.Arch.armv6,
builtin.Arch.armv6m,
builtin.Arch.armv6k,
builtin.Arch.armv6t2,
builtin.Arch.armv5,
builtin.Arch.armv5te,
builtin.Arch.armv4t,
builtin.Arch.thumb,
=> return switch (self.getFloatAbi()) {
FloatAbi.Hard => return "/lib/ld-linux-armhf.so.3",
else => return "/lib/ld-linux.so.3",
},
builtin.Arch.armebv8_3a,
builtin.Arch.armebv8_2a,
builtin.Arch.armebv8_1a,
builtin.Arch.armebv8,
builtin.Arch.armebv8r,
builtin.Arch.armebv8m_baseline,
builtin.Arch.armebv8m_mainline,
builtin.Arch.armebv7,
builtin.Arch.armebv7em,
builtin.Arch.armebv7m,
builtin.Arch.armebv7s,
builtin.Arch.armebv7k,
builtin.Arch.armebv7ve,
builtin.Arch.armebv6,
builtin.Arch.armebv6m,
builtin.Arch.armebv6k,
builtin.Arch.armebv6t2,
builtin.Arch.armebv5,
builtin.Arch.armebv5te,
builtin.Arch.armebv4t,
builtin.Arch.thumbeb,
=> return switch (self.getFloatAbi()) {
FloatAbi.Hard => return "/lib/ld-linux-armhf.so.3",
else => return "/lib/ld-linux.so.3",
},
builtin.Arch.mips,
builtin.Arch.mipsel,
builtin.Arch.mips64,
builtin.Arch.mips64el,
=> return null,
builtin.Arch.powerpc => return "/lib/ld.so.1",
builtin.Arch.powerpc64 => return "/lib64/ld64.so.2",
builtin.Arch.powerpc64le => return "/lib64/ld64.so.2",
builtin.Arch.s390x => return "/lib64/ld64.so.1",
builtin.Arch.sparcv9 => return "/lib64/ld-linux.so.2",
builtin.Arch.x86_64 => return "/lib64/ld-linux-x86-64.so.2",
builtin.Arch.arc,
builtin.Arch.avr,
builtin.Arch.bpfel,
builtin.Arch.bpfeb,
builtin.Arch.hexagon,
builtin.Arch.msp430,
builtin.Arch.nios2,
builtin.Arch.r600,
builtin.Arch.amdgcn,
builtin.Arch.riscv32,
builtin.Arch.riscv64,
builtin.Arch.tce,
builtin.Arch.tcele,
builtin.Arch.xcore,
builtin.Arch.nvptx,
builtin.Arch.nvptx64,
builtin.Arch.le32,
builtin.Arch.le64,
builtin.Arch.amdil,
builtin.Arch.amdil64,
builtin.Arch.hsail,
builtin.Arch.hsail64,
builtin.Arch.spir,
builtin.Arch.spir64,
builtin.Arch.kalimbav3,
builtin.Arch.kalimbav4,
builtin.Arch.kalimbav5,
builtin.Arch.shave,
builtin.Arch.lanai,
builtin.Arch.wasm32,
builtin.Arch.wasm64,
builtin.Arch.renderscript32,
builtin.Arch.renderscript64,
=> return null,
}
}
pub fn llvmTargetFromTriple(triple: std.Buffer) !llvm.TargetRef {
var result: llvm.TargetRef = undefined;
var err_msg: [*]u8 = undefined;
if (llvm.GetTargetFromTriple(triple.ptr(), &result, &err_msg) != 0) {
std.debug.warn("triple: {s} error: {s}\n", triple.ptr(), err_msg);
return error.UnsupportedTarget;
}
return result;
}
pub fn cIntTypeSizeInBits(self: Target, id: CInt.Id) u32 {
const arch = self.getArch();
switch (self.getOs()) {
builtin.Os.freestanding => switch (self.getArch()) {
builtin.Arch.msp430 => switch (id) {
CInt.Id.Short,
CInt.Id.UShort,
CInt.Id.Int,
CInt.Id.UInt,
=> return 16,
CInt.Id.Long,
CInt.Id.ULong,
=> return 32,
CInt.Id.LongLong,
CInt.Id.ULongLong,
=> return 64,
},
else => switch (id) {
CInt.Id.Short,
CInt.Id.UShort,
=> return 16,
CInt.Id.Int,
CInt.Id.UInt,
=> return 32,
CInt.Id.Long,
CInt.Id.ULong,
=> return self.getArchPtrBitWidth(),
CInt.Id.LongLong,
CInt.Id.ULongLong,
=> return 64,
},
},
builtin.Os.linux,
builtin.Os.macosx,
builtin.Os.openbsd,
builtin.Os.zen,
=> switch (id) {
CInt.Id.Short,
CInt.Id.UShort,
=> return 16,
CInt.Id.Int,
CInt.Id.UInt,
=> return 32,
CInt.Id.Long,
CInt.Id.ULong,
=> return self.getArchPtrBitWidth(),
CInt.Id.LongLong,
CInt.Id.ULongLong,
=> return 64,
},
builtin.Os.windows => switch (id) {
CInt.Id.Short,
CInt.Id.UShort,
=> return 16,
CInt.Id.Int,
CInt.Id.UInt,
=> return 32,
CInt.Id.Long,
CInt.Id.ULong,
CInt.Id.LongLong,
CInt.Id.ULongLong,
=> return 64,
},
builtin.Os.ananas,
builtin.Os.cloudabi,
builtin.Os.dragonfly,
builtin.Os.freebsd,
builtin.Os.fuchsia,
builtin.Os.ios,
builtin.Os.kfreebsd,
builtin.Os.lv2,
builtin.Os.netbsd,
builtin.Os.solaris,
builtin.Os.haiku,
builtin.Os.minix,
builtin.Os.rtems,
builtin.Os.nacl,
builtin.Os.cnk,
builtin.Os.aix,
builtin.Os.cuda,
builtin.Os.nvcl,
builtin.Os.amdhsa,
builtin.Os.ps4,
builtin.Os.elfiamcu,
builtin.Os.tvos,
builtin.Os.watchos,
builtin.Os.mesa3d,
builtin.Os.contiki,
builtin.Os.amdpal,
=> @panic("TODO specify the C integer type sizes for this OS"),
}
}
pub fn getDarwinArchString(self: Target) []const u8 {
const arch = self.getArch();
switch (arch) {
builtin.Arch.aarch64 => return "arm64",
builtin.Arch.thumb,
builtin.Arch.armv8_3a,
builtin.Arch.armv8_2a,
builtin.Arch.armv8_1a,
builtin.Arch.armv8,
builtin.Arch.armv8r,
builtin.Arch.armv8m_baseline,
builtin.Arch.armv8m_mainline,
builtin.Arch.armv7,
builtin.Arch.armv7em,
builtin.Arch.armv7m,
builtin.Arch.armv7s,
builtin.Arch.armv7k,
builtin.Arch.armv7ve,
builtin.Arch.armv6,
builtin.Arch.armv6m,
builtin.Arch.armv6k,
builtin.Arch.armv6t2,
builtin.Arch.armv5,
builtin.Arch.armv5te,
builtin.Arch.armv4t,
=> return "arm",
builtin.Arch.powerpc => return "ppc",
builtin.Arch.powerpc64 => return "ppc64",
builtin.Arch.powerpc64le => return "ppc64le",
else => return @tagName(arch),
}
}
};