Adds binary_format to rustc target specs

Author: Pyr0de

compiler/rustc_target/src/spec/base/aix.rs

@@ -1,6 +1,8 @@
 use rustc_abi::Endian;
 
-use crate::spec::{Cc, CodeModel, LinkOutputKind, LinkerFlavor, TargetOptions, crt_objects, cvs};
+use crate::spec::{
+    BinaryFormat, Cc, CodeModel, LinkOutputKind, LinkerFlavor, TargetOptions, crt_objects, cvs,
+};
 
 pub(crate) fn opts() -> TargetOptions {
     TargetOptions {
@@ -21,6 +23,7 @@ pub(crate) fn opts() -> TargetOptions {
         linker: Some("ld".into()),
         eh_frame_header: false,
         is_like_aix: true,
+        binary_format: BinaryFormat::Xcoff,
         default_dwarf_version: 3,
         function_sections: true,
         pre_link_objects: crt_objects::new(&[

compiler/rustc_target/src/spec/base/apple/mod.rs

@@ -2,8 +2,8 @@ use std::borrow::Cow;
 use std::env;
 
 use crate::spec::{
-    Cc, DebuginfoKind, FloatAbi, FramePointer, LinkerFlavor, Lld, SplitDebuginfo, StackProbeType,
-    StaticCow, TargetOptions, cvs,
+    BinaryFormat, Cc, DebuginfoKind, FloatAbi, FramePointer, LinkerFlavor, Lld, SplitDebuginfo,
+    StackProbeType, StaticCow, TargetOptions, cvs,
 };
 
 #[cfg(test)]
@@ -116,6 +116,7 @@ pub(crate) fn base(
         dynamic_linking: true,
         families: cvs!["unix"],
         is_like_osx: true,
+        binary_format: BinaryFormat::MachO,
         // LLVM notes that macOS 10.11+ and iOS 9+ default
         // to v4, so we do the same.
         // https://github.com/llvm/llvm-project/blob/378778a0d10c2f8d5df8ceff81f95b6002984a4b/clang/lib/Driver/ToolChains/Darwin.cpp#L1203

compiler/rustc_target/src/spec/base/msvc.rs

@@ -1,6 +1,6 @@
 use std::borrow::Cow;
 
-use crate::spec::{DebuginfoKind, LinkerFlavor, Lld, SplitDebuginfo, TargetOptions};
+use crate::spec::{BinaryFormat, DebuginfoKind, LinkerFlavor, Lld, SplitDebuginfo, TargetOptions};
 
 pub(crate) fn opts() -> TargetOptions {
     // Suppress the verbose logo and authorship debugging output, which would needlessly
@@ -12,6 +12,7 @@ pub(crate) fn opts() -> TargetOptions {
         dll_tls_export: false,
         is_like_windows: true,
         is_like_msvc: true,
+        binary_format: BinaryFormat::Coff,
         pre_link_args,
         abi_return_struct_as_int: true,
         emit_debug_gdb_scripts: false,

compiler/rustc_target/src/spec/base/wasm.rs

@@ -1,6 +1,6 @@
 use crate::spec::{
-    Cc, LinkSelfContainedDefault, LinkerFlavor, PanicStrategy, RelocModel, TargetOptions, TlsModel,
-    add_link_args, cvs,
+    BinaryFormat, Cc, LinkSelfContainedDefault, LinkerFlavor, PanicStrategy, RelocModel,
+    TargetOptions, TlsModel, add_link_args, cvs,
 };
 
 pub(crate) fn options() -> TargetOptions {
@@ -53,6 +53,7 @@ pub(crate) fn options() -> TargetOptions {
 
     TargetOptions {
         is_like_wasm: true,
+        binary_format: BinaryFormat::Wasm,
         families: cvs!["wasm"],
 
         // we allow dynamic linking, but only cdylibs. Basically we allow a

compiler/rustc_target/src/spec/base/windows_gnu.rs

@@ -1,8 +1,8 @@
 use std::borrow::Cow;
 
 use crate::spec::{
-    Cc, DebuginfoKind, LinkSelfContainedDefault, LinkerFlavor, Lld, SplitDebuginfo, TargetOptions,
-    add_link_args, crt_objects, cvs,
+    BinaryFormat, Cc, DebuginfoKind, LinkSelfContainedDefault, LinkerFlavor, Lld, SplitDebuginfo,
+    TargetOptions, add_link_args, crt_objects, cvs,
 };
 
 pub(crate) fn opts() -> TargetOptions {
@@ -83,6 +83,7 @@ pub(crate) fn opts() -> TargetOptions {
         exe_suffix: ".exe".into(),
         families: cvs!["windows"],
         is_like_windows: true,
+        binary_format: BinaryFormat::Coff,
         allows_weak_linkage: false,
         pre_link_args,
         pre_link_objects: crt_objects::pre_mingw(),

compiler/rustc_target/src/spec/base/windows_gnullvm.rs

@@ -1,6 +1,8 @@
 use std::borrow::Cow;
 
-use crate::spec::{Cc, DebuginfoKind, LinkerFlavor, Lld, SplitDebuginfo, TargetOptions, cvs};
+use crate::spec::{
+    BinaryFormat, Cc, DebuginfoKind, LinkerFlavor, Lld, SplitDebuginfo, TargetOptions, cvs,
+};
 
 pub(crate) fn opts() -> TargetOptions {
     // We cannot use `-nodefaultlibs` because compiler-rt has to be passed
@@ -33,6 +35,7 @@ pub(crate) fn opts() -> TargetOptions {
         exe_suffix: ".exe".into(),
         families: cvs!["windows"],
         is_like_windows: true,
+        binary_format: BinaryFormat::Coff,
         allows_weak_linkage: false,
         pre_link_args,
         late_link_args,

compiler/rustc_target/src/spec/json.rs

@@ -103,6 +103,19 @@ impl Target {
                     base.$key_name = Some(s);
                 }
             } );
+            ($key_name:ident, BinaryFormat) => ( {
+                let name = (stringify!($key_name)).replace("_", "-");
+                obj.remove(&name).and_then(|f| f.as_str().and_then(|s| {
+                    match s.parse::<super::BinaryFormat>() {
+                        Ok(binary_format) => base.$key_name = binary_format,
+                        _ => return Some(Err(format!(
+                            "'{s}' is not a valid value for binary_format. \
+                            Use 'Coff', 'Elf', 'MachO', 'Wasm' or 'Xcoff' "
+                        ))),
+                    }
+                    Some(Ok(()))
+                })).unwrap_or(Ok(()))
+            } );
             ($key_name:ident, MergeFunctions) => ( {
                 let name = (stringify!($key_name)).replace("_", "-");
                 obj.remove(&name).and_then(|o| o.as_str().and_then(|s| {
@@ -585,6 +598,7 @@ impl Target {
         key!(is_like_msvc, bool);
         key!(is_like_wasm, bool);
         key!(is_like_android, bool);
+        key!(binary_format, BinaryFormat)?;
         key!(default_dwarf_version, u32);
         key!(allows_weak_linkage, bool);
         key!(has_rpath, bool);
@@ -762,6 +776,7 @@ impl ToJson for Target {
         target_option_val!(is_like_msvc);
         target_option_val!(is_like_wasm);
         target_option_val!(is_like_android);
+        target_option_val!(binary_format);
         target_option_val!(default_dwarf_version);
         target_option_val!(allows_weak_linkage);
         target_option_val!(has_rpath);

compiler/rustc_target/src/spec/mod.rs

@@ -2076,6 +2076,42 @@ enum TargetKind {
     Builtin,
 }
 
+#[derive(PartialEq, Clone, Debug)]
+pub enum BinaryFormat {
+    Coff,
+    Elf,
+    MachO,
+    Wasm,
+    Xcoff,
+}
+
+impl FromStr for BinaryFormat {
+    type Err = ();
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s {
+            "Coff" => Ok(Self::Coff),
+            "Elf" => Ok(Self::Elf),
+            "MachO" => Ok(Self::MachO),
+            "Wasm" => Ok(Self::Wasm),
+            "Xcoff" => Ok(Self::Xcoff),
+            _ => Err(()),
+        }
+    }
+}
+
+impl ToJson for BinaryFormat {
+    fn to_json(&self) -> Json {
+        match self {
+            Self::Coff => "Coff",
+            Self::Elf => "Elf",
+            Self::MachO => "MachO",
+            Self::Wasm => "Wasm",
+            Self::Xcoff => "Xcoff",
+        }
+        .to_json()
+    }
+}
+
 /// Everything `rustc` knows about how to compile for a specific target.
 ///
 /// Every field here must be specified, and has no default value.
@@ -2369,6 +2405,8 @@ pub struct TargetOptions {
     pub is_like_wasm: bool,
     /// Whether a target toolchain is like Android, implying a Linux kernel and a Bionic libc
     pub is_like_android: bool,
+    /// Default used is BinaryFormat::Elf
+    pub binary_format: BinaryFormat,
     /// Default supported version of DWARF on this platform.
     /// Useful because some platforms (osx, bsd) only want up to DWARF2.
     pub default_dwarf_version: u32,
@@ -2744,6 +2782,7 @@ impl Default for TargetOptions {
             is_like_msvc: false,
             is_like_wasm: false,
             is_like_android: false,
+            binary_format: BinaryFormat::Elf,
             default_dwarf_version: 4,
             allows_weak_linkage: true,
             has_rpath: false,