Add riscv imafc bare metal targets

- riscv32imac-unknown-none-elf
- riscv64imac-unknown-none-elf

Author: MabezDev

Diff for: compiler/rustc_target/src/spec/mod.rs

@@ -1641,10 +1641,12 @@ supported_targets! {
     ("riscv32imc-esp-espidf", riscv32imc_esp_espidf),
     ("riscv32imac-esp-espidf", riscv32imac_esp_espidf),
     ("riscv32imac-unknown-none-elf", riscv32imac_unknown_none_elf),
+    ("riscv32imafc-unknown-none-elf", riscv32imafc_unknown_none_elf),
     ("riscv32imac-unknown-xous-elf", riscv32imac_unknown_xous_elf),
     ("riscv32gc-unknown-linux-gnu", riscv32gc_unknown_linux_gnu),
     ("riscv32gc-unknown-linux-musl", riscv32gc_unknown_linux_musl),
     ("riscv64imac-unknown-none-elf", riscv64imac_unknown_none_elf),
+    ("riscv64imafc-unknown-none-elf", riscv64imafc_unknown_none_elf),
     ("riscv64gc-unknown-none-elf", riscv64gc_unknown_none_elf),
     ("riscv64gc-unknown-linux-gnu", riscv64gc_unknown_linux_gnu),
     ("riscv64gc-unknown-linux-musl", riscv64gc_unknown_linux_musl),

Diff for: compiler/rustc_target/src/spec/targets/riscv32imafc_unknown_none_elf.rs

@@ -0,0 +1,23 @@
+use crate::spec::{Cc, LinkerFlavor, Lld, PanicStrategy, RelocModel, Target, TargetOptions};
+
+pub fn target() -> Target {
+    Target {
+        data_layout: "e-m:e-p:32:32-i64:64-n32-S128".into(),
+        llvm_target: "riscv32".into(),
+        pointer_width: 32,
+        arch: "riscv32".into(),
+
+        options: TargetOptions {
+            linker_flavor: LinkerFlavor::Gnu(Cc::No, Lld::Yes),
+            linker: Some("rust-lld".into()),
+            cpu: "generic-rv32".into(),
+            max_atomic_width: Some(32),
+            features: "+m,+a,+c,+f".into(),
+            panic_strategy: PanicStrategy::Abort,
+            relocation_model: RelocModel::Static,
+            emit_debug_gdb_scripts: false,
+            eh_frame_header: false,
+            ..Default::default()
+        },
+    }
+}

Diff for: compiler/rustc_target/src/spec/targets/riscv64imafc_unknown_none_elf.rs

@@ -0,0 +1,26 @@
+use crate::spec::{Cc, CodeModel, LinkerFlavor, Lld, PanicStrategy};
+use crate::spec::{RelocModel, SanitizerSet, Target, TargetOptions};
+
+pub fn target() -> Target {
+    Target {
+        data_layout: "e-m:e-p:64:64-i64:64-i128:128-n32:64-S128".into(),
+        llvm_target: "riscv64".into(),
+        pointer_width: 64,
+        arch: "riscv64".into(),
+
+        options: TargetOptions {
+            linker_flavor: LinkerFlavor::Gnu(Cc::No, Lld::Yes),
+            linker: Some("rust-lld".into()),
+            cpu: "generic-rv64".into(),
+            max_atomic_width: Some(64),
+            features: "+m,+a,+c,+f".into(),
+            panic_strategy: PanicStrategy::Abort,
+            relocation_model: RelocModel::Static,
+            code_model: Some(CodeModel::Medium),
+            emit_debug_gdb_scripts: false,
+            eh_frame_header: false,
+            supported_sanitizers: SanitizerSet::KERNELADDRESS,
+            ..Default::default()
+        },
+    }
+}

Diff for: src/ci/docker/host-x86_64/dist-various-1/Dockerfile

@@ -96,7 +96,9 @@ ENV TARGETS=$TARGETS,thumbv8m.main-none-eabihf
 ENV TARGETS=$TARGETS,riscv32i-unknown-none-elf
 ENV TARGETS=$TARGETS,riscv32imc-unknown-none-elf
 ENV TARGETS=$TARGETS,riscv32imac-unknown-none-elf
+ENV TARGETS=$TARGETS,riscv32imafc-unknown-none-elf
 ENV TARGETS=$TARGETS,riscv64imac-unknown-none-elf
+ENV TARGETS=$TARGETS,riscv64imafc-unknown-none-elf
 ENV TARGETS=$TARGETS,riscv64gc-unknown-none-elf
 ENV TARGETS=$TARGETS,armebv7r-none-eabi
 ENV TARGETS=$TARGETS,armebv7r-none-eabihf

Diff for: src/doc/rustc/src/platform-support.md

@@ -162,9 +162,11 @@ target | std | notes
 [`nvptx64-nvidia-cuda`](platform-support/nvptx64-nvidia-cuda.md) | * | --emit=asm generates PTX code that [runs on NVIDIA GPUs]
 `riscv32i-unknown-none-elf` | * | Bare RISC-V (RV32I ISA)
 `riscv32imac-unknown-none-elf` | * | Bare RISC-V (RV32IMAC ISA)
+`riscv32imafc-unknown-none-elf` | * | Bare RISC-V (RV32IMAFC ISA)
 `riscv32imc-unknown-none-elf` | * | Bare RISC-V (RV32IMC ISA)
 `riscv64gc-unknown-none-elf` | * | Bare RISC-V (RV64IMAFDC ISA)
 `riscv64imac-unknown-none-elf` | * | Bare RISC-V (RV64IMAC ISA)
+`riscv64imafc-unknown-none-elf` | * | Bare RISC-V (RV64IMAFC ISA)
 `sparc64-unknown-linux-gnu` | ✓ | SPARC Linux (kernel 4.4, glibc 2.23)
 `sparcv9-sun-solaris` | ✓ | SPARC Solaris 10/11, illumos
 `thumbv6m-none-eabi` | * | Bare ARMv6-M

Diff for: src/tools/build-manifest/src/main.rs

@@ -123,8 +123,10 @@ static TARGETS: &[&str] = &[
     "riscv32im-unknown-none-elf",
     "riscv32imc-unknown-none-elf",
     "riscv32imac-unknown-none-elf",
+    "riscv32imafc-unknown-none-elf",
     "riscv32gc-unknown-linux-gnu",
     "riscv64imac-unknown-none-elf",
+    "riscv64imafc-unknown-none-elf",
     "riscv64gc-unknown-hermit",
     "riscv64gc-unknown-none-elf",
     "riscv64gc-unknown-linux-gnu",