Switch CPU/features to simple format

1 files changed, 109 insertions, 0 deletions

diff --git a/lib/std/target/riscv.zig b/lib/std/target/riscv.zig
new file mode 100644
index 0000000000..6ed1012f21
--- /dev/null
+++ b/lib/std/target/riscv.zig
@@ -0,0 +1,109 @@
+const Feature = @import("std").target.Feature;
+const Cpu = @import("std").target.Cpu;
+
+pub const feature_bit64 = Feature{
+    .name = "64bit",
+    .description = "Implements RV64",
+    .llvm_name = "64bit",
+    .subfeatures = &[_]*const Feature {
+    },
+};
+
+pub const feature_e = Feature{
+    .name = "e",
+    .description = "Implements RV32E (provides 16 rather than 32 GPRs)",
+    .llvm_name = "e",
+    .subfeatures = &[_]*const Feature {
+    },
+};
+
+pub const feature_rvcHints = Feature{
+    .name = "rvc-hints",
+    .description = "Enable RVC Hint Instructions.",
+    .llvm_name = "rvc-hints",
+    .subfeatures = &[_]*const Feature {
+    },
+};
+
+pub const feature_relax = Feature{
+    .name = "relax",
+    .description = "Enable Linker relaxation.",
+    .llvm_name = "relax",
+    .subfeatures = &[_]*const Feature {
+    },
+};
+
+pub const feature_a = Feature{
+    .name = "a",
+    .description = "'A' (Atomic Instructions)",
+    .llvm_name = "a",
+    .subfeatures = &[_]*const Feature {
+    },
+};
+
+pub const feature_c = Feature{
+    .name = "c",
+    .description = "'C' (Compressed Instructions)",
+    .llvm_name = "c",
+    .subfeatures = &[_]*const Feature {
+    },
+};
+
+pub const feature_d = Feature{
+    .name = "d",
+    .description = "'D' (Double-Precision Floating-Point)",
+    .llvm_name = "d",
+    .subfeatures = &[_]*const Feature {
+        &feature_f,
+    },
+};
+
+pub const feature_f = Feature{
+    .name = "f",
+    .description = "'F' (Single-Precision Floating-Point)",
+    .llvm_name = "f",
+    .subfeatures = &[_]*const Feature {
+    },
+};
+
+pub const feature_m = Feature{
+    .name = "m",
+    .description = "'M' (Integer Multiplication and Division)",
+    .llvm_name = "m",
+    .subfeatures = &[_]*const Feature {
+    },
+};
+
+pub const features = &[_]*const Feature {
+    &feature_bit64,
+    &feature_e,
+    &feature_rvcHints,
+    &feature_relax,
+    &feature_a,
+    &feature_c,
+    &feature_d,
+    &feature_f,
+    &feature_m,
+};
+
+pub const cpu_genericRv32 = Cpu{
+    .name = "generic-rv32",
+    .llvm_name = "generic-rv32",
+    .subfeatures = &[_]*const Feature {
+        &feature_rvcHints,
+    },
+};
+
+pub const cpu_genericRv64 = Cpu{
+    .name = "generic-rv64",
+    .llvm_name = "generic-rv64",
+    .subfeatures = &[_]*const Feature {
+        &feature_bit64,
+        &feature_rvcHints,
+    },
+};
+
+pub const cpus = &[_]*const Cpu {
+    &cpu_genericRv32,
+    &cpu_genericRv64,
+};