diff options
Diffstat (limited to 'src/Compilation.zig')
| -rw-r--r-- | src/Compilation.zig | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/Compilation.zig b/src/Compilation.zig index 00c5937394..dc5fcbf361 100644 --- a/src/Compilation.zig +++ b/src/Compilation.zig @@ -3004,11 +3004,50 @@ pub fn addCCArgs( // all CPU features here. switch (target.cpu.arch) { .riscv32, .riscv64 => { + const RvArchFeat = struct { char: u8, feat: std.Target.riscv.Feature }; + const letters = [_]RvArchFeat{ + .{ .char = 'm', .feat = .m }, + .{ .char = 'a', .feat = .a }, + .{ .char = 'f', .feat = .f }, + .{ .char = 'd', .feat = .d }, + .{ .char = 'c', .feat = .c }, + }; + const prefix: []const u8 = if (target.cpu.arch == .riscv64) "rv64" else "rv32"; + const prefix_len = 4; + assert(prefix.len == prefix_len); + var march_buf: [prefix_len + letters.len]u8 = undefined; + var march_index: usize = prefix_len; + mem.copy(u8, &march_buf, prefix); + + if (std.Target.riscv.featureSetHas(target.cpu.features, .e)) { + march_buf[march_index] = 'e'; + } else { + march_buf[march_index] = 'i'; + } + march_index += 1; + + for (letters) |letter| { + if (std.Target.riscv.featureSetHas(target.cpu.features, letter.feat)) { + march_buf[march_index] = letter.char; + march_index += 1; + } + } + + const march_arg = try std.fmt.allocPrint(arena, "-march={s}", .{ + march_buf[0..march_index], + }); + try argv.append(march_arg); + if (std.Target.riscv.featureSetHas(target.cpu.features, .relax)) { try argv.append("-mrelax"); } else { try argv.append("-mno-relax"); } + if (std.Target.riscv.featureSetHas(target.cpu.features, .save_restore)) { + try argv.append("-msave-restore"); + } else { + try argv.append("-mno-save-restore"); + } }, else => { // TODO |