mirror of
https://github.com/ziglang/zig.git
synced 2025-12-06 22:33:08 +00:00
f26dda2117
Most of this migration was performed automatically with `zig fmt`. There were a few exceptions which I had to manually fix: * `@alignCast` and `@addrSpaceCast` cannot be automatically rewritten * `@truncate`'s fixup is incorrect for vectors * Test cases are not formatted, and their error locations change
57 lines
1.3 KiB
Zig
57 lines
1.3 KiB
Zig
const std = @import("../../std.zig");
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const bits = switch (@import("builtin").cpu.arch) {
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.mips,
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.mipsel,
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.mips64,
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.mips64el,
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.powerpc,
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.powerpcle,
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.powerpc64,
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.powerpc64le,
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.sparc,
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.sparc64,
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.sparcel,
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=> .{ .size = 13, .dir = 3, .none = 1, .read = 2, .write = 4 },
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else => .{ .size = 14, .dir = 2, .none = 0, .read = 2, .write = 1 },
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};
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const Direction = std.meta.Int(.unsigned, bits.dir);
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pub const Request = packed struct {
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nr: u8,
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io_type: u8,
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size: std.meta.Int(.unsigned, bits.size),
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dir: Direction,
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};
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fn io_impl(dir: Direction, io_type: u8, nr: u8, comptime T: type) u32 {
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const request = Request{
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.dir = dir,
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.size = @sizeOf(T),
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.io_type = io_type,
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.nr = nr,
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};
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return @as(u32, @bitCast(request));
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}
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pub fn IO(io_type: u8, nr: u8) u32 {
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return io_impl(bits.none, io_type, nr, void);
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}
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pub fn IOR(io_type: u8, nr: u8, comptime T: type) u32 {
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return io_impl(bits.read, io_type, nr, T);
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}
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pub fn IOW(io_type: u8, nr: u8, comptime T: type) u32 {
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return io_impl(bits.write, io_type, nr, T);
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}
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pub fn IOWR(io_type: u8, nr: u8, comptime T: type) u32 {
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return io_impl(bits.read | bits.write, io_type, nr, T);
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}
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comptime {
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std.debug.assert(@bitSizeOf(Request) == 32);
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}
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