Commit 6ece36a051f5cf2bd2329d3f6512a7e9d55486a3 | zig

author	Noam Preil <noam@pixelhero.dev> 2020-07-07 17:51:59-04:00
committer	Noam Preil <noam@pixelhero.dev> 2020-07-07 17:51:59-04:00
log	6ece36a051f5cf2bd2329d3f6512a7e9d55486a3
tree	89308f01b6a0ef341647175ecc761024d76e9477
parent	2f28ecf946b566f40e648145af18d207d0c5770d
signature	Commit is signed but in an unrecognized format.

3 files changed, 46 insertions(+), 3 deletions(-)

src-self-hosted/cgen.zig+40-1

...	...	@@ -1,11 +1,50 @@
1	1	const link = @import("link.zig");
2	2	const Module = @import("Module.zig");
	3	const std = @import("std");
	4	const Value = @import("value.zig").Value;
3	5
4	6	const C = link.File.C;
5	7	const Decl = Module.Decl;
6	8	const CStandard = Module.CStandard;
	9	const mem = std.mem;
	10
	11	/// Maps a name from Zig source to C. This will always give the same output for
	12	/// any given input.
	13	fn map(name: []const u8) ![]const u8 {
	14	return name;
	15	}
7	16
8	17	pub fn generate(file: C, decl: Decl, standard: CStandard) !void {
9	18	const writer = file.file.?.writer();
10		try writer.print("Generating decl '{}', targeting {}", .{ decl.name, @tagName(standard) });
	19	const tv = decl.typed_value.most_recent.typed_value;
	20	switch (tv.ty.zigTypeTag()) {
	21	.Fn => {
	22	const return_type = tv.ty.fnReturnType();
	23	switch (return_type.zigTypeTag()) {
	24	.NoReturn => try writer.writeAll("_Noreturn void "),
	25	else => return error.Unimplemented,
	26	}
	27
	28	const name = try map(mem.spanZ(decl.name));
	29	try writer.print("{} (", .{name});
	30	if (tv.ty.fnParamLen() == 0) {
	31	try writer.writeAll("void){");
	32	} else {
	33	return error.Unimplemented;
	34	}
	35
	36	const func: *Module.Fn = tv.val.cast(Value.Payload.Function).?.func;
	37	const instructions = func.analysis.success.instructions;
	38	if (instructions.len > 0) {
	39	try writer.writeAll("\n\t");
	40	for (instructions) \|inst\| {
	41	std.debug.warn("\nTranslating {}\n", .{inst.*});
	42	}
	43	try writer.writeAll("\n");
	44	}
	45
	46	try writer.writeAll("}\n");
	47	},
	48	else => return error.Unimplemented,
	49	}
11	50	}

src-self-hosted/test.zig+1

...	...	@@ -482,6 +482,7 @@ pub const TestContext = struct {
482	482	label = @tagName(cstd);
483	483	var c: *link.File.C = module.bin_file.cast(link.File.C).?;
484	484	c.file.?.close();
	485	c.file = null;
485	486	var file = try tmp.dir.openFile(bin_name, .{ .read = true });
486	487	defer file.close();
487	488	var out = file.reader().readAllAlloc(allocator, 1024 * 1024) catch @panic("Unable to read C output!");

test/stage2/cbe.zig+5-2

...	...	@@ -11,8 +11,11 @@ const linux_x64 = std.zig.CrossTarget{
11	11	pub fn addCases(ctx: *TestContext) !void {
12	12	// These tests should work on every platform
13	13	ctx.c11("empty start function", linux_x64,
14		\\export fn start() void {}
	14	\\export fn _start() noreturn {}
15	15	,
16		\\void start(void) {}
	16	// A newline is always generated after every function; this ensures, among
	17	// other things, that there is always a newline at the end of the file
	18	\\_Noreturn void _start(void) {}
	19	\\
17	20	);
18	21	}