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calling convention on function pointers + don't emit many-pointers to c_void

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This commit is contained in:
Robin Voetter
2020-06-17 03:20:19 +02:00
parent a4d5d24212
commit 0d6e65eeec
1 changed files with 20 additions and 5 deletions
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25
generator/render.zig
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@@ -7,11 +7,24 @@ const Allocator = mem.Allocator;
const preamble =
\\const std = @import("std");
\\const builtin = @import("builtin");
\\const root = @import("root");
\\
\\pub const vulkan_call_conv: builtin.CallingConvention = if (builtin.os.tag == .windows)
\\ .Stdcall
\\ else if (builtin.abi == .android and (builtin.cpu.arch.isARM() or builtin.cpu.arch.isThumb()) and builtin.Target.arm.featureSetHas(builtin.cpu.features, .has_v7) and builtin.cpu.arch.ptrBitWidth() == 32)
\\ // On Android 32-bit ARM targets, Vulkan functions use the "hardfloat"
\\ // calling convention, i.e. float parameters are passed in registers. This
\\ // is true even if the rest of the application passes floats on the stack,
\\ // as it does by default when compiling for the armeabi-v7a NDK ABI.
\\ .AAPCSVFP
\\ else
\\ .C;
\\
;
const builtin_types = std.ComptimeStringMap([]const u8, .{
.{"void", @typeName(void)},
.{"char", @typeName(u8)},
.{"float", @typeName(f32)},
.{"double", @typeName(f64)},
@@ -175,8 +188,8 @@ fn Renderer(comptime WriterType: type) type {
},
.dot => {
const decimal = (try tokenizer.next()) orelse return error.InvalidConstantExpr;
try self.writer.print("@as(f32, {}.{})", .{tok.text, decimal.text});
const f = (try tokenizer.next()) orelse return error.InvalidConstantExpr;
if (f.id != .id or !mem.eql(u8, f.text, "f")) {
return error.InvalidApiConstant;
@@ -232,16 +245,19 @@ fn Renderer(comptime WriterType: type) type {
try self.renderTypeInfo(param.param_type);
try self.writer.writeAll(", ");
}
try self.writer.writeAll(") ");
try self.writer.writeAll(") callconv(vulkan_call_conv)");
try self.renderTypeInfo(command_ptr.return_type.*);
}
fn renderPointer(self: *Self, pointer: reg.Pointer) !void {
const child_is_void = pointer.child.* == .name and mem.eql(u8, pointer.child.name, "void");
if (pointer.is_optional) {
try self.writer.writeByte('?');
}
switch (pointer.size) {
const size = if (child_is_void) .one else pointer.size;
switch (size) {
.one => try self.writer.writeByte('*'),
.many => try self.writer.writeAll("[*]"),
.zero_terminated => try self.writer.writeAll("[*:0]"),
@@ -251,8 +267,7 @@ fn Renderer(comptime WriterType: type) type {
try self.writer.writeAll("const ");
}
// Special case: void pointers
if (pointer.child.* == .name and mem.eql(u8, pointer.child.name, "void")) {
if (child_is_void) {
try self.writer.writeAll("c_void");
} else {
try self.renderTypeInfo(pointer.child.*);