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|
const std = @import("std");
const builtin = @import("builtin");
const expect = std.testing.expect;
const expectEqual = std.testing.expectEqual;
const is_x86_64_linux = builtin.cpu.arch == .x86_64 and builtin.os.tag == .linux;
comptime {
if (builtin.zig_backend != .stage2_arm and
builtin.zig_backend != .stage2_aarch64 and
!(builtin.zig_backend == .stage2_c and builtin.os.tag == .windows) and // MSVC doesn't support inline assembly
is_x86_64_linux)
{
asm (
\\.globl this_is_my_alias;
);
// test multiple asm per comptime block
asm (
\\.type this_is_my_alias, @function;
\\.set this_is_my_alias, derp;
);
} else if (builtin.zig_backend == .stage2_spirv64) {
asm (
\\%a = OpString "hello there"
);
}
}
test "module level assembly" {
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_c and builtin.os.tag == .windows) return error.SkipZigTest; // MSVC doesn't support inline assembly
if (is_x86_64_linux) {
try expect(this_is_my_alias() == 1234);
}
}
test "output constraint modifiers" {
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_c and builtin.os.tag == .windows) return error.SkipZigTest; // MSVC doesn't support inline assembly
// This is only testing compilation.
var a: u32 = 3;
asm volatile (""
: [_] "=m,r" (a),
:
: ""
);
asm volatile (""
: [_] "=r,m" (a),
:
: ""
);
}
test "alternative constraints" {
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_c and builtin.os.tag == .windows) return error.SkipZigTest; // MSVC doesn't support inline assembly
// Make sure we allow commas as a separator for alternative constraints.
var a: u32 = 3;
asm volatile (""
: [_] "=r,m" (a),
: [_] "r,m" (a),
: ""
);
}
test "sized integer/float in asm input" {
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_c and builtin.os.tag == .windows) return error.SkipZigTest; // MSVC doesn't support inline assembly
asm volatile (""
:
: [_] "m" (@as(usize, 3)),
: ""
);
asm volatile (""
:
: [_] "m" (@as(i15, -3)),
: ""
);
asm volatile (""
:
: [_] "m" (@as(u3, 3)),
: ""
);
asm volatile (""
:
: [_] "m" (@as(i3, 3)),
: ""
);
asm volatile (""
:
: [_] "m" (@as(u121, 3)),
: ""
);
asm volatile (""
:
: [_] "m" (@as(i121, 3)),
: ""
);
asm volatile (""
:
: [_] "m" (@as(f32, 3.17)),
: ""
);
asm volatile (""
:
: [_] "m" (@as(f64, 3.17)),
: ""
);
}
test "struct/array/union types as input values" {
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_c and builtin.os.tag == .windows) return error.SkipZigTest; // MSVC doesn't support inline assembly
asm volatile (""
:
: [_] "m" (@as([1]u32, undefined)),
); // fails
asm volatile (""
:
: [_] "m" (@as(struct { x: u32, y: u8 }, undefined)),
); // fails
asm volatile (""
:
: [_] "m" (@as(union { x: u32, y: u8 }, undefined)),
); // fails
}
extern fn this_is_my_alias() i32;
export fn derp() i32 {
return 1234;
}
test "rw constraint (x86_64)" {
if (builtin.target.cpu.arch != .x86_64 or builtin.zig_backend != .stage2_llvm)
return error.SkipZigTest;
var res: i32 = 5;
asm ("addl %[b], %[a]"
: [a] "+r" (res),
: [b] "r" (@as(i32, 13)),
: "flags"
);
try expectEqual(@as(i32, 18), res);
}
test "asm modifiers (AArch64)" {
if (builtin.target.cpu.arch != .aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_c and builtin.os.tag == .windows) return error.SkipZigTest; // MSVC doesn't support inline assembly
var x: u32 = 15;
const double = asm ("add %[ret:w], %[in:w], %[in:w]"
: [ret] "=r" (-> u32),
: [in] "r" (x),
);
try expectEqual(2 * x, double);
}
|
