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llvm: implement explicit Win64 and SysV calling conventions

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This commit is contained in:
Veikka Tuominen
2023-01-21 23:54:14 +02:00
parent a28fbf3132
commit aa626deadd
3 changed files with 211 additions and 164 deletions
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12
test/c_abi/cfuncs.c
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@@ -1015,3 +1015,15 @@ void __attribute__((stdcall)) stdcall_big_union(union BigUnion x) {
assert_or_panic(x.a.c == 3);
assert_or_panic(x.a.d == 4);
}
#ifdef __x86_64__
struct ByRef __attribute__((ms_abi)) c_explict_win64(struct ByRef in) {
in.val = 42;
return in;
}
struct ByRef __attribute__((sysv_abi)) c_explict_sys_v(struct ByRef in) {
in.val = 42;
return in;
}
#endif

16
test/c_abi/main.zig
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@@ -1190,3 +1190,19 @@ test "Stdcall ABI big union" {
};
stdcall_big_union(x);
}
extern fn c_explict_win64(ByRef) callconv(.Win64) ByRef;
test "explicit SysV calling convention" {
if (builtin.cpu.arch != .x86_64) return error.SkipZigTest;
const res = c_explict_win64(.{ .val = 1, .arr = undefined });
try expect(res.val == 42);
}
extern fn c_explict_sys_v(ByRef) callconv(.SysV) ByRef;
test "explicit Win64 calling convention" {
if (builtin.cpu.arch != .x86_64) return error.SkipZigTest;
const res = c_explict_sys_v(.{ .val = 1, .arr = undefined });
try expect(res.val == 42);
}