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Merge pull request #2079 from Sahnvour/issue-2050

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Fixes c_ABI tests on windows
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Andrew Kelley 2019-03-20 00:11:11 -04:00 committed by GitHub
commit 2fdf69bc40
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5 changed files with 106 additions and 25 deletions
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38
src/analyze.cpp
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@ -6699,10 +6699,28 @@ Error file_fetch(CodeGen *g, Buf *resolved_path, Buf *contents) {
}
}
X64CABIClass type_c_abi_x86_64_class(CodeGen *g, ZigType *ty) {
size_t ty_size = type_size(g, ty);
if (get_codegen_ptr_type(ty) != nullptr)
return X64CABIClass_INTEGER;
static X64CABIClass type_windows_abi_x86_64_class(CodeGen *g, ZigType *ty, size_t ty_size) {
// https://docs.microsoft.com/en-gb/cpp/build/x64-calling-convention?view=vs-2017
switch (ty->id) {
case ZigTypeIdEnum:
case ZigTypeIdInt:
case ZigTypeIdBool:
return X64CABIClass_INTEGER;
case ZigTypeIdFloat:
case ZigTypeIdVector:
return X64CABIClass_SSE;
case ZigTypeIdStruct:
case ZigTypeIdUnion: {
if (ty_size <= 8)
return X64CABIClass_INTEGER;
return X64CABIClass_MEMORY;
}
default:
return X64CABIClass_Unknown;
}
}
static X64CABIClass type_system_V_abi_x86_64_class(CodeGen *g, ZigType *ty, size_t ty_size) {
switch (ty->id) {
case ZigTypeIdEnum:
case ZigTypeIdInt:
@ -6770,6 +6788,18 @@ X64CABIClass type_c_abi_x86_64_class(CodeGen *g, ZigType *ty) {
}
}
X64CABIClass type_c_abi_x86_64_class(CodeGen *g, ZigType *ty) {
const size_t ty_size = type_size(g, ty);
if (get_codegen_ptr_type(ty) != nullptr)
return X64CABIClass_INTEGER;
if (g->zig_target->os == OsWindows || g->zig_target->os == OsUefi) {
return type_windows_abi_x86_64_class(g, ty, ty_size);
} else {
return type_system_V_abi_x86_64_class(g, ty, ty_size);
}
}
// NOTE this does not depend on x86_64
bool type_is_c_abi_int(CodeGen *g, ZigType *ty) {
return (ty->id == ZigTypeIdInt ||

45
std/debug.zig
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@ -372,18 +372,20 @@ fn printSourceAtAddressWindows(di: *DebugInfo, out_stream: var, relocated_addres
const frag_vaddr_start = coff_section.header.virtual_address + line_hdr.RelocOffset;
const frag_vaddr_end = frag_vaddr_start + line_hdr.CodeSize;
// There is an unknown number of LineBlockFragmentHeaders (and their accompanying line and column records)
// from now on. We will iterate through them, and eventually find a LineInfo that we're interested in,
// breaking out to :subsections. If not, we will make sure to not read anything outside of this subsection.
const subsection_end_index = sect_offset + subsect_hdr.Length;
while (line_index < subsection_end_index) {
const block_hdr = @ptrCast(*pdb.LineBlockFragmentHeader, &subsect_info[line_index]);
line_index += @sizeOf(pdb.LineBlockFragmentHeader);
const start_line_index = line_index;
if (relative_address >= frag_vaddr_start and relative_address < frag_vaddr_end) {
// There is an unknown number of LineBlockFragmentHeaders (and their accompanying line and column records)
// from now on. We will iterate through them, and eventually find a LineInfo that we're interested in,
// breaking out to :subsections. If not, we will make sure to not read anything outside of this subsection.
const has_column = line_hdr.Flags.LF_HaveColumns;
const subsection_end_index = sect_offset + subsect_hdr.Length;
while (line_index < subsection_end_index) {
const block_hdr = @ptrCast(*pdb.LineBlockFragmentHeader, &subsect_info[line_index]);
line_index += @sizeOf(pdb.LineBlockFragmentHeader);
const start_line_index = line_index;
const has_column = line_hdr.Flags.LF_HaveColumns;
if (relative_address >= frag_vaddr_start and relative_address < frag_vaddr_end) {
// All line entries are stored inside their line block by ascending start address.
// Heuristic: we want to find the last line entry that has a vaddr_start <= relative_address.
// This is done with a simple linear search.
@ -427,11 +429,11 @@ fn printSourceAtAddressWindows(di: *DebugInfo, out_stream: var, relocated_addres
};
}
}
}
// Checking that we are not reading garbage after the (possibly) multiple block fragments.
if (line_index != subsection_end_index) {
return error.InvalidDebugInfo;
// Checking that we are not reading garbage after the (possibly) multiple block fragments.
if (line_index != subsection_end_index) {
return error.InvalidDebugInfo;
}
}
},
else => {},
@ -476,6 +478,11 @@ fn printSourceAtAddressWindows(di: *DebugInfo, out_stream: var, relocated_addres
}
} else |err| switch (err) {
error.EndOfFile => {},
error.FileNotFound => {
setTtyColor(TtyColor.Dim);
try out_stream.write("file not found\n\n");
setTtyColor(TtyColor.White);
},
else => return err,
}
} else {
@ -565,11 +572,12 @@ fn populateModule(di: *DebugInfo, mod: *Module) !void {
return;
const allocator = getDebugInfoAllocator();
if (mod.mod_info.C11ByteSize != 0)
// At most one can be non-zero.
if (mod.mod_info.C11ByteSize != 0 and mod.mod_info.C13ByteSize != 0)
return error.InvalidDebugInfo;
if (mod.mod_info.C13ByteSize == 0)
return error.MissingDebugInfo;
return;
const modi = di.pdb.getStreamById(mod.mod_info.ModuleSymStream) orelse return error.MissingDebugInfo;
@ -881,8 +889,9 @@ fn openSelfDebugInfoWindows(allocator: *mem.Allocator) !DebugInfo {
const obj_file_name = try dbi.readNullTermString(allocator);
this_record_len += obj_file_name.len + 1;
const march_forward_bytes = this_record_len % 4;
if (march_forward_bytes != 0) {
if (this_record_len % 4 != 0) {
const round_to_next_4 = (this_record_len | 0x3) + 1;
const march_forward_bytes = round_to_next_4 - this_record_len;
try dbi.seekForward(march_forward_bytes);
this_record_len += march_forward_bytes;
}

4
test/build_examples.zig
View File

@ -25,9 +25,7 @@ pub fn addCases(cases: *tests.BuildExamplesContext) void {
cases.addBuildFile("test/standalone/load_dynamic_library/build.zig");
}
if (!is_windows // TODO support compiling C files on windows with zig build system
and builtin.arch == builtin.Arch.x86_64 // TODO add C ABI support for other architectures
) {
if (builtin.arch == builtin.Arch.x86_64) { // TODO add C ABI support for other architectures
cases.addBuildFile("test/stage1/c_abi/build.zig");
}
}

20
test/stage1/c_abi/cfuncs.c
View File

@ -18,9 +18,11 @@ void zig_i8(int8_t);
void zig_i16(int16_t);
void zig_i32(int32_t);
void zig_i64(int64_t);
void zig_five_integers(int32_t, int32_t, int32_t, int32_t, int32_t);
void zig_f32(float);
void zig_f64(double);
void zig_five_floats(float, float, float, float, float);
void zig_ptr(void *);
@ -71,9 +73,11 @@ void run_c_tests(void) {
zig_i16(-2);
zig_i32(-3);
zig_i64(-4);
zig_five_integers(12, 34, 56, 78, 90);
zig_f32(12.34f);
zig_f64(56.78);
zig_five_floats(1.0f, 2.0f, 3.0f, 4.0f, 5.0f);
zig_ptr((void*)0xdeadbeefL);
@ -156,6 +160,22 @@ void c_bool(bool x) {
assert_or_panic(x);
}
void c_five_integers(int32_t a, int32_t b, int32_t c, int32_t d, int32_t e) {
assert_or_panic(a == 12);
assert_or_panic(b == 34);
assert_or_panic(c == 56);
assert_or_panic(d == 78);
assert_or_panic(e == 90);
}
void c_five_floats(float a, float b, float c, float d, float e) {
assert_or_panic(a == 1.0);
assert_or_panic(b == 2.0);
assert_or_panic(c == 3.0);
assert_or_panic(d == 4.0);
assert_or_panic(e == 5.0);
}
void c_array(uint8_t x[10]) {
assert_or_panic(x[0] == '1');
assert_or_panic(x[1] == '2');

24
test/stage1/c_abi/main.zig
View File

@ -20,6 +20,17 @@ extern fn c_i16(i16) void;
extern fn c_i32(i32) void;
extern fn c_i64(i64) void;
// On windows x64, the first 4 are passed via registers, others on the stack.
extern fn c_five_integers(i32, i32, i32, i32, i32) void;
export fn zig_five_integers(a: i32, b: i32, c: i32, d: i32, e: i32) void {
expect(a == 12);
expect(b == 34);
expect(c == 56);
expect(d == 78);
expect(e == 90);
}
test "C ABI integers" {
c_u8(0xff);
c_u16(0xfffe);
@ -30,6 +41,7 @@ test "C ABI integers" {
c_i16(-2);
c_i32(-3);
c_i64(-4);
c_five_integers(12, 34, 56, 78, 90);
}
export fn zig_u8(x: u8) void {
@ -60,9 +72,21 @@ export fn zig_i64(x: i64) void {
extern fn c_f32(f32) void;
extern fn c_f64(f64) void;
// On windows x64, the first 4 are passed via registers, others on the stack.
extern fn c_five_floats(f32, f32, f32, f32, f32) void;
export fn zig_five_floats(a: f32, b: f32, c: f32, d: f32, e: f32) void {
expect(a == 1.0);
expect(b == 2.0);
expect(c == 3.0);
expect(d == 4.0);
expect(e == 5.0);
}
test "C ABI floats" {
c_f32(12.34);
c_f64(56.78);
c_five_floats(1.0, 2.0, 3.0, 4.0, 5.0);
}
export fn zig_f32(x: f32) void {