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enable debugging infrastructure when using C backend

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Thanks to @jacobly0's recent enhancements to the C backend, this stuff
works now.
This commit is contained in:
Andrew Kelley 2023-04-24 19:14:54 -07:00
parent afbcad9939
commit 396bd51c48
4 changed files with 9 additions and 17 deletions
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3
lib/std/builtin.zig
View file

@ -868,8 +868,7 @@ pub fn default_panic(msg: []const u8, error_return_trace: ?*StackTrace, ret_addr
// For backends that cannot handle the language features depended on by the
// default panic handler, we have a simpler panic handler:
if (builtin.zig_backend == .stage2_c or
builtin.zig_backend == .stage2_wasm or
if (builtin.zig_backend == .stage2_wasm or
builtin.zig_backend == .stage2_arm or
builtin.zig_backend == .stage2_aarch64 or
builtin.zig_backend == .stage2_x86_64 or

14
lib/std/debug.zig
View file

@ -1360,13 +1360,7 @@ pub const DebugInfo = struct {
}
pub fn getModuleForAddress(self: *DebugInfo, address: usize) !*ModuleDebugInfo {
if (builtin.zig_backend == .stage2_c) {
return @as(error{
InvalidDebugInfo,
MissingDebugInfo,
UnsupportedBackend,
}, error.UnsupportedBackend);
} else if (comptime builtin.target.isDarwin()) {
if (comptime builtin.target.isDarwin()) {
return self.lookupModuleDyld(address);
} else if (native_os == .windows) {
return self.lookupModuleWin32(address);
@ -1380,9 +1374,7 @@ pub const DebugInfo = struct {
}
pub fn getModuleNameForAddress(self: *DebugInfo, address: usize) ?[]const u8 {
if (builtin.zig_backend == .stage2_c) {
return null;
} else if (comptime builtin.target.isDarwin()) {
if (comptime builtin.target.isDarwin()) {
return null;
} else if (native_os == .windows) {
return self.lookupModuleNameWin32(address);
@ -2191,8 +2183,6 @@ pub fn dumpStackPointerAddr(prefix: []const u8) void {
}
test "manage resources correctly" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // error.UnsupportedBackend
if (builtin.os.tag == .wasi) return error.SkipZigTest;
if (builtin.os.tag == .windows and builtin.cpu.arch == .x86_64) {

6
lib/std/os.zig
View file

@ -5371,8 +5371,10 @@ pub fn dl_iterate_phdr(
) Error!void {
const Context = @TypeOf(context);
if (builtin.object_format != .elf)
@compileError("dl_iterate_phdr is not available for this target");
switch (builtin.object_format) {
.elf, .c => {},
else => @compileError("dl_iterate_phdr is not available for this target"),
}
if (builtin.link_libc) {
switch (system.dl_iterate_phdr(struct {

3
src/Module.zig
View file

@ -6629,7 +6629,8 @@ pub fn backendSupportsFeature(mod: Module, feature: Feature) bool {
mod.comp.bin_file.options.use_llvm,
.panic_unwrap_error => mod.comp.bin_file.options.target.ofmt == .c or
mod.comp.bin_file.options.use_llvm,
.safety_check_formatted => mod.comp.bin_file.options.use_llvm,
.safety_check_formatted => mod.comp.bin_file.options.target.ofmt == .c or
mod.comp.bin_file.options.use_llvm,
.error_return_trace => mod.comp.bin_file.options.use_llvm,
.is_named_enum_value => mod.comp.bin_file.options.use_llvm,
.error_set_has_value => mod.comp.bin_file.options.use_llvm or mod.comp.bin_file.options.target.isWasm(),