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windows i386 support

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This commit is contained in:
Jon Lipstate
2025-08-29 12:41:38 -07:00
parent f926c1861f
commit 231ce2da59
6 changed files with 50 additions and 8 deletions
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6
src/linker.cpp
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@@ -281,7 +281,11 @@ try_cross_linking:;
link_settings = gb_string_append_fmt(link_settings, " /NOENTRY");
}
} else {
link_settings = gb_string_append_fmt(link_settings, " /ENTRY:mainCRTStartup");
// For i386 with CRT, libcmt provides the entry point
// For other cases or no_crt, we need to specify the entry point
if (!(build_context.metrics.arch == TargetArch_i386 && !build_context.no_crt)) {
link_settings = gb_string_append_fmt(link_settings, " /ENTRY:mainCRTStartup");
}
}
if (build_context.build_paths[BuildPath_Symbols].name != "") {

10
src/llvm_backend.cpp
View File

@@ -2686,8 +2686,15 @@ gb_internal lbProcedure *lb_create_main_procedure(lbModule *m, lbProcedure *star
params->Tuple.variables[1] = alloc_entity_param(nullptr, make_token_ident("fdwReason"), t_u32, false, true);
params->Tuple.variables[2] = alloc_entity_param(nullptr, make_token_ident("lpReserved"), t_rawptr, false, true);
call_cleanup = false;
} else if (build_context.metrics.os == TargetOs_windows && (build_context.metrics.arch == TargetArch_i386 || build_context.no_crt)) {
} else if (build_context.metrics.os == TargetOs_windows && build_context.no_crt) {
name = str_lit("mainCRTStartup");
} else if (build_context.metrics.os == TargetOs_windows && build_context.metrics.arch == TargetArch_i386 && !build_context.no_crt) {
// Windows i386 with CRT: libcmt expects _main (main with underscore prefix)
name = str_lit("main");
has_args = true;
slice_init(&params->Tuple.variables, permanent_allocator(), 2);
params->Tuple.variables[0] = alloc_entity_param(nullptr, make_token_ident("argc"), t_i32, false, true);
params->Tuple.variables[1] = alloc_entity_param(nullptr, make_token_ident("argv"), t_ptr_cstring, false, true);
} else if (is_arch_wasm()) {
name = str_lit("_start");
call_cleanup = false;
@@ -3162,6 +3169,7 @@ gb_internal bool lb_generate_code(lbGenerator *gen) {
String link_name = e->Procedure.link_name;
if (e->pkg->kind == Package_Runtime) {
if (link_name == "main" ||
link_name == "_main" ||
link_name == "DllMain" ||
link_name == "WinMain" ||
link_name == "wWinMain" ||

5
src/main.cpp
View File

@@ -3617,6 +3617,11 @@ int main(int arg_count, char const **arg_ptr) {
// print_usage_line(0, "%.*s 32-bit is not yet supported for this platform", LIT(args[0]));
// return 1;
// }
// Warn about Windows i386 thread-local storage limitations
if (build_context.metrics.arch == TargetArch_i386 && build_context.metrics.os == TargetOs_windows) {
gb_printf_err("Warning: Thread-local storage is disabled on Windows i386.\n");
}
// Check chosen microarchitecture. If not found or ?, print list.
bool print_microarch_list = true;