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added subsystem to builtin.zig #2462

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added subsystem to builtin.zig #2462

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31a4b15
added subsystem to builtin.zig
emekoi May 9, 2019
eda0a00
try to resolve TargetSubSystemAuto to actual subsystem
emekoi May 10, 2019
0d04348
set subsystem to null if not on windows or uefi
emekoi May 10, 2019
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49 changes: 49 additions & 0 deletions src/codegen.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -7849,6 +7849,28 @@ Buf *codegen_generate_builtin_source(CodeGen *g) {
//assert(EndianBig == 0);
//assert(EndianLittle == 1);
}
{
buf_appendf(contents,
"pub const SubSystem = enum {\n"
" Console,\n"
" Windows,\n"
" Posix,\n"
" Native,\n"
" EfiApplication,\n"
" EfiBootServiceDriver,\n"
" EfiRom,\n"
" EfiRuntimeDriver,\n"
"};\n\n");

assert(TargetSubsystemConsole == 1);
assert(TargetSubsystemWindows == 2);
assert(TargetSubsystemPosix == 3);
assert(TargetSubsystemNative == 4);
assert(TargetSubsystemEfiApplication == 5);
assert(TargetSubsystemEfiBootServiceDriver == 6);
assert(TargetSubsystemEfiRom == 7);
assert(TargetSubsystemEfiRuntimeDriver == 8);
}
{
const char *endian_str = g->is_big_endian ? "Endian.Big" : "Endian.Little";
buf_appendf(contents, "pub const endian = %s;\n", endian_str);
Expand All @@ -7865,6 +7887,32 @@ Buf *codegen_generate_builtin_source(CodeGen *g) {
buf_appendf(contents, "pub const valgrind_support = %s;\n", bool_to_str(want_valgrind_support(g)));
buf_appendf(contents, "pub const position_independent_code = %s;\n", bool_to_str(g->have_pic));

{
static const char* subsystem_strings[] = {
"Console",
"Windows",
"Posix",
"Native",
"EfiApplication",
"EfiBootServiceDriver",
"EfiRom",
"EfiRuntimeDriver",
};

if (g->zig_target->os != OsWindows || g->zig_target->os != OsUefi || g->have_dllmain_crt_startup || g->out_type == OutTypeLib) {
buf_appendf(contents, "pub const subsystem = null;\n");
} else if (g->subsystem == TargetSubsystemAuto) {
if (g->have_c_main || g->have_pub_main) {
buf_appendf(contents, "pub const subsystem = SubSystem.%s;\n", subsystem_strings[TargetSubsystemConsole - 1]);
} else if (g->have_winmain || g->have_winmain_crt_startup) {
buf_appendf(contents, "pub const subsystem = SubSystem.%s;\n", subsystem_strings[TargetSubsystemWindows - 1]);
}
} else {
buf_appendf(contents, "pub const subsystem = SubSystem.%s;\n", subsystem_strings[g->subsystem - 1]);
}

}

if (g->is_test_build) {
buf_appendf(contents,
"const TestFn = struct {\n"
Expand Down Expand Up @@ -7908,6 +7956,7 @@ static Error define_builtin_compile_vars(CodeGen *g) {
cache_bool(&cache_hash, g->have_err_ret_tracing);
cache_bool(&cache_hash, g->libc_link_lib != nullptr);
cache_bool(&cache_hash, g->valgrind_support);
cache_int(&cache_hash, g->subsystem - 1);

Buf digest = BUF_INIT;
buf_resize(&digest, 0);
Expand Down