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zig build system: add setLinkerScript and setTarget

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* See #204 - zig build system
 * allow builtin types Os, Environ, Arch to be used at runtime.
   they have zero_bits=false and debug info now.
 * Eradicate use of `@alloca` in std for syscalls. See #225
 * add `std.io.writeFile`
 * `std.debug.panic` adds a newline to format
This commit is contained in:
Andrew Kelley
2017-04-03 04:58:19 -04:00
parent a1363b5227
commit c400cb429a
10 changed files with 374 additions and 148 deletions
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53
src/codegen.cpp
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@@ -3802,6 +3802,35 @@ static const GlobalLinkageValue global_linkage_values[] = {
{GlobalLinkageIdLinkOnce, "LinkOnce"},
};
static void init_enum_debug_info(CodeGen *g, TypeTableEntry *enum_type) {
uint32_t field_count = enum_type->data.enumeration.src_field_count;
TypeTableEntry *tag_type_entry = get_smallest_unsigned_int_type(g, field_count);
enum_type->data.enumeration.tag_type = tag_type_entry;
ZigLLVMDIEnumerator **di_enumerators = allocate<ZigLLVMDIEnumerator*>(field_count);
for (uint32_t i = 0; i < field_count; i += 1) {
TypeEnumField *field = &enum_type->data.enumeration.fields[i];
di_enumerators[i] = ZigLLVMCreateDebugEnumerator(g->dbuilder, buf_ptr(field->name), i);
}
// create debug type for tag
uint64_t tag_debug_size_in_bits = 8*LLVMStoreSizeOfType(g->target_data_ref, tag_type_entry->type_ref);
uint64_t tag_debug_align_in_bits = 8*LLVMABISizeOfType(g->target_data_ref, tag_type_entry->type_ref);
enum_type->di_type = ZigLLVMCreateDebugEnumerationType(g->dbuilder,
nullptr, buf_ptr(&enum_type->name),
nullptr, 0,
tag_debug_size_in_bits,
tag_debug_align_in_bits,
di_enumerators, field_count,
tag_type_entry->di_type, "");
enum_type->type_ref = tag_type_entry->type_ref;
enum_type->data.enumeration.complete = true;
enum_type->data.enumeration.zero_bits_known = true;
}
static void define_builtin_types(CodeGen *g) {
{
// if this type is anywhere in the AST, we should never hit codegen.
@@ -4022,7 +4051,6 @@ static void define_builtin_types(CodeGen *g) {
{
TypeTableEntry *entry = new_type_table_entry(TypeTableEntryIdEnum);
entry->zero_bits = true; // only allowed at compile time
buf_init_from_str(&entry->name, "Os");
uint32_t field_count = target_os_count();
entry->data.enumeration.src_field_count = field_count;
@@ -4038,11 +4066,8 @@ static void define_builtin_types(CodeGen *g) {
g->target_os_index = i;
}
}
entry->data.enumeration.complete = true;
entry->data.enumeration.zero_bits_known = true;
TypeTableEntry *tag_type_entry = get_smallest_unsigned_int_type(g, field_count);
entry->data.enumeration.tag_type = tag_type_entry;
init_enum_debug_info(g, entry);
g->builtin_types.entry_os_enum = entry;
g->primitive_type_table.put(&entry->name, entry);
@@ -4050,7 +4075,6 @@ static void define_builtin_types(CodeGen *g) {
{
TypeTableEntry *entry = new_type_table_entry(TypeTableEntryIdEnum);
entry->zero_bits = true; // only allowed at compile time
buf_init_from_str(&entry->name, "Arch");
uint32_t field_count = target_arch_count();
entry->data.enumeration.src_field_count = field_count;
@@ -4072,11 +4096,8 @@ static void define_builtin_types(CodeGen *g) {
g->target_arch_index = i;
}
}
entry->data.enumeration.complete = true;
entry->data.enumeration.zero_bits_known = true;
TypeTableEntry *tag_type_entry = get_smallest_unsigned_int_type(g, field_count);
entry->data.enumeration.tag_type = tag_type_entry;
init_enum_debug_info(g, entry);
g->builtin_types.entry_arch_enum = entry;
g->primitive_type_table.put(&entry->name, entry);
@@ -4084,7 +4105,6 @@ static void define_builtin_types(CodeGen *g) {
{
TypeTableEntry *entry = new_type_table_entry(TypeTableEntryIdEnum);
entry->zero_bits = true; // only allowed at compile time
buf_init_from_str(&entry->name, "Environ");
uint32_t field_count = target_environ_count();
entry->data.enumeration.src_field_count = field_count;
@@ -4100,11 +4120,8 @@ static void define_builtin_types(CodeGen *g) {
g->target_environ_index = i;
}
}
entry->data.enumeration.complete = true;
entry->data.enumeration.zero_bits_known = true;
TypeTableEntry *tag_type_entry = get_smallest_unsigned_int_type(g, field_count);
entry->data.enumeration.tag_type = tag_type_entry;
init_enum_debug_info(g, entry);
g->builtin_types.entry_environ_enum = entry;
g->primitive_type_table.put(&entry->name, entry);
@@ -4112,7 +4129,6 @@ static void define_builtin_types(CodeGen *g) {
{
TypeTableEntry *entry = new_type_table_entry(TypeTableEntryIdEnum);
entry->zero_bits = true; // only allowed at compile time
buf_init_from_str(&entry->name, "ObjectFormat");
uint32_t field_count = target_oformat_count();
entry->data.enumeration.src_field_count = field_count;
@@ -4128,11 +4144,8 @@ static void define_builtin_types(CodeGen *g) {
g->target_oformat_index = i;
}
}
entry->data.enumeration.complete = true;
entry->data.enumeration.zero_bits_known = true;
TypeTableEntry *tag_type_entry = get_smallest_unsigned_int_type(g, field_count);
entry->data.enumeration.tag_type = tag_type_entry;
init_enum_debug_info(g, entry);
g->builtin_types.entry_oformat_enum = entry;
g->primitive_type_table.put(&entry->name, entry);