829 lines
28 KiB
Rust
829 lines
28 KiB
Rust
import std::map;
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import std::map::hashmap;
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import lib::llvm::llvm;
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import lib::llvm::ValueRef;
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import trans::common::*;
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import trans::base;
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import trans::build::B;
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import middle::ty;
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import syntax::{ast, codemap, ast_util, ast_map};
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import codemap::span;
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import ast::ty;
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import pat_util::*;
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import util::ppaux::ty_to_str;
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import driver::session::session;
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export create_local_var;
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export create_function;
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export create_arg;
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export update_source_pos;
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export debug_ctxt;
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export mk_ctxt;
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const LLVMDebugVersion: int = (9 << 16);
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const DW_LANG_RUST: int = 0x9000;
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const DW_VIRTUALITY_none: int = 0;
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const CompileUnitTag: int = 17;
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const FileDescriptorTag: int = 41;
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const SubprogramTag: int = 46;
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const SubroutineTag: int = 21;
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const BasicTypeDescriptorTag: int = 36;
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const AutoVariableTag: int = 256;
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const ArgVariableTag: int = 257;
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const ReturnVariableTag: int = 258;
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const LexicalBlockTag: int = 11;
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const PointerTypeTag: int = 15;
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const StructureTypeTag: int = 19;
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const MemberTag: int = 13;
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const ArrayTypeTag: int = 1;
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const SubrangeTag: int = 33;
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const DW_ATE_boolean: int = 0x02;
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const DW_ATE_float: int = 0x04;
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const DW_ATE_signed: int = 0x05;
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const DW_ATE_signed_char: int = 0x06;
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const DW_ATE_unsigned: int = 0x07;
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const DW_ATE_unsigned_char: int = 0x08;
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fn llstr(s: ~str) -> ValueRef {
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str::as_c_str(s, |sbuf| {
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llvm::LLVMMDString(sbuf, str::len(s) as libc::c_uint)
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})
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}
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fn lltag(lltag: int) -> ValueRef {
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lli32(LLVMDebugVersion | lltag)
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}
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fn lli32(val: int) -> ValueRef {
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C_i32(val as i32)
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}
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fn lli64(val: int) -> ValueRef {
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C_i64(val as i64)
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}
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fn lli1(bval: bool) -> ValueRef {
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C_bool(bval)
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}
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fn llmdnode(elems: ~[ValueRef]) -> ValueRef unsafe {
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llvm::LLVMMDNode(vec::unsafe::to_ptr(elems),
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vec::len(elems) as libc::c_uint)
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}
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fn llunused() -> ValueRef {
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lli32(0x0)
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}
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fn llnull() -> ValueRef unsafe {
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unsafe::reinterpret_cast(ptr::null::<ValueRef>())
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}
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fn add_named_metadata(cx: @crate_ctxt, name: ~str, val: ValueRef) {
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str::as_c_str(name, |sbuf| {
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llvm::LLVMAddNamedMetadataOperand(cx.llmod, sbuf, val)
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})
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}
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////////////////
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type debug_ctxt = {
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llmetadata: metadata_cache,
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names: namegen,
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crate_file: ~str
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};
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fn mk_ctxt(crate: ~str) -> debug_ctxt {
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{llmetadata: map::int_hash(),
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names: new_namegen(),
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crate_file: crate}
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}
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fn update_cache(cache: metadata_cache, mdtag: int, val: debug_metadata) {
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let existing = if cache.contains_key(mdtag) {
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cache.get(mdtag)
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} else {
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~[]
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};
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cache.insert(mdtag, vec::append_one(existing, val));
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}
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type metadata<T> = {node: ValueRef, data: T};
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type file_md = {path: ~str};
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type compile_unit_md = {name: ~str};
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type subprogram_md = {id: ast::node_id};
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type local_var_md = {id: ast::node_id};
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type tydesc_md = {hash: uint};
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type block_md = {start: codemap::loc, end: codemap::loc};
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type argument_md = {id: ast::node_id};
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type retval_md = {id: ast::node_id};
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type metadata_cache = hashmap<int, ~[debug_metadata]>;
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enum debug_metadata {
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file_metadata(@metadata<file_md>),
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compile_unit_metadata(@metadata<compile_unit_md>),
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subprogram_metadata(@metadata<subprogram_md>),
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local_var_metadata(@metadata<local_var_md>),
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tydesc_metadata(@metadata<tydesc_md>),
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block_metadata(@metadata<block_md>),
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argument_metadata(@metadata<argument_md>),
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retval_metadata(@metadata<retval_md>),
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}
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fn cast_safely<T: copy, U>(val: T) -> U unsafe {
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let val2 = val;
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ret unsafe::transmute(val2);
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}
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fn md_from_metadata<T>(val: debug_metadata) -> T unsafe {
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alt val {
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file_metadata(md) { cast_safely(md) }
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compile_unit_metadata(md) { cast_safely(md) }
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subprogram_metadata(md) { cast_safely(md) }
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local_var_metadata(md) { cast_safely(md) }
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tydesc_metadata(md) { cast_safely(md) }
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block_metadata(md) { cast_safely(md) }
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argument_metadata(md) { cast_safely(md) }
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retval_metadata(md) { cast_safely(md) }
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}
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}
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fn cached_metadata<T: copy>(cache: metadata_cache, mdtag: int,
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eq: fn(md: T) -> bool) -> option<T> unsafe {
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if cache.contains_key(mdtag) {
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let items = cache.get(mdtag);
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for items.each |item| {
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let md: T = md_from_metadata::<T>(item);
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if eq(md) {
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ret option::some(md);
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}
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}
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}
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ret option::none;
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}
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fn create_compile_unit(cx: @crate_ctxt)
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-> @metadata<compile_unit_md> unsafe {
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let cache = get_cache(cx);
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let crate_name = option::get(cx.dbg_cx).crate_file;
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let tg = CompileUnitTag;
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alt cached_metadata::<@metadata<compile_unit_md>>(cache, tg,
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|md| md.data.name == crate_name) {
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option::some(md) { ret md; }
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option::none {}
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}
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let (_, work_dir) = get_file_path_and_dir(cx.sess.working_dir,
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crate_name);
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let unit_metadata = ~[lltag(tg),
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llunused(),
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lli32(DW_LANG_RUST),
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llstr(crate_name),
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llstr(work_dir),
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llstr(#env["CFG_VERSION"]),
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lli1(true), // deprecated: main compile unit
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lli1(cx.sess.opts.optimize != 0u),
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llstr(~""), // flags (???)
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lli32(0) // runtime version (???)
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];
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let unit_node = llmdnode(unit_metadata);
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add_named_metadata(cx, ~"llvm.dbg.cu", unit_node);
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let mdval = @{node: unit_node, data: {name: crate_name}};
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update_cache(cache, tg, compile_unit_metadata(mdval));
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ret mdval;
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}
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fn get_cache(cx: @crate_ctxt) -> metadata_cache {
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option::get(cx.dbg_cx).llmetadata
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}
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fn get_file_path_and_dir(work_dir: ~str, full_path: ~str) -> (~str, ~str) {
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(if str::starts_with(full_path, work_dir) {
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str::slice(full_path, str::len(work_dir) + 1u,
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str::len(full_path))
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} else {
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full_path
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}, work_dir)
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}
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fn create_file(cx: @crate_ctxt, full_path: ~str) -> @metadata<file_md> {
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let cache = get_cache(cx);;
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let tg = FileDescriptorTag;
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alt cached_metadata::<@metadata<file_md>>(
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cache, tg, |md| md.data.path == full_path) {
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option::some(md) { ret md; }
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option::none {}
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}
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let (file_path, work_dir) = get_file_path_and_dir(cx.sess.working_dir,
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full_path);
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let unit_node = create_compile_unit(cx).node;
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let file_md = ~[lltag(tg),
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llstr(file_path),
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llstr(work_dir),
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unit_node];
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let val = llmdnode(file_md);
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let mdval = @{node: val, data: {path: full_path}};
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update_cache(cache, tg, file_metadata(mdval));
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ret mdval;
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}
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fn line_from_span(cm: codemap::codemap, sp: span) -> uint {
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codemap::lookup_char_pos(cm, sp.lo).line
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}
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fn create_block(cx: block) -> @metadata<block_md> {
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let cache = get_cache(cx.ccx());
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let mut cx = cx;
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while option::is_none(cx.node_info) {
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alt cx.parent {
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some(b) { cx = b; }
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none { fail; }
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}
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}
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let sp = option::get(cx.node_info).span;
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let start = codemap::lookup_char_pos(cx.sess().codemap, sp.lo);
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let fname = start.file.name;
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let end = codemap::lookup_char_pos(cx.sess().codemap, sp.hi);
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let tg = LexicalBlockTag;
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/*alt cached_metadata::<@metadata<block_md>>(
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cache, tg,
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{|md| start == md.data.start && end == md.data.end}) {
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option::some(md) { ret md; }
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option::none {}
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}*/
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let parent = alt cx.parent {
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none { create_function(cx.fcx).node }
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some(bcx) { create_block(bcx).node }
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};
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let file_node = create_file(cx.ccx(), fname);
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let unique_id = alt cache.find(LexicalBlockTag) {
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option::some(v) { vec::len(v) as int }
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option::none { 0 }
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};
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let lldata = ~[lltag(tg),
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parent,
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lli32(start.line as int),
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lli32(start.col as int),
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file_node.node,
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lli32(unique_id)
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];
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let val = llmdnode(lldata);
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let mdval = @{node: val, data: {start: start, end: end}};
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//update_cache(cache, tg, block_metadata(mdval));
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ret mdval;
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}
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fn size_and_align_of(cx: @crate_ctxt, t: ty::t) -> (int, int) {
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let llty = type_of::type_of(cx, t);
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(shape::llsize_of_real(cx, llty) as int,
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shape::llalign_of_pref(cx, llty) as int)
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}
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fn create_basic_type(cx: @crate_ctxt, t: ty::t, ty: ast::prim_ty, span: span)
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-> @metadata<tydesc_md> {
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let cache = get_cache(cx);
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let tg = BasicTypeDescriptorTag;
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alt cached_metadata::<@metadata<tydesc_md>>(
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cache, tg, |md| ty::type_id(t) == md.data.hash) {
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option::some(md) { ret md; }
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option::none {}
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}
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let (name, encoding) = alt check ty {
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ast::ty_bool {(~"bool", DW_ATE_boolean)}
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ast::ty_int(m) { alt m {
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ast::ty_char {(~"char", DW_ATE_unsigned)}
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ast::ty_i {(~"int", DW_ATE_signed)}
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ast::ty_i8 {(~"i8", DW_ATE_signed_char)}
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ast::ty_i16 {(~"i16", DW_ATE_signed)}
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ast::ty_i32 {(~"i32", DW_ATE_signed)}
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ast::ty_i64 {(~"i64", DW_ATE_signed)}
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}}
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ast::ty_uint(m) { alt m {
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ast::ty_u {(~"uint", DW_ATE_unsigned)}
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ast::ty_u8 {(~"u8", DW_ATE_unsigned_char)}
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ast::ty_u16 {(~"u16", DW_ATE_unsigned)}
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ast::ty_u32 {(~"u32", DW_ATE_unsigned)}
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ast::ty_u64 {(~"u64", DW_ATE_unsigned)}
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}}
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ast::ty_float(m) { alt m {
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ast::ty_f {(~"float", DW_ATE_float)}
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ast::ty_f32 {(~"f32", DW_ATE_float)}
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ast::ty_f64 {(~"f64", DW_ATE_float)}
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}}
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};
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let fname = filename_from_span(cx, span);
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let file_node = create_file(cx, fname);
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let cu_node = create_compile_unit(cx);
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let (size, align) = size_and_align_of(cx, t);
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let lldata = ~[lltag(tg),
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cu_node.node,
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llstr(name),
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file_node.node,
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lli32(0), //XXX source line
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lli64(size * 8), // size in bits
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lli64(align * 8), // alignment in bits
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lli64(0), //XXX offset?
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lli32(0), //XXX flags?
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lli32(encoding)];
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let llnode = llmdnode(lldata);
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let mdval = @{node: llnode, data: {hash: ty::type_id(t)}};
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update_cache(cache, tg, tydesc_metadata(mdval));
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add_named_metadata(cx, ~"llvm.dbg.ty", llnode);
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ret mdval;
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}
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fn create_pointer_type(cx: @crate_ctxt, t: ty::t, span: span,
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pointee: @metadata<tydesc_md>)
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-> @metadata<tydesc_md> {
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let tg = PointerTypeTag;
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/*let cache = cx.llmetadata;
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alt cached_metadata::<@metadata<tydesc_md>>(
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cache, tg, {|md| ty::hash_ty(t) == ty::hash_ty(md.data.hash)}) {
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option::some(md) { ret md; }
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option::none {}
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}*/
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let (size, align) = size_and_align_of(cx, t);
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let fname = filename_from_span(cx, span);
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let file_node = create_file(cx, fname);
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//let cu_node = create_compile_unit(cx, fname);
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let llnode = create_derived_type(tg, file_node.node, ~"", 0, size * 8,
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align * 8, 0, pointee.node);
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let mdval = @{node: llnode, data: {hash: ty::type_id(t)}};
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//update_cache(cache, tg, tydesc_metadata(mdval));
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add_named_metadata(cx, ~"llvm.dbg.ty", llnode);
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ret mdval;
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}
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type struct_ctxt = {
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file: ValueRef,
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name: ~str,
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line: int,
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mut members: ~[ValueRef],
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mut total_size: int,
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align: int
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};
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fn finish_structure(cx: @struct_ctxt) -> ValueRef {
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ret create_composite_type(StructureTypeTag, cx.name, cx.file, cx.line,
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cx.total_size, cx.align, 0, option::none,
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option::some(cx.members));
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}
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fn create_structure(file: @metadata<file_md>, name: ~str, line: int)
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-> @struct_ctxt {
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let cx = @{file: file.node,
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name: name,
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line: line,
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mut members: ~[],
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mut total_size: 0,
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align: 64 //XXX different alignment per arch?
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};
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ret cx;
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}
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fn create_derived_type(type_tag: int, file: ValueRef, name: ~str, line: int,
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size: int, align: int, offset: int, ty: ValueRef)
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-> ValueRef {
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let lldata = ~[lltag(type_tag),
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file,
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llstr(name),
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file,
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lli32(line),
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lli64(size),
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lli64(align),
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lli64(offset),
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lli32(0),
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ty];
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ret llmdnode(lldata);
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}
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fn add_member(cx: @struct_ctxt, name: ~str, line: int, size: int, align: int,
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ty: ValueRef) {
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vec::push(cx.members, create_derived_type(MemberTag, cx.file, name, line,
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size * 8, align * 8, cx.total_size,
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ty));
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cx.total_size += size * 8;
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}
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fn create_record(cx: @crate_ctxt, t: ty::t, fields: ~[ast::ty_field],
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span: span) -> @metadata<tydesc_md> {
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let fname = filename_from_span(cx, span);
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let file_node = create_file(cx, fname);
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let scx = create_structure(file_node,
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option::get(cx.dbg_cx).names(~"rec"),
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line_from_span(cx.sess.codemap,
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span) as int);
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for fields.each |field| {
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let field_t = ty::get_field(t, field.node.ident).mt.ty;
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let ty_md = create_ty(cx, field_t, field.node.mt.ty);
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let (size, align) = size_and_align_of(cx, field_t);
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add_member(scx, *field.node.ident,
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line_from_span(cx.sess.codemap, field.span) as int,
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size as int, align as int, ty_md.node);
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}
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let mdval = @{node: finish_structure(scx), data:{hash: ty::type_id(t)}};
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ret mdval;
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}
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fn create_boxed_type(cx: @crate_ctxt, outer: ty::t, _inner: ty::t,
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span: span, boxed: @metadata<tydesc_md>)
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-> @metadata<tydesc_md> {
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//let tg = StructureTypeTag;
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/*let cache = cx.llmetadata;
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alt cached_metadata::<@metadata<tydesc_md>>(
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cache, tg, {|md| ty::hash_ty(outer) == ty::hash_ty(md.data.hash)}) {
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option::some(md) { ret md; }
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option::none {}
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}*/
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let fname = filename_from_span(cx, span);
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let file_node = create_file(cx, fname);
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//let cu_node = create_compile_unit_metadata(cx, fname);
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let uint_t = ty::mk_uint(cx.tcx);
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let refcount_type = create_basic_type(cx, uint_t,
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ast::ty_uint(ast::ty_u), span);
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let scx = create_structure(file_node, ty_to_str(cx.tcx, outer), 0);
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add_member(scx, ~"refcnt", 0, sys::size_of::<uint>() as int,
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sys::min_align_of::<uint>() as int, refcount_type.node);
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add_member(scx, ~"boxed", 0, 8, //XXX member_size_and_align(??)
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8, //XXX just a guess
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boxed.node);
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let llnode = finish_structure(scx);
|
|
let mdval = @{node: llnode, data: {hash: ty::type_id(outer)}};
|
|
//update_cache(cache, tg, tydesc_metadata(mdval));
|
|
add_named_metadata(cx, ~"llvm.dbg.ty", llnode);
|
|
ret mdval;
|
|
}
|
|
|
|
fn create_composite_type(type_tag: int, name: ~str, file: ValueRef, line: int,
|
|
size: int, align: int, offset: int,
|
|
derived: option<ValueRef>,
|
|
members: option<~[ValueRef]>)
|
|
-> ValueRef {
|
|
let lldata = ~[lltag(type_tag),
|
|
file,
|
|
llstr(name), // type name
|
|
file, // source file definition
|
|
lli32(line), // source line definition
|
|
lli64(size), // size of members
|
|
lli64(align), // align
|
|
lli32/*64*/(offset), // offset
|
|
lli32(0), // flags
|
|
if option::is_none(derived) {
|
|
llnull()
|
|
} else { // derived from
|
|
option::get(derived)
|
|
},
|
|
if option::is_none(members) {
|
|
llnull()
|
|
} else { //members
|
|
llmdnode(option::get(members))
|
|
},
|
|
lli32(0), // runtime language
|
|
llnull()
|
|
];
|
|
ret llmdnode(lldata);
|
|
}
|
|
|
|
fn create_vec(cx: @crate_ctxt, vec_t: ty::t, elem_t: ty::t,
|
|
vec_ty_span: codemap::span, elem_ty: @ast::ty)
|
|
-> @metadata<tydesc_md> {
|
|
let fname = filename_from_span(cx, vec_ty_span);
|
|
let file_node = create_file(cx, fname);
|
|
let elem_ty_md = create_ty(cx, elem_t, elem_ty);
|
|
let scx = create_structure(file_node, ty_to_str(cx.tcx, vec_t), 0);
|
|
let size_t_type = create_basic_type(cx, ty::mk_uint(cx.tcx),
|
|
ast::ty_uint(ast::ty_u), vec_ty_span);
|
|
add_member(scx, ~"fill", 0, sys::size_of::<libc::size_t>() as int,
|
|
sys::min_align_of::<libc::size_t>() as int, size_t_type.node);
|
|
add_member(scx, ~"alloc", 0, sys::size_of::<libc::size_t>() as int,
|
|
sys::min_align_of::<libc::size_t>() as int, size_t_type.node);
|
|
let subrange = llmdnode(~[lltag(SubrangeTag), lli64(0), lli64(0)]);
|
|
let (arr_size, arr_align) = size_and_align_of(cx, elem_t);
|
|
let data_ptr = create_composite_type(ArrayTypeTag, ~"", file_node.node, 0,
|
|
arr_size, arr_align, 0,
|
|
option::some(elem_ty_md.node),
|
|
option::some(~[subrange]));
|
|
add_member(scx, ~"data", 0, 0, // clang says the size should be 0
|
|
sys::min_align_of::<u8>() as int, data_ptr);
|
|
let llnode = finish_structure(scx);
|
|
ret @{node: llnode, data: {hash: ty::type_id(vec_t)}};
|
|
}
|
|
|
|
fn create_ty(_cx: @crate_ctxt, _t: ty::t, _ty: @ast::ty)
|
|
-> @metadata<tydesc_md> {
|
|
/*let cache = get_cache(cx);
|
|
alt cached_metadata::<@metadata<tydesc_md>>(
|
|
cache, tg, {|md| t == md.data.hash}) {
|
|
option::some(md) { ret md; }
|
|
option::none {}
|
|
}*/
|
|
|
|
/* FIXME (#2012): disabled this code as part of the patch that moves
|
|
* recognition of named builtin types into resolve. I tried to fix
|
|
* it, but it seems to already be broken -- it's only called when
|
|
* --xg is given, and compiling with --xg fails on trivial programs.
|
|
*
|
|
* Generating an ast::ty from a ty::t seems like it should not be
|
|
* needed. It is only done to track spans, but you will not get the
|
|
* right spans anyway -- types tend to refer to stuff defined
|
|
* elsewhere, not be self-contained.
|
|
*/
|
|
|
|
fail;
|
|
/*
|
|
fn t_to_ty(cx: crate_ctxt, t: ty::t, span: span) -> @ast::ty {
|
|
let ty = alt ty::get(t).struct {
|
|
ty::ty_nil { ast::ty_nil }
|
|
ty::ty_bot { ast::ty_bot }
|
|
ty::ty_bool { ast::ty_bool }
|
|
ty::ty_int(t) { ast::ty_int(t) }
|
|
ty::ty_float(t) { ast::ty_float(t) }
|
|
ty::ty_uint(t) { ast::ty_uint(t) }
|
|
ty::ty_box(mt) { ast::ty_box({ty: t_to_ty(cx, mt.ty, span),
|
|
mutbl: mt.mutbl}) }
|
|
ty::ty_uniq(mt) { ast::ty_uniq({ty: t_to_ty(cx, mt.ty, span),
|
|
mutbl: mt.mutbl}) }
|
|
ty::ty_rec(fields) {
|
|
let fs = ~[];
|
|
for field in fields {
|
|
vec::push(fs, {node: {ident: field.ident,
|
|
mt: {ty: t_to_ty(cx, field.mt.ty, span),
|
|
mutbl: field.mt.mutbl}},
|
|
span: span});
|
|
}
|
|
ast::ty_rec(fs)
|
|
}
|
|
ty::ty_vec(mt) { ast::ty_vec({ty: t_to_ty(cx, mt.ty, span),
|
|
mutbl: mt.mutbl}) }
|
|
_ {
|
|
cx.sess.span_bug(span, "t_to_ty: Can't handle this type");
|
|
}
|
|
};
|
|
ret @{node: ty, span: span};
|
|
}
|
|
|
|
alt ty.node {
|
|
ast::ty_box(mt) {
|
|
let inner_t = alt ty::get(t).struct {
|
|
ty::ty_box(boxed) { boxed.ty }
|
|
_ { cx.sess.span_bug(ty.span, "t_to_ty was incoherent"); }
|
|
};
|
|
let md = create_ty(cx, inner_t, mt.ty);
|
|
let box = create_boxed_type(cx, t, inner_t, ty.span, md);
|
|
ret create_pointer_type(cx, t, ty.span, box);
|
|
}
|
|
|
|
ast::ty_uniq(mt) {
|
|
let inner_t = alt ty::get(t).struct {
|
|
ty::ty_uniq(boxed) { boxed.ty }
|
|
// Hoping we'll have a way to eliminate this check soon.
|
|
_ { cx.sess.span_bug(ty.span, "t_to_ty was incoherent"); }
|
|
};
|
|
let md = create_ty(cx, inner_t, mt.ty);
|
|
ret create_pointer_type(cx, t, ty.span, md);
|
|
}
|
|
|
|
ast::ty_infer {
|
|
let inferred = t_to_ty(cx, t, ty.span);
|
|
ret create_ty(cx, t, inferred);
|
|
}
|
|
|
|
ast::ty_rec(fields) {
|
|
ret create_record(cx, t, fields, ty.span);
|
|
}
|
|
|
|
ast::ty_vec(mt) {
|
|
let inner_t = ty::sequence_element_type(cx.tcx, t);
|
|
let inner_ast_t = t_to_ty(cx, inner_t, mt.ty.span);
|
|
let v = create_vec(cx, t, inner_t, ty.span, inner_ast_t);
|
|
ret create_pointer_type(cx, t, ty.span, v);
|
|
}
|
|
|
|
ast::ty_path(_, id) {
|
|
alt cx.tcx.def_map.get(id) {
|
|
ast::def_prim_ty(pty) {
|
|
ret create_basic_type(cx, t, pty, ty.span);
|
|
}
|
|
_ {}
|
|
}
|
|
}
|
|
|
|
_ {}
|
|
};
|
|
*/
|
|
}
|
|
|
|
fn filename_from_span(cx: @crate_ctxt, sp: codemap::span) -> ~str {
|
|
codemap::lookup_char_pos(cx.sess.codemap, sp.lo).file.name
|
|
}
|
|
|
|
fn create_var(type_tag: int, context: ValueRef, name: ~str, file: ValueRef,
|
|
line: int, ret_ty: ValueRef) -> ValueRef {
|
|
let lldata = ~[lltag(type_tag),
|
|
context,
|
|
llstr(name),
|
|
file,
|
|
lli32(line),
|
|
ret_ty,
|
|
lli32(0)
|
|
];
|
|
ret llmdnode(lldata);
|
|
}
|
|
|
|
fn create_local_var(bcx: block, local: @ast::local)
|
|
-> @metadata<local_var_md> unsafe {
|
|
let cx = bcx.ccx();
|
|
let cache = get_cache(cx);
|
|
let tg = AutoVariableTag;
|
|
alt cached_metadata::<@metadata<local_var_md>>(
|
|
cache, tg, |md| md.data.id == local.node.id) {
|
|
option::some(md) { ret md; }
|
|
option::none {}
|
|
}
|
|
|
|
let name = alt local.node.pat.node {
|
|
ast::pat_ident(pth, _) { ast_util::path_to_ident(pth) }
|
|
// FIXME this should be handled (#2533)
|
|
_ { fail ~"no single variable name for local"; }
|
|
};
|
|
let loc = codemap::lookup_char_pos(cx.sess.codemap,
|
|
local.span.lo);
|
|
let ty = node_id_type(bcx, local.node.id);
|
|
let tymd = create_ty(cx, ty, local.node.ty);
|
|
let filemd = create_file(cx, loc.file.name);
|
|
let context = alt bcx.parent {
|
|
none { create_function(bcx.fcx).node }
|
|
some(_) { create_block(bcx).node }
|
|
};
|
|
let mdnode = create_var(tg, context, *name, filemd.node,
|
|
loc.line as int, tymd.node);
|
|
let mdval = @{node: mdnode, data: {id: local.node.id}};
|
|
update_cache(cache, AutoVariableTag, local_var_metadata(mdval));
|
|
|
|
let llptr = alt bcx.fcx.lllocals.find(local.node.id) {
|
|
option::some(local_mem(v)) { v }
|
|
option::some(_) {
|
|
bcx.tcx().sess.span_bug(local.span, ~"local is bound to \
|
|
something weird");
|
|
}
|
|
option::none {
|
|
alt bcx.fcx.lllocals.get(local.node.pat.id) {
|
|
local_imm(v) { v }
|
|
_ { bcx.tcx().sess.span_bug(local.span, ~"local is bound to \
|
|
something weird"); }
|
|
}
|
|
}
|
|
};
|
|
let declargs = ~[llmdnode(~[llptr]), mdnode];
|
|
trans::build::Call(bcx, cx.intrinsics.get(~"llvm.dbg.declare"),
|
|
declargs);
|
|
ret mdval;
|
|
}
|
|
|
|
fn create_arg(bcx: block, arg: ast::arg, sp: span)
|
|
-> @metadata<argument_md> unsafe {
|
|
let fcx = bcx.fcx, cx = fcx.ccx;
|
|
let cache = get_cache(cx);
|
|
let tg = ArgVariableTag;
|
|
alt cached_metadata::<@metadata<argument_md>>(
|
|
cache, ArgVariableTag, |md| md.data.id == arg.id) {
|
|
option::some(md) { ret md; }
|
|
option::none {}
|
|
}
|
|
|
|
let loc = codemap::lookup_char_pos(cx.sess.codemap,
|
|
sp.lo);
|
|
let ty = node_id_type(bcx, arg.id);
|
|
let tymd = create_ty(cx, ty, arg.ty);
|
|
let filemd = create_file(cx, loc.file.name);
|
|
let context = create_function(bcx.fcx);
|
|
let mdnode = create_var(tg, context.node, *arg.ident, filemd.node,
|
|
loc.line as int, tymd.node);
|
|
let mdval = @{node: mdnode, data: {id: arg.id}};
|
|
update_cache(cache, tg, argument_metadata(mdval));
|
|
|
|
let llptr = alt fcx.llargs.get(arg.id) {
|
|
local_mem(v) | local_imm(v) { v }
|
|
};
|
|
let declargs = ~[llmdnode(~[llptr]), mdnode];
|
|
trans::build::Call(bcx, cx.intrinsics.get(~"llvm.dbg.declare"),
|
|
declargs);
|
|
ret mdval;
|
|
}
|
|
|
|
fn update_source_pos(cx: block, s: span) {
|
|
if !cx.sess().opts.debuginfo {
|
|
ret;
|
|
}
|
|
let cm = cx.sess().codemap;
|
|
let blockmd = create_block(cx);
|
|
let loc = codemap::lookup_char_pos(cm, s.lo);
|
|
let scopedata = ~[lli32(loc.line as int),
|
|
lli32(loc.col as int),
|
|
blockmd.node,
|
|
llnull()];
|
|
let dbgscope = llmdnode(scopedata);
|
|
llvm::LLVMSetCurrentDebugLocation(trans::build::B(cx), dbgscope);
|
|
}
|
|
|
|
fn create_function(fcx: fn_ctxt) -> @metadata<subprogram_md> {
|
|
let cx = fcx.ccx;
|
|
let dbg_cx = option::get(cx.dbg_cx);
|
|
|
|
#debug("~~");
|
|
log(debug, fcx.id);
|
|
|
|
let sp = option::get(fcx.span);
|
|
log(debug, codemap::span_to_str(sp, cx.sess.codemap));
|
|
|
|
let (ident, ret_ty, id) = alt cx.tcx.items.get(fcx.id) {
|
|
ast_map::node_item(item, _) {
|
|
alt item.node {
|
|
ast::item_fn(decl, _, _) {
|
|
(item.ident, decl.output, item.id)
|
|
}
|
|
_ { fcx.ccx.sess.span_bug(item.span, ~"create_function: item \
|
|
bound to non-function"); }
|
|
}
|
|
}
|
|
ast_map::node_method(method, _, _) {
|
|
(method.ident, method.decl.output, method.id)
|
|
}
|
|
ast_map::node_ctor(nm, _, ctor, _, _) {
|
|
// FIXME: output type may be wrong (#2194)
|
|
(nm, ctor.node.dec.output, ctor.node.id)
|
|
}
|
|
ast_map::node_expr(expr) {
|
|
alt expr.node {
|
|
ast::expr_fn(_, decl, _, _) {
|
|
(@dbg_cx.names(~"fn"), decl.output, expr.id)
|
|
}
|
|
ast::expr_fn_block(decl, _, _) {
|
|
(@dbg_cx.names(~"fn"), decl.output, expr.id)
|
|
}
|
|
_ { fcx.ccx.sess.span_bug(expr.span, ~"create_function: \
|
|
expected an expr_fn or fn_block here"); }
|
|
}
|
|
}
|
|
_ { fcx.ccx.sess.bug(~"create_function: unexpected \
|
|
sort of node"); }
|
|
};
|
|
|
|
log(debug, ident);
|
|
log(debug, id);
|
|
|
|
let cache = get_cache(cx);
|
|
alt cached_metadata::<@metadata<subprogram_md>>(
|
|
cache, SubprogramTag, |md| md.data.id == id) {
|
|
option::some(md) { ret md; }
|
|
option::none {}
|
|
}
|
|
|
|
let loc = codemap::lookup_char_pos(cx.sess.codemap,
|
|
sp.lo);
|
|
let file_node = create_file(cx, loc.file.name).node;
|
|
let ty_node = if cx.sess.opts.extra_debuginfo {
|
|
alt ret_ty.node {
|
|
ast::ty_nil { llnull() }
|
|
_ { create_ty(cx, ty::node_id_to_type(cx.tcx, id), ret_ty).node }
|
|
}
|
|
} else {
|
|
llnull()
|
|
};
|
|
let sub_node = create_composite_type(SubroutineTag, ~"", file_node, 0, 0,
|
|
0, 0, option::none,
|
|
option::some(~[ty_node]));
|
|
|
|
let fn_metadata = ~[lltag(SubprogramTag),
|
|
llunused(),
|
|
file_node,
|
|
llstr(*ident),
|
|
llstr(*ident), //XXX fully-qualified C++ name
|
|
llstr(~""), //XXX MIPS name?????
|
|
file_node,
|
|
lli32(loc.line as int),
|
|
sub_node,
|
|
lli1(false), //XXX static (check export)
|
|
lli1(true), // defined in compilation unit
|
|
lli32(DW_VIRTUALITY_none), // virtual-ness
|
|
lli32(0i), //index into virt func
|
|
/*llnull()*/ lli32(0), // base type with vtbl
|
|
lli32(256), // flags
|
|
lli1(cx.sess.opts.optimize != 0u),
|
|
fcx.llfn
|
|
//list of template params
|
|
//func decl descriptor
|
|
//list of func vars
|
|
];
|
|
let val = llmdnode(fn_metadata);
|
|
add_named_metadata(cx, ~"llvm.dbg.sp", val);
|
|
let mdval = @{node: val, data: {id: id}};
|
|
update_cache(cache, SubprogramTag, subprogram_metadata(mdval));
|
|
|
|
ret mdval;
|
|
}
|