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| author | Mark Harmstone <mark@harmstone.com> | 2024-11-02 15:31:12 +0000 |
|---|---|---|
| committer | Mark Harmstone <mark@harmstone.com> | 2024-11-05 00:47:41 +0000 |
| commit | 6177b45fcdc4273c5e94e8032644ca5807e7e93b (patch) | |
| tree | f1dc6eca34d466a1a621b37a0685630679463584 /gcc/dwarf2codeview.cc | |
| parent | b0f4f556ea9f07d0b6fb6407ab25a193d27c806e (diff) | |
| download | gcc-6177b45fcdc4273c5e94e8032644ca5807e7e93b.zip gcc-6177b45fcdc4273c5e94e8032644ca5807e7e93b.tar.gz gcc-6177b45fcdc4273c5e94e8032644ca5807e7e93b.tar.bz2 | |
Handle T_HRESULT types in CodeView records
Follow MSVC in having a special type value, T_HRESULT, for (signed)
longs that have been typedef'd with the name "HRESULT". This is so that
the debugger can display user-friendly constant names when debugging COM
code.
gcc/
* dwarf2codeview.cc (get_type_num_typedef): New function.
(get_type_num): Call get_type_num_typedef.
* dwarf2codeview.h (T_HRESULT): Define.
Diffstat (limited to 'gcc/dwarf2codeview.cc')
| -rw-r--r-- | gcc/dwarf2codeview.cc | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/gcc/dwarf2codeview.cc b/gcc/dwarf2codeview.cc index 876057b..5e8a4ab 100644 --- a/gcc/dwarf2codeview.cc +++ b/gcc/dwarf2codeview.cc @@ -6220,6 +6220,29 @@ get_type_num_ptr_to_member_type (dw_die_ref type, bool in_struct) return ct->num; } +/* Return the type number that corresponds to a DW_TAG_typedef DIE: either the + type number of the base type, or follow MSVC in having a special value + for the HRESULT used by COM. */ + +static uint32_t +get_type_num_typedef (dw_die_ref type, bool in_struct) +{ + uint32_t num; + + num = get_type_num (get_AT_ref (type, DW_AT_type), in_struct, false); + + if (num == T_LONG) + { + const char *name = get_AT_string (type, DW_AT_name); + + /* longs typedef'd as "HRESULT" get their own type */ + if (name && !strcmp (name, "HRESULT")) + num = T_HRESULT; + } + + return num; +} + /* Process a DIE representing a type definition, add a CodeView type if necessary, and return its number. If it's something we can't handle, return 0. We keep a hash table so that we're not adding the same type multiple @@ -6254,9 +6277,7 @@ get_type_num (dw_die_ref type, bool in_struct, bool no_fwd_ref) break; case DW_TAG_typedef: - /* FIXME - signed longs typedef'd as "HRESULT" should get their - own type (T_HRESULT) */ - num = get_type_num (get_AT_ref (type, DW_AT_type), in_struct, false); + num = get_type_num_typedef (type, in_struct); break; case DW_TAG_pointer_type: |