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libiberty: Add get_DW_UT_name and update include/dwarf2.{def,h} 

This adds a get_DW_UT_name function to dwarfnames using dwarf2.def
for use in binutils readelf to show the unit types in a DWARF5 header.

Also remove DW_CIE_VERSION which was already removed in binutils/gdb
and is not used in gcc.

include/ChangeLog:

	* dwarf2.def: Add DWARF5 Unit type header encoding macros
	DW_UT_FIRST, DW_UT and DW_UT_END.
	* dwarf2.h (enum dwarf_unit_type): Removed and define using
	DW_UT_FIRST, DW_UT and DW_UT_END macros.
	(DW_CIE_VERSION): Removed.
	(get_DW_UT_name): New function declaration.

libiberty/ChangeLog:

	* dwarfnames.c (get_DW_UT_name): Define using DW_UT_FIRST, DW_UT
	and DW_UT_END.
This commit is contained in:
Mark Wielaard 2020-09-23 16:10:41 +02:00
parent d13c0ae859
commit 942ab9e9d4
3 changed files with 29 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
include/dwarf2.def
View File

@ -805,3 +805,14 @@ DW_IDX (DW_IDX_hi_user, 0x3fff)
DW_IDX (DW_IDX_GNU_internal, 0x2000)
DW_IDX (DW_IDX_GNU_external, 0x2001)
DW_END_IDX
/* DWARF5 Unit type header encodings */
DW_FIRST_UT (DW_UT_compile, 0x01)
DW_UT (DW_UT_type, 0x02)
DW_UT (DW_UT_partial, 0x03)
DW_UT (DW_UT_skeleton, 0x04)
DW_UT (DW_UT_split_compile, 0x05)
DW_UT (DW_UT_split_type, 0x06)
DW_UT (DW_UT_lo_user, 0x80)
DW_UT (DW_UT_hi_user, 0xff)
DW_END_UT

25
include/dwarf2.h
View File

@ -55,6 +55,7 @@
#define DW_CFA_DUP(name, value) , name = value
#define DW_IDX(name, value) , name = value
#define DW_IDX_DUP(name, value) , name = value
#define DW_UT(name, value) , name = value
#define DW_FIRST_TAG(name, value) enum dwarf_tag { \
name = value
@ -77,6 +78,9 @@
#define DW_FIRST_IDX(name, value) enum dwarf_name_index_attribute { \
name = value
#define DW_END_IDX };
#define DW_FIRST_UT(name, value) enum dwarf_unit_type { \
name = value
#define DW_END_UT };
#include "dwarf2.def"
@ -94,6 +98,8 @@
#undef DW_END_CFA
#undef DW_FIRST_IDX
#undef DW_END_IDX
#undef DW_FIRST_UT
#undef DW_END_UT
#undef DW_TAG
#undef DW_TAG_DUP
@ -108,6 +114,7 @@
#undef DW_CFA_DUP
#undef DW_IDX
#undef DW_IDX_DUP
#undef DW_UT
/* Flag that tells whether entry has a child or not. */
#define DW_children_no 0
@ -316,7 +323,6 @@ enum dwarf_location_list_entry_type
#define DW_CIE_ID 0xffffffff
#define DW64_CIE_ID 0xffffffffffffffffULL
#define DW_CIE_VERSION 1
#define DW_CFA_extended 0
@ -451,19 +457,6 @@ enum dwarf_range_list_entry
DW_RLE_start_end = 0x06,
DW_RLE_start_length = 0x07
};
/* Unit types in unit_type unit header field. */
enum dwarf_unit_type
{
DW_UT_compile = 0x01,
DW_UT_type = 0x02,
DW_UT_partial = 0x03,
DW_UT_skeleton = 0x04,
DW_UT_split_compile = 0x05,
DW_UT_split_type = 0x06,
DW_UT_lo_user = 0x80,
DW_UT_hi_user = 0xff
};
/* @@@ For use with GNU frame unwind information. */
@ -552,6 +545,10 @@ extern const char *get_DW_CFA_name (unsigned int opc);
recognized. */
extern const char *get_DW_IDX_name (unsigned int idx);
/* Return the name of a DW_UT_ constant, or NULL if the value is not
recognized. */
extern const char *get_DW_UT_name (unsigned int ut);
#ifdef __cplusplus
}
#endif /* __cplusplus */

7
libiberty/dwarfnames.c
View File

@ -64,6 +64,11 @@ Boston, MA 02110-1301, USA. */
switch (idx) { \
DW_IDX (name, value)
#define DW_END_IDX } return 0; }
#define DW_FIRST_UT(name, value) \
const char *get_DW_UT_name (unsigned int ut) { \
switch (ut) { \
DW_UT (name, value)
#define DW_END_UT } return 0; }
#define DW_TAG(name, value) case name: return # name ;
#define DW_TAG_DUP(name, value)
@ -78,6 +83,7 @@ Boston, MA 02110-1301, USA. */
#define DW_CFA_DUP(name, value)
#define DW_IDX(name, value) case name: return # name ;
#define DW_IDX_DUP(name, value)
#define DW_UT(name, value) case name: return # name ;
#include "dwarf2.def"
@ -95,6 +101,7 @@ Boston, MA 02110-1301, USA. */
#undef DW_END_CFA
#undef DW_FIRST_IDX
#undef DW_END_IDX
#undef DW_END_UT
#undef DW_TAG
#undef DW_TAG_DUP