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binutils-gdb/binutils/testsuite/binutils-all/locview-2.s
Alexandre Oliva 9f27220911 LVU: dump loclists with locviews 
When dumping location lists, also dump locview lists that may be
interspersed with them, and bring view pairs next to the corresponding
location list entries.

This patch supports DW_AT_GNU_locviews as a separate attribute for
DWARF4- loc_lists and split (dwo) loclists, as well as DWARF5
loclists.

It also supports, in DWARF5 loclists, the proposed
DW_LLE_GNU_view_pair loclist entry type proposed for DWARF6.


The tests use 32-bit DWARF, even on 64-bit targets, resolving offsets
to constants so as to reduce the risk that relocations be created for
them, or that the offsets be rejected as nonconstants.


The patch also adds an xfail to an unrelated test, namely dw5, so that
no unexpected fails remain on nds32*-elf, one of the tested targets.


Reviewed-by: Alan Modra <amodra@gmail.com>


for  include/ChangeLog

	* dwarf2.def (DW_AT_GNU_locviews): New.
	* dwarf2.h (enum dwarf_location_list_entry_type): Add
	DW_LLE_GNU_view_pair.
	(DW_LLE_view_pair): Define.

for  binutils/ChangeLog

	* dwarf.h (debug_info): Add loc_views and num_loc_views.
	* dwarf.c (vm1): New constant.
	(print_dwarf_view): New function.
	(read_and_display_attr_value): Support DW_AT_GNU_locviews.
	(process_debug_info): Keep num_loc_offsets and num_loc_views
	in sync.
	(display_view_pair_list): New function.
	(display_loc_list_dwo): Take vstart_ptr; update it.  Dump
	location view pairs before the range they apply to, when a
	viewlist augments the loc list.
	(display_loc_list): Likewise.  Check view numbers in range
	tests.
	(display_loclists_list): Likewise.  Handle view pair entries,
	and warn on trailing ones.
	(loc_views): New variable.
	(loc_offsets_compar): Compare loc_views if loc_offsets are the
	same.
	(display_debug_loc): Check and sort loc_views too.  Accept
	loc_view as expected_start.  Skip if lists and views are the
	same.  Dump locview list separately in order, and pass the
	locview list base to each list dump function.  Warn and skip
	overlap and hole checking if we find loclists and locviews to
	not be adjacent.
	* testsuite/binutils-all/locview-1.s: New.
	* testsuite/binutils-all/readelf.locview-1: New.
	* testsuite/binutils-all/locview-2.s: New.
	* testsuite/binutils-all/readelf.locview-2: New.
	* testsuite/binutils-all/readelf.exp: Run new tests.  Fix
	option spelling in pr18374 fail message.  XFAIL dw5 test on
	nds32*-elf.
2017-09-22 17:05:51 -03:00

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.text
.Ltext0:
.LFB0:
/* locview.c:1 */
.LM1:
/* view -0 */
/* locview.c:2 */
.LM2:
/* view 1 */
.LVL0:
/* DEBUG i => 0 */
/* locview.c:3 */
.LM3:
/* view 2 */
/* DEBUG j => 0x1 */
/* locview.c:4 */
.LM4:
/* view 3 */
/* DEBUG i => 0x2 */
/* locview.c:5 */
.LM5:
/* view 4 */
/* DEBUG j => 0x3 */
/* locview.c:6 */
.LM6:
/* view 5 */
/* DEBUG k => 0x4 */
/* DEBUG l => 0x4 */
/* locview.c:7 */
.LM7:
/* view 6 */
/* DEBUG k => 0x5 */
/* DEBUG l => 0x5 */
/* locview.c:8 */
.LM8:
/* view 7 */
/* DEBUG k => 0x6 */
/* DEBUG l => 0x6 */
/* locview.c:9 */
.LM9:
/* view 8 */
.byte 0
.LFE0:
.Letext0:
.section .debug_info
.Ldebug_info0:
.LIbase:
.4byte .LIend - .LIstart /* Length of Compilation Unit Info */
.LIstart:
.2byte 0x5 /* DWARF version number */
.byte 0x1 /* DW_UT_compile */
.byte 0x4 /* Pointer Size (in bytes) */
.4byte .Ldebug_abbrev0 /* Offset Into Abbrev. Section */
.LIcu:
.uleb128 0x2 /* (DIE (cu) DW_TAG_compile_unit) */
.ascii "hand-crafted based on GCC output\0"
.byte 0x1d /* DW_AT_language */
.ascii "locview.c\0"
.ascii "/tmp\0"
.4byte 0 /* DW_AT_low_pc */
.LIsubf:
.uleb128 0x3 /* (DIE (subf) DW_TAG_subprogram) */
.ascii "f\0" /* DW_AT_name */
.byte 0x1 /* DW_AT_decl_file (locview.c) */
.byte 0x1 /* DW_AT_decl_line */
.4byte .LIint-.LIbase /* DW_AT_type */
.4byte .LFB0 /* DW_AT_low_pc */
.4byte 1 /* .LFE0-.LFB0 */ /* DW_AT_high_pc */
.uleb128 0x1 /* DW_AT_frame_base */
.byte 0x9c /* DW_OP_call_frame_cfa */
/* DW_AT_call_all_calls */
.4byte .LIint - .LIbase /* DW_AT_sibling */
.LIvari:
.uleb128 0x1 /* (DIE (vari) DW_TAG_variable) */
.ascii "i\0" /* DW_AT_name */
/* DW_AT_decl_file (1, locview.c) */
.byte 0x2 /* DW_AT_decl_line */
.4byte .LIint - .LIbase /* DW_AT_type */
.4byte .LLST0 /* DW_AT_location */
.4byte .LVUS0 /* DW_AT_GNU_locviews */
.LIvarj:
.uleb128 0x1 /* (DIE (varj) DW_TAG_variable) */
.ascii "j\0" /* DW_AT_name */
/* DW_AT_decl_file (1, locview.c) */
.byte 0x3 /* DW_AT_decl_line */
.4byte .LIint - .LIbase /* DW_AT_type */
.4byte .LLST1 /* DW_AT_location */
.4byte .LVUS1 /* DW_AT_GNU_locviews */
.LIvark:
.uleb128 0x5 /* (DIE (vark) DW_TAG_variable) */
.ascii "k\0" /* DW_AT_name */
/* DW_AT_decl_file (1, locview.c) */
.byte 0x6 /* DW_AT_decl_line */
.4byte .LIint - .LIbase /* DW_AT_type */
.4byte .LVUS2 /* DW_AT_GNU_locviews */
.4byte .LLST2 /* DW_AT_location */
.LIvarl:
.uleb128 0x6 /* (DIE (varl) DW_TAG_variable) */
.ascii "l\0" /* DW_AT_name */
/* DW_AT_decl_file (1, locview.c) */
.byte 0x6 /* DW_AT_decl_line */
.4byte .LIint - .LIbase /* DW_AT_type */
.4byte .LLST3 /* DW_AT_location */
.byte 0 /* end of children of DIE subf */
.LIint:
.uleb128 0x4 /* (DIE (int) DW_TAG_base_type) */
.byte 0x4 /* DW_AT_byte_size */
.byte 0x5 /* DW_AT_encoding */
.ascii "int\0" /* DW_AT_name */
.byte 0 /* end of children of DIE cu */
.LIend:
.section .debug_abbrev
.Ldebug_abbrev0:
.LAbrv1:
.uleb128 0x1 /* (abbrev code) */
.uleb128 0x34 /* (TAG: DW_TAG_variable) */
.byte 0 /* DW_children_no */
.uleb128 0x3 /* (DW_AT_name) */
.uleb128 0x8 /* (DW_FORM_string) */
.uleb128 0x3a /* (DW_AT_decl_file) */
.uleb128 0x21 /* (DW_FORM_implicit_const) */
.sleb128 1 /* (locview.c) */
.uleb128 0x3b /* (DW_AT_decl_line) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x49 /* (DW_AT_type) */
.uleb128 0x13 /* (DW_FORM_ref4) */
.uleb128 0x2 /* (DW_AT_location) */
.uleb128 0x17 /* (DW_FORM_sec_offset) */
.uleb128 0x2137 /* (DW_AT_GNU_locviews) */
.uleb128 0x17 /* (DW_FORM_sec_offset) */
.byte 0
.byte 0
.LAbrv2:
.uleb128 0x2 /* (abbrev code) */
.uleb128 0x11 /* (TAG: DW_TAG_compile_unit) */
.byte 0x1 /* DW_children_yes */
.uleb128 0x25 /* (DW_AT_producer) */
.uleb128 0x8 /* (DW_FORM_string) */
.uleb128 0x13 /* (DW_AT_language) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x3 /* (DW_AT_name) */
.uleb128 0x8 /* (DW_FORM_string) */
.uleb128 0x1b /* (DW_AT_comp_dir) */
.uleb128 0x8 /* (DW_FORM_string) */
.uleb128 0x11 /* (DW_AT_low_pc) */
.uleb128 0x1 /* (DW_FORM_addr) */
.byte 0
.byte 0
.LAbrv3:
.uleb128 0x3 /* (abbrev code) */
.uleb128 0x2e /* (TAG: DW_TAG_subprogram) */
.byte 0x1 /* DW_children_yes */
.uleb128 0x3 /* (DW_AT_name) */
.uleb128 0x8 /* (DW_FORM_string) */
.uleb128 0x3a /* (DW_AT_decl_file) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x3b /* (DW_AT_decl_line) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x49 /* (DW_AT_type) */
.uleb128 0x13 /* (DW_FORM_ref4) */
.uleb128 0x11 /* (DW_AT_low_pc) */
.uleb128 0x1 /* (DW_FORM_addr) */
.uleb128 0x12 /* (DW_AT_high_pc) */
.uleb128 0x6 /* (DW_FORM_data4) */
.uleb128 0x40 /* (DW_AT_frame_base) */
.uleb128 0x18 /* (DW_FORM_exprloc) */
.uleb128 0x7a /* (DW_AT_call_all_calls) */
.uleb128 0x19 /* (DW_FORM_flag_present) */
.uleb128 0x1 /* (DW_AT_sibling) */
.uleb128 0x13 /* (DW_FORM_ref4) */
.byte 0
.byte 0
.LAbrv4:
.uleb128 0x4 /* (abbrev code) */
.uleb128 0x24 /* (TAG: DW_TAG_base_type) */
.byte 0 /* DW_children_no */
.uleb128 0xb /* (DW_AT_byte_size) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x3e /* (DW_AT_encoding) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x3 /* (DW_AT_name) */
.uleb128 0x8 /* (DW_FORM_string) */
.byte 0
.byte 0
.LAbrv5:
.uleb128 0x5 /* (abbrev code) */
.uleb128 0x34 /* (TAG: DW_TAG_variable) */
.byte 0 /* DW_children_no */
.uleb128 0x3 /* (DW_AT_name) */
.uleb128 0x8 /* (DW_FORM_string) */
.uleb128 0x3a /* (DW_AT_decl_file) */
.uleb128 0x21 /* (DW_FORM_implicit_const) */
.sleb128 1 /* (locview.c) */
.uleb128 0x3b /* (DW_AT_decl_line) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x49 /* (DW_AT_type) */
.uleb128 0x13 /* (DW_FORM_ref4) */
.uleb128 0x2137 /* (DW_AT_GNU_locviews) */
.uleb128 0x17 /* (DW_FORM_sec_offset) */
.uleb128 0x2 /* (DW_AT_location) */
.uleb128 0x17 /* (DW_FORM_sec_offset) */
.byte 0
.byte 0
.LAbrv6:
.uleb128 0x6 /* (abbrev code) */
.uleb128 0x34 /* (TAG: DW_TAG_variable) */
.byte 0 /* DW_children_no */
.uleb128 0x3 /* (DW_AT_name) */
.uleb128 0x8 /* (DW_FORM_string) */
.uleb128 0x3a /* (DW_AT_decl_file) */
.uleb128 0x21 /* (DW_FORM_implicit_const) */
.sleb128 1 /* (locview.c) */
.uleb128 0x3b /* (DW_AT_decl_line) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x49 /* (DW_AT_type) */
.uleb128 0x13 /* (DW_FORM_ref4) */
.uleb128 0x2 /* (DW_AT_location) */
.uleb128 0x17 /* (DW_FORM_sec_offset) */
.byte 0
.byte 0
.byte 0
.section .debug_loclists
.4byte .Ldebug_loc2-.Ldebug_loc1 /* Length of Location Lists */
.Ldebug_loc1:
.2byte 0x5 /* DWARF version number */
.byte 0x4 /* Address Size */
.byte 0 /* Segment Size */
.4byte 0 /* Offset Entry Count */
.Ldebug_loc0:
.LVUS0:
.uleb128 0x2 /* View list begin (*.LVUS0) */
.uleb128 0x4 /* View list end (*.LVUS0) */
.uleb128 0x4 /* View list begin (*.LVUS0) */
.uleb128 0 /* View list end (*.LVUS0) */
.LLST0:
.byte 0x6 /* DW_LLE_base_address (*.LLST0) */
.4byte .LVL0 /* Base address (*.LLST0) */
.byte 0x4 /* DW_LLE_offset_pair (*.LLST0) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list begin address (*.LLST0) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list end address (*.LLST0) */
.uleb128 0x2 /* Location expression size */
.byte 0x30 /* DW_OP_lit0 */
.byte 0x9f /* DW_OP_stack_value */
.byte 0x4 /* DW_LLE_offset_pair (*.LLST0) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list begin address (*.LLST0) */
.uleb128 1 /* .LFE0-.LVL0 */ /* Location list end address (*.LLST0) */
.uleb128 0x2 /* Location expression size */
.byte 0x32 /* DW_OP_lit2 */
.byte 0x9f /* DW_OP_stack_value */
.byte 0 /* DW_LLE_end_of_list (*.LLST0) */
.LLST1:
.byte 0x6 /* DW_LLE_base_address (*.LLST1) */
.4byte .LVL0 /* Base address (*.LLST1) */
.byte 0x4 /* DW_LLE_offset_pair (*.LLST1) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list begin address (*.LLST1) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list end address (*.LLST1) */
.uleb128 0x2 /* Location expression size */
.byte 0x31 /* DW_OP_lit1 */
.byte 0x9f /* DW_OP_stack_value */
.byte 0x4 /* DW_LLE_offset_pair (*.LLST1) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list begin address (*.LLST1) */
.uleb128 1 /* .LFE0-.LVL0 */ /* Location list end address (*.LLST1) */
.uleb128 0x2 /* Location expression size */
.byte 0x33 /* DW_OP_lit3 */
.byte 0x9f /* DW_OP_stack_value */
.byte 0 /* DW_LLE_end_of_list (*.LLST1) */
.LVUS1:
.uleb128 0x3 /* View list begin (*.LVUS1) */
.uleb128 0x5 /* View list end (*.LVUS1) */
.uleb128 0x5 /* View list begin (*.LVUS1) */
.uleb128 0 /* View list end (*.LVUS1) */
.LVUS2:
.uleb128 0x6 /* View list begin (*.LVUS2) */
.uleb128 0x7 /* View list end (*.LVUS2) */
.uleb128 0x7 /* View list begin (*.LVUS2) */
.uleb128 0x8 /* View list end (*.LVUS2) */
.uleb128 0x8 /* View list begin (*.LVUS2) */
.uleb128 0 /* View list end (*.LVUS2) */
.LLST2:
.byte 0x6 /* DW_LLE_base_address (*.LLST2) */
.4byte .LVL0 /* Base address (*.LLST2) */
.byte 0x4 /* DW_LLE_offset_pair (*.LLST2) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list begin address (*.LLST2) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list end address (*.LLST2) */
.uleb128 0x2 /* Location expression size */
.byte 0x34 /* DW_OP_lit4 */
.byte 0x9f /* DW_OP_stack_value */
.byte 0x4 /* DW_LLE_offset_pair (*.LLST2) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list begin address (*.LLST2) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list end address (*.LLST2) */
.uleb128 0x2 /* Location expression size */
.byte 0x35 /* DW_OP_lit5 */
.byte 0x9f /* DW_OP_stack_value */
.byte 0x4 /* DW_LLE_offset_pair (*.LLST2) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list begin address (*.LLST2) */
.uleb128 1 /* .LFE0-.LVL0 */ /* Location list end address (*.LLST2) */
.uleb128 0x2 /* Location expression size */
.byte 0x36 /* DW_OP_lit6 */
.byte 0x9f /* DW_OP_stack_value */
.byte 0 /* DW_LLE_end_of_list (*.LLST2) */
.LLST3:
.byte 0x6 /* DW_LLE_base_address (*.LLST3) */
.4byte .LVL0 /* Base address (*.LLST3) */
.byte 0x9 /* DW_LLE_view_pair (extension proposed for DWARF6) */
.uleb128 0x6 /* View list begin (*.LLST3) */
.uleb128 0x7 /* View list end (*.LVUS3) */
.byte 0x4 /* DW_LLE_offset_pair (*.LLST3) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list begin address (*.LLST3) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list end address (*.LLST3) */
.uleb128 0x2 /* Location expression size */
.byte 0x34 /* DW_OP_lit4 */
.byte 0x9f /* DW_OP_stack_value */
.byte 0x9 /* DW_LLE_view_pair */
.uleb128 0x7 /* View list begin (*.LLST3) */
.uleb128 0x8 /* View list end (*.LVUS3) */
.byte 0x4 /* DW_LLE_offset_pair (*.LLST3) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list begin address (*.LLST3) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list end address (*.LLST3) */
.uleb128 0x2 /* Location expression size */
.byte 0x35 /* DW_OP_lit5 */
.byte 0x9f /* DW_OP_stack_value */
.byte 0x9 /* DW_LLE_view_pair */
.uleb128 0x8 /* View list begin (*.LLST3) */
.uleb128 0x0 /* View list end (*.LVUS3) */
.byte 0x4 /* DW_LLE_offset_pair (*.LLST3) */
.uleb128 0 /* .LVL0-.LVL0 */ /* Location list begin address (*.LLST3) */
.uleb128 1 /* .LFE0-.LVL0 */ /* Location list end address (*.LLST3) */
.uleb128 0x2 /* Location expression size */
.byte 0x36 /* DW_OP_lit6 */
.byte 0x9f /* DW_OP_stack_value */
.byte 0 /* DW_LLE_end_of_list (*.LLST3) */
.Ldebug_loc2:
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