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binutils-gdb/binutils/testsuite/binutils-all/readelf.locview-1

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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.
2017-09-23 04:05:51 +08:00
Contents of the .*ebug_loc section:
Offset Begin End Expression
00000000 v0000002 v0000004 location view pair
00000002 v0000004 v0000000 location view pair
00000004 v0000002 v0000004 views at 00000000 for:
00000000 00000000 \(DW_OP_lit0; DW_OP_stack_value\)
00000010 v0000004 v0000000 views at 00000002 for:
00000000 00000001 \(DW_OP_lit2; DW_OP_stack_value\)
0000001c <End of list>
00000024 v0000003 v0000005 views at 00000044 for:
00000000 00000000 \(DW_OP_lit1; DW_OP_stack_value\)
00000030 v0000005 v0000000 views at 00000046 for:
00000000 00000001 \(DW_OP_lit3; DW_OP_stack_value\)
0000003c <End of list>
00000044 v0000003 v0000005 location view pair
00000046 v0000005 v0000000 location view pair
00000048 v0000006 v0000007 location view pair
0000004a v0000007 v0000008 location view pair
0000004c v0000008 v0000000 location view pair
0000004e v0000006 v0000007 views at 00000048 for:
00000000 00000000 \(DW_OP_lit4; DW_OP_stack_value\)
0000005a v0000007 v0000008 views at 0000004a for:
00000000 00000000 \(DW_OP_lit5; DW_OP_stack_value\)
00000066 v0000008 v0000000 views at 0000004c for:
00000000 00000001 \(DW_OP_lit6; DW_OP_stack_value\)
00000072 <End of list>
#pass
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