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| author | H.J. Lu <hjl.tools@gmail.com> | 2018-12-07 08:30:30 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2018-12-07 08:30:43 -0800 |
| commit | d2ef37ebd9f771d06edf1fdea37970f60b242b2d (patch) | |
| tree | b832c9a33523fbbf2b08af67fa0aceba8253d709 /ld/ld.texi | |
| parent | 4a8110007bf58be329f108374e00ef8ddc1fe3ec (diff) | |
| download | gdb-d2ef37ebd9f771d06edf1fdea37970f60b242b2d.zip gdb-d2ef37ebd9f771d06edf1fdea37970f60b242b2d.tar.gz gdb-d2ef37ebd9f771d06edf1fdea37970f60b242b2d.tar.bz2 | |
elf: Report property change when merging properties
With merging properties, report property change in linker map file, like
Merging program properties
Removed property 0xc0010000 to merge /usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64/crt1.o (0x0) and /usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64/crti.o (0x0)
Removed property 0xc0000002 to merge /usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64/crt1.o (0x3) and x.o (not found)
Removed property 0xc0000000 to merge /usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64/crt1.o (not found) and /usr/lib64/libc_nonshared.a(elf-init.oS) (0x0)
Removed property 0xc0000001 to merge /usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64/crt1.o (not found) and /usr/lib64/libc_nonshared.a(elf-init.oS) (0x0)
bfd/
* elf-properties.c (elf_find_and_remove_property): Add a
bfd_boolean argument to indicate if the property should be
removed.
(elf_merge_gnu_property_list): Updated. Report
property change in linker map file.
(elf_get_gnu_property_section_size): Skip property_remove
properties.
(elf_write_gnu_properties): Likewise.
(_bfd_elf_link_setup_gnu_properties): Report property merge
in linker map file. Pass abfd to elf_merge_gnu_property_list.
include/
* bfdlink.h (bfd_link_info): Add has_map_file.
ld/
* NEWS: Updated for property change report.
* ld.texi: Document property change report.
* ldmain.c (main): Set link_info.has_map_file to TRUE when
linker map file is used.
* testsuite/ld-scripts/rgn-over1.d: Updated.
* testsuite/ld-scripts/rgn-over2.d: Likewise.
* testsuite/ld-scripts/rgn-over3.d: Likewise.
* testsuite/ld-scripts/rgn-over4.d: Likewise.
* testsuite/ld-scripts/rgn-over5.d: Likewise.
* testsuite/ld-scripts/rgn-over6.d: Likewise.
* testsuite/ld-scripts/rgn-over7.d: Likewise.
* testsuite/ld-x86-64/property-x86-ibt1a-x32.d: Check linker map
file.
* testsuite/ld-x86-64/property-x86-ibt1a.d: Likewise.
* testsuite/ld-x86-64/property-x86-ibt1a.map: New file.
Diffstat (limited to 'ld/ld.texi')
| -rw-r--r-- | ld/ld.texi | 22 |
1 files changed, 22 insertions, 0 deletions
@@ -759,6 +759,28 @@ option is used: See @ref{Expressions} for more information about expressions in linker scripts. + +@item How GNU properties are merged. + +When linker merges input .note.gnu.property sections into one output +.note.gnu.property section, some properties are removed or updated, +which are reported in the link map as + +@smallexample +Removed property 0xc0000002 to merge foo.o (0x1) and bar.o (not found) +@end smallexample + +It indicates that property 0xc0000002 is removed from output when +merging properties in @file{foo.o}, whose property 0xc0000002 value +is 0x1, and @file{bar.o}, which doesn't have property 0xc0000002. + +@smallexample +Updated property 0xc0000002 (0x1) to merge foo.o (0x1) and bar.o (0x1) +@end smallexample + +It indicates that property 0xc0010001 value is updated to 0x1 in output +when merging properties in @file{foo.o}, whose 0xc0010001 property value +is 0x1, and @file{bar.o}, whose 0xc0010001 property value is 0x1. @end itemize @kindex -n |