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| author | H.J. Lu <hjl.tools@gmail.com> | 2020-10-13 05:18:13 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2020-10-13 05:18:24 -0700 |
| commit | 6bf4a34047452f882c5cc66bd85812ee1bb5a41c (patch) | |
| tree | 2d96b0c8ef59de1d9e026497798470bc9504bb08 /gold/output.h | |
| parent | aac1d94f19492fb6bea7193497bce599952c429d (diff) | |
| download | gdb-6bf4a34047452f882c5cc66bd85812ee1bb5a41c.zip gdb-6bf4a34047452f882c5cc66bd85812ee1bb5a41c.tar.gz gdb-6bf4a34047452f882c5cc66bd85812ee1bb5a41c.tar.bz2 | |
gold: Properly align the NT_GNU_PROPERTY_TYPE_0 note
The NT_GNU_PROPERTY_TYPE_0 note should be aligned to 8 bytes for 64-bit
ELF as specified by gABI. A note section can be only placed in a PT_NOTE
segment with the same alignment.
PR gold/22914
PR gold/23535
* layout.cc (Layout::attach_allocated_section_to_segment): Place
a note section in a PT_NOTE segment with the same alignment. Set
the alignment of the PT_NOTE segment from the alignment of the
note section.
(Layout::create_note): Align the NT_GNU_PROPERTY_TYPE_0 note to 8
bytes for 64-bit ELF.
(Layout::segment_precedes): Place segments with larger alignments
first.
* output.cc (Output_segment::Output_segment): Initialize align_.
* output.h (Output_segment): Add align, set_align and align_.
* testsuite/Makefile.am (gnu_property_test.stdout): Pass -lhSWn
to $(TEST_READELF).
(gnu_property_test): Pass --build-id to ld.
* testsuite/Makefile.in: Regenerated.
* testsuite/gnu_property_test.sh (check_alignment): New.
Use check_alignment to check the NT_GNU_PROPERTY_TYPE_0 note
alignment. Verify that there are 2 PT_NOTE segments.
Diffstat (limited to 'gold/output.h')
| -rw-r--r-- | gold/output.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/gold/output.h b/gold/output.h index 77b6697..35170c3 100644 --- a/gold/output.h +++ b/gold/output.h @@ -4688,6 +4688,16 @@ class Output_segment offset() const { return this->offset_; } + // Return the segment alignment. + uint64_t + align() const + { return this->align_; } + + // Set the segment alignment. + void + set_align(uint64_t align) + { this->align_ = align; } + // Whether this is a segment created to hold large data sections. bool is_large_data_segment() const @@ -4910,6 +4920,8 @@ class Output_segment uint64_t paddr_; // The size of the segment in memory. uint64_t memsz_; + // The segment alignment. + uint64_t align_; // The maximum section alignment. The is_max_align_known_ field // indicates whether this has been finalized. uint64_t max_align_; |