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| author | Omair Javaid <omair.javaid@linaro.org> | 2018-05-26 05:58:51 +0500 |
|---|---|---|
| committer | Omair Javaid <omair.javaid@linaro.org> | 2018-05-31 07:31:21 +0500 |
| commit | 5969f0dba74e17c694faf333b120f1e0b95783ed (patch) | |
| tree | 5b1969d7d5c41099b6e0ec201fbad028b264b4f3 /libiberty | |
| parent | 0034eed03a7428c4902244a33a286763bca65016 (diff) | |
| download | gdb-5969f0dba74e17c694faf333b120f1e0b95783ed.zip gdb-5969f0dba74e17c694faf333b120f1e0b95783ed.tar.gz gdb-5969f0dba74e17c694faf333b120f1e0b95783ed.tar.bz2 | |
Unset gdbarch significant_addr_bit by default
This patch fixes a bug introduced by fix to AArch64 pointer tagging.
In our fix for tagged pointer support our agreed approach was to sign
extend user-space address after clearing tag bits. This is not same
for all architectures and this patch allows sign extension for
addresses on targets which specifically set significant_addr_bit.
More information about patch that caused the issues and discussion
around tagged pointer support can be found in links below:
https://sourceware.org/ml/gdb-patches/2018-05/msg00000.html
https://sourceware.org/ml/gdb-patches/2017-12/msg00159.html
gdb/ChangeLog:
2018-05-31 Omair Javaid <omair.javaid@linaro.org>
PR gdb/23210
* gdbarch.sh (significant_addr_bit): Default to zero when
not set by target architecture.
* gdbarch.c: Re-generated.
* utils.c (address_significant): Update.
Diffstat (limited to 'libiberty')
0 files changed, 0 insertions, 0 deletions