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| author | Will Newton <will.newton@linaro.org> | 2013-12-10 16:26:38 +0000 |
|---|---|---|
| committer | Will Newton <will.newton@linaro.org> | 2014-01-14 14:02:34 +0000 |
| commit | 2f10c4d6901e7a4c4ad294cc5bb8ece6547f4f62 (patch) | |
| tree | 9694325d2c26b777f46a0e6b68eedc818b731896 /shadow | |
| parent | 497b1e69f9ad6d11341735d81b7c9181d168df90 (diff) | |
| download | glibc-2f10c4d6901e7a4c4ad294cc5bb8ece6547f4f62.zip glibc-2f10c4d6901e7a4c4ad294cc5bb8ece6547f4f62.tar.gz glibc-2f10c4d6901e7a4c4ad294cc5bb8ece6547f4f62.tar.bz2 | |
ARM: Don't apply pointer encryption to the frame pointer
The frame pointer register is rarely used for that purpose on ARM and
applications that look at the contents of the jmp_buf may be relying
on reading an unencrypted value. For example, Ruby uses the contents
of jmp_buf to find the root set for garbage collection so relies on
this pointer value being unencrypted. Without this patch the Ruby
testsuite fails with a segmentation fault.
ports/ChangeLog.arm:
2013-01-14 Will Newton <will.newton@linaro.org>
* sysdeps/arm/__longjmp.S: Don't apply pointer encryption
to fp register.
* sysdeps/arm/setjmp.S: Likewise.
* sysdeps/arm/include/bits/setjmp.h (JMP_BUF_REGLIST): Add
fp to register list, remove a4.
* sysdeps/unix/sysv/linux/arm/sysdep.h (PTR_MANGLE_LOAD):
New macro.
Diffstat (limited to 'shadow')
0 files changed, 0 insertions, 0 deletions