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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 /ports/ChangeLog.arm | |
| parent | 497b1e69f9ad6d11341735d81b7c9181d168df90 (diff) | |
| download | glibc-2f10c4d6901e7a4c4ad294cc5bb8ece6547f4f62.tar.gz glibc-2f10c4d6901e7a4c4ad294cc5bb8ece6547f4f62.tar.xz glibc-2f10c4d6901e7a4c4ad294cc5bb8ece6547f4f62.zip | |
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 'ports/ChangeLog.arm')
| -rw-r--r-- | ports/ChangeLog.arm | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/ports/ChangeLog.arm b/ports/ChangeLog.arm index 353c3d6444..4371b3ccfb 100644 --- a/ports/ChangeLog.arm +++ b/ports/ChangeLog.arm @@ -1,3 +1,13 @@ +2014-01-14 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. + 2014-01-10 Roland McGrath <roland@hack.frob.com> * sysdeps/arm/arm-mcount.S: |