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| author | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2022-07-29 08:00:06 +0100 |
|---|---|---|
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2022-10-28 11:14:54 +0100 |
| commit | 09c6c6073c925235b385af1d8edf6bc853eeaf60 (patch) | |
| tree | ff27c2e74c28ae5548408d0ee09fbf42e141df32 | |
| parent | dd31f42e39206bc69f4a60e47ee117f6c968138c (diff) | |
| download | glibc-09c6c6073c925235b385af1d8edf6bc853eeaf60.zip glibc-09c6c6073c925235b385af1d8edf6bc853eeaf60.tar.gz glibc-09c6c6073c925235b385af1d8edf6bc853eeaf60.tar.bz2 | |
aarch64: Fix the extension header write in getcontext and swapcontext
The extension header is two 32bit words and in the last header both
should be 0. There is plenty space in the __reserved area, but it's
better not to write more than we mean to.
| -rw-r--r-- | sysdeps/unix/sysv/linux/aarch64/getcontext.S | 4 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/aarch64/swapcontext.S | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/sysdeps/unix/sysv/linux/aarch64/getcontext.S b/sysdeps/unix/sysv/linux/aarch64/getcontext.S index 15fbd2d..3109cbd 100644 --- a/sysdeps/unix/sysv/linux/aarch64/getcontext.S +++ b/sysdeps/unix/sysv/linux/aarch64/getcontext.S @@ -86,8 +86,8 @@ ENTRY(__getcontext) /* Write the termination context extension header. */ add x2, x2, #FPSIMD_CONTEXT_SIZE - str xzr, [x2, #oHEAD + oMAGIC] - str xzr, [x2, #oHEAD + oSIZE] + str wzr, [x2, #oHEAD + oMAGIC] + str wzr, [x2, #oHEAD + oSIZE] /* Grab the signal mask */ /* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */ diff --git a/sysdeps/unix/sysv/linux/aarch64/swapcontext.S b/sysdeps/unix/sysv/linux/aarch64/swapcontext.S index 1ee2e40..e3ec9da 100644 --- a/sysdeps/unix/sysv/linux/aarch64/swapcontext.S +++ b/sysdeps/unix/sysv/linux/aarch64/swapcontext.S @@ -75,8 +75,8 @@ ENTRY(__swapcontext) /* Write the termination context extension header. */ add x2, x2, #FPSIMD_CONTEXT_SIZE - str xzr, [x2, #oHEAD + oMAGIC] - str xzr, [x2, #oHEAD + oSIZE] + str wzr, [x2, #oHEAD + oMAGIC] + str wzr, [x2, #oHEAD + oSIZE] /* Preserve ucp. */ mov x21, x1 |