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| author | Richard Henderson <rth@redhat.com> | 2014-05-20 16:17:20 -0400 |
|---|---|---|
| committer | Richard Henderson <rth@redhat.com> | 2014-05-29 12:39:03 -0400 |
| commit | a17e5ffb80a17449add001ff7901e317afa6f632 (patch) | |
| tree | f348aa50e000c1392863dc495b7a6a7a08f8f6f0 | |
| parent | b5be4597716eff94149f5529c8eb2cd3b4296188 (diff) | |
| download | glibc-a17e5ffb80a17449add001ff7901e317afa6f632.zip glibc-a17e5ffb80a17449add001ff7901e317afa6f632.tar.gz glibc-a17e5ffb80a17449add001ff7901e317afa6f632.tar.bz2 | |
aarch64: Use tpidr_el0 rather than __read_tp in librt
| -rw-r--r-- | ChangeLog | 4 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/aarch64/nptl/sysdep-cancel.h | 14 |
2 files changed, 7 insertions, 11 deletions
@@ -1,5 +1,9 @@ 2014-05-29 Richard Henderson <rth@twiddle.net> + * sysdeps/unix/sysv/linux/aarch64/nptl/sysdep-cancel.h + [!NOT_IN_libc] (SINGLE_THREAD_P): Use tpidr_el0 instead of a + call to __read_tp. + * sysdeps/unix/sysv/linux/aarch64/nptl/sysdep-cancel.h (PSEUDO): Always allocate 64 bytes of stack frame. Use ldp/stp to create it and break it down. diff --git a/sysdeps/unix/sysv/linux/aarch64/nptl/sysdep-cancel.h b/sysdeps/unix/sysv/linux/aarch64/nptl/sysdep-cancel.h index 0f5bb51..546ed7b 100644 --- a/sysdeps/unix/sysv/linux/aarch64/nptl/sysdep-cancel.h +++ b/sysdeps/unix/sysv/linux/aarch64/nptl/sysdep-cancel.h @@ -113,17 +113,9 @@ extern int __local_multiple_threads attribute_hidden; header.multiple_threads) == 0, 1) # else # define SINGLE_THREAD_P(R) \ - stp x0, x30, [sp, -16]!; \ - cfi_adjust_cfa_offset (16); \ - cfi_rel_offset (x0, 0); \ - cfi_rel_offset (x30, 8); \ - bl __read_tp; \ - sub x0, x0, PTHREAD_SIZEOF; \ - ldr w##R, [x0, PTHREAD_MULTIPLE_THREADS_OFFSET]; \ - ldp x0, x30, [sp], 16; \ - cfi_restore (x0); \ - cfi_restore (x30); \ - cfi_adjust_cfa_offset (-16) + mrs x##R, tpidr_el0; \ + sub x##R, x##R, PTHREAD_SIZEOF; \ + ldr w##R, [x##R, PTHREAD_MULTIPLE_THREADS_OFFSET] # endif # endif |