diff options
| author | Torvald Riegel <triegel@redhat.com> | 2014-10-18 01:02:59 +0200 |
|---|---|---|
| committer | Torvald Riegel <triegel@redhat.com> | 2014-11-20 11:57:38 +0100 |
| commit | 1ea339b69725cb2f30b5a84cb7ca96111c9a637b (patch) | |
| tree | 130609da9190b04afb366f3a506d3415ea2f982f /sysdeps/mips/bits | |
| parent | d960211ff52a6ab632eace2f905c4898f187df9e (diff) | |
Add arch-specific configuration for C11 atomics support.
This sets __HAVE_64B_ATOMICS if provided. It also sets
USE_ATOMIC_COMPILER_BUILTINS to true if the existing atomic ops use the
__atomic* builtins (aarch64, mips partially) or if this has been
tested (x86_64); otherwise, this is set to false so that C11 atomics will
be based on the existing atomic operations.
Diffstat (limited to 'sysdeps/mips/bits')
| -rw-r--r-- | sysdeps/mips/bits/atomic.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sysdeps/mips/bits/atomic.h b/sysdeps/mips/bits/atomic.h index 35b3786789..091b199bf8 100644 --- a/sysdeps/mips/bits/atomic.h +++ b/sysdeps/mips/bits/atomic.h @@ -44,6 +44,12 @@ typedef uintmax_t uatomic_max_t; #define MIPS_PUSH_MIPS2 #endif +#if _MIPS_SIM == _ABIO32 +#define __HAVE_64B_ATOMICS 0 +#else +#define __HAVE_64B_ATOMICS 1 +#endif + /* See the comments in <sys/asm.h> about the use of the sync instruction. */ #ifndef MIPS_SYNC # define MIPS_SYNC sync @@ -86,6 +92,8 @@ typedef uintmax_t uatomic_max_t; have no assembly alternative available and want to avoid the __sync_* builtins if at all possible. */ +#define USE_ATOMIC_COMPILER_BUILTINS 1 + /* Compare and exchange. For all "bool" routines, we return FALSE if exchange succesful. */ @@ -234,6 +242,8 @@ typedef uintmax_t uatomic_max_t; /* This implementation using inline assembly will be removed once glibc requires GCC 4.8 or later to build. */ +#define USE_ATOMIC_COMPILER_BUILTINS 0 + /* Compare and exchange. For all of the "xxx" routines, we expect a "__prev" and a "__cmp" variable to be provided by the enclosing scope, in which values are returned. */ |