diff options
| author | Anton Kolesov <anton.kolesov@synopsys.com> | 2014-07-31 17:24:42 +0400 |
|---|---|---|
| committer | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2014-08-03 11:20:47 +0200 |
| commit | cbffd50561f7ce595296bddaf108031e501b2063 (patch) | |
| tree | 9a2a41c311852e692e43ca1afba17446d94fe1e2 /toolchain/toolchain-common.in | |
| parent | 21205fced532ff875b32e9492e67e0a1908598d5 (diff) | |
toolchain: Add config option for atomic intrinsics
GCC has several builtin functions that implement atomic operations. Those
functions are architecture specific and may not be implemented by the
specific toolchain. In case of GCC for ARC those functions rely on
LLOCK/SCOND instructions which are optional in ARC CPU's. If ARC CPU doesn't
support those instructions but software tries to use them, then application
will be aborted with Illegal instruction exception. To avoid confusion user
should first specify that their CPU supports atomic extension, which will
allow selection of packages that use builtin atomic functions.
Signed-off-by: Anton Kolesov <Anton.Kolesov@synopsys.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Diffstat (limited to 'toolchain/toolchain-common.in')
| -rw-r--r-- | toolchain/toolchain-common.in | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/toolchain/toolchain-common.in b/toolchain/toolchain-common.in index 2df8ddb63..48ba8400c 100644 --- a/toolchain/toolchain-common.in +++ b/toolchain/toolchain-common.in @@ -44,6 +44,10 @@ config BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS config BR2_TOOLCHAIN_HAS_SSP bool +config BR2_TOOLCHAIN_HAS_ATOMIC_INTRINSICS + bool + default y if !BR2_arc + config BR2_ENABLE_LOCALE_PURGE bool "Purge unwanted locales" help |