[Buildroot] [PATCH] toolchain: Enable Glibc for all little-endian ARCs with atomic ops
Alexey Brodkin
alexey.brodkin at synopsys.com
Fri Nov 9 14:00:23 UTC 2018
Initially we had a port only for ARCv2 cores but
then with a simple change ARCompact cores got supported as well.
So we generalize from BR2_archs to BR2_arcle as we haven't tried
to get glibc working on big-endian ARCs yet.
Also we never bothered to check avaialbility of atomic
instructions in the core but in case of Glibc for ARC this is
really a must, so we add this check here.
Note in case of uClibc we may have system w/o HW atomics but:
1. Only single-core systems are allowed
2. Atomic instructions are emulated via arc_usr_cmpxchg syscall
Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
Cc: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
Cc: Peter Korsgaard <peter at korsgaard.com>
---
toolchain/toolchain-buildroot/Config.in | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/toolchain/toolchain-buildroot/Config.in b/toolchain/toolchain-buildroot/Config.in
index 7d9428c70ed0..8d6997e7790b 100644
--- a/toolchain/toolchain-buildroot/Config.in
+++ b/toolchain/toolchain-buildroot/Config.in
@@ -48,7 +48,7 @@ config BR2_TOOLCHAIN_BUILDROOT_GLIBC
BR2_powerpc || BR2_powerpc64 || BR2_powerpc64le || \
BR2_riscv || BR2_sh || BR2_sparc64 || \
BR2_x86_64 || BR2_microblaze || BR2_nios2 || \
- BR2_archs38
+ BR2_arcle
depends on BR2_USE_MMU
depends on !BR2_STATIC_LIBS
depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
@@ -56,6 +56,7 @@ config BR2_TOOLCHAIN_BUILDROOT_GLIBC
depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5 || !BR2_MIPS_NAN_2008
depends on !BR2_powerpc_SPE
depends on BR2_RISCV_ISA_RVA || !BR2_riscv
+ depends on BR2_ARC_ATOMIC_EXT || !BR2_arc
select BR2_TOOLCHAIN_USES_GLIBC
# our glibc.mk enables RPC support
select BR2_TOOLCHAIN_HAS_NATIVE_RPC
--
2.19.1
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