| Message ID | 20181109200949.5170-1-abrodkin@synopsys.com |
|---|---|
| State | Accepted |
| Headers | show |
| Series | [v2] toolchain: Enable Glibc for all little-endian ARCs with atomic ops | expand |
Hello, On Fri, 9 Nov 2018 23:09:49 +0300, Alexey Brodkin wrote: > 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@synopsys.com> > Cc: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> > Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com> > Cc: Peter Korsgaard <peter@korsgaard.com> > --- Applied to master, thanks. Thomas
diff --git a/toolchain/toolchain-buildroot/Config.in b/toolchain/toolchain-buildroot/Config.in index 7d9428c70ed0..beb17a218b57 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 && BR2_ARC_ATOMIC_EXT) depends on BR2_USE_MMU depends on !BR2_STATIC_LIBS depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
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@synopsys.com> Cc: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Cc: Peter Korsgaard <peter@korsgaard.com> --- Changes v1 -> v2 * Merge both conditions in one place [Thomas] toolchain/toolchain-buildroot/Config.in | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)