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kumquat-buildroot/arch/Config.in.arc

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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>
2014-07-31 15:24:42 +02:00
# Choise of atomic instructions presence
config BR2_ARC_ATOMIC_EXT
bool "Atomic extension (LLOCK/SCOND instructions)"
arch: add an option to specify if the arch has atomic ops The fact that atomic operations are available is not really a specificity of the toolchain, but rather of the architecture. So, add a new option that architectures that have atomic operations can select. This in turn selects the current toolchain atomic option, until all packages have been converted, at which point the old toolchain option can be removed. Reported-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Anton Kolesov <Anton.Kolesov@synopsys.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-08-17 21:29:40 +02:00
select BR2_ARCH_HAS_ATOMICS
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>
2014-07-31 15:24:42 +02:00
arc: Add ARC and ARC BE architecture Synopsys' DesignWare ARC Processor Cores are a family of 32-bit CPUs that can be used from deeply embedded to high performance host applications. Signed-off-by: Mischa Jonker <mjonker@synopsys.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2013-05-02 11:51:23 +02:00
config BR2_ARCH
default "arc" if BR2_arcle
default "arceb" if BR2_arceb
config BR2_arc
bool
default y if BR2_arcle || BR2_arceb
config BR2_ENDIAN
default "LITTLE" if BR2_arcle
default "BIG" if BR2_arceb
config BR2_GCC_TARGET_CPU
default "arc700"
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