crosstool-ng/samples/arc-arc700-linux-uclibc/crosstool.config

CT_ARCH_ARC=y
CT_TARGET_ALIAS="arc-linux"
CT_TARGET_CFLAGS="-mno-atomic"
CT_TARGET_VENDOR="snps"
CT_KERNEL_LINUX=y
CT_LIBC_UCLIBC=y
CT_ARCH_CPU="arc700"
Add ARC700 and ARC HS38 Linux samples ARC700 is based on ARCompact (AKA ARCv1 ISA) while ARC HS38 is based on modern ARCv2 ISA. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> 2018-05-15 13:37:24 +00:00			`CT_ARCH_ARC=y`
			`CT_TARGET_ALIAS="arc-linux"`
ARC: Update Linux samples There's no point in keeping samples which are in its essense just a sub-set of multilib toolchain. But still we'd like to cover quite unusual but really existing case - ARC750, i.e. ARC700 with MMU but without so-called atomic instructions (LLOCK/SCOND). To support this HW variation we need: 1) Compile all target binaries without "-matomics" or even better "-mno-atomics" so that's even future-proof (as we may decide to enable "-matomics" by default for Linux targets which is a recommented setup). 2) Configure libc such that it uses Linux-kernel-assisted implementation of atomic operation via "arc_usr_cmpxchg" syscall, see https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/commit/?id=b985fa069187e4c5a7ee84213d9fbead2f219ce5 Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> 2018-05-21 10:33:50 +00:00			`CT_TARGET_CFLAGS="-mno-atomic"`
Add ARC700 and ARC HS38 Linux samples ARC700 is based on ARCompact (AKA ARCv1 ISA) while ARC HS38 is based on modern ARCv2 ISA. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> 2018-05-15 13:37:24 +00:00			`CT_TARGET_VENDOR="snps"`
			`CT_KERNEL_LINUX=y`
			`CT_LIBC_UCLIBC=y`
			`CT_ARCH_CPU="arc700"`