On Tue, May 05, 2020 at 04:11:56PM +0200, Arnd Bergmann wrote: > Using gcov on ARM fails when the frame pointer unwinder is used: > > arm-linux-gnueabi-ld: kernel/softirq.o:(.ARM.exidx+0x120): undefined > reference to `__aeabi_unwind_cpp_pr0' > arm-linux-gnueabi-ld: init/main.o:(.ARM.exidx+0x98): undefined reference to > `__aeabi_unwind_cpp_pr0' > arm-linux-gnueabi-ld: init/version.o:(.ARM.exidx+0x0): undefined reference to > `__aeabi_unwind_cpp_pr0' > arm-linux-gnueabi-ld: init/do_mounts.o:(.ARM.exidx+0x28): undefined reference > to `__aeabi_unwind_cpp_pr0' > arm-linux-gnueabi-ld: init/do_mounts_initrd.o:(.ARM.exidx+0x0): undefined > reference to `__aeabi_unwind_cpp_pr0' > arm-linux-gnueabi-ld: init/initramfs.o:(.ARM.exidx+0x8): more undefined > references to `__aeabi_unwind_cpp_pr0' follow > > This is likely a bug in clang that should be fixed in the compiler. > Forcing the use of the ARM unwinder in this configuration however > works around the problem.
Or should the stub functions in arch/arm/kernel/unwind.c be moved out? -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 10.2Mbps down 587kbps up
