On 08/16/2016 11:24 PM, Liav Rehana wrote:
> From: Liav Rehana
>
> User mode callee regs are explicitly collected before signal delivery
> or breakpoint trap. r25 is special for kernel as it serves as task
> pointer, so user mode value is clobbered very early. It is saved in
> pt_regs where genera
perf tools build in recent kernels spews splat when cross compiling with uClibc
| CC util/alias.o
| In file included from tools/perf/util/../ui/../util/cache.h:8:0,
| from tools/perf/util/../ui/helpline.h:7,
| from tools/perf/util/debug.h:8,
|
Hi Vineet,
Vineet Gupta wrote,
> The syscall ABI includes the gcc functional calling ABI since a syscall
> implies userland caller and kernel callee.
>
> The current gcc ABI (v3) for ARCv2 ISA required 64-bit data be passed in
> even-odd register pairs, (potentially punching reg holes when passin
