Wayne Ren 56650aff7e arch: arc: fix the bug in prologue of sys call handling ... * the old codes may not save the caller saved regs correctly, e.g. r7- r12. Because the sys call entry is called in the form of static inline function. The compiler optimizations may not save all the caller saved regs. * new codes use the irq stack frame as the sys call frame and gurantee all the called saved regs are pushed and popped correctly. * the side effect of new codes are more stack operations and a little overhead. Signed-off-by: Wayne Ren <wei.ren@synopsys.com>		2019-10-01 09:22:30 -04:00
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core	arch: arc: fix the bug in prologue of sys call handling	2019-10-01 09:22:30 -04:00
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