ARM: perf: add support for perf registers API

	select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND

	select HAVE_OPROFILE if (HAVE_PERF_EVENTS)

	select HAVE_PERF_EVENTS

	select HAVE_PERF_REGS

	select HAVE_PERF_USER_STACK_DUMP

	select HAVE_REGS_AND_STACK_ACCESS_API

	select HAVE_SYSCALL_TRACEPOINTS

	select HAVE_UID16

header-y += ioctls.h

header-y += kvm_para.h

header-y += mman.h

header-y += perf_regs.h

header-y += posix_types.h

header-y += ptrace.h

header-y += setup.h

#ifndef _ASM_ARM_PERF_REGS_H

#define _ASM_ARM_PERF_REGS_H

enum perf_event_arm_regs {

	PERF_REG_ARM_R0,

	PERF_REG_ARM_R1,

	PERF_REG_ARM_R2,

	PERF_REG_ARM_R3,

	PERF_REG_ARM_R4,

	PERF_REG_ARM_R5,

	PERF_REG_ARM_R6,

	PERF_REG_ARM_R7,

	PERF_REG_ARM_R8,

	PERF_REG_ARM_R9,

	PERF_REG_ARM_R10,

	PERF_REG_ARM_FP,

	PERF_REG_ARM_IP,

	PERF_REG_ARM_SP,

	PERF_REG_ARM_LR,

	PERF_REG_ARM_PC,

	PERF_REG_ARM_MAX,

};

#endif /* _ASM_ARM_PERF_REGS_H */

obj-$(CONFIG_CPU_MOHAWK)	+= xscale-cp0.o

obj-$(CONFIG_CPU_PJ4)		+= pj4-cp0.o

obj-$(CONFIG_IWMMXT)		+= iwmmxt.o

obj-$(CONFIG_PERF_EVENTS)	+= perf_regs.o

obj-$(CONFIG_HW_PERF_EVENTS)	+= perf_event.o perf_event_cpu.o

AFLAGS_iwmmxt.o			:= -Wa,-mcpu=iwmmxt

obj-$(CONFIG_ARM_CPU_TOPOLOGY)  += topology.o

#include <linux/errno.h>

#include <linux/kernel.h>

#include <linux/perf_event.h>

#include <linux/bug.h>

#include <asm/perf_regs.h>

#include <asm/ptrace.h>

u64 perf_reg_value(struct pt_regs *regs, int idx)

{

	if (WARN_ON_ONCE((u32)idx >= PERF_REG_ARM_MAX))

		return 0;

	return regs->uregs[idx];

}

#define REG_RESERVED (~((1ULL << PERF_REG_ARM_MAX) - 1))

int perf_reg_validate(u64 mask)

{

	if (!mask || mask & REG_RESERVED)

		return -EINVAL;

	return 0;

}

u64 perf_reg_abi(struct task_struct *task)

{

	return PERF_SAMPLE_REGS_ABI_32;

}