[deliverable/linux.git] / arch / arm / kernel / perf_regs.c


#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;
}

void perf_get_regs_user(struct perf_regs *regs_user,
			struct pt_regs *regs,
			struct pt_regs *regs_user_copy)
{
	regs_user->regs = task_pt_regs(current);
	regs_user->abi = perf_reg_abi(current);
}
Commit	Line	Data
49863894 WD	1
	2	#include <linux/errno.h>
	3	#include <linux/kernel.h>
	4	#include <linux/perf_event.h>
	5	#include <linux/bug.h>
	6	#include <asm/perf_regs.h>
	7	#include <asm/ptrace.h>
	8
	9	u64 perf_reg_value(struct pt_regs *regs, int idx)
	10	{
	11	if (WARN_ON_ONCE((u32)idx >= PERF_REG_ARM_MAX))
	12	return 0;
	13
	14	return regs->uregs[idx];
	15	}
	16
	17	#define REG_RESERVED (~((1ULL << PERF_REG_ARM_MAX) - 1))
	18
	19	int perf_reg_validate(u64 mask)
	20	{
	21	if (!mask \|\| mask & REG_RESERVED)
	22	return -EINVAL;
	23
	24	return 0;
	25	}
	26
	27	u64 perf_reg_abi(struct task_struct *task)
	28	{
	29	return PERF_SAMPLE_REGS_ABI_32;
	30	}
88a7c26a AL	31
	32	void perf_get_regs_user(struct perf_regs *regs_user,
	33	struct pt_regs *regs,
	34	struct pt_regs *regs_user_copy)
	35	{
	36	regs_user->regs = task_pt_regs(current);
	37	regs_user->abi = perf_reg_abi(current);
	38	}