45 lines
924 B
C
45 lines
924 B
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/* Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd. */
|
||
|
|
|
||
|
|
#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_RISCV_MAX))
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
return ((unsigned long *)regs)[idx];
|
||
|
|
}
|
||
|
|
|
||
|
|
#define REG_RESERVED (~((1ULL << PERF_REG_RISCV_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)
|
||
|
|
{
|
||
|
|
#if __riscv_xlen == 64
|
||
|
|
return PERF_SAMPLE_REGS_ABI_64;
|
||
|
|
#else
|
||
|
|
return PERF_SAMPLE_REGS_ABI_32;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
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);
|
||
|
|
}
|