mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-12-28 06:44:36 -05:00
3317aaca33
No functional modification involved. ./arch/parisc/kernel/perf_regs.c:30:2-3: Unneeded semicolon. Reported-by: Abaci Robot <abaci@linux.alibaba.com> Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=26159 Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202511090323.OwYsZkev-lkp@intel.com/ Signed-off-by: Helge Deller <deller@gmx.de>
62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
/* Copyright (C) 2025 by Helge Deller <deller@gmx.de> */
|
|
|
|
#include <linux/perf_event.h>
|
|
#include <linux/perf_regs.h>
|
|
#include <asm/ptrace.h>
|
|
|
|
u64 perf_reg_value(struct pt_regs *regs, int idx)
|
|
{
|
|
switch (idx) {
|
|
case PERF_REG_PARISC_R0 ... PERF_REG_PARISC_R31:
|
|
return regs->gr[idx - PERF_REG_PARISC_R0];
|
|
case PERF_REG_PARISC_SR0 ... PERF_REG_PARISC_SR7:
|
|
return regs->sr[idx - PERF_REG_PARISC_SR0];
|
|
case PERF_REG_PARISC_IASQ0 ... PERF_REG_PARISC_IASQ1:
|
|
return regs->iasq[idx - PERF_REG_PARISC_IASQ0];
|
|
case PERF_REG_PARISC_IAOQ0 ... PERF_REG_PARISC_IAOQ1:
|
|
return regs->iasq[idx - PERF_REG_PARISC_IAOQ0];
|
|
case PERF_REG_PARISC_SAR: /* CR11 */
|
|
return regs->sar;
|
|
case PERF_REG_PARISC_IIR: /* CR19 */
|
|
return regs->iir;
|
|
case PERF_REG_PARISC_ISR: /* CR20 */
|
|
return regs->isr;
|
|
case PERF_REG_PARISC_IOR: /* CR21 */
|
|
return regs->ior;
|
|
case PERF_REG_PARISC_IPSW: /* CR22 */
|
|
return regs->ipsw;
|
|
}
|
|
WARN_ON_ONCE((u32)idx >= PERF_REG_PARISC_MAX);
|
|
return 0;
|
|
}
|
|
|
|
#define REG_RESERVED (~((1ULL << PERF_REG_PARISC_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 (!IS_ENABLED(CONFIG_64BIT))
|
|
return PERF_SAMPLE_REGS_ABI_32;
|
|
|
|
if (test_tsk_thread_flag(task, TIF_32BIT))
|
|
return PERF_SAMPLE_REGS_ABI_32;
|
|
|
|
return PERF_SAMPLE_REGS_ABI_64;
|
|
}
|
|
|
|
void perf_get_regs_user(struct perf_regs *regs_user,
|
|
struct pt_regs *regs)
|
|
{
|
|
regs_user->regs = task_pt_regs(current);
|
|
regs_user->abi = perf_reg_abi(current);
|
|
}
|