Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
69 lines
1.4 KiB
C
69 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Some parts derived from x86 version of this file.
|
|
*
|
|
* Copyright (C) 2013 Cavium, Inc.
|
|
*/
|
|
|
|
#include <linux/perf_event.h>
|
|
|
|
#include <asm/ptrace.h>
|
|
|
|
#ifdef CONFIG_32BIT
|
|
u64 perf_reg_abi(struct task_struct *tsk)
|
|
{
|
|
return PERF_SAMPLE_REGS_ABI_32;
|
|
}
|
|
#else /* Must be CONFIG_64BIT */
|
|
u64 perf_reg_abi(struct task_struct *tsk)
|
|
{
|
|
if (test_tsk_thread_flag(tsk, TIF_32BIT_REGS))
|
|
return PERF_SAMPLE_REGS_ABI_32;
|
|
else
|
|
return PERF_SAMPLE_REGS_ABI_64;
|
|
}
|
|
#endif /* CONFIG_32BIT */
|
|
|
|
int perf_reg_validate(u64 mask)
|
|
{
|
|
if (!mask)
|
|
return -EINVAL;
|
|
if (mask & ~((1ull << PERF_REG_MIPS_MAX) - 1))
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
u64 perf_reg_value(struct pt_regs *regs, int idx)
|
|
{
|
|
long v;
|
|
|
|
switch (idx) {
|
|
case PERF_REG_MIPS_PC:
|
|
v = regs->cp0_epc;
|
|
break;
|
|
case PERF_REG_MIPS_R1 ... PERF_REG_MIPS_R25:
|
|
v = regs->regs[idx - PERF_REG_MIPS_R1 + 1];
|
|
break;
|
|
case PERF_REG_MIPS_R28 ... PERF_REG_MIPS_R31:
|
|
v = regs->regs[idx - PERF_REG_MIPS_R28 + 28];
|
|
break;
|
|
|
|
default:
|
|
WARN_ON_ONCE(1);
|
|
return 0;
|
|
}
|
|
|
|
return (s64)v; /* Sign extend if 32-bit. */
|
|
}
|
|
|
|
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);
|
|
}
|