mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-10-30 22:03:17 +01:00
Dmitry V. Levin
cc6622730b
Similar to syscall_set_arguments() that complements syscall_get_arguments(), introduce syscall_set_nr() that complements syscall_get_nr(). syscall_set_nr() is going to be needed along with syscall_set_arguments() on all HAVE_ARCH_TRACEHOOK architectures to implement PTRACE_SET_SYSCALL_INFO API. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Dmitry V. Levin <[email protected]> Tested-by: Charlie Jenkins <[email protected]> Reviewed-by: Charlie Jenkins <[email protected]> Acked-by: Helge Deller <[email protected]> # parisc Reviewed-by: Maciej W. Rozycki <[email protected]> # mips Cc: Alexander Gordeev <[email protected]> Cc: Alexey Gladkov (Intel) <[email protected]> Cc: Andreas Larsson <[email protected]> Cc: anton ivanov <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Borislav Betkov <[email protected]> Cc: Brian Cain <[email protected]> Cc: Christian Borntraeger <[email protected]> Cc: Christian Zankel <[email protected]> Cc: Christophe Leroy <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Davide Berardi <[email protected]> Cc: David S. Miller <[email protected]> Cc: Dinh Nguyen <[email protected]> Cc: Eugene Syromiatnikov <[email protected]> Cc: Eugene Syromyatnikov <[email protected]> Cc: Geert Uytterhoeven <[email protected]> Cc: Guo Ren <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Huacai Chen <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Johannes Berg <[email protected]> Cc: John Paul Adrian Glaubitz <[email protected]> Cc: Jonas Bonn <[email protected]> Cc: Madhavan Srinivasan <[email protected]> Cc: Max Filippov <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: Michal Simek <[email protected]> Cc: Mike Frysinger <[email protected]> Cc: Naveen N Rao <[email protected]> Cc: Nicholas Piggin <[email protected]> Cc: Oleg Nesterov <[email protected]> Cc: Renzo Davoi <[email protected]> Cc: Richard Weinberger <[email protected]> Cc: Rich Felker <[email protected]> Cc: Russel King <[email protected]> Cc: Shuah Khan <[email protected]> Cc: Stafford Horne <[email protected]> Cc: Stefan Kristiansson <[email protected]> Cc: Sven Schnelle <[email protected]> Cc: Thomas Gleinxer <[email protected]> Cc: Vasily Gorbik <[email protected]> Cc: Vineet Gupta <[email protected]> Cc: WANG Xuerui <[email protected]> Cc: Will Deacon <[email protected]> Cc: Yoshinori Sato <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
87 lines
1.9 KiB
C
87 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __ASM_MICROBLAZE_SYSCALL_H
|
|
#define __ASM_MICROBLAZE_SYSCALL_H
|
|
|
|
#include <uapi/linux/audit.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/sched.h>
|
|
#include <asm/ptrace.h>
|
|
|
|
/* The system call number is given by the user in R12 */
|
|
static inline long syscall_get_nr(struct task_struct *task,
|
|
struct pt_regs *regs)
|
|
{
|
|
return regs->r12;
|
|
}
|
|
|
|
static inline void syscall_set_nr(struct task_struct *task,
|
|
struct pt_regs *regs,
|
|
int nr)
|
|
{
|
|
regs->r12 = nr;
|
|
}
|
|
|
|
static inline void syscall_rollback(struct task_struct *task,
|
|
struct pt_regs *regs)
|
|
{
|
|
/* TODO. */
|
|
}
|
|
|
|
static inline long syscall_get_error(struct task_struct *task,
|
|
struct pt_regs *regs)
|
|
{
|
|
return IS_ERR_VALUE(regs->r3) ? regs->r3 : 0;
|
|
}
|
|
|
|
static inline long syscall_get_return_value(struct task_struct *task,
|
|
struct pt_regs *regs)
|
|
{
|
|
return regs->r3;
|
|
}
|
|
|
|
static inline void syscall_set_return_value(struct task_struct *task,
|
|
struct pt_regs *regs,
|
|
int error, long val)
|
|
{
|
|
if (error)
|
|
regs->r3 = -error;
|
|
else
|
|
regs->r3 = val;
|
|
}
|
|
|
|
static inline microblaze_reg_t microblaze_get_syscall_arg(struct pt_regs *regs,
|
|
unsigned int n)
|
|
{
|
|
switch (n) {
|
|
case 5: return regs->r10;
|
|
case 4: return regs->r9;
|
|
case 3: return regs->r8;
|
|
case 2: return regs->r7;
|
|
case 1: return regs->r6;
|
|
case 0: return regs->r5;
|
|
default:
|
|
BUG();
|
|
}
|
|
return ~0;
|
|
}
|
|
|
|
static inline void syscall_get_arguments(struct task_struct *task,
|
|
struct pt_regs *regs,
|
|
unsigned long *args)
|
|
{
|
|
unsigned int i = 0;
|
|
unsigned int n = 6;
|
|
|
|
while (n--)
|
|
*args++ = microblaze_get_syscall_arg(regs, i++);
|
|
}
|
|
|
|
asmlinkage unsigned long do_syscall_trace_enter(struct pt_regs *regs);
|
|
asmlinkage void do_syscall_trace_leave(struct pt_regs *regs);
|
|
|
|
static inline int syscall_get_arch(struct task_struct *task)
|
|
{
|
|
return AUDIT_ARCH_MICROBLAZE;
|
|
}
|
|
#endif /* __ASM_MICROBLAZE_SYSCALL_H */
|