mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
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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
1.8 KiB
C
87 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* syscall.h */
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#ifndef _ASM_PARISC_SYSCALL_H_
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#define _ASM_PARISC_SYSCALL_H_
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#include <uapi/linux/audit.h>
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#include <linux/compat.h>
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#include <linux/err.h>
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#include <asm/ptrace.h>
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#define NR_syscalls (__NR_Linux_syscalls)
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static inline long syscall_get_nr(struct task_struct *tsk,
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struct pt_regs *regs)
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{
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return regs->gr[20];
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}
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static inline void syscall_set_nr(struct task_struct *tsk,
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struct pt_regs *regs,
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int nr)
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{
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regs->gr[20] = nr;
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}
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static inline void syscall_get_arguments(struct task_struct *tsk,
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struct pt_regs *regs,
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unsigned long *args)
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{
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args[5] = regs->gr[21];
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args[4] = regs->gr[22];
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args[3] = regs->gr[23];
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args[2] = regs->gr[24];
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args[1] = regs->gr[25];
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args[0] = regs->gr[26];
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}
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static inline void syscall_set_arguments(struct task_struct *tsk,
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struct pt_regs *regs,
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unsigned long *args)
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{
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regs->gr[21] = args[5];
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regs->gr[22] = args[4];
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regs->gr[23] = args[3];
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regs->gr[24] = args[2];
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regs->gr[25] = args[1];
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regs->gr[26] = args[0];
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}
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static inline long syscall_get_error(struct task_struct *task,
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struct pt_regs *regs)
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{
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unsigned long error = regs->gr[28];
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return IS_ERR_VALUE(error) ? error : 0;
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}
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static inline long syscall_get_return_value(struct task_struct *task,
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struct pt_regs *regs)
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{
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return regs->gr[28];
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}
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static inline void syscall_set_return_value(struct task_struct *task,
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struct pt_regs *regs,
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int error, long val)
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{
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regs->gr[28] = error ? error : val;
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}
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static inline void syscall_rollback(struct task_struct *task,
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struct pt_regs *regs)
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{
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/* do nothing */
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}
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static inline int syscall_get_arch(struct task_struct *task)
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{
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int arch = AUDIT_ARCH_PARISC;
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#ifdef CONFIG_64BIT
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if (!__is_compat_task(task))
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arch = AUDIT_ARCH_PARISC64;
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#endif
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return arch;
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}
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#endif /*_ASM_PARISC_SYSCALL_H_*/
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