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32d9258662
After removing the start and count arguments of syscall_get_arguments() it seems reasonable to remove them from syscall_set_arguments(). Note, as of today, there are no users of syscall_set_arguments(). But we are told that there will be soon. But for now, at least make it consistent with syscall_get_arguments(). Link: http://lkml.kernel.org/r/20190327222014.GA32540@altlinux.org Cc: Oleg Nesterov <oleg@redhat.com> Cc: Kees Cook <keescook@chromium.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Dave Martin <dave.martin@arm.com> Cc: "Dmitry V. Levin" <ldv@altlinux.org> Cc: x86@kernel.org Cc: linux-snps-arc@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-c6x-dev@linux-c6x.org Cc: uclinux-h8-devel@lists.sourceforge.jp Cc: linux-hexagon@vger.kernel.org Cc: linux-ia64@vger.kernel.org Cc: linux-mips@vger.kernel.org Cc: nios2-dev@lists.rocketboards.org Cc: openrisc@lists.librecores.org Cc: linux-parisc@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-riscv@lists.infradead.org Cc: linux-s390@vger.kernel.org Cc: linux-sh@vger.kernel.org Cc: sparclinux@vger.kernel.org Cc: linux-um@lists.infradead.org Cc: linux-xtensa@linux-xtensa.org Cc: linux-arch@vger.kernel.org Acked-by: Max Filippov <jcmvbkbc@gmail.com> # For xtensa changes Acked-by: Will Deacon <will.deacon@arm.com> # For the arm64 bits Reviewed-by: Thomas Gleixner <tglx@linutronix.de> # for x86 Reviewed-by: Dmitry V. Levin <ldv@altlinux.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
113 lines
2.3 KiB
C
113 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_MICROBLAZE_SYSCALL_H
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#define __ASM_MICROBLAZE_SYSCALL_H
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#include <uapi/linux/audit.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <asm/ptrace.h>
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/* The system call number is given by the user in R12 */
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static inline long syscall_get_nr(struct task_struct *task,
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struct pt_regs *regs)
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{
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return regs->r12;
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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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/* TODO. */
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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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return IS_ERR_VALUE(regs->r3) ? regs->r3 : 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->r3;
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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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if (error)
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regs->r3 = -error;
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else
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regs->r3 = val;
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}
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static inline microblaze_reg_t microblaze_get_syscall_arg(struct pt_regs *regs,
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unsigned int n)
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{
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switch (n) {
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case 5: return regs->r10;
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case 4: return regs->r9;
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case 3: return regs->r8;
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case 2: return regs->r7;
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case 1: return regs->r6;
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case 0: return regs->r5;
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default:
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BUG();
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}
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return ~0;
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}
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static inline void microblaze_set_syscall_arg(struct pt_regs *regs,
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unsigned int n,
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unsigned long val)
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{
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switch (n) {
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case 5:
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regs->r10 = val;
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case 4:
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regs->r9 = val;
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case 3:
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regs->r8 = val;
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case 2:
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regs->r7 = val;
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case 1:
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regs->r6 = val;
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case 0:
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regs->r5 = val;
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default:
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BUG();
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}
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}
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static inline void syscall_get_arguments(struct task_struct *task,
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struct pt_regs *regs,
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unsigned long *args)
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{
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unsigned int i = 0;
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unsigned int n = 6;
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while (n--)
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*args++ = microblaze_get_syscall_arg(regs, i++);
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}
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static inline void syscall_set_arguments(struct task_struct *task,
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struct pt_regs *regs,
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const unsigned long *args)
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{
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unsigned int i = 0;
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unsigned int n = 6;
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while (n--)
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microblaze_set_syscall_arg(regs, i++, *args++);
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}
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asmlinkage unsigned long do_syscall_trace_enter(struct pt_regs *regs);
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asmlinkage void do_syscall_trace_leave(struct pt_regs *regs);
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static inline int syscall_get_arch(void)
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{
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return AUDIT_ARCH_MICROBLAZE;
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}
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#endif /* __ASM_MICROBLAZE_SYSCALL_H */
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