/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_SH_SYSCALL_32_H
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#define __ASM_SH_SYSCALL_32_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 <linux/err.h>
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#include <asm/ptrace.h>
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/* The system call number is given by the user in R3 */
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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->tra >= 0) ? regs->regs[3] : -1L;
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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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/*
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* XXX: This needs some thought. On SH we don't
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* save away the original r0 value anywhere.
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*/
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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->regs[0]) ? regs->regs[0] : 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->regs[0];
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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->regs[0] = (long) error ?: val;
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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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/* Argument pattern is: R4, R5, R6, R7, R0, R1 */
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args[5] = regs->regs[1];
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args[4] = regs->regs[0];
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args[3] = regs->regs[7];
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args[2] = regs->regs[6];
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args[1] = regs->regs[5];
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args[0] = regs->regs[4];
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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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regs->regs[1] = args[5];
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regs->regs[0] = args[4];
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regs->regs[7] = args[3];
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regs->regs[6] = args[2];
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regs->regs[5] = args[1];
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regs->regs[4] = args[0];
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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_SH;
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#ifdef CONFIG_CPU_LITTLE_ENDIAN
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arch |= __AUDIT_ARCH_LE;
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#endif
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return arch;
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}
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#endif /* __ASM_SH_SYSCALL_32_H */
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