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69 lines
1.6 KiB
69 lines
1.6 KiB
/* 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 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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