1 #ifndef __ASM_SH_SYSCALL_32_H
2 #define __ASM_SH_SYSCALL_32_H
4 #include <uapi/linux/audit.h>
5 #include <linux/kernel.h>
6 #include <linux/sched.h>
8 #include <asm/ptrace.h>
10 /* The system call number is given by the user in R3 */
11 static inline long syscall_get_nr(struct task_struct *task,
14 return (regs->tra >= 0) ? regs->regs[3] : -1L;
17 static inline void syscall_rollback(struct task_struct *task,
21 * XXX: This needs some thought. On SH we don't
22 * save away the original r0 value anywhere.
26 static inline long syscall_get_error(struct task_struct *task,
29 return IS_ERR_VALUE(regs->regs[0]) ? regs->regs[0] : 0;
32 static inline long syscall_get_return_value(struct task_struct *task,
38 static inline void syscall_set_return_value(struct task_struct *task,
43 regs->regs[0] = -error;
48 static inline void syscall_get_arguments(struct task_struct *task,
50 unsigned int i, unsigned int n,
54 * Do this simply for now. If we need to start supporting
55 * fetching arguments from arbitrary indices, this will need some
56 * extra logic. Presently there are no in-tree users that depend
61 /* Argument pattern is: R4, R5, R6, R7, R0, R1 */
63 case 6: args[5] = regs->regs[1];
64 case 5: args[4] = regs->regs[0];
65 case 4: args[3] = regs->regs[7];
66 case 3: args[2] = regs->regs[6];
67 case 2: args[1] = regs->regs[5];
68 case 1: args[0] = regs->regs[4];
76 static inline void syscall_set_arguments(struct task_struct *task,
78 unsigned int i, unsigned int n,
79 const unsigned long *args)
81 /* Same note as above applies */
85 case 6: regs->regs[1] = args[5];
86 case 5: regs->regs[0] = args[4];
87 case 4: regs->regs[7] = args[3];
88 case 3: regs->regs[6] = args[2];
89 case 2: regs->regs[5] = args[1];
90 case 1: regs->regs[4] = args[0];
97 static inline int syscall_get_arch(void)
99 int arch = AUDIT_ARCH_SH;
101 #ifdef CONFIG_CPU_LITTLE_ENDIAN
102 arch |= __AUDIT_ARCH_LE;
106 #endif /* __ASM_SH_SYSCALL_32_H */