^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #ifndef __ASM_MICROBLAZE_SYSCALL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define __ASM_MICROBLAZE_SYSCALL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <uapi/linux/audit.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <asm/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) /* The system call number is given by the user in R12 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) static inline long syscall_get_nr(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) return regs->r12;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) static inline void syscall_rollback(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) /* TODO. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static inline long syscall_get_error(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) return IS_ERR_VALUE(regs->r3) ? regs->r3 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static inline long syscall_get_return_value(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) return regs->r3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static inline void syscall_set_return_value(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct pt_regs *regs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) int error, long val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) regs->r3 = -error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) regs->r3 = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static inline microblaze_reg_t microblaze_get_syscall_arg(struct pt_regs *regs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) unsigned int n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) switch (n) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) case 5: return regs->r10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) case 4: return regs->r9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) case 3: return regs->r8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) case 2: return regs->r7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) case 1: return regs->r6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) case 0: return regs->r5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return ~0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static inline void microblaze_set_syscall_arg(struct pt_regs *regs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) unsigned int n,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) unsigned long val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) switch (n) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) case 5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) regs->r10 = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) regs->r9 = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) case 3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) regs->r8 = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) regs->r7 = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) regs->r6 = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) regs->r5 = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) static inline void syscall_get_arguments(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct pt_regs *regs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) unsigned long *args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) unsigned int i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) unsigned int n = 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) while (n--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) *args++ = microblaze_get_syscall_arg(regs, i++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static inline void syscall_set_arguments(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct pt_regs *regs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) const unsigned long *args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) unsigned int i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) unsigned int n = 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) while (n--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) microblaze_set_syscall_arg(regs, i++, *args++);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) asmlinkage unsigned long do_syscall_trace_enter(struct pt_regs *regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) asmlinkage void do_syscall_trace_leave(struct pt_regs *regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static inline int syscall_get_arch(struct task_struct *task)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return AUDIT_ARCH_MICROBLAZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #endif /* __ASM_MICROBLAZE_SYSCALL_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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