Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/arch/xtensa/include/asm/syscall.h b/arch/xtensa/include/asm/syscall.h
index 3673ff1..359ab40 100644
--- a/arch/xtensa/include/asm/syscall.h
+++ b/arch/xtensa/include/asm/syscall.h
@@ -1,27 +1,87 @@
/*
- * include/asm-xtensa/syscall.h
- *
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2001 - 2007 Tensilica Inc.
+ * Copyright (C) 2018 Cadence Design Systems Inc.
*/
-struct pt_regs;
-asmlinkage long xtensa_ptrace(long, long, long, long);
-asmlinkage long xtensa_sigreturn(struct pt_regs*);
+#ifndef _ASM_SYSCALL_H
+#define _ASM_SYSCALL_H
+
+#include <linux/err.h>
+#include <asm/ptrace.h>
+#include <uapi/linux/audit.h>
+
+static inline int syscall_get_arch(struct task_struct *task)
+{
+ return AUDIT_ARCH_XTENSA;
+}
+
+typedef void (*syscall_t)(void);
+extern syscall_t sys_call_table[];
+
+static inline long syscall_get_nr(struct task_struct *task,
+ struct pt_regs *regs)
+{
+ return regs->syscall;
+}
+
+static inline void syscall_rollback(struct task_struct *task,
+ struct pt_regs *regs)
+{
+ /* Do nothing. */
+}
+
+static inline long syscall_get_error(struct task_struct *task,
+ struct pt_regs *regs)
+{
+ /* 0 if syscall succeeded, otherwise -Errorcode */
+ return IS_ERR_VALUE(regs->areg[2]) ? regs->areg[2] : 0;
+}
+
+static inline long syscall_get_return_value(struct task_struct *task,
+ struct pt_regs *regs)
+{
+ return regs->areg[2];
+}
+
+static inline void syscall_set_return_value(struct task_struct *task,
+ struct pt_regs *regs,
+ int error, long val)
+{
+ regs->areg[0] = (long) error ? error : val;
+}
+
+#define SYSCALL_MAX_ARGS 6
+#define XTENSA_SYSCALL_ARGUMENT_REGS {6, 3, 4, 5, 8, 9}
+
+static inline void syscall_get_arguments(struct task_struct *task,
+ struct pt_regs *regs,
+ unsigned long *args)
+{
+ static const unsigned int reg[] = XTENSA_SYSCALL_ARGUMENT_REGS;
+ unsigned int i;
+
+ for (i = 0; i < 6; ++i)
+ args[i] = regs->areg[reg[i]];
+}
+
+static inline void syscall_set_arguments(struct task_struct *task,
+ struct pt_regs *regs,
+ const unsigned long *args)
+{
+ static const unsigned int reg[] = XTENSA_SYSCALL_ARGUMENT_REGS;
+ unsigned int i;
+
+ for (i = 0; i < 6; ++i)
+ regs->areg[reg[i]] = args[i];
+}
+
asmlinkage long xtensa_rt_sigreturn(struct pt_regs*);
asmlinkage long xtensa_shmat(int, char __user *, int);
asmlinkage long xtensa_fadvise64_64(int, int,
unsigned long long, unsigned long long);
-/* Should probably move to linux/syscalls.h */
-struct pollfd;
-asmlinkage long sys_pselect6(int n, fd_set __user *inp, fd_set __user *outp,
- fd_set __user *exp, struct timespec __user *tsp,
- void __user *sig);
-asmlinkage long sys_ppoll(struct pollfd __user *ufds, unsigned int nfds,
- struct timespec __user *tsp,
- const sigset_t __user *sigmask,
- size_t sigsetsize);
+#endif