ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/arch/powerpc/include/asm/syscall.h b/marvell/linux/arch/powerpc/include/asm/syscall.h
new file mode 100644
index 0000000..38d62ac
--- /dev/null
+++ b/marvell/linux/arch/powerpc/include/asm/syscall.h
@@ -0,0 +1,118 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Access to user system call parameters and results
+ *
+ * Copyright (C) 2008 Red Hat, Inc. All rights reserved.
+ *
+ * See asm-generic/syscall.h for descriptions of what we must do here.
+ */
+
+#ifndef _ASM_SYSCALL_H
+#define _ASM_SYSCALL_H 1
+
+#include <uapi/linux/audit.h>
+#include <linux/sched.h>
+#include <linux/thread_info.h>
+
+/* ftrace syscalls requires exporting the sys_call_table */
+extern const unsigned long sys_call_table[];
+extern const unsigned long compat_sys_call_table[];
+
+static inline int syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
+{
+ /*
+ * Note that we are returning an int here. That means 0xffffffff, ie.
+ * 32-bit negative 1, will be interpreted as -1 on a 64-bit kernel.
+ * This is important for seccomp so that compat tasks can set r0 = -1
+ * to reject the syscall.
+ */
+ return TRAP(regs) == 0xc00 ? regs->gpr[0] : -1;
+}
+
+static inline void syscall_rollback(struct task_struct *task,
+ struct pt_regs *regs)
+{
+ regs->gpr[3] = regs->orig_gpr3;
+}
+
+static inline long syscall_get_error(struct task_struct *task,
+ struct pt_regs *regs)
+{
+ /*
+ * If the system call failed,
+ * regs->gpr[3] contains a positive ERRORCODE.
+ */
+ return (regs->ccr & 0x10000000UL) ? -regs->gpr[3] : 0;
+}
+
+static inline long syscall_get_return_value(struct task_struct *task,
+ struct pt_regs *regs)
+{
+ return regs->gpr[3];
+}
+
+static inline void syscall_set_return_value(struct task_struct *task,
+ struct pt_regs *regs,
+ int error, long val)
+{
+ /*
+ * In the general case it's not obvious that we must deal with CCR
+ * here, as the syscall exit path will also do that for us. However
+ * there are some places, eg. the signal code, which check ccr to
+ * decide if the value in r3 is actually an error.
+ */
+ if (error) {
+ regs->ccr |= 0x10000000L;
+ regs->gpr[3] = error;
+ } else {
+ regs->ccr &= ~0x10000000L;
+ regs->gpr[3] = val;
+ }
+}
+
+static inline void syscall_get_arguments(struct task_struct *task,
+ struct pt_regs *regs,
+ unsigned long *args)
+{
+ unsigned long val, mask = -1UL;
+ unsigned int n = 6;
+
+#ifdef CONFIG_COMPAT
+ if (test_tsk_thread_flag(task, TIF_32BIT))
+ mask = 0xffffffff;
+#endif
+ while (n--) {
+ if (n == 0)
+ val = regs->orig_gpr3;
+ else
+ val = regs->gpr[3 + n];
+
+ args[n] = val & mask;
+ }
+}
+
+static inline void syscall_set_arguments(struct task_struct *task,
+ struct pt_regs *regs,
+ const unsigned long *args)
+{
+ memcpy(®s->gpr[3], args, 6 * sizeof(args[0]));
+
+ /* Also copy the first argument into orig_gpr3 */
+ regs->orig_gpr3 = args[0];
+}
+
+static inline int syscall_get_arch(struct task_struct *task)
+{
+ int arch;
+
+ if (IS_ENABLED(CONFIG_PPC64) && !test_tsk_thread_flag(task, TIF_32BIT))
+ arch = AUDIT_ARCH_PPC64;
+ else
+ arch = AUDIT_ARCH_PPC;
+
+#ifdef __LITTLE_ENDIAN__
+ arch |= __AUDIT_ARCH_LE;
+#endif
+ return arch;
+}
+#endif /* _ASM_SYSCALL_H */