From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/riscv/include/asm/syscall.h | 78 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 arch/riscv/include/asm/syscall.h (limited to 'arch/riscv/include/asm/syscall.h') diff --git a/arch/riscv/include/asm/syscall.h b/arch/riscv/include/asm/syscall.h new file mode 100644 index 000000000..384a63b86 --- /dev/null +++ b/arch/riscv/include/asm/syscall.h @@ -0,0 +1,78 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2008-2009 Red Hat, Inc. All rights reserved. + * Copyright 2010 Tilera Corporation. All Rights Reserved. + * Copyright 2015 Regents of the University of California, Berkeley + * + * See asm-generic/syscall.h for descriptions of what we must do here. + */ + +#ifndef _ASM_RISCV_SYSCALL_H +#define _ASM_RISCV_SYSCALL_H + +#include +#include +#include + +/* The array of function pointers for syscalls. */ +extern void * const sys_call_table[]; +extern void * const compat_sys_call_table[]; + +/* + * Only the low 32 bits of orig_r0 are meaningful, so we return int. + * This importantly ignores the high bits on 64-bit, so comparisons + * sign-extend the low 32 bits. + */ +static inline int syscall_get_nr(struct task_struct *task, + struct pt_regs *regs) +{ + return regs->a7; +} + +static inline void syscall_rollback(struct task_struct *task, + struct pt_regs *regs) +{ + regs->a0 = regs->orig_a0; +} + +static inline long syscall_get_error(struct task_struct *task, + struct pt_regs *regs) +{ + unsigned long error = regs->a0; + + return IS_ERR_VALUE(error) ? error : 0; +} + +static inline long syscall_get_return_value(struct task_struct *task, + struct pt_regs *regs) +{ + return regs->a0; +} + +static inline void syscall_set_return_value(struct task_struct *task, + struct pt_regs *regs, + int error, long val) +{ + regs->a0 = (long) error ?: val; +} + +static inline void syscall_get_arguments(struct task_struct *task, + struct pt_regs *regs, + unsigned long *args) +{ + args[0] = regs->orig_a0; + args++; + memcpy(args, ®s->a1, 5 * sizeof(args[0])); +} + +static inline int syscall_get_arch(struct task_struct *task) +{ +#ifdef CONFIG_64BIT + return AUDIT_ARCH_RISCV64; +#else + return AUDIT_ARCH_RISCV32; +#endif +} + +asmlinkage long sys_riscv_flush_icache(uintptr_t, uintptr_t, uintptr_t); +#endif /* _ASM_RISCV_SYSCALL_H */ -- cgit v1.2.3