mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 17:08:10 +00:00
fdecfea093
To follow the existing per-arch conventions, rename "sp_in_global" to "current_stack_pointer". This will let it be used in non-arch places (like HARDENED_USERCOPY). Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
40 lines
1,001 B
C
40 lines
1,001 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Based on arm/arm64/include/asm/current.h
|
|
*
|
|
* Copyright (C) 2016 ARM
|
|
* Copyright (C) 2017 SiFive
|
|
*/
|
|
|
|
|
|
#ifndef _ASM_RISCV_CURRENT_H
|
|
#define _ASM_RISCV_CURRENT_H
|
|
|
|
#include <linux/bug.h>
|
|
#include <linux/compiler.h>
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
struct task_struct;
|
|
|
|
register struct task_struct *riscv_current_is_tp __asm__("tp");
|
|
|
|
/*
|
|
* This only works because "struct thread_info" is at offset 0 from "struct
|
|
* task_struct". This constraint seems to be necessary on other architectures
|
|
* as well, but __switch_to enforces it. We can't check TASK_TI here because
|
|
* <asm/asm-offsets.h> includes this, and I can't get the definition of "struct
|
|
* task_struct" here due to some header ordering problems.
|
|
*/
|
|
static __always_inline struct task_struct *get_current(void)
|
|
{
|
|
return riscv_current_is_tp;
|
|
}
|
|
|
|
#define current get_current()
|
|
|
|
register unsigned long current_stack_pointer __asm__("sp");
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* _ASM_RISCV_CURRENT_H */
|