summaryrefslogtreecommitdiff
path: root/arch/csky/include/asm/processor.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/csky/include/asm/processor.h')
-rw-r--r--arch/csky/include/asm/processor.h31
1 files changed, 8 insertions, 23 deletions
diff --git a/arch/csky/include/asm/processor.h b/arch/csky/include/asm/processor.h
index 21e0bd5293dd..e487a46d1c37 100644
--- a/arch/csky/include/asm/processor.h
+++ b/arch/csky/include/asm/processor.h
@@ -1,14 +1,12 @@
/* SPDX-License-Identifier: GPL-2.0 */
-// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#ifndef __ASM_CSKY_PROCESSOR_H
#define __ASM_CSKY_PROCESSOR_H
#include <linux/bitops.h>
-#include <asm/segment.h>
+#include <linux/cache.h>
#include <asm/ptrace.h>
#include <asm/current.h>
-#include <asm/cache.h>
#include <abi/reg_ops.h>
#include <abi/regdef.h>
#include <abi/switch_context.h>
@@ -28,7 +26,7 @@ extern struct cpuinfo_csky cpu_data[];
* for a 64 bit kernel expandable to 8192EB, of which the current CSKY
* implementations will "only" be able to use 1TB ...
*/
-#define TASK_SIZE 0x7fff8000UL
+#define TASK_SIZE (PAGE_OFFSET - (PAGE_SIZE * 8))
#ifdef __KERNEL__
#define STACK_TOP TASK_SIZE
@@ -41,16 +39,15 @@ extern struct cpuinfo_csky cpu_data[];
#define TASK_UNMAPPED_BASE (TASK_SIZE / 3)
struct thread_struct {
- unsigned long ksp; /* kernel stack pointer */
- unsigned long sr; /* saved status register */
+ unsigned long sp; /* kernel stack pointer */
+ unsigned long trap_no; /* saved status register */
/* FPU regs */
struct user_fp __aligned(16) user_fp;
};
#define INIT_THREAD { \
- .ksp = sizeof(init_stack) + (unsigned long) &init_stack, \
- .sr = DEFAULT_PSR_VALUE, \
+ .sp = sizeof(init_stack) + (unsigned long) &init_stack, \
}
/*
@@ -61,7 +58,6 @@ struct thread_struct {
*/
#define start_thread(_regs, _pc, _usp) \
do { \
- set_fs(USER_DS); /* reads from user space */ \
(_regs)->pc = (_pc); \
(_regs)->regs[1] = 0; /* ABIV1 is R7, uClibc_main rtdl arg */ \
(_regs)->regs[2] = 0; \
@@ -73,23 +69,10 @@ do { \
/* Forward declaration, a strange C thing */
struct task_struct;
-/* Free all resources held by a thread. */
-static inline void release_thread(struct task_struct *dead_task)
-{
-}
-
/* Prepare to copy thread state - unlazy all lazy status */
#define prepare_to_copy(tsk) do { } while (0)
-extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
-
-#define copy_segments(tsk, mm) do { } while (0)
-#define release_segments(mm) do { } while (0)
-#define forget_segments() do { } while (0)
-
-extern unsigned long thread_saved_pc(struct task_struct *tsk);
-
-unsigned long get_wchan(struct task_struct *p);
+unsigned long __get_wchan(struct task_struct *p);
#define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc)
#define KSTK_ESP(tsk) (task_pt_regs(tsk)->usp)
@@ -99,4 +82,6 @@ unsigned long get_wchan(struct task_struct *p);
#define cpu_relax() barrier()
+register unsigned long current_stack_pointer __asm__("sp");
+
#endif /* __ASM_CSKY_PROCESSOR_H */