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csky: fixup save hi,lo,dspcr regs in switch_stack.

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HI, LO, DSPCR registers are 807/810 related regs and no need for 610/860.
All of the regs must be saved in pt_regs and switch_stack. This patch
fixup saving dspcr reg in switch_stack and pt_regs.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
This commit is contained in:
Guo Ren
2018-12-31 15:17:48 +08:00
parent 31295a72b5
commit 789154c2ad
8 changed files with 79 additions and 68 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
arch/csky/abiv2/inc/abi/entry.h
View File

@@ -57,6 +57,8 @@
stw lr, (sp, 60)
mflo lr
stw lr, (sp, 64)
mfcr lr, cr14
stw lr, (sp, 68)
#endif
subi sp, 80
.endm
@@ -77,6 +79,8 @@
mthi a0
ldw a0, (sp, 144)
mtlo a0
ldw a0, (sp, 148)
mtcr a0, cr14
#endif
ldw a0, (sp, 24)
@@ -93,9 +97,9 @@
.endm
.macro SAVE_SWITCH_STACK
subi sp, 64
subi sp, 64
stm r4-r11, (sp)
stw r15, (sp, 32)
stw lr, (sp, 32)
stw r16, (sp, 36)
stw r17, (sp, 40)
stw r26, (sp, 44)
@@ -103,11 +107,29 @@
stw r28, (sp, 52)
stw r29, (sp, 56)
stw r30, (sp, 60)
#ifdef CONFIG_CPU_HAS_HILO
subi sp, 16
mfhi lr
stw lr, (sp, 0)
mflo lr
stw lr, (sp, 4)
mfcr lr, cr14
stw lr, (sp, 8)
#endif
.endm
.macro RESTORE_SWITCH_STACK
#ifdef CONFIG_CPU_HAS_HILO
ldw lr, (sp, 0)
mthi lr
ldw lr, (sp, 4)
mtlo lr
ldw lr, (sp, 8)
mtcr lr, cr14
addi sp, 16
#endif
ldm r4-r11, (sp)
ldw r15, (sp, 32)
ldw lr, (sp, 32)
ldw r16, (sp, 36)
ldw r17, (sp, 40)
ldw r26, (sp, 44)

32
arch/csky/abiv2/inc/abi/switch_context.h Normal file
View File

@@ -0,0 +1,32 @@
/* SPDX-License-Identifier: GPL-2.0 */
// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#ifndef __ABI_CSKY_PTRACE_H
#define __ABI_CSKY_PTRACE_H
struct switch_stack {
#ifdef CONFIG_CPU_HAS_HILO
unsigned long rhi;
unsigned long rlo;
unsigned long cr14;
unsigned long pad;
#endif
unsigned long r4;
unsigned long r5;
unsigned long r6;
unsigned long r7;
unsigned long r8;
unsigned long r9;
unsigned long r10;
unsigned long r11;
unsigned long r15;
unsigned long r16;
unsigned long r17;
unsigned long r26;
unsigned long r27;
unsigned long r28;
unsigned long r29;
unsigned long r30;
};
#endif /* __ABI_CSKY_PTRACE_H */