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-rw-r--r--arch/csky/abiv2/inc/abi/entry.h28
-rw-r--r--arch/csky/abiv2/inc/abi/switch_context.h32
2 files changed, 57 insertions, 3 deletions
diff --git a/arch/csky/abiv2/inc/abi/entry.h b/arch/csky/abiv2/inc/abi/entry.h
index acd05214d4e3..edc5cc04c4de 100644
--- a/arch/csky/abiv2/inc/abi/entry.h
+++ b/arch/csky/abiv2/inc/abi/entry.h
@@ -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)
diff --git a/arch/csky/abiv2/inc/abi/switch_context.h b/arch/csky/abiv2/inc/abi/switch_context.h
new file mode 100644
index 000000000000..73a81245a3b3
--- /dev/null
+++ b/arch/csky/abiv2/inc/abi/switch_context.h
@@ -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 */