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Diffstat (limited to 'arch/csky/abiv1/inc/abi/entry.h')
| -rw-r--r-- | arch/csky/abiv1/inc/abi/entry.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/arch/csky/abiv1/inc/abi/entry.h b/arch/csky/abiv1/inc/abi/entry.h new file mode 100644 index 000000000000..3f3faab3d747 --- /dev/null +++ b/arch/csky/abiv1/inc/abi/entry.h @@ -0,0 +1,160 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. + +#ifndef __ASM_CSKY_ENTRY_H +#define __ASM_CSKY_ENTRY_H + +#include <asm/setup.h> +#include <abi/regdef.h> + +#define LSAVE_PC 8 +#define LSAVE_PSR 12 +#define LSAVE_A0 24 +#define LSAVE_A1 28 +#define LSAVE_A2 32 +#define LSAVE_A3 36 +#define LSAVE_A4 40 +#define LSAVE_A5 44 + +#define EPC_INCREASE 2 +#define EPC_KEEP 0 + +.macro USPTOKSP + mtcr sp, ss1 + mfcr sp, ss0 +.endm + +.macro KSPTOUSP + mtcr sp, ss0 + mfcr sp, ss1 +.endm + +.macro INCTRAP rx + addi \rx, EPC_INCREASE +.endm + +.macro SAVE_ALL epc_inc + mtcr r13, ss2 + mfcr r13, epsr + btsti r13, 31 + bt 1f + USPTOKSP +1: + subi sp, 32 + subi sp, 32 + subi sp, 16 + stw r13, (sp, 12) + + stw lr, (sp, 4) + + mfcr lr, epc + movi r13, \epc_inc + add lr, r13 + stw lr, (sp, 8) + + mfcr lr, ss1 + stw lr, (sp, 16) + + stw a0, (sp, 20) + stw a0, (sp, 24) + stw a1, (sp, 28) + stw a2, (sp, 32) + stw a3, (sp, 36) + + addi sp, 32 + addi sp, 8 + mfcr r13, ss2 + stw r6, (sp) + stw r7, (sp, 4) + stw r8, (sp, 8) + stw r9, (sp, 12) + stw r10, (sp, 16) + stw r11, (sp, 20) + stw r12, (sp, 24) + stw r13, (sp, 28) + stw r14, (sp, 32) + stw r1, (sp, 36) + subi sp, 32 + subi sp, 8 +.endm + +.macro RESTORE_ALL + psrclr ie + ldw lr, (sp, 4) + ldw a0, (sp, 8) + mtcr a0, epc + ldw a0, (sp, 12) + mtcr a0, epsr + btsti a0, 31 + ldw a0, (sp, 16) + mtcr a0, ss1 + + ldw a0, (sp, 24) + ldw a1, (sp, 28) + ldw a2, (sp, 32) + ldw a3, (sp, 36) + + addi sp, 32 + addi sp, 8 + ldw r6, (sp) + ldw r7, (sp, 4) + ldw r8, (sp, 8) + ldw r9, (sp, 12) + ldw r10, (sp, 16) + ldw r11, (sp, 20) + ldw r12, (sp, 24) + ldw r13, (sp, 28) + ldw r14, (sp, 32) + ldw r1, (sp, 36) + addi sp, 32 + addi sp, 8 + + bt 1f + KSPTOUSP +1: + rte +.endm + +.macro SAVE_SWITCH_STACK + subi sp, 32 + stm r8-r15, (sp) +.endm + +.macro RESTORE_SWITCH_STACK + ldm r8-r15, (sp) + addi sp, 32 +.endm + +/* MMU registers operators. */ +.macro RD_MIR rx + cprcr \rx, cpcr0 +.endm + +.macro RD_MEH rx + cprcr \rx, cpcr4 +.endm + +.macro RD_MCIR rx + cprcr \rx, cpcr8 +.endm + +.macro RD_PGDR rx + cprcr \rx, cpcr29 +.endm + +.macro WR_MEH rx + cpwcr \rx, cpcr4 +.endm + +.macro WR_MCIR rx + cpwcr \rx, cpcr8 +.endm + +.macro SETUP_MMU rx + lrw \rx, PHYS_OFFSET | 0xe + cpwcr \rx, cpcr30 + lrw \rx, (PHYS_OFFSET + 0x20000000) | 0xe + cpwcr \rx, cpcr31 +.endm + +#endif /* __ASM_CSKY_ENTRY_H */ |