From e94adf07ca3021d693003cf282f2914ef5cdac98 Mon Sep 17 00:00:00 2001 From: "bernard.xiong" Date: Wed, 14 Jul 2010 09:51:49 +0000 Subject: add init Jz47xx porting. git-svn-id: https://rt-thread.googlecode.com/svn/trunk@792 bbd45198-f89e-11dd-88c7-29a3b14d5316 --- libcpu/mips/common/stackframe.h | 228 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 228 insertions(+) create mode 100644 libcpu/mips/common/stackframe.h (limited to 'libcpu/mips/common/stackframe.h') diff --git a/libcpu/mips/common/stackframe.h b/libcpu/mips/common/stackframe.h new file mode 100644 index 0000000000..ab4eccb2bc --- /dev/null +++ b/libcpu/mips/common/stackframe.h @@ -0,0 +1,228 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1994, 95, 96, 99, 2001 Ralf Baechle + * Copyright (C) 1994, 1995, 1996 Paul M. Antoine. + * Copyright (C) 1999 Silicon Graphics, Inc. + * Copyright (C) 2007 Maciej W. Rozycki + */ +#ifndef __STACKFRAME_H__ +#define __STACKFRAME_H__ + +#include "asm.h" +#include "mipsregs.h" + +/* + * Stack layout for the INT exception handler + * Derived from the stack layout described in asm-mips/stackframe.h + * + * The first PTRSIZE*6 bytes are argument save space for C subroutines. + */ + +//#define PT_R0 (PTRSIZE*6) /* 0 */ +#define PT_R0 (0) /* 0 */ +#define PT_R1 ((PT_R0) + LONGSIZE) /* 1 */ +#define PT_R2 ((PT_R1) + LONGSIZE) /* 2 */ +#define PT_R3 ((PT_R2) + LONGSIZE) /* 3 */ +#define PT_R4 ((PT_R3) + LONGSIZE) /* 4 */ +#define PT_R5 ((PT_R4) + LONGSIZE) /* 5 */ +#define PT_R6 ((PT_R5) + LONGSIZE) /* 6 */ +#define PT_R7 ((PT_R6) + LONGSIZE) /* 7 */ +#define PT_R8 ((PT_R7) + LONGSIZE) /* 8 */ +#define PT_R9 ((PT_R8) + LONGSIZE) /* 9 */ +#define PT_R10 ((PT_R9) + LONGSIZE) /* 10 */ +#define PT_R11 ((PT_R10) + LONGSIZE) /* 11 */ +#define PT_R12 ((PT_R11) + LONGSIZE) /* 12 */ +#define PT_R13 ((PT_R12) + LONGSIZE) /* 13 */ +#define PT_R14 ((PT_R13) + LONGSIZE) /* 14 */ +#define PT_R15 ((PT_R14) + LONGSIZE) /* 15 */ +#define PT_R16 ((PT_R15) + LONGSIZE) /* 16 */ +#define PT_R17 ((PT_R16) + LONGSIZE) /* 17 */ +#define PT_R18 ((PT_R17) + LONGSIZE) /* 18 */ +#define PT_R19 ((PT_R18) + LONGSIZE) /* 19 */ +#define PT_R20 ((PT_R19) + LONGSIZE) /* 20 */ +#define PT_R21 ((PT_R20) + LONGSIZE) /* 21 */ +#define PT_R22 ((PT_R21) + LONGSIZE) /* 22 */ +#define PT_R23 ((PT_R22) + LONGSIZE) /* 23 */ +#define PT_R24 ((PT_R23) + LONGSIZE) /* 24 */ +#define PT_R25 ((PT_R24) + LONGSIZE) /* 25 */ +#define PT_R26 ((PT_R25) + LONGSIZE) /* 26 */ +#define PT_R27 ((PT_R26) + LONGSIZE) /* 27 */ +#define PT_R28 ((PT_R27) + LONGSIZE) /* 28 */ +#define PT_R29 ((PT_R28) + LONGSIZE) /* 29 */ +#define PT_R30 ((PT_R29) + LONGSIZE) /* 30 */ +#define PT_R31 ((PT_R30) + LONGSIZE) /* 31 */ + +/* + * Saved special registers + */ +#define PT_STATUS ((PT_R31) + LONGSIZE) /* 32 */ +#define PT_HI ((PT_STATUS) + LONGSIZE) /* 33 */ +#define PT_LO ((PT_HI) + LONGSIZE) /* 34 */ +#define PT_BADVADDR ((PT_LO) + LONGSIZE) /* 35 */ +#define PT_CAUSE ((PT_BADVADDR) + LONGSIZE) /* 36 */ +#define PT_EPC ((PT_CAUSE) + LONGSIZE) /* 37 */ + +#define PT_SIZE ((((PT_EPC) + LONGSIZE) + (PTRSIZE-1)) & ~(PTRSIZE-1)) + + + .macro SAVE_AT + .set push + .set noat + LONG_S $1, PT_R1(sp) + .set pop + .endm + + .macro SAVE_TEMP + mfhi v1 + LONG_S $8, PT_R8(sp) + LONG_S $9, PT_R9(sp) + LONG_S v1, PT_HI(sp) + mflo v1 + LONG_S $10, PT_R10(sp) + LONG_S $11, PT_R11(sp) + LONG_S v1, PT_LO(sp) + LONG_S $12, PT_R12(sp) + LONG_S $13, PT_R13(sp) + LONG_S $14, PT_R14(sp) + LONG_S $15, PT_R15(sp) + LONG_S $24, PT_R24(sp) + .endm + + .macro SAVE_STATIC + LONG_S $16, PT_R16(sp) + LONG_S $17, PT_R17(sp) + LONG_S $18, PT_R18(sp) + LONG_S $19, PT_R19(sp) + LONG_S $20, PT_R20(sp) + LONG_S $21, PT_R21(sp) + LONG_S $22, PT_R22(sp) + LONG_S $23, PT_R23(sp) + LONG_S $30, PT_R30(sp) + .endm + + .macro get_saved_sp + nop + .endm + + .macro SAVE_SOME + .set push + .set noat + .set reorder + move k1, sp +8: move k0, sp + PTR_SUBU sp, k1, PT_SIZE + LONG_S k0, PT_R29(sp) + LONG_S $3, PT_R3(sp) + LONG_S $0, PT_R0(sp) + mfc0 v1, CP0_STATUS + LONG_S $2, PT_R2(sp) + LONG_S v1, PT_STATUS(sp) + LONG_S $4, PT_R4(sp) + mfc0 v1, CP0_CAUSE + LONG_S $5, PT_R5(sp) + LONG_S v1, PT_CAUSE(sp) + LONG_S $6, PT_R6(sp) + MFC0 v1, CP0_EPC + LONG_S $7, PT_R7(sp) + LONG_S v1, PT_EPC(sp) + LONG_S $25, PT_R25(sp) + LONG_S $28, PT_R28(sp) + LONG_S $31, PT_R31(sp) + .set pop + .endm + + .macro SAVE_ALL + SAVE_SOME + SAVE_AT + SAVE_TEMP + SAVE_STATIC + .endm + + .macro RESTORE_AT + .set push + .set noat + LONG_L $1, PT_R1(sp) + .set pop + .endm + + .macro RESTORE_TEMP + LONG_L $24, PT_LO(sp) + LONG_L $8, PT_R8(sp) + LONG_L $9, PT_R9(sp) + mtlo $24 + LONG_L $24, PT_HI(sp) + LONG_L $10, PT_R10(sp) + LONG_L $11, PT_R11(sp) + mthi $24 + LONG_L $12, PT_R12(sp) + LONG_L $13, PT_R13(sp) + LONG_L $14, PT_R14(sp) + LONG_L $15, PT_R15(sp) + LONG_L $24, PT_R24(sp) + .endm + + .macro RESTORE_STATIC + LONG_L $16, PT_R16(sp) + LONG_L $17, PT_R17(sp) + LONG_L $18, PT_R18(sp) + LONG_L $19, PT_R19(sp) + LONG_L $20, PT_R20(sp) + LONG_L $21, PT_R21(sp) + LONG_L $22, PT_R22(sp) + LONG_L $23, PT_R23(sp) + LONG_L $30, PT_R30(sp) + .endm + + .macro RESTORE_SOME + .set push + .set reorder + .set noat + LONG_L v0, PT_STATUS(sp) + mtc0 v0, CP0_STATUS + LONG_L v1, PT_EPC(sp) + MTC0 v1, CP0_EPC + LONG_L $31, PT_R31(sp) + LONG_L $28, PT_R28(sp) + LONG_L $25, PT_R25(sp) + LONG_L $7, PT_R7(sp) + LONG_L $6, PT_R6(sp) + LONG_L $5, PT_R5(sp) + LONG_L $4, PT_R4(sp) + LONG_L $3, PT_R3(sp) + LONG_L $2, PT_R2(sp) + .set pop + .endm + + .macro RESTORE_SP_AND_RET + LONG_L sp, PT_R29(sp) + .set mips3 + eret + .set mips0 + .endm + + + .macro RESTORE_SP + LONG_L sp, PT_R29(sp) + .endm + + .macro RESTORE_ALL + RESTORE_TEMP + RESTORE_STATIC + RESTORE_AT + RESTORE_SOME + RESTORE_SP + .endm + + .macro RESTORE_ALL_AND_RET + RESTORE_TEMP + RESTORE_STATIC + RESTORE_AT + RESTORE_SOME + RESTORE_SP_AND_RET + .endm + +#endif /* end of __STACKFRAME_H__ */ + -- cgit v1.3.1