/* * U-boot - interrupt.S Processing of interrupts and exception handling * * Copyright (c) 2005 blackfin.uclinux.org * * (C) Copyright 2000-2004 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * This file is based on interrupt.S * * Copyright (C) 2003 Metrowerks, Inc. * Copyright (C) 2002 Arcturus Networks Ltd. Ted Ma * Copyright (C) 1998 D. Jeff Dionne , * Kenneth Albanowski , * The Silver Hammer Group, Ltd. * * (c) 1995, Dionne & Associates * (c) 1995, DKG Display Tech. * * This file is also based on exception.asm * (C) Copyright 2001-2005 - Analog Devices, Inc. All rights reserved. * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #define ASSEMBLY #include #include #include #include .global blackfin_irq_panic; .text .align 2 #ifndef CONFIG_KGDB .global evt_emulation evt_emulation: SAVE_CONTEXT r0 = IRQ_EMU; r1 = seqstat; sp += -12; call blackfin_irq_panic; sp += 12; rte; #endif .global evt_nmi evt_nmi: SAVE_CONTEXT r0 = IRQ_NMI; r1 = RETN; sp += -12; call blackfin_irq_panic; sp += 12; _evt_nmi_exit: rtn; .global trap trap: [--sp] = r0; [--sp] = r1; [--sp] = p0; [--sp] = p1; [--sp] = astat; r0 = seqstat; R0 <<= 26; R0 >>= 26; p0 = r0; p1.l = EVTABLE; p1.h = EVTABLE; p0 = p1 + (p0 << 1); r1 = W[p0] (Z); p1 = r1; jump (pc + p1); .global _EVENT1 _EVENT1: RAISE 14; JUMP.S _EXIT; .global _EVENT2 _EVENT2: RAISE 14; JUMP.S _EXIT; .global _EVENT3 _EVENT3: RAISE 14; JUMP.S _EXIT; .global _EVENT4 _EVENT4: RAISE 14; JUMP.S _EXIT; .global _EVENT5 _EVENT5: RAISE 14; JUMP.S _EXIT; .global _EVENT6 _EVENT6: RAISE 14; JUMP.S _EXIT; .global _EVENT7 _EVENT7: RAISE 15; JUMP.S _EXIT; .global _EVENT8 _EVENT8: RAISE 14; JUMP.S _EXIT; .global _EVENT9 _EVENT9: RAISE 14; JUMP.S _EXIT; .global _EVENT10 _EVENT10: RAISE 14; JUMP.S _EXIT; .global _EVENT11 _EVENT11: RAISE 14; JUMP.S _EXIT; .global _EVENT12 _EVENT12: RAISE 14; JUMP.S _EXIT; .global _EVENT13 _EVENT13: RAISE 14; JUMP.S _EXIT; .global _EVENT14 _EVENT14: /* RAISE 14; */ CALL _cplb_hdr; JUMP.S _EXIT; .global _EVENT19 _EVENT19: RAISE 14; JUMP.S _EXIT; .global _EVENT20 _EVENT20: RAISE 14; JUMP.S _EXIT; .global _EVENT21 _EVENT21: RAISE 14; JUMP.S _EXIT; .global _EXIT _EXIT: ASTAT = [sp++]; p1 = [sp++]; p0 = [sp++]; r1 = [sp++]; r0 = [sp++]; RTX; EVTABLE: .byte2 0x0000; .byte2 0x0000; .byte2 0x0000; .byte2 0x0000; .byte2 0x0000; .byte2 0x0000; .byte2 0x0000; .byte2 0x0000; .byte2 0x0000; .byte2 0x0000; .byte2 0x0000; .byte2 0x0000; .byte2 0x0000; .byte2 0x0000; .byte2 0x0000; .byte2 0x0000; .byte2 0x003E; .byte2 0x0042; .byte4 0x0000; .byte4 0x0000; .byte4 0x0000; .byte4 0x0000; .byte4 0x0000; .byte4 0x0000; .byte4 0x0000; .byte2 0x0000; .byte2 0x001E; .byte2 0x0022; .byte2 0x0032; .byte2 0x002e; .byte2 0x0002; .byte2 0x0036; .byte2 0x002A; .byte2 0x001A; .byte2 0x0016; .byte2 0x000A; .byte2 0x000E; .byte2 0x0012; .byte2 0x0006; .byte2 0x0026; .global evt_rst evt_rst: SAVE_CONTEXT r0 = IRQ_RST; r1 = RETN; sp += -12; call do_reset; sp += 12; _evt_rst_exit: rtn; irq_panic: r0 = IRQ_EVX; r1 = sp; sp += -12; call blackfin_irq_panic; sp += 12; .global evt_ivhw evt_ivhw: SAVE_CONTEXT RAISE 14; _evt_ivhw_exit: rti; .global evt_timer evt_timer: SAVE_CONTEXT r0 = IRQ_CORETMR; sp += -12; /* Polling method used now. */ /* call timer_int; */ sp += 12; RESTORE_CONTEXT rti; nop; .global evt_evt7 evt_evt7: SAVE_CONTEXT r0 = 7; sp += -12; call process_int; sp += 12; evt_evt7_exit: RESTORE_CONTEXT rti; .global evt_evt8 evt_evt8: SAVE_CONTEXT r0 = 8; sp += -12; call process_int; sp += 12; evt_evt8_exit: RESTORE_CONTEXT rti; .global evt_evt9 evt_evt9: SAVE_CONTEXT r0 = 9; sp += -12; call process_int; sp += 12; evt_evt9_exit: RESTORE_CONTEXT rti; .global evt_evt10 evt_evt10: SAVE_CONTEXT r0 = 10; sp += -12; call process_int; sp += 12; evt_evt10_exit: RESTORE_CONTEXT rti; .global evt_evt11 evt_evt11: SAVE_CONTEXT r0 = 11; sp += -12; call process_int; sp += 12; evt_evt11_exit: RESTORE_CONTEXT rti; .global evt_evt12 evt_evt12: SAVE_CONTEXT r0 = 12; sp += -12; call process_int; sp += 12; evt_evt12_exit: RESTORE_CONTEXT rti; .global evt_evt13 evt_evt13: SAVE_CONTEXT r0 = 13; sp += -12; call process_int; sp += 12; evt_evt13_exit: RESTORE_CONTEXT rti; .global evt_system_call evt_system_call: [--sp] = r0; [--SP] = RETI; r0 = [sp++]; r0 += 2; [--sp] = r0; RETI = [SP++]; r0 = [SP++]; SAVE_CONTEXT sp += -12; call display_excp; sp += 12; RESTORE_CONTEXT RTI; evt_system_call_exit: rti; .global evt_soft_int1 evt_soft_int1: [--sp] = r0; [--SP] = RETI; r0 = [sp++]; r0 += 2; [--sp] = r0; RETI = [SP++]; r0 = [SP++]; SAVE_CONTEXT sp += -12; call display_excp; sp += 12; RESTORE_CONTEXT RTI; evt_soft_int1_exit: rti;