| /* |
| * U-boot - interrupt.S Processing of interrupts and exception handling |
| * |
| * Copyright (c) 2005-2007 Analog Devices Inc. |
| * |
| * (C) Copyright 2000-2004 |
| * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| * |
| * This file is based on interrupt.S |
| * |
| * Copyright (C) 2003 Metrowerks, Inc. <mwaddel@metrowerks.com> |
| * Copyright (C) 2002 Arcturus Networks Ltd. Ted Ma <mated@sympatico.ca> |
| * Copyright (C) 1998 D. Jeff Dionne <jeff@ryeham.ee.ryerson.ca>, |
| * Kenneth Albanowski <kjahds@kjahds.com>, |
| * 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., 51 Franklin St, Fifth Floor, Boston, |
| * MA 02110-1301 USA |
| */ |
| |
| #define ASSEMBLY |
| #include <config.h> |
| #include <asm/blackfin.h> |
| #include <asm/hw_irq.h> |
| #include <asm/entry.h> |
| #include <asm/blackfin_defs.h> |
| |
| .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: |
| SAVE_ALL_SYS |
| r0 = sp; /* stack frame pt_regs pointer argument ==> r0 */ |
| sp += -12; |
| call _trap_c |
| sp += 12; |
| RESTORE_ALL_SYS |
| rtx; |
| |
| .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 _exception_handle; |
| 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 _exception_handle; |
| sp += 12; |
| RESTORE_CONTEXT |
| RTI; |
| |
| evt_soft_int1_exit: |
| rti; |