| Furquan Shaikh | 2af76f4 | 2014-04-28 16:39:40 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the libpayload project. |
| 3 | * |
| 4 | * Copyright 2014 Google Inc. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * 3. The name of the author may not be used to endorse or promote products |
| 15 | * derived from this software without specific prior written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. |
| 28 | */ |
| 29 | |
| 30 | #include <arch/asm.h> |
| 31 | |
| 32 | .text |
| 33 | |
| 34 | .align 11 |
| 35 | .global exception_table |
| 36 | exception_table: |
| 37 | .align 7 |
| 38 | bl exception_prologue |
| 39 | bl exception_sync_el0 |
| 40 | .align 7 |
| 41 | bl exception_prologue |
| 42 | bl exception_irq_el0 |
| 43 | .align 7 |
| 44 | bl exception_prologue |
| 45 | bl exception_fiq_el0 |
| 46 | .align 7 |
| 47 | bl exception_prologue |
| 48 | bl exception_serror_el0 |
| 49 | .align 7 |
| 50 | bl exception_prologue |
| 51 | bl exception_sync |
| 52 | .align 7 |
| 53 | bl exception_prologue |
| 54 | bl exception_irq |
| 55 | .align 7 |
| 56 | bl exception_prologue |
| 57 | bl exception_fiq |
| 58 | .align 7 |
| 59 | bl exception_prologue |
| 60 | bl exception_serror |
| 61 | |
| 62 | /* |
| 63 | * Save state (register file + ELR) to stack |
| 64 | * and set arguments x0 and x1 for exception call |
| 65 | */ |
| 66 | ENTRY(exception_prologue) |
| 67 | stp x29, x30, [sp, #-16]! |
| 68 | stp x27, x28, [sp, #-16]! |
| 69 | stp x25, x26, [sp, #-16]! |
| 70 | stp x23, x24, [sp, #-16]! |
| 71 | stp x21, x22, [sp, #-16]! |
| 72 | stp x19, x20, [sp, #-16]! |
| 73 | stp x17, x18, [sp, #-16]! |
| 74 | stp x15, x16, [sp, #-16]! |
| 75 | stp x13, x14, [sp, #-16]! |
| 76 | stp x11, x12, [sp, #-16]! |
| 77 | stp x9, x10, [sp, #-16]! |
| 78 | stp x7, x8, [sp, #-16]! |
| 79 | stp x5, x6, [sp, #-16]! |
| 80 | stp x3, x4, [sp, #-16]! |
| 81 | stp x1, x2, [sp, #-16]! |
| 82 | |
| 83 | /* FIXME: Don't assume always running in EL2 */ |
| 84 | mrs x1, elr_el2 |
| 85 | stp x1, x0, [sp, #-16]! |
| 86 | |
| 87 | mrs x1, esr_el2 |
| 88 | mov x0, sp |
| 89 | |
| 90 | ret |
| 91 | ENDPROC(exception_prologue) |
| 92 | |
| 93 | .global exception_stack_end |
| 94 | exception_stack_end: |
| 95 | .quad 0 |
| 96 | |
| 97 | exception_handler: |
| 98 | .word 0 |
| 99 | |
| 100 | .global set_vbar |
| 101 | set_vbar: |
| 102 | msr vbar_el2, x0 |
| 103 | ret |