| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright 2014 Google Inc. |
| * |
| * 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; version 2 of the License. |
| * |
| * 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 |
| */ |
| |
| /* Macro to initialize stack, perform seeding if required and finally call the |
| * function provided |
| * @stack : Stack address |
| * @size : Stack size |
| * @seed : Stack seeding required (1=yes/otherwise=no) |
| * @func : Function to call after initializing stack |
| */ |
| .macro stack_init stack, size, seed, func |
| /* Check if stack seeding is required */ |
| mov r0, #\seed |
| cmp r0, #1 |
| bne call_func |
| /* Stack seeding */ |
| ldr r0, \stack |
| ldr r1, \size |
| sub r0, r0, r1 |
| ldr r1, \stack |
| ldr r2, =0xdeadbeef |
| init_stack_loop: |
| str r2, [r0] |
| add r0, #4 |
| cmp r0, r1 |
| bne init_stack_loop |
| |
| call_func: |
| ldr sp, \stack /* Set up stack pointer */ |
| bl \func |
| .endm |
