| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2014 Imagination Technologies |
| * |
| * 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. |
| */ |
| |
| .set noreorder /* Prevent assembler from "optimizing" this code. */ |
| |
| .section ".text._start", "ax", %progbits |
| .globl _start |
| _start: |
| /* Set the stack pointer */ |
| la $sp, _estack |
| |
| /* |
| * Initialise the stack to a known value, used later to check for |
| * overflow. |
| */ |
| la $t0, _stack |
| addi $t1, $sp, -4 |
| li $t2, 0xdeadbeef |
| 1: sw $t2, 0($t0) |
| bne $t0, $t1, 1b |
| addi $t0, $t0, 4 |
| |
| /* Run main */ |
| b main |
| |
| /* |
| * Should never return from main. Make sure there is no branch in the |
| * branch delay slot. |
| */ |
| 2: nop |
| b 2b |
| nop /* Make sure there is no branch after this either. */ |
