| /* |
| * Copyright (c) 2015 Travis Geiselbrecht |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files |
| * (the "Software"), to deal in the Software without restriction, |
| * including without limitation the rights to use, copy, modify, merge, |
| * publish, distribute, sublicense, and/or sell copies of the Software, |
| * and to permit persons to whom the Software is furnished to do so, |
| * subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| #include <asm.h> |
| |
| .section ".text.boot" |
| FUNCTION(_start) |
| # set the default stack |
| la $sp, default_stack_top |
| |
| # zero out the bss section |
| la $t0, __bss_start |
| la $t1, __bss_end |
| 0: |
| sw $zero, ($t0) |
| addi $t0, 4 |
| bne $t0, $t1, 0b |
| |
| # args to main and call it |
| li $a0, 1 |
| li $a1, 2 |
| li $a2, 3 |
| li $a3, 4 |
| jal lk_main |
| |
| # should never return here |
| b . |
| |
| .bss |
| .align 3 |
| LOCAL_DATA(default_stack) |
| .skip 4096 |
| LOCAL_DATA(default_stack_top) |
| |