| /* |
| * Copyright 2018, Data61 |
| * Commonwealth Scientific and Industrial Research Organisation (CSIRO) |
| * ABN 41 687 119 230. |
| * |
| * This software may be distributed and modified according to the terms of |
| * the BSD 2-Clause license. Note that NO WARRANTY is provided. |
| * See "LICENSE_BSD2.txt" for details. |
| * |
| * @TAG(DATA61_BSD) |
| */ |
| /* |
| * A default crt0 for ARM. It does the bare minimum required to get into |
| * main() with a sensible C environment. |
| * |
| * This file will only be linked in if: |
| * - no other file already provides a _start symbol, and |
| * - _start is an undefined external symbol (force this by passing |
| * "-u _start" to ld). |
| */ |
| |
| #include <autoconf.h> |
| |
| #ifdef CONFIG_LIB_SEL4_PLAT_SUPPORT_START |
| .extern __stdout_used |
| .text |
| |
| /* |
| * Image Entry point. |
| */ |
| .global _start |
| _start: |
| /* Dirty hack to load gp and avoid load/store exceptions, this should be |
| * defined by the linker */ |
| #error "you know" |
| li gp, 0x800 |
| la s0, __stdout_used |
| add gp, gp, s0 |
| /* Setup a stack for ourselves. */ |
| la sp, _stack_top |
| |
| /* Setup bootinfo. The pointer to the bootinfo struct starts in 'a0'. */ |
| #add a0, x0, a5 |
| jal seL4_InitBootInfo |
| |
| la a1, sel4_vsyscall |
| /* Call constructors and other initialisation functions. */ |
| jal _init |
| |
| /* Call main. */ |
| jal main |
| j exit |
| |
| /* .text Literal Pool */ |
| |
| /* Stack for the image. */ |
| .bss |
| .align 8 |
| _stack_bottom: |
| .space 16384 |
| _stack_top: |
| |
| #endif /* CONFIG_LIB_SEL4_PLAT_SUPPORT_START */ |
