1/* 2 * Copyright (c) 2015 Travis Geiselbrecht 3 * 4 * Use of this source code is governed by a MIT-style 5 * license that can be found in the LICENSE file or at 6 * https://opensource.org/licenses/MIT 7 */ 8#include <lk/asm.h> 9 10.section ".vectors", "ax" 11.globl _vectab 12_vectab: 13/* vector table here */ 14 # start vector 15 brai start 16 # user exception 17 brai unhandled_exception 18 # interrupt 19 brai microblaze_irq 20 # break 21 brai unhandled_exception 22 # hardware exception 23 brai unhandled_exception 24 25 # reserved for future 26.fill (0x50 - 0x28) 27 28.section ".text.boot" 29FUNCTION(start) 30 # set the default stack 31 addik r1, r0, default_stack_top 32 33 # set up small data pointers 34 addik r2, r0, _SDATA2_START__ 35 addik r13, r0, _SDATA_START__ 36 37 # set the processor mode to default 38 mts rmsr, r0 39 40 # zero out bss sections 41 addik r5, r0, __bss_start 42 addik r6, r0, 0 43 rsubik r7, r5, __bss_end 44 brlid r15, memset 45 nop 46 47 # arguments to main 48 addik r5, r0, 1 49 addik r6, r0, 2 50 addik r7, r0, 3 51 brlid r15, lk_main 52 addik r8, r0, 4 53 54 # shouldn't be here 55 bri . 56 57FUNCTION(unhandled_exception) 58 bri . 59 60.bss 61.align 3 62LOCAL_DATA(default_stack) 63 .skip 4096 64LOCAL_DATA(default_stack_top) 65