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mips
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nlm
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dev
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ucore
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crt0_basic.S
(1.89 KB)
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ld.ucore.S
(3.21 KB)
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ucore.h
(11.18 KB)
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ucore_app.c
(1.74 KB)
Editing: crt0_basic.S
/*- * Copyright (c) 2003-2012 Broadcom Corporation * All Rights Reserved * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD$ */ #include <machine/asm.h> .text .align 2 .globl _start .ent _start _start: .set noreorder la gp, _gp .end _start .globl __stack .ent zerobss zerobss: la v0, _fbss la v1, _end 3: sw zero, 0(v0) bltu v0,v1,3b addiu v0,v0,4 # executed in delay slot la sp, __stack # set stack pointer .end zerobss .ent init init: addiu a1,sp,32 # argv = sp + 32 addiu a2,sp,40 # envp = sp + 40 sw zero,(a1) # argv[argc] = 0 sw zero,(a2) # envp[0] = 0 jal main # call the program start function move a0,zero # set argc to 0 1: b 1b nop .end init
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