fc2a8776a2
assym is only to be included by other .s files, and should never actually be assembled by itself. Reviewed by: imp, bdrewery (earlier) Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D14180
118 lines
2.8 KiB
ArmAsm
118 lines
2.8 KiB
ArmAsm
/* $FreeBSD$ */
|
|
|
|
/*-
|
|
* Copyright (C) 2010-2016 Nathan Whitehorn
|
|
* 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 THE AUTHOR ``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 TOOLS GMBH 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.
|
|
*/
|
|
|
|
#include "assym.inc"
|
|
|
|
#include <sys/syscall.h>
|
|
|
|
#include <machine/trap.h>
|
|
#include <machine/param.h>
|
|
#include <machine/spr.h>
|
|
#include <machine/asm.h>
|
|
#include "opt_platform.h"
|
|
|
|
/* Locate the per-CPU data structure */
|
|
#define GET_CPUINFO(r) \
|
|
mfsprg0 r
|
|
|
|
/*
|
|
* Compiled KERNBASE location and the kernel load address
|
|
*/
|
|
.globl kernbase
|
|
.set kernbase, KERNBASE
|
|
|
|
/*
|
|
* Globals
|
|
*/
|
|
.data
|
|
.align 3
|
|
GLOBAL(__startkernel)
|
|
.long begin
|
|
GLOBAL(__endkernel)
|
|
.long end
|
|
.align 4
|
|
#define TMPSTKSZ 8192 /* 8K temporary stack */
|
|
GLOBAL(tmpstk)
|
|
.space TMPSTKSZ
|
|
|
|
.text
|
|
.globl btext
|
|
btext:
|
|
|
|
/*
|
|
* Main kernel entry point.
|
|
*/
|
|
.text
|
|
.globl __start
|
|
__start:
|
|
/* Figure out where we are */
|
|
bl 1f
|
|
.long _DYNAMIC-.
|
|
.long _GLOBAL_OFFSET_TABLE_-.
|
|
.long tmpstk-.
|
|
1: mflr %r30
|
|
|
|
/* Set up temporary stack pointer */
|
|
lwz %r1,8(%r30)
|
|
add %r1,%r1,%r30
|
|
addi %r1,%r1,(8+TMPSTKSZ-40)
|
|
|
|
/* Relocate self */
|
|
stw %r3,16(%r1)
|
|
stw %r4,20(%r1)
|
|
stw %r5,24(%r1)
|
|
stw %r6,28(%r1)
|
|
stw %r7,32(%r1)
|
|
|
|
lwz %r3,0(%r30) /* _DYNAMIC in %r3 */
|
|
add %r3,%r3,%r30
|
|
lwz %r4,4(%r30) /* GOT pointer */
|
|
add %r4,%r4,%r30
|
|
lwz %r4,4(%r4) /* got[0] is _DYNAMIC link addr */
|
|
subf %r4,%r4,%r3 /* subtract to calculate relocbase */
|
|
bl elf_reloc_self
|
|
|
|
lwz %r3,16(%r1)
|
|
lwz %r4,20(%r1)
|
|
lwz %r5,24(%r1)
|
|
lwz %r6,28(%r1)
|
|
lwz %r7,32(%r1)
|
|
|
|
/* MD setup */
|
|
bl powerpc_init
|
|
|
|
/* Set stack pointer to new value and branch to mi_startup */
|
|
mr %r1, %r3
|
|
li %r3, 0
|
|
stw %r3, 0(%r1)
|
|
bl mi_startup
|
|
|
|
/* mi_startup() does not return */
|
|
b .
|
|
|
|
#include <powerpc/aim/trap_subr32.S>
|