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/* Startup code for the OpenRISC 1000 platform,
based on microblaze implementation */
/*
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
__asm__ ("\
.text\n\
.globl _start\n\
.type _start,@function\n\
.hidden _start\n\
_start:\n\
l.ori r3, r9, 0\n\
l.ori r3, r1, 0\n\
l.movhi r11, 0\n\
1:\n\
l.addi r3, r3, 4\n\
l.lwz r12, 0(r3)\n\
l.sfnei r12, 0\n\
l.addi r11, r11, 1\n\
l.bf 1b\n\
l.nop\n\
l.ori r3, r11, 0\n\
l.ori r3, r1, 0\n\
l.addi r11, r11, -1\n\
/* store argument counter to stack */\n\
l.sw 0(r3), r11\n\
l.addi r1, r1, -24\n\
l.sw 0(r1), r9\n\
\n\
l.jal .LPC0\n\
#ifndef __OR1K_NODELAY__\n\
l.nop\n\
#endif\n\
/* Load the PIC register */\n\
.LPC0:\n\
l.movhi r16, gotpchi(_GLOBAL_OFFSET_TABLE_+(.-.LPC0))\n\
l.ori r16, r16, gotpclo(_GLOBAL_OFFSET_TABLE_+(.-.LPC0))\n\
l.add r16, r16, r9\n\
\n\
l.jal _dl_start\n\
l.nop\n\
/* FALLTHRU */\n\
\n\
.globl _dl_start_user\n\
.type _dl_start_user,@function\n\
_dl_start_user:\n\
l.movhi r12, gotoffhi(_dl_skip_args)\n\
l.ori r12, r12, gotofflo(_dl_skip_args)\n\
l.add r12, r12, r16\n\
l.lwz r12, 0(r12)\n\
l.lwz r3, 24(r1)\n\
\n\
l.movhi r9, gotoffhi(_dl_fini)\n\
l.ori r9, r9, gotofflo(_dl_fini)\n\
l.add r9, r9, r16\n\
\n\
l.addi r9, r9, -8\n\
l.addi r1, r1, 24\n\
l.jr r11\n\
l.nop\n\
.size _dl_start_user, . - _dl_start_user\n\
.previous\n\
");
/*
* Get a pointer to the argv array. On many platforms this can be just
* the address of the first argument, on other platforms we need to
* do something a little more subtle here.
*/
#define GET_ARGV(ARGVP, ARGS) ARGVP = (((unsigned long*) ARGS)+1)
/* The ld.so library requires relocations */
#define ARCH_NEEDS_BOOTSTRAP_RELOCS
static __always_inline
void PERFORM_BOOTSTRAP_RELOC(ELF_RELOC *rpnt, unsigned long *reloc_addr,
unsigned long symbol_addr, unsigned long load_addr,
attribute_unused Elf32_Sym *symtab)
{
switch (ELF_R_TYPE(rpnt->r_info))
{
case R_OR1K_RELATIVE:
*reloc_addr = load_addr + rpnt->r_addend;
break;
default:
_dl_exit(1);
break;
}
}
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