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/* Startup code for the microblaze platform, based on glibc 2.3.6, dl-machine.h */
/*
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\
addk r5,r0,r1\n\
addk r3,r0,r0\n\
1:\n\
addik r5,r5,4\n\
lw r4,r5,r0\n\
bneid r4,1b\n\
addik r3,r3,1\n\
addik r3,r3,-1\n\
addk r5,r0,r1\n\
sw r3,r5,r0\n\
addik r1,r1,-24\n\
sw r15,r1,r0\n\
brlid r15,_dl_start\n\
nop\n\
/* FALLTHRU */\n\
\n\
.globl _dl_start_user\n\
.type _dl_start_user,@function\n\
_dl_start_user:\n\
mfs r20,rpc\n\
addik r20,r20,_GLOBAL_OFFSET_TABLE_+8\n\
lwi r4,r20,_dl_skip_args@GOTOFF\n\
lwi r5,r1,24\n\
rsubk r5,r4,r5\n\
addk r4,r4,r4\n\
addk r4,r4,r4\n\
addk r1,r1,r4\n\
swi r5,r1,24\n\
swi r3,r1,20\n\
addk r6,r5,r0\n\
addk r5,r5,r5\n\
addk r5,r5,r5\n\
addik r7,r1,28\n\
addk r8,r7,r5\n\
addik r8,r8,4\n\
lwi r5,r1,24\n\
lwi r3,r1,20\n\
addk r4,r5,r5\n\
addk r4,r4,r4\n\
addik r6,r1,28\n\
addk r7,r6,r4\n\
addik r7,r7,4\n\
addik r15,r20,_dl_fini@GOTOFF\n\
addik r15,r15,-8\n\
brad r3\n\
addik r1,r1,24\n\
nop\n\
.size _dl_start_user, . - _dl_start_user\n\
.previous");
/*
* 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_MICROBLAZE_REL:
*reloc_addr = load_addr + rpnt->r_addend;
break;
default:
_dl_exit(1);
break;
}
}
|
