123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899 |
- /* 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, see
- <http://www.gnu.org/licenses/>. */
- __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)
- 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;
- }
- }
|