diff options
author | David Holsgrove <david.holsgrove@xilinx.com> | 2012-01-10 15:38:42 +1000 |
---|---|---|
committer | David Holsgrove <david.holsgrove@xilinx.com> | 2013-04-18 11:00:13 +1000 |
commit | 7756ba9d6d268b893fd17e56119cea6636be903f (patch) | |
tree | ce6db2419299a4f5394f5fad6bb3bdaab67d2bf6 /ports/sysdeps/microblaze/start.S | |
parent | 5c5b07da032b966260489f0d51de4bac2444fdaf (diff) | |
download | glibc-7756ba9d6d268b893fd17e56119cea6636be903f.zip glibc-7756ba9d6d268b893fd17e56119cea6636be903f.tar.gz glibc-7756ba9d6d268b893fd17e56119cea6636be903f.tar.bz2 |
MicroBlaze Port
Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Diffstat (limited to 'ports/sysdeps/microblaze/start.S')
-rw-r--r-- | ports/sysdeps/microblaze/start.S | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/ports/sysdeps/microblaze/start.S b/ports/sysdeps/microblaze/start.S new file mode 100644 index 0000000..fbbf3bf --- /dev/null +++ b/ports/sysdeps/microblaze/start.S @@ -0,0 +1,84 @@ +/* Copyright (C) 1995-2012 Free Software Foundation, Inc. + + This file is part of the GNU C Library. + + 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. + + In addition to the permissions in the GNU Lesser General Public + License, the Free Software Foundation gives you unlimited + permission to link the compiled version of this file with other + programs, and to distribute those programs without any restriction + coming from the use of this file. (The GNU Lesser General Public + License restrictions do apply in other respects; for example, they + cover modification of the file, and distribution when not linked + into another program.) + + Note that people who make modified versions of this file are not + obligated to grant this special exception for their modified + versions; it is their choice whether to do so. The GNU Lesser + General Public License gives permission to release a modified + version without this exception; this exception also makes it + possible to release a modified version which carries forward this + exception. + + 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/>. */ + + .text + .globl _start + .type _start,@function +_start: + /* On entry the stack contains the following args: + r1+0 - argc + r1+4 - argv[0] + ... + r1+4*(argc-1) - argv[argc-1] + r1+4*argc - NULL + r1+4*argc + 4 - envp[0] + ... + NULL + */ + addk r3,r0,r0 + addk r5,r1,r0 +1: + addik r5,r5,4 + lw r4,r5,r0 + bneid r4,1b + addik r3,r3,1 + addik r6,r3,-1 + sw r6,r1,r0 + addik r7,r1,4 + addik r1,r1,-24 +#ifdef SHARED + /* Setup PIC. */ + mfs r20,rpc + addik r20,r20,_GLOBAL_OFFSET_TABLE_+8 + lwi r5,r20,main@GOT + lwi r8,r20,__libc_csu_init@GOT + lwi r9,r20,__libc_csu_fini@GOT + brid __libc_start_main@PLT + addk r10,r0,r0 +#else + addik r5,r0,main + addik r8,r0,__libc_csu_init + addik r9,r0,__libc_csu_fini + brid __libc_start_main + addk r10,r0,r0 +#endif + +/* Define a symbol for the first piece of initialized data. */ + .data + .globl __data_start +__data_start: + .long 0 + .weak data_start + data_start = __data_start |