diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc32/elf/start.S')
| -rw-r--r-- | sysdeps/powerpc/powerpc32/elf/start.S | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc32/elf/start.S b/sysdeps/powerpc/powerpc32/elf/start.S new file mode 100644 index 0000000000..063df75328 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/elf/start.S @@ -0,0 +1,57 @@ +/* Startup code for programs linked with GNU libc. + Copyright (C) 1998, 1999, 2000, 2001 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. + + 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. */ + +#include <sysdep.h> +#include "bp-sym.h" + + /* These are the various addresses we require. */ + .section ".rodata" + .align 2 + weak_extern(_init) + weak_extern(_fini) +L(start_addresses): + .long _SDA_BASE_ + .long JUMPTARGET(BP_SYM (main)) + .long JUMPTARGET(_init) + .long JUMPTARGET(_fini) + ASM_SIZE_DIRECTIVE(L(start_addresses)) + + .section ".text" +ENTRY(_start) + /* Save the stack pointer, in case we're statically linked under Linux. */ + mr r9,r1 + /* Set up an initial stack frame, and clear the LR. */ + clrrwi r1,r1,4 + li r0,0 + stwu r1,-16(r1) + mtlr r0 + stw r0,0(r1) + /* Set r13 to point at the 'small data area', and put the address of + start_addresses in r8... */ + lis r8,L(start_addresses)@ha + lwzu r13,L(start_addresses)@l(r8) + /* and continue in libc-start, in glibc. */ + b JUMPTARGET(BP_SYM (__libc_start_main)) +END(_start) + +/* Define a symbol for the first piece of initialized data. */ + .section ".data" + .globl __data_start +__data_start: +weak_alias (__data_start, data_start) |