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authorAndreas Jaeger <jaegerandi@gmail.com>2012-03-28 09:22:05 +0200
committerAndreas Jaeger <jaegerandi@gmail.com>2012-03-28 09:22:05 +0200
commit02380086699207fc8e58619f35f60da12470137e (patch)
tree9b337733100552d829ccce5beea1cfb3fe5e5532 /sysdeps/powerpc/powerpc64/start.S
parent09ae94c11b4309b425fbbfaa095e64cac2ae8cb8 (diff)
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Move sysdeps/powerpc/powerpc64/elf files
* sysdeps/powerpc/powerpc64/elf/bzero.S: Moved to ... * sysdeps/powerpc/powerpc64/bzero.S: ... here. * sysdeps/powerpc/powerpc64/elf/entry.h: Moved to ... * sysdeps/powerpc/powerpc64/entry.h: ... here. * sysdeps/powerpc/powerpc64/elf/start.S: Moved to ... * sysdeps/powerpc/powerpc64/start.S: here. * sysdeps/powerpc/powerpc64/elf/Makefile: Merge into ... * sysdeps/powerpc/powerpc64/Makefile: ... this. * sysdeps/powerpc/powerpc64/elf/configure.in: Merge into ... * sysdeps/powerpc/powerpc64/configure.in: ... this. * sysdeps/powerpc/powerpc64/elf/configure: Delete file.
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+/* Startup code for programs linked with GNU libc. PowerPC64 version.
+ Copyright (C) 1998,1999,2000,2001,2002,2003,2009
+ 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/>. */
+
+#include <sysdep.h>
+#include "bp-sym.h"
+
+ /* These are the various addresses we require. */
+#ifdef PIC
+ .section ".data.rel.ro.local","aw"
+#else
+ .section ".rodata"
+#endif
+ .align 3
+L(start_addresses):
+ .quad 0 /* was _SDA_BASE_ but not in 64-bit ABI*/
+/* function descriptors so don't need JUMPTARGET */
+ .quad BP_SYM(main)
+ .quad __libc_csu_init
+ .quad __libc_csu_fini
+
+ ASM_SIZE_DIRECTIVE(L(start_addresses))
+
+ .section ".toc","aw"
+.L01:
+ .tc L(start_addresses)[TC],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. */
+ clrrdi r1,r1,4
+ li r0,0
+ stdu r1,-128(r1)
+ mtlr r0
+ std r0,0(r1)
+
+ /* put the address of start_addresses in r8... **
+** PPC64 ABI uses R13 for thread local, so we leave it alone */
+ ld r8,.L01(r2)
+
+ /* and continue in libc-start, in glibc. */
+ b JUMPTARGET(BP_SYM(__libc_start_main))
+/* The linker needs this nop to recognize that it's OK to call via a
+ TOC adjusting stub. */
+ nop
+
+END(_start)
+
+/* Define a symbol for the first piece of initialized data. */
+ .section ".data"
+ .globl __data_start
+__data_start:
+ .long 0
+weak_alias (__data_start, data_start)