Add arm-nacl port.

1 files changed, 53 insertions, 0 deletions

diff --git a/sysdeps/arm/nacl/dl-machine.h b/sysdeps/arm/nacl/dl-machine.h
new file mode 100644
index 0000000000..81f3755b3b
--- /dev/null
+++ b/sysdeps/arm/nacl/dl-machine.h
@@ -0,0 +1,53 @@
+/* Machine-dependent ELF dynamic relocation inline functions.  ARM/NaCl version.
+   Copyright (C) 2015 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#ifndef dl_machine_h
+
+/* This is only needed for handling TEXTRELs and NaCl will never
+   support TEXTRELs at all.  */
+#define CLEAR_CACHE(start, end) __builtin_trap ()
+
+#endif
+
+/* The rest is just machine-specific.
+   This #include is outside the #ifndef because the parts of
+   dl-machine.h used only by dynamic-link.h are outside the guard.  */
+#include <sysdeps/arm/dl-machine.h>
+
+#ifdef dl_machine_h
+
+/* Initial entry point code for the dynamic linker.
+   The C function `_dl_start' is the real entry point;
+   its return value is the user program's entry point.  */
+#undef RTLD_START
+#define RTLD_START asm ("\
+.text\n\
+.globl _start\n\
+.type _start, %function\n\
+.p2align 4\n\
+_start:\n\
+	@ r0 has the pointer to the info block (see nacl_startup.h)\n\
+	mov r1, sp              @ Save stack base for __libc_stack_end.\n\
+	push {r0-r3}            @ Push those, maintaining alignment to 16.\n\
+	mov r0, sp              @ Pointer to {info, sp} is argument.\n\
+	sfi_bl _dl_start\n\
+	pop {r1-r4}             @ Restore stack, getting info block into r1.\n\
+	mov lr, #0              @ Return address for noreturn call.\n\
+	b _dl_start_user");
+
+#endif