From 40d7cd0fd78fe2004e2a53c4618c148339b02733 Mon Sep 17 00:00:00 2001 From: Jing Yu Date: Mon, 19 Dec 2011 16:56:54 -0800 Subject: Add gcc-4.6. Synced to @180989 Change-Id: Ie3676586e1d8e3c8cd9f07d022f450d05fa08439 svn://gcc.gnu.org/svn/gcc/branches/google/gcc-4_6-mobile --- gcc-4.6/gcc/config/m68hc11/m68hc11-crt0.S | 86 +++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 gcc-4.6/gcc/config/m68hc11/m68hc11-crt0.S (limited to 'gcc-4.6/gcc/config/m68hc11/m68hc11-crt0.S') diff --git a/gcc-4.6/gcc/config/m68hc11/m68hc11-crt0.S b/gcc-4.6/gcc/config/m68hc11/m68hc11-crt0.S new file mode 100644 index 000000000..429ab0f27 --- /dev/null +++ b/gcc-4.6/gcc/config/m68hc11/m68hc11-crt0.S @@ -0,0 +1,86 @@ +/* Startup code for M68HC11. + Copyright (C) 1999, 2000, 2002, 2008, 2009 Free Software Foundation, Inc. + +This file is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by the +Free Software Foundation; either version 3, or (at your option) any +later version. + +This file 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 +General Public License for more details. + +Under Section 7 of GPL version 3, you are granted additional +permissions described in the GCC Runtime Library Exception, version +3.1, as published by the Free Software Foundation. + +You should have received a copy of the GNU General Public License and +a copy of the GCC Runtime Library Exception along with this program; +see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +. */ + +;----------------------------------------- +; startup code +;----------------------------------------- + +#ifdef __HAVE_SHORT_INT__ + .mode mshort +#else + .mode mlong +#endif + +#if defined(__USE_RTC__) && defined(mc68hc12) + .macro jsr name + call \name + .endm +#endif +;; +;; +;; The linker concatenate the .install* sections in the following order: +;; +;; .install0 Setup the stack pointer +;; .install1 Place holder for applications +;; .install2 Optional installation of data section in memory +;; .install3 Place holder for applications +;; .install4 Invokes the main +;; + .sect .install0,"ax",@progbits + .globl _start + +_start: +;; +;; At this step, the stack is not initialized and interrupts are masked. +;; Applications only have 64 cycles to initialize some registers. +;; +;; To have a generic/configurable startup, initialize the stack to +;; the end of some memory region. The _stack symbol is defined by +;; the linker. +;; + lds #_stack + + .sect .install2,"ax",@progbits +;; +;; Call a specific initialization operation. The default is empty. +;; It can be overridden by applications. It is intended to initialize +;; the 68hc11 registers. Function prototype is: +;; +;; int __premain(void); +;; + jsr __premain + +;; +;; +;; + .sect .install4,"ax",@progbits + jsr main +fatal: + jsr exit + bra fatal + +;----------------------------------------- +; end startup code +;----------------------------------------- +;; Force loading of data section mapping and bss clear + .2byte __map_data_section + .2byte __init_bss_section -- cgit v1.2.3