From f8b27df985a1c65b329164fe1f57ca348fe862c1 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Fri, 20 Mar 1998 17:20:45 +0000 Subject: New port from Ralf Corsepius . --- c/src/lib/start/sh/Makefile.in | 59 +++++++++++++++++++++++++++ c/src/lib/start/sh/start.s | 92 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 151 insertions(+) create mode 100644 c/src/lib/start/sh/Makefile.in create mode 100644 c/src/lib/start/sh/start.s (limited to 'c/src/lib/start') diff --git a/c/src/lib/start/sh/Makefile.in b/c/src/lib/start/sh/Makefile.in new file mode 100644 index 0000000000..b5d382a468 --- /dev/null +++ b/c/src/lib/start/sh/Makefile.in @@ -0,0 +1,59 @@ +# +# $Id$ +# + +@SET_MAKE@ +srcdir = @srcdir@ +VPATH=@srcdir@ +RTEMS_ROOT = @top_srcdir@ +PROJECT_ROOT = @PROJECT_ROOT@ + +PGMS=${ARCH}/start.o + +# C source names, if any, go here -- minus the .c +C_PIECES= +C_FILES=$(C_PIECES:%=%.c) +C_O_FILES=$(C_PIECES:%=${ARCH}/%.o) + +H_FILES= + +# Assembly source names, if any, go here -- minus the .s +S_PIECES=start +S_FILES=$(S_PIECES:%=%.s) +S_O_FILES=$(S_FILES:%.s=${ARCH}/%.o) + +SRCS=$(C_FILES) $(H_FILES) $(S_FILES) +OBJS=$(C_O_FILES) $(S_O_FILES) + +include $(RTEMS_ROOT)/make/custom/$(RTEMS_BSP).cfg +include $(RTEMS_ROOT)/make/leaf.cfg + +# +# (OPTIONAL) Add local stuff here using += +# + +DEFINES += +CPPFLAGS += +CFLAGS += + +LD_PATHS += +LD_LIBS += +LDFLAGS += + +# force optimization, unless start.o will not work +# CFLAGS_PROFILE= +# CFLAGS_DEBUG=-O3 +# CFLAGS_OPTIMIZE=-O3 + +# +# Add your list of files to delete here. The config files +# already know how to delete some stuff, so you may want +# to just run 'make clean' first to see what gets missed. +# 'make clobber' already includes 'make clean' +# + +CLEAN_ADDITIONS += +CLOBBER_ADDITIONS += + +all: ${ARCH} $(SRCS) $(OBJS) $(PGM) + $(INSTALL_VARIANT) -m 555 ${PGMS} ${PROJECT_RELEASE}/lib diff --git a/c/src/lib/start/sh/start.s b/c/src/lib/start/sh/start.s new file mode 100644 index 0000000000..582ea66a75 --- /dev/null +++ b/c/src/lib/start/sh/start.s @@ -0,0 +1,92 @@ +/* + * Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and + * Bernd Becker (becker@faw.uni-ulm.de) + * + * COPYRIGHT (c) 1997-1998, FAW Ulm, Germany + * + * This program 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. + * + * + * COPYRIGHT (c) 1998. + * On-Line Applications Research Corporation (OAR). + * Copyright assigned to U.S. Government, 1994. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + +#include "asm.h" + + BEGIN_CODE + PUBLIC(start) +SYM (start): + ! install the stack pointer + mov.l stack_k,r15 + + ! zero out bss + mov.l edata_k,r0 + mov.l end_k,r1 + mov #0,r2 +start_l: + mov.l r2,@r0 + add #4,r0 + cmp/ge r0,r1 + bt start_l + + ! copy the vector table from rom to ram + mov.l vects_k,r7 ! vectab + mov #0,r2 ! address of boot vector table + mov #0,r3 | number of bytes copied + mov.w vects_size,r6 ! size of entries in vectab +0: + mov.l @r2+,r1 + mov.l r1,@r7 + add #4,r7 + add #1,r3 + cmp/hi r6,r3 + bf 0b + + mov.l vects_k,r8 ! update vbr to point to vectab + ldc r8,vbr + + ! call the mainline + mov.l main_k,r0 + jsr @r0 + or r0,r0 + + ! call exit + mov r0,r4 + mov.l exit_k,r0 + jsr @r0 + or r0,r0 + + END_CODE + + .align 2 +stack_k: + .long _stack +edata_k: + .long _edata +end_k: + .long _end +main_k: + .long _main +exit_k: + .long _exit + +vects_k: + .long _vectab +vects_size: + .word 255 + +#ifdef __ELF__ + .section .stack,"aw" +#else + .section .stack +#endif +_stack: .long 0xdeaddead -- cgit v1.2.3