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[newlib]

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* configure.host (msp430): Add.
* libc/include/machine/ieeefp.h: Add MSP430 support.
* libc/include/machine/setjmp.h: Likewise.
* libc/include/sys/config.h: Likewise.
* libc/machine/configure.in (msp430): Add.
* libc/machine/configure: Regenerate.
* libc/machine/msp430: New directory.

[libgloss]
* configure.in (msp430*-*-elf): Add.
* configure: Regenerate.
* msp430: New directory.
This commit is contained in:
DJ Delorie
2013-05-13 21:39:51 +00:00
parent e4ab61a8ab
commit 2f2a304234
35 changed files with 11830 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

153
libgloss/msp430/Makefile.in Normal file
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# Copyright (c) 2008, 2009, 2011, 2013 Red Hat, Inc. All rights reserved.
#
# This copyrighted material is made available to anyone wishing to use, modify,
# copy, or redistribute it subject to the terms and conditions of the BSD
# License. This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
# is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
# are incorporated in the source code or documentation are not subject to the BSD
# License and may only be used or replicated with the express permission of
# Red Hat, Inc.
# Makefile for libgloss/msp430.
VPATH = @srcdir@
srcdir = @srcdir@
objdir = .
srcroot = $(srcdir)/../..
objroot = $(objdir)/../..
prefix = @prefix@
exec_prefix = @exec_prefix@
host_alias = @host_alias@
target_alias = @target_alias@
bindir = @bindir@
libdir = @libdir@
tooldir = $(exec_prefix)/$(target_alias)
# Multilib support variables.
# TOP is used instead of MULTI{BUILD,SRC}TOP.
MULTIDIRS =
MULTISUBDIR =
MULTIDO = true
MULTICLEAN = true
INSTALL = @INSTALL@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
INSTALL_DATA = @INSTALL_DATA@
SHELL = /bin/sh
CC = @CC@
AS = @AS@
AR = @AR@
LD = @LD@
RANLIB = @RANLIB@
AR_FLAGS = rc
OBJDUMP = `if [ -f ${objroot}/../binutils/objdump ] ; \
then echo ${objroot}/../binutils/objdump ; \
else t='$(program_transform_name)'; echo objdump | sed -e $$t ; fi`
OBJCOPY = `if [ -f ${objroot}/../binutils/objcopy ] ; \
then echo ${objroot}/../binutils/objcopy ; \
else t='$(program_transform_name)'; echo objcopy | sed -e $$t ; fi`
SCRIPTS = $(srcdir)/msp430.ld $(srcdir)/msp430-sim.ld
SCRIPTS += $(srcdir)/msp430xl-sim.ld
SCRIPTS += $(srcdir)/msp430F5438A-s.ld
SCRIPTS += $(srcdir)/msp430F5438A-l.ld
CRT = gcrt0.o crt0.o crtn.o
SIM_BSP = libsim.a
LIBNOSYS = libnosys.a
SIM_OBJS = syscalls.o \
cio.o \
write.o \
sbrk.o
NOSYS_OBJS = nosyscalls.o \
cio.o \
write.o \
sbrk.o
#### Host specific Makefile fragment comes in here.
@host_makefile_frag@
# Override .S.o rule to pass assembler debugging flags
.S.o:
$(CC) -Wa,-gdwarf2 -Wa,-I$(srcdir) $(CFLAGS_FOR_TARGET) $(INCLUDES) $(CFLAGS) -c $<
all: $(CRT) $(SIM_BSP) $(LIBNOSYS) copy_scripts_to_objdir
$(SIM_BSP): $(SIM_OBJS)
$(AR) $(ARFLAGS) $@ $?
$(RANLIB) $@
$(LIBNOSYS): $(NOSYS_OBJS)
$(AR) $(ARFLAGS) $@ $?
$(RANLIB) $@
copy_scripts_to_objdir: $(SCRIPTS)
cp $(SCRIPTS) $(objdir)
# Dependencies
SDEPS = $(srcdir)/cio.h
abort.o : $(SDEPS)
argv.o : $(SDEPS)
argvlen.o : $(SDEPS)
chdir.o : $(SDEPS)
chmod.o : $(SDEPS)
close.o : $(SDEPS)
exit.o : $(SDEPS)
fstat.o : $(SDEPS)
getpid.o : $(SDEPS)
gettimeofday.o : $(SDEPS)
gcrt0.o: gcrt0.S crt0.S
kill.o : $(SDEPS)
link.o : $(SDEPS)
lseek.o : $(SDEPS)
mcount.o : $(SDEPS)
open.o : $(SDEPS)
read.o : $(SDEPS)
sigprocmask.o : $(SDEPS)
sleep.o : $(SDEPS)
stat.o : $(SDEPS)
time.o : $(SDEPS)
times.o : $(SDEPS)
unlink.o : $(SDEPS)
utime.o : $(SDEPS)
write.o : $(SDEPS)
install: $(CRT) $(SIM_BSP) $(LIBNOSYS) $(SCRIPTS)
for c in $(CRT) $(SIM_BSP) $(LIBNOSYS); do \
$(INSTALL_DATA) $$c $(tooldir)/lib${MULTISUBDIR}/$$c ;\
done
for c in $(SCRIPTS); do \
b=`basename $$c`; \
$(INSTALL_DATA) $$c $(tooldir)/lib${MULTISUBDIR}/$$b ;\
done
clean mostlyclean:
rm -f *.o *.a
distclean maintainer-clean realclean: clean
rm -f Makefile config.cache config.log config.status
.PHONY: info dvi doc install-info clean-info
info doc dvi:
install-info:
clean-info:
Makefile: Makefile.in config.status @host_makefile_frag_path@
$(SHELL) config.status
config.status: configure
$(SHELL) config.status --recheck

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/*
Copyright (c) 2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
#include "cio.h"
__CIOBUF__TYPE__ __CIOBUF__;
void
_libgloss_cio_hook (void)
{
__asm__ __volatile__ (" .global C$$IO$$");
__asm__ __volatile__ ("C$$IO$$: nop");
}

42
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/*
Copyright (c) 2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
#ifndef CIO_BUF_SIZE
#define CIO_BUF_SIZE 64
#endif
typedef struct {
unsigned char length[2];
unsigned char parms[9];
unsigned char buf[CIO_BUF_SIZE];
} __CIOBUF__TYPE__;
extern __CIOBUF__TYPE__ __CIOBUF__;
extern void _libgloss_cio_hook (void);
#define CIO_OPEN (0xF0)
#define CIO_CLOSE (0xF1)
#define CIO_READ (0xF2)
#define CIO_WRITE (0xF3)
#define CIO_LSEEK (0xF4)
#define CIO_UNLINK (0xF5)
#define CIO_GETENV (0xF6)
#define CIO_RENAME (0xF7)
#define CIO_GETTIME (0xF8)
#define CIO_GETCLK (0xF9)
#define CIO_SYNC (0xFF)

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67
libgloss/msp430/configure.in Normal file
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# Copyright (c) 2008, 2009, 2011, 2013 Red Hat, Inc. All rights reserved.
#
# This copyrighted material is made available to anyone wishing to use, modify,
# copy, or redistribute it subject to the terms and conditions of the BSD
# License. This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
# is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
# are incorporated in the source code or documentation are not subject to the BSD
# License and may only be used or replicated with the express permission of
# Red Hat, Inc.
dnl Process this file with autoconf to produce a configure script.
AC_PREREQ(2.59)
AC_INIT(crt0.S)
if test "${enable_shared}" = "yes" ; then
echo "Shared libraries not supported for cross compiling, ignored"
fi
if test "$srcdir" = "." ; then
if test "${with_target_subdir}" != "." ; then
libgloss_topdir="${srcdir}/${with_multisrctop}../../.."
else
libgloss_topdir="${srcdir}/${with_multisrctop}../.."
fi
else
libgloss_topdir="${srcdir}/../.."
fi
AC_CONFIG_AUX_DIR($libgloss_topdir)
AC_CANONICAL_SYSTEM
AC_ARG_PROGRAM
AC_PROG_INSTALL
LIB_AC_PROG_CC
AS=${AS-as}
AC_SUBST(AS)
AR=${AR-ar}
AC_SUBST(AR)
LD=${LD-ld}
AC_SUBST(LD)
AC_PROG_RANLIB
LIB_AM_PROG_AS
host_makefile_frag=${srcdir}/../config/default.mh
dnl We have to assign the same value to other variables because autoconf
dnl doesn't provide a mechanism to substitute a replacement keyword with
dnl arbitrary data or pathnames.
dnl
host_makefile_frag_path=$host_makefile_frag
AC_SUBST(host_makefile_frag_path)
AC_SUBST_FILE(host_makefile_frag)
AC_CONFIG_FILES(Makefile,
. ${libgloss_topdir}/config-ml.in,
srcdir=${srcdir}
target=${target}
with_multisubdir=${with_multisubdir}
ac_configure_args="${ac_configure_args} --enable-multilib"
CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
libgloss_topdir=${libgloss_topdir}
)
AC_OUTPUT

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/* Copyright (c) 2012-2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
#include "memmodel.h"
.section ".resetvec", "a"
__msp430_resetvec_hook:
.word __start
.section ".lowtext", "ax", @progbits
.global __start
__start:
mov_ #__stack, R1
;; Disable watchdog timer.
MOV #0x5a80, &0x15C
mov_ #__bssstart, R12
clr.w R13
mov.w #__bsssize, R14
#ifdef __MSP430X_LARGE__
clr.w R15 ; We assume that __bsssize is never > 64M
#endif
call_ #memset
mov_ #__datastart, R12
mov_ #__romdatastart, R13
;; memmove and memcpy do not currently work when src == dst
cmp_ R12, R13
jeq 1f
mov.w #__romdatacopysize, R14
#ifdef __MSP430X_LARGE__
clr.w R15 ; We assume that __romdatacopysize is never > 64M
#endif
call_ #memmove
1:
call_ #__msp430_init
clr.w R12 ; Set argc == 0
call_ #main
call_ #_exit
.word __msp430_resetvec_hook
;----------------------------------------
.global _msp430_run_init_array
.type _msp430_run_init_array,@function
_msp430_run_init_array:
mov_ #__init_array_start, R4
mov_ #__init_array_end, R5
mov_ #PTRsz, R6
br_ #_msp430_run_array
.global _msp430_run_preinit_array
.type _msp430_run_preinit_array,@function
_msp430_run_preinit_array:
mov_ #__preinit_array_start, R4
mov_ #__preinit_array_end, R5
mov_ #PTRsz, R6
br_ #_msp430_run_array
.global _msp430_run_fini_array
.type _msp430_run_fini_array,@function
_msp430_run_fini_array:
mov_ #__fini_array_start, R4
mov_ #__fini_array_end, R5
mov_ #-PTRsz, R6
br_ #_msp430_run_array
_msp430_run_array:
cmp_ R4, R5
jeq _msp430_run_done
mov_ @R4, R7
add_ R6, R4
call_ @R7
br_ _msp430_run_array
_msp430_run_done:
ret_
;----------------------------------------
.section .init,"ax"
.global __msp430_init
__msp430_init:
.section .fini,"ax"
.global __msp430_fini
__msp430_fini:
call_ #_msp430_run_fini_array

30
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/* Copyright (c) 2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
#include "memmodel.h"
.section .init,"ax"
call_ #_msp430_run_preinit_array
call_ #_msp430_run_init_array
ret_
.global __msp430_init_end
__msp430_init_end:
.section .fini,"ax"
ret_
.global __msp430_fini_end
__msp430_fini_end:
.text

17
libgloss/msp430/gcrt0.S Normal file
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/* Copyright (c) 2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
.text
.global _mcount
_mcount:
ret

41
libgloss/msp430/memmodel.h Normal file
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/* Copyright (c) 2012-2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
/* This file provides macros for various MSP430 instructions
which have similar, but not identical, versions when assembling
for the LARGE memory model. */
#ifdef __MSP430X_LARGE__
#define call_ CALLA
#define ret_ RETA
#define mov_ MOVA
#define movx_ MOVX
#define br_ BRA
#define cmp_ CMPA
#define add_ ADDA
#define PTRsz 4
#else
#define call_ CALL
#define ret_ RET
#define mov_ MOV
#define movx_ MOV
#define br_ BR
#define cmp_ CMP
#define add_ ADD
#define PTRsz 2
#endif

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/* Copyright (c) 2005,2008,2009,2011,2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
/* Default linker script, for normal executables */
OUTPUT_ARCH(msp430)
ENTRY(_start)
/* Do we need any of these for elf?
__DYNAMIC = 0; */
MEMORY {
RAM (w) : ORIGIN = 0x00200, LENGTH = 0x0ee00
RESETVEC (w) : ORIGIN = 0x0fffe, LENGTH = 0x00002
}
SECTIONS
{
.resetvec :
{
*(.resetvec)
} > RESETVEC
.rodata : {
. = ALIGN(2);
*(.plt)
*(.rodata .rodata.* .gnu.linkonce.r.* .const .const:*)
*(.rodata1)
*(.eh_frame_hdr)
KEEP (*(.eh_frame))
KEEP (*(.gcc_except_table)) *(.gcc_except_table.*)
PROVIDE (__preinit_array_start = .);
KEEP (*(.preinit_array))
PROVIDE (__preinit_array_end = .);
PROVIDE (__init_array_start = .);
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array))
PROVIDE (__init_array_end = .);
PROVIDE (__fini_array_start = .);
KEEP (*(.fini_array))
KEEP (*(SORT(.fini_array.*)))
PROVIDE (__fini_array_end = .);
LONG(0); /* Sentinel. */
/* gcc uses crtbegin.o to find the start of the constructors, so
we make sure it is first. Because this is a wildcard, it
doesn't matter if the user does not actually link against
crtbegin.o; the linker won't look for a file to match a
wildcard. The wildcard also means that it doesn't matter which
directory crtbegin.o is in. */
KEEP (*crtbegin*.o(.ctors))
/* We don't want to include the .ctor section from from the
crtend.o file until after the sorted ctors. The .ctor section
from the crtend file contains the end of ctors marker and it
must be last */
KEEP (*(EXCLUDE_FILE (*crtend*.o ) .ctors))
KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
KEEP (*crtbegin*.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend*.o ) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
} > RAM
.text :
{
. = ALIGN(2);
PROVIDE (_start = .);
*(.lowtext .text .stub .text.* .gnu.linkonce.t.* .text:*)
KEEP (*(.text.*personality*))
/* .gnu.warning sections are handled specially by elf32.em. */
*(.gnu.warning)
*(.interp .hash .dynsym .dynstr .gnu.version*)
PROVIDE (__etext = .);
PROVIDE (_etext = .);
PROVIDE (etext = .);
. = ALIGN(2);
KEEP (*(.init))
KEEP (*(.fini))
} > RAM
.data : {
. = ALIGN(2);
PROVIDE (__datastart = .);
KEEP (*(.jcr))
*(.data.rel.ro.local) *(.data.rel.ro*)
*(.dynamic)
*(.data .data.* .gnu.linkonce.d.*)
KEEP (*(.gnu.linkonce.d.*personality*))
SORT(CONSTRUCTORS)
*(.data1)
*(.got.plt) *(.got)
/* We want the small data sections together, so single-instruction offsets
can access them all, and initialized data all before uninitialized, so
we can shorten the on-disk segment size. */
. = ALIGN(2);
*(.sdata .sdata.* .gnu.linkonce.s.* D_2 D_1)
. = ALIGN(2);
_edata = .;
PROVIDE (edata = .);
PROVIDE (__dataend = .);
} > RAM
/* Note that crt0 assumes this is a multiple of two; all the
start/stop symbols are also assumed word-aligned. */
PROVIDE(__romdatastart = LOADADDR(.data));
PROVIDE (__romdatacopysize = SIZEOF(.data));
.bss : {
. = ALIGN(2);
PROVIDE (__bssstart = .);
*(.dynbss)
*(.sbss .sbss.*)
*(.bss .bss.* .gnu.linkonce.b.*)
. = ALIGN(2);
*(COMMON)
. = ALIGN(2);
PROVIDE (__bssend = .);
_end = .;
PROVIDE (end = .);
} > RAM
PROVIDE (__bsssize = SIZEOF(.bss));
.stack (ORIGIN (RAM) + LENGTH(RAM)) :
{
PROVIDE (__stack = .);
*(.stack)
}
/* The rest are all not normally part of the runtime image. */
.MP430.attributes 0 :
{
KEEP (*(.MSP430.attributes))
KEEP (*(.gnu.attributes))
KEEP (*(__TI_build_attributes))
}
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
/* DWARF debug sections.
Symbols in the DWARF debugging sections are relative to the beginning
of the section so we begin them at 0. */
/* DWARF 1 */
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
/* GNU DWARF 1 extensions */
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
/* DWARF 1.1 and DWARF 2 */
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
/* DWARF 2 */
.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
/* SGI/MIPS DWARF 2 extensions */
.debug_weaknames 0 : { *(.debug_weaknames) }
.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
/* DWARF 3 */
.debug_pubtypes 0 : { *(.debug_pubtypes) }
.debug_ranges 0 : { *(.debug_ranges) }
/* DWARF Extension. */
.debug_macro 0 : { *(.debug_macro) }
/DISCARD/ : { *(.note.GNU-stack) }
}

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/* Copyright (c) 2005,2008,2009,2011,2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
/* Default linker script, for normal executables */
OUTPUT_ARCH(msp430)
ENTRY(_start)
/* Do we need any of these for elf?
__DYNAMIC = 0; */
MEMORY {
RAM (w) : ORIGIN = 0x00200, LENGTH = 0x0ee00
RESETVEC (w) : ORIGIN = 0x0fffe, LENGTH = 0x00002
}
SECTIONS
{
.resetvec :
{
*(.resetvec)
} > RESETVEC
.rodata : {
. = ALIGN(2);
*(.plt)
*(.rodata .rodata.* .gnu.linkonce.r.* .const .const:*)
*(.rodata1)
*(.eh_frame_hdr)
KEEP (*(.eh_frame))
KEEP (*(.gcc_except_table)) *(.gcc_except_table.*)
PROVIDE (__preinit_array_start = .);
KEEP (*(.preinit_array))
PROVIDE (__preinit_array_end = .);
PROVIDE (__init_array_start = .);
KEEP (*(SORT(.init_array.*)))
KEEP (*(.init_array))
PROVIDE (__init_array_end = .);
PROVIDE (__fini_array_start = .);
KEEP (*(.fini_array))
KEEP (*(SORT(.fini_array.*)))
PROVIDE (__fini_array_end = .);
LONG(0); /* Sentinel. */
/* gcc uses crtbegin.o to find the start of the constructors, so
we make sure it is first. Because this is a wildcard, it
doesn't matter if the user does not actually link against
crtbegin.o; the linker won't look for a file to match a
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KEEP (*crtbegin*.o(.ctors))
/* We don't want to include the .ctor section from from the
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KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
KEEP (*crtbegin*.o(.dtors))
KEEP (*(EXCLUDE_FILE (*crtend*.o ) .dtors))
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
} > RAM
.text :
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PROVIDE (edata = .);
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/* Note that crt0 assumes this is a multiple of two; all the
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PROVIDE(__romdatastart = LOADADDR(.data));
PROVIDE (__romdatacopysize = SIZEOF(.data));
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KEEP (*(.MSP430.attributes))
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203
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@ -0,0 +1,203 @@
/* Copyright (c) 2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
/* Default linker script, for normal executables */
OUTPUT_ARCH(msp430)
ENTRY(_start)
/* Do we need any of these for elf?
__DYNAMIC = 0; */
MEMORY {
RAM (w) : ORIGIN = 0x01c00, LENGTH = 0x04000
LOWROM (w) : ORIGIN = 0x05c00, LENGTH = 0x0a3fe
RESETVEC (w) : ORIGIN = 0x0fffe, LENGTH = 0x00002
ROM (w) : ORIGIN = 0x10000, LENGTH = 0x35c00
}
SECTIONS
{
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.rodata : {
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/* This is just for crt0.S */
.lowtext :
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PROVIDE (_start = .);
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*(.lowtext)
} > LOWROM
.text :
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/* The rest are all not normally part of the runtime image. */
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189
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View File

@ -0,0 +1,189 @@
/* Copyright (c) 2005,2008,2009,2011,2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
/* Default linker script, for normal executables */
OUTPUT_ARCH(msp430)
ENTRY(_start)
/* Do we need any of these for elf?
__DYNAMIC = 0; */
MEMORY {
RAM (w) : ORIGIN = 0x01c00, LENGTH = 0x04000
ROM (w) : ORIGIN = 0x05c00, LENGTH = 0x0a3fe
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KEEP (*(SORT(.ctors.*)))
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KEEP (*crtbegin*.o(.dtors))
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203
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@ -0,0 +1,203 @@
/* Copyright (c) 2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
/* Default linker script, for normal executables */
OUTPUT_ARCH(msp430)
ENTRY(_start)
/* Do we need any of these for elf?
__DYNAMIC = 0; */
MEMORY {
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/* DWARF 3 */
.debug_pubtypes 0 : { *(.debug_pubtypes) }
.debug_ranges 0 : { *(.debug_ranges) }
/* DWARF Extension. */
.debug_macro 0 : { *(.debug_macro) }
/DISCARD/ : { *(.note.GNU-stack) }
}

69
libgloss/msp430/nosyscalls.S Normal file
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/* Copyright (c) 2012, 2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
/* Empty syscall definitions for when we run on real hardware. */
#include "../syscall.h"
#include "memmodel.h"
#define ENOSYS 88
.macro sc,a
sc2 \a,\a
.endm
.macro sc2,name,num
.weak \name
.global \name
\name:
call_ #__errno
movx_ #ENOSYS, @R12
MOV.W #-1,R12
ret_
.endm
.weak exit
.weak _exit
.global exit
.global _exit
exit:
_exit:
/* For some reason, the board fails to stop at a breakpoint
placed on top of a software breakpoint instruction. */
/* MOV.B #0,R3 ; this is a software breakpoint instruction */
1: br_ #1b
#define SC(n) sc2 n,SYS_##n
SC (open)
SC (close)
SC (read)
/* SC (write)*/
SC (fstat)
SC (lseek)
SC (kill)
.weak isatty
.global isatty
isatty:
.weak _isatty
.global _isatty
_isatty:
MOV #1,R12
ret_
.weak getpid
.global getpid
getpid:
MOV #42,R12
ret_

33
libgloss/msp430/sbrk.c Normal file
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/* Copyright (c) 2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
char *
_sbrk (int adj)
{
extern char end[]; /* Defined in the linker script. */
static char * heap = end;
char * rv = heap;
char * sp = (char *) & sp; /* Stack grows down, heap grows up... */
if (heap + adj > sp)
{
#define MESSAGE "Heap and stack collision\n"
write (1, MESSAGE, sizeof MESSAGE);
abort ();
}
heap += adj;
return rv;
}
char * sbrk (int) __attribute__((weak, alias ("_sbrk")));

66
libgloss/msp430/syscalls.S Normal file
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/* Copyright (c) 2012, 2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
/* Be wary: the lower N bits of the *address* of the function
determines the syscall used by the simulator. Thus, the addresses
listed here depend on the syscall numbers in ../syscalls.h. */
/* As per the MSP430x200 Family Users Guide, section 1.5, "An
instruction fetch from the address range 0x0000 - 0x01FF will reset
the device." We take advantage of that to do syscalls in the
simulator, by trying to execute specific addresses in that range
and letting the simulator catch them while simulating the CALL
instruction. In theory, this is an operation that the physical
hardware will never attempt to do, so it won't interfere with the
simulation's accuracy (i.e. we aren't abusing holes in the opcode
map, for example). */
#include "../syscall.h"
#include "memmodel.h"
.macro sc,a
sc2 \a,\a
.endm
.macro sc2,name,num
.weak \name
.global \name
\name = 0x180 + \num
.endm
#define SC(n) sc2 n,SYS_##n
sc2 _exit,SYS_exit
SC (exit)
SC (open)
SC (close)
SC (read)
/* SC (write)*/
SC (fstat)
SC (lseek)
SC (kill)
.weak isatty
.global isatty
isatty:
.weak _isatty
.global _isatty
_isatty:
MOV #1,R12
ret_
.weak getpid
.global getpid
getpid:
MOV #42,R12
ret_

59
libgloss/msp430/write.c Normal file
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/* Copyright (c) 2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
#include <string.h>
#include "cio.h"
static int
write_chunk (int fd, char *buf, int len)
{
__CIOBUF__.length[0] = len;
__CIOBUF__.length[1] = len >> 8;
__CIOBUF__.parms[0] = CIO_WRITE;
__CIOBUF__.parms[1] = fd;
__CIOBUF__.parms[2] = fd >> 8;
__CIOBUF__.parms[3] = len;
__CIOBUF__.parms[4] = len >> 8;
memcpy (__CIOBUF__.buf, buf, len);
_libgloss_cio_hook ();
return __CIOBUF__.parms[0] + __CIOBUF__.parms[1] * 256;
}
#include <stdio.h>
int
write (int fd, char *buf, int len)
{
int rv = 0;
int c;
#if 0
if (fd == 2)
fprintf (stderr, "%.*s", buf, len);
else if (fd == 1)
printf ("%.*s", buf, len);
#endif
while (len > 0)
{
int l = (len > CIO_BUF_SIZE) ? CIO_BUF_SIZE : len;
c = write_chunk (fd, buf, l);
if (c < 0)
return c;
rv += l;
len -= l;
buf += l;
}
return c;
}