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Add C-SKY port for libgloss

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This patch contain all libgloss for C-SKY

Contributor list:
  - Lifang Xia <lifang_xia@c-sky.com>
  - Jojo R <jiejie_rong@c-sky.com>
  - Xianmiao Qu <xianmiao_qu@c-sky.com>
  - Yunhai Shang <yunhai_shang@c-sky.com>
This commit is contained in:
Jojo R 2020-09-25 11:01:25 -04:00 committed by Jeff Johnston
parent c1f7c4d1b6
commit 648365e0e9
28 changed files with 6831 additions and 0 deletions
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26
COPYING.LIBGLOSS
View File

@ -452,3 +452,29 @@ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
(22) CodeSourcery, Inc (csky-* targets)
Copyright (c) 2006 CodeSourcery Inc
The authors hereby grant permission to use, copy, modify, distribute,
and license this software and its documentation for any purpose, provided
that existing copyright notices are retained in all copies and that this
notice is included verbatim in any distributions. No written agreement,
license, or royalty fee is required for any of the authorized uses.
Modifications to this software may be copyrighted by their authors
and need not follow the licensing terms described here, provided that
the new terms are clearly indicated on the first page of each file where
they apply.
(23) - C-SKY Microsystems (csky-* targets)
Copyright (c) 2020 C-SKY Microsystems 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 FreeBSD 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.

5
libgloss/configure vendored
View File

@ -667,6 +667,7 @@ CCASFLAGS'
ac_subdirs_all='doc
aarch64
arc
csky
epiphany
i386
m32r
@ -2409,6 +2410,10 @@ case "${target}" in
arc*-*-*)
subdirs="$subdirs arc"
;;
csky*-*-*)
subdirs="$subdirs csky"
;;
epiphany-*-*)
subdirs="$subdirs epiphany"

3
libgloss/configure.in
View File

@ -41,6 +41,9 @@ case "${target}" in
arc*-*-*)
AC_CONFIG_SUBDIRS(arc)
;;
csky*-*-*)
AC_CONFIG_SUBDIRS(csky)
;;
epiphany-*-*)
AC_CONFIG_SUBDIRS(epiphany)
config_testsuite=true

128
libgloss/csky/Makefile.in Normal file
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@ -0,0 +1,128 @@
# Copyright (c) 1995, 1996, 2001 Cygnus Support -*- mode:makefile -*-
#
# The authors hereby grant permission to use, copy, modify, distribute,
# and license this software and its documentation for any purpose, provided
# that existing copyright notices are retained in all copies and that this
# notice is included verbatim in any distributions. No written agreement,
# license, or royalty fee is required for any of the authorized uses.
# Modifications to this software may be copyrighted by their authors
# and need not follow the licensing terms described here, provided that
# the new terms are clearly indicated on the first page of each file where
# they apply.
#
# csky semihosting support.
#
DESTDIR =
VPATH = @srcdir@
srcdir = @srcdir@
objdir = .
srcroot = $(srcdir)/../..
objroot = $(objdir)/../..
prefix = @prefix@
exec_prefix = @exec_prefix@
host_alias = @host_alias@
target_alias = @target_alias@
program_transform_name = @program_transform_name@
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 = qv
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`
DO = @DO@
CRT0=crt0.S
#
# here's all the hosted stuff
#
HOSTED_BSP= libsemi.a
HOSTED_SRS= io-semi.S
HOSTED_SRC= sbrk.c io-gdb.c io-exit.c io-close.c io-fstat.c io-gettimeofday.c \
io-lseek.c io-read.c io-system.c io-unlink.c io-exit.c \
io-gdb.c io-isatty.c io-open.c io-rename.c io-stat.c \
io-time.c io-write.c kill.o getpid.o
HOSTED_OBJS= $(patsubst %.c,%.o,$(HOSTED_SRC))
INCLUDES+= -I/home/xialf/workspace/newlib-2.5.0.20171222/newlib/libc/include
# Host specific makefile fragment comes in here.
@host_makefile_frag@
all :: $(HOSTED_BSP)
#
# here's where we build the board support packages for each target
#
# build hosted library
$(HOSTED_OBJS) : %.o : %.c
$(CC) $(CFLAGS_FOR_TARGET) $(CFLAGS) -nostdlib -DHOSTED=1 $(INCLUDES) -c $< -o $@
$(HOSTED_SRS:%.S=%.o): %.o : %.S
$(CC) $(CFLAGS_FOR_TARGET) $(CFLAGS) -nostdlib -DHOSTED=1 $(INCLUDES) -c $< -o $@
$(HOSTED_BSP): $(HOSTED_OBJS) $(HOSTED_SRS:%.S=%.o)
${AR} ${ARFLAGS} $@ $^
${RANLIB} $@
crt0.o: $(CRT0)
$(CC) $(CFLAGS_FOR_TARGET) $(CFLAGS) -c $< -o $@
.PHONY: install info dvi doc install-info clean-info
install:: $(DO:%=install_%) crt0.o
$(INSTALL_PROGRAM) crt0.o $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$(crt0.o)
$(DO:%=install_%): install_hosted
.PHONY:install_hosted
install_hosted::
$(INSTALL_PROGRAM) $(HOSTED_BSP) $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$(HOSTED_BSP)
# target specific makefile fragment comes in here.
@target_makefile_frag@
clean mostlyclean:
rm -f a.out core *.i *~ *.a *.o *-test *.srec *.dis *.x *.map
distclean maintainer-clean realclean: clean
rm -f Makefile config.cache config.log config.status
info dvi doc:
install-info:
clean-info:
Makefile: Makefile.in config.status @host_makefile_frag_path@ @target_makefile_frag_path@
$(SHELL) config.status
config.status: configure
$(SHELL) config.status --recheck

409
libgloss/csky/aclocal.m4 vendored Normal file
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@ -0,0 +1,409 @@
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93
libgloss/csky/configure.in Normal file
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@ -0,0 +1,93 @@
# Copyright (c) 1995, 1996 Cygnus Support
#
# The authors hereby grant permission to use, copy, modify, distribute,
# and license this software and its documentation for any purpose, provided
# that existing copyright notices are retained in all copies and that this
# notice is included verbatim in any distributions. No written agreement,
# license, or royalty fee is required for any of the authorized uses.
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libgloss_topdir="${with_multisrctop}../../.."
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dnl
host_makefile_frag_path=$host_makefile_frag
AC_SUBST(host_makefile_frag_path)
AC_SUBST_FILE(host_makefile_frag)
target_makefile_frag_path=$target_makefile_frag
AC_SUBST(target_makefile_frag_path)
AC_SUBST_FILE(target_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

180
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/*
* crt0.S -- startup codes for CK-CPU.
*
* Define a exception vector table
*
* Initial PSR register.
* Initial VBR register, relocate exception vector table.
* Initial sp(stack pointer) register.
* Initial MGU (for ckcpu having MGU)
* Initial Cache.
* Initial SPM (for ckcpu having SPM).
* Initial BSS section to "0"
* Then goto "main".
*
* Copyright (c) 2020 C-SKY Microsystems All rights reserved.
*/
.file "crt0.S"
/*
* MGU & CACHE macro from "ck5a6.h"
*
* CONFIG_CKCPU_MGU_BLOCKS ---- MGU block priority setting value
* CONFIG_CKCPU_MGU_REGION(1-4)
* ---- MGU (1-4) block base address and size.
* CONFIG_CKCPU_ICACHE ---- Instruction cache enable
* CONFIG_CKCPU_DCACHE ---- Data cache enable
*
* SPM macro from "ck5a6.h"
*
* CONFIG_CKCPU_SPM ---- CKCPU having SPM ?
* CONFIG_CKCPU_SPM_ENABLE ---- SPM Enable
* CONFIG_CKCPU_ISPM_MODE ---- Instruction SPM Mode(cache/local memory)
* CONFIG_CKCPU_DSPM_MODE ---- Data SPM Mode (cache/local memory)
* CONFIG_CKCPU_ISPM_ADDRESS
* ---- Instruction SPM external memory base address,
* Just for Local Memory Mode
* CONFIG_CKCPU_DSPM_ADDRESS
* ---- Data SPM external memory base address, Just
* for Local Memory Mode
* CONFIG_CKCPU_ISPM_TRANSFER
* ---- The content in Instruction SPM must be
* initialed, Just for Local Memory Mode
* CONFIG_CKCPU_DSPM_TRANSFER
* ---- The content in Data SPM must be initialed,
* Just for Local Memory Mode
*/
/*
* For importing variable or functions from script file "ckcpu.ld".
*/
.import __stack /* The stack pointer from linking script file */
.import __fstack /* The fast interrupt stack from linking script file */
.import __sbss /* The end of bss from linking script file */
.import __ebss /* The end of bss from linking script file */
.import __csky_exit /* For QEMU exit. */
/*
* For importing variable or functions from other c or assemble files.
*/
.import main /* The c codes entry */
.import spm_init /* Initial ckcpu SPM */
.import exit
.import __libc_init_array
/*
* For importing variable or functions from entry.S.
*/
/* default exception service routine */
/*
.import default_exception_handler
*/
/* For exporting varialbe or functions */
.export ckcpu_vsr_table /* Vector table base address. */
.export __start /* The system entry. */
.text
/* Vector table space. */
.align 10
ckcpu_vsr_table:
.rept 128
.long __default_exception_handler
.endr
/* The ckcpu startup codes. */
.text
/*
*
* This is the codes first entry point. This is where it all
* begins...
*/
.long __start
__start:
/*
* Init psr value, enable exception, disable interrupt and fast interrupt.
* psr = 0x80000100
*/
lrw r7, 0
bseti r7, 31
bseti r7, 8
mtcr r7, psr
/*
* Setup initial vector base table for interrupts and exceptions
*/
lrw r6, ckcpu_vsr_table
mtcr r6, vbr
/* Initialize the normal stack pointer from the linker definition. */
lrw r7, __stack
mov sp, r7
#ifdef FAST_INTERRUPT_ENABLE
/* Initialize the fast interrupt stack pointer . */
psrset af
lrw r6, __fstack
mov sp, r6
psrclr af
#endif
/*
* Initial CKCPU MGU & Cache
* Step 1: Disable MGU & Cache.
*/
movi r7, 0
mtcr r7, cr18
#if 0
/*
* Zero out the bss region.
* NOTE: __sbss must align 4
*/
lrw r7, __sbss /* Get start of bss from linking script file */
lrw r6, __ebss /* Get end of bss from linking script file */
subu r6, r7 /* Calculate size of bss */
lsri r6, r6, 2 /* Size of whole words */
cmpnei r6, 0
bf __goto_c
movi r5, 0 /* Set zero value to write */
2:
stw r5, (r7) /* Zero next word */
addi r7, 4 /* Increase bss pointer */
subi r6, 1 /* Decrease counter */
cmpnei r6, 0
bt 2b /* Repeat for all bss */
#endif
/*
* Assember start up done, C codes start here.
*/
__goto_c:
/*jsri main*/
lrw r5, __libc_init_array
jsr r5
/*Set the argc and argv to NULL. */
movi r0, 0
movi r1, 0
lrw r5, main
jsr r5
/* Should never get here. */
jbsr exit
__csky_exit:
br __csky_exit
__default_exception_handler:
lrw r4, __csky_exit
movi r5, 0x2
stw r5, (r4, 0)
br __default_exception_handler
rte
.data
.align 4
__stack_bottom:
.rept 128
.long 0x0
.endr

22
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/*
* kill.c
*
* Copyright (c) 2018 Mentor Graphics
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
/* Minimal implementation of getpid for a target system without processes. */
int
getpid ()
{
return 1;
}

43
libgloss/csky/io-close.c Normal file
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/*
* io-close.c --
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include <unistd.h>
#include <errno.h>
#define IO close
#include "io.h"
/*
* close -- close a file descriptor.
* input parameters:
* 0 : file descriptor
* output parameters:
* 0 : errno
* result : r0
*/
int close (int fd)
{
#if HOSTED
gdb_parambuf_t parameters;
int ret = 0;
parameters[0] = (uint32_t) fd;
ret = __hosted (HOSTED_CLOSE, parameters);
errno = __hosted_from_gdb_errno (parameters[0]);
return ret;
#else
return 0;
#endif
}

29
libgloss/csky/io-exit.c Normal file
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/*
* io-exit.c --
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#if HOSTED
#include "io.h"
/*
* _exit -- Exit from the application.
*/
void __attribute__ ((noreturn)) _exit (int code)
{
while (1)
__hosted (HOSTED_EXIT, (void *)code);
}
#endif

50
libgloss/csky/io-fstat.c Normal file
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/*
* io-fstat.c --
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#define IO fstat
#include "io.h"
/*
* fstat -- get file information
* input parameters:
* 0 : file descriptor
* 1 : stat buf ptr
* output parameters:
* 0 : errno
* result : r0
*/
int fstat (int fd, struct stat *buf)
{
#if HOSTED
gdb_parambuf_t parameters;
struct gdb_stat gbuf;
int ret = 0;
parameters[0] = (uint32_t) fd;
parameters[1] = (uint32_t) &gbuf;
ret = __hosted (HOSTED_FSTAT, parameters);
__hosted_from_gdb_stat (&gbuf, buf);
errno = __hosted_from_gdb_errno (parameters[0]);
return ret;
#else
errno = ENOSYS;
return -1;
#endif
}

140
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/*
* hosted io support for GDB's remote fileio protocol
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include "io.h"
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
gdb_mode_t
__hosted_to_gdb_mode_t (mode_t m)
{
gdb_mode_t result = 0;
if (m & S_IFREG)
result |= GDB_S_IFREG;
if (m & S_IFDIR)
result |= GDB_S_IFDIR;
if (m & S_IRUSR)
result |= GDB_S_IRUSR;
if (m & S_IWUSR)
result |= GDB_S_IWUSR;
if (m & S_IXUSR)
result |= GDB_S_IXUSR;
if (m & S_IRGRP)
result |= GDB_S_IRGRP;
if (m & S_IWGRP)
result |= GDB_S_IWGRP;
if (m & S_IXGRP)
result |= GDB_S_IXGRP;
if (m & S_IROTH)
result |= GDB_S_IROTH;
if (m & S_IWOTH)
result |= GDB_S_IWOTH;
if (m & S_IXOTH)
result |= GDB_S_IXOTH;
return result;
}
int32_t
__hosted_to_gdb_open_flags (int f)
{
int32_t result = 0;
if (f & O_RDONLY)
result |= GDB_O_RDONLY;
if (f & O_WRONLY)
result |= GDB_O_WRONLY;
if (f & O_RDWR)
result |= GDB_O_RDWR;
if (f & O_APPEND)
result |= GDB_O_APPEND;
if (f & O_CREAT)
result |= GDB_O_CREAT;
if (f & O_TRUNC)
result |= GDB_O_TRUNC;
if (f & O_EXCL)
result |= GDB_O_EXCL;
return result;
}
int32_t
__hosted_to_gdb_lseek_flags (int f)
{
if (f == SEEK_CUR)
return GDB_SEEK_CUR;
else if (f == SEEK_END)
return GDB_SEEK_END;
else
return GDB_SEEK_SET;
}
void
__hosted_from_gdb_stat (const struct gdb_stat *gs,
struct stat *s)
{
s->st_dev = gs->st_dev;
s->st_ino = gs->st_ino;
s->st_mode = gs->st_mode;
s->st_nlink = gs->st_nlink;
s->st_uid = gs->st_uid;
s->st_gid = gs->st_gid;
s->st_rdev = gs->st_rdev;
s->st_size = gs->st_size;
s->st_blksize = gs->st_blksize;
s->st_blocks = gs->st_blocks;
s->st_atim.tv_sec = gs->st_atim;
s->st_mtim.tv_sec = gs->st_mtim;
s->st_ctim.tv_sec = gs->st_ctim;
}
void
__hosted_from_gdb_timeval (const struct gdb_timeval *gt,
struct timeval *t)
{
t->tv_sec = gt->tv_sec;
t->tv_usec = gt->tv_usec;
}
int
__hosted_from_gdb_errno (int32_t err)
{
switch (err)
{
case 0: return 0;
case GDB_EPERM: return EPERM;
case GDB_ENOENT: return ENOENT;
case GDB_EINTR: return EINTR;
case GDB_EBADF: return EBADF;
case GDB_EACCES: return EACCES;
case GDB_EFAULT: return EFAULT;
case GDB_EBUSY: return EBUSY;
case GDB_EEXIST: return EEXIST;
case GDB_ENODEV: return ENODEV;
case GDB_ENOTDIR: return ENOTDIR;
case GDB_EISDIR: return EISDIR;
case GDB_EINVAL: return EINVAL;
case GDB_ENFILE: return ENFILE;
case GDB_EMFILE: return EMFILE;
case GDB_EFBIG: return EFBIG;
case GDB_ENOSPC: return ENOSPC;
case GDB_ESPIPE: return ESPIPE;
case GDB_EROFS: return EROFS;
case GDB_ENAMETOOLONG: return ENAMETOOLONG;
case GDB_EUNKNOWN:
default:
return EIO;
}
}

55
libgloss/csky/io-gettimeofday.c Normal file
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/*
* io-gettimeofday.c --
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include <sys/time.h>
#include <errno.h>
#define IO gettimeofday
#include "io.h"
/*
* gettimeofday -- get the current time
* input parameters:
* 0 : timeval ptr
* output parameters:
* 0 : errno
* result : r0
*/
int gettimeofday (struct timeval *tv, void *tzvp)
{
#if HOSTED
gdb_parambuf_t parameters;
struct gdb_timeval gtv;
struct timezone *tz = tzvp;
int ret = 0;
if (!tv)
return 0;
if (tz)
{
errno = EINVAL;
return -1;
}
parameters[0] = (uint32_t) &gtv;
parameters[1] = NULL;
ret = __hosted (HOSTED_GETTIMEOFDAY, parameters);
__hosted_from_gdb_timeval (&gtv, tv);
errno = __hosted_from_gdb_errno (parameters[0]);
return ret;
#else
errno = ENOSYS;
return -1;
#endif
}

43
libgloss/csky/io-isatty.c Normal file
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/*
* io-isatty.c --
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include <unistd.h>
#include <errno.h>
#define IO isatty
#include "io.h"
/*
* isatty -- check if fd is a terminal
* input parameters:
* 0 : file descriptor
* output parameters:
* 0 : errno
* result : r0
*/
int isatty (int fd)
{
#if HOSTED
gdb_parambuf_t parameters;
parameters[0] = (uint32_t) fd;
int ret;
ret = __hosted (HOSTED_ISATTY, parameters);
errno = __hosted_from_gdb_errno (parameters[0]);
return ret;
#else
return 1;
#endif
}

49
libgloss/csky/io-lseek.c Normal file
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/*
* io-lseek.c --
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include <sys/types.h>
#include <unistd.h>
#include <errno.h>
#define IO lseek
#include "io.h"
/*
* lseek -- reposition a file descriptor
* input parameters:
* 0 : file descriptor
* 1 : offset
* 2 : seek flag
* output parameters:
* 0 : errno
* result : r0
*/
off_t lseek (int fd, off_t offset, int whence)
{
#if HOSTED
gdb_parambuf_t parameters;
int ret;
parameters[0] = (uint32_t) fd;
parameters[1] = (uint32_t) offset;
parameters[2] = __hosted_to_gdb_lseek_flags (whence);
ret = __hosted (HOSTED_LSEEK, parameters);
errno = __hosted_from_gdb_errno (parameters[0]);
return ret;
#else
errno = ENOSYS;
return -1;
#endif
}

62
libgloss/csky/io-open.c Normal file
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/*
* io-open.c --
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#define IO open
#include "io.h"
/*
* open -- Open a file.
* input parameters:
* 0 : fname ptr
* 1 : fname length
* 2 : flags
* 3 : mode
* output parameters:
* 0 : errno
* result : r0
*/
int open (const char *fname, int flags, ...)
{
#if HOSTED
gdb_parambuf_t parameters;
int ret;
parameters[0] = (uint32_t) fname;
parameters[1] = strlen (fname);
parameters[2] = __hosted_to_gdb_open_flags (flags);
if (flags & O_CREAT)
{
va_list ap;
va_start (ap, flags);
parameters[3] = __hosted_to_gdb_mode_t (va_arg (ap, mode_t));
va_end (ap);
}
else
parameters[3] = 0;
ret =__hosted (HOSTED_OPEN, parameters);
errno = __hosted_from_gdb_errno (parameters[0]);
return ret;
#else
errno = ENOSYS;
return -1;
#endif
}

48
libgloss/csky/io-read.c Normal file
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/*
* semi-read.c --
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include <unistd.h>
#include <errno.h>
#define IO read
#include "io.h"
/*
* read -- read from a file descriptor
* input parameters:
* 0 : file descriptor
* 1 : buf ptr
* 2 : count
* output parameters:
* 0 : errno
* result : r0
*/
ssize_t read (int fd, void *buf, size_t count)
{
#if HOSTED
gdb_parambuf_t parameters;
int ret;
parameters[0] = (uint32_t) fd;
parameters[1] = (uint32_t) buf;
parameters[2] = (uint32_t) count;
ret = __hosted (HOSTED_READ, parameters);
errno = __hosted_from_gdb_errno (parameters[0]);
return ret;
#else
errno = ENOSYS;
return -1;
#endif
}

51
libgloss/csky/io-rename.c Normal file
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/*
* io-rename.c --
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#define IO rename
#include "io.h"
/*
* rename -- rename a file
* input parameters:
* 0 : oldname ptr
* 1 : oldname length
* 2 : newname ptr
* 3 : newname length
* output parameters:
* 0 : result
* 1 : errno
*/
int _rename (const char *oldpath, const char *newpath)
{
#if HOSTED
gdb_parambuf_t parameters;
int ret;
parameters[0] = (uint32_t) oldpath;
parameters[1] = (uint32_t) strlen (oldpath);
parameters[2] = (uint32_t) newpath;
parameters[3] = (uint32_t) strlen (newpath);
ret = __hosted (HOSTED_RENAME, parameters);
errno = __hosted_from_gdb_errno (parameters[0]);
return ret;
#else
errno = ENOSYS;
return -1;
#endif
}

22
libgloss/csky/io-semi.S Normal file
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/* Copyright (c) 2020 C-SKY Microsystems 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 FreeBSD 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.
*/
/* int __hosted (int sys_operate, int *args); */
.text
.global __hosted
.type __hosted, @function
.align 2
__hosted:
nop
bkpt
.long 0x7fff7fff
rts

54
libgloss/csky/io-stat.c Normal file
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/*
* io-stat.c --
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#define IO stat
#include "io.h"
/*
* stat -- get file information
* input parameters:
* 0 : filename ptr
* 1 : filename length
* 2 : stat buf ptr
* output parameters:
* 0 : errno
* result : r0
*/
int stat (const char *__restrict filename, struct stat *__restrict buf)
{
#if HOSTED
gdb_parambuf_t parameters;
struct gdb_stat gbuf;
int ret;
parameters[0] = (uint32_t) filename;
parameters[1] = (uint32_t) strlen (filename);
parameters[2] = (uint32_t) &gbuf;
ret = __hosted (HOSTED_STAT, parameters);
__hosted_from_gdb_stat (&gbuf, buf);
errno = __hosted_from_gdb_errno (parameters[0]);
return ret;
#else
errno = ENOSYS;
return -1;
#endif
}

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/*
* io-system.c --
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/wait.h>
#define IO _system
#include "io.h"
/*
* system: execute command on (remote) host
* input parameters:
* 0 : command ptr
* 1 : command length
* output parameters:
* 0 : errno
* result : r0
*/
int _system (const char *command)
{
#if HOSTED
int e;
gdb_parambuf_t parameters;
parameters[0] = (uint32_t) command;
parameters[1] = command ? (uint32_t) strlen (command) : 0;
e = __hosted (HOSTED_SYSTEM, parameters);
errno = __hosted_from_gdb_errno (parameters[0]);
if (e >= 0 && command)
{
/* We have to convert e, an exit status to the encoded status of
the command. To avoid hard coding the exit status, we simply
loop until we find the right position. */
int exit_code;
for (exit_code = e; e && WEXITSTATUS (e) != exit_code; e <<= 1)
continue;
}
return e;
#else
if (!command)
return 0;
errno = ENOSYS;
return -1;
#endif
}

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/*
* io-time.c --
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include <sys/time.h>
#include <errno.h>
#define IO time
#include "io.h"
/*
* time -- get the current time
* input parameters:
* 0 : timeval ptr
* return:
* tv_sec if success. Otherwise -1.
*/
time_t time (time_t *t)
{
#if HOSTED
struct timeval tv;
if (gettimeofday (&tv, NULL))
return -1;
if (t)
*t = tv.tv_sec;
return tv.tv_sec;
#else
errno = ENOSYS;
return -1;
#endif
}

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/*
* io-unlink.c --
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#define IO unlink
#include "io.h"
/*
* unlink -- unlink (delete) a file
* input parameters:
* 0 : filename ptr
* 1 : filename length
* output parameters:
* 0 : errno
* result : r0
*/
int unlink (const char *path)
{
#if HOSTED
gdb_parambuf_t parameters;
int ret;
parameters[0] = (uint32_t) path;
parameters[1] = (uint32_t) strlen (path) + 1;
ret = __hosted (HOSTED_UNLINK, parameters);
errno = __hosted_from_gdb_errno (parameters[0]);
return ret;
#else
errno = ENOSYS;
return -1;
#endif
}

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/*
* io-write.c --
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#include <unistd.h>
#include <errno.h>
#define IO write
#include "io.h"
/*
* write -- write to a file descriptor
* input parameters:
* 0 : file descriptor
* 1 : buf ptr
* 2 : count
* output parameters:
* 0 : errno
* result : r0
*/
ssize_t write (int fd, const void *buf, size_t count)
{
#if HOSTED
gdb_parambuf_t parameters;
int ret = 0;
parameters[0] = (uint32_t) fd;
parameters[1] = (uint32_t) buf;
parameters[2] = (uint32_t) count;
ret = __hosted (HOSTED_WRITE, parameters);
errno = __hosted_from_gdb_errno (parameters[0]);
return ret;
#else
errno = ENOSYS;
return -1;
#endif
}

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/*
* hosted & unhosted io support.
*
* Copyright (c) 2006 CodeSourcery Inc
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#if HOSTED
#include <stdint.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/stat.h>
#define HOSTED_EXIT 0
#define HOSTED_INIT_SIM 1
#define HOSTED_OPEN 2
#define HOSTED_CLOSE 3
#define HOSTED_READ 4
#define HOSTED_WRITE 5
#define HOSTED_LSEEK 6
#define HOSTED_RENAME 7
#define HOSTED_UNLINK 8
#define HOSTED_STAT 9
#define HOSTED_FSTAT 10
#define HOSTED_GETTIMEOFDAY 11
#define HOSTED_ISATTY 12
#define HOSTED_SYSTEM 13
/* This function is provided by the board's BSP, because the precise
mechanism of informing gdb is board specific. */
extern int __io_hosted (int func, void *args);
/* Protocol specific representation of datatypes, as specified in D.9.11
* of the GDB manual. */
typedef uint32_t gdb_mode_t;
typedef uint32_t gdb_time_t;
struct gdb_stat {
uint32_t st_dev; /* device */
uint32_t st_ino; /* inode */
gdb_mode_t st_mode; /* protection */
uint32_t st_nlink; /* number of hard links */
uint32_t st_uid; /* user ID of owner */
uint32_t st_gid; /* group ID of owner */
uint32_t st_rdev; /* device type (if inode device) */
uint64_t st_size; /* total size, in bytes */
uint64_t st_blksize; /* blocksize for filesystem I/O */
uint64_t st_blocks; /* number of blocks allocated */
gdb_time_t st_atim; /* time of last access */
gdb_time_t st_mtim; /* time of last modification */
gdb_time_t st_ctim; /* time of last change */
};
struct gdb_timeval {
gdb_time_t tv_sec; /* second */
uint64_t tv_usec; /* microsecond */
};
/* Parameters are passed between the library and the debugging stub
* in a fixed-size buffer.
*/
typedef uint32_t gdb_parambuf_t[4];
/* open flags */
#define GDB_O_RDONLY 0x0
#define GDB_O_WRONLY 0x1
#define GDB_O_RDWR 0x2
#define GDB_O_APPEND 0x8
#define GDB_O_CREAT 0x200
#define GDB_O_TRUNC 0x400
#define GDB_O_EXCL 0x800
/* mode_t values */
#define GDB_S_IFREG 0100000
#define GDB_S_IFDIR 040000
#define GDB_S_IRUSR 0400
#define GDB_S_IWUSR 0200
#define GDB_S_IXUSR 0100
#define GDB_S_IRGRP 040
#define GDB_S_IWGRP 020
#define GDB_S_IXGRP 010
#define GDB_S_IROTH 04
#define GDB_S_IWOTH 02
#define GDB_S_IXOTH 01
/* errno values */
#define GDB_EPERM 1
#define GDB_ENOENT 2
#define GDB_EINTR 4
#define GDB_EBADF 9
#define GDB_EACCES 13
#define GDB_EFAULT 14
#define GDB_EBUSY 16
#define GDB_EEXIST 17
#define GDB_ENODEV 19
#define GDB_ENOTDIR 20
#define GDB_EISDIR 21
#define GDB_EINVAL 22
#define GDB_ENFILE 23
#define GDB_EMFILE 24
#define GDB_EFBIG 27
#define GDB_ENOSPC 28
#define GDB_ESPIPE 29
#define GDB_EROFS 30
#define GDB_ENAMETOOLONG 91
#define GDB_EUNKNOWN 9999
/* lseek flags */
#define GDB_SEEK_SET 0
#define GDB_SEEK_CUR 1
#define GDB_SEEK_END 2
/* conversion functions */
extern gdb_mode_t __hosted_to_gdb_mode_t (mode_t m);
extern int32_t __hosted_to_gdb_open_flags (int f);
extern int32_t __hosted_to_gdb_lseek_flags (int f);
extern void __hosted_from_gdb_stat (const struct gdb_stat *gs,
struct stat *s);
extern void __hosted_from_gdb_timeval (const struct gdb_timeval *gt,
struct timeval *t);
extern int __hosted_from_gdb_errno (int32_t err);
extern int __hosted(int32_t operate, uint32_t *args);
#else
#ifdef IO
#define IO_NAME_(IO) __hosted_##IO
#define IO_NAME(IO) IO_NAME_(IO)
#define IO_STRING_(IO) #IO
#define IO_STRING(IO) IO_STRING_(IO)
/* Emit an object that causes a gnu linker warning. */
static const char IO_NAME (IO) []
__attribute__ ((section (".gnu.warning"), used)) =
"IO function '" IO_STRING (IO) "' used";
#endif
#endif

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/*
* kill.c
*
* Copyright (c) 2018 Mentor Graphics
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
/* Minimal implementation of kill for a target system without processes. */
extern void _exit (int);
int
kill (int pid, int sig)
{
if (pid == 1)
_exit (sig);
return 0;
}

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/* Copyright (c) 2020 C-SKY Microsystems 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 FreeBSD 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.
*/
#include <errno.h>
/*
+ * sbrk -- changes heap size size. Get nbytes more
+ * RAM. We just increment a pointer in what's
+ * left of memory on the board.
+ */
/* Provided by the linker script. */
extern char __heap_start[] __attribute__ ((aligned (8)));
extern char __heap_end[] __attribute__ ((aligned (8)));
void *
sbrk (int nbytes)
{
static char *heap = __heap_start;
char *base = heap;
char *new_heap = heap + nbytes;
if (nbytes < 0 || new_heap > __heap_end)
{
errno = ENOMEM;
return (void *)-1;
}
heap = new_heap;
return base;
}