diff options
Diffstat (limited to 'libgloss/tic6x/syscalls.c')
| -rw-r--r-- | libgloss/tic6x/syscalls.c | 382 |
1 files changed, 0 insertions, 382 deletions
diff --git a/libgloss/tic6x/syscalls.c b/libgloss/tic6x/syscalls.c deleted file mode 100644 index 393fba661..000000000 --- a/libgloss/tic6x/syscalls.c +++ /dev/null @@ -1,382 +0,0 @@ -/* Copyright (c) 2010 CodeSourcery, Inc. - All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions are met: - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - * Neither the name of CodeSourcery nor the - names of its contributors may be used to endorse or promote products - derived from this software without specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY CODESOURCERY, INC. ``AS IS'' AND ANY - EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CODESOURCERY BE LIABLE - FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT - OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 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. */ - -#include <stdio.h> -#include <string.h> -#include <time.h> -#include <sys/time.h> -#include <sys/stat.h> -#include <errno.h> - -#define _DTOPEN 0xf0 -#define _DTCLOSE 0xf1 -#define _DTREAD 0xf2 -#define _DTWRITE 0xf3 -#define _DTLSEEK 0xf4 -#define _DTUNLINK 0xf5 -#define _DTGETENV 0xf6 -#define _DTRENAME 0xf7 -#define _DTGETTIME 0xf8 -#define _DTGETCLK 0xf9 -#define _DTSYNC 0xff - -#define CIOBUFSIZ (BUFSIZ + 32) - -struct __attribute__((packed)) cio_open_to_host -{ - /* Suggested file descriptor (little endian). */ - short fd; - /* Flags (little endian). */ - short flags; -}; - -struct __attribute__((packed)) cio_open_from_host -{ - /* File descriptor (little endian). */ - short fd; -}; - -struct __attribute__((packed)) cio_close_to_host -{ - /* File descriptor (little endian). */ - short fd; -}; - -struct __attribute__((packed)) cio_close_from_host -{ - /* Result (little endian). */ - short result; -}; - -struct __attribute__((packed)) cio_read_to_host -{ - /* File descriptor (little endian). */ - short fd; - /* Length (little endian). */ - short length; -}; - -struct __attribute__((packed)) cio_read_from_host -{ - /* Result (little endian). */ - short result; -}; - -struct __attribute__((packed)) cio_write_to_host -{ - /* File descriptor (little endian). */ - short fd; - /* Length (little endian). */ - short length; -}; - -struct __attribute__((packed)) cio_write_from_host -{ - /* Result (little endian). */ - short result; -}; - -struct __attribute__((packed)) cio_lseek_to_host -{ - /* File descriptor (little endian). */ - short fd; - /* Offset (little endian). */ - int offset; - /* Whence (little endian). */ - short whence; -}; - -struct __attribute__((packed)) cio_lseek_from_host -{ - /* Result (little endian). */ - int result; -}; - -struct __attribute__((packed)) cio_unlink_to_host -{ - /* Empty. */ -}; - -struct __attribute__((packed)) cio_unlink_from_host -{ - /* Result (little endian). */ - short result; -}; - -struct __attribute__((packed)) cio_rename_to_host -{ - /* Empty. */ -}; - -struct __attribute__((packed)) cio_rename_from_host -{ - /* Result (little endian). */ - short result; -}; - -struct __attribute__((packed)) cio_gettime_to_host -{ - /* Empty. */ -}; - -struct __attribute__((packed)) cio_gettime_from_host -{ - /* Time (little endian). */ - int time; -}; - -struct __attribute__((packed)) cio_getclk_to_host -{ - /* Empty. */ -}; - -struct __attribute__((packed)) cio_getclk_from_host -{ - /* Clock cycles (little endian). */ - int result; -}; - -struct __attribute__((packed)) cio_to_host -{ - /* Data length (target endian). */ - unsigned int length; - /* Command. */ - unsigned char command; - /* Parameters. */ - union - { - unsigned char buf[8]; - struct cio_open_to_host open; - struct cio_close_to_host close; - struct cio_read_to_host read; - struct cio_write_to_host write; - struct cio_lseek_to_host lseek; - struct cio_unlink_to_host unlink; - struct cio_rename_to_host rename; - struct cio_gettime_to_host gettime; - struct cio_getclk_to_host getclk; - } parms; - /* Variable-length data. */ - unsigned char data[]; -}; - -struct __attribute__((packed)) cio_from_host -{ - /* Length (target endian). */ - unsigned int length; - /* Parameters. */ - union - { - unsigned char buf[8]; - struct cio_open_from_host open; - struct cio_close_from_host close; - struct cio_read_from_host read; - struct cio_write_from_host write; - struct cio_lseek_from_host lseek; - struct cio_unlink_from_host unlink; - struct cio_rename_from_host rename; - struct cio_gettime_from_host gettime; - struct cio_getclk_from_host getclk; - } parms; - /* Data. */ - unsigned char data[]; -}; - -union -{ - unsigned char buf[CIOBUFSIZ]; - int align; - union - { - struct cio_to_host to_host; - struct cio_from_host from_host; - } u; -} _CIOBUF_ __attribute__((section(".cio"))); - -#ifdef _BIG_ENDIAN -#define SWAPSHORT(s) ((short)((((s) & 0xff) << 8) | (((s) & 0xff00) >> 8))) -#define SWAPINT(i) (__builtin_bswap32 (i)) -#else -#define SWAPSHORT(s) (s) -#define SWAPINT(i) (i) -#endif - -static void __attribute__((noinline)) -do_semi_call (void) -{ - asm volatile (".globl C$$IO$$\nnop\nC$$IO$$:nop" : "+m" (_CIOBUF_)); -} - -static inline void -semi_call_wrapper (unsigned char command, const char *data, - unsigned int length) -{ - _CIOBUF_.u.to_host.length = length; - _CIOBUF_.u.to_host.command = command; - if (data != NULL) - memcpy (_CIOBUF_.u.to_host.data, data, length); - do_semi_call (); -} - -static inline void -semi_call_wrapper2 (unsigned char command, const char *data1, - unsigned int length1, const char *data2, - unsigned int length2) -{ - _CIOBUF_.u.to_host.length = length1 + length2; - _CIOBUF_.u.to_host.command = command; - if (data1 != NULL) - memcpy (_CIOBUF_.u.to_host.data, data1, length1); - if (data2 != NULL) - memcpy (_CIOBUF_.u.to_host.data + length1, data2, length2); - do_semi_call (); -} - -void -_exit (int status) -{ - /* The semihosting interface appears to provide no way to return an - exit status. */ - asm volatile (".globl C$$EXIT\nnop\nC$$EXIT:nop"); -} - -int -open (const char *path, int flags, ...) -{ - /* ??? It's not clear what the suggested fd is for. */ - static short suggest_fd = 3; - short ret_fd; - ++suggest_fd; - _CIOBUF_.u.to_host.parms.open.fd = SWAPSHORT (suggest_fd); - _CIOBUF_.u.to_host.parms.open.flags = SWAPSHORT (flags); - semi_call_wrapper (_DTOPEN, path, strlen (path) + 1); - ret_fd = SWAPSHORT (_CIOBUF_.u.from_host.parms.open.fd); - if (ret_fd == -1) - return -1; - return suggest_fd; -} - -int -close (int fd) -{ - _CIOBUF_.u.to_host.parms.close.fd = SWAPSHORT (fd); - semi_call_wrapper (_DTCLOSE, NULL, 0); - return SWAPSHORT (_CIOBUF_.u.from_host.parms.close.result); -} - -int -read (int fd, char *ptr, int len) -{ - if (len > BUFSIZ) - len = BUFSIZ; - _CIOBUF_.u.to_host.parms.read.fd = SWAPSHORT (fd); - _CIOBUF_.u.to_host.parms.read.length = SWAPSHORT (len); - semi_call_wrapper (_DTREAD, NULL, 0); - memcpy (ptr, _CIOBUF_.u.from_host.data, _CIOBUF_.u.from_host.length); - return SWAPSHORT (_CIOBUF_.u.from_host.parms.read.result); -} - -int -write (int fd, char *ptr, int len) -{ - if (len > BUFSIZ) - len = BUFSIZ; - _CIOBUF_.u.to_host.parms.write.fd = SWAPSHORT (fd); - _CIOBUF_.u.to_host.parms.write.length = SWAPSHORT (len); - semi_call_wrapper (_DTWRITE, ptr, len); - return SWAPSHORT (_CIOBUF_.u.from_host.parms.write.result); -} - -int -lseek (int fd, int offset, int whence) -{ - _CIOBUF_.u.to_host.parms.lseek.fd = SWAPSHORT (fd); - _CIOBUF_.u.to_host.parms.lseek.offset = SWAPINT (offset); - _CIOBUF_.u.to_host.parms.lseek.whence = SWAPSHORT (whence); - semi_call_wrapper (_DTLSEEK, NULL, 0); - return SWAPINT (_CIOBUF_.u.from_host.parms.lseek.result); -} - -int -unlink (const char *path) -{ - semi_call_wrapper (_DTUNLINK, path, strlen (path) + 1); - return SWAPSHORT (_CIOBUF_.u.from_host.parms.unlink.result); -} - -int -rename (const char *oldpath, const char *newpath) -{ - semi_call_wrapper2 (_DTRENAME, oldpath, strlen (oldpath) + 1, - newpath, strlen (newpath) + 1); - return SWAPSHORT (_CIOBUF_.u.from_host.parms.rename.result); -} - -int -gettimeofday (struct timeval *tp, void *tzvp) -{ - struct timezone *tzp = tzvp; - - if (tp) - { - semi_call_wrapper (_DTGETTIME, NULL, 0); - tp->tv_sec = SWAPINT (_CIOBUF_.u.from_host.parms.gettime.time); - tp->tv_usec = 0; - } - - if (tzp) - { - tzp->tz_minuteswest = 0; - tzp->tz_dsttime = 0; - } - - return 0; -} - -clock_t -clock (void) -{ - semi_call_wrapper (_DTGETCLK, NULL, 0); - return SWAPINT (_CIOBUF_.u.from_host.parms.getclk.result); -} - - -int -isatty (int file __attribute__((unused))) -{ - errno = ENOSYS; - return 0; -} - -int -fstat (int fd, struct stat *buf) -{ - buf->st_mode = S_IFCHR; /* Always pretend to be a tty */ - buf->st_blksize = 0; - - return (0); -} |