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Split newlib syscall support to its own file (#141)

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Earle F. Philhower, III 2021-05-16 03:59:32 -07:00 committed by GitHub
parent 1de1d04fb4
commit f1f62264fe
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 155 additions and 139 deletions
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139
cores/rp2040/main.cpp
View file

@ -20,7 +20,6 @@
#include <Arduino.h>
#include "RP2040USB.h"
#include <pico/stdlib.h>
#include <pico/multicore.h>
RP2040 rp2040;
@ -94,141 +93,3 @@ extern "C" int main() {
}
return 0;
}
/* NEWLIB syscall overloads, so we can ::print() and ::getc() using our objects */
/* Placed here to ensure this compilation unit will be present when it's time */
/* to link newlib.a. */
#include <stdint.h>
#include <errno.h>
#include <_syslist.h>
#include <sys/times.h>
#undef errno
// TODO - check the fd, create a VFS, etc.
extern "C" int errno;
extern "C" ssize_t _write(int fd, const void *buf, size_t count) {
#if defined DEBUG_RP2040_PORT
return DEBUG_RP2040_PORT.write((const char *)buf, count);
#else
return 0;
#endif
}
extern "C" int _chown (const char *path, uid_t owner, gid_t group) {
errno = ENOSYS;
return -1;
}
extern "C" int _close (int fildes) {
errno = ENOSYS;
return -1;
}
extern "C" int _execve (char *name, char **argv, char **env) {
errno = ENOSYS;
return -1;
}
extern "C" int _fork (void) {
errno = ENOSYS;
return -1;
}
extern "C" int _fstat (int fildes, struct stat *st) {
errno = ENOSYS;
return -1;
}
extern "C" int _getpid (void) {
errno = ENOSYS;
return -1;
}
static int64_t __timedelta_us = 0.0;
extern "C" int _gettimeofday (struct timeval *tv, void *tz) {
uint64_t now_us = to_us_since_boot(get_absolute_time()) + __timedelta_us;
if (tv) {
tv->tv_sec = now_us / 1000000L;
tv->tv_usec = now_us % 1000000L;
}
return 0;
}
extern "C" int settimeofday (const struct timeval *tv, const struct timezone *tz) {
uint64_t now_us = to_us_since_boot(get_absolute_time());
if (tv) {
uint64_t newnow_us;
newnow_us = tv->tv_sec * 1000000L;
newnow_us += tv->tv_usec;
__timedelta_us = newnow_us - now_us;
}
return 0;
}
extern "C" int _isatty (int file) {
errno = ENOSYS;
return 0;
}
extern "C" int _kill (int pid, int sig) {
errno = ENOSYS;
return -1;
}
extern "C" int _link (char *existing, char *newlink) {
errno = ENOSYS;
return -1;
}
extern "C" int _lseek (int file, int ptr, int dir) {
errno = ENOSYS;
return -1;
}
extern "C" int _open (char *file, int flags, int mode) {
errno = ENOSYS;
return -1;
}
extern "C" int _read (int file, char *ptr, int len)
{
// return Serial.read(ptr, len);
return -1;
}
extern "C" int _readlink (const char *path, char *buf, size_t bufsize) {
errno = ENOSYS;
return -1;
}
extern "C" int _stat (const char *file, struct stat *st) {
errno = ENOSYS;
return -1;
}
extern "C" int _symlink (const char *path1, const char *path2) {
errno = ENOSYS;
return -1;
}
extern "C" clock_t _times (struct tms *buf) {
errno = ENOSYS;
return -1;
}
extern "C" int _unlink (char *name) {
errno = ENOSYS;
return -1;
}
extern "C" int _wait (int *status) {
errno = ENOSYS;
return -1;
}

155
cores/rp2040/posix.cpp Normal file
View file

@ -0,0 +1,155 @@
/*
* NEWLIB syscall implementations
*
* Copyright (c) 2021 Earle F. Philhower, III <earlephilhower@yahoo.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <Arduino.h>
#include <stdint.h>
#include <errno.h>
#include <_syslist.h>
#include <sys/times.h>
#include <pico/stdlib.h>
#include <pico/multicore.h>
#undef errno
// TODO - check the fd, create a VFS, etc.
extern "C" int errno;
extern "C" ssize_t _write(int fd, const void *buf, size_t count) {
#if defined DEBUG_RP2040_PORT
return DEBUG_RP2040_PORT.write((const char *)buf, count);
#else
return 0;
#endif
}
extern "C" int _chown (const char *path, uid_t owner, gid_t group) {
errno = ENOSYS;
return -1;
}
extern "C" int _close (int fildes) {
errno = ENOSYS;
return -1;
}
extern "C" int _execve (char *name, char **argv, char **env) {
errno = ENOSYS;
return -1;
}
extern "C" int _fork (void) {
errno = ENOSYS;
return -1;
}
extern "C" int _fstat (int fildes, struct stat *st) {
errno = ENOSYS;
return -1;
}
extern "C" int _getpid (void) {
errno = ENOSYS;
return -1;
}
static int64_t __timedelta_us = 0.0;
extern "C" int _gettimeofday (struct timeval *tv, void *tz) {
uint64_t now_us = to_us_since_boot(get_absolute_time()) + __timedelta_us;
if (tv) {
tv->tv_sec = now_us / 1000000L;
tv->tv_usec = now_us % 1000000L;
}
return 0;
}
extern "C" int settimeofday (const struct timeval *tv, const struct timezone *tz) {
uint64_t now_us = to_us_since_boot(get_absolute_time());
if (tv) {
uint64_t newnow_us;
newnow_us = tv->tv_sec * 1000000L;
newnow_us += tv->tv_usec;
__timedelta_us = newnow_us - now_us;
}
return 0;
}
extern "C" int _isatty (int file) {
errno = ENOSYS;
return 0;
}
extern "C" int _kill (int pid, int sig) {
errno = ENOSYS;
return -1;
}
extern "C" int _link (char *existing, char *newlink) {
errno = ENOSYS;
return -1;
}
extern "C" int _lseek (int file, int ptr, int dir) {
errno = ENOSYS;
return -1;
}
extern "C" int _open (char *file, int flags, int mode) {
errno = ENOSYS;
return -1;
}
extern "C" int _read (int file, char *ptr, int len)
{
// return Serial.read(ptr, len);
return -1;
}
extern "C" int _readlink (const char *path, char *buf, size_t bufsize) {
errno = ENOSYS;
return -1;
}
extern "C" int _stat (const char *file, struct stat *st) {
errno = ENOSYS;
return -1;
}
extern "C" int _symlink (const char *path1, const char *path2) {
errno = ENOSYS;
return -1;
}
extern "C" clock_t _times (struct tms *buf) {
errno = ENOSYS;
return -1;
}
extern "C" int _unlink (char *name) {
errno = ENOSYS;
return -1;
}
extern "C" int _wait (int *status) {
errno = ENOSYS;
return -1;
}