From 48026bb824fd2d9cfb00ecd040db6ef3a416bae9 Mon Sep 17 00:00:00 2001
From: Clyne Sullivan <clyne@bitgloo.com>
Date: Fri, 22 Jan 2021 21:43:36 -0500
Subject: upload initial port

---
 ChibiOS_20.3.2/os/sb/various/syscalls.c | 142 ++++++++++++++++++++++++++++++++
 1 file changed, 142 insertions(+)
 create mode 100644 ChibiOS_20.3.2/os/sb/various/syscalls.c

(limited to 'ChibiOS_20.3.2/os/sb/various/syscalls.c')

diff --git a/ChibiOS_20.3.2/os/sb/various/syscalls.c b/ChibiOS_20.3.2/os/sb/various/syscalls.c
new file mode 100644
index 0000000..4d3ae0f
--- /dev/null
+++ b/ChibiOS_20.3.2/os/sb/various/syscalls.c
@@ -0,0 +1,142 @@
+/*
+    ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "sbuser.h"
+
+#define MAKERR(e) (-(int)(e))
+
+__attribute__((used))
+int _close_r(struct _reent *r, int file) {
+  uint32_t err;
+
+  err = sbFileClose((uint32_t)file);
+  if (SB_ERR_ISERROR(err)) {
+    __errno_r(r) = MAKERR(err);
+    return -1;
+  }
+
+  return 0;
+}
+
+__attribute__((used))
+int _write_r(struct _reent *r, int file, char * ptr, int len) {
+  uint32_t err;
+
+  err = sbFileWrite((uint32_t)file, (const uint8_t *)ptr, (size_t)len);
+  if (SB_ERR_ISERROR(err)) {
+    __errno_r(r) = MAKERR(err);
+    return -1;
+  }
+
+  return (int)err;
+}
+
+__attribute__((used))
+int _read_r(struct _reent *r, int file, char * ptr, int len) {
+  uint32_t err;
+
+  err = sbFileRead((uint32_t)file, (uint8_t *)ptr, (size_t)len);
+  if (SB_ERR_ISERROR(err)) {
+    __errno_r(r) = MAKERR(err);
+    return -1;
+  }
+
+  return (int)err;
+}
+
+__attribute__((used))
+int _lseek_r(struct _reent *r, int file, int ptr, int dir) {
+  uint32_t err;
+
+  err = sbFileSeek((uint32_t)file, (uint32_t)ptr, (uint32_t)dir);
+  if (SB_ERR_ISERROR(err)) {
+    __errno_r(r) = MAKERR(err);
+    return -1;
+  }
+
+  return (int)err;
+}
+
+__attribute__((used))
+int _fstat_r(struct _reent *r, int file, struct stat * st) {
+  (void)r;
+  (void)file;
+
+  memset(st, 0, sizeof(*st));
+  st->st_mode = S_IFCHR;
+  return 0;
+}
+
+__attribute__((used))
+int _isatty_r(struct _reent *r, int fd) {
+  (void)r;
+  (void)fd;
+
+  return 1;
+}
+
+__attribute__((used))
+caddr_t _sbrk_r(struct _reent *r, int incr) {
+  extern uint8_t __heap_end__, __heap_base__;
+  static uint8_t *p = &__heap_base__;
+  uint8_t *prevp;
+
+  prevp = p;
+  if ((p + incr > &__heap_end__) ||
+      (p + incr < &__heap_base__)) {
+    __errno_r(r)  = ENOMEM;
+    return (caddr_t)-1;
+  }
+
+  p += incr;
+  return (caddr_t)prevp;
+}
+
+__attribute__((used))
+int _getpid_r(struct _reent *r) {
+
+  (void)r;
+
+  return 1;
+}
+
+__attribute__((used))
+int _kill_r(struct _reent *r, int pid, int sig) {
+
+  (void)pid;
+  (void)sig;
+
+  __errno_r(r) = EINVAL;
+  return -1;
+}
+
+__attribute__((used))
+void _exit(int code) {
+
+  sbExit((msg_t)code);
+  while (true);
+}
+
+/*** EOF ***/
-- 
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