aboutsummaryrefslogtreecommitdiffstats
path: root/wirish
diff options
context:
space:
mode:
authorMarti Bolivar <mbolivar@leaflabs.com>2012-06-07 05:45:10 -0400
committerMarti Bolivar <mbolivar@leaflabs.com>2012-06-07 19:15:05 -0400
commit50cf479bc593bfcf68debac2812bcf7ce2862c52 (patch)
treed175a2d730b875f35262dc4b21f18a63fc87f151 /wirish
parent3e177c9e1a82ddceee27be7ed81ea64ea68845f2 (diff)
downloadlibrambutan-50cf479bc593bfcf68debac2812bcf7ce2862c52.tar.gz
librambutan-50cf479bc593bfcf68debac2812bcf7ce2862c52.zip
Move syscalls.c into Wirish.
libmaple takes orders, it doesn't give them. Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
Diffstat (limited to 'wirish')
-rw-r--r--wirish/rules.mk1
-rw-r--r--wirish/syscalls.c169
2 files changed, 170 insertions, 0 deletions
diff --git a/wirish/rules.mk b/wirish/rules.mk
index a198c2d..acf4c46 100644
--- a/wirish/rules.mk
+++ b/wirish/rules.mk
@@ -20,6 +20,7 @@ CFLAGS_$(d) := $(LIBMAPLE_INCLUDES) $(WIRISH_INCLUDES) -I$(d)
# Local rules and targets
sSRCS_$(d) := start.S
cSRCS_$(d) := start_c.c
+cSRCS_$(d) += syscalls.c
cppSRCS_$(d) := boards.cpp
cppSRCS_$(d) += cxxabi-compat.cpp
cppSRCS_$(d) += ext_interrupts.cpp
diff --git a/wirish/syscalls.c b/wirish/syscalls.c
new file mode 100644
index 0000000..d365e15
--- /dev/null
+++ b/wirish/syscalls.c
@@ -0,0 +1,169 @@
+/******************************************************************************
+ * The MIT License
+ *
+ * Copyright (c) 2010 Perry Hung.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *****************************************************************************/
+
+/**
+ * @file wirish/syscalls.c
+ * @brief newlib stubs
+ *
+ * Low level system routines used by newlib for basic I/O and memory
+ * allocation. You can override most of these.
+ */
+
+#include <libmaple/libmaple.h>
+
+#include <sys/stat.h>
+#include <errno.h>
+
+/* If CONFIG_HEAP_START (or CONFIG_HEAP_END) isn't defined, then
+ * assume _lm_heap_start (resp. _lm_heap_end) is appropriately set by
+ * the linker */
+#ifndef CONFIG_HEAP_START
+extern char _lm_heap_start;
+#define CONFIG_HEAP_START ((caddr_t)&_lm_heap_start)
+#endif
+#ifndef CONFIG_HEAP_END
+extern char _lm_heap_end;
+#define CONFIG_HEAP_END ((caddr_t)&_lm_heap_end)
+#endif
+
+/*
+ * _sbrk -- Increment the program break.
+ *
+ * Get incr bytes more RAM (for use by the heap). malloc() and
+ * friends call this function behind the scenes.
+ */
+caddr_t _sbrk(int incr) {
+ static caddr_t pbreak = NULL; /* current program break */
+ caddr_t ret;
+
+ if (pbreak == NULL) {
+ pbreak = CONFIG_HEAP_START;
+ }
+
+ if ((CONFIG_HEAP_END - pbreak < incr) ||
+ (pbreak - CONFIG_HEAP_START < -incr)) {
+ errno = ENOMEM;
+ return (caddr_t)-1;
+ }
+
+ ret = pbreak;
+ pbreak += incr;
+ return ret;
+}
+
+int _open(const char *path, int flags, ...) {
+ return 1;
+}
+
+int _close(int fd) {
+ return 0;
+}
+
+int _fstat(int fd, struct stat *st) {
+ st->st_mode = S_IFCHR;
+ return 0;
+}
+
+int _isatty(int fd) {
+ return 1;
+}
+
+int isatty(int fd) {
+ return 1;
+}
+
+int _lseek(int fd, off_t pos, int whence) {
+ return -1;
+}
+
+unsigned char getch(void) {
+ return 0;
+}
+
+
+int _read(int fd, char *buf, size_t cnt) {
+ *buf = getch();
+
+ return 1;
+}
+
+void putch(unsigned char c) {
+}
+
+void cgets(char *s, int bufsize) {
+ char *p;
+ int c;
+ int i;
+
+ for (i = 0; i < bufsize; i++) {
+ *(s+i) = 0;
+ }
+// memset(s, 0, bufsize);
+
+ p = s;
+
+ for (p = s; p < s + bufsize-1;) {
+ c = getch();
+ switch (c) {
+ case '\r' :
+ case '\n' :
+ putch('\r');
+ putch('\n');
+ *p = '\n';
+ return;
+
+ case '\b' :
+ if (p > s) {
+ *p-- = 0;
+ putch('\b');
+ putch(' ');
+ putch('\b');
+ }
+ break;
+
+ default :
+ putch(c);
+ *p++ = c;
+ break;
+ }
+ }
+ return;
+}
+
+int _write(int fd, const char *buf, size_t cnt) {
+ int i;
+
+ for (i = 0; i < cnt; i++)
+ putch(buf[i]);
+
+ return cnt;
+}
+
+/* Override fgets() in newlib with a version that does line editing */
+char *fgets(char *s, int bufsize, void *f) {
+ cgets(s, bufsize);
+ return s;
+}