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author | Marti Bolivar <mbolivar@leaflabs.com> | 2012-06-07 05:45:10 -0400 |
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committer | Marti Bolivar <mbolivar@leaflabs.com> | 2012-06-07 19:15:05 -0400 |
commit | 50cf479bc593bfcf68debac2812bcf7ce2862c52 (patch) | |
tree | d175a2d730b875f35262dc4b21f18a63fc87f151 /wirish | |
parent | 3e177c9e1a82ddceee27be7ed81ea64ea68845f2 (diff) | |
download | librambutan-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.mk | 1 | ||||
-rw-r--r-- | wirish/syscalls.c | 169 |
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; +} |