5 files changed, 28 insertions, 19 deletions
diff --git a/include/kernel/sys.h b/include/kernel/sys.h
index 2cefd09..e5275cf 100644
--- a/include/kernel/sys.h
+++ b/include/kernel/sys.h
@@ -9,8 +9,10 @@ extern int sys_alarm(void);
 extern int sys_pause(void);
 extern int sys_ctty(void);
 extern int sys_read(void);
+extern int sys_write(void);
 extern int sys_kill(void);
 extern int sys_dummy(void);
+extern int sys_panic(void);
 
 syscall_t call_table[256] = {
   [0] = &sys_puts,
@@ -22,9 +24,9 @@ syscall_t call_table[256] = {
   [6] = &sys_pause,
   [7] = &sys_ctty,
   [8] = &sys_read,
-  [9] = &sys_kill,
-  [10] = &sys_dummy,
-  [11] = &sys_dummy,
+  [9] = &sys_write,
+  [10] = &sys_kill,
+  [11] = &sys_panic,
   [12] = &sys_dummy,
   [13] = &sys_dummy,
   [14] = &sys_dummy,
diff --git a/include/kernel/tty.h b/include/kernel/tty.h
index b3f3012..7c0fc6e 100644
--- a/include/kernel/tty.h
+++ b/include/kernel/tty.h
@@ -15,11 +15,13 @@ struct tty_queue {
 
 struct tty_struct {
   void (*init) (void);
+  void (*write) (void);
   struct tty_queue rqueue;
   struct tty_queue wqueue;
 };
 
 ssize_t tty_read(unsigned, void*, size_t);
+ssize_t tty_write(unsigned, void*, size_t);
 
 void tty_init(void);
 
diff --git a/include/stdio.h b/include/stdio.h
index f94e783..5387db0 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -14,8 +14,9 @@ int sprintf(char*, char*, ...);
 
 int vsprintf(char*, char*, va_list);
 
-ssize_t read(void *buf, size_t len);
+ssize_t read(void*, size_t);
+ssize_t write(void*, size_t);
 
-int ctty(int ctty);
+int ctty(int);
 
 #endif
diff --git a/include/string.h b/include/string.h
index 72c2b2e..d2f738b 100644
--- a/include/string.h
+++ b/include/string.h
@@ -12,26 +12,26 @@
 typedef uint32_t size_t;
 #endif
 
-void* memchr(const void*, int, size_t);
+void *memchr(const void*, int, size_t);
 int memcmp(const void*, const void*, size_t);
-void* memcpy(void*, const void*, size_t);
-void* memmove(void*, const void*, size_t);
-void* memset(void*, int, size_t);
+void *memcpy(void*, const void*, size_t);
+void *memmove(void*, const void*, size_t);
+void *memset(void*, int, size_t);
 
 size_t strlen(const char*);
-char* strcat(char*, const char*);
-char* strncat(char*, const char*, size_t);
-char* strchr(const char*, int);
-char* strrchr(char*, int);
+char *strcat(char*, const char*);
+char *strncat(char*, const char*, size_t);
+char *strchr(const char*, int);
+char *strrchr(char*, int);
 int strcmp(const char*, const char*);
 int strncmp(const char*, const char*, size_t);
-char* strcpy(char*, const char*);
-char* strncpy(char*, const char*, size_t);
+char *strcpy(char*, const char*);
+char *strncpy(char*, const char*, size_t);
 size_t strcspn(const char*, const char*);
 size_t strspn(const char*, const char*);
-char* strpbrk(const char*, const char*);
-char* strstr(const char*, const char*);
-char* strtok(char*, const char*);
+char *strpbrk(const char*, const char*);
+char *strstr(const char*, const char*);
+char *strtok(char*, const char*);
 size_t strxfrm(char*, const char*, size_t);
 
 #endif
diff --git a/include/unistd.h b/include/unistd.h
index c337e57..a7e4f32 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -19,7 +19,9 @@ typedef int16_t pid_t;
 #define __SYS_pause     6
 #define __SYS_ctty      7
 #define __SYS_read      8
-#define __SYS_kill      9
+#define __SYS_write     9
+#define __SYS_kill      10
+#define __SYS_panic     11
 
 #define _syscall0(type, name) \
   type name(void) { \
@@ -59,4 +61,6 @@ void *getpdir(void);
 
 int pause(void);
 
+void panic(void);
+
 #endif