Make way for libc implementation

19 files changed, 299 insertions, 211 deletions

diff --git a/src/lib/include/assert.h b/src/lib/include/assert.h
index af02bb5..655d6f6 100644
--- a/src/lib/include/assert.h
+++ b/src/lib/include/assert.h
@@ -1,6 +1,5 @@
 #pragma once
 
-// TODO
-
+#include <kogata/debug.h>
 
 /* vim: set sts=0 ts=4 sw=4 tw=0 noet :*/
diff --git a/src/lib/include/kogata/syscall.h b/src/lib/include/kogata/syscall.h
index 378dda2..8ae5325 100644
--- a/src/lib/include/kogata/syscall.h
+++ b/src/lib/include/kogata/syscall.h
@@ -13,51 +13,51 @@
 
 typedef void (*entry_t)(void*);
 
-void dbg_print(const char* str);
-void yield();
-void exit(int code);
-void usleep(int usecs);
-bool sys_new_thread(void* eip, void* esp);
-void exit_thread();
-
-bool mmap(void* addr, size_t size, int mode);
-bool mmap_file(fd_t file, size_t offset, void* addr, size_t size, int mode);
-bool mchmap(void* addr, int mode);
-bool munmap(void* addr);
-
-bool create(const char* name, int type);
-bool delete(const char* name);
-bool move(const char* oldname, const char* newname);
-bool stat(const char* name, stat_t *s);
-
-fd_t open(const char* name, int mode);
-void close(fd_t file);
-size_t read(fd_t file, size_t offset, size_t len, char *buf);
-size_t write(fd_t file, size_t offset, size_t len, const char* buf);
-bool readdir(fd_t file, size_t ent_no, dirent_t *d);
-bool stat_open(fd_t file, stat_t *s);
-int ioctl(fd_t file, int command, void* data);
-int fctl(fd_t file, int command, void* data);
-bool select(sel_fd_t* fds, size_t nfds, int timeout);
-
-fd_pair_t make_channel(bool blocking);
-fd_t make_shm(size_t size);
-bool gen_token(fd_t file, token_t *tok);
-fd_t use_token(token_t *tok);
-
-bool make_fs(const char* name, const char* driver, fd_t source, const char* options);
-bool fs_add_source(const char* fs, fd_t source, const char* options);
-bool fs_subfs(const char* name, const char* orig_fs, const char* root, int ok_modes);
-void fs_remove(const char* name);
-
-pid_t new_proc();
-bool bind_fs(pid_t pid, const char* new_name, const char* fs);
-bool bind_subfs(pid_t pid, const char* new_name, const char* fs, const char* root, int ok_modes);
-bool bind_make_fs(pid_t pid, const char* name, const char* driver, fd_t source, const char* options);
-bool bind_fd(pid_t pid, fd_t new_fd, fd_t fd);
-bool proc_exec(pid_t pid, const char* file);
-bool proc_status(pid_t pid, proc_status_t *s);
-bool proc_kill(pid_t pid, proc_status_t *s);
-void proc_wait(pid_t pid, bool wait, proc_status_t *s);
+void sc_dbg_print(const char* str);
+void sc_yield();
+void sc_exit(int code);
+void sc_usleep(int usecs);
+bool sc_sys_new_thread(void* eip, void* esp);
+void sc_exit_thread();
+
+bool sc_mmap(void* addr, size_t size, int mode);
+bool sc_mmap_file(fd_t file, size_t offset, void* addr, size_t size, int mode);
+bool sc_mchmap(void* addr, int mode);
+bool sc_munmap(void* addr);
+
+bool sc_create(const char* name, int type);
+bool sc_delete(const char* name);
+bool sc_move(const char* oldname, const char* newname);
+bool sc_stat(const char* name, stat_t *s);
+
+fd_t sc_open(const char* name, int mode);
+void sc_close(fd_t file);
+size_t sc_read(fd_t file, size_t offset, size_t len, char *buf);
+size_t sc_write(fd_t file, size_t offset, size_t len, const char* buf);
+bool sc_readdir(fd_t file, size_t ent_no, dirent_t *d);
+bool sc_stat_open(fd_t file, stat_t *s);
+int sc_ioctl(fd_t file, int command, void* data);
+int sc_fctl(fd_t file, int command, void* data);
+bool sc_select(sel_fd_t* fds, size_t nfds, int timeout);
+
+fd_pair_t sc_make_channel(bool blocking);
+fd_t sc_make_shm(size_t size);
+bool sc_gen_token(fd_t file, token_t *tok);
+fd_t sc_use_token(token_t *tok);
+
+bool sc_make_fs(const char* name, const char* driver, fd_t source, const char* options);
+bool sc_fs_add_source(const char* fs, fd_t source, const char* options);
+bool sc_fs_subfs(const char* name, const char* orig_fs, const char* root, int ok_modes);
+void sc_fs_remove(const char* name);
+
+pid_t sc_new_proc();
+bool sc_bind_fs(pid_t pid, const char* new_name, const char* fs);
+bool sc_bind_subfs(pid_t pid, const char* new_name, const char* fs, const char* root, int ok_modes);
+bool sc_bind_make_fs(pid_t pid, const char* name, const char* driver, fd_t source, const char* options);
+bool sc_bind_fd(pid_t pid, fd_t new_fd, fd_t fd);
+bool sc_proc_exec(pid_t pid, const char* file);
+bool sc_proc_status(pid_t pid, proc_status_t *s);
+bool sc_proc_kill(pid_t pid, proc_status_t *s);
+void sc_proc_wait(pid_t pid, bool wait, proc_status_t *s);
 
 /* vim: set ts=4 sw=4 tw=0 noet :*/
diff --git a/src/lib/include/readline/history.h b/src/lib/include/readline/history.h
new file mode 100644
index 0000000..3b98ca2
--- /dev/null
+++ b/src/lib/include/readline/history.h
@@ -0,0 +1,5 @@
+#pragma once
+
+#include "readline.h"
+
+/* vim: set sts=0 ts=4 sw=4 tw=0 noet :*/
diff --git a/src/lib/include/readline/readline.h b/src/lib/include/readline/readline.h
new file mode 100644
index 0000000..ae3e05c
--- /dev/null
+++ b/src/lib/include/readline/readline.h
@@ -0,0 +1,6 @@
+#pragma once
+
+char* readline(const char* prompt);
+void add_history(const char* line);
+
+/* vim: set sts=0 ts=4 sw=4 tw=0 noet :*/
diff --git a/src/lib/include/setjmp.h b/src/lib/include/setjmp.h
index 42df49e..46c3b5d 100644
--- a/src/lib/include/setjmp.h
+++ b/src/lib/include/setjmp.h
@@ -1,6 +1,6 @@
 #pragma once
 
-// TODO
+#include <stdint.h>
 
 struct _jmp_buf {
 	uint32_t stuff[10];	// 40 bytes
diff --git a/src/lib/include/stdio.h b/src/lib/include/stdio.h
index 3914a89..c6b636d 100644
--- a/src/lib/include/stdio.h
+++ b/src/lib/include/stdio.h
@@ -2,17 +2,16 @@
 
 #include <stdarg.h>
 
-#include <kogata/syscall.h>
+#include <kogata/printf.h>
 
-extern fd_t stdio;
+#include <kogata/syscall.h>
 
-// CUSTOM!
-void getline(char* buf, size_t l);
+void setup_libc_stdio();
 
 
 //TODO below
 struct file_t {
-	fd_t fd;
+	// TODO
 };
 typedef struct file_t FILE;
 
@@ -78,12 +77,10 @@ int rename(const char *old, const char *new);
 int remove(const char *pathname);
 
 
-
 int printf(const char *format, ...);
 int fprintf(FILE *stream, const char *format, ...);
 int dprintf(int fd, const char *format, ...);
 int sprintf(char *str, const char *format, ...);
-int snprintf(char *str, size_t size, const char *format, ...);
 
 
 /* vim: set ts=4 sw=4 tw=0 noet :*/
diff --git a/src/lib/include/stdlib.h b/src/lib/include/stdlib.h
index 53aef80..e451c52 100644
--- a/src/lib/include/stdlib.h
+++ b/src/lib/include/stdlib.h
@@ -1,10 +1,13 @@
 #pragma once
 
 #include <kogata/malloc.h>
+#include <kogata/syscall.h>
 
 #define EXIT_SUCCESS 0
 #define EXIT_FAILURE 255
 
+#define exit sc_exit
+
 int rand(void);
 //int rand_r(unsigned int *seedp);
 void srand(unsigned int seed);
@@ -14,8 +17,8 @@ void srand(unsigned int seed);
 void abort() __attribute__((__noreturn__));
 
 
-double strtod(const char *nptr, const char **endptr);
-float strtof(const char *nptr, const char **endptr);
+double strtod(const char *nptr, char **endptr);
+float strtof(const char *nptr, char **endptr);
 
 char *getenv(const char *name);
 
diff --git a/src/lib/libc/debug.c b/src/lib/libc/debug.c
index dc04fd3..f862fe6 100644
--- a/src/lib/libc/debug.c
+++ b/src/lib/libc/debug.c
@@ -1,7 +1,9 @@
 #include <stdbool.h>
+#include <stdlib.h>
 
-#include <kogata/debug.h>
 #include <kogata/syscall.h>
+#include <kogata/debug.h>
+#include <kogata/printf.h>
 
 void sys_panic(const char* msg, const char* file, int line) {
 	dbg_printf("PANIC in user process\n  %s\n  at %s:%d\n", msg, file, line);
@@ -15,4 +17,23 @@ void sys_panic_assert(const char* assert, const char* file, int line) {
 	while(true);
 }
 
+void dbg_print(const char* s) {
+	sc_dbg_print(s);
+}
+
+void dbg_printf(const char* fmt, ...) {
+	va_list ap;
+	char buffer[256];
+
+	va_start(ap, fmt);
+	vsnprintf(buffer, 256, fmt, ap);
+	va_end(ap);
+
+	dbg_print(buffer);
+}
+
+void yield() {
+	sc_yield();
+}
+
 /* vim: set ts=4 sw=4 tw=0 noet :*/
diff --git a/src/lib/libc/malloc.c b/src/lib/libc/malloc.c
index 2d43656..473404b 100644
--- a/src/lib/libc/malloc.c
+++ b/src/lib/libc/malloc.c
@@ -10,7 +10,7 @@ static void* heap_alloc_pages(size_t s) {
 	void* addr = region_alloc(s, "Heap");
 	if (addr == 0) return 0;
 
-	bool map_ok = mmap(addr, s, FM_READ | FM_WRITE);
+	bool map_ok = sc_mmap(addr, s, FM_READ | FM_WRITE);
 	if (!map_ok) {
 		region_free(addr);
 		return 0;
@@ -20,7 +20,7 @@ static void* heap_alloc_pages(size_t s) {
 }
 
 static void heap_free_pages(void* addr) {
-	munmap(addr);
+	sc_munmap(addr);
 	region_free(addr);
 }
 
@@ -40,7 +40,7 @@ static slab_type_t slab_sizes[] = {
 };
 
 bool mmap_single_page(void* addr) {
-	return mmap(addr, PAGE_SIZE, MM_READ | MM_WRITE);
+	return sc_mmap(addr, PAGE_SIZE, MM_READ | MM_WRITE);
 }
 
 void malloc_setup() {
diff --git a/src/lib/libc/readline.c b/src/lib/libc/readline.c
new file mode 100644
index 0000000..20c2007
--- /dev/null
+++ b/src/lib/libc/readline.c
@@ -0,0 +1,49 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <readline/readline.h>
+
+// ** READLINE
+
+#define READLINE_MAX_LEN 256
+
+typedef struct _rdln_hist {
+	int max;
+	int n;
+	char **str;
+} readline_history;
+
+readline_history stdio_history = {0, 0, 0};
+
+
+char *readline(const char* prompt) {
+	// readline_history *h = &stdio_history;
+
+	puts(prompt);
+
+	char* buf = malloc(READLINE_MAX_LEN);
+	if (buf == NULL) return NULL;
+
+	char* ret = fgets(buf, READLINE_MAX_LEN, stdin);
+	if (ret == NULL) {
+		free(buf);
+		return NULL;
+	}
+
+	int n = strlen(ret);
+	if (n > 0 && ret[n-1] == '\n') ret[n-1] = 0;
+
+	// TODO
+
+	return ret;
+}
+
+void add_history(const char* line) {
+	// readline_history *h = &stdio_history;
+
+	// TODO
+}
+
+
+/* vim: set sts=0 ts=4 sw=4 tw=0 noet :*/
diff --git a/src/lib/libc/start.c b/src/lib/libc/start.c
index 49a6ca1..185d90f 100644
--- a/src/lib/libc/start.c
+++ b/src/lib/libc/start.c
@@ -1,17 +1,21 @@
 #include <kogata/syscall.h>
 
+#include <stdio.h>
+
 void malloc_setup();
 
 int main(int, char**);
 
-void __libkogata_start() {
+void __libc_start() {
 	malloc_setup();
 
-	// TODO : more setup ?
+	setup_libc_stdio();
+
+	// TODO : more setup ? yes, for args, for env...
 
 	int ret = main(0, 0);
 
-	exit(ret);
+	sc_exit(ret);
 }
 
 /* vim: set ts=4 sw=4 tw=0 noet :*/
diff --git a/src/lib/libc/stdio.c b/src/lib/libc/stdio.c
index bd6c35b..8d4577e 100644
--- a/src/lib/libc/stdio.c
+++ b/src/lib/libc/stdio.c
@@ -1,52 +1,38 @@
 #include <string.h>
 #include <stdio.h>
 
+#include <proto/launch.h>
+
 #include <kogata/syscall.h>
 #include <kogata/printf.h>
 
+FILE *stdin = 0;
+FILE *stdout = 0;
+FILE *stderr = 0;
 
-fd_t stdio = 1;
+void setup_libc_stdio() {
+	fd_t tty_io = STD_FD_TTY_STDIO;
+	// fd_t tty_in = STD_FD_STDIN;
+	// fd_t tty_out = STD_FD_STDOUT;
+	// fd_t tty_err = STD_FD_STDERR;
 
-int getchar() {
-	char chr;
-	size_t sz = read(stdio, 0, 1, &chr);
-	ASSERT(sz == 1);
-	return chr;
+	// TODO
+	if (true) {
+		sc_fctl(tty_io, FC_SET_BLOCKING, 0);
+	}
 }
 
 
+int getchar() {
+	return fgetc(stdin);
+}
+
 int putchar(int c) {
-	char chr = c;
-	write(stdio, 0, 1, &chr);
-	return 0;	//TODO what?
+	return fputc(c, stdout);
 }
 
 int puts(const char* s) {
-	// TODO return EOF on error
-	return write(stdio, 0, strlen(s), s);
-}
-
-void getline(char* buf, size_t l) {
-	size_t i = 0;
-	while (true) {
-		int c = getchar();
-		if (c == '\n') {
-			putchar('\n');
-			buf[i] = 0;
-			break;
-		} else if (c == '\b') {
-			if (i > 0) {
-				 i--;
-				putchar('\b');
-			}
-		} else if (c >= ' ') {
-			buf[i] = c;
-			if (i < l-1) {
-				i++;
-				putchar(c);
-			}
-		}
-	}
+	return fputs(s, stdout);
 }
 
 int printf(const char* fmt, ...) {
@@ -139,9 +125,6 @@ int fclose(FILE* f) {
 	return 0;
 }
 
-FILE *stdin = 0;
-FILE *stdout = 0;
-FILE *stderr = 0;
 
 void setbuf(FILE *stream, char *buf) {
 	// TODO
diff --git a/src/lib/libc/stdlib.c b/src/lib/libc/stdlib.c
index d8598dd..540d53c 100644
--- a/src/lib/libc/stdlib.c
+++ b/src/lib/libc/stdlib.c
@@ -15,10 +15,10 @@ void abort() {
 	PANIC("Aborted.");
 }
 
-float strtof(const char *nptr, const char **endptr) {
+float strtof(const char *nptr, char **endptr) {
 	return (float)strtod(nptr, endptr);
 }
-double strtod(const char *nptr, const char **endptr) {
+double strtod(const char *nptr, char **endptr) {
 	// TODO: better (inf, nan, ...)
 
 	const char* p = nptr;
@@ -57,7 +57,7 @@ double strtod(const char *nptr, const char **endptr) {
 			for (int i = 0; i < exp; i++) val /= 10;
 		}
 	}
-	if (endptr != NULL) *endptr = p-1;
+	if (endptr != NULL) *endptr = (char*)(p-1);
 
 	return val * sign;
 }
diff --git a/src/lib/libc/syscall.c b/src/lib/libc/syscall.c
index 61b3471..83708da 100644
--- a/src/lib/libc/syscall.c
+++ b/src/lib/libc/syscall.c
@@ -5,7 +5,7 @@
 
 #include <string.h>
 
-static inline uint32_t call(uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t ss, uint32_t dd) {
+static inline uint32_t sc_docall(uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t ss, uint32_t dd) {
 	uint32_t ret;
 	asm volatile("int $0x40"
 		:"=a"(ret)
@@ -13,111 +13,101 @@ static inline uint32_t call(uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint
 	return ret;
 }
 
-void dbg_print(const char* str) {
-	call(SC_DBG_PRINT, (uint32_t)str, strlen(str), 0, 0, 0);
+void sc_dbg_print(const char* str) {
+	sc_docall(SC_DBG_PRINT, (uint32_t)str, strlen(str), 0, 0, 0);
 }
 
-void dbg_printf(const char* fmt, ...) {
-	va_list ap;
-	char buffer[256];
 
-	va_start(ap, fmt);
-	vsnprintf(buffer, 256, fmt, ap);
-	va_end(ap);
-
-	dbg_print(buffer);
-}
-
-void yield() {
-	call(SC_YIELD, 0, 0, 0, 0, 0);
+void sc_yield() {
+	sc_docall(SC_YIELD, 0, 0, 0, 0, 0);
 }
 
-void exit(int code) {
-	call(SC_EXIT, code, 0, 0, 0, 0);
+void sc_exit(int code) {
+	sc_docall(SC_EXIT, code, 0, 0, 0, 0);
 }
 
-void usleep(int usecs) {
-	call(SC_USLEEP, usecs, 0, 0, 0, 0);
+void sc_usleep(int usecs) {
+	sc_docall(SC_USLEEP, usecs, 0, 0, 0, 0);
 }
 
-bool sys_new_thread(void* eip, void* esp) {
-	return call(SC_NEW_THREAD, (uint32_t)eip, (uint32_t)esp, 0, 0, 0);
+bool sc_sys_new_thread(void* eip, void* esp) {
+	return sc_docall(SC_NEW_THREAD, (uint32_t)eip, (uint32_t)esp, 0, 0, 0);
 }
 
-void exit_thread() {
-	call(SC_EXIT_THREAD, 0, 0, 0, 0, 0);
+void sc_exit_thread() {
+	sc_docall(SC_EXIT_THREAD, 0, 0, 0, 0, 0);
 }
 
-bool mmap(void* addr, size_t size, int mode) {
-	return call(SC_MMAP, (uint32_t)addr, size, mode, 0, 0);
+bool sc_mmap(void* addr, size_t size, int mode) {
+	return sc_docall(SC_MMAP, (uint32_t)addr, size, mode, 0, 0);
 }
-bool mmap_file(fd_t file, size_t offset, void* addr, size_t size, int mode) {
-	return call(SC_MMAP_FILE, file, offset, (uint32_t)addr, size, mode);
+bool sc_mmap_file(fd_t file, size_t offset, void* addr, size_t size, int mode) {
+	return sc_docall(SC_MMAP_FILE, file, offset, (uint32_t)addr, size, mode);
 }
-bool mchmap(void* addr, int mode) {
-	return call(SC_MCHMAP, (uint32_t)addr, mode, 0, 0, 0);
+bool sc_mchmap(void* addr, int mode) {
+	return sc_docall(SC_MCHMAP, (uint32_t)addr, mode, 0, 0, 0);
 }
-bool munmap(void* addr) {
-	return call(SC_MUNMAP, (uint32_t)addr, 0, 0, 0, 0);
+bool sc_munmap(void* addr) {
+	return sc_docall(SC_MUNMAP, (uint32_t)addr, 0, 0, 0, 0);
 }
 
-bool create(const char* name, int type) {
-	return call(SC_CREATE, (uint32_t)name, strlen(name), type, 0, 0);
+bool sc_create(const char* name, int type) {
+	return sc_docall(SC_CREATE, (uint32_t)name, strlen(name), type, 0, 0);
 }
-bool delete(const char* name) {
-	return call(SC_CREATE, (uint32_t)name, strlen(name), 0, 0, 0);
+bool sc_delete(const char* name) {
+	return sc_docall(SC_CREATE, (uint32_t)name, strlen(name), 0, 0, 0);
 }
-bool move(const char* oldname, const char* newname) {
-	return call(SC_MOVE, (uint32_t)oldname, strlen(oldname), (uint32_t)newname, strlen(newname), 0);
+bool sc_move(const char* oldname, const char* newname) {
+	return sc_docall(SC_MOVE, (uint32_t)oldname, strlen(oldname), (uint32_t)newname, strlen(newname), 0);
 }
-bool stat(const char* name, stat_t *s) {
-	return call(SC_STAT, (uint32_t)name, strlen(name), (uint32_t)s, 0, 0);
+bool sc_stat(const char* name, stat_t *s) {
+	return sc_docall(SC_STAT, (uint32_t)name, strlen(name), (uint32_t)s, 0, 0);
 }
 
-fd_t open(const char* name, int mode) {
-	return call(SC_OPEN, (uint32_t)name, strlen(name), mode, 0, 0);
+fd_t sc_open(const char* name, int mode) {
+	return sc_docall(SC_OPEN, (uint32_t)name, strlen(name), mode, 0, 0);
 }
-void close(fd_t file) {
-	call(SC_CLOSE, file, 0, 0, 0, 0);
+void sc_close(fd_t file) {
+	sc_docall(SC_CLOSE, file, 0, 0, 0, 0);
 }
-size_t read(fd_t file, size_t offset, size_t len, char *buf) {
-	return call(SC_READ, file, offset, len, (uint32_t)buf, 0);
+size_t sc_read(fd_t file, size_t offset, size_t len, char *buf) {
+	return sc_docall(SC_READ, file, offset, len, (uint32_t)buf, 0);
 }
-size_t write(fd_t file, size_t offset, size_t len, const char* buf) {
-	return call(SC_WRITE, file, offset, len, (uint32_t)buf, 0);
+size_t sc_write(fd_t file, size_t offset, size_t len, const char* buf) {
+	return sc_docall(SC_WRITE, file, offset, len, (uint32_t)buf, 0);
 }
-bool readdir(fd_t file, size_t ent_no, dirent_t *d) {
-	return call(SC_READDIR, file, ent_no, (uint32_t)d, 0, 0);
+bool sc_readdir(fd_t file, size_t ent_no, dirent_t *d) {
+	return sc_docall(SC_READDIR, file, ent_no, (uint32_t)d, 0, 0);
 }
-bool stat_open(fd_t file, stat_t *s) {
-	return call(SC_STAT_OPEN, file, (uint32_t)s, 0, 0, 0);
+bool sc_stat_open(fd_t file, stat_t *s) {
+	return sc_docall(SC_STAT_OPEN, file, (uint32_t)s, 0, 0, 0);
 }
-int ioctl(fd_t file, int command, void* data) {
-	return call(SC_IOCTL, file, command, (uint32_t)data, 0, 0);
+int sc_ioctl(fd_t file, int command, void* data) {
+	return sc_docall(SC_IOCTL, file, command, (uint32_t)data, 0, 0);
 }
-int fctl(fd_t file, int command, void *data) {
-	return call(SC_FCTL, file, command, (uint32_t)data, 0, 0);
+int sc_fctl(fd_t file, int command, void *data) {
+	return sc_docall(SC_FCTL, file, command, (uint32_t)data, 0, 0);
 }
-bool select(sel_fd_t* fds, size_t nfds, int timeout) {
-	return call(SC_SELECT, (uint32_t)fds, nfds, timeout, 0, 0);
+bool sc_select(sel_fd_t* fds, size_t nfds, int timeout) {
+	return sc_docall(SC_SELECT, (uint32_t)fds, nfds, timeout, 0, 0);
 }
 
-fd_pair_t make_channel(bool blocking) {
+fd_pair_t sc_make_channel(bool blocking) {
 	fd_pair_t ret;
-	call(SC_MK_CHANNEL, blocking, (uint32_t)&ret, 0, 0, 0);
+	sc_docall(SC_MK_CHANNEL, blocking, (uint32_t)&ret, 0, 0, 0);
 	return ret;
 }
-fd_t make_shm(size_t s) {
-	return call(SC_MK_SHM, s, 0, 0, 0, 0);
+fd_t sc_make_shm(size_t s) {
+	return sc_docall(SC_MK_SHM, s, 0, 0, 0, 0);
 }
-bool gen_token(fd_t file, token_t *tok) {
-	return call(SC_GEN_TOKEN, file, (uint32_t)tok, 0, 0, 0);
+bool sc_gen_token(fd_t file, token_t *tok) {
+	return sc_docall(SC_GEN_TOKEN, file, (uint32_t)tok, 0, 0, 0);
 }
-fd_t use_token(token_t *tok) {
-	return call(SC_USE_TOKEN, (uint32_t)tok, 0, 0, 0, 0);
+fd_t sc_use_token(token_t *tok) {
+	return sc_docall(SC_USE_TOKEN, (uint32_t)tok, 0, 0, 0, 0);
 }
 
-bool make_fs(const char* name, const char* driver, fd_t source, const char* options) {
+bool sc_make_fs(const char* name, const char* driver, fd_t source, const char* options) {
 	volatile sc_make_fs_args_t args = {
 		.driver = driver,
 		.driver_strlen = strlen(driver),
@@ -128,12 +118,12 @@ bool make_fs(const char* name, const char* driver, fd_t source, const char* opti
 		.opts_strlen = strlen(options),
 		.bind_to_pid = 0,
 	};
-	return call(SC_MAKE_FS, (uint32_t)&args, 0, 0, 0, 0);
+	return sc_docall(SC_MAKE_FS, (uint32_t)&args, 0, 0, 0, 0);
 }
-bool fs_add_source(const char* fs, fd_t source, const char* options) {
-	return call(SC_FS_ADD_SRC, (uint32_t)fs, strlen(fs), source, (uint32_t)options, strlen(options));
+bool sc_fs_add_source(const char* fs, fd_t source, const char* options) {
+	return sc_docall(SC_FS_ADD_SRC, (uint32_t)fs, strlen(fs), source, (uint32_t)options, strlen(options));
 }
-bool fs_subfs(const char* name, const char* orig_fs, const char* root, int ok_modes) {
+bool sc_fs_subfs(const char* name, const char* orig_fs, const char* root, int ok_modes) {
 	volatile sc_subfs_args_t args = {
 		.new_name = name,
 		.new_name_strlen = strlen(name),
@@ -144,19 +134,19 @@ bool fs_subfs(const char* name, const char* orig_fs, const char* root, int ok_mo
 		.ok_modes = ok_modes,
 		.bind_to_pid = 0
 	};
-	return call(SC_SUBFS, (uint32_t)(&args), 0, 0, 0, 0);
+	return sc_docall(SC_SUBFS, (uint32_t)(&args), 0, 0, 0, 0);
 }
-void fs_remove(const char* name) {
-	call(SC_RM_FS, (uint32_t)name, strlen(name), 0, 0, 0);
+void sc_fs_remove(const char* name) {
+	sc_docall(SC_RM_FS, (uint32_t)name, strlen(name), 0, 0, 0);
 }
 
-pid_t new_proc() {
-	return call(SC_NEW_PROC, 0, 0, 0, 0, 0);
+pid_t sc_new_proc() {
+	return sc_docall(SC_NEW_PROC, 0, 0, 0, 0, 0);
 }
-bool bind_fs(pid_t pid, const char* new_name, const char* fs) {
-	return call(SC_BIND_FS, pid, (uint32_t)new_name, strlen(new_name), (uint32_t)fs, strlen(fs));
+bool sc_bind_fs(pid_t pid, const char* new_name, const char* fs) {
+	return sc_docall(SC_BIND_FS, pid, (uint32_t)new_name, strlen(new_name), (uint32_t)fs, strlen(fs));
 }
-bool bind_subfs(pid_t pid, const char* new_name, const char* orig_fs, const char* root, int ok_modes) {
+bool sc_bind_subfs(pid_t pid, const char* new_name, const char* orig_fs, const char* root, int ok_modes) {
 	sc_subfs_args_t args = {
 		.new_name = new_name,
 		.new_name_strlen = strlen(new_name),
@@ -167,9 +157,9 @@ bool bind_subfs(pid_t pid, const char* new_name, const char* orig_fs, const char
 		.ok_modes = ok_modes,
 		.bind_to_pid = pid
 	};
-	return call(SC_BIND_SUBFS, (uint32_t)&args, 0, 0, 0, 0);
+	return sc_docall(SC_BIND_SUBFS, (uint32_t)&args, 0, 0, 0, 0);
 }
-bool bind_make_fs(pid_t pid, const char* name, const char* driver, fd_t source, const char* options) {
+bool sc_bind_make_fs(pid_t pid, const char* name, const char* driver, fd_t source, const char* options) {
 	sc_make_fs_args_t args = {
 		.driver = driver,
 		.driver_strlen = strlen(driver),
@@ -180,25 +170,23 @@ bool bind_make_fs(pid_t pid, const char* name, const char* driver, fd_t source,
 		.opts_strlen = strlen(options),
 		.bind_to_pid = pid,
 	};
-	return call(SC_BIND_MAKE_FS, (uint32_t)&args, 0, 0, 0, 0);
+	return sc_docall(SC_BIND_MAKE_FS, (uint32_t)&args, 0, 0, 0, 0);
 }
-bool bind_fd(pid_t pid, fd_t new_fd, fd_t fd) {
-	return call(SC_BIND_FD, pid, new_fd, fd, 0, 0);
+bool sc_bind_fd(pid_t pid, fd_t new_fd, fd_t fd) {
+	return sc_docall(SC_BIND_FD, pid, new_fd, fd, 0, 0);
 }
-bool proc_exec(pid_t pid, const char* file) {
-	return call(SC_PROC_EXEC, pid, (uint32_t)file, strlen(file), 0, 0);
+bool sc_proc_exec(pid_t pid, const char* file) {
+	return sc_docall(SC_PROC_EXEC, pid, (uint32_t)file, strlen(file), 0, 0);
 }
-bool proc_status(pid_t pid, proc_status_t *s) {
-	return call(SC_PROC_STATUS, pid, (uint32_t)s, 0, 0, 0);
+bool sc_proc_status(pid_t pid, proc_status_t *s) {
+	return sc_docall(SC_PROC_STATUS, pid, (uint32_t)s, 0, 0, 0);
 }
-bool proc_kill(pid_t pid, proc_status_t *s) {
-	return call(SC_PROC_KILL, pid, (uint32_t)s, 0, 0, 0);
+bool sc_proc_kill(pid_t pid, proc_status_t *s) {
+	return sc_docall(SC_PROC_KILL, pid, (uint32_t)s, 0, 0, 0);
 }
-void proc_wait(pid_t pid, bool block, proc_status_t *s) {
-	call(SC_PROC_WAIT, pid, block, (uint32_t)s, 0, 0);
+void sc_proc_wait(pid_t pid, bool block, proc_status_t *s) {
+	sc_docall(SC_PROC_WAIT, pid, block, (uint32_t)s, 0, 0);
 }
 
 
-
-
 /* vim: set ts=4 sw=4 tw=0 noet :*/
diff --git a/src/lib/libc/unistd.c b/src/lib/libc/unistd.c
index 5ae1735..f5a7a3c 100644
--- a/src/lib/libc/unistd.c
+++ b/src/lib/libc/unistd.c
@@ -22,7 +22,7 @@ int chdir(const char* path) {
 	if (!pathncat(cwd_buf2, path, 256)) return -1;
 
 	stat_t st;
-	if (!stat(cwd_buf2, &st)) return -1;
+	if (!sc_stat(cwd_buf2, &st)) return -1;
 	if (!(st.type & FT_DIR)) return -1;
 
 	strcpy(cwd_buf, cwd_buf2);
diff --git a/src/lib/libkogata/draw.c b/src/lib/libkogata/draw.c
index d988cb9..6aa3387 100644
--- a/src/lib/libkogata/draw.c
+++ b/src/lib/libkogata/draw.c
@@ -19,7 +19,7 @@ fb_t *g_fb_from_file(fd_t file, fb_info_t *geom) {
 	ret->data = (uint8_t*)region_alloc(geom->height * geom->pitch, "Framebuffer");
 	if (ret->data == 0) goto error;
 
-	bool map_ok = mmap_file(file, 0, ret->data, geom->height * geom->pitch, MM_READ | MM_WRITE);
+	bool map_ok = sc_mmap_file(file, 0, ret->data, geom->height * geom->pitch, MM_READ | MM_WRITE);
 	if (!map_ok) goto error;
 
 	return ret;
@@ -43,7 +43,7 @@ fb_t *g_fb_from_mem(uint8_t* data, fb_info_t *geom) {
 
 void g_delete_fb(fb_t *fb) {
 	if (fb->fd != 0) {
-		munmap(fb->data);
+		sc_munmap(fb->data);
 		region_free(fb->data);
 	}
 	free(fb);
@@ -237,7 +237,7 @@ font_t *g_load_ascii_bitmap_font(fd_t f) {
 
 	ascii_bitmap_font_header h;
 
-	size_t s = read(f, 0, sizeof(h), (char*)&h);
+	size_t s = sc_read(f, 0, sizeof(h), (char*)&h);
 	if (s != sizeof(h)) goto error;
 
 	if (h.magic != ASCII_BITMAP_FONT_MAGIC) goto error;
@@ -255,7 +255,7 @@ font_t *g_load_ascii_bitmap_font(fd_t f) {
 	font->ascii_bitmap.data = (uint8_t*)malloc(h.ch * h.nchars);
 	if (font->ascii_bitmap.data == 0) goto error;
 
-	size_t rd = read(f, sizeof(h), h.ch * h.nchars, (char*)font->ascii_bitmap.data);
+	size_t rd = sc_read(f, sizeof(h), h.ch * h.nchars, (char*)font->ascii_bitmap.data);
 	if (rd != h.ch * h.nchars) goto error;
 
 	return font;
@@ -263,7 +263,7 @@ font_t *g_load_ascii_bitmap_font(fd_t f) {
 error:
 	if (font && font->ascii_bitmap.data) free(font->ascii_bitmap.data);
 	if (font) free(font);
-	close(f);
+	sc_close(f);
 	return 0;
 }
 
@@ -271,7 +271,7 @@ font_t *g_load_font(const char* fontname) {
 	char buf[128];
 
 	snprintf(buf, 128, "sys:/fonts/%s.bf", fontname);
-	fd_t f = open(buf, FM_READ);
+	fd_t f = sc_open(buf, FM_READ);
 	if (f != 0) return g_load_ascii_bitmap_font(f);
 
 	return 0;
diff --git a/src/lib/libkogata/keyboard.c b/src/lib/libkogata/keyboard.c
index e7fb08b..64569ed 100644
--- a/src/lib/libkogata/keyboard.c
+++ b/src/lib/libkogata/keyboard.c
@@ -57,14 +57,14 @@ bool load_keymap(keyboard_t *kb, const char* kmname) {
 	char buf[128];
 	snprintf(buf, 128, "sys:/keymaps/%s.km", kmname);
 
-	fd_t f = open(buf, FM_READ);
+	fd_t f = sc_open(buf, FM_READ);
 	if (f == 0) {
 		dbg_printf("Failed to open keymap %s\n", buf);
 		return false;
 	}
 
 	keymap_t km;
-	size_t rd = read(f, 0, sizeof(keymap_t), (char*)&km);
+	size_t rd = sc_read(f, 0, sizeof(keymap_t), (char*)&km);
 
 	bool ok = (rd == sizeof(keymap_t));
 
@@ -73,7 +73,7 @@ bool load_keymap(keyboard_t *kb, const char* kmname) {
 		kb->status = 0;
 	}
 
-	close(f);
+	sc_close(f);
 
 	return ok;
 }
diff --git a/src/lib/libkogata/mainloop.c b/src/lib/libkogata/mainloop.c
index bce1174..c1758a4 100644
--- a/src/lib/libkogata/mainloop.c
+++ b/src/lib/libkogata/mainloop.c
@@ -91,7 +91,7 @@ void mainloop_run() {
 
 		//  ---- Do the select
 		/*dbg_printf("(mainloop) begin select\n");*/
-		bool ok = select(sel_arg, nfds, -1);
+		bool ok = sc_select(sel_arg, nfds, -1);
 		if (!ok) {
 			dbg_printf("(mainloop) Failed to select.\n");
 			free(sel_arg);
@@ -107,7 +107,7 @@ void mainloop_run() {
 					fd->on_error(fd);
 				} else if ((sel_arg[i].got_flags & SEL_READ) && fd->rd_buf != 0) {
 					fd->rd_buf_filled +=
-						read(fd->fd, 0, fd->rd_buf_expect_size - fd->rd_buf_filled, fd->rd_buf + fd->rd_buf_filled);
+						sc_read(fd->fd, 0, fd->rd_buf_expect_size - fd->rd_buf_filled, fd->rd_buf + fd->rd_buf_filled);
 					if (fd->rd_buf_filled == fd->rd_buf_expect_size) {
 						/*dbg_printf("(mainloop) finish read %d\n", fd->rd_buf_expect_size);*/
 						fd->rd_buf_filled = 0;
@@ -118,7 +118,7 @@ void mainloop_run() {
 					size_t remain_size = fd->wr_bufs[0].size - fd->wr_bufs[0].written;
 					void* write_ptr = fd->wr_bufs[0].buf + fd->wr_bufs[0].written;
 
-					fd->wr_bufs[0].written += write(fd->fd, 0, remain_size, write_ptr);
+					fd->wr_bufs[0].written += sc_write(fd->fd, 0, remain_size, write_ptr);
 
 					if (fd->wr_bufs[0].written == fd->wr_bufs[0].size) {
 						/*dbg_printf("(mainloop) finish write %d\n", fd->wr_bufs[0].size);*/
diff --git a/src/lib/linker.ld b/src/lib/linker.ld
new file mode 100644
index 0000000..7495c6c
--- /dev/null
+++ b/src/lib/linker.ld
@@ -0,0 +1,33 @@
+ENTRY (__libc_start)
+ 
+SECTIONS{
+    . = 0x100000;
+ 
+    .text : {
+        *(.text)
+    }
+ 
+    .rodata ALIGN (0x1000)  :{
+        *(.rodata)
+    }
+ 
+    .data ALIGN (0x1000) : {
+		start_ctors = .;
+		*(.ctor*)
+		end_ctors = .;
+		start_dtors = .;
+		*(.dtor*)
+		end_dtors = .;
+        *(.data)
+		*(.locks)
+    }
+ 
+    .bss : {
+        sbss = .;
+        *(COMMON)
+        *(.bss)
+        ebss = .;
+    }
+ 
+	end = .; _end = .; __end = .;
+}