[sys] And now for the user side too

Makefile

@@ -117,7 +117,7 @@ loader/crtbegin.o: loader/crtbegin.s
 	@${YASM} -f elf32 -o $@ $<
 	@${ECHO} "\r\033[32;1m  yasm  $<\033[0m"
 
-initrd/bin/%: loader/%.o loader/crtbegin.o
+initrd/bin/%: loader/%.o loader/crtbegin.o loader/syscall.o
 	@${ECHO} -n "\033[32m   LD   $<\033[0m"
 	@${LD} -T loader/link.ld -o $@ $<
 	@${ECHO} "\r\033[32;1m   LD   $<\033[0m"

loader/echo.c

@@ -1,16 +1,18 @@
-int syscall_print(const char * p1) {
-	int a = 0xA5ADFACE;
-	__asm__ __volatile__("int $0x7F" : "=a" (a) : "0" (1), "b" ((int)p1));
-	return a;
-}
+#include <syscall.h>
 
 int main(int argc, char ** argv) {
-    for (int i = 1; i < argc; ++i) {
-	syscall_print(argv[i]);
-	if (i != argc - 1) {
-		syscall_print(" ");
+	for (int i = 1; i < argc; ++i) {
+		syscall_print(argv[i]);
+		if (i != argc - 1) {
+			syscall_print(" ");
+		}
 	}
-    }
-    syscall_print("\n");
-    return 0;
+	syscall_print("\n");
+	return 0;
 }
+
+/*
+ * vim:tabstop=4
+ * vim:noexpandtab
+ * vim:shiftwidth=4
+ */

loader/link.ld

@@ -5,6 +5,7 @@
 OUTPUT_FORMAT(elf32-i386)
 ENTRY(_start)
 STARTUP(loader/crtbegin.o)
+INPUT(loader/syscall.o)
 phys = 0x02000000;
 SECTIONS
 {

loader/syscall.c

@@ -0,0 +1,5 @@
+#include <syscall.h>
+
+DEFN_SYSCALL1(exit,  0, int)
+DEFN_SYSCALL1(print, 1, const char *)
+

loader/test.c

@@ -1,8 +1,12 @@
 #include <syscall.h>
 
-DEFN_SYSCALL1(print, 1, const char *)
-
 int main(int argc, char ** argv) {
-    syscall_print("Hello world!\n");
-    return 0;
+	syscall_print("Hello world!\n");
+	return 0;
 }
+
+/*
+ * vim:tabstop=4
+ * vim:noexpandtab
+ * vim:shiftwidth=4
+ */