update name of code to labcodes

labcodes/lab7/user/libs/syscall.c

@@ -0,0 +1,87 @@
+#include <defs.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <syscall.h>
+
+#define MAX_ARGS            5
+
+static inline int
+syscall(int num, ...) {
+    va_list ap;
+    va_start(ap, num);
+    uint32_t a[MAX_ARGS];
+    int i, ret;
+    for (i = 0; i < MAX_ARGS; i ++) {
+        a[i] = va_arg(ap, uint32_t);
+    }
+    va_end(ap);
+
+    asm volatile (
+        "int %1;"
+        : "=a" (ret)
+        : "i" (T_SYSCALL),
+          "a" (num),
+          "d" (a[0]),
+          "c" (a[1]),
+          "b" (a[2]),
+          "D" (a[3]),
+          "S" (a[4])
+        : "cc", "memory");
+    return ret;
+}
+
+int
+sys_exit(int error_code) {
+    return syscall(SYS_exit, error_code);
+}
+
+int
+sys_fork(void) {
+    return syscall(SYS_fork);
+}
+
+int
+sys_wait(int pid, int *store) {
+    return syscall(SYS_wait, pid, store);
+}
+
+int
+sys_yield(void) {
+    return syscall(SYS_yield);
+}
+
+int
+sys_kill(int pid) {
+    return syscall(SYS_kill, pid);
+}
+
+int
+sys_getpid(void) {
+    return syscall(SYS_getpid);
+}
+
+int
+sys_putc(int c) {
+    return syscall(SYS_putc, c);
+}
+
+int
+sys_pgdir(void) {
+    return syscall(SYS_pgdir);
+}
+
+int
+sys_gettime(void) {
+    return syscall(SYS_gettime);
+}
+
+void
+sys_lab6_set_priority(uint32_t priority)
+{
+    syscall(SYS_lab6_set_priority, priority);
+}
+
+int
+sys_sleep(unsigned int time) {
+    return syscall(SYS_sleep, time);
+}