Lars, your wish may come true if you fix this!

6 files changed, 33 insertions, 4 deletions

diff --git a/src/kernel/syscall/actions/sys_read.c b/src/kernel/syscall/actions/sys_read.c
index 673d2d9..f04f3ef 100644
--- a/src/kernel/syscall/actions/sys_read.c
+++ b/src/kernel/syscall/actions/sys_read.c
@@ -13,4 +13,9 @@ uint32_t sys_read(char *buf)
     }
     memcpy(buf, keyboard_buffer, strlen(keyboard_buffer));
     return strlen(buf);
+}
+
+uint32_t sys_readc()
+{
+    return getch();
 }
\ No newline at end of file
diff --git a/src/kernel/syscall/actions/sys_write.c b/src/kernel/syscall/actions/sys_write.c
index f159335..554ac5f 100644
--- a/src/kernel/syscall/actions/sys_write.c
+++ b/src/kernel/syscall/actions/sys_write.c
@@ -7,4 +7,14 @@ uint32_t sys_write(char *buf)
 {
     printf(buf);
     return strlen((const char *) buf);
+}
+
+uint32_t sys_writec(char ch)
+{
+    serial_write_hex(ch);
+    serial_write("\n");
+    serial_put(ch);
+    serial_write("\n\n");
+    writec(ch);
+    return 0;
 }
\ No newline at end of file
diff --git a/src/kernel/syscall/syscall.c b/src/kernel/syscall/syscall.c
index eb44c87..89b70eb 100644
--- a/src/kernel/syscall/syscall.c
+++ b/src/kernel/syscall/syscall.c
@@ -7,7 +7,9 @@ typedef uint32_t (*syscall_func)(unsigned int, ...);
 
 uint32_t (*syscalls[])() = {
         [1] = sys_write,
-        [2] = sys_read
+        [2] = sys_read,
+        [3] = (uint32_t (*)()) sys_writec,
+        [4] = sys_readc
 };
 
 void syscall_handler(struct regs *r)
diff --git a/src/kernel/syscall/syscall.h b/src/kernel/syscall/syscall.h
index f441cf1..046d702 100644
--- a/src/kernel/syscall/syscall.h
+++ b/src/kernel/syscall/syscall.h
@@ -7,6 +7,10 @@ void syscalls_install();
 
 uint32_t sys_write(char *buf);
 
+uint32_t sys_writec(char ch);
+
 uint32_t sys_read(char *buf);
 
+uint32_t sys_readc();
+
 #endif
\ No newline at end of file
diff --git a/src/userspace/main.c b/src/userspace/main.c
index 1e68496..64077eb 100644
--- a/src/userspace/main.c
+++ b/src/userspace/main.c
@@ -6,8 +6,7 @@ void user_main()
     syscall_write(hello);
 
     while (1) {
-        char buffer[20] = {'\0'};
-        syscall_read(buffer);
-        syscall_write(buffer);
+        char ch = (char) syscall_readc();
+        syscall_writec(ch);
     };
 }
\ No newline at end of file
diff --git a/src/userspace/syscall.h b/src/userspace/syscall.h
index d5d8920..4ddd9d2 100644
--- a/src/userspace/syscall.h
+++ b/src/userspace/syscall.h
@@ -66,6 +66,11 @@ DECL_SYSCALL1(write, char *);
 
 DECL_SYSCALL1(read, char *);
 
+DECL_SYSCALL1(writec, char);
+
+DECL_SYSCALL0(readc);
+
+
 /**
  * DEFINITIONS
  */
@@ -73,4 +78,8 @@ DEFN_SYSCALL1(write, 1, char *);
 
 DEFN_SYSCALL1(read, 2, char *);
 
+DEFN_SYSCALL1(writec, 3, char);
+
+DEFN_SYSCALL0(readc, 4);
+
 #endif