Merge branch 'master' of https://github.com/zylin/zpu

1 files changed, 46 insertions, 0 deletions

diff --git a/zpu/sw/simulator/com/zylin/zpu/simulator/Host.java b/zpu/sw/simulator/com/zylin/zpu/simulator/Host.java
new file mode 100644
index 0000000..c1daa9f
--- /dev/null
+++ b/zpu/sw/simulator/com/zylin/zpu/simulator/Host.java
@@ -0,0 +1,46 @@
+
+package com.zylin.zpu.simulator;
+
+import com.zylin.zpu.simulator.exceptions.CPUException;
+
+public interface Host
+{
+	/** generic file io error */
+	public final static int  EIO =    5;
+	
+    public final static int  SYS_read=    4;
+    public final static int  SYS_write=   5;
+	public final static int  SYS_argv   = 13;
+	public final static int SYS_exit=1;
+	public final static int  SYS_open=    2;
+	public final static int  SYS_close=   3;
+	public final static int  SYS_lseek =  6;
+	public final static int  SYS_unlink = 7;
+	public final static int  SYS_getpid = 8;
+	public final static int  SYS_kill  =  9;
+	public final static int  SYS_fstat =      10;
+	/*final static int  SYS_sbrk  11 - not currently a system call, but reserved.  */
+	/* ARGV support.  */
+	public final static int  SYS_argvlen= 12;
+	/* These are extras added for one reason or another.  */
+	public final static int  SYS_chdir  =  14;
+	public final static int  SYS_stat   =  15;
+	public final static int  SYS_chmod  =  16;
+	public final static int  SYS_utime  =  17;
+	public final static int  SYS_time   =  18;
+	public final static int  SYS_gettimeofday =19;
+	public final static int  SYS_times  =  20;
+	public final static int  SYS_link   =  21;
+	public final static int  SYS_ftruncate=3000;
+	public final static int  SYS_isatty=3001;
+    public void syscall(Sim s) throws CPUException;
+    boolean doneContinue();
+    public void writeUART(int val);
+    public int readUART() throws CPUException;
+    public int readFIFO();
+    /** notification that the CPU is halted */
+	public void halted();
+	/** notification that the CPU is running */
+	public void running();
+    
+}