From a987a24e4acefec847654829979312ff7b382c83 Mon Sep 17 00:00:00 2001
From: aramya <22577625+thamugadi@users.noreply.github.com>
Date: Sat, 1 Jul 2023 16:03:33 +0100
Subject: [PATCH] io, mem

---
 entry/ofw/io.c  | 73 +++++++++++++++++++++++++++++++++++++++++++++++++
 entry/ofw/mem.c | 47 +++++++++++++++++++++++++++++++
 2 files changed, 120 insertions(+)
 create mode 100644 entry/ofw/mem.c

diff --git a/entry/ofw/io.c b/entry/ofw/io.c
index 3afe999..a65c830 100644
--- a/entry/ofw/io.c
+++ b/entry/ofw/io.c
@@ -38,3 +38,76 @@ void close(ihandle instance)
         ofw(&ofw_arg);
 }
 
+int32_t read(ihandle instance, void* addr, int32_t len)
+{
+        struct
+        {
+                char* service;
+                int32_t n_args;
+                int32_t n_rets;
+                ihandle arg1;
+		void* arg2;
+		int32_t arg3;
+		int32_t ret;
+        } ofw_arg;
+
+	SERVICE("read", 5, 3, 1);
+
+	ofw_arg.arg1 = instance;
+	ofw_arg.arg2 = addr;
+	ofw_arg.arg3 = len;
+
+	ofw(&ofw_arg);
+
+	return ofw_arg.ret;
+}
+
+int32_t write(ihandle instance, void* addr, int32_t len)
+{
+        struct
+        {
+                char* service;
+                int32_t n_args;
+                int32_t n_rets;
+                ihandle arg1;
+                void* arg2;
+                int32_t arg3; 
+                int32_t ret;
+        } ofw_arg;
+         
+        SERVICE("write", 6, 3, 1);
+        
+        ofw_arg.arg1 = instance;
+        ofw_arg.arg2 = addr;
+        ofw_arg.arg3 = len;
+        
+        ofw(&ofw_arg);
+        
+        return ofw_arg.ret;
+
+}
+
+int32_t seek(ihandle instance, int32_t pos_hi, int32_t pos_lo)
+{
+        struct
+        {
+                char* service;
+                int32_t n_args;
+                int32_t n_rets;
+                ihandle arg1;
+                int32_t* arg2;
+                int32_t arg3; 
+                int32_t ret;
+        } ofw_arg;
+         
+        SERVICE("seek", 5, 3, 1);
+        
+        ofw_arg.arg1 = instance;
+        ofw_arg.arg2 = pos_hi;
+        ofw_arg.arg3 = pos_lo;
+        
+        ofw(&ofw_arg);
+        
+        return ofw_arg.ret;
+
+}
diff --git a/entry/ofw/mem.c b/entry/ofw/mem.c
new file mode 100644
index 0000000..a380ad2
--- /dev/null
+++ b/entry/ofw/mem.c
@@ -0,0 +1,47 @@
+#include <ofw.h>
+
+extern void (*ofw)();
+
+void* claim(void* virt, int32_t size, int32_t align)
+{
+        struct
+        {
+                char* service;
+                int32_t n_args;
+                int32_t n_rets;
+                void* arg1;
+		int32_t arg2;
+                int32_t arg3;
+		void* ret;
+        } ofw_arg;
+
+	SERVICE("claim", 6, 3, 1);
+
+        ofw_arg.arg1 = virt;
+	ofw_arg.arg2 = size;
+	ofw_arg.arg3 = align;
+
+        ofw(&ofw_arg);
+        return ofw_arg.ret;
+}
+
+    
+void release(void* virt, int32_t size)
+{
+        struct
+        {  
+                char* service;
+                int32_t n_args;
+                int32_t n_rets;
+                void* arg1;
+                int32_t arg2;
+        } ofw_arg;
+
+        SERVICE("release", 8, 2, 0);
+
+        ofw_arg.arg1 = virt;
+        ofw_arg.arg2 = size;
+
+        ofw(&ofw_arg);
+}
+