Changeset 0a5116db in mainline

Timestamp:

2009-03-21T22:02:10Z (15 years ago)

Author:

Jiri Svoboda <jirik.svoboda@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

dc033a1

Parents:

d2cc7e1

Message:

Fix EGA.

File:

• uspace/srv/fb/ega.c (modified) (2 diffs)

uspace/srv/fb/ega.c

@@ -232 +232 @@
 }
 
+#define FB_WRITE_BUF_SIZE 256
+static char fb_write_buf[FB_WRITE_BUF_SIZE];
+
+static void fb_write(ipc_callid_t rid, ipc_call_t *request)
+{
+        int row, col;
+        ipc_callid_t callid;
+        size_t len;
+        size_t i;
+
+        row = IPC_GET_ARG1(*request);
+        col = IPC_GET_ARG2(*request);
+
+        if ((col >= scr_width) || (row >= scr_height)) {
+                ipc_answer_0(callid, EINVAL);
+                ipc_answer_0(rid, EINVAL);
+                return;
+        }
+
+        if (!ipc_data_write_receive(&callid, &len)) {
+                ipc_answer_0(callid, EINVAL);
+                ipc_answer_0(rid, EINVAL);
+                return;
+        }
+
+        if (len > FB_WRITE_BUF_SIZE)
+                len = FB_WRITE_BUF_SIZE;
+        if (len >= scr_width - col)
+                len = scr_width - col;
+
+        (void) ipc_data_write_finalize(callid, fb_write_buf, len);
+
+        for (i = 0; i < len; i++) {
+                printchar(fb_write_buf[i], row, col++);
+        }
+
+        ipc_answer_1(rid, EOK, len);
+}
+
 static void ega_client_connection(ipc_callid_t iid, ipc_call_t *icall)
 {
@@ -296 +335 @@
                         retval = 0;
                         break;
+                case FB_WRITE:
+                        fb_write(callid, &call);
+
+                        /* Message already answered */
+                        continue;
                 case FB_CURSOR_GOTO:
                         row = IPC_GET_ARG1(call);