Changeset 408 for trunk/kernel/kern/printk.c

Timestamp:

Dec 5, 2017, 4:20:07 PM (6 years ago)

Author:

alain

Message:

Fix several bugs in the fork() syscall.

File:

• trunk/kernel/kern/printk.c (modified) (1 diff)

trunk/kernel/kern/printk.c

@@ -453 +453 @@
 }
 
+//////////////////////////
+void puts( char * string ) 
+{
+    uint32_t   save_sr;
+    uint32_t   n = 0;
+
+    // compute string length
+    while ( string[n] > 0 ) n++;
+
+    // get pointers on TXT0 chdev
+    xptr_t    txt0_xp  = chdev_dir.txt_tx[0];
+    cxy_t     txt0_cxy = GET_CXY( txt0_xp );
+    chdev_t * txt0_ptr = GET_PTR( txt0_xp );
+
+    // get extended pointer on remote TXT0 chdev lock
+    xptr_t  lock_xp = XPTR( txt0_cxy , &txt0_ptr->wait_lock );
+
+    // get TXT0 lock in busy waiting mode
+    remote_spinlock_lock_busy( lock_xp , &save_sr );
+
+    // display string on TTY0
+    dev_txt_sync_write( string , n );
+
+    // release TXT0 lock in busy waiting mode
+    remote_spinlock_unlock_busy( lock_xp , save_sr );
+}
+
+
+/////////////////////////
+void putx( uint32_t val )
+{
+    static const char HexaTab[] = "0123456789ABCDEF";
+
+    char      buf[10];
+    uint32_t  c;
+    uint32_t  save_sr;
+
+    buf[0] = '0';
+    buf[1] = 'x';
+
+    // build buffer
+    for (c = 0; c < 8; c++) 
+    { 
+        buf[9 - c] = HexaTab[val & 0xF];
+        val = val >> 4;
+    }
+
+    // get pointers on TXT0 chdev
+    xptr_t    txt0_xp  = chdev_dir.txt_tx[0];
+    cxy_t     txt0_cxy = GET_CXY( txt0_xp );
+    chdev_t * txt0_ptr = GET_PTR( txt0_xp );
+
+    // get extended pointer on remote TXT0 chdev lock
+    xptr_t  lock_xp = XPTR( txt0_cxy , &txt0_ptr->wait_lock );
+
+    // get TXT0 lock in busy waiting mode
+    remote_spinlock_lock_busy( lock_xp , &save_sr );
+
+    // display string on TTY0
+    dev_txt_sync_write( buf , 10 );
+
+    // release TXT0 lock in busy waiting mode
+    remote_spinlock_unlock_busy( lock_xp , save_sr );
+}
+
+/////////////////////////
+void putl( uint64_t val )
+{
+    static const char HexaTab[] = "0123456789ABCDEF";
+
+    char      buf[18];
+    uint32_t  c;
+    uint32_t  save_sr;
+
+    buf[0] = '0';
+    buf[1] = 'x';
+
+    // build buffer
+    for (c = 0; c < 16; c++) 
+    { 
+        buf[17 - c] = HexaTab[(unsigned int)val & 0xF];
+        val = val >> 4;
+    }
+
+    // get pointers on TXT0 chdev
+    xptr_t    txt0_xp  = chdev_dir.txt_tx[0];
+    cxy_t     txt0_cxy = GET_CXY( txt0_xp );
+    chdev_t * txt0_ptr = GET_PTR( txt0_xp );
+
+    // get extended pointer on remote TXT0 chdev lock
+    xptr_t  lock_xp = XPTR( txt0_cxy , &txt0_ptr->wait_lock );
+
+    // get TXT0 lock in busy waiting mode
+    remote_spinlock_lock_busy( lock_xp , &save_sr );
+
+    // display string on TTY0
+    dev_txt_sync_write( buf , 18 );
+
+    // release TXT0 lock in busy waiting mode
+    remote_spinlock_unlock_busy( lock_xp , save_sr );
+}
+
 
 // Local Variables: