Changeset 759 for soft/giet_vm/giet_libs/stdio.c

Timestamp:

Jan 18, 2016, 4:57:13 PM (8 years ago)

Author:

alain

Message:

Introduce 4 new FAT related system calls:

• giet_fat_pread()
• giet_fat_fprintf()
• giet_fat_map()
• giet_fat_unmap()

File:

• soft/giet_vm/giet_libs/stdio.c (modified) (4 diffs)

soft/giet_vm/giet_libs/stdio.c

@@ -992 +992 @@
                      (unsigned int)buffer,
                      count,
-                     0 );      // no physical addressing required
+                     0 );
+}
+
+///////////////////////////////////////
+int giet_fat_pread( unsigned int fd_id,     
+                    void*        buffer, 
+                    unsigned int count,  
+                    unsigned int offset )  
+{
+    return sys_call( SYSCALL_FAT_PREAD,
+                     fd_id,
+                     (unsigned int)buffer,
+                     count,
+                     offset ); 
 }
 
@@ -1004 +1017 @@
                      (unsigned int)buffer,
                      count,
-                     0 );      // no physical addressing required
+                     0 ); 
 }
 
@@ -1083 +1096 @@
 
     va_start( args, format );
+
     count = xprintf( stream, 4096, format, &args ); 
     va_end( args );
 
-    if ( count == 0xFFFFFFFF ) giet_pthread_exit("illegal format in giet_fat_fprintf()");
+    if ( count == 0xFFFFFFFF ) giet_pthread_exit("error in giet_fat_fprintf()");
 
     return sys_call( SYSCALL_FAT_WRITE, 
@@ -1093 +1107 @@
                      count,
                      0 );      // no physical addressing required
+}
+
+/////////////////////////////////////////
+void* giet_fat_mmap( void*         vaddr,        // MAP_FIXED not supported
+                     unsigned int  length,
+                     unsigned int  prot,
+                     unsigned int  flags,
+                     unsigned int  fd_id,
+                     unsigned int  offset )
+{
+    if ( flags & MAP_FIXED )     giet_pthread_exit("error in giet_fat_mmap()");
+    if ( flags & MAP_PRIVATE )   giet_pthread_exit("error in giet_fat_mmap()");
+    if ( flags & MAP_ANONYMOUS ) giet_pthread_exit("error in giet_fat_mmap()");
+    if ( length & 0xFFF )        giet_pthread_exit("error in giet_fat_mmap()");
+    if ( offset & 0xFFF )        giet_pthread_exit("error in giet_fat_mmap()");
+
+    return (void*)sys_call( SYSCALL_FAT_MMAP,
+                            fd_id,
+                            length>>12,
+                            offset>>12,
+                            prot );
 }