X-Git-Url: http://git.subgeniuskitty.com/pforth/.git/blobdiff_plain/406a0545a94f43e880e883da3673f705467ecab3..566edb7be0ec4eab067cae1134be69466dce0b04:/csrc/pf_inner.c

diff --git a/csrc/pf_inner.c b/csrc/pf_inner.c
index dcf12c6..295ee55 100644
--- a/csrc/pf_inner.c
+++ b/csrc/pf_inner.c
@@ -199,6 +199,24 @@ static void TraceNames( ExecToken Token, cell_t Level )
 /* Use local copy of CODE_BASE for speed. */
 #define LOCAL_CODEREL_TO_ABS( a ) ((cell_t *) (((cell_t) a) + CodeBase))
 
+/* Truncate the unsigned double cell integer LO/HI to an uint64_t. */
+static uint64_t UdToUint64( ucell_t Lo, ucell_t Hi )
+{
+    return (( 2 * sizeof(ucell_t) == sizeof(uint64_t) )
+	    ? (((uint64_t)Lo) | (((uint64_t)Hi) >> (sizeof(ucell_t) * 8)))
+	    : Lo );
+}
+
+/* Return TRUE if the unsigned double cell integer LO/HI is not greater
+ * then the greatest uint64_t.
+ */
+static int UdIsUint64( ucell_t Lo, ucell_t Hi )
+{
+    return (( 2 * sizeof(ucell_t) == sizeof(uint64_t) )
+	    ? TRUE
+	    : Hi == 0 );
+}
+
 static const char *pfSelectFileModeCreate( int fam );
 static const char *pfSelectFileModeOpen( int fam );
 
@@ -732,8 +750,8 @@ DBUGX(("After Branch: IP = 0x%x\n", InsPtr ));
 /* Calculate product sign: */
                 sg = ((cell_t)(ahi ^ bhi) < 0);
 /* Take absolute values and reduce to um* */
-                if ((cell_t)ahi < 0) ahi = (ucell_t)(-ahi);
-                if ((cell_t)bhi < 0) bhi = (ucell_t)(-bhi);
+                if ((cell_t)ahi < 0) ahi = (ucell_t)(-(cell_t)ahi);
+                if ((cell_t)bhi < 0) bhi = (ucell_t)(-(cell_t)bhi);
 
 /* Break into hi and lo 16 bit parts. */
                 alo = LOWER_HALF(ahi);
@@ -1091,6 +1109,32 @@ DBUG(("XX ah,m,l = 0x%8x,%8x,%8x - qh,l = 0x%8x,%8x\n", ah,am,al, qh,ql ));
             TOS = TOS | PF_FAM_BINARY_FLAG;
             endcase;
 
+	case ID_FILE_FLUSH: /* ( fileid -- ior ) */
+	    {
+		FileStream *Stream = (FileStream *) TOS;
+		TOS = (sdFlushFile( Stream ) == 0) ? 0 : THROW_FLUSH_FILE;
+	    }
+	    endcase;
+
+	case ID_FILE_RENAME: /* ( oldName newName -- ior ) */
+	    {
+		char *New = (char *) TOS;
+		char *Old = (char *) M_POP;
+		TOS = sdRenameFile( Old, New );
+	    }
+	    endcase;
+
+	case ID_FILE_RESIZE: /* ( ud fileid -- ior ) */
+	    {
+		FileStream *File = (FileStream *) TOS;
+		ucell_t SizeHi = (ucell_t) M_POP;
+		ucell_t SizeLo = (ucell_t) M_POP;
+		TOS = ( UdIsUint64( SizeLo, SizeHi )
+			? sdResizeFile( File, UdToUint64( SizeLo, SizeHi ))
+			: THROW_RESIZE_FILE );
+	    }
+	    endcase;
+
         case ID_FILL: /* ( caddr num charval -- ) */
             {
                 register char *DstPtr;