Changeset 133 in xtideuniversalbios for trunk/Assembly_Library/Src/File

Timestamp:

Mar 12, 2011, 1:48:48 PM (13 years ago)

Author:

krille_n_@…

google:author:

krille_n_@hotmail.com

Message:

Size optimizations in various files in the Assembly Library. Also a very small change to a string in XTIDE_Universal_BIOS_Configurator_v2/Src/Strings.asm

Location:

trunk/Assembly_Library/Src/File

Files:

• Drive.asm (modified) (4 diffs)
• FileIO.asm (modified) (5 diffs)

trunk/Assembly_Library/Src/File/Drive.asm

@@ -1 @@
-; File name     :   Drive.asm
 ; Project name  :   Assembly Library
-; Created date  :   1.9.2010
-; Last update   :   3.9.2010
-; Author        :   Tomi Tilli
 ; Description   :   Functions for accessing drives.
 
@@ -52 +48 @@
     xor     bx, bx
     xor     ax, ax              ; Temporary use BX:AX for flags
-    xor     dx, dx              ; Start from drive 0
+    cwd                         ; Start from drive 0
     call    .CheckDriveValidityUntilCXisZero
     mov     dx, bx              ; Flags now in DX:AX
@@ -163 +159 @@
 Drive_GetDefaultToAL:
     mov     ah, GET_CURRENT_DEFAULT_DRIVE
-    int     DOS_INTERRUPT_21h
-    ret
+    SKIP2B  f   ; cmp ax, <next instruction>
+    ; Fall to Drive_SetDefaultFromDL
 
 
@@ -176 +172 @@
 ;       AH
 ;--------------------------------------------------------------------
-ALIGN JUMP_ALIGN
 Drive_SetDefaultFromDL:
     mov     ah, SELECT_DEFAULT_DRIVE
     int     DOS_INTERRUPT_21h
     ret
-    

trunk/Assembly_Library/Src/File/FileIO.asm

@@ -25 +25 @@
     xchg    si, dx
     mov     bx, ax      ; Copy file handle to BX
-    ret
-
-
-;--------------------------------------------------------------------
-; FileIO_CloseUsingHandleFromBX
-;   Parameters:
-;       BX:     File handle
-;   Returns:
-;       AX:     DOS error code if CF set
-;       CF:     Clear if file closed successfully
-;               Set if error
-;   Corrupts registers:
-;       AX
-;--------------------------------------------------------------------
-ALIGN JUMP_ALIGN
-FileIO_CloseUsingHandleFromBX:
-    mov     ah, CLOSE_FILE
-    int     DOS_INTERRUPT_21h
     ret
 
@@ -70 +52 @@
 ; File position is updated so next read will start where
 ; previous read stopped.
-; 
+;
 ; FileIO_ReadCXbytesToDSSIusingHandleFromBX
 ;   Parameters:
@@ -117 +99 @@
 ; File position is updated so next write will start where
 ; previous write stopped.
-; 
+;
 ; FileIO_WriteCXbytesFromDSSIusingHandleFromBX:
 ;   Parameters:
@@ -249 +231 @@
 
 ;--------------------------------------------------------------------
+; FileIO_CloseUsingHandleFromBX
+;   Parameters:
+;       BX:     File handle
+;   Returns:
+;       AX:     DOS error code if CF set
+;       CF:     Clear if file closed successfully
+;               Set if error
+;   Corrupts registers:
+;       AX
+;--------------------------------------------------------------------
+ALIGN JUMP_ALIGN
+FileIO_CloseUsingHandleFromBX:
+    mov     ah, CLOSE_FILE
+    SKIP2B  f   ; cmp ax, <next instruction>
+    ; Fall to FileIO_SeekFromOriginInALtoOffsetInDXAXusingHandleFromBX
+
+
+;--------------------------------------------------------------------
 ; FileIO_SeekFromOriginInALtoOffsetInDXAXusingHandleFromBX:
 ;   Parameters:
@@ -262 +262 @@
 ;       Nothing
 ;--------------------------------------------------------------------
-ALIGN JUMP_ALIGN
 FileIO_SeekFromOriginInALtoOffsetInDXAXusingHandleFromBX:
     mov     ah, SET_CURRENT_FILE_POSITION