Changeset 522 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src


Ignore:
Timestamp:
Mar 11, 2013, 3:22:21 PM (12 years ago)
Author:
aitotat@…
google:author:
aitotat@gmail.com
Message:

Changes to XTIDE Universal BIOS:

  • INT 13h stack is now at the beginning of RAMVARS.
  • RELOCATE_INT13H_STACK is now allowed only for AT builds. This saves few bytes from interrupt table when lite mode is used.
Location:
trunk/XTIDE_Universal_BIOS/Src
Files:
5 edited

Legend:

Unmodified
Added
Removed

  • trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h.asm

    r507 r522  
    5050    mov     di, ds      ; We do not want to overwrite DS and DI in stack
    5151    mov     ss, di
    52     mov     sp, [RAMVARS.wNewStackOffset]
     52    mov     sp, RAMVARS.rgbTopOfStack
    5353    lds     di, [RAMVARS.dwStackChangeDSDI]
    5454

  • trunk/XTIDE_Universal_BIOS/Src/Initialization/Interrupts.asm

    r501 r522  
    8080
    8181    mov     al, BIOS_DISK_INTERRUPT_13h         ; INT 13h interrupt vector offset
     82%ifdef RELOCATE_INT13H_STACK
     83    mov     si, Int13h_DiskFunctionsHandlerWithStackChange
     84%else
    8285    mov     si, Int13h_DiskFunctionsHandler
    83 %ifdef RELOCATE_INT13H_STACK
    84     test    BYTE [cs:ROMVARS.wFlags], FLG_ROMVARS_FULLMODE
    85     eCMOVNZ si, Int13h_DiskFunctionsHandlerWithStackChange
    8686%endif
    8787

  • trunk/XTIDE_Universal_BIOS/Src/Main.asm

    r507 r522  
    4646    ; Included .inc files
    4747    %include "AssemblyLibrary.inc"  ; Assembly Library. Must be included first!
    48     %include "ModuleDependency.inc" ; Dependency checks for optional modules
     48    %include "ModuleDependency.inc" ; Dependency checks for optional modules. Must be included second!
    4949    %include "Version.inc"
    5050    %include "ATA_ID.inc"           ; For ATA Drive Information structs

  • trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/FindDPT.asm

    r521 r522  
    116116
    117117    mul     dl
    118     add     ax, BYTE RAMVARS_size       ; Clears CF (will not overflow)
     118    add     ax, RAMVARS_size            ; Clears CF (will not overflow)
    119119
    120120    pop     dx

  • trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/RamVars.asm

    r505 r522  
    7777    mov     WORD [RAMVARS.wDrvDetectSignature], RAMVARS_DRV_DETECT_SIGNATURE
    7878    mov     WORD [RAMVARS.wSignature], RAMVARS_RAM_SIGNATURE
    79     ; Fall to .InitializeInt13hStackChangeVariables
    80 
    81 ;--------------------------------------------------------------------
    82 ; .InitializeInt13hStackChangeVariables
    83 ;   Parameters:
    84 ;       DS:     RAMVARS segment
    85 ;   Returns:
    86 ;       Nothing
    87 ;   Corrupts registers:
    88 ;       AX
    89 ;--------------------------------------------------------------------
    90 %ifdef RELOCATE_INT13H_STACK
    91 .InitializeInt13hStackChangeVariables:
    92     eMOVZX  ax, BYTE [cs:ROMVARS.bStealSize]
    93     eSHL_IM ax, 10          ; kiB to Bytes = Top of stack offset
    94     mov     [RAMVARS.wNewStackOffset], ax
    95 %endif
    96 
    9779;; There used to be a DriveXlate_Reset call here.  It isn't necessary, as we reset
    9880;; when entering the boot menu and also before transferring control at boot time and
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