Changeset 592 in xtideuniversalbios for trunk/Assembly_Library/Src/Util/Memory.asm


Ignore:
Timestamp:
Jun 25, 2018, 10:29:27 PM (7 years ago)
Author:
Krister Nordvall
Message:

Changes:

  • The problem with NASM in the previous revision (r591) has been fixed.
  • The colors used by the boot menu and hotkey bar can now be customized by selecting one of a number of pre-defined color themes. Suggestions for additional themes are more than welcome!
  • Large builds are now 10 KB. Small builds are still 8 KB with the exception of the Tiny build which is now 4 KB. In other words, builds are now as small as possible to make it easier to combine them with other BIOSes.
  • Added code to the library to improve drive error handling. XTIDECFG can now handle "Drive Not Ready" errors.
  • Fixed a couple of potential bugs in AtaID.asm (AtaID_GetMaxPioModeToAXandMinCycleTimeToCX); 1) ATA1.bPioMode was treated as a WORD variable. 2) ATA2.bPIOSupp was assumed to be non-zero which would result in PIO mode 3 being returned if the assumption was wrong.
  • Made the same changes in the equivalent function used by BIOSDRVS (DisplayPioModeInformationUsingAtaInfoFromDSBX in AtaInfo.asm).
  • Fixed a bug from r587 in PDC20x30.asm in PDC20x30_GetMaxPioModeToALandMinPioCycleTimeToBX.
  • Fixed a bug from r523 in XTIDECFG where Auto Configure would only set the IRQ on one IDE interface on AT-builds.
  • XTIDECFG will now restore the default settings for the "Serial port virtual device" when reselecting it in the list of device types. This makes it behave consistently for all device types.
  • The eAAM macro is now used regardless if USE_UNDOC_INTEL is defined or not because it is apparently supported on all processors including the NEC V20/V30 CPUs.
  • Renamed the EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS define to EXCLUDE_FROM_XUB.
  • Added a define to exclude unused library code from BIOSDRVS (EXCLUDE_FROM_BIOSDRVS). This makes it a lot smaller than in previous revisions.
  • All unnecessary CLD-instructions are now under a new define 'CLD_NEEDED' which is only enabled for the BIOS. It is disabled for XTIDECFG and BIOSDRVS but can be enabled if needed by adding this define to the respective makefile. This change was made because these unnecessary instructions are wasteful and should never be needed. In fact, they only serve to hide bugs (in other peoples code) which I strongly believe should be avoided. I recommend people making their own BIOSes from source to not use this define as it's extremely unlikely to be needed.
  • Updated the copyright info in SerDrive and changed an URL to point to the new site.
  • Updated the copyright info and version number in BIOSDRVS.
  • Updated the copyright info in XTIDECFG.
  • Optimizations in general.
File:
1 edited

Legend:

Unmodified
Added
Removed

  • trunk/Assembly_Library/Src/Util/Memory.asm

    r580 r592  
    2424; OPTIMIZE_STRING_OPERATION
    2525;   Parameters
    26 ;       %1:     Repeat instruction
    27 ;       %2:     String instruction without size (for example MOVS and not MOVSB or MOVSW)
     26;       %1:     String instruction without size (only MOVS and STOS is supported)
    2827;       CX:     Number of BYTEs to operate
    29 ;       DS:SI:  Ptr to source data
     28;       DS:SI:  Ptr to source data (for MOVS)
    3029;       ES:DI:  Ptr to destination
    3130;   Returns:
     31;       CF:     Cleared
     32;       CX:     Zero
    3233;       SI, DI: Updated by number of bytes operated
    3334;   Corrupts registers:
    3435;       Nothing
    3536;--------------------------------------------------------------------
    36 %macro OPTIMIZE_STRING_OPERATION 2
    37     push    cx
    38 
    39     shr     cx, 1           ; Operate with WORDs for performance
    40     jz  %%HandleRemainingByte
    41     %1      %2w
    42 %%HandleRemainingByte:
    43     jnc     SHORT %%OperationCompleted
    44     %2b
    45 
    46 ALIGN JUMP_ALIGN
    47 %%OperationCompleted:
    48     pop     cx
     37%macro OPTIMIZE_STRING_OPERATION 1
     38    shr     cx, 1
     39    rep     %1w
     40    eRCL_IM cx, 1
     41    rep     %1b
    4942%endmacro
    5043
    … …  
    5750;       ES:DI:  Ptr to destination buffer
    5851;   Returns:
     52;       CF:     Cleared
    5953;       SI, DI: Updated by number of bytes copied
    6054;   Corrupts registers:
    6155;       Nothing
    6256;--------------------------------------------------------------------
    63 %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS
     57%ifndef EXCLUDE_FROM_XUB
    6458ALIGN JUMP_ALIGN
    6559Memory_CopyCXbytesFromDSSItoESDI:
    66     OPTIMIZE_STRING_OPERATION rep, movs
     60    push    cx
     61    OPTIMIZE_STRING_OPERATION movs
     62    pop     cx
    6763    ret
    6864%endif
    … …  
    7773;       Nothing
    7874;   Corrupts registers:
    79 ;       Nothing
     75;       CX
    8076;--------------------------------------------------------------------
    8177%ifdef INCLUDE_MENU_LIBRARY
    … …  
    10298;       DI:     Updated by number of BYTEs stored
    10399;   Corrupts registers:
    104 ;       AX
     100;       AX, CX
    105101;--------------------------------------------------------------------
    106102ALIGN JUMP_ALIGN
    … …  
    118114;       DI:     Updated by number of BYTEs stored
    119115;   Corrupts registers:
    120 ;       Nothing
     116;       CX
    121117;--------------------------------------------------------------------
    122 ALIGN JUMP_ALIGN
    123118Memory_StoreCXbytesFromAccumToESDI:
    124     OPTIMIZE_STRING_OPERATION rep, stos
     119    OPTIMIZE_STRING_OPERATION stos
    125120    ret
    126121
    … …  
    135130;       AX
    136131;--------------------------------------------------------------------
    137 %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS
     132%ifndef EXCLUDE_FROM_XUB
    138133ALIGN JUMP_ALIGN
    139134Memory_ReserveCXbytesFromStackToDSSI:
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