Changeset 592 in xtideuniversalbios for trunk/Assembly_Library/Inc/Math.inc


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/Inc/Math.inc

    r589 r592  
    2323    jb      %%Return            ;  If so, return
    2424    mov     %1, %2              ; Copy %2 to %1
    25 ALIGN JUMP_ALIGN
    2625%%Return:
    2726%endmacro
    … …  
    3130    jl      %%Return            ;  If so, return
    3231    mov     %1, %2              ; Copy %2 to %1
    33 ALIGN JUMP_ALIGN
    3432%%Return:
    3533%endmacro
    … …  
    5149    ja      %%Return            ;  If so, return
    5250    mov     %1, %2              ; Copy %2 to %1
    53 ALIGN JUMP_ALIGN
    5451%%Return:
    5552%endmacro
    … …  
    5956    jg      %%Return            ;  If so, return
    6057    mov     %1, %2              ; Copy %2 to %1
    61 ALIGN JUMP_ALIGN
    6258%%Return:
    6359%endmacro
    … …  
    6763; SHL_DXAX
    6864;   Parameters:
    69 ;       %1:     Number of bits to shift
     65;       %1:     Number of bits to shift. Can be (in preferred order) CX, CL or an immediate value.
    7066;   Returns:
    7167;       DX:AX   Shifted value
    … …  
    7470;--------------------------------------------------------------------
    7571%macro SHL_DXAX 1
     72%ifdef USE_386
    7673    %ifnidni %1, cx
     74        ; %1 is CL or an immediate
     75        shld    dx, ax, %1
     76        shl     ax, %1
     77    %else
     78        ; %1 is CX
     79        shld    dx, ax, cl
     80        shl     ax, cl
     81    %endif
     82%else
     83    %ifidni %1, cl
     84        ; %1 is CL
     85        xor     ch, ch
     86    %elifnidni %1, cx
     87        ; %1 is an immediate
    7788        mov     cx, %1
    7889    %endif
    … …  
    8293    eRCL_IM dx, 1
    8394    loop    .ShiftNextBit
     95%endif
    8496%endmacro
    8597
    … …  
    88100; SHR_DXAX
    89101;   Parameters:
    90 ;       %1:     Number of bits to shift
     102;       %1:     Number of bits to shift. Can be (in preferred order) CX, CL or an immediate value.
    91103;   Returns:
    92104;       DX:AX   Shifted value
    … …  
    95107;--------------------------------------------------------------------
    96108%macro SHR_DXAX 1
     109%ifdef USE_386
    97110    %ifnidni %1, cx
     111        ; %1 is CL or an immediate
     112        shrd    ax, dx, %1
     113        shr     dx, %1
     114    %else
     115        ; %1 is CX
     116        shrd    ax, dx, cl
     117        shr     dx, cl
     118    %endif
     119%else
     120    %ifidni %1, cl
     121        ; %1 is CL
     122        xor     ch, ch
     123    %elifnidni %1, cx
     124        ; %1 is an immediate
    98125        mov     cx, %1
    99126    %endif
    … …  
    103130    rcr     ax, 1
    104131    loop    .ShiftNextBit
     132%endif
    105133%endmacro
    106134
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