; $Id: bootsector2-common-traprec.mac 82968 2020-02-04 10:35:17Z vboxsync $
;; @file
; Boot sector 2 - Trap Records.
;
; @note Don't forget to cinldue bootsector2-common-traprec-end.mac!
;

;
; Copyright (C) 2007-2020 Oracle Corporation
;
; This file is part of VirtualBox Open Source Edition (OSE), as
; available from http://www.virtualbox.org. This file is free software;
; you can redistribute it and/or modify it under the terms of the GNU
; General Public License (GPL) as published by the Free Software
; Foundation, in version 2 as it comes in the "COPYING" file of the
; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
;
; The contents of this file may alternatively be used under the terms
; of the Common Development and Distribution License Version 1.0
; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
; VirtualBox OSE distribution, in which case the provisions of the
; CDDL are applicable instead of those of the GPL.
;
; You may elect to license modified versions of this file under the
; terms and conditions of either the GPL or the CDDL or both.
;

%ifndef ___bootsector2_common_traprec_mac___
%define ___bootsector2_common_traprec_mac___


;*******************************************************************************
;*  Header Files                                                               *
;*******************************************************************************
%include "iprt/x86.mac"


;*******************************************************************************
;*  Defined Constants And Macros                                               *
;*******************************************************************************
;;
; The base address for the records (only important for 64-bit code
; loaded above 4GB).
; We use 0 by default so we don't create too complex expressions for YASM.
%ifndef BS2_TRAP_RECS_BASE
 %define BS2_TRAP_RECS_BASE     0
%endif

;;
; Macro to emit an trapping instruction.
;
; @param    1       The trap number (X86_XCPT_XXX).
; @param    2       The error code, 0 if none.
; @param    3+      The instruction.
;
; @sa BS2_TRAP_BRANCH_INSTR
;
%macro BS2_TRAP_INSTR 3+,
        [section .traprecs]
    istruc BS2TRAPREC
        at BS2TRAPREC.offWhere,           dd (%%trapinstr - BS2_TRAP_RECS_BASE)
        at BS2TRAPREC.offResumeAddend,    db (%%resume - %%trapinstr)
        at BS2TRAPREC.u8TrapNo,           db %1
        at BS2TRAPREC.u16ErrCd,           dw %2
    iend
        __SECT__
 %if %1 != X86_XCPT_BP
  %%trapinstr:
        %3
 %else
        %3
  %%trapinstr:
 %endif
        call    TMPL_NM_CMN(TestFailedMissingTrap_ %+ %1)
 %%resume:
%endmacro

;;
; Macro to emit an trapping instruction.
;
; @param    1       The trap number (X86_XCPT_XXX).
; @param    2       The error code, 0 if none.
; @param    3       The name of the branch label.
; @param    4+      The instruction.
;
%macro BS2_TRAP_BRANCH_INSTR 4+,
        [section .traprecs]
    istruc BS2TRAPREC
        at BS2TRAPREC.offWhere,           dd (%%trapinstr - BS2_TRAP_RECS_BASE)
        at BS2TRAPREC.offResumeAddend,    db (%%resume - %%trapinstr)
        at BS2TRAPREC.u8TrapNo,           db %1
        at BS2TRAPREC.u16ErrCd,           dw %2
    iend
        __SECT__
 %%trapinstr:
        %4
 %3:
        call    TMPL_NM_CMN(TestFailedMissingTrap_ %+ %1)
 %%resume:
%endmacro

;;
; Sets up the trap records section.
; @internal
%macro BS2_TRAP_RECS_BEGIN 0,
        [section .traprecs] ; Declared in bootsector2-common-init-code.mac
        dq 0ffffffffeeeeeeeeh
g_aTrapRecs:
        __SECT__
%endmacro

;;
; Terminates the trap records section.
; @internal
%macro BS2_TRAP_RECS_END 0,
        [section .traprecs]
g_aTrapRecsEnd:
        dq 0ddddddddcccccccch
        __SECT__
%endmacro


;;
; Macro for installing the trap records.
;
; This must be invoked prior to the traps.
;
; @uses Stack
;
%macro BS2_TRAP_RECS_INSTALL 0,
        push    sAX
        push    sDX
        push    sCX

        mov     sAX, NAME(g_aTrapRecs)
        mov     edx, NAME(g_aTrapRecsEnd) - NAME(g_aTrapRecs)
        shr     edx, BS2TRAPREC_SIZE_SHIFT
        mov     sCX, BS2_TRAP_RECS_BASE
        call    TMPL_NM_CMN(TestInstallTrapRecs)

        pop     sAX
        pop     sDX
        pop     sCX
%endmacro


;;
; Macro for uninstalling the trap records.
;
; @uses Stack
;
%macro BS2_TRAP_RECS_UNINSTALL 0,
        push    sAX
        push    sDX
        push    sCX

        xor     sAX, sAX
        xor     edx, edx
        xor     sCX, sCX
        call    TMPL_NM_CMN(TestInstallTrapRecs)

        pop     sAX
        pop     sDX
        pop     sCX
%endmacro


;
; Setup the trap record segment.
;
BS2_TRAP_RECS_BEGIN
BEGINCODELOW


;
; Instantiate code templates.
;
%ifdef BS2_INC_CMN_R86
 %define TMPL_RM
 %include "bootsector2-common-traprec-template.mac"
%endif
%ifdef BS2_INC_CMN_P16
 %define TMPL_PE16
 %include "bootsector2-common-traprec-template.mac"
%endif
%ifdef BS2_INC_CMN_P32
 %define TMPL_PE32
 %include "bootsector2-common-traprec-template.mac"
%endif
%ifdef BS2_INC_LM64
 %define TMPL_LM64
 %include "bootsector2-common-traprec-template.mac"
%endif

BEGINCODELOW

%endif