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x86gen.asm
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x86gen.asm
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.data?
align 16
PageTableList ListHeader <>
PageTableNode struct
Node ListNode <>
PageTableNode ends
AllocPageTable PROTO :DWORD
FreePageTable PROTO :DWORD
.code
x86_dereferencemem macro
.if argbracketed
; mov bx,ax
invoke x86_WriteByte, 066h
invoke x86_WriteWord, 0d88bh
.if argisword
; call [GetMemWord]
x86_memcpy addr call_MemGetWord, CALL_MEMGETWORD_SIZEOF
.else
; call [GetMemByte]
x86_memcpy addr call_MemGetByte, CALL_MEMGETBYTE_SIZEOF
.endif
.endif
endm
x86_getregister macro @reg:req
local @asize
@asize = @GETARGSIZE (@reg)
if @asize eq 1
; movzx eax, byte ptr @reg
invoke x86_WriteByte, 0fh
invoke x86_WriteWord, 05b6h
invoke x86_WriteDWord, addr @reg
elseif @asize eq 2
; movzx eax, word ptr @reg
invoke x86_WriteByte, 0fh
invoke x86_WriteWord, 05b7h
invoke x86_WriteDWord, addr @reg
else
.err <Invalid sized argument for x86_getregister>
endif
x86_dereferencemem
endm
align 16
farcall macro @target:req
call [_jp_&@target&]
endm
call_MemGetByte: farcall MemGetByte
and ax, 255
CALL_MEMGETBYTE_SIZEOF equ $ - call_MemGetByte
call_MemGetWord: farcall MemGetWord
CALL_MEMGETWORD_SIZEOF equ $ - call_MemGetWord
call_GetBankAtAddr: push eax
farcall GetBankAtAddr
CALL_GETBANKATADDR_SIZEOF equ $ - call_GetBankAtAddr
call_GetBankConfig: farcall GetBankConfig
CALL_GETBANKCONFIG_SIZEOF equ $ - call_GetBankConfig
.const
align 16
_jp_MemGetByte dd MemGetByte
_jp_MemGetWord dd MemGetWord
_jp_GetBankAtAddr dd GetBankAtAddr
_jp_GetBankConfig dd GetBankConfig
_jp_GetByte dd GetByte
_jp_Op7E dd Op7E
_jp_Op12 dd Op12
_jp_Op23 dd Op23
_jp_Op13 dd Op13
.code
; *****************************************************************
; turn on indirect addressing here
USEESI 1
; *****************************************************************
; memory-related
x86get_memreadaddr: .if Reg_MemoryReadEvent == MEMACCESSNONE
jmp [Reg_x86_jmpexitaddr]
.endif
movzx eax, Reg_MemoryReadAddress
X86GET_MEMREADADDR_SIZEOF = $ - x86get_memreadaddr
x86get_memreadval: .if Reg_MemoryReadEvent == MEMACCESSNONE
jmp [Reg_x86_jmpexitaddr]
.endif
movzx eax, Reg_MemoryReadValueLo
X86GET_MEMREADVAL_SIZEOF = $ - x86get_memreadval
x86get_memwriteaddr: .if Reg_MemoryWriteEvent == MEMACCESSNONE
jmp [Reg_x86_jmpexitaddr]
.endif
movzx eax, Reg_MemoryWriteAddress
X86GET_MEMWRITEADDR_SIZEOF = $ - x86get_memwriteaddr
x86get_memwriteval: .if Reg_MemoryWriteEvent == MEMACCESSNONE
jmp [Reg_x86_jmpexitaddr]
.endif
movzx eax, Reg_MemoryWriteValueLo
X86GET_MEMWRITEVAL_SIZEOF = $ - x86get_memwriteval
; =====================================================================
; this does the "=" test for MRA
; ==============================
x86test_memreadaddr: cmp ax, cx
x86test_mra_jmp1: je @F ; correct jcc gets switched
cmp Reg_WordLengthAccess, TRUE
retcc ne
xor edx, edx
test eax, BRKFLAGF_MRA
setnz dl
add ax, dx
test ecx, BRKFLAGF_MRA
setnz dl
add cx, dx
cmp ax, cx
x86test_mra_jmp2: je @F ; correct jcc gets switched
ret
@@:
X86TEST_MEMREADADDR_SIZEOF = $ - x86test_memreadaddr
x86test_mra_offset_jmp1 = x86test_mra_jmp1 - x86test_memreadaddr
x86test_mra_offset_jmp2 = x86test_mra_jmp2 - x86test_memreadaddr
; =====================================================================
; this does the "=" test for MWA
; ==============================
x86test_memwriteaddr: cmp ax, cx
x86test_mwa_jmp1: je @F ; correct jcc gets switched
cmp Reg_WordLengthAccess, TRUE
retcc ne
xor edx, edx
test eax, BRKFLAGF_MWA
setnz dl
add ax, dx
test ecx, BRKFLAGF_MWA
setnz dl
add cx, dx
cmp ax, cx
x86test_mwa_jmp2: je @F ; correct jcc gets switched
ret
@@:
X86TEST_MEMWRITEADDR_SIZEOF = $ - x86test_memwriteaddr
x86test_mwa_offset_jmp1 = x86test_mwa_jmp1 - x86test_memwriteaddr
x86test_mwa_offset_jmp2 = x86test_mwa_jmp2 - x86test_memwriteaddr
; =====================================================================
; port-related
x86get_portreadaddr: .if PortAccessType != PORT_READ
jmp [Reg_x86_jmpexitaddr]
.endif
movzx eax, PortReadAddress
X86GET_PORTREADADDR_SIZEOF = $ - x86get_portreadaddr
x86get_portreadval: .if PortAccessType != PORT_READ
jmp [Reg_x86_jmpexitaddr]
.endif
movzx eax, PortReadByte
X86GET_PORTREADVAL_SIZEOF = $ - x86get_portreadval
x86get_portwriteaddr: .if PortAccessType != PORT_WRITE
jmp [Reg_x86_jmpexitaddr]
.endif
movzx eax, PortWriteAddress
X86GET_PORTWRITEADDR_SIZEOF = $ - x86get_portwriteaddr
x86get_portwriteval: .if PortAccessType != PORT_WRITE
jmp [Reg_x86_jmpexitaddr]
.endif
movzx eax, PortWriteByte
X86GET_PORTWRITEVAL_SIZEOF = $ - x86get_portwriteval
x86get_tstatecount: mov eax, totaltstates
.if eax > 65535
mov eax, 65535
.endif
X86GET_TSTATECOUNT_SIZEOF = $ - x86get_tstatecount
; *****************************************************************
; turn off indirect addressing here
USEESI 0
; *****************************************************************
AllocPageTable proc uses esi,
pagesize: DWORD
mov eax, pagesize
add eax, sizeof PageTableNode
.if $fnc (VirtualAlloc, NULL, eax, MEM_RESERVE or MEM_COMMIT, PAGE_EXECUTE_READWRITE) != NULL
mov esi, eax
AddTail offset PageTableList, esi
mov eax, esi
add eax, PageTableNode
.endif
ret
AllocPageTable endp
FreePageTable proc uses esi,
lpPageTable: DWORD
mov esi, lpPageTable
sub esi, sizeof PageTableNode
; as the node lives at the start of the memory block,
; we have to remove the node from the list before freeing
invoke RemoveNode, esi
invoke VirtualFree, esi, 0, MEM_RELEASE
ret
FreePageTable endp
FreePageTableList proc uses esi edi
lea esi, PageTableList
.while TRUE
.break .if $fnc (IsListEmpty, esi)
mov edi, [esi].ListHeader.lh_Head
add edi, sizeof PageTableNode
invoke FreePageTable, edi
.endw
ret
FreePageTableList endp
.data?
align 4
pBreakpointCodePage dd ?
.code
x86_Breakpoint proc uses esi edi ebx
.if $fnc (AllocPageTable, 4096) != NULL
mov pBreakpointCodePage, eax
.else
mov pBreakpointCodePage, 0
.endif
ret
x86_Breakpoint endp
RESETENUM
ENUM BRKARGTYPE_NONE
ENUM BRKARGTYPE_ERROR
ENUM BRKARGTYPE_NUMERIC
ENUM BRKARGTYPE_STRING
ENUM BRKARGTYPE_OPERATOR
.data?
align 4
pCodePageWriteAddr dd ?
.code
x86_SetOrigin proc lpOrgAddress: DWORD
mov eax, lpOrgAddress
mov pCodePageWriteAddr, eax
ret
x86_SetOrigin endp
x86_memcpy macro pbytes:req, count:req
mov eax, count
invoke x86_MemCpy, pbytes, eax ; invoke bug? count needs passing in a register here else it takes the wrong value
endm
x86_MemCpy proc uses esi,
pBytes: DWORD,
cnt: DWORD
mov esi, pBytes
.while cnt > 0
dec cnt
lodsb
invoke x86_WriteByte, al
.endw
ret
x86_MemCpy endp
x86_WriteByte proc uses ecx,
data: BYTE
mov ecx, pCodePageWriteAddr
inc pCodePageWriteAddr
mov al, data
mov [ecx], al
ret
x86_WriteByte endp
x86_WriteWord proc uses ecx,
data: WORD
mov ecx, pCodePageWriteAddr
add pCodePageWriteAddr, 2
mov ax, data
mov [ecx], ax
ret
x86_WriteWord endp
x86_WriteDWord proc uses ecx,
data: DWORD
mov ecx, pCodePageWriteAddr
add pCodePageWriteAddr, 4
mov eax, data
mov [ecx], eax
ret
x86_WriteDWord endp
FETCHCHAR macro
call FetchBreakChar
endm
FetchBreakChar: lodsb
cmp al, " "
je FetchBreakChar
cmp al, 9
je FetchBreakChar
ret
DecodeBreakArg: FETCHCHAR
ifc al eq 0 then return BRKARGTYPE_NONE
switch al
case "0".."9"
; decimal numeric
dec esi ; back to first digit for decimal numeric
xor ecx, ecx
xor ebx, ebx ; valid characters count
.while TRUE
lodsb
switch al
case "0".."9"
inc ebx
and eax, 255
sub eax, "0"
lea ecx, [ecx*4+ecx]
add ecx, ecx
add ecx, eax
.else
dec esi
ifc ebx eq 0 then return BRKARGTYPE_ERROR
mov [edi], ecx
return BRKARGTYPE_NUMERIC
endsw
.endw
case "#", "$"
; hexadecimal numeric
xor ecx, ecx
xor ebx, ebx ; valid characters count
.while TRUE
lodsb
TOUPPER
switch al
case "0".."9", "A".."F"
inc ebx
and eax, 255
sub eax, "0"
ifc eax gt 9 then sub eax, 7
shl ecx, 4
add ecx, eax
.else
dec esi
ifc ebx eq 0 then return BRKARGTYPE_ERROR
mov [edi], ecx
return BRKARGTYPE_NUMERIC
endsw
.endw
case "%"
; binary numeric
xor ecx, ecx
xor ebx, ebx ; valid characters count
.while TRUE
lodsb
switch al
case "0".."1"
inc ebx
and eax, 255
sub eax, "0"
shl ecx, 1
add ecx, eax
.else
dec esi
ifc ebx eq 0 then return BRKARGTYPE_ERROR
mov [edi], ecx
return BRKARGTYPE_NUMERIC
endsw
.endw
case "A".."Z", "a".."z" ; strings can only begin with a letter
; string
dec esi ; back to first character of string
xor ebx, ebx ; valid characters count (string length here)
.while TRUE
lodsb
TOUPPER
switch al
case "A".."Z", "0".."9", "'", "_" ; need "'" char for specifying alt register names
mov [edi+ebx], al
inc ebx
.else
mov byte ptr [edi+ebx], 0
dec esi
ifc ebx eq 0 then return BRKARGTYPE_ERROR
return BRKARGTYPE_STRING
endsw
.endw
case "=", 21h, 3ch, 3eh ; "=", "!", "<", ">"
; relational (type: string)
dec esi ; back to first character of string
xor ebx, ebx ; valid characters count (string length here)
.while TRUE
lodsb
switch al
case "=", 21h, 3ch, 3eh ; "=", "!", "<", ">"
mov [edi+ebx], al
inc ebx
.else
mov byte ptr [edi+ebx], 0
dec esi
ifc ebx eq 0 then return BRKARGTYPE_ERROR
return BRKARGTYPE_OPERATOR
endsw
.endw
endsw
return BRKARGTYPE_ERROR
; Bit flags in the register arguments themselves (upper 16 bits only)
BITDEF BRKFLAG, MRA, 31 ; marks this argument register as a memory read address argument
BITDEF BRKFLAG, MWA, 30 ; marks this argument register as a memory write address argument
CompileBreakpointCode proc uses esi edi ebx,
lpbreakstr: PTR
local expectbracket, argbracketed: BOOL
local argisword: BOOL
local x86pass: DWORD
local breakargtype: DWORD
local argfunction: DWORD
local operatortype: DWORD
local temp1: DWORD
local x86jcc: BYTE
local bitwisechar: BYTE
local breakpointstring [1024]: BYTE
local thisbreakarg [1024]: BYTE
local thisbitwisearg [1024]: BYTE
ADDMESSAGEPTR_DBG lpbreakstr
invoke x86_SetOrigin, pBreakpointCodePage
invoke x86_WriteWord, 0e783h ; and edi, nn
invoke x86_WriteByte, 0 ; nn = 0 (edi == False)
push pCodePageWriteAddr
invoke x86_WriteByte, 0c3h ; retn
pop pCodePageWriteAddr
.if len (lpbreakstr) >= sizeof breakpointstring - 4
ADDMESSAGE_DBG "Breakpoint string too long"
return FALSE
.endif
; take a copy of the break arg string
mov esi, lpbreakstr
lea edi, breakpointstring
@@: lodsb
stosb
or al, al
jnz @B
; add more null terminators to save on persistent checking
mov dword ptr [edi], 0
mov dword ptr [edi+4], 0
lea esi, breakpointstring
mov x86pass, 0
; clear the operator type; this is re-cleared after each cmp iteration in the main loop
mov operatortype, 0
.while TRUE
mov eax, x86pass
inc eax
and eax, 3
cmp eax, 1
adc eax, 0
mov x86pass, eax ; 1-3
mov expectbracket, FALSE
mov argbracketed, FALSE
mov argisword, FALSE
RESETENUM
ENUM ARGFNC_NONE
ENUM ARGFNC_ONLYHIGH, ARGFNC_ONLYLOW
mov argfunction, ARGFNC_NONE
@@: FETCHCHAR
switch al
case 0
.break
case "("
inc esi
mov expectbracket, TRUE
endsw
; INT3
; add ax, 32768
; or ax, 32710
; movzx eax, z80registers.hl.w
dec esi
lea edi, thisbreakarg
call DecodeBreakArg
mov breakargtype, eax ; store argument type return code
; except for BRKARGTYPE_OPERATOR operators (=, !=, <, etc), check if argument is followed by ".h" or ".l"
; being careful how we handle the current character pointer (esi)
.if breakargtype != BRKARGTYPE_OPERATOR
mov temp1, esi
FETCHCHAR
.if al == "."
FETCHCHAR
TOUPPER
.if al == "H"
mov argfunction, ARGFNC_ONLYHIGH
mov temp1, esi
.elseif al == "L"
mov argfunction, ARGFNC_ONLYLOW
mov temp1, esi
.endif
.endif
mov esi, temp1
.endif
; check for closing bracket if opening bracket was present
; being sure to check for ".w" word sized argument specifier within the brackets first
.if expectbracket
FETCHCHAR
.if al == "."
FETCHCHAR
TOUPPER
.if al == "W"
mov argisword, TRUE
FETCHCHAR ; to check for closing bracket
.else
return FALSE
.endif
.endif
.if al != ")"
return FALSE
.endif
mov expectbracket, FALSE
mov argbracketed, TRUE
.endif
; ===========================================================================
; move on to evaluating the argument based on return code from DecodeBreakArg
; ===========================================================================
; note: when loading all types of initial arguments into eax, be sure to extend to eax, clearing all bits.
; BRKFLAG flag bits may be set in upper 16 bits for certain types of arguments
switch breakargtype
case BRKARGTYPE_NONE
ADDMESSAGE_DBG "BRKARGTYPE_NONE"
case BRKARGTYPE_ERROR
return FALSE
case BRKARGTYPE_NUMERIC
; ADDMESSAGEDEC_DBG "Cond Numeric: ", dword ptr [edi]
switch x86pass
case 1, 3
; arg to eax
; mov eax, nnnn
invoke x86_WriteByte, 0b8h
mov eax, [edi]
ifc eax gt 65535 then return FALSE
invoke x86_WriteDWord, eax
x86_dereferencemem
.else
return FALSE
endsw
case BRKARGTYPE_STRING
switch x86pass
case 1, 3
switch$ edi
case$ "AF"
x86_getregister z80registers.af
case$ "A"
x86_getregister z80registers.af.hi
case$ "F"
x86_getregister z80registers.af.lo
case$ "AF'"
x86_getregister z80registers.af_
case$ "A'"
x86_getregister z80registers.af_.hi
case$ "F'"
x86_getregister z80registers.af_.lo
case$ "BC"
x86_getregister z80registers.bc
case$ "B"
x86_getregister z80registers.bc.hi
case$ "C"
x86_getregister z80registers.bc.lo
case$ "BC'"
x86_getregister z80registers.bc_
case$ "B'"
x86_getregister z80registers.bc_.hi
case$ "C'"
x86_getregister z80registers.bc_.lo
case$ "DE"
x86_getregister z80registers.de
case$ "D"
x86_getregister z80registers.de.hi
case$ "E"
x86_getregister z80registers.de.lo
case$ "DE'"
x86_getregister z80registers.de_
case$ "D'"
x86_getregister z80registers.de_.hi
case$ "E'"
x86_getregister z80registers.de_.lo
case$ "HL"
x86_getregister z80registers.hl
case$ "H"
x86_getregister z80registers.hl.hi
case$ "L"
x86_getregister z80registers.hl.lo
case$ "HL'"
x86_getregister z80registers.hl_
case$ "H'"
x86_getregister z80registers.hl_.hi
case$ "L'"
x86_getregister z80registers.hl_.lo
case$ "IX"
x86_getregister z80registers.ix
case$ "IXH"
x86_getregister z80registers.ix.hi
case$ "IXL"
x86_getregister z80registers.ix.lo
case$ "IY"
x86_getregister z80registers.iy
case$ "IYH"
x86_getregister z80registers.iy.hi
case$ "IYL"
x86_getregister z80registers.iy.lo
case$ "MPTR"
x86_getregister z80registers.memptr
case$ "IR"
; xor eax, eax
invoke x86_WriteWord, 0c033h
; mov ah, byte ptr z80registers.i
invoke x86_WriteWord, 258ah
invoke x86_WriteDWord, addr z80registers.i
; mov al, byte ptr z80registers.r
invoke x86_WriteByte, 0a0h
invoke x86_WriteDWord, addr z80registers.r
; and al, 7fh
invoke x86_WriteWord, 7f24h
; or al, byte ptr z80registers.r_msb
invoke x86_WriteWord, 050ah
invoke x86_WriteDWord, addr z80registers.r_msb
x86_dereferencemem
case$ "I"
x86_getregister z80registers.i
case$ "R"
; movzx eax, z80registers.r
invoke x86_WriteByte, 0fh
invoke x86_WriteWord, 05b6h
invoke x86_WriteDWord, addr z80registers.r
; and al, 7fh
invoke x86_WriteWord, 7f24h
; or al, byte ptr z80registers.r_msb
invoke x86_WriteWord, 050ah
invoke x86_WriteDWord, addr z80registers.r_msb
x86_dereferencemem
case$ "IM"
x86_getregister z80registers.intmode
case$ "IFF1"
x86_getregister z80registers.iff1
case$ "IFF2"
x86_getregister z80registers.iff2
case$ "SP"
x86_getregister z80registers._sp
case$ "PC"
x86_getregister z80registers.pc
case$ "MRA"
or operatortype, BRKFLAGF_MRA
x86_memcpy addr x86get_memreadaddr, X86GET_MEMREADADDR_SIZEOF
; mark this argument as the one with the MRA value (would be in eax or ecx when testing)
; or eax, BRKFLAGF_MRA
invoke x86_WriteByte, 0dh
invoke x86_WriteDWord, BRKFLAGF_MRA
case$ "MRV"
x86_memcpy addr x86get_memreadval, X86GET_MEMREADVAL_SIZEOF
case$ "MWA"
or operatortype, BRKFLAGF_MWA
x86_memcpy addr x86get_memwriteaddr, X86GET_MEMWRITEADDR_SIZEOF
; mark this argument as the one with the MWA value (would be in eax or ecx when testing)
; or eax, BRKFLAGF_MWA
invoke x86_WriteByte, 0dh
invoke x86_WriteDWord, BRKFLAGF_MWA
case$ "MWV"
x86_memcpy addr x86get_memwriteval, X86GET_MEMWRITEVAL_SIZEOF
case$ "PRA"
x86_memcpy addr x86get_portreadaddr, X86GET_PORTREADADDR_SIZEOF
case$ "IN"
x86_memcpy addr x86get_portreadaddr, X86GET_PORTREADADDR_SIZEOF
case$ "PRV"
x86_memcpy addr x86get_portreadval, X86GET_PORTREADVAL_SIZEOF
case$ "PWA"
x86_memcpy addr x86get_portwriteaddr, X86GET_PORTWRITEADDR_SIZEOF
case$ "OUT"
x86_memcpy addr x86get_portwriteaddr, X86GET_PORTWRITEADDR_SIZEOF
case$ "PWV"
x86_memcpy addr x86get_portwriteval, X86GET_PORTWRITEVAL_SIZEOF
case$ "P0"
; xor eax, eax
invoke x86_WriteWord, 0c033h
x86_memcpy addr call_GetBankAtAddr, CALL_GETBANKATADDR_SIZEOF
case$ "P1"
; mov eax, nnnn
invoke x86_WriteByte, 0b8h
invoke x86_WriteDWord, 16384
x86_memcpy addr call_GetBankAtAddr, CALL_GETBANKATADDR_SIZEOF
case$ "P2"
; mov eax, nnnn
invoke x86_WriteByte, 0b8h
invoke x86_WriteDWord, 32768
x86_memcpy addr call_GetBankAtAddr, CALL_GETBANKATADDR_SIZEOF
case$ "P3"
; mov eax, nnnn
invoke x86_WriteByte, 0b8h
invoke x86_WriteDWord, 49152
x86_memcpy addr call_GetBankAtAddr, CALL_GETBANKATADDR_SIZEOF
case$ "TS"
x86_memcpy addr x86get_tstatecount, X86GET_TSTATECOUNT_SIZEOF
case$ "PAGING"
x86_memcpy addr call_GetBankConfig, CALL_GETBANKCONFIG_SIZEOF
case$ "SNOW"
; movzx eax, SPGfx.SnowEffect
invoke x86_WriteByte, 0fh
invoke x86_WriteWord, 05b6h
invoke x86_WriteDWord, addr SPGfx.SnowEffect
case$ "SCREEN"
; movzx eax, SPGfx.CurrScreen
invoke x86_WriteByte, 0fh
invoke x86_WriteWord, 05b6h
invoke x86_WriteDWord, addr SPGfx.CurrScreen
case$ "BORDER"
; movzx eax, Last_FE_Write
invoke x86_WriteByte, 0fh
invoke x86_WriteWord, 05b6h
invoke x86_WriteDWord, addr Last_FE_Write
; and al, 7
invoke x86_WriteWord, 0724h
_x86flag macro fMask:req
invoke x86_WriteWord, 0c033h ; xor eax, eax
invoke x86_WriteWord, 05f6h ; test byte ptr z80registers.af.lo, fMask
invoke x86_WriteDWord, addr z80registers.af.lo
invoke x86_WriteByte, fMask
invoke x86_WriteWord, 950fh ; setnz al
invoke x86_WriteByte, 0c0h
endm
case$ "FS"
_x86flag FLAG_S
case$ "FZ"
_x86flag FLAG_Z
case$ "F5"
_x86flag FLAG_5
case$ "FH"
_x86flag FLAG_H
case$ "F3"
_x86flag FLAG_3
case$ "FV"
_x86flag FLAG_V
case$ "FP"
_x86flag FLAG_P
case$ "FN"
_x86flag FLAG_N
case$ "FC"
_x86flag FLAG_C
else$
return FALSE
endsw$
endsw
case BRKARGTYPE_OPERATOR
switch x86pass
case 2
; INT3
switch word ptr [edi]
; set the jcc opcode each relational operator
case "="
mov x86jcc, 74h ; je @F ; =
_jcc_ = 21h or ("=" shl 8) ; !=
case _jcc_
mov x86jcc, 75h ; jne @F
_jcc_ = 3ch or (3eh shl 8) ; <>
case _jcc_
mov x86jcc, 75h ; jne @F
_jcc_ = 3ch ; <
case _jcc_
mov x86jcc, 72h ; jb @F
_jcc_ = 3ch or ("=" shl 8) ; <=
case _jcc_
mov x86jcc, 76h ; jbe @F
_jcc_ = 3eh ; >
case _jcc_
mov x86jcc, 77h ; ja @F
_jcc_ = 3eh or ("=" shl 8) ; >=
case _jcc_
mov x86jcc, 73h ; jae @F
.else
return FALSE
endsw
endsw
endsw
; modify the eax argument if indicated for high byte or low byte only comparisons
; these argfunction values were excluded above for BRKARGTYPE_OPERATOR
switch argfunction
case ARGFNC_ONLYHIGH
invoke x86_WriteDWord, 08e8c166h ; shr ax, 8
case ARGFNC_ONLYLOW
invoke x86_WriteDWord, 00ff2566h ; and ax, ffh
endsw
; except for BRKARGTYPE_OPERATOR operators (=, !=, <, etc), check if argument is followed by bitwise operators for the current argument
; being careful how we handle the current character pointer (esi)
.if breakargtype != BRKARGTYPE_OPERATOR
mov temp1, esi
@@: FETCHCHAR
.if (al == "&") || (al == "|") || (al == "^") || (al == "+") || (al == "-")
mov bitwisechar, al
lea edi, thisbitwisearg ;thisbreakarg
call DecodeBreakArg
switch eax
case BRKARGTYPE_NUMERIC
mov temp1, esi ; update current character pointer
mov eax, [edi]
.if bitwisechar == "&"
; and ax, nn
invoke x86_WriteWord, 2566h
mov eax, [edi]
ifc eax gt 65535 then return FALSE
invoke x86_WriteWord, ax
jmp @B
.elseif bitwisechar == "|"
; or ax, nn
invoke x86_WriteWord, 0d66h
mov eax, [edi]
ifc eax gt 65535 then return FALSE
invoke x86_WriteWord, ax
jmp @B
.elseif bitwisechar == "^"
; or ax, nn
invoke x86_WriteWord, 3566h
mov eax, [edi]
ifc eax gt 65535 then return FALSE
invoke x86_WriteWord, ax
jmp @B
.elseif bitwisechar == "+"
; add ax, nn
invoke x86_WriteWord, 0566h
mov eax, [edi]
ifc eax gt 65535 then return FALSE
invoke x86_WriteWord, ax
jmp @B
.elseif bitwisechar == "-"
; sub ax, nn
invoke x86_WriteWord, 2d66h
mov eax, [edi]
ifc eax gt 65535 then return FALSE
invoke x86_WriteWord, ax
jmp @B
.else