;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; DISASSEMBLER ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; TODO: prepare to work independently from debugger
;-----------------------------------------------------------------------------
; Read next byte for disassembly
;
; out: AL = byte
disasm_get_byte:
push ecx
mov ecx, [disasm_cur_pos]
sub ecx, [disasm_start_pos]
cmp ecx, [disasm_buf_size]
jae disasm_err
mov al, [disasm_buffer+ecx]
pop ecx
inc [disasm_cur_pos]
ret
;-----------------------------------------------------------------------------
; Read next word for disassembly
;
; out: AX = word
disasm_get_word:
push ecx
mov ecx, [disasm_cur_pos]
sub ecx, [disasm_start_pos]
inc ecx
cmp ecx, [disasm_buf_size]
jae disasm_err
mov ax, word [disasm_buffer-1+ecx]
pop ecx
add [disasm_cur_pos], 2
ret
;-----------------------------------------------------------------------------
; Read next dword for disassembly
;
; out: EAX = dword
disasm_get_dword:
push ecx
mov ecx, [disasm_cur_pos]
sub ecx, [disasm_start_pos]
add ecx, 3
cmp ecx, [disasm_buf_size]
jae disasm_err
mov eax, dword [disasm_buffer-3+ecx]
pop ecx
add [disasm_cur_pos], 4
ret
;-----------------------------------------------------------------------------
disasm_err:
mov esp, ebp
; TODO: make it local?
stc_ret:
stc
ret
;-----------------------------------------------------------------------------
; Exit from disassembly loop
disasm_ret:
mov esp, ebp
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
; Disassembly one instruction
;
; Read data, in loop, to read multibyte instruction opcodes
disasm_instr:
mov ebp, esp
cmp [debuggee_pid], 0
jz stc_ret
mov edi, disasm_string
xor ecx, ecx
; TODO: make it local?
; ecx=flags (IN or OUT?)
disasm_loop1:
xor eax, eax
call disasm_get_byte
jmp dword [disasm_table_1 + eax*4]
;-----------------------------------------------------------------------------
cop0:
clock:
csegcs:
csegds:
cseges:
csegss:
csegfs:
cseggs:
mov esi, cmd1
iglobal
cmd1:
db 0x2E,3,'cs:'
db 0x36,3,'ss:'
db 0x3E,3,'ds:'
db 0x26,3,'es:'
db 0x64,3,'fs:'
db 0x65,3,'gs:'
db 0x06,10,'push es'
db 0x07,10,'pop es'
db 0x0E,10,'push cs'
db 0x16,10,'push ss'
db 0x17,10,'pop ss'
db 0x1E,10,'push ds'
db 0x1F,10,'pop ds'
db 0x27,3,'daa'
db 0x2F,3,'das'
db 0x37,3,'aaa'
db 0x3F,3,'aas'
db 0x60,6,0,'pusha'
db 0x61,5,0,'popa'
db 0x90,3,'nop'
db 0x9B,5,'fwait'
db 0x9C,6,0,'pushf'
db 0x9D,5,0,'popf'
db 0x9E,4,'sahf'
db 0x9F,4,'lahf'
db 0xA4,5,'movsb'
db 0xA5,5,0,'movs'
db 0xA6,5,'cmpsb'
db 0xA7,5,0,'cmps'
db 0xAA,5,'stosb'
db 0xAB,5,0,'stos'
db 0xAC,5,'lodsb'
db 0xAD,5,0,'lods'
db 0xAE,5,'scasb'
db 0xAF,5,0,'scas'
db 0xC3,3,'ret'
db 0xC9,5,'leave'
db 0xCC,4,'int3'
db 0xF0,4,'lock'
db 0xF5,3,'cmc'
db 0xF8,3,'clc'
db 0xF9,3,'stc'
db 0xFA,3,'cli'
db 0xFB,3,'sti'
db 0xFC,3,'cld'
db 0xFD,3,'std'
cmd2:
db 0x05,7,'syscall'
db 0x06,4,'clts'
db 0x31,5,'rdtsc'
db 0x34,8,'sysenter'
db 0xA2,5,'cpuid'
db 0x77,4,'emms'
endg
jmp @f
;-----------------------------------------------------------------------------
ccpuid:
crdtsc:
cemms:
cop0_F:
mov esi, cmd2
@@:
cmp al, [esi]
jz .found
inc esi
movzx edx, byte [esi]
inc esi
add esi, edx
jmp @b
.found:
inc esi
lodsb
cmp byte [esi], 0
jz @f
movzx ecx, al
disasm_1:
rep movsb
and byte [edi], 0
ret
@@:
mov dl, ch
movzx ecx, al
dec ecx
inc esi
rep movsb
test dl, 1
mov al, 'w'
jnz @f
mov al, 'd'
@@:
stosb
and byte [edi], 0
ret
c67:
or ch, 2
jmp disasm_loop1
c66:
or ch, 1
jmp disasm_loop1
;-----------------------------------------------------------------------------
cxlat:
cunk:
cerr:
mov eax, '???'
stosd
clc
ret
cF:
call disasm_get_byte
jmp dword [disasm_table_2 + eax*4]
;-----------------------------------------------------------------------------
; Parse operand prefixes
crep:
push [disasm_cur_pos]
call disasm_get_byte
cmp al, 0x0F
jz .sse
mov dl, al
mov eax, 'rep '
stosd
mov al, dl
@@:
and eax, not 1
cmp al, 0x66
jnz @f
call disasm_get_byte
mov dl, al
jmp @b
@@:
cmp al, 0xA6
jz .repz
cmp al, 0xAE
jz .repz
cmp al, 0xA4
jz .prefix
cmp al, 0xAA
jz .prefix
cmp al, 0xAC
jz .prefix
cmp al, 0x6C
jz .prefix
cmp al, 0x6E
jz .prefix
pop [disasm_cur_pos]
.noprefix:
and byte [edi-1], 0
ret
.repz:
mov byte [edi-1], 'z'
mov al, ' '
stosb
.prefix:
pop [disasm_cur_pos]
jmp disasm_loop1
.sse:
pop eax
call disasm_get_byte
;-----------------------------------------------------------------------------
iglobal
rep_sse_cmds:
db 0x58,3,'add'
db 0xC2,3,'cmp'
db 0,0
endg
mov esi, rep_sse_cmds+1
@@:
movzx edx, byte [esi]
cmp al, [esi-1]
jz @f
lea esi, [esi+edx+2]
cmp byte [esi], 0
jnz @b
sub [disasm_cur_pos], 2
mov eax, 'rep'
stosd
ret
@@:
push ecx
mov ecx, edx
inc esi
rep movsb
pop ecx
mov al, 's'
stosb
jmp rep_sse_final
;-----------------------------------------------------------------------------
crepnz:
call disasm_get_byte
cmp al, 0x0F
jz .sse
mov dl, al
mov eax, 'repn'
stosd
mov al, 'z'
stosb
mov al, ' '
stosb
movzx eax, dl
cmp al, 66h
je c66
cmp al, 67h
je c67
cmp al, 0x6C
jb crep.noprefix
cmp al, 0x6F
jbe .prefix
cmp al, 0xA4
jb crep.noprefix
cmp al, 0xA7
jbe .prefix
cmp al, 0xAA
jb crep.noprefix
cmp al, 0xAF
ja crep.noprefix
.prefix:
jmp cop0
.sse:
call disasm_get_byte
mov esi, rep_sse_cmds+1
@@:
movzx edx, byte [esi]
cmp al, [esi-1]
jz .found0
lea esi, [esi+edx+2]
cmp byte [esi], 0
jnz @b
mov esi, sse_cmds2+1
@@:
movzx edx, byte [esi]
cmp al, [esi-1]
jz .found1
lea esi, [esi+edx+2]
cmp byte [esi], 0
jnz @b
sub [disasm_cur_pos], 2
mov eax, 'repn'
stosd
mov al, 'z'
stosb
and byte [edi], 0
ret
.found0:
push ecx
mov ecx, edx
inc esi
rep movsb
pop ecx
mov al, 's'
stosb
mov al, 'd'
jmp rep_sse_final
.found1:
push ecx
mov ecx, edx
inc esi
rep movsb
pop ecx
mov al, 'p'
stosb
mov al, 's'
rep_sse_final:
stosb
push ecx
push 5
pop ecx
sub ecx, edx
adc ecx, 1
mov al, ' '
rep stosb
pop ecx
or ch, 1
jmp disasm_mmx1
;-----------------------------------------------------------------------------
macro disasm_set_modew
{
test al, 1
jz @f
or ch, 80h
@@:
}
;-----------------------------------------------------------------------------
cmov2:
disasm_set_modew
; mov r/m,i
call disasm_get_byte
dec [disasm_cur_pos]
test al, 00111000b
jnz cunk
mov eax, 'mov '
stosd
mov eax, ' '
stosd
call disasm_readrmop
mov ax, ', '
stosw
xor eax, eax
test ch, 80h
jnz .1
call disasm_get_byte
jmp .3
.1:
test ch, 1
jnz .2
call disasm_get_dword
jmp .3
.2:
call disasm_get_word
.3:
call disasm_write_num
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
cret2:
mov eax, 'ret '
stosd
mov eax, ' '
stosd
xor eax, eax
jmp cmov2.2
;-----------------------------------------------------------------------------
disasm_write_num:
push esi
cmp eax, 0x80
jl .nosymb
lea esi, [eax-1]
test eax, esi
jz .nosymb
call find_symbol
jc .nosymb
@@:
lodsb
test al, al
jz @f
stosb
jmp @b
@@:
pop esi
ret
.nosymb:
pop esi
push ecx eax
inc edi
@@:
mov ecx, eax
shr eax, 4
jz @f
inc edi
jmp @b
@@:
pop eax
cmp ecx, 10
jb @f
inc edi
@@:
push edi eax
@@:
mov ecx, eax
and al, 0xF
cmp al, 10
sbb al, 69h
das
dec edi
mov [edi], al
mov eax, ecx
shr eax, 4
jnz @b
cmp ecx, 10
jb @f
mov byte [edi-1], '0'
@@:
pop eax edi ecx
cmp eax, 10
jb @f
mov byte [edi], 'h'
inc edi
@@:
ret
;-----------------------------------------------------------------------------
iglobal
label disasm_regs32 dword
label disasm_regs dword
db 'eax',0
db 'ecx',0
db 'edx',0
db 'ebx',0
db 'esp',0
db 'ebp',0
db 'esi',0
db 'edi',0
disasm_regs16 dw 'ax','cx','dx','bx','sp','bp','si','di'
disasm_regs8 dw 'al','cl','dl','bl','ah','ch','dh','bh'
disasm_scale db '1248'
endg
;-----------------------------------------------------------------------------
disasm_readrmop:
call disasm_get_byte
test ch, 40h
jnz .skip_size
push eax
and al, 0xC0
cmp al, 0xC0
pop eax
jz .skip_size
test ch, 80h
jz .byte
test ch, 1
jnz .word
mov dword [edi], 'dwor'
mov byte [edi+4], 'd'
inc edi
jmp @f
.byte:
test ch, 20h
jz .qb
mov byte [edi], 't'
inc edi
.qb:
mov dword [edi], 'byte'
jmp @f
.word:
test ch, 20h
jz .qw
mov byte [edi], 'q'
inc edi
.qw:
mov dword [edi], 'word'
@@:
mov byte [edi+4], ' '
add edi, 5
.skip_size:
test ch, 2
jnz disasm_readrmop16
push ecx
movzx ecx, al
and eax, 7
shr ecx, 6
jz .vmod0
jp .vmod3
mov byte [edi], '['
inc edi
cmp al, 4
jz .sib1
mov eax, [disasm_regs+eax*4]
stosd
dec edi
jmp @f
.sib1:
call .parse_sib
@@:
mov al, '+'
stosb
dec ecx
jz .vmod1
call disasm_get_dword
jmp @f
.vmod1:
call disasm_get_byte
movsx eax, al
@@:
test eax, eax
jns .2
neg eax
mov byte [edi-1], '-'
.2:
call disasm_write_num
.2a:
mov al, ']'
stosb
pop ecx
ret
.vmod3:
pop ecx
test ch, 10h
jnz .vmod3_mmi
test ch, 80h
jz .vmod3_byte
test ch, 1
jnz .vmod3_word
test ch, 20h
jnz .vmod3_sti
mov eax, [disasm_regs32+eax*4]
stosd
dec edi
ret
.vmod3_byte:
mov ax, [disasm_regs8+eax*2]
@@:
stosw
ret
.vmod3_word:
mov ax, [disasm_regs16+eax*2]
jmp @b
.vmod3_sti:
mov word [edi], 'st'
add al, '0'
mov byte [edi+2], al
add edi, 3
ret
.vmod3_mmi:
disasm_write_mmreg = $
test ch, 1
jz @f
mov byte [edi], 'x'
inc edi
@@:
mov word [edi], 'mm'
add al, '0'
mov byte [edi+2], al
add edi, 3
ret
.vmod0:
mov byte [edi], '['
inc edi
cmp al, 4
jz .sib2
cmp al, 5
jz .ofs32
mov eax, [disasm_regs+eax*4]
stosd
mov byte [edi-1], ']'
pop ecx
ret
.ofs32:
call disasm_get_dword
jmp .2
.sib2:
call .parse_sib
mov al, ']'
stosb
pop ecx
ret
.parse_sib:
call disasm_get_byte
push edx
mov dl, al
mov dh, 0
and eax, 7
cmp al, 5
jnz @f
jecxz .sib0
@@:
mov eax, [disasm_regs+eax*4]
stosd
dec edi
mov dh, 1
.sib0:
mov al, dl
shr eax, 3
and eax, 7
cmp al, 4
jz .sibret
test dh, dh
jz @f
mov byte [edi], '+'
inc edi
@@:
mov eax, [disasm_regs+eax*4]
stosd
dec edi
shr dl, 6
jz @f
mov al, '*'
stosb
movzx eax, dl
mov al, [disasm_scale+eax]
stosb
@@:
.sibret:
test dh, dh
jnz .sibret2
call disasm_get_dword
cmp byte [edi-1], '['
jz @f
mov byte [edi], '+'
test eax, eax
jns .sibns
neg eax
mov byte [edi], '-'
.sibns:
inc edi
@@:
call disasm_write_num
.sibret2:
pop edx
ret
;-----------------------------------------------------------------------------
iglobal
disasm_rm16_1 dd 'bxsi','bxdi','bpsi','bpdi'
disasm_rm16_2 dw 'si','di','bp','bx'
endg
;-----------------------------------------------------------------------------
disasm_readrmop16:
push ecx
movzx ecx, al
and eax, 7
shr ecx, 6
jz .vmod0
jp disasm_readrmop.vmod3 ; mod=3 is the same in 16- and 32-bit code
; 1 or 2
mov byte [edi], '['
inc edi
cmp al, 4
jae @f
mov eax, [disasm_rm16_1+eax*4]
stosw
mov al, '+'
stosb
shr eax, 16
jmp .1
@@:
mov eax, dword [disasm_rm16_2+eax*2-4*2]
.1:
stosw
mov al, '+'
stosb
xor eax, eax
dec ecx
jnz .2
call disasm_get_byte
cbw
jmp @f
.2:
call disasm_get_word
@@:
test ax, ax
jns @f
mov byte [edi-1], '-'
neg ax
@@:
call disasm_write_num
.done1:
mov al, ']'
stosb
pop ecx
ret
.vmod0:
mov byte [edi], '['
inc edi
cmp al, 6
jz .ofs16
cmp al, 4
jae @f
mov eax, [disasm_rm16_1+eax*4]
stosw
mov al, '+'
stosb
shr eax, 16
jmp .3
@@:
mov eax, dword [disasm_rm16_2+eax*2-4*2]
.3:
stosw
jmp .done1
.ofs16:
xor eax, eax
call disasm_get_word
call disasm_write_num
jmp .done1
;-----------------------------------------------------------------------------
cpush21:
mov eax, 'push'
stosd
mov eax, ' '
stosd
disasm_i32:
call disasm_get_dword
call disasm_write_num
and byte [edi], 0
ret
cpush22:
mov eax, 'push'
stosd
mov eax, ' '
stosd
call disasm_get_byte
movsx eax, al
@@:
call disasm_write_num
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
center:
mov eax, 'ente'
stosd
mov eax, 'r '
stosd
xor eax, eax
call disasm_get_word
call disasm_write_num
mov al, ','
stosb
mov al, ' '
stosb
xor eax, eax
call disasm_get_byte
jmp @b
;-----------------------------------------------------------------------------
cinc1:
; inc reg32
cdec1:
; dec reg32
cpush1:
; push reg32
cpop1:
; pop reg32
cbswap:
; bswap reg32
mov edx, eax
and edx, 7
shr eax, 3
sub al, 8
mov esi, 'inc '
jz @f
mov esi, 'dec '
dec al
jz @f
mov esi, 'push'
dec al
jz @f
mov esi, 'pop '
dec al
jz @f
mov esi, 'bswa'
@@:
xchg eax, esi
stosd
mov eax, ' '
jz @f
mov al, 'p'
@@:
stosd
xchg eax, edx
call disasm_write_reg1632
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
cxchg1:
; xchg eax,reg32
and eax, 7
xchg eax, edx
mov eax, 'xchg'
stosd
mov eax, ' '
stosd
xor eax, eax
call disasm_write_reg1632
mov ax, ', '
stosw
xchg eax, edx
call disasm_write_reg1632
and byte [edi], 0
ret
cint:
mov eax, 'int '
stosd
mov eax, ' '
stosd
disasm_i8u:
xor eax, eax
call disasm_get_byte
call disasm_write_num
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
cmov11:
; mov r8,i8
mov ecx, eax
mov eax, 'mov '
stosd
mov eax, ' '
stosd
and ecx, 7
mov ax, [disasm_regs8+ecx*2]
stosw
mov ax, ', '
stosw
jmp disasm_i8u
;-----------------------------------------------------------------------------
cmov12:
; mov r32,i32
xchg eax, edx
mov eax, 'mov '
stosd
mov eax, ' '
stosd
xchg eax, edx
and eax, 7
call disasm_write_reg1632
mov ax, ', '
stosw
jmp cmov2.1
;-----------------------------------------------------------------------------
iglobal
disasm_shifts dd 'rol ','ror ','rcl ','rcr ','shl ','shr ','sal ','sar '
endg
;-----------------------------------------------------------------------------
cshift2:
; shift r/m,1 = D0/D1
cshift3:
; shift r/m,cl = D2/D3
disasm_set_modew
mov dl, al
call disasm_get_byte
dec [disasm_cur_pos]
shr al, 3
and eax, 7
mov eax, [disasm_shifts+eax*4]
stosd
mov eax, ' '
stosd
call disasm_readrmop
cmp dl, 0xD2
jb .s1
mov eax, ', cl'
stosd
and byte [edi], 0
ret
.s1:
mov eax, ', 1'
stosd
clc
ret
;-----------------------------------------------------------------------------
cshift1:
; shift r/m,i8 = C0/C1
disasm_set_modew
call disasm_get_byte
dec [disasm_cur_pos]
shr al, 3
and eax, 7
mov eax, [disasm_shifts+eax*4]
stosd
mov eax, ' '
stosd
call disasm_readrmop
mov ax, ', '
stosw
jmp disasm_i8u
;-----------------------------------------------------------------------------
caam:
mov eax, 'aam '
jmp @f
caad:
mov eax, 'aad '
@@:
stosd
mov eax, ' '
stosd
xor eax, eax
call disasm_get_byte
cmp al, 10
jz @f
call disasm_write_num
@@:
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
cmov3:
; A0: mov al,[ofs32]
; A1: mov ax/eax,[ofs32]
; A2: mov [ofs32],al
; A3: mov [ofs32],ax/eax
mov edx, 'mov '
xchg eax, edx
stosd
mov eax, ' '
stosd
test dl, 2
jnz .1
call .write_acc
mov ax, ', '
stosw
call .write_ofs32
jmp .2
.1:
call .write_ofs32
mov ax, ', '
stosw
call .write_acc
.2:
and byte [edi], 0
ret
.write_acc:
test dl, 1
jz .8bit
test ch, 1
jnz .16bit
mov eax, 'eax'
stosd
dec edi
ret
.16bit:
mov ax, 'ax'
stosw
ret
.8bit:
mov ax, 'al'
stosw
ret
.write_ofs32:
mov al, '['
stosb
call disasm_get_dword
call disasm_write_num
mov al, ']'
stosb
ret
;-----------------------------------------------------------------------------
disasm_write_reg:
test ch, 80h
jnz disasm_write_reg1632
mov ax, [disasm_regs8+eax*2]
stosw
ret
;-----------------------------------------------------------------------------
disasm_write_reg1632:
test ch, 1
jnz @f
mov eax, [disasm_regs32+eax*4]
stosd
dec edi
ret
@@:
mov ax, [disasm_regs16+eax*2]
stosw
ret
;-----------------------------------------------------------------------------
; 0F B6/B7
cmovzx:
; 0F BE/BF
cmovsx:
mov edx, eax
disasm_set_modew
mov eax, 'movz'
cmp dl, 0xB8
jb @f
mov eax, 'movs'
@@:
stosd
mov eax, 'x '
stosd
call disasm_get_byte
dec [disasm_cur_pos]
shr al, 3
and eax, 7
call disasm_write_reg1632
mov ax, ', '
stosw
or ch, 1 ; 2nd operand - 8 or 16 bits
call disasm_readrmop
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
iglobal
disasm_op2cmds dd 'add ','or ','adc ','sbb ','and ','sub ','xor ','cmp '
endg
;-----------------------------------------------------------------------------
cop21:
disasm_set_modew
mov esi, 'test'
cmp al, 0A8h
jae @f
shr al, 3
and eax, 7
mov esi, [disasm_op2cmds+eax*4]
@@:
xchg eax, esi
stosd
mov eax, ' '
stosd
test ch, 80h
jnz .1632
mov eax, 'al, '
stosd
jmp disasm_i8u
.1632:
test ch, 1
jnz .16
mov eax, 'eax,'
stosd
mov al, ' '
stosb
call disasm_get_dword
jmp .x
.16:
mov eax, 'ax, '
stosd
xor eax, eax
call disasm_get_word
.x:
call disasm_write_num
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
carpl:
xor edx, edx
or ch, 0C1h
mov eax, 'arpl'
jmp cop22.d2
;-----------------------------------------------------------------------------
ccmpxchg:
xor edx, edx
disasm_set_modew
or ch, 40h
mov eax, 'cmpx'
stosd
mov eax, 'chg '
jmp cop22.d1
;-----------------------------------------------------------------------------
cbsf:
cbsr:
or ch, 80h
;-----------------------------------------------------------------------------
cop22:
disasm_set_modew
or ch, 40h
mov edx, eax
mov esi, 'lea '
cmp al, 8Dh
jz @f
mov esi, 'imul'
cmp al, 0xAF
jz @f
mov esi, 'bsf '
cmp al, 0BCh
jz @f
mov esi, 'bsr '
cmp al, 0BDh
jz @f
mov esi, 'mov '
cmp al, 88h
jae @f
mov esi, 'xchg'
cmp al, 86h
jae @f
mov esi, 'test'
cmp al, 84h
jae @f
shr al, 3
and eax, 7
mov esi, [disasm_op2cmds+eax*4]
@@:
xchg eax, esi
.d2:
stosd
mov eax, ' '
.d1:
stosd
call disasm_get_byte
dec [disasm_cur_pos]
shr al, 3
and eax, 7
cmp dl, 0x8D
jz @f
cmp dl, 0x86
jz @f
cmp dl, 0x87
jz @f
cmp dl, 0xBC
jz @f
cmp dl, 0xBD
jz @f
test dl, 2
jz .d0
@@:
call disasm_write_reg
mov ax, ', '
stosw
call disasm_readrmop
and byte [edi], 0
ret
.d0:
push eax
call disasm_readrmop
mov ax, ', '
stosw
pop eax
call disasm_write_reg
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
cbound:
mov edx, eax
mov eax, 'boun'
stosd
mov eax, 'd '
or ch, 0xC0
jmp cop22.d1
;-----------------------------------------------------------------------------
cop23:
disasm_set_modew
xchg eax, edx
call disasm_get_byte
dec [disasm_cur_pos]
shr eax, 3
and eax, 7
mov eax, [disasm_op2cmds+eax*4]
ctest:
stosd
mov eax, ' '
stosd
call disasm_readrmop
mov ax, ', '
stosw
test ch, 80h
jz .i8
cmp dl, 83h
jz .i8
test ch, 1
jnz .i16
call disasm_get_dword
jmp .ic
.i8:
xor eax, eax
call disasm_get_byte
cmp dl, 83h
jnz .ic
movsx eax, al
jmp .ic
.i16:
xor eax, eax
call disasm_get_word
.ic:
call disasm_write_num
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
cmovcc:
or ch, 0C0h
and eax, 0xF
mov ax, [disasm_jcc_codes + eax*2]
mov dword [edi], 'cmov'
add edi, 4
stosw
mov ax, ' '
stosw
call disasm_get_byte
dec [disasm_cur_pos]
shr eax, 3
and eax, 7
call disasm_write_reg1632
mov ax, ', '
stosw
call disasm_readrmop
and byte [edi], 0
ret
; btx r/m,i8 = 0F BA
cbtx1:
or ch, 80h
call disasm_get_byte
dec [disasm_cur_pos]
shr al, 3
and eax, 7
cmp al, 4
jb cunk
mov eax, [btx1codes+eax*4-4*4]
stosd
mov eax, ' '
stosd
call disasm_readrmop
mov ax, ', '
stosw
jmp disasm_i8u
;-----------------------------------------------------------------------------
iglobal
btx1codes dd 'bt ','bts ','btr ','btc '
endg
;-----------------------------------------------------------------------------
; btx r/m,r = 0F 101xx011 (A3,AB,B3,BB)
cbtx2:
shr al, 3
and eax, 3
mov eax, [btx1codes+eax*4]
stosd
mov eax, ' '
stosd
or ch, 0xC0
call disasm_get_byte
dec [disasm_cur_pos]
shr al, 3
and eax, 7
push eax
call disasm_readrmop
mov ax, ', '
stosw
pop eax
call disasm_write_reg1632
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
csetcc:
and eax, 0xF
mov ax, [disasm_jcc_codes + eax*2]
mov dword [edi], 'setc'
add edi, 3
stosw
mov ax, ' '
stosw
stosb
call disasm_readrmop
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
iglobal
disasm_jcc_codes dw 'o ','no','b ','ae','z ','nz','be','a ','s ','ns','p ','np','l ','ge','le','g '
endg
;-----------------------------------------------------------------------------
cjcc1:
cjmp2:
cmp al, 0xEB
jz .1
and eax, 0xF
mov ax, [disasm_jcc_codes + eax*2]
jmp .2
.1:
mov ax, 'mp'
.2:
mov byte [edi], 'j'
inc edi
stosw
mov eax, ' '
stosb
stosd
call disasm_get_byte
movsx eax, al
disasm_rva:
add eax, [disasm_cur_pos]
call disasm_write_num
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
ccall1:
cjmp1:
cjcc2:
mov edx, 'call'
cmp al, 0xE8
jz @f
mov edx, 'jmp '
cmp al, 0xE9
jz @f
mov edx, ' '
and eax, 0xF
mov dx, [disasm_jcc_codes+eax*2]
shl edx, 8
mov dl, 'j'
@@:
xchg eax, edx
stosd
mov eax, ' '
stosd
test ch, 1
jnz @f
call disasm_get_dword
jmp disasm_rva
@@:
call disasm_get_word
add eax, [disasm_cur_pos]
and eax, 0xFFFF
call disasm_write_num
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
ccallf:
mov eax, 'call'
stosd
mov eax, ' '
stosd
mov al, 'd'
test ch, 1
jnz @f
mov al, 'p'
@@:
stosb
mov eax, 'word'
stosd
mov al, ' '
stosb
test ch, 1
jnz .1
call disasm_get_dword
jmp .2
.1:
xor eax, eax
call disasm_get_word
.2:
push eax
xor eax, eax
call disasm_get_word
call disasm_write_num
mov al, ':'
stosb
pop eax
call disasm_write_num
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
iglobal
op11codes dd 'test',0,'not ','neg ','mul ','imul','div ','idiv'
op12codes dd 'inc ','dec ','call',0,'jmp ',0,'push',0
endg
;-----------------------------------------------------------------------------
cop1:
disasm_set_modew
xchg eax, edx
call disasm_get_byte
movzx esi, al
dec [disasm_cur_pos]
shr al, 3
and eax, 7
cmp dl, 0xFE
jnz @f
cmp al, 1
jbe @f
.0:
inc [disasm_cur_pos]
jmp cunk
@@:
and edx, 8
add eax, edx
cmp al, 11
jz .callfar
cmp al, 13
jz .jmpfar
mov eax, [op11codes+eax*4]
test eax, eax
jz .0
cmp eax, 'test'
jz ctest
.2:
stosd
mov eax, ' '
stosd
call disasm_readrmop
and byte [edi], 0
ret
.callfar:
mov eax, 'call'
.1:
cmp esi, 0xC0
jae .0
stosd
mov eax, ' '
stosd
mov eax, 'far '
stosd
mov al, 'd'
test ch, 1
jnz @f
mov al, 'p'
@@:
stosb
or ch, 1
call disasm_readrmop
and byte [edi], 0
ret
.jmpfar:
mov eax, 'jmp '
jmp .1
;-----------------------------------------------------------------------------
cpop2:
or ch, 80h
call disasm_get_byte
dec [disasm_cur_pos]
test al, 00111000b
jnz cunk
mov eax, 'pop '
jmp cop1.2
;-----------------------------------------------------------------------------
cloopnz:
mov eax, 'loop'
stosd
mov eax, 'nz '
test ch, 2
jz @f
mov ah, 'w'
@@:
jmp cloop.cmn
cloopz:
mov eax, 'loop'
stosd
mov eax, 'z '
test ch, 2
jz @f
mov eax, 'zw '
@@:
jmp cloop.cmn
cjcxz:
cloop:
cmp al, 0xE2
jz .loop
test ch, 2
jnz .jcxz
mov eax, 'jecx'
stosd
mov eax, 'z '
jmp .cmn
.jcxz:
mov eax, 'jcxz'
stosd
mov eax, ' '
jmp .cmn
.loop:
mov eax, 'loop'
stosd
mov eax, ' '
test ch, 2
jz .cmn
mov al, 'w'
.cmn:
stosd
call disasm_get_byte
movsx eax, al
add eax, [disasm_cur_pos]
test ch, 1
jz @f
and eax, 0xFFFF
; @@:
disasm_write_num_done:
@@:
call disasm_write_num
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
; imul r,r/m,i
cimul1:
or ch, 80h ; 32bit operation
xchg eax, edx
mov eax, 'imul'
stosd
mov eax, ' '
stosd
call disasm_get_byte
dec [disasm_cur_pos]
shr al, 3
and eax, 7
call disasm_write_reg1632
mov ax, ', '
stosw
call disasm_readrmop
mov ax, ', '
stosw
test ch, 1
jnz .16
cmp dl, 0x69
jz .op32
call disasm_get_byte
movsx eax, al
jmp disasm_write_num_done
.op32:
call disasm_get_dword
jmp disasm_write_num_done
.16:
cmp dl, 0x69
jz .op16
call disasm_get_byte
cbw
jmp disasm_write_num_done
.op16:
xor eax, eax
call disasm_get_word
jmp disasm_write_num_done
;-----------------------------------------------------------------------------
cshld:
cshrd:
mov edx, 'shld'
test al, 8
jz @f
mov edx, 'shrd'
@@:
xchg eax, edx
stosd
mov eax, ' '
stosd
call disasm_get_byte
dec [disasm_cur_pos]
shr al, 3
and eax, 7
push eax
or ch, 80h
call disasm_readrmop
mov ax, ', '
stosw
pop eax
call disasm_write_reg1632
mov ax, ', '
stosw
test dl, 1
jz disasm_i8u
mov ax, 'cl'
stosw
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
ccbw:
mov eax, 'cbw '
test ch, 1
jnz @f
mov eax, 'cwde'
@@:
stosd
and byte [edi], 0
ret
ccwd:
mov eax, 'cwd '
test ch, 1
jnz @b
mov eax, 'cdq '
jmp @b
;-----------------------------------------------------------------------------
ccmpxchg8b:
call disasm_get_byte
cmp al, 0xC0
jae cerr
shr al, 3
and al, 7
cmp al, 1
jnz cerr
dec [disasm_cur_pos]
mov eax, 'cmpx'
stosd
mov eax, 'chg8'
stosd
mov al, 'b'
stosb
mov al, ' '
stosb
or ch, 40h
call disasm_readrmop
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
iglobal
fpuD8 dd 'add ','mul ','com ','comp','sub ','subr','div ','divr'
endg
;-----------------------------------------------------------------------------
cD8:
call disasm_get_byte
dec [disasm_cur_pos]
push eax
shr al, 3
and eax, 7
mov byte [edi], 'f'
inc edi
xchg eax, edx
mov eax, [fpuD8+edx*4]
stosd
mov ax, ' '
stosw
stosb
pop eax
cmp dl, 2
jb .1
cmp dl, 3
jbe .2
.1:
cmp al, 0xC0
jb .2
mov eax, 'st0,'
stosd
mov al, ' '
stosb
.2:
or ch, 80h or 20h
and ch, not 1
call disasm_readrmop
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
iglobal
fpuD9_2:
dq 'fchs ','fabs ',0,0,'ftst ','fxam ',0,0
db 'fld1 fldl2t fldl2e fldpi fldlg2 fldln2 fldz '
dq 0
db 'f2xm1 fyl2x fptan fpatan fxtract fprem1 fdecstp fincstp '
db 'fprem fyl2xp1 fsqrt fsincos frndint fscale fsin fcos '
fpuD9_fnop db 'fnop '
endg
;-----------------------------------------------------------------------------
cD9:
call disasm_get_byte
sub al, 0xC0
jae .l1
dec [disasm_cur_pos]
shr al, 3
and eax, 7
cmp al, 7
jnz @f
mov eax, 'fnst'
stosd
mov eax, 'cw '
jmp .x1
@@:
cmp al, 5
jnz @f
mov eax, 'fldc'
stosd
mov eax, 'w '
.x1:
stosd
or ch, 0C1h
jmp .cmn
@@:
mov edx, 'fld '
test al, al
jz @f
mov edx, 'fst '
cmp al, 2
jz @f
mov edx, 'fstp'
cmp al, 3
jnz cunk
@@:
xchg eax, edx
stosd
mov eax, ' '
stosd
or ch, 80h
and ch, not 1
.cmn:
call disasm_readrmop
and byte [edi], 0
ret
.l1:
cmp al, 10h
jae .l2
mov edx, 'fld '
cmp al, 8
jb @f
mov edx, 'fxch'
@@:
xchg eax, edx
stosd
mov eax, ' '
stosd
xchg eax, edx
and al, 7
add al, '0'
shl eax, 16
mov ax, 'st'
stosd
clc
ret
.l2:
cmp al, 0x10
jnz @f
mov esi, fpuD9_fnop
jmp .l3
@@:
sub al, 0x20
jb cerr
lea esi, [fpuD9_2+eax*8]
cmp byte [esi], 0
jz cerr
.l3:
movsd
movsd
and byte [edi-1], 0
ret
;-----------------------------------------------------------------------------
cDA:
call disasm_get_byte
cmp al, 0xC0
jae cunk
dec [disasm_cur_pos]
shr al, 3
and eax, 7
mov word [edi], 'fi'
inc edi
inc edi
mov eax, [fpuD8+eax*4]
stosd
mov ax, ' '
stosw
or ch, 80h
and ch, not 1 ; 32-bit operand
call disasm_readrmop
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
iglobal
fpuDB dd 'ild ',0,'ist ','istp',0,'ld ',0,'stp '
endg
;-----------------------------------------------------------------------------
cDB:
call disasm_get_byte
cmp al, 0xC0
jae .1
dec [disasm_cur_pos]
shr al, 3
and eax, 7
xchg eax, edx
mov eax, [fpuDB+edx*4]
test eax, eax
jz cerr
mov byte [edi], 'f'
inc edi
stosd
mov ax, ' '
stosw
stosb
or ch, 80h
and ch, not 1 ; 32-bit operand
cmp dl, 4
jb @f
or ch, 20h
and ch, not 80h ; 80-bit operand
@@:
call disasm_readrmop
and byte [edi], 0
ret
.1:
cmp al, 0xE3
jnz cunk
mov eax, 'fnin'
stosd
mov eax, 'it'
stosd
dec edi
ret ; CF cleared
;-----------------------------------------------------------------------------
iglobal
fpuDC dd 'add ','mul ',0,0,'subr','sub ','divr','div '
endg
;-----------------------------------------------------------------------------
cDC:
call disasm_get_byte
cmp al, 0xC0
jae .1
dec [disasm_cur_pos]
shr al, 3
and eax, 7
mov byte [edi], 'f'
inc edi
mov eax, [fpuD8+eax*4]
stosd
mov ax, ' '
stosw
stosb
or ch, 0A1h ; qword
call disasm_readrmop
and byte [edi], 0
ret
.1:
mov dl, al
shr al, 3
and eax, 7
mov eax, [fpuDC+eax*4]
test eax, eax
jz cerr
mov byte [edi], 'f'
inc edi
stosd
mov eax, ' s'
stosd
mov al, 't'
stosb
and edx, 7
lea eax, [edx+'0']
stosb
mov eax, ', st'
stosd
mov ax, '0'
stosw
ret ; CF cleared
;-----------------------------------------------------------------------------
iglobal
fpuDD dd 'fld ',0,'fst ','fstp',0,0,0,0
fpuDD_2 dq 'ffree ',0,'fst ','fstp ','fucom ','fucomp ',0,0
endg
;-----------------------------------------------------------------------------
cDD:
call disasm_get_byte
cmp al, 0xC0
jae .1
dec [disasm_cur_pos]
shr al, 3
and eax, 7
xchg eax, edx
mov eax, [fpuDD+edx*4]
test eax, eax
jz cunk
stosd
mov eax, ' '
stosd
or ch, 0A1h ; qword operand
call disasm_readrmop
and byte [edi], 0
ret
.1:
push eax
shr al, 3
and eax, 7
xchg eax, edx
mov eax, dword [fpuDD_2+edx*8]
test eax, eax
jz cerr
stosd
mov eax, dword [fpuDD_2+4+edx*8]
stosd
mov ax, 'st'
stosw
pop eax
and al, 7
add al, '0'
stosb
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
iglobal
fpuDE dd 'add ','mul ',0,0,'subr','sub ','divr','div '
endg
;-----------------------------------------------------------------------------
cDE:
call disasm_get_byte
cmp al, 0xC0
jae .1
dec [disasm_cur_pos]
mov word [edi], 'fi'
inc edi
inc edi
shr al, 3
and eax, 7
mov eax, [fpuD8+eax*4]
stosd
mov ax, ' '
stosw
or ch, 81h ; force 16-bit
call disasm_readrmop
and byte [edi], 0
ret
.1:
push eax
shr al, 3
and eax, 7
xchg eax, edx
mov eax, [fpuDE+edx*4]
test eax, eax
jz .fcompp
mov byte [edi], 'f'
inc edi
stosd
mov al, 'p'
cmp byte [edi-1], ' '
jnz @f
mov byte [edi-1], al
mov al, ' '
@@:
stosb
mov eax, ' st'
stosd
pop eax
and al, 7
add al, '0'
stosb
mov ax, ', '
stosw
mov eax, 'st0'
stosd
ret ; CF cleared
.fcompp:
pop eax
cmp al, 0xD9
jnz cerr
mov eax, 'fcom'
stosd
mov ax, 'pp'
stosw
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
iglobal
fpuDF dd 'ild ',0,'ist ','istp','bld ','ild ','bstp','istp'
endg
;-----------------------------------------------------------------------------
cDF:
call disasm_get_byte
cmp al, 0xC0
jae .1
dec [disasm_cur_pos]
shr al, 3
and eax, 7
xchg eax, edx
mov eax, [fpuDF+edx*4]
test eax, eax
jz cerr
mov byte [edi], 'f'
inc edi
stosd
mov ax, ' '
stosw
stosb
or ch, 81h ; force 16-bit operand
cmp dl, 4
jb @f
or ch, 20h
test dl, 1
jnz @f
or ch, 40h
@@:
call disasm_readrmop
and byte [edi], 0
ret
.1:
cmp al, 0xE0
jnz cunk
mov eax, 'fnst'
stosd
mov eax, 'sw '
stosd
mov ax, 'ax'
stosw
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
cmovd1:
mov eax, 'movd'
stosd
mov eax, ' '
stosd
call disasm_get_byte
dec [disasm_cur_pos]
shr al, 3
and eax, 7
call disasm_write_mmreg
mov ax, ', '
stosw
or ch, 0C0h
and ch, not 1
call disasm_readrmop
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
cmovd2:
mov eax, 'movd'
stosd
mov eax, ' '
stosd
call disasm_get_byte
dec [disasm_cur_pos]
shr al, 3
and eax, 7
push eax ecx
or ch, 0C0h
and ch, not 1
call disasm_readrmop
mov ax, ', '
stosw
pop ecx eax
call disasm_write_mmreg
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
cmovq1:
test ch, 1
jz .mm
mov eax, 'movd'
stosd
mov eax, 'qa '
stosd
jmp disasm_mmx1
.mm:
mov eax, 'movq'
stosd
mov eax, ' '
stosd
jmp disasm_mmx1
;-----------------------------------------------------------------------------
cmovq2:
test ch, 1
jz .mm
mov eax, 'movd'
stosd
mov eax, 'qa '
stosd
jmp disasm_mmx3
.mm:
mov eax, 'movq'
disasm_mmx2:
stosd
mov eax, ' '
stosd
disasm_mmx3:
or ch, 50h
call disasm_get_byte
dec [disasm_cur_pos]
push eax
call disasm_readrmop
mov ax, ', '
stosw
pop eax
shr al, 3
and eax, 7
call disasm_write_mmreg
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
iglobal
mmx_cmds:
db 0x60,'unpcklbw'
db 0x61,'unpcklwd'
db 0x62,'unpckldq'
db 0x63,'packsswb'
db 0x64,'pcmpgtb '
db 0x65,'pcmpgtw '
db 0x66,'pcmpgtd '
db 0x67,'packuswb'
db 0x68,'unpckhbw'
db 0x69,'unpckhwd'
db 0x6A,'unpckhdq'
db 0x6B,'packssdw'
db 0x74,'pcmpeqb '
db 0x75,'pcmpeqw '
db 0x76,'pcmpeqd '
db 0xD4,'paddq '
db 0xD5,'pmullw '
db 0xD8,'psubusb '
db 0xD9,'psubusw '
db 0xDA,'pminub '
db 0xDB,'pand '
db 0xDC,'paddusb '
db 0xDD,'paddusw '
db 0xDE,'pmaxub '
db 0xDF,'pandn '
db 0xE0,'pavgb '
db 0xE3,'pavgw '
db 0xE4,'pmulhuw '
db 0xE5,'pmulhw '
db 0xE8,'psubsb '
db 0xE9,'psubsw '
db 0xEA,'pminsw '
db 0xEB,'por '
db 0xEC,'paddsb '
db 0xED,'paddsw '
db 0xEE,'pmaxsw '
db 0xEF,'pxor '
db 0xF4,'pmuludq '
db 0xF5,'pmaddwd '
db 0xF6,'psadbw '
db 0xF8,'psubb '
db 0xF9,'psubw '
db 0xFA,'psubd '
db 0xFB,'psubq '
db 0xFC,'paddb '
db 0xFD,'paddw '
db 0xFE,'paddd '
endg
;-----------------------------------------------------------------------------
cpcmn:
mov esi, mmx_cmds
@@:
cmp al, [esi]
jz @f
add esi, 9
jmp @b
@@:
inc esi
mov al, 'p'
cmp byte [esi], al
jz @f
stosb
@@:
movsd
movsd
cmp byte [edi-1], ' '
jz @f
mov al, ' '
stosb
; @@:
disasm_mmx1:
@@:
or ch, 50h
call disasm_get_byte
dec [disasm_cur_pos]
shr al, 3
and eax, 7
call disasm_write_mmreg
mov ax, ', '
stosw
call disasm_readrmop
cmp word [disasm_string], 'cm'
jz .cmp
and byte [edi], 0
ret
.cmp:
call disasm_get_byte
and eax, 7
mov dx, 'eq'
dec eax
js @f
mov dx, 'lt'
jz @f
mov dh, 'e'
dec eax
jnz .no2
@@:
xchg dx, word [disasm_string+3]
mov word [disasm_string+5], dx
and byte [edi], 0
ret
.no2:
dec eax
jnz @f
add edi, 2
push edi
lea esi, [edi-3]
lea ecx, [esi-(disasm_string+8)+2]
std
rep movsb
cld
mov cx, word [esi-3]
mov dword [esi-3], 'unor'
mov byte [esi+1], 'd'
mov word [esi+2], cx
pop edi
and byte [edi+1], 0
ret
@@:
mov edx, 'neq'
dec eax
jz @f
mov edx, 'nlt'
dec eax
jz @f
mov edx, 'nle'
dec eax
jz @f
mov edx, 'ord'
@@:
push edi
lea esi, [edi-1]
lea ecx, [esi-(disasm_string+8)+2]
std
rep movsb
cld
mov cx, word [esi-3]
mov dword [esi-3], edx
mov word [esi], cx
pop edi
and byte [edi+1], 0
ret
;-----------------------------------------------------------------------------
cpsrlw:
mov eax, 'psrl'
jmp @f
cpsraw:
mov eax, 'psra'
jmp @f
cpsllw:
mov eax, 'psll'
@@:
stosd
mov eax, 'w '
stosd
jmp disasm_mmx1
cpsrld:
mov eax, 'psrl'
jmp @f
cpsrad:
mov eax, 'psra'
jmp @f
cpslld:
mov eax, 'psll'
@@:
stosd
mov eax, 'd '
stosd
jmp disasm_mmx1
cpsrlq:
mov eax, 'psrl'
jmp @f
cpsllq:
mov eax, 'psll'
@@:
stosd
mov eax, 'q '
stosd
jmp disasm_mmx1
;-----------------------------------------------------------------------------
csse1:
iglobal
sse_cmds1:
db 0x2F,4,'comi'
db 0x54,3,'and'
db 0x55,4,'andn'
db 0x58,3,'add'
db 0xC2,3,'cmp'
endg
mov esi, sse_cmds1+1
.1:
@@:
movzx edx, byte [esi]
cmp al, [esi-1]
jz @f
lea esi, [esi+edx+2]
jmp @b
@@:
push ecx
mov ecx, edx
inc esi
rep movsb
pop ecx
mov al, 's'
cmp byte [edi-1], 'i'
jz @f
mov al, 'p'
@@:
stosb
mov al, 'd'
test ch, 1
jnz @f
mov al, 's'
@@:
stosb
push ecx
push 5
pop ecx
sub ecx, edx
adc ecx, 1
mov al, ' '
rep stosb
pop ecx
or ch, 1 ; force XMM reg
jmp disasm_mmx1
;-----------------------------------------------------------------------------
csse2:
iglobal
sse_cmds2:
db 0xD0,6,'addsub'
db 0,0
endg
test ch, 1
jz cerr
mov esi, sse_cmds2+1
jmp csse1.1
cpshift:
mov dl, al
mov ax, 'ps'
stosw
call disasm_get_byte
push eax
and al, 0xC0
cmp al, 0xC0
jnz .pop_cunk
pop eax
push eax
shr al, 3
and eax, 7
cmp al, 2
jz .rl
cmp al, 4
jz .ra
cmp al, 6
jz .ll
.pop_cunk:
pop eax
jmp cunk
.ll:
mov ax, 'll'
jmp @f
.rl:
mov ax, 'rl'
jmp @f
.ra:
cmp dl, 0x73
jz .pop_cunk
mov ax, 'ra'
@@:
stosw
mov al, 'w'
cmp dl, 0x71
jz @f
mov al, 'd'
cmp dl, 0x72
jz @f
mov al, 'q'
@@:
stosb
mov ax, ' '
stosw
stosb
pop eax
and eax, 7
call disasm_write_mmreg
mov ax, ', '
stosw
xor eax, eax
call disasm_get_byte
call disasm_write_num
and byte [edi], 0
ret
;-----------------------------------------------------------------------------
iglobal
grp15c1 dq 'fxsave ','fxrstor ','ldmxcsr ','stmxcsr ',0,0,0,'clflush '
endg
;-----------------------------------------------------------------------------
cgrp15:
call disasm_get_byte
cmp al, 0xC0
jae cunk
shr al, 3
and eax, 7
mov edx, eax
mov eax, dword [grp15c1+eax*8]
test eax, eax
jz cerr
dec [disasm_cur_pos]
stosd
mov eax, dword [grp15c1+4+edx*8]
stosd
or ch, 40h
call disasm_readrmop
and byte [edi], 0
ret
; vim: ft=fasm tabstop=4