module X86_64:sig
..end
Trata-se aqui somente dum fragmente relativamente modesto do assembly X86-64.
type 'a
asm
tipo abstracto para representar código assembly. O parâmetro
'a
é acrescentado como um tipo fantasma.
typetext =
[ `text ] asm
tipo representando código assembly que se encontra na zona de texto
typedata =
[ `data ] asm
tipo representando código assembly que se encontra na zona de dados
typelabel =
string
as etiquetas/rótulos (labels) de endereços são strings
val nop : [> ] asm
a instrução vazia. Pode encontrar-se no texto ou nos dados
val (++) : ([< `data | `text ] as 'a) asm -> 'a asm -> 'a asm
junta dois pedaços de código (text com text, data com data)
val inline : string -> [> ] asm
inline s
copia a string s
tal como está no ficheiro assembly
type
program = {
|
text : |
|
data : |
um programa é constituído de uma zona de texto e de uam zona de dados
val print_program : Stdlib.Format.formatter -> program -> unit
print_program fmt p
imprime o código do programa p
no formatter fmt
val print_in_file : file:string -> program -> unit
typesize =
[ `B | `L | `Q | `W ]
type 'size
register
Tipo abstracto para os registos
val rax : [ `Q ] register
val rbx : [ `Q ] register
val rcx : [ `Q ] register
val rdx : [ `Q ] register
val rsi : [ `Q ] register
val rdi : [ `Q ] register
val rbp : [ `Q ] register
val rsp : [ `Q ] register
val r8 : [ `Q ] register
val r9 : [ `Q ] register
val r10 : [ `Q ] register
val r11 : [ `Q ] register
val r12 : [ `Q ] register
val r13 : [ `Q ] register
val r14 : [ `Q ] register
val r15 : [ `Q ] register
registros 64 bits
val eax : [ `L ] register
val ebx : [ `L ] register
val ecx : [ `L ] register
val edx : [ `L ] register
val esi : [ `L ] register
val edi : [ `L ] register
val ebp : [ `L ] register
val esp : [ `L ] register
val r8d : [ `L ] register
val r9d : [ `L ] register
val r10d : [ `L ] register
val r11d : [ `L ] register
val r12d : [ `L ] register
val r13d : [ `L ] register
val r14d : [ `L ] register
val r15d : [ `L ] register
registros 32 bits
val ax : [ `W ] register
val bx : [ `W ] register
val cx : [ `W ] register
val dx : [ `W ] register
val si : [ `W ] register
val di : [ `W ] register
val bp : [ `W ] register
val sp : [ `W ] register
val r8w : [ `W ] register
val r9w : [ `W ] register
val r10w : [ `W ] register
val r11w : [ `W ] register
val r12w : [ `W ] register
val r13w : [ `W ] register
val r14w : [ `W ] register
val r15w : [ `W ] register
registros 16 bits
val al : [ `B ] register
val bl : [ `B ] register
val cl : [ `B ] register
val dl : [ `B ] register
val ah : [ `B ] register
val bh : [ `B ] register
val ch : [ `B ] register
val dh : [ `B ] register
val sil : [ `B ] register
val dil : [ `B ] register
val bpl : [ `B ] register
val spl : [ `B ] register
val r8b : [ `B ] register
val r9b : [ `B ] register
val r10b : [ `B ] register
val r11b : [ `B ] register
val r12b : [ `B ] register
val r13b : [ `B ] register
val r14b : [ `B ] register
val r15b : [ `B ] register
registros 8 bits
type 'size
operand
O tipo abstracto das operandas
val imm : int -> [> ] operand
operanda directa $i
val imm32 : int32 -> [> ] operand
operande directa $i
val imm64 : int64 -> [> ] operand
operanda directa $i
val reg : 'size register -> 'size operand
val (!%) : 'size register -> 'size operand
registro
val ind : ?ofs:int ->
?index:'size1 register ->
?scale:int -> 'size2 register -> [> ] operand
operanda indirecta ofs(register, index, scale)
val lab : label -> [> ] operand
etiqueta L
val ilab : label -> [ `Q ] operand
etiqueta directa $L
val movb : [ `B ] operand -> [ `B ] operand -> text
val movw : [ `W ] operand -> [ `W ] operand -> text
val movl : [ `L ] operand -> [ `L ] operand -> text
val movq : [ `Q ] operand -> [ `Q ] operand -> text
Cuidado : nem todas as combinações de operandas são permitidas
val movsbw : [ `B ] operand -> [ `W ] register -> text
val movsbl : [ `B ] operand -> [ `L ] register -> text
val movsbq : [ `B ] operand -> [ `Q ] register -> text
val movswl : [ `W ] operand -> [ `L ] register -> text
val movswq : [ `W ] operand -> [ `Q ] register -> text
val movslq : [ `L ] operand -> [ `Q ] register -> text
8->64 bit, com extensão de sinal
val movzbw : [ `B ] operand -> [ `W ] register -> text
val movzbl : [ `B ] operand -> [ `L ] register -> text
val movzbq : [ `B ] operand -> [ `Q ] register -> text
val movzwl : [ `W ] operand -> [ `L ] register -> text
val movzwq : [ `W ] operand -> [ `Q ] register -> text
8->64 bit, com extensão por zero
val movabsq : [ `Q ] operand -> [ `Q ] register -> text
copia um valor directo de 64 bits num registro
val leab : [ `B ] operand -> [ `B ] register -> text
val leaw : [ `W ] operand -> [ `W ] register -> text
val leal : [ `L ] operand -> [ `L ] register -> text
val leaq : [ `Q ] operand -> [ `Q ] register -> text
val incb : [ `B ] operand -> text
val incw : [ `W ] operand -> text
val incl : [ `L ] operand -> text
val incq : [ `Q ] operand -> text
val decb : [ `B ] operand -> text
val decw : [ `W ] operand -> text
val decl : [ `L ] operand -> text
val decq : [ `Q ] operand -> text
val negb : [ `B ] operand -> text
val negw : [ `W ] operand -> text
val negl : [ `L ] operand -> text
val negq : [ `Q ] operand -> text
val addb : [ `B ] operand -> [ `B ] operand -> text
val addw : [ `W ] operand -> [ `W ] operand -> text
val addl : [ `L ] operand -> [ `L ] operand -> text
val addq : [ `Q ] operand -> [ `Q ] operand -> text
val subb : [ `B ] operand -> [ `B ] operand -> text
val subw : [ `W ] operand -> [ `W ] operand -> text
val subl : [ `L ] operand -> [ `L ] operand -> text
val subq : [ `Q ] operand -> [ `Q ] operand -> text
val imulw : [ `W ] operand -> [ `W ] operand -> text
val imull : [ `L ] operand -> [ `L ] operand -> text
val imulq : [ `Q ] operand -> [ `Q ] operand -> text
val idivq : [ `Q ] operand -> text
val cqto : text
val notb : [ `B ] operand -> text
val notw : [ `W ] operand -> text
val notl : [ `L ] operand -> text
val notq : [ `Q ] operand -> text
val andb : [ `B ] operand -> [ `B ] operand -> text
val andw : [ `W ] operand -> [ `W ] operand -> text
val andl : [ `L ] operand -> [ `L ] operand -> text
val andq : [ `Q ] operand -> [ `Q ] operand -> text
val orb : [ `B ] operand -> [ `B ] operand -> text
val orw : [ `W ] operand -> [ `W ] operand -> text
val orl : [ `L ] operand -> [ `L ] operand -> text
val orq : [ `Q ] operand -> [ `Q ] operand -> text
val xorb : [ `B ] operand -> [ `B ] operand -> text
val xorw : [ `W ] operand -> [ `W ] operand -> text
val xorl : [ `L ] operand -> [ `L ] operand -> text
val xorq : [ `Q ] operand -> [ `Q ] operand -> text
Operações de processamento de bits. "e" bitwise, "ou" bitwise, "not" bitwise
val shlb : [ `B ] operand -> [ `B ] operand -> text
val shlw : [ `W ] operand -> [ `W ] operand -> text
val shll : [ `L ] operand -> [ `L ] operand -> text
val shlq : [ `Q ] operand -> [ `Q ] operand -> text
nota: shl é idêntico a sal
val shrb : [ `B ] operand -> [ `B ] operand -> text
val shrw : [ `W ] operand -> [ `W ] operand -> text
val shrl : [ `L ] operand -> [ `L ] operand -> text
val shrq : [ `Q ] operand -> [ `Q ] operand -> text
val sarb : [ `B ] operand -> [ `B ] operand -> text
val sarw : [ `W ] operand -> [ `W ] operand -> text
val sarl : [ `L ] operand -> [ `L ] operand -> text
val sarq : [ `Q ] operand -> [ `Q ] operand -> text
val call : label -> text
val call_star : [ `Q ] operand -> text
val leave : text
val ret : text
chamada de função e retorno
val jmp : label -> text
salto incondicional
val jmp_star : [ `Q ] operand -> text
salto para um endereço calculado
val je : label -> text
val jz : label -> text
val jne : label -> text
val jnz : label -> text
val js : label -> text
val jns : label -> text
val jg : label -> text
val jge : label -> text
val jl : label -> text
val jle : label -> text
val ja : label -> text
val jae : label -> text
val jb : label -> text
val jbe : label -> text
saltos condicionais
val cmpb : [ `B ] operand -> [ `B ] operand -> text
val cmpw : [ `W ] operand -> [ `W ] operand -> text
val cmpl : [ `L ] operand -> [ `L ] operand -> text
val cmpq : [ `Q ] operand -> [ `Q ] operand -> text
val testb : [ `B ] operand -> [ `B ] operand -> text
val testw : [ `W ] operand -> [ `W ] operand -> text
val testl : [ `L ] operand -> [ `L ] operand -> text
val testq : [ `Q ] operand -> [ `Q ] operand -> text
val sete : [ `B ] operand -> text
val setne : [ `B ] operand -> text
val sets : [ `B ] operand -> text
val setns : [ `B ] operand -> text
val setg : [ `B ] operand -> text
val setge : [ `B ] operand -> text
val setl : [ `B ] operand -> text
val setle : [ `B ] operand -> text
val seta : [ `B ] operand -> text
val setae : [ `B ] operand -> text
val setb : [ `B ] operand -> text
val setbe : [ `B ] operand -> text
posiciona o byte operanda em 1 ou 0 conforme o teste der verdade ou não
val pushq : [ `Q ] operand -> text
pushq r
coloca o conteúdo de r
no topo da pilha.
Lembrete : %rsp aponta para o endereço da última célula ocupada
val popq : [ `Q ] register -> text
popq r
coloca a palavra presente no topo da pilha em r
e desempilha
val label : label -> [> ] asm
uma etiqueta. Pode ser encontrada em text ou em data
val globl : label -> [> ] asm
declaração .globl (para main, tipicamente)
val comment : string -> [> ] asm
coloca um comentário no código gerado. Pode ser encontrada em text ou em data
val string : string -> data
uma constante string (que termina com um 0)
val dbyte : int list -> data
val dword : int list -> data
val dint : int list -> data
val dquad : int list -> data
coloca uma lista de valores em 1/2/4/8 bytes na zona data
val address : label list -> data
coloca uma lista de endereços na zona data (com .quad)
val space : int -> data
space n
aloca n
bytes (com valor 0) no segmento dos dados