35.1.8. IA-64

 
  THIS SECTION IS UNDER CONSTRUCTION  
 

  




  
  Эволюция 
 

IA-64:
	Itanium  ['00]
	  |
	  V
	Itanium 2 ['02]



  
  Регистры 
 
	--------------------------------------------------------------
Integer
   (static subset)
	r0			Permnent Zero Register
	r1	gp		Global Pointer (Pointer to Global Address Seg)
	r2-r3			(use with 22bit immediate add)
	r4-r7
	r8..r11	ret0..ret3	Integer Returns Values from procedures
	r12	sp		Stack Pointer
	r13	tp		Thread Pointer
	r14..r31
   (stacked subset)
	r32..r39  in0..in7	Incoming Arguments
	r32..r127		(Using Renaming)
		  
	
	
	
Floating-Point
     (static subset)
	f0			Permanent 0.0
	f1			Permanent 1.0
	f2..f7	
	f8..f15	farg0..farg7  fret0..fret7 FP.Params/Returns
	f16..f31
     (stacked subset)
	f32..f127	
Branch
	b0	rp		Return Pointer
	b1..b7	
	
Predicate Regisers (Tags = 1bit).
	p0			Always 1
	p1..p63
	Zero register:	r0 f0
	Direction:	<-------------
	Memory Access:
		mov	r4 = [r5]
	Immediate operands:
		movl	r5,345h
	Byte order:	Little-endian possible too for data,
			Big-endian possible for data.
	Command Length:
			Command pairing in bindle.
			Length of bindle is 16 bytes.
			Command length is xx bits.
	Main Generation
			Itanium	- IA64 1.0
	---------------------------------------------------------------
Форматы обращения к памяти:
		[Rb]		no update  	
		[Rb],Rx		update base
		[Rb],imm9	update base



  
  Особенности 
 
	EPIC микропроцессор с VLIW
	Отсутствуют команды умножения и деления
	Расширения Multimedia: IA-64 уже содержит multimedia комманды
	Little-endian