assembly-live-0.s

assembly-live-0.s · 2.5 KiB · ArmAsm Bruto

; A B C D = 8 bits ; IP = Instruction Pointer = 16 bits = 65535 ; SP = Stack Pointer = 16 bits = 65535 ; | AX | ; | A | ; AX = 0000 0000 0000 0000 ; AX, BX, CX, DX = 16 bits ; | EAX | ; | AX | ; | Ah | Al | ; | A | ; EAX = 0000 0000 0000 0000 0000 0000 0000 0000 ; EAX, EBX, ECX, EDX = 32 bits ; EIP = Enhanced IP = 32 bits ; ESP = Enhanced SP = 32 bits ; ; ----- PAE - Physical Address Extension ------ ; ; ; RAX, RBX, RCX, RDX = 64 bits ; RIP = Register IP = 64 bits ; RSP = Register SP = 64 bits mov EAX, EBX ; A = B mov EBX, EAX ; B = A add EAX, EBX ; A = A + B sub EAX, EBX ; A = A - B inc EAX ; A = A + 1 inc AX inc A dec EBX ; B = B - 1 ; RAX = int64 = 64 bits = 1844674407370955161 ; 88 × 10 ^ 27 m ; 5 × 10 ^ -5 m ; /\ /\ /\ ; Mantissa Base Expoente ; 1 sinal 57 bits mantissa - 1 sinal 5 bits de expoente ; 88 25 ( -31 a 31 ) ; ponto flutuante decimal => a * 10 ^ b ; ; ; 5 * 2 = 10 ; 0101 * 0000 0010 = 0000 1010 ; 5 * 4 = 20 ; 0101 * 0000 0100 = 0001 0100 ; 5 * 8 = 40 ; 0101 * 0000 1000 = 0010 1000 ; 5 * 16 = 80 ; 0101 * 0001 0000 = 0101 0000 ; 5 / 2 = 2 ; 0101 / 0000 0010 = 0000 0010 ; float = 32 bit ; Base 2 ; ponto flutuante binario => a * 2 ^ b ; ; ; Mantissa 8 bits = 1 bit sinal, 7 bits numero ; -128 a 127 ; Expoente 4 bits = 1 bit sinal, 3 bits numero ; -8 a 7 ; | Matissa | Expoente | Valor ; |S| Numero |S| ; 0 0000001 0 000 | 1 * 10 ^ 0 = 1 ; 0 | 12 * 10 ^ -2 = 0.12 ; 0 1 011 |128 * 10 ^ -3 = 0.128 ; | 13 * 10 ^ -2 = 0.13 ; 0 0101001 1 010 | 25 * 10 ^ -2 = 0.25 ; 0 1001011 1 010 | 75 * 10 ^ -2 = 0.75 ; 0 0000101 1 001 | 5 * 10 ^ -1 = 0.5 ; 0 0000010 0 000 | 2 * 10 ^ 0 = 2 ; a * 0.5 == a / 2 ; multiplicacoes em FLOAT = ~3 ; divisoes em FLOAT = ~7 ; ´ ; MMX, SSE, AVX, 3DNOW, NEON ; XMM0 = 4 x 64 bits = 4 double ; XMM0 = 8 x 32 bits = 8 float ; XMM0 - XMM15 = 16 FUCKING REGISTRADORES DE 256 BITS ; ; XMM0 + XMM1 == 1 instrução ; ; XMM0[0], XMM0[1], XMM0[2], XMM0[3] ; * XMM1[0], XMM1[1], XMM1[2], XMM1[3] ; = ; FMA = Fused-multiply-add ; XMM0 * XMM1 + XMM2 =>> ONE FUCKING INSTRUCTION!!! ; SIMD = Single Instruction Multiple Data

1	; A B C D = 8 bits
2	; IP = Instruction Pointer = 16 bits = 65535
3	; SP = Stack Pointer = 16 bits = 65535
4	; \| AX \|
5	; \| A \|
6	; AX = 0000 0000 0000 0000
7	; AX, BX, CX, DX = 16 bits
8	; \| EAX \|
9	; \| AX \|
10	; \| Ah \| Al \|
11	; \| A \|
12	; EAX = 0000 0000 0000 0000 0000 0000 0000 0000
13	; EAX, EBX, ECX, EDX = 32 bits
14	; EIP = Enhanced IP = 32 bits
15	; ESP = Enhanced SP = 32 bits
16	;
17	; ----- PAE - Physical Address Extension ------
18	;
19	;
20	; RAX, RBX, RCX, RDX = 64 bits
21	; RIP = Register IP = 64 bits
22	; RSP = Register SP = 64 bits
23
24
25	mov EAX, EBX ; A = B
26	mov EBX, EAX ; B = A
27	add EAX, EBX ; A = A + B
28	sub EAX, EBX ; A = A - B
29	inc EAX ; A = A + 1
30	inc AX
31	inc A
32	dec EBX ; B = B - 1
33
34	; RAX = int64 = 64 bits = 1844674407370955161
35	; 88 × 10 ^ 27 m
36	; 5 × 10 ^ -5 m
37	; /\ /\ /\
38	; Mantissa Base Expoente
39	; 1 sinal 57 bits mantissa - 1 sinal 5 bits de expoente
40	; 88 25 ( -31 a 31 )
41	; ponto flutuante decimal => a * 10 ^ b
42	;
43	;
44	; 5 * 2 = 10 ; 0101 * 0000 0010 = 0000 1010
45	; 5 * 4 = 20 ; 0101 * 0000 0100 = 0001 0100
46	; 5 * 8 = 40 ; 0101 * 0000 1000 = 0010 1000
47	; 5 * 16 = 80 ; 0101 * 0001 0000 = 0101 0000
48	; 5 / 2 = 2 ; 0101 / 0000 0010 = 0000 0010
49
50	; float = 32 bit
51	; Base 2
52	; ponto flutuante binario => a * 2 ^ b
53	;
54	;
55	; Mantissa 8 bits = 1 bit sinal, 7 bits numero
56	; -128 a 127
57	; Expoente 4 bits = 1 bit sinal, 3 bits numero
58	; -8 a 7
59	; \| Matissa \| Expoente \| Valor
60	; \|S\| Numero \|S\|
61	; 0 0000001 0 000 \| 1 * 10 ^ 0 = 1
62	; 0 \| 12 * 10 ^ -2 = 0.12
63	; 0 1 011 \|128 * 10 ^ -3 = 0.128
64	; \| 13 * 10 ^ -2 = 0.13
65	; 0 0101001 1 010 \| 25 * 10 ^ -2 = 0.25
66	; 0 1001011 1 010 \| 75 * 10 ^ -2 = 0.75
67	; 0 0000101 1 001 \| 5 * 10 ^ -1 = 0.5
68	; 0 0000010 0 000 \| 2 * 10 ^ 0 = 2
69	; a * 0.5 == a / 2
70	; multiplicacoes em FLOAT = ~3
71	; divisoes em FLOAT = ~7
72	; ´
73
74	; MMX, SSE, AVX, 3DNOW, NEON
75	; XMM0 = 4 x 64 bits = 4 double
76	; XMM0 = 8 x 32 bits = 8 float
77	; XMM0 - XMM15 = 16 FUCKING REGISTRADORES DE 256 BITS
78	;
79	; XMM0 + XMM1 == 1 instrução
80	;
81	; XMM0[0], XMM0[1], XMM0[2], XMM0[3]
82	; * XMM1[0], XMM1[1], XMM1[2], XMM1[3]
83	; =
84	; FMA = Fused-multiply-add
85	; XMM0 * XMM1 + XMM2 =>> ONE FUCKING INSTRUCTION!!!
86	; SIMD = Single Instruction Multiple Data