Botan 1.10.17

asm_x86_64.h
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1 /*
2 * Assembly Macros for 64-bit x86
3 * (C) 1999-2008 Jack Lloyd
4 *
5 * Distributed under the terms of the Botan license
6 */
7
8 #ifndef BOTAN_ASM_MACROS_X86_64_H__
9 #define BOTAN_ASM_MACROS_X86_64_H__
10
11 /*
12 * General/Global Macros
13 */
14 #define ALIGN .p2align 4,,15
15
16 #define START_LISTING(FILENAME) \
17 .file #FILENAME; \
18 .text; \
19 ALIGN;
20
21 #if defined(__ELF__)
22 .section .note.GNU-stack,"",%progbits
23 #endif
24
25 /*
26 * Function Definitions
27 */
28 #define START_FUNCTION(func_name) \
29 ALIGN; \
30 .global func_name; \
31 .type func_name,@function; \
32 func_name:
33
34 #define END_FUNCTION(func_name) \
35 ret
36
37 /*
38 * Conditional Jumps
39 */
40 #define JUMP_IF_ZERO(REG, LABEL) \
41 cmp IMM(0), REG; \
42 jz LABEL
43
44 #define JUMP_IF_LT(REG, NUM, LABEL) \
45 cmp IMM(NUM), REG; \
46 jl LABEL
47
48 /*
49 * Register Names
50 */
51 #define R0 %rax
52 #define R1 %rbx
53 #define R2 %rcx
54 #define R2_32 %ecx
55 #define R3 %rdx
56 #define R3_32 %edx
57 #define R4 %rsp
58 #define R5 %rbp
59 #define R6 %rsi
60 #define R6_32 %esi
61 #define R7 %rdi
62 #define R8 %r8
63 #define R9 %r9
64 #define R9_32 %r9d
65 #define R10 %r10
66 #define R11 %r11
67 #define R12 %r12
68 #define R13 %r13
69 #define R14 %r14
70 #define R15 %r15
71 #define R16 %r16
72
73 #define ARG_1 R7
74 #define ARG_2 R6
75 #define ARG_2_32 R6_32
76 #define ARG_3 R3
77 #define ARG_3_32 R3_32
78 #define ARG_4 R2
79 #define ARG_4_32 R2_32
80 #define ARG_5 R8
81 #define ARG_6 R9
82 #define ARG_6_32 R9_32
83
84 #define TEMP_1 R10
85 #define TEMP_2 R11
86 #define TEMP_3 ARG_6
87 #define TEMP_4 ARG_5
88 #define TEMP_5 ARG_4
89 #define TEMP_5_32 ARG_4_32
90 #define TEMP_6 ARG_3
91 #define TEMP_7 ARG_2
92 #define TEMP_8 ARG_1
93 #define TEMP_9 R0
94
95 /*
96 * Memory Access Operations
97 */
98 #define ARRAY8(REG, NUM) 8*(NUM)(REG)
99 #define ARRAY4(REG, NUM) 4*(NUM)(REG)
100
101 #define ASSIGN(TO, FROM) mov FROM, TO
102
103 /*
104 * ALU Operations
105 */
106 #define IMM(VAL) $VAL
107
108 #define ADD(TO, FROM) add FROM, TO
109 #define ADD_LAST_CARRY(REG) adc IMM(0), REG
110 #define ADD_IMM(TO, NUM) ADD(TO, IMM(NUM))
111 #define ADD_W_CARRY(TO1, TO2, FROM) add FROM, TO1; adc IMM(0), TO2;
112 #define SUB_IMM(TO, NUM) sub IMM(NUM), TO
113 #define MUL(REG) mul REG
114
115 #define XOR(TO, FROM) xor FROM, TO
116 #define AND(TO, FROM) and FROM, TO
117 #define OR(TO, FROM) or FROM, TO
118 #define NOT(REG) not REG
119 #define ZEROIZE(REG) XOR(REG, REG)
120
121 #define RETURN_VALUE_IS(V) ASSIGN(%rax, V)
122
123 #define ROTL_IMM(REG, NUM) rol IMM(NUM), REG
124 #define ROTR_IMM(REG, NUM) ror IMM(NUM), REG
125 #define ADD3_IMM(TO, FROM, NUM) lea NUM(TO,FROM,1), TO
126
127 #endif