1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/*
Copyright (c) 2020, David Anderson
All rights reserved.
This software file is hereby placed in the public domain.
For use by anyone for any purpose.
*/
/* This uses this condensed table to make
a simple fast-access C table.
Build and run with
cc -I ../libdwarf buildopscounttab.c dwarf_names.c -o buildop
./buildop >opscounttab.c
*/
#include <stdio.h>
#include "dwarf.h"
#include "dwarf_names.h"
#include "opscounttab.h"
struct ops_table_s {
unsigned char ot_first;
unsigned char ot_last;
signed char ot_opcount;
};
/* Must match libdwarf.h macros */
#define DW_DLV_OK 0
#define DW_DLV_ERROR -1
struct ops_table_s optabsource[]= {
{DW_OP_addr , 0 , 1 },
{DW_OP_deref , 0 , 0 },
{DW_OP_const1u, DW_OP_consts , 1},
{DW_OP_dup, DW_OP_over , 0},
{DW_OP_pick, 0 , 1},
{DW_OP_swap, DW_OP_plus , 0},
{DW_OP_plus_uconst, 0 , 1},
{DW_OP_shl, DW_OP_xor , 0},
{DW_OP_bra , 0 , 1},
{DW_OP_eq, DW_OP_ne , 0},
{DW_OP_skip, 0 , 1},
{DW_OP_lit0 , DW_OP_lit31 , 0},
{DW_OP_reg0 , DW_OP_reg31 , 0},
{DW_OP_breg0 , DW_OP_breg31 , 1},
{DW_OP_regx , DW_OP_fbreg , 1},
{DW_OP_bregx, 0 , 2},
{DW_OP_piece, DW_OP_xderef_size , 1},
{DW_OP_nop , DW_OP_push_object_address ,0},
{DW_OP_call2, DW_OP_call_ref , 1},
{DW_OP_form_tls_address, DW_OP_call_frame_cfa , 0},
{DW_OP_bit_piece, DW_OP_implicit_value , 2},
{DW_OP_stack_value, 0 , 0},
{DW_OP_implicit_pointer, 0 , 2},
{DW_OP_addrx, DW_OP_constx , 1},
{DW_OP_entry_value, 0 , 2},
{DW_OP_const_type, 0 , 3},
{DW_OP_regval_type, DW_OP_deref_type , 2},
{DW_OP_xderef_type, 0, 0},
{DW_OP_convert, DW_OP_reinterpret , 1},
{DW_OP_GNU_push_tls_address, 0,0 },
{DW_OP_GNU_uninit, 0 , 0},
{DW_OP_GNU_encoded_addr, 0 , 1},
{DW_OP_GNU_implicit_pointer,DW_OP_GNU_entry_value , 2},
{DW_OP_GNU_const_type, 0 , 3},
{DW_OP_GNU_regval_type,DW_OP_GNU_deref_type , 2},
{DW_OP_GNU_convert, DW_OP_GNU_variable_value, 1},
{0,0}
};
int main()
{
struct ops_table_s *op;
int inindex = 0;
int outindex = 0;
int f = 0;
int l = 0;
int c = 0;
int res = 0;
int lastop = 0;
printf("/* Generated expression ops table,\n");
printf(" do not edit. */\n");
printf("#include \"opscounttab.h\"\n");
printf("\n");
printf("struct dwarf_opscounttab_s dwarf_opscounttab[] = {\n");
for ( ; ; ++inindex) {
const char *opn = 0;
op = &optabsource[inindex];
f = op->ot_first;
if (!f) {
break;
}
if (lastop && f < lastop) {
printf("FAILED buildopscounttab on OP,out of sequence"
" f=0x%x lastop=0x%x\n",
(unsigned)f,(unsigned)lastop);
return 1; /* effectively exit(1) */
}
l = op->ot_last;
c = op->ot_opcount;
while (f > outindex) {
printf("{/* %-26s 0x%02x*/ %d},\n","unused",outindex,-1);
++outindex;
}
if (!l) {
res = dwarf_get_OP_name(f,&opn);
if (res != DW_DLV_OK) {
printf("FAILED buildopscounttab on OP 0x%x\n",
f);
return 1; /* effectively exit(1) */
}
lastop = f;
printf("{/* %-26s 0x%02x*/ %d},\n",opn,f,c);
++outindex;
} else {
int j = f;
for ( ; j <= l; ++j) {
res = dwarf_get_OP_name(j,&opn);
if (res != DW_DLV_OK) {
printf("FAILED buildopscounttab on OP 0x%x\n",
f);
return 1; /* effectively exit(1); */
}
printf("{/* %-26s 0x%2x*/ %d},\n",opn,j,c);
++outindex;
lastop = j;
}
}
}
while (outindex < DWOPS_ARRAY_SIZE) {
printf("{/* %-26s 0x%02x*/ %d},\n","unused",outindex,-1);
++outindex;
}
printf("};\n");
return 0;
}
|
