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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256
|
/* Copyright (c) 2002-2016 Pigeonhole authors, see the included COPYING file
*/
#include "lib.h"
#include "str.h"
#include "sieve-common.h"
#include "sieve-error.h"
#include "sieve-code.h"
#include "sieve-binary-private.h"
/* Quick 'n dirty debug */
#if 0
#define debug_printf(...) printf ("lineinfo: " __VA_ARGS__)
#else
#define debug_printf(...)
#endif
/*
* Opcodes
*/
enum {
LINPROG_OP_COPY,
LINPROG_OP_ADVANCE_PC,
LINPROG_OP_ADVANCE_LINE,
LINPROG_OP_SET_COLUMN,
LINPROG_OP_SPECIAL_BASE
};
#define LINPROG_LINE_BASE 0
#define LINPROG_LINE_RANGE 4
/*
* Lineinfo writer
*/
struct sieve_binary_debug_writer {
struct sieve_binary_block *sblock;
sieve_size_t address;
unsigned long int line;
unsigned long int column;
};
struct sieve_binary_debug_writer *sieve_binary_debug_writer_init
(struct sieve_binary_block *sblock)
{
struct sieve_binary_debug_writer *dwriter;
dwriter = i_new(struct sieve_binary_debug_writer, 1);
dwriter->sblock = sblock;
return dwriter;
}
void sieve_binary_debug_writer_deinit
(struct sieve_binary_debug_writer **dwriter)
{
i_free(*dwriter);
*dwriter = NULL;
}
void sieve_binary_debug_emit
(struct sieve_binary_debug_writer *dwriter, sieve_size_t code_address,
unsigned int code_line, unsigned int code_column)
{
struct sieve_binary_block *sblock = dwriter->sblock;
sieve_size_t address_inc = code_address - dwriter->address;
unsigned int line_inc = code_line - dwriter->line;
unsigned int sp_opcode = 0;
/* Check for applicability of special opcode */
if ( (LINPROG_LINE_BASE + LINPROG_LINE_RANGE - 1) >= line_inc ) {
sp_opcode = LINPROG_OP_SPECIAL_BASE + (line_inc - LINPROG_LINE_BASE) +
(LINPROG_LINE_RANGE * address_inc);
if ( sp_opcode > 255 )
sp_opcode = 0;
}
/* Update line and address */
if ( sp_opcode == 0 ) {
if ( line_inc > 0 ) {
(void)sieve_binary_emit_byte(sblock, LINPROG_OP_ADVANCE_LINE);
(void)sieve_binary_emit_unsigned(sblock, line_inc);
}
if ( address_inc > 0 ) {
(void)sieve_binary_emit_byte(sblock, LINPROG_OP_ADVANCE_PC);
(void)sieve_binary_emit_unsigned(sblock, address_inc);
}
} else {
(void)sieve_binary_emit_byte(sblock, sp_opcode);
}
/* Set column */
if ( dwriter->column != code_column ) {
(void)sieve_binary_emit_byte(sblock, LINPROG_OP_SET_COLUMN);
(void)sieve_binary_emit_unsigned(sblock, code_column);
}
/* Generate matrix row */
(void)sieve_binary_emit_byte(sblock, LINPROG_OP_COPY);
dwriter->address = code_address;
dwriter->line = code_line;
dwriter->column = code_column;
}
/*
* Debug reader
*/
struct sieve_binary_debug_reader {
struct sieve_binary_block *sblock;
sieve_size_t address, last_address;
unsigned long int line, last_line;
unsigned long int column;
sieve_size_t state;
};
struct sieve_binary_debug_reader *sieve_binary_debug_reader_init
(struct sieve_binary_block *sblock)
{
struct sieve_binary_debug_reader *dreader;
dreader = i_new(struct sieve_binary_debug_reader, 1);
dreader->sblock = sblock;
return dreader;
}
void sieve_binary_debug_reader_deinit
(struct sieve_binary_debug_reader **dreader)
{
i_free(*dreader);
*dreader = NULL;
}
void sieve_binary_debug_reader_reset
(struct sieve_binary_debug_reader *dreader)
{
dreader->address = 0;
dreader->line = 0;
dreader->column = 0;
dreader->state = 0;
}
unsigned int sieve_binary_debug_read_line
(struct sieve_binary_debug_reader *dreader, sieve_size_t code_address)
{
size_t linprog_size;
sieve_size_t address;
unsigned long int line;
if ( code_address < dreader->last_address )
sieve_binary_debug_reader_reset(dreader);
if ( code_address >= dreader->last_address &&
code_address < dreader->address ) {
debug_printf("%08llx: NOOP [%08llx]\n",
(unsigned long long) dreader->state, (unsigned long long) code_address);
return dreader->last_line;
}
address = dreader->address;
line = dreader->line;
debug_printf("%08llx: READ [%08llx]\n",
(unsigned long long) dreader->state, (unsigned long long) code_address);
linprog_size = sieve_binary_block_get_size(dreader->sblock);
while ( dreader->state < linprog_size ) {
unsigned int opcode;
unsigned int value;
if ( sieve_binary_read_byte(dreader->sblock, &dreader->state, &opcode) ) {
switch ( opcode ) {
case LINPROG_OP_COPY:
debug_printf("%08llx: COPY ==> %08llx: %ld\n",
(unsigned long long) dreader->state, (unsigned long long) address,
line);
dreader->last_address = dreader->address;
dreader->last_line = dreader->line;
dreader->address = address;
dreader->line = line;
if ( code_address < address ) {
return dreader->last_line;
} else if ( code_address == address ) {
return dreader->line;
}
break;
case LINPROG_OP_ADVANCE_PC:
debug_printf("%08llx: ADV_PC\n", (unsigned long long) dreader->state);
if ( !sieve_binary_read_unsigned
(dreader->sblock, &dreader->state, &value) ) {
sieve_binary_debug_reader_reset(dreader);
return 0;
}
debug_printf(" : + %d\n", value);
address += value;
break;
case LINPROG_OP_ADVANCE_LINE:
debug_printf("%08llx: ADV_LINE\n", (unsigned long long) dreader->state);
if ( !sieve_binary_read_unsigned
(dreader->sblock, &dreader->state, &value) ) {
sieve_binary_debug_reader_reset(dreader);
return 0;
}
debug_printf(" : + %d\n", value);
line += value;
break;
case LINPROG_OP_SET_COLUMN:
debug_printf("%08llx: SET_COL\n", (unsigned long long) dreader->state);
if ( !sieve_binary_read_unsigned
(dreader->sblock, &dreader->state, &value) ) {
sieve_binary_debug_reader_reset(dreader);
return 0;
}
debug_printf(" : = %d\n", value);
dreader->column = value;
break;
default:
opcode -= LINPROG_OP_SPECIAL_BASE;
address += (opcode / LINPROG_LINE_RANGE);
line += LINPROG_LINE_BASE + (opcode % LINPROG_LINE_RANGE);
debug_printf("%08llx: SPECIAL\n", (unsigned long long) dreader->state);
debug_printf(" : +A %d +L %d\n", (opcode / LINPROG_LINE_RANGE),
LINPROG_LINE_BASE + (opcode % LINPROG_LINE_RANGE));
break;
}
} else {
debug_printf("OPCODE READ FAILED\n");
sieve_binary_debug_reader_reset(dreader);
return 0;
}
}
return dreader->line;
}
|