Wed, 27 Apr 2016 01:25:04 +0800
Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | /* hsdis.c -- dump a range of addresses as native instructions |
aoqi@0 | 26 | This implements the plugin protocol required by the |
aoqi@0 | 27 | HotSpot PrintAssembly option. |
aoqi@0 | 28 | */ |
aoqi@0 | 29 | |
aoqi@0 | 30 | #include <config.h> /* required by bfd.h */ |
aoqi@0 | 31 | #include <libiberty.h> |
aoqi@0 | 32 | #include <bfd.h> |
aoqi@0 | 33 | #include <dis-asm.h> |
aoqi@0 | 34 | #include <inttypes.h> |
aoqi@0 | 35 | #include <string.h> |
aoqi@0 | 36 | #include <errno.h> |
aoqi@0 | 37 | #include "hsdis.h" |
aoqi@0 | 38 | |
aoqi@0 | 39 | #ifndef bool |
aoqi@0 | 40 | #define bool int |
aoqi@0 | 41 | #define true 1 |
aoqi@0 | 42 | #define false 0 |
aoqi@0 | 43 | #endif /*bool*/ |
aoqi@0 | 44 | |
aoqi@0 | 45 | /* short names for stuff in hsdis.h */ |
aoqi@0 | 46 | typedef decode_instructions_event_callback_ftype event_callback_t; |
aoqi@0 | 47 | typedef decode_instructions_printf_callback_ftype printf_callback_t; |
aoqi@0 | 48 | |
aoqi@0 | 49 | /* disassemble_info.application_data object */ |
aoqi@0 | 50 | struct hsdis_app_data { |
aoqi@0 | 51 | /* virtual address of data */ |
aoqi@0 | 52 | uintptr_t start_va, end_va; |
aoqi@0 | 53 | /* the instructions to be decoded */ |
aoqi@0 | 54 | unsigned char* buffer; |
aoqi@0 | 55 | uintptr_t length; |
aoqi@0 | 56 | event_callback_t event_callback; void* event_stream; |
aoqi@0 | 57 | printf_callback_t printf_callback; void* printf_stream; |
aoqi@0 | 58 | bool losing; |
aoqi@0 | 59 | bool do_newline; |
aoqi@0 | 60 | |
aoqi@0 | 61 | /* the architecture being disassembled */ |
aoqi@0 | 62 | const char* arch_name; |
aoqi@0 | 63 | const bfd_arch_info_type* arch_info; |
aoqi@0 | 64 | |
aoqi@0 | 65 | /* the disassembler we are going to use: */ |
aoqi@0 | 66 | disassembler_ftype dfn; |
aoqi@0 | 67 | struct disassemble_info dinfo; /* the actual struct! */ |
aoqi@0 | 68 | |
aoqi@0 | 69 | char mach_option[64]; |
aoqi@0 | 70 | char insn_options[256]; |
aoqi@0 | 71 | }; |
aoqi@0 | 72 | |
aoqi@0 | 73 | static void* decode(struct hsdis_app_data* app_data, const char* options); |
aoqi@0 | 74 | |
aoqi@0 | 75 | #define DECL_APP_DATA(dinfo) \ |
aoqi@0 | 76 | struct hsdis_app_data* app_data = (struct hsdis_app_data*) (dinfo)->application_data |
aoqi@0 | 77 | |
aoqi@0 | 78 | #define DECL_EVENT_CALLBACK(app_data) \ |
aoqi@0 | 79 | event_callback_t event_callback = (app_data)->event_callback; \ |
aoqi@0 | 80 | void* event_stream = (app_data)->event_stream |
aoqi@0 | 81 | |
aoqi@0 | 82 | #define DECL_PRINTF_CALLBACK(app_data) \ |
aoqi@0 | 83 | printf_callback_t printf_callback = (app_data)->printf_callback; \ |
aoqi@0 | 84 | void* printf_stream = (app_data)->printf_stream |
aoqi@0 | 85 | |
aoqi@0 | 86 | |
aoqi@0 | 87 | static void print_help(struct hsdis_app_data* app_data, |
aoqi@0 | 88 | const char* msg, const char* arg); |
aoqi@0 | 89 | static void setup_app_data(struct hsdis_app_data* app_data, |
aoqi@0 | 90 | const char* options); |
aoqi@0 | 91 | static const char* format_insn_close(const char* close, |
aoqi@0 | 92 | disassemble_info* dinfo, |
aoqi@0 | 93 | char* buf, size_t bufsize); |
aoqi@0 | 94 | |
aoqi@0 | 95 | void* |
aoqi@0 | 96 | #ifdef DLL_ENTRY |
aoqi@0 | 97 | DLL_ENTRY |
aoqi@0 | 98 | #endif |
aoqi@0 | 99 | decode_instructions_virtual(uintptr_t start_va, uintptr_t end_va, |
aoqi@0 | 100 | unsigned char* buffer, uintptr_t length, |
aoqi@0 | 101 | event_callback_t event_callback_arg, void* event_stream_arg, |
aoqi@0 | 102 | printf_callback_t printf_callback_arg, void* printf_stream_arg, |
aoqi@0 | 103 | const char* options, int newline) { |
aoqi@0 | 104 | struct hsdis_app_data app_data; |
aoqi@0 | 105 | memset(&app_data, 0, sizeof(app_data)); |
aoqi@0 | 106 | app_data.start_va = start_va; |
aoqi@0 | 107 | app_data.end_va = end_va; |
aoqi@0 | 108 | app_data.buffer = buffer; |
aoqi@0 | 109 | app_data.length = length; |
aoqi@0 | 110 | app_data.event_callback = event_callback_arg; |
aoqi@0 | 111 | app_data.event_stream = event_stream_arg; |
aoqi@0 | 112 | app_data.printf_callback = printf_callback_arg; |
aoqi@0 | 113 | app_data.printf_stream = printf_stream_arg; |
aoqi@0 | 114 | app_data.do_newline = newline == 0 ? false : true; |
aoqi@0 | 115 | |
aoqi@0 | 116 | return decode(&app_data, options); |
aoqi@0 | 117 | } |
aoqi@0 | 118 | |
aoqi@0 | 119 | /* This is the compatability interface for older version of hotspot */ |
aoqi@0 | 120 | void* |
aoqi@0 | 121 | #ifdef DLL_ENTRY |
aoqi@0 | 122 | DLL_ENTRY |
aoqi@0 | 123 | #endif |
aoqi@0 | 124 | decode_instructions(void* start_pv, void* end_pv, |
aoqi@0 | 125 | event_callback_t event_callback_arg, void* event_stream_arg, |
aoqi@0 | 126 | printf_callback_t printf_callback_arg, void* printf_stream_arg, |
aoqi@0 | 127 | const char* options) { |
aoqi@0 | 128 | decode_instructions_virtual((uintptr_t)start_pv, |
aoqi@0 | 129 | (uintptr_t)end_pv, |
aoqi@0 | 130 | (unsigned char*)start_pv, |
aoqi@0 | 131 | (uintptr_t)end_pv - (uintptr_t)start_pv, |
aoqi@0 | 132 | event_callback_arg, |
aoqi@0 | 133 | event_stream_arg, |
aoqi@0 | 134 | printf_callback_arg, |
aoqi@0 | 135 | printf_stream_arg, |
aoqi@0 | 136 | options, false); |
aoqi@0 | 137 | } |
aoqi@0 | 138 | |
aoqi@0 | 139 | static void* decode(struct hsdis_app_data* app_data, const char* options) { |
aoqi@0 | 140 | setup_app_data(app_data, options); |
aoqi@0 | 141 | char buf[128]; |
aoqi@0 | 142 | |
aoqi@0 | 143 | { |
aoqi@0 | 144 | /* now reload everything from app_data: */ |
aoqi@0 | 145 | DECL_EVENT_CALLBACK(app_data); |
aoqi@0 | 146 | DECL_PRINTF_CALLBACK(app_data); |
aoqi@0 | 147 | uintptr_t start = app_data->start_va; |
aoqi@0 | 148 | uintptr_t end = app_data->end_va; |
aoqi@0 | 149 | uintptr_t p = start; |
aoqi@0 | 150 | |
aoqi@0 | 151 | (*event_callback)(event_stream, "insns", (void*)start); |
aoqi@0 | 152 | |
aoqi@0 | 153 | (*event_callback)(event_stream, "mach name='%s'", |
aoqi@0 | 154 | (void*) app_data->arch_info->printable_name); |
aoqi@0 | 155 | if (app_data->dinfo.bytes_per_line != 0) { |
aoqi@0 | 156 | (*event_callback)(event_stream, "format bytes-per-line='%p'/", |
aoqi@0 | 157 | (void*)(intptr_t) app_data->dinfo.bytes_per_line); |
aoqi@0 | 158 | } |
aoqi@0 | 159 | |
aoqi@0 | 160 | while (p < end && !app_data->losing) { |
aoqi@0 | 161 | (*event_callback)(event_stream, "insn", (void*) p); |
aoqi@0 | 162 | |
aoqi@0 | 163 | /* reset certain state, so we can read it with confidence */ |
aoqi@0 | 164 | app_data->dinfo.insn_info_valid = 0; |
aoqi@0 | 165 | app_data->dinfo.branch_delay_insns = 0; |
aoqi@0 | 166 | app_data->dinfo.data_size = 0; |
aoqi@0 | 167 | app_data->dinfo.insn_type = 0; |
aoqi@0 | 168 | |
aoqi@0 | 169 | int size = (*app_data->dfn)((bfd_vma) p, &app_data->dinfo); |
aoqi@0 | 170 | |
aoqi@0 | 171 | if (size > 0) p += size; |
aoqi@0 | 172 | else app_data->losing = true; |
aoqi@0 | 173 | |
aoqi@0 | 174 | if (!app_data->losing) { |
aoqi@0 | 175 | const char* insn_close = format_insn_close("/insn", &app_data->dinfo, |
aoqi@0 | 176 | buf, sizeof(buf)); |
aoqi@0 | 177 | (*event_callback)(event_stream, insn_close, (void*) p); |
aoqi@0 | 178 | |
aoqi@0 | 179 | if (app_data->do_newline) { |
aoqi@0 | 180 | /* follow each complete insn by a nice newline */ |
aoqi@0 | 181 | (*printf_callback)(printf_stream, "\n"); |
aoqi@0 | 182 | } |
aoqi@0 | 183 | } |
aoqi@0 | 184 | } |
aoqi@0 | 185 | |
aoqi@0 | 186 | if (app_data->losing) (*event_callback)(event_stream, "/insns", (void*) p); |
aoqi@0 | 187 | return (void*) p; |
aoqi@0 | 188 | } |
aoqi@0 | 189 | } |
aoqi@0 | 190 | |
aoqi@0 | 191 | /* take the address of the function, for luck, and also test the typedef: */ |
aoqi@0 | 192 | const decode_func_vtype decode_func_virtual_address = &decode_instructions_virtual; |
aoqi@0 | 193 | const decode_func_stype decode_func_address = &decode_instructions; |
aoqi@0 | 194 | |
aoqi@0 | 195 | static const char* format_insn_close(const char* close, |
aoqi@0 | 196 | disassemble_info* dinfo, |
aoqi@0 | 197 | char* buf, size_t bufsize) { |
aoqi@0 | 198 | if (!dinfo->insn_info_valid) |
aoqi@0 | 199 | return close; |
aoqi@0 | 200 | enum dis_insn_type itype = dinfo->insn_type; |
aoqi@0 | 201 | int dsize = dinfo->data_size, delays = dinfo->branch_delay_insns; |
aoqi@0 | 202 | if ((itype == dis_nonbranch && (dsize | delays) == 0) |
aoqi@0 | 203 | || (strlen(close) + 3*20 > bufsize)) |
aoqi@0 | 204 | return close; |
aoqi@0 | 205 | |
aoqi@0 | 206 | const char* type = "unknown"; |
aoqi@0 | 207 | switch (itype) { |
aoqi@0 | 208 | case dis_nonbranch: type = NULL; break; |
aoqi@0 | 209 | case dis_branch: type = "branch"; break; |
aoqi@0 | 210 | case dis_condbranch: type = "condbranch"; break; |
aoqi@0 | 211 | case dis_jsr: type = "jsr"; break; |
aoqi@0 | 212 | case dis_condjsr: type = "condjsr"; break; |
aoqi@0 | 213 | case dis_dref: type = "dref"; break; |
aoqi@0 | 214 | case dis_dref2: type = "dref2"; break; |
aoqi@0 | 215 | } |
aoqi@0 | 216 | |
aoqi@0 | 217 | strcpy(buf, close); |
aoqi@0 | 218 | char* p = buf; |
aoqi@0 | 219 | if (type) sprintf(p += strlen(p), " type='%s'", type); |
aoqi@0 | 220 | if (dsize) sprintf(p += strlen(p), " dsize='%d'", dsize); |
aoqi@0 | 221 | if (delays) sprintf(p += strlen(p), " delay='%d'", delays); |
aoqi@0 | 222 | return buf; |
aoqi@0 | 223 | } |
aoqi@0 | 224 | |
aoqi@0 | 225 | /* handler functions */ |
aoqi@0 | 226 | |
aoqi@0 | 227 | static int |
aoqi@0 | 228 | hsdis_read_memory_func(bfd_vma memaddr, |
aoqi@0 | 229 | bfd_byte* myaddr, |
aoqi@0 | 230 | unsigned int length, |
aoqi@0 | 231 | struct disassemble_info* dinfo) { |
aoqi@0 | 232 | DECL_APP_DATA(dinfo); |
aoqi@0 | 233 | /* convert the virtual address memaddr into an address within memory buffer */ |
aoqi@0 | 234 | uintptr_t offset = ((uintptr_t) memaddr) - app_data->start_va; |
aoqi@0 | 235 | if (offset + length > app_data->length) { |
aoqi@0 | 236 | /* read is out of bounds */ |
aoqi@0 | 237 | return EIO; |
aoqi@0 | 238 | } else { |
aoqi@0 | 239 | memcpy(myaddr, (bfd_byte*) (app_data->buffer + offset), length); |
aoqi@0 | 240 | return 0; |
aoqi@0 | 241 | } |
aoqi@0 | 242 | } |
aoqi@0 | 243 | |
aoqi@0 | 244 | static void |
aoqi@0 | 245 | hsdis_print_address_func(bfd_vma vma, struct disassemble_info* dinfo) { |
aoqi@0 | 246 | /* the actual value to print: */ |
aoqi@0 | 247 | void* addr_value = (void*) (uintptr_t) vma; |
aoqi@0 | 248 | DECL_APP_DATA(dinfo); |
aoqi@0 | 249 | DECL_EVENT_CALLBACK(app_data); |
aoqi@0 | 250 | |
aoqi@0 | 251 | /* issue the event: */ |
aoqi@0 | 252 | void* result = |
aoqi@0 | 253 | (*event_callback)(event_stream, "addr/", addr_value); |
aoqi@0 | 254 | if (result == NULL) { |
aoqi@0 | 255 | /* event declined */ |
aoqi@0 | 256 | generic_print_address(vma, dinfo); |
aoqi@0 | 257 | } |
aoqi@0 | 258 | } |
aoqi@0 | 259 | |
aoqi@0 | 260 | |
aoqi@0 | 261 | /* configuration */ |
aoqi@0 | 262 | |
aoqi@0 | 263 | static void set_optional_callbacks(struct hsdis_app_data* app_data); |
aoqi@0 | 264 | static void parse_caller_options(struct hsdis_app_data* app_data, |
aoqi@0 | 265 | const char* caller_options); |
aoqi@0 | 266 | static const char* native_arch_name(); |
aoqi@0 | 267 | static enum bfd_endian native_endian(); |
aoqi@0 | 268 | static const bfd_arch_info_type* find_arch_info(const char* arch_nane); |
aoqi@0 | 269 | static bfd* get_native_bfd(const bfd_arch_info_type* arch_info, |
aoqi@0 | 270 | /* to avoid malloc: */ |
aoqi@0 | 271 | bfd* empty_bfd, bfd_target* empty_xvec); |
aoqi@0 | 272 | static void init_disassemble_info_from_bfd(struct disassemble_info* dinfo, |
aoqi@0 | 273 | void *stream, |
aoqi@0 | 274 | fprintf_ftype fprintf_func, |
aoqi@0 | 275 | bfd* bfd, |
aoqi@0 | 276 | char* disassembler_options); |
aoqi@0 | 277 | static void parse_fake_insn(disassembler_ftype dfn, |
aoqi@0 | 278 | struct disassemble_info* dinfo); |
aoqi@0 | 279 | |
aoqi@0 | 280 | static void setup_app_data(struct hsdis_app_data* app_data, |
aoqi@0 | 281 | const char* caller_options) { |
aoqi@0 | 282 | /* Make reasonable defaults for null callbacks. |
aoqi@0 | 283 | A non-null stream for a null callback is assumed to be a FILE* for output. |
aoqi@0 | 284 | Events are rendered as XML. |
aoqi@0 | 285 | */ |
aoqi@0 | 286 | set_optional_callbacks(app_data); |
aoqi@0 | 287 | |
aoqi@0 | 288 | /* Look into caller_options for anything interesting. */ |
aoqi@0 | 289 | if (caller_options != NULL) |
aoqi@0 | 290 | parse_caller_options(app_data, caller_options); |
aoqi@0 | 291 | |
aoqi@0 | 292 | /* Discover which architecture we are going to disassemble. */ |
aoqi@0 | 293 | app_data->arch_name = &app_data->mach_option[0]; |
aoqi@0 | 294 | if (app_data->arch_name[0] == '\0') |
aoqi@0 | 295 | app_data->arch_name = native_arch_name(); |
aoqi@0 | 296 | app_data->arch_info = find_arch_info(app_data->arch_name); |
aoqi@0 | 297 | |
aoqi@0 | 298 | /* Make a fake bfd to hold the arch. and byteorder info. */ |
aoqi@0 | 299 | struct { |
aoqi@0 | 300 | bfd_target empty_xvec; |
aoqi@0 | 301 | bfd empty_bfd; |
aoqi@0 | 302 | } buf; |
aoqi@0 | 303 | bfd* native_bfd = get_native_bfd(app_data->arch_info, |
aoqi@0 | 304 | /* to avoid malloc: */ |
aoqi@0 | 305 | &buf.empty_bfd, &buf.empty_xvec); |
aoqi@0 | 306 | init_disassemble_info_from_bfd(&app_data->dinfo, |
aoqi@0 | 307 | app_data->printf_stream, |
aoqi@0 | 308 | app_data->printf_callback, |
aoqi@0 | 309 | native_bfd, |
aoqi@0 | 310 | /* On PowerPC we get warnings, if we pass empty options */ |
aoqi@0 | 311 | (caller_options == NULL) ? NULL : app_data->insn_options); |
aoqi@0 | 312 | |
aoqi@0 | 313 | /* Finish linking together the various callback blocks. */ |
aoqi@0 | 314 | app_data->dinfo.application_data = (void*) app_data; |
aoqi@0 | 315 | app_data->dfn = disassembler(native_bfd); |
aoqi@0 | 316 | app_data->dinfo.print_address_func = hsdis_print_address_func; |
aoqi@0 | 317 | app_data->dinfo.read_memory_func = hsdis_read_memory_func; |
aoqi@0 | 318 | |
aoqi@0 | 319 | if (app_data->dfn == NULL) { |
aoqi@0 | 320 | const char* bad = app_data->arch_name; |
aoqi@0 | 321 | static bool complained; |
aoqi@0 | 322 | if (bad == &app_data->mach_option[0]) |
aoqi@0 | 323 | print_help(app_data, "bad mach=%s", bad); |
aoqi@0 | 324 | else if (!complained) |
aoqi@0 | 325 | print_help(app_data, "bad native mach=%s; please port hsdis to this platform", bad); |
aoqi@0 | 326 | complained = true; |
aoqi@0 | 327 | /* must bail out */ |
aoqi@0 | 328 | app_data->losing = true; |
aoqi@0 | 329 | return; |
aoqi@0 | 330 | } |
aoqi@0 | 331 | |
aoqi@0 | 332 | parse_fake_insn(app_data->dfn, &app_data->dinfo); |
aoqi@0 | 333 | } |
aoqi@0 | 334 | |
aoqi@0 | 335 | |
aoqi@0 | 336 | /* ignore all events, return a null */ |
aoqi@0 | 337 | static void* null_event_callback(void* ignore_stream, const char* ignore_event, void* arg) { |
aoqi@0 | 338 | return NULL; |
aoqi@0 | 339 | } |
aoqi@0 | 340 | |
aoqi@0 | 341 | /* print all events as XML markup */ |
aoqi@0 | 342 | static void* xml_event_callback(void* stream, const char* event, void* arg) { |
aoqi@0 | 343 | FILE* fp = (FILE*) stream; |
aoqi@0 | 344 | #define NS_PFX "dis:" |
aoqi@0 | 345 | if (event[0] != '/') { |
aoqi@0 | 346 | /* issue the tag, with or without a formatted argument */ |
aoqi@0 | 347 | fprintf(fp, "<"NS_PFX); |
aoqi@0 | 348 | fprintf(fp, event, arg); |
aoqi@0 | 349 | fprintf(fp, ">"); |
aoqi@0 | 350 | } else { |
aoqi@0 | 351 | ++event; /* skip slash */ |
aoqi@0 | 352 | const char* argp = strchr(event, ' '); |
aoqi@0 | 353 | if (argp == NULL) { |
aoqi@0 | 354 | /* no arguments; just issue the closing tag */ |
aoqi@0 | 355 | fprintf(fp, "</"NS_PFX"%s>", event); |
aoqi@0 | 356 | } else { |
aoqi@0 | 357 | /* split out the closing attributes as <dis:foo_done attr='val'/> */ |
aoqi@0 | 358 | int event_prefix = (argp - event); |
aoqi@0 | 359 | fprintf(fp, "<"NS_PFX"%.*s_done", event_prefix, event); |
aoqi@0 | 360 | fprintf(fp, argp, arg); |
aoqi@0 | 361 | fprintf(fp, "/></"NS_PFX"%.*s>", event_prefix, event); |
aoqi@0 | 362 | } |
aoqi@0 | 363 | } |
aoqi@0 | 364 | return NULL; |
aoqi@0 | 365 | } |
aoqi@0 | 366 | |
aoqi@0 | 367 | static void set_optional_callbacks(struct hsdis_app_data* app_data) { |
aoqi@0 | 368 | if (app_data->printf_callback == NULL) { |
aoqi@0 | 369 | int (*fprintf_callback)(FILE*, const char*, ...) = &fprintf; |
aoqi@0 | 370 | FILE* fprintf_stream = stdout; |
aoqi@0 | 371 | app_data->printf_callback = (printf_callback_t) fprintf_callback; |
aoqi@0 | 372 | if (app_data->printf_stream == NULL) |
aoqi@0 | 373 | app_data->printf_stream = (void*) fprintf_stream; |
aoqi@0 | 374 | } |
aoqi@0 | 375 | if (app_data->event_callback == NULL) { |
aoqi@0 | 376 | if (app_data->event_stream == NULL) |
aoqi@0 | 377 | app_data->event_callback = &null_event_callback; |
aoqi@0 | 378 | else |
aoqi@0 | 379 | app_data->event_callback = &xml_event_callback; |
aoqi@0 | 380 | } |
aoqi@0 | 381 | |
aoqi@0 | 382 | } |
aoqi@0 | 383 | |
aoqi@0 | 384 | static void parse_caller_options(struct hsdis_app_data* app_data, const char* caller_options) { |
aoqi@0 | 385 | char* iop_base = app_data->insn_options; |
aoqi@0 | 386 | char* iop_limit = iop_base + sizeof(app_data->insn_options) - 1; |
aoqi@0 | 387 | char* iop = iop_base; |
aoqi@0 | 388 | const char* p; |
aoqi@0 | 389 | for (p = caller_options; p != NULL; ) { |
aoqi@0 | 390 | const char* q = strchr(p, ','); |
aoqi@0 | 391 | size_t plen = (q == NULL) ? strlen(p) : ((q++) - p); |
aoqi@0 | 392 | if (plen == 4 && strncmp(p, "help", plen) == 0) { |
aoqi@0 | 393 | print_help(app_data, NULL, NULL); |
aoqi@0 | 394 | } else if (plen >= 5 && strncmp(p, "mach=", 5) == 0) { |
aoqi@0 | 395 | char* mach_option = app_data->mach_option; |
aoqi@0 | 396 | size_t mach_size = sizeof(app_data->mach_option); |
aoqi@0 | 397 | mach_size -= 1; /*leave room for the null*/ |
aoqi@0 | 398 | if (plen > mach_size) plen = mach_size; |
aoqi@0 | 399 | strncpy(mach_option, p, plen); |
aoqi@0 | 400 | mach_option[plen] = '\0'; |
aoqi@0 | 401 | } else if (plen > 6 && strncmp(p, "hsdis-", 6) == 0) { |
aoqi@0 | 402 | // do not pass these to the next level |
aoqi@0 | 403 | } else { |
aoqi@0 | 404 | /* just copy it; {i386,sparc}-dis.c might like to see it */ |
aoqi@0 | 405 | if (iop > iop_base && iop < iop_limit) (*iop++) = ','; |
aoqi@0 | 406 | if (iop + plen > iop_limit) |
aoqi@0 | 407 | plen = iop_limit - iop; |
aoqi@0 | 408 | strncpy(iop, p, plen); |
aoqi@0 | 409 | iop += plen; |
aoqi@0 | 410 | } |
aoqi@0 | 411 | p = q; |
aoqi@0 | 412 | } |
aoqi@0 | 413 | } |
aoqi@0 | 414 | |
aoqi@0 | 415 | static void print_help(struct hsdis_app_data* app_data, |
aoqi@0 | 416 | const char* msg, const char* arg) { |
aoqi@0 | 417 | DECL_PRINTF_CALLBACK(app_data); |
aoqi@0 | 418 | if (msg != NULL) { |
aoqi@0 | 419 | (*printf_callback)(printf_stream, "hsdis: "); |
aoqi@0 | 420 | (*printf_callback)(printf_stream, msg, arg); |
aoqi@0 | 421 | (*printf_callback)(printf_stream, "\n"); |
aoqi@0 | 422 | } |
aoqi@0 | 423 | (*printf_callback)(printf_stream, "hsdis output options:\n"); |
aoqi@0 | 424 | if (printf_callback == (printf_callback_t) &fprintf) |
aoqi@0 | 425 | disassembler_usage((FILE*) printf_stream); |
aoqi@0 | 426 | else |
aoqi@0 | 427 | disassembler_usage(stderr); /* better than nothing */ |
aoqi@0 | 428 | (*printf_callback)(printf_stream, " mach=<arch> select disassembly mode\n"); |
aoqi@0 | 429 | #if defined(LIBARCH_i386) || defined(LIBARCH_amd64) |
aoqi@0 | 430 | (*printf_callback)(printf_stream, " mach=i386 select 32-bit mode\n"); |
aoqi@0 | 431 | (*printf_callback)(printf_stream, " mach=x86-64 select 64-bit mode\n"); |
aoqi@0 | 432 | (*printf_callback)(printf_stream, " suffix always print instruction suffix\n"); |
aoqi@0 | 433 | #endif |
aoqi@0 | 434 | (*printf_callback)(printf_stream, " help print this message\n"); |
aoqi@0 | 435 | } |
aoqi@0 | 436 | |
aoqi@0 | 437 | |
aoqi@0 | 438 | /* low-level bfd and arch stuff that binutils doesn't do for us */ |
aoqi@0 | 439 | |
aoqi@0 | 440 | static const bfd_arch_info_type* find_arch_info(const char* arch_name) { |
aoqi@0 | 441 | const bfd_arch_info_type* arch_info = bfd_scan_arch(arch_name); |
aoqi@0 | 442 | if (arch_info == NULL) { |
aoqi@0 | 443 | extern const bfd_arch_info_type bfd_default_arch_struct; |
aoqi@0 | 444 | arch_info = &bfd_default_arch_struct; |
aoqi@0 | 445 | } |
aoqi@0 | 446 | return arch_info; |
aoqi@0 | 447 | } |
aoqi@0 | 448 | |
aoqi@0 | 449 | static const char* native_arch_name() { |
aoqi@0 | 450 | const char* res = NULL; |
aoqi@0 | 451 | #ifdef LIBARCH_i386 |
aoqi@0 | 452 | res = "i386"; |
aoqi@0 | 453 | #endif |
aoqi@0 | 454 | #ifdef LIBARCH_amd64 |
aoqi@0 | 455 | res = "i386:x86-64"; |
aoqi@0 | 456 | #endif |
aoqi@0 | 457 | #ifdef LIBARCH_sparc |
aoqi@0 | 458 | res = "sparc:v8plusb"; |
aoqi@0 | 459 | #endif |
aoqi@0 | 460 | #ifdef LIBARCH_sparcv9 |
aoqi@0 | 461 | res = "sparc:v9b"; |
aoqi@0 | 462 | #endif |
aoqi@0 | 463 | #ifdef LIBARCH_ppc64 |
aoqi@0 | 464 | res = "powerpc:common64"; |
aoqi@0 | 465 | #endif |
aoqi@0 | 466 | if (res == NULL) |
aoqi@0 | 467 | res = "architecture not set in Makefile!"; |
aoqi@0 | 468 | return res; |
aoqi@0 | 469 | } |
aoqi@0 | 470 | |
aoqi@0 | 471 | static enum bfd_endian native_endian() { |
aoqi@0 | 472 | int32_t endian_test = 'x'; |
aoqi@0 | 473 | if (*(const char*) &endian_test == 'x') |
aoqi@0 | 474 | return BFD_ENDIAN_LITTLE; |
aoqi@0 | 475 | else |
aoqi@0 | 476 | return BFD_ENDIAN_BIG; |
aoqi@0 | 477 | } |
aoqi@0 | 478 | |
aoqi@0 | 479 | static bfd* get_native_bfd(const bfd_arch_info_type* arch_info, |
aoqi@0 | 480 | bfd* empty_bfd, bfd_target* empty_xvec) { |
aoqi@0 | 481 | memset(empty_bfd, 0, sizeof(*empty_bfd)); |
aoqi@0 | 482 | memset(empty_xvec, 0, sizeof(*empty_xvec)); |
aoqi@0 | 483 | empty_xvec->flavour = bfd_target_unknown_flavour; |
aoqi@0 | 484 | empty_xvec->byteorder = native_endian(); |
aoqi@0 | 485 | empty_bfd->xvec = empty_xvec; |
aoqi@0 | 486 | empty_bfd->arch_info = arch_info; |
aoqi@0 | 487 | return empty_bfd; |
aoqi@0 | 488 | } |
aoqi@0 | 489 | |
aoqi@0 | 490 | static int read_zero_data_only(bfd_vma ignore_p, |
aoqi@0 | 491 | bfd_byte* myaddr, unsigned int length, |
aoqi@0 | 492 | struct disassemble_info *ignore_info) { |
aoqi@0 | 493 | memset(myaddr, 0, length); |
aoqi@0 | 494 | return 0; |
aoqi@0 | 495 | } |
aoqi@0 | 496 | static int print_to_dev_null(void* ignore_stream, const char* ignore_format, ...) { |
aoqi@0 | 497 | return 0; |
aoqi@0 | 498 | } |
aoqi@0 | 499 | |
aoqi@0 | 500 | /* Prime the pump by running the selected disassembler on a null input. |
aoqi@0 | 501 | This forces the machine-specific disassembler to divulge invariant |
aoqi@0 | 502 | information like bytes_per_line. |
aoqi@0 | 503 | */ |
aoqi@0 | 504 | static void parse_fake_insn(disassembler_ftype dfn, |
aoqi@0 | 505 | struct disassemble_info* dinfo) { |
aoqi@0 | 506 | typedef int (*read_memory_ftype) |
aoqi@0 | 507 | (bfd_vma memaddr, bfd_byte *myaddr, unsigned int length, |
aoqi@0 | 508 | struct disassemble_info *info); |
aoqi@0 | 509 | read_memory_ftype read_memory_func = dinfo->read_memory_func; |
aoqi@0 | 510 | fprintf_ftype fprintf_func = dinfo->fprintf_func; |
aoqi@0 | 511 | |
aoqi@0 | 512 | dinfo->read_memory_func = &read_zero_data_only; |
aoqi@0 | 513 | dinfo->fprintf_func = &print_to_dev_null; |
aoqi@0 | 514 | (*dfn)(0, dinfo); |
aoqi@0 | 515 | |
aoqi@0 | 516 | /* put it back */ |
aoqi@0 | 517 | dinfo->read_memory_func = read_memory_func; |
aoqi@0 | 518 | dinfo->fprintf_func = fprintf_func; |
aoqi@0 | 519 | } |
aoqi@0 | 520 | |
aoqi@0 | 521 | static void init_disassemble_info_from_bfd(struct disassemble_info* dinfo, |
aoqi@0 | 522 | void *stream, |
aoqi@0 | 523 | fprintf_ftype fprintf_func, |
aoqi@0 | 524 | bfd* abfd, |
aoqi@0 | 525 | char* disassembler_options) { |
aoqi@0 | 526 | init_disassemble_info(dinfo, stream, fprintf_func); |
aoqi@0 | 527 | |
aoqi@0 | 528 | dinfo->flavour = bfd_get_flavour(abfd); |
aoqi@0 | 529 | dinfo->arch = bfd_get_arch(abfd); |
aoqi@0 | 530 | dinfo->mach = bfd_get_mach(abfd); |
aoqi@0 | 531 | dinfo->disassembler_options = disassembler_options; |
aoqi@0 | 532 | dinfo->octets_per_byte = bfd_octets_per_byte (abfd); |
aoqi@0 | 533 | dinfo->skip_zeroes = sizeof(void*) * 2; |
aoqi@0 | 534 | dinfo->skip_zeroes_at_end = sizeof(void*)-1; |
aoqi@0 | 535 | dinfo->disassembler_needs_relocs = FALSE; |
aoqi@0 | 536 | |
aoqi@0 | 537 | if (bfd_big_endian(abfd)) |
aoqi@0 | 538 | dinfo->display_endian = dinfo->endian = BFD_ENDIAN_BIG; |
aoqi@0 | 539 | else if (bfd_little_endian(abfd)) |
aoqi@0 | 540 | dinfo->display_endian = dinfo->endian = BFD_ENDIAN_LITTLE; |
aoqi@0 | 541 | else |
aoqi@0 | 542 | dinfo->endian = native_endian(); |
aoqi@0 | 543 | |
aoqi@0 | 544 | disassemble_init_for_target(dinfo); |
aoqi@0 | 545 | } |