sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1 | |
| 2 | /*--------------------------------------------------------------------*/ |
| 3 | /*--- C startup stuff, reached from vg_startup.S. ---*/ |
| 4 | /*--- vg_main.c ---*/ |
| 5 | /*--------------------------------------------------------------------*/ |
| 6 | |
| 7 | /* |
| 8 | This file is part of Valgrind, an x86 protected-mode emulator |
| 9 | designed for debugging and profiling binaries on x86-Unixes. |
| 10 | |
| 11 | Copyright (C) 2000-2002 Julian Seward |
| 12 | jseward@acm.org |
| 13 | Julian_Seward@muraroa.demon.co.uk |
| 14 | |
| 15 | This program is free software; you can redistribute it and/or |
| 16 | modify it under the terms of the GNU General Public License as |
| 17 | published by the Free Software Foundation; either version 2 of the |
| 18 | License, or (at your option) any later version. |
| 19 | |
| 20 | This program is distributed in the hope that it will be useful, but |
| 21 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 23 | General Public License for more details. |
| 24 | |
| 25 | You should have received a copy of the GNU General Public License |
| 26 | along with this program; if not, write to the Free Software |
| 27 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 28 | 02111-1307, USA. |
| 29 | |
| 30 | The GNU General Public License is contained in the file LICENSE. |
| 31 | */ |
| 32 | |
| 33 | #include "vg_include.h" |
| 34 | #include "vg_constants.h" |
| 35 | #include "vg_version.h" |
| 36 | |
| 37 | |
| 38 | /* --------------------------------------------------------------------- |
| 39 | Compute offsets into baseBlock. See comments in vg_include.h. |
| 40 | ------------------------------------------------------------------ */ |
| 41 | |
| 42 | /* The variables storing offsets. */ |
| 43 | |
| 44 | #define INVALID_OFFSET (-1) |
| 45 | |
| 46 | Int VGOFF_(m_eax) = INVALID_OFFSET; |
| 47 | Int VGOFF_(m_ecx) = INVALID_OFFSET; |
| 48 | Int VGOFF_(m_edx) = INVALID_OFFSET; |
| 49 | Int VGOFF_(m_ebx) = INVALID_OFFSET; |
| 50 | Int VGOFF_(m_esp) = INVALID_OFFSET; |
| 51 | Int VGOFF_(m_ebp) = INVALID_OFFSET; |
| 52 | Int VGOFF_(m_esi) = INVALID_OFFSET; |
| 53 | Int VGOFF_(m_edi) = INVALID_OFFSET; |
| 54 | Int VGOFF_(m_eflags) = INVALID_OFFSET; |
| 55 | Int VGOFF_(m_fpustate) = INVALID_OFFSET; |
| 56 | Int VGOFF_(m_eip) = INVALID_OFFSET; |
| 57 | Int VGOFF_(spillslots) = INVALID_OFFSET; |
| 58 | Int VGOFF_(sh_eax) = INVALID_OFFSET; |
| 59 | Int VGOFF_(sh_ecx) = INVALID_OFFSET; |
| 60 | Int VGOFF_(sh_edx) = INVALID_OFFSET; |
| 61 | Int VGOFF_(sh_ebx) = INVALID_OFFSET; |
| 62 | Int VGOFF_(sh_esp) = INVALID_OFFSET; |
| 63 | Int VGOFF_(sh_ebp) = INVALID_OFFSET; |
| 64 | Int VGOFF_(sh_esi) = INVALID_OFFSET; |
| 65 | Int VGOFF_(sh_edi) = INVALID_OFFSET; |
| 66 | Int VGOFF_(sh_eflags) = INVALID_OFFSET; |
| 67 | Int VGOFF_(helper_idiv_64_32) = INVALID_OFFSET; |
| 68 | Int VGOFF_(helper_div_64_32) = INVALID_OFFSET; |
| 69 | Int VGOFF_(helper_idiv_32_16) = INVALID_OFFSET; |
| 70 | Int VGOFF_(helper_div_32_16) = INVALID_OFFSET; |
| 71 | Int VGOFF_(helper_idiv_16_8) = INVALID_OFFSET; |
| 72 | Int VGOFF_(helper_div_16_8) = INVALID_OFFSET; |
| 73 | Int VGOFF_(helper_imul_32_64) = INVALID_OFFSET; |
| 74 | Int VGOFF_(helper_mul_32_64) = INVALID_OFFSET; |
| 75 | Int VGOFF_(helper_imul_16_32) = INVALID_OFFSET; |
| 76 | Int VGOFF_(helper_mul_16_32) = INVALID_OFFSET; |
| 77 | Int VGOFF_(helper_imul_8_16) = INVALID_OFFSET; |
| 78 | Int VGOFF_(helper_mul_8_16) = INVALID_OFFSET; |
| 79 | Int VGOFF_(helper_CLD) = INVALID_OFFSET; |
| 80 | Int VGOFF_(helper_STD) = INVALID_OFFSET; |
| 81 | Int VGOFF_(helper_get_dirflag) = INVALID_OFFSET; |
| 82 | Int VGOFF_(helper_shldl) = INVALID_OFFSET; |
| 83 | Int VGOFF_(helper_shldw) = INVALID_OFFSET; |
| 84 | Int VGOFF_(helper_shrdl) = INVALID_OFFSET; |
| 85 | Int VGOFF_(helper_shrdw) = INVALID_OFFSET; |
| 86 | Int VGOFF_(helper_RDTSC) = INVALID_OFFSET; |
| 87 | Int VGOFF_(helper_CPUID) = INVALID_OFFSET; |
| 88 | Int VGOFF_(helper_BSWAP) = INVALID_OFFSET; |
| 89 | Int VGOFF_(helper_bt) = INVALID_OFFSET; |
| 90 | Int VGOFF_(helper_bts) = INVALID_OFFSET; |
| 91 | Int VGOFF_(helper_btr) = INVALID_OFFSET; |
| 92 | Int VGOFF_(helper_btc) = INVALID_OFFSET; |
| 93 | Int VGOFF_(helper_bsf) = INVALID_OFFSET; |
| 94 | Int VGOFF_(helper_bsr) = INVALID_OFFSET; |
| 95 | Int VGOFF_(helper_fstsw_AX) = INVALID_OFFSET; |
| 96 | Int VGOFF_(helper_SAHF) = INVALID_OFFSET; |
sewardj | 4d0ab1f | 2002-03-24 10:00:09 +0000 | [diff] [blame] | 97 | Int VGOFF_(helper_DAS) = INVALID_OFFSET; |
sewardj | fe8a166 | 2002-03-24 11:54:07 +0000 | [diff] [blame^] | 98 | Int VGOFF_(helper_DAA) = INVALID_OFFSET; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 99 | Int VGOFF_(helper_value_check4_fail) = INVALID_OFFSET; |
| 100 | Int VGOFF_(helper_value_check2_fail) = INVALID_OFFSET; |
| 101 | Int VGOFF_(helper_value_check1_fail) = INVALID_OFFSET; |
| 102 | Int VGOFF_(helper_value_check0_fail) = INVALID_OFFSET; |
| 103 | Int VGOFF_(helper_do_syscall) = INVALID_OFFSET; |
| 104 | Int VGOFF_(helper_do_client_request) = INVALID_OFFSET; |
| 105 | Int VGOFF_(helperc_LOADV4) = INVALID_OFFSET; |
| 106 | Int VGOFF_(helperc_LOADV2) = INVALID_OFFSET; |
| 107 | Int VGOFF_(helperc_LOADV1) = INVALID_OFFSET; |
| 108 | Int VGOFF_(helperc_STOREV4) = INVALID_OFFSET; |
| 109 | Int VGOFF_(helperc_STOREV2) = INVALID_OFFSET; |
| 110 | Int VGOFF_(helperc_STOREV1) = INVALID_OFFSET; |
| 111 | Int VGOFF_(handle_esp_assignment) = INVALID_OFFSET; |
| 112 | Int VGOFF_(fpu_write_check) = INVALID_OFFSET; |
| 113 | Int VGOFF_(fpu_read_check) = INVALID_OFFSET; |
| 114 | Int VGOFF_(helper_request_normal_exit) = INVALID_OFFSET; |
| 115 | |
| 116 | |
| 117 | /* This is the actual defn of baseblock. */ |
| 118 | UInt VG_(baseBlock)[VG_BASEBLOCK_WORDS]; |
| 119 | |
| 120 | /* Words. */ |
| 121 | static Int baB_off = 0; |
| 122 | |
| 123 | /* Returns the offset, in words. */ |
| 124 | static Int alloc_BaB ( Int words ) |
| 125 | { |
| 126 | Int off = baB_off; |
| 127 | baB_off += words; |
| 128 | if (baB_off >= VG_BASEBLOCK_WORDS) |
| 129 | VG_(panic)( "alloc_BaB: baseBlock is too small"); |
| 130 | |
| 131 | return off; |
| 132 | } |
| 133 | |
| 134 | /* Allocate 1 word in baseBlock and set it to the given value. */ |
| 135 | static Int alloc_BaB_1_set ( Addr a ) |
| 136 | { |
| 137 | Int off = alloc_BaB(1); |
| 138 | VG_(baseBlock)[off] = (UInt)a; |
| 139 | return off; |
| 140 | } |
| 141 | |
| 142 | |
| 143 | /* Here we assign actual offsets. It's important to get the most |
| 144 | popular referents within 128 bytes of the start, so we can take |
| 145 | advantage of short addressing modes relative to %ebp. Popularity |
| 146 | of offsets was measured on 22 Feb 02 running a KDE application, and |
| 147 | the slots rearranged accordingly, with a 1.5% reduction in total |
| 148 | size of translations. */ |
| 149 | |
| 150 | static void vg_init_baseBlock ( void ) |
| 151 | { |
| 152 | baB_off = 0; |
| 153 | |
| 154 | /* Those with offsets under 128 are carefully chosen. */ |
| 155 | |
| 156 | /* WORD offsets in this column */ |
| 157 | /* 0 */ VGOFF_(m_eax) = alloc_BaB(1); |
| 158 | /* 1 */ VGOFF_(m_ecx) = alloc_BaB(1); |
| 159 | /* 2 */ VGOFF_(m_edx) = alloc_BaB(1); |
| 160 | /* 3 */ VGOFF_(m_ebx) = alloc_BaB(1); |
| 161 | /* 4 */ VGOFF_(m_esp) = alloc_BaB(1); |
| 162 | /* 5 */ VGOFF_(m_ebp) = alloc_BaB(1); |
| 163 | /* 6 */ VGOFF_(m_esi) = alloc_BaB(1); |
| 164 | /* 7 */ VGOFF_(m_edi) = alloc_BaB(1); |
| 165 | /* 8 */ VGOFF_(m_eflags) = alloc_BaB(1); |
| 166 | |
| 167 | /* 9 */ VGOFF_(sh_eax) = alloc_BaB(1); |
| 168 | /* 10 */ VGOFF_(sh_ecx) = alloc_BaB(1); |
| 169 | /* 11 */ VGOFF_(sh_edx) = alloc_BaB(1); |
| 170 | /* 12 */ VGOFF_(sh_ebx) = alloc_BaB(1); |
| 171 | /* 13 */ VGOFF_(sh_esp) = alloc_BaB(1); |
| 172 | /* 14 */ VGOFF_(sh_ebp) = alloc_BaB(1); |
| 173 | /* 15 */ VGOFF_(sh_esi) = alloc_BaB(1); |
| 174 | /* 16 */ VGOFF_(sh_edi) = alloc_BaB(1); |
| 175 | /* 17 */ VGOFF_(sh_eflags) = alloc_BaB(1); |
| 176 | |
| 177 | /* 18 */ |
| 178 | VGOFF_(helper_value_check4_fail) |
| 179 | = alloc_BaB_1_set( (Addr) & VG_(helper_value_check4_fail) ); |
| 180 | /* 19 */ |
| 181 | VGOFF_(helper_value_check0_fail) |
| 182 | = alloc_BaB_1_set( (Addr) & VG_(helper_value_check0_fail) ); |
| 183 | |
| 184 | /* 20 */ |
| 185 | VGOFF_(helperc_STOREV4) |
| 186 | = alloc_BaB_1_set( (Addr) & VG_(helperc_STOREV4) ); |
| 187 | /* 21 */ |
| 188 | VGOFF_(helperc_STOREV1) |
| 189 | = alloc_BaB_1_set( (Addr) & VG_(helperc_STOREV1) ); |
| 190 | |
| 191 | /* 22 */ |
| 192 | VGOFF_(helperc_LOADV4) |
| 193 | = alloc_BaB_1_set( (Addr) & VG_(helperc_LOADV4) ); |
| 194 | /* 23 */ |
| 195 | VGOFF_(helperc_LOADV1) |
| 196 | = alloc_BaB_1_set( (Addr) & VG_(helperc_LOADV1) ); |
| 197 | |
| 198 | /* 24 */ |
| 199 | VGOFF_(handle_esp_assignment) |
| 200 | = alloc_BaB_1_set( (Addr) & VGM_(handle_esp_assignment) ); |
| 201 | |
| 202 | /* 25 */ |
| 203 | VGOFF_(m_eip) = alloc_BaB(1); |
| 204 | |
| 205 | /* There are currently 24 spill slots */ |
| 206 | /* 26 .. 49 This overlaps the magic boundary at >= 32 words, but |
| 207 | most spills are to low numbered spill slots, so the ones above |
| 208 | the boundary don't see much action. */ |
| 209 | VGOFF_(spillslots) = alloc_BaB(VG_MAX_SPILLSLOTS); |
| 210 | |
| 211 | /* These two pushed beyond the boundary because 2-byte transactions |
| 212 | are rare. */ |
| 213 | /* 50 */ |
| 214 | VGOFF_(helperc_STOREV2) |
| 215 | = alloc_BaB_1_set( (Addr) & VG_(helperc_STOREV2) ); |
| 216 | /* 51 */ |
| 217 | VGOFF_(helperc_LOADV2) |
| 218 | = alloc_BaB_1_set( (Addr) & VG_(helperc_LOADV2) ); |
| 219 | |
| 220 | /* 52 */ |
| 221 | VGOFF_(fpu_write_check) |
| 222 | = alloc_BaB_1_set( (Addr) & VGM_(fpu_write_check) ); |
| 223 | /* 53 */ |
| 224 | VGOFF_(fpu_read_check) |
| 225 | = alloc_BaB_1_set( (Addr) & VGM_(fpu_read_check) ); |
| 226 | |
| 227 | /* Actually I don't think these two are ever used. */ |
| 228 | /* 54 */ |
| 229 | VGOFF_(helper_value_check2_fail) |
| 230 | = alloc_BaB_1_set( (Addr) & VG_(helper_value_check2_fail) ); |
| 231 | /* 55 */ |
| 232 | VGOFF_(helper_value_check1_fail) |
| 233 | = alloc_BaB_1_set( (Addr) & VG_(helper_value_check1_fail) ); |
| 234 | |
| 235 | /* I gave up counting at this point. Since they're way above the |
| 236 | short-amode-boundary, there's no point. */ |
| 237 | |
| 238 | VGOFF_(m_fpustate) = alloc_BaB(VG_SIZE_OF_FPUSTATE_W); |
| 239 | |
| 240 | VGOFF_(helper_idiv_64_32) |
| 241 | = alloc_BaB_1_set( (Addr) & VG_(helper_idiv_64_32) ); |
| 242 | VGOFF_(helper_div_64_32) |
| 243 | = alloc_BaB_1_set( (Addr) & VG_(helper_div_64_32) ); |
| 244 | VGOFF_(helper_idiv_32_16) |
| 245 | = alloc_BaB_1_set( (Addr) & VG_(helper_idiv_32_16) ); |
| 246 | VGOFF_(helper_div_32_16) |
| 247 | = alloc_BaB_1_set( (Addr) & VG_(helper_div_32_16) ); |
| 248 | VGOFF_(helper_idiv_16_8) |
| 249 | = alloc_BaB_1_set( (Addr) & VG_(helper_idiv_16_8) ); |
| 250 | VGOFF_(helper_div_16_8) |
| 251 | = alloc_BaB_1_set( (Addr) & VG_(helper_div_16_8) ); |
| 252 | |
| 253 | VGOFF_(helper_imul_32_64) |
| 254 | = alloc_BaB_1_set( (Addr) & VG_(helper_imul_32_64) ); |
| 255 | VGOFF_(helper_mul_32_64) |
| 256 | = alloc_BaB_1_set( (Addr) & VG_(helper_mul_32_64) ); |
| 257 | VGOFF_(helper_imul_16_32) |
| 258 | = alloc_BaB_1_set( (Addr) & VG_(helper_imul_16_32) ); |
| 259 | VGOFF_(helper_mul_16_32) |
| 260 | = alloc_BaB_1_set( (Addr) & VG_(helper_mul_16_32) ); |
| 261 | VGOFF_(helper_imul_8_16) |
| 262 | = alloc_BaB_1_set( (Addr) & VG_(helper_imul_8_16) ); |
| 263 | VGOFF_(helper_mul_8_16) |
| 264 | = alloc_BaB_1_set( (Addr) & VG_(helper_mul_8_16) ); |
| 265 | |
| 266 | VGOFF_(helper_CLD) |
| 267 | = alloc_BaB_1_set( (Addr) & VG_(helper_CLD) ); |
| 268 | VGOFF_(helper_STD) |
| 269 | = alloc_BaB_1_set( (Addr) & VG_(helper_STD) ); |
| 270 | VGOFF_(helper_get_dirflag) |
| 271 | = alloc_BaB_1_set( (Addr) & VG_(helper_get_dirflag) ); |
| 272 | |
| 273 | VGOFF_(helper_shldl) |
| 274 | = alloc_BaB_1_set( (Addr) & VG_(helper_shldl) ); |
| 275 | VGOFF_(helper_shldw) |
| 276 | = alloc_BaB_1_set( (Addr) & VG_(helper_shldw) ); |
| 277 | VGOFF_(helper_shrdl) |
| 278 | = alloc_BaB_1_set( (Addr) & VG_(helper_shrdl) ); |
| 279 | VGOFF_(helper_shrdw) |
| 280 | = alloc_BaB_1_set( (Addr) & VG_(helper_shrdw) ); |
| 281 | |
| 282 | VGOFF_(helper_RDTSC) |
| 283 | = alloc_BaB_1_set( (Addr) & VG_(helper_RDTSC) ); |
| 284 | VGOFF_(helper_CPUID) |
| 285 | = alloc_BaB_1_set( (Addr) & VG_(helper_CPUID) ); |
| 286 | |
| 287 | VGOFF_(helper_bt) |
| 288 | = alloc_BaB_1_set( (Addr) & VG_(helper_bt) ); |
| 289 | VGOFF_(helper_bts) |
| 290 | = alloc_BaB_1_set( (Addr) & VG_(helper_bts) ); |
| 291 | VGOFF_(helper_btr) |
| 292 | = alloc_BaB_1_set( (Addr) & VG_(helper_btr) ); |
| 293 | VGOFF_(helper_btc) |
| 294 | = alloc_BaB_1_set( (Addr) & VG_(helper_btc) ); |
| 295 | |
| 296 | VGOFF_(helper_bsf) |
| 297 | = alloc_BaB_1_set( (Addr) & VG_(helper_bsf) ); |
| 298 | VGOFF_(helper_bsr) |
| 299 | = alloc_BaB_1_set( (Addr) & VG_(helper_bsr) ); |
| 300 | |
| 301 | VGOFF_(helper_fstsw_AX) |
| 302 | = alloc_BaB_1_set( (Addr) & VG_(helper_fstsw_AX) ); |
| 303 | VGOFF_(helper_SAHF) |
| 304 | = alloc_BaB_1_set( (Addr) & VG_(helper_SAHF) ); |
sewardj | 4d0ab1f | 2002-03-24 10:00:09 +0000 | [diff] [blame] | 305 | VGOFF_(helper_DAS) |
| 306 | = alloc_BaB_1_set( (Addr) & VG_(helper_DAS) ); |
sewardj | fe8a166 | 2002-03-24 11:54:07 +0000 | [diff] [blame^] | 307 | VGOFF_(helper_DAA) |
| 308 | = alloc_BaB_1_set( (Addr) & VG_(helper_DAA) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 309 | |
| 310 | VGOFF_(helper_request_normal_exit) |
| 311 | = alloc_BaB_1_set( (Addr) & VG_(helper_request_normal_exit) ); |
| 312 | |
| 313 | VGOFF_(helper_do_syscall) |
| 314 | = alloc_BaB_1_set( (Addr) & VG_(helper_do_syscall) ); |
| 315 | VGOFF_(helper_do_client_request) |
| 316 | = alloc_BaB_1_set( (Addr) & VG_(helper_do_client_request) ); |
| 317 | } |
| 318 | |
| 319 | |
| 320 | /* --------------------------------------------------------------------- |
| 321 | Global entities which are not referenced from generated code. |
| 322 | ------------------------------------------------------------------ */ |
| 323 | |
| 324 | /* The stack on which Valgrind runs. We can't use the same stack as |
| 325 | the simulatee -- that's an important design decision. */ |
| 326 | UInt VG_(stack)[10000]; |
| 327 | |
| 328 | /* Ditto our signal delivery stack. */ |
| 329 | UInt VG_(sigstack)[10000]; |
| 330 | |
| 331 | /* Saving stuff across system calls. */ |
| 332 | UInt VG_(real_fpu_state_saved_over_syscall_d1)[VG_SIZE_OF_FPUSTATE_W]; |
| 333 | UInt VG_(real_fpu_state_saved_over_syscall_d2)[VG_SIZE_OF_FPUSTATE_W]; |
| 334 | Addr VG_(esp_saved_over_syscall_d1); |
| 335 | Addr VG_(esp_saved_over_syscall_d2); |
| 336 | |
| 337 | /* Counts downwards in vg_run_innerloop. */ |
| 338 | UInt VG_(dispatch_ctr); |
| 339 | |
| 340 | /* If vg_dispatch_ctr is set to 1 to force a stop, its |
| 341 | previous value is saved here. */ |
| 342 | UInt VG_(dispatch_ctr_SAVED); |
| 343 | |
| 344 | /* This is why vg_run_innerloop() exited. */ |
| 345 | UInt VG_(interrupt_reason); |
| 346 | |
| 347 | /* vg_oursignalhandler() might longjmp(). Here's the jmp_buf. */ |
| 348 | jmp_buf VG_(toploop_jmpbuf); |
| 349 | /* ... and if so, here's the signal which caused it to do so. */ |
| 350 | Int VG_(longjmpd_on_signal); |
| 351 | |
| 352 | /* 64-bit counter for the number of basic blocks done. */ |
| 353 | ULong VG_(bbs_done); |
| 354 | /* 64-bit counter for the number of bbs to go before a debug exit. */ |
| 355 | ULong VG_(bbs_to_go); |
| 356 | |
| 357 | /* Produce debugging output? */ |
| 358 | Bool VG_(disassemble) = False; |
| 359 | |
| 360 | /* The current LRU epoch. */ |
| 361 | UInt VG_(current_epoch) = 0; |
| 362 | |
| 363 | |
| 364 | /* --------------------------------------------------------------------- |
| 365 | Counters, for informational purposes only. |
| 366 | ------------------------------------------------------------------ */ |
| 367 | |
| 368 | /* Number of lookups which miss the fast tt helper. */ |
| 369 | UInt VG_(tt_fast_misses) = 0; |
| 370 | |
| 371 | |
| 372 | /* Counts for LRU informational messages. */ |
| 373 | |
| 374 | /* Number and total o/t size of new translations this epoch. */ |
| 375 | UInt VG_(this_epoch_in_count) = 0; |
| 376 | UInt VG_(this_epoch_in_osize) = 0; |
| 377 | UInt VG_(this_epoch_in_tsize) = 0; |
| 378 | /* Number and total o/t size of discarded translations this epoch. */ |
| 379 | UInt VG_(this_epoch_out_count) = 0; |
| 380 | UInt VG_(this_epoch_out_osize) = 0; |
| 381 | UInt VG_(this_epoch_out_tsize) = 0; |
| 382 | /* Number and total o/t size of translations overall. */ |
| 383 | UInt VG_(overall_in_count) = 0; |
| 384 | UInt VG_(overall_in_osize) = 0; |
| 385 | UInt VG_(overall_in_tsize) = 0; |
| 386 | /* Number and total o/t size of discards overall. */ |
| 387 | UInt VG_(overall_out_count) = 0; |
| 388 | UInt VG_(overall_out_osize) = 0; |
| 389 | UInt VG_(overall_out_tsize) = 0; |
| 390 | |
| 391 | /* The number of LRU-clearings of TT/TC. */ |
| 392 | UInt VG_(number_of_lrus) = 0; |
| 393 | |
| 394 | |
| 395 | /* Counts pertaining to the register allocator. */ |
| 396 | |
| 397 | /* total number of uinstrs input to reg-alloc */ |
| 398 | UInt VG_(uinstrs_prealloc) = 0; |
| 399 | |
| 400 | /* total number of uinstrs added due to spill code */ |
| 401 | UInt VG_(uinstrs_spill) = 0; |
| 402 | |
| 403 | /* number of bbs requiring spill code */ |
| 404 | UInt VG_(translations_needing_spill) = 0; |
| 405 | |
| 406 | /* total of register ranks over all translations */ |
| 407 | UInt VG_(total_reg_rank) = 0; |
| 408 | |
| 409 | |
| 410 | /* Counts pertaining to the self-modifying-code detection machinery. */ |
| 411 | |
| 412 | /* Total number of writes checked. */ |
| 413 | UInt VG_(smc_total_check4s) = 0; |
| 414 | |
| 415 | /* Number of writes which the fast smc check couldn't show were |
| 416 | harmless. */ |
| 417 | UInt VG_(smc_cache_passed) = 0; |
| 418 | |
| 419 | /* Numnber of writes which really did write on original code. */ |
| 420 | UInt VG_(smc_fancy_passed) = 0; |
| 421 | |
| 422 | /* Number of translations discarded as a result. */ |
| 423 | UInt VG_(smc_discard_count) = 0; |
| 424 | |
| 425 | |
| 426 | /* Counts pertaining to internal sanity checking. */ |
| 427 | |
| 428 | UInt VG_(sanity_fast_count) = 0; |
| 429 | UInt VG_(sanity_slow_count) = 0; |
| 430 | |
| 431 | |
| 432 | |
| 433 | /* --------------------------------------------------------------------- |
| 434 | Values derived from command-line options. |
| 435 | ------------------------------------------------------------------ */ |
| 436 | |
| 437 | Bool VG_(clo_GDB_attach); |
| 438 | Int VG_(sanity_level); |
| 439 | Int VG_(clo_verbosity); |
| 440 | Bool VG_(clo_demangle); |
| 441 | Bool VG_(clo_leak_check); |
| 442 | Bool VG_(clo_show_reachable); |
| 443 | Int VG_(clo_leak_resolution); |
| 444 | Bool VG_(clo_sloppy_malloc); |
| 445 | Bool VG_(clo_partial_loads_ok); |
| 446 | Bool VG_(clo_trace_children); |
| 447 | Int VG_(clo_logfile_fd); |
| 448 | Int VG_(clo_freelist_vol); |
| 449 | Bool VG_(clo_workaround_gcc296_bugs); |
| 450 | Int VG_(clo_n_suppressions); |
| 451 | Char* VG_(clo_suppressions)[VG_CLO_MAX_SFILES]; |
| 452 | Bool VG_(clo_single_step); |
| 453 | Bool VG_(clo_optimise); |
| 454 | Bool VG_(clo_instrument); |
| 455 | Bool VG_(clo_cleanup); |
| 456 | Bool VG_(clo_client_perms); |
| 457 | Int VG_(clo_smc_check); |
| 458 | Bool VG_(clo_trace_syscalls); |
| 459 | Bool VG_(clo_trace_signals); |
| 460 | Bool VG_(clo_trace_symtab); |
| 461 | Bool VG_(clo_trace_malloc); |
| 462 | ULong VG_(clo_stop_after); |
| 463 | Int VG_(clo_dump_error); |
| 464 | Int VG_(clo_backtrace_size); |
| 465 | |
| 466 | /* This Bool is needed by wrappers in vg_clientmalloc.c to decide how |
| 467 | to behave. Initially we say False. */ |
| 468 | Bool VG_(running_on_simd_CPU) = False; |
| 469 | |
| 470 | /* Holds client's %esp at the point we gained control. */ |
| 471 | Addr VG_(esp_at_startup); |
| 472 | |
| 473 | /* As deduced from VG_(esp_at_startup), the client's argc, argv[] and |
| 474 | envp[] as extracted from the client's stack at startup-time. */ |
| 475 | Int VG_(client_argc); |
| 476 | Char** VG_(client_argv); |
| 477 | Char** VG_(client_envp); |
| 478 | |
| 479 | /* A place into which to copy the value of env var VG_ARGS, so we |
| 480 | don't have to modify the original. */ |
| 481 | static Char vg_cmdline_copy[M_VG_CMDLINE_STRLEN]; |
| 482 | |
| 483 | |
| 484 | /* --------------------------------------------------------------------- |
| 485 | Top level simulation loop. |
| 486 | ------------------------------------------------------------------ */ |
| 487 | |
| 488 | /* Create a translation of the client basic block beginning at |
| 489 | orig_addr, and add it to the translation cache & translation table. |
| 490 | This probably doesn't really belong here, but, hey ... */ |
| 491 | void VG_(create_translation_for) ( Addr orig_addr ) |
| 492 | { |
| 493 | Addr trans_addr; |
| 494 | TTEntry tte; |
| 495 | Int orig_size, trans_size; |
| 496 | /* Ensure there is space to hold a translation. */ |
| 497 | VG_(maybe_do_lru_pass)(); |
| 498 | VG_(translate)( orig_addr, &orig_size, &trans_addr, &trans_size ); |
| 499 | /* Copy data at trans_addr into the translation cache. |
| 500 | Returned pointer is to the code, not to the 4-byte |
| 501 | header. */ |
| 502 | /* Since the .orig_size and .trans_size fields are |
| 503 | UShort, be paranoid. */ |
| 504 | vg_assert(orig_size > 0 && orig_size < 65536); |
| 505 | vg_assert(trans_size > 0 && trans_size < 65536); |
| 506 | tte.orig_size = orig_size; |
| 507 | tte.orig_addr = orig_addr; |
| 508 | tte.trans_size = trans_size; |
| 509 | tte.trans_addr = VG_(copy_to_transcache) |
| 510 | ( trans_addr, trans_size ); |
| 511 | tte.mru_epoch = VG_(current_epoch); |
| 512 | /* Free the intermediary -- was allocated by VG_(emit_code). */ |
| 513 | VG_(jitfree)( (void*)trans_addr ); |
| 514 | /* Add to trans tab and set back pointer. */ |
| 515 | VG_(add_to_trans_tab) ( &tte ); |
| 516 | /* Update stats. */ |
| 517 | VG_(this_epoch_in_count) ++; |
| 518 | VG_(this_epoch_in_osize) += orig_size; |
| 519 | VG_(this_epoch_in_tsize) += trans_size; |
| 520 | VG_(overall_in_count) ++; |
| 521 | VG_(overall_in_osize) += orig_size; |
| 522 | VG_(overall_in_tsize) += trans_size; |
| 523 | /* Record translated area for SMC detection. */ |
| 524 | VG_(smc_mark_original) ( |
| 525 | VG_(baseBlock)[VGOFF_(m_eip)], orig_size ); |
| 526 | } |
| 527 | |
| 528 | |
| 529 | /* Runs the client program from %EIP (baseBlock[off_eip]) until it |
| 530 | asks to exit, or until vg_bbs_to_go jumps have happened (the latter |
| 531 | case is for debugging). */ |
| 532 | |
| 533 | void VG_(toploop) ( void ) |
| 534 | { |
| 535 | volatile UInt dispatch_ctr_SAVED; |
| 536 | volatile Int done_this_time; |
| 537 | |
| 538 | /* For the LRU structures, records when the epoch began. */ |
| 539 | volatile ULong epoch_started_at = 0; |
| 540 | |
| 541 | while (True) { |
| 542 | next_outer_loop: |
| 543 | |
| 544 | /* Age the LRU structures if an epoch has been completed. */ |
| 545 | if (VG_(bbs_done) - epoch_started_at >= VG_BBS_PER_EPOCH) { |
| 546 | VG_(current_epoch)++; |
| 547 | epoch_started_at = VG_(bbs_done); |
| 548 | if (VG_(clo_verbosity) > 2) { |
| 549 | UInt tt_used, tc_used; |
| 550 | VG_(get_tt_tc_used) ( &tt_used, &tc_used ); |
| 551 | VG_(message)(Vg_UserMsg, |
| 552 | "%lu bbs, in: %d (%d -> %d), out %d (%d -> %d), TT %d, TC %d", |
| 553 | VG_(bbs_done), |
| 554 | VG_(this_epoch_in_count), |
| 555 | VG_(this_epoch_in_osize), |
| 556 | VG_(this_epoch_in_tsize), |
| 557 | VG_(this_epoch_out_count), |
| 558 | VG_(this_epoch_out_osize), |
| 559 | VG_(this_epoch_out_tsize), |
| 560 | tt_used, tc_used |
| 561 | ); |
| 562 | } |
| 563 | VG_(this_epoch_in_count) = 0; |
| 564 | VG_(this_epoch_in_osize) = 0; |
| 565 | VG_(this_epoch_in_tsize) = 0; |
| 566 | VG_(this_epoch_out_count) = 0; |
| 567 | VG_(this_epoch_out_osize) = 0; |
| 568 | VG_(this_epoch_out_tsize) = 0; |
| 569 | } |
| 570 | |
| 571 | /* Figure out how many bbs to ask vg_run_innerloop to do. */ |
| 572 | if (VG_(bbs_to_go) >= VG_SIGCHECK_INTERVAL) |
| 573 | VG_(dispatch_ctr) = 1 + VG_SIGCHECK_INTERVAL; |
| 574 | else |
| 575 | VG_(dispatch_ctr) = 1 + (UInt)VG_(bbs_to_go); |
| 576 | |
| 577 | /* ... and remember what we asked for. */ |
| 578 | dispatch_ctr_SAVED = VG_(dispatch_ctr); |
| 579 | |
| 580 | /* Now have a go at doing them. */ |
| 581 | VG_(interrupt_reason) = VG_Y_SIGCHECK; |
| 582 | if (__builtin_setjmp(VG_(toploop_jmpbuf)) == 0) { |
| 583 | /* try this ... */ |
| 584 | VG_(run_innerloop)(); |
| 585 | /* We get here if the client didn't take a fault. */ |
| 586 | switch (VG_(interrupt_reason)) { |
| 587 | case VG_Y_SIGCHECK: |
| 588 | /* The counter fell to zero and no other situation has |
| 589 | been detected. */ |
| 590 | vg_assert(VG_(dispatch_ctr) == 0); |
| 591 | done_this_time = dispatch_ctr_SAVED - 1; |
| 592 | VG_(bbs_to_go) -= (ULong)done_this_time; |
| 593 | VG_(bbs_done) += (ULong)done_this_time; |
| 594 | /* Exit if the debug run has ended. */ |
| 595 | if (VG_(bbs_to_go) == 0) goto debug_stop; |
| 596 | VG_(deliver_signals)(); |
| 597 | VG_(do_sanity_checks)(False); |
| 598 | goto next_outer_loop; |
| 599 | case VG_Y_EXIT: |
| 600 | /* The target program tried to exit. */ |
| 601 | done_this_time = dispatch_ctr_SAVED - VG_(dispatch_ctr_SAVED); |
| 602 | done_this_time --; |
| 603 | VG_(bbs_to_go) -= (ULong)done_this_time; |
| 604 | VG_(bbs_done) += (ULong)done_this_time; |
| 605 | return; |
| 606 | case VG_Y_SMC: |
| 607 | /* A write to original code was detected. */ |
| 608 | done_this_time = dispatch_ctr_SAVED - VG_(dispatch_ctr_SAVED); |
| 609 | VG_(bbs_to_go) -= (ULong)done_this_time; |
| 610 | VG_(bbs_done) += (ULong)done_this_time; |
| 611 | VG_(flush_transtab)(); |
| 612 | goto next_outer_loop; |
| 613 | case VG_Y_TRANSLATE: { |
| 614 | /* Need to provide a translation of code at vg_m_eip. */ |
| 615 | done_this_time = dispatch_ctr_SAVED - VG_(dispatch_ctr); |
| 616 | vg_assert(done_this_time > 0); |
| 617 | done_this_time --; |
| 618 | VG_(bbs_to_go) -= (ULong)done_this_time; |
| 619 | VG_(bbs_done) += (ULong)done_this_time; |
| 620 | VG_(create_translation_for)(VG_(baseBlock)[VGOFF_(m_eip)]); |
| 621 | goto next_outer_loop; |
| 622 | } |
| 623 | default: |
| 624 | VG_(panic)("vg_toploop: invalid interrupt reason"); |
| 625 | } |
| 626 | } else { |
| 627 | /* We get here if the client took a fault, which caused our |
| 628 | signal handler to longjmp. */ |
| 629 | done_this_time = dispatch_ctr_SAVED - VG_(dispatch_ctr); |
| 630 | VG_(bbs_to_go) -= (ULong)done_this_time; |
| 631 | VG_(bbs_done) += (ULong)done_this_time; |
| 632 | if (VG_(interrupt_reason) == VG_Y_EXIT) return; |
| 633 | VG_(deliver_signals)(); |
| 634 | VG_(do_sanity_checks)(False); |
| 635 | VG_(unblock_host_signal)(VG_(longjmpd_on_signal)); |
| 636 | } |
| 637 | } |
| 638 | |
| 639 | /* NOTREACHED */ |
| 640 | |
| 641 | debug_stop: |
| 642 | /* If we exited because of a debug stop, print the translation |
| 643 | of the last block executed -- by translating it again, and |
| 644 | throwing away the result. */ |
| 645 | VG_(printf)( |
| 646 | "======vvvvvvvv====== LAST TRANSLATION ======vvvvvvvv======\n"); |
| 647 | VG_(translate)( VG_(baseBlock)[VGOFF_(m_eip)], NULL, NULL, NULL ); |
| 648 | VG_(printf)("\n"); |
| 649 | VG_(printf)( |
| 650 | "======^^^^^^^^====== LAST TRANSLATION ======^^^^^^^^======\n"); |
| 651 | } |
| 652 | |
| 653 | |
| 654 | /* --------------------------------------------------------------------- |
| 655 | Processing of command-line options. |
| 656 | ------------------------------------------------------------------ */ |
| 657 | |
| 658 | static void bad_option ( Char* opt ) |
| 659 | { |
| 660 | VG_(shutdown_logging)(); |
| 661 | VG_(clo_logfile_fd) = 2; /* stderr */ |
| 662 | VG_(printf)("valgrind.so: Bad option `%s'; aborting.\n", opt); |
| 663 | VG_(exit)(1); |
| 664 | } |
| 665 | |
| 666 | static void config_error ( Char* msg ) |
| 667 | { |
| 668 | VG_(shutdown_logging)(); |
| 669 | VG_(clo_logfile_fd) = 2; /* stderr */ |
| 670 | VG_(printf)("valgrind.so: Startup or configuration error:\n\t%s\n", msg); |
| 671 | VG_(printf)("valgrind.so: Unable to start up properly. Giving up.\n"); |
| 672 | VG_(exit)(1); |
| 673 | } |
| 674 | |
| 675 | |
| 676 | static void process_cmd_line_options ( void ) |
| 677 | { |
| 678 | UChar* argv[M_VG_CMDLINE_OPTS]; |
| 679 | UInt argc; |
| 680 | UChar* p; |
| 681 | UChar* str; |
| 682 | Int i, eventually_logfile_fd; |
| 683 | |
| 684 | # define ISSPACE(cc) ((cc) == ' ' || (cc) == '\t' || (cc) == '\n') |
| 685 | # define STREQ(s1,s2) (0==VG_(strcmp_ws)((s1),(s2))) |
| 686 | # define STREQN(nn,s1,s2) (0==VG_(strncmp_ws)((s1),(s2),(nn))) |
| 687 | |
| 688 | /* Set defaults. */ |
| 689 | VG_(clo_GDB_attach) = False; |
| 690 | VG_(sanity_level) = 1; |
| 691 | VG_(clo_verbosity) = 1; |
| 692 | VG_(clo_demangle) = True; |
| 693 | VG_(clo_leak_check) = False; |
| 694 | VG_(clo_show_reachable) = False; |
| 695 | VG_(clo_leak_resolution) = 2; |
| 696 | VG_(clo_sloppy_malloc) = False; |
| 697 | VG_(clo_partial_loads_ok) = True; |
| 698 | VG_(clo_trace_children) = False; |
| 699 | VG_(clo_logfile_fd) = 2; /* stderr */ |
| 700 | VG_(clo_freelist_vol) = 1000000; |
| 701 | VG_(clo_workaround_gcc296_bugs) = False; |
| 702 | VG_(clo_n_suppressions) = 0; |
| 703 | VG_(clo_single_step) = False; |
| 704 | VG_(clo_optimise) = True; |
| 705 | VG_(clo_instrument) = True; |
| 706 | VG_(clo_cleanup) = True; |
| 707 | VG_(clo_client_perms) = False; |
| 708 | VG_(clo_smc_check) = /* VG_CLO_SMC_SOME */ VG_CLO_SMC_NONE; |
| 709 | VG_(clo_trace_syscalls) = False; |
| 710 | VG_(clo_trace_signals) = False; |
| 711 | VG_(clo_trace_symtab) = False; |
| 712 | VG_(clo_trace_malloc) = False; |
| 713 | VG_(clo_stop_after) = 1000000000000LL; |
| 714 | VG_(clo_dump_error) = 0; |
| 715 | VG_(clo_backtrace_size) = 4; |
| 716 | |
| 717 | eventually_logfile_fd = VG_(clo_logfile_fd); |
| 718 | |
| 719 | /* Once logging is started, we can safely send messages pertaining |
| 720 | to failures in initialisation. */ |
| 721 | VG_(startup_logging)(); |
| 722 | |
| 723 | /* Magically find the client's argc/argv/envp. This kludge is |
| 724 | entirely dependent on the stack layout imposed by libc at |
| 725 | startup. Hence the magic offsets. Then check (heuristically) |
| 726 | that the results are plausible. There must be a better way to |
| 727 | do this ... */ |
| 728 | |
| 729 | # if 0 |
| 730 | /* Use this to search for the correct offsets if the tests below |
| 731 | barf. */ |
| 732 | { Int i; |
| 733 | VG_(printf)("startup %%esp is %p\n", VG_(esp_at_startup) ); |
| 734 | for (i = 0; i < 10; i++) { |
| 735 | Char* p = ((Char**)VG_(esp_at_startup))[i]; |
| 736 | VG_(printf)("%d: %p\n", i, p); |
| 737 | } |
| 738 | } |
| 739 | # endif |
| 740 | |
| 741 | /* These offsets (5,6,7) are right for my RedHat 7.2 (glibc-2.2.4) |
| 742 | box. */ |
| 743 | |
| 744 | VG_(client_argc) = (Int) ( ((void**)VG_(esp_at_startup)) [5] ); |
| 745 | VG_(client_argv) = (Char**)( ((void**)VG_(esp_at_startup)) [6] ); |
| 746 | VG_(client_envp) = (Char**)( ((void**)VG_(esp_at_startup)) [7] ); |
| 747 | |
| 748 | if ( ((UInt)VG_(client_argc)) > 0 && |
| 749 | ((UInt)VG_(client_argc)) < 10000 && |
| 750 | (Addr)VG_(client_argv) >= 0x8000000 && |
| 751 | (Addr)VG_(client_envp) >= 0x8000000) |
| 752 | goto argc_argv_envp_OK; |
| 753 | |
| 754 | /* If that's no good, try some other offsets discovered by KDE |
| 755 | folks on 8 Feb 02: |
| 756 | For glibc > 2.2.4 the offset 9/10/11 did the trick. Coolo found |
| 757 | out those, on I think a Caldera 3.1 with glibc 2.2.4 -- the same |
| 758 | offsets worked for on a debian sid with glibc 2.2.5. */ |
| 759 | |
| 760 | VG_(client_argc) = (Int) ( ((void**)VG_(esp_at_startup)) [9] ); |
| 761 | VG_(client_argv) = (Char**)( ((void**)VG_(esp_at_startup)) [10] ); |
| 762 | VG_(client_envp) = (Char**)( ((void**)VG_(esp_at_startup)) [11] ); |
| 763 | |
| 764 | if ( ((UInt)VG_(client_argc)) > 0 && |
| 765 | ((UInt)VG_(client_argc)) < 10000 && |
| 766 | (Addr)VG_(client_argv) >= 0x8000000 && |
| 767 | (Addr)VG_(client_envp) >= 0x8000000) |
| 768 | goto argc_argv_envp_OK; |
| 769 | |
| 770 | /* Doesn't look promising. Try offsets for RedHat 6.2 |
| 771 | (glibc-2.1.3) instead. In this case, the argv and envp vectors |
| 772 | are actually on the stack (bizarrely). */ |
| 773 | |
| 774 | VG_(client_argc) = (Int) ( ((void**)VG_(esp_at_startup)) [4] ); |
| 775 | VG_(client_argv) = (Char**) & ( ((void**)VG_(esp_at_startup)) [5] ); |
| 776 | VG_(client_envp) |
| 777 | = (Char**) & ( ((void**)VG_(esp_at_startup)) [6 + VG_(client_argc)] ); |
| 778 | |
| 779 | if ( ((UInt)VG_(client_argc)) > 0 && |
| 780 | ((UInt)VG_(client_argc)) < 10000 && |
| 781 | (Addr)VG_(client_argv) >= 0x8000000 && |
| 782 | (Addr)VG_(client_envp) >= 0x8000000) |
| 783 | goto argc_argv_envp_OK; |
| 784 | |
| 785 | /* Here's yet another variant, from <hansen> (irc.kde.org). */ |
| 786 | |
| 787 | VG_(client_argc) = (Int) ( ((void**)VG_(esp_at_startup)) [9] ); |
| 788 | VG_(client_argv) = (Char**) & ( ((void**)VG_(esp_at_startup)) [10] ); |
| 789 | VG_(client_envp) |
| 790 | = (Char**) & ( ((void**)VG_(esp_at_startup)) [11 + VG_(client_argc)] ); |
| 791 | |
| 792 | if ( ((UInt)VG_(client_argc)) > 0 && |
| 793 | ((UInt)VG_(client_argc)) < 10000 && |
| 794 | (Addr)VG_(client_argv) >= 0x8000000 && |
| 795 | (Addr)VG_(client_envp) >= 0x8000000) |
| 796 | goto argc_argv_envp_OK; |
| 797 | |
| 798 | /* VG_(printf)("%d %p %p\n", VG_(client_argc), VG_(client_argv), |
| 799 | VG_(client_envp)); |
| 800 | */ |
| 801 | /* We're hosed. Give up :-( */ |
| 802 | config_error( |
| 803 | "Can't get plausible values for client's argc/argv/envp.\n\t" |
| 804 | "You may be able to fix this; see process_cmd_line_options()\n\t" |
| 805 | "in vg_main.c" |
| 806 | ); |
| 807 | /* NOTREACHED */ |
| 808 | |
| 809 | argc_argv_envp_OK: |
| 810 | |
| 811 | /* Now that VG_(client_envp) has been set, we can extract the args |
| 812 | for Valgrind itself. Copy into global var so that we don't have to |
| 813 | write zeroes to the getenv'd value itself. */ |
| 814 | str = VG_(getenv)("VG_ARGS"); |
| 815 | argc = 0; |
| 816 | |
| 817 | if (!str) { |
| 818 | config_error("Can't read options from env var VG_ARGS."); |
| 819 | } |
| 820 | |
| 821 | if (VG_(strlen)(str) >= M_VG_CMDLINE_STRLEN-1) { |
| 822 | config_error("Command line length exceeds M_CMDLINE_STRLEN."); |
| 823 | } |
| 824 | VG_(strcpy)(vg_cmdline_copy, str); |
| 825 | str = NULL; |
| 826 | |
| 827 | p = &vg_cmdline_copy[0]; |
| 828 | while (True) { |
| 829 | while (ISSPACE(*p)) { *p = 0; p++; } |
| 830 | if (*p == 0) break; |
| 831 | if (argc < M_VG_CMDLINE_OPTS-1) { |
| 832 | argv[argc] = p; argc++; |
| 833 | } else { |
| 834 | config_error( |
| 835 | "Found more than M_CMDLINE_OPTS command-line opts."); |
| 836 | } |
| 837 | while (*p != 0 && !ISSPACE(*p)) p++; |
| 838 | } |
| 839 | |
| 840 | for (i = 0; i < argc; i++) { |
| 841 | |
| 842 | if (STREQ(argv[i], "-v") || STREQ(argv[i], "--verbose")) |
| 843 | VG_(clo_verbosity)++; |
| 844 | else if (STREQ(argv[i], "-q") || STREQ(argv[i], "--quiet")) |
| 845 | VG_(clo_verbosity)--; |
| 846 | |
| 847 | else if (STREQ(argv[i], "--gdb-attach=yes")) |
| 848 | VG_(clo_GDB_attach) = True; |
| 849 | else if (STREQ(argv[i], "--gdb-attach=no")) |
| 850 | VG_(clo_GDB_attach) = False; |
| 851 | |
| 852 | else if (STREQ(argv[i], "--demangle=yes")) |
| 853 | VG_(clo_demangle) = True; |
| 854 | else if (STREQ(argv[i], "--demangle=no")) |
| 855 | VG_(clo_demangle) = False; |
| 856 | |
| 857 | else if (STREQ(argv[i], "--partial-loads-ok=yes")) |
| 858 | VG_(clo_partial_loads_ok) = True; |
| 859 | else if (STREQ(argv[i], "--partial-loads-ok=no")) |
| 860 | VG_(clo_partial_loads_ok) = False; |
| 861 | |
| 862 | else if (STREQ(argv[i], "--leak-check=yes")) |
| 863 | VG_(clo_leak_check) = True; |
| 864 | else if (STREQ(argv[i], "--leak-check=no")) |
| 865 | VG_(clo_leak_check) = False; |
| 866 | |
| 867 | else if (STREQ(argv[i], "--show-reachable=yes")) |
| 868 | VG_(clo_show_reachable) = True; |
| 869 | else if (STREQ(argv[i], "--show-reachable=no")) |
| 870 | VG_(clo_show_reachable) = False; |
| 871 | |
| 872 | else if (STREQ(argv[i], "--leak-resolution=low")) |
| 873 | VG_(clo_leak_resolution) = 2; |
| 874 | else if (STREQ(argv[i], "--leak-resolution=med")) |
| 875 | VG_(clo_leak_resolution) = 4; |
| 876 | else if (STREQ(argv[i], "--leak-resolution=high")) |
| 877 | VG_(clo_leak_resolution) = VG_DEEPEST_BACKTRACE; |
| 878 | |
| 879 | else if (STREQ(argv[i], "--sloppy-malloc=yes")) |
| 880 | VG_(clo_sloppy_malloc) = True; |
| 881 | else if (STREQ(argv[i], "--sloppy-malloc=no")) |
| 882 | VG_(clo_sloppy_malloc) = False; |
| 883 | |
| 884 | else if (STREQ(argv[i], "--trace-children=yes")) |
| 885 | VG_(clo_trace_children) = True; |
| 886 | else if (STREQ(argv[i], "--trace-children=no")) |
| 887 | VG_(clo_trace_children) = False; |
| 888 | |
| 889 | else if (STREQ(argv[i], "--workaround-gcc296-bugs=yes")) |
| 890 | VG_(clo_workaround_gcc296_bugs) = True; |
| 891 | else if (STREQ(argv[i], "--workaround-gcc296-bugs=no")) |
| 892 | VG_(clo_workaround_gcc296_bugs) = False; |
| 893 | |
| 894 | else if (STREQN(15, argv[i], "--sanity-level=")) |
| 895 | VG_(sanity_level) = (Int)VG_(atoll)(&argv[i][15]); |
| 896 | |
| 897 | else if (STREQN(13, argv[i], "--logfile-fd=")) |
| 898 | eventually_logfile_fd = (Int)VG_(atoll)(&argv[i][13]); |
| 899 | |
| 900 | else if (STREQN(15, argv[i], "--freelist-vol=")) { |
| 901 | VG_(clo_freelist_vol) = (Int)VG_(atoll)(&argv[i][15]); |
| 902 | if (VG_(clo_freelist_vol) < 0) VG_(clo_freelist_vol) = 2; |
| 903 | } |
| 904 | |
| 905 | else if (STREQN(15, argv[i], "--suppressions=")) { |
| 906 | if (VG_(clo_n_suppressions) >= VG_CLO_MAX_SFILES) { |
| 907 | VG_(message)(Vg_UserMsg, "Too many logfiles specified."); |
| 908 | VG_(message)(Vg_UserMsg, |
| 909 | "Increase VG_CLO_MAX_SFILES and recompile."); |
| 910 | bad_option(argv[i]); |
| 911 | } |
| 912 | VG_(clo_suppressions)[VG_(clo_n_suppressions)] = &argv[i][15]; |
| 913 | VG_(clo_n_suppressions)++; |
| 914 | } |
| 915 | else if (STREQ(argv[i], "--single-step=yes")) |
| 916 | VG_(clo_single_step) = True; |
| 917 | else if (STREQ(argv[i], "--single-step=no")) |
| 918 | VG_(clo_single_step) = False; |
| 919 | |
| 920 | else if (STREQ(argv[i], "--optimise=yes")) |
| 921 | VG_(clo_optimise) = True; |
| 922 | else if (STREQ(argv[i], "--optimise=no")) |
| 923 | VG_(clo_optimise) = False; |
| 924 | |
| 925 | else if (STREQ(argv[i], "--instrument=yes")) |
| 926 | VG_(clo_instrument) = True; |
| 927 | else if (STREQ(argv[i], "--instrument=no")) |
| 928 | VG_(clo_instrument) = False; |
| 929 | |
| 930 | else if (STREQ(argv[i], "--cleanup=yes")) |
| 931 | VG_(clo_cleanup) = True; |
| 932 | else if (STREQ(argv[i], "--cleanup=no")) |
| 933 | VG_(clo_cleanup) = False; |
| 934 | |
| 935 | else if (STREQ(argv[i], "--client-perms=yes")) |
| 936 | VG_(clo_client_perms) = True; |
| 937 | else if (STREQ(argv[i], "--client-perms=no")) |
| 938 | VG_(clo_client_perms) = False; |
| 939 | |
| 940 | else if (STREQ(argv[i], "--smc-check=none")) |
| 941 | VG_(clo_smc_check) = VG_CLO_SMC_NONE; |
| 942 | else if (STREQ(argv[i], "--smc-check=some")) |
| 943 | VG_(clo_smc_check) = VG_CLO_SMC_SOME; |
| 944 | else if (STREQ(argv[i], "--smc-check=all")) |
| 945 | VG_(clo_smc_check) = VG_CLO_SMC_ALL; |
| 946 | |
| 947 | else if (STREQ(argv[i], "--trace-syscalls=yes")) |
| 948 | VG_(clo_trace_syscalls) = True; |
| 949 | else if (STREQ(argv[i], "--trace-syscalls=no")) |
| 950 | VG_(clo_trace_syscalls) = False; |
| 951 | |
| 952 | else if (STREQ(argv[i], "--trace-signals=yes")) |
| 953 | VG_(clo_trace_signals) = True; |
| 954 | else if (STREQ(argv[i], "--trace-signals=no")) |
| 955 | VG_(clo_trace_signals) = False; |
| 956 | |
| 957 | else if (STREQ(argv[i], "--trace-symtab=yes")) |
| 958 | VG_(clo_trace_symtab) = True; |
| 959 | else if (STREQ(argv[i], "--trace-symtab=no")) |
| 960 | VG_(clo_trace_symtab) = False; |
| 961 | |
| 962 | else if (STREQ(argv[i], "--trace-malloc=yes")) |
| 963 | VG_(clo_trace_malloc) = True; |
| 964 | else if (STREQ(argv[i], "--trace-malloc=no")) |
| 965 | VG_(clo_trace_malloc) = False; |
| 966 | |
| 967 | else if (STREQN(13, argv[i], "--stop-after=")) |
| 968 | VG_(clo_stop_after) = VG_(atoll)(&argv[i][13]); |
| 969 | |
| 970 | else if (STREQN(13, argv[i], "--dump-error=")) |
| 971 | VG_(clo_dump_error) = (Int)VG_(atoll)(&argv[i][13]); |
| 972 | |
| 973 | else if (STREQN(14, argv[i], "--num-callers=")) { |
| 974 | /* Make sure it's sane. */ |
| 975 | VG_(clo_backtrace_size) = (Int)VG_(atoll)(&argv[i][14]); |
| 976 | if (VG_(clo_backtrace_size) < 2) |
| 977 | VG_(clo_backtrace_size) = 2; |
| 978 | if (VG_(clo_backtrace_size) >= VG_DEEPEST_BACKTRACE) |
| 979 | VG_(clo_backtrace_size) = VG_DEEPEST_BACKTRACE; |
| 980 | } |
| 981 | |
| 982 | else |
| 983 | bad_option(argv[i]); |
| 984 | } |
| 985 | |
| 986 | # undef ISSPACE |
| 987 | # undef STREQ |
| 988 | # undef STREQN |
| 989 | |
| 990 | if (VG_(clo_verbosity < 0)) |
| 991 | VG_(clo_verbosity) = 0; |
| 992 | |
| 993 | if (VG_(clo_GDB_attach) && VG_(clo_trace_children)) { |
| 994 | VG_(message)(Vg_UserMsg, ""); |
| 995 | VG_(message)(Vg_UserMsg, |
| 996 | "--gdb-attach=yes conflicts with --trace-children=yes"); |
| 997 | VG_(message)(Vg_UserMsg, |
| 998 | "Please choose one or the other, but not both."); |
| 999 | bad_option("--gdb-attach=yes and --trace-children=yes"); |
| 1000 | } |
| 1001 | |
| 1002 | if (VG_(clo_client_perms) && !VG_(clo_instrument)) { |
| 1003 | VG_(message)(Vg_UserMsg, ""); |
| 1004 | VG_(message)(Vg_UserMsg, |
| 1005 | "--client-perms=yes requires --instrument=yes"); |
| 1006 | bad_option("--client-perms=yes without --instrument=yes"); |
| 1007 | } |
| 1008 | |
| 1009 | if (VG_(clo_client_perms)) |
| 1010 | vg_assert(VG_(clo_instrument)); |
| 1011 | |
| 1012 | VG_(clo_logfile_fd) = eventually_logfile_fd; |
| 1013 | |
| 1014 | # define STRINGIFY(xx) __STRING(xx) |
| 1015 | if (VG_(clo_verbosity > 0)) |
| 1016 | VG_(message)(Vg_UserMsg, |
| 1017 | "valgrind-%s, a memory error detector for x86 GNU/Linux.", |
| 1018 | STRINGIFY(VG_VERSION)); |
| 1019 | # undef STRINGIFY |
| 1020 | if (VG_(clo_verbosity > 0)) |
| 1021 | VG_(message)(Vg_UserMsg, |
| 1022 | "Copyright (C) 2000-2002, and GNU GPL'd, by Julian Seward."); |
| 1023 | if (VG_(clo_verbosity) > 1) { |
| 1024 | VG_(message)(Vg_UserMsg, "Startup, with flags:"); |
| 1025 | for (i = 0; i < argc; i++) { |
| 1026 | VG_(message)(Vg_UserMsg, " %s", argv[i]); |
| 1027 | } |
| 1028 | } |
| 1029 | |
| 1030 | if (VG_(clo_n_suppressions) == 0) { |
| 1031 | config_error("No error-suppression files were specified."); |
| 1032 | } |
| 1033 | } |
| 1034 | |
| 1035 | |
| 1036 | /* --------------------------------------------------------------------- |
| 1037 | Copying to/from m_state_static. |
| 1038 | ------------------------------------------------------------------ */ |
| 1039 | |
| 1040 | UInt VG_(m_state_static) [8 /* int regs, in Intel order */ |
| 1041 | + 1 /* %eflags */ |
| 1042 | + 1 /* %eip */ |
| 1043 | + VG_SIZE_OF_FPUSTATE_W /* FPU state */ |
| 1044 | ]; |
| 1045 | |
| 1046 | void VG_(copy_baseBlock_to_m_state_static) ( void ) |
| 1047 | { |
| 1048 | Int i; |
| 1049 | VG_(m_state_static)[ 0/4] = VG_(baseBlock)[VGOFF_(m_eax)]; |
| 1050 | VG_(m_state_static)[ 4/4] = VG_(baseBlock)[VGOFF_(m_ecx)]; |
| 1051 | VG_(m_state_static)[ 8/4] = VG_(baseBlock)[VGOFF_(m_edx)]; |
| 1052 | VG_(m_state_static)[12/4] = VG_(baseBlock)[VGOFF_(m_ebx)]; |
| 1053 | VG_(m_state_static)[16/4] = VG_(baseBlock)[VGOFF_(m_esp)]; |
| 1054 | VG_(m_state_static)[20/4] = VG_(baseBlock)[VGOFF_(m_ebp)]; |
| 1055 | VG_(m_state_static)[24/4] = VG_(baseBlock)[VGOFF_(m_esi)]; |
| 1056 | VG_(m_state_static)[28/4] = VG_(baseBlock)[VGOFF_(m_edi)]; |
| 1057 | |
| 1058 | VG_(m_state_static)[32/4] = VG_(baseBlock)[VGOFF_(m_eflags)]; |
| 1059 | VG_(m_state_static)[36/4] = VG_(baseBlock)[VGOFF_(m_eip)]; |
| 1060 | |
| 1061 | for (i = 0; i < VG_SIZE_OF_FPUSTATE_W; i++) |
| 1062 | VG_(m_state_static)[40/4 + i] |
| 1063 | = VG_(baseBlock)[VGOFF_(m_fpustate) + i]; |
| 1064 | } |
| 1065 | |
| 1066 | |
| 1067 | void VG_(copy_m_state_static_to_baseBlock) ( void ) |
| 1068 | { |
| 1069 | Int i; |
| 1070 | VG_(baseBlock)[VGOFF_(m_eax)] = VG_(m_state_static)[ 0/4]; |
| 1071 | VG_(baseBlock)[VGOFF_(m_ecx)] = VG_(m_state_static)[ 4/4]; |
| 1072 | VG_(baseBlock)[VGOFF_(m_edx)] = VG_(m_state_static)[ 8/4]; |
| 1073 | VG_(baseBlock)[VGOFF_(m_ebx)] = VG_(m_state_static)[12/4]; |
| 1074 | VG_(baseBlock)[VGOFF_(m_esp)] = VG_(m_state_static)[16/4]; |
| 1075 | VG_(baseBlock)[VGOFF_(m_ebp)] = VG_(m_state_static)[20/4]; |
| 1076 | VG_(baseBlock)[VGOFF_(m_esi)] = VG_(m_state_static)[24/4]; |
| 1077 | VG_(baseBlock)[VGOFF_(m_edi)] = VG_(m_state_static)[28/4]; |
| 1078 | |
| 1079 | VG_(baseBlock)[VGOFF_(m_eflags)] = VG_(m_state_static)[32/4]; |
| 1080 | VG_(baseBlock)[VGOFF_(m_eip)] = VG_(m_state_static)[36/4]; |
| 1081 | |
| 1082 | for (i = 0; i < VG_SIZE_OF_FPUSTATE_W; i++) |
| 1083 | VG_(baseBlock)[VGOFF_(m_fpustate) + i] |
| 1084 | = VG_(m_state_static)[40/4 + i]; |
| 1085 | } |
| 1086 | |
| 1087 | |
| 1088 | /* --------------------------------------------------------------------- |
| 1089 | Show accumulated counts. |
| 1090 | ------------------------------------------------------------------ */ |
| 1091 | |
| 1092 | static void vg_show_counts ( void ) |
| 1093 | { |
| 1094 | VG_(message)(Vg_DebugMsg, |
| 1095 | " dispatch: %lu basic blocks, %d tt_fast misses.", |
| 1096 | VG_(bbs_done), VG_(tt_fast_misses)); |
| 1097 | VG_(message)(Vg_DebugMsg, |
| 1098 | "translate: new %d (%d -> %d), discard %d (%d -> %d).", |
| 1099 | VG_(overall_in_count), |
| 1100 | VG_(overall_in_osize), |
| 1101 | VG_(overall_in_tsize), |
| 1102 | VG_(overall_out_count), |
| 1103 | VG_(overall_out_osize), |
| 1104 | VG_(overall_out_tsize) ); |
| 1105 | VG_(message)(Vg_DebugMsg, |
| 1106 | " lru: %d epochs, %d clearings.", |
| 1107 | VG_(current_epoch), |
| 1108 | VG_(number_of_lrus) ); |
| 1109 | VG_(message)(Vg_DebugMsg, |
| 1110 | "reg-alloc: %d t-req-spill, " |
| 1111 | "%d+%d orig+spill uis, %d total-reg-r.", |
| 1112 | VG_(translations_needing_spill), |
| 1113 | VG_(uinstrs_prealloc), |
| 1114 | VG_(uinstrs_spill), |
| 1115 | VG_(total_reg_rank) ); |
| 1116 | VG_(message)(Vg_DebugMsg, |
| 1117 | "smc-check: %d checks, %d fast pass, " |
| 1118 | "%d slow pass, %d discards.", |
| 1119 | VG_(smc_total_check4s), |
| 1120 | VG_(smc_cache_passed), |
| 1121 | VG_(smc_fancy_passed), |
| 1122 | VG_(smc_discard_count) ); |
| 1123 | VG_(message)(Vg_DebugMsg, |
| 1124 | " sanity: %d cheap, %d expensive checks.", |
| 1125 | VG_(sanity_fast_count), |
| 1126 | VG_(sanity_slow_count) ); |
| 1127 | } |
| 1128 | |
| 1129 | |
| 1130 | /* --------------------------------------------------------------------- |
| 1131 | Main! |
| 1132 | ------------------------------------------------------------------ */ |
| 1133 | |
| 1134 | /* Where we jump to once Valgrind has got control, and the real |
| 1135 | machine's state has been copied to the m_state_static. */ |
| 1136 | |
| 1137 | void VG_(main) ( void ) |
| 1138 | { |
| 1139 | Int i; |
| 1140 | |
| 1141 | /* Set up our stack sanity-check words. */ |
| 1142 | for (i = 0; i < 10; i++) { |
| 1143 | VG_(stack)[i] = (UInt)(&VG_(stack)[i]) ^ 0xA4B3C2D1; |
| 1144 | VG_(stack)[10000-1-i] = (UInt)(&VG_(stack)[10000-i-1]) ^ 0xABCD4321; |
| 1145 | } |
| 1146 | |
| 1147 | /* Set up baseBlock offsets and copy the saved machine's state into |
| 1148 | it. */ |
| 1149 | vg_init_baseBlock(); |
| 1150 | VG_(copy_m_state_static_to_baseBlock)(); |
| 1151 | |
| 1152 | /* Process Valgrind's command-line opts (from env var VG_OPTS). */ |
| 1153 | process_cmd_line_options(); |
| 1154 | |
| 1155 | /* Initialise the signal handling subsystem. */ |
| 1156 | VG_(sigstartup_actions)(); |
| 1157 | |
| 1158 | # ifdef VG_PROFILE |
| 1159 | VGP_(init_profiling)(); |
| 1160 | # endif |
| 1161 | |
sewardj | b3c2687 | 2002-03-24 10:05:14 +0000 | [diff] [blame] | 1162 | /* Hook to delay things long enough so we can get the pid and |
| 1163 | attach GDB in another shell. */ |
| 1164 | /* {extern unsigned int sleep(unsigned int seconds); sleep(10);} */ |
| 1165 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1166 | if (VG_(clo_instrument)) { |
| 1167 | VGP_PUSHCC(VgpInitAudit); |
| 1168 | VGM_(init_memory_audit)(); |
| 1169 | VGP_POPCC; |
| 1170 | VGP_PUSHCC(VgpReadSyms); |
| 1171 | VG_(read_symbols)(); |
| 1172 | VGP_POPCC; |
| 1173 | } |
| 1174 | |
| 1175 | /* This should come after init_memory_audit; otherwise the latter |
| 1176 | carefully sets up the permissions maps to cover the anonymous |
| 1177 | mmaps for the translation table and translation cache, which |
| 1178 | wastes > 20M of virtual address space. */ |
| 1179 | VG_(init_transtab_and_SMC)(); |
| 1180 | |
| 1181 | if (VG_(clo_verbosity) == 1) { |
| 1182 | VG_(message)(Vg_UserMsg, |
| 1183 | "For more details, rerun with: -v"); |
| 1184 | } |
| 1185 | |
| 1186 | /* Now it is safe for malloc et al in vg_clientmalloc.c to act |
| 1187 | instrumented-ly. */ |
| 1188 | VG_(running_on_simd_CPU) = True; |
| 1189 | if (VG_(clo_instrument)) { |
| 1190 | VGM_(make_readable) ( (Addr)&VG_(running_on_simd_CPU), 1 ); |
| 1191 | VGM_(make_readable) ( (Addr)&VG_(clo_instrument), 1 ); |
| 1192 | VGM_(make_readable) ( (Addr)&VG_(clo_trace_malloc), 1 ); |
| 1193 | VGM_(make_readable) ( (Addr)&VG_(clo_sloppy_malloc), 1 ); |
| 1194 | } |
| 1195 | |
| 1196 | if (VG_(clo_verbosity) > 0) |
| 1197 | VG_(message)(Vg_UserMsg, ""); |
| 1198 | |
| 1199 | VG_(bbs_to_go) = VG_(clo_stop_after); |
| 1200 | VG_(toploop)(); |
| 1201 | |
| 1202 | if (VG_(clo_verbosity) > 0) |
| 1203 | VG_(message)(Vg_UserMsg, ""); |
| 1204 | |
| 1205 | if (VG_(clo_instrument)) { |
| 1206 | VG_(show_all_errors)(); |
| 1207 | VG_(clientmalloc_done)(); |
| 1208 | if (VG_(clo_verbosity) == 1) { |
| 1209 | VG_(message)(Vg_UserMsg, |
| 1210 | "For counts of detected errors, rerun with: -v"); |
| 1211 | } |
| 1212 | if (VG_(clo_leak_check)) VG_(detect_memory_leaks)(); |
| 1213 | } |
| 1214 | VG_(running_on_simd_CPU) = False; |
| 1215 | |
| 1216 | VG_(do_sanity_checks)(True /*include expensive checks*/ ); |
| 1217 | |
| 1218 | if (VG_(clo_verbosity) > 1) |
| 1219 | vg_show_counts(); |
| 1220 | |
| 1221 | if (0) { |
| 1222 | VG_(message)(Vg_DebugMsg, ""); |
| 1223 | VG_(message)(Vg_DebugMsg, |
| 1224 | "------ Valgrind's internal memory use stats follow ------" ); |
| 1225 | VG_(mallocSanityCheckAll)(); |
| 1226 | VG_(show_all_arena_stats)(); |
| 1227 | VG_(message)(Vg_DebugMsg, |
| 1228 | "------ Valgrind's ExeContext management stats follow ------" ); |
| 1229 | VG_(show_ExeContext_stats)(); |
| 1230 | VG_(message)(Vg_DebugMsg, |
| 1231 | "------ Valgrind's client block stats follow ---------------" ); |
| 1232 | VG_(show_client_block_stats)(); |
| 1233 | } |
| 1234 | |
| 1235 | # ifdef VG_PROFILE |
| 1236 | VGP_(done_profiling)(); |
| 1237 | # endif |
| 1238 | |
| 1239 | VG_(done_prof_mem)(); |
| 1240 | |
| 1241 | VG_(shutdown_logging)(); |
| 1242 | |
| 1243 | /* In LD_PRELOAD, convert "valgrind.so" into "valgrinq.so", so that |
| 1244 | child processes don't get traced into. Also done on simulated |
| 1245 | execve system call. */ |
| 1246 | if (!VG_(clo_trace_children)) { |
| 1247 | VG_(mash_LD_PRELOAD_string)(VG_(getenv)("LD_PRELOAD")); |
| 1248 | } |
| 1249 | |
| 1250 | /* Prepare to restore state to the real CPU. */ |
| 1251 | VG_(copy_baseBlock_to_m_state_static)(); |
| 1252 | |
| 1253 | /* This pushes a return address on the simulator's stack, which |
| 1254 | is abandoned. We call vg_sigshutdown_actions() at the end |
| 1255 | of vg_switch_to_real_CPU(), so as to ensure that the original |
| 1256 | stack and machine state is restored before the real signal |
| 1257 | mechanism is restored. |
| 1258 | */ |
| 1259 | VG_(switch_to_real_CPU)(); |
| 1260 | } |
| 1261 | |
| 1262 | |
| 1263 | /* Debugging thing .. can be called from assembly with OYNK macro. */ |
| 1264 | void VG_(oynk) ( Int n ) |
| 1265 | { |
| 1266 | OINK(n); |
| 1267 | } |
| 1268 | |
| 1269 | |
| 1270 | /* Find "valgrind.so" in a LD_PRELOAD=... string, and convert it to |
| 1271 | "valgrinq.so", which doesn't do anything. This is used to avoid |
| 1272 | tracing into child processes. To make this work the build system |
| 1273 | also supplies a dummy file, "valgrinq.so". |
| 1274 | */ |
| 1275 | void VG_(mash_LD_PRELOAD_string)( Char* ld_preload_str ) |
| 1276 | { |
| 1277 | Char* p; |
| 1278 | if (ld_preload_str == NULL) |
| 1279 | return; |
| 1280 | p = VG_(strstr)(ld_preload_str, "valgrind.so"); |
| 1281 | if (p == NULL) |
| 1282 | return; |
| 1283 | p[7] = 'q'; |
| 1284 | } |
| 1285 | |
| 1286 | /* RUNS ON THE CLIENT'S STACK, but on the real CPU. Start GDB and get |
| 1287 | it to attach to this process. Called if the user requests this |
| 1288 | service after an error has been shown, so she can poke around and |
| 1289 | look at parameters, memory, etc. You can't meaningfully get GDB to |
| 1290 | continue the program, though; to continue, quit GDB. */ |
| 1291 | extern void VG_(start_GDB_whilst_on_client_stack) ( void ) |
| 1292 | { |
| 1293 | UChar buf[100]; |
| 1294 | VG_(sprintf)(buf, |
| 1295 | "/usr/bin/gdb -nw /proc/%d/exe %d", |
| 1296 | VG_(getpid)(), VG_(getpid)()); |
| 1297 | VG_(printf)("starting GDB with cmd: %s\n", buf); |
| 1298 | VG_(mash_LD_PRELOAD_string)(VG_(getenv)("LD_PRELOAD")); |
| 1299 | { /* HACK ALERT */ |
| 1300 | extern int system ( const char * ); |
| 1301 | system(buf); |
| 1302 | /* end of HACK ALERT */ |
| 1303 | } |
| 1304 | VG_(message)(Vg_UserMsg, ""); |
| 1305 | VG_(message)(Vg_UserMsg, |
| 1306 | "GDB has detached. Valgrind regains control. We continue."); |
| 1307 | } |
| 1308 | |
| 1309 | |
| 1310 | /* Print some helpful-ish text about unimplemented things, and give |
| 1311 | up. */ |
| 1312 | extern void VG_(unimplemented) ( Char* msg ) |
| 1313 | { |
| 1314 | VG_(message)(Vg_UserMsg, ""); |
| 1315 | VG_(message)(Vg_UserMsg, |
| 1316 | "Valgrind detected that your program requires"); |
| 1317 | VG_(message)(Vg_UserMsg, |
| 1318 | "the following unimplemented functionality:"); |
| 1319 | VG_(message)(Vg_UserMsg, " %s", msg); |
| 1320 | VG_(message)(Vg_UserMsg, |
| 1321 | "This may be because the functionality is hard to implement,"); |
| 1322 | VG_(message)(Vg_UserMsg, |
| 1323 | "or because no reasonable program would behave this way,"); |
| 1324 | VG_(message)(Vg_UserMsg, |
| 1325 | "or because nobody has yet needed it. In any case, let me know"); |
| 1326 | VG_(message)(Vg_UserMsg, |
| 1327 | "(jseward@acm.org) and/or try to work around the problem, if you can."); |
| 1328 | VG_(message)(Vg_UserMsg, |
| 1329 | ""); |
| 1330 | VG_(message)(Vg_UserMsg, |
| 1331 | "Valgrind has to exit now. Sorry. Bye!"); |
| 1332 | VG_(message)(Vg_UserMsg, |
| 1333 | ""); |
| 1334 | VG_(exit)(1); |
| 1335 | } |
| 1336 | |
| 1337 | |
| 1338 | /*-------------------------------------------------------------*/ |
| 1339 | /*--- Replace some C lib things with equivs which don't get ---*/ |
| 1340 | /*--- spurious value warnings. THEY RUN ON SIMD CPU! ---*/ |
| 1341 | /*-------------------------------------------------------------*/ |
| 1342 | |
| 1343 | char* strrchr ( const char* s, int c ) |
| 1344 | { |
| 1345 | UChar ch = (UChar)((UInt)c); |
| 1346 | UChar* p = (UChar*)s; |
| 1347 | UChar* last = NULL; |
| 1348 | while (True) { |
| 1349 | if (*p == ch) last = p; |
| 1350 | if (*p == 0) return last; |
| 1351 | p++; |
| 1352 | } |
| 1353 | } |
| 1354 | |
| 1355 | char* strchr ( const char* s, int c ) |
| 1356 | { |
| 1357 | UChar ch = (UChar)((UInt)c); |
| 1358 | UChar* p = (UChar*)s; |
| 1359 | while (True) { |
| 1360 | if (*p == ch) return p; |
| 1361 | if (*p == 0) return NULL; |
| 1362 | p++; |
| 1363 | } |
| 1364 | } |
| 1365 | |
| 1366 | char* strcat ( char* dest, const char* src ) |
| 1367 | { |
| 1368 | Char* dest_orig = dest; |
| 1369 | while (*dest) dest++; |
| 1370 | while (*src) *dest++ = *src++; |
| 1371 | *dest = 0; |
| 1372 | return dest_orig; |
| 1373 | } |
| 1374 | |
| 1375 | unsigned int strlen ( const char* str ) |
| 1376 | { |
| 1377 | UInt i = 0; |
| 1378 | while (str[i] != 0) i++; |
| 1379 | return i; |
| 1380 | } |
| 1381 | |
| 1382 | char* strcpy ( char* dest, const char* src ) |
| 1383 | { |
| 1384 | Char* dest_orig = dest; |
| 1385 | while (*src) *dest++ = *src++; |
| 1386 | *dest = 0; |
| 1387 | return dest_orig; |
| 1388 | } |
| 1389 | |
| 1390 | int strncmp ( const char* s1, const char* s2, unsigned int nmax ) |
| 1391 | { |
| 1392 | unsigned int n = 0; |
| 1393 | while (True) { |
| 1394 | if (n >= nmax) return 0; |
| 1395 | if (*s1 == 0 && *s2 == 0) return 0; |
| 1396 | if (*s1 == 0) return -1; |
| 1397 | if (*s2 == 0) return 1; |
| 1398 | |
| 1399 | if (*(UChar*)s1 < *(UChar*)s2) return -1; |
| 1400 | if (*(UChar*)s1 > *(UChar*)s2) return 1; |
| 1401 | |
| 1402 | s1++; s2++; n++; |
| 1403 | } |
| 1404 | } |
| 1405 | |
| 1406 | int strcmp ( const char* s1, const char* s2 ) |
| 1407 | { |
| 1408 | while (True) { |
| 1409 | if (*s1 == 0 && *s2 == 0) return 0; |
| 1410 | if (*s1 == 0) return -1; |
| 1411 | if (*s2 == 0) return 1; |
| 1412 | |
| 1413 | if (*(char*)s1 < *(char*)s2) return -1; |
| 1414 | if (*(char*)s1 > *(char*)s2) return 1; |
| 1415 | |
| 1416 | s1++; s2++; |
| 1417 | } |
| 1418 | } |
| 1419 | |
| 1420 | void* memchr(const void *s, int c, unsigned int n) |
| 1421 | { |
| 1422 | unsigned int i; |
| 1423 | UChar c0 = (UChar)c; |
| 1424 | UChar* p = (UChar*)s; |
| 1425 | for (i = 0; i < n; i++) |
| 1426 | if (p[i] == c0) return (void*)(&p[i]); |
| 1427 | return NULL; |
| 1428 | } |
| 1429 | |
| 1430 | void* memcpy( void *dst, const void *src, unsigned int len ) |
| 1431 | { |
| 1432 | register char *d; |
| 1433 | register char *s; |
| 1434 | if ( dst > src ) { |
| 1435 | d = (char *)dst + len - 1; |
| 1436 | s = (char *)src + len - 1; |
| 1437 | while ( len-- ) |
| 1438 | *d-- = *s--; |
| 1439 | } else if ( dst < src ) { |
| 1440 | d = (char *)dst; |
| 1441 | s = (char *)src; |
| 1442 | while ( len-- ) |
| 1443 | *d++ = *s++; |
| 1444 | } |
| 1445 | return dst; |
| 1446 | } |
| 1447 | |
| 1448 | /*--------------------------------------------------------------------*/ |
| 1449 | /*--- end vg_main.c ---*/ |
| 1450 | /*--------------------------------------------------------------------*/ |