| |
| /*--------------------------------------------------------------------*/ |
| /*--- C startup stuff, reached from vg_startup.S. ---*/ |
| /*--- vg_main.c ---*/ |
| /*--------------------------------------------------------------------*/ |
| |
| /* |
| This file is part of Valgrind, an extensible x86 protected-mode |
| emulator for monitoring program execution on x86-Unixes. |
| |
| Copyright (C) 2000-2003 Julian Seward |
| jseward@acm.org |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License as |
| published by the Free Software Foundation; either version 2 of the |
| License, or (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307, USA. |
| |
| The GNU General Public License is contained in the file COPYING. |
| */ |
| |
| #include "vg_include.h" |
| |
| /* --------------------------------------------------------------------- |
| Compute offsets into baseBlock. See comments in vg_include.h. |
| ------------------------------------------------------------------ */ |
| |
| /* The variables storing offsets. */ |
| |
| #define INVALID_OFFSET (-1) |
| |
| Int VGOFF_(m_eax) = INVALID_OFFSET; |
| Int VGOFF_(m_ecx) = INVALID_OFFSET; |
| Int VGOFF_(m_edx) = INVALID_OFFSET; |
| Int VGOFF_(m_ebx) = INVALID_OFFSET; |
| Int VGOFF_(m_esp) = INVALID_OFFSET; |
| Int VGOFF_(m_ebp) = INVALID_OFFSET; |
| Int VGOFF_(m_esi) = INVALID_OFFSET; |
| Int VGOFF_(m_edi) = INVALID_OFFSET; |
| Int VGOFF_(m_eflags) = INVALID_OFFSET; |
| Int VGOFF_(m_dflag) = INVALID_OFFSET; |
| Int VGOFF_(m_ssestate) = INVALID_OFFSET; |
| Int VGOFF_(ldt) = INVALID_OFFSET; |
| Int VGOFF_(m_cs) = INVALID_OFFSET; |
| Int VGOFF_(m_ss) = INVALID_OFFSET; |
| Int VGOFF_(m_ds) = INVALID_OFFSET; |
| Int VGOFF_(m_es) = INVALID_OFFSET; |
| Int VGOFF_(m_fs) = INVALID_OFFSET; |
| Int VGOFF_(m_gs) = INVALID_OFFSET; |
| Int VGOFF_(m_eip) = INVALID_OFFSET; |
| Int VGOFF_(spillslots) = INVALID_OFFSET; |
| Int VGOFF_(sh_eax) = INVALID_OFFSET; |
| Int VGOFF_(sh_ecx) = INVALID_OFFSET; |
| Int VGOFF_(sh_edx) = INVALID_OFFSET; |
| Int VGOFF_(sh_ebx) = INVALID_OFFSET; |
| Int VGOFF_(sh_esp) = INVALID_OFFSET; |
| Int VGOFF_(sh_ebp) = INVALID_OFFSET; |
| Int VGOFF_(sh_esi) = INVALID_OFFSET; |
| Int VGOFF_(sh_edi) = INVALID_OFFSET; |
| Int VGOFF_(sh_eflags) = INVALID_OFFSET; |
| |
| Int VGOFF_(helper_idiv_64_32) = INVALID_OFFSET; |
| Int VGOFF_(helper_div_64_32) = INVALID_OFFSET; |
| Int VGOFF_(helper_idiv_32_16) = INVALID_OFFSET; |
| Int VGOFF_(helper_div_32_16) = INVALID_OFFSET; |
| Int VGOFF_(helper_idiv_16_8) = INVALID_OFFSET; |
| Int VGOFF_(helper_div_16_8) = INVALID_OFFSET; |
| Int VGOFF_(helper_imul_32_64) = INVALID_OFFSET; |
| Int VGOFF_(helper_mul_32_64) = INVALID_OFFSET; |
| Int VGOFF_(helper_imul_16_32) = INVALID_OFFSET; |
| Int VGOFF_(helper_mul_16_32) = INVALID_OFFSET; |
| Int VGOFF_(helper_imul_8_16) = INVALID_OFFSET; |
| Int VGOFF_(helper_mul_8_16) = INVALID_OFFSET; |
| Int VGOFF_(helper_CLD) = INVALID_OFFSET; |
| Int VGOFF_(helper_STD) = INVALID_OFFSET; |
| Int VGOFF_(helper_get_dirflag) = INVALID_OFFSET; |
| Int VGOFF_(helper_CLC) = INVALID_OFFSET; |
| Int VGOFF_(helper_STC) = INVALID_OFFSET; |
| Int VGOFF_(helper_shldl) = INVALID_OFFSET; |
| Int VGOFF_(helper_shldw) = INVALID_OFFSET; |
| Int VGOFF_(helper_shrdl) = INVALID_OFFSET; |
| Int VGOFF_(helper_shrdw) = INVALID_OFFSET; |
| Int VGOFF_(helper_IN) = INVALID_OFFSET; |
| Int VGOFF_(helper_OUT) = INVALID_OFFSET; |
| Int VGOFF_(helper_RDTSC) = INVALID_OFFSET; |
| Int VGOFF_(helper_CPUID) = INVALID_OFFSET; |
| Int VGOFF_(helper_BSWAP) = INVALID_OFFSET; |
| Int VGOFF_(helper_bsf) = INVALID_OFFSET; |
| Int VGOFF_(helper_bsr) = INVALID_OFFSET; |
| Int VGOFF_(helper_fstsw_AX) = INVALID_OFFSET; |
| Int VGOFF_(helper_SAHF) = INVALID_OFFSET; |
| Int VGOFF_(helper_LAHF) = INVALID_OFFSET; |
| Int VGOFF_(helper_DAS) = INVALID_OFFSET; |
| Int VGOFF_(helper_DAA) = INVALID_OFFSET; |
| Int VGOFF_(helper_cmpxchg8b) = INVALID_OFFSET; |
| Int VGOFF_(helper_undefined_instruction) = INVALID_OFFSET; |
| |
| /* MAX_NONCOMPACT_HELPERS can be increased easily. If MAX_COMPACT_HELPERS is |
| * increased too much, they won't really be compact any more... */ |
| #define MAX_COMPACT_HELPERS 8 |
| #define MAX_NONCOMPACT_HELPERS 50 |
| |
| UInt VG_(n_compact_helpers) = 0; |
| UInt VG_(n_noncompact_helpers) = 0; |
| |
| Addr VG_(compact_helper_addrs) [MAX_COMPACT_HELPERS]; |
| Int VG_(compact_helper_offsets)[MAX_COMPACT_HELPERS]; |
| Addr VG_(noncompact_helper_addrs) [MAX_NONCOMPACT_HELPERS]; |
| Int VG_(noncompact_helper_offsets)[MAX_NONCOMPACT_HELPERS]; |
| |
| /* This is the actual defn of baseblock. */ |
| UInt VG_(baseBlock)[VG_BASEBLOCK_WORDS]; |
| |
| /* Client address space */ |
| Addr VG_(client_base); /* client address space limits */ |
| Addr VG_(client_end); |
| Addr VG_(client_mapbase); |
| Addr VG_(client_trampoline_code); |
| Addr VG_(clstk_base); |
| Addr VG_(clstk_end); |
| Addr VG_(brk_base); /* start of brk */ |
| Addr VG_(brk_limit); /* current brk */ |
| Addr VG_(shadow_base); /* skin's shadow memory */ |
| Addr VG_(shadow_end); |
| Addr VG_(valgrind_base); /* valgrind's address range */ |
| Addr VG_(valgrind_mmap_end); /* valgrind's mmaps are between valgrind_base and here */ |
| Addr VG_(valgrind_end); |
| |
| /* stage1 (main) executable */ |
| Int VG_(vgexecfd) = -1; |
| |
| /* client executable */ |
| Int VG_(clexecfd) = -1; |
| |
| /* Path to library directory */ |
| const Char *VG_(libdir) = VG_LIBDIR; |
| |
| /* our argc/argv */ |
| Int VG_(vg_argc); |
| Char **VG_(vg_argv); |
| |
| /* PID of the main thread */ |
| Int VG_(main_pid); |
| |
| /* PGRP of process */ |
| Int VG_(main_pgrp); |
| |
| /* Maximum allowed application-visible file descriptor */ |
| Int VG_(max_fd) = -1; |
| |
| /* Words. */ |
| static Int baB_off = 0; |
| |
| /* jmp_buf for fatal signals */ |
| Int VG_(fatal_sigNo) = -1; |
| Bool VG_(fatal_signal_set) = False; |
| jmp_buf VG_(fatal_signal_jmpbuf); |
| |
| /* Returns the offset, in words. */ |
| static Int alloc_BaB ( Int words ) |
| { |
| Int off = baB_off; |
| baB_off += words; |
| if (baB_off >= VG_BASEBLOCK_WORDS) |
| VG_(core_panic)( "alloc_BaB: baseBlock is too small"); |
| |
| return off; |
| } |
| |
| /* Align offset, in *bytes* */ |
| static void align_BaB ( UInt align ) |
| { |
| vg_assert(2 == align || 4 == align || 8 == align || 16 == align); |
| baB_off += (align-1); |
| baB_off &= ~(align-1); |
| } |
| |
| /* Allocate 1 word in baseBlock and set it to the given value. */ |
| static Int alloc_BaB_1_set ( Addr a ) |
| { |
| Int off = alloc_BaB(1); |
| VG_(baseBlock)[off] = (UInt)a; |
| return off; |
| } |
| |
| /* Registers a function in compact_helper_addrs; compact_helper_offsets is |
| filled in later. */ |
| void VG_(register_compact_helper)(Addr a) |
| { |
| if (MAX_COMPACT_HELPERS <= VG_(n_compact_helpers)) { |
| VG_(printf)("Can only register %d compact helpers\n", |
| MAX_COMPACT_HELPERS); |
| VG_(core_panic)("Too many compact helpers registered"); |
| } |
| VG_(compact_helper_addrs)[VG_(n_compact_helpers)] = a; |
| VG_(n_compact_helpers)++; |
| } |
| |
| /* Registers a function in noncompact_helper_addrs; noncompact_helper_offsets |
| * is filled in later. |
| */ |
| void VG_(register_noncompact_helper)(Addr a) |
| { |
| if (MAX_NONCOMPACT_HELPERS <= VG_(n_noncompact_helpers)) { |
| VG_(printf)("Can only register %d non-compact helpers\n", |
| MAX_NONCOMPACT_HELPERS); |
| VG_(printf)("Try increasing MAX_NON_COMPACT_HELPERS\n"); |
| VG_(core_panic)("Too many non-compact helpers registered"); |
| } |
| VG_(noncompact_helper_addrs)[VG_(n_noncompact_helpers)] = a; |
| VG_(n_noncompact_helpers)++; |
| } |
| |
| /* Allocate offsets in baseBlock for the skin helpers */ |
| static |
| void assign_helpers_in_baseBlock(UInt n, Int offsets[], Addr addrs[]) |
| { |
| UInt i; |
| for (i = 0; i < n; i++) |
| offsets[i] = alloc_BaB_1_set( addrs[i] ); |
| } |
| |
| Bool VG_(need_to_handle_esp_assignment)(void) |
| { |
| return ( VG_(defined_new_mem_stack_4)() || |
| VG_(defined_die_mem_stack_4)() || |
| VG_(defined_new_mem_stack_8)() || |
| VG_(defined_die_mem_stack_8)() || |
| VG_(defined_new_mem_stack_12)() || |
| VG_(defined_die_mem_stack_12)() || |
| VG_(defined_new_mem_stack_16)() || |
| VG_(defined_die_mem_stack_16)() || |
| VG_(defined_new_mem_stack_32)() || |
| VG_(defined_die_mem_stack_32)() || |
| VG_(defined_new_mem_stack)() || |
| VG_(defined_die_mem_stack)() |
| ); |
| } |
| |
| /* Here we assign actual offsets. It's important to get the most |
| popular referents within 128 bytes of the start, so we can take |
| advantage of short addressing modes relative to %ebp. Popularity |
| of offsets was measured on 22 Feb 02 running a KDE application, and |
| the slots rearranged accordingly, with a 1.5% reduction in total |
| size of translations. */ |
| static void vg_init_baseBlock ( void ) |
| { |
| /* Those with offsets under 128 are carefully chosen. */ |
| |
| /* WORD offsets in this column */ |
| /* 0 */ VGOFF_(m_eax) = alloc_BaB(1); |
| /* 1 */ VGOFF_(m_ecx) = alloc_BaB(1); |
| /* 2 */ VGOFF_(m_edx) = alloc_BaB(1); |
| /* 3 */ VGOFF_(m_ebx) = alloc_BaB(1); |
| /* 4 */ VGOFF_(m_esp) = alloc_BaB(1); |
| /* 5 */ VGOFF_(m_ebp) = alloc_BaB(1); |
| /* 6 */ VGOFF_(m_esi) = alloc_BaB(1); |
| /* 7 */ VGOFF_(m_edi) = alloc_BaB(1); |
| /* 8 */ VGOFF_(m_eflags) = alloc_BaB(1); |
| |
| if (VG_(needs).shadow_regs) { |
| /* 9 */ VGOFF_(sh_eax) = alloc_BaB(1); |
| /* 10 */ VGOFF_(sh_ecx) = alloc_BaB(1); |
| /* 11 */ VGOFF_(sh_edx) = alloc_BaB(1); |
| /* 12 */ VGOFF_(sh_ebx) = alloc_BaB(1); |
| /* 13 */ VGOFF_(sh_esp) = alloc_BaB(1); |
| /* 14 */ VGOFF_(sh_ebp) = alloc_BaB(1); |
| /* 15 */ VGOFF_(sh_esi) = alloc_BaB(1); |
| /* 16 */ VGOFF_(sh_edi) = alloc_BaB(1); |
| /* 17 */ VGOFF_(sh_eflags) = alloc_BaB(1); |
| } |
| |
| /* 9,10,11 or 18,19,20... depends on number whether shadow regs are used |
| * and on compact helpers registered */ |
| |
| /* Make these most-frequently-called specialised ones compact, if they |
| are used. */ |
| if (VG_(defined_new_mem_stack_4)()) |
| VG_(register_compact_helper)( (Addr) VG_(tool_interface).track_new_mem_stack_4); |
| |
| if (VG_(defined_die_mem_stack_4)()) |
| VG_(register_compact_helper)( (Addr) VG_(tool_interface).track_die_mem_stack_4); |
| |
| /* (9 or 18) + n_compact_helpers */ |
| /* Allocate slots for compact helpers */ |
| assign_helpers_in_baseBlock(VG_(n_compact_helpers), |
| VG_(compact_helper_offsets), |
| VG_(compact_helper_addrs)); |
| |
| /* (9/10 or 18/19) + n_compact_helpers */ |
| VGOFF_(m_eip) = alloc_BaB(1); |
| |
| /* There are currently 24 spill slots */ |
| /* (11+/20+ .. 32+/43+) + n_compact_helpers. This can overlap the magic |
| * boundary at >= 32 words, but most spills are to low numbered spill |
| * slots, so the ones above the boundary don't see much action. */ |
| VGOFF_(spillslots) = alloc_BaB(VG_MAX_SPILLSLOTS); |
| |
| /* I gave up counting at this point. Since they're above the |
| short-amode-boundary, there's no point. */ |
| |
| VGOFF_(m_dflag) = alloc_BaB(1); |
| |
| /* The FPU/SSE state. This _must_ be 16-byte aligned. */ |
| align_BaB(16); |
| VGOFF_(m_ssestate) = alloc_BaB(VG_SIZE_OF_SSESTATE_W); |
| vg_assert( |
| ( ((UInt)(& VG_(baseBlock)[VGOFF_(m_ssestate)])) |
| % 16 ) |
| == 0 |
| ); |
| |
| /* This thread's LDT pointer, and segment registers. */ |
| VGOFF_(ldt) = alloc_BaB(1); |
| VGOFF_(m_cs) = alloc_BaB(1); |
| VGOFF_(m_ss) = alloc_BaB(1); |
| VGOFF_(m_ds) = alloc_BaB(1); |
| VGOFF_(m_es) = alloc_BaB(1); |
| VGOFF_(m_fs) = alloc_BaB(1); |
| VGOFF_(m_gs) = alloc_BaB(1); |
| |
| VG_(register_noncompact_helper)( (Addr) & VG_(do_useseg) ); |
| |
| #define REG(kind, size) \ |
| if (VG_(defined_##kind##_mem_stack##size)()) \ |
| VG_(register_noncompact_helper)( \ |
| (Addr) VG_(tool_interface).track_##kind##_mem_stack##size ); |
| |
| REG(new, _8); |
| REG(new, _12); |
| REG(new, _16); |
| REG(new, _32); |
| REG(new, ); |
| REG(die, _8); |
| REG(die, _12); |
| REG(die, _16); |
| REG(die, _32); |
| REG(die, ); |
| #undef REG |
| |
| if (VG_(need_to_handle_esp_assignment)()) |
| VG_(register_noncompact_helper)((Addr) VG_(unknown_esp_update)); |
| |
| /* Helper functions. */ |
| VGOFF_(helper_idiv_64_32) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_idiv_64_32)); |
| VGOFF_(helper_div_64_32) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_div_64_32)); |
| VGOFF_(helper_idiv_32_16) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_idiv_32_16)); |
| VGOFF_(helper_div_32_16) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_div_32_16)); |
| VGOFF_(helper_idiv_16_8) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_idiv_16_8)); |
| VGOFF_(helper_div_16_8) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_div_16_8)); |
| |
| VGOFF_(helper_imul_32_64) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_imul_32_64)); |
| VGOFF_(helper_mul_32_64) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_mul_32_64)); |
| VGOFF_(helper_imul_16_32) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_imul_16_32)); |
| VGOFF_(helper_mul_16_32) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_mul_16_32)); |
| VGOFF_(helper_imul_8_16) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_imul_8_16)); |
| VGOFF_(helper_mul_8_16) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_mul_8_16)); |
| |
| VGOFF_(helper_CLD) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_CLD)); |
| VGOFF_(helper_STD) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_STD)); |
| VGOFF_(helper_get_dirflag) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_get_dirflag)); |
| |
| VGOFF_(helper_CLC) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_CLC)); |
| VGOFF_(helper_STC) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_STC)); |
| |
| VGOFF_(helper_shldl) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_shldl)); |
| VGOFF_(helper_shldw) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_shldw)); |
| VGOFF_(helper_shrdl) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_shrdl)); |
| VGOFF_(helper_shrdw) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_shrdw)); |
| |
| VGOFF_(helper_RDTSC) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_RDTSC)); |
| VGOFF_(helper_CPUID) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_CPUID)); |
| |
| VGOFF_(helper_bsf) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_bsf)); |
| VGOFF_(helper_bsr) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_bsr)); |
| |
| VGOFF_(helper_fstsw_AX) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_fstsw_AX)); |
| VGOFF_(helper_SAHF) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_SAHF)); |
| VGOFF_(helper_LAHF) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_LAHF)); |
| VGOFF_(helper_DAS) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_DAS)); |
| VGOFF_(helper_DAA) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_DAA)); |
| VGOFF_(helper_IN) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_IN)); |
| VGOFF_(helper_OUT) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_OUT)); |
| VGOFF_(helper_cmpxchg8b) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_cmpxchg8b)); |
| |
| VGOFF_(helper_undefined_instruction) |
| = alloc_BaB_1_set( (Addr) & VG_(helper_undefined_instruction)); |
| |
| /* Allocate slots for noncompact helpers */ |
| assign_helpers_in_baseBlock(VG_(n_noncompact_helpers), |
| VG_(noncompact_helper_offsets), |
| VG_(noncompact_helper_addrs)); |
| |
| |
| /* Initialise slots that require it */ |
| VG_(copy_m_state_static_to_baseBlock)(); |
| |
| /* Pretend the root thread has a completely empty LDT to start with. */ |
| VG_(baseBlock)[VGOFF_(ldt)] = (UInt)NULL; |
| |
| /* Initialise shadow regs */ |
| if (VG_(needs).shadow_regs) { |
| VG_(baseBlock)[VGOFF_(sh_esp)] = |
| VG_(baseBlock)[VGOFF_(sh_ebp)] = |
| VG_(baseBlock)[VGOFF_(sh_eax)] = |
| VG_(baseBlock)[VGOFF_(sh_ecx)] = |
| VG_(baseBlock)[VGOFF_(sh_edx)] = |
| VG_(baseBlock)[VGOFF_(sh_ebx)] = |
| VG_(baseBlock)[VGOFF_(sh_esi)] = |
| VG_(baseBlock)[VGOFF_(sh_edi)] = 0; |
| VG_(baseBlock)[VGOFF_(sh_eflags)] = 0; |
| VG_TRACK( post_regs_write_init ); |
| } |
| } |
| |
| |
| /* --------------------------------------------------------------------- |
| Global entities which are not referenced from generated code. |
| ------------------------------------------------------------------ */ |
| |
| /* Ditto our signal delivery stack. */ |
| UInt VG_(sigstack)[VG_SIGSTACK_SIZE_W]; |
| |
| /* Saving stuff across system calls. */ |
| __attribute__ ((aligned (16))) |
| UInt VG_(real_sse_state_saved_over_syscall)[VG_SIZE_OF_SSESTATE_W]; |
| Addr VG_(esp_saved_over_syscall); |
| |
| /* Counts downwards in vg_run_innerloop. */ |
| UInt VG_(dispatch_ctr); |
| |
| |
| /* 64-bit counter for the number of basic blocks done. */ |
| ULong VG_(bbs_done); |
| /* 64-bit counter for the number of bbs to go before a debug exit. */ |
| ULong VG_(bbs_to_go); |
| |
| /* This is the ThreadId of the last thread the scheduler ran. */ |
| ThreadId VG_(last_run_tid) = 0; |
| |
| /* This is the argument to __NR_exit() supplied by the first thread to |
| call that syscall. We eventually pass that to __NR_exit() for |
| real. */ |
| Int VG_(exitcode) = 0; |
| |
| /* Tell the logging mechanism whether we are logging to a file |
| descriptor or a socket descriptor. */ |
| Bool VG_(logging_to_filedes) = True; |
| |
| /* Is this a SSE/SSE2-capable CPU? If so, we had better save/restore |
| the SSE state all over the place. This is set up very early, in |
| vg_startup.S. We have to determine it early since we can't even |
| correctly snapshot the startup machine state without it. */ |
| /* Initially True. Safer to err on the side of SSEness and get SIGILL |
| than to not notice for some reason that we have SSE and get weird |
| errors later on. */ |
| Bool VG_(have_ssestate) = True; |
| |
| |
| /* --------------------------------------------------------------------- |
| Counters, for informational purposes only. |
| ------------------------------------------------------------------ */ |
| |
| /* Number of lookups which miss the fast tt helper. */ |
| UInt VG_(tt_fast_misses) = 0; |
| |
| |
| /* Counts for TT/TC informational messages. */ |
| |
| /* Number and total o/t size of translations overall. */ |
| UInt VG_(overall_in_count) = 0; |
| UInt VG_(overall_in_osize) = 0; |
| UInt VG_(overall_in_tsize) = 0; |
| /* Number and total o/t size of discards overall. */ |
| UInt VG_(overall_out_count) = 0; |
| UInt VG_(overall_out_osize) = 0; |
| UInt VG_(overall_out_tsize) = 0; |
| /* The number of discards of TT/TC. */ |
| UInt VG_(number_of_tc_discards) = 0; |
| /* Counts of chain and unchain operations done. */ |
| UInt VG_(bb_enchain_count) = 0; |
| UInt VG_(bb_dechain_count) = 0; |
| /* Number of unchained jumps performed. */ |
| UInt VG_(unchained_jumps_done) = 0; |
| |
| |
| /* Counts pertaining to the register allocator. */ |
| |
| /* total number of uinstrs input to reg-alloc */ |
| UInt VG_(uinstrs_prealloc) = 0; |
| |
| /* total number of uinstrs added due to spill code */ |
| UInt VG_(uinstrs_spill) = 0; |
| |
| /* number of bbs requiring spill code */ |
| UInt VG_(translations_needing_spill) = 0; |
| |
| /* total of register ranks over all translations */ |
| UInt VG_(total_reg_rank) = 0; |
| |
| |
| /* Counts pertaining to internal sanity checking. */ |
| UInt VG_(sanity_fast_count) = 0; |
| UInt VG_(sanity_slow_count) = 0; |
| |
| /* Counts pertaining to the scheduler. */ |
| UInt VG_(num_scheduling_events_MINOR) = 0; |
| UInt VG_(num_scheduling_events_MAJOR) = 0; |
| |
| |
| /* --------------------------------------------------------------------- |
| Values derived from command-line options. |
| ------------------------------------------------------------------ */ |
| |
| /* Define, and set defaults. */ |
| Bool VG_(clo_error_limit) = True; |
| Bool VG_(clo_GDB_attach) = False; |
| Char* VG_(clo_GDB_path) = GDB_PATH; |
| Bool VG_(clo_gen_suppressions) = False; |
| Int VG_(sanity_level) = 1; |
| Int VG_(clo_verbosity) = 1; |
| Bool VG_(clo_demangle) = True; |
| Bool VG_(clo_trace_children) = False; |
| |
| /* See big comment in vg_include.h for meaning of these three. |
| fd is initially stdout, for --help, but gets moved to stderr by default |
| immediately afterwards. */ |
| VgLogTo VG_(clo_log_to) = VgLogTo_Fd; |
| Int VG_(clo_logfile_fd) = 1; |
| Char* VG_(clo_logfile_name) = NULL; |
| |
| Int VG_(clo_input_fd) = 0; /* stdin */ |
| Int VG_(clo_n_suppressions) = 0; |
| Char* VG_(clo_suppressions)[VG_CLO_MAX_SFILES]; |
| Bool VG_(clo_profile) = False; |
| Bool VG_(clo_single_step) = False; |
| Bool VG_(clo_optimise) = True; |
| UChar VG_(clo_trace_codegen) = 0; // 00000000b |
| Bool VG_(clo_trace_syscalls) = False; |
| Bool VG_(clo_trace_signals) = False; |
| Bool VG_(clo_trace_symtab) = False; |
| Bool VG_(clo_trace_sched) = False; |
| Int VG_(clo_trace_pthread_level) = 0; |
| ULong VG_(clo_stop_after) = 1000000000000000LL; |
| Int VG_(clo_dump_error) = 0; |
| Int VG_(clo_backtrace_size) = 4; |
| Char* VG_(clo_weird_hacks) = NULL; |
| Bool VG_(clo_run_libc_freeres) = True; |
| Bool VG_(clo_track_fds) = False; |
| Bool VG_(clo_chain_bb) = True; |
| Bool VG_(clo_show_below_main) = False; |
| Bool VG_(clo_pointercheck) = True; |
| Bool VG_(clo_branchpred) = False; |
| |
| static Bool VG_(clo_wait_for_gdb) = False; |
| |
| /* If we're doing signal routing, poll for signals every 50mS by |
| default. */ |
| Int VG_(clo_signal_polltime) = 50; |
| |
| /* These flags reduce thread wakeup latency on syscall completion and |
| signal delivery, respectively. The downside is possible unfairness. */ |
| Bool VG_(clo_lowlat_syscalls) = False; /* low-latency syscalls */ |
| Bool VG_(clo_lowlat_signals) = False; /* low-latency signals */ |
| |
| /* This Bool is needed by wrappers in vg_clientmalloc.c to decide how |
| to behave. Initially we say False. */ |
| Bool VG_(running_on_simd_CPU) = False; |
| |
| /* Holds client's %esp at the point we gained control. */ |
| Addr VG_(esp_at_startup); |
| |
| /* Indicates presence, and holds address of client's sysinfo page, a |
| feature of some modern kernels used to provide vsyscalls, etc. */ |
| Bool VG_(sysinfo_page_exists) = False; |
| Addr VG_(sysinfo_page_addr) = 0; |
| |
| /* As deduced from VG_(esp_at_startup), the client's argc, argv[] and |
| envp[] as extracted from the client's stack at startup-time. */ |
| Int VG_(client_argc); |
| Char** VG_(client_argv); |
| Char** VG_(client_envp); |
| |
| /* --------------------------------------------------------------------- |
| Processing of command-line options. |
| ------------------------------------------------------------------ */ |
| |
| void VG_(bad_option) ( Char* opt ) |
| { |
| VG_(shutdown_logging)(); |
| VG_(clo_log_to) = VgLogTo_Fd; |
| VG_(clo_logfile_fd) = 2; /* stderr */ |
| VG_(printf)("valgrind.so: Bad option `%s'; aborting.\n", opt); |
| VG_(exit)(1); |
| } |
| |
| static void config_error ( Char* msg ) |
| { |
| VG_(shutdown_logging)(); |
| VG_(clo_log_to) = VgLogTo_Fd; |
| VG_(clo_logfile_fd) = 2; /* stderr */ |
| VG_(printf)( |
| "valgrind: Startup or configuration error:\n %s\n", msg); |
| VG_(printf)( |
| "valgrind: Unable to start up properly. Giving up.\n"); |
| VG_(exit)(1); |
| } |
| |
| void VG_(usage) ( void ) |
| { |
| Char* usage1 = |
| "usage: valgrind [options] prog-and-args\n" |
| "\n" |
| " common user options for all Valgrind tools, with defaults in [ ]:\n" |
| " --tool=<name> Use the Valgrind tool named <name> [memcheck]\n" |
| " --help show this message\n" |
| " --version show version\n" |
| " -q --quiet run silently; only print error msgs\n" |
| " -v --verbose be more verbose, incl counts of errors\n" |
| " --trace-children=no|yes Valgrind-ise child processes? [no]\n" |
| " --track-fds=no|yes Track open file descriptors? [no]\n" |
| "\n" |
| " uncommon user options for all Valgrind tools:\n" |
| " --run-libc-freeres=no|yes Free up glibc memory at exit? [yes]\n" |
| " --weird-hacks=hack1,hack2,... [none]\n" |
| " recognised hacks are: ioctl-VTIME truncate-writes lax-ioctls\n" |
| " --signal-polltime=<time> time, in mS, we should poll for signals.\n" |
| " Only applies for older kernels which need\n" |
| " signal routing [50]\n" |
| " --lowlat-signals=no|yes improve wake-up latency when a thread receives\n" |
| " a signal [no]\n" |
| " --lowlat-syscalls=no|yes improve wake-up latency when a thread's\n" |
| " syscall completes [no]\n" |
| " --pointercheck=no|yes enforce client address space limits [yes]\n" |
| "\n" |
| " user options for Valgrind tools that report errors:\n" |
| " --logfile-fd=<number> file descriptor for messages [2=stderr]\n" |
| " --logfile=<file> log messages to <file>.pid<pid>\n" |
| " --logsocket=ipaddr:port log messages to socket ipaddr:port\n" |
| " --demangle=no|yes automatically demangle C++ names? [yes]\n" |
| " --num-callers=<number> show <num> callers in stack traces [4]\n" |
| " --error-limit=no|yes stop showing new errors if too many? [yes]\n" |
| " --show-below-main=no|yes continue stack traces below main() [no]\n" |
| " --suppressions=<filename> suppress errors described in <filename>\n" |
| " --gen-suppressions=no|yes print suppressions for errors detected [no]\n" |
| |
| " --gdb-attach=no|yes start GDB when errors detected? [no]\n" |
| " --gdb-path=/path/to/gdb path to the GDB to use [/usr/bin/gdb]\n" |
| " --input-fd=<number> file descriptor for (gdb) input [0=stdin]\n" |
| "\n"; |
| |
| Char* usage2 = |
| "\n" |
| " debugging options for all Valgrind tools:\n" |
| " --sanity-level=<number> level of sanity checking to do [1]\n" |
| " --single-step=no|yes translate each instr separately? [no]\n" |
| " --optimise=no|yes improve intermediate code? [yes]\n" |
| " --profile=no|yes profile? (tool must be built for it) [no]\n" |
| " --chain-bb=no|yes do basic-block chaining? [yes]\n" |
| " --branchpred=yes|no generate branch prediction hints [no]\n" |
| " --trace-codegen=<XXXXX> show generated code? (X = 0|1) [00000]\n" |
| " --trace-syscalls=no|yes show all system calls? [no]\n" |
| " --trace-signals=no|yes show signal handling details? [no]\n" |
| " --trace-symtab=no|yes show symbol table details? [no]\n" |
| " --trace-sched=no|yes show thread scheduler details? [no]\n" |
| " --trace-pthread=none|some|all show pthread event details? [none]\n" |
| " --stop-after=<number> switch to real CPU after executing\n" |
| " <number> basic blocks [infinity]\n" |
| " --wait-for-gdb=yes|no pause on startup to wait for gdb attach\n" |
| "\n" |
| " debugging options for Valgrind tools that report errors\n" |
| " --dump-error=<number> show translation for basic block associated\n" |
| " with <number>'th error context [0=show none]\n" |
| "\n"; |
| |
| Char* usage3 = |
| "\n" |
| " Extra options are read from env variable $VALGRIND_OPTS\n" |
| "\n" |
| " Valgrind is Copyright (C) 2000-2003 Julian Seward\n" |
| " and licensed under the GNU General Public License, version 2.\n" |
| " Bug reports, feedback, admiration, abuse, etc, to: %s.\n" |
| "\n" |
| " Tools are copyright and licensed by their authors. See each\n" |
| " tool's start-up message for more information.\n" |
| "\n"; |
| |
| VG_(printf)(usage1); |
| if (VG_(details).name) { |
| VG_(printf)(" user options for %s:\n", VG_(details).name); |
| /* Don't print skin string directly for security, ha! */ |
| if (VG_(needs).command_line_options) |
| SK_(print_usage)(); |
| else |
| VG_(printf)(" (none)\n"); |
| } |
| VG_(printf)(usage2); |
| |
| if (VG_(details).name) { |
| VG_(printf)(" debugging options for %s:\n", VG_(details).name); |
| |
| if (VG_(needs).command_line_options) |
| SK_(print_debug_usage)(); |
| else |
| VG_(printf)(" (none)\n"); |
| } |
| VG_(printf)(usage3, VG_BUGS_TO); |
| |
| VG_(shutdown_logging)(); |
| VG_(clo_log_to) = VgLogTo_Fd; |
| VG_(clo_logfile_fd) = 2; /* stderr */ |
| VG_(exit)(1); |
| } |
| |
| |
| static void process_cmd_line_options ( const KickstartParams *kp ) |
| { |
| Int argc; |
| Char **argv; |
| Int i, eventually_logfile_fd; |
| Int *auxp; |
| |
| # define ISSPACE(cc) ((cc) == ' ' || (cc) == '\t' || (cc) == '\n') |
| |
| /* log to stderr by default, but usage message goes to stdout */ |
| eventually_logfile_fd = 2; |
| |
| /* Once logging is started, we can safely send messages pertaining |
| to failures in initialisation. */ |
| VG_(startup_logging)(); |
| |
| /* Check for sane path in ./configure --prefix=... */ |
| if (VG_LIBDIR[0] != '/') |
| config_error("Please use absolute paths in " |
| "./configure --prefix=... or --libdir=..."); |
| |
| for(auxp = kp->client_auxv; auxp[0] != VKI_AT_NULL; auxp += 2) { |
| switch(auxp[0]) { |
| case VKI_AT_SYSINFO: |
| VG_(sysinfo_page_exists) = True; |
| auxp[1] = (Int)(VG_(client_trampoline_code) + VG_(tramp_syscall_offset)); |
| VG_(sysinfo_page_addr) = auxp[1]; |
| break; |
| } |
| } |
| |
| VG_(client_envp) = kp->client_envp; |
| |
| argc = kp->argc; |
| argv = kp->argv; |
| |
| VG_(vg_argc) = argc; |
| VG_(vg_argv) = argv; |
| |
| /* We know the initial ESP is pointing at argc/argv */ |
| VG_(client_argc) = *(Int *)kp->client_esp; |
| VG_(client_argv) = (Char **)(kp->client_esp + sizeof(Int)); |
| |
| for (i = 1; i < argc; i++) { |
| /* Ignore these options - they've already been handled */ |
| if (VG_CLO_STREQN(7, argv[i], "--tool=") || |
| VG_CLO_STREQN(7, argv[i], "--skin=")) |
| continue; |
| if (VG_CLO_STREQN(7, argv[i], "--exec=")) |
| continue; |
| |
| if ( VG_CLO_STREQ(argv[i], "--")) |
| continue; |
| else if (VG_CLO_STREQ(argv[i], "-v") || |
| VG_CLO_STREQ(argv[i], "--verbose")) |
| VG_(clo_verbosity)++; |
| else if (VG_CLO_STREQ(argv[i], "-q") || |
| VG_CLO_STREQ(argv[i], "--quiet")) |
| VG_(clo_verbosity)--; |
| |
| else if (VG_CLO_STREQ(argv[i], "--error-limit=yes")) |
| VG_(clo_error_limit) = True; |
| else if (VG_CLO_STREQ(argv[i], "--error-limit=no")) |
| VG_(clo_error_limit) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--gdb-attach=yes")) |
| VG_(clo_GDB_attach) = True; |
| else if (VG_CLO_STREQ(argv[i], "--gdb-attach=no")) |
| VG_(clo_GDB_attach) = False; |
| |
| else if (VG_CLO_STREQN(11,argv[i], "--gdb-path=")) |
| VG_(clo_GDB_path) = &argv[i][11]; |
| |
| else if (VG_CLO_STREQ(argv[i], "--gen-suppressions=yes")) |
| VG_(clo_gen_suppressions) = True; |
| else if (VG_CLO_STREQ(argv[i], "--gen-suppressions=no")) |
| VG_(clo_gen_suppressions) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--show-below-main=yes")) |
| VG_(clo_show_below_main) = True; |
| else if (VG_CLO_STREQ(argv[i], "--show-below-main=no")) |
| VG_(clo_show_below_main) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--pointercheck=yes")) |
| VG_(clo_pointercheck) = True; |
| else if (VG_CLO_STREQ(argv[i], "--pointercheck=no")) |
| VG_(clo_pointercheck) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--demangle=yes")) |
| VG_(clo_demangle) = True; |
| else if (VG_CLO_STREQ(argv[i], "--demangle=no")) |
| VG_(clo_demangle) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--trace-children=yes")) |
| VG_(clo_trace_children) = True; |
| else if (VG_CLO_STREQ(argv[i], "--trace-children=no")) |
| VG_(clo_trace_children) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--run-libc-freeres=yes")) |
| VG_(clo_run_libc_freeres) = True; |
| else if (VG_CLO_STREQ(argv[i], "--run-libc-freeres=no")) |
| VG_(clo_run_libc_freeres) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--track-fds=yes")) |
| VG_(clo_track_fds) = True; |
| else if (VG_CLO_STREQ(argv[i], "--track-fds=no")) |
| VG_(clo_track_fds) = False; |
| |
| else if (VG_CLO_STREQN(15, argv[i], "--sanity-level=")) |
| VG_(sanity_level) = (Int)VG_(atoll)(&argv[i][15]); |
| |
| else if (VG_CLO_STREQN(13, argv[i], "--logfile-fd=")) { |
| VG_(clo_log_to) = VgLogTo_Fd; |
| VG_(clo_logfile_name) = NULL; |
| eventually_logfile_fd = (Int)VG_(atoll)(&argv[i][13]); |
| } |
| |
| else if (VG_CLO_STREQN(10, argv[i], "--logfile=")) { |
| VG_(clo_log_to) = VgLogTo_File; |
| VG_(clo_logfile_name) = &argv[i][10]; |
| } |
| |
| else if (VG_CLO_STREQN(12, argv[i], "--logsocket=")) { |
| VG_(clo_log_to) = VgLogTo_Socket; |
| VG_(clo_logfile_name) = &argv[i][12]; |
| } |
| |
| else if (VG_CLO_STREQN(11, argv[i], "--input-fd=")) |
| VG_(clo_input_fd) = (Int)VG_(atoll)(&argv[i][11]); |
| |
| else if (VG_CLO_STREQN(15, argv[i], "--suppressions=")) { |
| if (VG_(clo_n_suppressions) >= VG_CLO_MAX_SFILES) { |
| VG_(message)(Vg_UserMsg, "Too many suppression files specified."); |
| VG_(message)(Vg_UserMsg, |
| "Increase VG_CLO_MAX_SFILES and recompile."); |
| VG_(bad_option)(argv[i]); |
| } |
| VG_(clo_suppressions)[VG_(clo_n_suppressions)] = &argv[i][15]; |
| VG_(clo_n_suppressions)++; |
| } |
| else if (VG_CLO_STREQ(argv[i], "--profile=yes")) |
| VG_(clo_profile) = True; |
| else if (VG_CLO_STREQ(argv[i], "--profile=no")) |
| VG_(clo_profile) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--chain-bb=yes")) |
| VG_(clo_chain_bb) = True; |
| else if (VG_CLO_STREQ(argv[i], "--chain-bb=no")) |
| VG_(clo_chain_bb) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--branchpred=yes")) |
| VG_(clo_branchpred) = True; |
| else if (VG_CLO_STREQ(argv[i], "--branchpred=no")) |
| VG_(clo_branchpred) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--single-step=yes")) |
| VG_(clo_single_step) = True; |
| else if (VG_CLO_STREQ(argv[i], "--single-step=no")) |
| VG_(clo_single_step) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--optimise=yes")) |
| VG_(clo_optimise) = True; |
| else if (VG_CLO_STREQ(argv[i], "--optimise=no")) |
| VG_(clo_optimise) = False; |
| |
| /* "vwxyz" --> 000zyxwv (binary) */ |
| else if (VG_CLO_STREQN(16, argv[i], "--trace-codegen=")) { |
| Int j; |
| char* opt = & argv[i][16]; |
| |
| if (5 != VG_(strlen)(opt)) { |
| VG_(message)(Vg_UserMsg, |
| "--trace-codegen argument must have 5 digits"); |
| VG_(bad_option)(argv[i]); |
| } |
| for (j = 0; j < 5; j++) { |
| if ('0' == opt[j]) { /* do nothing */ } |
| else if ('1' == opt[j]) VG_(clo_trace_codegen) |= (1 << j); |
| else { |
| VG_(message)(Vg_UserMsg, "--trace-codegen argument can only " |
| "contain 0s and 1s"); |
| VG_(bad_option)(argv[i]); |
| } |
| } |
| } |
| |
| else if (VG_CLO_STREQ(argv[i], "--trace-syscalls=yes")) |
| VG_(clo_trace_syscalls) = True; |
| else if (VG_CLO_STREQ(argv[i], "--trace-syscalls=no")) |
| VG_(clo_trace_syscalls) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--trace-signals=yes")) |
| VG_(clo_trace_signals) = True; |
| else if (VG_CLO_STREQ(argv[i], "--trace-signals=no")) |
| VG_(clo_trace_signals) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--trace-symtab=yes")) |
| VG_(clo_trace_symtab) = True; |
| else if (VG_CLO_STREQ(argv[i], "--trace-symtab=no")) |
| VG_(clo_trace_symtab) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--trace-sched=yes")) |
| VG_(clo_trace_sched) = True; |
| else if (VG_CLO_STREQ(argv[i], "--trace-sched=no")) |
| VG_(clo_trace_sched) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--trace-pthread=none")) |
| VG_(clo_trace_pthread_level) = 0; |
| else if (VG_CLO_STREQ(argv[i], "--trace-pthread=some")) |
| VG_(clo_trace_pthread_level) = 1; |
| else if (VG_CLO_STREQ(argv[i], "--trace-pthread=all")) |
| VG_(clo_trace_pthread_level) = 2; |
| |
| else if (VG_CLO_STREQN(14, argv[i], "--weird-hacks=")) |
| VG_(clo_weird_hacks) = &argv[i][14]; |
| |
| else if (VG_CLO_STREQN(17, argv[i], "--signal-polltime=")) |
| VG_(clo_signal_polltime) = VG_(atoll)(&argv[i][17]); |
| |
| else if (VG_CLO_STREQ(argv[i], "--lowlat-signals=yes")) |
| VG_(clo_lowlat_signals) = True; |
| else if (VG_CLO_STREQ(argv[i], "--lowlat-signals=no")) |
| VG_(clo_lowlat_signals) = False; |
| |
| else if (VG_CLO_STREQ(argv[i], "--lowlat-syscalls=yes")) |
| VG_(clo_lowlat_syscalls) = True; |
| else if (VG_CLO_STREQ(argv[i], "--lowlat-syscalls=no")) |
| VG_(clo_lowlat_syscalls) = False; |
| |
| else if (VG_CLO_STREQN(13, argv[i], "--stop-after=")) |
| VG_(clo_stop_after) = VG_(atoll)(&argv[i][13]); |
| |
| else if (VG_CLO_STREQN(13, argv[i], "--dump-error=")) |
| VG_(clo_dump_error) = (Int)VG_(atoll)(&argv[i][13]); |
| |
| else if (VG_CLO_STREQ(argv[i], "--wait-for-gdb=yes")) |
| VG_(clo_wait_for_gdb) = True; |
| else if (VG_CLO_STREQ(argv[i], "--wait-for-gdb=no")) |
| VG_(clo_wait_for_gdb) = False; |
| |
| else if (VG_CLO_STREQN(14, argv[i], "--num-callers=")) { |
| /* Make sure it's sane. */ |
| VG_(clo_backtrace_size) = (Int)VG_(atoll)(&argv[i][14]); |
| if (VG_(clo_backtrace_size) < 1) |
| VG_(clo_backtrace_size) = 1; |
| if (VG_(clo_backtrace_size) >= VG_DEEPEST_BACKTRACE) |
| VG_(clo_backtrace_size) = VG_DEEPEST_BACKTRACE; |
| } |
| |
| else if (VG_(needs).command_line_options) { |
| Bool ok = SK_(process_cmd_line_option)(argv[i]); |
| if (!ok) |
| VG_(usage)(); |
| } |
| else |
| VG_(usage)(); |
| } |
| |
| # undef ISSPACE |
| |
| if (VG_(clo_verbosity) < 0) |
| VG_(clo_verbosity) = 0; |
| |
| if (VG_(clo_GDB_attach) && VG_(clo_trace_children)) { |
| VG_(message)(Vg_UserMsg, ""); |
| VG_(message)(Vg_UserMsg, |
| "--gdb-attach=yes conflicts with --trace-children=yes"); |
| VG_(message)(Vg_UserMsg, |
| "Please choose one or the other, but not both."); |
| VG_(bad_option)("--gdb-attach=yes and --trace-children=yes"); |
| } |
| |
| /* Set up logging now. After this is done, VG_(clo_logfile_fd) |
| should be connected to whatever sink has been selected, and we |
| indiscriminately chuck stuff into it without worrying what the |
| nature of it is. Oh the wonder of Unix streams. */ |
| |
| /* So far we should be still attached to stdout, so we can show on |
| the terminal any problems to do with processing command line |
| opts. */ |
| vg_assert(VG_(clo_logfile_fd) == 1 /* stdout */); |
| vg_assert(VG_(logging_to_filedes) == True); |
| |
| switch (VG_(clo_log_to)) { |
| |
| case VgLogTo_Fd: |
| vg_assert(VG_(clo_logfile_name) == NULL); |
| VG_(clo_logfile_fd) = eventually_logfile_fd; |
| break; |
| |
| case VgLogTo_File: { |
| Char logfilename[1000]; |
| Int seq = 0; |
| Int pid = VG_(getpid)(); |
| |
| vg_assert(VG_(clo_logfile_name) != NULL); |
| vg_assert(VG_(strlen)(VG_(clo_logfile_name)) <= 900); /* paranoia */ |
| |
| for(;;) { |
| if (seq == 0) |
| VG_(sprintf)(logfilename, "%s.pid%d", |
| VG_(clo_logfile_name), pid ); |
| else |
| VG_(sprintf)(logfilename, "%s.pid%d.%d", |
| VG_(clo_logfile_name), pid, seq ); |
| seq++; |
| |
| eventually_logfile_fd |
| = VG_(open)(logfilename, |
| VKI_O_CREAT|VKI_O_WRONLY|VKI_O_EXCL|VKI_O_TRUNC, |
| VKI_S_IRUSR|VKI_S_IWUSR); |
| if (eventually_logfile_fd >= 0) { |
| VG_(clo_logfile_fd) = eventually_logfile_fd; |
| break; |
| } else { |
| if (eventually_logfile_fd != -VKI_EEXIST) { |
| VG_(message)(Vg_UserMsg, |
| "Can't create/open log file `%s.pid%d'; giving up!", |
| VG_(clo_logfile_name), pid); |
| VG_(bad_option)( |
| "--logfile=<file> didn't work out for some reason."); |
| break; |
| } |
| } |
| } |
| break; |
| } |
| |
| case VgLogTo_Socket: { |
| vg_assert(VG_(clo_logfile_name) != NULL); |
| vg_assert(VG_(strlen)(VG_(clo_logfile_name)) <= 900); /* paranoia */ |
| eventually_logfile_fd |
| = VG_(connect_via_socket)( VG_(clo_logfile_name) ); |
| if (eventually_logfile_fd == -1) { |
| VG_(message)(Vg_UserMsg, |
| "Invalid --logsocket=ipaddr or --logsocket=ipaddr:port spec"); |
| VG_(message)(Vg_UserMsg, |
| "of `%s'; giving up!", VG_(clo_logfile_name) ); |
| VG_(bad_option)( |
| "--logsocket="); |
| } |
| if (eventually_logfile_fd == -2) { |
| VG_(message)(Vg_UserMsg, |
| "valgrind: failed to connect to logging server `%s'.", |
| VG_(clo_logfile_name) ); |
| VG_(message)(Vg_UserMsg, |
| "Log messages will sent to stderr instead." ); |
| VG_(message)(Vg_UserMsg, |
| "" ); |
| /* We don't change anything here. */ |
| } else { |
| vg_assert(eventually_logfile_fd > 0); |
| VG_(clo_logfile_fd) = eventually_logfile_fd; |
| VG_(logging_to_filedes) = False; |
| } |
| break; |
| } |
| |
| } |
| |
| /* Move logfile_fd into the safe range, so it doesn't conflict with any app fds */ |
| eventually_logfile_fd = VG_(fcntl)(VG_(clo_logfile_fd), VKI_F_DUPFD, VG_(max_fd)+1); |
| if (eventually_logfile_fd < 0) |
| VG_(message)(Vg_UserMsg, "valgrind: failed to move logfile fd into safe range"); |
| else { |
| VG_(clo_logfile_fd) = eventually_logfile_fd; |
| VG_(fcntl)(VG_(clo_logfile_fd), VKI_F_SETFD, VKI_FD_CLOEXEC); |
| } |
| |
| /* Ok, the logging sink is running now. Print a suitable preamble. |
| If logging to file or a socket, write details of parent PID and |
| command line args, to help people trying to interpret the |
| results of a run which encompasses multiple processes. */ |
| |
| if (VG_(clo_verbosity > 0)) { |
| /* Skin details */ |
| VG_(message)(Vg_UserMsg, "%s%s%s, %s for x86-linux.", |
| VG_(details).name, |
| NULL == VG_(details).version ? "" : "-", |
| NULL == VG_(details).version |
| ? (Char*)"" : VG_(details).version, |
| VG_(details).description); |
| VG_(message)(Vg_UserMsg, "%s", VG_(details).copyright_author); |
| |
| /* Core details */ |
| VG_(message)(Vg_UserMsg, |
| "Using valgrind-%s, a program supervision framework for x86-linux.", |
| VERSION); |
| VG_(message)(Vg_UserMsg, |
| "Copyright (C) 2000-2003, and GNU GPL'd, by Julian Seward."); |
| } |
| |
| if (VG_(clo_verbosity) > 0 && VG_(clo_log_to) != VgLogTo_Fd) { |
| VG_(message)(Vg_UserMsg, ""); |
| VG_(message)(Vg_UserMsg, |
| "My PID = %d, parent PID = %d. Prog and args are:", |
| VG_(getpid)(), VG_(getppid)() ); |
| for (i = 0; i < VG_(client_argc); i++) |
| VG_(message)(Vg_UserMsg, " %s", VG_(client_argv)[i]); |
| } |
| |
| if (VG_(clo_verbosity) > 1) { |
| if (VG_(clo_log_to) != VgLogTo_Fd) |
| VG_(message)(Vg_UserMsg, ""); |
| VG_(message)(Vg_UserMsg, "Valgrind library directory: %s", VG_(libdir)); |
| VG_(message)(Vg_UserMsg, "Command line"); |
| for (i = 0; i < VG_(client_argc); i++) |
| VG_(message)(Vg_UserMsg, " %s", VG_(client_argv)[i]); |
| |
| VG_(message)(Vg_UserMsg, "Startup, with flags:"); |
| for (i = 1; i < argc; i++) { |
| VG_(message)(Vg_UserMsg, " %s", argv[i]); |
| } |
| } |
| |
| if (VG_(clo_n_suppressions) < VG_CLO_MAX_SFILES-1 && |
| (VG_(needs).core_errors || VG_(needs).skin_errors)) { |
| /* If there are no suppression files specified and the skin |
| needs one, load the default */ |
| static const Char default_supp[] = "default.supp"; |
| Int len = VG_(strlen)(VG_(libdir)) + 1 + sizeof(default_supp); |
| Char *buf = VG_(arena_malloc)(VG_AR_CORE, len); |
| VG_(sprintf)(buf, "%s/%s", VG_(libdir), default_supp); |
| VG_(clo_suppressions)[VG_(clo_n_suppressions)] = buf; |
| VG_(clo_n_suppressions)++; |
| } |
| |
| if (VG_(clo_gen_suppressions) && |
| !VG_(needs).core_errors && !VG_(needs).skin_errors) { |
| config_error("Can't use --gen-suppressions=yes with this skin,\n" |
| " as it doesn't generate errors."); |
| } |
| |
| } |
| |
| /* --------------------------------------------------------------------- |
| Copying to/from m_state_static. |
| ------------------------------------------------------------------ */ |
| |
| /* See comment about this in vg_include.h. Change only with |
| great care. |
| */ |
| __attribute__ ((aligned (16))) |
| UInt VG_(m_state_static) [6 /* segment regs, Intel order */ |
| + 8 /* int regs, in Intel order */ |
| + 1 /* %eflags */ |
| + 1 /* %eip */ |
| + VG_SIZE_OF_SSESTATE_W /* FPU state */ |
| ]; |
| |
| UInt VG_(insertDflag)(UInt eflags, Int d) |
| { |
| vg_assert(d == 1 || d == -1); |
| eflags &= ~EFlagD; |
| |
| if (d < 0) |
| eflags |= EFlagD; |
| |
| return eflags; |
| } |
| |
| Int VG_(extractDflag)(UInt eflags) |
| { |
| Int ret; |
| |
| if (eflags & EFlagD) |
| ret = -1; |
| else |
| ret = 1; |
| |
| return ret; |
| } |
| |
| void VG_(copy_baseBlock_to_m_state_static) ( void ) |
| { |
| Int i; |
| VG_(m_state_static)[ 0/4] = VG_(baseBlock)[VGOFF_(m_cs)]; |
| VG_(m_state_static)[ 4/4] = VG_(baseBlock)[VGOFF_(m_ss)]; |
| VG_(m_state_static)[ 8/4] = VG_(baseBlock)[VGOFF_(m_ds)]; |
| VG_(m_state_static)[12/4] = VG_(baseBlock)[VGOFF_(m_es)]; |
| VG_(m_state_static)[16/4] = VG_(baseBlock)[VGOFF_(m_fs)]; |
| VG_(m_state_static)[20/4] = VG_(baseBlock)[VGOFF_(m_gs)]; |
| |
| VG_(m_state_static)[24/4] = VG_(baseBlock)[VGOFF_(m_eax)]; |
| VG_(m_state_static)[28/4] = VG_(baseBlock)[VGOFF_(m_ecx)]; |
| VG_(m_state_static)[32/4] = VG_(baseBlock)[VGOFF_(m_edx)]; |
| VG_(m_state_static)[36/4] = VG_(baseBlock)[VGOFF_(m_ebx)]; |
| VG_(m_state_static)[40/4] = VG_(baseBlock)[VGOFF_(m_esp)]; |
| VG_(m_state_static)[44/4] = VG_(baseBlock)[VGOFF_(m_ebp)]; |
| VG_(m_state_static)[48/4] = VG_(baseBlock)[VGOFF_(m_esi)]; |
| VG_(m_state_static)[52/4] = VG_(baseBlock)[VGOFF_(m_edi)]; |
| |
| VG_(m_state_static)[56/4] |
| = VG_(insertDflag)(VG_(baseBlock)[VGOFF_(m_eflags)], |
| VG_(baseBlock)[VGOFF_(m_dflag)]); |
| VG_(m_state_static)[60/4] = VG_(baseBlock)[VGOFF_(m_eip)]; |
| |
| for (i = 0; i < VG_SIZE_OF_SSESTATE_W; i++) |
| VG_(m_state_static)[64/4 + i] |
| = VG_(baseBlock)[VGOFF_(m_ssestate) + i]; |
| } |
| |
| |
| void VG_(copy_m_state_static_to_baseBlock) ( void ) |
| { |
| Int i; |
| VG_(baseBlock)[VGOFF_(m_cs)] = VG_(m_state_static)[ 0/4]; |
| VG_(baseBlock)[VGOFF_(m_ss)] = VG_(m_state_static)[ 4/4]; |
| VG_(baseBlock)[VGOFF_(m_ds)] = VG_(m_state_static)[ 8/4]; |
| VG_(baseBlock)[VGOFF_(m_es)] = VG_(m_state_static)[12/4]; |
| VG_(baseBlock)[VGOFF_(m_fs)] = VG_(m_state_static)[16/4]; |
| VG_(baseBlock)[VGOFF_(m_gs)] = VG_(m_state_static)[20/4]; |
| |
| VG_(baseBlock)[VGOFF_(m_eax)] = VG_(m_state_static)[24/4]; |
| VG_(baseBlock)[VGOFF_(m_ecx)] = VG_(m_state_static)[28/4]; |
| VG_(baseBlock)[VGOFF_(m_edx)] = VG_(m_state_static)[32/4]; |
| VG_(baseBlock)[VGOFF_(m_ebx)] = VG_(m_state_static)[36/4]; |
| VG_(baseBlock)[VGOFF_(m_esp)] = VG_(m_state_static)[40/4]; |
| VG_(baseBlock)[VGOFF_(m_ebp)] = VG_(m_state_static)[44/4]; |
| VG_(baseBlock)[VGOFF_(m_esi)] = VG_(m_state_static)[48/4]; |
| VG_(baseBlock)[VGOFF_(m_edi)] = VG_(m_state_static)[52/4]; |
| |
| VG_(baseBlock)[VGOFF_(m_eflags)] |
| = VG_(m_state_static)[56/4] & ~EFlagD; |
| VG_(baseBlock)[VGOFF_(m_dflag)] |
| = VG_(extractDflag)(VG_(m_state_static)[56/4]); |
| |
| VG_(baseBlock)[VGOFF_(m_eip)] = VG_(m_state_static)[60/4]; |
| |
| for (i = 0; i < VG_SIZE_OF_SSESTATE_W; i++) |
| VG_(baseBlock)[VGOFF_(m_ssestate) + i] |
| = VG_(m_state_static)[64/4 + i]; |
| } |
| |
| Addr VG_(get_stack_pointer) ( void ) |
| { |
| return VG_(baseBlock)[VGOFF_(m_esp)]; |
| } |
| |
| /* --------------------------------------------------------------------- |
| Show accumulated counts. |
| ------------------------------------------------------------------ */ |
| |
| static __inline__ Int safe_idiv(Int a, Int b) |
| { |
| return (b == 0 ? 0 : a / b); |
| } |
| |
| static void vg_show_counts ( void ) |
| { |
| VG_(message)(Vg_DebugMsg, |
| " TT/TC: %d tc sectors discarded.", |
| VG_(number_of_tc_discards) ); |
| VG_(message)(Vg_DebugMsg, |
| " %d chainings, %d unchainings.", |
| VG_(bb_enchain_count), VG_(bb_dechain_count) ); |
| VG_(message)(Vg_DebugMsg, |
| "translate: new %d (%d -> %d; ratio %d:10)", |
| VG_(overall_in_count), |
| VG_(overall_in_osize), |
| VG_(overall_in_tsize), |
| safe_idiv(10*VG_(overall_in_tsize), VG_(overall_in_osize))); |
| VG_(message)(Vg_DebugMsg, |
| " discard %d (%d -> %d; ratio %d:10).", |
| VG_(overall_out_count), |
| VG_(overall_out_osize), |
| VG_(overall_out_tsize), |
| safe_idiv(10*VG_(overall_out_tsize), VG_(overall_out_osize))); |
| VG_(message)(Vg_DebugMsg, |
| " dispatch: %llu jumps (bb entries), of which %u (%lu%%) were unchained.", |
| VG_(bbs_done), |
| VG_(unchained_jumps_done), |
| ((ULong)(100) * (ULong)(VG_(unchained_jumps_done))) |
| / ( VG_(bbs_done)==0 ? 1 : VG_(bbs_done) ) |
| ); |
| |
| VG_(message)(Vg_DebugMsg, |
| " %d/%d major/minor sched events. %d tt_fast misses.", |
| VG_(num_scheduling_events_MAJOR), |
| VG_(num_scheduling_events_MINOR), |
| VG_(tt_fast_misses)); |
| |
| VG_(message)(Vg_DebugMsg, |
| "reg-alloc: %d t-req-spill, " |
| "%d+%d orig+spill uis, %d total-reg-r.", |
| VG_(translations_needing_spill), |
| VG_(uinstrs_prealloc), |
| VG_(uinstrs_spill), |
| VG_(total_reg_rank) ); |
| VG_(message)(Vg_DebugMsg, |
| " sanity: %d cheap, %d expensive checks.", |
| VG_(sanity_fast_count), |
| VG_(sanity_slow_count) ); |
| VG_(print_ccall_stats)(); |
| } |
| |
| |
| /* --------------------------------------------------------------------- |
| Main! |
| ------------------------------------------------------------------ */ |
| |
| /* Initialize the PID and PGRP of scheduler LWP; this is also called |
| in any new children after fork. */ |
| static void newpid(ThreadId unused) |
| { |
| /* PID of scheduler LWP */ |
| VG_(main_pid) = VG_(getpid)(); |
| VG_(main_pgrp) = VG_(getpgrp)(); |
| } |
| |
| /* Where we jump to once Valgrind has got control, and the real |
| machine's state has been copied to the m_state_static. */ |
| |
| void VG_(main) ( const KickstartParams *kp, void (*tool_init)(void), void *tool_dlhandle ) |
| { |
| VgSchedReturnCode src; |
| struct vki_rlimit rl; |
| |
| /* initial state */ |
| if (0) |
| VG_(printf)("starting esp=%p eip=%p, esp=%p\n", kp->client_esp, kp->client_eip, &src); |
| VG_(esp_at_startup) = kp->client_esp; |
| VG_(memset)(&VG_(m_state_static), 0, sizeof(VG_(m_state_static))); |
| VG_(m_state_static)[40/4] = kp->client_esp; |
| VG_(m_state_static)[60/4] = kp->client_eip; |
| |
| /* set up an initial FPU state (doesn't really matter what it is, |
| so long as it's somewhat valid) */ |
| if (!VG_(have_ssestate)) |
| asm volatile("fwait; fnsave %0; fwait; frstor %0; fwait" |
| : : "m" (VG_(m_state_static)[64/4]) : "cc", "memory"); |
| else |
| asm volatile("fwait; fxsave %0; fwait; andl $0xffbf, %1; fxrstor %0; fwait" |
| : : "m" (VG_(m_state_static)[64/4]), "m" (VG_(m_state_static)[(64+24)/4]) : "cc", "memory"); |
| |
| VG_(brk_base) = VG_(brk_limit) = kp->client_brkbase; |
| VG_(client_base) = kp->client_base; |
| VG_(client_end) = kp->client_end; |
| VG_(client_mapbase) = kp->client_mapbase; |
| VG_(clstk_base) = kp->clstk_base; |
| VG_(clstk_end) = kp->clstk_end; |
| vg_assert(VG_(clstk_end) == VG_(client_end)); |
| |
| VG_(shadow_base) = kp->shadow_base; |
| VG_(shadow_end) = kp->shadow_end; |
| VG_(valgrind_base) = kp->vg_base; |
| VG_(valgrind_mmap_end) = kp->vg_mmap_end; |
| VG_(valgrind_end) = kp->vg_end; |
| |
| VG_(libdir) = kp->libdir; |
| |
| VG_(client_trampoline_code) = kp->cl_tramp_code; |
| |
| if (0) { |
| if (VG_(have_ssestate)) |
| VG_(printf)("Looks like a SSE-capable CPU\n"); |
| else |
| VG_(printf)("Looks like a MMX-only CPU\n"); |
| } |
| |
| VG_(atfork)(NULL, NULL, newpid); |
| newpid(VG_INVALID_THREADID); |
| |
| /* Get the current file descriptor limits. */ |
| if (VG_(getrlimit)(VKI_RLIMIT_NOFILE, &rl) < 0) { |
| rl.rlim_cur = 1024; |
| rl.rlim_max = 1024; |
| } |
| |
| /* Work out where to move the soft limit to. */ |
| if (rl.rlim_cur + VG_N_RESERVED_FDS <= rl.rlim_max) { |
| rl.rlim_cur = rl.rlim_cur + VG_N_RESERVED_FDS; |
| } else { |
| rl.rlim_cur = rl.rlim_max; |
| } |
| |
| /* Reserve some file descriptors for our use. */ |
| VG_(max_fd) = rl.rlim_cur - VG_N_RESERVED_FDS; |
| |
| /* Update the soft limit. */ |
| VG_(setrlimit)(VKI_RLIMIT_NOFILE, &rl); |
| |
| if (kp->vgexecfd != -1) |
| VG_(vgexecfd) = VG_(safe_fd)(kp->vgexecfd); |
| if (kp->clexecfd != -1) |
| VG_(clexecfd) = VG_(safe_fd)(kp->clexecfd); |
| |
| /* Read /proc/self/maps into a buffer. Must be before: |
| - SK_(pre_clo_init)(): so that if it calls VG_(malloc)(), any mmap'd |
| superblocks are not erroneously identified as being owned by the |
| client, which would be bad. |
| - init_memory(): that's where the buffer is parsed |
| - init_tt_tc(): so the anonymous mmaps for the translation table and |
| translation cache aren't identified as part of the client, which would |
| waste > 20M of virtual address space, and be bad. |
| */ |
| VG_(read_procselfmaps)(); |
| |
| /* Setup stuff that depends on the skin. Must be before: |
| - vg_init_baseBlock(): to register helpers |
| - process_cmd_line_options(): to register skin name and description, |
| and turn on/off 'command_line_options' need |
| - init_memory() (to setup memory event trackers). |
| */ |
| (*tool_init)(); |
| VG_(tool_init_dlsym)(tool_dlhandle); |
| |
| VG_(sanity_check_needs)(); |
| |
| /* Process Valgrind's command-line opts */ |
| process_cmd_line_options(kp); |
| |
| /* Hook to delay things long enough so we can get the pid and |
| attach GDB in another shell. */ |
| if (VG_(clo_wait_for_gdb)) { |
| VG_(printf)("pid=%d\n", VG_(getpid)()); |
| /* do "jump *$eip" to skip this in gdb */ |
| VG_(do_syscall)(__NR_pause); |
| } |
| |
| /* Do post command-line processing initialisation. Must be before: |
| - vg_init_baseBlock(): to register any more helpers |
| */ |
| SK_(post_clo_init)(); |
| |
| /* Set up baseBlock offsets and copy the saved machine's state into it. */ |
| vg_init_baseBlock(); |
| |
| /* Search for file descriptors that are inherited from our parent. */ |
| if (VG_(clo_track_fds)) |
| VG_(init_preopened_fds)(); |
| |
| /* Initialise the scheduler, and copy the client's state from |
| baseBlock into VG_(threads)[1]. Must be before: |
| - VG_(sigstartup_actions)() |
| */ |
| VG_(scheduler_init)(); |
| |
| /* Set up the ProxyLWP machinery */ |
| VG_(proxy_init)(); |
| |
| /* Initialise the signal handling subsystem, temporarily parking |
| the saved blocking-mask in saved_sigmask. */ |
| VG_(sigstartup_actions)(); |
| |
| /* Perhaps we're profiling Valgrind? */ |
| if (VG_(clo_profile)) |
| VGP_(init_profiling)(); |
| |
| /* Start calibration of our RDTSC-based clock. */ |
| VG_(start_rdtsc_calibration)(); |
| |
| /* Parse /proc/self/maps to learn about startup segments. */ |
| VGP_PUSHCC(VgpInitMem); |
| VG_(init_memory)(); |
| VGP_POPCC(VgpInitMem); |
| |
| /* Read the list of errors to suppress. This should be found in |
| the file specified by vg_clo_suppressions. */ |
| if (VG_(needs).core_errors || VG_(needs).skin_errors) |
| VG_(load_suppressions)(); |
| |
| /* End calibration of our RDTSC-based clock, leaving it as long as |
| we can. */ |
| VG_(end_rdtsc_calibration)(); |
| |
| /* Initialise translation table and translation cache. */ |
| VG_(init_tt_tc)(); |
| |
| if (VG_(clo_verbosity) == 1) { |
| VG_(message)(Vg_UserMsg, |
| "For more details, rerun with: -v"); |
| } |
| |
| /* Force a read of the debug info so that we can look for |
| glibc entry points to intercept. */ |
| VG_(setup_code_redirect_table)(); |
| |
| /* Now it is safe for malloc et al in vg_clientmalloc.c to act |
| instrumented-ly. */ |
| if (VG_(clo_verbosity) > 0) |
| VG_(message)(Vg_UserMsg, ""); |
| |
| VG_(bbs_to_go) = VG_(clo_stop_after); |
| |
| if (VG_(clo_pointercheck)) { |
| vki_modify_ldt_t ldt = { VG_POINTERCHECK_SEGIDX, |
| VG_(client_base), |
| (VG_(client_end)-VG_(client_base)) / VKI_BYTES_PER_PAGE, |
| 1, /* 32 bit */ |
| 0, /* contents: data, RW, non-expanding */ |
| 0, /* not read-exec only */ |
| 1, /* limit in pages */ |
| 0, /* !seg not present */ |
| 1, /* usable */ |
| }; |
| Int ret = VG_(do_syscall)(__NR_modify_ldt, 1, &ldt, sizeof(ldt)); |
| |
| if (ret < 0) { |
| VG_(message)(Vg_UserMsg, |
| "Warning: ignoring --pointercheck=yes, " |
| "because modify_ldt failed (errno=%d)", -ret); |
| VG_(clo_pointercheck) = False; |
| } |
| } |
| |
| /* Run! */ |
| VG_(running_on_simd_CPU) = True; |
| VGP_PUSHCC(VgpSched); |
| |
| if (__builtin_setjmp(&VG_(fatal_signal_jmpbuf)) == 0) { |
| VG_(fatal_signal_set) = True; |
| src = VG_(scheduler)(); |
| } else |
| src = VgSrc_FatalSig; |
| |
| VGP_POPCC(VgpSched); |
| VG_(running_on_simd_CPU) = False; |
| |
| if (VG_(clo_verbosity) > 0) |
| VG_(message)(Vg_UserMsg, ""); |
| |
| if (src == VgSrc_Deadlock) { |
| VG_(message)(Vg_UserMsg, |
| "Warning: pthread scheduler exited due to deadlock"); |
| } |
| |
| /* Print out file descriptor summary and stats. */ |
| if(VG_(clo_track_fds)) |
| VG_(fd_stats)(); |
| |
| if (VG_(needs).core_errors || VG_(needs).skin_errors) |
| VG_(show_all_errors)(); |
| |
| SK_(fini)( VG_(exitcode) ); |
| |
| VG_(do_sanity_checks)( True /*include expensive checks*/ ); |
| |
| if (VG_(clo_verbosity) > 1) |
| vg_show_counts(); |
| |
| if (VG_(clo_verbosity) > 3) |
| VG_(print_UInstr_histogram)(); |
| |
| if (0) { |
| VG_(message)(Vg_DebugMsg, ""); |
| VG_(message)(Vg_DebugMsg, |
| "------ Valgrind's internal memory use stats follow ------" ); |
| VG_(mallocSanityCheckAll)(); |
| VG_(show_all_arena_stats)(); |
| VG_(message)(Vg_DebugMsg, |
| "------ Valgrind's ExeContext management stats follow ------" ); |
| VG_(show_ExeContext_stats)(); |
| } |
| |
| if (VG_(clo_profile)) |
| VGP_(done_profiling)(); |
| |
| VG_(shutdown_logging)(); |
| |
| /* We're exiting, so nuke all the threads and clean up the proxy LWPs */ |
| vg_assert(src == VgSrc_FatalSig || |
| VG_(threads)[VG_(last_run_tid)].status == VgTs_Runnable || |
| VG_(threads)[VG_(last_run_tid)].status == VgTs_WaitJoiner); |
| VG_(nuke_all_threads_except)(VG_INVALID_THREADID); |
| |
| /* Decide how to exit. This depends on what the scheduler |
| returned. */ |
| |
| switch (src) { |
| case VgSrc_ExitSyscall: /* the normal way out */ |
| vg_assert(VG_(last_run_tid) > 0 |
| && VG_(last_run_tid) < VG_N_THREADS); |
| VG_(proxy_shutdown)(); |
| |
| /* The thread's %EBX at the time it did __NR_exit() will hold |
| the arg to __NR_exit(), so we just do __NR_exit() with |
| that arg. */ |
| VG_(exit)( VG_(exitcode) ); |
| /* NOT ALIVE HERE! */ |
| VG_(core_panic)("entered the afterlife in vg_main() -- ExitSyscall"); |
| break; /* what the hell :) */ |
| |
| case VgSrc_Deadlock: |
| /* Just exit now. No point in continuing. */ |
| VG_(proxy_shutdown)(); |
| VG_(exit)(0); |
| VG_(core_panic)("entered the afterlife in vg_main() -- Deadlock"); |
| break; |
| |
| case VgSrc_BbsDone: |
| /* Tricky; we have to try and switch back to the real CPU. |
| This is all very dodgy and won't work at all in the |
| presence of threads, or if the client happened to be |
| running a signal handler. */ |
| /* Prepare to restore state to the real CPU. */ |
| VG_(sigshutdown_actions)(); |
| VG_(load_thread_state)(1 /* root thread */ ); |
| VG_(copy_baseBlock_to_m_state_static)(); |
| |
| VG_(proxy_shutdown)(); |
| |
| /* This pushes a return address on the simulator's stack, |
| which is abandoned. We call vg_sigshutdown_actions() at |
| the end of vg_switch_to_real_CPU(), so as to ensure that |
| the original stack and machine state is restored before |
| the real signal mechanism is restored. */ |
| VG_(switch_to_real_CPU)(); |
| |
| case VgSrc_FatalSig: |
| /* We were killed by a fatal signal, so replicate the effect */ |
| vg_assert(VG_(fatal_sigNo) != -1); |
| VG_(kill_self)(VG_(fatal_sigNo)); |
| VG_(core_panic)("vg_main(): signal was supposed to be fatal"); |
| break; |
| |
| default: |
| VG_(core_panic)("vg_main(): unexpected scheduler return code"); |
| } |
| } |
| |
| |
| /* Debugging thing .. can be called from assembly with OYNK macro. */ |
| void VG_(oynk) ( Int n ) |
| { |
| OINK(n); |
| } |
| |
| |
| /* Walk through a colon-separated environment variable, and remove the |
| entries which matches file_pattern. It slides everything down over |
| the removed entries, and pads the remaining space with '\0'. It |
| modifies the entries in place (in the client address space), but it |
| shouldn't matter too much, since we only do this just before an |
| execve(). |
| |
| This is also careful to mop up any excess ':'s, since empty strings |
| delimited by ':' are considered to be '.' in a path. |
| */ |
| void VG_(mash_colon_env)(Char *varp, const Char *remove_pattern) |
| { |
| Char *const start = varp; |
| Char *entry_start = varp; |
| Char *output = varp; |
| |
| if (varp == NULL) |
| return; |
| |
| while(*varp) { |
| if (*varp == ':') { |
| Char prev; |
| Bool match; |
| |
| /* This is a bit subtle: we want to match against the entry |
| we just copied, because it may have overlapped with |
| itself, junking the original. */ |
| |
| prev = *output; |
| *output = '\0'; |
| |
| match = VG_(string_match)(remove_pattern, entry_start); |
| |
| *output = prev; |
| |
| if (match) { |
| output = entry_start; |
| varp++; /* skip ':' after removed entry */ |
| } else |
| entry_start = output+1; /* entry starts after ':' */ |
| } |
| |
| *output++ = *varp++; |
| } |
| |
| /* match against the last entry */ |
| if (VG_(string_match)(remove_pattern, entry_start)) { |
| output = entry_start; |
| if (output > start) { |
| /* remove trailing ':' */ |
| output--; |
| vg_assert(*output == ':'); |
| } |
| } |
| |
| /* pad out the left-overs with '\0' */ |
| while(output < varp) |
| *output++ = '\0'; |
| } |
| |
| /* RUNS ON THE CLIENT'S STACK, but on the real CPU. Start GDB and get |
| it to attach to this process. Called if the user requests this |
| service after an error has been shown, so she can poke around and |
| look at parameters, memory, etc. You can't meaningfully get GDB to |
| continue the program, though; to continue, quit GDB. */ |
| void VG_(start_GDB_whilst_on_client_stack) ( void ) |
| { |
| Int res; |
| UChar buf[100]; |
| |
| VG_(sprintf)(buf, "%s -nw /proc/%d/fd/%d %d", |
| VG_(clo_GDB_path), VG_(getpid)(), VG_(clexecfd), VG_(getpid)()); |
| VG_(message)(Vg_UserMsg, "starting GDB with cmd: %s", buf); |
| res = VG_(system)(buf); |
| if (res == 0) { |
| VG_(message)(Vg_UserMsg, ""); |
| VG_(message)(Vg_UserMsg, |
| "GDB has detached. Valgrind regains control. We continue."); |
| } else { |
| VG_(message)(Vg_UserMsg, "Apparently failed!"); |
| VG_(message)(Vg_UserMsg, ""); |
| } |
| } |
| |
| |
| /* Print some helpful-ish text about unimplemented things, and give |
| up. */ |
| void VG_(unimplemented) ( Char* msg ) |
| { |
| VG_(message)(Vg_UserMsg, ""); |
| VG_(message)(Vg_UserMsg, |
| "Valgrind detected that your program requires"); |
| VG_(message)(Vg_UserMsg, |
| "the following unimplemented functionality:"); |
| VG_(message)(Vg_UserMsg, " %s", msg); |
| VG_(message)(Vg_UserMsg, |
| "This may be because the functionality is hard to implement,"); |
| VG_(message)(Vg_UserMsg, |
| "or because no reasonable program would behave this way,"); |
| VG_(message)(Vg_UserMsg, |
| "or because nobody has yet needed it. In any case, let us know at"); |
| VG_(message)(Vg_UserMsg, |
| "%s and/or try to work around the problem, if you can.", VG_BUGS_TO); |
| VG_(message)(Vg_UserMsg, |
| ""); |
| VG_(message)(Vg_UserMsg, |
| "Valgrind has to exit now. Sorry. Bye!"); |
| VG_(message)(Vg_UserMsg, |
| ""); |
| VG_(pp_sched_status)(); |
| VG_(exit)(1); |
| } |
| |
| |
| /* --------------------------------------------------------------------- |
| Sanity check machinery (permanently engaged). |
| ------------------------------------------------------------------ */ |
| |
| /* A fast sanity check -- suitable for calling circa once per |
| millisecond. */ |
| |
| void VG_(do_sanity_checks) ( Bool force_expensive ) |
| { |
| VGP_PUSHCC(VgpCoreCheapSanity); |
| |
| if (VG_(sanity_level) < 1) return; |
| |
| /* --- First do all the tests that we can do quickly. ---*/ |
| |
| VG_(sanity_fast_count)++; |
| |
| /* Check stuff pertaining to the memory check system. */ |
| |
| /* Check that nobody has spuriously claimed that the first or |
| last 16 pages of memory have become accessible [...] */ |
| if (VG_(needs).sanity_checks) { |
| VGP_PUSHCC(VgpSkinCheapSanity); |
| vg_assert(SK_(cheap_sanity_check)()); |
| VGP_POPCC(VgpSkinCheapSanity); |
| } |
| |
| /* --- Now some more expensive checks. ---*/ |
| |
| /* Once every 25 times, check some more expensive stuff. */ |
| if ( force_expensive |
| || VG_(sanity_level) > 1 |
| || (VG_(sanity_level) == 1 && (VG_(sanity_fast_count) % 25) == 0)) { |
| |
| VGP_PUSHCC(VgpCoreExpensiveSanity); |
| VG_(sanity_slow_count)++; |
| |
| VG_(proxy_sanity)(); |
| |
| # if 0 |
| { void zzzmemscan(void); zzzmemscan(); } |
| # endif |
| |
| if ((VG_(sanity_fast_count) % 250) == 0) |
| VG_(sanity_check_tc_tt)(); |
| |
| if (VG_(needs).sanity_checks) { |
| VGP_PUSHCC(VgpSkinExpensiveSanity); |
| vg_assert(SK_(expensive_sanity_check)()); |
| VGP_POPCC(VgpSkinExpensiveSanity); |
| } |
| /* |
| if ((VG_(sanity_fast_count) % 500) == 0) VG_(mallocSanityCheckAll)(); |
| */ |
| VGP_POPCC(VgpCoreExpensiveSanity); |
| } |
| |
| if (VG_(sanity_level) > 1) { |
| VGP_PUSHCC(VgpCoreExpensiveSanity); |
| /* Check sanity of the low-level memory manager. Note that bugs |
| in the client's code can cause this to fail, so we don't do |
| this check unless specially asked for. And because it's |
| potentially very expensive. */ |
| VG_(mallocSanityCheckAll)(); |
| VGP_POPCC(VgpCoreExpensiveSanity); |
| } |
| VGP_POPCC(VgpCoreCheapSanity); |
| } |
| /*--------------------------------------------------------------------*/ |
| /*--- end vg_main.c ---*/ |
| /*--------------------------------------------------------------------*/ |