| |
| /*--------------------------------------------------------------------*/ |
| /*--- Startup: the real stuff m_main.c ---*/ |
| /*--------------------------------------------------------------------*/ |
| |
| /* |
| This file is part of Valgrind, a dynamic binary instrumentation |
| framework. |
| |
| Copyright (C) 2000-2005 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 "pub_core_basics.h" |
| #include "pub_core_threadstate.h" |
| #include "pub_core_clientstate.h" |
| #include "pub_core_aspacemgr.h" |
| #include "pub_core_commandline.h" |
| #include "pub_core_debuglog.h" |
| #include "pub_core_errormgr.h" |
| #include "pub_core_execontext.h" |
| #include "pub_core_libcbase.h" |
| #include "pub_core_libcassert.h" |
| #include "pub_core_libcfile.h" |
| #include "pub_core_libcprint.h" |
| #include "pub_core_libcproc.h" |
| #include "pub_core_libcsignal.h" |
| #include "pub_core_syscall.h" // VG_(strerror) |
| #include "pub_core_machine.h" |
| #include "pub_core_mallocfree.h" |
| #include "pub_core_options.h" |
| #include "pub_core_debuginfo.h" |
| #include "pub_core_redir.h" |
| #include "pub_core_scheduler.h" |
| #include "pub_core_signals.h" |
| #include "pub_core_stacks.h" // For VG_(register_stack) |
| #include "pub_core_syswrap.h" |
| #include "pub_core_translate.h" // For VG_(translate) |
| #include "pub_core_tooliface.h" |
| #include "pub_core_trampoline.h" |
| #include "pub_core_transtab.h" |
| #include "pub_core_ume.h" |
| |
| |
| /*====================================================================*/ |
| /*=== Counters, for profiling purposes only ===*/ |
| /*====================================================================*/ |
| |
| static void print_all_stats ( void ) |
| { |
| VG_(print_translation_stats)(); |
| VG_(print_tt_tc_stats)(); |
| VG_(print_scheduler_stats)(); |
| VG_(print_ExeContext_stats)(); |
| |
| // Memory stats |
| if (VG_(clo_verbosity) > 2) { |
| VG_(message)(Vg_DebugMsg, ""); |
| VG_(message)(Vg_DebugMsg, |
| "------ Valgrind's internal memory use stats follow ------" ); |
| VG_(sanity_check_malloc_all)(); |
| VG_(message)(Vg_DebugMsg, "------" ); |
| VG_(print_all_arena_stats)(); |
| VG_(message)(Vg_DebugMsg, ""); |
| } |
| } |
| |
| |
| /*====================================================================*/ |
| /*=== Setting up the client's environment ===*/ |
| /*====================================================================*/ |
| |
| /* Prepare the client's environment. This is basically a copy of our |
| environment, except: |
| |
| LD_PRELOAD=$VALGRIND_LIB/vgpreload_core.so: |
| ($VALGRIND_LIB/vgpreload_TOOL.so:)? |
| $LD_PRELOAD |
| |
| If this is missing, then it is added. |
| |
| Also, remove any binding for VALGRIND_LAUNCHER=. The client should |
| not be able to see this. |
| |
| If this needs to handle any more variables it should be hacked |
| into something table driven. The copy is VG_(malloc)'d space. |
| */ |
| static HChar** setup_client_env ( HChar** origenv, const HChar* toolname) |
| { |
| HChar* preload_core = "vgpreload_core"; |
| HChar* ld_preload = "LD_PRELOAD="; |
| HChar* v_launcher = VALGRIND_LAUNCHER "="; |
| Int ld_preload_len = VG_(strlen)( ld_preload ); |
| Int v_launcher_len = VG_(strlen)( v_launcher ); |
| Bool ld_preload_done = False; |
| Int vglib_len = VG_(strlen)(VG_(libdir)); |
| |
| HChar** cpp; |
| HChar** ret; |
| HChar* preload_tool_path; |
| Int envc, i; |
| |
| /* Alloc space for the vgpreload_core.so path and vgpreload_<tool>.so |
| paths. We might not need the space for vgpreload_<tool>.so, but it |
| doesn't hurt to over-allocate briefly. The 16s are just cautious |
| slop. */ |
| Int preload_core_path_len = vglib_len + sizeof(preload_core) + sizeof(VG_PLATFORM) + 16; |
| Int preload_tool_path_len = vglib_len + VG_(strlen)(toolname) + sizeof(VG_PLATFORM) + 16; |
| Int preload_string_len = preload_core_path_len + preload_tool_path_len; |
| HChar* preload_string = VG_(malloc)(preload_string_len); |
| vg_assert(preload_string); |
| |
| /* Determine if there's a vgpreload_<tool>.so file, and setup |
| preload_string. */ |
| preload_tool_path = VG_(malloc)(preload_tool_path_len); |
| vg_assert(preload_tool_path); |
| VG_(snprintf)(preload_tool_path, preload_tool_path_len, |
| "%s/%s/vgpreload_%s.so", VG_(libdir), VG_PLATFORM, toolname); |
| if (VG_(access)(preload_tool_path, True/*r*/, False/*w*/, False/*x*/) == 0) { |
| VG_(snprintf)(preload_string, preload_string_len, "%s/%s/%s.so:%s", |
| VG_(libdir), VG_PLATFORM, preload_core, preload_tool_path); |
| } else { |
| VG_(snprintf)(preload_string, preload_string_len, "%s/%s/%s.so", |
| VG_(libdir), VG_PLATFORM, preload_core); |
| } |
| VG_(free)(preload_tool_path); |
| |
| VG_(debugLog)(2, "main", "preload_string:\n"); |
| VG_(debugLog)(2, "main", " \"%s\"\n", preload_string); |
| |
| /* Count the original size of the env */ |
| envc = 0; |
| for (cpp = origenv; cpp && *cpp; cpp++) |
| envc++; |
| |
| /* Allocate a new space */ |
| ret = VG_(malloc) (sizeof(HChar *) * (envc+1+1)); /* 1 new entry + NULL */ |
| vg_assert(ret); |
| |
| /* copy it over */ |
| for (cpp = ret; *origenv; ) |
| *cpp++ = *origenv++; |
| *cpp = NULL; |
| |
| vg_assert(envc == (cpp - ret)); |
| |
| /* Walk over the new environment, mashing as we go */ |
| for (cpp = ret; cpp && *cpp; cpp++) { |
| if (VG_(memcmp)(*cpp, ld_preload, ld_preload_len) == 0) { |
| Int len = VG_(strlen)(*cpp) + preload_string_len; |
| HChar *cp = VG_(malloc)(len); |
| vg_assert(cp); |
| |
| VG_(snprintf)(cp, len, "%s%s:%s", |
| ld_preload, preload_string, (*cpp)+ld_preload_len); |
| |
| *cpp = cp; |
| |
| ld_preload_done = True; |
| } |
| } |
| |
| /* Add the missing bits */ |
| if (!ld_preload_done) { |
| Int len = ld_preload_len + preload_string_len; |
| HChar *cp = VG_(malloc) (len); |
| vg_assert(cp); |
| |
| VG_(snprintf)(cp, len, "%s%s", ld_preload, preload_string); |
| |
| ret[envc++] = cp; |
| } |
| |
| /* ret[0 .. envc-1] is live now. */ |
| /* Find and remove a binding for VALGRIND_LAUNCHER. */ |
| for (i = 0; i < envc; i++) |
| if (0 == VG_(memcmp(ret[i], v_launcher, v_launcher_len))) |
| break; |
| |
| if (i < envc) { |
| for (; i < envc-1; i++) |
| ret[i] = ret[i+1]; |
| envc--; |
| } |
| |
| VG_(free)(preload_string); |
| ret[envc] = NULL; |
| |
| return ret; |
| } |
| |
| |
| /*====================================================================*/ |
| /*=== Setting up the client's stack ===*/ |
| /*====================================================================*/ |
| |
| #ifndef AT_DCACHEBSIZE |
| #define AT_DCACHEBSIZE 19 |
| #endif /* AT_DCACHEBSIZE */ |
| |
| #ifndef AT_ICACHEBSIZE |
| #define AT_ICACHEBSIZE 20 |
| #endif /* AT_ICACHEBSIZE */ |
| |
| #ifndef AT_UCACHEBSIZE |
| #define AT_UCACHEBSIZE 21 |
| #endif /* AT_UCACHEBSIZE */ |
| |
| #ifndef AT_SYSINFO |
| #define AT_SYSINFO 32 |
| #endif /* AT_SYSINFO */ |
| |
| #ifndef AT_SYSINFO_EHDR |
| #define AT_SYSINFO_EHDR 33 |
| #endif /* AT_SYSINFO_EHDR */ |
| |
| #ifndef AT_SECURE |
| #define AT_SECURE 23 /* secure mode boolean */ |
| #endif /* AT_SECURE */ |
| |
| /* Add a string onto the string table, and return its address */ |
| static char *copy_str(char **tab, const char *str) |
| { |
| char *cp = *tab; |
| char *orig = cp; |
| |
| while(*str) |
| *cp++ = *str++; |
| *cp++ = '\0'; |
| |
| if (0) |
| VG_(printf)("copied %p \"%s\" len %lld\n", orig, orig, (Long)(cp-orig)); |
| |
| *tab = cp; |
| |
| return orig; |
| } |
| |
| |
| /* ---------------------------------------------------------------- |
| |
| This sets up the client's initial stack, containing the args, |
| environment and aux vector. |
| |
| The format of the stack is: |
| |
| higher address +-----------------+ <- clstack_end |
| | | |
| : string table : |
| | | |
| +-----------------+ |
| | AT_NULL | |
| - - |
| | auxv | |
| +-----------------+ |
| | NULL | |
| - - |
| | envp | |
| +-----------------+ |
| | NULL | |
| - - |
| | argv | |
| +-----------------+ |
| | argc | |
| lower address +-----------------+ <- sp |
| | undefined | |
| : : |
| |
| Allocate and create the initial client stack. It is allocated down |
| from clstack_end, which was previously determined by the address |
| space manager. The returned value is the SP value for the client. |
| |
| The client's auxv is created by copying and modifying our own one. |
| As a side effect of scanning our own auxv, some important bits of |
| info are collected: |
| |
| VG_(cache_line_size_ppc32) // ppc32 only -- cache line size |
| VG_(have_altivec_ppc32) // ppc32 only -- is Altivec supported? |
| |
| ---------------------------------------------------------------- */ |
| |
| static |
| Addr setup_client_stack( void* init_sp, |
| char** orig_envp, |
| const ExeInfo* info, |
| UInt** client_auxv, |
| Addr clstack_end, |
| SizeT clstack_max_size ) |
| { |
| SysRes res; |
| char **cpp; |
| char *strtab; /* string table */ |
| char *stringbase; |
| Addr *ptr; |
| struct ume_auxv *auxv; |
| const struct ume_auxv *orig_auxv; |
| const struct ume_auxv *cauxv; |
| unsigned stringsize; /* total size of strings in bytes */ |
| unsigned auxsize; /* total size of auxv in bytes */ |
| Int argc; /* total argc */ |
| Int envc; /* total number of env vars */ |
| unsigned stacksize; /* total client stack size */ |
| Addr client_SP; /* client stack base (initial SP) */ |
| Addr clstack_start; |
| Int i; |
| Bool have_exename; |
| |
| vg_assert(VG_IS_PAGE_ALIGNED(clstack_end+1)); |
| |
| /* use our own auxv as a prototype */ |
| orig_auxv = VG_(find_auxv)(init_sp); |
| |
| /* ==================== compute sizes ==================== */ |
| |
| /* first of all, work out how big the client stack will be */ |
| stringsize = 0; |
| have_exename = VG_(args_the_exename) != NULL; |
| |
| /* paste on the extra args if the loader needs them (ie, the #! |
| interpreter and its argument) */ |
| argc = 0; |
| if (info->interp_name != NULL) { |
| argc++; |
| stringsize += VG_(strlen)(info->interp_name) + 1; |
| } |
| if (info->interp_args != NULL) { |
| argc++; |
| stringsize += VG_(strlen)(info->interp_args) + 1; |
| } |
| |
| /* now scan the args we're given... */ |
| if (have_exename) |
| stringsize += VG_(strlen)( VG_(args_the_exename) ) + 1; |
| |
| for (i = 0; i < VG_(args_for_client).used; i++) { |
| argc++; |
| stringsize += VG_(strlen)( VG_(args_for_client).strs[i] ) + 1; |
| } |
| |
| /* ...and the environment */ |
| envc = 0; |
| for (cpp = orig_envp; cpp && *cpp; cpp++) { |
| envc++; |
| stringsize += VG_(strlen)(*cpp) + 1; |
| } |
| |
| /* now, how big is the auxv? */ |
| auxsize = sizeof(*auxv); /* there's always at least one entry: AT_NULL */ |
| for (cauxv = orig_auxv; cauxv->a_type != AT_NULL; cauxv++) { |
| if (cauxv->a_type == AT_PLATFORM) |
| stringsize += VG_(strlen)(cauxv->u.a_ptr) + 1; |
| auxsize += sizeof(*cauxv); |
| } |
| |
| # if defined(VGP_ppc32_linux) || defined(VGP_ppc64_linux) |
| auxsize += 2 * sizeof(*cauxv); |
| # endif |
| |
| /* OK, now we know how big the client stack is */ |
| stacksize = |
| sizeof(Word) + /* argc */ |
| (have_exename ? sizeof(char **) : 0) + /* argc[0] == exename */ |
| sizeof(char **)*argc + /* argv */ |
| sizeof(char **) + /* terminal NULL */ |
| sizeof(char **)*envc + /* envp */ |
| sizeof(char **) + /* terminal NULL */ |
| auxsize + /* auxv */ |
| VG_ROUNDUP(stringsize, sizeof(Word)); /* strings (aligned) */ |
| |
| if (0) VG_(printf)("stacksize = %d\n", stacksize); |
| |
| /* client_SP is the client's stack pointer */ |
| client_SP = clstack_end - stacksize; |
| client_SP = VG_ROUNDDN(client_SP, 16); /* make stack 16 byte aligned */ |
| |
| /* base of the string table (aligned) */ |
| stringbase = strtab = (char *)clstack_end |
| - VG_ROUNDUP(stringsize, sizeof(int)); |
| |
| clstack_start = VG_PGROUNDDN(client_SP); |
| |
| /* The max stack size */ |
| clstack_max_size = VG_PGROUNDUP(clstack_max_size); |
| |
| /* Record stack extent -- needed for stack-change code. */ |
| VG_(clstk_base) = clstack_start; |
| VG_(clstk_end) = clstack_end; |
| |
| if (0) |
| VG_(printf)("stringsize=%d auxsize=%d stacksize=%d maxsize=0x%x\n" |
| "clstack_start %p\n" |
| "clstack_end %p\n", |
| stringsize, auxsize, stacksize, (Int)clstack_max_size, |
| (void*)clstack_start, (void*)clstack_end); |
| |
| /* ==================== allocate space ==================== */ |
| |
| { SizeT anon_size = clstack_end - clstack_start + 1; |
| SizeT resvn_size = clstack_max_size - anon_size; |
| Addr anon_start = clstack_start; |
| Addr resvn_start = anon_start - resvn_size; |
| SizeT inner_HACK = 0; |
| Bool ok; |
| |
| vg_assert(VG_IS_PAGE_ALIGNED(anon_size)); |
| vg_assert(VG_IS_PAGE_ALIGNED(resvn_size)); |
| vg_assert(VG_IS_PAGE_ALIGNED(anon_start)); |
| vg_assert(VG_IS_PAGE_ALIGNED(resvn_start)); |
| vg_assert(resvn_start == clstack_end + 1 - clstack_max_size); |
| |
| # ifdef ENABLE_INNER |
| inner_HACK = 1024*1024; // create 1M non-fault-extending stack |
| # endif |
| |
| if (0) |
| VG_(printf)("%p 0x%x %p 0x%x\n", |
| resvn_start, resvn_size, anon_start, anon_size); |
| |
| /* Create a shrinkable reservation followed by an anonymous |
| segment. Together these constitute a growdown stack. */ |
| ok = VG_(am_create_reservation)( |
| resvn_start, |
| resvn_size -inner_HACK, |
| SmUpper, |
| anon_size +inner_HACK |
| ); |
| vg_assert(ok); |
| /* allocate a stack - mmap enough space for the stack */ |
| res = VG_(am_mmap_anon_fixed_client)( |
| anon_start -inner_HACK, |
| anon_size +inner_HACK, |
| VKI_PROT_READ|VKI_PROT_WRITE|VKI_PROT_EXEC |
| ); |
| vg_assert(!res.isError); |
| } |
| |
| /* ==================== create client stack ==================== */ |
| |
| ptr = (Addr*)client_SP; |
| |
| /* --- client argc --- */ |
| *ptr++ = argc + (have_exename ? 1 : 0); |
| |
| /* --- client argv --- */ |
| if (info->interp_name) { |
| *ptr++ = (Addr)copy_str(&strtab, info->interp_name); |
| VG_(free)(info->interp_name); |
| } |
| if (info->interp_args) { |
| *ptr++ = (Addr)copy_str(&strtab, info->interp_args); |
| VG_(free)(info->interp_args); |
| } |
| |
| if (have_exename) |
| *ptr++ = (Addr)copy_str(&strtab, VG_(args_the_exename)); |
| |
| for (i = 0; i < VG_(args_for_client).used; i++) { |
| *ptr++ = (Addr)copy_str(&strtab, VG_(args_for_client).strs[i]); |
| } |
| *ptr++ = 0; |
| |
| /* --- envp --- */ |
| VG_(client_envp) = (Char **)ptr; |
| for (cpp = orig_envp; cpp && *cpp; ptr++, cpp++) |
| *ptr = (Addr)copy_str(&strtab, *cpp); |
| *ptr++ = 0; |
| |
| /* --- auxv --- */ |
| auxv = (struct ume_auxv *)ptr; |
| *client_auxv = (UInt *)auxv; |
| |
| # if defined(VGP_ppc32_linux) || defined(VGP_ppc64_linux) |
| auxv[0].a_type = AT_IGNOREPPC; |
| auxv[0].u.a_val = AT_IGNOREPPC; |
| auxv[1].a_type = AT_IGNOREPPC; |
| auxv[1].u.a_val = AT_IGNOREPPC; |
| auxv += 2; |
| # endif |
| |
| for (; orig_auxv->a_type != AT_NULL; auxv++, orig_auxv++) { |
| |
| /* copy the entry... */ |
| *auxv = *orig_auxv; |
| |
| /* ...and fix up / examine the copy */ |
| switch(auxv->a_type) { |
| |
| case AT_IGNORE: |
| case AT_PHENT: |
| case AT_PAGESZ: |
| case AT_FLAGS: |
| case AT_NOTELF: |
| case AT_UID: |
| case AT_EUID: |
| case AT_GID: |
| case AT_EGID: |
| case AT_CLKTCK: |
| case AT_FPUCW: |
| /* All these are pointerless, so we don't need to do |
| anything about them. */ |
| break; |
| |
| case AT_PHDR: |
| if (info->phdr == 0) |
| auxv->a_type = AT_IGNORE; |
| else |
| auxv->u.a_val = info->phdr; |
| break; |
| |
| case AT_PHNUM: |
| if (info->phdr == 0) |
| auxv->a_type = AT_IGNORE; |
| else |
| auxv->u.a_val = info->phnum; |
| break; |
| |
| case AT_BASE: |
| auxv->u.a_val = info->interp_base; |
| break; |
| |
| case AT_PLATFORM: |
| /* points to a platform description string */ |
| auxv->u.a_ptr = copy_str(&strtab, orig_auxv->u.a_ptr); |
| break; |
| |
| case AT_ENTRY: |
| auxv->u.a_val = info->entry; |
| break; |
| |
| case AT_HWCAP: |
| break; |
| |
| case AT_DCACHEBSIZE: |
| case AT_ICACHEBSIZE: |
| case AT_UCACHEBSIZE: |
| # if defined(VGP_ppc32_linux) |
| /* acquire cache info */ |
| if (auxv->u.a_val > 0) { |
| VG_(machine_ppc32_set_clszB)( auxv->u.a_val ); |
| VG_(debugLog)(2, "main", |
| "PPC32 cache line size %u (type %u)\n", |
| (UInt)auxv->u.a_val, (UInt)auxv->a_type ); |
| } |
| # elif defined(VGP_ppc64_linux) |
| /* acquire cache info */ |
| if (auxv->u.a_val > 0) { |
| VG_(machine_ppc64_set_clszB)( auxv->u.a_val ); |
| VG_(debugLog)(2, "main", |
| "PPC64 cache line size %u (type %u)\n", |
| (UInt)auxv->u.a_val, (UInt)auxv->a_type ); |
| } |
| # endif |
| break; |
| |
| # if defined(VGP_ppc32_linux) || defined(VGP_ppc64_linux) |
| case AT_IGNOREPPC: |
| break; |
| # endif |
| |
| case AT_SECURE: |
| /* If this is 1, then it means that this program is |
| running suid, and therefore the dynamic linker should |
| be careful about LD_PRELOAD, etc. However, since |
| stage1 (the thing the kernel actually execve's) should |
| never be SUID, and we need LD_PRELOAD to work for the |
| client, we set AT_SECURE to 0. */ |
| auxv->u.a_val = 0; |
| break; |
| |
| case AT_SYSINFO: |
| # if !defined(VGP_ppc32_linux) && !defined(VGP_ppc64_linux) |
| case AT_SYSINFO_EHDR: |
| # endif |
| /* Trash this, because we don't reproduce it */ |
| auxv->a_type = AT_IGNORE; |
| break; |
| |
| default: |
| /* stomp out anything we don't know about */ |
| VG_(debugLog)(2, "main", |
| "stomping auxv entry %lld\n", |
| (ULong)auxv->a_type); |
| auxv->a_type = AT_IGNORE; |
| break; |
| } |
| } |
| *auxv = *orig_auxv; |
| vg_assert(auxv->a_type == AT_NULL); |
| |
| vg_assert((strtab-stringbase) == stringsize); |
| |
| /* client_SP is pointing at client's argc/argv */ |
| |
| if (0) VG_(printf)("startup SP = %p\n", client_SP); |
| return client_SP; |
| } |
| |
| |
| /* Allocate the client data segment. It is an expandable anonymous |
| mapping abutting a shrinkable reservation of size max_dseg_size. |
| The data segment starts at VG_(brk_base), which is page-aligned, |
| and runs up to VG_(brk_limit), which isn't. */ |
| |
| static void setup_client_dataseg ( SizeT max_size ) |
| { |
| Bool ok; |
| SysRes sres; |
| Addr anon_start = VG_(brk_base); |
| SizeT anon_size = VKI_PAGE_SIZE; |
| Addr resvn_start = anon_start + anon_size; |
| SizeT resvn_size = max_size - anon_size; |
| |
| vg_assert(VG_IS_PAGE_ALIGNED(anon_size)); |
| vg_assert(VG_IS_PAGE_ALIGNED(resvn_size)); |
| vg_assert(VG_IS_PAGE_ALIGNED(anon_start)); |
| vg_assert(VG_IS_PAGE_ALIGNED(resvn_start)); |
| |
| /* Because there's been no brk activity yet: */ |
| vg_assert(VG_(brk_base) == VG_(brk_limit)); |
| |
| /* Try to create the data seg and associated reservation where |
| VG_(brk_base) says. */ |
| ok = VG_(am_create_reservation)( |
| resvn_start, |
| resvn_size, |
| SmLower, |
| anon_size |
| ); |
| |
| if (!ok) { |
| /* Hmm, that didn't work. Well, let aspacem suggest an address |
| it likes better, and try again with that. */ |
| anon_start = VG_(am_get_advisory_client_simple) |
| ( 0/*floating*/, anon_size+resvn_size, &ok ); |
| if (ok) { |
| resvn_start = anon_start + anon_size; |
| ok = VG_(am_create_reservation)( |
| resvn_start, |
| resvn_size, |
| SmLower, |
| anon_size |
| ); |
| if (ok) |
| VG_(brk_base) = VG_(brk_limit) = anon_start; |
| } |
| /* that too might have failed, but if it has, we're hosed: there |
| is no Plan C. */ |
| } |
| vg_assert(ok); |
| |
| /* We make the data segment (heap) executable because LinuxThreads on |
| ppc32 creates trampolines in this area. Also, on x86/Linux the data |
| segment is RWX natively, at least according to /proc/self/maps. |
| Also, having a non-executable data seg would kill any program which |
| tried to create code in the data seg and then run it. */ |
| sres = VG_(am_mmap_anon_fixed_client)( |
| anon_start, |
| anon_size, |
| VKI_PROT_READ|VKI_PROT_WRITE|VKI_PROT_EXEC |
| ); |
| vg_assert(!sres.isError); |
| vg_assert(sres.val == anon_start); |
| } |
| |
| |
| /*====================================================================*/ |
| /*=== Find executable ===*/ |
| /*====================================================================*/ |
| |
| /* Scan a colon-separated list, and call a function on each element. |
| The string must be mutable, because we insert a temporary '\0', but |
| the string will end up unmodified. (*func) should return True if it |
| doesn't need to see any more. |
| |
| This routine will return True if (*func) returns True and False if |
| it reaches the end of the list without that happening. |
| */ |
| static Bool scan_colsep(char *colsep, Bool (*func)(const char *)) |
| { |
| char *cp, *entry; |
| int end; |
| |
| if (colsep == NULL || |
| *colsep == '\0') |
| return False; |
| |
| entry = cp = colsep; |
| |
| do { |
| end = (*cp == '\0'); |
| |
| if (*cp == ':' || *cp == '\0') { |
| char save = *cp; |
| |
| *cp = '\0'; |
| if ((*func)(entry)) { |
| *cp = save; |
| return True; |
| } |
| *cp = save; |
| entry = cp+1; |
| } |
| cp++; |
| } while(!end); |
| |
| return False; |
| } |
| |
| /* Need a static copy because can't use dynamic mem allocation yet */ |
| static HChar executable_name_in [VKI_PATH_MAX]; |
| static HChar executable_name_out[VKI_PATH_MAX]; |
| |
| static Bool match_executable(const char *entry) |
| { |
| HChar buf[VG_(strlen)(entry) + VG_(strlen)(executable_name_in) + 3]; |
| |
| /* empty PATH element means '.' */ |
| if (*entry == '\0') |
| entry = "."; |
| |
| VG_(snprintf)(buf, sizeof(buf), "%s/%s", entry, executable_name_in); |
| |
| // Don't match directories |
| if (VG_(is_dir)(buf)) |
| return False; |
| |
| // If we match an executable, we choose that immediately. If we find a |
| // matching non-executable we remember it but keep looking for an |
| // matching executable later in the path. |
| if (VG_(access)(buf, True/*r*/, False/*w*/, True/*x*/) == 0) { |
| VG_(strncpy)( executable_name_out, buf, VKI_PATH_MAX-1 ); |
| executable_name_out[VKI_PATH_MAX-1] = 0; |
| return True; // Stop looking |
| } else if (VG_(access)(buf, True/*r*/, False/*w*/, False/*x*/) == 0 |
| && VG_STREQ(executable_name_out, "")) |
| { |
| VG_(strncpy)( executable_name_out, buf, VKI_PATH_MAX-1 ); |
| executable_name_out[VKI_PATH_MAX-1] = 0; |
| return False; // Keep looking |
| } else { |
| return False; // Keep looking |
| } |
| } |
| |
| // Returns NULL if it wasn't found. |
| static HChar* find_executable ( HChar* exec ) |
| { |
| vg_assert(NULL != exec); |
| if (VG_(strchr)(exec, '/')) { |
| // Has a '/' - use the name as is |
| VG_(strncpy)( executable_name_out, exec, VKI_PATH_MAX-1 ); |
| } else { |
| // No '/' - we need to search the path |
| HChar* path; |
| VG_(strncpy)( executable_name_in, exec, VKI_PATH_MAX-1 ); |
| VG_(memset) ( executable_name_out, 0, VKI_PATH_MAX ); |
| path = VG_(getenv)("PATH"); |
| scan_colsep(path, match_executable); |
| } |
| return VG_STREQ(executable_name_out, "") ? NULL : executable_name_out; |
| } |
| |
| |
| /*====================================================================*/ |
| /*=== Command line errors ===*/ |
| /*====================================================================*/ |
| |
| static void revert_to_stderr ( void ) |
| { |
| vg_assert( !VG_(logging_to_socket) ); |
| VG_(clo_log_fd) = 2; /* stderr */ |
| } |
| |
| void VG_(bad_option) ( Char* opt ) |
| { |
| revert_to_stderr(); |
| VG_(printf)("valgrind: Bad option '%s'; aborting.\n", opt); |
| VG_(printf)("valgrind: Use --help for more information.\n"); |
| VG_(exit)(1); |
| } |
| |
| static void missing_prog ( void ) |
| { |
| revert_to_stderr(); |
| VG_(printf)("valgrind: no program specified\n"); |
| VG_(printf)("valgrind: Use --help for more information.\n"); |
| VG_(exit)(1); |
| } |
| |
| static void config_error ( Char* msg ) |
| { |
| revert_to_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); |
| } |
| |
| |
| /*====================================================================*/ |
| /*=== Loading the client ===*/ |
| /*====================================================================*/ |
| |
| /* Load the client whose name is VG_(argv_the_exename). */ |
| |
| static void load_client ( /*OUT*/ExeInfo* info, |
| /*OUT*/Addr* client_ip, |
| /*OUT*/Addr* client_toc) |
| { |
| HChar* exe_name; |
| Int ret; |
| SysRes res; |
| |
| vg_assert( VG_(args_the_exename) != NULL); |
| exe_name = find_executable( VG_(args_the_exename) ); |
| |
| if (!exe_name) { |
| VG_(printf)("valgrind: %s: command not found\n", VG_(args_the_exename)); |
| VG_(exit)(127); // 127 is Posix NOTFOUND |
| } |
| |
| VG_(memset)(info, 0, sizeof(*info)); |
| info->exe_base = VG_(client_base); |
| info->exe_end = VG_(client_end); |
| |
| ret = VG_(do_exec)(exe_name, info); |
| |
| // The client was successfully loaded! Continue. |
| |
| /* Get hold of a file descriptor which refers to the client |
| executable. This is needed for attaching to GDB. */ |
| res = VG_(open)(exe_name, VKI_O_RDONLY, VKI_S_IRUSR); |
| if (!res.isError) |
| VG_(cl_exec_fd) = res.val; |
| |
| /* Copy necessary bits of 'info' that were filled in */ |
| *client_ip = info->init_ip; |
| *client_toc = info->init_toc; |
| VG_(brk_base) = VG_(brk_limit) = VG_PGROUNDUP(info->brkbase); |
| } |
| |
| |
| /*====================================================================*/ |
| /*=== Command-line: variables, processing, etc ===*/ |
| /*====================================================================*/ |
| |
| // See pub_{core,tool}_options.h for explanations of all these. |
| |
| static void usage_NORETURN ( Bool debug_help ) |
| { |
| 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" |
| " -h --help show this message\n" |
| " --help-debug show this message, plus debugging options\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" |
| " --time-stamp=no|yes add timestamps to log messages? [no]\n" |
| " --log-fd=<number> log messages to file descriptor [2=stderr]\n" |
| " --log-file=<file> log messages to <file>.<pid>\n" |
| " --log-file-exactly=<file> log messages to <file>\n" |
| " --log-file-qualifier=<VAR> incorporate $VAR in logfile name [none]\n" |
| " --log-socket=ipaddr:port log messages to socket ipaddr:port\n" |
| "\n" |
| " uncommon user options for all Valgrind tools:\n" |
| " --run-libc-freeres=no|yes free up glibc memory at exit? [yes]\n" |
| " --sim-hints=hint1,hint2,... known hints:\n" |
| " lax-ioctls, enable-outer [none]\n" |
| " --show-emwarns=no|yes show warnings about emulation limits? [no]\n" |
| " --smc-check=none|stack|all checks for self-modifying code: none,\n" |
| " only for code found in stacks, or all [stack]\n" |
| " --kernel-variant=variant1,variant2,... known variants: bproc [none]\n" |
| " handle non-standard kernel variants\n" |
| "\n" |
| " user options for Valgrind tools that report errors:\n" |
| " --xml=yes all output is in XML (Memcheck/Nulgrind only)\n" |
| " --xml-user-comment=STR copy STR verbatim to XML output\n" |
| " --demangle=no|yes automatically demangle C++ names? [yes]\n" |
| " --num-callers=<number> show <number> callers in stack traces [12]\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|all print suppressions for errors? [no]\n" |
| " --db-attach=no|yes start debugger when errors detected? [no]\n" |
| " --db-command=<command> command to start debugger [gdb -nw %%f %%p]\n" |
| " --input-fd=<number> file descriptor for input [0=stdin]\n" |
| " --max-stackframe=<number> assume stack switch for SP changes larger\n" |
| " than <number> bytes [2000000]\n" |
| "\n"; |
| |
| Char* usage2 = |
| "\n" |
| " debugging options for all Valgrind tools:\n" |
| " --sanity-level=<number> level of sanity checking to do [1]\n" |
| " --trace-flags=<XXXXXXXX> show generated code? (X = 0|1) [00000000]\n" |
| " --profile-flags=<XXXXXXXX> ditto, but for profiling (X = 0|1) [00000000]\n" |
| " --trace-notbelow=<number> only show BBs above <number> [999999999]\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-cfi=no|yes show call-frame-info details? [no]\n" |
| " --trace-redir=no|yes show redirection details? [no]\n" |
| " --trace-sched=no|yes show thread scheduler details? [no]\n" |
| " --wait-for-gdb=yes|no pause on startup to wait for gdb attach\n" |
| #if 0 |
| " --model-pthreads=yes|no model the pthreads library [no]\n" |
| #endif |
| " --command-line-only=no|yes only use command line options [no]\n" |
| "\n" |
| " --vex-iropt-verbosity 0 .. 9 [0]\n" |
| " --vex-iropt-level 0 .. 2 [2]\n" |
| " --vex-iropt-precise-memory-exns [no]\n" |
| " --vex-iropt-unroll-thresh 0 .. 400 [120]\n" |
| " --vex-guest-max-insns 1 .. 100 [50]\n" |
| " --vex-guest-chase-thresh 0 .. 99 [10]\n" |
| "\n" |
| " --trace-flags and --profile-flags values (omit the middle space):\n" |
| " 1000 0000 show conversion into IR\n" |
| " 0100 0000 show after initial opt\n" |
| " 0010 0000 show after instrumentation\n" |
| " 0001 0000 show after second opt\n" |
| " 0000 1000 show after tree building\n" |
| " 0000 0100 show selecting insns\n" |
| " 0000 0010 show after reg-alloc\n" |
| " 0000 0001 show final assembly\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 read from ~/.valgrindrc, $VALGRIND_OPTS, ./.valgrindrc\n" |
| "\n" |
| " Valgrind is Copyright (C) 2000-2005 Julian Seward et al.\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"; |
| |
| // Ensure the message goes to stdout |
| VG_(clo_log_fd) = 1; |
| vg_assert( !VG_(logging_to_socket) ); |
| |
| VG_(printf)(usage1); |
| if (VG_(details).name) { |
| VG_(printf)(" user options for %s:\n", VG_(details).name); |
| if (VG_(needs).command_line_options) |
| VG_TDICT_CALL(tool_print_usage); |
| else |
| VG_(printf)(" (none)\n"); |
| } |
| if (debug_help) { |
| VG_(printf)(usage2); |
| |
| if (VG_(details).name) { |
| VG_(printf)(" debugging options for %s:\n", VG_(details).name); |
| |
| if (VG_(needs).command_line_options) |
| VG_TDICT_CALL(tool_print_debug_usage); |
| else |
| VG_(printf)(" (none)\n"); |
| } |
| } |
| VG_(printf)(usage3, VG_BUGS_TO); |
| VG_(exit)(0); |
| } |
| |
| |
| /* Peer at previously set up VG_(args_for_valgrind) and extract any |
| request for help and also the tool name. */ |
| |
| static void get_helprequest_and_toolname ( Int* need_help, HChar** tool ) |
| { |
| UInt i; |
| HChar* str; |
| |
| /* parse the options we have (only the options we care about now) */ |
| for (i = 0; i < VG_(args_for_valgrind).used; i++) { |
| |
| str = VG_(args_for_valgrind).strs[i]; |
| vg_assert(str); |
| |
| if (VG_STREQ(str, "--version")) { |
| // Ensure the version string goes to stdout |
| VG_(clo_log_fd) = 1; |
| VG_(printf)("valgrind-" VERSION "\n"); |
| VG_(exit)(0); |
| |
| } else if (VG_CLO_STREQ(str, "--help") || |
| VG_CLO_STREQ(str, "-h")) { |
| *need_help = 1; |
| |
| } else if (VG_CLO_STREQ(str, "--help-debug")) { |
| *need_help = 2; |
| |
| // The tool has already been determined, but we need to know the name |
| // here. |
| } else if (VG_CLO_STREQN(7, str, "--tool=")) { |
| *tool = &str[7]; |
| } |
| } |
| } |
| |
| static Bool process_cmd_line_options( UInt* client_auxv, const char* toolname ) |
| { |
| // VG_(clo_log_fd) is used by all the messaging. It starts as 2 (stderr) |
| // and we cannot change it until we know what we are changing it to is |
| // ok. So we have tmp_log_fd to hold the tmp fd prior to that point. |
| SysRes sres; |
| Int i, tmp_log_fd; |
| Int toolname_len = VG_(strlen)(toolname); |
| enum { |
| VgLogTo_Fd, |
| VgLogTo_File, |
| VgLogTo_FileExactly, |
| VgLogTo_Socket |
| } log_to = VgLogTo_Fd; // Where is logging output to be sent? |
| |
| /* log to stderr by default, but usage message goes to stdout */ |
| tmp_log_fd = 2; |
| |
| /* Check for sane path in ./configure --prefix=... */ |
| if (VG_LIBDIR[0] != '/') |
| config_error("Please use absolute paths in " |
| "./configure --prefix=... or --libdir=..."); |
| |
| for (i = 0; i < VG_(args_for_valgrind).used; i++) { |
| |
| HChar* arg = VG_(args_for_valgrind).strs[i]; |
| HChar* colon = arg; |
| |
| /* Look for a colon in the switch name */ |
| while (*colon && *colon != ':' && *colon != '=') |
| colon++; |
| |
| /* Look for matching "--toolname:foo" */ |
| if (*colon == ':') { |
| if (VG_CLO_STREQN(2, arg, "--") && |
| VG_CLO_STREQN(toolname_len, arg+2, toolname) && |
| VG_CLO_STREQN(1, arg+2+toolname_len, ":")) |
| { |
| // prefix matches, convert "--toolname:foo" to "--foo" |
| if (0) |
| VG_(printf)("tool-specific arg: %s\n", arg); |
| arg = VG_(strdup)(arg + toolname_len + 1); |
| arg[0] = '-'; |
| arg[1] = '-'; |
| |
| } else { |
| // prefix doesn't match, skip to next arg |
| continue; |
| } |
| } |
| |
| /* Ignore these options - they've already been handled */ |
| if (VG_CLO_STREQN( 7, arg, "--tool=")) goto skip_arg; |
| if (VG_CLO_STREQN(20, arg, "--command-line-only=")) goto skip_arg; |
| |
| if ( VG_CLO_STREQ(arg, "--")) goto skip_arg; |
| |
| else if (VG_CLO_STREQ(arg, "-v") || |
| VG_CLO_STREQ(arg, "--verbose")) |
| VG_(clo_verbosity)++; |
| |
| else if (VG_CLO_STREQ(arg, "-q") || |
| VG_CLO_STREQ(arg, "--quiet")) |
| VG_(clo_verbosity)--; |
| |
| else if (VG_CLO_STREQ(arg, "-d")) { |
| /* do nothing */ |
| } |
| |
| else VG_BOOL_CLO(arg, "--xml", VG_(clo_xml)) |
| else VG_BOOL_CLO(arg, "--db-attach", VG_(clo_db_attach)) |
| else VG_BOOL_CLO(arg, "--demangle", VG_(clo_demangle)) |
| else VG_BOOL_CLO(arg, "--error-limit", VG_(clo_error_limit)) |
| else VG_BOOL_CLO(arg, "--show-emwarns", VG_(clo_show_emwarns)) |
| else VG_NUM_CLO (arg, "--max-stackframe", VG_(clo_max_stackframe)) |
| else VG_BOOL_CLO(arg, "--run-libc-freeres", VG_(clo_run_libc_freeres)) |
| else VG_BOOL_CLO(arg, "--show-below-main", VG_(clo_show_below_main)) |
| else VG_BOOL_CLO(arg, "--time-stamp", VG_(clo_time_stamp)) |
| else VG_BOOL_CLO(arg, "--track-fds", VG_(clo_track_fds)) |
| else VG_BOOL_CLO(arg, "--trace-children", VG_(clo_trace_children)) |
| else VG_BOOL_CLO(arg, "--trace-sched", VG_(clo_trace_sched)) |
| else VG_BOOL_CLO(arg, "--trace-signals", VG_(clo_trace_signals)) |
| else VG_BOOL_CLO(arg, "--trace-symtab", VG_(clo_trace_symtab)) |
| else VG_BOOL_CLO(arg, "--trace-cfi", VG_(clo_trace_cfi)) |
| else VG_BOOL_CLO(arg, "--trace-redir", VG_(clo_trace_redir)) |
| else VG_BOOL_CLO(arg, "--trace-syscalls", VG_(clo_trace_syscalls)) |
| else VG_BOOL_CLO(arg, "--trace-pthreads", VG_(clo_trace_pthreads)) |
| else VG_BOOL_CLO(arg, "--wait-for-gdb", VG_(clo_wait_for_gdb)) |
| else VG_BOOL_CLO(arg, "--model-pthreads", VG_(clo_model_pthreads)) |
| |
| else VG_STR_CLO (arg, "--db-command", VG_(clo_db_command)) |
| else VG_STR_CLO (arg, "--sim-hints", VG_(clo_sim_hints)) |
| |
| else VG_NUM_CLO (arg, "--dump-error", VG_(clo_dump_error)) |
| else VG_NUM_CLO (arg, "--input-fd", VG_(clo_input_fd)) |
| else VG_NUM_CLO (arg, "--sanity-level", VG_(clo_sanity_level)) |
| else VG_BNUM_CLO(arg, "--num-callers", VG_(clo_backtrace_size), 1, |
| VG_DEEPEST_BACKTRACE) |
| |
| else if (VG_CLO_STREQ(arg, "--smc-check=none")) |
| VG_(clo_smc_check) = Vg_SmcNone; |
| else if (VG_CLO_STREQ(arg, "--smc-check=stack")) |
| VG_(clo_smc_check) = Vg_SmcStack; |
| else if (VG_CLO_STREQ(arg, "--smc-check=all")) |
| VG_(clo_smc_check) = Vg_SmcAll; |
| |
| else VG_STR_CLO (arg, "--kernel-variant", VG_(clo_kernel_variant)) |
| |
| else VG_BNUM_CLO(arg, "--vex-iropt-verbosity", |
| VG_(clo_vex_control).iropt_verbosity, 0, 10) |
| else VG_BNUM_CLO(arg, "--vex-iropt-level", |
| VG_(clo_vex_control).iropt_level, 0, 2) |
| else VG_BOOL_CLO(arg, "--vex-iropt-precise-memory-exns", |
| VG_(clo_vex_control).iropt_precise_memory_exns) |
| else VG_BNUM_CLO(arg, "--vex-iropt-unroll-thresh", |
| VG_(clo_vex_control).iropt_unroll_thresh, 0, 400) |
| else VG_BNUM_CLO(arg, "--vex-guest-max-insns", |
| VG_(clo_vex_control).guest_max_insns, 1, 100) |
| else VG_BNUM_CLO(arg, "--vex-guest-chase-thresh", |
| VG_(clo_vex_control).guest_chase_thresh, 0, 99) |
| |
| else if (VG_CLO_STREQN(9, arg, "--log-fd=")) { |
| log_to = VgLogTo_Fd; |
| VG_(clo_log_name) = NULL; |
| tmp_log_fd = (Int)VG_(atoll)(&arg[9]); |
| } |
| |
| else if (VG_CLO_STREQN(11, arg, "--log-file=")) { |
| log_to = VgLogTo_File; |
| VG_(clo_log_name) = &arg[11]; |
| } |
| |
| else if (VG_CLO_STREQN(21, arg, "--log-file-qualifier=")) { |
| VG_(clo_log_file_qualifier) = &arg[21]; |
| } |
| |
| else if (VG_CLO_STREQN(19, arg, "--log-file-exactly=")) { |
| log_to = VgLogTo_FileExactly; |
| VG_(clo_log_name) = &arg[19]; |
| } |
| |
| else if (VG_CLO_STREQN(13, arg, "--log-socket=")) { |
| log_to = VgLogTo_Socket; |
| VG_(clo_log_name) = &arg[13]; |
| } |
| |
| else if (VG_CLO_STREQN(19, arg, "--xml-user-comment=")) { |
| VG_(clo_xml_user_comment) = &arg[19]; |
| } |
| |
| else if (VG_CLO_STREQN(15, arg, "--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)(arg); |
| } |
| VG_(clo_suppressions)[VG_(clo_n_suppressions)] = &arg[15]; |
| VG_(clo_n_suppressions)++; |
| } |
| |
| /* "stuvwxyz" --> stuvwxyz (binary) */ |
| else if (VG_CLO_STREQN(14, arg, "--trace-flags=")) { |
| Int j; |
| char* opt = & arg[14]; |
| |
| if (8 != VG_(strlen)(opt)) { |
| VG_(message)(Vg_UserMsg, |
| "--trace-flags argument must have 8 digits"); |
| VG_(bad_option)(arg); |
| } |
| for (j = 0; j < 8; j++) { |
| if ('0' == opt[j]) { /* do nothing */ } |
| else if ('1' == opt[j]) VG_(clo_trace_flags) |= (1 << (7-j)); |
| else { |
| VG_(message)(Vg_UserMsg, "--trace-flags argument can only " |
| "contain 0s and 1s"); |
| VG_(bad_option)(arg); |
| } |
| } |
| } |
| |
| /* "stuvwxyz" --> stuvwxyz (binary) */ |
| else if (VG_CLO_STREQN(16, arg, "--profile-flags=")) { |
| Int j; |
| char* opt = & arg[16]; |
| |
| if (8 != VG_(strlen)(opt)) { |
| VG_(message)(Vg_UserMsg, |
| "--profile-flags argument must have 8 digits"); |
| VG_(bad_option)(arg); |
| } |
| for (j = 0; j < 8; j++) { |
| if ('0' == opt[j]) { /* do nothing */ } |
| else if ('1' == opt[j]) VG_(clo_profile_flags) |= (1 << (7-j)); |
| else { |
| VG_(message)(Vg_UserMsg, "--profile-flags argument can only " |
| "contain 0s and 1s"); |
| VG_(bad_option)(arg); |
| } |
| } |
| } |
| |
| else VG_NUM_CLO (arg, "--trace-notbelow", VG_(clo_trace_notbelow)) |
| |
| else if (VG_CLO_STREQ(arg, "--gen-suppressions=no")) |
| VG_(clo_gen_suppressions) = 0; |
| else if (VG_CLO_STREQ(arg, "--gen-suppressions=yes")) |
| VG_(clo_gen_suppressions) = 1; |
| else if (VG_CLO_STREQ(arg, "--gen-suppressions=all")) |
| VG_(clo_gen_suppressions) = 2; |
| |
| else if ( ! VG_(needs).command_line_options |
| || ! VG_TDICT_CALL(tool_process_cmd_line_option, arg) ) { |
| VG_(bad_option)(arg); |
| } |
| skip_arg: |
| if (arg != VG_(args_for_valgrind).strs[i]) { |
| VG_(free)(arg); |
| } |
| } |
| |
| /* Make VEX control parameters sane */ |
| |
| if (VG_(clo_vex_control).guest_chase_thresh |
| >= VG_(clo_vex_control).guest_max_insns) |
| VG_(clo_vex_control).guest_chase_thresh |
| = VG_(clo_vex_control).guest_max_insns - 1; |
| |
| if (VG_(clo_vex_control).guest_chase_thresh < 0) |
| VG_(clo_vex_control).guest_chase_thresh = 0; |
| |
| /* Check various option values */ |
| |
| if (VG_(clo_verbosity) < 0) |
| VG_(clo_verbosity) = 0; |
| |
| if (VG_(clo_db_attach) && VG_(clo_trace_children)) { |
| VG_(message)(Vg_UserMsg, ""); |
| VG_(message)(Vg_UserMsg, |
| "--db-attach=yes conflicts with --trace-children=yes"); |
| VG_(message)(Vg_UserMsg, |
| "Please choose one or the other, but not both."); |
| VG_(bad_option)("--db-attach=yes and --trace-children=yes"); |
| } |
| |
| if (VG_(clo_gen_suppressions) > 0 && |
| !VG_(needs).core_errors && !VG_(needs).tool_errors) { |
| VG_(message)(Vg_UserMsg, |
| "Can't use --gen-suppressions= with this tool,"); |
| VG_(message)(Vg_UserMsg, |
| "as it doesn't generate errors."); |
| VG_(bad_option)("--gen-suppressions="); |
| } |
| |
| /* If we've been asked to emit XML, mash around various other |
| options so as to constrain the output somewhat, and to remove |
| any need for user input during the run. */ |
| if (VG_(clo_xml)) { |
| /* Disable suppression generation (requires user input) */ |
| VG_(clo_gen_suppressions) = 0; |
| /* Disable attaching to GDB (requires user input) */ |
| VG_(clo_db_attach) = False; |
| /* Set a known verbosity level */ |
| VG_(clo_verbosity) = 1; |
| /* Disable error limits (this might be a bad idea!) */ |
| VG_(clo_error_limit) = False; |
| /* Disable emulation warnings */ |
| VG_(clo_show_emwarns) = False; |
| /* Disable waiting for GDB to debug Valgrind */ |
| VG_(clo_wait_for_gdb) = False; |
| /* No file-descriptor leak checking yet */ |
| VG_(clo_track_fds) = False; |
| /* Disable timestamped output */ |
| VG_(clo_time_stamp) = False; |
| /* Also, we want to set options for the leak checker, but that |
| will have to be done in Memcheck's flag-handling code, not |
| here. */ |
| } |
| |
| /* All non-logging-related options have been checked. If the logging |
| option specified is ok, we can switch to it, as we know we won't |
| have to generate any other command-line-related error messages. |
| (So far we should be still attached to stderr, so we can show on |
| the terminal any problems to do with processing command line |
| opts.) |
| |
| So set up logging now. After this is done, VG_(clo_log_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. */ |
| |
| vg_assert(VG_(clo_log_fd) == 2 /* stderr */); |
| vg_assert(VG_(logging_to_socket) == False); |
| |
| switch (log_to) { |
| |
| case VgLogTo_Fd: |
| vg_assert(VG_(clo_log_name) == NULL); |
| break; |
| |
| case VgLogTo_File: { |
| HChar logfilename[1000]; |
| Int seq = 0; |
| Int pid = VG_(getpid)(); |
| HChar* qual = NULL; |
| |
| vg_assert(VG_(clo_log_name) != NULL); |
| vg_assert(VG_(strlen)(VG_(clo_log_name)) <= 900); /* paranoia */ |
| |
| if (VG_(clo_log_file_qualifier)) { |
| qual = VG_(getenv)(VG_(clo_log_file_qualifier)); |
| } |
| |
| for (;;) { |
| HChar pidtxt[20], seqtxt[20]; |
| |
| VG_(sprintf)(pidtxt, "%d", pid); |
| |
| if (seq == 0) |
| seqtxt[0] = 0; |
| else |
| VG_(sprintf)(seqtxt, ".%d", seq); |
| |
| seq++; |
| |
| /* Result: |
| if (qual) base_name ++ "." ++ qual ++ seqtxt |
| if (not qual) base_name ++ "." ++ pid ++ seqtxt |
| */ |
| VG_(sprintf)( logfilename, |
| "%s.%s%s", |
| VG_(clo_log_name), |
| qual ? qual : pidtxt, |
| seqtxt ); |
| |
| // EXCL: it will fail with EEXIST if the file already exists. |
| sres = VG_(open)(logfilename, |
| VKI_O_CREAT|VKI_O_WRONLY|VKI_O_EXCL|VKI_O_TRUNC, |
| VKI_S_IRUSR|VKI_S_IWUSR); |
| if (!sres.isError) { |
| tmp_log_fd = sres.val; |
| break; /* for (;;) */ |
| } else { |
| // If the file already existed, we try the next name. If it |
| // was some other file error, we give up. |
| if (sres.val != VKI_EEXIST) { |
| VG_(message)(Vg_UserMsg, |
| "Can't create/open log file '%s.%d'; giving up!", |
| VG_(clo_log_name), pid); |
| VG_(bad_option)( |
| "--log-file=<file> (didn't work out for some reason.)"); |
| /*NOTREACHED*/ |
| } |
| } |
| } |
| break; /* switch (VG_(clo_log_to)) */ |
| } |
| |
| case VgLogTo_FileExactly: { |
| vg_assert(VG_(clo_log_name) != NULL); |
| vg_assert(VG_(strlen)(VG_(clo_log_name)) <= 900); /* paranoia */ |
| |
| sres = VG_(open)(VG_(clo_log_name), |
| VKI_O_CREAT|VKI_O_WRONLY|VKI_O_TRUNC, |
| VKI_S_IRUSR|VKI_S_IWUSR); |
| if (!sres.isError) { |
| tmp_log_fd = sres.val; |
| } else { |
| VG_(message)(Vg_UserMsg, |
| "Can't create/open log file '%s'; giving up!", |
| VG_(clo_log_name)); |
| VG_(bad_option)( |
| "--log-file-exactly=<file> (didn't work out for some reason.)"); |
| /*NOTREACHED*/ |
| } |
| break; /* switch (VG_(clo_log_to)) */ |
| } |
| |
| case VgLogTo_Socket: { |
| vg_assert(VG_(clo_log_name) != NULL); |
| vg_assert(VG_(strlen)(VG_(clo_log_name)) <= 900); /* paranoia */ |
| tmp_log_fd = VG_(connect_via_socket)( VG_(clo_log_name) ); |
| if (tmp_log_fd == -1) { |
| VG_(message)(Vg_UserMsg, |
| "Invalid --log-socket=ipaddr or --log-socket=ipaddr:port spec"); |
| VG_(message)(Vg_UserMsg, |
| "of '%s'; giving up!", VG_(clo_log_name) ); |
| VG_(bad_option)( |
| "--log-socket="); |
| /*NOTREACHED*/ |
| } |
| if (tmp_log_fd == -2) { |
| VG_(message)(Vg_UserMsg, |
| "valgrind: failed to connect to logging server '%s'.", |
| VG_(clo_log_name) ); |
| VG_(message)(Vg_UserMsg, |
| "Log messages will sent to stderr instead." ); |
| VG_(message)(Vg_UserMsg, |
| "" ); |
| /* We don't change anything here. */ |
| vg_assert(VG_(clo_log_fd) == 2); |
| tmp_log_fd = 2; |
| } else { |
| vg_assert(tmp_log_fd > 0); |
| VG_(logging_to_socket) = True; |
| } |
| break; |
| } |
| } |
| |
| |
| /* Check that the requested tool actually supports XML output. */ |
| if (VG_(clo_xml) && !VG_STREQ(toolname, "memcheck") |
| && !VG_STREQ(toolname, "none")) { |
| VG_(clo_xml) = False; |
| VG_(message)(Vg_UserMsg, |
| "Currently only Memcheck|None supports XML output."); |
| VG_(bad_option)("--xml=yes"); |
| /*NOTREACHED*/ |
| } |
| |
| if (tmp_log_fd >= 0) { |
| // Move log_fd into the safe range, so it doesn't conflict with any app fds. |
| tmp_log_fd = VG_(fcntl)(tmp_log_fd, VKI_F_DUPFD, VG_(fd_hard_limit)); |
| if (tmp_log_fd < 0) { |
| VG_(message)(Vg_UserMsg, "valgrind: failed to move logfile fd into safe range, using stderr"); |
| VG_(clo_log_fd) = 2; // stderr |
| } else { |
| VG_(clo_log_fd) = tmp_log_fd; |
| VG_(fcntl)(VG_(clo_log_fd), VKI_F_SETFD, VKI_FD_CLOEXEC); |
| } |
| } else { |
| // If they said --log-fd=-1, don't print anything. Plausible for use in |
| // regression testing suites that use client requests to count errors. |
| VG_(clo_log_fd) = tmp_log_fd; |
| } |
| |
| if (VG_(clo_n_suppressions) < VG_CLO_MAX_SFILES-1 && |
| (VG_(needs).core_errors || VG_(needs).tool_errors)) { |
| /* If we haven't reached the max number of suppressions, load |
| the default one. */ |
| 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)++; |
| } |
| |
| return (log_to == VgLogTo_Fd); |
| } |
| |
| |
| /*====================================================================*/ |
| /*=== Printing the preamble ===*/ |
| /*====================================================================*/ |
| |
| /* 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. */ |
| static void print_preamble(Bool logging_to_fd, const char* toolname) |
| { |
| HChar* xpre = VG_(clo_xml) ? " <line>" : ""; |
| HChar* xpost = VG_(clo_xml) ? "</line>" : ""; |
| Int i; |
| |
| if (VG_(clo_xml)) { |
| VG_(message)(Vg_UserMsg, "<?xml version=\"1.0\"?>"); |
| VG_(message)(Vg_UserMsg, ""); |
| VG_(message)(Vg_UserMsg, "<valgrindoutput>"); |
| VG_(message)(Vg_UserMsg, ""); |
| VG_(message)(Vg_UserMsg, "<protocolversion>2</protocolversion>"); |
| VG_(message)(Vg_UserMsg, ""); |
| } |
| |
| if (VG_(clo_verbosity > 0)) { |
| |
| if (VG_(clo_xml)) |
| VG_(message)(Vg_UserMsg, "<preamble>"); |
| |
| /* Tool details */ |
| VG_(message)(Vg_UserMsg, "%s%s%s%s, %s.%s", |
| xpre, |
| VG_(details).name, |
| NULL == VG_(details).version ? "" : "-", |
| NULL == VG_(details).version |
| ? (Char*)"" : VG_(details).version, |
| VG_(details).description, |
| xpost); |
| VG_(message)(Vg_UserMsg, "%s%s%s", |
| xpre, VG_(details).copyright_author, xpost); |
| |
| /* Core details */ |
| VG_(message)(Vg_UserMsg, |
| "%sUsing LibVEX rev %s, a library for dynamic binary translation.%s", |
| xpre, LibVEX_Version(), xpost ); |
| VG_(message)(Vg_UserMsg, |
| "%sCopyright (C) 2004-2005, and GNU GPL'd, by OpenWorks LLP.%s", |
| xpre, xpost ); |
| VG_(message)(Vg_UserMsg, |
| "%sUsing valgrind-%s, a dynamic binary instrumentation framework.%s", |
| xpre, VERSION, xpost); |
| VG_(message)(Vg_UserMsg, |
| "%sCopyright (C) 2000-2005, and GNU GPL'd, by Julian Seward et al.%s", |
| xpre, xpost ); |
| |
| if (VG_(clo_verbosity) == 1 && !VG_(clo_xml)) |
| VG_(message)(Vg_UserMsg, "For more details, rerun with: -v"); |
| |
| if (VG_(clo_xml)) |
| VG_(message)(Vg_UserMsg, "</preamble>"); |
| } |
| |
| if (!VG_(clo_xml) && VG_(clo_verbosity) > 0 && !logging_to_fd) { |
| VG_(message)(Vg_UserMsg, ""); |
| VG_(message)(Vg_UserMsg, |
| "My PID = %d, parent PID = %d. Prog and args are:", |
| VG_(getpid)(), VG_(getppid)() ); |
| if (VG_(args_the_exename)) |
| VG_(message)(Vg_UserMsg, " %s", VG_(args_the_exename)); |
| for (i = 0; i < VG_(args_for_client).used; i++) |
| VG_(message)(Vg_UserMsg, " %s", VG_(args_for_client).strs[i]); |
| if (VG_(clo_log_file_qualifier)) { |
| HChar* val = VG_(getenv)(VG_(clo_log_file_qualifier)); |
| VG_(message)(Vg_UserMsg, ""); |
| VG_(message)(Vg_UserMsg, "Log file qualifier: var %s, value %s.", |
| VG_(clo_log_file_qualifier), |
| val ? val : ""); |
| } |
| } |
| else |
| if (VG_(clo_xml)) { |
| VG_(message)(Vg_UserMsg, ""); |
| VG_(message)(Vg_UserMsg, "<pid>%d</pid>", VG_(getpid)()); |
| VG_(message)(Vg_UserMsg, "<ppid>%d</ppid>", VG_(getppid)()); |
| VG_(message)(Vg_UserMsg, "<tool>%t</tool>", toolname); |
| if (VG_(clo_log_file_qualifier)) { |
| HChar* val = VG_(getenv)(VG_(clo_log_file_qualifier)); |
| VG_(message)(Vg_UserMsg, "<logfilequalifier> <var>%t</var> " |
| "<value>%t</value> </logfilequalifier>", |
| VG_(clo_log_file_qualifier), |
| val ? val : ""); |
| } |
| if (VG_(clo_xml_user_comment)) { |
| /* Note: the user comment itself is XML and is therefore to |
| be passed through verbatim (%s) rather than escaped |
| (%t). */ |
| VG_(message)(Vg_UserMsg, "<usercomment>%s</usercomment>", |
| VG_(clo_xml_user_comment)); |
| } |
| VG_(message)(Vg_UserMsg, ""); |
| VG_(message)(Vg_UserMsg, "<args>"); |
| |
| VG_(message)(Vg_UserMsg, " <vargv>"); |
| if (VG_(name_of_launcher)) |
| VG_(message)(Vg_UserMsg, " <exe>%t</exe>", |
| VG_(name_of_launcher)); |
| for (i = 0; i < VG_(args_for_valgrind).used; i++) { |
| VG_(message)(Vg_UserMsg, |
| " <arg>%t</arg>", |
| VG_(args_for_valgrind).strs[i]); |
| } |
| VG_(message)(Vg_UserMsg, " </vargv>"); |
| |
| VG_(message)(Vg_UserMsg, " <argv>"); |
| if (VG_(args_the_exename)) |
| VG_(message)(Vg_UserMsg, " <exe>%t</exe>", |
| VG_(args_the_exename)); |
| for (i = 0; i < VG_(args_for_client).used; i++) { |
| VG_(message)(Vg_UserMsg, " <arg>%t</arg>", |
| VG_(args_for_client).strs[i]); |
| } |
| VG_(message)(Vg_UserMsg, " </argv>"); |
| |
| VG_(message)(Vg_UserMsg, "</args>"); |
| } |
| |
| // Empty line after the preamble |
| if (VG_(clo_verbosity) > 0) |
| VG_(message)(Vg_UserMsg, ""); |
| |
| if (VG_(clo_verbosity) > 1) { |
| SysRes fd; |
| VexArch vex_arch; |
| VexArchInfo vex_archinfo; |
| if (!logging_to_fd) |
| VG_(message)(Vg_DebugMsg, ""); |
| VG_(message)(Vg_DebugMsg, "Command line"); |
| if (VG_(args_the_exename)) |
| VG_(message)(Vg_DebugMsg, " %s", VG_(args_the_exename)); |
| for (i = 0; i < VG_(args_for_client).used; i++) |
| VG_(message)(Vg_DebugMsg, " %s", VG_(args_for_client).strs[i]); |
| |
| VG_(message)(Vg_DebugMsg, "Startup, with flags:"); |
| for (i = 0; i < VG_(args_for_valgrind).used; i++) { |
| VG_(message)(Vg_DebugMsg, " %s", VG_(args_for_valgrind).strs[i]); |
| } |
| |
| VG_(message)(Vg_DebugMsg, "Contents of /proc/version:"); |
| fd = VG_(open) ( "/proc/version", VKI_O_RDONLY, 0 ); |
| if (fd.isError) { |
| VG_(message)(Vg_DebugMsg, " can't open /proc/version"); |
| } else { |
| # define BUF_LEN 256 |
| Char version_buf[BUF_LEN]; |
| Int n = VG_(read) ( fd.val, version_buf, BUF_LEN ); |
| vg_assert(n <= BUF_LEN); |
| if (n > 0) { |
| version_buf[n-1] = '\0'; |
| VG_(message)(Vg_DebugMsg, " %s", version_buf); |
| } else { |
| VG_(message)(Vg_DebugMsg, " (empty?)"); |
| } |
| VG_(close)(fd.val); |
| # undef BUF_LEN |
| } |
| |
| VG_(machine_get_VexArchInfo)( &vex_arch, &vex_archinfo ); |
| VG_(message)( |
| Vg_DebugMsg, |
| "Arch and hwcaps: %s, %s", |
| LibVEX_ppVexArch ( vex_arch ), |
| LibVEX_ppVexHwCaps ( vex_arch, vex_archinfo.hwcaps ) |
| ); |
| VG_(message)(Vg_DebugMsg, "Valgrind library directory: %s", VG_(libdir)); |
| } |
| } |
| |
| |
| /*====================================================================*/ |
| /*=== File descriptor setup ===*/ |
| /*====================================================================*/ |
| |
| /* Number of file descriptors that Valgrind tries to reserve for |
| it's own use - just a small constant. */ |
| #define N_RESERVED_FDS (10) |
| |
| static void setup_file_descriptors(void) |
| { |
| struct vki_rlimit rl; |
| |
| /* 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 + N_RESERVED_FDS <= rl.rlim_max) { |
| rl.rlim_cur = rl.rlim_cur + N_RESERVED_FDS; |
| } else { |
| rl.rlim_cur = rl.rlim_max; |
| } |
| |
| /* Reserve some file descriptors for our use. */ |
| VG_(fd_soft_limit) = rl.rlim_cur - N_RESERVED_FDS; |
| VG_(fd_hard_limit) = rl.rlim_cur - N_RESERVED_FDS; |
| |
| /* Update the soft limit. */ |
| VG_(setrlimit)(VKI_RLIMIT_NOFILE, &rl); |
| |
| if (VG_(cl_exec_fd) != -1) |
| VG_(cl_exec_fd) = VG_(safe_fd)( VG_(cl_exec_fd) ); |
| } |
| |
| |
| /*====================================================================*/ |
| /*=== Initialise the first thread. ===*/ |
| /*====================================================================*/ |
| |
| /* Given a pointer to the ThreadArchState for thread 1 (the root |
| thread), initialise the VEX guest state, and copy in essential |
| starting values. |
| */ |
| static void init_thread1state ( Addr client_ip, |
| Addr client_sp, |
| Addr client_toc, |
| /*inout*/ ThreadArchState* arch ) |
| { |
| #if defined(VGA_x86) |
| vg_assert(0 == sizeof(VexGuestX86State) % 8); |
| |
| /* Zero out the initial state, and set up the simulated FPU in a |
| sane way. */ |
| LibVEX_GuestX86_initialise(&arch->vex); |
| |
| /* Zero out the shadow area. */ |
| VG_(memset)(&arch->vex_shadow, 0, sizeof(VexGuestX86State)); |
| |
| /* Put essential stuff into the new state. */ |
| arch->vex.guest_ESP = client_sp; |
| arch->vex.guest_EIP = client_ip; |
| |
| /* initialise %cs, %ds and %ss to point at the operating systems |
| default code, data and stack segments */ |
| asm volatile("movw %%cs, %0" : : "m" (arch->vex.guest_CS)); |
| asm volatile("movw %%ds, %0" : : "m" (arch->vex.guest_DS)); |
| asm volatile("movw %%ss, %0" : : "m" (arch->vex.guest_SS)); |
| |
| #elif defined(VGA_amd64) |
| vg_assert(0 == sizeof(VexGuestAMD64State) % 8); |
| |
| /* Zero out the initial state, and set up the simulated FPU in a |
| sane way. */ |
| LibVEX_GuestAMD64_initialise(&arch->vex); |
| |
| /* Zero out the shadow area. */ |
| VG_(memset)(&arch->vex_shadow, 0, sizeof(VexGuestAMD64State)); |
| |
| /* Put essential stuff into the new state. */ |
| arch->vex.guest_RSP = client_sp; |
| arch->vex.guest_RIP = client_ip; |
| |
| #elif defined(VGA_ppc32) |
| vg_assert(0 == sizeof(VexGuestPPC32State) % 8); |
| |
| /* Zero out the initial state, and set up the simulated FPU in a |
| sane way. */ |
| LibVEX_GuestPPC32_initialise(&arch->vex); |
| |
| /* Zero out the shadow area. */ |
| VG_(memset)(&arch->vex_shadow, 0, sizeof(VexGuestPPC32State)); |
| |
| /* Put essential stuff into the new state. */ |
| arch->vex.guest_GPR1 = client_sp; |
| arch->vex.guest_CIA = client_ip; |
| |
| #elif defined(VGA_ppc64) |
| vg_assert(0 == sizeof(VexGuestPPC64State) % 16); |
| |
| /* Zero out the initial state, and set up the simulated FPU in a |
| sane way. */ |
| LibVEX_GuestPPC64_initialise(&arch->vex); |
| |
| /* Zero out the shadow area. */ |
| VG_(memset)(&arch->vex_shadow, 0, sizeof(VexGuestPPC64State)); |
| |
| /* Put essential stuff into the new state. */ |
| arch->vex.guest_GPR1 = client_sp; |
| arch->vex.guest_GPR2 = client_toc; |
| arch->vex.guest_CIA = client_ip; |
| #else |
| # error Unknown arch |
| #endif |
| // Tell the tool that we just wrote to the registers. |
| VG_TRACK( post_reg_write, Vg_CoreStartup, /*tid*/1, /*offset*/0, |
| sizeof(VexGuestArchState)); |
| } |
| |
| |
| /*====================================================================*/ |
| /*=== BB profiling ===*/ |
| /*====================================================================*/ |
| |
| static |
| void show_BB_profile ( BBProfEntry tops[], UInt n_tops, ULong score_total ) |
| { |
| ULong score_cumul, score_here; |
| Char buf_cumul[10], buf_here[10]; |
| Char name[64]; |
| Int r; |
| |
| VG_(printf)("\n"); |
| VG_(printf)("-----------------------------------------------------------\n"); |
| VG_(printf)("--- BEGIN BB Profile (summary of scores) ---\n"); |
| VG_(printf)("-----------------------------------------------------------\n"); |
| VG_(printf)("\n"); |
| |
| VG_(printf)("Total score = %lld\n\n", score_total); |
| |
| score_cumul = 0; |
| for (r = 0; r < n_tops; r++) { |
| if (tops[r].addr == 0) |
| continue; |
| name[0] = 0; |
| VG_(get_fnname_w_offset)(tops[r].addr, name, 64); |
| name[63] = 0; |
| score_here = tops[r].score; |
| score_cumul += score_here; |
| VG_(percentify)(score_cumul, score_total, 2, 6, buf_cumul); |
| VG_(percentify)(score_here, score_total, 2, 6, buf_here); |
| VG_(printf)("%3d: (%9lld %s) %9lld %s 0x%llx %s\n", |
| r, |
| score_cumul, buf_cumul, |
| score_here, buf_here, tops[r].addr, name ); |
| } |
| |
| VG_(printf)("\n"); |
| VG_(printf)("-----------------------------------------------------------\n"); |
| VG_(printf)("--- BB Profile (BB details) ---\n"); |
| VG_(printf)("-----------------------------------------------------------\n"); |
| VG_(printf)("\n"); |
| |
| score_cumul = 0; |
| for (r = 0; r < n_tops; r++) { |
| if (tops[r].addr == 0) |
| continue; |
| name[0] = 0; |
| VG_(get_fnname_w_offset)(tops[r].addr, name, 64); |
| name[63] = 0; |
| score_here = tops[r].score; |
| score_cumul += score_here; |
| VG_(percentify)(score_cumul, score_total, 2, 6, buf_cumul); |
| VG_(percentify)(score_here, score_total, 2, 6, buf_here); |
| VG_(printf)("\n"); |
| VG_(printf)("=-=-=-=-=-=-=-=-=-=-=-=-=-= begin BB rank %d " |
| "=-=-=-=-=-=-=-=-=-=-=-=-=-=\n\n", r); |
| VG_(printf)("%3d: (%9lld %s) %9lld %s 0x%llx %s\n", |
| r, |
| score_cumul, buf_cumul, |
| score_here, buf_here, tops[r].addr, name ); |
| VG_(printf)("\n"); |
| VG_(translate)(0, tops[r].addr, True, VG_(clo_profile_flags), 0, True); |
| VG_(printf)("=-=-=-=-=-=-=-=-=-=-=-=-=-= end BB rank %d " |
| "=-=-=-=-=-=-=-=-=-=-=-=-=-=\n\n", r); |
| } |
| |
| VG_(printf)("\n"); |
| VG_(printf)("-----------------------------------------------------------\n"); |
| VG_(printf)("--- END BB Profile ---\n"); |
| VG_(printf)("-----------------------------------------------------------\n"); |
| VG_(printf)("\n"); |
| } |
| |
| |
| /*====================================================================*/ |
| /*=== main() ===*/ |
| /*====================================================================*/ |
| |
| /* When main() is entered, we should be on the following stack, not |
| the one the kernel gave us. We will run on this stack until |
| simulation of the root thread is started, at which point a transfer |
| is made to a dynamically allocated stack. This is for the sake of |
| uniform overflow detection for all Valgrind threads. This is |
| marked global even though it isn't, because assembly code below |
| needs to reference the name. */ |
| |
| /*static*/ VgStack VG_(interim_stack); |
| |
| /* This should get some address inside the stack on which we gained |
| control (eg, it could be the SP at startup). It doesn't matter |
| exactly where in the stack it is. This value is passed to the |
| address space manager at startup, which uses it to identify the |
| initial stack segment and hence the upper end of the usable address |
| space. */ |
| |
| static Addr sp_at_startup = 0; |
| |
| /* --- Forwards decls to do with shutdown --- */ |
| |
| static void final_tidyup(ThreadId tid); |
| |
| /* Do everything which needs doing when the last thread exits */ |
| static |
| void shutdown_actions_NORETURN( ThreadId tid, |
| VgSchedReturnCode tids_schedretcode ); |
| |
| /* --- end of Forwards decls to do with shutdown --- */ |
| |
| |
| /* TODO: GIVE THIS A PROPER HOME |
| TODO: MERGE THIS WITH DUPLICATE IN mac_leakcheck.c |
| Extract from aspacem a vector of the current segment start |
| addresses. The vector is dynamically allocated and should be freed |
| by the caller when done. REQUIRES m_mallocfree to be running. |
| Writes the number of addresses required into *n_acquired. */ |
| |
| static Addr* get_seg_starts ( /*OUT*/Int* n_acquired ) |
| { |
| Addr* starts; |
| Int n_starts, r = 0; |
| |
| n_starts = 1; |
| while (True) { |
| starts = VG_(malloc)( n_starts * sizeof(Addr) ); |
| if (starts == NULL) |
| break; |
| r = VG_(am_get_segment_starts)( starts, n_starts ); |
| if (r >= 0) |
| break; |
| VG_(free)(starts); |
| n_starts *= 2; |
| } |
| |
| if (starts == NULL) { |
| *n_acquired = 0; |
| return NULL; |
| } |
| |
| *n_acquired = r; |
| return starts; |
| } |
| |
| |
| |
| Int main(Int argc, HChar **argv, HChar **envp) |
| { |
| HChar* toolname = "memcheck"; // default to Memcheck |
| HChar** env = NULL; |
| Int need_help = 0; // 0 = no, 1 = --help, 2 = --help-debug |
| Addr initial_client_IP = 0; |
| Addr initial_client_SP = 0; |
| Addr initial_client_TOC = 0; |
| Addr clstack_top = 0; |
| SizeT clstack_max_size = 0; |
| UInt* client_auxv; |
| Int loglevel, i; |
| Bool logging_to_fd; |
| struct vki_rlimit zero = { 0, 0 }; |
| ExeInfo info; |
| |
| //============================================================ |
| // |
| // Nb: startup is complex. Prerequisites are shown at every step. |
| // *** Be very careful when messing with the order *** |
| // |
| // The first order of business is to get debug logging, the address |
| // space manager and the dynamic memory manager up and running. |
| // Once that's done, we can relax a bit. |
| // |
| //============================================================ |
| |
| /* This is needed to make VG_(getenv) usable early. */ |
| VG_(client_envp) = (Char**)envp; |
| |
| //-------------------------------------------------------------- |
| // Start up the logging mechanism |
| // p: none |
| //-------------------------------------------------------------- |
| /* Start the debugging-log system ASAP. First find out how many |
| "-d"s were specified. This is a pre-scan of the command line. */ |
| loglevel = 0; |
| for (i = 1; i < argc; i++) { |
| if (argv[i][0] != '-') |
| break; |
| if (VG_STREQ(argv[i], "--")) |
| break; |
| if (VG_STREQ(argv[i], "-d")) |
| loglevel++; |
| } |
| |
| /* ... and start the debug logger. Now we can safely emit logging |
| messages all through startup. */ |
| VG_(debugLog_startup)(loglevel, "Stage 2 (main)"); |
| VG_(debugLog)(1, "main", "Welcome to Valgrind version " |
| VERSION " debug logging\n"); |
| |
| //-------------------------------------------------------------- |
| // Ensure we're on a plausible stack. |
| // p: logging |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Checking current stack is plausible\n"); |
| { HChar* limLo = (HChar*)(&VG_(interim_stack).bytes[0]); |
| HChar* limHi = limLo + sizeof(VG_(interim_stack)); |
| HChar* aLocal = (HChar*)&zero; /* any auto local will do */ |
| if (aLocal < limLo || aLocal >= limHi) { |
| /* something's wrong. Stop. */ |
| VG_(debugLog)(0, "main", "Root stack %p to %p, a local %p\n", |
| limLo, limHi, aLocal ); |
| VG_(debugLog)(0, "main", "Valgrind: FATAL: " |
| "Initial stack switched failed.\n"); |
| VG_(debugLog)(0, "main", " Cannot continue. Sorry.\n"); |
| VG_(exit)(1); |
| } |
| } |
| |
| //-------------------------------------------------------------- |
| // Ensure we have a plausible pointer to the stack on which |
| // we gained control (not the current stack!) |
| // p: logging |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Checking initial stack was noted\n"); |
| if (sp_at_startup == 0) { |
| VG_(debugLog)(0, "main", "Valgrind: FATAL: " |
| "Initial stack was not noted.\n"); |
| VG_(debugLog)(0, "main", " Cannot continue. Sorry.\n"); |
| VG_(exit)(1); |
| } |
| |
| //-------------------------------------------------------------- |
| // Start up the address space manager, and determine the |
| // approximate location of the client's stack |
| // p: logging, plausible-stack |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Starting the address space manager\n"); |
| clstack_top = VG_(am_startup)( sp_at_startup ); |
| VG_(debugLog)(1, "main", "Address space manager is running\n"); |
| |
| //-------------------------------------------------------------- |
| // Start up the dynamic memory manager |
| // p: address space management |
| // In fact m_mallocfree is self-initialising, so there's no |
| // initialisation call to do. Instead, try a simple malloc/ |
| // free pair right now to check that nothing is broken. |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Starting the dynamic memory manager\n"); |
| { void* p = VG_(malloc)( 12345 ); |
| if (p) VG_(free)( p ); |
| } |
| VG_(debugLog)(1, "main", "Dynamic memory manager is running\n"); |
| |
| //============================================================ |
| // |
| // Dynamic memory management is now available. |
| // |
| //============================================================ |
| |
| //-------------------------------------------------------------- |
| // Look for alternative libdir |
| { HChar *cp = VG_(getenv)(VALGRIND_LIB); |
| if (cp != NULL) |
| VG_(libdir) = cp; |
| } |
| |
| //-------------------------------------------------------------- |
| // Extract the launcher name from the environment. |
| VG_(debugLog)(1, "main", "Getting stage1's name\n"); |
| VG_(name_of_launcher) = VG_(getenv)(VALGRIND_LAUNCHER); |
| if (VG_(name_of_launcher) == NULL) { |
| VG_(printf)("valgrind: You cannot run '%s' directly.\n", argv[0]); |
| VG_(printf)("valgrind: You should use $prefix/bin/valgrind.\n"); |
| VG_(exit)(1); |
| } |
| |
| //-------------------------------------------------------------- |
| // Get the current process datasize rlimit, and set it to zero. |
| // This prevents any internal uses of brk() from having any effect. |
| // We remember the old value so we can restore it on exec, so that |
| // child processes will have a reasonable brk value. |
| VG_(getrlimit)(VKI_RLIMIT_DATA, &VG_(client_rlimit_data)); |
| zero.rlim_max = VG_(client_rlimit_data).rlim_max; |
| VG_(setrlimit)(VKI_RLIMIT_DATA, &zero); |
| |
| // Get the current process stack rlimit. |
| VG_(getrlimit)(VKI_RLIMIT_STACK, &VG_(client_rlimit_stack)); |
| |
| //-------------------------------------------------------------- |
| // Figure out what sort of CPU we're on, and whether it is |
| // able to run V. |
| VG_(debugLog)(1, "main", "Get hardware capabilities ...\n"); |
| { VexArch vex_arch; |
| VexArchInfo vex_archinfo; |
| Bool ok = VG_(machine_get_hwcaps)(); |
| if (!ok) { |
| VG_(printf)("\n"); |
| VG_(printf)("valgrind: fatal error: unsupported CPU.\n"); |
| VG_(printf)(" Supported CPUs are:\n"); |
| VG_(printf)(" * x86 (practically any; Pentium-I or above), " |
| "AMD Athlon or above)\n"); |
| VG_(printf)(" * AMD Athlon64/Opteron\n"); |
| VG_(printf)(" * PowerPC (most; ppc405 and above)\n"); |
| VG_(printf)("\n"); |
| VG_(exit)(1); |
| } |
| VG_(machine_get_VexArchInfo)( &vex_arch, &vex_archinfo ); |
| VG_(debugLog)( |
| 1, "main", "... arch = %s, hwcaps = %s\n", |
| LibVEX_ppVexArch ( vex_arch ), |
| LibVEX_ppVexHwCaps ( vex_arch, vex_archinfo.hwcaps ) |
| ); |
| } |
| |
| //============================================================ |
| // Command line argument handling order: |
| // * If --help/--help-debug are present, show usage message |
| // (including the tool-specific usage) |
| // * (If no --tool option given, default to Memcheck) |
| // * Then, if client is missing, abort with error msg |
| // * Then, if any cmdline args are bad, abort with error msg |
| //============================================================ |
| |
| //-------------------------------------------------------------- |
| // Split up argv into: C args, V args, V extra args, and exename. |
| // p: dynamic memory allocation |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Split up command line\n"); |
| VG_(split_up_argv)( argc, argv ); |
| if (0) { |
| for (i = 0; i < VG_(args_for_valgrind).used; i++) |
| VG_(printf)("varg %s\n", VG_(args_for_valgrind).strs[i]); |
| VG_(printf)(" exe %s\n", VG_(args_the_exename)); |
| for (i = 0; i < VG_(args_for_client).used; i++) |
| VG_(printf)("carg %s\n", VG_(args_for_client).strs[i]); |
| } |
| |
| //-------------------------------------------------------------- |
| // Extract tool name and whether help has been requested. |
| // Note we can't print the help message yet, even if requested, |
| // because the tool has not been initialised. |
| // p: split_up_argv [for VG_(args_for_valgrind)] |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Preprocess command line opts\n"); |
| get_helprequest_and_toolname(&need_help, &toolname); |
| |
| // Set default vex control params |
| LibVEX_default_VexControl(& VG_(clo_vex_control)); |
| |
| //-------------------------------------------------------------- |
| // Load client executable, finding in $PATH if necessary |
| // p: get_helprequest_and_toolname() [for 'exec', 'need_help'] |
| // p: layout_remaining_space [so there's space] |
| //-------------------------------------------------------------- |
| if (!need_help) { |
| VG_(debugLog)(1, "main", "Loading client\n"); |
| |
| if (VG_(args_the_exename) == NULL) |
| missing_prog(); |
| |
| load_client(&info, &initial_client_IP, &initial_client_TOC); |
| } |
| |
| //-------------------------------------------------------------- |
| // Set up client's environment |
| // p: set-libdir [for VG_(libdir)] |
| // p: get_helprequest_and_toolname [for toolname] |
| //-------------------------------------------------------------- |
| if (!need_help) { |
| VG_(debugLog)(1, "main", "Setup client env\n"); |
| env = setup_client_env(envp, toolname); |
| } |
| |
| //-------------------------------------------------------------- |
| // Setup client stack, eip, and VG_(client_arg[cv]) |
| // p: load_client() [for 'info'] |
| // p: fix_environment() [for 'env'] |
| //-------------------------------------------------------------- |
| if (!need_help) { |
| void* init_sp = argv - 1; |
| SizeT m1 = 1024 * 1024; |
| SizeT m16 = 16 * m1; |
| VG_(debugLog)(1, "main", "Setup client stack\n"); |
| clstack_max_size = (SizeT)VG_(client_rlimit_stack).rlim_cur; |
| if (clstack_max_size < m1) clstack_max_size = m1; |
| if (clstack_max_size > m16) clstack_max_size = m16; |
| clstack_max_size = VG_PGROUNDUP(clstack_max_size); |
| |
| initial_client_SP |
| = setup_client_stack( init_sp, env, |
| &info, &client_auxv, |
| clstack_top, clstack_max_size ); |
| |
| VG_(free)(env); |
| |
| VG_(debugLog)(2, "main", |
| "Client info: " |
| "initial_IP=%p initial_SP=%p initial_TOC=%p brk_base=%p\n", |
| (void*)initial_client_IP, |
| (void*)initial_client_SP, |
| (void*)initial_client_TOC, |
| (void*)VG_(brk_base) ); |
| } |
| |
| //-------------------------------------------------------------- |
| // Setup client data (brk) segment. Initially a 1-page segment |
| // which abuts a shrinkable reservation. |
| // p: load_client() [for 'info' and hence VG_(brk_base)] |
| //-------------------------------------------------------------- |
| if (!need_help) { |
| SizeT m1 = 1024 * 1024; |
| SizeT m8 = 8 * m1; |
| SizeT dseg_max_size = (SizeT)VG_(client_rlimit_data).rlim_cur; |
| VG_(debugLog)(1, "main", "Setup client data (brk) segment\n"); |
| if (dseg_max_size < m1) dseg_max_size = m1; |
| if (dseg_max_size > m8) dseg_max_size = m8; |
| dseg_max_size = VG_PGROUNDUP(dseg_max_size); |
| |
| setup_client_dataseg( dseg_max_size ); |
| } |
| |
| //============================================================== |
| // |
| // Finished loading/setting up the client address space. |
| // |
| //============================================================== |
| |
| //-------------------------------------------------------------- |
| // setup file descriptors |
| // p: n/a |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Setup file descriptors\n"); |
| setup_file_descriptors(); |
| |
| //-------------------------------------------------------------- |
| // create the fake /proc/<pid>/cmdline file and then unlink it, |
| // but hold onto the fd, so we can hand it out to the client |
| // when it tries to open /proc/<pid>/cmdline for itself. |
| // p: setup file descriptors |
| //-------------------------------------------------------------- |
| if (!need_help) { |
| HChar buf[50], buf2[50+64]; |
| HChar nul[1]; |
| Int fd, r; |
| HChar* exename; |
| |
| VG_(debugLog)(1, "main", "Create fake /proc/<pid>/cmdline\n"); |
| |
| VG_(sprintf)(buf, "proc_%d_cmdline", VG_(getpid)()); |
| fd = VG_(mkstemp)( buf, buf2 ); |
| if (fd == -1) |
| config_error("Can't create client cmdline file in /tmp."); |
| |
| nul[0] = 0; |
| exename = VG_(args_the_exename) ? VG_(args_the_exename) |
| : "unknown_exename"; |
| |
| VG_(write)(fd, VG_(args_the_exename), |
| VG_(strlen)( VG_(args_the_exename) )); |
| VG_(write)(fd, nul, 1); |
| |
| for (i = 0; i < VG_(args_for_client).used; i++) { |
| VG_(write)(fd, VG_(args_for_client).strs[i], |
| VG_(strlen)( VG_(args_for_client).strs[i] )); |
| VG_(write)(fd, nul, 1); |
| } |
| |
| /* Don't bother to seek the file back to the start; instead do |
| it every time a copy of it is given out (by PRE(sys_open)). |
| That is probably more robust across fork() etc. */ |
| |
| /* Now delete it, but hang on to the fd. */ |
| r = VG_(unlink)( buf2 ); |
| if (r) |
| config_error("Can't delete client cmdline file in /tmp."); |
| |
| VG_(cl_cmdline_fd) = fd; |
| } |
| |
| //-------------------------------------------------------------- |
| // Init tool part 1: pre_clo_init |
| // p: setup_client_stack() [for 'VG_(client_arg[cv]'] |
| // p: setup_file_descriptors() [for 'VG_(fd_xxx_limit)'] |
| //-------------------------------------------------------------- |
| { |
| Char* s; |
| Bool ok; |
| VG_(debugLog)(1, "main", "Initialise the tool part 1 (pre_clo_init)\n"); |
| (VG_(tool_info).tl_pre_clo_init)(); |
| ok = VG_(sanity_check_needs)( &s ); |
| if (!ok) { |
| VG_(tool_panic)(s); |
| } |
| } |
| |
| //-------------------------------------------------------------- |
| // If --tool and --help/--help-debug was given, now give the core+tool |
| // help message |
| // p: get_helprequest_and_toolname() [for 'need_help'] |
| // p: tl_pre_clo_init [for 'VG_(tdict).usage'] |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Print help and quit, if requested\n"); |
| if (need_help) { |
| usage_NORETURN(/*--help-debug?*/2 == need_help); |
| } |
| |
| //-------------------------------------------------------------- |
| // Process command line options to Valgrind + tool |
| // p: setup_client_stack() [for 'VG_(client_arg[cv]'] |
| // p: setup_file_descriptors() [for 'VG_(fd_xxx_limit)'] |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Process Valgrind's command line options, " |
| "setup logging\n"); |
| logging_to_fd = process_cmd_line_options(client_auxv, toolname); |
| |
| //-------------------------------------------------------------- |
| // Zeroise the millisecond counter by doing a first read of it. |
| // p: none |
| //-------------------------------------------------------------- |
| (void) VG_(read_millisecond_timer)(); |
| |
| //-------------------------------------------------------------- |
| // Print the preamble |
| // p: tl_pre_clo_init [for 'VG_(details).name' and friends] |
| // p: process_cmd_line_options() [for VG_(clo_verbosity), VG_(clo_xml), |
| // VG_(clo_log_file_qualifier), |
| // logging_to_fd] |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Print the preamble...\n"); |
| print_preamble(logging_to_fd, toolname); |
| VG_(debugLog)(1, "main", "...finished the preamble\n"); |
| |
| //-------------------------------------------------------------- |
| // Init tool part 2: post_clo_init |
| // p: setup_client_stack() [for 'VG_(client_arg[cv]'] |
| // p: setup_file_descriptors() [for 'VG_(fd_xxx_limit)'] |
| // p: print_preamble() [so any warnings printed in post_clo_init |
| // are shown after the preamble] |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Initialise the tool part 2 (post_clo_init)\n"); |
| VG_TDICT_CALL(tool_post_clo_init); |
| |
| //-------------------------------------------------------------- |
| // Initialise translation table and translation cache |
| // p: aspacem [??] |
| // p: tl_pre_clo_init [for 'VG_(details).avg_translation_sizeB'] |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Initialise TT/TC\n"); |
| VG_(init_tt_tc)(); |
| |
| //-------------------------------------------------------------- |
| // Initialise the redirect table. |
| // p: init_tt_tc [so it can call VG_(search_transtab) safely] |
| // p: aspacem [so can change ownership of sysinfo pages] |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Initialise redirects\n"); |
| VG_(redir_initialise)(); |
| |
| //-------------------------------------------------------------- |
| // Allow GDB attach |
| // p: process_cmd_line_options() [for VG_(clo_wait_for_gdb)] |
| //-------------------------------------------------------------- |
| /* Hook to delay things long enough so we can get the pid and |
| attach GDB in another shell. */ |
| if (VG_(clo_wait_for_gdb)) { |
| Long q, iters; |
| VG_(debugLog)(1, "main", "Wait for GDB\n"); |
| VG_(printf)("pid=%d, entering delay loop\n", VG_(getpid)()); |
| /* jrs 20050206: I don't understand why this works on x86. On |
| amd64 the obvious analogues (jump *$rip or jump *$rcx) don't |
| work. */ |
| /* do "jump *$eip" to skip this in gdb (x86) */ |
| //VG_(do_syscall0)(__NR_pause); |
| |
| # if defined(VGP_x86_linux) |
| iters = 5; |
| # elif defined(VGP_amd64_linux) || defined(VGP_ppc64_linux) |
| iters = 10; |
| # elif defined(VGP_ppc32_linux) |
| iters = 5; |
| # else |
| # error "Unknown plat" |
| # endif |
| |
| iters *= 1000*1000*1000; |
| for (q = 0; q < iters; q++) |
| ; |
| } |
| |
| //-------------------------------------------------------------- |
| // Search for file descriptors that are inherited from our parent |
| // p: process_cmd_line_options [for VG_(clo_track_fds)] |
| //-------------------------------------------------------------- |
| if (VG_(clo_track_fds)) { |
| VG_(debugLog)(1, "main", "Init preopened fds\n"); |
| VG_(init_preopened_fds)(); |
| } |
| |
| //-------------------------------------------------------------- |
| // Load debug info for the existing segments. |
| // p: setup_code_redirect_table [so that redirs can be recorded] |
| // p: mallocfree |
| // p: probably: setup fds and process CLOs, so that logging works |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Load initial debug info\n"); |
| { Addr* seg_starts; |
| Int n_seg_starts; |
| |
| seg_starts = get_seg_starts( &n_seg_starts ); |
| vg_assert(seg_starts && n_seg_starts > 0); |
| |
| /* show them all to the debug info reader. allow_SkFileV has to |
| be True here so that we read info from the valgrind executable |
| itself. */ |
| for (i = 0; i < n_seg_starts; i++) |
| VG_(di_notify_mmap)( seg_starts[i], True/*allow_SkFileV*/ ); |
| |
| VG_(free)( seg_starts ); |
| } |
| |
| //-------------------------------------------------------------- |
| // Tell aspacem of ownership change of the asm helpers, so that |
| // m_translate allows them to be translated. However, only do this |
| // after the initial debug info read, since making a hole in the |
| // address range for the stage2 binary confuses the debug info reader. |
| // p: aspacem |
| //-------------------------------------------------------------- |
| { Bool change_ownership_v_c_OK; |
| Addr co_start = VG_PGROUNDDN( (Addr)&VG_(trampoline_stuff_start) ); |
| Addr co_endPlus = VG_PGROUNDUP( (Addr)&VG_(trampoline_stuff_end) ); |
| VG_(debugLog)(1,"redir", |
| "transfer ownership V -> C of 0x%llx .. 0x%llx\n", |
| (ULong)co_start, (ULong)co_endPlus-1 ); |
| |
| change_ownership_v_c_OK |
| = VG_(am_change_ownership_v_to_c)( co_start, co_endPlus - co_start ); |
| vg_assert(change_ownership_v_c_OK); |
| } |
| |
| //-------------------------------------------------------------- |
| // Tell the tool about the initial client memory permissions |
| // p: aspacem |
| // p: mallocfree |
| // p: setup_client_stack |
| // p: setup_client_dataseg |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Tell tool about initial permissions\n"); |
| { Addr* seg_starts; |
| Int n_seg_starts; |
| NSegment* seg; |
| |
| seg_starts = get_seg_starts( &n_seg_starts ); |
| vg_assert(seg_starts && n_seg_starts > 0); |
| |
| /* show interesting ones to the tool */ |
| for (i = 0; i < n_seg_starts; i++) { |
| seg = VG_(am_find_nsegment)( seg_starts[i] ); |
| vg_assert(seg); |
| if (seg->kind == SkFileC || seg->kind == SkAnonC) { |
| VG_(debugLog)(2, "main", |
| "tell tool about %010lx-%010lx %c%c%c\n", |
| seg->start, seg->end, |
| seg->hasR ? 'r' : '-', |
| seg->hasW ? 'w' : '-', |
| seg->hasX ? 'x' : '-' ); |
| VG_TRACK( new_mem_startup, seg->start, seg->end+1-seg->start, |
| seg->hasR, seg->hasW, seg->hasX ); |
| } |
| } |
| |
| VG_(free)( seg_starts ); |
| |
| /* Also do the initial stack permissions. */ |
| seg = VG_(am_find_nsegment)( initial_client_SP ); |
| vg_assert(seg); |
| vg_assert(seg->kind == SkAnonC); |
| vg_assert(initial_client_SP >= seg->start); |
| vg_assert(initial_client_SP <= seg->end); |
| |
| /* Stuff below the initial SP is unaddressable. */ |
| /* NB: shouldn't this take into account the VG_STACK_REDZONE_SZB |
| bytes below SP? */ |
| VG_TRACK( die_mem_stack, seg->start, initial_client_SP - seg->start ); |
| VG_(debugLog)(2, "main", "mark stack inaccessible %010lx-%010lx\n", |
| seg->start, initial_client_SP-1 ); |
| |
| /* Also the assembly helpers. */ |
| VG_TRACK( new_mem_startup, |
| (Addr)&VG_(trampoline_stuff_start), |
| (Addr)&VG_(trampoline_stuff_end) - (Addr)&VG_(trampoline_stuff_start), |
| False, /* readable? */ |
| False, /* writable? */ |
| True /* executable? */ ); |
| } |
| |
| //-------------------------------------------------------------- |
| // Initialise the scheduler |
| // p: setup_file_descriptors() [else VG_(safe_fd)() breaks] |
| // p: setup_client_stack |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Initialise scheduler\n"); |
| { NSegment* seg = VG_(am_find_nsegment)( initial_client_SP ); |
| vg_assert(seg); |
| vg_assert(seg->kind == SkAnonC); |
| vg_assert(initial_client_SP >= seg->start); |
| vg_assert(initial_client_SP <= seg->end); |
| VG_(scheduler_init)( seg->end, clstack_max_size ); |
| } |
| |
| //-------------------------------------------------------------- |
| // Initialise the pthread model |
| // p: ? |
| // load_client() [for 'client_eip'] |
| // setup_client_stack() [for 'sp_at_startup'] |
| // setup_scheduler() [for the rest of state 1 stuff] |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "Initialise thread 1's state\n"); |
| init_thread1state( initial_client_IP, |
| initial_client_SP, |
| initial_client_TOC, |
| &VG_(threads)[1].arch); |
| |
| //-------------------------------------------------------------- |
| // Initialise the pthread model |
| // p: ? |
| //-------------------------------------------------------------- |
| //if (VG_(clo_model_pthreads)) |
| // VG_(pthread_init)(); |
| |
| //-------------------------------------------------------------- |
| // Initialise the signal handling subsystem |
| // p: n/a |
| //-------------------------------------------------------------- |
| // Nb: temporarily parks the saved blocking-mask in saved_sigmask. |
| VG_(debugLog)(1, "main", "Initialise signal management\n"); |
| VG_(sigstartup_actions)(); |
| |
| //-------------------------------------------------------------- |
| // Read suppression file |
| // p: process_cmd_line_options() [for VG_(clo_suppressions)] |
| //-------------------------------------------------------------- |
| if (VG_(needs).core_errors || VG_(needs).tool_errors) { |
| VG_(debugLog)(1, "main", "Load suppressions\n"); |
| VG_(load_suppressions)(); |
| } |
| |
| //-------------------------------------------------------------- |
| // register client stack |
| //-------------------------------------------------------------- |
| VG_(clstk_id) = VG_(register_stack)(VG_(clstk_base), VG_(clstk_end)); |
| |
| //-------------------------------------------------------------- |
| // Show the address space state so far |
| //-------------------------------------------------------------- |
| VG_(debugLog)(1, "main", "\n"); |
| VG_(debugLog)(1, "main", "\n"); |
| VG_(am_show_nsegments)(1,"Memory layout at client startup"); |
| VG_(debugLog)(1, "main", "\n"); |
| VG_(debugLog)(1, "main", "\n"); |
| |
| //-------------------------------------------------------------- |
| // Run! |
| //-------------------------------------------------------------- |
| if (VG_(clo_xml)) { |
| HChar buf[50]; |
| VG_(elapsed_wallclock_time)(buf); |
| VG_(message)(Vg_UserMsg, "<status>\n" |
| " <state>RUNNING</state>\n" |
| " <time>%t</time>\n" |
| "</status>", |
| buf); |
| VG_(message)(Vg_UserMsg, ""); |
| } |
| |
| VG_(debugLog)(1, "main", "Running thread 1\n"); |
| |
| /* As a result of the following call, the last thread standing |
| eventually winds up running shutdown_actions_NORETURN |
| just below. Unfortunately, simply exporting said function |
| causes m_main to be part of a module cycle, which is pretty |
| nonsensical. So instead of doing that, the address of said |
| function is stored in a global variable 'owned' by m_syswrap, |
| and it uses that function pointer to get back here when it needs |
| to. */ |
| |
| /* Set continuation address. */ |
| VG_(address_of_m_main_shutdown_actions_NORETURN) |
| = & shutdown_actions_NORETURN; |
| |
| /* Run the first thread, eventually ending up at the continuation |
| address. */ |
| VG_(main_thread_wrapper_NORETURN)(1); |
| |
| /*NOTREACHED*/ |
| vg_assert(0); |
| } |
| |
| /* Do everything which needs doing when the last thread exits. */ |
| |
| static |
| void shutdown_actions_NORETURN( ThreadId tid, |
| VgSchedReturnCode tids_schedretcode ) |
| { |
| VG_(debugLog)(1, "main", "entering VG_(shutdown_actions_NORETURN)\n"); |
| |
| vg_assert( VG_(count_living_threads)() == 1 ); |
| vg_assert(VG_(is_running_thread)(tid)); |
| |
| // Wait for all other threads to exit. |
| VG_(reap_threads)(tid); |
| |
| VG_(clo_model_pthreads) = False; |
| |
| // Clean the client up before the final report |
| final_tidyup(tid); |
| |
| // OK, done |
| VG_(exit_thread)(tid); |
| |
| /* should be no threads left */ |
| vg_assert(VG_(count_living_threads)() == 0); |
| |
| VG_(threads)[tid].status = VgTs_Empty; |
| //-------------------------------------------------------------- |
| // Finalisation: cleanup, messages, etc. Order no so important, only |
| // affects what order the messages come. |
| //-------------------------------------------------------------- |
| if (VG_(clo_verbosity) > 0) |
| VG_(message)(Vg_UserMsg, ""); |
| |
| if (VG_(clo_xml)) { |
| HChar buf[50]; |
| if (VG_(needs).core_errors || VG_(needs).tool_errors) { |
| VG_(show_error_counts_as_XML)(); |
| VG_(message)(Vg_UserMsg, ""); |
| } |
| VG_(elapsed_wallclock_time)(buf); |
| VG_(message)(Vg_UserMsg, "<status>\n" |
| " <state>FINISHED</state>\n" |
| " <time>%t</time>\n" |
| "</status>", |
| buf); |
| VG_(message)(Vg_UserMsg, ""); |
| } |
| |
| /* Print out file descriptor summary and stats. */ |
| if (VG_(clo_track_fds)) |
| VG_(show_open_fds)(); |
| |
| if (VG_(needs).core_errors || VG_(needs).tool_errors) |
| VG_(show_all_errors)(); |
| |
| VG_TDICT_CALL(tool_fini, 0/*exitcode*/); |
| |
| if (VG_(clo_xml)) { |
| VG_(message)(Vg_UserMsg, ""); |
| VG_(message)(Vg_UserMsg, "</valgrindoutput>"); |
| VG_(message)(Vg_UserMsg, ""); |
| } |
| |
| VG_(sanity_check_general)( True /*include expensive checks*/ ); |
| |
| if (VG_(clo_verbosity) > 1) |
| print_all_stats(); |
| |
| if (VG_(clo_profile_flags) > 0) { |
| #define N_MAX 100 |
| BBProfEntry tops[N_MAX]; |
| ULong score_total = VG_(get_BB_profile) (tops, N_MAX); |
| show_BB_profile(tops, N_MAX, score_total); |
| } |
| |
| /* Print Vex storage stats */ |
| if (0) |
| LibVEX_ShowAllocStats(); |
| |
| /* Ok, finally exit in the os-specific way, according to the scheduler's |
| return code. In short, if the (last) thread exited by calling |
| sys_exit, do likewise; if the (last) thread stopped due to a fatal |
| signal, terminate the entire system with that same fatal signal. */ |
| VG_(debugLog)(1, "core_os", |
| "VG_(terminate_NORETURN)(tid=%lld)\n", (ULong)tid); |
| |
| vg_assert(VG_(count_living_threads)() == 0); |
| |
| switch (tids_schedretcode) { |
| case VgSrc_ExitSyscall: /* the normal way out */ |
| VG_(exit)( VG_(threads)[tid].os_state.exitcode ); |
| /* NOT ALIVE HERE! */ |
| VG_(core_panic)("entered the afterlife in main() -- ExitSyscall"); |
| break; /* what the hell :) */ |
| |
| case VgSrc_FatalSig: |
| /* We were killed by a fatal signal, so replicate the effect */ |
| vg_assert(VG_(threads)[tid].os_state.fatalsig != 0); |
| VG_(kill_self)(VG_(threads)[tid].os_state.fatalsig); |
| VG_(core_panic)("main(): signal was supposed to be fatal"); |
| break; |
| |
| default: |
| VG_(core_panic)("main(): unexpected scheduler return code"); |
| } |
| } |
| |
| /* -------------------- */ |
| |
| /* Final clean-up before terminating the process. |
| Clean up the client by calling __libc_freeres() (if requested) |
| This is Linux-specific? |
| */ |
| static void final_tidyup(ThreadId tid) |
| { |
| # if defined(VGP_ppc64_linux) |
| Addr r2; |
| # endif |
| Addr __libc_freeres_wrapper = VG_(client___libc_freeres_wrapper); |
| |
| vg_assert(VG_(is_running_thread)(tid)); |
| |
| if ( !VG_(needs).libc_freeres || |
| !VG_(clo_run_libc_freeres) || |
| 0 == __libc_freeres_wrapper ) |
| return; /* can't/won't do it */ |
| |
| # if defined(VGP_ppc64_linux) |
| r2 = VG_(get_tocptr)( __libc_freeres_wrapper ); |
| if (r2 == 0) { |
| VG_(message)(Vg_UserMsg, |
| "Caught __NR_exit, but can't run __libc_freeres()"); |
| VG_(message)(Vg_UserMsg, |
| " since cannot establish TOC pointer for it."); |
| return; |
| } |
| # endif |
| |
| if (VG_(clo_verbosity) > 2 || |
| VG_(clo_trace_syscalls) || |
| VG_(clo_trace_sched)) |
| VG_(message)(Vg_DebugMsg, |
| "Caught __NR_exit; running __libc_freeres()"); |
| |
| /* set thread context to point to libc_freeres_wrapper */ |
| /* ppc64-linux note: __libc_freeres_wrapper gives us the real |
| function entry point, not a fn descriptor, so can use it |
| directly. However, we need to set R2 (the toc pointer) |
| appropriately. */ |
| VG_(set_IP)(tid, __libc_freeres_wrapper); |
| # if defined(VGP_ppc64_linux) |
| VG_(threads)[tid].arch.vex.guest_GPR2 = r2; |
| # endif |
| |
| /* Block all blockable signals by copying the real block state into |
| the thread's block state*/ |
| VG_(sigprocmask)(VKI_SIG_BLOCK, NULL, &VG_(threads)[tid].sig_mask); |
| VG_(threads)[tid].tmp_sig_mask = VG_(threads)[tid].sig_mask; |
| |
| /* and restore handlers to default */ |
| VG_(set_default_handler)(VKI_SIGSEGV); |
| VG_(set_default_handler)(VKI_SIGBUS); |
| VG_(set_default_handler)(VKI_SIGILL); |
| VG_(set_default_handler)(VKI_SIGFPE); |
| |
| // We were exiting, so assert that... |
| vg_assert(VG_(is_exiting)(tid)); |
| // ...but now we're not again |
| VG_(threads)[tid].exitreason = VgSrc_None; |
| |
| // run until client thread exits - ideally with LIBC_FREERES_DONE, |
| // but exit/exitgroup/signal will do |
| VG_(scheduler)(tid); |
| |
| vg_assert(VG_(is_exiting)(tid)); |
| } |
| |
| |
| /*====================================================================*/ |
| /*=== Getting to main() alive ===*/ |
| /*====================================================================*/ |
| |
| /* If linking of the final executables is done with glibc present, |
| then Valgrind starts at main() above as usual, and all of the |
| following code is irrelevant. |
| |
| However, this is not the intended mode of use. The plan is to |
| avoid linking against glibc, by giving gcc the flags |
| -nodefaultlibs -lgcc -nostartfiles at startup. |
| |
| From this derive two requirements: |
| |
| 1. gcc may emit calls to memcpy and memset to deal with structure |
| assignments etc. Since we have chosen to ignore all the |
| "normal" supporting libraries, we have to provide our own |
| implementations of them. No problem. |
| |
| 2. We have to provide a symbol "_start", to which the kernel |
| hands control at startup. Hence the code below. |
| */ |
| |
| /* ---------------- Requirement 1 ---------------- */ |
| |
| void* memcpy(void *dest, const void *src, size_t n); |
| void* memcpy(void *dest, const void *src, size_t n) { |
| return VG_(memcpy)(dest,src,n); |
| } |
| void* memset(void *s, int c, size_t n); |
| void* memset(void *s, int c, size_t n) { |
| return VG_(memset)(s,c,n); |
| } |
| |
| /* ---------------- Requirement 2 ---------------- */ |
| |
| /* Glibc's sysdeps/i386/elf/start.S has the following gem of a |
| comment, which explains how the stack looks right at process start |
| (when _start is jumped to). Hence _start passes %esp to |
| _start_in_C, which extracts argc/argv/envp and starts up |
| correctly. */ |
| |
| /* This is the canonical entry point, usually the first thing in the text |
| segment. The SVR4/i386 ABI (pages 3-31, 3-32) says that when the entry |
| point runs, most registers' values are unspecified, except for: |
| |
| %edx Contains a function pointer to be registered with `atexit'. |
| This is how the dynamic linker arranges to have DT_FINI |
| functions called for shared libraries that have been loaded |
| before this code runs. |
| |
| %esp The stack contains the arguments and environment: |
| 0(%esp) argc |
| 4(%esp) argv[0] |
| ... |
| (4*argc)(%esp) NULL |
| (4*(argc+1))(%esp) envp[0] |
| ... |
| NULL |
| */ |
| |
| /* The kernel hands control to _start, which extracts the initial |
| stack pointer and calls onwards to _start_in_C. This also switches |
| the new stack. */ |
| #if defined(VGP_x86_linux) |
| asm("\n" |
| ".text\n" |
| "\t.globl _start\n" |
| "\t.type _start,@function\n" |
| "_start:\n" |
| /* set up the new stack in %eax */ |
| "\tmovl $vgPlain_interim_stack, %eax\n" |
| "\taddl $"VG_STRINGIFY(VG_STACK_GUARD_SZB)", %eax\n" |
| "\taddl $"VG_STRINGIFY(VG_STACK_ACTIVE_SZB)", %eax\n" |
| "\tsubl $16, %eax\n" |
| "\tandl $~15, %eax\n" |
| /* install it, and collect the original one */ |
| "\txchgl %eax, %esp\n" |
| /* call _start_in_C, passing it the startup %esp */ |
| "\tpushl %eax\n" |
| "\tcall _start_in_C\n" |
| "\thlt\n" |
| ".previous\n" |
| ); |
| #elif defined(VGP_amd64_linux) |
| asm("\n" |
| ".text\n" |
| "\t.globl _start\n" |
| "\t.type _start,@function\n" |
| "_start:\n" |
| /* set up the new stack in %rdi */ |
| "\tmovq $vgPlain_interim_stack, %rdi\n" |
| "\taddq $"VG_STRINGIFY(VG_STACK_GUARD_SZB)", %rdi\n" |
| "\taddq $"VG_STRINGIFY(VG_STACK_ACTIVE_SZB)", %rdi\n" |
| "\tandq $~15, %rdi\n" |
| /* install it, and collect the original one */ |
| "\txchgq %rdi, %rsp\n" |
| /* call _start_in_C, passing it the startup %rsp */ |
| "\tcall _start_in_C\n" |
| "\thlt\n" |
| ".previous\n" |
| ); |
| #elif defined(VGP_ppc32_linux) |
| asm("\n" |
| ".text\n" |
| "\t.globl _start\n" |
| "\t.type _start,@function\n" |
| "_start:\n" |
| /* set up the new stack in r16 */ |
| "\tlis 16,vgPlain_interim_stack@ha\n" |
| "\tla 16,vgPlain_interim_stack@l(16)\n" |
| "\tlis 17,("VG_STRINGIFY(VG_STACK_GUARD_SZB)" >> 16)\n" |
| "\tori 17,17,("VG_STRINGIFY(VG_STACK_GUARD_SZB)" & 0xFFFF)\n" |
| "\tlis 18,("VG_STRINGIFY(VG_STACK_ACTIVE_SZB)" >> 16)\n" |
| "\tori 18,18,("VG_STRINGIFY(VG_STACK_ACTIVE_SZB)" & 0xFFFF)\n" |
| "\tadd 16,17,16\n" |
| "\tadd 16,18,16\n" |
| "\trlwinm 16,16,0,0,27\n" |
| /* now r16 = &vgPlain_interim_stack + VG_STACK_GUARD_SZB + |
| VG_STACK_ACTIVE_SZB rounded down to the nearest 16-byte |
| boundary. And r1 is the original SP. Set the SP to r16 and |
| call _start_in_C, passing it the initial SP. */ |
| "\tmr 3,1\n" |
| "\tmr 1,16\n" |
| "\tbl _start_in_C\n" |
| "\ttrap\n" |
| ".previous\n" |
| ); |
| #elif defined(VGP_ppc64_linux) |
| asm("\n" |
| /* PPC64 ELF ABI says '_start' points to a function descriptor. |
| So we must have one, and that is what goes into the .opd section. */ |
| "\t.align 2\n" |
| "\t.global _start\n" |
| "\t.section \".opd\",\"aw\"\n" |
| "\t.align 3\n" |
| "_start:\n" |
| "\t.quad ._start,.TOC.@tocbase,0\n" |
| "\t.previous\n" |
| "\t.type ._start,@function\n" |
| "\t.global ._start\n" |
| "._start:\n" |
| /* set up the new stack in r16 */ |
| "\tlis 16, vgPlain_interim_stack@highest\n" |
| "\tori 16,16,vgPlain_interim_stack@higher\n" |
| "\tsldi 16,16,32\n" |
| "\toris 16,16,vgPlain_interim_stack@h\n" |
| "\tori 16,16,vgPlain_interim_stack@l\n" |
| "\txor 17,17,17\n" |
| "\tlis 17,("VG_STRINGIFY(VG_STACK_GUARD_SZB)" >> 16)\n" |
| "\tori 17,17,("VG_STRINGIFY(VG_STACK_GUARD_SZB)" & 0xFFFF)\n" |
| "\txor 18,18,18\n" |
| "\tlis 18,("VG_STRINGIFY(VG_STACK_ACTIVE_SZB)" >> 16)\n" |
| "\tori 18,18,("VG_STRINGIFY(VG_STACK_ACTIVE_SZB)" & 0xFFFF)\n" |
| "\tadd 16,17,16\n" |
| "\tadd 16,18,16\n" |
| "\trldicr 16,16,0,59\n" |
| /* now r16 = &vgPlain_interim_stack + VG_STACK_GUARD_SZB + |
| VG_STACK_ACTIVE_SZB rounded down to the nearest 16-byte |
| boundary. And r1 is the original SP. Set the SP to r16 and |
| call _start_in_C, passing it the initial SP. */ |
| "\tmr 3,1\n" |
| "\tmr 1,16\n" |
| "\tbl ._start_in_C\n" |
| "\tnop\n" |
| "\ttrap\n" |
| ); |
| #else |
| #error "_start: needs implementation on this platform" |
| #endif |
| |
| /* Avoid compiler warnings: this fn _is_ used, but labelling it |
| 'static' causes gcc to complain it isn't. */ |
| void _start_in_C ( UWord* pArgc ); |
| void _start_in_C ( UWord* pArgc ) |
| { |
| Int r; |
| Word argc = pArgc[0]; |
| HChar** argv = (HChar**)&pArgc[1]; |
| HChar** envp = (HChar**)&pArgc[1+argc+1]; |
| sp_at_startup = (Addr)pArgc; |
| r = main( (Int)argc, argv, envp ); |
| VG_(exit)(r); |
| } |
| |
| /*--------------------------------------------------------------------*/ |
| /*--- end ---*/ |
| /*--------------------------------------------------------------------*/ |