diff options
Diffstat (limited to 'lldb/examples/lookup/main.cpp')
| -rw-r--r-- | lldb/examples/lookup/main.cpp | 343 |
1 files changed, 165 insertions, 178 deletions
diff --git a/lldb/examples/lookup/main.cpp b/lldb/examples/lookup/main.cpp index fbb9084..f2a3386 100644 --- a/lldb/examples/lookup/main.cpp +++ b/lldb/examples/lookup/main.cpp @@ -19,11 +19,11 @@ #include "LLDB/SBDebugger.h" #include "LLDB/SBFunction.h" #include "LLDB/SBModule.h" +#include "LLDB/SBProcess.h" #include "LLDB/SBStream.h" #include "LLDB/SBSymbol.h" #include "LLDB/SBTarget.h" #include "LLDB/SBThread.h" -#include "LLDB/SBProcess.h" #endif #include <string> @@ -34,8 +34,8 @@ using namespace lldb; // This quick sample code shows how to create a debugger instance and // create an "i386" executable target. Then we can lookup the executable // module and resolve a file address into a section offset address, -// and find all symbol context objects (if any) for that address: -// compile unit, function, deepest block, line table entry and the +// and find all symbol context objects (if any) for that address: +// compile unit, function, deepest block, line table entry and the // symbol. // // To build the program, type (while in this directory): @@ -44,192 +44,179 @@ using namespace lldb; // // then (for example): // -// $ DYLD_FRAMEWORK_PATH=/Volumes/data/lldb/svn/ToT/build/Debug ./a.out executable_path file_address +// $ DYLD_FRAMEWORK_PATH=/Volumes/data/lldb/svn/ToT/build/Debug ./a.out +// executable_path file_address //---------------------------------------------------------------------- -class LLDBSentry -{ +class LLDBSentry { public: - LLDBSentry() { - // Initialize LLDB - SBDebugger::Initialize(); - } - ~LLDBSentry() { - // Terminate LLDB - SBDebugger::Terminate(); - } + LLDBSentry() { + // Initialize LLDB + SBDebugger::Initialize(); + } + ~LLDBSentry() { + // Terminate LLDB + SBDebugger::Terminate(); + } }; -static struct option g_long_options[] = -{ - { "help", no_argument, NULL, 'h' }, - { "verbose", no_argument, NULL, 'v' }, - { "arch", required_argument, NULL, 'a' }, - { "platform", required_argument, NULL, 'p' }, - { NULL, 0, NULL, 0 } -}; +static struct option g_long_options[] = { + {"help", no_argument, NULL, 'h'}, + {"verbose", no_argument, NULL, 'v'}, + {"arch", required_argument, NULL, 'a'}, + {"platform", required_argument, NULL, 'p'}, + {NULL, 0, NULL, 0}}; #define PROGRAM_NAME "lldb-lookup" -void -usage () -{ - puts ( - "NAME\n" - " " PROGRAM_NAME " -- symbolicate addresses using lldb.\n" - "\n" - "SYNOPSIS\n" - " " PROGRAM_NAME " [[--arch=<ARCH>] [--platform=<PLATFORM>] [--verbose] [--help] --] <PATH> <ADDRESS> [<ADDRESS>....]\n" - "\n" - "DESCRIPTION\n" - " Loads the executable pointed to by <PATH> and looks up and <ADDRESS>\n" - " arguments\n" - "\n" - "EXAMPLE\n" - " " PROGRAM_NAME " --arch=x86_64 -- /usr/lib/dyld 0x100000000\n" - ); - exit(0); +void usage() { + puts("NAME\n" + " " PROGRAM_NAME " -- symbolicate addresses using lldb.\n" + "\n" + "SYNOPSIS\n" + " " PROGRAM_NAME " [[--arch=<ARCH>] [--platform=<PLATFORM>] " + "[--verbose] [--help] --] <PATH> <ADDRESS> " + "[<ADDRESS>....]\n" + "\n" + "DESCRIPTION\n" + " Loads the executable pointed to by <PATH> and looks up and " + "<ADDRESS>\n" + " arguments\n" + "\n" + "EXAMPLE\n" + " " PROGRAM_NAME " --arch=x86_64 -- /usr/lib/dyld 0x100000000\n"); + exit(0); } -int -main (int argc, char const *argv[]) -{ - // Use a sentry object to properly initialize/terminate LLDB. - LLDBSentry sentry; - - SBDebugger debugger (SBDebugger::Create()); - - // Create a debugger instance so we can create a target - if (!debugger.IsValid()) - fprintf (stderr, "error: failed to create a debugger object\n"); - - bool show_usage = false; - bool verbose = false; - const char *arch = NULL; - const char *platform = NULL; - std::string short_options("h?"); - for (const struct option *opt = g_long_options; opt->name; ++opt) - { - if (isprint(opt->val)) - { - short_options.append(1, (char)opt->val); - switch (opt->has_arg) - { - case no_argument: - break; - case required_argument: - short_options.append(1, ':'); - break; - case optional_argument: - short_options.append(2, ':'); - break; - } - } +int main(int argc, char const *argv[]) { + // Use a sentry object to properly initialize/terminate LLDB. + LLDBSentry sentry; + + SBDebugger debugger(SBDebugger::Create()); + + // Create a debugger instance so we can create a target + if (!debugger.IsValid()) + fprintf(stderr, "error: failed to create a debugger object\n"); + + bool show_usage = false; + bool verbose = false; + const char *arch = NULL; + const char *platform = NULL; + std::string short_options("h?"); + for (const struct option *opt = g_long_options; opt->name; ++opt) { + if (isprint(opt->val)) { + short_options.append(1, (char)opt->val); + switch (opt->has_arg) { + case no_argument: + break; + case required_argument: + short_options.append(1, ':'); + break; + case optional_argument: + short_options.append(2, ':'); + break; + } } + } #ifdef __GLIBC__ - optind = 0; + optind = 0; #else - optreset = 1; - optind = 1; + optreset = 1; + optind = 1; #endif - char ch; - while ((ch = getopt_long_only(argc, (char * const *)argv, short_options.c_str(), g_long_options, 0)) != -1) - { - switch (ch) - { - case 0: - break; - - case 'a': - if (arch != NULL) - { - fprintf (stderr, "error: the --arch option can only be specified once\n"); - exit(1); - } - arch = optarg; - break; - - case 'p': - platform = optarg; - break; - - case 'v': - verbose = true; - break; - - case 'h': - case '?': - default: - show_usage = true; - break; - } - } - argc -= optind; - argv += optind; - - if (show_usage || argc < 2) - usage(); - - int arg_idx = 0; - // The first argument is the file path we want to look something up in - const char *exe_file_path = argv[arg_idx]; - const char *addr_cstr; - const bool add_dependent_libs = false; - SBError error; - SBStream strm; - strm.RedirectToFileHandle (stdout, false); - - while ((addr_cstr = argv[++arg_idx]) != NULL) - { - // The second argument in the address that we want to lookup - lldb::addr_t file_addr = strtoull (addr_cstr, NULL, 0); - - // Create a target using the executable. - SBTarget target = debugger.CreateTarget (exe_file_path, - arch, - platform, - add_dependent_libs, - error); - if (!error.Success()) - { - fprintf (stderr, "error: %s\n", error.GetCString()); - exit(1); - } - - printf ("%sLooking up 0x%llx in '%s':\n", (arg_idx > 1) ? "\n" : "", file_addr, exe_file_path); - - if (target.IsValid()) - { - // Find the executable module so we can do a lookup inside it - SBFileSpec exe_file_spec (exe_file_path, true); - SBModule module (target.FindModule (exe_file_spec)); - - // Take a file virtual address and resolve it to a section offset - // address that can be used to do a symbol lookup by address - SBAddress addr = module.ResolveFileAddress (file_addr); - bool success = addr.IsValid() && addr.GetSection().IsValid(); - if (success) - { - // We can resolve a section offset address in the module - // and only ask for what we need. You can logical or together - // bits from the SymbolContextItem enumeration found in - // lldb-enumeration.h to request only what you want. Here we - // are asking for everything. - // - // NOTE: the less you ask for, the less LLDB will parse as - // LLDB does partial parsing on just about everything. - SBSymbolContext sc (module.ResolveSymbolContextForAddress (addr, eSymbolContextEverything)); - - strm.Printf (" Address: %s + 0x%llx\n Summary: ", addr.GetSection().GetName (), addr.GetOffset()); - addr.GetDescription (strm); - strm.Printf ("\n"); - if (verbose) - sc.GetDescription (strm); - } - else - { - printf ("error: 0x%llx does not resolve to a valid file address in '%s'\n", file_addr, exe_file_path); - } - } + char ch; + while ((ch = getopt_long_only(argc, (char *const *)argv, + short_options.c_str(), g_long_options, 0)) != + -1) { + switch (ch) { + case 0: + break; + + case 'a': + if (arch != NULL) { + fprintf(stderr, + "error: the --arch option can only be specified once\n"); + exit(1); + } + arch = optarg; + break; + + case 'p': + platform = optarg; + break; + + case 'v': + verbose = true; + break; + + case 'h': + case '?': + default: + show_usage = true; + break; + } + } + argc -= optind; + argv += optind; + + if (show_usage || argc < 2) + usage(); + + int arg_idx = 0; + // The first argument is the file path we want to look something up in + const char *exe_file_path = argv[arg_idx]; + const char *addr_cstr; + const bool add_dependent_libs = false; + SBError error; + SBStream strm; + strm.RedirectToFileHandle(stdout, false); + + while ((addr_cstr = argv[++arg_idx]) != NULL) { + // The second argument in the address that we want to lookup + lldb::addr_t file_addr = strtoull(addr_cstr, NULL, 0); + + // Create a target using the executable. + SBTarget target = debugger.CreateTarget(exe_file_path, arch, platform, + add_dependent_libs, error); + if (!error.Success()) { + fprintf(stderr, "error: %s\n", error.GetCString()); + exit(1); } - return 0; -} + printf("%sLooking up 0x%llx in '%s':\n", (arg_idx > 1) ? "\n" : "", + file_addr, exe_file_path); + + if (target.IsValid()) { + // Find the executable module so we can do a lookup inside it + SBFileSpec exe_file_spec(exe_file_path, true); + SBModule module(target.FindModule(exe_file_spec)); + + // Take a file virtual address and resolve it to a section offset + // address that can be used to do a symbol lookup by address + SBAddress addr = module.ResolveFileAddress(file_addr); + bool success = addr.IsValid() && addr.GetSection().IsValid(); + if (success) { + // We can resolve a section offset address in the module + // and only ask for what we need. You can logical or together + // bits from the SymbolContextItem enumeration found in + // lldb-enumeration.h to request only what you want. Here we + // are asking for everything. + // + // NOTE: the less you ask for, the less LLDB will parse as + // LLDB does partial parsing on just about everything. + SBSymbolContext sc(module.ResolveSymbolContextForAddress( + addr, eSymbolContextEverything)); + + strm.Printf(" Address: %s + 0x%llx\n Summary: ", + addr.GetSection().GetName(), addr.GetOffset()); + addr.GetDescription(strm); + strm.Printf("\n"); + if (verbose) + sc.GetDescription(strm); + } else { + printf( + "error: 0x%llx does not resolve to a valid file address in '%s'\n", + file_addr, exe_file_path); + } + } + } + return 0; +} |