From db7a6fe44e18f382d05ea543ed3aa15cfd0cf086 Mon Sep 17 00:00:00 2001 From: Andrew Cagney Date: Thu, 21 Aug 2003 23:40:51 +0000 Subject: 2003-08-21 Andrew Cagney * thread-db.c (verbose_dlsym): New function. (thread_db_load): Use verbose_dlsym (thread_db_new_objfile): Print that libthread_db was loaded, and that thread debugging was enabled. --- gdb/ChangeLog | 7 +++++++ gdb/thread-db.c | 48 +++++++++++++++++++++++++++++++++++++----------- 2 files changed, 44 insertions(+), 11 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 1fe2dc5..05da66d 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,12 @@ 2003-08-21 Andrew Cagney + * thread-db.c (verbose_dlsym): New function. + (thread_db_load): Use verbose_dlsym + (thread_db_new_objfile): Print that libthread_db was loaded, and + that thread debugging was enabled. + +2003-08-21 Andrew Cagney + * x86-64-tdep.h (enum x86_64_regnums): Replace #define of X86_64_RAX_REGNUM, X86_64_RDX_REGNUM, X86_64_RDI_REGNUM, X86_64_RBP_REGNUM, X86_64_RSP_REGNUM, X86_64_RIP_REGNUM, diff --git a/gdb/thread-db.c b/gdb/thread-db.c index a039ca2..cc8c906 100644 --- a/gdb/thread-db.c +++ b/gdb/thread-db.c @@ -375,6 +375,15 @@ thread_db_init (struct target_ops *target) target_beneath = target; } +static void * +verbose_dlsym (void *handle, const char *name) +{ + void *sym = dlsym (handle, name); + if (sym == NULL) + warning ("Symbol \"%s\" not found in libthread_db: %s", name, dlerror ()); + return sym; +} + static int thread_db_load (void) { @@ -394,47 +403,47 @@ thread_db_load (void) /* Initialize pointers to the dynamic library functions we will use. Essential functions first. */ - td_init_p = dlsym (handle, "td_init"); + td_init_p = verbose_dlsym (handle, "td_init"); if (td_init_p == NULL) return 0; - td_ta_new_p = dlsym (handle, "td_ta_new"); + td_ta_new_p = verbose_dlsym (handle, "td_ta_new"); if (td_ta_new_p == NULL) return 0; - td_ta_map_id2thr_p = dlsym (handle, "td_ta_map_id2thr"); + td_ta_map_id2thr_p = verbose_dlsym (handle, "td_ta_map_id2thr"); if (td_ta_map_id2thr_p == NULL) return 0; - td_ta_map_lwp2thr_p = dlsym (handle, "td_ta_map_lwp2thr"); + td_ta_map_lwp2thr_p = verbose_dlsym (handle, "td_ta_map_lwp2thr"); if (td_ta_map_lwp2thr_p == NULL) return 0; - td_ta_thr_iter_p = dlsym (handle, "td_ta_thr_iter"); + td_ta_thr_iter_p = verbose_dlsym (handle, "td_ta_thr_iter"); if (td_ta_thr_iter_p == NULL) return 0; - td_thr_validate_p = dlsym (handle, "td_thr_validate"); + td_thr_validate_p = verbose_dlsym (handle, "td_thr_validate"); if (td_thr_validate_p == NULL) return 0; - td_thr_get_info_p = dlsym (handle, "td_thr_get_info"); + td_thr_get_info_p = verbose_dlsym (handle, "td_thr_get_info"); if (td_thr_get_info_p == NULL) return 0; - td_thr_getfpregs_p = dlsym (handle, "td_thr_getfpregs"); + td_thr_getfpregs_p = verbose_dlsym (handle, "td_thr_getfpregs"); if (td_thr_getfpregs_p == NULL) return 0; - td_thr_getgregs_p = dlsym (handle, "td_thr_getgregs"); + td_thr_getgregs_p = verbose_dlsym (handle, "td_thr_getgregs"); if (td_thr_getgregs_p == NULL) return 0; - td_thr_setfpregs_p = dlsym (handle, "td_thr_setfpregs"); + td_thr_setfpregs_p = verbose_dlsym (handle, "td_thr_setfpregs"); if (td_thr_setfpregs_p == NULL) return 0; - td_thr_setgregs_p = dlsym (handle, "td_thr_setgregs"); + td_thr_setgregs_p = verbose_dlsym (handle, "td_thr_setgregs"); if (td_thr_setgregs_p == NULL) return 0; @@ -587,6 +596,21 @@ thread_db_new_objfile (struct objfile *objfile) { td_err_e err; + /* First time through, report that libthread_db was successfuly + loaded. Can't print this in in thread_db_load as, at that stage, + the interpreter and it's console haven't started. The real + problem here is probably that libthread_db is loaded too early - + should it only be loaded when there is a program to debug? */ + { + static int dejavu; + if (!dejavu) + { + printf_unfiltered ("Using host libthread_db library \"%s\"\n", + LIBTHREAD_DB_SO); + dejavu = 1; + } + } + /* Don't attempt to use thread_db on targets which can not run (core files). */ if (objfile == NULL || !target_has_execution) @@ -624,6 +648,8 @@ thread_db_new_objfile (struct objfile *objfile) break; case TD_OK: + printf_unfiltered ("[Thread debugging using libthread_db enabled]\n"); + /* The thread library was detected. Activate the thread_db target. */ push_target (&thread_db_ops); using_thread_db = 1; -- cgit v1.1