diff options
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 38 | ||||
| -rw-r--r-- | gdb/Makefile.in | 6 | ||||
| -rw-r--r-- | gdb/NEWS | 3 | ||||
| -rw-r--r-- | gdb/breakpoint.c | 93 | ||||
| -rw-r--r-- | gdb/breakpoint.h | 6 | ||||
| -rw-r--r-- | gdb/cli/cli-cmds.c | 5 | ||||
| -rw-r--r-- | gdb/cli/cli-cmds.h | 2 | ||||
| -rw-r--r-- | gdb/doc/gdb.texinfo | 105 | ||||
| -rw-r--r-- | gdb/gdbcmd.h | 2 | ||||
| -rw-r--r-- | gdb/infrun.c | 7 | ||||
| -rw-r--r-- | gdb/skip.c | 602 | ||||
| -rw-r--r-- | gdb/skip.h | 28 | ||||
| -rw-r--r-- | gdb/stack.c | 118 | ||||
| -rw-r--r-- | gdb/stack.h | 10 | ||||
| -rw-r--r-- | gdb/symfile.c | 3 | ||||
| -rw-r--r-- | gdb/testsuite/ChangeLog | 11 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.base/Makefile.in | 4 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.base/skip-solib-lib.c | 11 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.base/skip-solib-main.c | 6 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.base/skip-solib.exp | 130 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.base/skip.c | 13 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.base/skip.exp | 179 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.base/skip1.c | 9 |
23 files changed, 1324 insertions, 67 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 55ae497..d41cde2 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,41 @@ +2011-10-06 Justin Lebar <justin.lebar@gmail.com> + + * Makefile.in: (SFILES): Add skip.c. + (HFILES_NO_SRCDIR): Add skip.h. + (COMMON_OBS): Add skip.o. + * skip.h, skip.c: New. + * breakpoint.h (set_default_breakpoint): Remove. + (get_sal_arch): Declare. + * breakpoint.c: Remove default_breakpoint_valid, + default_breakpoint_address, default_breakpoint_symtab, + default_breakpoint_line, default_breakpoint_pspace variables. + (get_sal_arch): Make public. + (set_default_breakpoint): Remove. + (parse_breakpoint_sals, create_breakpoint, clear_command, + decode_line_spec_1): Remove uses of default_breakpoint variables; + replaced with function calls into stack.c. + * cli/cli-cmds.h: Add cmd_list_element *skiplist. + * cli/cli-cmds.c: Add skiplist. + (init_cmd_lists): Initialize skiplist. + (init_cli_cmds): Fix comment (classes of commands appear in + alphabetical order). + * infrun.c (handle_inferior_event): Add check that we don't step into + a function whose pc is marked for skip. + * stack.c: Declare last_displayed_sal_valid, last_displayed_pspace, + last_displayed_addr, last_displayed_symtab, last_displayed_line + variables. + (set_last_displayed_sal): New static function. + (print_frame_info): Switch call to set_default_breakpoint to call to + set_last_displayed_sal. + (clear_last_displayed_sal, last_displayed_sal_is_valid, + get_last_displayed_pspace, get_last_displayed_addr, + get_last_displayed_symtab, get_last_displayed_line, + get_last_displayed_sal): New public functions. + * stack.h (clear_last_displayed_sal, last_displayed_sal_is_valid, + get_last_displayed_pspace, get_last_displayed_addr, + get_last_displayed_symtab, get_last_displayed_line, + get_last_displayed_sal): Declare. + 2011-11-01 Justin Lebar <justin.lebar@gmail.com> * MAINTAINERS (Write After Approval): Add myself to the list. diff --git a/gdb/Makefile.in b/gdb/Makefile.in index 32d8ef3..7a7ff9f 100644 --- a/gdb/Makefile.in +++ b/gdb/Makefile.in @@ -727,7 +727,7 @@ SFILES = ada-exp.y ada-lang.c ada-typeprint.c ada-valprint.c ada-tasks.c \ prologue-value.c psymtab.c \ regcache.c reggroups.c remote.c remote-fileio.c reverse.c \ sentinel-frame.c \ - serial.c ser-base.c ser-unix.c \ + serial.c ser-base.c ser-unix.c skip.c \ solib.c solib-target.c source.c \ stabsread.c stack.c std-regs.c symfile.c symfile-mem.c symmisc.c \ symtab.c \ @@ -827,7 +827,7 @@ osdata.h procfs.h python/py-event.h python/py-events.h python/py-stopevent.h \ python/python-internal.h python/python.h ravenscar-thread.h record.h \ solib-darwin.h solib-ia64-hpux.h solib-spu.h windows-nat.h xcoffread.h \ gnulib/extra/arg-nonnull.h gnulib/extra/c++defs.h gnulib/extra/warn-on-use.h \ -gnulib/stddef.in.h inline-frame.h \ +gnulib/stddef.in.h inline-frame.h skip.h \ common/common-utils.h common/xml-utils.h common/buffer.h common/ptid.h \ common/linux-osdata.h @@ -915,7 +915,7 @@ COMMON_OBS = $(DEPFILES) $(CONFIG_OBS) $(YYOBJ) \ xml-support.o xml-syscall.o xml-utils.o \ target-descriptions.o target-memory.o xml-tdesc.o xml-builtin.o \ inferior.o osdata.o gdb_usleep.o record.o gcore.o \ - jit.o progspace.o \ + jit.o progspace.o skip.o \ common-utils.o buffer.o ptid.o TSOBS = inflow.o @@ -3,6 +3,9 @@ *** Changes since GDB 7.3.1 +* GDB now allows you to skip uninteresting functions and files when + stepping with the "skip function" and "skip file" commands. + * GDB has two new commands: "set remote hardware-watchpoint-length-limit" and "show remote hardware-watchpoint-length-limit". These allows to set or show the maximum length limit (in bytes) of a remote diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c index ba1b08f..8c98bef 100644 --- a/gdb/breakpoint.c +++ b/gdb/breakpoint.c @@ -65,6 +65,8 @@ #include "parser-defs.h" #include "cli/cli-utils.h" #include "continuations.h" +#include "stack.h" +#include "skip.h" /* readline include files */ #include "readline/readline.h" @@ -572,19 +574,6 @@ make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) return make_cleanup (do_cleanup_counted_command_line, cmdp); } -/* Default address, symtab and line to put a breakpoint at - for "break" command with no arg. - If default_breakpoint_valid is zero, the other three are - not valid, and "break" with no arg is an error. - - This set by print_stack_frame, which calls set_default_breakpoint. */ - -int default_breakpoint_valid; -CORE_ADDR default_breakpoint_address; -struct symtab *default_breakpoint_symtab; -int default_breakpoint_line; -struct program_space *default_breakpoint_pspace; - /* Return the breakpoint with the specified number, or NULL if the number does not refer to an existing breakpoint. */ @@ -5339,20 +5328,6 @@ describe_other_breakpoints (struct gdbarch *gdbarch, } } -/* Set the default place to put a breakpoint - for the `break' command with no arguments. */ - -void -set_default_breakpoint (int valid, struct program_space *pspace, - CORE_ADDR addr, struct symtab *symtab, - int line) -{ - default_breakpoint_valid = valid; - default_breakpoint_pspace = pspace; - default_breakpoint_address = addr; - default_breakpoint_symtab = symtab; - default_breakpoint_line = line; -} /* Return true iff it is meaningful to use the address member of BPT. For some breakpoint types, the address member is irrelevant @@ -5764,7 +5739,7 @@ set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) } /* Attempt to determine architecture of location identified by SAL. */ -static struct gdbarch * +struct gdbarch * get_sal_arch (struct symtab_and_line sal) { if (sal.section) @@ -7543,24 +7518,26 @@ parse_breakpoint_sals (char **address, if ((*address) == NULL || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) { - if (default_breakpoint_valid) + /* The last displayed codepoint, if it's valid, is our default breakpoint + address. */ + if (last_displayed_sal_is_valid ()) { struct symtab_and_line sal; init_sal (&sal); /* Initialize to zeroes. */ sals->sals = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line)); - sal.pc = default_breakpoint_address; - sal.line = default_breakpoint_line; - sal.symtab = default_breakpoint_symtab; - sal.pspace = default_breakpoint_pspace; - sal.section = find_pc_overlay (sal.pc); + + /* Set sal's pspace, pc, symtab, and line to the values + corresponding to the last call to print_frame_info. */ + get_last_displayed_sal (&sal); + sal.section = find_pc_overlay (sal.pc); /* "break" without arguments is equivalent to "break *PC" - where PC is the default_breakpoint_address. So make sure - to set sal.explicit_pc to prevent GDB from trying to - expand the list of sals to include all other instances - with the same symtab and line. */ + where PC is the last displayed codepoint's address. So + make sure to set sal.explicit_pc to prevent GDB from + trying to expand the list of sals to include all other + instances with the same symtab and line. */ sal.explicit_pc = 1; sals->sals[0] = sal; @@ -7574,19 +7551,22 @@ parse_breakpoint_sals (char **address, /* Force almost all breakpoints to be in terms of the current_source_symtab (which is decode_line_1's default). This should produce the results we want almost all of the - time while leaving default_breakpoint_* alone. + time while leaving the last displayed codepoint pointers + alone. ObjC: However, don't match an Objective-C method name which may have a '+' or '-' succeeded by a '[' */ struct symtab_and_line cursal = get_current_source_symtab_and_line (); - if (default_breakpoint_valid + if (last_displayed_sal_is_valid () && (!cursal.symtab || ((strchr ("+-", (*address)[0]) != NULL) && ((*address)[1] != '[')))) - *sals = decode_line_1 (address, 1, default_breakpoint_symtab, - default_breakpoint_line, canonical); + *sals = decode_line_1 (address, 1, + get_last_displayed_symtab (), + get_last_displayed_line (), + canonical); else *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, canonical); @@ -9611,9 +9591,11 @@ until_break_command (char *arg, int from_tty, int anywhere) /* Set a breakpoint where the user wants it and at return from this function. */ - if (default_breakpoint_valid) - sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, - default_breakpoint_line, NULL); + if (last_displayed_sal_is_valid ()) + sals = decode_line_1 (&arg, 1, + get_last_displayed_symtab (), + get_last_displayed_line (), + NULL); else sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, 0, NULL); @@ -10135,10 +10117,11 @@ clear_command (char *arg, int from_tty) xmalloc (sizeof (struct symtab_and_line)); make_cleanup (xfree, sals.sals); init_sal (&sal); /* Initialize to zeroes. */ - sal.line = default_breakpoint_line; - sal.symtab = default_breakpoint_symtab; - sal.pc = default_breakpoint_address; - sal.pspace = default_breakpoint_pspace; + + /* Set sal's line, symtab, pc, and pspace to the values + corresponding to the last call to print_frame_info. If the + codepoint is not valid, this will set all the fields to 0. */ + get_last_displayed_sal (&sal); if (sal.symtab == 0) error (_("No source file specified.")); @@ -11986,6 +11969,9 @@ breakpoint_re_set (void) create_longjmp_master_breakpoint (); create_std_terminate_master_breakpoint (); create_exception_master_breakpoint (); + + /* While we're at it, reset the skip list too. */ + skip_re_set (); } /* Reset the thread number of this breakpoint: @@ -12435,7 +12421,8 @@ invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, } } -/* Use default_breakpoint_'s, or nothing if they aren't valid. */ +/* Use the last displayed codepoint's values, or nothing + if they aren't valid. */ struct symtabs_and_lines decode_line_spec_1 (char *string, int funfirstline) @@ -12444,10 +12431,10 @@ decode_line_spec_1 (char *string, int funfirstline) if (string == 0) error (_("Empty line specification.")); - if (default_breakpoint_valid) + if (last_displayed_sal_is_valid ()) sals = decode_line_1 (&string, funfirstline, - default_breakpoint_symtab, - default_breakpoint_line, + get_last_displayed_symtab (), + get_last_displayed_line (), NULL); else sals = decode_line_1 (&string, funfirstline, diff --git a/gdb/breakpoint.h b/gdb/breakpoint.h index c2116e2..fe381df 100644 --- a/gdb/breakpoint.h +++ b/gdb/breakpoint.h @@ -1033,9 +1033,6 @@ extern struct breakpoint *clone_momentary_breakpoint (struct breakpoint *bpkt); extern void set_ignore_count (int, int, int); -extern void set_default_breakpoint (int, struct program_space *, - CORE_ADDR, struct symtab *, int); - extern void breakpoint_init_inferior (enum inf_context); extern struct cleanup *make_cleanup_delete_breakpoint (struct breakpoint *); @@ -1365,4 +1362,7 @@ extern int pc_at_non_inline_function (struct address_space *aspace, extern int user_breakpoint_p (struct breakpoint *); +/* Attempt to determine architecture of location identified by SAL. */ +extern struct gdbarch *get_sal_arch (struct symtab_and_line sal); + #endif /* !defined (BREAKPOINT_H) */ diff --git a/gdb/cli/cli-cmds.c b/gdb/cli/cli-cmds.c index 624d0de..94328c4 100644 --- a/gdb/cli/cli-cmds.c +++ b/gdb/cli/cli-cmds.c @@ -186,6 +186,8 @@ struct cmd_list_element *setchecklist; struct cmd_list_element *showchecklist; +struct cmd_list_element *skiplist; + /* Command tracing state. */ int source_verbose = 0; @@ -1511,6 +1513,7 @@ init_cmd_lists (void) showprintlist = NULL; setchecklist = NULL; showchecklist = NULL; + skiplist = NULL; } static void @@ -1576,7 +1579,7 @@ init_cli_cmds (void) char *source_help_text; /* Define the classes of commands. - They will appear in the help list in the reverse of this order. */ + They will appear in the help list in alphabetical order. */ add_cmd ("internals", class_maintenance, NULL, _("\ Maintenance commands.\n\ diff --git a/gdb/cli/cli-cmds.h b/gdb/cli/cli-cmds.h index e79dcf0..73ccdd2 100644 --- a/gdb/cli/cli-cmds.h +++ b/gdb/cli/cli-cmds.h @@ -106,6 +106,8 @@ extern struct cmd_list_element *setchecklist; extern struct cmd_list_element *showchecklist; +extern struct cmd_list_element *skiplist; + /* Exported to gdb/top.c */ void init_cmd_lists (void); diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index c200b55..0f37e6e 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -4854,6 +4854,111 @@ proceed until the function returns. An argument is a repeat count, as in @code{next}. @end table +@node Skipping Over Functions and Files +@subsection Skipping Over Functions and Files +@cindex skipping over functions and files + +The program you are debugging may contain some functions which are +uninteresting to debug. The @code{skip} comand lets you tell @value{GDBN} to +skip a function or all functions in a file when stepping. + +For example, consider the following C function: + +@smallexample +101 int func() +102 @{ +103 foo(boring()); +104 bar(boring()); +105 @} +@end smallexample + +@noindent +Suppose you wish to step into the functions @code{foo} and @code{bar}, but you +are not interested in stepping through @code{boring}. If you run @code{step} +at line 103, you'll enter @code{boring()}, but if you run @code{next}, you'll +step over both @code{foo} and @code{boring}! + +One solution is to @code{step} into @code{boring} and use the @code{finish} +command to immediately exit it. But this can become tedious if @code{boring} +is called from many places. + +A more flexible solution is to execute @kbd{skip boring}. This instructs +@value{GDBN} never to step into @code{boring}. Now when you execute +@code{step} at line 103, you'll step over @code{boring} and directly into +@code{foo}. + +You can also instruct @value{GDBN} to skip all functions in a file, with, for +example, @code{skip file boring.c}. + +@table @code +@kindex skip function +@item skip @r{[}@var{linespec}@r{]} +@itemx skip function @r{[}@var{linespec}@r{]} +After running this command, the function named by @var{linespec} or the +function containing the line named by @var{linespec} will be skipped over when +stepping. @xref{Specify Location} + +If you do not specify @var{linespec}, the function you're currently debugging +will be skipped. + +(If you have a function called @code{file} that you want to skip, use +@kbd{skip function file}.) + +@kindex skip file +@item skip file @r{[}@var{filename}@r{]} +After running this command, any function whose source lives in @var{filename} +will be skipped over when stepping. + +If you do not specify @var{filename}, functions whose source lives in the file +you're currently debugging will be skipped. +@end table + +Skips can be listed, deleted, disabled, and enabled, much like breakpoints. +These are the commands for managing your list of skips: + +@table @code +@kindex info skip +@item info skip @r{[}@var{range}@r{]} +Print details about the specified skip(s). If @var{range} is not specified, +print a table with details about all functions and files marked for skipping. +@code{info skip} prints the following information about each skip: + +@table @emph +@item Identifier +A number identifying this skip. +@item Type +The type of this skip, either @samp{function} or @samp{file}. +@item Enabled or Disabled +Enabled skips are marked with @samp{y}. Disabled skips are marked with @samp{n}. +@item Address +For function skips, this column indicates the address in memory of the function +being skipped. If you've set a function skip on a function which has not yet +been loaded, this field will contain @samp{<PENDING>}. Once a shared library +which has the function is loaded, @code{info skip} will show the function's +address here. +@item What +For file skips, this field contains the filename being skipped. For functions +skips, this field contains the function name and its line number in the file +where it is defined. +@end table + +@kindex skip delete +@item skip delete @r{[}@var{range}@r{]} +Delete the specified skip(s). If @var{range} is not specified, delete all +skips. + +@kindex skip enable +@item skip enable @r{[}@var{range}@r{]} +Enable the specified skip(s). If @var{range} is not specified, enable all +skips. + +@kindex skip disable +@item skip disable @r{[}@var{range}@r{]} +Disable the specified skip(s). If @var{range} is not specified, disable all +skips. + +@end table + @node Signals @section Signals @cindex signals diff --git a/gdb/gdbcmd.h b/gdb/gdbcmd.h index c02ce69..606b812 100644 --- a/gdb/gdbcmd.h +++ b/gdb/gdbcmd.h @@ -124,6 +124,8 @@ extern struct cmd_list_element *setchecklist; extern struct cmd_list_element *showchecklist; +extern struct cmd_list_element *skiplist; + /* Chain containing all defined "save" subcommands. */ extern struct cmd_list_element *save_cmdlist; diff --git a/gdb/infrun.c b/gdb/infrun.c index e0c59a1..7ec0788 100644 --- a/gdb/infrun.c +++ b/gdb/infrun.c @@ -56,6 +56,7 @@ #include "tracepoint.h" #include "continuations.h" #include "interps.h" +#include "skip.h" /* Prototypes for local functions */ @@ -4917,7 +4918,8 @@ process_event_stop_test: } /* If we have line number information for the function we are - thinking of stepping into, step into it. + thinking of stepping into and the function isn't on the skip + list, step into it. If there are several symtabs at that PC (e.g. with include files), just want to know whether *any* of them have line @@ -4926,7 +4928,8 @@ process_event_stop_test: struct symtab_and_line tmp_sal; tmp_sal = find_pc_line (ecs->stop_func_start, 0); - if (tmp_sal.line != 0) + if (tmp_sal.line != 0 && + !function_pc_is_marked_for_skip (ecs->stop_func_start)) { if (execution_direction == EXEC_REVERSE) handle_step_into_function_backward (gdbarch, ecs); diff --git a/gdb/skip.c b/gdb/skip.c new file mode 100644 index 0000000..4bda3c4 --- /dev/null +++ b/gdb/skip.c @@ -0,0 +1,602 @@ +/* Skipping uninteresting files and functions while stepping. + + Copyright (C) 2011 Free Software Foundation, Inc. + + 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 3 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, see <http://www.gnu.org/licenses/>. */ + +#include "defs.h" +#include "skip.h" +#include "value.h" +#include "valprint.h" +#include "ui-out.h" +#include "gdb_string.h" +#include "symtab.h" +#include "gdbcmd.h" +#include "command.h" +#include "completer.h" +#include "stack.h" +#include "cli/cli-utils.h" +#include "arch-utils.h" +#include "linespec.h" +#include "objfiles.h" +#include "exceptions.h" +#include "breakpoint.h" /* for get_sal_arch () */ + +struct skiplist_entry +{ + int number; + + /* NULL if this isn't a skiplist entry for an entire file. + The skiplist entry owns this pointer. */ + char *filename; + + /* The name of the marked-for-skip function, if this is a skiplist + entry for a function. Note that this might be non-null even if + the pc is 0 if the entry is pending a shared library load. + + The skiplist entry owns this pointer. */ + char *function_name; + + /* 0 if this is a skiplist entry for an entire file, or if this + entry will be on a function, pending a shared library load. */ + CORE_ADDR pc; + + /* Architecture we used to create the skiplist entry. May be null + if the entry is pending a shared library load. */ + struct gdbarch *gdbarch; + + int enabled; + int pending; + + struct skiplist_entry *next; +}; + +static void skip_function_command (char *arg, int from_tty); +static void skip_file_command (char *arg, int from_tty); +static void skip_info (char *arg, int from_tty); + +static void add_skiplist_entry (struct skiplist_entry *e); +static void skip_function_pc (CORE_ADDR pc, char *name, + struct gdbarch *arch, + int pending); + +static struct skiplist_entry *skiplist_entry_chain; +static int skiplist_entry_count; + +#define ALL_SKIPLIST_ENTRIES(E) \ + for (E = skiplist_entry_chain; E; E = E->next) + +#define ALL_SKIPLIST_ENTRIES_SAFE(E,TMP) \ + for (E = skiplist_entry_chain; \ + E ? (TMP = E->next, 1) : 0; \ + E = TMP) + +static void +skip_file_command (char *arg, int from_tty) +{ + struct skiplist_entry *e; + struct symtab *symtab; + int pending = 0; + char *filename = 0; + + /* If no argument was given, try to default to the last + displayed codepoint. */ + if (arg == 0) + { + symtab = get_last_displayed_symtab (); + if (symtab == 0) + error (_("No default file now.")); + else + filename = symtab->filename; + } + else + { + symtab = lookup_symtab (arg); + if (symtab == 0) + { + fprintf_filtered (gdb_stderr, _("No source file named %s.\n"), arg); + if (!nquery (_("\ +Ignore file pending future shared library load? "))) + return; + + pending = 1; + filename = arg; + } + else + filename = symtab->filename; + } + + e = XZALLOC (struct skiplist_entry); + e->filename = xstrdup (filename); + e->enabled = 1; + e->pending = pending; + if (symtab != 0) + e->gdbarch = get_objfile_arch (symtab->objfile); + + add_skiplist_entry (e); + + printf_filtered (_("File %s will be skipped when stepping.\n"), filename); +} + +static void +skip_function_command (char *arg, int from_tty) +{ + CORE_ADDR func_pc; + char *name = NULL; + + /* Default to the current function if no argument is given. */ + if (arg == 0) + { + CORE_ADDR pc; + if (!last_displayed_sal_is_valid ()) + error (_("No default function now.")); + + pc = get_last_displayed_addr (); + if (!find_pc_partial_function (pc, &name, &func_pc, 0)) + { + error (_("No function found containing current program point %s."), + paddress (get_current_arch (), pc)); + } + skip_function_pc (func_pc, name, get_current_arch (), 0); + } + else + { + /* Decode arg. We set funfirstline=1 so decode_line_1 will give us the + first line of the function specified, if it can, and so that we'll + reject variable names and the like. */ + + int i; + int pending = 0; + char *orig_arg = arg; /* decode_line_1 modifies the arg pointer. */ + volatile struct gdb_exception decode_exception; + struct symtabs_and_lines sals; + + TRY_CATCH (decode_exception, RETURN_MASK_ERROR) + { + sals = decode_line_1 (&arg, 1, 0, 0, 0); + } + + if (decode_exception.reason < 0) + { + if (decode_exception.error != NOT_FOUND_ERROR) + throw_exception (decode_exception); + + fprintf_filtered (gdb_stderr, + _("No function found named %s.\n"), orig_arg); + + if (nquery (_("\ +Ignore function pending future shared library load? "))) + { + /* Add the pending skiplist entry. */ + skip_function_pc (0, orig_arg, 0, 1); + } + + return; + } + + if (sals.nelts > 1) + error (_("Specify just one function at a time.")); + if (strlen (arg) != 0) + error (_("Junk at end of arguments.")); + + /* The pc decode_line_1 gives us is the first line of the function, + but we actually want the line before that. The call to + find_pc_partial_function gets us the value we actually want. */ + { + struct symtab_and_line sal = sals.sals[0]; + CORE_ADDR pc = sal.pc; + CORE_ADDR func_start = 0; + struct gdbarch *arch = get_sal_arch (sal); + + if (!find_pc_partial_function (pc, &name, &func_start, 0)) + { + error (_("No function found containing program point %s."), + paddress (arch, pc)); + } + + skip_function_pc (func_start, name, arch, 0); + } + } +} + +static void +skip_info (char *arg, int from_tty) +{ + struct skiplist_entry *e; + int num_printable_entries = 0; + int address_width = 10; + struct value_print_options opts; + struct cleanup *tbl_chain; + + get_user_print_options (&opts); + + /* Count the number of rows in the table and see if we need space for a + 64-bit address anywhere. */ + ALL_SKIPLIST_ENTRIES (e) + if (arg == 0 || number_is_in_list (arg, e->number)) + { + num_printable_entries++; + if (e->gdbarch && gdbarch_addr_bit (e->gdbarch) > 32) + address_width = 18; + } + + if (num_printable_entries == 0) + { + if (arg == 0) + ui_out_message (current_uiout, 0, _("\ +Not skipping any files or functions.\n")); + else + ui_out_message (current_uiout, 0, + _("No skiplist entries found with number %s.\n"), arg); + + return; + } + + if (opts.addressprint) + tbl_chain = make_cleanup_ui_out_table_begin_end (current_uiout, 5, + num_printable_entries, + "SkiplistTable"); + else + tbl_chain + = make_cleanup_ui_out_table_begin_end (current_uiout, 4, + num_printable_entries, + "SkiplistTable"); + + ui_out_table_header (current_uiout, 7, ui_left, "number", "Num"); /* 1 */ + ui_out_table_header (current_uiout, 14, ui_left, "type", "Type"); /* 2 */ + ui_out_table_header (current_uiout, 3, ui_left, "enabled", "Enb"); /* 3 */ + if (opts.addressprint) + { + ui_out_table_header (current_uiout, address_width, ui_left, + "addr", "Address"); /* 4 */ + } + ui_out_table_header (current_uiout, 40, ui_noalign, "what", "What"); /* 5 */ + ui_out_table_body (current_uiout); + + ALL_SKIPLIST_ENTRIES (e) + { + struct cleanup *entry_chain; + + QUIT; + if (arg != 0 && !number_is_in_list (arg, e->number)) + continue; + + entry_chain = make_cleanup_ui_out_tuple_begin_end (current_uiout, + "blklst-entry"); + ui_out_field_int (current_uiout, "number", e->number); /* 1 */ + + if (e->function_name != 0) + ui_out_field_string (current_uiout, "type", "function"); /* 2 */ + else if (e->filename != 0) + ui_out_field_string (current_uiout, "type", "file"); /* 2 */ + else + internal_error (__FILE__, __LINE__, _("\ +Skiplist entry should have either a filename or a function name.")); + + if (e->enabled) + ui_out_field_string (current_uiout, "enabled", "y"); /* 3 */ + else + ui_out_field_string (current_uiout, "enabled", "n"); /* 3 */ + + if (opts.addressprint) + { + if (e->pc != 0) + ui_out_field_core_addr (current_uiout, "addr", + e->gdbarch, e->pc); /* 4 */ + else + ui_out_field_string (current_uiout, "addr", ""); /* 4 */ + } + + if (!e->pending && e->function_name != 0) + { + struct symbol *sym; + + gdb_assert (e->pc != 0); + sym = find_pc_function (e->pc); + if (sym) + ui_out_field_fmt (current_uiout, "what", "%s at %s:%d", + sym->ginfo.name, + sym->symtab->filename, + sym->line); + else + ui_out_field_string (current_uiout, "what", "?"); + } + else if (e->pending && e->function_name != 0) + { + ui_out_field_fmt (current_uiout, "what", "%s (PENDING)", + e->function_name); + } + else if (!e->pending && e->filename != 0) + ui_out_field_string (current_uiout, "what", e->filename); + else if (e->pending && e->filename != 0) + ui_out_field_fmt (current_uiout, "what", "%s (PENDING)", + e->filename); + + ui_out_text (current_uiout, "\n"); + do_cleanups (entry_chain); + } + + do_cleanups (tbl_chain); +} + +static void +skip_enable_command (char *arg, int from_tty) +{ + struct skiplist_entry *e; + int found = 0; + + ALL_SKIPLIST_ENTRIES (e) + if (arg == 0 || number_is_in_list (arg, e->number)) + { + e->enabled = 1; + found = 1; + } + + if (!found) + error (_("No skiplist entries found with number %s."), arg); +} + +static void +skip_disable_command (char *arg, int from_tty) +{ + struct skiplist_entry *e; + int found = 0; + + ALL_SKIPLIST_ENTRIES (e) + if (arg == 0 || number_is_in_list (arg, e->number)) + { + e->enabled = 0; + found = 1; + } + + if (!found) + error (_("No skiplist entries found with number %s."), arg); +} + +static void +skip_delete_command (char *arg, int from_tty) +{ + struct skiplist_entry *e, *temp, *b_prev; + int found = 0; + + b_prev = 0; + ALL_SKIPLIST_ENTRIES_SAFE (e, temp) + if (arg == 0 || number_is_in_list (arg, e->number)) + { + if (b_prev != 0) + b_prev->next = e->next; + else + skiplist_entry_chain = e->next; + + xfree (e->function_name); + xfree (e->filename); + xfree (e); + found = 1; + } + else + { + b_prev = e; + } + + if (!found) + error (_("No skiplist entries found with number %s."), arg); +} + +/* Create a skiplist entry for the given pc corresponding to the given + function name and add it to the list. */ + +static void +skip_function_pc (CORE_ADDR pc, char *name, struct gdbarch *arch, + int pending) +{ + struct skiplist_entry *e = XZALLOC (struct skiplist_entry); + + e->pc = pc; + e->gdbarch = arch; + e->enabled = 1; + e->pending = pending; + e->function_name = xstrdup (name); + + add_skiplist_entry (e); + + if (!pending) + printf_filtered (_("Function %s at %s will be skipped when stepping.\n"), + name, paddress (get_current_arch (), pc)); + else + printf_filtered (_("Function %s will be skipped when stepping, " + "pending shared library load.\n"), + name); +} + +/* Add the given skiplist entry to our list, and set the entry's number. */ + +static void +add_skiplist_entry (struct skiplist_entry *e) +{ + struct skiplist_entry *e1; + + e->number = ++skiplist_entry_count; + + /* Add to the end of the chain so that the list of + skiplist entries will be in numerical order. */ + + e1 = skiplist_entry_chain; + if (e1 == 0) + skiplist_entry_chain = e; + else + { + while (e1->next) + e1 = e1->next; + e1->next = e; + } +} + +/* Does the given pc correspond to the beginning of a skipped function? */ + +int +function_pc_is_marked_for_skip (CORE_ADDR pc) +{ + int searched_for_sal = 0; + struct symtab_and_line sal; + char *filename = NULL; + struct skiplist_entry *e; + + ALL_SKIPLIST_ENTRIES (e) + { + if (!e->enabled || e->pending) + continue; + + /* Does the pc we're stepping into match e's stored pc? */ + if (e->pc != 0 && pc == e->pc) + return 1; + + if (e->filename != 0) + { + /* Get the filename corresponding to this pc, if we haven't + * yet. */ + if (!searched_for_sal) + { + sal = find_pc_line (pc, 0); + if (sal.symtab != 0) + filename = sal.symtab->filename; + searched_for_sal = 1; + } + if (filename != 0 && strcmp (filename, e->filename) == 0) + return 1; + } + } + + return 0; +} + +/* Re-set the skip list after symbols have been re-loaded. */ +void +skip_re_set (void) +{ + struct skiplist_entry *e; + + ALL_SKIPLIST_ENTRIES (e) + { + if (e->filename != 0) + { + /* If it's an entry telling us to skip a file, but the entry is + currently pending a solib load, let's see if we now know + about the file. */ + struct symtab *symtab = lookup_symtab (e->filename); + if (symtab != 0) + { + xfree (e->filename); + e->filename = xstrdup (symtab->filename); + e->gdbarch = get_objfile_arch (symtab->objfile); + e->pending = 0; + } + else + { + e->pending = 1; + } + } + else if (e->function_name != 0) + { + char *func_name = e->function_name; + struct symtabs_and_lines sals; + volatile struct gdb_exception decode_exception; + + TRY_CATCH (decode_exception, RETURN_MASK_ERROR) + { + sals = decode_line_1 (&func_name, 1, 0, 0, 0); + } + + if (decode_exception.reason >= 0 + && sals.nelts == 1 && strlen (func_name) == 0) + { + struct symtab_and_line sal = sals.sals[0]; + CORE_ADDR pc = sal.pc; + CORE_ADDR func_start = 0; + struct gdbarch *arch = get_sal_arch (sal); + char *func_name; + + if (find_pc_partial_function (pc, &func_name, &func_start, 0)) + { + e->pending = 0; + e->function_name = xstrdup (func_name); + e->pc = func_start; + e->gdbarch = arch; + } + } + else + { + e->pending = 1; + } + } + } +} + +void +_initialize_step_skip (void) +{ + struct cmd_list_element *c; + + skiplist_entry_chain = 0; + skiplist_entry_count = 0; + + add_prefix_cmd ("skip", class_breakpoint, skip_function_command, _("\ +Ignore a function while stepping.\n\ +Usage: skip [FUNCTION NAME]\n\ +If no function name is given, ignore the current function."), + &skiplist, "skip ", 1, &cmdlist); + + c = add_cmd ("file", class_breakpoint, skip_file_command, _("\ +Ignore a file while stepping.\n\ +Usage: skip file [FILENAME]\n\ +If no filename is given, ignore the current file."), + &skiplist); + set_cmd_completer (c, filename_completer); + + c = add_cmd ("function", class_breakpoint, skip_function_command, _("\ +Ignore a function while stepping.\n\ +Usage: skip function [FUNCTION NAME]\n\ +If no function name is given, skip the current function."), + &skiplist); + set_cmd_completer (c, location_completer); + + add_cmd ("enable", class_breakpoint, skip_enable_command, _("\ +Enable skip entries. You can specify numbers (e.g. \"skip enable 1 3\"), \ +ranges (e.g. \"skip enable 4-8\"), or both (e.g. \"skip enable 1 3 4-8\").\n\n\ +If you don't specify any numbers or ranges, we'll enable all skip entries.\n\n\ +Usage: skip enable [NUMBERS AND/OR RANGES]"), + &skiplist); + + add_cmd ("disable", class_breakpoint, skip_disable_command, _("\ +Disable skip entries. You can specify numbers (e.g. \"skip disable 1 3\"), \ +ranges (e.g. \"skip disable 4-8\"), or both (e.g. \"skip disable 1 3 4-8\").\n\n\ +If you don't specify any numbers or ranges, we'll disable all skip entries.\n\n\ +Usage: skip disable [NUMBERS AND/OR RANGES]"), + &skiplist); + + add_cmd ("delete", class_breakpoint, skip_delete_command, _("\ +Delete skip entries. You can specify numbers (e.g. \"skip delete 1 3\"), \ +ranges (e.g. \"skip delete 4-8\"), or both (e.g. \"skip delete 1 3 4-8\").\n\n\ +If you don't specify any numbers or ranges, we'll delete all skip entries.\n\n\ +Usage: skip delete [NUMBERS AND/OR RANGES]"), + &skiplist); + + add_info ("skip", skip_info, _("\ +Display the status of skips. You can specify numbers (e.g. \"skip info 1 3\"), \ +ranges (e.g. \"skip info 4-8\"), or both (e.g. \"skip info 1 3 4-8\").\n\n\ +If you don't specify any numbers or ranges, we'll show all skips.\n\n\ +Usage: skip info [NUMBERS AND/OR RANGES]\n\ +The \"Type\" column indicates one of:\n\ +\tfile - ignored file\n\ +\tfunction - ignored function")); +} diff --git a/gdb/skip.h b/gdb/skip.h new file mode 100644 index 0000000..14aa4f3 --- /dev/null +++ b/gdb/skip.h @@ -0,0 +1,28 @@ +/* Header for skipping over uninteresting files and functions when debugging. + + Copyright (C) 2011 Free Software Foundation, Inc. + + 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 3 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, see <http://www.gnu.org/licenses/>. */ + +#if !defined (SKIP_H) +#define SKIP_H + +/* Returns 1 if the given pc is marked for skip and shouldn't be + stepped into. Otherwise, returns 0. */ +int function_pc_is_marked_for_skip (CORE_ADDR pc); + +/* Re-set the skip list after symbols have been reloaded. */ +void skip_re_set (void); + +#endif /* !defined (SKIP_H) */ diff --git a/gdb/stack.c b/gdb/stack.c index 003725a..9136daa 100644 --- a/gdb/stack.c +++ b/gdb/stack.c @@ -96,6 +96,12 @@ static void print_frame (struct frame_info *frame, int print_level, enum print_what print_what, int print_args, struct symtab_and_line sal); +static void set_last_displayed_sal (int valid, + struct program_space *pspace, + CORE_ADDR addr, + struct symtab *symtab, + int line); + /* Zero means do things normally; we are interacting directly with the user. One means print the full filename and linenumber when a frame is printed, and do so in a format emacs18/emacs19.22 can @@ -103,6 +109,14 @@ static void print_frame (struct frame_info *frame, int print_level, cases and in a slightly different syntax. */ int annotation_level = 0; + +/* These variables hold the last symtab and line we displayed to the user. + * This is where we insert a breakpoint or a skiplist entry by default. */ +static int last_displayed_sal_valid = 0; +static struct program_space *last_displayed_pspace = 0; +static CORE_ADDR last_displayed_addr = 0; +static struct symtab *last_displayed_symtab = 0; +static int last_displayed_line = 0; /* Return 1 if we should display the address in addition to the location, @@ -872,9 +886,9 @@ print_frame_info (struct frame_info *frame, int print_level, CORE_ADDR pc; if (get_frame_pc_if_available (frame, &pc)) - set_default_breakpoint (1, sal.pspace, pc, sal.symtab, sal.line); + set_last_displayed_sal (1, sal.pspace, pc, sal.symtab, sal.line); else - set_default_breakpoint (0, 0, 0, 0, 0); + set_last_displayed_sal (0, 0, 0, 0, 0); } annotate_frame_end (); @@ -882,6 +896,106 @@ print_frame_info (struct frame_info *frame, int print_level, gdb_flush (gdb_stdout); } +/* Remember the last symtab and line we displayed, which we use e.g. + * as the place to put a breakpoint when the `break' command is + * invoked with no arguments. */ + +static void +set_last_displayed_sal (int valid, struct program_space *pspace, + CORE_ADDR addr, struct symtab *symtab, + int line) +{ + last_displayed_sal_valid = valid; + last_displayed_pspace = pspace; + last_displayed_addr = addr; + last_displayed_symtab = symtab; + last_displayed_line = line; +} + +/* Forget the last sal we displayed. */ + +void +clear_last_displayed_sal (void) +{ + last_displayed_sal_valid = 0; + last_displayed_pspace = 0; + last_displayed_addr = 0; + last_displayed_symtab = 0; + last_displayed_line = 0; +} + +/* Is our record of the last sal we displayed valid? If not, + * the get_last_displayed_* functions will return NULL or 0, as + * appropriate. */ + +int +last_displayed_sal_is_valid (void) +{ + return last_displayed_sal_valid; +} + +/* Get the pspace of the last sal we displayed, if it's valid. */ + +struct program_space * +get_last_displayed_pspace (void) +{ + if (last_displayed_sal_valid) + return last_displayed_pspace; + return 0; +} + +/* Get the address of the last sal we displayed, if it's valid. */ + +CORE_ADDR +get_last_displayed_addr (void) +{ + if (last_displayed_sal_valid) + return last_displayed_addr; + return 0; +} + +/* Get the symtab of the last sal we displayed, if it's valid. */ + +struct symtab* +get_last_displayed_symtab (void) +{ + if (last_displayed_sal_valid) + return last_displayed_symtab; + return 0; +} + +/* Get the line of the last sal we displayed, if it's valid. */ + +int +get_last_displayed_line (void) +{ + if (last_displayed_sal_valid) + return last_displayed_line; + return 0; +} + +/* Get the last sal we displayed, if it's valid. */ + +void +get_last_displayed_sal (struct symtab_and_line *sal) +{ + if (last_displayed_sal_valid) + { + sal->pspace = last_displayed_pspace; + sal->pc = last_displayed_addr; + sal->symtab = last_displayed_symtab; + sal->line = last_displayed_line; + } + else + { + sal->pspace = 0; + sal->pc = 0; + sal->symtab = 0; + sal->line = 0; + } +} + + /* Attempt to obtain the FUNNAME, FUNLANG and optionally FUNCP of the function corresponding to FRAME. */ diff --git a/gdb/stack.h b/gdb/stack.h index 3cce623..312e8ff 100644 --- a/gdb/stack.h +++ b/gdb/stack.h @@ -38,4 +38,14 @@ void iterate_over_block_local_vars (struct block *block, iterate_over_block_arg_local_vars_cb cb, void *cb_data); +/* Get or set the last displayed symtab and line, which is, e.g. where we set a + * breakpoint when `break' is supplied with no arguments. */ +void clear_last_displayed_sal (void); +int last_displayed_sal_is_valid (void); +struct program_space* get_last_displayed_pspace (void); +CORE_ADDR get_last_displayed_addr (void); +struct symtab* get_last_displayed_symtab (void); +int get_last_displayed_line (void); +void get_last_displayed_sal (struct symtab_and_line *sal); + #endif /* #ifndef STACK_H */ diff --git a/gdb/symfile.c b/gdb/symfile.c index dfce380..a4eaad9 100644 --- a/gdb/symfile.c +++ b/gdb/symfile.c @@ -56,6 +56,7 @@ #include "elf-bfd.h" #include "solib.h" #include "remote.h" +#include "stack.h" #include <sys/types.h> #include <fcntl.h> @@ -2839,7 +2840,7 @@ clear_symtab_users (int add_flags) clear_displays (); if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) breakpoint_re_set (); - set_default_breakpoint (0, NULL, 0, 0, 0); + clear_last_displayed_sal (); clear_pc_function_cache (); observer_notify_new_objfile (NULL); diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index ceecad1..e5d8114 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,14 @@ +2011-10-06 Justin Lebar <justin.lebar@gmail.com> + + Add tests for skip command. + * testsuite/gdb.base/skip-solib-lib.c: New + * testsuite/gdb.base/skip-solib-main.c: New + * testsuite/gdb.base/skip-solib.exp: New + * testsuite/gdb.base/skip.c: New + * testsuite/gdb.base/skip.exp: New + * testsuite/gdb.base/skip1.c: New + * testsuite/gdb.base/Makefile.in: Adding new files. + 2011-10-31 Yao Qi <yao@codesourcery.com> Pedro Alves <pedro@codesourcery.com> diff --git a/gdb/testsuite/gdb.base/Makefile.in b/gdb/testsuite/gdb.base/Makefile.in index 72f1ba4..7ceb121 100644 --- a/gdb/testsuite/gdb.base/Makefile.in +++ b/gdb/testsuite/gdb.base/Makefile.in @@ -30,8 +30,8 @@ EXECUTABLES = a2-run advance all-types annota1 annota1-watch_thread_num \ sepsymtab.debug sepsymtab.stripped setshow setvar shmain shreloc \ sigall sigaltstack sigbpt sigchld siginfo siginfo-addr \ siginfo-infcall siginfo-obj signals signull sigrepeat sigstep \ - sizeof solib solib-corrupted solib-display-main solib-nodir \ - solib-overlap-main-0x40000000 solib-symbol-main solib-weak \ + sizeof skip skip-solib solib solib-corrupted solib-display-main + solib-nodir solib-overlap-main-0x40000000 solib-symbol-main solib-weak \ solib-weak-lib2 solib_sl so-impl-ld so-indr-cl \ stack-checking start step-break step-bt step-line step-resume-infcall \ step-test store structs-t* structs2 structs3 \ diff --git a/gdb/testsuite/gdb.base/skip-solib-lib.c b/gdb/testsuite/gdb.base/skip-solib-lib.c new file mode 100644 index 0000000..792cd01 --- /dev/null +++ b/gdb/testsuite/gdb.base/skip-solib-lib.c @@ -0,0 +1,11 @@ +/* Simple shared library */ + +int square(int num) +{ + return multiply(num, num); +} + +int multiply(int a, int b) +{ + return a * b; +} diff --git a/gdb/testsuite/gdb.base/skip-solib-main.c b/gdb/testsuite/gdb.base/skip-solib-main.c new file mode 100644 index 0000000..746bb5f --- /dev/null +++ b/gdb/testsuite/gdb.base/skip-solib-main.c @@ -0,0 +1,6 @@ +int square(int num); + +int main() +{ + return square(0); +} diff --git a/gdb/testsuite/gdb.base/skip-solib.exp b/gdb/testsuite/gdb.base/skip-solib.exp new file mode 100644 index 0000000..d6e25a4 --- /dev/null +++ b/gdb/testsuite/gdb.base/skip-solib.exp @@ -0,0 +1,130 @@ +# Copyright 2011 Free Software Foundation, Inc. + +# 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 3 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, see <http://www.gnu.org/licenses/>. + +# This file was written by Justin Lebar. (justin.lebar@gmail.com) + +# +# Tests skipping shared libraries. +# + +# This only works on GNU/Linux. +if { ![isnative] || [is_remote host] || ![istarget *-linux*] || [skip_shlib_tests]} { + continue +} + +set test "skip-solib" +set srcfile_main "${test}-main.c" +set binfile_main "${test}-test" +set srcfile_lib "${test}-lib.c" +set libname "lib${test}" +set binfile_lib ${objdir}/${subdir}/${libname}.so + +# +# Compile our program under test. The main program references a shared library +# libskip-solib.so, which contains two functions, square(), which is +# referenced by the main program, and multiply(), which is not referenced by +# the main program. +# + +if {[gdb_compile_shlib ${srcdir}/${subdir}/${srcfile_lib} ${binfile_lib} [list debug additional_flags=-fPIC -Wl,-soname,${libname}.so]] != ""} { + return -1 +} + +if {[gdb_compile "${srcdir}/${subdir}/${srcfile_main}" "${binfile_main}.o" object debug] != ""} { + return -1 +} + +if {[gdb_compile "${binfile_main}.o" "${binfile_main}" executable \ + [list debug "additional_flags=-L${objdir}/${subdir} -l${test} \ + -Wl,-rpath=${objdir}/${subdir}"]] != ""} { + return -1 +} + +gdb_start +clean_restart ${binfile_main} + +# +# At this point, if we try to skip the file ${srcfile_lib} or the function +# multiply(), we should get a prompt asking us if we want to enable the +# skip entry pending a shared library load. +# + +gdb_test "skip file ${srcfile_lib}" \ + "File ${srcfile_lib} will be skipped when stepping." \ + "ignoring file in solib" \ + "No source file named ${srcfile_lib}.* +Ignore file pending future shared library load.*" \ + "y" + +# +# Does info skip list this entry as pending? +# +gdb_test "info skip" \ + "Num\\s+Type\\s+Enb\\s+Address\\s+What\\s* +1\\s+file\\s+y\\s+\\s+${srcfile_lib} \\(PENDING\\)\\s*" \ + "info skip with pending file" + +if ![runto_main] { fail "skip tests suppressed" } + +# +# We shouldn't step into square(), since we skipped skip-solib-lib.c. +# +gdb_test "step" "" +gdb_test "bt" "#0\\s+main.*" "step after ignoring solib file." + +# +# Our entry should no longer be pending. Note that we unfortunately need to do +# at least one step before the entry will be unmarked as pending. +# +gdb_test "info skip" \ + "Num\\s+Type\\s+Enb\\s+Address\\s+What\\s* +1\\s+file\\s+y\\s+\\s+.*${srcfile_lib}\\s*" \ + "info skip with pending file" + +# +# Now restart gdb and testing ignoring of a function inside a solib. +# +gdb_exit +gdb_start +clean_restart ${binfile_main} + +gdb_test "skip function multiply" \ + "Function multiply will be skipped when stepping, pending shared library load." \ + "ignoring function in solib" \ +"No function found named multiply..* +Ignore function pending future shared library load.*" \ + "y" + +if ![runto_main] { fail "skip tests suppressed" } + +# +# Our first step should take us into square. +# +gdb_test "step" "square.*" + +# +# Now our entry should no longer be pending. +# +gdb_test "info skip" \ + "Num\\s+Type\\s+Enb\\s+Address\\s+What\\s* +1\\s+function\\s+y\\s+0x\[0-9a-f\]+\\s+multiply at .*${srcfile_lib}:.*\\s*" \ + "skip should no longer be pending." + +# +# This step shouldn't go into multiply -- we should skip it and go on to the +# last line of square. +# +gdb_test "step" "" +gdb_test "bt" "#0\\s+square.*" diff --git a/gdb/testsuite/gdb.base/skip.c b/gdb/testsuite/gdb.base/skip.c new file mode 100644 index 0000000..565ba93 --- /dev/null +++ b/gdb/testsuite/gdb.base/skip.c @@ -0,0 +1,13 @@ +int foo(); +int bar(); +int baz(int, int); + +int main() +{ + return baz(foo(), bar()); +} + +int foo() +{ + return 0; +} diff --git a/gdb/testsuite/gdb.base/skip.exp b/gdb/testsuite/gdb.base/skip.exp new file mode 100644 index 0000000..7c699eb --- /dev/null +++ b/gdb/testsuite/gdb.base/skip.exp @@ -0,0 +1,179 @@ +# Copyright 2011 Free Software Foundation, Inc. + +# 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 3 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, see <http://www.gnu.org/licenses/>. + +# This file was written by Justin Lebar. (justin.lebar@gmail.com) + +if { [prepare_for_testing skip.exp "skip" \ + {skip.c skip1.c } \ + {debug nowarnings}] } { + return -1 +} + +set srcfile skip.c +set srcfile1 skip1.c + +# +# Right after we start gdb, there's no default file or function to skip. +# +gdb_test "skip file" "No default file now." +gdb_test "skip function" "No default function now." +gdb_test "skip" "No default function now." + +if ![runto_main] { fail "skip tests suppressed" } + +# +# Test |info skip| with an empty skiplist. +# +gdb_test "info skip" "Not skipping any files or functions\." "info skip empty" + +# +# Create a skiplist entry for the current file and function. +# +gdb_test "skip file" "File .*$srcfile will be skipped when stepping\." +gdb_test "skip" "Function main at .* will be skipped when stepping\." + +# +# Create a skiplist entry for a specified file and function. +# +gdb_test "skip file skip1.c" "File .*$srcfile1 will be skipped when stepping\." +gdb_test "skip function baz" "Function baz at .* will be skipped when stepping\." + +# +# Test bad skiplist entry modification commands +# +gdb_test "skip enable 999" "No skiplist entries found with number 999." +gdb_test "skip disable 999" "No skiplist entries found with number 999." +gdb_test "skip delete 999" "No skiplist entries found with number 999." +gdb_test "skip enable a" "Args must be numbers or '\\$' variables." +gdb_test "skip disable a" "Args must be numbers or '\\$' variables." +gdb_test "skip delete a" "Args must be numbers or '\\$' variables." + +# +# Ask for info on a skiplist entry which doesn't exist. +# +gdb_test "info skip 999" "No skiplist entries found with number 999." + +# +# Does |info skip| look right? +# +gdb_test "info skip" \ + "Num\\s+Type\\s+Enb\\s+Address\\s+What\\s* +1\\s+file\\s+y\\s+.*$srcfile\\s* +2\\s+function\\s+y\\s+0x\[0-9a-f\]+ main at .*$srcfile:\[0-9\]+\\s* +3\\s+file\\s+y\\s+.*$srcfile1\\s* +4\\s+function\\s+y\\s+0x\[0-9a-f\]+ baz at .*$srcfile1:\[0-9\]+\\s*" + +# +# Right now, we have an outstanding skiplist entry on both source +# files, so when we step into the first line in main(), we should step +# right over it and go to the second line of main(). +# + +if ![runto_main] { fail "skip tests suppressed" } +gdb_test "step" +gdb_test "bt" "\\s*\\#0\\s+main.*" "step after all ignored" + +# +# Now remove skip.c from the skiplist. Our first step should take us +# into foo(), and our second step should take us to the next line in +# main(). +# +gdb_test "skip delete 1" +# Check that entry 1 is missing from |info skip| +gdb_test "info skip" \ + "Num\\s+Type\\s+Enb\\s+Address\\s+What\\s* +2\\s+function\\s+y\\s+0x\[0-9a-f\]+ main at .*$srcfile:\[0-9\]+\\s* +3\\s+file\\s+y\\s+.*$srcfile1\\s* +4\\s+function\\s+y\\s+0x\[0-9a-f\]+ baz at .*$srcfile1:\[0-9\]+\\s*" + +if ![runto_main] { fail "skip tests suppressed" } +gdb_test "step" "foo \\(\\) at.*" "step after deleting 1 (1)" +gdb_test "step"; # Return from foo() +gdb_test "step" "main \\(\\) at.*" "step after deleting 1 (2)" + +# +# Now disable the skiplist entry for skip1.c. We should now +# step into foo(), then into bar(), but not into baz(). +# +gdb_test "skip disable 3" +# Is entry 3 disabled in |info skip|? +gdb_test "info skip 3" ".*\\n3\\s+file\\s+n.*" \ + "info skip shows entry as disabled" + +if ![runto_main] { fail "skip tests suppressed" } +gdb_test "step" "bar \\(\\) at.*" "step after disabling 3 (1)" +gdb_test "step"; # Return from foo() +gdb_test "step" "foo \\(\\) at.*" "step after disabling 3 (2)" +gdb_test "step"; # Return from bar() +gdb_test "step" "main \\(\\) at.*" "step after disabling 3 (3)" + +# +# Enable skiplist entry 3 and make sure we step over it like before. +# +gdb_test "skip enable 3" +# Is entry 3 enabled in |info skip|? +gdb_test "info skip 3" ".*\\n3\\s+file\\s+y.*" \ + "info skip shows entry as enabled" +if ![runto_main] { fail "skip tests suppressed" } +gdb_test "step" "foo \\(\\) at.*" "step after deleting 1 (1)" +gdb_test "step"; # Return from foo() +gdb_test "step" "main \\(\\) at.*" "step after deleting 1 (2)" + +gdb_test "skip disable" +gdb_test "info skip" \ + "Num\\s+Type\\s+Enb\\s+Address\\s+What\\s* +2\\s+function\\s+n\\s+0x\[0-9a-f\]+ main at .*$srcfile:\[0-9\]+\\s* +3\\s+file\\s+n\\s+.*$srcfile1\\s* +4\\s+function\\s+n\\s+0x\[0-9a-f\]+ baz at .*$srcfile1:\[0-9\]+\\s*" \ + "info skip after disabling all" + +gdb_test "skip enable" +gdb_test "info skip" \ + "Num\\s+Type\\s+Enb\\s+Address\\s+What\\s* +2\\s+function\\s+y\\s+0x\[0-9a-f\]+ main at .*$srcfile:\[0-9\]+\\s* +3\\s+file\\s+y\\s+.*$srcfile1\\s* +4\\s+function\\s+y\\s+0x\[0-9a-f\]+ baz at .*$srcfile1:\[0-9\]+\\s*" \ + "info skip after enabling all" + +gdb_test "skip disable 4 2-3" +gdb_test "info skip" \ + "Num\\s+Type\\s+Enb\\s+Address\\s+What\\s* +2\\s+function\\s+n\\s+0x\[0-9a-f\]+ main at .*$srcfile:\[0-9\]+\\s* +3\\s+file\\s+n\\s+.*$srcfile1\\s* +4\\s+function\\s+n\\s+0x\[0-9a-f\]+ baz at .*$srcfile1:\[0-9\]+\\s*" \ + "info skip after disabling 4 2-3" + +gdb_test "skip enable 2-3" +gdb_test "info skip" \ + "Num\\s+Type\\s+Enb\\s+Address\\s+What\\s* +2\\s+function\\s+y\\s+0x\[0-9a-f\]+ main at .*$srcfile:\[0-9\]+\\s* +3\\s+file\\s+y\\s+.*$srcfile1\\s* +4\\s+function\\s+n\\s+0x\[0-9a-f\]+ baz at .*$srcfile1:\[0-9\]+\\s*" \ + "info skip after enabling 2-3" + +gdb_test "info skip 2-3" \ + "Num\\s+Type\\s+Enb\\s+Address\\s+What\\s* +2\\s+function\\s+y\\s+0x\[0-9a-f\]+ main at .*$srcfile:\[0-9\]+\\s* +3\\s+file\\s+y\\s+.*$srcfile1\\s*" \ + "info skip 2-3" + +gdb_test "skip delete 2 3" +gdb_test "info skip" \ + "4\\s+function\\s+n\\s+0x\[0-9a-f\]+ baz at .*$srcfile1:\[0-9\]+\\s*" \ + "info skip after deleting 2 3" + +gdb_test "skip delete" +gdb_test "info skip" "Not skipping any files or functions\." \ + "info skip after deleting all" diff --git a/gdb/testsuite/gdb.base/skip1.c b/gdb/testsuite/gdb.base/skip1.c new file mode 100644 index 0000000..2dab5c3 --- /dev/null +++ b/gdb/testsuite/gdb.base/skip1.c @@ -0,0 +1,9 @@ +int bar() +{ + return 1; +} + +int baz(int a, int b) +{ + return a + b; +} |