From patchwork Fri Jun 14 23:01:39 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Burgess X-Patchwork-Id: 33143 Received: (qmail 15113 invoked by alias); 14 Jun 2019 23:01:52 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Delivered-To: mailing list gdb-patches@sourceware.org Received: (qmail 15029 invoked by uid 89); 14 Jun 2019 23:01:51 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-25.6 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, RCVD_IN_DNSWL_NONE, SPF_PASS autolearn=ham version=3.3.1 spammy=beg X-HELO: mail-wm1-f65.google.com Received: from mail-wm1-f65.google.com (HELO mail-wm1-f65.google.com) (209.85.128.65) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Fri, 14 Jun 2019 23:01:49 +0000 Received: by mail-wm1-f65.google.com with SMTP id a15so3838238wmj.5 for ; Fri, 14 Jun 2019 16:01:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=embecosm.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references; bh=j3VjzNXHZpNyUdR20dLttArkQJDDreY9RInB9/CTvHQ=; b=Oz8qizP6bj/zcq9oa6SdUJt4KnPcxShyVRpfyHId91+f5CTf9WV4S5nORK/yp1pxj5 TS7cyowNes1vtHeZmdxO3cklYmedhx4jJnx5LfE6QkVaxRqf+LLXrXnVzyPJ9PbKaAvL xoiYkkBvbN1fWB1tXiKtJ3LG3+mGaz716Ayu/+9n3176pmQoxAPzsO2vY7gXWvWRp/+d fEpeqMh3vQpOBhc5eOPMe1k8Cay70hv8eF82MdHdx+ZKL3NFiBLozAjQJzHyLvsxmDSq 8Pv77LZmrszZNnsREhTiKeKn05MTJwlH4g/czs+MRosgNS8MFm6xh/iJkJYpGRl3u5Ow Ch2g== Return-Path: Received: from localhost (host86-180-62-212.range86-180.btcentralplus.com. [86.180.62.212]) by smtp.gmail.com with ESMTPSA id v13sm2628227wmj.46.2019.06.14.16.01.46 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 14 Jun 2019 16:01:46 -0700 (PDT) From: Andrew Burgess To: gdb-patches@sourceware.org Cc: Andrew Burgess Subject: [PATCH 3/4] gdb: Remove an update of current_source_line and current_source_symtab Date: Sat, 15 Jun 2019 00:01:39 +0100 Message-Id: <2f722983def5057ebf0168f14d5089a77d4874ea.1560553051.git.andrew.burgess@embecosm.com> In-Reply-To: References: In-Reply-To: References: <87v9x8mdkf.fsf@tromey.com> X-IsSubscribed: yes While reviewing some of the annotation code I noticed that identify_source_line (in source.c) sets current_source_line, current_source_symtab, and also calls clear_lines_listed_range. This seems a little strange, identify_source_line is really a wrapper around annotate_source, and is only called when annotation_level is greater than 0 (so annotations are turned on). It seems weird (to me) that when annotations are on we update GDB's idea of the "current" line/symtab, but when they are off we don't, given that annotations are really about communicating GDB's state to a user (GUI) and surely shouldn't be changing GDB's behaviour. This commit removes from identify_source_line all of the setting of current line/symtab and the call to clear_lines_listed_range, after doing this GDB still passes all tests, so I don't believe these lines were actually required. With this code removed identify_source_line is only a wrapper around annotate_source, so I moved identify_source_line to annotate.c and renamed it to annotate_source_line. gdb/ChangeLog: * annotate.c: Add 'source.h' and 'objfiles.h' includes. (annotate_source): Make static. (annotate_source_line): Moved from source.c and renamed from identify_source_line. Update the return type. * annotate.h (annotate_source): Delete declaration. (annotate_source_line): Declaration moved from source.h, and renamed from identify_source_line. Return type updated. * source.c (identify_source_line): Moved to annotate.c and renamed to annotate_source_line. (info_line_command): Remove check of annotation_level. * source.h (identify_source_line): Move declaration to annotate.h and rename to annotate_source_line. * stack.c: Add 'annotate.h' include. (print_frame_info): Remove check of annotation_level before calling annotate_source_line. --- gdb/ChangeLog | 18 ++++++++++++++++++ gdb/annotate.c | 29 ++++++++++++++++++++++++++++- gdb/annotate.h | 13 +++++++++++-- gdb/source.c | 27 ++------------------------- gdb/source.h | 11 ----------- gdb/stack.c | 7 +++---- 6 files changed, 62 insertions(+), 43 deletions(-) diff --git a/gdb/annotate.c b/gdb/annotate.c index 84940ff031a..84f8129b22d 100644 --- a/gdb/annotate.c +++ b/gdb/annotate.c @@ -26,6 +26,8 @@ #include "inferior.h" #include "infrun.h" #include "top.h" +#include "source.h" +#include "objfiles.h" /* Prototypes for local functions. */ @@ -417,7 +419,7 @@ annotate_arg_end (void) printf_filtered (("\n\032\032arg-end\n")); } -void +static void annotate_source (const char *filename, int line, int character, int mid, struct gdbarch *gdbarch, CORE_ADDR pc) { @@ -430,6 +432,31 @@ annotate_source (const char *filename, int line, int character, int mid, mid ? "middle" : "beg", paddress (gdbarch, pc)); } +/* See annotate.h. */ + +bool +annotate_source_line (struct symtab *s, int line, int mid_statement, + CORE_ADDR pc) +{ + if (annotation_level > 0) + { + if (s->line_charpos == nullptr) + open_source_file_with_line_charpos (s); + if (s->fullname == nullptr) + return false; + /* Don't index off the end of the line_charpos array. */ + if (line > s->nlines) + return false; + + annotate_source (s->fullname, line, s->line_charpos[line - 1], + mid_statement, get_objfile_arch (SYMTAB_OBJFILE (s)), + pc); + return true; + } + return false; +} + + void annotate_frame_begin (int level, struct gdbarch *gdbarch, CORE_ADDR pc) { diff --git a/gdb/annotate.h b/gdb/annotate.h index ff10d459465..9683b7e09ac 100644 --- a/gdb/annotate.h +++ b/gdb/annotate.h @@ -87,8 +87,17 @@ struct annotate_arg_emitter DISABLE_COPY_AND_ASSIGN (annotate_arg_emitter); }; -extern void annotate_source (const char *, int, int, int, - struct gdbarch *, CORE_ADDR); +/* If annotations are turned on then print annotation describing the full + name of the source file S and the line number LINE and its corresponding + character position. + + MID_STATEMENT is nonzero if the PC is not at the beginning of that + line. + + Return true if successful, false if the file could not be found or + annotations are turned off. */ +extern bool annotate_source_line (struct symtab *s, int line, + int mid_statement, CORE_ADDR pc); extern void annotate_frame_begin (int, struct gdbarch *, CORE_ADDR); extern void annotate_function_call (void); diff --git a/gdb/source.c b/gdb/source.c index dae1801c136..dec5a2f84ba 100644 --- a/gdb/source.c +++ b/gdb/source.c @@ -1212,29 +1212,6 @@ open_source_file_with_line_charpos (struct symtab *s) -/* See source.h. */ - -int -identify_source_line (struct symtab *s, int line, int mid_statement, - CORE_ADDR pc) -{ - if (s->line_charpos == nullptr) - open_source_file_with_line_charpos (s); - if (s->fullname == 0) - return 0; - if (line > s->nlines) - /* Don't index off the end of the line_charpos array. */ - return 0; - annotate_source (s->fullname, line, s->line_charpos[line - 1], - mid_statement, get_objfile_arch (SYMTAB_OBJFILE (s)), pc); - - current_source_line = line; - current_source_symtab = s; - clear_lines_listed_range (); - return 1; -} - - /* Print source lines from the file of symtab S, starting with line number LINE and stopping before line number STOPLINE. */ @@ -1519,8 +1496,8 @@ info_line_command (const char *arg, int from_tty) /* If this is the only line, show the source code. If it could not find the file, don't do anything special. */ - if (annotation_level && sals.size () == 1) - identify_source_line (sal.symtab, sal.line, 0, start_pc); + if (sals.size () == 1) + annotate_source_line (sal.symtab, sal.line, 0, start_pc); } else /* Is there any case in which we get here, and have an address diff --git a/gdb/source.h b/gdb/source.h index 7ea826acae5..1c45405774b 100644 --- a/gdb/source.h +++ b/gdb/source.h @@ -127,17 +127,6 @@ extern void clear_current_source_symtab_and_line (void); /* Add a source path substitution rule. */ extern void add_substitute_path_rule (char *, char *); -/* Print text describing the full name of the source file S - and the line number LINE and its corresponding character position. - The text starts with two Ctrl-z so that the Emacs-GDB interface - can easily find it. - - MID_STATEMENT is nonzero if the PC is not at the beginning of that line. - - Return 1 if successful, 0 if could not find the file. */ -extern int identify_source_line (struct symtab *s, int line, - int mid_statement, CORE_ADDR pc); - /* Flags passed as 4th argument to print_source_lines. */ enum print_source_lines_flag { diff --git a/gdb/stack.c b/gdb/stack.c index 547e82bbfb2..f471efe3df7 100644 --- a/gdb/stack.c +++ b/gdb/stack.c @@ -47,6 +47,7 @@ #include "linespec.h" #include "cli/cli-utils.h" #include "objfiles.h" +#include "annotate.h" #include "symfile.h" #include "extension.h" @@ -962,13 +963,11 @@ print_frame_info (const frame_print_options &fp_opts, if (source_print && sal.symtab) { - int done = 0; int mid_statement = ((print_what == SRC_LINE) && frame_show_address (frame, sal)); + bool done = annotate_source_line (sal.symtab, sal.line, mid_statement, + get_frame_pc (frame)); - if (annotation_level) - done = identify_source_line (sal.symtab, sal.line, mid_statement, - get_frame_pc (frame)); if (!done) { if (deprecated_print_frame_info_listing_hook)