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diff --git a/share/doc/gdb/GDB_002fMI-Program-Execution.html b/share/doc/gdb/GDB_002fMI-Program-Execution.html new file mode 100644 index 0000000..004d991 --- /dev/null +++ b/share/doc/gdb/GDB_002fMI-Program-Execution.html @@ -0,0 +1,638 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1988-2023 Free Software Foundation, Inc. + +Permission is granted to copy, distribute and/or modify this document +under the terms of the GNU Free Documentation License, Version 1.3 or +any later version published by the Free Software Foundation; with the +Invariant Sections being "Free Software" and "Free Software Needs +Free Documentation", with the Front-Cover Texts being "A GNU Manual," +and with the Back-Cover Texts as in (a) below. + +(a) The FSF's Back-Cover Text is: "You are free to copy and modify +this GNU Manual. Buying copies from GNU Press supports the FSF in +developing GNU and promoting software freedom." --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>Debugging with GDB: GDB/MI Program Execution</title> + +<meta name="description" content="Debugging with GDB: GDB/MI Program Execution"> +<meta name="keywords" content="Debugging with GDB: GDB/MI Program Execution"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="GDB_002fMI.html#GDB_002fMI" rel="up" title="GDB/MI"> +<link href="GDB_002fMI-Stack-Manipulation.html#GDB_002fMI-Stack-Manipulation" rel="next" title="GDB/MI Stack Manipulation"> +<link href="GDB_002fMI-Ada-Tasking-Commands.html#GDB_002fMI-Ada-Tasking-Commands" rel="previous" title="GDB/MI Ada Tasking Commands"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +div.smalllisp {margin-left: 3.2em} +kbd {font-style:oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="GDB_002fMI-Program-Execution"></a> +<div class="header"> +<p> +Next: <a href="GDB_002fMI-Stack-Manipulation.html#GDB_002fMI-Stack-Manipulation" accesskey="n" rel="next">GDB/MI Stack Manipulation</a>, Previous: <a href="GDB_002fMI-Ada-Tasking-Commands.html#GDB_002fMI-Ada-Tasking-Commands" accesskey="p" rel="previous">GDB/MI Ada Tasking Commands</a>, Up: <a href="GDB_002fMI.html#GDB_002fMI" accesskey="u" rel="up">GDB/MI</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> +</div> +<hr> +<a name="GDB_002fMI-Program-Execution-1"></a> +<h3 class="section">27.13 <small>GDB/MI</small> Program Execution</h3> + +<p>These are the asynchronous commands which generate the out-of-band +record ‘<samp>*stopped</samp>’. Currently <small>GDB</small> only really executes +asynchronously with remote targets and this interaction is mimicked in +other cases. +</p> +<a name="The-_002dexec_002dcontinue-Command"></a> +<h4 class="subheading">The <code>-exec-continue</code> Command</h4> +<a name="index-_002dexec_002dcontinue"></a> + +<a name="Synopsis-30"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -exec-continue [--reverse] [--all|--thread-group N] +</pre></div> + +<p>Resumes the execution of the inferior program, which will continue +to execute until it reaches a debugger stop event. If the +‘<samp>--reverse</samp>’ option is specified, execution resumes in reverse until +it reaches a stop event. Stop events may include +</p><ul> +<li> breakpoints or watchpoints +</li><li> signals or exceptions +</li><li> the end of the process (or its beginning under ‘<samp>--reverse</samp>’) +</li><li> the end or beginning of a replay log if one is being used. +</li></ul> +<p>In all-stop mode (see <a href="All_002dStop-Mode.html#All_002dStop-Mode">All-Stop Mode</a>), may resume only one thread, or all threads, depending on the +value of the ‘<samp>scheduler-locking</samp>’ variable. If ‘<samp>--all</samp>’ is +specified, all threads (in all inferiors) will be resumed. The ‘<samp>--all</samp>’ option is +ignored in all-stop mode. If the ‘<samp>--thread-group</samp>’ options is +specified, then all threads in that thread group are resumed. +</p> +<a name="GDB-Command-29"></a> +<h4 class="subsubheading"><small>GDB</small> Command</h4> + +<p>The corresponding <small>GDB</small> corresponding is ‘<samp>continue</samp>’. +</p> +<a name="Example-29"></a> +<h4 class="subsubheading">Example</h4> + +<div class="smallexample"> +<pre class="smallexample">-exec-continue +^running +(gdb) +@Hello world +*stopped,reason="breakpoint-hit",disp="keep",bkptno="2",frame={ +func="foo",args=[],file="hello.c",fullname="/home/foo/bar/hello.c", +line="13",arch="i386:x86_64"} +(gdb) +</pre></div> + +<p>For a ‘<samp>breakpoint-hit</samp>’ stopped reason, when the breakpoint +encountered has multiple locations, the field ‘<samp>bkptno</samp>’ is +followed by the field ‘<samp>locno</samp>’. +</p> +<div class="smallexample"> +<pre class="smallexample">-exec-continue +^running +(gdb) +@Hello world +*stopped,reason="breakpoint-hit",disp="keep",bkptno="2",locno="3",frame={ +func="foo",args=[],file="hello.c",fullname="/home/foo/bar/hello.c", +line="13",arch="i386:x86_64"} +(gdb) +</pre></div> + +<a name="The-_002dexec_002dfinish-Command"></a> +<h4 class="subheading">The <code>-exec-finish</code> Command</h4> +<a name="index-_002dexec_002dfinish"></a> + +<a name="Synopsis-31"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -exec-finish [--reverse] +</pre></div> + +<p>Resumes the execution of the inferior program until the current +function is exited. Displays the results returned by the function. +If the ‘<samp>--reverse</samp>’ option is specified, resumes the reverse +execution of the inferior program until the point where current +function was called. +</p> +<a name="GDB-Command-30"></a> +<h4 class="subsubheading"><small>GDB</small> Command</h4> + +<p>The corresponding <small>GDB</small> command is ‘<samp>finish</samp>’. +</p> +<a name="Example-30"></a> +<h4 class="subsubheading">Example</h4> + +<p>Function returning <code>void</code>. +</p> +<div class="smallexample"> +<pre class="smallexample">-exec-finish +^running +(gdb) +@hello from foo +*stopped,reason="function-finished",frame={func="main",args=[], +file="hello.c",fullname="/home/foo/bar/hello.c",line="7",arch="i386:x86_64"} +(gdb) +</pre></div> + +<p>Function returning other than <code>void</code>. The name of the internal +<small>GDB</small> variable storing the result is printed, together with the +value itself. +</p> +<div class="smallexample"> +<pre class="smallexample">-exec-finish +^running +(gdb) +*stopped,reason="function-finished",frame={addr="0x000107b0",func="foo", +args=[{name="a",value="1"],{name="b",value="9"}}, +file="recursive2.c",fullname="/home/foo/bar/recursive2.c",line="14", +arch="i386:x86_64"}, +gdb-result-var="$1",return-value="0" +(gdb) +</pre></div> + + +<a name="The-_002dexec_002dinterrupt-Command"></a> +<h4 class="subheading">The <code>-exec-interrupt</code> Command</h4> +<a name="index-_002dexec_002dinterrupt"></a> + +<a name="Synopsis-32"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -exec-interrupt [--all|--thread-group N] +</pre></div> + +<p>Interrupts the background execution of the target. Note how the token +associated with the stop message is the one for the execution command +that has been interrupted. The token for the interrupt itself only +appears in the ‘<samp>^done</samp>’ output. If the user is trying to +interrupt a non-running program, an error message will be printed. +</p> +<p>Note that when asynchronous execution is enabled, this command is +asynchronous just like other execution commands. That is, first the +‘<samp>^done</samp>’ response will be printed, and the target stop will be +reported after that using the ‘<samp>*stopped</samp>’ notification. +</p> +<p>In non-stop mode, only the context thread is interrupted by default. +All threads (in all inferiors) will be interrupted if the +‘<samp>--all</samp>’ option is specified. If the ‘<samp>--thread-group</samp>’ +option is specified, all threads in that group will be interrupted. +</p> +<a name="GDB-Command-31"></a> +<h4 class="subsubheading"><small>GDB</small> Command</h4> + +<p>The corresponding <small>GDB</small> command is ‘<samp>interrupt</samp>’. +</p> +<a name="Example-31"></a> +<h4 class="subsubheading">Example</h4> + +<div class="smallexample"> +<pre class="smallexample">(gdb) +111-exec-continue +111^running + +(gdb) +222-exec-interrupt +222^done +(gdb) +111*stopped,signal-name="SIGINT",signal-meaning="Interrupt", +frame={addr="0x00010140",func="foo",args=[],file="try.c", +fullname="/home/foo/bar/try.c",line="13",arch="i386:x86_64"} +(gdb) + +(gdb) +-exec-interrupt +^error,msg="mi_cmd_exec_interrupt: Inferior not executing." +(gdb) +</pre></div> + +<a name="The-_002dexec_002djump-Command"></a> +<h4 class="subheading">The <code>-exec-jump</code> Command</h4> +<a name="index-_002dexec_002djump"></a> + +<a name="Synopsis-33"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -exec-jump <var>locspec</var> +</pre></div> + +<p>Resumes execution of the inferior program at the address to +which <var>locspec</var> resolves. See <a href="Location-Specifications.html#Location-Specifications">Location Specifications</a>, +for a description of the different forms of <var>locspec</var>. +</p> +<a name="GDB-Command-32"></a> +<h4 class="subsubheading"><small>GDB</small> Command</h4> + +<p>The corresponding <small>GDB</small> command is ‘<samp>jump</samp>’. +</p> +<a name="Example-32"></a> +<h4 class="subsubheading">Example</h4> + +<div class="smallexample"> +<pre class="smallexample">-exec-jump foo.c:10 +*running,thread-id="all" +^running +</pre></div> + + +<a name="The-_002dexec_002dnext-Command"></a> +<h4 class="subheading">The <code>-exec-next</code> Command</h4> +<a name="index-_002dexec_002dnext"></a> + +<a name="Synopsis-34"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -exec-next [--reverse] +</pre></div> + +<p>Resumes execution of the inferior program, stopping when the beginning +of the next source line is reached. +</p> +<p>If the ‘<samp>--reverse</samp>’ option is specified, resumes reverse execution +of the inferior program, stopping at the beginning of the previous +source line. If you issue this command on the first line of a +function, it will take you back to the caller of that function, to the +source line where the function was called. +</p> + +<a name="GDB-Command-33"></a> +<h4 class="subsubheading"><small>GDB</small> Command</h4> + +<p>The corresponding <small>GDB</small> command is ‘<samp>next</samp>’. +</p> +<a name="Example-33"></a> +<h4 class="subsubheading">Example</h4> + +<div class="smallexample"> +<pre class="smallexample">-exec-next +^running +(gdb) +*stopped,reason="end-stepping-range",line="8",file="hello.c" +(gdb) +</pre></div> + + +<a name="The-_002dexec_002dnext_002dinstruction-Command"></a> +<h4 class="subheading">The <code>-exec-next-instruction</code> Command</h4> +<a name="index-_002dexec_002dnext_002dinstruction"></a> + +<a name="Synopsis-35"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -exec-next-instruction [--reverse] +</pre></div> + +<p>Executes one machine instruction. If the instruction is a function +call, continues until the function returns. If the program stops at an +instruction in the middle of a source line, the address will be +printed as well. +</p> +<p>If the ‘<samp>--reverse</samp>’ option is specified, resumes reverse execution +of the inferior program, stopping at the previous instruction. If the +previously executed instruction was a return from another function, +it will continue to execute in reverse until the call to that function +(from the current stack frame) is reached. +</p> +<a name="GDB-Command-34"></a> +<h4 class="subsubheading"><small>GDB</small> Command</h4> + +<p>The corresponding <small>GDB</small> command is ‘<samp>nexti</samp>’. +</p> +<a name="Example-34"></a> +<h4 class="subsubheading">Example</h4> + +<div class="smallexample"> +<pre class="smallexample">(gdb) +-exec-next-instruction +^running + +(gdb) +*stopped,reason="end-stepping-range", +addr="0x000100d4",line="5",file="hello.c" +(gdb) +</pre></div> + + +<a name="The-_002dexec_002dreturn-Command"></a> +<h4 class="subheading">The <code>-exec-return</code> Command</h4> +<a name="index-_002dexec_002dreturn"></a> + +<a name="Synopsis-36"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -exec-return +</pre></div> + +<p>Makes current function return immediately. Doesn’t execute the inferior. +Displays the new current frame. +</p> +<a name="GDB-Command-35"></a> +<h4 class="subsubheading"><small>GDB</small> Command</h4> + +<p>The corresponding <small>GDB</small> command is ‘<samp>return</samp>’. +</p> +<a name="Example-35"></a> +<h4 class="subsubheading">Example</h4> + +<div class="smallexample"> +<pre class="smallexample">(gdb) +200-break-insert callee4 +200^done,bkpt={number="1",addr="0x00010734", +file="../../../devo/gdb/testsuite/gdb.mi/basics.c",line="8"} +(gdb) +000-exec-run +000^running +(gdb) +000*stopped,reason="breakpoint-hit",disp="keep",bkptno="1", +frame={func="callee4",args=[], +file="../../../devo/gdb/testsuite/gdb.mi/basics.c", +fullname="/home/foo/bar/devo/gdb/testsuite/gdb.mi/basics.c",line="8", +arch="i386:x86_64"} +(gdb) +205-break-delete +205^done +(gdb) +111-exec-return +111^done,frame={level="0",func="callee3", +args=[{name="strarg", +value="0x11940 \"A string argument.\""}], +file="../../../devo/gdb/testsuite/gdb.mi/basics.c", +fullname="/home/foo/bar/devo/gdb/testsuite/gdb.mi/basics.c",line="18", +arch="i386:x86_64"} +(gdb) +</pre></div> + + +<a name="The-_002dexec_002drun-Command"></a> +<h4 class="subheading">The <code>-exec-run</code> Command</h4> +<a name="index-_002dexec_002drun"></a> + +<a name="Synopsis-37"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -exec-run [ --all | --thread-group N ] [ --start ] +</pre></div> + +<p>Starts execution of the inferior from the beginning. The inferior +executes until either a breakpoint is encountered or the program +exits. In the latter case the output will include an exit code, if +the program has exited exceptionally. +</p> +<p>When neither the ‘<samp>--all</samp>’ nor the ‘<samp>--thread-group</samp>’ option +is specified, the current inferior is started. If the +‘<samp>--thread-group</samp>’ option is specified, it should refer to a thread +group of type ‘<samp>process</samp>’, and that thread group will be started. +If the ‘<samp>--all</samp>’ option is specified, then all inferiors will be started. +</p> +<p>Using the ‘<samp>--start</samp>’ option instructs the debugger to stop +the execution at the start of the inferior’s main subprogram, +following the same behavior as the <code>start</code> command +(see <a href="Starting.html#Starting">Starting</a>). +</p> +<a name="GDB-Command-36"></a> +<h4 class="subsubheading"><small>GDB</small> Command</h4> + +<p>The corresponding <small>GDB</small> command is ‘<samp>run</samp>’. +</p> +<a name="Examples-2"></a> +<h4 class="subsubheading">Examples</h4> + +<div class="smallexample"> +<pre class="smallexample">(gdb) +-break-insert main +^done,bkpt={number="1",addr="0x0001072c",file="recursive2.c",line="4"} +(gdb) +-exec-run +^running +(gdb) +*stopped,reason="breakpoint-hit",disp="keep",bkptno="1", +frame={func="main",args=[],file="recursive2.c", +fullname="/home/foo/bar/recursive2.c",line="4",arch="i386:x86_64"} +(gdb) +</pre></div> + +<p>Program exited normally: +</p> +<div class="smallexample"> +<pre class="smallexample">(gdb) +-exec-run +^running +(gdb) +x = 55 +*stopped,reason="exited-normally" +(gdb) +</pre></div> + +<p>Program exited exceptionally: +</p> +<div class="smallexample"> +<pre class="smallexample">(gdb) +-exec-run +^running +(gdb) +x = 55 +*stopped,reason="exited",exit-code="01" +(gdb) +</pre></div> + +<p>Another way the program can terminate is if it receives a signal such as +<code>SIGINT</code>. In this case, <small>GDB/MI</small> displays this: +</p> +<div class="smallexample"> +<pre class="smallexample">(gdb) +*stopped,reason="exited-signalled",signal-name="SIGINT", +signal-meaning="Interrupt" +</pre></div> + + + + +<a name="The-_002dexec_002dstep-Command"></a> +<h4 class="subheading">The <code>-exec-step</code> Command</h4> +<a name="index-_002dexec_002dstep"></a> + +<a name="Synopsis-38"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -exec-step [--reverse] +</pre></div> + +<p>Resumes execution of the inferior program, stopping when the beginning +of the next source line is reached, if the next source line is not a +function call. If it is, stop at the first instruction of the called +function. If the ‘<samp>--reverse</samp>’ option is specified, resumes reverse +execution of the inferior program, stopping at the beginning of the +previously executed source line. +</p> +<a name="GDB-Command-37"></a> +<h4 class="subsubheading"><small>GDB</small> Command</h4> + +<p>The corresponding <small>GDB</small> command is ‘<samp>step</samp>’. +</p> +<a name="Example-36"></a> +<h4 class="subsubheading">Example</h4> + +<p>Stepping into a function: +</p> +<div class="smallexample"> +<pre class="smallexample">-exec-step +^running +(gdb) +*stopped,reason="end-stepping-range", +frame={func="foo",args=[{name="a",value="10"}, +{name="b",value="0"}],file="recursive2.c", +fullname="/home/foo/bar/recursive2.c",line="11",arch="i386:x86_64"} +(gdb) +</pre></div> + +<p>Regular stepping: +</p> +<div class="smallexample"> +<pre class="smallexample">-exec-step +^running +(gdb) +*stopped,reason="end-stepping-range",line="14",file="recursive2.c" +(gdb) +</pre></div> + + +<a name="The-_002dexec_002dstep_002dinstruction-Command"></a> +<h4 class="subheading">The <code>-exec-step-instruction</code> Command</h4> +<a name="index-_002dexec_002dstep_002dinstruction"></a> + +<a name="Synopsis-39"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -exec-step-instruction [--reverse] +</pre></div> + +<p>Resumes the inferior which executes one machine instruction. If the +‘<samp>--reverse</samp>’ option is specified, resumes reverse execution of the +inferior program, stopping at the previously executed instruction. +The output, once <small>GDB</small> has stopped, will vary depending on +whether we have stopped in the middle of a source line or not. In the +former case, the address at which the program stopped will be printed +as well. +</p> +<a name="GDB-Command-38"></a> +<h4 class="subsubheading"><small>GDB</small> Command</h4> + +<p>The corresponding <small>GDB</small> command is ‘<samp>stepi</samp>’. +</p> +<a name="Example-37"></a> +<h4 class="subsubheading">Example</h4> + +<div class="smallexample"> +<pre class="smallexample">(gdb) +-exec-step-instruction +^running + +(gdb) +*stopped,reason="end-stepping-range", +frame={func="foo",args=[],file="try.c", +fullname="/home/foo/bar/try.c",line="10",arch="i386:x86_64"} +(gdb) +-exec-step-instruction +^running + +(gdb) +*stopped,reason="end-stepping-range", +frame={addr="0x000100f4",func="foo",args=[],file="try.c", +fullname="/home/foo/bar/try.c",line="10",arch="i386:x86_64"} +(gdb) +</pre></div> + + +<a name="The-_002dexec_002duntil-Command"></a> +<h4 class="subheading">The <code>-exec-until</code> Command</h4> +<a name="index-_002dexec_002duntil"></a> + +<a name="Synopsis-40"></a> +<h4 class="subsubheading">Synopsis</h4> + +<div class="smallexample"> +<pre class="smallexample"> -exec-until [ <var>locspec</var> ] +</pre></div> + +<p>Executes the inferior until it reaches the address to which +<var>locspec</var> resolves. If there is no argument, the inferior +executes until it reaches a source line greater than the current one. +The reason for stopping in this case will be ‘<samp>location-reached</samp>’. +</p> +<a name="GDB-Command-39"></a> +<h4 class="subsubheading"><small>GDB</small> Command</h4> + +<p>The corresponding <small>GDB</small> command is ‘<samp>until</samp>’. +</p> +<a name="Example-38"></a> +<h4 class="subsubheading">Example</h4> + +<div class="smallexample"> +<pre class="smallexample">(gdb) +-exec-until recursive2.c:6 +^running +(gdb) +x = 55 +*stopped,reason="location-reached",frame={func="main",args=[], +file="recursive2.c",fullname="/home/foo/bar/recursive2.c",line="6", +arch="i386:x86_64"} +(gdb) +</pre></div> + + +<hr> +<div class="header"> +<p> +Next: <a href="GDB_002fMI-Stack-Manipulation.html#GDB_002fMI-Stack-Manipulation" accesskey="n" rel="next">GDB/MI Stack Manipulation</a>, Previous: <a href="GDB_002fMI-Ada-Tasking-Commands.html#GDB_002fMI-Ada-Tasking-Commands" accesskey="p" rel="previous">GDB/MI Ada Tasking Commands</a>, Up: <a href="GDB_002fMI.html#GDB_002fMI" accesskey="u" rel="up">GDB/MI</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> +</div> + + + +</body> +</html> |