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diff --git a/share/doc/gdb/Sparc64.html b/share/doc/gdb/Sparc64.html new file mode 100644 index 0000000..79e102e --- /dev/null +++ b/share/doc/gdb/Sparc64.html @@ -0,0 +1,155 @@ +<!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: Sparc64</title> + +<meta name="description" content="Debugging with GDB: Sparc64"> +<meta name="keywords" content="Debugging with GDB: Sparc64"> +<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="Architectures.html#Architectures" rel="up" title="Architectures"> +<link href="S12Z.html#S12Z" rel="next" title="S12Z"> +<link href="Nios-II.html#Nios-II" rel="previous" title="Nios II"> +<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="Sparc64"></a> +<div class="header"> +<p> +Next: <a href="S12Z.html#S12Z" accesskey="n" rel="next">S12Z</a>, Previous: <a href="Nios-II.html#Nios-II" accesskey="p" rel="previous">Nios II</a>, Up: <a href="Architectures.html#Architectures" accesskey="u" rel="up">Architectures</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="Sparc64-1"></a> +<h4 class="subsection">21.4.8 Sparc64</h4> +<a name="index-Sparc64-support"></a> +<a name="index-Application-Data-Integrity"></a> +<a name="ADI-Support"></a> +<h4 class="subsubsection">21.4.8.1 ADI Support</h4> + +<p>The M7 processor supports an Application Data Integrity (ADI) feature that +detects invalid data accesses. When software allocates memory and enables +ADI on the allocated memory, it chooses a 4-bit version number, sets the +version in the upper 4 bits of the 64-bit pointer to that data, and stores +the 4-bit version in every cacheline of that data. Hardware saves the latter +in spare bits in the cache and memory hierarchy. On each load and store, +the processor compares the upper 4 VA (virtual address) bits to the +cacheline’s version. If there is a mismatch, the processor generates a +version mismatch trap which can be either precise or disrupting. The trap +is an error condition which the kernel delivers to the process as a SIGSEGV +signal. +</p> +<p>Note that only 64-bit applications can use ADI and need to be built with +ADI-enabled. +</p> +<p>Values of the ADI version tags, which are in granularity of a +cacheline (64 bytes), can be viewed or modified. +</p> + +<dl compact="compact"> +<dd><a name="index-adi-examine"></a> +</dd> +<dt><code>adi (examine | x) [ / <var>n</var> ] <var>addr</var></code></dt> +<dd> +<p>The <code>adi examine</code> command displays the value of one ADI version tag per +cacheline. +</p> +<p><var>n</var> is a decimal integer specifying the number in bytes; the default +is 1. It specifies how much ADI version information, at the ratio of 1:ADI +block size, to display. +</p> +<p><var>addr</var> is the address in user address space where you want <small>GDB</small> +to begin displaying the ADI version tags. +</p> +<p>Below is an example of displaying ADI versions of variable "shmaddr". +</p> +<div class="smallexample"> +<pre class="smallexample">(gdb) adi x/100 shmaddr + 0xfff800010002c000: 0 0 +</pre></div> + +<a name="index-adi-assign"></a> +</dd> +<dt><code>adi (assign | a) [ / <var>n</var> ] <var>addr</var> = <var>tag</var></code></dt> +<dd> +<p>The <code>adi assign</code> command is used to assign new ADI version tag +to an address. +</p> +<p><var>n</var> is a decimal integer specifying the number in bytes; +the default is 1. It specifies how much ADI version information, at the +ratio of 1:ADI block size, to modify. +</p> +<p><var>addr</var> is the address in user address space where you want <small>GDB</small> +to begin modifying the ADI version tags. +</p> +<p><var>tag</var> is the new ADI version tag. +</p> +<p>For example, do the following to modify then verify ADI versions of +variable "shmaddr": +</p> +<div class="smallexample"> +<pre class="smallexample">(gdb) adi a/100 shmaddr = 7 +(gdb) adi x/100 shmaddr + 0xfff800010002c000: 7 7 +</pre></div> + +</dd> +</dl> + +<hr> +<div class="header"> +<p> +Next: <a href="S12Z.html#S12Z" accesskey="n" rel="next">S12Z</a>, Previous: <a href="Nios-II.html#Nios-II" accesskey="p" rel="previous">Nios II</a>, Up: <a href="Architectures.html#Architectures" accesskey="u" rel="up">Architectures</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> |