1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<!-- Copyright (C) 1988-2021 Free Software Foundation, Inc. 4 5Permission is granted to copy, distribute and/or modify this document 6under the terms of the GNU Free Documentation License, Version 1.3 or 7any later version published by the Free Software Foundation; with the 8Invariant Sections being "Free Software" and "Free Software Needs 9Free Documentation", with the Front-Cover Texts being "A GNU Manual," 10and with the Back-Cover Texts as in (a) below. 11 12(a) The FSF's Back-Cover Text is: "You are free to copy and modify 13this GNU Manual. 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It should contain 81registers ‘<samp>r0</samp>’ through ‘<samp>r13</samp>’, ‘<samp>sp</samp>’, ‘<samp>lr</samp>’, ‘<samp>pc</samp>’, 82and ‘<samp>xpsr</samp>’. 83</p> 84<p>The ‘<samp>org.gnu.gdb.arm.fpa</samp>’ feature is optional. If present, it 85should contain registers ‘<samp>f0</samp>’ through ‘<samp>f7</samp>’ and ‘<samp>fps</samp>’. 86</p> 87<p>The ‘<samp>org.gnu.gdb.xscale.iwmmxt</samp>’ feature is optional. If present, 88it should contain at least registers ‘<samp>wR0</samp>’ through ‘<samp>wR15</samp>’ and 89‘<samp>wCGR0</samp>’ through ‘<samp>wCGR3</samp>’. The ‘<samp>wCID</samp>’, ‘<samp>wCon</samp>’, 90‘<samp>wCSSF</samp>’, and ‘<samp>wCASF</samp>’ registers are optional. 91</p> 92<p>The ‘<samp>org.gnu.gdb.arm.vfp</samp>’ feature is optional. If present, it 93should contain at least registers ‘<samp>d0</samp>’ through ‘<samp>d15</samp>’. If 94they are present, ‘<samp>d16</samp>’ through ‘<samp>d31</samp>’ should also be included. 95<small>GDB</small> will synthesize the single-precision registers from 96halves of the double-precision registers. 97</p> 98<p>The ‘<samp>org.gnu.gdb.arm.neon</samp>’ feature is optional. It does not 99need to contain registers; it instructs <small>GDB</small> to display the 100VFP double-precision registers as vectors and to synthesize the 101quad-precision registers from pairs of double-precision registers. 102If this feature is present, ‘<samp>org.gnu.gdb.arm.vfp</samp>’ must also 103be present and include 32 double-precision registers. 104</p> 105 106 107 108</body> 109</html> 110