<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On 12 Oct 2010, at 21:55, Willibald Krenn wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Monaco; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; ">Am 12.10.2010 20:33, schrieb Jonas Maebe:<br><blockquote type="cite"><blockquote type="cite">dwarf2 debug information seems to be broken too.<br></blockquote></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Keep this in mind:<span class="Apple-converted-space"> </span><a href="http://bugs.freepascal.org/view.php?id=15692">http://bugs.freepascal.org/view.php?id=15692</a><br></blockquote><br>I don't know exactly what to conclude from this discussion.</span></blockquote><div><br></div><div>Try using the -WB0040000 command line option.</div><br><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Monaco; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; ">Are 32 bit pointers enough for WinPE? Then stabs would be fine anyways.<br></span></blockquote><div><br></div><div>The problem is that GDB (at least in the past) zero-extends all offsets in the stabs debug information. That means that a local variable at location ebp-16 is interpreted as being at location ebp+4294967280. There are probably more such small problems, because Stabs was never designed nor implemented to be used for 64 bit platforms within the GNU tool chain.</div><br><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Monaco; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><blockquote type="cite">You may also want to try with the external linker (-Xe).<br></blockquote><br>Hmm, -Xe does not seem to work on my system.</span></blockquote><div><br></div><div>What does "not work" mean?</div><br><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Monaco; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; ">So, stabs remains the only thing that is working. (Even if it has limitations it is better than 0.)<br></span></blockquote></div><br><div>I'm not opposed to committing that change, it's just that Stabs is a dead end and since no compiler I know of uses it for generating 64 bit debug information (other than a few older Mac OS X compilers, but Mac OS X uses its own fork of GDB), it's probably also very badly tested within GDB itself.</div><div><br></div><div><br></div><div>Jonas</div></body></html>