[SPAM] sarre
by haemoid
Sex and the Seznior - the Happiness Quotiennt and Sizzling Senior sex.www.nu26{.com}
14 years, 9 months
fierceness
by station
Problems in Getting the sex Life You Wnat and Deservve - Continuing With P.www.me15 .net
14 years, 9 months
dwarf_getsrc_file Question
by Mike Lindahl
Hello,
I am using libdw for some ELF/DWARF file handling for a program that I am
working on. I am still in the early stages of this project and I am by no
means an expert on the internal ELF/DWARF formats (thus the desire to use a
standard package that will abstract these details away).
In the process of working on this project, I used the attached ELF file
(Measure.axf). When I tried to call dwarf_getsrc_file for any file and line
number, I was getting a return value of -1 with no error code set. The
issue appears to be that in dwarf_getsrc_file, it calls dwarf_getsrclines
and if this returns an error, then dwarf_getsrc_file also returns an error.
However, (again, I'm not expert) it appears that the same file can have
multiple compile units, so dwarf_getsrc_file should iterate through the
various CUs to see if it can find the source lines for a file.
I believe that a very simple change to fix this problem is to change the
return -1 on line 92 of dwarf_getsrc_file.c to continue to the next CU.
Essentially, change:
/* Get the line number information for this file. */
Dwarf_Lines *lines;
size_t nlines;
if (INTUSE(dwarf_getsrclines) (cudie, &lines, &nlines) != 0) {
return -1;
}
To
/* Get the line number information for this file. */
Dwarf_Lines *lines;
size_t nlines;
if (INTUSE(dwarf_getsrclines) (cudie, &lines, &nlines) != 0) {
off = noff;
continue;
}
I'm working off of the 0.141 tag, so it is possible that the line numbers
may differ slightly in the trunk.
Can you please take a look at this change and whether it makes sense to
integrate into the project? I can probably put together a simple test case
if needed, but I don't have a simple application to do this with at this
point.
Please let me know if there is any other information that I can provide to
help you understand the problem I'm seeing and the potential solution I've
proposed.
Thanks for your help!
--Mike
14 years, 9 months
[SPAM] prodded
by impetration
500 Lovemaking Tips & Secrets - 6 sex Tpipps!.www[dot]pill84[dot]net
14 years, 9 months
elfutils status 2009-07-20
by Roland McGrath
Last two weeks:
Time actually spent on elfutils: 60%
* trunk work
** CFI merged
** some simple new location op handling
** DWARF v4 draft new constants
*** new form support, simplest cases
* dwarf branch
** some dwarf_output tracker/maker work, but distressingly little progress
This week:
* trunk
** consider 0.142 release soon
*** needs elflint OSABI fixes first, breaking self-check on f12 builds now
** consider changing new CFI calls interface for loc/val: use DW_OP_stack_value
* dwarf branch
** finish dwarf_output tracker/maker
*** ignore sharing much code with dwarf_ref_tracker for the moment,
and just copy & hack & slash to get dwarf_output::copier working
** start emitter prototype
*** don't worry about folding in/optimizing shape/abbrev tracking,
and just walk the tree and add abbrevs on the way(?)
14 years, 9 months
elf_update bug (gap-filling accounting back again)
by Roland McGrath
Please look at https://bugzilla.redhat.com/show_bug.cgi?id=512840
It has a simple reproducer and data file for it.
Here is the fix suggested by the reporter. Please commit what fix you
think is right, and check the parallel non-mmap case is OK too.
Thanks,
Roland
>From 6e36a552dab0770c6082aeb054fe8c96ab13834b Mon Sep 17 00:00:00 2001
From: Lubomir Rintel <lkundrak(a)v3.sk>
Date: Tue, 21 Jul 2009 00:07:48 +0200
Subject: [PATCH] Fix an assert failure with gap between sections
There can be a gap even if the previous section did not change.
Additionally, last_section didn't seem to take the gap into
account, which would result in an assert fail later on.
---
libelf/elf32_updatefile.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/libelf/elf32_updatefile.c b/libelf/elf32_updatefile.c
index a4d83a1..a5be31d 100644
--- a/libelf/elf32_updatefile.c
+++ b/libelf/elf32_updatefile.c
@@ -336,10 +336,13 @@ __elfw2(LIBELFBITS,updatemmap) (Elf *elf, int change_bo, size_t shnum)
/* If there is a gap, fill it. */
if (scn_start + dl->data.d.d_off > last_position
- && ((previous_scn_changed && dl->data.d.d_off == 0)
+ && ((dl->data.d.d_off == 0)
|| ((scn->flags | dl->flags | elf->flags)
& ELF_F_DIRTY) != 0))
- fill_mmap (dl->data.d.d_off);
+ {
+ fill_mmap (dl->data.d.d_off);
+ last_position = scn_start + dl->data.d.d_off;
+ }
if ((scn->flags | dl->flags | elf->flags) & ELF_F_DIRTY)
{
--
1.6.3.3
14 years, 9 months