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Fixup long lines.

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This commit is contained in:
Arun Sharma 2013-05-18 23:20:03 -07:00
parent eac65dc9b8
commit 5eba0f816d
1 changed files with 17 additions and 11 deletions
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28
src/os-qnx.c
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@ -65,19 +65,25 @@ tdep_get_elf_image (struct elf_image *ei, pid_t pid, unw_word_t ip,
cbi.offset = 0;
cbi.path = NULL;
/* QNX's support for accessing symbol maps is severely broken. There is a devctl() call that
can be made on a proc node (DCMD_PROC_MAPDEBUG) which returns information similar to Linux's
/proc/<pid>/maps node, however the filename that is returned by this call is not an absolute
path, and there is no foolproof way to map the filename back to the file that it came from.
/* QNX's support for accessing symbol maps is severely broken. There is
a devctl() call that can be made on a proc node (DCMD_PROC_MAPDEBUG)
which returns information similar to Linux's /proc/<pid>/maps
node, however the filename that is returned by this call is not an
absolute path, and there is no foolproof way to map the filename
back to the file that it came from.
Therefore, the normal approach for implementing this function, which works equally well for
both local and remote unwinding, will not work here. The only type of image lookup which
works reliably is locally, using dl_iterate_phdr(). However, the only time that this function
is required to look up a remote image is for ptrace support, which doesn't work on QNX anyway.
Local unwinding, which is the main case that makes use of this function, will work fine with
dl_iterate_phdr(). Therefore, in lieu of any better platform support for remote image lookup,
this function has just been implemented in terms of dl_iterate_phdr().
Therefore, the normal approach for implementing this function,
which works equally well for both local and remote unwinding,
will not work here. The only type of image lookup which works
reliably is locally, using dl_iterate_phdr(). However, the only
time that this function is required to look up a remote image is for
ptrace support, which doesn't work on QNX anyway. Local unwinding,
which is the main case that makes use of this function, will work
fine with dl_iterate_phdr(). Therefore, in lieu of any better
platform support for remote image lookup, this function has just
been implemented in terms of dl_iterate_phdr().
*/
if (pid != getpid())
{
/* Return an error if an attempt is made to perform remote image lookup */