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| author | Thomas Schwinge <tschwinge@gnu.org> | 2007-09-20 01:54:49 +0200 |
|---|---|---|
| committer | Thomas Schwinge <tschwinge@gnu.org> | 2007-09-20 01:54:49 +0200 |
| commit | 44b64a5abb6ce90b485ab5ab34890253410ef4ec (patch) | |
| tree | 0c72fb189dc6911a1eb96012a97249cabef156a2 | |
| parent | 1d2e5721cb660eca14982bdebe7cbeef2f834381 (diff) | |
Add an example about how to attempt debugging Hurd libraries using GDB.
| -rw-r--r-- | hurd/debugging.mdwn | 1 | ||||
| -rw-r--r-- | hurd/debugging/hurd.mdwn | 43 |
2 files changed, 44 insertions, 0 deletions
diff --git a/hurd/debugging.mdwn b/hurd/debugging.mdwn index 3ff2fba4..25686615 100644 --- a/hurd/debugging.mdwn +++ b/hurd/debugging.mdwn @@ -25,3 +25,4 @@ redistribute your contributions. # About Specific Packages * [[glibc]] +* [[Hurd]] diff --git a/hurd/debugging/hurd.mdwn b/hurd/debugging/hurd.mdwn new file mode 100644 index 00000000..3d3f69c5 --- /dev/null +++ b/hurd/debugging/hurd.mdwn @@ -0,0 +1,43 @@ +Say you want to try running file system server (`[[translator/ext2fs]]`, +`[[translator/jfs]]`, ...) against a modified version of [[libpager]] and +debug the latter one using [[GDB]]. + +Set the translator like this: + + $ settrans -fgap ↩ + jfs.img.i ↩ + /usr/bin/env ↩ + LD_LIBRARY_PATH=~tschwinge/tmp/hurd/hurd.ogi/build/libpager ↩ + "`pwd`"/jfs.obj/jfs ↩ + "`pwd`"/jfs.img + +Then, when starting GDB, start it like this (or use an equivalent method, of +course): + + $ LD_LIBRARY_PATH=~tschwinge/tmp/hurd/hurd.ogi/build/libpager ↩ + gdb ↩ + ~tschwinge/tmp/jfs/jfs.obj/jfs 15436 + GNU gdb 6.5-debian + [...] + Reading symbols from /lib/libdiskfs.so.0.3...Reading symbols from /lib/debug/lib/libdiskfs.so.0.3...done. + done. + Loaded symbols for /lib/libdiskfs.so.0.3 + Reading symbols from /devel4/tschwinge/tmp/hurd/hurd.ogi/build/libpager/libpager.so.0.3...done. + Loaded symbols for /devel4/tschwinge/tmp/hurd/hurd.ogi/build/libpager/libpager.so.0.3 + Reading symbols from /lib/libstore.so.0.3...Reading symbols from /lib/debug/lib/libstore.so.0.3...done. + done. + Loaded symbols for /lib/libstore.so.0.3 + [...] + (gdb) break pager_demuxer + Breakpoint 1 at 0x105c98d: file ../../libpager/demuxer.c, line 27. + [...] + Breakpoint 1, pager_demuxer (inp=0x12bded0, outp=0x12bbec0) at ../../libpager/demuxer.c:27 + 27 { + (gdb) list + 22 /* Demultiplex a single message directed at a pager port; INP is the + 23 message received; fill OUTP with the reply. */ + 24 int + 25 pager_demuxer (mach_msg_header_t *inp, + [...] + +Voilà. |