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| author | Joel Brobecker <brobecker@gnat.com> | 2011-01-13 16:24:27 +0000 |
|---|---|---|
| committer | Joel Brobecker <brobecker@gnat.com> | 2011-01-13 16:24:27 +0000 |
| commit | 77ca787b12516ebb1b0d23710021b26b9c81b018 (patch) | |
| tree | c566d4c91a59e95671e251887b36d704ec6e8d1a /gdb/ChangeLog | |
| parent | 92c9a4639bb3294d74a36b6d0c0cb07771bbe906 (diff) | |
| download | gdb-77ca787b12516ebb1b0d23710021b26b9c81b018.zip gdb-77ca787b12516ebb1b0d23710021b26b9c81b018.tar.gz gdb-77ca787b12516ebb1b0d23710021b26b9c81b018.tar.bz2 | |
[ia64-hpux] unwinding bsp value from system call
This fixes unwinding from a thread that is stopped inside a system call.
This can be seen when switching to a thread that is stopped doing a
pthread_cond_wait, for instance...
The comments inside the code should explain what is happening in our
case (the HP-UX exception in the case of system calls): Under certain
circumstances (program stopped inside syscall), the offset to apply to
the current BSP in order to compute the previous BSP is not the usual
CFM & 0x7f.
We parts in this patch:
1. Figuring out that we are stopped inside a syscal: This requires
a TT_LWP_RUREGS ttrace call, which is not directly possible from
ia64-tdep.c. So use defined a new TARGET_OBJECT_HPUX_UREGS object
to request it from the -nat side.
2. Add a gdbarch_tdep method that allows us to change the default
behavior on ia64-hpux, permitting us to have a different "size of
register frame" in that one particular case.
gdb/ChangeLog:
* target.h (enum target_object): Add TARGET_OBJECT_HPUX_UREGS.
* ia64-tdep.h (struct frame_info): forward declaration.
(struct gdbarch_tdep): Add field size_of_register_frame.
* ia64-tdep.c (ia64_access_reg): Use tdep->size_of_register_frame
to determine the size of the register frame.
(ia64_size_of_register_frame): New function.
(ia64_gdbarch_init): Set tdep->size_of_register_frame.
* ia64-hpux-tdep.c: Include "target.h" and "frame.h".
(IA64_HPUX_UREG_REASON): New macro.
(ia64_hpux_stopped_in_syscall, ia64_hpux_size_of_register_frame):
New functions.
(ia64_hpux_init_abi): Set tdep->size_of_register_frame.
* ia64-hpux-nat.c (ia64_hpux_xfer_uregs): New function.
(ia64_hpux_xfer_partial): Add handling of TARGET_OBJECT_HPUX_UREGS
objects.
Diffstat (limited to 'gdb/ChangeLog')
| -rw-r--r-- | gdb/ChangeLog | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 814b0dc..54a8d05 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,23 @@ 2011-01-13 Joel Brobecker <brobecker@adacore.com> + * target.h (enum target_object): Add TARGET_OBJECT_HPUX_UREGS. + * ia64-tdep.h (struct frame_info): forward declaration. + (struct gdbarch_tdep): Add field size_of_register_frame. + * ia64-tdep.c (ia64_access_reg): Use tdep->size_of_register_frame + to determine the size of the register frame. + (ia64_size_of_register_frame): New function. + (ia64_gdbarch_init): Set tdep->size_of_register_frame. + * ia64-hpux-tdep.c: Include "target.h" and "frame.h". + (IA64_HPUX_UREG_REASON): New macro. + (ia64_hpux_stopped_in_syscall, ia64_hpux_size_of_register_frame): + New functions. + (ia64_hpux_init_abi): Set tdep->size_of_register_frame. + * ia64-hpux-nat.c (ia64_hpux_xfer_uregs): New function. + (ia64_hpux_xfer_partial): Add handling of TARGET_OBJECT_HPUX_UREGS + objects. + +2011-01-13 Joel Brobecker <brobecker@adacore.com> + Add support for ia64-hpux. * config/ia64/hpux.mh, ia64-hpux-nat.c, ia64-hpux-tdep.c, ia64-hpux-tdep.h, solib-ia64-hpux.c, solib-ia64-hpux.h: New files. |