Now that dwarf_find_save_locs() not just finds the save-locations but
also updates the cursor-state, document this fact (the function really
is misnamed now).
Be sure to clear pi->unwind_info when looking up the kernel table and
not needing the unwind-info. Otherwise, _UPT_put_unwind_info() may
erroneously call free() on the pointer, even though that space wasn't
malloc'd, leading to crashes..
(maps_next): After reading less than a full buffer of data, copy
remaining data to the top of the buffer so as to maintain the
invariant that all data between mi->buf and mi->buf_end is valid.
This avoids maps_next() parsing uninitialized data.
(get_initial_stack_pointers): Likewise.
(unw_init_local): Use new functions to make code more readable and add
Linux kernel support.
(Logical change 1.296)
Include "libunwind_i.h" instead of "internal.h" and "tdep.h".
Define rbs_cover_and_flush() only for the !UNW_REMOTE_ONLY case.
(ia64_is_big_endian): New macro.
(ia64_get_abi): Likewise.
(ia64_set_abi): Likewise.
(ia64_get_abi_marker): Likewise.
(Logical change 1.294)
Use ia64_get_abi_marker() instead of directly referencing c->last_abi_marker.
(linux_scratch_loc): When accessing an fp-reg, default to IA64_FPREG_LOC.
Handle more registers for the Linux interrupt-frame case.
(tdep_access_reg): Use ia64_get_abi() instead of c->as->abi.
Use ia64_is_big_endian() instead of c->as->big_endian.
(Logical change 1.294)
2005/05/17 14:14:23-07:00 hp.com!davidm
(linux_sigtramp): Add "prev_cfm_loc" argument. Use it to set c->ec_loc.
(linux_interrupt): Likewise.
(hpux_sigtramp): Likewise.
(update_frame_state): Copy old cfm_loc to prev_cfm_loc and pass it to
ABI-specific handlers. Initialize c->ec_loc to c->cfm_loc by default.
(Logical change 1.293)
Abstract ia64-specific code into bsp_match() routine.
Support any platform with at least 2 EH argument registers.
2004/12/06 01:33:16-08:00 mostang.com!davidm
Rename: src/longjmp.c -> src/setjmp/longjmp.c
(Logical change 1.290)
2004/11/17 02:43:39-08:00 mostang.com!davidm
(struct callback_data): New structure.
(linear_search): New function.
(callback): Convert to getting auxiliary info passed via a pointer to
a callback_data structure, rather than an unw_dyn_info_t
structure.
Keep track of the maximum load address in max_load_addr.
If an object doesn't have a binary search-table, fall back
on a linear search.
(dwarf_find_proc_info): Fill in callback-data structure before calling
dl_iterate_phdr(). Upon returning, check whether
cb_data.single_fde is set and, if so, return directly, without
searching the DWARF unwind-table.
(dwarf_search_unwind_table): Adjust for renaming of
dwarf_parse_fde() to dwarf_extract_proc_info_from_fde().
If IP doesn't fall into the IP-range of the FDE-entry found
by the search, return UNW_ENOINFO.
(Logical change 1.290)
2004/12/15 15:40:09-08:00 hp.com!davidm
Include "tdep.h" on ia64 (we need the cursor).
(bsp_match): Fix it so it compiles again.
(resume_restore_sigmask): Likewise.
2004/12/06 10:40:49-08:00 mostang.com!davidm
(Logical change 1.290)
2004/11/23 16:59:56-08:00 mostang.com!davidm
(_UPT_access_reg): If the register is out of range, set errno
to EINVAL.
When encountering an error while accessing a register,
print the corresponding error string.
(Logical change 1.290)
a signal-trampoline, assume that it's a PLT stub.
If non-DWARF stepping fails to change IP and CFA, declare
it a bad frame.
2004/11/23 16:59:56-08:00 mostang.com!davidm
(unw_step): Also print IP as part of the function-trace.
2004/11/23 16:17:37-08:00 mostang.com!davidm
(unw_step): When dwarf_step() fails on a signal-frame, fill in all
the known locations because dwarf_step() fails on older
kernels which don't export the kernel vDSO even though every-
thing else may be providing proper DWARF unwind-info.
2004/10/25 17:43:57+02:00 homeip.net!davidm
Add Debug statement for return-value.
(Logical change 1.290)
2004/11/23 12:49:54-08:00 mostang.com!davidm
(unw_step): If dwarf_step() fails on a signal-frame, fill in the
save-locations for everything that gets saved in the
sigcontext structure.
2004/10/25 17:43:57+02:00 homeip.net!davidm
Add Debug statement for return-value.
(Logical change 1.290)
(parse_cie): Adjust for moving DWARF2 extra-info from
unw_dyn_dwarf_fde_info_t to dwarf_cie_info.
Add support for `S' augmentation ("special frames").
(dwarf_extract_proc_info_from_fde): Rename frm dwarf_parse_fde().
Convert to returning data via dwarf_cie_info rather than
unw_dyn-dwarf_fde_info_t. Allow 0-length FDE since those
can be used to indicate the end of the FDE-table. Return
the end of the FDE via *ADDRP. Ignore CIEs (we may pick them
up during linear searches through the FDE-table).
Fill in the unwind-info only if really needed. When needed,
return the info via a dynamically allocated dwarf_cie_info
structure. Add support for `S' augmentation (ABI/tag pairs).
(Logical change 1.290)
unwind-info, since DWARF expects us to do so (unlikey for ia64,
where we are guaranteed that the (return) IP points to the
correct unwind-info).
2004/11/17 02:43:39-08:00 mostang.com!davidm
(run_cfi_program): Switch over to using dwarf_cie_info instead of
unw_dyn_dwarf_fde_info_t.
(fetch_proc_info): Clear c->pi before filling it in.
(put_unwind_info): If we got non-dynamic unwind-info, free it
via a call to mempool_free().
(parse_fde): Switch over to using dwarf_cie_info instead of
unw_dyn_dwarf_fde_info_t.
(apply_reg_state): Drop accessees to c->cfa_is_sp.
2004/10/25 17:38:51+02:00 homeip.net!davidm
Fix typo: DW_CFA_CFA_expression -> DW_CFA_expression.
2004/10/21 11:15:44+02:00 homeip.net!davidm
Auto merged
2004/10/21 11:15:12+02:00 homeip.net!davidm
(run_cfi_program): Add missing newline in Debug statement.
(apply_reg_state): It was wrong to do a dwarf_get() on the CFA-location
returned by eval_location_expr(). Instead, we must make sure
we're dealing with a memory-location and, if so, just extract
the memory address as the CFA.
Also, update c->cfa only _after_ the other frame-state has
been updated. This seems to be necessary for correct parsing
of the sigtramp unwind info. Not sure yet this is 100% correct,
but it gets us through Gtest-resume-sig.
2004/10/19 23:24:56-07:00 mostang.com!davidm
(run_cfi_program): Fix typos in Debug statements.
(Logical change 1.290)
2005/04/07 12:19:38-07:00 hp.com!davidm
(ia64_make_proc_info): After looking up proc-info, cache it if
caching is enabled.
2005/02/20 21:42:55-08:00 mostang.com!davidm
Adjust for NELEMS to ARRAY_SIZE renaming.
(Logical change 1.290)
2004/12/02 18:37:47-08:00 hp.com!davidm
(get_list_addr): Even the "it's missing" version of this routine
must clear *countp to avoid spurious failures.
2004/11/03 11:45:24-08:00 hp.com!davidm
Auto merged
2004/10/21 16:06:28+02:00 homeip.net!davidm
(get_list_addr): Don't fail with -UNW_ENOINFO just because something
in /proc/maps isn't mappable.
(Logical change 1.290)
2004/11/30 22:44:47-08:00 mostang.com!davidm
(my_rt_sigreturn): New function.
(x86_64_local_resume): Use my_rt_sigreturn(). The normal sigreturn()
does nothing (returns with an error).
2004/11/23 18:01:09-08:00 mostang.com!davidm
(x86_64_local_resume): Provide a minimal implementation (a la x86).
(establish_machine_state): Fix off-by-one error.
(Logical change 1.290)
local case since it's trivial to do so and saves us time if
later on we need to build a script for that procedure.
2005/02/23 14:40:44-08:00 mostang.com!davidm
Adjust for sigset_t to intrmask_t renaming.
2004/10/25 05:21:51-07:00 hp.com!davidm
(unw_search_ia64_unwind_table): Clarify comment and add a Debug() statement
for the case where we find a bad unwind-header version.
(Logical change 1.290)
(access_reg): Adjust & enable sanity-check.
(acces_fpreg): Provide minimal implementation.
2004/12/02 00:40:45-08:00 mostang.com!davidm
(uc_addr): Implement it so it starts to be useful.
(_Uhppa_uc_addr): Rename from _Ux86_uc_addr.
(get_static_proc_name): New function.
(hppa_local_addr_space_init): Rename from x86_local_addr_space_init().
Use dwarf_find_proc_info, hppa_local_resume, and
get_static_proc_name callbacks.
(Logical change 1.290)
eh_valid_mask instead. When reading and the corresponding
eh_valid_mask bit is set, read from eh_args[] instead.
2004/11/17 02:43:39-08:00 mostang.com!davidm
(tdep_access_reg): Treat UNW_X86_64_RSP exactly like UNW_X86_64_CFA.
(Logical change 1.290)
and UNW_HPPA_EH{0,1,2,3} correctly.
(tdep_access_fpreg): Implement.
2004/12/02 00:40:45-08:00 mostang.com!davidm
(tdep_access_reg): Provide a minimally working implementation.
(tdep_access_fpreg): New (unimplemented) function.
(Logical change 1.290)
(put_script_cache): Fix typo in argument name.
2005/04/07 12:19:38-07:00 hp.com!davidm
(ia64_get_cache_proc_info): Move it to near the end of the file.
(script_init): Also call ia64_fetch_proc_info() if the script was
found in the cache but it's empty (count == 0 and NULL
unwind_info pointer). Also invoke build_script() if
script has no instructions yet (count==0). Add assertion
to ensure that build_script() never returns an empty
script.
(ia64_cache_proc_info): New function to cache the proc_info only.
2005/02/23 14:40:44-08:00 mostang.com!davidm
Adjust for sigset_t to intrmask_t renaming.
2005/02/23 13:10:05-08:00 mostang.com!davidm
Adjust for "ia64_rse" to "rse" prefix change.
(Logical change 1.290)
2004/10/19 23:15:02-07:00 mostang.com!davidm
(update_frame_state): Take additional argument "prev_cfa".
When we detect a NULL-frame, debug-print the IP and the CFA
so we know where things went wrong.
(dwarf_step): Get "prev_cfa" before we call dwarf_find_save_locs(),
since update_frame_state() doesn't actually update
the CFA.
(Logical change 1.290)
(pick): Likewise.
(dwarf_eval_expr): Fix "while" conditional so we see all operators.
Fix DW_OP_litN typo: "opcode = DW_OP_lit0" to
"opcode - DW_OP_lit0".
Add lots of Debug() statements so we can see what's going
on. Debug level 15 will show just entry/return values.
Debug level 16 shows all operators.
(Logical change 1.290)
_U_dyn_info_list_addr as weak and fail if the symbol remained
undefined.
(get_static_proc_name): Likewise for _Uelf64_get_proc_name().
(Logical change 1.282)
successfully. This avoids a failure in ia64-test-setjmp which
was due to the fact that sigprocmask() caused a segfault (due to
overflowing the stack) and at that point we had a partially updated
jmp_buf.
(Logical change 1.272)
