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* runtime/unwind.c (cie_for_fde): Take table and table_len into account.
(fde_pointer_type): Likewise.
* runtime/unwind/unwind.h: Adjust function prototypes.
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Setup the pt_regs REG_IP to the actual breakpoint address before
entering a probe handler for [ku]probe[ret] (and restore it after
returning). This helps getting symbol resolution and backtraces
more correct and makes it more conform with other probe handlers
like the iutrace and profile timers that also provide pt_regs
(which untill now exhibited off-by-one errors while unwinding).
* tapsets.cxx (dwarf_derived_probe_group::emit_module_decls):
Setup REG_IP correctly before calling enter_kprobe_probe
and enter_kretprobe_probe, and restore afterwards.
(uprobe_derived_probe_group::emit_module_decls): Likewise for
enter_uprobe_probe and enter_uretprobe_probe.
(kprobe_derived_probe_group::emit_module_decls): Likewise for
enter_kprobe2_probe and enter_kretprobe2_probe.
* runtime/unwind/i386.h (arch_unw_init_frame_info): Initialize
info->call_frame to zero.
* runtime/unwind/x86_64.h (arch_unw_init_frame_info): Likewise.
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* runtime/sym.h (_stp_module): Remove unwind_data, unwind_data_len and
unwind_is_ehframe fields. Add debug_frame, eh_frame, debug_frame_len,
eh_frame_len and eh_frame_addr fields.
* runtime/unwind.c: Use debug_frame and debug_frame_len instead of
unwind_data and unwind_data_len throughout.
(cie_for_fde): Take unwind_data and is_ehframe as direct arguments.
* runtime/unwind/unwind.h (cie_for_fde): New function declaration.
* translate.cxx (get_unwind_data): Fetch and return both debug_frame
and eh_frame tables.
(dump_unwindsyms): Dump both debug_frame and eh_frame tables.
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The kernel-tip tree also has a MAX_STACK_DEPTH defined in
perf_counter.h, so we need to separate our definition. I've changed the
definition in our unwinder to STP_MAX_STACK_DEPTH.
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2008-04-15 Frank Ch. Eigler <fche@elastic.org>
* unwind/i386.h (STACK_BOTTOM, STACK_TOP): Comment out these
unused definitions, for they collide with some kernels
(2.6.25-0.121.rc5.git4 rawhide).
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