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* use eh_frame_hdr table to speed up unwindingTim Moore2010-01-201-12/+62
| | | | | | | | | | | | * runtime/sym.h (_stp_module): add unwind_hdr_addr member. * runtime/unwind.c (read_ptr_sect): Modification of read_pointer that also handles offsets from text or "data" sections. (read_pointer): Use it. (_stp_search_unwind_hdr): Use read_ptr_sect to calculate values that are relative to the .eh_frame_hdr section. (unwind_frame): Search the frame header if this is an eh frame. * translate.cxx (get_unwind_data): Get the eh_frame_hdr too. (dump_unwindsyms): Write out eh_frame_hdr stuff.
* Use __access_process_vm_noflush for static user semaphore decrement.Stan Cox2010-01-131-0/+1
| | | | | | * access_process_vm (__access_process_vm_noflush): New * tapsets.cxx (uprobe_derived_probe_group::emit_module_exit): Use it. * translate.cxx (translate_pass): Declare it.
* sdt.h semaphore: use get_user / put_user instead of __access_process_vm.Frank Ch. Eigler2009-12-221-1/+0
| | | | | | * translate.cxx (translate_pass): Don't #include <access_blah.> * tapsets.cxx, tapset-utrace.cxx: Replace __access_process_vm() calls with get_user() / put_user() respectively.
* PR11112: Check the full %m/M buffer, and limit the lengthJosh Stone2009-12-211-13/+26
| | | | | | | | | | | | | | | | | We already had code in place to try a deref on the requested memory buffer, but it was missing the static-precision case. Thus, it was possible to craft an address that would pass the check on the first byte but would pagefault at the end of the buffer. While we're at it, we should also be limiting the number of bytes in such a read, so even legitimately-huge buffers won't chew up kernel time. I've arbitrarily chosen 1024 as the limit, but we can revisit that later. (see also PR10490) TODO: we need a reliable testcase where a starting address is valid but the end address is bogus. In PR11112, the reproducer was using a huge precision to run off the heap, but we need something that will consistently work even with <1024 length.
* PR 11097 fixed by correcting MAXNESTING test.David Smith2009-12-161-1/+1
| | | | | * translate.cxx (emit_function): Fixed MAXNESTING test to not allow too deep recursion.
* set the IP in return probes to the returned-to instructionTim Moore2009-12-161-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | It's easily available in kretprobes and uretprobes and is consistent with the rest of the program state. * translate.cxx (emit_common_header) : add uretprobe_instance to context. * tapsets.cxx (common_probe_entryfn_prologue): Initialize ri in context to 0. (dwarf_derived_probe_group::emit_module_decls): Change IP to return address in kretprobes. (uprobe_derived_probe_group::emit_module_decls): enter_uretprobe_probe: set ri (uretprobe_instance) in context. Change IP to return address in uretprobes. Don't emit uprobe include and #define * runtime/runtime.h : Add includes and #define for uprobes. * runtime/stack.c (_stp_stack_print, _stp_stack_snprint): Add extra argument for uretprobe_instance. * tapset/context-unwind.stp (print_backtrace, backtrace): Pass NULL for uretprobe_instance to _stp_stack_print. * tapset/ucontext-unwind.stp (print_ubacktrace, ubacktrace): pass uretprobe_instance to _stp_stack_print * testsuite/systemtap.context/uprobe_uaddr.exp : new test for uaddr in function probes * testsuite/systemtap.context/uprobe_uaddr.stp : new file
* Don't save build-id if it is located before _stextEugeniy Meshcheryakov2009-12-151-1/+8
| | | | | | | This probably means that build-id will not be loaded at all and happens for example with ARM kernel. See also: http://sources.redhat.com/ml/systemtap/2009-q4/msg00574.html
* Fix PR 11034 by directly allocating per-cpu context data.David Smith2009-12-021-8/+28
| | | | | | | | | | | * translate.cxx (emit_common_header): Change type of 'contexts' to an array of struct context pointers. (emit_module_init): Allocate a context structure for each possible cpu. Free each if an error occurs. (emit_module_exit): Update contexts reference. Free each possible cpu's context structure. * tapsets.cxx (common_probe_entryfn_prologue): Use array instead of percpu data for context structure.
* cleanup: explain -5 magic value used in map-sorting codeFrank Ch. Eigler2009-11-201-1/+1
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* Allow modules to trigger task_finder vma_tracker.Mark Wielaard2009-11-161-0/+7
| | | | | | | * runtime/sym.h: Define _stp_need_vma_tracker. * translate.cxx (emit_symbol_data_done): Output _stp_need_vma_tracker value. (c_unparser::emit_module_init): If STP_NEED_VMA_TRACKER isn't defined check _stp_need_vma_tracker to call _stp_sym_init().
* PR5916: Exploit kretprobe data storage areaJosh Stone2009-11-101-0/+1
| | | | | | | | | | | | | | | | | | | | Since 2.6.25, kretprobes can carry a data packet to be filled in an entry_handler. This patch lets us store our implicitly-saved $target variables in .return probes in that data area. * tapset/kretprobe.stp: New get/set functions for kretprobe data. * translate.cxx (c_unparser::emit_common_header): Add context->pi_longs. * tapsets.cxx (dwarf_var_expanding_visitor::visit_target_symbol_saved_return): Switch between the old and new methods of saving $vars in .return probes. (dwarf_var_expanding_visitor::gen_mapped_saved_return): The old way. (dwarf_var_expanding_visitor::gen_kretprobe_saved_return): The new way. (dwarf_derived_probe::join_group): Don't register paired entry-handlers. (dwarf_derived_probe::dwarf_derived_probe): Remember saved-var details. (dwarf_derived_probe_group::emit_module_decls): Output saved-var details. Also split the kretprobe handler whether we're on entry or return. (dwarf_derived_probe_group::emit_module_init): Prepare the entry handler. * testsuite/systemtap.base/kretprobe-vars.stp: Test implicit $var saving.
* Refactor probe locking into shared functionsJosh Stone2009-10-211-89/+44
| | | | | | | | | | | | For scripts with thousands of probes, we save a fair amount of code-gen time in pass-4 by having the common locking code extracted into shared functions. * runtime/probe_lock.h (stp_lock_probe, stp_unlock_probe): New. * translate.cxx (c_unparser::emit_lock_decls): New, emits a static const array of locks needed for each probe. (c_unparser::emit_locks): Just call stp_lock_probe. (c_unparser::emit_unlocks): Just call stp_unlock_probe.
* PR10750: Enforce a reasonable limit on # of varargsJosh Stone2009-10-211-0/+5
| | | | | | | | | | If we leave the number of args unbounded, then an excessively-sized printf could cause a kernel stack overflow. I've arbitrarily chosen 32 as our new maximum. * translate.cxx (c_unparser::visit_print_format): Throw if >32 args. * testsuite/transko/varargs.stp: Assert that 33 args aren't allowed. * testsuite/transok/varargs.stp: Assert that 32 args are ok.
* Add limit on unwind table size we accept.Mark Wielaard2009-10-201-0/+11
| | | | | * translate.cxx (MAX_UNWIND_TABLE_SIZE): New define. (dump_unwindsyms): Check debug_len and eh_len against new limit.
* PR10257: Add support for sprint[ln](@hist_*).Przemyslaw Pawelczyk2009-10-131-2/+20
| | | | | | | | * parse.cxx (parser::parse_symbol): Add sprint[ln] to @hist_* hack. * runtime/stat-common.c: Replace reprint with new reprint_buf, add more generic _stp_stat_print_histogram_buf and call it from the older one. Also correct some formatting issues. * translate.cxx (c_unparser::visit_print_format): Add sprint case.
* Generate safety net assertions in probe function not authorized for ↵Dave Brolley2009-10-091-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | unprivileged users. 2009-10-08 Dave Brolley <brolley@redhat.com> * elaborate.h (emit_unprivileged_assertion): New virtual method of deriv ed_probe. (emit_process_owner_assertion): New static method of derived_probe. (check_unprivileged): New virtual method of derived_probe_builder. (match_node::unprivileged_ok): Removed. (match_node::allow_unprivileged): Removed. (match_node::unprivileged_allowed): Removed. * elaborate.cxx (translate.h): #include it. (emit_unprivileged_assertion): New virtual method of derived_probe. (emit_process_owner_assertion): New static method of derived_probe. (check_unprivileged): New virtual method of derived_probe_builder. (match_node::unprivileged_ok): Removed. (match_node::allow_unprivileged): Removed. (match_node::unprivileged_allowed): Removed. (find_and_build): Don't check for unprivileged restrictions here. Call t he builder's check_unprivileged method. (alias_expansion_builder::check_unprivileged): New virtual method. * tapset-been.cxx (be_derived_probe::emit_unprivileged_assertion): New v irtual method. (be_builder::check_unprivileged): Likewise. (never_derived_probe::emit_unprivileged_assertion): Likewise. (never_builder::check_unprivileged): Likewise. (register_tapset_been): Don't call allow_unprivileged. * tapset-itrace.cxx (itrace_derived_probe::emit_unprivileged_assertion): New virtual method. (itrace_builder::check_unprivileged): Likewise. (register_tapset_itrace): Don't call allow_unprivileged. * tapset-utrace.cxx (utrace_derived_probe::emit_unprivileged_assertion): New virtual method. (utrace_builder::check_unprivileged): Likewise. (register_tapset_utrace): Don't call allow_unprivileged. * tapset-timer.cxx (timer_derived_probe::emit_unprivileged_assertion): N ew virtual method. (timer_builder::check_unprivileged): Likewise. (register_tapset_timers): Don't call allow_unprivileged. * tapsets.cxx (uprobe_derived_probe::emit_unprivileged_assertion): New v irtual method. (uprobe_builder::check_unprivileged): Likewise. (register_standard_tapsets): Don't call allow_unprivileged. (register_statement_variants): Remove unprivileged_ok_p parameter. Don't call allow_unprivileged. (register_function_variants): Likewise. (register_function_and_statement_variants): Likewise. (register_patterns): Don't call allow_unprivileged. * translate.cxx (emit_probe): Call v->emit_unprivileged_assertion.
* Cache Dwfl's for reuse between pass 2 and pass 3.Mark Wielaard2009-09-291-7/+8
| | | | | | | | | | * setupdwfl.h: Introduce DwflPtr. * setupdwfl.cxx: Cache kernel_dwfl and user_dwfl. Keep track of last used module strings. Return cached versions if same query used. * dwflpp.h: Use DwflPtr instead of Dwfl*. * dwflpp.cxx: Use DwflPtr and don't dwfl_end(). * translate.cxx: Likewise. Run through dwfl_getmodules() with returned ptr offset.
* Factor out duplicated code to setup user/module Dwfl from dwflpp/translate.Mark Wielaard2009-09-291-27/+6
| | | | | | | | | * setupdwfl.h: Add setup_dwfl_user() and is_user_module(). * setupdwfl.cxx: Likewise. * dwflpp.cxx (setup_user): Use setup_dwfl_user(). * translate.cxx (emit_symbol_data): Likewise and is_user_module(). * tapsets.cxx (dwarf_cast_expanding_visitor::visit_cast_op): Use is_user_module().
* Factor out duplicated code to setup kernel/module Dwfl from dwflpp/translate.Mark Wielaard2009-09-281-66/+12
| | | | | | | | | | | * setupdwfl.h: New header file. * setupdwfl.cxx: New source file containing shared setup_dwfl_kernel() code. * dwflpp.cxx (dwfl_report_offline_predicate): Removed. (setup_kernel): Call setup_dwfl_kernel(). * translate.cxx (dwfl_report_offline_predicate2): Remove. (emit_symbol_data): Call setup_dwfl_kernel(). * Makefile.am (stap_SOURCES): Add setupdwfl.cxx. * Makefile.in: Regenerated.
* * sdt.h (STAP_SEMAPHORE): New. Add guard to utrace probe points.Stan Cox2009-09-161-0/+1
| | | | | | | | | | | | | | * itrace.h (__access_process_vm): Moved from here... * runtime/access_process_vm.h: New. ...to here. * translate.cxx (translate_pass): Include access_process_vm.h * session.h (sdt_semaphore_addr): New. * tapsets.cxx (sdt_query::record_semaphore): New. Record sdt_semaphore_addr. (uprobe_derived_probe_group::emit_module_decls): Allow for uprobe guard variable to be set and unset. (uprobe_derived_probe_group::emit_module_decls): Likewise. (uprobe_derived_probe_group::emit_module_exit): Likewise. * tapset-utrace.cxx (utrace_derived_probe_group::emit_probe_decl): Likewise. (utrace_derived_probe_group::emit_module_decls): Likewise. (utrace_derived_probe_group::emit_module_exit): Likewise.
* PR10524: reduce massive-uprobe script modules' .data consumptionFrank Ch. Eigler2009-09-081-32/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | The general approach is to rip out task_finder_tgt's from all over the place (including the unwindsym vmcbs, and the stap_uprobe_specs), and instead have a small handful of them: one for all unwindsyms, and one per abstract probed process (PID or NAME). These are in turn shared by all new stap_unwind_specs by index. Before: probe process("./stap").function("*") -rw-r--r--. 1 fche users 11775283 2009-09-08 20:26 /var/tmp/fche/systemtap/cache/96/stap_96c0479d674db55ec98d8a8750a790e7_7989596.ko text data bss dec hex filename 445158 8351944 4306472 13103574 c7f1d6 /var/tmp/fche/systemtap/cache/96/stap_96c0479d674db55ec98d8a8750a790e7_7989596.ko After: (Note how data shrank, though text gained a bit in const-init-data.) -rw-r--r--. 1 fche users 4021569 2009-09-08 20:27 /var/tmp/fche/systemtap/cache/e4/stap_e46e88634efd850b1586e81c231c239a_8058419.ko text data bss dec hex filename 1896511 2192 4324808 6223511 5ef697 /var/tmp/fche/systemtap/cache/e4/stap_e46e88634efd850b1586e81c231c239a_8058419.ko * tapsets.cxx (uprobe_derived_probe_group): Rewrite emit_module_decls, and adjust emit_module_init. * runtime/sym.c (_stp_sym_init): Initialize unwindsyms-shared vmcb. * runtime/sym.h (_stp_module): Remove *vmcb field. * translate.cxx (emit_module_init, dump_unwindsyms): Adapt. * translate.h (assert_0_indent): Flush output before possibly assert-failing.
* Fix build-id check for relocatable kernelEugeniy Meshcheryakov2009-09-071-2/+3
| | | | | | Save offset of build id relative to _stext instead of absolute address for kernel and apply relocations at run-time. This fixes Debian bug #545277 (http://bugs.debian.org/545277).
* Merge branch 'master' of sourceware.org:/git/systemtapJosh Stone2009-09-031-0/+2
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| * Allow process begin/end probes for unprivileged users.Dave Brolley2009-09-031-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2009-09-03 Dave Brolley <brolley@redhat.com> * tapsets.cxx (visit_cast_op): Don't disallow unprivileged users. Annotate synthesized function with /* unprivileged */. * tapset-utrace.cxx (register_tapset_utrace): Call allow_unprivileged for process begin and end probes. * translate.cxx (translate_pass): Generate '#define STP_PRIVILEGED 1' unless --unprivileged was specified. * runtime/transport/transport.c: Don't define _stp_unprivileged_user. * runtime/task_finder.c (__stp_utrace_attach_match_filename): Check that _stp_uid equals the task euid when STP_PRIVILEGED is not defined. (stap_start_task_finder): Likewise. * runtime/staprun/staprun.c (insert_stap_module): Don't generate module option _stp_unprivileged_user.
* | Unify lex_cast* and avoid string copiesJosh Stone2009-09-021-18/+18
|/ | | | | | | | | | | | | | | We always use lex_cast either to string or from string, so I made that explicit, and got rid of some string copies in the process. There was also stringify(), which was redundant to lex_cast<string>. We also always used lex_cast_hex to string, so that's now hard-coded and again eliminated a string copy. For lex_cast_qstring<string>, there's no need to write the streamify the input, so a specialization now operates directly on the input. Hopefully this is a bit cleaner, and I do measure it to be a little faster on scripts with many probes.
* PR10589: switch to kernel vscnprintf for _stp_{dbug,warn,error} calls in runtimeFrank Ch. Eigler2009-09-021-1/+1
| | | | | | | | | | | _stp_vscnprintf is only suitable for calls from the script, with slightly different conventions (64-bit ints/pointers, extra formatting directives). * runtime/runtime.h (_stp_{dbug,warn,error}): Add __attribute__ format(printf). * runtime/io.c (_stp_vlog): Ditto. Use vscnprintf(). * runtime/sym.c (_stp_module_check): Remove hexdumping (%.*M) of mismatching buildids. Switch to _stp_warn from printk (KERN_WARNING). * translate.cxx, runtime/unwind.c: Numerous print formatting tweaks.
* cleanup: rename task_finder_target->pathname -> procnameFrank Ch. Eigler2009-08-211-2/+2
| | | | | | | | | | The previous name made it easy to misread the purpose of this field. It is only for matching executable names, not for shared libraries. * runtime/task_finder.c (task_finder_target): Rename field. (*): Adjust. * tapset-itrace.cxx, tapset-utrace.cxx, tapsets.cxx, translate.cxx: Ditto.
* PR10228: fix non-utrace building regression - cont'dWenji Huang2009-08-201-1/+1
| | | | | | | * runtime/task_finder.c (non-UTRACE): Return 0 for stap_start_task_finder. * translate.cxx (emit_module_init): Let vma tracker specific to utrace.
* PR10228: fix non-utrace building regressionFrank Ch. Eigler2009-08-191-2/+4
| | | | | | | * translate.cxx (dump_unwindsyms): Decide based on modname[] not mainfile[] to emit a vmcb. * runtime/task_finder.c (non-UTRACE): Include dummy stap_{start,stop}_* functions.
* PR10518: context shrinkage with function recursion analysis feeding MAXNESTINGFrank Ch. Eigler2009-08-181-5/+83
| | | | | | | | * translate.cxx (emit_common_header, translate_pass): Use new recursion_info visitor to calculate appropriate MAXNESTING value for scripts with or without recursion. * tapsets.cxx (common_probe_entryfn_prologue): Initialize c->nesting = -1. * stap.1.in: Clarify MAXNESTING value.
* PR10516: reduce context sizeFrank Ch. Eigler2009-08-181-3/+9
| | | | | | * translate.cxx (emit_common_header): Emit probe locals into a separate union, not into the locals[] array. (emit_probe): Adapt.
* Unlocks global variables, then calls _stp_print_flush().David Smith2009-08-171-4/+4
| | | | | * translate.cxx (c_unparser::emit_probe): Unlocks global variables, then calls _stp_print_flush() (instead of the other way around).
* PR10228: use task_finder_vma for -d /user/object files.Frank Ch. Eigler2009-08-141-2/+33
| | | | | | | | | | | | * main.cxx (main): For "-d /path" arguments, enable task finder. * runtime/sym.h (_stp_module): Add *vmcb member. * task_finder{.cxx,.h} (emit_vma_callback_probe_decl): Zap. * tapset-itrace.cxx, tapset-utrace.cxx: Use unwindsyms_modules instead. * tapsets.cxx (uprobe::emit_module_decls): Ditto. * translate.cxx (emit_module_init): Emit task finder registrations for vmcb's associated with _stp_modules. (dump_unwindsyms): Associate vmcbs with user-space unwindsyms entries.
* Simplify _ELFUTILS_PREREQ checkingJosh Stone2009-08-101-12/+2
| | | | | | | We were jumping through a few hoops to deal with elfutils < 0.138 that did not have the _ELFUTILS_PREREQ macro. I've added an always-false dummy macro to take its place when it doesn't exit. All of the other "#ifdef _ELFUTILS_PREREQ" ugliness can now go away.
* PR10486 Raise default MAXSTRINGLEN.Mark Wielaard2009-08-071-1/+10
| | | | | | | | * translate.cxx (translate_pass): Raise MAXSTRINGLEN to 256 for 32bit arches and to 512 for 64bit arches. * testsuite/systemtap.context/backtrace.tcl: Don't set MAXSTRINGLEN. * testsuite/systemtap.exelib/ustack.tcl: Likewise. * testsuite/systemtap.string/str_replace.exp: Explicitly set MAXSTRINGLEN.
* Merge branch 'master' of git://sources.redhat.com/git/systemtapDave Brolley2009-08-041-8/+8
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| * PR2049: support arbitrary $target-array indexingJosh Stone2009-08-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rather than just numeric literals, we can now support arbitrary expressions for the index value. Note that loc2c won't allow this for noncontiguous arrays, as the access methods need to be statically computed, but for contiguous arrays and pointers-as-arrays it works just fine. * staptree.h (target_symbol::component): Add expression_array_index. * staptree.cxx (target_symbol::visit_components): New helper. (target_symbol::assert_no_components): Recognize new array type. (target_symbol::component::print): Print subexpressions. (traversing_visitor::visit_target_symbol, visit_cast_op): Visit the indexing components too. (varuse_collecting_visitor::visit_target_symbol): Ditto. (update_visitor::visit_target_symbol, visit_cast_op): Ditto. * elaborate.cxx (void_statement_reducer::visit_target_symbol): New. (void_statement_reducer::visit_cast_op): Save indexes too. * parse.cxx (parser::parse_target_symbol_components): Parse expressions. * tapsets.cxx (dwarf_var_expanding_visitor::visit_target_symbol): Pass expression-indexes as parameters (indexN) to the dwarf function. (dwarf_cast_expanding_visitor::visit_cast_op): Ditto. (tracepoint_var_expanding_visitor::visit_target_symbol_arg): Ditto. (sdt_var_expanding_visitor::visit_target_symbol): Visit the new @cast. * dwflpp.cxx (dwflpp::translate_components): Use THIS->indexN. * translate.cxx (c_unparser::visit_target_symbol): Correct error msg. * testsuite/systemtap.base/pointer_array.stp: Use a simple index.
| * PR10459. Disable all warning messages on -w.Mark Wielaard2009-07-301-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | * stap.1.in: Document that -w disables all warning messages. * dwflpp.cxx (get_module_dwarf): Only output warning when session suppress_warnings is not set. * translate.cxx (dump_unwindsyms): Likewise. (emit_symbol_data_done): Likewise. * tapsets.cxx (query_module_symtab): Likewise. (read_from_elf_file): Take systemtap_session, check suppress_warnings before emitting warning. (read_from_text_file): Likewise. (get_symtab): Call read_from_elf_file and read_from_text_file with session.
* | Merge branch 'master' of git://sources.redhat.com/git/systemtapDave Brolley2009-07-081-11/+48
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| * PR3498: speed up pass-2 and pass-3 for kernel offline dwfl module searchingFrank Ch. Eigler2009-07-071-11/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * dwflpp.cxx (dwflpp ctor): Parametrize for user/kernel modes. Update callers. (dwfl_report_offline_predicate): New function. Filter and abort searches early if possible. (setup_kernel): Use new predicate. * dwflpp.h: Corresponding changes. * tapsets.cxx (dwfl_report_offline_predicate): Remove this shared implementation. (dwarf_builder): Turn kern_dw into module_name->dwflpp* map, just like user_dw. (get_kern_dw): Adapt. (dwarf_build_no_more): Adapt. * tapsets.h: Remove old shared predicate. * translate.cxx (dwfl_report_offline_predicate2): New function. Filter and abort searches early if possible. (emit_symbol_data): Use it.
* | Merge branch 'master' of git://sources.redhat.com/git/systemtapDave Brolley2009-07-011-7/+12
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| * Special case _stp_kretprobe_trampoline emission for -1Roland McGrath2009-06-301-7/+12
| | | | | | | | | | | | * translate.cxx (emit_symbol_data_done): Special case _stp_kretprobe_trampoline emission for -1, which is invalid in hex if host width > target width.
* | Merge branch 'master' of git://sources.redhat.com/git/systemtapDave Brolley2009-06-291-3/+8
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| * PR10323 Some ustack exelib.exp tests fail with prelinked shared libs.Mark Wielaard2009-06-251-3/+8
| | | | | | | | | | | | | | | | | | | | | | | | For shared libraries (.dynamic sections) we need the eh frame section address offset. This is the sh_addr if the shared library isn't prelinked (since the base load address is zero in that case), otherwise it is the module start address minus the bias (which also works for the non-prelinked case). * translate.cxx (get_unwind_data): Adjust eh_addr for module start and bias if module isn't absolute (has no relocations). * testsuite/systemtap.exelib/ustack.tcl: Accept all prelink tests.
* | Disallow embedded C in tapset functions ifor unprivileged users unless ↵Dave Brolley2009-06-251-2/+3
| | | | | | | | tagged by /* unprivileged */.
* | Merge branch 'master' of git://sources.redhat.com/git/systemtapDave Brolley2009-06-221-6/+7
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| * PR10298: tweak global param initialization for NULL etc.Frank Ch. Eigler2009-06-181-6/+7
| | | | | | | | | | * translate.cxx (translate_pass): Emit module_parm stuff at the very end. * testsuite/buildok/null.stp: New test.
* | Merge branch 'master' of git://sources.redhat.com/git/systemtapDave Brolley2009-06-111-1/+9
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| * PR10260: Clean up all resources after init errorsJosh Stone2009-06-101-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When anything in systemtap_module_init fails, and we return non-zero, then the module load is aborted. The normal module unload path (systemtap_module_exit) is not even attempted, so we need to make sure that all partially-allocated resources are returned. Our timer callbacks for the gettimeofday subsystem are a classic example of this error. If we don't unregister the timers before aborting init, they will later be called and cause a kernel fault. We also were neglecting to free the percpu context. A memory leak is less harmful, but that's fixed now too.
| * build compatibility fix for gcc 3.4Frank Ch. Eigler2009-06-091-1/+1
| | | | | | | | * translate.cxx (emit_symbol_data): Use ~0 instead of -1 for big unsigned constant
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