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PR 4224.
* tapsets.cxx (add_probe_point): Make kernel implicitly relocated
relative to the _stext symbol.
(dwarf_derived_probe ctor, emit_module_decls): Cooperate.
(lookup_symbol_address): New function.
(dwarf_builder::build): Call it thrice.
(in_kprobes_function): Simplify.
* session.h (systemtap_session): Rename cached symbol addresses.
* translate.cxx, elaborate.cxx: Corresponding tweaks.
2007-03-20 Frank Ch. Eigler <fche@elastic.org>
PR 4224.
* sym.c (_stp_module_relocate): Support kernel relocations.
2007-03-20 Frank Ch. Eigler <fche@elastic.org>
* symbols.c (_stp_do_symbols): Add cautionary blurb for important
setup of _stp_modules[0]->text.
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PR 3965
* configure.ac: Add --enable-prologue option.
* configure, config.in: Regenerated.
* session.h (prologue_searching): New field.
* main.cxx (main): Parse new "-P" option. Initialize based on
autoconf flag.
* stap.1.in, NEWS: Document it.
* hash.cxx (find_hash): Include it in computation.
* tapsets.cxx (query_func_info, query_cu): Respect it.
2007-02-09 Frank Ch. Eigler <fche@elastic.org>
* systemtap.base/prologue.*: New test case.
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PR 3522.
* tapsets.cxx (dwflpp::emit_address): Call
_stp_module_relocate only once per session.
Error message cleanup: duplicate elimination etc.
* session.h (saved_errors): Store a set of 'em.
(num_errors): Return set size. Remove old numeric field.
Update all callers.
* elaborate.cxx (systemtap_session::print_errors):
Print each encountered message just once.
* staptree (semantic_error): Make msg2 writeable.
Add a chain field.
* tapsets.cxx (*var_expanding*:visit_target_symbol): Set saved
semantic_error's chain field.
* elaborate.cxx (register_library_aliases, visit_foreach_loop,
visit_functioncall, derive_probes): Plop "while: ..." error
message prefix/suffix right into the semantic_error message string.
* parse.cxx (lexer::scan): Identify erroneous token better
in error message for unresolvable $N/@M command line args.
* util.h (lex_cast_hex): Use std::hex, not std::ios::hex.
2006-12-19 Frank Ch. Eigler <fche@redhat.com>
PR 3522.
* buildok/twentyfive.stp: New test for static $var access.
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Probe registration rework. Offline dwarf processing for better
cross-instrumentation.
* elaborate.h (derived_probe): Remove registration-related code
generation API. Add new function sole_location().
(derived_probe_group): Reworked this and associated classes.
* session.h (systemntap_session): Create individual per-category
derived_probe_groups.
* elaborate.cxx (derived_probe_group): Reworked.
(alias_derived_probe): Switch to new derived_probe API.
(semantic_pass_symbols): Ditto.
* translate.cxx (mapvar init): Check for array initialization error.
(emit_module_init): Handle such failures, at least in theory.
(emit_module_exit): Switch to new derived_probe_group API. Call
cpu_relax() during shutdown busywait.
(emit_common_header): Elide context variables for elided handler fns.
(c_unparser::emit_probe): Implement new, improved duplicate
elimination technique for probe handlers. Leave two older ones
behind as compile options for education.
* tapsets.cxx (*): Reworked all probe registration code, moving
it from derived_probes into derived_probe_groups. Shrunk output
code. Temporarily disabled probe timing and perfmon/mark probes.
(dwflpp): Use offline reporting, so that module matching and
relocation is performed at run time.
(dwarf_query): Remove flavour logic, now supplanted by other
duplicate elimination code.
(dwarf_derived_probe): Reworked construction, centralized
module/section/offset computations.
* tapsets.h (all_session_groups): New little helper.
* main.cxx (main): For pass-2 message, print number of embeds too.
* systemtap.spec.in: Add a "BuildRequires: dejagnu" for make check.
* configure.ac: Bump version to 0.5.11.
* configure: Regenerated.
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* main.cxx (printscript): New function containing code moved from
main().
(main): Added code to create cache directory, call function to
generate hash, and see if we can use cached source/module. If
pass 4 is actually run to produce a new module, we call
add_to_cache() to cache the result.
* session.h (struct systemtap_session): Added hash/cache session
data.
* cache.cxx: New file handling adding/getting files from the
cache.
* cache.h: New header file for cache.cxx.
* hash.cxx: New file containing C++ wrapper for routines in
mdfour.c and the find_hash function which computes the hash file
name for an input script.
* hash.h: New header file for hash.cxx.
* mdfour.c: New file containing MD4 hash code.
* mdfour.h: New header file for mdfour.c.
* util.cxx: New file containing several utility functions used by
the caching code.
* util.h: New header file for util.cxx.
* Makefile.am: Added new C/C++ files.
* Makefile.in: Regenerated.
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* tapsets.cxx (in_kprobes_function): New function that looks up
the values of '__kprobes_text_start' and '__kprobes_text_end' in
the kernel to be able to automatically exclude functions marked as
'__kprobes' (BZ# 2639).
(blacklisted_p): Calls in_kprobes_function().
(query_kernel_module): Utility function that finds the kernel module.
* session.h (struct systemtap_session): Added kprobes_text
variables - kprobes_text_initialized, kprobes_text_start, and
kprobes_text_end.
* elaborate.cxx (systemtap_session::systemtap_session):
kprobes_text variables get initialized.
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* session.h (struct systemtap_session): Add kernel_base_release
to store the kernel version without the -NNN suffix.
* main.cxx (main): Generate and use kernel_base_release.
* parse.cxx (eval_pp_conditional): Use kernel_base_release.
* tapsets.cxx (profile_derived_probe::profile_derived_probe):
Use kernel_base_release.
* tapsets.cxx (timer_builder::build): Support a wide variety of
timer varients -- jiffies, s/sec, ms/msec, us/usec, ns/nsec, and
hz. Use hrtimers automatically on kernels that have it.
(timer_builder::register_patterns): Bind all of the new timer
varients in one easy place.
(register_standard_tapsets): Call timer_builder::register_patterns.
(struct hrtimer_builder): Removed since timer_builder is generic.
* stapprobes.5.in: Document new timer.* functionality.
* tapsets.cxx (hrtimer_derived_probe_group::emit_probes): Add a
shared global for the actual hrtimer resolution, _stp_hrtimer_res.
(hrtimer_derived_probe_group::emit_module): Init _stp_hrtimer_res.
(hrtimer_derived_probe::emit_interval): Limit intervals at a
minimum to the hrtimer's actual resolution.
(hrtimer_derived_probe::emit_probe_entries): Forward timers
based on previous expiration instead of restarting relative.
testsuite/
* buildok/fourteen.stp: Test new timer functionality.
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* translate.cxx: Added inclusion of session.h.
(translate_pass): Instead of asking each probe to emit itself, we
ask the session's probes member variable to emit all the probes.
* tapsets.cxx: Added inclusion of session.h. Added a
register_probe member function to all derived_probe based
classes. Added a derived_probe_group derived class for all probe
types:
(be_derived_probe_group): New class.
(never_derived_probe_group): New class.
(dwarf_derived_probe_group): New class.
(timer_derived_probe_group): New class.
(profile_derived_probe_group): New class.
(mark_derived_probe_group): New class.
(hrtimer_derived_probe_group): New class
(derived_probe_group_container): New class.
* elaborate.h: Removed inclusion of session.h since session.h now
includes elaborate.h.
(derived_probe): Added register_probe member function.
(derived_probe_group): Added class definition. This is the base
class of all of the derived probe groups - dwarf, timer, etc.
(derived_probe_group_container): Added class definition. An
instance of this class will be stored in the session and contain
all the other probe groups.
* elaborate.cxx (derived_probe_group::register_probe): Added
derived_probe_group::register_probe stubs.
(alias_derived_probe::register_probe): Added register_probe member
function.
(semantic_pass_symbols): After deriving a probe, the probes now
register themselves with the session.
* session.h: Includes elaborate.h to get
derived_probe_group_container definition. systemtap_session class
'probes' member variable switched from a vector of derived probes
to a derived_probe_group_container.
* buildrun.cxx: Added inclusion of session.h since it was removed
from elaborate.h.
* main.cxx: Added inclusion of session.h since it was removed
from elaborate.h.
* parse.h: Added forward struct declarations.
* staptree.h: Removed inclusion of session.h.
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the average amount of time spent in the probe.
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* main.cxx: Make "-v" (verbose) flag a counter.
* stap.1.in: Document this.
* session.h: Corresponding changes.
* {elaborate,buildrun,tapsets,translate}.cxx: Update all uses of
verbose flag to compare it to sensible level for value of message.
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PR 2060 etc.
* tapsets.cxx (visit_target_symbol): Tolerate failed resolution by
letting target_symbol instance pass through to optimizer and
type checker.
* elaborate.cxx (semantic_pass_optimize): New family of functions and
associated visitor classes.
(visit_for_loop): Tolerate absent init/incr clauses.
(semantic_pass): Invoke unless unoptimized (-u) option given.
* main.cxx, session.h: Add support for flag.
* staptree.cxx (visit_for_loop): Tolerate absent init/incr clauses.
(traversing_visitor::visit_arrayindex): Visit the index expressions.
(functioncall_traversing_visitor): New class.
(varuse_tracking_visitor): New class.
* staptree.h: Corresponding changes.
* parse.cxx (parse_for_loop): Represent absent init/incr expressions
with null statement pointer instead of optimized-out dummy numbers.
* stap.1.in: Document optimization.
* testsuite/{semko,transko}/*.stp: Added "-u" or other code to many
tests to check bad code without optimizer elision.
* testsuite/semok/optimize.stp: New test.
* elaborate.cxx (unresolved, invalid, mismatch): Standardize error
message wording.
* stapfuncs.5.in: Tweak print/printf docs.
* tapset/logging.stp: Remove redundant "print" auxiliary function,
since it's a translator built-in.
* testsuite/transok/five.stp: Extend test.
* translate.cxx (emit_symbol_data): Put symbol table into a separate
temporary header file, to make "-p3" output easier on the eyes.
* buildrun.cxx (compile_pass): Eliminate test-mode support throughout.
* main.cxx, session.h, translate.cxx: Ditto.
* main.cxx (main): For last-pass=2 runs, print post-optimization ASTs.
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PR 1903
* parse.cxx (eval_pp_conditional): Support %( arch == "i686" %) form.
* stap.1.in: Document it.
* testsuite/parseok/fourteen.stp: Test it.
* session.h (architecture): New field.
* main.cxx (main): Initialize it.
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* elaborate.h (get_symbol_within_expression): Make visible.
* elaborate.cxx (get_symbol_within_expression): Make non-static.
(stat_decl_collector): New struct.
(semantic_pass_stats): New semantic pass.
(semantic_pass): Call it.
(semantic_pass_symbols): Remove collection of statistic_decls from files.
(visit_stat_op): Only fail if inferred type is not pe_long.
* parse.cxx (parser::parse): Don't pass per-file statistic_decl
into parse_global.
(parser::parse_global): Don't parse global statistic_decls,
they're obsolete.
* parse.hh (parser::parse_global): Adjust signature to match.
* session.h (statistic_decl::operator==): New method.
* staptree.h (print_format::is_empty): New method.
(stapfile::stat_decls): Remove field.
* staptree.cxx (string_to_components): Fix bugs in format-string
parser.
* translate.cxx (var): Make private fields protected.
(var::init): Support HIST_NONE stats.
(aggvar): New struct.
(mapvar::is_parallel): New method.
(mapvar::call_prefix): Use it.
(mapvar::calculate_aggregate): New method.
(mapvar::fetch_existing_aggregate): New method.
(mapvar::get): Support pe_stats.
(mapvar::init): Use is_parallel(), and support HIST_NONE.
(itervar::itervar): Only fault on pe_unknown.
(itervar::start): Use mapvar::is_parallel and
mapvar::fetch_existing_aggregate.
(emit_map_type_instantiations): Include alloc.c before pmap-gen.c.
Include pmap-gen.c for pe_stats maps.
(c_unparser::gensym_aggregate): New method.
(c_unparser::visit_foreach_loop): Handle mapvar::is_parallel case.
(arrayindex_downcaster): New struct.
(expression_is_arrayindex): New function.
(c_tmpcounter::visit_stat_op): New method.
(c_unparser::visit_stat_op): Implement.
(c_unparser::visit_hist_op): Add commentary, still not implemented.
* testsuite/buildok/stat_{insert,extract}.stp: New tests.
* testsuite/semok/ten.stp: Correct for changes to global declarations.
* testsuite/semko/*.stp: Likewise.
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PR 1425.
* configure.ac: Look for rpm-devel headers and libs.
* configure: Regenerated.
* session.h: New file to contain systemtap_session decl.
* staptree.h: Likewise evict statistics_decl.
* elaborate.h: Corresponding changes.
* main.cxx (usage): Elaborate. Re-enable "-r RELEASE" option.
* parse.cxx (parser): Add systemtap_session& field. Update users.
(scan_pp, eval_pp_conditional): New routines for preprocessing.
(peek, next): Call it.
(lexer::scan): Lex the preprocessor operators.
(parser::parse): Include an extra level of exception catching
for parse errors that occur during recovery.
* parse.h: Corresponding changes.
(parse_error): Allow explicit token parameter.
* stap.1.in: Document preprocessing.
* testsuite/parseok/fourteen.stp: New test.
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