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* map through uretprobe trampoline in an arbitrary taskTim Moore2010-01-134-35/+114
| | | | | | | | | * runtime/uprobes2/uprobes.c (uprobe_get_pc_task): new function (lookup_uretprobe): new helper function (uprobe_get_pc): use it * runtime/uprobes2/uprobes.h (uprobe_get_pc_task): declare * runtime/uprobes/uprobes.c : ditto * runtime/uprobes/uprobes.h : ditto
* Removed bogus task_finder error message.David Smith2010-01-131-1/+1
| | | | | * runtime/task_finder.c (__stp_utrace_attach): No longer prints bogus error message when utrace_barrier succeeds.
* PR10493: autoconf for cpu_khzWenji Huang2010-01-131-7/+5
| | | | | | * buildrun.cxx (output_cpu_khz): New function to check cpu_khz. (compile_pass): Invoke function output_cpu_khz. * runtime/time.c : Use STAPCONF_CPU_KHZ.
* Add stack walking function for 2.6.33Wenji Huang2010-01-111-0/+14
| | | | | * runtime/stack.c (walk_context_stack): New function. (print_stack_ops): Add function pointer.
* Fixed PR 11148 by reworking transport directory locks.David Smith2010-01-081-14/+30
| | | | | | | | | | * runtime/transport/transport.c (_stp_get_root_dir): No longer locks/unlocks the transport directory. (_stp_remove_root_dir): Ditto. (_stp_transport_fs_init): Locks and unlocks the transport directory. Ensures that the root directory can't be deleted between calling _stp_get_root_dir() and creating the module dir. (_stp_transport_fs_close): Locks and unlocks the transport directory.
* Partial PR 10848 fix. Added testcase for STP_MAXMEMORY.David Smith2010-01-071-20/+21
| | | | | | | | | * runtime/alloc.c (_stp_kmalloc): Renamed 'MAXMEMORY' to 'STP_MAXMEMORY'. (_stp_kzalloc): Ditto. (_stp_vmalloc): Ditto. (_stp_alloc_percpu): Ditto. (_stp_kmalloc_node): Ditto. * testsuite/systemtap.base/maxmemory.exp: New test for STP_MAXMEMORY.
* Partial PR 10848 fix. Added '-DMAXMEMORY=NUM' processing.David Smith2010-01-051-8/+124
| | | | | | | | | | * runtime/alloc.c (_stp_mem_debug_validate): New debug function. (_stp_kmalloc): Added MAXMEMORY code to check size of memory used by module. (_stp_kzalloc): Ditto. (_stp_vmalloc): Ditto. (_stp_alloc_percpu): Ditto. (_stp_kmalloc_node): Ditto.
* bz6436 backtraces from uprobesTim Moore2010-01-055-69/+99
| | | | | | | | | | | | | | | | | | | | | This implements proper unwinding from uprobes in the presence of uretprobe trampolines. * runtime/stack.c (_stp_stack_print): Rework for uprobe context case and refactor a bit. * runtime/uprobes2/uprobes.h (GET_PC_URETPROBE_NONE): new constant * runtime/uprobes2/uprobes.c (uprobe_get_pc): Support translating the trampoline function from uprobe context in addition to uretprobe context. * runtime/uprobes/uprobes.h (GET_PC_URETPROBE_NONE): ditto * runtime/uprobes/uprobes.c (uprobe_get_pc): ditto * tapsets.cxx (uprobe_derived_probe_group::emit_module_decls): Initialize ri in context to GET_PC_URETPROBE_NONE in generated enter_uprobe_probe. * testsuite/systemtap.context/fib.stp: Add an option to do a backtrace on function entry. * testsuite/systemtap.context/fib.exp: Test backtrace in function entry (uprobe) probes.
* Remove all caching from _stp_module_relocate.Mark Wielaard2009-12-291-38/+13
| | | | | | | | | | | This function now also does user space address relocation. The connection with module loading/unloading was removed in commit 1b94bf which made all symbol tables emitted at compile time. _stp_module_relocate is called from the dwarf unwinder, and when doing some of the symbol lookup through dwflpp::emit_adress now. * runtime/sym.c (_stp_module_relocate): Remove last, last_sec and last_tsk caching and invalidation code.
* Set last_tsk in runtime/sym.c _stp_module_relocate.Mark Wielaard2009-12-291-0/+1
| | | | last_tsk was checked but never set. Noticed by Wenji Huang.
* ppc stack: transcribe portions of modern kernel ppc/.../asm/ptrace.hFrank Ch. Eigler2009-12-221-0/+18
| | | | | * runtime/stack-ppc.c (__stp_stack_print): Define STACK_FRAME_LR_SAVE, STACK_FRAME_REGS_MARKER,STACK_FRAME_MARKER, etc.
* Fixed ia64 compile problem with runtime/stack-ia64.c.David Smith2009-12-221-1/+2
| | | | * runtime/stack-ia64.c (__stp_stack_print): Added new 'ri' parameter.
* Fixed compilation on f11.David Smith2009-12-211-0/+1
| | | | * runtime/task_finder.c: Fixed last checkin.
* PR11113 fix. Support new utrace API.David Smith2009-12-213-4/+155
| | | | | | | | | | | | | | | | | | | | * tapset-utrace.cxx (utrace_derived_probe_group::emit_module_decls): Handles new utrace api. * runtime/itrace.c (usr_itrace_report_signal): Ditto. (usr_itrace_report_clone): Ditto. (usr_itrace_report_death): Ditto. * runtime/task_finder.c (__stp_utrace_task_finder_report_clone): Ditto. (__stp_utrace_task_finder_report_exec): Ditto. (__stap_utrace_task_finder_report_death): Ditto. (__stp_utrace_task_finder_target_death): Ditto. (__stp_utrace_task_finder_target_quiesce): Ditto. (__stp_utrace_task_finder_target_syscall_entry): Ditto. (__stp_utrace_task_finder_target_syscall_exit): Ditto. * runtime/uprobes2/uprobes.c (uprobe_report_signal): Ditto. (uprobe_report_quiesce): Ditto. (uprobe_report_exit): Ditto. (uprobe_report_clone): Ditto. (uprobe_report_exec): Ditto.
* PR10601: cleanup for i386, x86-64Frank Ch. Eigler2009-12-211-7/+16
| | | | | | * runtime/loc2c-runtime.h (usr_i386): Fix si/di ordering. Add ip. (usr_x86_64): Add rip. (u_*_register): Use kernel standard ARRAY_SIZE() instead of S().
* PR11015 Support shared library reloading (in different processes)Mark Wielaard2009-12-215-77/+201
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * runtime/task_finder_vma.c (stap_remove_vma_map_info): Return negative status on failure. (stap_find_vma_map_info): Likewise. (stap_find_vma_map_info_user): New function. (stap_drop_vma_maps): New function. * runtime/sym.h (addr): Renamed to static_addr, to store addresses for sections which are always mapped at the same address. (_stp_module_relocate): Add extra struct task_struct *tsk argument. * runtime/sym.c (_stp_tf_exec_cb): New callback, calls stap_drop_vma_maps. (_stp_tf_mmap_cb): Don't store address in module.section, but call stap_add_vma_map_info() per tsk->group_leader for matched module. Don't register empty/null modules. (_stp_module_relocate): Take extra struct task_struct *tsk argument, cache last tsk used. Only use section->static_addr for none dynamic modules. Use stap_find_vma_map_info_user() to locate dynamic modules. (_stp_mod_sec_lookup): Add extra argument unsigned long *rel_addr to optionally store relative address when module/section found. (_stp_kallsyms_lookup): Use _stp_mod_sec_lookup to find relative address. (_stp_sym_init): Register _stp_tf_exec_cb in stap_task_finder_target. Add error check to see if task finder could be initialized. * dwflpp.cxx (emit_address): Pass NULL for kernel/modules and current for user tasks to _stp_module_relocate. * runtime/transport/symbols.c (_stp_do_relocation): Set new static_addr _stp_section field. * runtime/unwind.c (adjustStartLoc): Take new struct task_struct *tsk argument and pass to stap_find_vma_map_info_user and _stp_module_relocate to find adjusted addr. (_stp_search_unwind_hdr): Pass through struct task_struct *tsk. (unwind_frame): Likewise. * tapset/context-symbols.stp (probemod): Add NULL to _stp_mod_sec_lookup call to indicate we aren't interested in relative address. * tapsets.cxx (dwarf_derived_probe_group::emit_module_init): Pass NULL to _stp_module_relocate to indicate kernel/module address.
* brown paper bag typo fixyFrank Ch. Eigler2009-12-201-1/+1
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* runtime: more build fix for non-utrace kernelsFrank Ch. Eigler2009-12-202-1/+3
| | | | | | * runtime/stack-i386.c (_stp_stack_print): Make call to uprobe_get_pc() conditional on CONFIG_UTRACE. * runtime/stack-x86_64.c: Ditto.
* PR10601: unfork deref()Frank Ch. Eigler2009-12-201-22/+16
| | | | | * runtime/loc2c-runtime.h: Remove k_ vs u_[store_]deref; share instead. * tapsets.cxx: Remove k_ vs u_ redirection for *deref().
* runtime: rhel4 build fix for uretprobe-wannabe stack tracebacksFrank Ch. Eigler2009-12-201-1/+3
| | | | * runtime/stack.c (_stp_stack_print): Comment out *retprobe logic if !CONFIG_UTRACE.
* runtime backtracing: port commit #2e7f8442 to uprobes1Frank Ch. Eigler2009-12-203-2/+46
| | | | * runtime/uprobes/uprobes.c (uprobe_get_pc): new function
* PR10601 cont'd, RHEL5 backward compatibility with more runtime/autoconf*Frank Ch. Eigler2009-12-203-5/+35
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* PR10601 part 1: i386 and x86-64 regset for dwarf fetch/store_register()sFrank Ch. Eigler2009-12-201-85/+300
| | | | | | | | | | * runtime/loc2c-runtime.h (fetch_register, store_register): forked into k_ (kernel) and u_ (user) varieties. Implement i386 and x86_64 in terms of regset.h; fall back to k_* for other architectures. * tapsets.cxx: (*::visit_target_symbol): Emit macros to map loc2c's fetch/store_register to loc2c-runtime's k_ or u_ as appopriate.
* Remove uprobes.h declaration from runtime.hTim Moore2009-12-184-12/+16
| | | | | | | | | | | Turns out that it breaks on kernels that don't have utrace. * runtime/runtime.h : Don't include uprobes.h * runtime/stack.c: Include uprobes.h * runtime/stack-i386.c: Check if uprobes is included at all. * runtime/stack-x86_64.c: ditto * tapsets.cxx (uprobe_derived_probe_group::emit_module_decls): put uprobes.h include back in.
* support for a brief backtrace formatTim Moore2009-12-175-14/+46
| | | | | | | | | | | | | | This only prints symbol+offset, or an address if the symbol isn't known. * runtime/runtime.h (SYM_VERBOSE_NO, SYM_VERBOSE_FULL, SYM_VERBOSE_BRIEF): new constants * runtime/stack.c (_stp_stack_print): support brief format * runtime/sym.c (_stp_func_print): ditto * tapset/ucontext-unwind.stp (print_ubacktrace_brief): new function * testsuite/systemtap.context/fib.c: new test program * testsuite/systemtap.context/fib.stp: new test * testsuite/systemtap.context/fib.exp: new test
* backtrace through uprobes trampoline.Tim Moore2009-12-176-6/+26
| | | | | | | | | | | | | | Only works in uretprobes for the moment. * runtime/stack-x86_64.c (__stp_stack_print): Rewrite trampoline PC addresses if necessary. * runtime/stack-i386.c (__stp_stack_print): ditto * runtime/stack-arm.c (__stp_stack_print): Add extra argument * runtime/stack-ppc.c (__stp_stack_print): ditto * runtime/stack-s390.c (__stp_stack_print): ditto * runtime/stack.c (_stap_stack_print): call __stp_stack_print with uretprobe_instance. * testsuite/systemtap.context/uprobe_backtrace.stp: new test
* function to translate from the uretprobe trampoline back to the originalTim Moore2009-12-162-0/+46
| | | | | | return address * runtime/uprobes2/uprobes.c (uprobe_get_pc): new function
* set the IP in return probes to the returned-to instructionTim Moore2009-12-162-3/+19
| | | | | | | | | | | | | | | | | | | | | | | | 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
* Merge branch 'master' of ssh://sources.redhat.com/git/systemtapDave Brolley2009-12-151-18/+35
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| * Fixed DEBUG_MEM debug memory tracking.David Smith2009-12-151-18/+35
| | | | | | | | | | | | | | | | | | * runtime/alloc.c (_stp_kmalloc): Fixed compilation when DEBUG_MEM is defined. Improved allocated memory tracking. (_stp_kzalloc): Ditto. (_stp_vmalloc): Ditto. (_stp_alloc_percpu): Ditto. (_stp_kmalloc_node): Ditto.
* | Merge branch 'master' of ssh://sources.redhat.com/git/systemtapDave Brolley2009-12-147-45/+51
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| * Do not use condition_codes() on armEugeniy Meshcheryakov2009-12-131-1/+1
| | | | | | | | | | | | | | | | | | It does not exist in recent kernels. Use regs->ARM_cpsr instead, this should work with all versions of linux found in git repo (versions >=2.6.12-rc2). Difference between condition_codes() and regs->ARM_cpsr should not matter for systemtap.
| * runtime build: fix alloc.c buildability on old gcc 3.4Frank Ch. Eigler2009-12-111-2/+2
| | | | | | | | * runtime/alloc.c (_stp_kmalloc): Move var decl back to top.
| * runtime: undefine DEBUG_MEM, retain alloc countingFrank Ch. Eigler2009-12-101-9/+10
| | | | | | | | | | | | | | DEBUG_MEM can & does evoke locking timeouts. * runtime/alloc.c (*): Track __stp_allocated_memory regardless of DEBUG_MEM.
| * runtime: print stp_alloc statistics in startup printkFrank Ch. Eigler2009-12-102-20/+13
| | | | | | | | | | * runtime/alloc.c: Define DEBUG_MEM. * runtime/print.c (_stp_print_kernel_info): Reformat/rescale mem values.
| * Fix regression in statistic operationsAnton Vorontsov2009-12-091-6/+12
| | | | | | | | | | | | | | | | | | | | | | In commit 98c783852039061db8c1611742660aaded0eab77 ("Use proper types for do_div") I imprudently changed some variables to an unsigned type while in some places the code actually relies on a sign. So, let's be a bit smarter now and use temporary variables. Reported-by: Wenji Huang <wenji.huang@oracle.com> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
| * PR 10848 partial fix by using systemtap memory functions everywhere.David Smith2009-12-092-8/+12
| | | | | | | | | | | | | | * runtime/addr-map.c (add_bad_addr_entry): Uses systemtap memory allocation/deallocation wrappers. * runtime/itrace.c (create_itrace_info): Ditto. (remove_usr_itrace_info): Ditto.
| * PR11020: Check switch_file global flag inside inner loop for busy scriptsMasami Hiramatsu2009-12-031-2/+4
| | | | | | | | | | * runtime/staprun/relay.c (reader_thread): Check switch_file thread flags inside inner read-write loop. And clear the flags after switching file.
* | Clean up NSS after errors occur during verification.Dave Brolley2009-12-141-0/+3
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* Regenerate autotools files using autoreconf to pick up latest Makefile.am ↵Dave Brolley2009-12-012-2/+4
| | | | changes.
* Merge branch 'master' of ssh://sources.redhat.com/git/systemtapDave Brolley2009-12-0115-28/+65
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| * uprobes ppc64: UPROBES_DEBUG build fixFrank Ch. Eigler2009-12-011-2/+2
| | | | | | | | * runtime/uprobes/uprobes_ppc.c (calc_offset): Fix printk types.
| * Use proper types for do_divAnton Vorontsov2009-12-012-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | do_div accepts unsigned 64-bit integer type for dividend, signed types would cause do_div's typecheck fail: stat-common.c: In function 'needed_space': stat-common.c:50: error: comparison of distinct pointer types lacks a cast ...same errors in time.c and tapset-timers.cxx's generated code... A fix for time.c is special, on ppc32 cycles_t is 32-bit, so technically we don't need do_div, but since the whole _stp_gettimeofday_ns() operates on 64-bit types we'd better be safe and use uint64_t for the math. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
| * Change KERNEL_RELOC_SYMBOL to "_stext" on ppc32Anton Vorontsov2009-12-011-1/+1
| | | | | | | | | | | | | | | | Currently staprun fails at send_relocation_kernel(), this is because ppc32 doesn't have ".__start" symbol. I think we should use _stext, just as other arches. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
| * Implement _div64 and _mod64 for ppc32Anton Vorontsov2009-12-011-3/+39
| | | | | | | | | | | | | | _div64 and _mod64 arch-specific details were taken from gcc/longlong.h, just as it was done for i386. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
| * Share ppc64 and ppc32 code where possibleAnton Vorontsov2009-12-013-5/+5
| | | | | | | | | | | | | | | | | | | | * runtime/copy.c: Can use ppc64's code. * runtime/regs.h: Ditto. * runtime/string.h: Ditto. * tapset/context.stp: Ditto. * tapset/errno.stp: Ditto. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
| * stack-ppc: Adjust for ppc32Anton Vorontsov2009-12-012-3/+3
| | | | | | | | | | | | | | | | Get rid of magic numbers, use appropriate defines from ptrace.h. From now on stack-ppc.c should be suitable for ppc32. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
| * Rename stack-ppc64.c to stack-ppc.cAnton Vorontsov2009-12-012-1/+1
| | | | | | | | | | | | There should be no functional changes in this patch. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
| * Rename uprobes_ppc64.c to uprobes_ppc.c, use it for ppc32Anton Vorontsov2009-12-016-8/+8
| | | | | | | | | | | | | | The code *looks* generic enough, so I think it can be used for ppc32 without modifications. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
* | Make sure system types are defined.Dave Brolley2009-12-012-5/+7
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