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* Detect kretprobe trampoline and use fallback unwinder.Mark Wielaard2009-06-034-10/+20
| | | | | | | | | | | | * runtime/sym.h (_stp_kretprobe_trampoline): Document. * translate.cxx (unwindsym_dump_context): Add stp_kretprobe_trampoline_addr. (dump_unwindsyms): Detect kretprobe_trampoline_holder symbol address. (emit_symbol_data): Initialize and emit _stp_kretprobe_trampoline. * runtime/transport/symbols.c (_stp_do_relocation): Detect kernel load address and adjust _stp_kretprobe_trampoline. * runtime/stack-i386.c (__stp_stack_print): Always use fallback unwinder when hitting kretprobe_trampoline_holder. * runtime/stack-x86_64.c (__stp_stack_print): Likewise.
* Fixed cut-and-paste error.David Smith2009-06-021-1/+1
| | | | | * runtime/task_finder.c (__stp_call_mmap_callbacks_for_task): Fixed cut-and-paste error.
* Avoid holding semaphore while making mmap callbacks.David Smith2009-06-011-52/+130
| | | | | | | | | * runtime/task_finder.c (__stp_call_mmap_callbacks_for_task): Grabs the 'mmap_sem' sempaphore. Caches vma information, releases the semaphore, then makes mmap callbacks. (__stp_utrace_task_finder_target_quiesce): Calls __stp_call_mmap_callbacks_for_task() to make mmap callbacks on initial attach to a task.
* Avoid 1 case of holding a semaphore while mmap callbacks are being made.David Smith2009-05-281-57/+75
| | | | | | | | | | * runtime/task_finder.c (__stp_call_mmap_callbacks_with_addr): Renamed from __stp_call_mmap_callbacks_with_vma(). Also added some code from __stp_utrace_task_finder_target_syscall_exit() that locks the 'mmap_sem' semaphore. This avoids holding the semaphore while the mmap callbacks are made. (__stp_utrace_task_finder_target_syscall_exit): Just calls __stp_call_mmap_callbacks_with_addr() in the mmap case.
* Restore staprun's support for REAL_UID/GIDJosh Stone2009-05-221-1/+14
| | | | | This is needed for run-stap so that stapio and all child processes can run as the originally invoking user instead of root.
* Properly read eh_frame and pass is_ehframe correctly.Mark Wielaard2009-05-201-6/+10
| | | | | | | | | * runtime/unwind.c (adjustStartLoc): Add extra dbug_unwind. (_stp_search_unwind_hdr): Always pass true for is_ehframe. (unwind_frame): Properly pass through is_ehframe to adjustStartLoc(). (unwind): Add extra dbug_unwind. * translate.cxx (dump_unwindsyms): Output and use correct eh_frame and eh_len.
* Use debug_frame table, then fallback to eh_frame when necessary.Mark Wielaard2009-05-201-24/+39
| | | | | | | * runtime/unwind.c (unwind): Call new unwind_frame() first with debug_frame data, then if that wasn't able to unwind again with eh_frame data. (unwind_frame): Adapted version of old unwind() function that takes a table, table length and whether it is an eh_frame table.
* Pass and use ptrType and is_ehframe to unwind adjustStartLoc.Mark Wielaard2009-05-201-53/+66
| | | | | | | * runtime/unwind.c (adjustStartLoc): Add ptrType and is_ehframe as arguments. Use these to adjust location when necessary. (DEBUG_UNWIND): Move block before adjustStartLoc. Pass false for is_ehframe throughout.
* Fetch and store both debug_frame and eh_frame tables.Mark Wielaard2009-05-203-19/+22
| | | | | | | | | | | | | * 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.
* PR10171 workaround.David Smith2009-05-181-0/+5
| | | | * runtime/itrace.c: To avoid ia64 lockups, disable itrace on ia64.
* PR10091 fixes.David Smith2009-05-181-0/+6
| | | | | | | | * runtime/itrace.c (usr_itrace_report_signal): Add a workaround for ppc-specific problem. * testsuite/systemtap.base/itrace.exp: Improved tests. Improved test completeness. Will also no longer give fails for systems that don't support single or block step (will give xfails instead).
* Tidy/tighten DEBUG_UNWIND ptrType a bit.Mark Wielaard2009-05-151-14/+13
| | | | | | | * runtime/unwind.c (_stp_enc_hi_name): Include prefix for hi == 0. (_stp_enc_lo_name): Don't include prefix. (_stp_eh_enc_name): Always include hi_name. (unwind): Always include newline in dbug_unwind() calls.
* Initialize aptr in runtime/map.c and keep gcc-4.4 happyAnanth N Mavinakayanahalli2009-05-131-1/+1
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* Problems using server scripts when not on PATH.Dave Brolley2009-05-061-1/+1
| | | | HAVE_NSS related compile time warning.
* Add Vim modelines for new C/C++ sourcesJosh Stone2009-05-052-0/+3
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* Module signing and verification using a separate file for the module signature.Dave Brolley2009-05-044-69/+532
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* Fixed itrace on RHEL5 (PR10091).David Smith2009-04-272-1/+52
| | | | | | | | | | PR10091 fix. * runtime/itrace.c: Includes ptrace_compatibility.h. (usr_itrace_report_quiesce): Corrected return value for original version of utrace. * runtime/ptrace_compatibility.h: Defines arch_has_single_step() and arch_has_block_step() in terms of ARCH_HAS_SINGLE_STEP and ARCH_HAS_BLOCK_STEP.
* PR10081: improve error message for verifying build-idWenji Huang2009-04-261-28/+23
| | | | | | | Output debuginfo file name and build-id if verification failed. * runtime/sym.c: Print more info if not matched.
* PR10099: Extend %M directive to support hexdumping large buffersWenji Huang2009-04-261-12/+19
| | | | | | | | | | This patch will make %M directive dump the variable width buffer in hex format instead of returning uint64_t number as before. * runtime/vsprintf.c: Modify %M directive. * stap.1.in: Update description. * testsuite/systemtap.printf/memory1.stp: Add test case.
* PR5273: uprobes_i386.c instruction tableJim Keniston2009-04-241-11/+11
| | | | | Resynch uprobes1 2-byte-opcode table with uprobes2 x86. Mostly changes a bunch of mmx instructions from rejected to accepted.
* Cache and retrieve syscall arguments when needed.David Smith2009-04-242-35/+293
| | | | | | | | | | | | * runtime/task_finder.c (__stp_utrace_task_finder_target_syscall_entry): New function that caches syscall arguments for mmap(), munmap(), and mprotect() for use in __stp_utrace_task_finder_target_syscall_exit(). (__stp_utrace_task_finder_target_syscall_exit): Uses cached syscall argument info when making callbacks. (stap_start_task_finder): Initializes map subsytem for storing syscall argument data. * runtime/task_finder_map.c: New file containing functions to save and retrieve syscall arguments.
* i386 uprobes1: enable the 0x0f 0x1_ row of opcodesJim Keniston2009-04-231-1/+1
| | | | to make sdt.exp pass
* utrace/ia64: Fix syscall_get_set_args_cb() to handle syscalls via syscall()Masami Hiramatsu2009-04-221-3/+10
| | | | | | * runtime/syscall.h (syscall_get_set_args_cb): Fix to decode user stack collectly in case of syscall(), and check the maximum number of syscall arguments.
* PR 9821: Use genuine strftime in staprun/stapioMasami Hiramatsu2009-04-221-105/+7
| | | | | | | | | | * Makefile.am: Add -fno-builtin-strftime to stapio_CFLAGS. * Makefile.in: Ditto. * runtime/staprun/common.c (stap_strfloctime): Use strftime(3). (parse_args): Remove strftime format limitation message. * main.cxx (usage): Ditto. * stap.1.in: Ditto. * staprun.8.in: Ditto.
* Merge branch 'master' of ssh://sourceware.org/git/systemtapMark Wielaard2009-04-211-1/+2
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| * Ref-count correctly when deranged handler calls do_exit().Jim Keniston2009-04-211-1/+2
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* | Merge branch 'user_unwind'Mark Wielaard2009-04-219-57/+90
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| * Add uprobes_ustack testcase and bug fixlet.Mark Wielaard2009-04-211-1/+4
| | | | | | | | | | | | * runtime/stack.c (_stp_stack_print): Use _stp_usymbol_print when tsk given. * testsuite/systemtap.base/uprobes_ustack.exp: New test file. * testsuite/systemtap.base/uprobes_ustack.stp: Likewise.
| * Add ubacktrace(), print_ustack() and print_ubacktrace().Mark Wielaard2009-04-211-0/+26
| | | | | | | | | | | | | | | | * runtime/sym.c (_stp_usymbol_print): New function. * tapset/ucontext-unwind.stp (print_ubacktrace): New tapset function. (ubacktrace): Likewise. * tapset/ucontext-symbols.stp (print_ustack): Likewise. * testsuite/buildok/ustack.stp: New test for above three functions.
| * Don't use stack fallback for user space unwinding when using dwarf unwinder.Mark Wielaard2009-04-212-8/+16
| | | | | | | | | | | | | | | | It never seems to be anywhere near correct. * runtime/stack-i386.c (__stp_stack_print): Stop unwinding when dwarf unwinder fails and we are unwinding user space task. * runtime/stack-x86_64.c (__stp_stack_print): Likewise.
| * Remove old _stp_ustack bits.Mark Wielaard2009-04-211-17/+0
| | | | | | | | | | | | This code was never used, nor did it actually work. * runtime/stack.c (_stp_ustack_print): Removed.
| * Pass task from tapset, through stack and unwind functions for lookup.Mark Wielaard2009-04-208-19/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * runtime/stack-arm.c (__stp_stack_print): Take struct task_struct *. * runtime/stack-ia64.c (__stp_stack_print): Likewise. * runtime/stack-ppc64.c (__stp_stack_print): Likewise. * runtime/stack-s390.c (__stp_stack_print): Likewise. * runtime/stack-i386.c (__stp_stack_print): Likewise. And add check and pass to unwind() and _stp_func_print(). * runtime/stack-x86_64.c: Likewise. * runtime/stack.c *_stp_stack_print): Take and pass on task_struct. (_stp_stack_snprint): Likewise. * runtime/unwind.c (unwind): Take and use task_struct for _stp_mod_sec_lookup(). * tapset/context-unwind.stp (print_backtrace): Pass NULL to _stp_stack_print(). (backtrace): Pass NULL to _stp_stack_snprint().
| * Pass task to _stp_func_print and _stp_kallsyms_lookup.Mark Wielaard2009-04-194-8/+9
| | | | | | | | | | | | | | | | | | * runtime/sym.c (_stp_func_print): Take task, pass to _stp_kallsyms_lookup. * runtime/stack.c (print_stack_address): Pass NULL. * runtime/stack-i386.c (_stp_stack_print_fallback): Pass NULL. (__stp_stack_print): Pass NULL or current. * runtime/stack-x86_64.c (_stp_stack_print_fallback): Pass NULL. (__stp_stack_print): Pass current.
| * Handle .absolute and .dynamic (user space) addresses in adjustStartLoc.Mark Wielaard2009-04-191-6/+12
| | | | | | | | | | * runtime/unwind.c (adjustStartLoc): .absolute sections don't need adjustment, .dynamic sections need the section addr to be added.
* | PR10078: uretprobes on functions returning structs/unionsJim Keniston2009-04-203-3/+36
| | | | | | | | | | arch_predict_sp_at_ret() for x86_32 now accommodates ret $4. Added bz10078 regression test.
* | Merge branch 'master' of ssh://sources.redhat.com/git/systemtapDavid Smith2009-04-202-33/+350
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| * PR7072: use _stp_reserve_bytes for printf bufferKent Sebastian2009-04-172-33/+350
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* | Uses upstream ia64 syscall functions.David Smith2009-04-202-30/+116
|/ | | | | | | | | | | | | 2009-04-20 David Smith <dsmith@redhat.com> * runtime/syscall.h (syscall_get_nr): Uses upstream version of syscall_get_nr() for ia64. (syscall_get_arguments): Ditto. (in_syscall): New ia64-only function from upstream. (syscall_get_set_args_cb): Ditto. (ia64_syscall_get_set_arguments): Ditto. * runtime/task_finder.c (stap_register_task_finder_target): Removed ia64 register cache.
* Privatize MAX_STACK_DEPTHJosh Stone2009-04-162-3/+3
| | | | | | 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.
* Improved ppc and ia64 runtime/syscall.h.David Smith2009-04-161-7/+18
| | | | | | | | | 2009-04-16 David Smith <dsmith@redhat.com> * syscall.h (syscall_get_arguments): Fixed sign extension for 32-bit processes on ppc64. (__ia64_syscall_get_arguments): Calls ia64_fetch_register() to handle NULL values. Corrected register numbers.
* PR9940: add/use unmap_u[ret]probeJim Keniston2009-04-154-14/+75
| | | | | For uprobes 1 and 2, add unmap_u[ret]probe() and define UPROBES_API_VERSION=2. Adapt tapsets.cxx accordingly.
* Merge branch 'master' of ssh://kenistoj@sources.redhat.com/git/systemtapJim Keniston2009-04-1517-520/+1291
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| * Merge branch 'dwarf_unwinder'Mark Wielaard2009-04-152-8/+8
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| | * Don't redefine STP_USE_DWARF_UNWINDER.Mark Wielaard2009-04-121-0/+2
| | | | | | | | | | | | * runtime/runtime.h: STP_USE_DWARF_UNWINDER don't redefine.
| | * Prefer dwarf unwinder on i386 and x86_64.Mark Wielaard2009-04-111-7/+5
| | | | | | | | | | | | * runtime/runtime.h: Move up and enable check for STP_USE_DWARF_UNWINDER.
| | * Fix unwind _stp_mod_sec_lookup.Mark Wielaard2009-04-101-1/+1
| | | | | | | | | | | | * runtime/unwind.c (unwind): Pass current to _stp_mod_sec_lookup().
| * | Merge branch 'sections'Mark Wielaard2009-04-152-15/+13
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| | * | Make sure addr falls inside section in _stp_mod_sec_lookup.Mark Wielaard2009-04-141-14/+10
| | | | | | | | | | | | | | | | | | | | * runtime/sym.c (_stp_mod_sec_lookup): Use section size to match addr. Only return exact matches, not just closes offset.
| | * | Only set sec in _stp_mod_sec_lookup when not NULL.Mark Wielaard2009-04-141-1/+2
| | | | | | | | | | | | | | | | * runtime/sym.c (_stp_mod_sec_lookup): Only set sec when not NULL.
| | * | Keep track of relocation section sizes.Mark Wielaard2009-04-141-0/+1
| | |/ | | | | | | | | | | | | | | | | | | | | | * runtime/sym.h (_stp_section): Add size field. * translate.cxx (dump_unwindsyms): Get start of module address space, turn seclist into vector of secname, size pairs, track relocation section size, or add module address range if no sections, output size in _stp_section list.
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