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2021-08-21db: Add show vmstat commandSamuel Thibault
with an output similar to the userland vmstat command * vm/vm_page.c (db_show_vmstat): New function. * vm/vm_page.h (db_show_vmstat): New prototype. * ddb/db_command.c (db_show_cmds): Add vmstat command.
2021-04-04SMP: Fix warningsSamuel Thibault
2020-04-06ddb: Add 64bit support to memory examinationSamuel Thibault
* ddb/db_examine.c(db_examine): Add q modifier to examine 64bit values. * doc/mach.texi (examine): Document q modifier.
2019-11-10Fix build warningSamuel Thibault
* ddb/db_command.c: Include <ipc/mach_port.h>.
2017-08-27ddb: More gracefully handle address errorsSamuel Thibault
* i386/i386/db_interface.h (db_read_bytes): Return boolean_t instead of void. * i386/i386/db_interface.c (db_user_to_kernel_address): Return -1 instead of calling db_error() if address is bogus. (db_read_bytes): Return FALSE instead of calling db_error() if address is bogus. * ddb/db_access.c (db_get_task_value): Return 0 if db_read_bytes failed. * ddb/db_examine.c (db_xcdump): Only print * if db_read_bytes failed.
2017-08-12ddb: Add magic variable $mapXX.Justus Winter
Maps '$mapXX' to a VM map structure address. @var{xx} is a task identification number printed by a @code{show all tasks} command. * ddb/db_task_thread.c (db_get_map): New function. * ddb/db_task_thread.h (db_get_map): New declaration. * ddb/db_variables.c (db_vars): Add new variable. * doc/mach.texi: Document this.
2017-08-05ddb: debug traps and port referencesJustus Winter
* ddb/db_command.c (db_debug_all_traps_cmd): New declaration and function. (db_debug_port_references_cmd): Likewise. * doc/mach.texi: Describe new commands. * i386/i386/db_interface.h (db_debug_all_traps): New declaration. * i386/i386/trap.c (db_debug_all_traps): New function. * ipc/mach_port.c (db_debug_port_references): New function. * ipc/mach_port.h (db_debug_port_references): New declaration.
2017-08-05ddb: Print scheduling information.Justus Winter
* ddb/db_print.c (OPTION_SCHED): New macro. (db_print_thread): Display scheduling information if the flag is given. (db_print_task): Adapt. (db_show_all_threads): Parse new modifier. (db_show_one_thread): Likewise. * doc/mach.texi: Document the new flag.
2016-12-24VM: rework map entry wiringRichard Braun
First, user wiring is removed, simply because it has never been used. Second, make the VM system track wiring requests to better handle protection. This change makes it possible to wire entries with VM_PROT_NONE protection without actually reserving any page for them until protection changes, and even make those pages pageable if protection is downgraded to VM_PROT_NONE. * ddb/db_ext_symtab.c: Update call to vm_map_pageable. * i386/i386/user_ldt.c: Likewise. * ipc/mach_port.c: Likewise. * vm/vm_debug.c (mach_vm_region_info): Update values returned as appropriate. * vm/vm_map.c (vm_map_entry_copy): Update operation as appropriate. (vm_map_setup): Update member names as appropriate. (vm_map_find_entry): Update to account for map member variable changes. (vm_map_enter): Likewise. (vm_map_entry_inc_wired): New function. (vm_map_entry_reset_wired): Likewise. (vm_map_pageable_scan): Likewise. (vm_map_protect): Update wired access, call vm_map_pageable_scan. (vm_map_pageable_common): Rename to ... (vm_map_pageable): ... and rewrite to use vm_map_pageable_scan. (vm_map_entry_delete): Fix unwiring. (vm_map_copy_overwrite): Replace inline code with a call to vm_map_entry_reset_wired. (vm_map_copyin_page_list): Likewise. (vm_map_print): Likewise. Also print map size and wired size. (vm_map_copyout_page_list): Update to account for map member variable changes. * vm/vm_map.h (struct vm_map_entry): Remove `user_wired_count' member, add `wired_access' member. (struct vm_map): Rename `user_wired' member to `size_wired'. (vm_map_pageable_common): Remove function. (vm_map_pageable_user): Remove macro. (vm_map_pageable): Replace macro with function declaration. * vm/vm_user.c (vm_wire): Update call to vm_map_pageable.
2016-05-23Fix getting ELF symbol bind and typeSamuel Thibault
ddb/db_elf.c (elf_db_search_symbol): Use ELF32_ST_BIND and ELF32_ST_TYPE to access symbol bind and type.
2016-05-18Fix gcc-6 warningsSamuel Thibault
* ddb/db_elf.c (elf_db_sym_init): Turn `i' into unsigned. * device/ds_routines.c (ds_device_open, device_writev_trap): Likewise. * i386/i386/user_ldt.c (i386_set_ldt): Likewise for `i', `min_selector', and `first_desc'. (i386_get_ldt): Likewise for `ldt_count'. (user_ldt_free): Likewise for `i'. * i386/i386/xen.h (hyp_set_ldt): Turn `count' into unsigned long. * i386/intel/pmap.c (pmap_bootstrap): Turn `i', `j' and 'n' into unsigned. (pmap_clear_bootstrap_pagetable): Likewise for `i' and `j'. * ipc/ipc_kmsg.c (ipc_msg_print): Turn `i' and `numwords' into unsigned. * kern/boot_script.c (boot_script_parse_line): Likewise for `i'. * kern/bootstrap.c (bootstrap_create): Likewise for `n' and `i'. * kern/host.c (host_processors): Likewise for `i'. * kern/ipc_tt.c (mach_ports_register): Likewise. * kern/mach_clock.c (tickadj, bigadj): turn into unsigned. * kern/processor.c (processor_set_things): Turn `i' into unsigned. * kern/task.c (task_threads): Likewise. * kern/thread.c (consider_thread_collect, stack_init): Likewise. * kern/strings.c (memset): Turn `i' into size_t. * vm/memory_object.c (memory_object_lock_request): Turn `i' into unsigned. * xen/block.c (hyp_block_init): Use %u format for evt. (device_open): Drop unused err variable. (device_write): Turn `copy_npages', `i', `nbpages', and `j' into unsigned. * xen/console.c (hypcnread, hypcnwrite, hypcnclose): Turn dev to dev_t. (hypcnclose): Return void. * xen/console.h (hypcnread, hypcnwrite, hypcnclose): Fix prototypes accordingly. * xen/evt.c (form_int_mask): Turn `i' into int. * xen/net.c (hyp_net_init): Use %u format for evt. (device_open): Remove unused `err' variable.
2016-05-17Revert "Fix getting ELF symbol bind and type"Samuel Thibault
This reverts commit a8a52cafb5621b475737ffdc81f63703d5b37904. It seems to be breaking backtracing in ddb...
2016-05-15Fix warningRichard Braun
ddb/db_output.c (db_printf): Return 0. ddb/db_printf.h (db_printf): Change declaration to return an int.
2016-03-19Fix getting ELF symbol bind and typeSamuel Thibault
ddb/db_elf.c (elf_db_search_symbol): Use ELF32_ST_BIND and ELF32_ST_TYPE to access symbol bind and type.
2015-09-29ddb: fix line formattingJustus Winter
* ddb/db_output.c (db_putchar): Fix off-by-one, allowing one more character to be printed before the newline is inserted.
2015-09-29ddb: add new command `show slabinfo'Justus Winter
* ddb/db_command.c (db_show_cmds): Add `slabinfo'. * kern/slab.c (slab_info): Generalize so that it can be used with different printf-like functions, and turn it into a static function. (slab_info): New wrapper retaining the old behaviour. (db_show_slab_info): New wrapper that uses `db_printf' instead. * kern/slab.h (db_show_slab_info): New declaration.
2015-08-17kern: disable the simple lock checks while debuggingJustus Winter
* kern/lock.c (do_check_simple_locks): New variable. (check_simple_locks): Make check conditional. (check_simple_locks_{en,dis}able): New functions. * kern/lock.h (check_simple_locks_{en,dis}able): New declarations. * ddb/db_trap.c (db_task_trap): Disable simple lock checks.
2015-06-28ddb: automatically display stack tracesJustus Winter
* ddb/db_trap.c (db_task_trap): Automatically display stack traces if an unexpected trap occurs.
2015-05-20ipc: replace the IPC table with a radix treeJustus Winter
Currently, the port names are mapped to an IPC object (e.g. a port) using a table. This, however, requires large chunks of continuous memory, and leads to scalability problems as virtual kernel memory is a scarce resource. To avoid excessive overhead, non-contiguous port names are spilled into a splay tree. Replace the IPC table with a radix tree. As the radix tree is able to store non-contiguous names with reasonable overhead, we can drop the splay tree as well. * ipc/ipc_entry.c (ipc_entry_tree_collision): Remove function. (ipc_entry_cache): New variable. (ipc_entry_lookup): Replace with a radix tree lookup. (ipc_entry_get): The free list handling is changed a little. Adopt accordingly. (ipc_entry_free_name): New function. (ipc_entry_alloc): Adopt accordingly. (ipc_entry_alloc_name): Likewise. (ipc_entry_dealloc): Likewise. (ipc_entry_grow_table): Remove function. * ipc/ipc_entry.h (struct ipc_entry): Update comment, add field for name and free list, remove unused fields. (ipc_entry_cache, ie_alloc, ie_free): New declarations. (struct ipc_tree_entry): Remove. Also remove any related declarations. (ipc_entry_grow_table): Remove declaration. * ipc/ipc_init.c (ipc_bootstrap): Adopt initialization. * ipc/ipc_kmsg.c (ipc_kmsg_copyout_header): Use `ipc_entry_alloc' instead of re-coding it. Adopt free list handling. (ipc_kmsg_copyout_object): Adopt free list handling, store the name. * ipc/ipc_object.c (ipc_object_copyout): Likewise. (ipc_object_copyout_multiname): Likewise. * ipc/ipc_space.c (ipc_space_create): Initialize radix tree and free list. Drop table and splay tree initialization. (ipc_space_destroy): Free ipc entries and radix tree, remove table and splay tree cleanup. * ipc/ipc_space.h (struct ipc_space): Add radix tree, free list, and size. Remove all fields related to the table and splay tree. * ddb/db_print.c (db_port_iterate): Adopt iteration. (db_lookup_port): Adopt lookup. * include/mach_debug/ipc_info.h: Remove unused parts of the debug interface. * include/mach_debug/mach_debug.defs: Likewise. * include/mach_debug/mach_debug_types.defs: Likewise. * ipc/mach_debug.c: Likewise. * ipc/ipc_right.c (ipc_right_reverse): Adopt lookup, store name. (ipc_right_check): Adopt removal. (ipc_right_destroy): Likewise. (ipc_right_dealloc): Likewise. (ipc_right_delta): Likewise. (ipc_right_copyin): Adopt insertion, adopt removal. (ipc_right_copyin_two): Adopt removal. (ipc_right_copyout): Adopt insertion, adopt removal. (ipc_right_rename): Likewise, also update comment. * ipc/mach_port.c (mach_port_names): Adopt iteration. (mach_port_get_set_status): Likewise. * ipc/port.h: Update comment. * ipc/ipc_hash.c: Delete file. * ipc/ipc_hash.h: Likewise. * ipc/ipc_splay.c: Likewise. * ipc/ipc_splay.h: Likewise. * Makefrag.am (libkernel_a_SOURCES): Remove these files.
2015-01-02ddb: Fix typos in comments (found by codespell)Stefan Weil
Signed-off-by: Stefan Weil <sw@weilnetz.de>
2014-09-17ddb: add support for ELF symbol tablesJustus Winter
* ddb/db_elf.c: New file. * ddb/db_elf.h: Likewise. * Makefrag.am (libkernel_a_SOURCES): Add db_elf.{c,h}. * ddb/db_sym.c (dummy_db_sym_init): New stub db_sym_init function. (db_sym_switch): Add ELF functions. * ddb/db_sym.h (SYMTAB_ELF): New macro. (elf_db_sym_init): New declaration. * i386/i386at/model_dep.c (c_boot_entry): Get ELF section header information from the multiboot structure, and call elf_db_sym_init.
2014-09-17ddb: add `show all tasks' commandJustus Winter
* ddb/db_command.c (db_show_all_cmds): Add `tasks'. * ddb/db_print.c (db_show_all_tasks): New function. * ddb/db_print.h (db_show_all_tasks): New prototype.
2014-06-11ddb: use db_thread_stat to format the flagsJustus Winter
* ddb/db_print.c (db_print_thread): Use db_thread_stat to format the flags.
2014-06-11ddb: print task names if availableJustus Winter
* ddb/db_print.c (db_print_task): Print task name if available. * i386/i386/db_interface.c (db_task_name): Likewise. * i386/i386/db_machdep.h (DB_GNUMACH_TASK_NAME): Remove unused definition.
2014-05-03ddb: add "halt" commandJustus Winter
* ddb/db_command.c (db_command_table): Add "halt" command. * i386/i386/db_interface.h (db_halt_cpu): New declaration. * i386/i386at/model_dep.c (db_halt_cpu): New function.
2014-04-04Convert from K&R to ANSIMarin Ramesa
Convert from K&R style function definitions to ANSI style function definitions. * ddb/db_access.c: Convert function prototypes from K&R to ANSI. * ddb/db_aout.c: Likewise. * ddb/db_break.c: Likewise. * ddb/db_command.c: Likewise. * ddb/db_cond.c: Likewise. * ddb/db_examine.c: Likewise. * ddb/db_expr.c: Likewise. * ddb/db_ext_symtab.c: Likewise. * ddb/db_input.c: Likewise. * ddb/db_lex.c: Likewise. * ddb/db_macro.c: Likewise. * ddb/db_mp.c: Likewise. * ddb/db_output.c: Likewise. * ddb/db_print.c: Likewise. * ddb/db_run.c: Likewise. * ddb/db_sym.c: Likewise. * ddb/db_task_thread.c: Likewise. * ddb/db_trap.c: Likewise. * ddb/db_variables.c: Likewise. * ddb/db_watch.c: Likewise. * device/blkio.c: Likewise. * device/chario.c: Likewise. * device/dev_lookup.c: Likewise. * device/dev_name.c: Likewise. * device/dev_pager.c: Likewise. * device/ds_routines.c: Likewise. * device/net_io.c: Likewise. * device/subrs.c: Likewise. * i386/i386/db_interface.c: Likewise. * i386/i386/fpu.c: Likewise. * i386/i386/io_map.c: Likewise. * i386/i386/loose_ends.c: Likewise. * i386/i386/mp_desc.c: Likewise. * i386/i386/pcb.c: Likewise. * i386/i386/phys.c: Likewise. * i386/i386/trap.c: Likewise. * i386/i386/user_ldt.c: Likewise. * i386/i386at/com.c: Likewise. * i386/i386at/kd.c: Likewise. * i386/i386at/kd_event.c: Likewise. * i386/i386at/kd_mouse.c: Likewise. * i386/i386at/kd_queue.c: Likewise. * i386/i386at/lpr.c: Likewise. * i386/i386at/model_dep.c: Likewise. * i386/i386at/rtc.c: Likewise. * i386/intel/pmap.c: Likewise. * i386/intel/read_fault.c: Likewise. * ipc/ipc_entry.c: Likewise. * ipc/ipc_hash.c: Likewise. * ipc/ipc_kmsg.c: Likewise. * ipc/ipc_marequest.c: Likewise. * ipc/ipc_mqueue.c: Likewise. * ipc/ipc_notify.c: Likewise. * ipc/ipc_port.c: Likewise. * ipc/ipc_right.c: Likewise. * ipc/mach_debug.c: Likewise. * ipc/mach_msg.c: Likewise. * ipc/mach_port.c: Likewise. * ipc/mach_rpc.c: Likewise. * kern/act.c: Likewise. * kern/exception.c: Likewise. * kern/ipc_mig.c: Likewise. * kern/ipc_tt.c: Likewise. * kern/lock_mon.c: Likewise. * kern/mach_clock.c: Likewise. * kern/machine.c: Likewise. * kern/printf.c: Likewise. * kern/priority.c: Likewise. * kern/startup.c: Likewise. * kern/syscall_emulation.c: Likewise. * kern/syscall_subr.c: Likewise. * kern/thread_swap.c: Likewise. * kern/time_stamp.c: Likewise. * kern/timer.c: Likewise. * kern/xpr.c: Likewise. * vm/memory_object.c: Likewise. * vm/vm_debug.c: Likewise. * vm/vm_external.c: Likewise. * vm/vm_fault.c: Likewise. * vm/vm_kern.c: Likewise. * vm/vm_map.c: Likewise. * vm/vm_pageout.c: Likewise. * vm/vm_user.c: Likewise.
2014-02-04ddb: safely copy symbol names into the symtab structureJustus Winter
Use strncpy instead of strcpy to copy the name of a symbol into the symtab structure. Make sure that the string is properly terminated. Found using Coverity. * ddb/db_sym.c (db_add_symbol_table): Use strncpy instead of strcpy, ensure string termination.
2013-12-20Mark pure functions with attribute pureMarin Ramesa
2013-12-20ddb/db_watch.c (db_watchpoint_cmd): remove forward declarationMarin Ramesa
* ddb/db_watch.c (db_watchpoint_cmd) (db_option): Remove forward declaration.
2013-12-20Declare void argument lists (part 2)Marin Ramesa
Declare void argument lists that were not declared in the first part of this patch and * kern/sched_prim.h (recompute_priorities): Fix prototype. * kern/startup.c (setup_main) (recompute_priorities): Fix call.
2013-12-16Quiet GCC warning about uninitialized variableMarin Ramesa
* ddb/db_command.h (db_error): Mark with attribute noreturn. * i386/i386/setjmp.h (_longjmp): Likewise.
2013-12-15ddb: qualify pointers whose dereferenced values are constant with constMarin Ramesa
2013-12-15ddb/db_expr.c (db_mult_expr): initialize lhsMarin Ramesa
Initialize lhs to zero to avoid uninitialized usage in db_unary(). * ddb/db_expr.c (db_mult_expr) (lhs): Initialize to zero.
2013-12-15ddb/db_break.c (db_delete_cmd): remove unnecessary initializationMarin Ramesa
Now that we have returns there are no more warnings from GCC about uninitialized variable. Remove unnecessary initialization of variable bkpt. * ddb/db_break.c (db_delete_cmd) (bkpt): Remove unnecessary initialization.
2013-12-15ddb/db_break.c (db_find_breakpoint_here): remove unnecessary castsMarin Ramesa
Variable addr and member address are already of db_addr_t type which is type defined as vm_offset_t. * ddb/db_break.c (db_find_breakpoint_here) (DB_PHYS_EQ) (addr, address): Remove unecessary casts.
2013-12-15Declare void argument listsMarin Ramesa
2013-12-09ddb/db_trap.c (db_task_trap): remove forward declarationsMarin Ramesa
* ddb/db_break.h (db_check_breakpoint_valid): Add prototype. * ddb/db_trap.c (db_init_default_thread, db_check_breakpoint_valid): Remove forward declarations.
2013-12-09Use db_addr_t instead of db_expr_tMarin Ramesa
In this way everything falls into place and there is one cast less. Function db_task_printsym() is already always called with the cast to db_addr_t in the first argument. * ddb/db_aout.c (aout_db_line_at_pc): Use db_addr_t instead of db_expr_t. (aout_db_search_by_addr): Don't cast to vm_offset_t. Argument is already db_addr_t. * ddb/db_aout.h (aout_db_line_at_pc): Use db_addr_t instead of db_expr_t. * ddb/db_sym.c (db_task_printsym): Likewise. (db_line_at_pc): Likewise. * ddb/db_sym.h (db_task_printsym): Likewise. (db_line_at_pc): Likewise. * i386/i386/db_trace.c (db_task_printsym): Cast to db_addr_t instead of db_expr_t. Member swap_func is a pointer to void.
2013-12-09ddb/db_print.c: use unsigned long instead of an unsigned intMarin Ramesa
Variable db_maxoff is in other files declared as unsigned long. * ddb/db_print.c (db_maxoff): Use unsigned long instead of an unsigned int.
2013-12-09ddb/db_mp.c: definition of db_console() only if CONSOLE_ON_MASTERMarin Ramesa
Function db_console() is called only if CONSOLE_ON_MASTER. If it stays this way, db_console() will not compile. I don't know if it should be removed. Maybe someone will rewrite it. * ddb/db_mp.c (db_console): Definition only if CONSOLE_ON_MASTER. * ddb/db_mp.h [CONSOLE_ON_MASTER] (db_console): Add prototype.
2013-12-09ddb/db_mp.c: use boolean instead of an intMarin Ramesa
* ddb/db_mp.c (db_enter_debug): Use boolean instead of an int.
2013-12-09ddb/db_examine.c: trivial stylistic fix for consistencyMarin Ramesa
* ddb/db_examine.c: Trivial stylistic fix for consistency.
2013-12-09ddb/db_examine.c (db_examine_cmd): remove forward declarationMarin Ramesa
* ddb/db_examine.c (db_option): Remove forward declaration.
2013-12-09ddb/db_command.c (db_command): remove forward declarationMarin Ramesa
* ddb/db_command.c (db_fncall): Remove forward declaration.
2013-12-09ddb/db_command.c: use boolean valuesMarin Ramesa
* ddb/db_command.c (db_cmd_loop_done): Use boolean values.
2013-12-09ddb/db_break.c (db_find_thread_breakpoint_here): remove unnecessary castMarin Ramesa
Variable addr is already of type db_addr_t. * ddb/db_break.c (db_find_thread_breakpoint_here) (addr): Don't cast to db_addr_t.
2013-12-09ddb/db_break.c (db_add_thread_breakpoint): fix argument listMarin Ramesa
* ddb/db_break.c (db_add_thread_breakpoint): Fix argument list.
2013-12-09ddb/db_aout.c (aout_db_lookup): remove forward declarationMarin Ramesa
* ddb/db_aout.c (db_sym_parse_and_lookup): Remove forward declaration. * ddb/db_sym.h (db_sym_parse_and_lookup): Add prototype.
2013-12-09ddb/db_aout.c (aout_db_qualified_search): use DB_SYM_NULL as return valueMarin Ramesa
Function aout_db_qualified_search() returns db_sym_t. Use DB_SYM_NULL as return value instead of zero. * ddb/db_aout.c (aout_db_qualified_search): Use DB_SYM_NULL as return value.
2013-12-09ddb/db_output.c: remove forward declarationMarin Ramesa
* ddb/db_input.h (db_check_interrupt): Add prototype. * ddb/db_output.c: Include ddb/db_input.h. (db_check_interrupt): Remove forward declaration.
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