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2015-01-02i386: Fix typos in comments (found by codespell)Stefan Weil
Signed-off-by: Stefan Weil <sw@weilnetz.de>
2015-01-02Handle kernel traps happening before starting userlandSamuel Thibault
* i386/i386/trap.c (kernel_trap): When current_thread is null, assume that we are in kernel land.
2014-12-15Make spl7 just clear IF instead of setting the PIC maskSamuel Thibault
* i386/i386/spl.S (spl7): Just set curr_ipl and cli. (splx) [MACH_KDB || MACH_TTD]: When curr_ipl is 7, make sure that IF is cleared. (splx): When staying at ipl7, do not enable interrupts. (spl) [MACH_KDB || MACH_TTD]: When curr_ipl is 7, make sure that IF is cleared. (spl): When new ipl is 7, branch to spl7. * i386/i386/locore.S (TIME_TRAP_UENTRY, TIME_TRAP_SENTRY): Save flags, and restore them instead of blindly using sti.
2014-11-16Only set debug registers when they are usedSamuel Thibault
* i386/i386/db_interface.c (zero_dr): New variable (db_load_context): Do not set debug registers to zero when they are already zero. (db_dr): When kernel debug registers get zero, record that the debug registers have been zeroed.
2014-09-17Report DR6 to userlandSamuel Thibault
* i386/i386/trap.c (user_trap): On T_DEBUG, record the content of dr6 in PCB, and clear it.
2014-07-06Document that io_map_cached leaks memorySamuel Thibault
2014-07-06Merge branch 'master' of git.savannah.gnu.org:/srv/git/hurd/gnumachSamuel Thibault
2014-07-06i386: add io_map_cachedJustus Winter
io_map_cached is like io_map, but reuses the old mapping if it is applicable. * i386/i386/io_map.c: Add io_map_cached.
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.
2014-05-27Add missing memory clobberSamuel Thibault
* i386/i386/xen.h (mb, rmb, wmb): Add memory clobber.
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.
2014-04-30i386: fix MACHINE_SERVER_HEADERJustus Winter
Commit b6dab094 introduced a way to include the MIG-generated server files for the machine specific interface in ipc_kobject.c. This broke out-of-tree builds. Here, 'machine' is a symlink to '../i386/i386', it points into the source tree. The MIG-generated files however are put in the build tree in i386/i386. * i386/i386/machine_routines.h (MACHINE_SERVER_HEADER): Fix path.
2014-04-30kern: include the MIG-generated server headers for MACHINE_SERVERJustus Winter
GNU MIG recently gained support for emitting x_server_routine declarations in the generated server header file. Using this declaration, the x_server_routine functions can be inlined into the ipc_kobject_server function. * kern/ipc_kobject.c: Include the MIG-generated server headers for the machine-dependent interfaces. (ipc_kobject_server): Drop the simple declaration of MACHINE_SERVER_ROUTINE. * i386/i386/machine_routines.h (MACHINE_SERVER_HEADER): New definition.
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.
2014-03-03Keep two virtual pages as mapping windows to access physical memorySamuel Thibault
PCI devices expose their memory etc. way beyond last_phys_addr. Userland drivers opening /dev/mem need to open those too, even if phystokv() will not work for them. * i386/intel/pmap.h (pmap_mapwindow_t): New type. (pmap_get_mapwindow, pmap_put_mapwindow): New prototypes. (PMAP_NMAPWINDOWS): New macro. * i386/intel/pmap.c (mapwindows): New array. (pmap_get_mapwindow, pmap_put_mapwindow): New functions. (pmap_bootstrap, pmap_virtual_space): Reserve virtual pages for the mapping windows. * i386/i386/phys.c: Include <i386/model_dep.h> (INTEL_PTE_W, INTEL_PTE_R): New macros (pmap_zero_page, pmap_copy_page, copy_to_phys, copy_from_phys): Use `pmap_get_mapwindow' to temporarily map physical pages beyond last_phys_addr.
2014-02-04Fix potential NULL dereferenceSamuel Thibault
Found by Coverity * i386/i386/user_ldt.c (i386_get_ldt): Fetch `pcb' field of `thread' only after looking for `thread' being NULL.
2014-02-04Fix potential NULL dereferenceSamuel Thibault
Found by Coverity * i386/i386/db_trace.c (db_find_kthread): Handle case when task is NULL.
2014-02-04Fix FPU state copy sizeSamuel Thibault
* i386/i386/fpu.c (fpu_set_state, fpu_get_state): Fix size of `user_fp_regs' access.
2014-02-04Fix FPU state accessSamuel Thibault
Found by coverity. * i386/i386/fpu.c (fpu_set_state, fpu_get_state): Fix out of bound `user_fp_regs' access.
2014-01-01Add comment after endifMarin Ramesa
* i386/i386/io_perm.h (_I386_IO_PERM_H_): Add comment after endif.
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.
2013-12-17i386: qualify pointers whose dereferenced values are constant with constMarin Ramesa
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.
2013-12-15i386/i386/db_trace.c: use (long *) instead of an (int *)Marin Ramesa
* i386/i386/db_trace.c (db_lookup_i386_kreg) (kregp): Use (long *) instead of an (int *).
2013-12-15Type definitionMarin Ramesa
* i386/i386/ast_check.c (init_ast_check, cause_ast_check): Define return type. * i386/i386/pic.c (intnull, prtnull): Define argument types. * i386/i386at/com.c (compr_addr): Likewise. (compr): Likewise. (compr_addr): Fix printf format. * i386/i386at/kd.c (kd_cmdreg_write, kd_kbd_magic): Define argument types. * i386/i386at/kd_mouse.c (init_mouse_hw): Likewise. * ipc/mach_port.c (sact_count): Define return type. * ipc/mach_rpc.c (mach_port_rpc_sig): Define argument types. * kern/act.c (dump_act): Define return type. * kern/lock_mon.c (simple_lock, simple_lock_try, simple_unlock, lip, lock_info_sort, lock_info_clear, print_lock_info): Define return type. (time_lock): Define return type and argument type. * kern/timer.c (time_trap_uexit): Define argument type.
2013-12-15i386/i386/ldt.c: remove forward declarationMarin Ramesa
* i386/i386/ldt.c (syscall): Remove forward declaration. Include locore.h. * i386/i386/locore.h (syscall): Add prototype.
2013-12-15Declare void argument listsMarin Ramesa
2013-12-11i386/i386/db_trace.c (db_i386_stack_trace): remove unnecessary castMarin Ramesa
Argument to INKERNEL() is already cast to vm_offset_t in the macro itself. * i386/i386/db_trace.c (db_i386_stack_trace) (INKERNEL) (callpc): Don't cast to unsigned long. (db_i386_stack_trace) (INKERNEL) (frame): Likewise.
2013-12-11i386/i386/db_trace.c: remove forward declarationMarin Ramesa
* i386/Makefrag.am: List i386/i386/db_trace.h. * i386/i386/db_trace.c: Include machine/db_trace.h. (db_i386_stack_trace): Remove forward declaration. * i386/i386/db_trace.h: New file. Add copyright. [_I386_DB_TRACE_H_]: Add ifndef. (i386_frame): Declare forward. (db_i386_stack_trace): Add prototype.
2013-12-11Cleanup of the memcpy(), memmove(), memcmp() and memset() callsMarin Ramesa
Addresses were cast to (void *). Pointers uncasted. * device/ds_routines.c (ds_read_done) (memset) (start_sent): Cast to (void *) instead to (char *). Argument is an address. (ds_read_done) (memset) (end_data): Likewise. * i386/i386/pcb.c (thread_getstatus) (memcpy) (pm): Don't cast. Argument is a pointer. (thread_getstatus) (memcpy) (iopb): Likewise. * i386/i386at/immc.c (immc_cnputc) (memmove): Cast first argument to (void *). Argument is an address. (immc_cnputc) (memmove): Cast second argument to (void *). Argument is an address. (immc_cnputc) (memset): Cast first argument to (void *). Argument is an address. * i386/i386at/model_dep.c (i386at_init) (memcpy) (phystokv): Cast to (void *) instead to (char *). Argument is an address. * i386/intel/pmap.c (pmap_init) (memset) (addr): Likewise. * ipc/mach_debug.c (mach_port_space_info) (memset) (table_addr + size_used): Likewise. (mach_port_space_info) (memset) (tree_addr + size_used): Likewise. * kern/host.c (host_processor_sets) (memcpy) (newaddr): Likewise. (host_processor_sets) (memcpy) (addr): Likewise. * kern/xpr.c (xprbootstrap) (memset) (addr): Likewise. * vm/vm_debug.c (mach_vm_object_pages) (memset) (addr + size_used): Likewise.
2013-12-10i386/i386/db_interface.c: use vm_offset_t instead of an unsigned intMarin Ramesa
This is more in line with how the function db_user_to_kernel_address() is called. In this way there is one cast less and several GCC warnings are silenced. * i386/i386/db_interface.c (db_set_hw_watchpoint) (kern_addr): Use vm_offset_t instead of an unsigned int. (db_user_to_kernel_address) (kaddr): Likewise. (db_user_to_kernel_address) (ptetokv): Don't cast return value. (db_read_bytes) (kern_addr): Use vm_offset_t instead of an unsigned int. (db_write_bytes_user_space) (kern_addr): Likewise. (db_task_name) (vaddr, kaddr): Likewise. * i386/i386/db_interface.h (db_user_to_kernel_address) (kaddr): Likewise.
2013-12-10i386: move prototypes to fix implicit declaration of functionMarin Ramesa
This fixes the implicit declarations in kern/machine.c and kern/debug.c. * i386/i386/model_dep.h (halt_cpu, halt_all_cpus): Add prototypes. * i386/i386at/model_dep.h (halt_cpu, halt_all_cpus): Remove prototypes.
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.
2013-12-09i386/i386/db_interface.c: remove forward declarationMarin Ramesa
* i386/i386/db_interface.c (db_write_bytes_user_space): Remove forward declaration. * i386/i386/db_interface.h (db_write_bytes_user_space): Add prototype.
2013-12-09i386/i386at/pic_isa.c: remove forward declarationMarin Ramesa
* i386/Makefrag.am: Include i386/i386/hardclock.h. * i386/i386/hardclock.h: New file. Add copyright. [_I386_HARDCLOCK_H_]: Add ifndef. (hardclock): Add prototype. * i386/i386at/pic_isa.c (hardclock): Remove forward declaration. Include i386/hardclock.h.
2013-12-09i386/i386/user_ldt.c: remove unused variableMarin Ramesa
* i386/i386/user_ldt.c (acc_type): Remove unused variable.
2013-12-09i386/i386/trap.c: remove unused variablesMarin Ramesa
* i386/i386/trap.c (v86_assist_on, v86_unsafe_ok, v86_do_sti_cli, v86_do_sti_immediate, cli_count, sti_count): Remove unused variables.
2013-12-08i386/i386/trap.c: remove unused variableMarin Ramesa
* i386/i386/trap.c (brb): Remove unused variable.
2013-12-08i386/i386/pit.c: remove unused variablesMarin Ramesa
* i386/i386/pit.c (pitctr1_port, pitctr2_port): Remove unused variables.
2013-12-08i386/i386/pic.c: remove unused variablesMarin Ramesa
* i386/i386/pic.c (nintr, npics): Remove unused variables.
2013-12-08i386/i386/mp_desc.c: remove unused variableMarin Ramesa
* i386/i386/mp_desc.c (avail_start): Remove unused variable.
2013-12-08i386/i386/ipl.h: remove ifdef and add ifndefMarin Ramesa
This code is used even if KERNEL is not defined. Remove the ifdef. * i386/i386/ipl.h [_I386_IPL_H_]: Add ifndef.
2013-12-08i386/i386/db_interface.c: use boolean instead of an intMarin Ramesa
* i386/i386/db_interface.c (kernel_dr): Use boolean instead of an int.
2013-12-08i386/i386/setjmp.h: remove ifdefMarin Ramesa
Function _longjmp() is used even if __GNUC__ is not defined. Avoid implicit declaration in that case by removing the ifdef. * i386/i386/setjmp.h [__GNUC__] (_longjmp): Remove ifdef.
2013-12-08Add comments after endifsMarin Ramesa
* device/cons.c [MACH_KMSG]: Likewise. [CONSBUFSIZE > 0]: Likewise. * i386/i386/trap.c [MACH_KDB]: Likewise. [MACH_PV_PAGETABLES]: Likewise. * i386/i386at/kd.c [ENABLE_IMMEDIATE_CONSOLE]: Likewise. * ipc/ipc_kmsg_queue.h [_IPC_KMSG_QUEUE_H_]: Likewise. * kern/act.c [ACTWATCH]: Likewise. * kern/refcount.h [MACHINE_REFCOUNT]: Likewise. * kern/task.c [FAST_TAS]: Likewise.
2013-12-05kern/thread.c: remove forward declarationMarin Ramesa
* i386/i386/pcb.h (pcb_module_init): Add prototype. * kern/thread.c (pcb_module_init): Remove forward declaration.
2013-12-05kern/startup.c: remove forward declarationsMarin Ramesa
* Makefrag.am: Include kern/bootstrap.h. Include vm/vm_init.h. Include device/device_init.h. * device/device_init.h: New file. Add copyright. [_DEVICE_DEVICE_INIT_H_]: Add ifndef. (device_service_create): Add prototype. * i386/i386/mp_desc.h (start_other_cpus): Add prototype. * kern/bootstrap.h: New file. Add copyright. [_KERN_BOOTSTRAP_H_]: Add ifndef. (bootstrap_create): Add prototype. * kern/sched_prim.h (idle_thread, sched_thread): Add prototypes. * kern/startup.c: Include kern/bootstrap.h. Include kern/startup.h. Include vm/vm_init.h. Include vm/vm_pageout.h. Include device/device_init.h. (vm_mem_init, vm_mem_bootstrap, init_timeout, machine_init, idle_thread, vm_pageout, reaper_thread, swapin_thread, sched_thread, bootstrap_create, device_service_create, cpu_launch_first_thread, start_kernel_threads, start_other_cpus, action_thread): Remove forward declarations. [NCPUS > 1] Include machine/mp_desc.h and kern/machine.h. * kern/startup.h: Include kern/thread.h. (cpu_launch_first_thread, start_kernel_threads): Add prototypes. * vm/vm_init.h: New file. Add copyright. [_VM_VM_INIT_H_]: Add ifndef. (vm_mem_init, vm_mem_bootstrap): Add prototypes. * vm/vm_pageout.h (vm_pageout): Add prototype.
2013-12-05kern/bootstrap.c: remove forward declarationsMarin Ramesa
* i386/i386/pcb.h: Include mach/thread_status.h. Include machine/thread.h. * kern/bootstrap.c: Include machine/pcb.h. (user_stack_low, set_user_regs): Remove forward declarations.
2013-12-05Drop duplicate declarationSamuel Thibault
* i386/i386/model_dep.h (halt_cpu, halt_all_cpus): Remove duplicate declaration. * i386/i386at/model_dep.h (halt_cpu, halt_all_cpus): Add comments.
2013-12-05kern/exception.c: remove forward declarationsMarin Ramesa
* i386/i386/trap.h (thread_kdb_return): Add prototype. * kern/exception.c (thread_kdb_return, db_printf): Remove forward declarations. Include machine/trap.h. Include ddb/db_output.h.
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