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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.
2014-09-17ddb: 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.
2014-09-17Report DR6 to userlandSamuel Thibault
* i386/i386/trap.c (user_trap): On T_DEBUG, record the content of dr6 in PCB, and clear it.
2014-08-22Fix computationSamuel Thibault
* i386/i386at/com.c (comintr): Fix computation of '@'.
2014-08-22Even less magic-looking control valueNeal H. Walfield
* i386/i386at/com.c (comintr): Use 'A'-1 instead of '@'.
2014-08-22Support invoking the debugger over the serial consoleJustus Winter
* i386/i386at/com.c (comintr): Invoke the debugger if ctrl-alt-d is pressed. * i386/i386at/com.h (kdb_kintr): Add declaration.
2014-07-25Drop debugging printsSamuel Thibault
* i386/i386at/acpi.c (grub_machine_acpi_get_rsdpv2): Drop debugging prints.
2014-07-06Do not unmap page 0 when not neededSamuel Thibault
Since we need it to access some BIOS information, e.g. at ACPI shutdown. When the kernel VM is not starting at 0, there is already nothing mapped there in user tasks, anyway. * i386/i386at/model_dep.c (machine_init) [VM_MIN_KERNEL_ADDRESS != 0]: Do not call pmap_unmap_page_zero. * i386/intel/pmap.c (pmap_unmap_page_zero): Warn that unmapping page zero may break some BIOS functions.
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: use ACPI to power off the machineJustus Winter
This is a mostly verbatim copy of acpihalt.c from GRUB2 with a little bit of glue code. * i386/Makefrag.am (libkernel_a_SOURCES): Add the new files. * i386/grub/acpi.h: Verbatim copy from GRUB2. * i386/grub/compiler.h: Likewise. * i386/grub/cpu/io.h: Likewise. * i386/grub/cpu/time.h: Likewise. * i386/grub/cpu/types.h: Likewise. * i386/grub/err.h: Likewise. * i386/grub/misc.h: Likewise. * i386/grub/mm.h: Likewise. * i386/grub/symbol.h: Likewise. * i386/grub/time.h: Likewise. * i386/grub/types.h: Likewise. * i386/i386at/acpi.c: Likewise. * i386/i386at/acpihalt.c: Likewise. (grub_acpi_halt): Map physical addresses. * i386/i386at/acpihalt.h: New file. * i386/grub/glue.h: Some glue macros. * i386/grub/i18n.h: Stub out i18n. * i386/i386at/grub_glue.c: Some glue code. * i386/i386at/model_dep.c (halt_all_cpus): Use grub_acpi_halt.
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.
2014-06-11i386: remap some keysJustus Winter
As a convenience for the nice people using our debugger, remap some keys to the readline-like shortcuts supported by dde. * i386/i386at/kd.c (kdcnmaygetc): Remap some keys.
2014-06-11i386: reformat the key mapJustus Winter
* i386/i386at/kd.c (key_map): Remove superfluous newlines so that every entry fits into one line. This way line numbers can be used as an index into the map.
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.
2014-05-25Rewrite old-style #endif FOO directivesJustus Winter
* i386/include/mach/i386/cthreads.h: Rewrite old-style #endif FOO directives. * include/device/tape_status.h: Likewise. * include/mach/alert.h: Likewise. * include/mach/boot.h: Likewise. * include/mach/default_pager_types.defs: Likewise. * include/mach/default_pager_types.h: Likewise. * include/mach/multiboot.h: Likewise. * include/mach/notify.defs: Likewise. * include/mach_debug/pc_info.h: Likewise. * kern/act.h: Likewise. * kern/refcount.h: Likewise. * kern/shuttle.h: Likewise.
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.
2014-04-04Use explicit prototypes for struct dev_ops fieldsMarin Ramesa
* device/conf.h: Include <sys/types.h>, <mach/port.h>, <mach/vm_prot.h>. Predefine struct io_req, io_req_t and io_return_t. (dev_ops): Add explicit prototypes for d_open, d_close, d_read, d_write, d_getstat, d_setstat, d_mmap, d_port_death. (nulldev_open, nulldev_close, nulldev_read, nulldev_write, nulldev_getstat, nulldev_setstat, nulldev_portdeath): Add prototypes. (nomap): Fix prototype. * device/dev_name.c (nulldev_open, nulldev_close, nulldev_read, nulldev_write, nulldev_getstat, nulldev_setstat, nulldev_portdeath): New functions. (nomap): Fix prototype. * device/ds_routines.c (dev_close): Pass 0 as flag parameter. * device/kmsg.c (kmsgclose): Drop return value. * device/kmsg.h (kmsgclose): Fix prototype. * i386/i386at/com.c (comopen): Fix prototype. (comclose): Fix prototype, drop return value. (comread, comwrite): Fix prototype. * i386/i386at/com.h (comopen, comclose, comread, comwrite): Fix prototype. * i386/i386at/conf.c (dev_ops): Use nulldev_open, nulldev_close, nulldev_read, nulldev_write, nulldev_getstat, nulldev_setstat, nulldev_portdeath where appropriate. * i386/i386at/kd.c (kdclose, kdread, kdwrite, kdmmap): Fix prototype. * i386/i386at/kd.h (kdclose, kdread, kdwrite, kdmmap): Likewise. * i386/i386at/kd_event.c (kbdopen): Likewise. * i386/i386at/kd_event.h (kbdopen): Likewise. * i386/i386at/kd_mouse.c (mouseopen): Likewise. * i386/i386at/kd_mouse.h (mouseopen): Likewise. * i386/i386at/lpr.c (lpropen, lprclose, lprread, lprwrite): Likewise. * i386/i386at/lpr.h (lpropen, lprclose, lprread, lprwrite): Likewise. * i386/i386at/mem.c (memmmap): Likewise. * i386/i386at/mem.h (memmmap): Likewise. * i386/i386at/model_dep.c (timemmap): Likewise. * i386/i386at/model_dep.h (timemmap): Likewise. * kern/mach_clock.c (timeopen, timeclose): Likewise. * kern/mach_clock.h: Include <sys/types.h>, predefine struct io_req and io_req_t. (timeopen, timeclose): Fix prototype.
2014-03-28Assume EGA/VGA cardSamuel Thibault
CGA and MONO cards are more than hard to find nowadays, and some buggy BIOSes claim running them nowadays... * i386/i386at/kd.c (kd_xga_init): Do not handle CGA and MONO cases any more, which thus default to EGA/VGA.
2014-03-28Really default to EGA/VGA on unknown CMOS valuesSamuel Thibault
* i386/i386at/kd.c (kd_xga_init): Use CM_EGA_VGA behavior as default case for unknown values of CMOS data.
2014-03-22Fix overflowSamuel Thibault
We were filling much more than the mapwindows array, thus overwriting in at least debugger variables. * i386/intel/pmap.c (pmap_bootstrap): Make sure to limit mapwindows initialization within PMAP_NMAPWINDOWS.
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 comstart when the queue is emptySamuel Thibault
Found by Coverity * i386/i386at/com.c (comstart): Make `nch' an int. When `getc' returns -1, just return.
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 potential NULL dereferenceSamuel Thibault
Found by Coverity. * i386/i386at/com.c (comopen): On com_reprobe() returning success, check for `isai' again.
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.
2014-02-04Make empty while loops more prominentSamuel Thibault
* i386/i386at/kd.c (kdintr, kd_senddata, kd_sendcmd, kd_getgata, kd_cmdreg_read, kd_cmdreg_write, kd_mouse_drain): Move semi colon of empty while loops on a single line to make it more visible.
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.
2014-02-04Fix typoSamuel Thibault
* i386/i386at/kd_mouse.c (mouseopen): Fix typo.
2014-02-04Add missing breakSamuel Thibault
Found by Coverity * i386/i386at/kd_mouse.c (mouseopen): Add missing break.
2014-01-02Make sure cursor is initializedSamuel Thibault
* i386/i386at/kd.c (kd_xga_init): Add start, stop variables, read them from CRT registers, make sure the cursor is enabled and is not reduced to 0, and write them back to CRT registers. * i386/i386at/kd.h (C_START, C_STOP): New macros.
2014-01-01i386/include/mach/i386/mach_i386_types.h: add comments after else and endifMarin Ramesa
* i386/include/mach/i386/mach_i386_types.h (MACH_KERNEL): Add comments after else and endif.
2014-01-01Add comment after endifMarin Ramesa
* i386/i386/io_perm.h (_I386_IO_PERM_H_): Add comment after endif.
2013-12-20Merge branch 'master' of git.savannah.gnu.org:/srv/git/hurd/gnumachSamuel Thibault
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.
2013-12-18i386: add missing includesJustus Winter
* i386/i386at/kd_event.h: Add missing includes.
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 *).
2013-12-15ddb: qualify pointers whose dereferenced values are constant with constMarin Ramesa
2013-12-15Fix gcc signedness warningSamuel Thibault
Thanks Marin Ramesa and Richard Braun for investigating. * i386/i386at/kd.c (kdintr): Make `char_idx' and `max' unsigned. (kdstate2idx): Make function take and return unsigned ints for the state. * i386/i386at/kd.h (kdstate2idx): Likewise.
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/i386at/kd_mouse.c (kd_mouse_open): remove forward declarationMarin Ramesa
* i386/i386at/kd_mouse.c (kd_mouse_open) (kdintr): Remove forward declaration.
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