[SCM] GNU Mach branch, master, updated. f34cc6d5a8bad7a6c34f30917c3f137c886d29bf

[Samuel Thibault]

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commit f34cc6d5a8bad7a6c34f30917c3f137c886d29bf
Author: Samuel Thibault <address@hidden>
Date:   Mon Feb 4 11:56:51 2013 +0100

    Include machine/db_interface instead of hardcoding function prototypes
    
    * ddb/db_access.c: Include <machine/db_interface.h>.
    (db_read_bytes, db_write_bytes): Remove functions prototypes.
    (db_get_task_value): Fix calling db_read_bytes.
    (db_put_task_value): Fix calling db_write_bytes.
    * ddb/db_watch.c: Include <machine/db_interface.h>.
    (db_set_hw_watchpoint, db_clear_hw_watchpoint): Remove functions prototypes.

commit 39376ba840a8682082eee9175b6951d4a7ae41f2
Author: Samuel Thibault <address@hidden>
Date:   Mon Feb 4 11:43:17 2013 +0100

    Plug hw debug register support into kdb
    
    Make the `watch' command use hw debug registers whenever possible.
    
    * ddb/db_watch.c (db_set_hw_watchpoint, db_clear_hw_watchpoint): Add
    functions prototypes.
    (db_set_watchpoints): Try to call db_set_hw_watchpoint.
    (db_clear_watchpoints): Call db_clear_hw_watchpoint.
    * i386/i386/db_interface.c: Include <ddb/db_watch.h>
    (db_set_hw_watchpoint): Take a db_watchpoint_t WATCH parameter instead of
    its content. Remove support for clearing a debug register.
    (db_clear_hw_watchpoint): Add function.
    * i386/i386/db_interface.h: Include <ddb/db_watch.h>.
    (db_set_hw_watchpoint): Fix function prototype.
    (db_clear_hw_watchpoint): Add function prototype.
    * i386/i386/db_machdep.h: Do not include <machine/db_interface.h>

commit 43042e6f6cc483b22694619861eab183364f08f5
Author: Samuel Thibault <address@hidden>
Date:   Mon Feb 4 11:37:51 2013 +0100

    Document dwatch
    
    * doc/mach.texi: Add dwatch documentation.

commit d14e4924c55e3016d1ddf7a38a7e93460ca10ac8
Author: Samuel Thibault <address@hidden>
Date:   Mon Feb 4 10:38:16 2013 +0100

    Add x86 hardware debugging register support
    
    This adds using the x86 hardware debugging registers, either from the kernel
    through db_set_hw_watchpoint, or from userland through i386_DEBUG_STATE.
    While the kernel is using the registers, the userland values are ignored.
    
    * i386/i386/db_interface.c (kernel_dr, ids): New variables.
    (db_load_context, db_get_debug_state, db_set_debug_state, db_dr,
    db_set_hw_watchpoint): New functions.
    (kdb_trap): Use get_dr* instead of dr_addr[].
    * i386/i386/db_interface.h (db_user_to_kernel_address, db_set_hw_watchpoint)
    (db_dr, db_get_debug_state, db_set_debug_state, db_load_context): Add 
functions
    prototypes.
    (dr0, dr1, dr2, dr3): Remove functions prototypes.
    * i386/i386/locore.S (dr6, dr0, dr1, dr2, dr3): Remove functions.
    (dr_msk, dr_addr): Remove variables.
    * i386/include/mach/i386/thread_status.h (i386_DEBUG_STATE): Add macro.
    (i386_debug_state): Add structure.
    (i386_DEBUG_STATE_COUNT): Add macro.
    * i386/i386/thread.h: Include <mach/machine/thread_status.h>.
    (i386_machine_state): Add `struct i386_debug_state ids' field.
    * i386/i386/pcb.c: Include <i386/db_interface.h>.
    (switch_ktss): Call db_load_context.
    (thread_setstatus, thread_getstatus): Add I386_DEBUG_STATE case.
    * i386/i386/proc_reg.h (get_dr0, set_dr0, get_dr1, set_dr1, get_dr2,
    set_dr2, get_dr3, set_dr3, get_dr6, set_dr6, get_dr7, set_dr7): Add macros.

-----------------------------------------------------------------------

Summary of changes:
 ddb/db_access.c                        |    8 +-
 ddb/db_watch.c                         |   11 ++
 doc/mach.texi                          |    9 ++
 i386/i386/db_interface.c               |  163 ++++++++++++++++++++++++++++++--
 i386/i386/db_interface.h               |   33 ++++++-
 i386/i386/db_machdep.h                 |    1 -
 i386/i386/locore.S                     |  122 ------------------------
 i386/i386/pcb.c                        |   32 ++++++
 i386/i386/proc_reg.h                   |  126 ++++++++++++++++++++++++
 i386/i386/thread.h                     |    2 +
 i386/include/mach/i386/thread_status.h |    7 ++
 11 files changed, 373 insertions(+), 141 deletions(-)


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