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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2013-02-04 10:38:16 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2013-02-04 10:38:16 +0100 |
| commit | d14e4924c55e3016d1ddf7a38a7e93460ca10ac8 (patch) | |
| tree | 29da83f6fc7ed527484887b6ee5ce305fe8bb165 /i386/include | |
| parent | 51e87d005139a435cd846ac5c224eed5042c4fa0 (diff) | |
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.
Diffstat (limited to 'i386/include')
| -rw-r--r-- | i386/include/mach/i386/thread_status.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/i386/include/mach/i386/thread_status.h b/i386/include/mach/i386/thread_status.h index 5f20355..ba1e3de 100644 --- a/i386/include/mach/i386/thread_status.h +++ b/i386/include/mach/i386/thread_status.h @@ -56,6 +56,7 @@ #define i386_ISA_PORT_MAP_STATE 3 #define i386_V86_ASSIST_STATE 4 #define i386_REGS_SEGS_STATE 5 +#define i386_DEBUG_STATE 6 /* * This structure is used for both @@ -144,4 +145,10 @@ struct v86_interrupt_table { #define i386_V86_ASSIST_STATE_COUNT \ (sizeof(struct i386_v86_assist_state)/sizeof(unsigned int)) +struct i386_debug_state { + unsigned int dr[8]; +}; +#define i386_DEBUG_STATE_COUNT \ + (sizeof(struct i386_debug_state)/sizeof(unsigned int)) + #endif /* _MACH_I386_THREAD_STATUS_H_ */ |