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* procfs.c (procfs_can_use_hw_breakpoint): New function.

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(init_procfs_ops): Define ``to_can_use_hw_breakpoint'' for procfs
	target vector.
	* config/mips/nm-irix5.h (TARGET_CAN_USE_HARDWARE_WATCHPOINT):
	Delete.  Add comment regarding this now-deleted target method.
This commit is contained in:
Kevin Buettner 2002-08-13 18:03:38 +00:00
parent 548bcbeca8
commit 1e03ad2088
3 changed files with 45 additions and 1 deletions
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8
gdb/ChangeLog
View File

@ -1,3 +1,11 @@
2002-08-13 Kevin Buettner <kevinb@redhat.com>
* procfs.c (procfs_can_use_hw_breakpoint): New function.
(init_procfs_ops): Define ``to_can_use_hw_breakpoint'' for procfs
target vector.
* config/mips/nm-irix5.h (TARGET_CAN_USE_HARDWARE_WATCHPOINT):
Delete. Add comment regarding this now-deleted target method.
2002-08-13 Stephane Carrez <stcarrez@nerim.fr>
* m68hc11-tdep.c (M68HC12_NUM_PSEUDO_REGS): New define.

4
gdb/config/mips/nm-irix5.h
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@ -24,7 +24,9 @@
#define TARGET_HAS_HARDWARE_WATCHPOINTS
#define TARGET_CAN_USE_HARDWARE_WATCHPOINT(type, cnt, ot) 1
/* TARGET_CAN_USE_HARDWARE_WATCHPOINT is now defined to go through
the target vector. For Irix5, procfs_can_use_hw_watchpoint()
should be invoked. */
/* When a hardware watchpoint fires off the PC will be left at the
instruction which caused the watchpoint. It will be necessary for

34
gdb/procfs.c
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@ -136,6 +136,8 @@ static int proc_find_memory_regions (int (*) (CORE_ADDR,
static char * procfs_make_note_section (bfd *, int *);
static int procfs_can_use_hw_breakpoint (int, int, int);
struct target_ops procfs_ops; /* the target vector */
static void
@ -183,6 +185,7 @@ init_procfs_ops (void)
procfs_ops.to_has_thread_control = tc_schedlock;
procfs_ops.to_find_memory_regions = proc_find_memory_regions;
procfs_ops.to_make_corefile_notes = procfs_make_note_section;
procfs_ops.to_can_use_hw_breakpoint = procfs_can_use_hw_breakpoint;
procfs_ops.to_magic = OPS_MAGIC;
}
@ -5138,6 +5141,37 @@ procfs_set_watchpoint (ptid_t ptid, CORE_ADDR addr, int len, int rwflag,
return 0;
}
/* Return non-zero if we can set a hardware watchpoint of type TYPE. TYPE
is one of bp_hardware_watchpoint, bp_read_watchpoint, bp_write_watchpoint,
or bp_hardware_watchpoint. CNT is the number of watchpoints used so
far.
Note: procfs_can_use_hw_breakpoint() is not yet used by all
procfs.c targets due to the fact that some of them still define
TARGET_CAN_USE_HARDWARE_WATCHPOINT. */
static int
procfs_can_use_hw_breakpoint (int type, int cnt, int othertype)
{
#ifndef TARGET_HAS_HARDWARE_WATCHPOINTS
return 0;
#else
/* Due to the way that proc_set_watchpoint() is implemented, host
and target pointers must be of the same size. If they are not,
we can't use hardware watchpoints. This limitation is due to the
fact that proc_set_watchpoint() calls address_to_host_pointer();
a close inspection of address_to_host_pointer will reveal that
an internal error will be generated when the host and target
pointer sizes are different. */
if (sizeof (void *) != TYPE_LENGTH (builtin_type_void_data_ptr))
return 0;
/* Other tests here??? */
return 1;
#endif
}
/*
* Function: stopped_by_watchpoint
*