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2010-02-22 Pedro Alves <pedro@codesourcery.com>

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PR9605

	gdb/
	* breakpoint.c (insert_bp_location): If inserting the read
	watchpoint failed, fallback to an access watchpoint.
	(bpstat_check_watchpoint): Stop for read watchpoint triggers even
	if the value changed, if not watching the same memory for writes.
	(watchpoint_locations_match): Add comment.
	(update_global_location_list): Copy the location's watchpoint type.
	* i386-nat.c (i386_length_and_rw_bits): It's an internal error to
	handle read watchpoints here.
	(i386_insert_watchpoint): Read watchpoints aren't supported.
	* remote.c (remote_insert_watchpoint): Return 1 for unsupported
	packets.
	* target.h (target_insert_watchpoint): Update description.

2010-02-22  Pedro Alves  <pedro@codesourcery.com>

	PR9605

	gdbserver/
	* i386-low.c (i386_length_and_rw_bits): Throw a fatal error if
	handing a read watchpoint.
	(i386_low_insert_watchpoint): Read watchpoints aren't supported.

2010-02-22  Pedro Alves  <pedro@codesourcery.com>

	PR9605

	gdb/testsuite/
	* gdb.base/watch-read.c, gdb.base/watch-read.exp: New files.
This commit is contained in:
Pedro Alves
2010-02-22 23:35:17 +00:00
parent 4c7f0517f3
commit 85d721b88f
10 changed files with 305 additions and 14 deletions
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7
gdb/target.h
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@@ -1264,9 +1264,10 @@ extern char *normal_pid_to_str (ptid_t ptid);
(*current_target.to_region_ok_for_hw_watchpoint) (addr, len)
/* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes. TYPE is 0
for write, 1 for read, and 2 for read/write accesses. Returns 0 for
success, non-zero for failure. */
/* Set/clear a hardware watchpoint starting at ADDR, for LEN bytes.
TYPE is 0 for write, 1 for read, and 2 for read/write accesses.
Returns 0 for success, 1 if the watchpoint type is not supported,
-1 for failure. */
#define target_insert_watchpoint(addr, len, type) \
(*current_target.to_insert_watchpoint) (addr, len, type)