Remove partially implemented writeback support.
* dcache.c: Include splay-tree.h.
(LINE_SIZE_POWER): Change from 5 to 6.
(DCACHE_SIZE): Change from 64 to 4096.
(ENTRY_INVALID, ENTRY_VALID, ENTRY_DIRTY): Delete.
(state_chars): Delete.
(struct dcache_block): Clean up; remove state and anydirty fields.
(struct dcache_struct): Redefine as a splay tree and linked list.
(last_cache): Make static.
(dcache_invalidate, dcache_hit): Rewrite for new cache structure.
(dcache_read_line, dcache_alloc): Rewrite for new cache structure.
(dcache_write_line): Delete.
(dcache_writeback): Delete.
(dcache_peek_byte): Clean up; remove "invalid" state check.
(dcache_poke_byte): Rewrite for new cache structure; clarify comment.
(dcache_splay_tree_compare): New function.
(dcache_init, dcache_free): Rewrite for new cache structure.
(dcache_xfer_memory): Rewrite for new write-through cache structure.
(dcache_print_line): New function.
(dcache_info): Rewrite for new cache structure.
(_initialize_dcache): Update "info dcache" help text.
* dcache.h (dcache_xfer_memory): Update declaration.
* target.c (memory_xfer_partial): Update calls to dcache_xfer_memory.
* infptrace.c (child_xfer_memory): Likewise.
* monitor.c (monitor_xfer_memory): Likewise.
* remote-adapt.c (adapt_xfer_inferior_memory): Likewise.
* remote-array.c (array_xfer_memory): Likewise.
* remote-bug.c (bug_xfer_memory): Likewise.
* remote-e7000.c (e7000_xfer_inferior_memory): Likewise.
* remote-eb.c (eb_xfer_inferior_memory): Likewise.
* remote-es.c (es1800_xfer_inferior_memory): Likewise.
* remote-mips.c (mips_xfer_memory): Likewise.
* remote-mm.c (mm_xfer_inferior_memory): Likewise.
* remote-nindy.c (nindy_xfer_inferior_memory): Likewise.
* remote-os9k.c (rombug_xfer_inferior_memory): Likewise.
* remote-rdi.c (arm_rdi_xfer_memory): Likewise.
* remote-rdp.c (remote_rdp_xfer_inferior_memory): Likewise.
* remote-sds.c (sds_xfer_memory): Likewise.
* remote-sim.c (gdbsim_xfer_inferior_memory): Likewise.
* remote-st.c (st2000_xfer_inferior_memory): Likewise.
* remote-udi.c (udi_xfer_inferior_memory): Likewise.
* remote-vx.c (vx_xfer_memory): Likewise.
* remote.c (remote_xfer_memory): Likewise.
* target.c (debug_to_xfer_memory, do_xfer_memory): Likewise.
* target.h (child_xfer_memory, do_xfer_memory, xfer_memory): Likewise.
* target.h (#include "memattr.h"): Added.
(target_ops.to_xfer_memory): Add attrib argument.
* wince.c (_initialize_inftarg): Removed call to set_dcache_state.
* dcache.h (set_dcache_state): Removed declaration.
* dcache.c (set_dcache_state): Removed definition
* dcache.c: Update module comment, as dcache is now enabled and
disabled with memory region attributes instead of by the global
variable "remotecache". Add comment describing the interaction
between dcache and memory region attributes.
(dcache_xfer_memory): Add comment describing benefits of moving
cache writeback to a higher level.
(dcache_struct): Removed cache_has_stuff field. This was used to
record whether the cache had been accessed in order to invalidate
it when it was disabled. However, this is not needed because the
cache is write through and the code that enables, disables, and
deletes memory regions invalidate the cache. Add comment which
suggests that we could be more selective and only invalidate those
cache lines containing data from those memory regions.
(dcache_invalidate): Updated.
(dcache_xfer_memory): Updated.
(dcache_alloc): Don't abort() if dcache_enabled_p is clear.
(dcache_xfer_memory): Removed code that called do_xfer_memory() to
perform a uncached transfer if dcache_enabled_p was clear. This
function is now only called if caching is enabled for the memory
region.
(dcache_info): Always print cache info.
* target.c (do_xfer_memory): Add attrib argument.
(target_xfer_memory, target_xfer_memory_partial): Break transfer
into chunks defined by memory regions, pass region attributes to
do_xfer_memory().
* dcache.c (dcache_read_line, dcache_write_line): Likewise.
* Makefile.in (SFILES): Add memattr.c.
(COMMON_OBS): Add memattr.o.
(dcache.o): Add target.h to dependencies.
* memattr.c: New file.
* memattr.h: Likewise.
(nindy_xfer_inferior_memory): Use dcache_xfer_memory() instead of
breaking transfer into chunks and using nindy_fetch_word() and
nindy_store_word().
* remote-bug.c (bug_xfer_memory): Use dcache_xfer_memory() instead
of breaking transfer into chunks and using gr_fetch_word() and
gr_store_word().
* remote.c (remote_fetch_word, remote_store_word): Removed.
* remote-utils.h (gr_fetch_word, gr_store_word): Removed.
* remote-utils.c (gr_fetch_word, gr_store_word): Removed.
* dcache.h (dcache_fetch, dcache_poke, dcache_poke_block): Removed.
* dcache.c (dcache_fetch, dcache_poke): Removed.
should be char *, not unsigned char *.
* dcache.h (memxferfunc): Ditto.
* monitor.c (monitor_write_memory, monitor_read_memory_single):
Ditto.
(monitor_make_srec): Let compiler figure size of hextab.
* monitor.c: Turn on caching.
(monitor_printf): If a ^C was sent, don't expect to see its
echo.
(monitor_open): Enable caching.
(monitor_resume, monitor_load): Flush cache.
(monitor_xfer_memory): Call cache routine.
(monitor_dump_regs): New.
(monitor_fetch_registers): If monitor_dump_regs available
then use it.
(monitor_load): Don't ref exec_bfd if it's NULL.
(monitor_load_srec): Use new monitor_make_srec calling convention.
(monitor_make_srec): Rewrite to cope with two, three and four byte
addresses.
* remote-hms.c (hms_cmds): Initialze end-of-command delim.
* dcache.h, dcache.h: Rewritten.
* remote.c: Reenable caching.
(getpkt): Reduce MAX_TRIES to 3.
(remote_xfer_memory): Use dcache_xfer_memory.
* defs.h (error_hook): New.
* top.c (error_hook): New definition.
* utils.c (error): Use error_hook if initialized.
* sparcl-tdep.c (HAVE_SOCKETS): Don't define if GO32 or WIN32. Use
HAVE_SOCKETS in place of #ifndef GO32.