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binutils-gdb/gdb/dcache.h

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Initial creation of sourceware repository
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/* Declarations for caching. Typically used by remote back ends for
caching remote memory.
* exec.c (xfer_memory): Add attrib argument. * 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.
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Copyright 1992, 1993, 2001 Free Software Foundation, Inc.
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import gdb-1999-07-07 post reformat
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This file is part of GDB.
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import gdb-1999-07-07 post reformat
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This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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import gdb-1999-07-07 post reformat
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This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
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import gdb-1999-07-07 post reformat
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You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
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#ifndef DCACHE_H
#define DCACHE_H
typedef struct dcache_struct DCACHE;
* MAINTAINERS: Add myself as dcache.c maintainer. * remote-nindy.c (nindy_load): Invalidate dcache. * dcache.c (dcache_invd): Renamed from dcache_flush. The term flush with respect to caches usually implies that data will be written to memory. (dcache_init, dcache_xfer_memory): Updated. * monitor.c (flush_monitor_dcache, monitor_resume, monitor_load): Updated. * ocd.c (ocd_open, ocd_resume, bdm_reset_command): Updated. * remote-bug.c (bug_load, bug_resume): Updated. * remote-nindy.c (nindy_open, nindy_resume): Updated. * remote-sds.c (sds_open, sds_resume): Updated. * remote-utils.c (gr_open): Updated. * remote.c (remote_open_1, remote_resume, remote_async_resume, remote_cisco_open): Updated. * wince.c (child_create_inferior, child_resume): Updated. * monitor.c (monitor_open): Free dcache before creating a new one. * dcache.c (dcache_free): New function. * dcache.h (dcache_free): New prototype. -------------------------------------------------------------------
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/* Invalidate DCACHE. */
* TODO: Note abstraction layer violation where "ocd reset" command must invalidate the dcache, and how this might be fixed. * monitor.c (#include "dcache.h"): Removed. (remote_dcache): Removed. (monitor_open): Removed code that created local dcache. (flush_monitor_dcache): Removed (unused function). (monitor_resume): Removed call to dcache_invd(). (monitor_load): Likewise. (monitor_xfer_memory): Changed to call monitor_write_memory(), monitor_write_memory_block(), and monitor_read_memory() instead of dcache_xfer_memory(). * monitor.h (flush_monitor_dcache): Removed (unused function). * ocd.c (#include "dcache.h"): Removed. (ocd_dcache): Removed. (ocd_open): Removed code that created local dcache. (ocd_resume): Removed call to dcache_invd(). (ocd_xfer_memory): Changed to call ocd_write_bytes() and ocd_read_bytes() instead of dcache_xfer_memory(). (bdm_reset_command): Invalidate target dcache. * remote-bug.c (bug_load): Remove call to dcache_invd(). (bug_resume): Likewise. (bug_settings): Remove dcache, readfunc, and writefunc fields from initializer. (bug_xfer_memory): Changed to call bug_read_memory() and bug_write_memory() instead of dcache_xfer_memory(). * remote-nindy.c (#include "dcache.h"): Removed. (nindy_dcache): Removed. (nindy_open): Removed code that created local dcache. (nindy_resume): Removed call to dcache_invd(). (nindy_load): Likewise. (nindy_xfer_inferior_memory): Changed to call ninMemPut() and ninMemGet() instead of dcache_xfer_memory(). * remote-sds.c (#include "dcache.h"): Removed. (sds_dcache): Removed. (sds_open): Removed code that created local dcache. (sds_resume): Removed call to dcache_invd(). (sds_xfer_memory): Changed to call sds_write_bytes() and sds_read_bytes() instead of dcache_xfer_memory(). * remote-utils.c (gr_open): Removed code that created local dcache. * remote-utils.h (#include "dcache.h"): Removed. (struct gr_settings): Removed dcache, readfunc, and writefunc fields. (gr_get_dcache, gr_set_dcache): Removed macro definitions. * remote.c (#include "dcache.h"): Removed. (remote_dcache): Removed. (remote_open_1): Removed code that created local dcache. (remote_async_open_1): Likewise. (remote_resume): Removed call to dcache_invd(). (remote_async_resume): Likewise. (remote_xfer_memory): Changed to call remote_write_bytes() and remote_read_bytes() instead of dcache_xfer_memory(). * wince.c (#include "dcache.h"): Removed. (remote_dcache): Removed. (child_create_inferior): Removed code that created local dcache. (child_xfer_memory): Changed to call remote_write_bytes() and remote_read_bytes() instead of dcache_xfer_memory(). (child_resume): Removed call to dcache_invd(). * target.c (target_dcache): Added. (target_load): Invalidate target_dcache. (do_xfer_memory): New function. (target_xfer_memory): Reimplement in terms of dcache_xfer_memory(). (target_xfer_memory_partial): Likewise. (initialize_targets): Create target_dcache. * target.h (#include "dcache.h"): Added. (target_open): Invalidate target_dcache. (target_resume): Likewise. (do_xfer_memory): New declaration. * dcache.c (dcache_init): Removed reading and writing arguments. (dcache_struct): Removed read_memory and write_memory fields. (dcache_write_line): Call do_xfer_memory. (dcache_read_line): Likewise. (dcache_xfer_memory): Likewise. (dcache_invalidate): Renamed from dcache_invd. (dcache_init): Updated. (dcache_xfer_memory): Updated. * dcache.h (memxferfunc): Removed definition.
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void dcache_invalidate (DCACHE *dcache);
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/* Initialize DCACHE. */
* TODO: Note abstraction layer violation where "ocd reset" command must invalidate the dcache, and how this might be fixed. * monitor.c (#include "dcache.h"): Removed. (remote_dcache): Removed. (monitor_open): Removed code that created local dcache. (flush_monitor_dcache): Removed (unused function). (monitor_resume): Removed call to dcache_invd(). (monitor_load): Likewise. (monitor_xfer_memory): Changed to call monitor_write_memory(), monitor_write_memory_block(), and monitor_read_memory() instead of dcache_xfer_memory(). * monitor.h (flush_monitor_dcache): Removed (unused function). * ocd.c (#include "dcache.h"): Removed. (ocd_dcache): Removed. (ocd_open): Removed code that created local dcache. (ocd_resume): Removed call to dcache_invd(). (ocd_xfer_memory): Changed to call ocd_write_bytes() and ocd_read_bytes() instead of dcache_xfer_memory(). (bdm_reset_command): Invalidate target dcache. * remote-bug.c (bug_load): Remove call to dcache_invd(). (bug_resume): Likewise. (bug_settings): Remove dcache, readfunc, and writefunc fields from initializer. (bug_xfer_memory): Changed to call bug_read_memory() and bug_write_memory() instead of dcache_xfer_memory(). * remote-nindy.c (#include "dcache.h"): Removed. (nindy_dcache): Removed. (nindy_open): Removed code that created local dcache. (nindy_resume): Removed call to dcache_invd(). (nindy_load): Likewise. (nindy_xfer_inferior_memory): Changed to call ninMemPut() and ninMemGet() instead of dcache_xfer_memory(). * remote-sds.c (#include "dcache.h"): Removed. (sds_dcache): Removed. (sds_open): Removed code that created local dcache. (sds_resume): Removed call to dcache_invd(). (sds_xfer_memory): Changed to call sds_write_bytes() and sds_read_bytes() instead of dcache_xfer_memory(). * remote-utils.c (gr_open): Removed code that created local dcache. * remote-utils.h (#include "dcache.h"): Removed. (struct gr_settings): Removed dcache, readfunc, and writefunc fields. (gr_get_dcache, gr_set_dcache): Removed macro definitions. * remote.c (#include "dcache.h"): Removed. (remote_dcache): Removed. (remote_open_1): Removed code that created local dcache. (remote_async_open_1): Likewise. (remote_resume): Removed call to dcache_invd(). (remote_async_resume): Likewise. (remote_xfer_memory): Changed to call remote_write_bytes() and remote_read_bytes() instead of dcache_xfer_memory(). * wince.c (#include "dcache.h"): Removed. (remote_dcache): Removed. (child_create_inferior): Removed code that created local dcache. (child_xfer_memory): Changed to call remote_write_bytes() and remote_read_bytes() instead of dcache_xfer_memory(). (child_resume): Removed call to dcache_invd(). * target.c (target_dcache): Added. (target_load): Invalidate target_dcache. (do_xfer_memory): New function. (target_xfer_memory): Reimplement in terms of dcache_xfer_memory(). (target_xfer_memory_partial): Likewise. (initialize_targets): Create target_dcache. * target.h (#include "dcache.h"): Added. (target_open): Invalidate target_dcache. (target_resume): Likewise. (do_xfer_memory): New declaration. * dcache.c (dcache_init): Removed reading and writing arguments. (dcache_struct): Removed read_memory and write_memory fields. (dcache_write_line): Call do_xfer_memory. (dcache_read_line): Likewise. (dcache_xfer_memory): Likewise. (dcache_invalidate): Renamed from dcache_invd. (dcache_init): Updated. (dcache_xfer_memory): Updated. * dcache.h (memxferfunc): Removed definition.
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DCACHE *dcache_init (void);
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* MAINTAINERS: Add myself as dcache.c maintainer. * remote-nindy.c (nindy_load): Invalidate dcache. * dcache.c (dcache_invd): Renamed from dcache_flush. The term flush with respect to caches usually implies that data will be written to memory. (dcache_init, dcache_xfer_memory): Updated. * monitor.c (flush_monitor_dcache, monitor_resume, monitor_load): Updated. * ocd.c (ocd_open, ocd_resume, bdm_reset_command): Updated. * remote-bug.c (bug_load, bug_resume): Updated. * remote-nindy.c (nindy_open, nindy_resume): Updated. * remote-sds.c (sds_open, sds_resume): Updated. * remote-utils.c (gr_open): Updated. * remote.c (remote_open_1, remote_resume, remote_async_resume, remote_cisco_open): Updated. * wince.c (child_create_inferior, child_resume): Updated. * monitor.c (monitor_open): Free dcache before creating a new one. * dcache.c (dcache_free): New function. * dcache.h (dcache_free): New prototype. -------------------------------------------------------------------
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/* Free a DCACHE */
void dcache_free (DCACHE *);
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/* Simple to call from <remote>_xfer_memory */
* TODO: Note abstraction layer violation where "ocd reset" command must invalidate the dcache, and how this might be fixed. * monitor.c (#include "dcache.h"): Removed. (remote_dcache): Removed. (monitor_open): Removed code that created local dcache. (flush_monitor_dcache): Removed (unused function). (monitor_resume): Removed call to dcache_invd(). (monitor_load): Likewise. (monitor_xfer_memory): Changed to call monitor_write_memory(), monitor_write_memory_block(), and monitor_read_memory() instead of dcache_xfer_memory(). * monitor.h (flush_monitor_dcache): Removed (unused function). * ocd.c (#include "dcache.h"): Removed. (ocd_dcache): Removed. (ocd_open): Removed code that created local dcache. (ocd_resume): Removed call to dcache_invd(). (ocd_xfer_memory): Changed to call ocd_write_bytes() and ocd_read_bytes() instead of dcache_xfer_memory(). (bdm_reset_command): Invalidate target dcache. * remote-bug.c (bug_load): Remove call to dcache_invd(). (bug_resume): Likewise. (bug_settings): Remove dcache, readfunc, and writefunc fields from initializer. (bug_xfer_memory): Changed to call bug_read_memory() and bug_write_memory() instead of dcache_xfer_memory(). * remote-nindy.c (#include "dcache.h"): Removed. (nindy_dcache): Removed. (nindy_open): Removed code that created local dcache. (nindy_resume): Removed call to dcache_invd(). (nindy_load): Likewise. (nindy_xfer_inferior_memory): Changed to call ninMemPut() and ninMemGet() instead of dcache_xfer_memory(). * remote-sds.c (#include "dcache.h"): Removed. (sds_dcache): Removed. (sds_open): Removed code that created local dcache. (sds_resume): Removed call to dcache_invd(). (sds_xfer_memory): Changed to call sds_write_bytes() and sds_read_bytes() instead of dcache_xfer_memory(). * remote-utils.c (gr_open): Removed code that created local dcache. * remote-utils.h (#include "dcache.h"): Removed. (struct gr_settings): Removed dcache, readfunc, and writefunc fields. (gr_get_dcache, gr_set_dcache): Removed macro definitions. * remote.c (#include "dcache.h"): Removed. (remote_dcache): Removed. (remote_open_1): Removed code that created local dcache. (remote_async_open_1): Likewise. (remote_resume): Removed call to dcache_invd(). (remote_async_resume): Likewise. (remote_xfer_memory): Changed to call remote_write_bytes() and remote_read_bytes() instead of dcache_xfer_memory(). * wince.c (#include "dcache.h"): Removed. (remote_dcache): Removed. (child_create_inferior): Removed code that created local dcache. (child_xfer_memory): Changed to call remote_write_bytes() and remote_read_bytes() instead of dcache_xfer_memory(). (child_resume): Removed call to dcache_invd(). * target.c (target_dcache): Added. (target_load): Invalidate target_dcache. (do_xfer_memory): New function. (target_xfer_memory): Reimplement in terms of dcache_xfer_memory(). (target_xfer_memory_partial): Likewise. (initialize_targets): Create target_dcache. * target.h (#include "dcache.h"): Added. (target_open): Invalidate target_dcache. (target_resume): Likewise. (do_xfer_memory): New declaration. * dcache.c (dcache_init): Removed reading and writing arguments. (dcache_struct): Removed read_memory and write_memory fields. (dcache_write_line): Call do_xfer_memory. (dcache_read_line): Likewise. (dcache_xfer_memory): Likewise. (dcache_invalidate): Renamed from dcache_invd. (dcache_init): Updated. (dcache_xfer_memory): Updated. * dcache.h (memxferfunc): Removed definition.
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int dcache_xfer_memory (DCACHE *cache, CORE_ADDR mem, char *my, int len,
PARAMS removal.
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int should_write);
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#endif /* DCACHE_H */