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* xscale: fix analyze_trace for trace data collected in wrap modeMike Dunn2010-04-151-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes the xscale_analyze_trace() function. This function was defective for a trace collected in 'fill' mode (hiccups with repeated instructions) and completely broken when buffer overflowed in 'wrap' mode. The reason for the latter case is that the checkpoint registers were interpreted incorrectly when two checkpoints are present in the trace (which will be true in 'wrap' mode once the buffer fills). In this case, checkpoint1 register will contain the older entry, and checkpoint0 the newer. The original code assumed the opposite. I eventually gave up trying to understand all the logic of the function, and rewrote it. I think it's much cleaner and understandable now. I have been using and testing this for a few weeks now. I'm confident it hasn't regressed in any way. Also added capability to handle (as best as possible) the case where an instruction can not be read from the loaded trace image; e.g., partial image. This was a 'TODO' comment in the original xscale_analyze_trace(). Outside of xcsale_analyze_trace(), these (related) changes were made: - Remove pc_ok and current_pc elements from struct xscale_trace. These elements and associated logic are useless clutter because the very first entry placed in the trace buffer is always an indirect jump to the address at which execution resumed. This type of trace entry includes the literal address in the trace buffer, so the initial address of the trace is immediately determined from the trace buffer contents and does not need to be recorded when trace is enabled. - Added num_checkpoints to struct xscale_trace_data, which is necessary in order to correctly interpret the checkpoint register contents. - In xscale_read_trace() - Fix potential array out-of-bounds condition. - Eliminate partial address entries when parsing trace (can occur in wrap mode). - Count and record number of checkpoints in trace. - Added small, inlined utility function xscale_display_instruction() to help make the code more concise and clear. TODO: - Save processor state (arm or thumb) in struct xscale_trace when trace is enabled so that trace can be analyzed correctly (currently assumes arm mode). - Add element to struct xscale_trace that records (when trace is enabled) whether vector table is relocated high (to 0xffff0000) or not, so that a branch to an exception vector is traced correctly (curently assumes vectors at 0x0).
* target files shouldn't #include <target/...h>David Brownell2009-12-131-3/+3
| | | | | | | | | | | Make these ".h" files adopt the same policy the ".c" files already follow: don't use <subsystem/...h> syntax for private interfaces. If we ever get reviewed/supported "public" interfaces they should come exclusively from some include/... directory; that'll be the time to switch to <...> syntax for any subsystem's own interfaces. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* ARM: use <target/arm.h> not armv4_5.hDavid Brownell2009-12-071-1/+1
| | | | | | | | | | | | | | Move most declarations in <target/armv4_5.h> to <target/arm.h> and update users. What's left in the older file is stuff that I think should be removed ... the old register cache access stuff, which makes it awkward to support microcontroller profile (Cortex-M) cores. The armv4_5_run_algorithm() declaration was moved too, even though it's not yet as generic as it probably ought to be. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* ARM: misc generic cleanupDavid Brownell2009-12-041-1/+1
| | | | | | | | | | | Remove an undesirable use of the CPSR symbol ... it needs to vanish. Flag mode-to-number stuff as obsolete; say why ... should also vanish. Get rid of no-longer-used mode and state typedefs. Comment a few of the implicit ties to "classic ARM". Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* ARM: rename armv4_5_state_* as arm_state_*David Brownell2009-12-041-1/+1
| | | | | | And make arm_state_strings[] be const. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* change #include "trace.h" to <target/trace.h>Zachary T Welch2009-12-031-1/+1
| | | | | | | | | | | | Changes from the flat namespace to heirarchical one. Instead of writing: #include "trace.h" the following form should be used. #include <target/trace.h> The exception is from .c files in the same directory.
* change #include "armv4_5_mmu.h" to <target/armv4_5_mmu.h>Zachary T Welch2009-12-031-1/+1
| | | | | | | | | | | | Changes from the flat namespace to heirarchical one. Instead of writing: #include "armv4_5_mmu.h" the following form should be used. #include <target/armv4_5_mmu.h> The exception is from .c files in the same directory.
* change #include "armv4_5.h" to <target/armv4_5.h>Zachary T Welch2009-12-031-1/+1
| | | | | | | | | | | | Changes from the flat namespace to heirarchical one. Instead of writing: #include "armv4_5.h" the following form should be used. #include <target/armv4_5.h> The exception is from .c files in the same directory.
* XScale: initial PXA3xx supportMarek Vasut2009-11-291-0/+7
| | | | | | [dbrownell@users.sourceforge.net: user's guide; variant param is optional] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* target_t -> struct targetZachary T Welch2009-11-131-2/+2
| | | | Remove misleading typedef and redundant suffix from struct target.
* image_t -> struct imageZachary T Welch2009-11-131-1/+1
| | | | | | | Remove misleading typedef and redundant suffix from struct image. Also removes the typedef from enum image_type, as it is used in image.h only.
* armv4_5_common_t -> struct armZachary T Welch2009-11-131-1/+1
| | | | Remove misleading typedef and just use struct arm.
* xscale_trace_t -> struct xscale_traceZachary T Welch2009-11-131-3/+3
| | | | Remove misleading typedef and redundant suffix from struct xscale_trace.
* xscale_trace_entry_t -> struct xscale_trace_entryZachary T Welch2009-11-131-3/+3
| | | | Remove misleading typedef and redundant suffix from struct xscale_trace_entry.
* xscale_reg_t -> struct xscale_regZachary T Welch2009-11-131-2/+2
| | | | Remove misleading typedef and redundant suffix from struct xscale_reg.
* xscale_common_t -> struct xscale_commonZachary T Welch2009-11-131-4/+4
| | | | Remove misleading typedef and redundant suffix from struct xscale_common.
* xscale_trace_data_t -> struct xscale_trace_dataZachary T Welch2009-11-131-4/+4
| | | | Remove misleading typedef and redundant suffix from struct xscale_trace_data.
* reg_cache_t -> struct reg_cacheZachary T Welch2009-11-131-1/+1
| | | | Remove misleading typedef and redundant suffix from struct reg_cache.
* armv4_5_mmu_common_t -> struct armv4_5_mmu_commonZachary T Welch2009-11-131-1/+1
| | | | Remove misleading typedef and redundant suffix from struct armv4_5_mmu_common.
* ARM: shrink offsetsDavid Brownell2009-11-051-3/+3
| | | | | | | | | | | | | | | | | | Move various embedded target structs to the beginnings of their containers ... pretty much the way C++ or Obj-C would for single inheritance. This shrinks code that accesses those embedded structs by letting common offsets use smaller instructions. Sample before/after sizes (on amd64): 17181 312 0 17493 4455 arm920t.o 16810 312 0 17122 42e2 arm920t.o Where the "after" is the smaller number, with this patch over the ones leveraging that embedding knowledge. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* XScale uses the new inheritance/nesting schemeDavid Brownell2009-11-051-3/+0
| | | | | | | Use target_to_xscale(), replacing needless pointer traversals and simplifying a bunch of code. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* target: provide container_of()David Brownell2009-11-051-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | Provide a cleaner way to handle single inheritance of targets in C, using the same model Linux does: structs containing other structs, un-nested via calls to a "container_of()" macro that are packaged in typesafe inline functions. Targets already use this containment idiom, but make it much more complicated because they un-nest using embedded "void *" pointers ... in chains of up to five per target, which is all pure needless complication. (Example: arm92x core, arm9tdmi, arm7_9, armv4_5 ... on top of the base "target" class.) Applying this scheme consistently simplifies things, and gets rid of many error-prone untyped pointers. It won't change any part of the type model though -- it just simplifies things. (And facilitates more cleanup later on.) Rule of thumb: where there's an X->arch_info void* pointer, access to that pointer can and should be removed. It may be convenient to set up pointers to some of the embedded structs; and shrink their current "*_common" names (annoyingly long). Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* xscale: always reload handler after resetDavid Brownell2009-10-251-2/+0
| | | | | | | | | | | | | | | | | | | | Remove needless debug handler state. - "handler_installed" became wrong as soon as the second TRST+SRST reset was issued ... so the handler was never reloaded after the reset removed it from the mini-icache. This fixes the bug where subsequent resets fail on PXA255 (if the first one even worked, which is uncommon). Other XScale chips would have problems too; PXA270 seems to have, IXP425 maybe not. - "handler_running" was never tested; it's pointless. Plus a related bugfix: invalidate OpenOCD's ARM register cache on reset. It was no more valid than the XScale's mini-icache. (Though ... such invalidations might be better done in "SRST asserted" callbacks.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* xscale: better fix for debug_handler.binDavid Brownell2009-10-161-6/+0
| | | | | | | | | | | | | Generate a C struct with the data, and use that, instead of an assembly language file. The assembly language causes issues on Darwin and MS-Windows, which don't necessarily use GNU AS; or if they do, don't necessarily use its ELF syntax. It's also better in two other ways: fewer global symbols; and the init-time size check gets optimized away at compile time. (Unless it fails, in which case bigger chunks of the file vanish.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* simplify XScale debug handler installationDavid Brownell2009-10-121-0/+6
| | | | | | | | | | | | | | | | | | | Load the XScale debug handler from the read-only data section instead of from a separate file that can get lost or garbaged. This eliminates installation and versioning issues, and also speeds up reset handling a bit. Plus some minor bits of cleanup related to loading that handler: comments about just what this handler does, and check fault codes while writing it into the mini-icache. The only behavioral changes should be cleaner failure modes after errors during handler loading, and being a bit faster. NOTE: presumes GNU assembly syntax, with ".incbin"; and ELF, because of the syntax of the ".size" directive. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* more xscale cleanup (mostly removing JTAG hooks)David Brownell2009-10-121-17/+7
| | | | | | | | | | | | | | | | Streamline/shrink some needless JTAG stuff: - Use #defines for the JTAG instructions; they can't ever change - Remove an unused (!) shadow of tap->ir_length - Stop using a copy of target->tap - Don't bother saving the variant after sanity checking ir_length Also, make target_create() work as on other targets: build the register cache later, making init_target() no longer be a NOP. Handle malloc failure; remove a comment that was obsoleted by the not-so-new target syntax. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* Andreas Fritiofson <andreas.fritiofson@gmail.com> UTF8 fixesoharboe2009-07-171-1/+1
| | | | git-svn-id: svn://svn.berlios.de/openocd/trunk@2549 b42882b7-edfa-0310-969c-e2dbd0fdcd60
* Remove whitespace at end of lines, step 1.zwelch2009-06-231-14/+14
| | | | | | | - Replace '\s*$' with ''. git-svn-id: svn://svn.berlios.de/openocd/trunk@2379 b42882b7-edfa-0310-969c-e2dbd0fdcd60
* Transform 'u32' to 'uint32_t' in src/targetzwelch2009-06-181-16/+16
| | | | | | | | - Replace '\([^_]\)u32' with '\1uint32_t'. - Replace '^u32' with 'uint32_t'. git-svn-id: svn://svn.berlios.de/openocd/trunk@2279 b42882b7-edfa-0310-969c-e2dbd0fdcd60
* Transform 'u16' to 'uint16_t'zwelch2009-06-181-1/+1
| | | | | | | | - Replace '\([^_]\)u16' with '\1uint16_t'. - Replace '^u16' with 'uint16_t'. git-svn-id: svn://svn.berlios.de/openocd/trunk@2277 b42882b7-edfa-0310-969c-e2dbd0fdcd60
* Transform 'u8' to 'uint8_t' in src/targetzwelch2009-06-181-4/+4
| | | | | | | | - Replace '\([^_]\)u8' with '\1uint8_t'. - Replace '^u8' with 'uint8_t'. git-svn-id: svn://svn.berlios.de/openocd/trunk@2274 b42882b7-edfa-0310-969c-e2dbd0fdcd60
* Audit and eliminate redundant #include directives in other target files.zwelch2009-05-111-4/+1
| | | | git-svn-id: svn://svn.berlios.de/openocd/trunk@1715 b42882b7-edfa-0310-969c-e2dbd0fdcd60
* jtag newtap change & huge manual updateduane2008-11-301-1/+1
| | | | git-svn-id: svn://svn.berlios.de/openocd/trunk@1194 b42882b7-edfa-0310-969c-e2dbd0fdcd60
* more error handling and removed force breakpoints as that is handled by a ↵oharboe2008-11-021-1/+0
| | | | | | more generic gdb command git-svn-id: svn://svn.berlios.de/openocd/trunk@1125 b42882b7-edfa-0310-969c-e2dbd0fdcd60
* - added myself to copyright on files i remember adding large contributions ↵ntfreak2008-09-201-1/+1
| | | | | | | | | for over the years - cleaned up headers to match rest of code - added missing svn props for previously added files git-svn-id: svn://svn.berlios.de/openocd/trunk@987 b42882b7-edfa-0310-969c-e2dbd0fdcd60
* added yours sincerely for files where I feel that I've made non-trivial ↵oharboe2008-07-251-0/+3
| | | | | | contributions. git-svn-id: svn://svn.berlios.de/openocd/trunk@872 b42882b7-edfa-0310-969c-e2dbd0fdcd60
* - added "xscale fast_memory_access" which speeds up memoryoharboe2008-02-241-0/+2
| | | | | | | | | access by disabling "unecessary" checks. - arm926ejs. Added missing type->mmu and type->virt2phys fn's. for now these are used by working_area when specifying mmu enabled and mmu not enabled address git-svn-id: svn://svn.berlios.de/openocd/trunk@335 b42882b7-edfa-0310-969c-e2dbd0fdcd60
* - renamed "xscale dump_trace_buffer" to "xscale dump_trace" and added code ↵drath2007-08-171-2/+2
| | | | | | for it git-svn-id: svn://svn.berlios.de/openocd/trunk@198 b42882b7-edfa-0310-969c-e2dbd0fdcd60
* - fixed endianness helper macros (thanks to obilix and wiml for finding and ↵drath2007-06-281-3/+40
| | | | | | | | | | | | | fixing this bug) - added declarations for 32bit fileio access functions (network byte order) - fixed bug in etm trace dump file handling - added XScale trace buffer decoding - fixed arm_simulator ERROR numbers (-7xx used twice) - fixed minor bug in debug output in stellaris.c git-svn-id: svn://svn.berlios.de/openocd/trunk@178 b42882b7-edfa-0310-969c-e2dbd0fdcd60
* - merged XScale branch back into trunkdrath2007-03-281-0/+145
- fixed some compiler warnigns in amt_jtagaccel.c, bitbang.c, parport.c - free working area and register stuff if str7x block write algorithm failed - check PC after exiting a target algorithm in armv4_5.c git-svn-id: svn://svn.berlios.de/openocd/trunk@135 b42882b7-edfa-0310-969c-e2dbd0fdcd60
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