* sim-memopt.c (parse_addr): Sunos 4.5 does not hane strtol
declared so we need this cast to prevent long long addresses
from being misconfigures. Results in access to unmapped memory.
[ChangeLog]
Mon Apr 13 16:51:00 1998 Frank Ch. Eigler <fche@cygnus.com>
* Makefile.in (*): Added .vuout/.vuexpect/.vuok test targets
for confirming VU instruction trace.
(t-cop2): Test COP2 sim using above facility.
* t-cop2.vuexpect: New file.
[ChangeLog]
Mon Apr 13 16:28:52 1998 Frank Ch. Eigler <fche@cygnus.com>
* interp.c (decode_coproc): Add proper 1000000 bit-string at top
of VU lower instruction.
VCALLMS-related were found/fixed.
[ChangeLog.sky]
* sky-vu.c ({read,write}_vu_special_reg): Add CMSAR[01] as special
registers for a VU. Behavior not as mandated.
({read,write}_vu_{misc,special}_reg): Create sim_io_error upon
access to unknown register. Behavior not as mandated.
* sky-vu.h (anonymous register numbering enum): Add CMSAR[01].
* sky-libvpe.c (indebug): Cache $ENV{'SKY_DEBUG'}.
[ChangeLog]
* Makefile.in (SIM_SKY_OBJS): Added sky-vudis.o.
* interp.c (decode_coproc): Refer to VU CIA as a "special"
register, not as a "misc" register. Aha. Add activity
assertions after VCALLMS* instructions.
work!
[ChangeLog.sky]
* sky-vu.h (vu_device): Represent "macro instruction just stuffed
into fetch buffer" condition with new "m" bit. Rename old "m" to
"l".
* sky-libvpe.c (indebug): Save snapshot of environment value;
workaround for suspected memory corruption.
(fetch_inst): Respect new "m" macro-instruction flag for reporting
successful fetch to caller.
(exec_inst): Disassemble instruction here instead of fetch time.
Renamed old "m" -> "l" flag in VU state to track interlock
release.
(vpecallms_cycle): Call exec_inst only if fetch_inst did some
work.
* sky-vu.c (vu_attach, vu[01]_device): Revamped initialization to
ensure complete clear of tail part of struct at attach time.
(vu0_busy): Fix thinko.
(vu0_macro_issue): Adapt to new "l" flag.
(vu0_micro_interlock_released): Ditto.
(write_vu_special_reg): Ditto.
(read_vu_special_reg): Compute VBS0/VBS1 bits more explicitly.
The other VU status bits are not yet computed.
[ChangeLog]
* interp.c (decode_coproc): Do not apply superfluous E (end) flag
to upper code of generated VU instruction.
sce*_testN.* corresponds to the original testN/test.*
*.vuasm : MICRO code
*.dvpasm : DMAtag and VIF code description
*.out_gif.dat : GIF output values for the corresponding testcase.
sce_main.c : driver file for the SCE testcases
sce_macro.s : SCE provided macro file needed by the SCE (feb28) testcases
refresh.s : Needed by sce_main.c
Makefile.in : Updated to run make and run the SCE testsuite.
: ----------------------------------------------------------------------
masking facility for PATH3 transfers.
[ChangeLog.sky]
Sun Apr 5 12:11:45 1998 Frank Ch. Eigler <fche@cygnus.com>
* sky-libvpe.c (exec-inst): Added "M" bit detection for upper
instruction.
* sky-pke.c (pke_check_stall): Added more assertions.
(pke_code_mskpath3): Use new GPUIF M3P control register.
* sky-pke.h (VU[01]_CIA): New macros that give VU CIA
pseudo-register addresses.
* sky-vu.h (vu_device, VectorUnitState): Merged structs.
(VectorUnitState.mflag): New field.
(VU_REG_{CMSAR0,CMSAR1,FBRST}) Added missing control registers.
* sky-vu.c (vu0_busy): New function.
(vu0_q_busy): New function.
(vu0_macro_issue): New function.
(vu0_micro_interlock_released): New function.
(vu0_busy_in_{micro,macro}_mode): Deleted stubs.
(vu0_macro_hazard_check): Deleted stubs.
(vu_attach): Adapted code to merged device & state struct.
(read_vu_special_reg): Compute VBS0/VBS1 bits in STAT register.
[ChangeLog]
start-sanitize-sky
Sun Apr 5 12:05:44 1998 Frank Ch. Eigler <fche@cygnus.com>
* interp.c (*): Adapt code to merged VU device & state structs.
(decode_coproc): Execute COP2 each macroinstruction without
pipelining, by stepping VU to completion state. Adapted to
read_vu_*_reg style of register access.
* mips.igen ([SL]QC2): Removed these COP2 instructions.
* r5900.igen ([SL]QC2): Transplanted these COP2 instructions here.
* sim-main.h (cop_[ls]q): Enclosed in TARGET_SKY guards.
end-sanitize-sky
into single PKE-style vu.[ch].
[ChangeLog]
Fri Mar 27 16:19:29 1998 Frank Ch. Eigler <fche@cygnus.com>
start-sanitize-sky
* Makefile.in (SIM_SKY_OBJS): Replaced sky-vu[01].o with sky-vu.o.
* interp.c (sim_{load,store}_register): Use new vu[01]_device
static to access VU registers.
(decode_coproc): Added skeleton of sky COP2 (VU) instruction
decoding. Work in progress.
* mips.igen (LDCzz, SDCzz): Removed *5900 case for this
overlapping/redundant bit pattern.
(LQC2, SQC2): Added *5900 COP2 instruction skeleta. Work in
progress.
* sim-main.h (status_CU[012]): Added COP[n]-enabled flags for
status register.
end-sanitize-sky
* interp.c (cop_lq, cop_sq): New functions for future 128-bit
access to coprocessor registers.
* sim-main.h (COP_LQ, COP_SQ): New macro front-ends for above.
[ChangeLog.sky]
* sky-engine.c (engine_run): Adapted from vu[01] -> vu merge.
* sky-hardware.c (register_devices): Ditto
* sky-pke.c (pke_fifo_*): Made these functions private again, now
that the GPUIF code does not use them.
* sky-pke.h (pke_fifo_*): Removed newly private declarations.
* sky-vu.c (*): Major rework: merge of old sky-vu0.c and
sky-vu1.c. Management of two VU devices parallels two PKEs.
Work in progress.
* sky-vu.h (*): Other half of merge.
(vu_device): New struct, parallel to pke_device.
sky-gs.h: initial drop of GS control registers
Makefile.in: added sky-gs.o to sanitized list
sky-gpuif.c (gif_io_write_buffer): correct memset length error, renamed
trace file for gif
(hw_tree_find_*_property): Clean up error message when property is not found.
* dv-pal.c (hw_pal_io_read_buffer): Check the smp property is present before
looking for it.
hw_pal_timer, hw_pal_timer_value): Define.
(hw_pal_io_read_buffer, hw_pal_io_write_buffer): Add timer support
(do_counter_event, do_counter_read, do_counter_value,
do_counter_write): new functions.
* hw-tree.c (hw_printf): Send tree dump to stderr, same as other
trace output.
* hw-base.c (hw_create): Stop searching for a device when one is
found.
* (stamp-tvals sim-inline.c): Use $(SHELL) when invoking
move-if-change. Fixes NT native build problem.
* Makefile.in (nltvals.def): Use $(SHELL) when invoking
move-if-change. Fixes NT native build problem.
* configure: Regenerate with autoconf 2.12.1 to fix shell issues for
NT native builds.
Tidy up hw-properties error messages.
New device dv-glue.c (copied from ../ppc/hw_glue.)
Only attach a port after a devices initialization has finished.
* sky-pke.h (pke_fifo*): Exported these formerly private functions.
(pke_device): Added FIFO cache fields.
* sky-pke.c (pke_fifo_reset): New function for GPUIF client -
clear FIFO contents.
(pke_pcrel_fifo): Added caching facility to prevent O(n^2) cost for
searching for consecutive operand words.
* sky-libvpe.c (MEM, uMEM): New/changed macros that perform modulo
calculations to handle out-of-range VU memory addresses.
(*): Replaced many previous uses of MEM[] and state->uMEM[] with
calls to above macros.
* sky-vu.h (struct VectorUnitState): Added qw/dw size fields for
MEM/uMEM buffers, for overflow prevention. Renamed MEM/uMEM fields
to catch all their prior users.
* sky-vu0.c (vu0_attach): Manually align MEM0/MEM1 buffers to force
16-byte alignment. (zalloc is not enough.)
* sky-vu1.c (vu1_attach): Ditto.
(init_vu): Store buffer sizes from allocation into VectorUnitState.
* sky-gpuif.h (GifPath): Use a pke_fifo strucf instead of
temporary fixed-size array for flexible FIFO sizing.
* sky-gpuif.c (SKY_GPU2_REFRESH): This is now an integer value to be
used as a modulus for periodic refresh.
(refresh): New function to send GPU2 refresh code periodically.
(*): Use pke_fifo calls to en/dequeue GPUIF tags & operands.
* sky-pke.h (struct pke_device): Added fields to allow caching of
results from recent FIFO searches.
the stand-alone executable.
[in ChangeLog.sky:]
* sky-gpuif.c (call_gs): Call properly into GPU2 library if
configured --with-sim-gpu2. Use SKY_GPU2_REFRESH symbol as
placeholder for future GPU2-refresh policy.
[in ChangeLog:]
* Makefile.in (MIPS_EXTRA_LIBS, SIM_EXTRA_LIBS): Added
configurable settings for stand-alone simulator.
start-sanitize-sky
* configure.in: Added --with-sim-gpu2 option to specify path of
sky GPU2 library. Triggers -DSKY_GPU2 for sky-gpuif.c, and
links/compiles stand-alone simulator with this library.
* interp.c (MEM_SIZE): Increased default sky memory size to 16MB.
end-sanitize-sky
* configure.in: Added X11 search, just in case.
* configure: Regenerated.
will ignore this until next SCEI clarification.
* tsv308_1.trc: Fixed test case as per SCEI email.
* tsv316_1.trc: Ditto.
* tsv408_1.trc: Same.
* tsv416_1.trc: Again.
* t-pke3.trc: Added more padding to one VU test to widen timing race.
* Make-common.in (dv-sockser.o): Add rule for.
* aclocal.m4: Check for fcntl.h.
* config.h: Add HAVE_FCNTL_H.
* sim-break.c (remove_breakpoint): Fix thinko.
* sim-hload.c (sim_load): Provide default value of SIM_HANDLES_LMA.
Use SIM_HANDLES_LMA for lma_p arg to sim_load_file.
of PKE, some old test cases had to be modified. There are suspected bugs
in the SCEI test cases too, so "make check" does not run cleanly at present.
* tss*.trc: New files, generated by perl script from
SCEI "test0" bucket.
* tsv*.trc: New files, generated by perl script from SCEI "test0"
bucket. Note that tsv432_0 may obsolete t-pke1.
* Makefile.in (TESTS): Run new scripts.
(check): Bulldoze through failing test cases with "make -k" until
SCEI fixes some of them.
(.run.ok): Increased run-time limit since some test runs can take
several seconds.
effectively full. The code is believed to be functionally complete now.
Some code cleanup is included at no extra charge in this version.
Fri Mar 13 20:21:57 1998 Frank Ch. Eigler <fche@cygnus.com>
* sky-vu1.c: (dump_mem): Commented out function to satiate
warning-ful compilation.
* sky-pke.c: (pke_reset): New function, called explicitly at
initialization and at FBRST.
(pke_fifo_flush): New function to flush (skip over) existing
quadwords in FIFO.
(pke_fifo_fit): New function to add space for new quadword in
FIFO.
(pke_fifo_access): New function to absolute-index into FIFO.
(pke_fifo_old): New function to remove old quadwords from FIFO.
(pke_begin_interrupt_stall): New function to abstract
interrupt-caused stalls.
(pke_*): Access PKE FIFO only thorugh pke_fifo functions.
(pke_pcrel_*): Renamed pke_pc_* functions.
(pke_code_unpack): Numerous logic tweaks for latest UNPACK
behavior changes & clarifications from SCEI.
* sky-pke.h (struct pke_fifo): New explicit FIFO representation.
(struct pke_device): Use struct above.
(PKE_DEBUG): Removed macro as misnomer.
* sky-hardware.c: Moved *_cmd_install declarations out.
* sky-hardware.h: Moved *_cmd_install declarations in.
define macro STATE_PROG_SYMS.
* sim-trace.c (trace_one_insn): Add variables abfd, symsize,
symbol_count, and asymbols. Call bfd_get_symtab_upper_bound
and bfd_canonicalize_symtab, to get symbol table on first use
and preserve it via STATE_PROG_SYMS for future calls to
bfd_find_nearest_line.
for sim/testsuite/sky:
* t-pke4.run: Removed test, since it succeeds yet returns a
non-zero exit code.
* Makefile.in (RUNOPTS): Removed --memory-size flag, made
unnecessary by sim/mips/interp.c changes.
(TESTS): Removed t-pke4.ok target.
* t-pke3.trc: Classified tests with [---] indicators, to match
items up with entries documented in testplan.sgml. Added numerous
additional tests. They assert behavior that assumes certain
favorable answers to PKE question set #6 to SCEI.
* t-pke1.trc: Added some [---] indicators.
for sim/mips:
* sky-pke.c (pke_issue): Revamped interrupt & stall code. Assume
that ER1/ER0/PIS bits are only set if not masked by ERR bits.
Signal PIS only if unmasked.
(pke_code_error): Signal ER1 only if unmasked.
(pke_pc_fifo): Signal ER0 only if unmasked.
(pke_code_unpack): Round up num_operands for last operand's
partial-word. Factor out "R" bit handling for better coverage
analysis. Fill upper words of a quadword with zeroes for Vn_m
UNPACK with n < 4.
* sky-device.c (device_error): Made function accept varargs.
* sky-device.h (device_error): Changed declaration to match.
* interp.c (sim_open): Made 0x0000 area memory be an alias of
the K0/K1 segments. Sanitized code.
* Makefile.in (vr4320.igen) : Added.
* configure.in (mips64vr4320-*-*): Added.
* configure : Rebuilt.
* mips.igen : Correct the bfd-names in the mips-ISA model entries.
Add the vr4320 model entry and mark the vr4320 insn as necessary.
* sky-vu1.c (vu1_io_write_register_window): Make CIA (pc) write
effective by updating more registers.
* sky-libvpe.c: Updated to match earlier VU state-change code.
* sky-vpe.h: Removed unused globals from declarations.
PKE tests run identically on SPARC/Solaris and x86/Linux.
* sky-pke.c (pke_io_{read,write}_buffer): Endianness fixes aka
"E-fixes" in register and FIFO read/writes.
(pke_code_{pkemscalf,pkemscal}): E-fixes in VU CIA setting.
(pke_code_{mpg,unpack}): E-fixes in VU memory & tracking updates.
(pke_code_direct): E-fixes in GPUIF FIFO stuffing.
* sky-pke.h (PKE_MEM_WRITE): E-fixes in trace file writing.
* sky-vu0.c (vu0_attach): Allocate micro/data memory with zalloc
to guarantee sufficient (16-byte) alignment.
* sky-vu1.c (vu1_attach): Ditto.
(vu1_io_read_register_window): *PARTIAL* E-fixes in register accesses.
* sky-libvpe.c (gif_write): E-fixes in GPUIF FIFO stuffing.
* sky-gpuif.c (gif_io_{read,write}_buffer): E-fixes in
register and FIFO read/writes.
* sky-dma.c (do_dma_transfer_tag): E-fixes in tag reading.
mechanism is starting to subside.
* sky-pke.h (PKE_FLAG_INT_NOLOOP): Added device flag to indicate
presence of stalled & interrupted PKEcode.
* sky-pke.c (pke_issue): Added PKEcode interrupt bit handling.
(pke_flip_dbf): Changed double-buffering logic to match SCEI
clarification.
(pke_code_*): Added interrupt bit stalling clause.
(pke_code_pkems*): Added ITOP/ITOPS transmission code.
(pke_code_unpack): Added more careful logic for processing
overflows of VU data memory addresses.
(engine_resume_full): Keep accurate core profile data.
* cgen-utils.c (sim_disassemble_insn): Don't use
sim_core_read_aligned_N, it messes up profiling results.
* sky-pke.h (PKE_MEM_READ): Removed "read" entry from FIFO trace.
* sky-pke.c (pke_attach): Set trace file to line buffering iff
open.
(pke_io_read_buffer, pke_io_write_buffer): Handle erroneous
reads/writes by zero-padding.
(pke_io_write_buffer): Switch to more bit-field definition macros.
(pke_issue): Remove "stalled" entry from FIFO trace.
(pke_pc_advance): Correct logic for DMA-tag-skipping, PKEcode
classification.
(pke_code_mskpath3): Sketch of possible PATH3 masking method.
(pke_code_mpg): Keep order of lower/upper VU words as supplied.
(pke_code_unpack): Logic change for wl/cl/num unpacking. Weird.
little struct.
interp.c: Update. Also add floating point Max/Min functions.
mips.igen: Remove r5900 tag from any floating point instructions.
r5900.igen: Rewrite. Implement *all* floating point insns (except ld/st).
r5400.igen: Tag mdmx functions as being mdmx specific.
discarded function warning.
* igen.c (main): Clarify -Wnodiscard.
* ld-insn.c (parse_function_record): For functions, allow use of
instruction style function model records
were hammered in today's runs. Work is beginning in endian-proofing
the code.
* sky-pke.c (pke1_issue): Issue on correct PKE device.
(pke_io_write_buffer, pke_code_mpg, pke_code_unpack): Perform more
endian conversions.
(pke_code_mpg, pke_code_direct): Add operand alignment assertions.
(pke_code_mpg): Correct VU stall checks. Correct VU opcode
transfer ordering.
(pke_code_direct): Correct typos in DIRECT operand accessing.
(pke_code_unpack): Correct conditional sign-extension handling.
* sky-gpuif.c (gif_io_read_buffer, gif_io_write_buffer): Correct
assertion polarity.
(gif_read_tag): Disable faulty DMA-tag testing code.
the SCEI PKE simulator's output on its own test sample (tsv432.in).
* sky-pke.h (PKE_MEM_READ, PKE_MEM_WRITE, PKE_REG_MASK_SET): Add
trace file records.
* sky-pke.c: (pke_track_write): Removed function. Replaced with
in-line modifications to VU tracking tables.
(pke_attach): Attach VU tracking tables. Use line buffering on
trace files.
(pke_issue): Spit out additional trace records.
(pke_pc_operand_bits): Correct bitfield masking error.
(*): Replace sim_read/write with kludge PKE_MEM_READ/WRITE
throughout.
(pke_code_unpack): Correct numerous small bugs in operand decoding
etc.
A few PKE instructions even run correctly! Next missing function of
interest: FIFO pruning.
* sky-pke.c (pke_issue): Take extra SIM_DESC argument.
(pke_attach): Attach correct PKE0/PKE1 device. Open trace file if
VIF{0,1}_TRACE_FILE env. var. is defined.
(pke_io_write_buffer): Classify words in FIFO quadword. Use
kludgey sim_core routines to access DMA registers.
(pke_pc_advance): Add PKEcode classification. Correct DMA tag
skipping. Emit trace records.
(pke_pc_fifo): Add PKEcode operand classification.
(pke_check_stall): Perform stall checks against updated register
scheme.
(pke_code_unpack): Correct operand-count calculation.
(pke_code_stmask): Correct instruction skipping.
* sky-pke.h (PKE_MEM_WRITE, PKE_MEM_READ): New kludge macros.
(BIT_MASK_BTW): Corrected off-by-one error.
(enum wordclass): Classify words in a FIFO quadword.
* sky-dma.c (dma_io_read_buffer): Correct address checking assertions.
* sky-engine.c (engine_run): Pass along SIM_DESC to PKE
instruction issue code.
(SEMANTIC_FN): Rewrite declaration.
(DECODE): Update type of semantic_fast member.
({EX,SEM}_FN_NAME): Have only one version.
* cgen.sh: Support building cpu.c.
* sim-base.h (sim_state_base): Delete conditionals surrounding
member scache_size.
* handling of super duper packed UNPACK arguments
* skipping of in-progress instruction on break/stop
* interrupt generation to 5900
* PATH2/PATH3 status checking & masking
* ability to write to FIFO one word (instead of quadword) at a time
* cgen.sh (decode): Add s/@arch@/$arch/.
* genmloop.sh (@cpu@_engine_run): Delete `current_state'.
(engine_resume): Likewise. Make `engine' volatile. Save copy
of cpu pointer in volatile object. Initialize read switch if
-parallel.
update v850, tic80 and mips simulators.
IGEN - Prepend prefix to more generated symbols and macros
(idecode_issue, instruction_word).
IGEN - Add -Wnowith option to supress warnings about word size
inflicts in input files.
MIPS - Clean up Makefile.in, m16.igen, m16.dc (new), m16run.c (new) so
that a mips16 simulator built using IGEN can be compiled.
Use the bfd-processor name in the sim-engine switch.
Add nr_cpus argument to sim_engine_run.
tic80, v850, d30v, mips, common:
Update
mips: Fill in bfd-processor field of model records so that
they match ../bfd/archures.
(sim_size): Use UMEM_SEGMENTS rather than hardwired constant.
(sim_close): Reset prog_bfd to NULL after closing it. Also
reset prog_bfd_was_opened_p after closing prog_bfd.
(sim_load): Reset prog_bfd_was_opened_p after closing prog_bfd.
(sim_create_inferior): Get start address from abfd not prog_bfd.
(xfer_mem): Do bounds checking on addresses and return zero length
read/write on bad addresses, rather than aborting. Prepare to
be able to handle xfers that cross segment boundaries, but not
yet implemented. Only emit debug message when d10v_debug is
set as well as DEBUG being defined.
* arch-defs.h: Deleted.
* mloop.in: Renamed from mainloop.in.
* sem.c: Renamed from semantics.c.
* Makefile.in: Update.
* sem-ops.h: Deleted.
* mem-ops.h: Deleted.
start-sanitize-cygnus
Add cgen support for generating files.
end-sanitize-cygnus
(arch): Renamed from CPU.
* decode.c: Redone.
* decode.h: Redone.
* extract.c: Redone.
* model.c: Redone.
* sem-switch.c: Redone.
* sem.c: Renamed from semantics.c, and redone.
* m32r-sim.h (PROFILE_COUNT_FILLNOPS): Update.
(GETTWI,SETTWI,BRANCH_NEW_PC): Define.
* m32r.c (WANT_CPU,WANT_CPU_M32R): Define.
(m32r_{fetch,store}_register): New functions.
(model_mark_{get,set}_h_gr): Prefix with m32r_.
(m32r_model_mark_{busy,unbusy}_reg): Prefix with m32r_.
(h_cr_{get,set}): Prefix with m32r_.
(do_trap): Fetch state from current_cpu, not current_state.
Call sim_engine_halt instead of engine_halt.
* sim-if.c (alloc_cpu): New function.
(free_state): New function.
(sim_open): Call sim_state_alloc, and malloc space for selected cpu
type. Call sim_analyze_program.
(sim_create_inferior): Handle selected cpu type when setting PC.
start-sanitize-m32rx
(sim_resume): Handle m32rx.
end-sanitize-m32rx
(sim_stop_reason): Deleted.
(print_m32r_misc_cpu): Update.
start-sanitize-m32rx
(sim_{fetch,store}_register): Handle m32rx.
end-sanitize-m32rx
(sim_{read,write}): Deleted.
(sim_engine_illegal_insn): New function.
* sim-main.h: Don't include arch-defs.h,sim-core.h,sim-events.h.
Include arch.h,cpuall.h. Include cpu.h,decode.h if m32r.
start-sanitize-m32rx
Include cpux.h,decodex.h if m32rx.
end-sanitize-m32rx
(_sim_cpu): Include member appropriate cpu_data member for the cpu.
(M32R_MISC_PROFILE): Renamed from M32R_PROFILE.
(sim_state): Delete members core,events,halt_jmp_buf.
Change `cpu' member to be a pointer to the cpu's struct, rather than
record inside the state struct.
* tconfig.in (WITH_DEVICES): Define here.
(WITH_FAST,WITH_SEM_SWITCH_{FULL,FAST}): Define for the cpu.
* cgen.sh: New file.
* cgen-scache.h: Deleted.
* cgen-scache.c: Only compile contents if WITH_SCACHE.
(scache_init): Use runtime computed size of SCACHE.
(scache_flush): Likewise.
* cgen-mem.h (GETIMEMU[QHSD]I): Declare.
([GS]ETT{QI,UQI,HI,UHI,SI,USI,DI,UDI}): Declare.
* cgen-sim.h: Scache support moved here.
(PC): Redo definition.
(ARGBUF,SCACHE,PARALLEL_EXEC): Provide forward decls.
(DECODE): Add parallel execution support.
Only include semantic label members if using switch.
(SWITCH,CASE,BREAK,DEFAULT,ENDSWITCH): Portable computed goto support.
(CGEN_CPU): Delete members exec_state, halt_sigrc, halt_jmp_buf.
(IADDR,CIA,SEM_ARG,EX_FN_NAME,SEM_FN_NAME,RECORD_IADDR,SEM_ARGBUF,
SEM_NEXT_PC,SEM_BRANCH_VIA_{CACHE,ADDR},SEM_NEW_PC_ADDR): Moved here
from cgen-types.h.
(engine_{stop,run,resume,halt,signal}): Delete decls.
* cgen-types.h (CGEN_{XCAT3,CAT3}): Delete.
(argbuf,scache): Delete forward decls.
(STATE): Delete decl.
* cgen-utils.c: Don't include decode.h, mem-ops.h, sem-ops.h.
Include cgen-mem.h, cgen-ops.h.
(engine_halt,engine_signal): Delete.
({ex,exc,sem,semc}_illegal): Delete.
(sim_disassemble_insn): Result of extract fn is in bits.
* genmloop.sh: Rewrite.
For sim/mips, enable multi-sim support when mips64vr5400-elf is target.
For sim/igen, allow specification of a default machine (will need
more work later).
