1 1999-01-25 Hugo Tyson <hmt@cygnus.co.uk>
3 * interf.c (run_sim): Fix a bug in the main loop's handling of
4 annulled delay slot instructions. There is precedent for this
5 change; the _other_ main loop in sis.c gets it right according to
6 my reading of the code.
8 The bug is: if an interrupt happens when the next instruction
9 (at sregs->pc) is annulled, the trap is taken (by execute_trap())
10 with the current values of PC and NPC, so when the trap returns,
11 the annulled instruction is indeed executed. Another giveaway is
12 that the annul flag is cleared in execute_trap(): the information
13 is demonstrably discarded.
15 The solution is: perform annulling before looking for traps, in
16 fact it's neater to do annulling, see if there's an interrupt and
17 if not, do the instruction, then handle traps be they generated by
18 interrupts pending or by the instruction we might just have done.
19 That's what the sis.c one does.
21 1999-01-20 Hugo Tyson <hmt@cygnus.co.uk>
23 * sis.h: Add asr17 register for support of SparcLITE (at least the
24 Hitachi ones I find before me)
26 * exec.c (dispatch_instruction): Case WRY: Allow write of asr17 if
27 sparclite. Other ASR numbers than 17 or 0 (Y) trap out.
28 Case RDY: Allow read of asr17 if sparclite. Other ASRs ditto.
29 (execute_trap): Do single-vector-trapping if asr17 bit 0 is set.
30 (init_regs): Initialize y and asr17.
31 NB: In instruction-set space, the Y register is asr0; the
32 instructions have different names for human reasons only.
35 * interf.c: Set boolean mode variable dumbio if invoked with
36 argument "-dumbio" and mention it of verbose.
37 * erc32.c: if "dumbio" is set, do not assume that there is a
38 terminal type device attached to stdin/stdout. Do not set
39 buffering or mess with tcsetattr or do any read operations in
40 order to make UART interrupts; not input data is supported.
41 This is necessary to allow the sim to be used within the eCos
42 testing infrastructure where stdin/stdout are pipes to a TCL
43 program; the sim hangs otherwise.
45 Thu Jul 23 07:17:03 1998 Mark Alexander <marka@cygnus.com>
47 * exec.c (dispatch_instruction): Add SPARClite 'scan' instruction.
49 Tue Jul 7 21:12:41 1998 Mark Alexander <marka@cygnus.com>
51 * func.c (bfd_load): Add special handling of a.out executables.
53 Sat Jun 13 08:33:25 1998 Mark Alexander <marka@cygnus.com>
55 * func.c (bfd_load): Print correct endianness.
56 * interf.c (run_sim): Print debugging information if verbosity level
58 (sim_open): Repeated -v options now increment verbosity level.
59 (sim_store_register): Handle little-endian case.
60 (flush_window): Print debugging information if verbosity level
63 Tue Jun 2 15:20:35 1998 Mark Alexander <marka@cygnus.com>
65 * interf.c (sim_open): Use revamped memory_read, which makes
66 byte-swapping unnecessary. Add -sparclite-board option for
67 emulating RAM found on typical SPARClite boards. Print
68 error message for unrecognized option.
69 * erc32.c: Change RAM address and size from constants to variables,
70 to allow emulation of SPARClite board RAM.
71 (fetch_bytes, store_bytes): New helper functions for revamped
72 mememory_read and memory_write.
73 (memory_read, memory_write): Rewrite to store bytes in target
74 byte order instead of storing words in host byte order; this
75 greatly simplifies support of little-endian programs.
76 (get_mem_ptr): Remove unnecessary byte parameter.
77 (sis_memory_write, sis_memory_read): Store words in target
78 byte order instead of host byte order.
79 (byte_swap_words): Remove, no longer needed.
80 * sis.h ((byte_swap_words): Remove declaration, no longer needed.
81 (memory_read): Add new sz parameter.
82 * sis.c (run_sim): Use revamped memory_read, which makes
83 byte-swapping unnecessary.
84 * exec.c (dispatch_instruction): Use revamped memory_read, which
85 makes byte-swapping and double-word fetching unnecessary.
86 * func.c (sparclite_board): Declare new variable.
87 (get_regi): Handle little-endian data.
88 (bfd_load): Recognize little-endian SPARClite as having
91 Fri May 22 14:23:16 1998 Mark Alexander <marka@cygnus.com>
93 * erc32.c (port_init): Print messages only if sis_verbose is true.
94 * func.c (bfd_load): Ditto.
95 * interf.c (sim_open): Ditto.
97 Thu May 14 23:10:48 1998 Mark Alexander <marka@cygnus.com>
99 * sis.h (uint64, int64): Define.
100 * exec.c (SDIV, SDIVCC, UDIV, UDIVCC): Define new opcodes.
101 * (mul64): Simplify calculation of negative result.
102 * (div64): New helper function for 64-bit division.
103 * (dispatch_instruction): Add emulation of SDIV, SDIVCC, UDIV,
106 Wed May 13 14:59:54 1998 Mark Alexander <marka@cygnus.com>
108 * erc32.c (close_port): Don't close stdin; it kills GDB.
109 (byte_swap_words): New function.
110 * sis.h: (byte_swap_words): Declare.
111 * interf.c (run_sim): Always fetch instructions as big-endian.
112 * sis.c (run_sim): Ditto.
114 Tue Apr 28 18:33:31 1998 Geoffrey Noer <noer@cygnus.com>
116 * configure: Regenerated to track ../common/aclocal.m4 changes.
118 Sun Apr 26 15:31:55 1998 Tom Tromey <tromey@creche>
120 * configure: Regenerated to track ../common/aclocal.m4 changes.
123 Sun Apr 26 15:20:17 1998 Tom Tromey <tromey@cygnus.com>
125 * acconfig.h: New file.
126 * configure.in: Reverted change of Apr 24; use sinclude again.
128 Fri Apr 24 14:16:40 1998 Tom Tromey <tromey@creche>
130 * configure: Regenerated to track ../common/aclocal.m4 changes.
133 Fri Apr 24 11:19:52 1998 Tom Tromey <tromey@cygnus.com>
135 * configure.in: Don't call sinclude.
137 Sat Apr 18 12:00:16 1998 Mark Alexander <marka@cygnus.com>
139 * func.c (disp_fpu): Fix build problem on big-endian hosts.
141 Wed Apr 8 19:33:34 1998 Mark Alexander <marka@cygnus.com>
143 * erc32.c (sim_stop): Handle SIGINT gracefully.
144 * interf.c (sim_open): Don't catch SIGINT; GDB will do that for us.
146 Wed Apr 8 18:29:40 1998 Mark Alexander <marka@cygnus.com>
148 * exec.c (dispatch_instruction): Change how carry out is calculated
149 in DIVSCC. Add emulation of SMULCC, UMUL, and UMULCC.
151 Sat Apr 4 20:36:25 1998 Andrew Cagney <cagney@b1.cygnus.com>
153 * configure: Regenerated to track ../common/aclocal.m4 changes.
155 Wed Apr 1 21:19:18 1998 Mark Alexander <marka@cygnus.com>
157 * end.c: Update to version 2.7.5, fix compiler warnings and bugs.
167 Fri Mar 27 16:15:52 1998 Andrew Cagney <cagney@b1.cygnus.com>
169 * configure: Regenerated to track ../common/aclocal.m4 changes.
171 Wed Mar 25 12:35:29 1998 Andrew Cagney <cagney@b1.cygnus.com>
173 * configure: Regenerated to track ../common/aclocal.m4 changes.
175 Wed Mar 18 12:38:12 1998 Andrew Cagney <cagney@b1.cygnus.com>
177 * configure: Regenerated to track ../common/aclocal.m4 changes.
179 Tue Feb 17 12:41:11 1998 Andrew Cagney <cagney@b1.cygnus.com>
181 * interf.c (sim_store_register, sim_fetch_register): Pass in
182 length parameter. Return -1.
184 Sun Feb 1 16:47:51 1998 Andrew Cagney <cagney@b1.cygnus.com>
186 * configure: Regenerated to track ../common/aclocal.m4 changes.
188 Sat Jan 31 18:15:41 1998 Andrew Cagney <cagney@b1.cygnus.com>
190 * configure: Regenerated to track ../common/aclocal.m4 changes.
192 Mon Jan 19 22:26:29 1998 Doug Evans <devans@seba>
194 * configure: Regenerated to track ../common/aclocal.m4 changes.
196 Mon Dec 15 23:17:11 1997 Andrew Cagney <cagney@b1.cygnus.com>
198 * configure: Regenerated to track ../common/aclocal.m4 changes.
201 Thu Dec 4 09:21:05 1997 Doug Evans <devans@canuck.cygnus.com>
203 * configure: Regenerated to track ../common/aclocal.m4 changes.
205 Fri Oct 3 09:28:00 1997 Andrew Cagney <cagney@b1.cygnus.com>
207 * configure: Regenerated to track ../common/aclocal.m4 changes.
209 Wed Sep 24 17:38:57 1997 Andrew Cagney <cagney@b1.cygnus.com>
211 * configure: Regenerated to track ../common/aclocal.m4 changes.
213 Tue Sep 23 11:04:38 1997 Andrew Cagney <cagney@b1.cygnus.com>
215 * configure: Regenerated to track ../common/aclocal.m4 changes.
217 Mon Sep 22 11:46:20 1997 Andrew Cagney <cagney@b1.cygnus.com>
219 * configure: Regenerated to track ../common/aclocal.m4 changes.
221 Fri Sep 19 17:45:25 1997 Andrew Cagney <cagney@b1.cygnus.com>
223 * configure: Regenerated to track ../common/aclocal.m4 changes.
225 Mon Sep 15 17:36:15 1997 Andrew Cagney <cagney@b1.cygnus.com>
227 * configure: Regenerated to track ../common/aclocal.m4 changes.
229 Wed Aug 27 18:13:22 1997 Andrew Cagney <cagney@b1.cygnus.com>
231 * configure: Regenerated to track ../common/aclocal.m4 changes.
234 Tue Aug 26 10:38:20 1997 Andrew Cagney <cagney@b1.cygnus.com>
236 * float.c (__setfpucw): Compile on any i386 target. Not just NT.
238 * interf.c (sim_kill): Delete.
239 (sim_create_inferior): Add ABFD argument. Initialize PC from ABFD
241 (sim_load): Don't save start address.
242 (start_address): Delete variable.
244 Mon Aug 25 17:50:22 1997 Andrew Cagney <cagney@b1.cygnus.com>
246 * configure: Regenerated to track ../common/aclocal.m4 changes.
249 Mon Aug 25 16:19:49 1997 Andrew Cagney <cagney@b1.cygnus.com>
251 * interf.c (sim_open): Add ABFD argument. Change ARGV to PARGV.
253 Mon Jun 30 11:45:25 1997 Doug Evans <dje@canuck.cygnus.com>
255 * Makefile.in (install-sis): Change $(srcdir)/sis to sis.
257 Wed May 28 09:46:13 1997 Andrew Cagney <cagney@b1.cygnus.com>
259 * interf.c (sim_set_callbacks): Drop SD argument - not applicable.
260 (sim_open): Add callback arg, save it.
262 Thu Apr 24 00:39:51 1997 Doug Evans <dje@canuck.cygnus.com>
264 * configure: Regenerated to track ../common/aclocal.m4 changes.
266 Tue Apr 22 11:05:01 1997 Doug Evans <dje@canuck.cygnus.com>
268 * interf.c (sim_open): Undo patch to add -E support.
270 Thu Apr 17 03:03:56 1997 Doug Evans <dje@canuck.cygnus.com>
272 * interf.c (sim_open): Ignore -E arg.
273 (start_address): New static local.
274 (sim_load): Return SIM_RC. New arg abfd. Set start_address from bfd.
275 (sim_create_inferior): Return SIM_RC. Delete arg start_address.
277 Tue Apr 15 15:16:11 1997 Ian Lance Taylor <ian@cygnus.com>
279 * Makefile.in (install-sis): Depend upon installdirs. Use
280 $(program_transform_name) directly, rather than using
283 Mon Apr 7 15:45:02 1997 Andrew Cagney <cagney@kremvax.cygnus.com>
285 * configure: Regenerated to track ../common/aclocal.m4 changes.
288 Wed Apr 2 15:06:28 1997 Doug Evans <dje@canuck.cygnus.com>
290 * interf.c (sim_open): New arg `kind'.
292 * configure: Regenerated to track ../common/aclocal.m4 changes.
294 Wed Apr 2 14:34:19 1997 Andrew Cagney <cagney@kremvax.cygnus.com>
296 * configure: Regenerated to track ../common/aclocal.m4 changes.
298 Mon Mar 17 15:10:07 1997 Andrew Cagney <cagney@kremvax.cygnus.com>
300 * configure: Re-generate.
302 Thu Mar 13 12:46:04 1997 Doug Evans <dje@canuck.cygnus.com>
304 * interf.c (sim_open): New SIM_DESC result. Argument is now in
306 (other sim_*): New SIM_DESC argument.
308 Tue Feb 4 13:35:20 1997 Doug Evans <dje@canuck.cygnus.com>
310 * Makefile.in (@COMMON_MAKEFILE_FRAG): Use
311 COMMON_{PRE,POST}_CONFIG_FRAG instead.
312 * configure.in: sinclude ../common/aclocal.m4.
313 * configure: Regenerated.
315 Thu Jan 23 11:46:23 1997 Stu Grossman (grossman@critters.cygnus.com)
317 * configure configure.in Makefile.in: Update to new configure
318 scheme which is more compatible with WinGDB builds.
319 * configure.in: Improve comment on how to run autoconf.
320 * configure: Re-run autoconf to get new ../common/aclocal.m4.
321 * Makefile.in: Use autoconf substitution to install common
324 Wed Dec 4 18:25:04 1996 Rob Savoye <rob@chinadoll.cygnus.com>
326 * interf.c (run_sim): Stop the simulator and reset the stdio after
329 Tue Dec 3 11:54:37 1996 Rob Savoye <rob@chinadoll.cygnus.com>
331 * configure.in: Look for libtermcap.a.
332 * Makefile.in: Only link in -ltermcap if it exists.
333 * erc32.c: Update to version 2.6a. Fix uart handling.
334 * exec.c: Update to version 2.6a. Add sparclite support.
335 * float.c: Update to version 2.6a. Convert comments to
336 preprocessor warnings. Add __setfpucw() for i385 hosts so floating
337 point exceptions work on win32.
338 * func.c: Update to version 2.6a. Fix uart handling, add support
339 for user error traps.
340 * help.c: Update to version 2.6a. Add help note on user error
342 * interf.c: Update to version 2.6a. Fix uart handling, and add
344 * examples/gccx: Use sparclite cross compiler, not native gcc.
345 * examples/srt0.S: Use "mov" rather than "wr" for manipulating
348 Mon Nov 25 08:28:10 1996 Fred Fish <fnf@cygnus.com>
350 * Makefile.in (run.o): Remove this rule, it hides the one in
351 ../common/Make-common.in that correctly references the source
352 in the sibling ../common directory.
354 Wed Nov 20 01:30:12 1996 Doug Evans <dje@canuck.cygnus.com>
356 * Makefile.in: Delete stuff moved to ../common/Make-common.in.
357 (SIM_{OBJS,EXTRA_LIBS,EXTRA_LIBDEPS,EXTRA_ALL,EXTRA_INSTALL}): Define.
358 (SIM_{EXTRA_CLEAN,EXTRA_CFLAGS}): Define.
359 * configure.in: Simplify using macros in ../common/aclocal.m4.
360 Call AC_CHECK_HEADERS(stdlib.h).
361 * configure: Regenerated.
362 * config.in: New file.
363 * func.c (sim_set_callbacks): Delete, moved to
364 * interf.c (sim_set_callbacks): here.
365 (sim_callback): New global.
366 Rewrite all calls to printf_filtered to go through callback.
367 (sim_size,sim_trace): New functions.
368 (sim_{insert,remove}_breakpoint): #if 0 out.
369 * sis.c: #include "config.h". #include <stdlib.h> if present.
370 (main): Coerce fprintf arg to INIT_DISASSEMBLE_INFO to fprintf_ftype.
371 * sis.h: #include "callback.h".
372 * run.c: Deleted, using one in ../common now.
374 Thu Oct 3 16:12:03 1996 Jason Molenda (crash@godzilla.cygnus.co.jp)
376 * Makefile.in (clean): Move config.log to distclean.
378 Wed Oct 2 16:57:57 1996 Jason Molenda (crash@godzilla.cygnus.co.jp)
380 * Makefile.in (clean): Also remove config.log.
382 Sat Sep 14 00:00:46 1996 Ian Lance Taylor <ian@cygnus.com>
384 * Makefile.in (CC_FOR_BUILD): New variable.
385 (AR, AR_FLAGS, BISON, MAKEINFO): Remove duplicate variables.
386 (RANLIB, CC): Likewise.
387 (end): Use $(CC_FOR_BUILD), not $(CC).
388 * configure.in: Set CC_FOR_BUILD.
389 * configure: Rebuild.
391 Sun Sep 8 14:04:37 1996 Stu Grossman (grossman@critters.cygnus.com)
393 * erc32.c (port_init): Disable this for __GO32__ (got no pty's
396 Mon Aug 12 17:04:58 1996 Stu Grossman (grossman@critters.cygnus.com)
398 * erc32.c: Don't include sys/ioctl.h or sys/file.h. They aren't
400 * (port_init): Don't even *try* to open pty's under _WIN32.
401 * Use SIM_ADDR, not caddr_t for declaring vars that hold addresses.
402 * float.c: Get rid of #warning. Makes Microsoft C barf.
403 * interf.c (sim_open): Cast fprintf to (fprintf_ftype) to fix
405 * (sim_load sim_create_inferior sim_read): Use prototypes only in
407 * Get rid of enum sim_stop. It's defined in remote-sim.h.
408 * (sim_stop_reason): Define SIGTRAP if _WIN32.
409 * sis.h: Include ansidecl.h and remote-sim.h.
411 Wed Jul 3 16:05:23 1996 Stu Grossman (grossman@critters.cygnus.com)
413 * erc32.c (mec_reset mec_read mec_write memory_read memory_write),
414 sis.h: Get rid of all uses of long long's.
415 * (close_port read_uart write_uart uarta_tx): Don't seg fault
416 when can't open pty's.
417 * exec.c: Add two new instructions: smul, and divscc.
418 * interf.c (flush_windows): New routine to flush the register
419 windows out to the stack just before returning to GDB. Makes
420 backtraces work much better.
422 Wed Jun 26 12:19:11 1996 Jason Molenda (crash@godzilla.cygnus.co.jp)
424 * Makefile.in (bindir, libdir, datadir, mandir, infodir, includedir,
425 INSTALL_PROGRAM, INSTALL_DATA): Use autoconf-set values.
426 (docdir, oldincludedir): Removed.
427 * configure.in (AC_PREREQ): autoconf 2.5 or higher.
428 (AC_PROG_INSTALL): Added.
429 * configure: Rebuilt.
431 Mon Jun 24 14:19:07 1996 Ian Lance Taylor <ian@cygnus.com>
433 * configure.in: Call AC_PROG_CC before running configure.host.
434 * configure: Rebuild with autoconf 2.10.
436 Tue Jun 4 10:37:12 1996 Tom Tromey <tromey@csk3.cygnus.com>
438 * Makefile.in (install): Don't check to see if tooldir exists.
439 Make $(tooldir) and $(tooldir)/bin.
441 Mon Jun 3 12:33:38 1996 Ian Lance Taylor <ian@cygnus.com>
443 * Makefile.in (end.h): Use explicit ./ when running end.
445 Sun May 19 21:05:31 1996 Rob Savoye <rob@chinadoll.cygnus.com>
447 * func.c(bfd_load): Don't try to print the filename if the pfbd is
449 * interf.c(sim_load): Pass the whole string, not just the first
455 * Fixed bug in "go" command.
460 * Fixed bug in interrupt force register (erc32.c).
462 * Change file load function to use bfd_openr.
464 * SIS should now be endian independent.
469 * Fixed FPU timing - some sequences of FPU instructions did not calculate
470 the resource dependencies right.
472 * Corrected STDFQ when qne = 0 (again!). The ftt is set to sequence_error
473 but no FPU trap is generated.
475 version 1.7.1 31-10-95
478 * Corrected STDFQ when qne = 0. Now, a trap is immidiately generated but
479 the FPU stays in execute mode.
481 * Corrected JMPL and RETT timing (these instructions takes two cycles).
487 * Interrupt during annuled instruction corrupted return address - fixed.
490 version 1.6.2 25-10-95
493 * Added -DFAST_UART to Makefile
496 version 1.6.1 24-10-95
499 * Fixed bug in STDFQ which caused bus error
505 * Modified srt0.s to include code that initiates registers in IU and FPU
506 and initializes the data segment. The simulator 'load' command does not
507 longer initialize the data segment!
509 * Corrected MEC timer operation; scalers now divide the frequency by
512 * MEC breakpoints are not checked during store operation
518 * Fixed some bugs in the cycle counting for IU & FPU instructions.
520 * Fixed bug that allowed an annuled instruction to cause memory exception.
522 * The *ws parameter in mem.c should now contain the number of waitstates
523 required by the memory access (was total number of cycles).
525 * The supplied srt0.s now clears the BSS (thanks Joel).
530 * Added a '-g' switch to enable/disable the GNU readline(), which cause
531 some problems on solaris 2.x machines.
533 * Enabled MEC watchpoint and breakpoint function to mem.c. Performance
536 NOTE: The UARTs are now connected to /dev/ttypc and /dev/ttypd.
541 * Fixed bug in mulscc instruction (how could that ever have worked?)
543 * Fixed bug in UART B (flushed characters on UART A), thanks Paul.
548 * Fixed bug in interrupt handling (wrong interrupt selected when more that
549 one interrupt pending)
551 * Fixed updating of condition codes during logical instructions (carry and
552 overflow were not reset)
554 * Fixed bug in WRTBR (tt field was wrongly over-written)
559 * Fixed several bugs in the interrupt handler and callback routines.
560 (reported by Paul Warren, Alsys)