[deliverable/binutils-gdb.git] / sim / v850 / ChangeLog

Wed Sep 17 16:21:08 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * simops.c: Move "mov", "reti", to v850.igen, fix tracing.
        
        * interp.c (hash): Delete.

        * v850.igen (nop): Really do nothing.

        * interp.c (do_interrupt): Mask interrupts after PSW is saved, not
        before.
        * v850.igen (reti): Return to current PC not previous.

start-sanitize-v850e
Wed Sep 17 14:02:10 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * simops.c: Move "ctret", "bsw", "hsw" to v850.igen, fix tracing.
        (trace_module): Global, save component/module name across insn.

        * simops.c: Move "bsh" to v850.igen, fix.
        
        * v850.igen (callt): Load correct number of bytes. Fix tracing.
        (stsr, ldsr): Correct src, dest fields. Fix tracing.
        (ctret): Force alignment.  Fix tracing.
        
end-sanitize-v850e
Tue Sep 16 22:14:01 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * simops.c (trace_output): Add result argument.
        (trace_result): New function.  Simpler version of trace_output,
        assumes trace needed.
        (trace_output): Call trace_result.
        (trace_output): For IMM_REG_REG, trace correct register.
        (trace_input): Add case for 16bit immediates.
        (OP_600, OP_640, OP_680, OP_6C0, OP_6A0): Use.

        * sim-main.h (TRACE_ALU_INPUT, TRACE_ALU_RESULT): Define.
        (trace_values, trace_name, trace_pc, trace_num_values): Make
        global.
        (GR, SR): Define.
        
        v850.insn (movea, stsr): Use.
start-sanitize-v850e
        (sxb, sxh, zxb, zxh): Ditto.
end-sanitize-v850e
        
Tue Sep 16 21:14:01 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * simops.c: Move "movea" from here.
        * v850.igen: To here.

        * v850.igen (simm16): Define, sign extend imm16.
        (uimm16): Define, no sign extension.
        (addi, andi, movea, movhi, mulhi, ori, satsubi, xori): Use.
        
start-sanitize-v850e
        * simops.c: Move "sxh", "switch", "sxb", "callt", "dispose",
        "mov32" from here.
        * v850.igen: To here.
        (switch): Fix off by two error in NIA calc.
        
end-sanitize-v850e
Tue Sep 16 15:14:01 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * simops.c (trace_pc, trace_name, trace_values, trace_num_values):
        New static globals.
        (trace_input): Just save pc, name and values for trace_output.
        (trace_output): Write trace values to a buffer.  Use
        trace_one_insn to print trace info and buffer.
        (SIZE_OPERANDS, SIZE_LOCATION): Delete.
        
Tue Sep 16 09:02:00 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (struct _sim_cpu): Add psw_mask so that reserved bits
        can be masked out.

        * simops.c (OP_2007E0, OP_4007E0): Move "ldsr", "stsr"
        instructions from here.
        * v850.igen (ldsr, stsr): To here.  Mask out reserved bits when
        setting PSW.
        
        * interp.c (sim_open): Set psw_mask if machine known.

Tue Sep 16 10:20:00 1997  Andrew Cagney  <cagney@b1.cygnus.com>

start-sanitize-v850e
        * v850-dc: Add rule to diferentiate between breakpoint and divh.
        * v850.igen (break): New instruction, breakpoint simulator.

end-sanitize-v850e
        * v850.igen (breakpoint): Enable.  Change to a 32bit instruction.

start-sanitize-v850e
Mon Sep 15 18:44:05 1997  Jim Wilson  <wilson@cygnus.com>

        * simops.c (Multiply64): Don't store into register zero.

start-sanitize-v850e
Tue Sep 16 09:02:00 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * Makefile.in (semantics.o): Add dependency.

        * sim-main.h (SAVE_1, SAVE_2): Perform backward compatible save,
        do not adjust CIA/NIA.

Mon Sep 15 17:36:15 1997  Andrew Cagney  <cagney@b1.cygnus.com>

start-sanitize-v850eq
        * simops.c (OP_300, OP_400, OP_70): Make behavour depend on PSW[US].
        
        * simops.c: Move "divun", "sld.bu", "divhn", "divhun", "divn",
        "divun", "pushml" code from here to v850.igen.
        (divun): Make global.
        (type3_regs): Make global
        
        * v850.igen: Move simops.c code to here.

        * interp.c (sim_create_inferior): For v850eq set US bit by
        default.

end-sanitize-v850eq
start-sanitize-v850e
        * interp.c (sim_open): Don't set arch, now set by
        sim_analyze_program.

end-sanitize-v850e
        * configure: Regenerated to track ../common/aclocal.m4 changes.

Mon Sep 15 14:39:34 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * simops.c (op_types): Move from here.
        sim-main.h: To here.

        * sim-main.h (trace_input, trace_output), simops.c: Make global.

        * simops.c (OP_60): Move "jmp" code from here.
        * v850.igen (jmp): To here.

start-sanitize-v850eq
        * simops.c (OP_60): Move "sld.bu" code from here.
        * v850.igen (sld.bu): To here.

end-sanitize-v850eq
Fri Sep 12 15:11:03 1997  Andrew Cagney  <cagney@b1.cygnus.com>

start-sanitize-v850eq
        * v850.igen (prepare, ...): Add to v850eq architecture.

end-sanitize-v850eq
start-sanitize-v850e
        * interp.c (sim_open): Default to v850eq.
        
end-sanitize-v850e
start-sanitize-v850eq
        
        * interp.c (sim_open): Default to v850e.
end-sanitize-v850eq
        * sim-main.h (signal.h): Include.

        * v850.igen (illegal): Report/halt illegal instructions.

        * Makefile.in (SIM_EXTRA_CFLAGS): Add SIM_RESERVED_BITS.

        * configure.in: Add reserved bits option.
        * configure: Regenerate.

Thu Sep 11 08:40:03 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_open): Use sim_do_commandf instead of asprintf.

        * sim-main.h (INSN_NAME): 

        * Makefile.in (INCLUDE): Add SIM_EXTRA_DEPS.
        (SIM_EXTRA_DEPS): Add itable.h
        (tmp-gencode): Does not depend on simops.h

        * sim-main.h (itable.h): Include.
        (MAX_INSNS, INSN_NAME): Define.

        * interp.c: Compute inttype from the interrupt_names index that
        was passed in.

Wed Sep 10 10:25:40 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * simops.c (trace_input): Use trace_printf instead of
        sim_io_printf.
        (trace_output): Ditto.
        (trace_input): Only trace when TRACE_ALU_P.  Delete code
        disasembling instruction.
        (trace_output): Only trace when TRACE_ALU_P.

Tue Sep  9 01:29:50 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * simops.c (trace_input, trace_output): Use sim_io_printf.
        (OP_620): Pass correct argument to trace.
        (OP_E607E0): Ditto.
        (trace_input): Obtain prog_bfd, text_start et.al from simulator
        struct.

Mon Sep  8 21:03:52 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * v850.igen: New file.
        * v850-dc: New file.

Mon Sep  8 18:33:04 1997  Andrew Cagney  <cagney@b1.cygnus.com>


        * sim-main.h (SEXT16): Delete, use EXTEND16.
        (SEXT8): Delete, use EXTEND8.
        (SEXT32): Delete, used?
        (SEXT40, SEXT44, SEXT64): Use UNSIGNED64 for constants, not ...LL.
        (WITH_TARGET_WORD_MSB): Define as 31. v850 little bit endian.
        
        * simops.c: Use EXTEND15 from sim-bits instead of SEXT16.

        * sim-main.h (DEBUG_TRACE, DEBUG_VALUES, v850_debug): Delete,
        replace with TRACE_INSN_P and TRACE_ALU_P.

        * simops.c (trace_input, trace_output): Update.

        * interp.c (sim_engine_run): Delete.
        (lookup_hash): Delete.
        (sim_open): Do not fill hash table.
        (sim_trace): Delete.

Fri Sep  5 17:04:48 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * simops.c (OP_FFFF): Use sim_engine_halt.
        (OP_12007E0): Ditto.
        (OP_10007E0): Ditto.

        * sim-main.h (struct sim_cpu): Delete member exception. Using
        sim-engine et.al.

        * interp.c (sim_info): Do not do anything in sim-info.
        (sim_stop): Delete, replace with sim-stop.
        (sim_stop_reason): Delete, replace with sim-reason.

        * sim-main.h (WITH_WATCHPOINTS): Define.
        (WITH_MODULO_MEMORY): Define
        
        * Makefile.in (SIM_OBJS): Add sim-resume, sim-watch, sim-stop,
        sim-reason.

        * interp.c (enum interrupt_cond_type): Delete.
        (struct interrupt_generator): Delete.
        (enum interrupt_type): Drop int_none.
        (sim_open): Initialize WATCHPOINT module.
        (sim_resume, sim_run): Rename sim_resume to sim_run.
        (sim_engine_run): Replace interrupt code with call to sim-events.
        (sim_set_interrupt): Delete.
        (sim_parse_number): Delete.

Thu Sep  4 17:21:23 1997  Doug Evans  <dje@seba>

        * configure: Regenerated to track ../common/aclocal.m4 changes.

Thu Sep  4 18:11:37 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * simops.c (fetch_argv): New function, fetch a arg vector from
        simulator memory.

        * configure.in: Check for fork, execve, execv.
        * configure: Regenerate.

        * interp.c (sim_store_register, sim_fetch_register): Use H2T_4 and
        T2H_4 for byte swapping.

        * sim-main.h, interp.c (get_word, get_half, get_byte, put_word,
        put_half, put_byte): Delete.

        * Makefile.in (SIM_OBJS): Add sim-memopt.o module.

        * sim-main.h (load_mem, store_mem): Redefine as macros.
        (IMEM, IMEM_IMMED): New macros - fetch instructions.

        * simops.c (OP_10007E0): For SYS_read, SYS_write, SYS_open
        transfer data via a buffer.
        (fetch_str): New function, fetch string from memory.

        * Makefile.in (SIM_OBJS): Add sim-hrw.o module.

        * interp.c (sim_open): Establish memory maps using sim-memopt.c
        via sim_do_command.
        (sim_do_command): Print error if memory-map command is used. Call
        sim_args_command.
        (map): Delete, replaced by sim-core.
        (sim_memory_init): Delete, replaced by sim-core.
        (sim_set_memory_map): Delete, replaced by sim-memopt.
        (load_mem): Delete, replaced by sim-core.
        (store_mem): Delete, replaced by sim-core.
        (sim_write): Delete, replaced by sim-hrw.
        (sim_read): Delete, replaced by sim-hrw.

        * sim-main.h (struct sim_state): Remove memory members, using
        sim-core.c

Wed Sep  3 10:18:55 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h: Replace SIM_HAVE_FLATMEM with mem ptr.
        * interp.c (map): Do not add to a void pointer.
        
        * Makefile.in (INCLUDE): Add sim-main.h

        * configure.in: Check for time.h
        * configure: Re-generate.

        * interp.c (struct interrupt_generator): Make time unsigned long,
        address SIM_ADDR.
        (sim_resume): Make oldpc SIM_ADDR.
        (struct hash_entry): Make mask/opcode unsigned.

        * v850_sim.h (struct simops ): Make opcode and mask unsigned.

        * simops.c (utime.h): Include if available.
        (OP_10007E0): Check for UTIME function.
        (divun): Put parentheses around shift argument.
        (OP_640): Put parentheses around shift argument, was wrong.
        (OP_107F0): Return something.

        * interp.c (sim_parse_number): Use strtoul not strtol.
        (sim_resume): Use sim_elapsed_time_get to keep track of the time.

        * configure.in (SIM_AC_OPTION_WARNINGS): Add.
        (SIM_AC_OPTION_ENDIAN): Set to hardwired big.
        (SIM_AC_OPTION_HOST_ENDIAN): Add.
        (AC_CHECK_FUNCS): Add utime.
        (AC_CHECK_HEADERS): Add stdlib.h, string.h, strings.h, utime.h
        configure: Regenerate.
        

        * Makefile.in (SIM_RUN_OBJS): Use nrun.o.
        (SIM_OBJS): Add sim-io.o, sim-hload.o, sim-utils.o, sim-options.o,
        sim-config.o, sim-module.o, sim-events.o, sim-core.o,
        sim-endian.o, sim-engine.o, sim-trace.o, sim-profile.o
        (SIM_ENDIAN, SIM_WARNGINS): Define.

        * simops.c (OP_10007E0): Use sim_io_* for transfers.

        * interp.c (sim_resume): Pass sd around.

        * simops.c (sim-main.h): Include.

        * gencode.c (write_template): Generate #include sim-main.h.
        (write_opcodes): Ditto.
        
        * interp.c (prog_bfd, prog_bfd_was_opened_p): Delete.
        (v850_callback): Ditto.
        (sim_kind, myname): Ditto.
        (lookup_hash): Pass SD. Use sim_io_error.
        (sim_set_memory_map): Pass in SD, use.
        (init_system): Pass in SD, use.
        (sim_open): Update.
        (sim_set_profile): Delete.
        (sim_set_profile_size): Delete.
        (do_interrupt): Pass in SD, use.
        (sim_info): Use sim_io_printf.
        (sim_create_inferior): Reset registers.  Set PC from prog_bfd
        argument.
        (sim_load): Delete, use common/sim-hload.c
        (sim_size): Rename to sim_memory_init.
        (sim_write): Remove call to init_system.
        (init_system): Delete.
        (sim_set_callbacks): Delete.
        (sim_set_interrupt): Pass in SD, use.
        (start_time): Delete.
        
        * v850_sim.h: Remove everything except `struct simops' from here.
        * sim-main.h: Move most to here.
        * gencode.c: Move #includes to here.

        * sim-main.h(struct _sim_cpu): Rename struct _state.
        (#define PC, et.al.): Update
        (v850_callback): Delete.  Replaced with SIM_DESC arg.
        (int8, uint8, int16, uint16, int32, uint32): Define types using
        unsigned8 et.al from common/sim-types.h.
        * sim-main.h (State): Define as STATE_CPU.

Mon Sep  1 12:07:55 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * configure.in: Check for time, chmod.
        * configure: Regenerate.
        * simops.c (SYS_time, SYS_chmod): Use HAVE_TIME, HAVE_CHMOD.
        
        * simops.c (../../libgloss/v850/sys/syscall.h): Include instead of
        sys/syscall.h.
        (OP_10007E0): Check the existance each SYS_* macro independantly.

        * v850_sim.h (SIGQUIT, SIGTRAP): Only define if missing.

Wed Aug 27 18:13:22 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * configure: Regenerated to track ../common/aclocal.m4 changes.
        * config.in: Ditto.

Tue Aug 26 10:42:38 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_kill): Delete.
        (sim_create_inferior): Add ABFD argument.
        (sim_load): Move setting of PC from here.
        (sim_create_inferior): To here.

Mon Aug 25 17:50:22 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * configure: Regenerated to track ../common/aclocal.m4 changes.
        * config.in: Ditto.

Mon Aug 25 11:31:23 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_open): Add ABFD argument.

start-sanitize-v850e
Fri Aug 22 10:39:28 1997  Nick Clifton  <nickc@cygnus.com>

        * simops.c (bsh): Only set CY flag if either of the bottom
        bytes is zero.
        
        * simops.c (prepare, dispose): Lower numbered
        registers go to higher numbered address.

        * simops.c (unsigned divide instructions): S bit set if result has
        top bit set.
        
start-sanitize-v850eq
        * simops.c (pushml, pushmh, popml, popmh): Lower numbered
        registers go to higher numbered address.
end-sanitize-v850eq
end-sanitize-v850e
        
Wed Aug 20 13:56:35 1997  Nick Clifton  <nickc@cygnus.com>

        * simops.c (OP_107E0, OP_107F0, OP_307E0, OP_307F0): Use correct
        interpretation of SR bit in list18 structure.
start-sanitize-v850eq
        (divn, divun): New functions to perform N step divide functions.
end-sanitize-v850eq

start-sanitize-v850eq
Mon Aug 18 10:59:02 1997  Nick Clifton  <nickc@cygnus.com>

        * simops.c (OP_300, OP_400, OP_60, OP_70): Support variant opcodes
        with US bit set in the PSW.
start-sanitize-v850eq

Wed Aug 13 19:06:55 1997  Nick Clifton  <nickc@cygnus.com>

        * interp.c (sim_resume): Opcode functions return amount to be
        added to PC and all opcodes take a standard format in the OP[]
        array.
        
        (do_format_*): Functions removed.

        * v850_sim.h (SP, EP): New register mnemonics.
        
        * gencode.c (write_header): Functions prototypes return an
        integer.

        * simops.c: Opcode functions return amount to be added to PC.
        
start-sanitize-v850e
        * v850_sim.h (CTPC, CTPSW, CTBP): New register mnemonics.
        
        * simops.c: Add support for v850e instructions.
        
        * .Sanitize (Do-first, Do-last): Add support for keep-v850e
        command line option.

end-sanitize-v850e

start-sanitize-v850eq
        * .Sanitize (Do-first, Do-last): Add support for keep-v850eq
        command line option.

        * simops.c: Add support for v850eq instructions.
end-sanitize-v850eq
        
Tue May 20 10:24:14 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_open): Add callback argument.
        (sim_set_callbacks): Delete SIM_DESC argument.

Thu Apr 24 00:39:51 1997  Doug Evans  <dje@canuck.cygnus.com>

        * configure: Regenerated to track ../common/aclocal.m4 changes.

Wed Apr 23 17:20:16 1997  Doug Evans  <dje@canuck.cygnus.com>

        * interp.c (prog_bfd_was_opened_p): New static local.
        (prog_bfd): New global variable.
        (sim_open): Undo patch to add -E support.
        (sim_close): Close prog_bfd if sim_load opened it.
        (sim_load): Record bfd of loaded file in prog_bfd.
        * simops.c (prog_bfd): Renamed from exec_bfd.

Fri Apr 18 14:17:12 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_stop): Stub function.

Thu Apr 17 03:53:18 1997  Doug Evans  <dje@canuck.cygnus.com>

        * Makefile.in (SIM_OBJS): Add sim-load.o.
        * interp.c (sim_kind, myname): New static locals.
        (sim_open): Set sim_kind, myname.  Ignore -E arg.
        (sim_load): Return SIM_RC.  New arg abfd.  Call sim_load_file to
        load file into simulator.  Set start address from bfd.
        (sim_create_inferior): Return SIM_RC.  Delete arg start_address.

Wed Apr 16 19:53:55 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * simops.c (OP_10007E0): Only provide system calls SYS_execv,
        SYS_wait, SYS_wait, SYS_utime, SYS_time if defined by the host.

Mon Apr  7 15:45:02 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>

        * configure: Regenerated to track ../common/aclocal.m4 changes.
        * config.in: Ditto.

Wed Apr  2 15:06:28 1997  Doug Evans  <dje@canuck.cygnus.com>

        * interp.c (sim_open): New arg `kind'.

        * configure: Regenerated to track ../common/aclocal.m4 changes.

Wed Apr  2 14:34:19 1997 Andrew Cagney <cagney@kremvax.cygnus.com>

        * configure: Regenerated to track ../common/aclocal.m4 changes.

Wed Mar 19 01:14:00 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>

        * configure: Regenerated to track ../common/aclocal.m4 changes.

Mon Mar 17 15:10:07 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>

        * configure: Re-generate.

Fri Mar 14 10:34:11 1997  Michael Meissner  <meissner@cygnus.com>

        * configure: Regenerate to track ../common/aclocal.m4 changes.

Thu Mar 13 13:00:54 1997  Doug Evans  <dje@canuck.cygnus.com>

        * interp.c (sim_open): New SIM_DESC result.  Argument is now
        in argv form.
        (other sim_*): New SIM_DESC argument.

Tue Feb  4 13:33:30 1997  Doug Evans  <dje@canuck.cygnus.com>

        * Makefile.in (@COMMON_MAKEFILE_FRAG): Use
        COMMON_{PRE,POST}_CONFIG_FRAG instead.
        * configure.in: sinclude ../common/aclocal.m4.
        * configure: Regenerated.

Thu Jan 23 11:46:23 1997  Stu Grossman  (grossman@critters.cygnus.com)

        * configure configure.in Makefile.in:  Update to new configure
        scheme which is more compatible with WinGDB builds.
        * configure.in:  Improve comment on how to run autoconf.
        * configure:  Re-run autoconf to get new ../common/aclocal.m4.
        * Makefile.in:  Use autoconf substitution to install common
        makefile fragment.

Mon Jan 20 16:05:34 1997  Michael Meissner  <meissner@tiktok.cygnus.com>

        * simops.c (OP_{E0,2E0,6E0}): The multiply operations sign extend,
        not zero extend.

Tue Jan 14 17:06:03 1997  Stu Grossman  (grossman@critters.cygnus.com)

        * simops.c:  Put ifdefs around things to make MSVC happy.  Get rid
        of unistd.h.  Disable SYS_stat, SYS_chown, SYS_time, SYS_times,
        SYS_gettimeofday and SYS_utime from MSVC.

Tue Dec 31 18:11:13 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * simops.c (OP_10007E0): Know that kill encodes the signal number
        via: 0xdead0000 | signal and turn it back into a signal.

Fri Dec 27 14:44:06 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * v850_sim.h (SIG_V850_EXIT): Define as -1.

        * interp.c (sim_open): Cast calloc function.
        (sim_stop_reason): If signal is SIG_V850_EXIT, inform gdb the
        program exited with the appropriate exit code.
        (sim_set_interrupt): Declare buildargv.

        * simops.c (OP_10007E0): Make exit signal normal exit.  Make time
        type correct and work on big endian systems.

Wed Nov 20 02:18:44 1996  Doug Evans  <dje@canuck.cygnus.com>

        * Makefile.in: Delete stuff moved to ../common/Make-common.in.
        (SIM_OBJS,SIM_EXTRA_CFLAGS,SIM_EXTRA_CLEAN): Define.
        * configure.in: Simplify using macros in ../common/aclocal.m4.
        Call AC_CHECK_HEADERS(unistd.h).
        * configure: Regenerated.
        * config.in: New file.
        * simops.c: #include "config.h".  #include <unistd.h> if present.

Sun Nov  3 23:02:54 1996  Stan Shebs  <shebs@andros.cygnus.com>

        * v850_sim.h (State): New slots dummy_mem, pending_nmi.
        (EIPC, etc): New macros for system registers.
        * simops.c, interp.c: Use everywhere.

        * interp.c: Add support for interrupts issued by interrupt
        generators, either PC- or time-based.  Controlled by simulator
        command "sim interrupt".

        * interp.c: Add support for variable-size allocation of memory,
        via simulator command "sim memory-map".
        (map): Issue SIGSEGV for references to invalid memory regions.
        
Thu Oct 31 14:44:10 1996  Gavin Koch  <gavin@cygnus.com>
        
        * simops.c: Include <sys/time.h> for struct timeval and 
        struct timezone.
        
Wed Oct 30 08:49:10 1996  Jeffrey A Law  (law@cygnus.com)

        * simops.c (OP_10007E0): Handle SYS_times and SYS_gettimeofday.

        * simops.c (OP_10007E0): Handle SYS_time.

Tue Oct 29 14:22:55 1996  Jeffrey A Law  (law@cygnus.com)

        * simops.c: Include <sys/stat.h>.
        (OP_10007E0): Handle SYS_stat.

Thu Oct 24 12:26:35 1996  Jeffrey A Law  (law@cygnus.com)

        * simops.c (OP_10007E0): Don't declare errno.

        * simops.c (OP_500): Mask off low bit in displacement
        for sld.w.
        (OP_501): Similarly.

        * simops.c (OP_500): Fix displacement handling for sld.w.
        (OP_501): Similarly for sst.w.

        * simops.c (trace_input): Remove all references to SEXT7.
        (OP_300, OP_400, OP_500, OP_380, OP_480, OP_501): Displacement
        is zero extended for sst/sld instructions.
        * v850_sim.h (SEX7): Delete.  It's no longer needed (and it
        was incorrect anyway).

Thu Oct 24 10:33:33 1996  Stu Grossman  (grossman@critters.cygnus.com)

        * Makefile.in:  Get rid of srcroot.  Set all INSTALL macros via
        autoconf.
        * gencode.c (write_opcodes):  Pad operands field to account for
        MSVC braindamage.
        * simops.c:  Include errno.h.  Exclude SYS_chown, since MSVC
        doesn't support it.  (Why is this here in the first place?!?)
        * v850_sim.h:  Get rid of 64 bit defs.  Also, get rid of #elif's.
        Change number of operands in struct simops from 9 to 6.  Define
        SIGTRAP and SIGQUIT for MSVC.

Tue Oct 15 16:19:51 1996  Stu Grossman  (grossman@critters.cygnus.com)

        * interp.c (MEM_SIZE):  It's now bytes, not a power of 2.
        * (map):  Add support for external mem in the 1->2 meg range.
        Also, abort() when memory access is way out of bounds.  (Better to
        die than to give wrong result.  (This will be fixed later.))
        * (sim_size):  MEM_SIZE is now bytes, not shift factor.

Tue Oct  1 15:53:24 1996  Gavin Koch <gavin@cygnus.com>
        
        * simops.c (trace_input): Swapped order of operands for output
        output of OP_IMM_REG.  Changed the fetching of the operands for
        OP_LOAD32, and OP_STORE32 to work like op-function.
        
Mon Sep 30 15:46:33 1996  Stu Grossman  (grossman@critters.cygnus.com)

        * interp.c:  Move includes of remote-sim.h and callback.h to
        v850-sim.h.
        * (lookup_hash): Add PC to report of hash failure.
        * (map load_mem store_mem):  New memory subsystem.  Models V851
        memory system.
        * (sim_write sim_read):  Use new memory subsystem.
        * (sim_resume):  Don't load and save PC into EIPC anymore.  Needed
        to make user-defined traps work right.
        * simops.c (OP_*):  Use new memory subsystem.
        * (OP_14007E0 (reti)):  Implement reti.
        * (OP_14996E0 (trap)):  Implement user-defined traps.  Move I/O to
        trap 31.  Use new memory subsystem.
        * v850_sim.h:  Prototypes for load_mem, store_mem and map.  Use
        load_mem in RLW macro.

Fri Sep 27 18:34:09 1996  Stu Grossman  (grossman@critters.cygnus.com)

        * gencode.c (write_opcodes):  Output hex values for opcode mask
        and patterns.
        * interp.c (sim_resume):  Save and restore PC from the appropriate
        register.
        * (sim_fetch_register sim_store_register):  Fix byte-order problem
        with reading and writing registers.
        * simops.c (OP_FFFF):  Implement pseudo-breakpoint insn.

Fri Sep 27 17:42:37 1996  Jeffrey A Law  (law@cygnus.com)

        * simops.c (trace_input): Fix thinko. 

Wed Sep 18 09:54:12 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * simops.c (exec_bfd): Rename from sim_bfd.
        (trace_input): Ditto.

Thu Sep 12 12:03:05 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * simops.c (trace_input): Use find_nearest_line to print line
        number, function name or file name of PC.

Wed Sep 11 16:44:37 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * simops.c: Add tracing support.  Use SEXTxx macros instead of
        doing hardwired shifts.

        * configure.in (--enable-sim-cflags): Add switch to add additional
        flags to simulator buld.  If --enable-sim-cflags=trace, turn on
        tracing.
        * configure: Regenerate.

        * Makefile.in: Don't require a VPATH capable make if configuring
        in the same directory.  Don't use CFLAGS for configuration flags.
        Add flags from --enable-sim-cflags.  Support canadian cross
        builds.  Rebuild whole simulator if include files change.

        * interp.c (v850_debug): New global for debugging.
        (lookup_hash,sim_size,sim_set_profile): Use
        printf_filtered callback, instead of calling printf directly.
        (sim_{open,trace}): Enable tracing if -t and compiled for tracing.

        * v850_sim.h: Use limits.h to set the various sized types.
        (SEXT{5,7,16,22}): New macros.

Mon Sep  9 20:50:46 1996  Jeffrey A Law  (law@cygnus.com)

        * interp.c (hash): Make this an inline function
        when compiling with GCC.  Simplify.
        * simpos.c: Explicitly include "sys/syscall.h".  Remove
        some #if 0'd code.  Enable more emulated syscalls.

Wed Sep  4 01:48:55 1996  Jeffrey A Law  (law@cygnus.com)

        * interp.c: Fix sign bit handling for add and sub instructions.

Tue Sep  3 10:20:30 1996  Jeffrey A Law  (law@cygnus.com)

        * gencode.c: Fix various indention & style problems.
        Remove test code.  Remove #if 0 code.
        * interp.c: Provide prototypes for all static functions.
        Fix minor indention problems.
        (sim_open, sim_resume): Remove unused variables.
        (sim_read): Return type is "int".
        * simops.c: Remove unused variables.
        (divh): Make result of divide-by-zero zero.
        (setf): Initialize result to keep compiler quiet.
        (sar instructions): These just clear the overflow bit.
        * v850_sim.h: Provide prototypes for put_byte, put_half
        and put_word.

        * interp.c: OP should be an array of 32bit operands!
        (v850_callback): Declare.
        (do_format_5): Fix extraction of OP[0].
        (sim_size): Remove debugging printf.
        (sim_set_callbacks): Do something useful.
        (sim_stop_reason): Gross hacks to get c-torture running.
        * simops.c: Simplify code for computing targets of bCC
        insns.   Invert 's' bit if 'ov' bit is set for some
        instructions.  Fix 'cy' bit handling for numerous
        instructions.  Make the simulator stop when a halt
        instruction is encountered.  Very crude support for
        emulated syscalls (trap 0).
        * v850_sim.h: Include "callback.h" and declare
        v850_callback.  Items in the operand array are 32bits.

Sun Sep  1 22:35:35 1996  Jeffrey A Law  (law@cygnus.com)

        * interp.c (sim_resume): Fix code to check for a format 3
        opcode.
        * simops.c: bCC insns only argument is a constant, not a
        register value (duh...)

Fri Aug 30 10:33:49 1996  Jeffrey A Law  (law@cygnus.com)

        * simops.c: Fix "not1" and "set1".

        * simops.c: Don't forget to initialize temp for
        "ld.h" and "ld.w"

        * interp.c: Remove various debugging printfs.

        * simops.c: Fix satadd, satsub boundary case handling.

        * interp.c (hash): Fix.
        * interp.c (do_format_8): Get operands correctly and
        call the target function.
        * simops.c: Rough cut at "clr1", "not1", "set1", and "tst1".

Thu Aug 29 13:53:29 1996  Jeffrey A Law  (law@cygnus.com)

        * interp.c (do_format_4): Get operands correctly and
        call the target function.
        * simops.c: Rough cut at "sld.b", "sld.h", "sld.w", "sst.b",
        "sst.h", and "sst.w".

        * v850_sim.h: The V850 doesn't have split I&D spaces.  Change
        accordingly.  Remove many unused definitions.
        * interp.c: The V850 doesn't have split I&D spaces.  Change
        accordingly.
        (get_longlong, get_longword, get_word): Deleted.
        (write_longlong, write_longword, write_word): Deleted.
        (get_operands): Deleted.
        (get_byte, get_half, get_word): New functions.
        (put_byte, put_half, put_word): New functions.
        * simops.c: Remove unused functions.  Rough cut at
        "ld.b", "ld.h", "ld.w", "st.b", "st.h", "st.w" insns.

        * v850_sim.h (struct _state): Remove "psw" field.  Add
        "sregs" field.
        (PSW): Remove bogus definition.
        * simops.c: Change condition code handling to use the psw
        register within the sregs array.  Handle "ldsr" and "stsr".

        * simops.c: Handle "satadd", "satsub", "satsubi", "satsubr".

        * interp.c (do_format_5): Get operands correctly and
        call the target function.
        (sim_resume): Don't do a PC update for format 5 instructions.
        * simops.c: Handle "jarl" and "jmp" instructions.

        * simops.c: Fix minor typos.  Handle "cmp", "setf", "tst"
        "di", and "ei" instructions correctly.

        * interp.c (do_format_3): Get operands correctly and call
        the target function.
        * simops.c: Handle bCC instructions.

        * simops.c: Add condition code handling to shift insns.
        Fix minor typos in condition code handling for other insns.

        * Makefile.in: Fix typo.
        * simops.c: Add condition code handling to "sub" "subr" and
        "divh" instructions.

        * interp.c (hash): Update to be more accurate.
        (lookup_hash): Call hash rather than computing the hash
        code here.
        (do_format_1_2): Handle format 1 and format 2 instructions.
        Get operands correctly and call the target function.
        (do_format_6): Get operands correctly and call the target
        function.
        (do_formats_9_10): Rough cut so shift ops will work.
        (sim_resume): Tweak to deal with format 1 and format 2
        handling in a single funtion.  Don't update the PC
        for format 3 insns.  Fix typos.
        * simops.c: Slightly reorganize.  Add condition code handling
        to "add", "addi", "and", "andi", "or", "ori", "xor", "xori"
        and "not" instructions.
        * v850_sim.h (reg_t): Registers are 32bits.
        (_state): The V850 has 32 general registers.  Add a 32bit
        psw and pc register too.  Add accessor macros

        * Makefile.in, interp.c, v850_sim.h: Bring over endianness
        changes from the d10v simulator.

        * simops.c: Add shift support.

        * simops.c: Add multiply & divide support.  Abort for system
        instructions.

        * simops.c: Add logicals, mov, movhi, movea, add, addi, sub
        and subr.  No condition codes yet.

Wed Aug 28 13:53:22 1996  Jeffrey A Law  (law@cygnus.com)

        * ChangeLog, Makefile.in, configure, configure.in, v850_sim.h, 
        gencode.c, interp.c, simops.c: Created.