[external/binutils.git] / sim / mips / ChangeLog

Fri Oct  9 18:02:25 1998  Doug Evans  <devans@canuck.cygnus.com>

        * interp.c: #include "itable.h" if WITH_IGEN.
        (get_insn_name): New function.
        (sim_open): Initialize CPU_INSN_NAME,CPU_MAX_INSNS.
        * sim-main.h (MAX_INSNS,INSN_NAME): Delete.

start-sanitize-sky
Tue Sep 22 10:35:37 1998  Frank Ch. Eigler  <fche@cygnus.com>
 
        * sim-main.c (tlb_try_match): Specially match virtual
        pages mapped to scratchpad RAM, an unimplemented feature.

end-sanitize-sky
start-sanitize-r5900
Fri Sep 18 11:31:16 1998  Frank Ch. Eigler <fche@cygnus.com>

        * r5900.igen (prot3w): Correct rotation sequence; patch
        from customer.

end-sanitize-r5900
Mon Sep 14 12:36:44 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * configure: Rebuilt to inhale new common/aclocal.m4.

start-sanitize-r5900
Thu Sep 10 11:50:54 1998  Doug Evans  <devans@canuck.cygnus.com>

        * r5900.igen (plzcw): Make `i' signed.

Wed Sep  9 15:02:10 1998  Doug Evans  <devans@canuck.cygnus.com>
  
        * sim-main.h (COP0_COUNT,COP0_COMPARE,status_IM7): New macros.
        * sky-engine.c (cpu_issue): Increment COP0_COUNT and signal an
        interrupt if == COP0_COMPARE and interrupt masks/enables allow it.
        * interp.c (signal_exception, sky version): Handle INT 2.

Wed Sep 9 11:28:20 1998  Ron Unrau <runrau@cygnus.com>

        * sim-main.h: track COP0 registers
        * interp.c (sim_{fetch,store}_register): read/write COP0 registers

Fri Sep  4 10:37:57 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * r5900.igen (mtsab): Correct typo in input register.

        * sim-main.h (TMP_*): New macros for accessing local 128-bit
        temporary for multimedia instructions.
        * r5900.igen (*): Convert most instructions to use new TMP
        macros to store output result during computation.

end-sanitize-r5900
start-sanitize-tx3904
Tue Sep  1 15:39:18 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * dv-tx3904sio.c: Include sim-assert.h.

Tue Aug 25 12:49:46 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * dv-tx3904sio.c: New file: tx3904 serial I/O module.
        * configure.in: Add dv-tx3904sio, dv-sockser for tx39 target.
        Reorganize target-specific sim-hardware checks.
        * configure: rebuilt.
        * interp.c (sim_open): For tx39 target boards, set
        OPERATING_ENVIRONMENT, add tx3904sio devices.
        * tconfig.in: For tx39 target, set SIM_HANDLES_LMA for loading
        ROM executables.  Install dv-sockser into sim-modules list.
        
        * dv-tx3904irc.c: Compiler warning clean-up.
        * dv-tx3904tmr.c: Compiler warning clean-up.  Remove particularly
        frequent hw-trace messages.

end-sanitize-tx3904
start-sanitize-sky      
Tue Aug 11 13:52:16 1998  Frank Ch. Eigler  <fche@cygnus.com>
 
        * interp.c (signal_exception): Set IP3 bit in CAUSE on
        sky interrupt.

end-sanitize-sky        
Fri Jul 31 18:14:16 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * vr.igen (MulAcc): Identify as a vr4100 specific function.

Sat Jul 25 16:03:14 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * Makefile.in (IGEN_INCLUDE): Add vr.igen.

        * vr.igen: New file.
        (MAC/MADD16, DMAC/DMADD16): Implement using code from gencode.c.
        * mips.igen: Define vr4100 model. Include vr.igen.
start-sanitize-cygnus
        * vr5400.igen: Move instructions to vr.igen
        * Makefile.in (IGEN_INCLUDE): Remove vr5400.igen.
end-sanitize-cygnus
start-sanitize-vr4320
        * vr4320.igen: Move instructions to vr.igen.
        * Makefile.in (IGEN_INCLUDE): Remove vr5320.igen.
        
end-sanitize-vr4320
start-sanitize-sky              
Fri Jul 24 16:01:03 1998  Ian Carmichael  <iancarm@cygnus.com>

        * interp.c (MONITOR_SIZE): Make 1MB monitor for SKY.
        * mips.igen (BREAK): Fix 0xffff2 monitor call.  Slightly less
        confusing message if not enough --load-next options appear.
 
        * sky-pke.h (VUx_MEMx_SRCADDR_START): Move to 0x19800000 range.
        * sim-main.c (GDB_COMM_AREA): Move to 0x19810000.
        * sky-gdb.c (init_fifo_bp_cache): Use VIO_BASE when reading GDB area.
        (resume_handler): Same.
        (suspend_handler): Same.
        
Wed Jul 22 13:04:13 1998  Frank Ch. Eigler  <fche@cygnus.com>
 
        * mips.igen (break): Implement LOAD_INSTRUCTION ("break 0xffff1")
        to trigger multi-phase load.

        * sim-main.c: Include sim-assert.h for ASSERT macro.
        * sim-main.h (PRINTF_INSTRUCTION): Correct bit pattern for
        "break 0xffff2".

Tue Jul 21 18:37:36 1998  Ian Carmichael  <iancarm@cygnus.com>
  
        MMU support.
        * interp.c (sim_open): Initialize TLB.
        * interp.c (signal_exceptions): New 5900 handling.
        * r5900.igen (TLBWR, TLBWI, TLBR, TLBP): Make these work.
        * sim-main.c (tlb_try_match, tlb_lookup): New functions.
        (address_translation): Use the TLB.
        * sim-main.h (r4000_tlb_entry_t): New type.
        (TLB_*): New constants.
        (COP0_*): New register names.
  
        Sky character I/O device.
        * sky-psio.c: New file.
        * sky-psio.h: New file.
        * Makefile.in: Add sky-psio.o.
        
end-sanitize-sky        
start-sanitize-r5900
Tue Jul 14 16:10:45 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * r5900.igen (r59fp_overflow): Replace argument ANS with argument
        SIGN_P.
        (r59fp_zero): Ditto.
        (r59fp_store): Update calls.
        (DIV.S): Compute 0/0 sign from inputs. Ditto for X/0.

end-sanitize-r5900
start-sanitize-branchbug4011
Mon Jun 29 09:31:27 1998  Gavin Koch  <gavin@cygnus.com>

        * interp.c (OPTION_BRANCH_BUG_4011): Add.
        (mips_option_handler): Handle OPTION_BRANCH_BUG_4011.
        (mips_options): Define the option.
        * mips.igen (check_4011_branch_bug): New.
        (mark_4011_branch_bug): New.
        (all branch insn): Call mark_branch_bug, and check_branch_bug.
        * sim-main.h (branchbug4011_option, branchbug4011_last_target, 
        branchbug4011_last_cia, BRANCHBUG4011_OPTION, 
        BRANCHBUG4011_LAST_TARGET, BRANCHBUG4011_LAST_CIA,
        check_branch_bug, mark_branch_bug): Define.

end-sanitize-branchbug4011
Mon Jun 29 09:21:07 1998  Gavin Koch  <gavin@cygnus.com>

        * mips.igen (check_mf_hilo): Correct check.

start-sanitize-r5900
Fri Jun 19 14:44:46 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (NR_COP0_GPR, COP0_GPR, cop0_gpr, NR_COP0_BP,
        COP0_BP, cop0_bp, NR_COP0_P, COP0_P, cop0_p): Add 32 COP0 general
        purpose registers, add 8 COP0 break-point registers, add 64 COP0
        performance registers.

        * interp.c (decode_coproc): Accept any MTC0/MFC0, MTBP/MFBP, MTP*
        MFP* instructions.  Just transfer value to/from corresponding
        register.

        * r5900.igen (BC0F, BC0FL, BC0T, BC0TL): Implement, assume COP0
        status is always true.
        (CACHE, TLBP, TPGWI, TLBWR): Treat as NOP.
        (EI, DI): Set/clear Status-EIE bit.
        
end-sanitize-r5900
start-sanitize-sky
Fri Jun 19 14:44:46 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * mips.igen (BC0F, BC0FL, BC0T, BC0TL): Move to sky code to
        r5900.igen.
        
end-sanitize-sky
Wed Jun 17 12:20:49 1998  Andrew Cagney  <cagney@b1.cygnus.com>

start-sanitize-sky
        * sky-vu.c (vu0_read_cop2_register, vu0_write_cop2_register): Call
        ASSERT not assert.
        * sky-gdb.c: Include "sim-assert.h".

end-sanitize-sky
        * sim-main.h (interrupt_event): Add prototype.

start-sanitize-tx3904
        * dv-tx3904tmr.c (tx3904tmr_io_write_buffer): Delete unused
        register_ptr, register_value.
        (deliver_tx3904tmr_tick): Fix types passed to printf fmt.

end-sanitize-tx3904
        * sim-main.h (tracefh): Make extern.

start-sanitize-tx3904
Tue Jun 16 14:39:00 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * dv-tx3904tmr.c: Deschedule timer event after dispatching.
        Reduce unnecessarily high timer event frequency.  
        * dv-tx3904cpu.c: Ditto for interrupt event.
        
end-sanitize-tx3904
start-sanitize-sky
Tue Jun 16 14:12:09 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * interp.c (decode_coproc): Removed COP2 branches.
        * r5900.igen: Moved COP2 branch instructions here.
        * mips.igen: Restricted COPz == COP2 bit pattern to
        exclude COP2 branches.

end-sanitize-sky
Wed Jun 10 13:22:32 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * interp.c (decode_coproc): For TX39, add stub COP0 register #7,
        to allay warnings.
        (interrupt_event): Made non-static.
start-sanitize-tx3904
        
        * dv-tx3904tmr.c (deliver_tx3904tmr_tick): Correct accidental
        interchange of configuration values for external vs. internal
        clock dividers.
end-sanitize-tx3904
        
Tue Jun  9 12:46:24 1998  Ian Carmichael  <iancarm@cygnus.com>

        * mips.igen (BREAK): Moved code to here for 
        simulator-reserved break instructions.
        * gencode.c (build_instruction): Ditto.
        * interp.c (signal_exception): Code moved from here.  Non-
        reserved instructions now use exception vector, rather 
        than halting sim.
        * sim-main.h: Moved magic constants to here.

start-sanitize-tx3904
Tue Jun  9 12:29:50 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * dv-tx3904cpu.c (deliver_*_interrupt,*_port_event): Set the CAUSE
        register upon non-zero interrupt event level, clear upon zero
        event value.
        * dv-tx3904irc.c (*_port_event): Handle deactivated interrupt signal
        by passing zero event value.
        (*_io_{read,write}_buffer): Endianness fixes.
        * dv-tx3904tmr.c (*_io_{read,write}_buffer): Endianness fixes.
        (deliver_*_tick): Reduce sim event interval to 75% of count interval.

        * interp.c (sim_open): Added jmr3904pal board type that adds PAL-based
        serial I/O and timer module at base address 0xFFFF0000.
        
end-sanitize-tx3904
Tue Jun  9 11:52:29 1998  Gavin Koch  <gavin@cygnus.com>

        * mips.igen (SWC1) : Correct the handling of ReverseEndian 
        and BigEndianCPU.

Tue Jun  9 11:40:57 1998  Gavin Koch  <gavin@cygnus.com>

        * configure.in (mips_fpu_bitsize) : Set this correctly for 32-bit mips
        parts.
        * configure: Update.

start-sanitize-tx3904
Thu Jun  4 15:37:33 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * dv-tx3904tmr.c: New file - implements tx3904 timer.
        * dv-tx3904{irc,cpu}.c: Mild reformatting.
        * configure.in: Include tx3904tmr in hw_device list.
        * configure: Rebuilt.
        * interp.c (sim_open): Instantiate three timer instances.
        Fix address typo of tx3904irc instance.

end-sanitize-tx3904
start-sanitize-r5900
Thu Jun  4 16:47:27 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * mips.igen (check_mt_hilo): 2.1 of r5900 spec stalls for HILO.
        Select corresponding check_mt_hilo function.
        (check_mult_hilo, check_div_hilo, check_mf_hilo, check_mt_hilo):
        Ditto.
        
        * r5900.igen (check_mult_hilo_hi1lo1, check_div_hilo_hi1lo1): Mark
        as r5900 specific.

end-sanitize-r5900
Tue Jun  2 15:48:02 1998  Ian Carmichael  <iancarm@cygnus.com>

        * interp.c (signal_exception): SystemCall exception now uses
        the exception vector.

Mon Jun  1 18:18:26 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * interp.c (decode_coproc): For TX39, add stub COP0 register #3,
        to allay warnings.

start-sanitize-r5900
Mon Jun  1 10:28:25 1998  Jeffrey A Law  (law@cygnus.com)

        * r5900.igen (rsqrt.s): Update based on r5900 ISA manual version 2.1.
        (sqrt.s): Likewise.

end-sanitize-r5900
Fri May 29 11:40:39 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * configure.in (sim_igen_filter): Match mips*tx39 not mipst*tx39.

start-sanitize-tx3904
Mon May 25 20:47:45 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * dv-tx3904cpu.c, dv-tx3904irc.c: Rename *_callback to *_method.

        * dv-tx3904cpu.c, dv-tx3904irc.c: Include hw-main.h and
        sim-main.h. Declare a struct hw_descriptor instead of struct
        hw_device_descriptor.

end-sanitize-tx3904
Mon May 25 12:41:38 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * mips.igen (do_store_left, do_load_left): Compute nr of left and
        right bits and then re-align left hand bytes to correct byte
        lanes.  Fix incorrect computation in do_store_left when loading
        bytes from second word.

start-sanitize-tx3904
Fri May 22 13:34:20 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * configure.in (SIM_AC_OPTION_HARDWARE): Only enable when tx3904.
        * interp.c (sim_open): Only create a device tree when HW is
        enabled.

        * dv-tx3904irc.c (tx3904irc_finish): Pacify GCC.
        * interp.c (signal_exception): Ditto.

end-sanitize-tx3904
Thu May 21 14:24:11 1998  Gavin Koch  <gavin@cygnus.com>

        * gencode.c: Mark BEGEZALL as LIKELY.

Thu May 21 18:57:19 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (ALU32_END): Sign extend 32 bit results.
        * mips.igen (ADD, SUB, ADDI, DADD, DSUB): Trace.
        
start-sanitize-r5900
Thu May 21 17:15:39 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_fetch_register): Convert internal r5900 regs to
        target byte order
        
end-sanitize-r5900
Mon May 18 18:22:42 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * configure.in (SIM_AC_OPTION_HARDWARE): Added common hardware
        modules.  Recognize TX39 target with "mips*tx39" pattern.
        * configure: Rebuilt.
        * sim-main.h (*): Added many macros defining bits in
        TX39 control registers.
        (SignalInterrupt): Send actual PC instead of NULL.
        (SignalNMIReset): New exception type.
        * interp.c (board): New variable for future use to identify
        a particular board being simulated.
        (mips_option_handler,mips_options): Added "--board" option.
        (interrupt_event): Send actual PC.
        (sim_open): Make memory layout conditional on board setting.
        (signal_exception): Initial implementation of hardware interrupt
        handling.  Accept another break instruction variant for simulator
        exit.
        (decode_coproc): Implement RFE instruction for TX39.
        (mips.igen): Decode RFE instruction as such.
start-sanitize-tx3904
        * configure.in (tx3904cpu,tx3904irc): Added devices for tx3904.
        * interp.c: Define "jmr3904" and "jmr3904debug" board types and
        bbegin to implement memory map.
        * dv-tx3904cpu.c: New file.
        * dv-tx3904irc.c: New file.
end-sanitize-tx3904

Wed May 13 14:40:11 1998  Gavin Koch  <gavin@cygnus.com>

        * mips.igen (check_mt_hilo): Create a separate r3900 version.

start-sanitize-r5900
Wed May 13 14:27:53 1998  Gavin Koch  <gavin@cygnus.com>

        * r5900.igen: Replace the calls and the definition of the
        function check_op_hilo_hi1lo1 with the pair 
        check_mult_hilo_hi1lo1 and check_mult_hilo_hi1lo1.

end-sanitize-r5900
Wed May 13 14:11:46 1998  Gavin Koch  <gavin@cygnus.com>

        * tx.igen (madd,maddu):  Replace calls to check_op_hilo
        with calls to check_div_hilo.

Wed May 13 09:59:27 1998  Gavin Koch  <gavin@cygnus.com>

        * mips/mips.igen (check_op_hilo,check_mult_hilo,check_div_hilo):
        Replace check_op_hilo with check_mult_hilo and check_div_hilo.
        Add special r3900 version of do_mult_hilo.  
        (do_dmultx,do_mult,do_multu): Replace calls to check_op_hilo
        with calls to check_mult_hilo.
        (do_ddiv,do_ddivu,do_div,do_divu): Replace calls to check_op_hilo
        with calls to check_div_hilo.

Tue May 12 15:22:11 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * configure.in (SUBTARGET_R3900): Define for mipstx39 target.
        Document a replacement.

Fri May  8 17:48:19 1998  Ian Carmichael  <iancarm@cygnus.com>

        * interp.c (sim_monitor): Make mon_printf work.

Wed May  6 19:42:19 1998  Doug Evans  <devans@canuck.cygnus.com>

        * sim-main.h (INSN_NAME): New arg `cpu'.

start-sanitize-sky
Thu Apr 30 18:51:26 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * sky-libvpe.c (FMAdd, FMSub): Replace r59fp_op3 call with
        r59fp_mula.

end-sanitize-sky
start-sanitize-r5900
Wed Apr 29 22:54:45 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (R5900_FP_MAX, R5900_FP_MIN): Define.
        * r5900.igen (r59fp_overflow): Use.

        * r5900.igen (r59fp_op3): Rename to
        (r59fp_mula): This, delete opm argument.
        (MADD.S, MADDA.S, MSUB.S, MSUBS.S): Update.
        (r59fp_mula): Overflowing product propogates through to result.
        (r59fp_mula): ACC to the MAX propogates to result.
        (r59fp_mula): Underflow during multiply only sets SU.

end-sanitize-r5900
Tue Apr 28 18:33:31 1998  Geoffrey Noer  <noer@cygnus.com>

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

Sun Apr 26 15:31:55 1998  Tom Tromey  <tromey@creche>

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

Sun Apr 26 15:20:01 1998  Tom Tromey  <tromey@cygnus.com>

        * acconfig.h: New file.
        * configure.in: Reverted change of Apr 24; use sinclude again.

Fri Apr 24 14:16:40 1998  Tom Tromey  <tromey@creche>

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

Fri Apr 24 11:19:20 1998  Tom Tromey  <tromey@cygnus.com>

        * configure.in: Don't call sinclude.

Fri Apr 24 11:35:01 1998  Andrew Cagney  <cagney@chook.cygnus.com>

        * mips.igen (do_store_left): Pass 0 not NULL to store_memory.

Tue Apr 21 11:59:50 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * mips.igen (ERET): Implement.

        * interp.c (decode_coproc): Return sign-extended EPC.

        * mips.igen (ANDI, LUI, MFC0): Add tracing code.

        * interp.c (signal_exception): Do not ignore Trap.
        (signal_exception): On TRAP, restart at exception address.
        (HALT_INSTRUCTION, HALT_INSTRUCTION_MASK): Define.
        (signal_exception): Update.
        (sim_open): Patch V_COMMON interrupt vector with an abort sequence
        so that TRAP instructions are caught.

Mon Apr 20 11:26:55 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (struct hilo_access, struct hilo_history): Define,
        contains HI/LO access history.
        (struct _sim_cpu): Make hiaccess and loaccess of type hilo_access.
        (HIACCESS, LOACCESS): Delete, replace with
        (HIHISTORY, LOHISTORY): New macros.
        (start-sanitize-r5900):
        (struct sim_5900_cpu): Make hi1access, lo1access of type
        hilo_access.
        (HI1ACCESS, LO1ACCESS): Delete, replace with
        (HI1HISTORY, LO1HISTORY): New macros.
        (end-sanitize-r5900):
        (CHECKHILO): Delete all, moved to mips.igen
        
        * gencode.c (build_instruction): Do not generate checks for
        correct HI/LO register usage.

        * interp.c (old_engine_run): Delete checks for correct HI/LO
        register usage.

        * mips.igen (check_mt_hilo, check_mf_hilo, check_op_hilo,
        check_mf_cycles): New functions.
        (do_mfhi, do_mflo, "mthi", "mtlo", do_ddiv, do_ddivu, do_div,
        do_divu, domultx, do_mult, do_multu): Use.

        * tx.igen ("madd", "maddu"): Use.
        (start-sanitize-r5900):
        
        r5900.igen: Update all HI/LO checks.
        ("mfhi1", "mflo1", "mthi1", "mthi1", "pmfhi", "pmflo", "pmfhl",
        "pmthi", "pmtlo", "mpthl"): Check MF/MT HI/LO.
        ("mult1", "div1", "divu1", "multu1", "madd1", "maddu1", "pdivbw",
        "pdivuw", "pdivw", "phmaddh", "phmsubh", "pmaddh", "madduw",
        "pmaddw", "pmsubh", "pmsubw", "pmulth", "pmultuw", "pmultw"):
        Check HI/LO op.
        (end-sanitize-r5900):
        
start-sanitize-sky
Mon Apr 20 18:39:47 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * interp.c (decode_coproc): Correct CMFC2/QMTC2
        GPR access.

        * r5900.igen (LQ,SQ): Use a pair of 64-bit accesses
        instead of a single 128-bit access.

end-sanitize-sky
start-sanitize-sky
Fri Apr 17 14:50:39 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * r5900.igen (COP_[LS]Q): Transfer COP2 quadwords.
        * interp.c (cop_[ls]q): Fixes corresponding to above.
        
end-sanitize-sky
start-sanitize-sky
Thu Apr 16 15:24:14 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * interp.c (decode_coproc): Adapt COP2 micro interlock to
        clarified specs.  Reset "M" bit; exit also on "E" bit.

end-sanitize-sky
start-sanitize-r5900
Thu Apr 16 10:40:29 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * r5900.igen (CFC1, CTC1): Implement R5900 specific version.
        * mips.igen (CFC1, CTC1): R5900 des not use generic version.

        * r5900.igen (r59fp_unpack): New function.
        (r59fp_op1, r59fp_op2, r59fp_op3, C.cond.S, CVT.S.W, DIV.S,
        RSQRT.S, SQRT.S): Use.
        (r59fp_zero): New function.
        (r59fp_overflow): Generate r5900 specific overflow value.
        (r59fp_store): Re-write, overflow to MAX_R5900_FP value, underflow
        to zero.
        (CVT.S.W, CVT.W.S): Exchange implementations.
        
        * sim-main.h (R5900_EXPMAX, R5900_EXPMIN, R5900_EXPBIAS): Defile.
        
end-sanitize-r5900
start-sanitize-tx19
Thu Apr 16 09:14:44 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * configure.in (tx19, sim_use_gen): Switch to igen.
        * configure: Re-build.
        
end-sanitize-tx19
start-sanitize-sky
Wed Apr 15 12:41:18 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * interp.c (decode_coproc): Make COP2 branch code compile after
        igen signature changes.
        
end-sanitize-sky
Wed Apr 15 18:31:54 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * mips.igen (DSRAV): Use function do_dsrav.
        (SRAV): Use new function do_srav.

        * m16.igen (BEQZ, BNEZ): Compare GPR[TRX] not GPR[RX].
        (B): Sign extend 11 bit immediate.
        (EXT-B*): Shift 16 bit immediate left by 1.
        (ADDIU*): Don't sign extend immediate value.

Wed Apr 15 10:32:15 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * m16run.c (sim_engine_run): Restore CIA after handling an event.

start-sanitize-tx19
        * mips.igen (mtc0): Valid tx19 instruction.

end-sanitize-tx19
        * sim-main.h (DELAY_SLOT, NULLIFY_NEXT_INSTRUCTION): For IGEN, use
        functions.

        * mips.igen (delayslot32, nullify_next_insn): New functions.
        (m16.igen): Always include.
        (do_*): Add more tracing.

        * m16.igen (delayslot16): Add NIA argument, could be called by a
        32 bit MIPS16 instruction.
        
        * interp.c (ifetch16): Move function from here.
        * sim-main.c (ifetch16): To here.
        
        * sim-main.c (ifetch16, ifetch32): Update to match current
        implementations of LH, LW.
        (signal_exception): Don't print out incorrect hex value of illegal
        instruction.

Wed Apr 15 00:17:25 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * m16run.c (sim_engine_run): Use IMEM16 and IMEM32 to fetch an
        instruction.

        * m16.igen: Implement MIPS16 instructions.
        
        * mips.igen (do_addiu, do_addu, do_and, do_daddiu, do_daddu,
        do_ddiv, do_ddivu, do_div, do_divu, do_dmultx, do_dmultu, do_srav,
        do_dsubu, do_mfhi, do_mflo, do_mult, do_multu, do_nor, do_or,
        do_sll, do_sllv, do_slt, do_slti, do_sltiu, do_sltu, do_sra,
        do_srl, do_srlv, do_subu, do_xor, do_xori): New functions.  Move
        bodies of corresponding code from 32 bit insn to these.  Also used
        by MIPS16 versions of functions.
        
        * sim-main.h (RAIDX, T8IDX, T8, SPIDX): Define.
        (IMEM16): Drop NR argument from macro.

start-sanitize-sky
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.

end-sanitize-sky
start-sanitize-sky
Thu Apr  9 16:38:23 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * r5900.igen (LQC,SQC): Adapted code to DOUBLEWORD accesses
        instead of QUADWORD.

        * sim-main.h: Removed attempt at allowing 128-bit access.

end-sanitize-sky
start-sanitize-sky
Wed Apr  8 18:12:13 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * 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.
        
end-sanitize-sky
start-sanitize-sky
Tue Apr  7 18:32:49 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * interp.c (decode_coproc): Do not apply superfluous E (end) flag
        to upper code of generated VU instruction.
        
end-sanitize-sky
start-sanitize-sky
Mon Apr  6 19:55:56 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * interp.c (cop_[ls]q): Replaced stub with proper COP2 code.

        * sim-main.h (LOADADDRMASK): Redefine to allow 128-bit accesses
        for TARGET_SKY.

        * r5900.igen (SQC2): Thinko.
        
end-sanitize-sky
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
Sat Apr  4 22:39:50 1998  Andrew Cagney  <cagney@b1.cygnus.com>

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

        * sim-main.h (address_translation, load_memory, store_memory,
        cache_op, sync_operation, prefetch, ifetch32, pending_tick): Mark
        as INLINE_SIM_MAIN.
        (pr_addr, pr_uword64): Declare.
        (sim-main.c): Include when H_REVEALS_MODULE_P.
        
        * interp.c (address_translation, load_memory, store_memory,
        cache_op, sync_operation, prefetch, ifetch32, pending_tick): Move
        from here.
        * sim-main.c: To here. Fix compilation problems.
        
        * configure.in: Enable inlining.
        * configure: Re-config.

Sat Apr  4 20:36:25 1998  Andrew Cagney  <cagney@b1.cygnus.com>

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

Fri Apr  3 04:32:35 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * mips.igen: Include tx.igen.
        * Makefile.in (IGEN_INCLUDE): Add tx.igen.
        * tx.igen: New file, contains MADD and MADDU.

        * interp.c (load_memory): When shifting bytes, use LOADDRMASK not
        the hardwired constant `7'.
        (store_memory): Ditto.
        (LOADDRMASK): Move definition to sim-main.h.

        mips.igen (MTC0): Enable for r3900.
        (ADDU): Add trace.

        mips.igen (do_load_byte): Delete.
        (do_load, do_store, do_load_left, do_load_write, do_store_left,
        do_store_right): New functions.
        (SW*, LW*, SD*, LD*, SH, LH, SB, LB): Use.

        configure.in: Let the tx39 use igen again.
        configure: Update.
        
Thu Apr  2 10:59:39 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_monitor): get_mem_info returns a 4 byte quantity,
        not an address sized quantity.  Return zero for cache sizes.

Wed Apr  1 23:47:53 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * mips.igen (r3900): r3900 does not support 64 bit integer
        operations.

start-sanitize-sky
Wed Apr 1 08:20:31 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * mips.igen (SQC2/LQC2): Make bodies sky-target-only also.
        
end-sanitize-sky
start-sanitize-sky
Mon Mar 30 18:41:43 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * interp.c (decode_coproc): Continuing COP2 work.
        (cop_[ls]q): Make sky-target-only.

        * sim-main.h (COP_[LS]Q): Make sky-target-only.
end-sanitize-sky
Mon Mar 30 14:46:05 1998  Gavin Koch  <gavin@cygnus.com>

        * configure.in (mipstx39*-*-*): Use gencode simulator rather
        than igen one.
        * configure : Rebuild.
        
start-sanitize-sky
Sun Mar 29 17:50:11       Frank Ch. Eigler  <fche@cygnus.com>

        * interp.c (decode_coproc): Added a missing TARGET_SKY check
        around COP2 implementation skeleton.

end-sanitize-sky
start-sanitize-sky
Fri Mar 27 16:19:29 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * 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.
        
        * 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.
end-sanitize-sky
Fri Mar 27 16:15:52 1998  Andrew Cagney  <cagney@b1.cygnus.com>

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

Fri Mar 27 15:01:50 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (mips_option_handler): Iterate over MAX_NR_PROCESSORS.

Wed Mar 25 16:44:27 1998  Ian Carmichael  <iancarm@cygnus.com>

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

Wed Mar 25 12:35:29 1998  Andrew Cagney  <cagney@b1.cygnus.com>

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

Wed Mar 25 10:05:46 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (Max, Min): Comment out functions. Not yet used.

start-sanitize-vr4320
Wed Mar 25 10:04:13 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * vr4320.igen (DCLZ): Pacify GCC, 64 bit arg, int format.

end-sanitize-vr4320
Wed Mar 18 12:38:12 1998  Andrew Cagney  <cagney@b1.cygnus.com>

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

Tue Mar 17 19:05:20 1998  Frank Ch. Eigler  <fche@cygnus.com>

        * 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.

Wed Mar 11 14:09:10 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_write, sim_read, load_memory, store_memory):
        Replace sim_core_*_map with read_map, write_map, exec_map resp.

start-sanitize-vr4320
Tue Mar 10 10:32:22 1998  Gavin Koch  <gavin@cygnus.com>

        * vr4320.igen (clz,dclz) : Added.
        (dmac): Replaced 99, with LO.

end-sanitize-vr4320
start-sanitize-cygnus
Fri Mar  6 08:30:58 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * mdmx.igen (SHFL.REPA.fmt, SHFL.REPB.fmt): Fix bit fields.

end-sanitize-cygnus
start-sanitize-vr4320
Tue Mar  3 11:56:29 1998  Gavin Koch  <gavin@cygnus.com>

        * vr4320.igen: New file.
        * 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.

end-sanitize-vr4320
Tue Mar  3 13:58:43 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (GETFCC): Return an unsigned value.

start-sanitize-r5900
        * r5900.igen: Use an unsigned array index variable `i'.
        (QFSRV): Ditto for variable bytes.
        
end-sanitize-r5900
Tue Mar  3 13:21:37 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * mips.igen (DIV): Fix check for -1 / MIN_INT.
        (DADD): Result destination is RD not RT.

start-sanitize-r5900
        * r5900.igen (DIV1): Fix check for -1 / MIN_INT.
        (DIVU1): Don't check for MIN_INT / -1 as performing unsigned
        divide.

end-sanitize-r5900
Fri Feb 27 13:49:49 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (HIACCESS, LOACCESS): Always define.

        * mdmx.igen (Maxi, Mini): Rename Max, Min.

        * interp.c (sim_info): Delete.

Fri Feb 27 18:41:01 1998  Doug Evans  <devans@canuck.cygnus.com>

        * interp.c (DECLARE_OPTION_HANDLER): Use it.
        (mips_option_handler): New argument `cpu'.
        (sim_open): Update call to sim_add_option_table.

Wed Feb 25 18:56:22 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * mips.igen (CxC1): Add tracing.

start-sanitize-r5900
Wed Feb 25 13:59:03 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * r5900.igen (StoreFP): Delete.
        (r59fp_store, r59fp_overflow, r59fp_op1, r59fp_op2, r59fp_op3):
        New functions.
        (rsqrt.s, sqrt.s): Implement.
        (r59cond): New function.
        (C.COND.S): Call r59cond in assembler line.
        (cvt.w.s, cvt.s.w): Implement.
        
        * mips.igen (rsqrt.fmt, sqrt.fmt, cvt.*.*): Remove from r5900
        instruction set.

        * sim-main.h: Define an enum of r5900 FCSR bit fields.
        
end-sanitize-r5900
start-sanitize-r5900
Tue Feb 24 14:44:18 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * r5900.igen: Add tracing to all p* instructions.

Tue Feb 24 02:47:33 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_store_register, sim_fetch_register): Pull swifty
        to get gdb talking to re-aranged sim_cpu register structure.

end-sanitize-r5900
Fri Feb 20 17:43:21 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (Max, Min): Declare.

        * interp.c (Max, Min): New functions.

        * mips.igen (BC1): Add tracing.
        
start-sanitize-cygnus
Fri Feb 20 16:27:17 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * mdmx.igen: Tag all functions as requiring either with mdmx or
        vr5400 processor.

end-sanitize-cygnus
start-sanitize-r5900
Fri Feb 20 15:55:51 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * configure.in (SIM_AC_OPTION_FLOAT): For r5900, set FP bit size
        to 32.
        (SIM_AC_OPTION_BITSIZE): For r5900, set nr address bits to 32.

        * mips.igen (C.cond.fmt, ..): Not part of r5900 insn set.

        * r5900.igen: Rewrite.

        * sim-main.h: Move r5900 registers to a separate _sim_r5900_cpu
        struct.
        (GPR_SB, GPR_SH, GPR_SW, GPR_SD, GPR_UB, GPR_UH, GPR_UW, GPR_UD):
        Define in terms of GPR/GPR1 instead of REGISTERS/REGISTERS.1
        
end-sanitize-r5900
Thu Feb 19 14:50:00 1998  John Metzler  <jmetzler@cygnus.com>
        
        * interp.c Added memory map for stack in vr4100
        
Thu Feb 19 10:21:21 1998  Gavin Koch  <gavin@cygnus.com>

        * interp.c (load_memory): Add missing "break"'s.

Tue Feb 17 12:45:35 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_store_register, sim_fetch_register): Pass in
        length parameter.  Return -1.

Tue Feb 10 11:57:40 1998  Ian Carmichael  <iancarm@cygnus.com>

        * interp.c: Added hardware init hook, fixed warnings.

Sat Feb  7 17:16:20 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * Makefile.in (itable.h itable.c): Depend on SIM_@sim_gen@_ALL.

Tue Feb  3 11:36:02 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (ifetch16): New function.

        * sim-main.h (IMEM32): Rename IMEM.
        (IMEM16_IMMED): Define.
        (IMEM16): Define.
        (DELAY_SLOT): Update.
        
        * m16run.c (sim_engine_run): New file.
        
        * m16.igen: All instructions except LB.
        (LB): Call do_load_byte.
        * mips.igen (do_load_byte): New function.
        (LB): Call do_load_byte.

        * mips.igen: Move spec for insn bit size and high bit from here.
        * Makefile.in (tmp-igen, tmp-m16): To here.

        * m16.dc: New file, decode mips16 instructions.

        * Makefile.in (SIM_NO_ALL): Define.
        (tmp-m16): Generate both 16 bit and 32 bit simulator engines.

start-sanitize-tx19
        * m16.igen: Mark all mips16 insns as being part of the tx19 insn
        set.

end-sanitize-tx19
Tue Feb  3 11:28:00 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * configure.in (mips_fpu_bitsize): For tx39, restrict floating
        point unit to 32 bit registers.
        * configure: Re-generate.

Sun Feb  1 15:47:14 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * configure.in (sim_use_gen): Make IGEN the default simulator
        generator for generic 32 and 64 bit mips targets.
        * configure: Re-generate.

Sun Feb  1 16:52:37 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (SizeFGR): Determine from floating-point and not gpr
        bitsize.

        * interp.c (sim_fetch_register, sim_store_register): Read/write
        FGR from correct location.
        (sim_open): Set size of FGR's according to
        WITH_TARGET_FLOATING_POINT_BITSIZE.
        
        * sim-main.h (FGR): Store floating point registers in a separate
        array.

Sun Feb  1 16:47:51 1998  Andrew Cagney  <cagney@b1.cygnus.com>

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

start-sanitize-cygnus
        * mdmx.igen: Mark all instructions as 64bit/fp specific.

end-sanitize-cygnus
Tue Feb  3 00:10:50 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (ColdReset): Call PENDING_INVALIDATE.

        * sim-main.h (ENGINE_ISSUE_PREFIX_HOOK): Call PENDING_TICK.

        * interp.c (pending_tick): New function.  Deliver pending writes.

        * sim-main.h (PENDING_FILL, PENDING_TICK, PENDING_SCHED,
        PENDING_BIT, PENDING_INVALIDATE): Re-write pipeline code so that
        it can handle mixed sized quantites and single bits.
        
Mon Feb  2 17:43:15 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (oengine.h): Do not include when building with IGEN.
        (sim_open): Replace GPRLEN by WITH_TARGET_WORD_BITSIZE.
        (sim_info): Ditto for PROCESSOR_64BIT.
        (sim_monitor): Replace ut_reg with unsigned_word.
        (*): Ditto for t_reg.
        (LOADDRMASK): Define.
        (sim_open): Remove defunct check that host FP is IEEE compliant,
        using software to emulate floating point.
        (value_fpr, ...): Always compile, was conditional on HASFPU.

Sun Feb  1 11:15:29 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (sim_state): Make the cpu array MAX_NR_PROCESSORS in
        size.

        * interp.c (SD, CPU): Define.
        (mips_option_handler): Set flags in each CPU.
        (interrupt_event): Assume CPU 0 is the one being iterrupted.
        (sim_close): Do not clear STATE, deleted anyway.
        (sim_write, sim_read): Assume CPU zero's vm should be used for
        data transfers.
        (sim_create_inferior): Set the PC for all processors.
        (sim_monitor, store_word, load_word, mips16_entry): Add cpu
        argument.
        (mips16_entry): Pass correct nr of args to store_word, load_word.
        (ColdReset): Cold reset all cpu's.
        (signal_exception): Pass cpu to sim_monitor & mips16_entry.
        (sim_monitor, load_memory, store_memory, signal_exception): Use
        `CPU' instead of STATE_CPU.


        * sim-main.h: Replace uses of STATE_CPU with CPU. Replace sd with
        SD or CPU_.
        
        * sim-main.h (signal_exception): Add sim_cpu arg.
        (SignalException*): Pass both SD and CPU to signal_exception.
        * interp.c (signal_exception): Update.
        
        * sim-main.h (value_fpr, store_fpr, dotrace, ifetch32), interp.c:
        Ditto
        (sync_operation, prefetch, cache_op, store_memory, load_memory,
        address_translation): Ditto
        (decode_coproc, cop_lw, cop_ld, cop_sw, cop_sd): Ditto.
        
start-sanitize-cygnus
        * mdmx.igen (get_scale): Pass CPU_ to semantic_illegal instead of
        `sd'.
        (ByteAlign): Use StoreFPR, pass args in correct order.
        
end-sanitize-cygnus
start-sanitize-r5900
Sun Feb  1 10:59:55 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * configure.in (sim_igen_filter): For r5900, configure as SMP.

end-sanitize-r5900
Sat Jan 31 18:15:41 1998  Andrew Cagney  <cagney@b1.cygnus.com>

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

Sat Jan 31 14:49:24 1998  Andrew Cagney  <cagney@b1.cygnus.com>

start-sanitize-r5900
        * configure.in (sim_igen_filter): For r5900, use igen.
        * configure: Re-generate.
        
end-sanitize-r5900
        * interp.c (sim_engine_run): Add `nr_cpus' argument.

        * mips.igen (model): Map processor names onto BFD name. 

        * sim-main.h (CPU_CIA): Delete.
        (SET_CIA, GET_CIA): Define

Wed Jan 21 16:16:27 1998  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (GPR_SET): Define, used by igen when zeroing a
        regiser.

        * configure.in (default_endian): Configure a big-endian simulator
        by default.
        * configure: Re-generate.
        
Mon Jan 19 22:26:29 1998  Doug Evans  <devans@seba>

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

Mon Jan  5 20:38:54 1998  Mark Alexander  <marka@cygnus.com>

        * interp.c (sim_monitor): Handle Densan monitor outbyte
        and inbyte functions.

1997-12-29  Felix Lee  <flee@cygnus.com>

        * interp.c (sim_engine_run): msvc cpp barfs on #if (a==b!=c).

Wed Dec 17 14:48:20 1997  Jeffrey A Law  (law@cygnus.com)

        * Makefile.in (tmp-igen): Arrange for $zero to always be
        reset to zero after every instruction.

Mon Dec 15 23:17:11 1997  Andrew Cagney  <cagney@b1.cygnus.com>

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

start-sanitize-cygnus
Sat Dec 13 15:18:51 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * vr5400.igen (Low32Bits, High32Bits): Sign extend extracted 32
        bit values.

Fri Dec 12 12:26:07 1997  Jeffrey A Law  (law@cygnus.com)

        * configure.in (sim_igen_filter): Multi-sim vr5000 - vr5000 or
        vr5400 with the vr5000 as the default.

end-sanitize-cygnus
Wed Dec 10 17:10:45 1997  Jeffrey A Law  (law@cygnus.com)

        * mips.igen (MSUB): Fix to work like MADD.
        * gencode.c (MSUB): Similarly.

start-sanitize-cygnus
Tue Dec  9 12:02:12 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * configure.in (sim_igen_filter): Multi-sim vr5400 - vr5000 or
        vr5400.

end-sanitize-cygnus
Thu Dec  4 09:21:05 1997  Doug Evans  <devans@canuck.cygnus.com>

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

Wed Nov 26 11:00:23 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * mips.igen (LWC1): Correct assembler - lwc1 not swc1.

start-sanitize-cygnus
        * mdmx.igen (value_vr): Correct sim_io_eprintf format argument.
        (value_cc, store_cc): Implement.

        * sim-main.h: Add 8*3*8 bit accumulator.

        * vr5400.igen: Move mdmx instructins from here
        * mdmx.igen: To here - new file. Add/fix missing instructions.
        * mips.igen: Include mdmx.igen.
        * Makefile.in (IGEN_INCLUDE): Add mdmx.igen.

end-sanitize-cygnus
Sun Nov 23 01:45:20 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (sim-fpu.h): Include.

        * interp.c (convert, SquareRoot, Recip, Divide, Multiply, Sub,
        Add, Negate, AbsoluteValue, Equal, Less, Infinity, NaN): Rewrite
        using host independant sim_fpu module.

Thu Nov 20 19:56:22 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (signal_exception): Report internal errors with SIGABRT
        not SIGQUIT.

        * sim-main.h (C0_CONFIG): New register.
        (signal.h): No longer include.

        * interp.c (decode_coproc): Allow access C0_CONFIG to register.

Tue Nov 18 15:33:48 1997  Doug Evans  <devans@canuck.cygnus.com>

        * Makefile.in (SIM_OBJS): Use $(SIM_NEW_COMMON_OBJS).

Fri Nov 14 11:56:48 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * mips.igen: Tag vr5000 instructions.
        (ANDI): Was missing mipsIV model, fix assembler syntax.
        (do_c_cond_fmt): New function.
        (C.cond.fmt): Handle mips I-III which do not support CC field
        separatly.
        (bc1): Handle mips IV which do not have a delaed FCC separatly.
        (SDR): Mask paddr when BigEndianMem, not the converse as specified
        in IV3.2 spec.
        (DMULT, DMULTU): Force use of hosts 64bit multiplication.  Handle
        vr5000 which saves LO in a GPR separatly.
        
        * configure.in (enable-sim-igen): For vr5000, select vr5000
        specific instructions.
        * configure: Re-generate.
        
Wed Nov 12 14:42:52 1997  Andrew Cagney  <cagney@b1.cygnus.com>

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

        * interp.c (store_fpr), sim-main.h: Add separate fmt_uninterpreted_32 and
        fmt_uninterpreted_64 bit cases to switch.  Convert to
        fmt_formatted,

        * sim-main.h (ENGINE_ISSUE_PREFIX_HOOK): Define,

        * mips.igen (SWR): Mask paddr when BigEndianMem, not the converse
        as specified in IV3.2 spec.
        (MTC1, DMTC1): Call StoreFPR to store the GPR in the FPR.

Tue Nov 11 12:38:23 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * mips.igen: Delay slot branches add OFFSET to NIA not CIA.
        (MFC0, MTC0, SWC1, LWC1, SDC1, LDC1): Implement.
        (start-sanitize-r5900):
        (LWXC1, SWXC1): Delete from r5900 instruction set.
        (end-sanitize-r5900):
        (MTC1, MFC1, DMTC1, DMFC1, CFC1, CTC1): Implement separate non
        PENDING_FILL versions of instructions.  Simplify.
        (X): New function.
        (MULT, MULTU): Implement separate RD==0 and RD!=0 versions of
        instructions.
        (BEQZ, ..., SLT, SLTI, TLT, TLE, TLI, ...): Explicitly cast GPR to
        a signed value.
        (MTHI, MFHI): Disable code checking HI-LO.
        
        * sim-main.h (dotrace,tracefh), interp.c: Make dotrace & tracefh
        global.
        (NULLIFY_NEXT_INSTRUCTION): Call dotrace.

Thu Nov  6 16:36:35 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * gencode.c (build_mips16_operands): Replace IPC with cia.

        * interp.c (sim_monitor, signal_exception, cache_op, store_fpr,
        value_fpr, cop_ld, cop_lw, cop_sw, cop_sd, decode_coproc): Replace
        IPC to `cia'.
        (UndefinedResult): Replace function with macro/function
        combination.
        (sim_engine_run): Don't save PC in IPC.

        * sim-main.h (IPC): Delete.

        start-sanitize-cygnus
        * vr5400.igen (vr): Add missing cia argument to value_fpr.
        (do_select): Rename function select.
        end-sanitize-cygnus

        * interp.c (signal_exception, store_word, load_word,
        address_translation, load_memory, store_memory, cache_op,
        prefetch, sync_operation, ifetch, value_fpr, store_fpr, convert,
        cop_lw, cop_ld, cop_sw, cop_sd, decode_coproc, sim_monitor): Add
        current instruction address - cia - argument.
        (sim_read, sim_write): Call address_translation directly.
        (sim_engine_run): Rename variable vaddr to cia.
        (signal_exception): Pass cia to sim_monitor
        
        * sim-main.h (SignalException, LoadWord, StoreWord, CacheOp,
        Prefetch, SyncOperation, ValueFPR, StoreFPR, Convert, COP_LW,
        COP_LD, COP_SW, COP_SD, DecodeCoproc): Update.

        * sim-main.h (SignalExceptionSimulatorFault): Delete definition.
        * interp.c (sim_open): Replace SignalExceptionSimulatorFault with
        SIM_ASSERT.
        
        * interp.c (signal_exception): Pass restart address to
        sim_engine_restart.

        * Makefile.in (semantics.o, engine.o, support.o, itable.o,
        idecode.o): Add dependency.

        * sim-main.h (SIM_ENGINE_HALT_HOOK, SIM_ENGINE_RESUME_HOOK):
        Delete definitions
        (DELAY_SLOT): Update NIA not PC with branch address.
        (NULLIFY_NEXT_INSTRUCTION): Set NIA to instruction after next.

        * mips.igen: Use CIA not PC in branch calculations.
        (illegal): Call SignalException.
        (BEQ, ADDIU): Fix assembler.

Wed Nov  5 12:19:56 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * m16.igen (JALX): Was missing.

        * configure.in (enable-sim-igen): New configuration option.
        * configure: Re-generate.
        
        * sim-main.h (MAX_INSNS, INSN_NAME): Define.

        * interp.c (load_memory, store_memory): Delete parameter RAW.
        (sim_read, sim_write): Use sim_core_{read,write}_buffer directly
        bypassing {load,store}_memory.

        * sim-main.h (ByteSwapMem): Delete definition.

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

        * interp.c (sim_do_command, sim_commands): Delete mips specific
        commands.  Handled by module sim-options.
                
        * sim-main.h (SIM_HAVE_FLATMEM): Undefine, use sim-core.o module.
        (WITH_MODULO_MEMORY): Define.

        * interp.c (sim_info): Delete code printing memory size.

        * interp.c (mips_size): Nee sim_size, delete function.
        (power2): Delete.
        (monitor, monitor_base, monitor_size): Delete global variables.
        (sim_open, sim_close): Delete code creating monitor and other
        memory regions.  Use sim-memopts module, via sim_do_commandf, to
        manage memory regions.
        (load_memory, store_memory): Use sim-core for memory model.
        
        * interp.c (address_translation): Delete all memory map code
        except line forcing 32 bit addresses.

Wed Nov  5 11:21:11 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (WITH_TRACE): Delete definition.  Enables common
        trace options.

        * interp.c (logfh, logfile): Delete globals.
        (sim_open, sim_close): Delete code opening & closing log file.
        (mips_option_handler): Delete -l and -n options.
        (OPTION mips_options): Ditto.

        * interp.c (OPTION mips_options): Rename option trace to dinero.
        (mips_option_handler): Update.

Wed Nov  5 09:35:59 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (fetch_str): New function.
        (sim_monitor): Rewrite using sim_read & sim_write.
        (sim_open): Check magic number.
        (sim_open): Write monitor vectors into memory using sim_write.
        (MONITOR_BASE, MONITOR_SIZE, MEM_SIZE): Define.
        (sim_read, sim_write): Simplify - transfer data one byte at a
        time.
        (load_memory, store_memory): Clarify meaning of parameter RAW.

        * sim-main.h (isHOST): Defete definition.
        (isTARGET): Mark as depreciated.
        (address_translation): Delete parameter HOST.

        * interp.c (address_translation): Delete parameter HOST.

start-sanitize-tx49
Wed Oct 29 14:21:32 1997  Gavin Koch  <gavin@cygnus.com>

        * gencode.c: Add tx49 configury and insns.
        * configure.in: Add tx49 configury.
        * configure: Update.

end-sanitize-tx49
Wed Oct 29 11:13:56 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * mips.igen: 

        * Makefile.in (IGEN_INCLUDE): Files included by mips.igen.
        (tmp-igen, tmp-m16): Depend on IGEN_INCLUDE.

Tue Oct 28 11:06:47 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * mips.igen: Add model filter field to records.

Mon Oct 27 17:53:59 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * Makefile.in (SIM_NO_CFLAGS): Define.  Define WITH_IGEN=0.
        
        interp.c (sim_engine_run): Do not compile function sim_engine_run
        when WITH_IGEN == 1.

        * configure.in (sim_igen_flags, sim_m16_flags): Set according to
        target architecture.

        Makefile.in (tmp-igen, tmp-m16): Drop -F and -M options to
        igen. Replace with configuration variables sim_igen_flags /
        sim_m16_flags.

        start-sanitize-r5900
        * r5900.igen: New file. Copy r5900 insns here.
        end-sanitize-r5900
        start-sanitize-cygnus
        * vr5400.igen: New file. 
        end-sanitize-cygnus
        * m16.igen: New file.  Copy mips16 insns here.
        * mips.igen: From here.

Mon Oct 27 13:53:59 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        start-sanitize-cygnus
        * mips.igen: Tag all mipsIV instructions with vr5400 model.

        * configure.in: Add mips64vr5400 target.
        * configure: Re-generate.

        end-sanitize-cygnus
        * Makefile.in (SIM_NO_OBJ): Define, move SIM_M16_OBJ, SIM_IGEN_OBJ
        to top.
        (tmp-igen, tmp-m16): Pass -I srcdir to igen.

Sat Oct 25 16:51:40 1997  Gavin Koch  <gavin@cygnus.com>

        * gencode.c (build_instruction): Follow sim_write's lead in using
        BigEndianMem instead of !ByteSwapMem.

Fri Oct 24 17:41:49 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * configure.in (sim_gen): Dependent on target, select type of
        generator.  Always select old style generator.

        configure: Re-generate.

        Makefile.in (tmp-igen, tmp-m16, clean-m16, clean-igen): New
        targets.
        (SIM_M16_CFLAGS, SIM_M16_ALL, SIM_M16_OBJ, BUILT_SRC_FROM_M16,
        SIM_IGEN_CFLAGS, SIM_IGEN_ALL, SIM_IGEN_OBJ, BUILT_SRC_FROM_IGEN,
        IGEN_TRACE, IGEN_INSN, IGEN_DC): Define
        (SIM_EXTRA_CFLAGS, SIM_EXTRA_ALL, SIM_OBJS): Add member
        SIM_@sim_gen@_*, set by autoconf.
        
Wed Oct 22 12:52:06 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (NULLIFY_NEXT_INSTRUCTION, DELAY_SLOT): Define.

        * interp.c (ColdReset): Remove #ifdef HASFPU, check
        CURRENT_FLOATING_POINT instead.

        * interp.c (ifetch32): New function. Fetch 32 bit instruction.
        (address_translation): Raise exception InstructionFetch when
        translation fails and isINSTRUCTION.
        
        * interp.c (sim_open, sim_write, sim_monitor, store_word,
        sim_engine_run): Change type of of vaddr and paddr to
        address_word.
        (address_translation, prefetch, load_memory, store_memory,
        cache_op): Change type of vAddr and pAddr to address_word.

        * gencode.c (build_instruction): Change type of vaddr and paddr to
        address_word.

Mon Oct 20 15:29:04 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (ALU64_END, ALU32_END): Use ALU*_OVERFLOW_RESULT
        macro to obtain result of ALU op.

Tue Oct 21 17:39:14 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_info): Call profile_print.

Mon Oct 20 13:31:20 1997  Andrew Cagney  <cagney@b1.cygnus.com>

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

        * sim-main.h (WITH_PROFILE): Do not define, defined in
        common/sim-config.h.  Use sim-profile module.
        (simPROFILE): Delete defintion.

        * interp.c (PROFILE): Delete definition.
        (mips_option_handler): Delete 'p', 'y' and 'x' profile options.
        (sim_close): Delete code writing profile histogram.
        (mips_set_profile, mips_set_profile_size, writeout16, writeout32):
        Delete.
        (sim_engine_run): Delete code profiling the PC.

Mon Oct 20 13:31:20 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * sim-main.h (SIGNEXTEND): Force type of result to unsigned_word.

        * interp.c (sim_monitor): Make register pointers of type
        unsigned_word*.

        * sim-main.h: Make registers of type unsigned_word not
        signed_word.

Thu Oct 16 10:31:39 1997  Andrew Cagney  <cagney@b1.cygnus.com>

start-sanitize-r5900
        * sim-main.h (BYTES_IN_MMI_REGS, ..., SUB_REG_FETCH, ..., GPR_SB,
        ...): Move to sim-main.h
        
end-sanitize-r5900
        * interp.c (sync_operation): Rename from SyncOperation, make
        global, add SD argument.
        (prefetch): Rename from Prefetch, make global, add SD argument.
        (decode_coproc): Make global.

        * sim-main.h (SyncOperation, DecodeCoproc, Pefetch): Define.

        * gencode.c (build_instruction): Generate DecodeCoproc not
        decode_coproc calls.

        * interp.c (SETFCC, GETFCC, PREVCOC1): Move to sim-main.h
        (SizeFGR): Move to sim-main.h
        (simHALTEX, simHALTIN, simTRACE, simPROFILE, simDELAYSLOT,
        simSIGINT, simJALDELAYSLOT): Move to sim-main.h
        (FP_FLAGS, FP_ENABLE, FP_CAUSE, IR, UF, OF, DZ, IO, UO): Move to
        sim-main.h.
        (FP_FS, FP_MASK_RM, FP_SH_RM, FP_RM_NEAREST, FP_RM_TOPINF,
        FP_RM_TOMINF, GETRM): Move to sim-main.h.
        (Uncached, CachedNoncoherent, CachedCoherent, Cached,
        isINSTRUCTION, ..., AccessLength_BYTE, ...): Move to sim-main.h.
        (UserMode, BigEndianMem, ByteSwapMem, ReverseEndian,
        BigEndianCPU, status_KSU_mask, ...). Moved to sim-main.h
        
        * sim-main.h (ALU32_END, ALU64_END): Define. When overflow raise
        exception.
        (sim-alu.h): Include.
        (NULLIFY_NIA, NULL_CIA, CPU_CIA): Define.
        (sim_cia): Typedef to instruction_address.
        
Thu Oct 16 10:31:41 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * Makefile.in (interp.o): Rename generated file engine.c to
        oengine.c.
        
        * interp.c: Update.
        
Thu Oct 16 10:31:40 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * gencode.c (build_instruction): Use FPR_STATE not fpr_state.
        
Thu Oct 16 10:31:39 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * gencode.c (build_instruction): For "FPSQRT", output correct
        number of arguments to Recip.
        
Tue Oct 14 17:38:18 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * Makefile.in (interp.o): Depends on sim-main.h

        * interp.c (mips16_entry, ColdReset,dotrace): Add SD argument. Use GPR not registers.

        * sim-main.h (sim_cpu): Add registers, register_widths, fpr_state,
        ipc, dspc, pending_*, hiaccess, loaccess, state, dsstate fields.
        (REGISTERS, REGISTER_WIDTHS, FPR_STATE, IPC, DSPC, PENDING_*,
        STATE, DSSTATE): Define
        (GPR, FGRIDX, ..): Define.

        * interp.c (registers, register_widths, fpr_state, ipc, dspc,
        pending_*, hiaccess, loaccess, state, dsstate): Delete globals.
        (GPR, FGRIDX, ...): Delete macros.
        
        * interp.c: Update names to match defines from sim-main.h
        
Tue Oct 14 15:11:45 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_monitor): Add SD argument.
        (sim_warning): Delete.  Replace calls with calls to
        sim_io_eprintf.
        (sim_error): Delete. Replace calls with sim_io_error.
        (open_trace, writeout32, writeout16, getnum): Add SD argument.
        (mips_set_profile): Rename from sim_set_profile. Add SD argument.
        (mips_set_profile_size): Rename from sim_set_profile_size. Add SD
        argument.
        (mips_size): Rename from sim_size. Add SD argument.

        * interp.c (simulator): Delete global variable.
        (callback): Delete global variable.
        (mips_option_handler, sim_open, sim_write, sim_read,
        sim_store_register, sim_fetch_register, sim_info, sim_do_command,
        sim_size,sim_monitor): Use sim_io_* not callback->*.
        (sim_open): ZALLOC simulator struct.
        (PROFILE): Do not define.

Tue Oct 14 13:35:48 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_open), support.h: Replace CHECKSIM macro found in
        support.h with corresponding code.

        * sim-main.h (word64, uword64), support.h: Move definition to
        sim-main.h.
        (WORD64LO, WORD64HI, SET64LO, SET64HI, WORD64, UWORD64): Ditto.

        * support.h: Delete
        * Makefile.in: Update dependencies
        * interp.c: Do not include.
        
Tue Oct 14 13:35:48 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (address_translation, load_memory, store_memory,
        cache_op): Rename to from AddressTranslation et.al., make global,
        add SD argument
        
        * sim-main.h (AddressTranslation, LoadMemory, StoreMemory,
        CacheOp): Define.
        
        * interp.c (SignalException): Rename to signal_exception, make
        global.

        * interp.c (Interrupt, ...): Move definitions to sim-main.h.
        
        * sim-main.h (SignalException, SignalExceptionInterrupt,
        SignalExceptionInstructionFetch, SignalExceptionAddressStore,
        SignalExceptionAddressLoad, SignalExceptionSimulatorFault,
        SignalExceptionIntegerOverflow, SignalExceptionCoProcessorUnusable):
        Define.
        
        * interp.c, support.h: Use.
        
Tue Oct 14 13:19:20 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (ValueFPR, StoreFPR), sim-main.h: Make global, rename
        to value_fpr / store_fpr. Add SD argument.
        (NaN, Infinity, Less, Equal, AbsoluteValue, Negate, Add, Sub,
        Multiply, Divide, Recip, SquareRoot, Convert): Make global.

        * sim-main.h (ValueFPR, StoreFPR): Define.
        
Tue Oct 14 13:06:55 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_engine_run): Check consistency between configure
        WITH_TARGET_WORD_BITSIZE and WITH_FLOATING_POINT and gensim GPRLEN
        and HASFPU.

        * configure.in (mips_bitsize): Configure WITH_TARGET_WORD_BITSIZE.
        (mips_fpu): Configure WITH_FLOATING_POINT.
        (mips_endian): Configure WITH_TARGET_ENDIAN.
        * configure: Update.

Fri Oct  3 09:28:00 1997  Andrew Cagney  <cagney@b1.cygnus.com>

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

start-sanitize-r5900
Mon Aug 25 19:11:15 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (MAX_REG): Allow up-to 128 registers.
        (LO1, HI1): Define value that matches REGISTER_NAMES in gdb.
        (REGISTER_SA): Ditto.
        (sim_open): Initialize register_widths for r5900 specific
        registers.
        (sim_fetch_register, sim_store_register): Check for request of
        r5900 specific SA register.  Check for request for hi 64 bits of
        r5900 specific registers.
        
end-sanitize-r5900
Mon Sep 29 14:45:00 1997  Bob Manson  <manson@charmed.cygnus.com>

        * configure: Regenerated.

Fri Sep 26 12:48:18 1997  Mark Alexander  <marka@cygnus.com>

        * interp.c: Allow Debug, DEPC, and EPC registers to be examined in GDB.

Thu Sep 25 11:15:22 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * gencode.c (print_igen_insn_models): Assume certain architectures
        include all mips* instructions.
        (print_igen_insn_format): Use data_size==-1 as marker for MIPS16
        instruction.

        * Makefile.in (tmp.igen): Add target. Generate igen input from
        gencode file.

        * gencode.c (FEATURE_IGEN): Define.
        (main): Add --igen option.  Generate output in igen format.
        (process_instructions): Format output according to igen option.
        (print_igen_insn_format): New function.
        (print_igen_insn_models): New function.
        (process_instructions): Only issue warnings and ignore
        instructions when no FEATURE_IGEN.

Wed Sep 24 17:38:57 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (COP_SD, COP_LD): Add UNUSED to pacify GCC for some
        MIPS targets.

Tue Sep 23 11:04:38 1997  Andrew Cagney  <cagney@b1.cygnus.com>

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

Tue Sep 23 10:19:51 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * Makefile.in (SIM_ALIGNMENT, SIM_ENDIAN, SIM_HOSTENDIAN,
        SIM_RESERVED_BITS): Delete, moved to common.
        (SIM_EXTRA_CFLAGS): Update.
        
Mon Sep 22 11:46:20 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * configure.in: Configure non-strict memory alignment.
        * configure: Regenerated to track ../common/aclocal.m4 changes.

Fri Sep 19 17:45:25 1997  Andrew Cagney  <cagney@b1.cygnus.com>

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

Sat Sep 20 14:07:28 1997  Gavin Koch  <gavin@cygnus.com>

        * gencode.c (SDBBP,DERET): Added (3900) insns.
        (RFE): Turn on for 3900.
        * interp.c (DebugBreakPoint,DEPC,Debug,Debug_*): Added.
        (dsstate): Made global.
        (SUBTARGET_R3900): Added.
        (CANCELDELAYSLOT): New.
        (SignalException): Ignore SystemCall rather than ignore and
        terminate.  Add DebugBreakPoint handling.
        (decode_coproc): New insns RFE, DERET; and new registers Debug
        and DEPC protected by SUBTARGET_R3900.
        (sim_engine_run): Use CANCELDELAYSLOT rather than clearing
        bits explicitly.
        * Makefile.in,configure.in: Add mips subtarget option.
        * configure: Update.    

Fri Sep 19 09:33:27 1997  Gavin Koch  <gavin@cygnus.com>

        * gencode.c: Add r3900 (tx39).
        
start-sanitize-tx19
        * gencode.c: Fix some configuration problems by improving 
        the relationship between tx19 and tx39.
end-sanitize-tx19

Tue Sep 16 15:52:04 1997  Gavin Koch  <gavin@cygnus.com>

        * gencode.c (build_instruction): Don't need to subtract 4 for
        JALR, just 2.

Tue Sep 16 11:32:28 1997  Gavin Koch  <gavin@cygnus.com>

        * interp.c: Correct some HASFPU problems.

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

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

Fri Sep 12 12:01:39 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (mips_options): Fix samples option short form, should
        be `x'.

Thu Sep 11 09:35:29 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_info): Enable info code.  Was just returning.

Tue Sep  9 17:30:57 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (decode_coproc): Clarify warning about unsuported MTC0,
        MFC0.

Tue Sep  9 16:28:28 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * gencode.c (build_instruction): Use SIGNED64 for 64 bit
        constants.
        (build_instruction): Ditto for LL.

start-sanitize-tx19
Sun Sep  7 16:05:46 1997  Gavin Koch  <gavin@cygnus.com>

        * mips/configure.in, mips/gencode: Add tx19/r1900.

end-sanitize-tx19
Thu Sep  4 17:21:23 1997  Doug Evans  <dje@seba>

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

start-sanitize-r5900
Mon Sep  1 18:43:30 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * gencode.c (build_instruction): For "pabsw" and "pabsh", check
        for overflow due to ABS of MININT, set result to MAXINT.
        (build_instruction): For "psrlvw", signextend bit 31.

end-sanitize-r5900
Wed Aug 27 18:13:22 1997  Andrew Cagney  <cagney@b1.cygnus.com>

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

Wed Aug 27 14:12:27 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_open): Add call to sim_analyze_program, update
        call to sim_config.

Tue Aug 26 10:40:07 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_kill): Delete.
        (sim_create_inferior): Add ABFD argument. Set PC from same.
        (sim_load): Move code initializing trap handlers from here.
        (sim_open): To here.
        (sim_load): Delete, use sim-hload.c.

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

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 15:59:48 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_open): Add ABFD argument.
        (sim_load): Move call to sim_config from here.
        (sim_open): To here.  Check return status.

start-sanitize-r5900
        * gencode.c (build_instruction): Do not define x8000000000000000,
        x7FFFFFFFFFFFFFFF, or xFFFFFFFF80000000.

end-sanitize-r5900
start-sanitize-r5900
Mon Jul 28 19:49:29 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * gencode.c (build_instruction): For "pdivw", "pdivbw" and
        "pdivuw" check for overflow due to signed divide by -1.

end-sanitize-r5900
Fri Jul 25 15:00:45 1997  Gavin Koch  <gavin@cygnus.com>
 
        * gencode.c (build_instruction): Two arg MADD should
        not assign result to $0.
 
start-sanitize-r5900
Thu Jul 10 11:58:48 1997  Andrew Cagney  <cagney@critters.cygnus.com>

        * gencode.c (build_instruction): For "ppac5" use unsigned
        arrithmetic so that the sign bit doesn't smear when right shifted.
        (build_instruction): For "pdiv" perform sign extension when
        storing results in HI and LO.
        (build_instructions): For "pdiv" and "pdivbw" check for
        divide-by-zero.
        (build_instruction): For "pmfhl.slw" update hi part of dest
        register as well as low part.
        (build_instruction): For "pmfhl" portably handle long long values.
        (build_instruction): For "pmfhl.sh" correctly negative values.
        Store half words 2 and three in the correct place.
        (build_instruction): For "psllvw", sign extend value after shift.

end-sanitize-r5900
Thu Jun 26 12:13:17 1997  Angela Marie Thomas (angela@cygnus.com)

        * sim/mips/configure: Change default_sim_endian to 0 (bi-endian)
        * sim/mips/configure.in: Regenerate.

Wed Jul  9 10:29:21 1997  Andrew Cagney  <cagney@critters.cygnus.com>

        * interp.c (SUB_REG_UW, SUB_REG_SW, SUB_REG_*): Use more explicit
        signed8, unsigned8 et.al. types.

start-sanitize-r5900
        * gencode.c (build_instruction): For PMULTU* do not sign extend
        registers.  Make generated code easier to debug.

end-sanitize-r5900
        * interp.c (SUB_REG_FETCH): Handle both little and big endian
        hosts when selecting subreg.

start-sanitize-r5900
Tue Jul  8 18:07:20 1997  Andrew Cagney  <cagney@andros.cygnus.com>

        * gencode.c (type_for_data_len): For 32bit operations concerned
        with overflow, perform op using 64bits.
        (build_instruction): For PADD, always compute operation using type
        returned by type_for_data_len.
        (build_instruction): For PSUBU, when overflow, saturate to zero as
        actually underflow.

end-sanitize-r5900
Wed Jul  2 11:54:10 1997  Jeffrey A Law  (law@cygnus.com)

start-sanitize-r5900
        * gencode.c (build_instruction): Handle "pext5" according to
        version 1.95 of the r5900 ISA.

        * gencode.c (build_instruction): Handle "ppac5" according to
        version 1.95 of the r5900 ISA.

end-sanitize-r5900
        * interp.c (sim_engine_run): Reset the ZERO register to zero
        regardless of FEATURE_WARN_ZERO.
        * gencode.c (FEATURE_WARNINGS): Remove FEATURE_WARN_ZERO.

Wed Jun  4 10:43:14 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (decode_coproc): Implement MTC0 N, CAUSE.
        (SignalException): For BreakPoints ignore any mode bits and just
        save the PC.
        (SignalException): Always set the CAUSE register.

Tue Jun  3 05:00:33 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (SignalException): Clear the simDELAYSLOT flag when an
        exception has been taken.

        * interp.c: Implement the ERET and mt/f sr instructions.

start-sanitize-r5900
Mon Jun  2 23:28:19 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * gencode.c (build_instruction): For paddu, extract unsigned
        sub-fields.

        * gencode.c (build_instruction): Saturate padds instead of padd
        instructions.

end-sanitize-r5900
Sat May 31 00:44:16 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (SignalException): Don't bother restarting an
        interrupt.

Fri May 30 23:41:48 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (SignalException): Really take an interrupt.
        (interrupt_event): Only deliver interrupts when enabled.

Tue May 27 20:08:06 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_info): Only print info when verbose.
        (sim_info) Use sim_io_printf for output.
        
Tue May 27 14:22:23 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (CoProcPresent): Add UNUSED attribute - not used by all
        mips architectures.

Tue May 27 14:22:23 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_do_command): Check for common commands if a
        simulator specific command fails.

Thu May 22 09:32:03 1997  Gavin Koch  <gavin@cygnus.com>

        * interp.c (sim_engine_run): ifdef out uses of simSTOP, simSTEP
        and simBE when DEBUG is defined.

Wed May 21 09:08:10 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (interrupt_event): New function.  Pass exception event
        onto exception handler.

        * configure.in: Check for stdlib.h.
        * configure: Regenerate.

        * gencode.c (build_instruction): Add UNUSED attribute to tempS
        variable declaration.
        (build_instruction): Initialize memval1.
        (build_instruction): Add UNUSED attribute to byte, bigend,
        reverse.
        (build_operands): Ditto.

        * interp.c: Fix GCC warnings.
        (sim_get_quit_code): Delete.

        * configure.in: Add INLINE, ENDIAN, HOSTENDIAN and WARNINGS.
        * Makefile.in: Ditto.
        * configure: Re-generate.
        
        * Makefile.in (SIM_OBJS): Add sim-watch.o module.

Tue May 20 15:08:56 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (mips_option_handler): New function parse argumes using
        sim-options.
        (myname): Replace with STATE_MY_NAME.
        (sim_open): Delete check for host endianness - performed by
        sim_config.
        (simHOSTBE, simBE): Delete, replaced by sim-endian flags.
        (sim_open): Move much of the initialization from here.
        (sim_load): To here.  After the image has been loaded and
        endianness set.
        (sim_open): Move ColdReset from here.
        (sim_create_inferior): To here.
        (sim_open): Make FP check less dependant on host endianness.

        * Makefile.in (SIM_RUN_OBJS): Set to nrun.o - use new version or
        run.
        * interp.c (sim_set_callbacks): Delete.

        * interp.c (membank, membank_base, membank_size): Replace with
        STATE_MEMORY, STATE_MEM_SIZE, STATE_MEM_BASE.
        (sim_open): Remove call to callback->init. gdb/run do this.

        * interp.c: Update

        * sim-main.h (SIM_HAVE_FLATMEM): Define.

        * interp.c (big_endian_p): Delete, replaced by
        current_target_byte_order.

Tue May 20 13:55:00 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (host_read_long, host_read_word, host_swap_word,
        host_swap_long): Delete. Using common sim-endian.
        (sim_fetch_register, sim_store_register): Use H2T.
        (pipeline_ticks): Delete.  Handled by sim-events.
        (sim_info): Update.
        (sim_engine_run): Update.

Tue May 20 13:42:03 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_stop_reason): Move code determining simEXCEPTION
        reason from here.
        (SignalException): To here. Signal using sim_engine_halt.
        (sim_stop_reason): Delete, moved to common.
        
Tue May 20 10:19:48 1997  Andrew Cagney  <cagney@b2.cygnus.com>

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

Mon May 19 18:20:38 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * Makefile.in (SIM_OBJS): Add common modules.

        * interp.c (sim_set_callbacks): Also set SD callback.
        (set_endianness, xfer_*, swap_*): Delete.
        (host_read_word, host_read_long, host_swap_word, host_swap_long):
        Change to functions using sim-endian macros.
        (control_c, sim_stop): Delete, use common version.
        (simulate): Convert into.
        (sim_engine_run): This function.
        (sim_resume): Delete.
        
        * interp.c (simulation): New variable - the simulator object.
        (sim_kind): Delete global - merged into simulation.
        (sim_load): Cleanup.  Move PC assignment from here.
        (sim_create_inferior): To here.

        * sim-main.h: New file.
        * interp.c (sim-main.h): Include.
        
Thu Apr 24 00:39:51 1997  Doug Evans  <dje@canuck.cygnus.com>

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

Wed Apr 23 17:32:19 1997  Doug Evans  <dje@canuck.cygnus.com>

        * tconfig.in (SIM_HAVE_BIENDIAN): Define.

Mon Apr 21 17:16:13 1997  Gavin Koch  <gavin@cygnus.com>

        * gencode.c (build_instruction): DIV instructions: check 
        for division by zero and integer overflow before using 
        host's division operation.

Thu Apr 17 03:18:14 1997  Doug Evans  <dje@canuck.cygnus.com>

        * Makefile.in (SIM_OBJS): Add sim-load.o.
        * interp.c: #include bfd.h.
        (target_byte_order): Delete.
        (sim_kind, myname, big_endian_p): New static locals.
        (sim_open): Set sim_kind, myname.  Move call to set_endianness to
        after argument parsing.  Recognize -E arg, set endianness accordingly.
        (sim_load): Return SIM_RC.  New arg abfd.  Call sim_load_file to
        load file into simulator.  Set PC from bfd.
        (sim_create_inferior): Return SIM_RC.  Delete arg start_address.
        (set_endianness): Use big_endian_p instead of target_byte_order.

Wed Apr 16 17:55:37 1997  Andrew Cagney  <cagney@b1.cygnus.com>

        * interp.c (sim_size): Delete prototype - conflicts with
        definition in remote-sim.h.  Correct definition.

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.

Tue Mar 25 11:38:22 1997  Doug Evans  <dje@canuck.cygnus.com>

        * interp.c (sim_open): Set optind to 0 before calling getopt.

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

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

Mon Mar 17 10:52:59 1997  Gavin Koch  <gavin@cetus.cygnus.com>

        * interp.c : Replace uses of pr_addr with pr_uword64
        where the bit length is always 64 independent of SIM_ADDR.
        (pr_uword64) : added.

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 12:51:36 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.

start-sanitize-r5900
Wed Feb 26 18:32:21 1997  Gavin Koch  <gavin@cygnus.com>

        * gencode.c (POP_AND,POP_OR,POP_NOR,POP_XOR): 
        Change values to avoid overloading DOUBLEWORD which is tested
        for all insns.
        * gencode.c: reinstate "offending code".

end-sanitize-r5900
Mon Feb 24 22:47:14 1997  Dawn Perchik  <dawn@cygnus.com>

        * interp.c: Fix printing of addresses for non-64-bit targets.
        (pr_addr): Add function to print address based on size.
start-sanitize-r5900
        * gencode.c: #ifdef out offending code until a permanent fix 
        can be added.  Code is causing build errors for non-5900 mips targets.
end-sanitize-r5900

start-sanitize-r5900
Thu Feb 20 10:40:24 1997  Gavin Koch  <gavin@cetus.cygnus.com>

        * gencode.c (process_instructions): Correct test for ISA dependent
        architecture bits in isa field of MIPS_DECODE.

end-sanitize-r5900
Wed Feb 19 14:42:09 1997  Mark Alexander  <marka@cygnus.com>

        * interp.c (simopen): Add support for LSI MiniRISC PMON vectors.

start-sanitize-r5900
Tue Feb 18 17:03:47 1997  Gavin Koch  <gavin@cygnus.com>

        * gencode.c (MIPS_DECODE): Correct instruction feature flags for 
        PMADDUW.

end-sanitize-r5900
Thu Feb 13 14:08:30 1997  Ian Lance Taylor  <ian@cygnus.com>

        * gencode.c (build_mips16_operands): Correct computation of base
        address for extended PC relative instruction.

start-sanitize-r5900
Fri Feb  7 11:12:44 1997  Gavin Koch  <gavin@cygnus.com>

        * Makefile.in, configure, configure.in, gencode.c, 
        interp.c, support.h: add r5900.

end-sanitize-r5900
Thu Feb  6 17:16:15 1997  Ian Lance Taylor  <ian@cygnus.com>

        * interp.c (mips16_entry): Add support for floating point cases.
        (SignalException): Pass floating point cases to mips16_entry.
        (ValueFPR): Don't restrict fmt_single and fmt_word to even
        registers.
        (StoreFPR): Likewise.  Also, don't clobber fpr + 1 for fmt_single
        or fmt_word.
        (COP_LW): Pass fmt_word rather than fmt_uninterpreted to StoreFPR,
        and then set the state to fmt_uninterpreted.
        (COP_SW): Temporarily set the state to fmt_word while calling
        ValueFPR.

Tue Feb  4 16:48:25 1997  Ian Lance Taylor  <ian@cygnus.com>

        * gencode.c (build_instruction): The high order may be set in the
        comparison flags at any ISA level, not just ISA 4.

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.

Fri Jan 31 11:11:45 1997  Ian Lance Taylor  <ian@cygnus.com>

        * configure: Rebuild after change to aclocal.m4.

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.

Wed Jan  8 12:39:03 1997  Jim Wilson  <wilson@cygnus.com>

        * gencode.c (build_instruction): Use BigEndianCPU instead of
        ByteSwapMem.

Thu Jan 02 22:23:04 1997  Mark Alexander  <marka@cygnus.com>

        * interp.c (sim_monitor): Make output to stdout visible in
        wingdb's I/O log window.

Tue Dec 31 07:04:00 1996  Mark Alexander  <marka@cygnus.com>

        * support.h: Undo previous change to SIGTRAP
        and SIGQUIT values.

Mon Dec 30 17:36:06 1996  Ian Lance Taylor  <ian@cygnus.com>

        * interp.c (store_word, load_word): New static functions.
        (mips16_entry): New static function.
        (SignalException): Look for mips16 entry and exit instructions.
        (simulate): Use the correct index when setting fpr_state after
        doing a pending move.

Sun Dec 29 09:37:18 1996  Mark Alexander  <marka@cygnus.com>

        * interp.c: Fix byte-swapping code throughout to work on
        both little- and big-endian hosts.

Sun Dec 29 09:18:32 1996  Mark Alexander  <marka@cygnus.com>

        * support.h: Make definitions of SIGTRAP and SIGQUIT consistent
        with gdb/config/i386/xm-windows.h.

Fri Dec 27 22:48:51 1996  Mark Alexander  <marka@cygnus.com>

        * gencode.c (build_instruction): Work around MSVC++ code gen bug
        that messes up arithmetic shifts.

Fri Dec 20 11:04:05 1996  Stu Grossman  (grossman@critters.cygnus.com)

        * support.h:  Use _WIN32 instead of __WIN32__.  Also add defs for
        SIGTRAP and SIGQUIT for _WIN32.

Thu Dec 19 14:07:27 1996  Ian Lance Taylor  <ian@cygnus.com>

        * gencode.c (build_instruction) [MUL]: Cast operands to word64, to
        force a 64 bit multiplication.
        (build_instruction) [OR]: In mips16 mode, don't do anything if the
        destination register is 0, since that is the default mips16 nop
        instruction.

Mon Dec 16 14:59:38 1996  Ian Lance Taylor  <ian@cygnus.com>

        * gencode.c (MIPS16_DECODE): SWRASP is I8, not RI.
        (build_endian_shift): Don't check proc64.
        (build_instruction): Always set memval to uword64.  Cast op2 to
        uword64 when shifting it left in memory instructions.  Always use
        the same code for stores--don't special case proc64.

        * gencode.c (build_mips16_operands): Fix base PC value for PC
        relative operands.
        (build_instruction): Call JALDELAYSLOT rather than DELAYSLOT for a
        jal instruction.
        * interp.c (simJALDELAYSLOT): Define.
        (JALDELAYSLOT): Define.
        (INDELAYSLOT, INJALDELAYSLOT): Define.
        (simulate): Clear simJALDELAYSLOT when simDELAYSLOT is cleared.

Tue Dec 24 22:11:20 1996  Angela Marie Thomas (angela@cygnus.com)

        * interp.c (sim_open): add flush_cache as a PMON routine
        (sim_monitor): handle flush_cache by ignoring it

Wed Dec 11 13:53:51 1996  Jim Wilson  <wilson@cygnus.com>

        * gencode.c (build_instruction): Use !ByteSwapMem instead of
        BigEndianMem.
        * interp.c (CONFIG, config_EP_{mask,shift,D,DxxDxx, config_BE): Delete.
        (BigEndianMem): Rename to ByteSwapMem and change sense.
        (BigEndianCPU, sim_write, LoadMemory, StoreMemory): Change
        BigEndianMem references to !ByteSwapMem.
        (set_endianness): New function, with prototype.
        (sim_open): Call set_endianness.
        (sim_info): Use simBE instead of BigEndianMem.
        (xfer_direct_word, xfer_direct_long, swap_direct_word,
        swap_direct_long, xfer_big_word, xfer_big_long, xfer_little_word,
        xfer_little_long, swap_word, swap_long): Delete unnecessary MSC_VER
        ifdefs, keeping the prototype declaration.
        (swap_word): Rewrite correctly.
        (ColdReset): Delete references to CONFIG.  Delete endianness related
        code; moved to set_endianness.
        
Tue Dec 10 11:32:04 1996  Jim Wilson  <wilson@cygnus.com>

        * gencode.c (build_instruction, case JUMP): Truncate PC to 32 bits.
        * interp.c (CHECKHILO): Define away.
        (simSIGINT): New macro.
        (membank_size): Increase from 1MB to 2MB.
        (control_c): New function.
        (sim_resume): Rename parameter signal to signal_number.  Add local
        variable prev.  Call signal before and after simulate.
        (sim_stop_reason): Add simSIGINT support.
        (sim_warning, sim_error, dotrace, SignalException): Define as stdarg
        functions always.
        (sim_warning): Delete call to SignalException.  Do call printf_filtered
        if logfh is NULL.
        (AddressTranslation): Add #ifdef DEBUG around debugging message and
        a call to sim_warning.

Wed Nov 27 11:53:50 1996  Ian Lance Taylor  <ian@cygnus.com>

        * gencode.c (process_instructions): If ! proc64, skip DOUBLEWORD
        16 bit instructions.

Tue Nov 26 11:53:12 1996  Ian Lance Taylor  <ian@cygnus.com>

        Add support for mips16 (16 bit MIPS implementation):
        * gencode.c (inst_type): Add mips16 instruction encoding types.
        (GETDATASIZEINSN): Define.
        (MIPS_DECODE): Add REG flag to dsllv, dsrav, and dsrlv.  Add
        jalx.  Add LEFT flag to mfhi and mflo.  Add RIGHT flag to mthi and
        mtlo.
        (MIPS16_DECODE): New table, for mips16 instructions.
        (bitmap_val): New static function.
        (struct mips16_op): Define.
        (mips16_op_table): New table, for mips16 operands.
        (build_mips16_operands): New static function.
        (process_instructions): If PC is odd, decode a mips16
        instruction.  Break out instruction handling into new
        build_instruction function.
        (build_instruction): New static function, broken out of
        process_instructions.  Check modifiers rather than flags for SHIFT
        bit count and m[ft]{hi,lo} direction.
        (usage): Pass program name to fprintf.
        (main): Remove unused variable this_option_optind.  Change
        ``*loptarg++'' to ``loptarg++''.
        (my_strtoul): Parenthesize && within ||.
        * interp.c (LoadMemory): Accept a halfword pAddr if vAddr is odd.
        (simulate): If PC is odd, fetch a 16 bit instruction, and
        increment PC by 2 rather than 4.
        * configure.in: Add case for mips16*-*-*.
        * configure: Rebuild.

Fri Nov 22 08:49:36 1996  Mark Alexander  <marka@cygnus.com>

        * interp.c: Allow -t to enable tracing in standalone simulator.
        Fix garbage output in trace file and error messages.

Wed Nov 20 01:54:37 1996  Doug Evans  <dje@canuck.cygnus.com>

        * Makefile.in: Delete stuff moved to ../common/Make-common.in.
        (SIM_{OBJS,EXTRA_CFLAGS,EXTRA_CLEAN}): Define.
        * configure.in: Simplify using macros in ../common/aclocal.m4.
        * configure: Regenerated.
        * tconfig.in: New file.

Tue Nov 12 13:34:00 1996  Dawn Perchik  <dawn@cygnus.com>

        * interp.c: Fix bugs in 64-bit port.
        Use ansi function declarations for msvc compiler.
        Initialize and test file pointer in trace code.
        Prevent duplicate definition of LAST_EMED_REGNUM.

Tue Oct 15 11:07:06 1996  Mark Alexander  <marka@cygnus.com>

        * interp.c (xfer_big_long): Prevent unwanted sign extension.

Thu Sep 26 17:35:00 1996  James G. Smith  <jsmith@cygnus.co.uk>

        * interp.c (SignalException): Check for explicit terminating
        breakpoint value.
        * gencode.c: Pass instruction value through SignalException()
        calls for Trap, Breakpoint and Syscall.

Thu Sep 26 11:35:17 1996  James G. Smith  <jsmith@cygnus.co.uk>

        * interp.c (SquareRoot): Add HAVE_SQRT check to ensure sqrt() is
        only used on those hosts that provide it.
        * configure.in: Add sqrt() to list of functions to be checked for.
        * config.in: Re-generated.
        * configure: Re-generated.

Fri Sep 20 15:47:12 1996  Ian Lance Taylor  <ian@cygnus.com>

        * gencode.c (process_instructions): Call build_endian_shift when
        expanding STORE RIGHT, to fix swr.
        * support.h (SIGNEXTEND): If the sign bit is not set, explicitly
        clear the high bits.
        * interp.c (Convert): Fix fmt_single to fmt_long to not truncate.
        Fix float to int conversions to produce signed values.

Thu Sep 19 15:34:17 1996  Ian Lance Taylor  <ian@cygnus.com>

        * gencode.c (MIPS_DECODE): Set UNSIGNED for multu instruction.
        (process_instructions): Correct handling of nor instruction.
        Correct shift count for 32 bit shift instructions. Correct sign
        extension for arithmetic shifts to not shift the number of bits in
        the type.  Fix 64 bit multiply high word calculation.  Fix 32 bit
        unsigned multiply.  Fix ldxc1 and friends to use coprocessor 1.
        Fix madd.
        * interp.c (CHECKHILO): Don't set HIACCESS, LOACCESS, or HLPC.
        It's OK to have a mult follow a mult.  What's not OK is to have a
        mult follow an mfhi.
        (Convert): Comment out incorrect rounding code.

Mon Sep 16 11:38:16 1996  James G. Smith  <jsmith@cygnus.co.uk>

        * interp.c (sim_monitor): Improved monitor printf
        simulation. Tidied up simulator warnings, and added "--log" option
        for directing warning message output.
        * gencode.c: Use sim_warning() rather than WARNING macro.

Thu Aug 22 15:03:12 1996  Ian Lance Taylor  <ian@cygnus.com>

        * Makefile.in (gencode): Depend upon gencode.o, getopt.o, and
        getopt1.o, rather than on gencode.c.  Link objects together.
        Don't link against -liberty.
        (gencode.o, getopt.o, getopt1.o): New targets.
        * gencode.c: Include <ctype.h> and "ansidecl.h".
        (AND): Undefine after including "ansidecl.h".
        (ULONG_MAX): Define if not defined.
        (OP_*): Don't define macros; now defined in opcode/mips.h.
        (main): Call my_strtoul rather than strtoul.
        (my_strtoul): New static function.

Wed Jul 17 18:12:38 1996  Stu Grossman  (grossman@critters.cygnus.com)

        * gencode.c (process_instructions):  Generate word64 and uword64
        instead of `long long' and `unsigned long long' data types.
        * interp.c:  #include sysdep.h to get signals, and define default
        for SIGBUS.
        * (Convert):  Work around for Visual-C++ compiler bug with type
        conversion.
        * support.h:  Make things compile under Visual-C++ by using
        __int64 instead of `long long'.  Change many refs to long long
        into word64/uword64 typedefs.

Wed Jun 26 12:24:55 1996  Jason Molenda  (crash@godzilla.cygnus.co.jp)

        * Makefile.in (bindir, libdir, datadir, mandir, infodir, includedir,
        INSTALL_PROGRAM, INSTALL_DATA): Use autoconf-set values.
        (docdir): Removed.
        * configure.in (AC_PREREQ): autoconf 2.5 or higher.
        (AC_PROG_INSTALL): Added.
        (AC_PROG_CC): Moved to before configure.host call.
        * configure: Rebuilt.
        
Wed Jun  5 08:28:13 1996  James G. Smith  <jsmith@cygnus.co.uk>

        * configure.in: Define @SIMCONF@ depending on mips target.
        * configure: Rebuild.
        * Makefile.in (run): Add @SIMCONF@ to control simulator
        construction.
        * gencode.c: Change LOADDRMASK to 64bit memory model only.
        * interp.c: Remove some debugging, provide more detailed error
        messages, update memory accesses to use LOADDRMASK.
        
Mon Jun  3 11:55:03 1996  Ian Lance Taylor  <ian@cygnus.com>

        * configure.in: Add calls to AC_CONFIG_HEADER, AC_CHECK_HEADERS,
        AC_CHECK_LIB, and AC_CHECK_FUNCS.  Change AC_OUTPUT to set
        stamp-h.
        * configure: Rebuild.
        * config.in: New file, generated by autoheader.
        * interp.c: Include "config.h".  Include <stdlib.h>, <string.h>,
        and <strings.h> if they exist.  Replace #ifdef sun with #ifdef
        HAVE_ANINT and HAVE_AINT, as appropriate.
        * Makefile.in (run): Use @LIBS@ rather than -lm.
        (interp.o): Depend upon config.h.
        (Makefile): Just rebuild Makefile.
        (clean): Remove stamp-h.
        (mostlyclean): Make the same as clean, not as distclean.
        (config.h, stamp-h): New targets.

Fri May 10 00:41:17 1996  James G. Smith  <jsmith@cygnus.co.uk>

        * interp.c (ColdReset): Fix boolean test. Make all simulator
        globals static.

Wed May  8 15:12:58 1996  James G. Smith  <jsmith@cygnus.co.uk>

        * interp.c (xfer_direct_word, xfer_direct_long,
        swap_direct_word, swap_direct_long, xfer_big_word,
        xfer_big_long, xfer_little_word, xfer_little_long,
        swap_word,swap_long): Added.
        * interp.c (ColdReset): Provide function indirection to
        host<->simulated_target transfer routines.
        * interp.c (sim_store_register, sim_fetch_register): Updated to
        make use of indirected transfer routines.

Fri Apr 19 15:48:24 1996  James G. Smith  <jsmith@cygnus.co.uk>

        * gencode.c (process_instructions): Ensure FP ABS instruction
        recognised.
        * interp.c (AbsoluteValue): Add routine. Also provide simple PMON
        system call support.

Wed Apr 10 09:51:38 1996  James G. Smith  <jsmith@cygnus.co.uk>

        * interp.c (sim_do_command): Complain if callback structure not
        initialised.

Thu Mar 28 13:50:51 1996  James G. Smith  <jsmith@cygnus.co.uk>

        * interp.c (Convert): Provide round-to-nearest and round-to-zero
        support for Sun hosts.
        * Makefile.in (gencode): Ensure the host compiler and libraries
        used for cross-hosted build.

Wed Mar 27 14:42:12 1996  James G. Smith  <jsmith@cygnus.co.uk>

        * interp.c, gencode.c: Some more (TODO) tidying.

Thu Mar  7 11:19:33 1996  James G. Smith  <jsmith@cygnus.co.uk>

        * gencode.c, interp.c: Replaced explicit long long references with
        WORD64HI, WORD64LO, SET64HI and SET64LO macro calls.
        * support.h (SET64LO, SET64HI): Macros added.

Wed Feb 21 12:16:21 1996  Ian Lance Taylor  <ian@cygnus.com>

        * configure: Regenerate with autoconf 2.7.

Tue Jan 30 08:48:18 1996  Fred Fish  <fnf@cygnus.com>

        * interp.c (LoadMemory): Enclose text following #endif in /* */.
        * support.h: Remove superfluous "1" from #if.
        * support.h (CHECKSIM): Remove stray 'a' at end of line.

Mon Dec  4 11:44:40 1995  Jamie Smith  <jsmith@cygnus.com>

        * interp.c (StoreFPR): Control UndefinedResult() call on
        WARN_RESULT manifest.

Fri Dec  1 16:37:19 1995  James G. Smith  <jsmith@cygnus.co.uk>

        * gencode.c: Tidied instruction decoding, and added FP instruction
        support.

        * interp.c: Added dineroIII, and BSD profiling support. Also
        run-time FP handling.

Sun Oct 22 00:57:18 1995  James G. Smith  <jsmith@pasanda.cygnus.co.uk>

        * Changelog, Makefile.in, README.Cygnus, configure, configure.in,
        gencode.c, interp.c, support.h: created.