[platform/upstream/binutils.git] / sim / d10v / ChangeLog

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

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

        * simops.c (OP_5F00): Remove old traps 1-3.  Make trap 15 the same
        as trap 0, which will be deprecated.

Thu Mar 13 12:41:20 1997  Doug Evans  <dje@canuck.cygnus.com>

        * interp.c: Delete redundant prototypes of sim_foo fns.
        (sim_open): New SIM_DESC result.  Argument is now in argv form.
        (other sim_*): New SIM_DESC argument.

Thu Mar 13 10:29:04 1997  Michael Meissner  <meissner@cygnus.com>

        * simops.c (trace_{input,output}_func): Call flush_stdout from the
        callback functions.
        (OP_5F00): Ditto.
        (OP_6{4,6,C,A}01): Test for post decrement on the stack pointer.
        (OP_{1200,1000000,201,5FE0,1003,17001002}): Fix problems in
        setting the carry bit after an add or a subtract.

Wed Feb 12 16:04:15 1997  Michael Meissner  <meissner@cygnus.com>

        * simops.c (OP_{1403,15002A02,3{0,4}0{0,1}}): Only use the bottom
        40 bits of accumulators.  Sign/zero extend as appropriate.

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

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

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

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

Fri Dec 27 22:54:05 1996  Angela Marie Thomas (angela@cygnus.com)

        * gencode.c: patch to not #include "d10v_sim.h" which
        unecessarily includes bfd.h and causes wingdb configure
        to fail.

Mon Dec 16 13:39:03 1996  Martin M. Hunt  <hunt@pizza.cygnus.com>

        * interp.c (xfer_mem): Change unified memory to 0x0.

Thu Nov 28 20:42:56 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * simops.c (OP_3E01): Fix tracing information.
        (OP_300{0,1}): Do not propigate sign.

Mon Nov 25 19:47:40 1996  Doug Evans  <dje@canuck.cygnus.com>

        * config.in (WORDS_BIGENDIAN): Add.
        * configure: Regenerated.
        * d10v_sim.h: #include "config.h"

Sat Nov 23 09:34:50 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * gencode.c (write_opcodes): Eliminate warnings when generated
        table.c is compiled.

Wed Nov 20 19:41:40 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * interp.c (sim_open): Cast result of calloc, and make sure NULL
        was not returned.
        (dmem_addr): If address is illegal or in I/O space, signal a bus
        error.
        (pc_addr): Signal bus error, not illegal instruction for bogus
        pc.

Wed Nov 20 01:23:03 1996  Doug Evans  <dje@canuck.cygnus.com>

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

Fri Nov  8 16:19:55 1996  Martin M. Hunt  <hunt@pizza.cygnus.com>

        * d10v-sim.h (simops): Add flag is_long.
        (State): Add pc_changed.  Instructions which update the PC should
        use the JMP macro which sets this.
        (JMP): New macro.  Sets the PC and the pc_changed flag.

        * gencode.c (write_opcodes): Add is_long field.
        
        * interp.c (lookup_hash): If we blindly apply a short opcode's mask
        to a long opcode we could get a false match.  Check the opcode size.
        (hash): Add a size field to the hash table.
        (sim_open): Initialize size field in hash table.
        (sim_resume): Change to logic for setting the PC.  Used to increment the
        PC if it had not been changed.  This didn't allow single-instruction loops.
        Now checks the flag State.pc_changed.  Also now stops when ^C is received.
        (dmem_addr): Fix translation of data segments to unified memory.
        (sim_ctrl_c): New function.  When ^C is received, set stop_simulator flag.

        * simops.c: Changed all branch and jump instructions to use new JMP macro.
        (OP_20000000): Corrected trace information to show this is a ldi.l, not
        a ldi.s instruction.
        
Thu Oct 31 19:13:55 1996  Martin M. Hunt  <hunt@pizza.cygnus.com>

        * interp.c (sim_fetch_register, sim_store_register): Fix bug where
        updating the accumulators was overwriting other parts of the global
        State variable.

Wed Oct 30 17:35:14 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * interp.c (bfd.h) Don't include it here any more.
        (text{,_start,_end}): Move here from simops.c and make extern.
        (decode_pc): New function to return the PC as an address that the
        debugger can use.
        (dmem_addr): Print decoded PC in error message.
        (pc_addr): Ditto.

        * simops.c (bfd.h) Don't include it here any more.
        (text{,_start,_end}): Move to simops.c.
        (trace_input_func): Move decoding of PC, and looking up .text
        start to decode_pc.

        * d10v_sim.h (bfd.h): Include it here.
        (text{,_start,_end}): Add external declarations.
        (exec_bfd): Ditto.
        (decode_pc): Ditto.

Tue Oct 29 12:13:52 1996  Martin M. Hunt  <hunt@pizza.cygnus.com>

        * interp.c (sim_size): Now allocates unified memory for imap segments
        0,1,2, and 127. Initializes imap0 and imap1 to 0x1000.  Initializes dmap to 0.
        (sim_write): Just call xfer_mem().
        (sim_read): Just call xfer_mem().
        (xfer_mem): New function. Does appropriate memory mapping and copies bytes.
        (dmem_addr): New function. Reads dmap register and translates data
        addresses to local addresses.
        (pc_addr): New function. Reads imap register and computes local address
        corresponding to contents of the PC.
        (sim_resume): Change to use pc_addr().
        (sim_create_inferior): Change reinitialization code. Also reinitializes
        imap[01] and dmap.
        (sim_fetch_register): Add fake registers 32,33,34 for imap0, imap1, and dmap.
        (sim_store_register): Add fake registers 32,33,34 for imap0, imap1, and dmap.

        * simops.c (MEMPTR): Redefine to use dmem_addr().
        (OP_5F00): Replace references to STate.imem with dmem_addr().
        
        * d10v-sim.h (State): Remove mem_min and mem_max. Add umem[128].
        (RB,SW,RW,SLW,RLW): Redefine to use dmem_addr().
        (IMAP0,IMAP1,DMAP,SET_IMAP,SET_IMAP1,SET_DMAP): Define.
        
Tue Oct 22 15:22:33 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * d10v_sim.h (_ins_type): Reorganize, so that we can provide
        better statistics, like not counting NOPS as parallel
        instructions, and printing total cycles.
        (ins_type_counters): Make unsigned long.
        (left_nops,right_nops): Fold into ins_type_counters.

        * simops.c (trace_input_func): Print new instruction types.
        Handle OP_R2R3 as input types.
        (OP_{38000000,7000}): Correctly sign extend bytes.
        (OP_5E00): Don't count NOPs as parallel instructions.
        (OP_460B): Remove unused variable.
        (OP_5F00): Ditto.

        * interp.c (ins_type_counters): Make unsigned long.
        (left_nops,right_nops): Delete.
        (most functions): Add prototypes.
        (INLINE): If GCC and optimize define as __inline__.
        ({,lookup_}hash,get_operands): Declare as INLINE.
        (do_parallel): Count conditional operations.
        (add_commas): New function, to add commas every 3 digits.
        (sim_size): Call add_commas to print numbers.
        (sim_{open,resume}): Delete unused variables.
        (sim_info): Provide better statistics.
        (sim_read): Add int return type.

Mon Oct 21 16:16:26 1996  Martin M. Hunt  <hunt@pizza.cygnus.com>

        * interp.c (sim_resume): Change the way single-stepping and exceptions
        are handled so single-stepping works again.

Thu Oct 17 12:24:16 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * endian.c: Optimize simulated loads/stores on x86, AIX, and big
        endian hosts.

        * configure.in (--enable-sim-bswap): New switch to enable using
        the BSWAP instruction on x86's.
        * configure: Regenerate.

        * Makefile.in ({SWAP,CONFIG}_CFLAGS): Add --enable-sim-bswap
        support.

Wed Oct 16 13:50:06 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * endian.c: New file.  Move endian functions here from interp.c.
        Optimize code, and make it work as either inline functions or as a
        separate file.

        * interp.c: Move endian functions from here to endian.c.

        * Makefile.in (INCLUDE): Add endian.c.
        (run,libsim.a): Add dependency on endian.o.
        (endian.o): Add dependency.

        * d10v_sim.h (read/write support): Always go through the machine
        independent endian functions.  If compiling with GCC and
        optimizing, include endian.c so the endian functions are inlined.

        * simops.c (OP_5F00): Correct tracing of accumulators.  

Tue Oct 15 10:57:50 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * simops.c (OP_5F00): Add support for getpid, kill system calls.

        * interp.c (do_{2_short,parallel}): If an exception is raised,
        don't execute the second instruction.

Sat Oct 12 22:17:43 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * simops.c (OP_{31000000,6601,6201,6200}): Store address in a
        temporary in case the register is overriden when loading.
        (OP_6200): Output type is OP_DREG for tracing.

Fri Oct  4 23:46:18 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * d10v_sim.h (struct _state): Add mem_{min,max} fields.

        * interp.c (sim_size): Initialize mem_{min,max} fields.
        (sim_write): Update mem_{min,max} fields.
        (sim_resume): If PC is not in the minimum/maximum memory range,
        abort.
        (sim_create_inferior): Preserve mem_{min,max} fields.

Fri Sep 27 13:11:58 1996  Mark Alexander  <marka@cygnus.com>

        * simops.c (OP_5F00): Add support for time() system call.

Wed Sep 25 16:31:41 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * simops.c (OP_{6E01,6A01,6E1F,6A00}): Print both words being
        stored if tracing.
        (OP_5F00,trace_{in,out}put_func): Add finer grain tracing for
        system calls.

Mon Sep 23 17:55:30 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * simops.c (op_types): Add OP_{CONSTANT8,R2,R3}.
        (trace_input_func): Add support for  OP_{CONSTANT8,R2,R3}.
        (OP_{4900,24800000,4800,4A00,4B00,4D00,4C00}): Add OP_R2 and OP_R3
        to call/subroutine returns to trace the first two arguments and
        the return value.  For small jumps, use CONSTANT8, not CONSTANT16.

Fri Sep 20 15:36:45 1996  Martin M. Hunt  <hunt@pizza.cygnus.com>

        * interp.c (sim_create_inferior): Reinitialize State every time 
        sim_create_inferior() is called.

Thu Sep 19 21:38:20 1996  Michael Meissner  <meissner@wogglebug.ziplink.net>

        * simops.c (OP_{401,2000000,601,3000000,23000000}): Get sign right
        on comparisons.
        (OP_401): Fix tracing information.

Thu Sep 19 10:30:22 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * simops.c (SIZE_{PC,LINE_NUMBER}): New default sizes for output.
        (trace_input_func): Use them.
        (trace_input_func): Make sure there is a trailing space after the
        instruction.
        (OP_6200): Fix tracing info.

        * Makefile.in (run): Add dependencies on libbfd.a and
        libiberity.a.

Wed Sep 18 09:13:25 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * d10v_sim.h (DEBUG_INSTRUCTION): New debug value to include line
        numbers and function names in debug trace.
        (DEBUG): If not defined, set to DEBUG_TRACE, DEBUG_VALUES, and
        DEBUG_LINE_NUMBER. 
        (SIG_D10V_{STOP,EXIT}): Values to represent the stop instruction
        and exit system call trap being executed.

        * interp.c (sim_stop_reason): Set exit code correctly for stop
        instruction and exit system call trap.

        * configure.in (--enable-sim-cflags): Remove trace case.
        (--enable-sim-debug): New switch to set the debug values.
        * configure: Regenerate.

        * simops.c (trace_{input,output}_func): Rename from
        trace_{input,output}.
        (trace_{input,output}): Call trace_{input,output}_func if
        d10v_debug is non-zero.
        (SIZE_INSTRUCTION): Cut down to 8.
        (SIZE_OPERANDS): Cut down to 18.
        (SIZE_LOCATION): New value for size of line number, function name
        field.
        (init_text_p,text{,_start,_end}): New static variables for
        printing line number and function name.
        (exec_bfd): New external that run.c sets.
        (trace_input_func): Print line number and function name if
        available and if desired.
        (OP_4E09): Don't print out DBT message.
        (OP_5FE0): Set exception field to SIG_D10V_STOP.
        (OP_5F00): Set exception field to SIG_D10V_EXIT.        

Sat Sep 14 22:18:43 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * interp.c (do_2_short): If the instruction encodes jump->ins,
        don't do the second instruction if the jump succeeds.

Fri Sep 13 22:35:19 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * simops.c (OP_5F00): Use unknown traps to print all GPRs,
        accumulators, PC, and F0/F1/C flags.

Thu Sep 12 12:50:11 1996  Mark Alexander  <marka@cygnus.com>

        * simops.c (OP_5F00): Fix problems with system calls.

Thu Sep 12 12:19:28 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * simops.c (OP_5F00): Correct tracing information for trap.

Wed Sep 11 18:55:50 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * Makefile.in (CSEARCH): Correctly find opcodes directory.

Mon Sep  9 13:27:26 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * simops.c (trace_output): Properly align accumulator output.
        (OP_3{0,2,4}00): Properly parenthesize test expression.  Add error
        if shift count is too high.
        (OP_4E{00,02,04,20,22,40,42}): Make tests agree with book.
        (OP_4E09): Make cpfg properly trace the input flags.
        (op_types): Add OP_FLAG_OUTPUT.
        (trace_{input,output}): Support OP_FLAG_OUTPUT.
        (OP_31000000): This ld2w varient is a 16-bit memory reference, not
        an 8-bit memory reference instruction for tracing purposes.
        (OP_201): Addi needs to set the carry.

Fri Sep  6 17:56:17 1996  Martin M. Hunt  <hunt@pizza.cygnus.com>

        * simops.c (OP_2600, OP_2601): Changed min and max comparisons
        to use signed register values.

Wed Sep  4 11:35:17 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * d10v_sim.h (DEBUG_*): Add bit flags for controlling debug
        output.
        (_ins_type): New enumeration to specify which container an
        instruction is in, and whether it is part of a parallel operation.
        (_state): Add ins_type field.
        ({,u}int{8,16,32,64}): Use limits.h to size the appropriate types.
        (ins_type_counters): Counters for the various instruction types.
        ({left,right}_nops): Counters for the number of nops in each
        container.
        (d10v_debug): New variable to indicate whether debugging is turned
        on.

        * simops.c: (all functions): Change all #ifdef DEBUG code so that
        the input and output values can be traced, along with the
        instruction type.  Make the -t option enable tracing.
        (all functions): Change printf calls to use the printf_filtered
        function in the callback table.

        * interp.c (_leftright): New enumeration to say whether 2 short
        instructions are done left first or right first.
        (do_{long,2_short,parallel}): Indicate in the machine state which
        type of instruction this is.  Count each of the types of
        instructions executed.
        (sim_size): Only print the memory sizes if DEBUG_MEMSIZE debug
        flag is set.
        (sim_resume): Pass left/right indication to do_2_short.
        (all functions): Change printf calls to use the printf_filtered
        function in the callback table.
        (sim_trace): Turn on debug flag if DEBUG was defined, and call
        sim_resume.
        (sim_info): Print out statistics on instructions.
        (sim_{trace,create_inferior}): Eliminate extraneous output unless
        debugging.
        (sim_open): If args == -t and DEBUG was defined, set d10v_debug.
        Only initialize the hash table the first time sim_open is called.

        * Makefile.in: Make objects depend on d10v_sim.h.
        ({,SIM_}CFLAGS): Include configure dependent switches.  Setting
        CFLAGS does not override host/target defines or SIM_CFLAGS.
        (CC_FOR_BUILD,gencode): Use CC_FOR_BUILD to compile gencode.
        (run): By default, the math library is not needed to be linked
        in.
        ({BFD,LIBIBERTY}_LIB): Define as variables so they can be
        overridden.
        (VPATH): Don't set to anything but @srcdir@ to work with non-GNU
        makes.
        ({run,callback}.o): Provide explicit paths to their appropriate
        source directories.
        (gencode{,.o},d10v-opc.o): Split compilation into creating object
        and linking.  Instead of linking in libopcodes.a, just compile
        d10v-opc.o directly to handle canadian cross.
        (CSEARCH): Add opcodes directory.

        * configure.in (--enable-sim-cflags): New switch to allow user to
        set the defaults.
        (CC_FOR_BUILD): Deal with canadian crosses.
        * configure: Regenerate.

Wed Sep 04 04:45:34 1996  Mark Alexander  <marka@cygnus.com>

        * simops.c: Include correct syscall.h for d10v, not host's.
        Fix #ifdef SYS_stat.

Tue Sep  3 14:00:04 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

        * simops.c (OP_5F00): Wrap all SYS_xxx traps with #ifdef.
        Add trap 2 to be printf and trap 3 to be putchar.

Wed Aug 28 21:42:34 1996  Mark Alexander  <marka@cygnus.com>

        * Makefile.in, d10v_sim.h, interp.c, simops.c: Add support
        for low-level system calls.

Wed Aug 28 17:33:19 1996  Martin M. Hunt  <hunt@pizza.cygnus.com>

        * Makefile.in, d10v_sim.h, interp.c: Fix byte-order problems.

Mon Aug 26 18:30:28 1996  Martin M. Hunt  <hunt@pizza.cygnus.com>

        * d10v_sim.h (SEXT32): Added.
        * interp.c: Commented out printfs.
        * simops.c:  Fixed error in sb and st2w. 

Thu Aug 15 13:30:03 1996  Martin M. Hunt  <hunt@pizza.cygnus.com>

        * Makefile.in, d10v_sim.h, interp.c, simops.c: Added remaining
        DSP instructions.  Added modulo addressing.

Sun Aug 11 12:57:15 1996  Martin M. Hunt  <hunt@pizza.cygnus.com>

        * Makefile.in, d10v_sim.h, interp.c, simops.c: Snapshot.

Fri Aug  2 17:44:24 1996  Martin M. Hunt  <hunt@pizza.cygnus.com>

        * d10v_sim.h, simops.c: Snapshot.

Thu Aug  1 17:05:24 1996  Martin M. Hunt  <hunt@pizza.cygnus.com>

        * ChangeLog, Makefile.in, configure, configure.in, d10v_sim.h, 
        gencode.c, interp.c, simops.c: Created.