Fix problems in setting the carry bit

[thirdparty/binutils-gdb.git] / sim / d10v / ChangeLog

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.