sim/m68hc11/ChangeLog

   1 2002-08-13  Stephane Carrez  <Stephane.Carrez@nerim.fr>
   2
   3         * interp.c (sim_hw_configure): Connect port-X to cpu-write-port.
   4         * dv-m68hc11.c (m68hc11cpu_ports): Add cpu-write-port input.
   5         (m68hc11cpu_port_event): Handle CPU_WRITE_PORT event.
   6
   7 2002-08-13  Marko Kohtala  <marko.kohtala@luukku.com>
   8
   9         * dv-m68hc11.c (m68hc11cpu_io_write): Fix to update IO mapping
  10         when IO mapping changed, not when internal RAM mapping is changed.
  11
  12 2002-08-13  Stephane Carrez  <stcarrez@nerim.fr>
  13
  14         * m68hc11_sim.c (cpu_special): Handle call and rtc instructions.
  15         * sim-main.h (M6812_CALL_INDIRECT): Add to enum.
  16         (m6811_regs): Add page register.
  17         (cpu_set_page, cpu_get_page): New macros.
  18         (phys_to_virt): New function.
  19         (cpu_get_indexed_operand_addr, cpu_return): Declare.
  20         * gencode.c: Identify indirect addressing mode for call and fix daa.
  21         (gen_function_entry): New param to tell if src8/dst8 locals are
  22         necessary.
  23         (gen_interpreter): Use it to avoid generation of unused variables.
  24         * interp.c (sim_fetch_register): Allow to read page register; page
  25         register, A, B and CCR are only 1 byte wide.
  26         (sim_store_register): Likewise for writing.
  27
  28 2002-06-16  Andrew Cagney  <ac131313@redhat.com>
  29
  30         * configure: Regenerated to track ../common/aclocal.m4 changes.
  31
  32 2002-06-09  Andrew Cagney  <cagney@redhat.com>
  33
  34         * Makefile.in (INCLUDE): Update path to callback.h.
  35         * sim-main.h: Include "gdb/callback.h" and "gdb/remote-sim.h".
  36
  37 2002-03-07  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
  38
  39         * m68hc11_sim.c (cpu_move8): Call sim_engine_abort in default case.
  40         (cpu_move16): Likewise.
  41         (sim_memory_error): Use sim_io_printf.
  42         (cpu_option_handler): Fix compilation warning.
  43         * interp.c (sim_hw_configure): Fix compilation warning;
  44         remove m68hc12sio@2 device.
  45         (sim_open): Likewise.
  46         * dv-m68hc11tim.c (m68hc11tim_port_event): Fix clear of TFLG2
  47         flags when reset.
  48         (cycle_to_string): Improve convertion of cpu cycle number.
  49         (m68hc11tim_info): Print info about PACNT.
  50         (m68hc11tim_io_write_buffer): Fix clearing of TFLG2; handle
  51         TCTL1 and TCTL2 registers.
  52         * dv-m68hc11.c (m68hc11_info): Print 6811 current running mode.
  53
  54 2002-03-07  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
  55
  56         * interp.c (sim_hw_configure): Save the HW cpu pointer in the
  57         cpu struct.
  58         (sim_hw_configure): Connect the capture input/output events.
  59         * sim-main.h (_sim_cpu): New member hw_cpu.
  60         (m68hc11cpu_set_oscillator): Declare.
  61         (m68hc11cpu_clear_oscillator): Declare.
  62         (m68hc11cpu_set_port): Declare.
  63         * dv-m68hc11.c (m68hc11_options): New for oscillator commands.
  64         (m68hc11cpu_ports): New input ports and output ports to reflect
  65         the HC11 IOs.
  66         (m68hc11_delete): Cleanup any running oscillator.
  67         (attach_m68hc11_regs): Create the input oscillators.
  68         (make_oscillator): New function.
  69         (find_oscillator): New function.
  70         (oscillator_handler): New function.
  71         (reset_oscillators): New function.
  72         (m68hc11cpu_port_event): Handle the new input ports.
  73         (m68hc11cpu_set_oscillator): New function.
  74         (m68hc11cpu_clear_oscillator): New function.
  75         (get_frequency): New function.
  76         (m68hc11_option_handler): New function.
  77         (m68hc11cpu_set_port): New function.
  78         (m68hc11cpu_io_write): Post the port output events.
  79         * dv-m68hc11spi.c (set_bit_port): Use m68hc11cpu_set_port to set
  80         the output port value.
  81         * dv-m68hc11tim.c (m68hc11tim_port_event): Handle CAPTURE event
  82         by latching the TCNT value in the register.
  83
  84 2002-03-07  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
  85
  86         * sim-main.h (cpu_frame, cpu_frame_list): Remove.
  87         (cpu_frame_reg, cpu_print_frame): Remove.
  88         (cpu_m68hc11_push_uint8, cpu_m68hc11_pop_uint8): Cleanup.
  89         (cpu_m68hc11_push_uint16, cpu_m68hc11_pop_uint16): Likewise.
  90         (cpu_m68hc12_push_uint8, cpu_m68hc12_push_uint16): Likewise.
  91         (cpu_m68hc12_pop_uint8, cpu_m68hc12_pop_uint16): Likewise.
  92         * m68hc11_sim.c (cpu_find_frame): Remove.
  93         (cpu_create_frame_list): Remove.
  94         (cpu_remove_frame_list, cpu_create_frame, cpu_free_frame): Remove.
  95         (cpu_frame_reg, cpu_print_frame, cpu_update_frame): Remove.
  96         (cpu_call): Cleanup to remove #if HAVE_FRAME and calls to the above.
  97         (cpu_update_frame): Likewise.
  98         (cpu_return): Likewise.
  99         (cpu_reset): Likewise.
 100         (cpu_initialize): Likewise.
 101         * interp.c (sim_do_command): Remove call to cpu_print_frame.
 102
 103 2002-03-07  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 104
 105         * interrupts.c (interrupts_reset): New function, setup interrupt
 106         vector address according to cpu mode.
 107         (interrupts_initialize): Move reset portion to the above.
 108         (interrupt_names): New table to give a name to interrupts.
 109         (idefs): Handle pulse accumulator interrupts.
 110         (interrupts_info): Print the interrupt history.
 111         (interrupt_option_handler): New function.
 112         (interrupt_options): New table of options.
 113         (interrupts_update_pending): Keep track of when interrupts are
 114         raised and implement breakpoint-on-raise-interrupt.
 115         (interrupts_process): Keep track of when interrupts are taken
 116         and implement breakpoint-on-interrupt.
 117         * interrupts.h (struct interrupt_history): Define.
 118         (struct interrupt): Keep track of the interrupt history.
 119         (interrupts_reset): Declare.
 120         (interrupts_initialize): Update prototype.
 121         * m68hc11_sim.c (cpu_reset): Reset interrupts.
 122         (cpu_initialize): Cleanup.
 123
 124 2001-07-28  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 125
 126         * dv-m68hc11eepr.c (m68hc11eepr_info): Fix print of current write
 127         address.
 128         (m68hc11eepr_port_event): Fix detach/attach logic.
 129
 130 2001-07-22  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 131
 132         * Makefile.in (SIM_OBJS): Remove sim-resume.o
 133         * interp.c (sim_resume): New function from sim-resume.c, install
 134         the stepping event after having processed the pending ticks.
 135         (has_stepped): Likewise.
 136         (sim_info): Produce an output only if verbose or STATE_VERBOSE_P.
 137
 138 2001-07-10  Andrew Cagney  <ac131313@redhat.com>
 139
 140         * Makefile.in (gencode): Provide explicit path to gencode.c.
 141
 142 2001-05-20  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 143
 144         * Makefile.in (M68HC11_OBJS): Add m68hc12int.o.
 145         (m68hc12int.c): Generate using gencode -m6812.
 146         (m68hc11int.c): Likewise with -m6811.
 147
 148         * gencode.c (m6811_opcode_patterns): New patterns for 68HC12.
 149         (m6811_page1_opcodes): Remove duplicate entries.
 150         (m6811_page2_opcodes): Likewise.
 151         (m6811_page3_opcodes): Likewise.
 152         (m6811_page4_opcodes): Likewise.
 153         (m6812_page1_opcodes): New table for 68HC12 instructions.
 154         (m6812_page2_opcodes): Likewise.
 155         (gen_fetch_operands): New modes [] and &[] for 68HC12 operands.
 156         (gen_save_result): Likewise.
 157         (gen_interpreter_for_table): Handle 68HC11 and 68HC12 opcodes.
 158         (cmp_opcode): New function for opcode comparision.
 159         (prepare_table): Sort the opcodes.
 160         (gen_interpreter): Prepare all the tables and generate either
 161         a 68HC11 or a 68HC12 simulator.
 162         (main): New options -m6811 and -m6812.
 163
 164         * m68hc11_sim.c (cpu_single_step): Use pointer to cpu interpretor.
 165         (cpu_special): Simulation of some 68HC12 instructions.
 166         (cpu_exg): New function.
 167         (cpu_dbcc): Likewise.
 168         (cpu_fetch_relbranch16): Likewise.
 169         (cpu_push_all): Push according to 68HC11 or 68HC12.
 170         (cpu_move16): Likewise.
 171         (cpu_move8): Likewise.
 172         (cpu_get_indexed_operand16): Likewise.
 173         (cpu_get_indexed_operand8): Likewise.
 174         (cpu_get_indexed_operand_addr): Likewise.
 175         (cpu_set_reg, cpu_set_dst_reg, cpu_get_src_reg, cpu_get_reg): Likewise.
 176         (cpu_reset): Setup INIT register according to architecture.
 177
 178         * sim-main.h (M6811_Special): Add 68HC12 specific instructions.
 179         (_sim_cpu): Keep track of the cpu being simulated.
 180         (cpu_get_tmp3, cpu_get_tmp2, cpu_set_tmp3, cpu_set_tmp2): New.
 181         (cpu_m68hc11_push_uintxx): Rename of cpu_push_uintxx.
 182         (cpu_m68hc11_pop_uint8): Likewise.
 183         (cpu_m68hc12_push_uintxx): New functions for 68HC12.
 184         (cpu_m68hc12_pop_uintxx): Likewise.
 185         (cpu_exg, cpu_dbcc, cpu_move8, cpu_move16): Likewise,
 186         (cpu_fetch_relbranch16): Likewise.
 187         (cpu_interp_m6811): Rename of cpu_interp.
 188         (cpu_interp_m6812): New function.
 189         * interp.c (free_state): New function.
 190         (dev_list_68hc12): New table.
 191         (sim_board_reset): Reset depending on the cpu (HC11 or HC12).
 192         (sim_hw_configure): New function.
 193         (sim_prepare_for_program): New function.
 194         (sim_open): Use above new functions.
 195         (sim_close): Call free_state().
 196         (sim_info): Print info according to cpu.
 197         (sim_create_inferior): Use sim_prepare_for_program.
 198         (sim_do_command): Configure the hardware after a change of the
 199         architecture.
 200
 201 2001-05-20  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 202
 203         * dv-m68hc11sio.c (m68hc11sio_tx_poll): Always check for
 204         pending interrupts.
 205         * interrupts.c (interrupts_process): Keep track of the last number
 206         of masked insn cycles.
 207         (interrupts_initialize): Clear last number of masked insn cycles.
 208         (interrupts_info): Report them.
 209         (interrupts_update_pending): Compute clear and set masks of
 210         interrupts and clear the interrupt bits before setting them
 211         (due to SCI interrupt sharing).
 212         * interrupts.h (struct interrupts): New members last_mask_cycles
 213         and xirq_last_mask_cycles.
 214
 215 2000-11-26  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 216
 217         * dv-m68hc11.c (m68hc11cpu_io_read_buffer): Use attach_size
 218         instead of a hard-coded value.
 219         (m68hc11cpu_io_write_buffer): Likewise.
 220         (dv_m68hc11_descriptor): Define a 68hc12 device.
 221         * dv-m68hc11eepr.c (dv_m68hc11eepr_descriptor): Likewise.
 222         * dv-m68hc11tim.c (dv_m68hc11tim_descriptor): Likewise.
 223         * dv-m68hc11spi.c (dv_m68hc11spi_descriptor): Likewise.
 224         * dv-m68hc11sio.c (dv_m68hc11sio_descriptor): Likewise.
 225
 226 2000-11-22  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 227
 228         * dv-m68hc11.c (attach_m68hc11_regs): Register a delete handler.
 229         (m68hc11cpu_delete): Delete handler to detach the address space.
 230
 231 2000-11-24  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 232
 233         * dv-m68hc11eepr.c (attach_m68hc11eepr_regs): Use hw_malloc.
 234         * dv-nvram.c (attach_nvram_regs): Use hw_free and hw_malloc
 235         instead of free and malloc.
 236
 237 2000-09-11  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 238
 239         * Makefile.in: Was missing from initial patch.
 240
 241 2000-09-10  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 242
 243         * interp.c (sim_store_register): Remove soft register hack.
 244         (sim_fetch_register): Likewise.
 245         (sim_create_inferior): Likewise.
 246         * sim-main.h: Likewise.
 247
 248 2000-09-10  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 249
 250         * interrupts.c (interrupts_update_pending): Clear the mask of
 251         pending interrupts here.
 252         (interrupts_get_current): Don't clear the mask of pending interrupts.
 253
 254 2000-09-10  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 255
 256         * sim-main.h: Define cycle_to_string.
 257         * dv-m68hc11tim.c (cycle_to_string): New function to translate
 258         the cpu cycle into some formatted time string.
 259         (m68hc11tim_print_timer): Use it.
 260         * dv-m68hc11sio.c (m68hc11sio_info): Use cycle_to_string.
 261         * dv-m68hc11spi.c (m68hc11spi_info): Likewise.
 262         * interrupts.c (interrupts_info): Likewise.
 263         * m68hc11_sim.c (cpu_info): Likewise.
 264
 265 2000-09-06  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 266
 267         * dv-m68hc11tim.c (m68hc11tim_timer_event): Compute the overflow
 268         interrupt and compare events accurately.  Take into account the
 269         pending ticks not processed by the simulator yet (introduced a shift).
 270         (m68hc11_port_event): Reset the timer interrupt delays.
 271         (m68hc11tim_io_read_buffer): Be able to read several bytes.
 272         (m68hc11tim_io_write_buffer): Likewise for write.
 273         (m68hc11tim_io_write_buffer): Recompute the timer overflow interrupt.
 274
 275 2000-09-06  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 276
 277         * dv-m68hc11spi.c (m68hc11spi_io_read_buffer): Clear the interrupts.
 278         (m68hc11spi_io_write_buffer): Likewise and fix the spi frame.
 279         (m68hc11spi_info): Clarify the status report
 280         of the SPI when a byte is being sent.
 281         (m68hc11spi_clock): Fix the spi send frame.
 282
 283 2000-08-11  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 284
 285         * sim-main.h (m68hc11_map_level): Define level of address mappings.
 286         * dv-m68hc11eepr.c (struct m68hc11eepr ): New flag to indicate
 287         whether the eeprom is currently mapped or not.
 288         (m68hc11eepr_port_event): Use the flag to see if we must unmap
 289         or map the eeprom.  Update the flag to reflect the current state.
 290         Use M6811_EEPROM_LEVEL when mapping the eeprom.
 291         (m68hc11eepr_finish): Remove overlap hack.
 292         (attach_m68hc11eepr_regs): Use M6811_IO_LEVEL when mapping the
 293         config and control registers.
 294         * dv-m68hc11.c (m68hc11cpu_finish): Remove overlap hack.
 295         (attach_m68hc11_regs): Use M6811_IO_LEVEL.
 296         (m68hc11cpu_io_write): Likewise when unmapping and re-mapping.
 297         * dv-m68hc11spi.c (m68hc11spi_finish): Likewise.
 298         (attach_m68hc11spi_regs): Likewise.
 299         * dv-m68hc11tim.c (m68hc11tim_finish): Likewise.
 300         (attach_m68hc11tim_regs): Likewise.
 301         * dv-m68hc11sio.c (m68hc11sio_finish): Likewise.
 302         (attach_m68hc11sio_regs): Likewise.
 303         * interp.c (sim_open): Likewise.
 304         * dv-nvram.c (attach_nvram_regs): Likewise.
 305
 306 Thu Jul 27 21:27:25 2000  Andrew Cagney  <cagney@b1.cygnus.com>
 307
 308         * configure, config.in: Regenerate.
 309
 310 2000-06-25  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 311
 312         * Makefile.in (SIM_RUN_OBJS): Define to use nrun.c
 313         * dv-m68hc11.c (m68hc11cpu_finish): Register detach address callback.
 314         (dv_m6811_detach_address_callback): New function to detach a
 315         device from an address space.
 316         * dv-m68hc11eepr.c (m68hc11eepr_port_event): Initialize
 317         config register according to --cpu-config option.
 318         * sim-main.h (_sim_cpu): Add cpu_config member.
 319         * interp.c (sim_open): Delete specific simulator options.
 320         * m68hc11_sim.c (cpu_option_handler): New options
 321         --emulos and -cpu-config <val> to configure the simulator.
 322         (cpu_initialize): Initialize cpu_config member.
 323
 324 2000-06-24  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 325
 326         * emulos.c: Fix indentation and comments.
 327         * gencode.c: Likewise.
 328         * dv-m68hc11tim.c (m68hc11tim_timer_event): Handle COMPARE_EVENT.
 329         (m68hc11tim_io_write_buffer): Write compare registers and
 330         setup compare event.
 331         * interp.c: Remove unused global variables.
 332         * interrupts.c (idefs): New compare interrupts.
 333         Fix indentation and comments.
 334         * interrupts.h: Likewise.
 335
 336 2000-06-18  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 337
 338         * dv-m68hc11sio.c: Fix indentation and comments.
 339         Remove INT_PORT.
 340         * dv-m68hc11.c: Fix indentation and comments.
 341         (m68hc11cpu_port_event): Move initialization of M6811_HPRIO from here.
 342         * m68hc11_sim.c (cpu_reset): To here.
 343         * dv-m68hc11eepr.c: Fix indentation and comments.
 344
 345 2000-06-17  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 346
 347         * dv-nvram.c: New file, rename from dv-pram.c.
 348         * dv-pram.c: Delete file.
 349         * sim-main.h: Incorporate m68hc11_sim.h.
 350         * m68hc11_sim.h: Delete file.
 351         * configure.in: Rename pram into nvram.
 352         * interp.c (sim_open): Likewise in creation of device tree.
 353
 354 2000-05-31  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 355
 356         * interp.c (sim_open): Create the SPI device.
 357         * dv-m68hc11spi.c: New file for SPI device simulation.
 358         * configure.in (hw_extra_devices): Add SPI device.
 359
 360 2000-05-28  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 361
 362         * interrupts.c (interrupts_initialize): Clear XIRQ accounting.
 363         (interrupts_process): Separate IRQ and XIRQ accounting.
 364         (interrupts_info): Report XIRQ accounting.
 365         * interrupts.h (struct interrupts): Added accounting for XIRQ.
 366
 367 2000-04-16  Stephane Carrez  <stcarrez@worldnet.fr>
 368
 369         * dv-pram.c (attach_pram_regs): Fix the 'save-modified' mode.
 370         * m68hc11_sim.h (_sim_cpu): Allow configuration of cpu mode.
 371         * dv-m68hc11.c (attach_m68hc11_regs): Get the cpu MODA,MODB
 372         configuration from the 'mode' device tree property.
 373         (m68hc11cpu_port_event): Reset M6811_HPRIO to the cpu MODA, MODB
 374         configuration.
 375
 376 2000-02-24  Stephane Carrez  <stcarrez@worldnet.fr>
 377
 378         * sim-main.h: Remove WITH_TARGET_* defines.
 379         * Makefile.in (SIM_EXTRA_CFLAGS): Specify the WITH_TARGET_* flags.
 380
 381 2000-02-08  Stephane Carrez  <stcarrez@worldnet.fr>
 382
 383         * dv-m68hc11sio.c (m68hc11sio_port_event): Setup the SCI to
 384         1200 baud when cpu is in bootstrap mode.
 385
 386         * dv-m68hc11tim.c (m68hc11tim_io_write_buffer): Be able to
 387         write in the TCTN timer register.
 388
 389         * dv-m68hc11sio.c (m68hc11sio_io_write_buffer): Divide cpu clock
 390         by 4 to obtain the E clock frequency.
 391         (sccr2_desc): Use M6811_TIE for TIE bit.
 392         (m68hc11sio_info): Fix baud rate report.
 393
 394         * dv-m68hc11tim.c (to_realtime): Likewise.
 395
 396         * interp.c (sim_open): When building device tree, only provide
 397         devices that do not exist yet.
 398
 399         * emulos.c: Fix compilation pb under Windows.
 400
 401         * dv-m68hc11.c (attach_m68hc11_regs): Get the clock frequency
 402         from the 'clock' property.
 403
 404 2000-01-02  Stephane Carrez  <stcarrez@worldnet.fr>
 405
 406         * m68hc11_sim.h (*_REGNUM): Define.
 407         (_sim_cpu): New member cpu_page0_reg table.
 408         * interp.c (sim_create_inferior): Fill the cpu_page0_reg table with
 409         addresses of soft registers in .page0.
 410         (sim_fetch_register, sim_store_register): Use cpu_page0_reg table
 411         to get/set soft registers.
 412
 413 1999-12-31  Stephane Carrez  <stcarrez@worldnet.fr>
 414
 415         * dv-m68hc11.c (m68hc11cpu_io_write_buffer): Clear byte to avoid
 416         returning random values.
 417
 418 1999-12-17  Stephane Carrez  <stcarrez@worldnet.fr>
 419
 420         * gencode.c: Fix "subb N,x" that used a instead of b.
 421
 422 1999-09-09  Stephane Carrez  <stcarrez@worldnet.fr>
 423
 424         * gencode.c: Fixed sbc8 and adc8 when there was a initial carry.
 425
 426 1999-09-01  Stephane Carrez  <stcarrez@worldnet.fr>
 427
 428         * sim-main.h (SIM_HANDLES_LMA): Define to enable loading using lma.
 429
 430 1999-08-14  Stephane Carrez  <stcarrez@worldnet.fr>
 431
 432         * dv-m68hc11.c (attach_m68hc11_regs): Save the size of the
 433         register region in the m68hc11cpu struct.
 434         (m68hc11cpu_io_write): When the IO mapping addres changes,
 435         detach the register region and re-attach it at the new address.
 436         (m68hc11cpu_io_read_buffer): Renamed base_address into
 437         attach_address.
 438         (m68hc11cpu_io_write_buffer): Likewise. Pass the hw pointer
 439         to m68hc11cpu_io_write.
 440
 441 1999-08-13  Stephane Carrez  <stcarrez@worldnet.fr>
 442
 443         * gencode.c: For sbc8, check the carry and increment the source
 444         before trying to set the carry for the result.
 445
 446 1999-05-24  John S. Kallal <kallal@voicenet.com>
 447
 448         * interp.c (sim_get_info): Don't crash if the command line is 0.
 449         Define prototype for sim_get_info() and init_system().
 450         (sim_info): Correct call to sim_get_info().
 451
 452 1999-05-16  Stephane Carrez  <stcarrez@worldnet.fr>
 453
 454         * configure.in: Recognize m6811-*-*.
 455         * configure: Regenerate.
 456         * m68hc11_sim.h (cpu_ccr_update_add8, cpu_ccr_update_add16,
 457         cpu_ccr_update_sub8, cpu_ccr_update_sub16):
 458         Correct the computation of carry of 8 and 16-bits add and subtract.
 459         * gencode.c: Use cpu_ccr_update_sub8 for subtraction (carry and
 460         overflow set in a different manner than add).
 461
 462 1999-05-14  Stephane Carrez  <stcarrez@worldnet.fr>
 463
 464         * dv-m68hc11.c (dv_m6811_attach_address_callback): Removed a
 465         trace message.
 466         * interp.c (sim_open, sim_create_inferior): Initialize the
 467         cpu_elf_start from the ELF header.
 468         * m68hc11_sim.c (cpu_initialize): Clear the new data members.
 469         (cpu_restart): Use cpu_elf_start as the starting address when
 470         the flag is set.
 471         (cpu_special): When cpu_use_elf_start is set, the WAI instruction
 472         exits the simulator (exit status is in D).
 473         * m68hc11_sim.h (_sim_cpu): Added members cpu_use_elf_start and
 474         cpu_elf_star to start execution at address specified in ELF file.
 475
 476 1999-05-02  Stephane Carrez  <stcarrez@worldnet.fr>
 477
 478         * Makefile.in, config.in, configure, configure.in: New files.
 479         * gencode.c: New file, generation of 68HC11 interpreter.
 480         * m68hc11_sim.h, m68hc11_sim.c: New files, specific operations
 481         for interpreter.
 482         * interrupts.c, interrupts.h: New files, management of interrupts.
 483         * interp.c, sim-main.h,
 484         * dv-m68hc11.c, dv-m68hc11eepr.c, dv-m68hc11sio.c,
 485         dv-m68hc11tim.c, dv-pram.c: New files representing devices for
 486         68HC11 (dv-pram.c is generic and could probably migrate to common).
 487         * emulos.c: New file, basic emulation of some os.