old-cross-binutils/sim/ppc/ChangeLog

Fri Oct 27 19:26:27 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* bits.h (ROTL32, ROTL64): Were functions, made them macros, now
 	make them functions again.  Appears 2.6.3 is confused by just a
 	macro.

Thu Oct 26 18:31:58 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* ppc-endian.c (SWAP_8): Fix 8 byte swap!

	* psim.c (psim_create): Not correctly checking that runtime
 	configuration of things like ENDIAN, ENVIRONMENT and ALIGNMENT
 	matched the compiled in ones.

	* debug.h (ITRACE), igen.c: Tidy up more tracing flags -
 	trace_semantics is now different to trace_idecode, the former
 	checks the cache.
	
Tue Oct 24 21:54:13 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* ppc-instructions (mtsrin): Missing instruction
	* ppc-instructions (mfsrin): Missing instruction
	* ppc-instructions (eieio): Missing instruction

Tue Oct 24 20:55:29 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* build-psim: New shell script - see internals for usage,
 	simplifies the process of building custom simulators.

Mon Oct 23 23:48:59 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* std-config.h (SEMANTICS_INLINE): Tidy up notes on each of the
        INLINE macros.  Make SEMANTICS_INLINE == 1 if DEFAULT_INLINE == 2.
        Don't use DEFAULT_INLINE to define REGISTERS_INLINE DEVICES_INLINE
        DEVICE_TREE_INLINE or INTERRUPTS_INLINE as none of these are on
        the instruction or data critical paths.
  	
	* FIXME: need to set up OS_EMUL_INLINE/EMUL_GENERIC_INLINE but
 	not on critical path.

	* FIXME: devices.c/emul_netbsd.c would benefit (slightly) from
 	the inclusion of device_tree.c/emul_generic.c.

Mon Oct 23 00:31:50 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* os_emul.[hc], emul_generic.[hc], emul_netbsd.[hc]: replace
        system.[hc].  Start of suport for multiple emulations and
        emulation state (os_emul object).

	* emul_generic.[hc]: Start of code to implement proper system call
	tracing (from spy).

Sun Oct 22 21:33:51 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* cpu.h, cpu.c (cpu_init): New function, zero the registers before
        the processor is started. Fixes problem of registers being
        undefined when restarting from within gdb.

	* cpu.h, cpu.c (cpu_flush_icache): New function, flushes the
        instruction cache (if present).  Fixes problem of cpu caching gdb
        breakpoint instructions.

	FIXME: PSIM sometimes aborts calling error(), it should instead
 	call sim_error() say which takes care of housekeeping such as
 	saving the CIA before calling error.
	
	* NOTE: cpu_flush_cache() instead of cpu_synchronize_context() is
 	used when restarting a simulation because the latter has the
 	unwanted side effect (well I as a kernel hacker think it is) of
 	performing an isync when the instruction stream doesn't contain
 	one.

Sun Oct 22 19:27:48 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* mon.h (new), mon.c (new), std-config.h (WITH_MON): Performance
        monitoring module. Counts both instructions issued and
        load/stores.

	* NOTE: mon does not contain to count instruction loads as this
 	information is already available from the mon_issue() hook.

	* FIXME: mon doesn't have access to register usage information.
  	This is needed if the user wants to monitor things like register
 	stalls.

	* igen.c (lf_print_c_semantic), vm_n.h: Add counting code.

	* psim.h, psim.c (psim_create), cpu.h, cpu.c (cpu_create): Attach
        a common monitor to each of the cpus. Delete
        cpu_increment_number_of_insns() and cpu_get_number_of_insns()
        replaced by copied code in mon.[hc].

Sun Oct 22 18:42:45 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* sim_calls.c, main.c, psim.c (psim_create): always create
        `WITH_SMP' cpus.  The actual number of CPU's active in a
        simulation run is taken from the device node: /init/smp (an
        integer). WITH_SMP changed to 2 (remember to put it back to 0).

Fri Oct 20 17:26:54 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* system.c: More system call emulation.  If code appears NetBSD
 	specific, make conditional to being compiled on a NetBSD system
 	(sigh).

Wed Oct 18 23:02:20 1995  Andrew Cagney  <cagney@cagney@highland.com.au>
	
	* Makefile.in, gen.c(delete), igen.c(new), dgen.c(new),
 	lf.[ch](new), table.[ch](new): Split into two generators - igen
 	that outputs the instruction tables and dgen that outputs the spr
 	tables.  Add -f (filter out) flag to igen to filter out certain
 	instructions (ex 64 bit ones) from the created tables.  Include
 	$(LIBIBERTY_LIB) in link options in case host lacks some libc
 	functions.

	* NOTE: igen, since it was originally written for the
 	PowerPC/RS6000, things the MSB is 0 and the LSB is 63{31}.
	
	* Makefile.in, std-config.h, ppc-cache-rules(new),
 	ppc-opcode-complex(new), ppc-opcode-simple(new): (for igen) Create
 	cache-rule and opcode-rule tables from macros found std-config.h.
 	Delete corresponding macro's from std-config.h.
  	
	* FIXME: under this new igen scheme, when playing around with igen
 	options, you'll find that depenencies don't work very well.

	* igen.c (gen_itable_c, gen_itable_h), Makefile.in: code to output
 	an table of all the instructions.  Code to output a type
 	enumerating all the instructin names.

	* igen.c(lf_print_c_semantic): Move call to increment instruction
 	counter so that it occures _after_ the instruction has been fully
 	validated, was double counting illegal/invalid instructions.  Add
 	conditional so only compiled in when WITH_PROFILE enabled (enabled
 	by default).
	
	* igen.c, cpu.h, cpu.c(cpu_increment_number_of_insns): Include
 	itable.h, count individual instruction types not just total,
 	adjust reporting functions to output this.
	
	* ppc-instructions (64 bit Load Doubleword with Update Indexed):
 	Had 32./ instead of 31./

	* ppc-instructions (64 bit Store Double Word Conditional Indexed):
 	bitrot - updated to use newer CR register operators.

	* ppc-instructions (64bit Floating Convert from Integer
 	Doubleword): Correct call to Round_Float().

Mon Oct 16 00:31:20 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* basics.h: #include "sim_callbacks.h" earlier so that its
 	prototypes are declared in all other header files.

	* bits.h, bits.c, idecode_expression.h (ROTL32, ROTL64): Update
 	doc in bits.h, remove dead code in bits.c, move ROTL32/ROTL64 into
 	bits.h.

	* FIXME: the bits.h/bits.c macro's should be replaced with
 	(inline) c functions.

	* cpu.c(cpu_add_commas), device_tree.h, device_tree.c(scand_*):
 	Add size of buffer argument to functions writing a string into a
 	buffer.  Check for buffer overflow.
	
Sun Oct 15 22:16:11 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* devices.h, devices.c, debug.h, debug.c: add macro's for tracing
        of each device.  Make parameter names consistent so macros work.
        Use macro's in device functions.

	* device_tree.c, devices.h, devices.c: include path to device in a
        devices node when creating it.

	* device_tree.c, debug.h, debug.c: Add tracing of `device-tree'.

	* core.c: add tracing of core-device, adjust parameter names in
 	core functions to be consistent with those in devices*.

Sun Oct 15 20:33:20 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

        * debug.h, debug.c (trace_option): New function. Parses the trace
        option, updating the trace array.

	* debug.h, debug.c (trace_usage): New function. Outputs the list
        of all possible trace options.

	* sim_calls.c (sim_open), main.c (main): Use new trace_option() to
 	parse trace options specified with the simpler -t flag.  Adjust
 	usage.

	* FIXME: basic parsing of command line options is still duplicated
 	by main.c and sim_calls.c

Thu Oct 26 10:42:28 1995  Michael Meissner  <meissner@tiktok.cygnus.com>

	* Makefile.in (clean): Delete *.i and *.out files.

	* ppc-endian.c (SWAP_n): Add SET argument to allow use of SWAP
	macros for either assignment or return.  Fix SWAP_8 to use a
	union, and two SWAP_4's.  Delete SWAP_N, since nobody uses it now.
	(ENDIAN_N): Add SET argument to SWAP_n calls.  Delete macro defs
	that hardwired swapping on/off, let optimizer delete dead code.

	* main.c (main): Add printf that we caught a signal and print out
	the failing address.

Thu Oct 19 21:43:39 1995  Fred Fish  <fnf@fishfood.amigalib.com>

	* Makefile.in:  Remove tabs from otherwise empty line.
	Confuses many non-GNU versions of "make".

Wed Oct 18 08:51:25 1995  Michael Meissner  <meissner@tiktok.cygnus.com>

	* Makefile.in (clean): Delete files produced by gen.

Mon Oct 16 17:34:24 1995  Michael Meissner  <meissner@tiktok.cygnus.com>

	* gen.c (lf_print_c_semantic_function): Move counting # of
	instructions here so it works with caching.
	(gen_idecode_c): Move from here.

Wed Oct 11 17:13:15 1995  Andrew Cagney  <cagney@highland.com.au>

	* gen.c, ppc-instructions, psim.c: Fix code for generating
	cracking instruction cache.  Delete the code that cached just the
	result from doing an instruction lookup - this ran slower than no
	cache at all.

Fri Oct 13 09:58:43 1995  Michael Meissner  <meissner@tiktok.cygnus.com>

	* Makefile.in (gen.o): Include $(INLINE_CFLAGS).

	* debug.h (ppc_trace): Rename from trace, to avoid a conflict with
	TCL when gdb is linked with the simulator.
	* debug.c (ppc_trace): Ditto.
	* sim_calls.c (sim_open): Change trace -> ppc_trace.
	* main.c (main): Ditto.

	* cpu.c (cpu_add_commas): Remove extra static.

Thu Oct 12 11:35:53 1995  Michael Meissner  <meissner@tiktok.cygnus.com>

	* Makefile.in (psim.o): Now that inlines are turned on, make
	psim.o depend on all sources.

	* cpu.c (cpu_add_commas): New function to format a long with
	commas.
	(cpu_print_info): Use it to print number_of_insns.
	
	* ppc-endian.c (SWAP_n): New macros to speed up byte swapping for
	2, 4, and 8 bytes.
	(ENDIAN_N): If both target and host byte orders are known, don't
	bother testing CURRENT_{TARGET,HOST}_BYTE_ORDER.

	* ppc-endian.h (target specific H2T_n/T2H_n macros): Remove #if 0
	to allow target specific H2T_n/T2H_n macros to be used.
	(htonl, ntohl): If compiled on a 486 by GCC and WITH_BSWAP is
	non-zero, redefine the htonl/ntohl macros to use the BSWAP instead
	of the 3 instruction sequence that runs on 386s.

	* std-config.h (WITH_{HOST,TARGET}_BYTE_ORDER): Don't override if
	specified on the compile line.
	(WITH_BSWAP): If not defined, define as 0.

	* Makefile.in (INLINE_CFLAGS): Add -DDEFAULT_INLINE=2 to add
	default inline support.  Pass INLINE_CFLAGS when compiling.

	* devices.{h,c} (unimp_device_ioctl): Use STATIC_DEVICES, not
	INLINE_DEVICES since GCC doesn't like inline functions that
	accept variable arguments.
	(stack_ioctl_callback): Make function just static because GCC
	doesn't like inline functions that accept variable arguments.

	* devices.h (STATIC_DEVICES): Define as empty if not defined.

	* inline.c: Correct pathnames of included C files to match current
	implementation.

	* inline.h (STATIC_DEVICES): If DEVICES_INLINE is defined to be
	non-zero, define STATIC_DEVICES to be static.

	* std-config.h (INLINE): If GNU C and optimizing, define this as
	__inline__.
	(DEFAULT_INLINE): If not defined, define as 0.
	(ENDIAN_INLINE): If not defined, define as DEFAULT_INLINE.
	({CORE,VM,CPU,EVENTS,REGISTERS,INTERRUPTS}_INLINE): Ditto.
	({SPREG,IDECODE}_INLINE): Ditto.	
	
Wed Oct 11 17:13:15 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

        * ppc-instructions: Initial cut of floating point suport added.
  	Of note include - use of host IEEE floating point instructions,
 	use of PowerPC manual pseudo code to handle the FPSCR.  It is not
 	currently a pretty sight.
	
	* memory_map.h, memory_map.c, memory_map_n.h, core.h, core.c:
 	merge into core.h, core.c, core_n.h. The type memory_map replaced
 	with core_map.  This removes a level of pointer indirection when
 	translating an address.

	* memory_map.h, memory_map.c, memory_map_n.h: delete.

	* Makefile.in et.al (sorry): tweek to use new core, core_map and
 	core.h.
	
Wed Oct 11 12:10:26 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* sim_calls.c, main.c: Add -g (trace_gdb) option, add tracing to
 	most of the other functions in sim_calls.c.

	* basics.h (CONCAT3), memory_map.c, memory_map_n.h, Makefile.in:
 	Add macros to better cover up `generic' code.  Makes it possible
 	to step through the generic code!

	* vm.c, vm_n.h, Makefile.in: ditto
	
Tue Oct 10 15:42:59 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* devices.h, devices.c, memory_map.h, memory_map.c: Changed
 	callback interface so that there is a read/write buffer but no
 	read/write_word.  VEA default memory read/write handler sometimes
 	couldn't resolve an access and of those some were for a memory
 	fault and some were because gdb was making a bogus request.

	* devices.h, devices.c, memory_map.h, memory_map.c, vm.h, vm.c:
 	eliminate transfer_mode (raw or cooked) parameter from read/write
 	buffer.
	
Fri Oct  6 20:23:56 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* ppc-instructions (fmul, fmuls): correct instruction format - had
 	FRB instead of FRC.

Wed Oct  4 17:31:12 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* psim.c, device_tree.h, device_tree.c, devices.c (printd_*,
 	scand_*): new functions to parse/print fields in device names
 	while hiding any machine dependency.

	* devices.c, psim.c: Change the stack init code so that it is
 	handled by a device.  Arguments passed across using a device ioctl
 	(hack).

	* devices.h, devices.c: device ioctl callback changed to allow a
 	variable number of arguments.  This gives greater flexability and
 	greater chance of bugs.

Tue Oct  3 22:01:56 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* main.c (printf_filtered, error): Missing va_end() to close off
        variable argument use.

	* Makefile.in (tmp-gencode): comment out hack to get around some
        versions of make not handling files being created as side-effects.

	* gen.c (lf_open): Add -n (real_file_name) option.  Specifies an
        alternative file name to use in output files for things like #line
        macros.

        Makefile.in (tmp-gencode): Use gen -n so that debug info is
        correct.

	* Makefile.in (TARGETLIB): Use this instead of libsim.a in the
	Makefile.

Sat Oct  7 22:40:59 1995  Michael Meissner  <meissner@tiktok.cygnus.com>

	* sim_calls.c (sim_set_callbacks): Define new function.

Fri Oct  6 17:23:10 1995  Michael Meissner  <meissner@tiktok.cygnus.com>

	* psim.c (psim_print_info): Print exit status or signal number.

Mon Oct  2 11:46:37 1995  Michael Meissner  <meissner@tiktok.cygnus.com>

	* cpu.c (struct _cpu): Add number_of_insns field to trace how many
	instructions are executed.
	(cpu_increment_number_of_insns): New function to increment the
	number of instructions issued.
	(cpu_get_number_of_insns): New function to return the number of
	instructions issued.
	(cpu_print_info): New function to print cpu related information.
	At present, print the number of instructions executed.

	* gen_idecode_c: Emit call to cpu_increment_number_of_insns within
	idecode_issue.

	* psim.c (psim_print_info): New function to iterate over each of
	the CPU's calling cpu_print_info.
	
	* psim.h,cpu.h: Add new declarations.

	* sim_calls.c (sim_open): Add argument processing to add the same
	switches main.c accepts for the standalone processor.
	(sim_close): Call psim_print_info if -I.

	* main.c (main): Add comment saying to update sim_calls.c when
	adding switches.  Add -I to call psim_print_info when done.
	(usage): Update usage message.

Sun Oct  1 13:52:59 1995  Michael Meissner  <meissner@tiktok.cygnus.com>

	* main.c (printf_filtered): Correct to match new prototype.

Sat Sep 30 20:47:05 1995  Michael Meissner  <meissner@tiktok.cygnus.com>

	* sim_callbacks.h (printf_filtered): Correct prototype.

Thu Sep 21 16:26:49 1995  Michael Meissner  <meissner@tiktok.cygnus.com>

	* device_tree.c (OEA_MEMORY_SIZE): Define if not defined to
	0x100000.
	(clayton_memory_size): Define as OEA_MEMORY_SIZE.

	* std-config.h (WITH_TRACE): Default to 1 now.

	* psim.c (write_stack_arguments): Don't write any stack arguments
	if OEA.

	* main.c (main): Switch to using getopt.  Make -p also set
	trace_semantics.  Make -a turn on all trace flags.  Make -C turn
	on console tracing.

	* device_tree.c (create_option_device_node): Assume a program is
	OEA if the start address is < 4096, not just == 0.

Wed Sep 20 13:36:06 1995  Ian Lance Taylor  <ian@cygnus.com>

	* Makefile.in (maintainer-clean): New synonym for realclean.

Sun Sep 10 10:23:56 1995  Michael Tiemann  <tiemann@axon.cygnus.com>

	* registers.c (register_description): Add gdb synonyms for cr
	(cnd) and msr (ps).

Fri Sep  8 13:16:10 1995  Ian Lance Taylor  <ian@cygnus.com>

	* Makefile.in (install): Don't install in $(tooldir).

	* configure.in: Call AC_CONFIG_HEADER.  Don't try to use
	bfd/hosts/*.h file or bfd/config/*.mh file.  Call AC_PROG_CC and
	AC_PROG_RANLIB.  Substitute in values for CFLAGS, HDEFINES, AR,
	and CC_FOR_BUILD.  Call AC_CHECK_HEADERS for various header files.
	Touch stamp.h if creating config.h.
	* configure: Rebuild.
	* config.in: New file, created by autoheader.
	* Makefile.in (AR): Define as @AR@.
	(CC): New variable, defined as @CC@.
	(CFLAGS): Define as @CFLAGS@.
	(CC_FOR_BUILD): New variable, defined as @CC_FOR_BUILD@.
	(RANLIB): Define as @RANLIB@.
	(HDEFINES, TDEFINES): New variables.
	(@host_makefile_frag@): Remove.
	(mostlyclean): Make the same as clean, not distclean.
	(clean): Remove config.log.
	(distclean): Remove config.h and stamp-h.
	(Makefile): Don't depend upon @frags@.  Just rebuild Makefile when
	invoking config.status.
	(config.h, stamp-h): New targets.
	(gen, gen.o): Build with CC_FOR_BUILD, not CC.
	(ppc-config.h): Rename from old config.h build.
	* (basics.h,gen.c,ppc-endian.c,psim.c): Include ppc-config.h.
	
Fri Sep  8 09:51:03 1995  Michael Meissner  <meissner@tiktok.cygnus.com>

	* configure{,.in}: Don't include sysdep.h from bfd, since bfd no
	longer provides it.
	* basics.h (sysdep.h): Don't include it.
	* Makefile.in (BASICS_H): Remove sysdep.h.

Wed Sep  6 13:25:42 1995  Andrew Cagney  <cagney@cagney@highland.com.au>
 
 	* core.c (core_add_data): First growth of bss was being put at
        wrong address (0) instead of &end.
 
 	* core.c (core_add_stack, core_add_data): Was not handling case
        where bss/stack is grown across the current end-of-{bss,stack}.

Wed Sep  6 00:46:10 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* system.c (system_call): Fix SYS_break - was aligning bss to a
        page boundary instead of just an 8 byte one; On first call sbrk(0)
        != sbrk(0).

Thu Aug 24 14:48:54 1995  Michael Meissner  <meissner@tiktok.cygnus.com>

	* Makefile.in (install): Fix install rule.

Tue Aug 22 09:31:18 1995  Michael Meissner  <meissner@tiktok.cygnus.com>

	* system.c (system_call): Add read support.

	* main.c (main): -t sets trace_device_tree.  Correct usage message
	to current reality.

	* device_tree.c (update_memory_node_for_section): Make tracing
	output line up.  If not code or readonly, assume that the section
	is a data section and has read/write permissions.  Add readonly
	support.

	* core.c (create_core_from_addresses): Print end address in traces
	and make tracing output line up.

	* Makefile.in: Rewrite from Makefile to work with the Cygnus
	environment, and support compiling in a different directory than
	the sources reside in.

	* ppc-endian.h: Rename from endian.h so that it doesn't get
	confused with /usr/include/sys/endian.h on Linux.  Add Linux
	endian support.

	* ppc-endian.c: Rename to be consistant with ppc-endian.h.
	Include ppc-endian.h, not endian.h.

	* basics.h (sysdep.h): Include sysdep.h that configure makes.
	Include ppc-endian.h, not endian.h.

	* std-config.h: Rename from ppc-config.  Put #ifndefs around most
	configuration macros, so they can be overridden via CFLAGS.  By
	default, turn off tracing.

	* configure.in: Clone from other simulator targets.
	* configure: Generate via autoconf from configure.in.

Sat Aug 19 09:05:32 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* ppc-instructions: fix srawi (was geting XER[CA] real wrong).

	* interrupts.c (data_storage_interrupt): allow stack to grow by
        upto one MB per increment.

	* ppc-instructions: divw was computing rA / rA not rA / rB

	* main.c (main): really stupid. Wasn't exiting with correct status

Fri Aug 18 00:38:01 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* system.c (system_call): add system calls kill(2) and getpid(2).

	* main.c (main): Check/return exit status when simulation
        finishes.

Thu Aug 17 14:29:18 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* device_tree.c (create_option_device_node): Alignment rules (at
 	least for the moment) now are for strict alignment only for LE OEA
 	mode.  (Because of compiler problems).

	* system.c (system_call) SYS_exit: Wasn't exiting with correct status.

Thu Aug 17 01:16:38 1995  Andrew Cagney  <cagney@cagney@highland.com.au>

	* vm.c (DEFINE_VM_DATA_MAP_WRITE_N): For miss aligned transfer
        forgot to return.

	* system.c (system_call): didn't page align break argument before
        determining increment break increment.

	* psim/ppc: Re-arange entire directory structure so that
        everything lives in the one directory.  While a pain for cleaning,
        makes building across multiple architectures much simpler.

	* devices.c, device_tree.c: Added code that provides a simple
        illustration of how an interrupt control device could be
        implemented.

	* devices.c: Added code so that the dumb console device can read
        (from stdin) as well as write to stdout.