binutils-gdb/sim/igen/ChangeLog

Mon Mar 17 15:17:07 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>

	* ld-decode.c (load_decode_table): Rename slash to reserved.
	(dump_decode_rule): Ditto.

	* ld-insn.c (parse_insn_format): Differentiate between a `/' -
 	reserved bit - and a `*' - wild card.
	(parse_insn_format): Change is_slash to more informative reserved.
	(dump_insn_field): Ditto.
	(insn_field_is_constant): Ditto.
	(insn_table_expand_opcode): Ditto.

	* gen-idecode.c (print_idecode_validate): Make check_mask and
 	check_val the correct integer size.
	(print_idecode_validate): Fix reserved bit check for 64 bit
 	targets.

Fri Mar 14 11:24:06 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>

	* ld-insn.c (parse_insn_format): Accept '*' as an alternative of
 	`/' in bit fields.  `/' denotes a wild bit.

Fri Mar  7 18:20:38 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>

	* igen.h, igen.c (main): New options. Control generation of
 	conditional issue and slot verification code.

Fri Mar  7 18:17:25 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>

	* gen-support.c (print_support_function_name): Prepend the global
 	name prefix when applicable.  Provide #define to map the user
 	specified name the generated globaly unique one.

Fri Mar  7 18:07:45 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>

	* gen-idecode.c (print_idecode_validate): Wrap each of the checks
 	- reserved bits, floating point and slot validation - with a
 	#ifdef so that they are optional.
	
Fri Mar  7 16:35:13 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>

	* gen-idecode.c (error_leaf_contains_multiple_insn): New function
 	- report the error of a leaf node in the decision tree containing
 	several instructions.
	(print_idecode_table_leaf): Detect a leaf with multiple instructions.
	(print_idecode_switch_leaf): Ditto.

	* gen-semantics.h, gen-semantics.c (print_idecode_illegal,
 	print_idecode_invalid): Rename former to latter.  Add argument so
 	that one function can generate all invalid instruction cases -
 	illegal, fp-unavailable, wrong-slot.
	* gen-engine.c: Update.

	* gen-idecode.c: Use print_idecode_invalid to generate a function
 	call for cases when fp-unavailable and the slot is wrong.

	* gen-idecode.c (print_idecode_validate): New check, generate code
 	to verify that the instruction slot is correct.
	
	* igen.c (main): Simplify options.

Wed Mar  5 09:55:55 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>

	* igen.c (print_itrace): Remove source line reference for trace
 	code - let the user see the generated file.
	(print_itrace): Print the trace code rather than reference a
	macro.

Tue Mar  4 17:31:55 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>

	* igen.c (print_semantic_function_actual): Pass either the
 	processor - smp - or the engine - mono - into semantic functions.
  	Don't pass in both.

	* gen-icache.c (print_icache_body): Dependant on smp, derive
 	processor from engine or engine from processor, and hence ensuring
 	that both are defined in all semantic functions.

Mon Mar  3 17:11:21 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>

	* ld-insn.c (parse_insn_format): Make the width field optional.
  	If missing assume that the number of characters in the value
 	determines the number of bits in the field.
	
Thu Feb 27 11:27:48 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>

	* ld-insn.c (insn_table_expand_opcode): Replace assertion with
 	more useful error message.

Tue Feb 25 16:43:27 1997  Andrew Cagney  <cagney@kremvax.cygnus.com>

	* misc.c (error): Output errors on stderr.

	* ld-insn.c (parse_insn_format): Skip any leading spaces.
  	Verify the width of instructions being parsed.

	* table.c (table_entry_read): Parse CPP's convention for
 	specifying original file name/line-nr.

Wed Feb 19 12:30:28 1997  Andrew Cagney  <cagney@critters.cygnus.com>

	* ld-insn.c (parse_insn_format): Allow trailing spaces in
 	instruction fields.

	* Makefile.in: Create using ../ppc/Makefile.in as a starting
 	point.
	* configure.in: Ditto vis ../ppc/configure.in
	
Mon Feb 17 10:44:18 1997  Andrew Cagney  <cagney@critters.cygnus.com>

	* gen-support.c (gen_support_c): Always include engine.h instead
 	of cpu.h
	* gen-idecode.c (gen_idecode_c): Ditto.

	* words.h (instruction_word): Remove instruction_word - now
 	generated by igen.
	(address_word): New.  Used by igen.
	
	* lf.c (lf_print_function_type_function): New, pass a function to
 	print out the type instead of a constant string.
	
	* igen.h, igen.c (print_semantic_function_formal,
 	SEMANTIC_FUNCTION_FORMAL): Relace macro with function.
	(print_semantic_function_actual, SEMANTIC_FUNCTION_ACTUAL): Ditto.
	(print_semantic_function_type, SEMANTIC_FUNCTION_TYPE): Ditto.
	(print_icache_function_type, ICACHE_FUNCTION_TYPE): Ditto.
	(print_icache_function_formal, ICACHE_FUNCTION_FORMAL): Ditto.
	(print_icache_function_actual, ICACHE_FUNCTION_ACTUAL): Ditto.
	* gen-idecode.c (print_idecode_table): Update.
	(idecode_switch_leaf): Update.
	(print_idecode_switch_function_header): Ditto.
	(print_idecode_floating_point_unavailable): Ditto.
	(print_idecode_issue_function_header): Ditto.
	* igen.c (gen_icache_h): Ditto.
	* gen-engine.c (print_engine_table): Ditto.
	(engine_switch_leaf): Ditto.
	* gen-support.c (print_support_function_name): Ditto.
	* gen-semantics.c (print_semantic_function_header): Update.
	Update.
	* gen-icache.c (print_icache_function_header): Update.
	(print_icache_function): Update.
	(print_icache_internal_function_declaration): Update.
	(print_icache_internal_function_definition): Update.

	* gen-idecode.c (gen_idecode_h): Drop including of idecode_*.h
 	files, will at some stage need to move it into support.

	* igen.h, igen.c (main): New option -e <engine> - generate a full
 	simulation engine.  Previously this was the -d <idecode-file>
 	option.
	* gen-engine.h, gen-engine.c: Copies of gen-idecode.*.  Will need
 	to clean these up so that that call upon the updated gen-idecode
	code.
	
	* gen-idecode.h, gen-idecode.c: Prune out any code not relevant to
 	generating a decode table.
	
	* Makefile.in (igen): Add dependencies for new gen-engine.* files.

	* igen.h, igen.c (main): New option -M - Control what is returned
 	by semantic functions - -1/NIA vs CIA+N/NIA.  Add
 	generate_semantic_returning_modified_nia_only to igen_code enum.
	* gen-semantics.c (print_semantic_body): As an alternative, make
 	NIA == -1 instead of CIA+insn_size by default.
	
	* igen.h, igen.c (main, global_name_prefix, global_uname_prefix):
 	New option -P <prefix> - Prepend all generated functions with the
 	specified prefix.
	(gen_idecode_c): Adjust.
	* gen-icache.c (print_icache_struct): Ditto.
	* gen-support.c (gen_support_c): Ditto.

Sun Feb 16 15:23:15 1997  Andrew Cagney  <cagney@critters.cygnus.com>

	* igen.c (main): Correct usage. Missleading message about ucase
 	options dumping internal tables.  -F now includes rather then
 	excludes instructions.

	* misc.h, misc.c (a2i): Make 64bit.

	* ld-insn.h (max_insn_bit_size, default_insn_bit_size): Increase
 	max to 64bits, expect trouble.  Make the default 32 bits.
	* gen-idecode.c (print_idecode_table): Change EXTRACTED*
 	et.al. macro's to use the insn_bit_size instead of assuming 32
 	bits.
	* gen-icache.c (print_icache_extraction): Ditto.
	* gen-idecode.c (idecode_switch_start): Ditto.
	* gen-idecode.c (gen_idecode_c): Ditto

	* igen.h (insn_specifying_widths), igen.c (main): New option -W.
  	Indicates that the instruction field of the table is specifying
 	bit widths instead of bit offsets.
	* ld-insn.c (parse_insn_format): Parse instruction fields
 	specifying widths.

	* misc.c (a2i): Allow binary numbers to be specified using the
 	syntax 0bNNNN.
	* ld-insn.c: Allow such numbers to appear in the instruction
 	format.

	* table.c (table_entry_read): Make // a valid comment character.
	(table_entry_read): Skip lines containing a leading " - these may
 	eventually be used in a disasembler.

Fri Feb 14 15:23:15 1997  Andrew Cagney  <cagney@critters.cygnus.com>

	* filter.c, filter.h, gen-engine.c, gen-engine.h, gen-icache.c,
 	gen-icache.h, gen-idecode.c, gen-idecode.h, gen-itable.c,
 	gen-itable.h, gen-model.c, gen-model.h, gen-semantics.c,
 	gen-semantics.h, gen-support.c, gen-support.h, igen.c, igen.h,
 	ld-cache.c, ld-cache.h, ld-decode.c, ld-decode.h, ld-insn.c,
 	ld-insn.h, lf.c, lf.h, misc.c, misc.h, table.c, table.h: Copy in
 	from the ../ppc directory.

	* filter_host.c, filter_host.h: Copy in from the ../ppc directory
 	renaming from filter_filename.[hc]