[deliverable/binutils-gdb.git] / sim / aarch64 / ChangeLog

2017-02-25  Jim Wilson  <jim.wilson@linaro.org>

	* simulator.c (do_vec_SMOV_into_scalar): New.
	(do_vec_UMOV_into_scalar): Renamed from do_vec_MOV_into_scalar.
	Rewritten.
	(do_vec_UMOV): Merged into do_vec_UMOV_into_scalar and deleted.
	(do_vec_op1): Move do_vec_TRN call and do_vec_UZP call.  Add
	do_vec_SMOV_into_scalar call.  Delete do_vec_MOV_into_scalar and
	do_vec_UMOV calls.  Add do_vec_UMOV_into_scalar call.

	* simulator.c (popcount): New.
	(do_vec_CNT): New.
	(do_vec_op1): Add do_vec_CNT call.

2017-02-19  Jim Wilson  <jim.wilson@linaro.org>

	* simulator.c (do_vec_ADDV): Mov val declaration inside each case,
	with type set to input type size.
	(do_vec_xtl): Change bias from 3 to 4 for byte case.

2017-02-14  Jim Wilson  <jim.wilson@linaro.org>

	* simulator.c (do_vec_MLA): Rewrite switch body.

	* simulator.c (do_vec_bit): Change loop limits from 16 and 8 to 4 and
	2.  Move test_false if inside loop.  Fix logic for computing result
	stored to vd.

	* simulator.c: (LDn_STn_SINGLE_LANE_AND_SIZE): New.
	(do_vec_LDn_single, do_vec_STn_single): New.
	(do_vec_LDnR): Add and set new nregs var.  Replace switch on nregs with
	loop over nregs using new var n.  Add n times size to address in loop.
	Add n to vd in loop.
	(do_vec_load_store): Add comment for instruction bit 24.  New var
	single to hold instruction bit 24.  Add new code to use single.  Move
	ldnr support inside single if statements.  Fix ldnr register counts
	inside post if statement.  Change HALT_NYI calls to HALT_UNALLOC.

2017-01-23  Jim Wilson  <jim.wilson@linaro.org>

	* simulator.c (do_vec_compare): Add case 0x23 for CMTST.

2017-01-17  Jim Wilson  <jim.wilson@linaro.org>

	* simulator.c (do_vec_ADDV): Call aarch64_set_vec_u64 instead of
	aarch64_set_reg_u64.  In case 2, call HALT_UNALLOC if not full.  In
	case 3, call HALT_UNALLOC unconditionally.
	(do_vec_XTN): Delete shifts.  In case 2, change index from i + 4 to
	i + 2.  Delete if on bias, change index to i + bias * X.

2017-01-09  Jim Wilson  <jim.wilson@linaro.org>

	* simulator.c (do_vec_UZP): Rewrite.

2017-01-04  Jim Wilson  <jim.wilson@linaro.org>

	* cpustate.c: Include math.h.
	(aarch64_set_FP_float): Use signbit to check for signed zero.
	(aarch64_set_FP_double): Likewise.
	* simulator.c (do_vec_MOV_immediate, case 0x8): Add missing break.
	(do_vec_mul): In all DO_VEC_WIDENING_MUL calls, make second and fourth
	args same size as third arg.
	(fmaxnm): Use isnan instead of fpclassify.
	(fminnm, dmaxnm, dminnm): Likewise.
	(do_vec_MLS): Reverse order of subtraction operands.
	(dexSimpleFPCondSelect): Call aarch64_get_FP_double or
	aarch64_get_FP_float to get source register contents.
	(UINT_MIN, ULONG_MIN, FLOAT_UINT_MAX, FLOAT_UINT_MIN,
	DOUBLE_UINT_MAX, DOUBLE_UINT_MIN, FLOAT_ULONG_MAX, FLOAT_ULONG_MIN,
	DOUBLE_ULONG_MAX, DOUBLE_ULONG_MIN): New.
	(do_fcvtzu): Use ULONG instead of LONG, and UINT instead of INT in
	raise_exception calls.

2016-12-21  Jim Wilson  <jim.wilson@linaro.org>

	* simulator.c (set_flags_for_float_compare): Add code to handle Inf.
	Add comment to document NaN issue.
	(set_flags_for_double_compare): Likewise.

2016-12-13  Jim Wilson  <jim.wilson@linaro.org>

	* simulator.c (NEG, POS): Move before set_flags_for_add64.
	(set_flags_for_add64): Replace with a modified copy of
	set_flags_for_sub64.

2016-12-03  Jim Wilson  <jim.wilson@linaro.org>

	* simulator.c (tbnz, tbz): Cast 1 to uint64_t before shifting.
	(dexTestBranchImmediate): Shift high bit of pos by 5 not 4.

2016-12-01  Jim Wilson  <jim.wilson@linaro.org>

	* simulator.c (fsturs): Switch use of rn and st variables.
	(fsturd, fsturq): Likewise

2016-08-15  Mike Frysinger  <vapier@gentoo.org>

	* interp.c: Include bfd.h.
	(symcount, symtab, aarch64_get_sym_value): Delete.
	(remove_useless_symbols): Change count type to long.
	(aarch64_get_func): Add SIM_DESC to arg list.  Add symcount
	and symtab local variables.
	(sim_create_inferior): Delete storage.  Replace symbol code
	with a call to trace_load_symbols.
	* memory.c: Delete bfd.h, elf/internal.h, and elf/common.h
	includes.
	(aarch64_get_heap_start): Change aarch64_get_sym_value to
	trace_sym_value.
	* memory.h: Delete bfd.h include.
	(mem_add_blk): Delete unused prototype.
	* simulator.c (bl, blr): Pass SIM_DESC to aarch64_get_func.
	* simulator.c (aarch64_get_func): Add SIM_DESC to arg list.
	(aarch64_get_sym_value): Delete.

2016-08-12  Nick Clifton  <nickc@redhat.com>

	* simulator.c (aarch64_step): Revert pervious delta.
	(aarch64_run): Call sim_events_tick after each
	instruction is simulated, and if necessary call
	sim_events_process.
	* simulator.h: Revert previous delta.

2016-08-11  Nick Clifton  <nickc@redhat.com>

	* interp.c (sim_create_inferior): Allow for being called with a
	NULL abfd parameter.  If a bfd is provided, initialise the sim
	with that start address.
	* simulator.c (HALT_NYI): Just print out the numeric value of the
	instruction when not tracing.
	(aarch64_step): Change from static to global.
	* simulator.h: Add a prototype for aarch64_step().

2016-07-27  Alan Modra  <amodra@gmail.com>

	* memory.c: Don't include libbfd.h.

2016-07-21  Nick Clifton  <nickc@redhat.com>

	* simulator.c (fsqrts): Use sqrtf rather than sqrt.

2016-06-30  Jim Wilson  <jim.wilson@linaro.org>

	* cpustate.h: Include config.h.
	(union GRegisterValue): Add WORDS_BIGENDIAN check.  For big endian code
	use anonymous structs to align members.
	* simulator.c (aarch64_step): Use sim_core_read_buffer and
	endian_le2h_4 to read instruction from pc.

2016-05-06  Nick Clifton  <nickc@redhat.com>

	* simulator.c (do_FMLA_by_element): New function.
	(do_vec_op2): Call it.

2016-04-27  Nick Clifton  <nickc@redhat.com>

	* simulator.c: Add TRACE_DECODE statements to all emulation
	functions.

2016-03-30  Nick Clifton  <nickc@redhat.com>

	* cpustate.c (aarch64_set_reg_s32): New function.
	(aarch64_set_reg_u32): New function.
	(aarch64_get_FP_half): Place half precision value into the correct
	slot of the union.
	(aarch64_set_FP_half): Likewise.
	* cpustate.h: Add prototypes for aarch64_set_reg_s32 and
	aarch64_set_reg_u32.
	* memory.c (FETCH_FUNC): Cast the read value to the access type
	before converting it to the return type.  Rename to FETCH_FUNC64.
	(FETCH_FUNC32): New macro.  Duplicates FETCH_FUNC64 but for 32-bit
	accesses.  Use for 32-bit memory access functions.
	* simulator.c (ldrsb_wb): Use sign extension not zero extension.
	(ldrb_scale_ext, ldrsh32_abs, ldrsh32_wb): Likewise.
	(ldrsh32_scale_ext, ldrsh_abs, ldrsh64_wb): Likewise.
	(ldrsh_scale_ext, ldrsw_abs): Likewise.
	(ldrh32_abs): Store 32 bit value not 64-bits.
	(ldrh32_wb, ldrh32_scale_ext): Likewise.
	(do_vec_MOV_immediate): Fix computation of val.
	(do_vec_MVNI): Likewise.
	(DO_VEC_WIDENING_MUL): New macro.
	(do_vec_mull): Use new macro.
	(do_vec_mul): Use new macro.
	(do_vec_MLA): Read values before writing.
	(do_vec_xtl): Likewise.
	(do_vec_SSHL): Select correct shift value.
	(do_vec_USHL): Likewise.
	(do_scalar_UCVTF): New function.
	(do_scalar_vec): Call new function.
	(store_pair_u64): Treat reads of SP as reads of XZR.

2016-03-29  Nick Clifton  <nickc@redhat.com>

	* cpustate.c: Remove space after asterisk in function parameters.
	* decode.h (greg): Delete unused function.
	(vreg, shift, extension, scaling, writeback, condcode): Likewise.
	* simulator.c: Use INSTR macro in more places.
	(HALT_NYI): Use sim_io_eprintf in place of fprintf.
	Remove extraneous whitespace.

2016-03-23  Nick Clifton  <nickc@redhat.com>

	* cpustate.c (aarch64_get_FP_half): New function.  Read a vector
	register as a half precision floating point number.
	(aarch64_set_FP_half): New function.  Similar, but for setting
	a half precision register.
	(aarch64_get_thread_id): New function.  Returns the value of the
	CPU's TPIDR register.
	(aarch64_get_FPCR): New function.  Returns the value of the CPU's
	floating point control register.
	(aarch64_set_FPCR): New function.  Set the value of the CPU's FPCR
	register.
	* cpustate.h: Add prototypes for new functions.
	* sim-main.h (struct _sim_cpu): Add FPCR and tpidr fields.
	* memory.c: Use unaligned core access functions for all memory
	reads and writes.
	* simulator.c (HALT_NYI): Generate an error message if tracing
	will not tell the user why the simulator is halting.
	(HALT_UNREACHABLE): Delete.  Delete (unneeded) uses of the macro.
	(INSTR): New time-saver macro.
	(fldrb_abs): New function.  Loads an 8-bit value using a scaled
	offset.
	(fldrh_abs): New function.  Likewise for 16-bit values.
	(do_vec_SSHL): Allow for negative shift values.
	(do_vec_USHL): Likewise.
	(do_vec_SHL): Correct computation of shift amount.
	(do_vec_SSHR_USHR): Correct decision of signed vs unsigned
	shifts and computation of shift value.
	(clz): New function.  Counts leading zero bits.
	(do_vec_CLZ): New function.  Implements CLZ (vector).
	(do_vec_MOV_element): Call do_vec_CLZ.
	(dexSimpleFPCondCompare): Implement.
	(do_FCVT_half_to_single): New function.  Implements one of the
	FCVT operations.
	(do_FCVT_half_to_double): New function.  Likewise.
	(do_FCVT_single_to_half): New function.  Likewise.
	(do_FCVT_double_to_half): New function.  Likewise.
	(dexSimpleFPDataProc1Source): Call new FCVT functions.
	(do_scalar_SHL): Handle negative shifts.
	(do_scalar_shift): Handle SSHR.
	(do_scalar_USHL): New function.
	(do_double_add): Simplify to just performing a double precision
	add operation.  Move remaining code into...
	(do_scalar_vec): ... New function.
	(dexLoadUnsignedImmediate): Call new fldrb_abs and fldrh_abs
	functions.
	(system_get): Add support for TPIDR, CTR, FPCR, FPSR and CPSR
	registers.
	(system_set): New function.
	(do_MSR_immediate): New function.  Stub for now.
	(do_MSR_reg): New function.  Likewise. Partially implements MSR
	instruction.
	(do_SYS): New function.  Stub for now,
	(dexSystem): Call new functions.

2016-03-18  Nick Clifton  <nickc@redhat.com>

	* cpustate.c: Remove spurious spaces from TRACE strings.
	Print hex equivalents of floats and doubles.
	Check element number against array size when accessing vector
	registers.
	(GET_VEC_ELEMENT): Fix off by one error checking for an invalid
	element index.
	(SET_VEC_ELEMENT): Likewise.
	(GET_VEC_ELEMENT): And fix thinko using macro arguments.

	* memory.c: Trace memory reads when --trace-memory is enabled.
	Remove float and double load and store functions.
	* memory.h (aarch64_get_mem_float): Delete prototype.
	(aarch64_get_mem_double): Likewise.
	(aarch64_set_mem_float): Likewise.
	(aarch64_set_mem_double): Likewise.
	* simulator (IS_SET): Always return either 0 or 1.
	(IS_CLEAR): Likewise.
	(fldrs_pcrel): Load and store floats using 32-bit memory accesses
	and doubles using 64-bit memory accesses.
	(fldrd_pcrel, fldrs_wb, fldrs_abs, fldrs_scale_ext): Likewise.
	(fldrd_wb, fldrd_abs, fsturs, fsturd, fldurs, fldurd): Likewise.
	(fstrs_abs, fstrs_wb, fstrs_scale_ext, fstrd_abs): Likewise.
	(fstrd_wb, fstrd_scale_ext, store_pair_float): Likewise.
	(store_pair_double, load_pair_float, load_pair_double): Likewise.
	(do_vec_MUL_by_element): New function.
	(do_vec_op2): Call do_vec_MUL_by_element.
	(do_scalar_NEG): New function.
	(do_double_add): Call do_scalar_NEG.

2016-03-03  Nick Clifton  <nickc@redhat.com>

	* simulator.c (set_flags_for_sub32): Correct type of signbit.
	(CondCompare): Swap interpretation of bit 30.
	(DO_ADDP): Delete macro.
	(do_vec_ADDP): Copy source registers before starting to update
	destination register.
	(do_vec_FADDP): Likewise.
	(do_vec_load_store): Fix computation of sizeof_operation.
	(rbit64): Fix type of constant.
	(aarch64_step): When displaying insn value, display all 32 bits.

2016-01-10  Mike Frysinger  <vapier@gentoo.org>

	* config.in, configure: Regenerate.

2016-01-10  Mike Frysinger  <vapier@gentoo.org>

	* configure: Regenerate.

2016-01-10  Mike Frysinger  <vapier@gentoo.org>

	* configure.ac (SIM_AC_OPTION_ENVIRONMENT): Delete call.
	* configure: Regenerate.

2016-01-10  Mike Frysinger  <vapier@gentoo.org>

	* configure: Regenerate.

2016-01-10  Mike Frysinger  <vapier@gentoo.org>

	* configure: Regenerate.

2016-01-10  Mike Frysinger  <vapier@gentoo.org>

	* configure.ac (SIM_AC_OPTION_INLINE): Delete call.
	* configure: Regenerate.

2016-01-10  Mike Frysinger  <vapier@gentoo.org>

	* configure: Regenerate.

2016-01-10  Mike Frysinger  <vapier@gentoo.org>

	* configure: Regenerate.

2016-01-09  Mike Frysinger  <vapier@gentoo.org>

	* config.in, configure: Regenerate.

2016-01-06  Mike Frysinger  <vapier@gentoo.org>

	* interp.c (sim_create_inferior): Mark argv and env const.
	(sim_open): Mark argv const.

2016-01-05  Mike Frysinger  <vapier@gentoo.org>

	* interp.c: Delete dis-asm.h include.
	(info, opbuf, op_printf, aarch64_print_insn, sim_dis_read): Delete.
	(sim_create_inferior): Delete disassemble init logic.
	(OPTION_DISAS, aarch64_option_handler, aarch64_options): Delete.
	(sim_open): Delete sim_add_option_table call.
	* memory.c (mem_error): Delete disas check.
	* simulator.c: Delete dis-asm.h include.
	(disas): Delete.
	(HALT_UNALLOC): Replace disassembly logic with TRACE_DISASM.
	(HALT_NYI): Likewise.
	(handle_halt): Delete disas call.
	(aarch64_step): Replace disas logic with TRACE_DISASM.
	* simulator.h: Delete dis-asm.h include.
	(aarch64_print_insn): Delete.

2016-01-04  Mike Frysinger  <vapier@gentoo.org>

	* simulator.c (MAX, MIN): Delete.
	(do_vec_maxv): Change MAX to max and MIN to min.
	(do_vec_fminmaxV): Likewise.

2016-01-04  Tristan Gingold  <gingold@adacore.com>

	* simulator.c: Remove syscall.h include.

2016-01-04  Mike Frysinger  <vapier@gentoo.org>

	* configure: Regenerate.

2016-01-03  Mike Frysinger  <vapier@gentoo.org>

	* configure.ac (SIM_AC_OPTION_HOSTENDIAN): Delete.
	* configure: Regenerate.

2016-01-02  Mike Frysinger  <vapier@gentoo.org>

	* configure: Regenerate.

2015-12-27  Mike Frysinger  <vapier@gentoo.org>

	* interp.c (sim_dis_read): Change private_data to application_data.
	(sim_create_inferior): Likewise.

2015-12-27  Mike Frysinger  <vapier@gentoo.org>

	* Makefile.in (SIM_OBJS): Delete sim-hload.o.

2015-12-26  Mike Frysinger  <vapier@gentoo.org>

	* config.in, configure: Regenerate.

2015-12-26  Mike Frysinger  <vapier@gentoo.org>

	* interp.c (sim_create_inferior): Update comment and argv check.

2015-12-14  Nick Clifton  <nickc@redhat.com>

	* simulator.c (system_get): New function.  Provides read
	access to the dczid system register.
	(do_mrs): New function - implements the MRS instruction.
	(dexSystem): Call do_mrs for the MRS instruction.  Halt on
	unimplemented system instructions.

2015-11-24  Nick Clifton  <nickc@redhat.com>

	* configure.ac: New configure template.
	* aclocal.m4: Generate.
	* config.in: Generate.
	* configure: Generate.
	* cpustate.c: New file - functions for accessing AArch64 registers.
	* cpustate.h: New header.
	* decode.h: New header.
	* interp.c: New file - interface between GDB and simulator.
	* Makefile.in: New makefile template.
	* memory.c: New file - functions for simulating aarch64 memory
	accesses.
	* memory.h: New header.
	* sim-main.h: New header.
	* simulator.c: New file - aarch64 simulator functions.
	* simulator.h: New header.
Commit	Line	Data
	1	2017-02-25 Jim Wilson <jim.wilson@linaro.org>
	2
	3	* simulator.c (do_vec_SMOV_into_scalar): New.
	4	(do_vec_UMOV_into_scalar): Renamed from do_vec_MOV_into_scalar.
	5	Rewritten.
	6	(do_vec_UMOV): Merged into do_vec_UMOV_into_scalar and deleted.
	7	(do_vec_op1): Move do_vec_TRN call and do_vec_UZP call. Add
	8	do_vec_SMOV_into_scalar call. Delete do_vec_MOV_into_scalar and
	9	do_vec_UMOV calls. Add do_vec_UMOV_into_scalar call.
	10
	11	* simulator.c (popcount): New.
	12	(do_vec_CNT): New.
	13	(do_vec_op1): Add do_vec_CNT call.
	14
	15	2017-02-19 Jim Wilson <jim.wilson@linaro.org>
	16
	17	* simulator.c (do_vec_ADDV): Mov val declaration inside each case,
	18	with type set to input type size.
	19	(do_vec_xtl): Change bias from 3 to 4 for byte case.
	20
	21	2017-02-14 Jim Wilson <jim.wilson@linaro.org>
	22
	23	* simulator.c (do_vec_MLA): Rewrite switch body.
	24
	25	* simulator.c (do_vec_bit): Change loop limits from 16 and 8 to 4 and
	26	2. Move test_false if inside loop. Fix logic for computing result
	27	stored to vd.
	28
	29	* simulator.c: (LDn_STn_SINGLE_LANE_AND_SIZE): New.
	30	(do_vec_LDn_single, do_vec_STn_single): New.
	31	(do_vec_LDnR): Add and set new nregs var. Replace switch on nregs with
	32	loop over nregs using new var n. Add n times size to address in loop.
	33	Add n to vd in loop.
	34	(do_vec_load_store): Add comment for instruction bit 24. New var
	35	single to hold instruction bit 24. Add new code to use single. Move
	36	ldnr support inside single if statements. Fix ldnr register counts
	37	inside post if statement. Change HALT_NYI calls to HALT_UNALLOC.
	38
	39	2017-01-23 Jim Wilson <jim.wilson@linaro.org>
	40
	41	* simulator.c (do_vec_compare): Add case 0x23 for CMTST.
	42
	43	2017-01-17 Jim Wilson <jim.wilson@linaro.org>
	44
	45	* simulator.c (do_vec_ADDV): Call aarch64_set_vec_u64 instead of
	46	aarch64_set_reg_u64. In case 2, call HALT_UNALLOC if not full. In
	47	case 3, call HALT_UNALLOC unconditionally.
	48	(do_vec_XTN): Delete shifts. In case 2, change index from i + 4 to
	49	i + 2. Delete if on bias, change index to i + bias * X.
	50
	51	2017-01-09 Jim Wilson <jim.wilson@linaro.org>
	52
	53	* simulator.c (do_vec_UZP): Rewrite.
	54
	55	2017-01-04 Jim Wilson <jim.wilson@linaro.org>
	56
	57	* cpustate.c: Include math.h.
	58	(aarch64_set_FP_float): Use signbit to check for signed zero.
	59	(aarch64_set_FP_double): Likewise.
	60	* simulator.c (do_vec_MOV_immediate, case 0x8): Add missing break.
	61	(do_vec_mul): In all DO_VEC_WIDENING_MUL calls, make second and fourth
	62	args same size as third arg.
	63	(fmaxnm): Use isnan instead of fpclassify.
	64	(fminnm, dmaxnm, dminnm): Likewise.
	65	(do_vec_MLS): Reverse order of subtraction operands.
	66	(dexSimpleFPCondSelect): Call aarch64_get_FP_double or
	67	aarch64_get_FP_float to get source register contents.
	68	(UINT_MIN, ULONG_MIN, FLOAT_UINT_MAX, FLOAT_UINT_MIN,
	69	DOUBLE_UINT_MAX, DOUBLE_UINT_MIN, FLOAT_ULONG_MAX, FLOAT_ULONG_MIN,
	70	DOUBLE_ULONG_MAX, DOUBLE_ULONG_MIN): New.
	71	(do_fcvtzu): Use ULONG instead of LONG, and UINT instead of INT in
	72	raise_exception calls.
	73
	74	2016-12-21 Jim Wilson <jim.wilson@linaro.org>
	75
	76	* simulator.c (set_flags_for_float_compare): Add code to handle Inf.
	77	Add comment to document NaN issue.
	78	(set_flags_for_double_compare): Likewise.
	79
	80	2016-12-13 Jim Wilson <jim.wilson@linaro.org>
	81
	82	* simulator.c (NEG, POS): Move before set_flags_for_add64.
	83	(set_flags_for_add64): Replace with a modified copy of
	84	set_flags_for_sub64.
	85
	86	2016-12-03 Jim Wilson <jim.wilson@linaro.org>
	87
	88	* simulator.c (tbnz, tbz): Cast 1 to uint64_t before shifting.
	89	(dexTestBranchImmediate): Shift high bit of pos by 5 not 4.
	90
	91	2016-12-01 Jim Wilson <jim.wilson@linaro.org>
	92
	93	* simulator.c (fsturs): Switch use of rn and st variables.
	94	(fsturd, fsturq): Likewise
	95
	96	2016-08-15 Mike Frysinger <vapier@gentoo.org>
	97
	98	* interp.c: Include bfd.h.
	99	(symcount, symtab, aarch64_get_sym_value): Delete.
	100	(remove_useless_symbols): Change count type to long.
	101	(aarch64_get_func): Add SIM_DESC to arg list. Add symcount
	102	and symtab local variables.
	103	(sim_create_inferior): Delete storage. Replace symbol code
	104	with a call to trace_load_symbols.
	105	* memory.c: Delete bfd.h, elf/internal.h, and elf/common.h
	106	includes.
	107	(aarch64_get_heap_start): Change aarch64_get_sym_value to
	108	trace_sym_value.
	109	* memory.h: Delete bfd.h include.
	110	(mem_add_blk): Delete unused prototype.
	111	* simulator.c (bl, blr): Pass SIM_DESC to aarch64_get_func.
	112	* simulator.c (aarch64_get_func): Add SIM_DESC to arg list.
	113	(aarch64_get_sym_value): Delete.
	114
	115	2016-08-12 Nick Clifton <nickc@redhat.com>
	116
	117	* simulator.c (aarch64_step): Revert pervious delta.
	118	(aarch64_run): Call sim_events_tick after each
	119	instruction is simulated, and if necessary call
	120	sim_events_process.
	121	* simulator.h: Revert previous delta.
	122
	123	2016-08-11 Nick Clifton <nickc@redhat.com>
	124
	125	* interp.c (sim_create_inferior): Allow for being called with a
	126	NULL abfd parameter. If a bfd is provided, initialise the sim
	127	with that start address.
	128	* simulator.c (HALT_NYI): Just print out the numeric value of the
	129	instruction when not tracing.
	130	(aarch64_step): Change from static to global.
	131	* simulator.h: Add a prototype for aarch64_step().
	132
	133	2016-07-27 Alan Modra <amodra@gmail.com>
	134
	135	* memory.c: Don't include libbfd.h.
	136
	137	2016-07-21 Nick Clifton <nickc@redhat.com>
	138
	139	* simulator.c (fsqrts): Use sqrtf rather than sqrt.
	140
	141	2016-06-30 Jim Wilson <jim.wilson@linaro.org>
	142
	143	* cpustate.h: Include config.h.
	144	(union GRegisterValue): Add WORDS_BIGENDIAN check. For big endian code
	145	use anonymous structs to align members.
	146	* simulator.c (aarch64_step): Use sim_core_read_buffer and
	147	endian_le2h_4 to read instruction from pc.
	148
	149	2016-05-06 Nick Clifton <nickc@redhat.com>
	150
	151	* simulator.c (do_FMLA_by_element): New function.
	152	(do_vec_op2): Call it.
	153
	154	2016-04-27 Nick Clifton <nickc@redhat.com>
	155
	156	* simulator.c: Add TRACE_DECODE statements to all emulation
	157	functions.
	158
	159	2016-03-30 Nick Clifton <nickc@redhat.com>
	160
	161	* cpustate.c (aarch64_set_reg_s32): New function.
	162	(aarch64_set_reg_u32): New function.
	163	(aarch64_get_FP_half): Place half precision value into the correct
	164	slot of the union.
	165	(aarch64_set_FP_half): Likewise.
	166	* cpustate.h: Add prototypes for aarch64_set_reg_s32 and
	167	aarch64_set_reg_u32.
	168	* memory.c (FETCH_FUNC): Cast the read value to the access type
	169	before converting it to the return type. Rename to FETCH_FUNC64.
	170	(FETCH_FUNC32): New macro. Duplicates FETCH_FUNC64 but for 32-bit
	171	accesses. Use for 32-bit memory access functions.
	172	* simulator.c (ldrsb_wb): Use sign extension not zero extension.
	173	(ldrb_scale_ext, ldrsh32_abs, ldrsh32_wb): Likewise.
	174	(ldrsh32_scale_ext, ldrsh_abs, ldrsh64_wb): Likewise.
	175	(ldrsh_scale_ext, ldrsw_abs): Likewise.
	176	(ldrh32_abs): Store 32 bit value not 64-bits.
	177	(ldrh32_wb, ldrh32_scale_ext): Likewise.
	178	(do_vec_MOV_immediate): Fix computation of val.
	179	(do_vec_MVNI): Likewise.
	180	(DO_VEC_WIDENING_MUL): New macro.
	181	(do_vec_mull): Use new macro.
	182	(do_vec_mul): Use new macro.
	183	(do_vec_MLA): Read values before writing.
	184	(do_vec_xtl): Likewise.
	185	(do_vec_SSHL): Select correct shift value.
	186	(do_vec_USHL): Likewise.
	187	(do_scalar_UCVTF): New function.
	188	(do_scalar_vec): Call new function.
	189	(store_pair_u64): Treat reads of SP as reads of XZR.
	190
	191	2016-03-29 Nick Clifton <nickc@redhat.com>
	192
	193	* cpustate.c: Remove space after asterisk in function parameters.
	194	* decode.h (greg): Delete unused function.
	195	(vreg, shift, extension, scaling, writeback, condcode): Likewise.
	196	* simulator.c: Use INSTR macro in more places.
	197	(HALT_NYI): Use sim_io_eprintf in place of fprintf.
	198	Remove extraneous whitespace.
	199
	200	2016-03-23 Nick Clifton <nickc@redhat.com>
	201
	202	* cpustate.c (aarch64_get_FP_half): New function. Read a vector
	203	register as a half precision floating point number.
	204	(aarch64_set_FP_half): New function. Similar, but for setting
	205	a half precision register.
	206	(aarch64_get_thread_id): New function. Returns the value of the
	207	CPU's TPIDR register.
	208	(aarch64_get_FPCR): New function. Returns the value of the CPU's
	209	floating point control register.
	210	(aarch64_set_FPCR): New function. Set the value of the CPU's FPCR
	211	register.
	212	* cpustate.h: Add prototypes for new functions.
	213	* sim-main.h (struct _sim_cpu): Add FPCR and tpidr fields.
	214	* memory.c: Use unaligned core access functions for all memory
	215	reads and writes.
	216	* simulator.c (HALT_NYI): Generate an error message if tracing
	217	will not tell the user why the simulator is halting.
	218	(HALT_UNREACHABLE): Delete. Delete (unneeded) uses of the macro.
	219	(INSTR): New time-saver macro.
	220	(fldrb_abs): New function. Loads an 8-bit value using a scaled
	221	offset.
	222	(fldrh_abs): New function. Likewise for 16-bit values.
	223	(do_vec_SSHL): Allow for negative shift values.
	224	(do_vec_USHL): Likewise.
	225	(do_vec_SHL): Correct computation of shift amount.
	226	(do_vec_SSHR_USHR): Correct decision of signed vs unsigned
	227	shifts and computation of shift value.
	228	(clz): New function. Counts leading zero bits.
	229	(do_vec_CLZ): New function. Implements CLZ (vector).
	230	(do_vec_MOV_element): Call do_vec_CLZ.
	231	(dexSimpleFPCondCompare): Implement.
	232	(do_FCVT_half_to_single): New function. Implements one of the
	233	FCVT operations.
	234	(do_FCVT_half_to_double): New function. Likewise.
	235	(do_FCVT_single_to_half): New function. Likewise.
	236	(do_FCVT_double_to_half): New function. Likewise.
	237	(dexSimpleFPDataProc1Source): Call new FCVT functions.
	238	(do_scalar_SHL): Handle negative shifts.
	239	(do_scalar_shift): Handle SSHR.
	240	(do_scalar_USHL): New function.
	241	(do_double_add): Simplify to just performing a double precision
	242	add operation. Move remaining code into...
	243	(do_scalar_vec): ... New function.
	244	(dexLoadUnsignedImmediate): Call new fldrb_abs and fldrh_abs
	245	functions.
	246	(system_get): Add support for TPIDR, CTR, FPCR, FPSR and CPSR
	247	registers.
	248	(system_set): New function.
	249	(do_MSR_immediate): New function. Stub for now.
	250	(do_MSR_reg): New function. Likewise. Partially implements MSR
	251	instruction.
	252	(do_SYS): New function. Stub for now,
	253	(dexSystem): Call new functions.
	254
	255	2016-03-18 Nick Clifton <nickc@redhat.com>
	256
	257	* cpustate.c: Remove spurious spaces from TRACE strings.
	258	Print hex equivalents of floats and doubles.
	259	Check element number against array size when accessing vector
	260	registers.
	261	(GET_VEC_ELEMENT): Fix off by one error checking for an invalid
	262	element index.
	263	(SET_VEC_ELEMENT): Likewise.
	264	(GET_VEC_ELEMENT): And fix thinko using macro arguments.
	265
	266	* memory.c: Trace memory reads when --trace-memory is enabled.
	267	Remove float and double load and store functions.
	268	* memory.h (aarch64_get_mem_float): Delete prototype.
	269	(aarch64_get_mem_double): Likewise.
	270	(aarch64_set_mem_float): Likewise.
	271	(aarch64_set_mem_double): Likewise.
	272	* simulator (IS_SET): Always return either 0 or 1.
	273	(IS_CLEAR): Likewise.
	274	(fldrs_pcrel): Load and store floats using 32-bit memory accesses
	275	and doubles using 64-bit memory accesses.
	276	(fldrd_pcrel, fldrs_wb, fldrs_abs, fldrs_scale_ext): Likewise.
	277	(fldrd_wb, fldrd_abs, fsturs, fsturd, fldurs, fldurd): Likewise.
	278	(fstrs_abs, fstrs_wb, fstrs_scale_ext, fstrd_abs): Likewise.
	279	(fstrd_wb, fstrd_scale_ext, store_pair_float): Likewise.
	280	(store_pair_double, load_pair_float, load_pair_double): Likewise.
	281	(do_vec_MUL_by_element): New function.
	282	(do_vec_op2): Call do_vec_MUL_by_element.
	283	(do_scalar_NEG): New function.
	284	(do_double_add): Call do_scalar_NEG.
	285
	286	2016-03-03 Nick Clifton <nickc@redhat.com>
	287
	288	* simulator.c (set_flags_for_sub32): Correct type of signbit.
	289	(CondCompare): Swap interpretation of bit 30.
	290	(DO_ADDP): Delete macro.
	291	(do_vec_ADDP): Copy source registers before starting to update
	292	destination register.
	293	(do_vec_FADDP): Likewise.
	294	(do_vec_load_store): Fix computation of sizeof_operation.
	295	(rbit64): Fix type of constant.
	296	(aarch64_step): When displaying insn value, display all 32 bits.
	297
	298	2016-01-10 Mike Frysinger <vapier@gentoo.org>
	299
	300	* config.in, configure: Regenerate.
	301
	302	2016-01-10 Mike Frysinger <vapier@gentoo.org>
	303
	304	* configure: Regenerate.
	305
	306	2016-01-10 Mike Frysinger <vapier@gentoo.org>
	307
	308	* configure.ac (SIM_AC_OPTION_ENVIRONMENT): Delete call.
	309	* configure: Regenerate.
	310
	311	2016-01-10 Mike Frysinger <vapier@gentoo.org>
	312
	313	* configure: Regenerate.
	314
	315	2016-01-10 Mike Frysinger <vapier@gentoo.org>
	316
	317	* configure: Regenerate.
	318
	319	2016-01-10 Mike Frysinger <vapier@gentoo.org>
	320
	321	* configure.ac (SIM_AC_OPTION_INLINE): Delete call.
	322	* configure: Regenerate.
	323
	324	2016-01-10 Mike Frysinger <vapier@gentoo.org>
	325
	326	* configure: Regenerate.
	327
	328	2016-01-10 Mike Frysinger <vapier@gentoo.org>
	329
	330	* configure: Regenerate.
	331
	332	2016-01-09 Mike Frysinger <vapier@gentoo.org>
	333
	334	* config.in, configure: Regenerate.
	335
	336	2016-01-06 Mike Frysinger <vapier@gentoo.org>
	337
	338	* interp.c (sim_create_inferior): Mark argv and env const.
	339	(sim_open): Mark argv const.
	340
	341	2016-01-05 Mike Frysinger <vapier@gentoo.org>
	342
	343	* interp.c: Delete dis-asm.h include.
	344	(info, opbuf, op_printf, aarch64_print_insn, sim_dis_read): Delete.
	345	(sim_create_inferior): Delete disassemble init logic.
	346	(OPTION_DISAS, aarch64_option_handler, aarch64_options): Delete.
	347	(sim_open): Delete sim_add_option_table call.
	348	* memory.c (mem_error): Delete disas check.
	349	* simulator.c: Delete dis-asm.h include.
	350	(disas): Delete.
	351	(HALT_UNALLOC): Replace disassembly logic with TRACE_DISASM.
	352	(HALT_NYI): Likewise.
	353	(handle_halt): Delete disas call.
	354	(aarch64_step): Replace disas logic with TRACE_DISASM.
	355	* simulator.h: Delete dis-asm.h include.
	356	(aarch64_print_insn): Delete.
	357
	358	2016-01-04 Mike Frysinger <vapier@gentoo.org>
	359
	360	* simulator.c (MAX, MIN): Delete.
	361	(do_vec_maxv): Change MAX to max and MIN to min.
	362	(do_vec_fminmaxV): Likewise.
	363
	364	2016-01-04 Tristan Gingold <gingold@adacore.com>
	365
	366	* simulator.c: Remove syscall.h include.
	367
	368	2016-01-04 Mike Frysinger <vapier@gentoo.org>
	369
	370	* configure: Regenerate.
	371
	372	2016-01-03 Mike Frysinger <vapier@gentoo.org>
	373
	374	* configure.ac (SIM_AC_OPTION_HOSTENDIAN): Delete.
	375	* configure: Regenerate.
	376
	377	2016-01-02 Mike Frysinger <vapier@gentoo.org>
	378
	379	* configure: Regenerate.
	380
	381	2015-12-27 Mike Frysinger <vapier@gentoo.org>
	382
	383	* interp.c (sim_dis_read): Change private_data to application_data.
	384	(sim_create_inferior): Likewise.
	385
	386	2015-12-27 Mike Frysinger <vapier@gentoo.org>
	387
	388	* Makefile.in (SIM_OBJS): Delete sim-hload.o.
	389
	390	2015-12-26 Mike Frysinger <vapier@gentoo.org>
	391
	392	* config.in, configure: Regenerate.
	393
	394	2015-12-26 Mike Frysinger <vapier@gentoo.org>
	395
	396	* interp.c (sim_create_inferior): Update comment and argv check.
	397
	398	2015-12-14 Nick Clifton <nickc@redhat.com>
	399
	400	* simulator.c (system_get): New function. Provides read
	401	access to the dczid system register.
	402	(do_mrs): New function - implements the MRS instruction.
	403	(dexSystem): Call do_mrs for the MRS instruction. Halt on
	404	unimplemented system instructions.
	405
	406	2015-11-24 Nick Clifton <nickc@redhat.com>
	407
	408	* configure.ac: New configure template.
	409	* aclocal.m4: Generate.
	410	* config.in: Generate.
	411	* configure: Generate.
	412	* cpustate.c: New file - functions for accessing AArch64 registers.
	413	* cpustate.h: New header.
	414	* decode.h: New header.
	415	* interp.c: New file - interface between GDB and simulator.
	416	* Makefile.in: New makefile template.
	417	* memory.c: New file - functions for simulating aarch64 memory
	418	accesses.
	419	* memory.h: New header.
	420	* sim-main.h: New header.
	421	* simulator.c: New file - aarch64 simulator functions.
	422	* simulator.h: New header.