Commit Graph

24 Commits

Author SHA1 Message Date
Nick Clifton 73cb0348b2 Add support for ARM v6 instructions.
* Makefile.in (SIM_EXTRA_CFLAGS): Add -lm.
	* armdefs.h (ARMdval, ARMfval): New types.
	(ARM_VFP_reg): New union.
	(struct ARMul_State): Add VFP_Reg and FPSCR fields.
	(VFP_fval, VFP_uword, VFP_sword, VFP_dval, VFP_dword): Accessor
	macros for the new VFP_Reg field.
	* armemu.c (handle_v6_insn): Add code to handle MOVW, MOVT,
	QADD16, QASX, QSAX, QSUB16, QADD8, QSUB8, UADD16, USUB16, UADD8,
	USUB8, SEL, REV, REV16, RBIT, BFC, BFI, SBFX and UBFX
	instructions.
	(handle_VFP_move): New function.
	(ARMul_Emulate16): Add checks for newly supported v6
	instructions.  Add support for VMRS, VMOV and MRC instructions.
	(Multiply64): Allow nRdHi == nRm and/or nRdLo == nRm when
	operating in v6 mode.
	* armemu.h (t_resolved): Define.
	* armsupp.c: Include math.h.
	(handle_VFP_xfer): New function.  Handles VMOV, VSTM, VSTR, VPUSH,
	VSTM, VLDM and VPOP instructions.
	(ARMul_LDC): Test for co-processor 10 or 11 and pass call to the
	new handle_VFP_xfer function.
	(ARMul_STC): Likewise.
	(handle_VFP_op): New function.  Handles VMLA, VMLS, VNMLA, VNMLS,
	VNMUL, VMUL, VADD, VSUB, VDIV, VMOV, VABS, VNEG, VSQRT, VCMP,
	VCMPE and VCVT instructions.
	(ARMul_CDP): Test for co-processor 10 or 11 and pass call to the
	new handle_VFP_op function.
	* thumbemu.c (tBIT, tBITS, ntBIT, ntBITS): New macros.
	(test_cond): New function.  Tests a condition and returns non-zero
	if the condition has been met.
	(handle_IT_block): New function.
	(in_IT_block): New function.
	(IT_block_allow): New function.
	(ThumbExpandImm): New function.
	(handle_T2_insn): New function.  Handles T2 thumb instructions.
	(handle_v6_thumb_insn): Add next_instr and pc parameters.
	(ARMul_ThumbDecode): Add support for IT blocks.  Add support for
	v6 instructions.
	* wrapper.c (sim_create_inferior): Detect a thumb address and call
	SETT appropriately.
2015-06-28 19:14:36 +01:00
Mike Frysinger 58b991b14e sim: arm: clean up misc warnings
Also delete a few unused funcs.
2015-03-30 12:58:23 -04:00
Nick Clifton 8d05292667 Add support for instruction level tracing to the ARM simulator.
* wrapper.c (op_print): New function.
	(sim_dis_read): New function.
	(print_insn): New function - disassembles the given instruction.
	(sim_trace): Note that tracing is now allowed.
	(sim_create_inferior): Default to emulating v6.
	Initialise the disassembler machinery.
	(sim_target_parse_command_line): Add support for -t -d and -z
	options.
	(sim_target_display_usage): Note existence of -d and -z options.
	(sim_open): Parse -t -d and -z options.
	* armemu.h: Add exports of trace, disas and trace_funcs.
	Add prototype for print_insn.
	* armemu.c (ARMul_Emulate26): Add tracing code.
	Delete unused variables.
	* thumbemu (handle_v6_thumb_insn): Delete unused variable Rd.
	Move Rm variable into switch cases.
	Add tracing code.

	* armcopro.c (XScale_cp15_init): Add a return value.
	(XScale_cp13_init): Likewise.
	(XScale_cp14_init): Likewise.
	(XScale_cp15_LDC): Delete unused function.
	(XScale_cp15_STC): Likewise.
	* maverick.c: Delete comment inside comment.
	(DSPInit): Delete unused function.
	(DSPMCR4): Fix compile time warning about missing parenthesis.
	(DSPMCR5): Likewise.
	(DSPCDP6): Delete unused variable opcode2.
2014-03-14 15:21:23 +00:00
David McQuillan b9366cf395 Prevent writes to R15 via LDR or LDM from changing the ARM/Thumb state in pre-v5 architectures.
PR sim/8388
	* armemu.c (WriteR15Load): New function.  Determines if the state
	can be changed upon a write to R15.
	(LoadMult): Use WriteR15Load.
	* armemu.h (WRITEDESTB): Use WriteR15Load.
2014-03-14 14:03:29 +00:00
Joel Brobecker 51b318dec8 [sim] Update old contact info in GPL license notices
sim/ChangeLog:

        Update old contact info in GPL license notices.
2012-12-19 07:18:22 +00:00
Joel Brobecker 3fd725ef34 Update sim copyright headers from GPLv2-or-later to GPLv3-or-later.
gdb/sim/ChangeLog:

        Update the non-FSF-copyrighted files in sim to GPLv3 or later.
2012-12-19 07:12:02 +00:00
Nick Clifton 380d9419c9 Update the address of the FSF organization 2005-05-12 07:36:59 +00:00
Nick Clifton f603c8fe44 Add Cirrus Maverick support to arm simulator 2003-03-20 12:25:07 +00:00
Nick Clifton 57165fb4bb Fix parameters passed to CPRead[13] and CPRead[14]. 2002-01-10 11:14:57 +00:00
Nick Clifton ff44f8e352 Add support for XScale's coprocessor access check register.
Fix formatting.
2001-10-18 12:20:49 +00:00
Nick Clifton 917bca4f21 Add support for disabling alignment checks when performing GDB interface
calls or SWI emulaiton routines.  (Alignment checking code has not yet been
contributed).
2001-02-28 01:04:24 +00:00
Nick Clifton 179ae6ea64 Fix definition of NEGBRANCH 2001-02-12 23:29:49 +00:00
Nick Clifton f1129fb8ff Add support for ARM's v5TE architecture and Intel's XScale extenstions 2000-11-30 01:55:12 +00:00
Nick Clifton 3943c96b07 Replace StrongARM property with v4 and v5 properties. 2000-09-15 23:55:50 +00:00
Alexandre Oliva 1e6b544a97 * armdefs.h (struct ARMul_State): Add is_StrongARM.
(ARM_Strong_Prop, STRONGARM): Define.
* arminit.c (ARMul_NewState): Reset is_StrongARM.
(ARMul_SelectProcessor): Set is_StrongARM.
* wrapper.c (sim_create_inferior): Use bfd machine type to
determine processor type to emulate.
* armemu.h (BUSUSEDINCPCS, BUSUSEDINCPCN): Don't increment PC
when emulating StrongARM.
2000-07-04 07:18:18 +00:00
Alexandre Oliva e063aa3bd8 * armemu.h (INSN_SIZE): New macro.
(SET_ABORT): Save CPSR in SPSR and set LR.
* armemu.c (ARMul_Emulate, isize): Set to INSN_SIZE.
(WriteR15, WriteSR15): Do not discard bit 1 in Thumb mode.
* arminit.c (ARMul_Abort): Use new SETABORT and INSN_SIZE.
2000-07-04 06:52:30 +00:00
Alexandre Oliva 892c6b9d8f * armemu.h (WRITEDESTB): New macro.
* armemu.c (ARMul_Emulate26, bl): Use WriteR15Branch() to
modify PC.  Moved the existing logic...
(WriteR15Branch): ... here.  New function.
(WriteR15, WriteSR15): Drop the two least significant bits.
(LoadSMult): Use WriteR15Branch() to modify PC.
(LoadMult): Use WRITEDESTB() instead of WRITEDEST().
2000-07-04 06:35:36 +00:00
Alexandre Oliva cf52c765b0 * armemu.h (GETSPSR): Call ARMul_GetSPSR().
* armsupp.c (ARMul_CPSRAltered): Zero out bits as they're
extracted from state->Cpsr, but preserve the unused bits.
(ARMul_GetCPSR): Get bits preserved in state->Cpsr.
(ARMul_GetSPSR, ARMul_FixCPSR): Use ARMul_GetCPSR() to
get the full CPSR word.
2000-07-04 06:19:29 +00:00
Alexandre Oliva 4ef2594f4e * armemu.h (PSR_FBITS, PSR_SBITS, PSR_XBITS, PSR_CBITS): New.
(SETPSR_F, SETPSR_S, SETPSR_X, SETPSR_C): New macros.
(SETPSR, SET_INTMODE, SETCC): Removed.
* armsupp.c (ARMul_FixCPSR, ARMul_FixSPSR): Do not test bit
mask.  Use SETPSR_* to modify PSR.
(ARMul_SetCPSR): Load all bits from value.
* armemu.c (ARMul_Emulate, msr): Do not test bit mask.
2000-07-04 06:06:30 +00:00
Alexandre Oliva fe47e8dfd3 * armemu.h (NEGBRANCH): Do not overwrite the two most significant
bits of the offset.
2000-06-20 09:36:12 +00:00
Nick Clifton 6d358e869b Fix compile time warning messages. 2000-02-08 20:54:27 +00:00
Jason Molenda dfcd3bfb6f import gdb-2000-02-04 snapshot 2000-02-05 07:30:26 +00:00
Jason Molenda f743149ecb import gdb-2000-01-26 snapshot 2000-01-26 21:49:14 +00:00
Stan Shebs c906108c21 Initial creation of sourceware repository 1999-04-16 01:35:26 +00:00