Add support for ARM v6 instructions.
authorNick Clifton <nickc@redhat.com>
Sun, 28 Jun 2015 18:14:36 +0000 (19:14 +0100)
committerNick Clifton <nickc@redhat.com>
Sun, 28 Jun 2015 18:14:36 +0000 (19:14 +0100)
commit73cb0348b296656e971c4d428aa63781e656a1c4
treeddb71aae6c4ea1858ed6307f71451a72ff1c6919
parentee0c0c503deffb7baf900ac8e092b18bf8c1528a
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.
sim/arm/ChangeLog
sim/arm/Makefile.in
sim/arm/armdefs.h
sim/arm/armemu.c
sim/arm/armemu.h
sim/arm/armos.c
sim/arm/armsupp.c
sim/arm/thumbemu.c
sim/arm/wrapper.c