This unifies the implementation of the actual instructions for a32, t32, and t16. In order to make this happen, we need several preliminary cleanups. Most importantly to how we handle the architectural representation of PC.
I attempt to convert single groups of instructions at once, as they are grouped in the sections of the encoding sections of the manual. This has been tested by running the debian 9 armhf installer, which does a far amount of switching between arm and thumb modes. I've also run Peter's ARM TFM image, and all of the existing RISU tests that we have. (Our RISU test cases are nowhere near complete for 32-bit mode, but it did find 3 bugs, so not useless.) What's left is converting NEON and iwmmxt, then we could start merging some of the decoders and tidying the top-level interface further. We will need to convert NEON in order to have a good chance at finishing the ARMv8.2-FHP extension. r~ Richard Henderson (67): decodetree: Allow !function with no input bits target/arm: Remove offset argument to gen_exception_insn target/arm: Remove offset argument to gen_exception_bkpt_insn target/arm: Remove offset argument to gen_exception_internal_insn target/arm: Use the saved value of the insn address target/arm: Introduce pc_read target/arm: Introduce add_reg_for_lit target/arm: Use store_reg_from_load in thumb2 code target/arm: Fold a pc load into load_reg target/arm: Move test for AL into arm_skip_unless target/arm: Add stubs for aa32 decodetree target/arm: Introduce gen_illegal_op target/arm: Convert Data Processing (reg, reg-shifted-reg, imm) target/arm: Convert multiply and multiply accumulate target/arm: Convert Saturating addition and subtraction target/arm: Convert Halfword multiply and multiply accumulate target/arm: Convert MSR (immediate) and hints target/arm: Convert MRS/MSR (banked, register) target/arm: Convert Cyclic Redundancy Check target/arm: Convert the rest of A32 Miscelaneous instructions target/arm: Convert T32 ADDW/SUBW target/arm: Convert load/store (register, immediate, literal) target/arm: Convert Synchronization primitives target/arm: Convert USAD8, USADA8, SBFX, UBFX, BFC, BFI, UDF target/arm: Convert Parallel addition and subtraction target/arm: Convert Packing, unpacking, saturation, and reversal target/arm: Convert Signed multiply, signed and unsigned divide target/arm: Convert MOVW, MOVT target/arm: Convert LDM, STM target/arm: Convert B, BL, BLX (immediate) target/arm: Convert SVC target/arm: Convert RFE and SRS target/arm: Convert Clear-Exclusive, Barriers target/arm: Convert CPS (privileged) target/arm: Convert SETEND target/arm: Convert PLI, PLD, PLDW target/arm: Convert Unallocated memory hint target/arm: Convert Table Branch target/arm: Convert SG target/arm: Convert TT target/arm: Simplify disas_thumb2_insn target/arm: Simplify disas_arm_insn target/arm: Add skeleton for T16 decodetree target/arm: Convert T16 data-processing (two low regs) target/arm: Convert T16 load/store (register offset) target/arm: Convert T16 load/store (immediate offset) target/arm: Convert T16 add pc/sp (immediate) target/arm: Convert T16 load/store multiple target/arm: Convert T16 add/sub (3 low, 2 low and imm) target/arm: Convert T16 one low register and immediate target/arm: Convert T16 branch and exchange target/arm: Convert T16 add, compare, move (two high registers) target/arm: Convert T16 adjust sp (immediate) target/arm: Convert T16, extract target/arm: Convert T16, Change processor state target/arm: Convert T16, Reverse bytes target/arm: Convert T16, nop hints target/arm: Convert T16, push and pop target/arm: Convert T16, Conditional branches, Supervisor call target/arm: Convert T16, Miscellaneous 16-bit instructions target/arm: Convert T16, shift immediate target/arm: Convert T16, load (literal) target/arm: Convert T16, Unconditional branch target/arm: Convert T16, long branches target/arm: Clean up disas_thumb_insn target/arm: Move singlestep check from gen_jmp to gen_goto_tb target/arm: Merge gen_bx_im into trans_BLX_i target/arm/helper.h | 1 - target/arm/translate.h | 10 + target/arm/op_helper.c | 15 - target/arm/translate-vfp.inc.c | 41 +- target/arm/translate.c | 7142 ++++++++++++----------------- scripts/decodetree.py | 5 +- target/arm/Makefile.objs | 24 + target/arm/a32-uncond.decode | 74 + target/arm/a32.decode | 534 +++ target/arm/t16.decode | 279 ++ target/arm/t32.decode | 629 +++ tests/decode/succ_function.decode | 2 + 12 files changed, 4559 insertions(+), 4197 deletions(-) create mode 100644 target/arm/a32-uncond.decode create mode 100644 target/arm/a32.decode create mode 100644 target/arm/t16.decode create mode 100644 target/arm/t32.decode create mode 100644 tests/decode/succ_function.decode -- 2.17.1