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* [Qemu-devel] [PATCH v8 00/34] target/riscv: Convert to decodetree
@ 2019-02-22 14:09 Bastian Koppelmann
  2019-02-22 14:09 ` [Qemu-devel] [PATCH v8 01/34] target/riscv: Activate decodetree and implemnt LUI & AUIPC Bastian Koppelmann
                   ` (66 more replies)
  0 siblings, 67 replies; 70+ messages in thread
From: Bastian Koppelmann @ 2019-02-22 14:09 UTC (permalink / raw)
  To: sagark, palmer, kbastian
  Cc: richard.henderson, peer.adelt, qemu-riscv, qemu-devel

Hi,

this patchset converts the RISC-V decoder to decodetree in four major steps:

1) Convert 32-bit instructions to decodetree [Patch 1-15]:
    Many of the gen_* functions are called by the decode functions for 16-bit
    and 32-bit functions. If we move translation code from the gen_*
    functions to the generated trans_* functions of decode-tree, we get a lot of
    duplication. Therefore, we mostly generate calls to the old gen_* function
    which are properly replaced after step 2).

    Each of the trans_ functions are grouped into files corresponding to their
    ISA extension, e.g. addi which is in RV32I is translated in the file
    'trans_rvi.inc.c'.

2) Convert 16-bit instructions to decodetree [Patch 16-18]:
    All 16 bit instructions have a direct mapping to a 32 bit instruction. Thus,
    we convert the arguments in the 16 bit trans_ function to the arguments of
    the corresponding 32 bit instruction and call the 32 bit trans_ function.

3) Remove old manual decoding in gen_* function [Patch 19-29]:
    this move all manual translation code into the trans_* instructions of
    decode tree, such that we can remove the old decode_* functions.

4) Simplify RVC by reusing as much as possible from the RVG decoder as suggested
   by Richard. [Patch 30-34]

full tree available at
https://github.com/bkoppelmann/qemu/tree/riscv-dt-v8

Cheers,
Bastian

v7 -> v8:
    - add REQUIRE_EXT macro
    - add missing RVM checks
    - add missing RVA checks
    - add missing RVF checks
    - add missing RVF checks
    - add missing RVD checks
    - add missing RVD checks
    - riscv_has_ext -> has_ext
    - env->ctx->priv_version -> ctx->priv_version
    - fixed wrongly inserted #ifdef TARGET_RISCV64 that lead to a compile error


Bastian Koppelmann (34):
  target/riscv: Activate decodetree and implemnt LUI & AUIPC
  target/riscv: Convert RVXI branch insns to decodetree
  target/riscv: Convert RV32I load/store insns to decodetree
  target/riscv: Convert RV64I load/store insns to decodetree
  target/riscv: Convert RVXI arithmetic insns to decodetree
  target/riscv: Convert RVXI fence insns to decodetree
  target/riscv: Convert RVXI csr insns to decodetree
  target/riscv: Convert RVXM insns to decodetree
  target/riscv: Convert RV32A insns to decodetree
  target/riscv: Convert RV64A insns to decodetree
  target/riscv: Convert RV32F insns to decodetree
  target/riscv: Convert RV64F insns to decodetree
  target/riscv: Convert RV32D insns to decodetree
  target/riscv: Convert RV64D insns to decodetree
  target/riscv: Convert RV priv insns to decodetree
  target/riscv: Convert quadrant 0 of RVXC insns to decodetree
  target/riscv: Convert quadrant 1 of RVXC insns to decodetree
  target/riscv: Convert quadrant 2 of RVXC insns to decodetree
  target/riscv: Remove gen_jalr()
  target/riscv: Remove manual decoding from gen_branch()
  target/riscv: Remove manual decoding from gen_load()
  target/riscv: Remove manual decoding from gen_store()
  target/riscv: Move gen_arith_imm() decoding into trans_* functions
  target/riscv: make ADD/SUB/OR/XOR/AND insn use arg lists
  target/riscv: Remove shift and slt insn manual decoding
  target/riscv: Remove manual decoding of RV32/64M insn
  target/riscv: Rename trans_arith to gen_arith
  target/riscv: Remove gen_system()
  target/riscv: Remove decode_RV32_64G()
  target/riscv: Convert @cs_2 insns to share translation functions
  target/riscv: Convert @cl_d, @cl_w, @cs_d, @cs_w insns
  target/riscv: Splice fsw_sd and flw_ld for riscv32 vs riscv64
  target/riscv: Splice remaining compressed insn pairs for riscv32 vs
    riscv64
  target/riscv: Remaining rvc insn reuse 32 bit translators

 target/riscv/Makefile.objs                    |   22 +
 target/riscv/insn16-32.decode                 |   31 +
 target/riscv/insn16-64.decode                 |   33 +
 target/riscv/insn16.decode                    |  114 +
 target/riscv/insn32-64.decode                 |   72 +
 target/riscv/insn32.decode                    |  203 ++
 .../riscv/insn_trans/trans_privileged.inc.c   |  110 +
 target/riscv/insn_trans/trans_rva.inc.c       |  218 ++
 target/riscv/insn_trans/trans_rvc.inc.c       |  149 ++
 target/riscv/insn_trans/trans_rvd.inc.c       |  442 ++++
 target/riscv/insn_trans/trans_rvf.inc.c       |  439 ++++
 target/riscv/insn_trans/trans_rvi.inc.c       |  568 +++++
 target/riscv/insn_trans/trans_rvm.inc.c       |  120 +
 target/riscv/translate.c                      | 1948 ++---------------
 14 files changed, 2740 insertions(+), 1729 deletions(-)
 create mode 100644 target/riscv/insn16-32.decode
 create mode 100644 target/riscv/insn16-64.decode
 create mode 100644 target/riscv/insn16.decode
 create mode 100644 target/riscv/insn32-64.decode
 create mode 100644 target/riscv/insn32.decode
 create mode 100644 target/riscv/insn_trans/trans_privileged.inc.c
 create mode 100644 target/riscv/insn_trans/trans_rva.inc.c
 create mode 100644 target/riscv/insn_trans/trans_rvc.inc.c
 create mode 100644 target/riscv/insn_trans/trans_rvd.inc.c
 create mode 100644 target/riscv/insn_trans/trans_rvf.inc.c
 create mode 100644 target/riscv/insn_trans/trans_rvi.inc.c
 create mode 100644 target/riscv/insn_trans/trans_rvm.inc.c

-- 
2.20.1

^ permalink raw reply	[flat|nested] 70+ messages in thread

end of thread, other threads:[~2019-02-28  9:06 UTC | newest]

Thread overview: 70+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2019-02-22 14:09 [Qemu-devel] [PATCH v8 00/34] target/riscv: Convert to decodetree Bastian Koppelmann
2019-02-22 14:09 ` [Qemu-devel] [PATCH v8 01/34] target/riscv: Activate decodetree and implemnt LUI & AUIPC Bastian Koppelmann
2019-02-22 14:09 ` [Qemu-devel] [PATCH v8 02/34] target/riscv: Convert RVXI branch insns to decodetree Bastian Koppelmann
2019-02-22 14:09 ` [Qemu-devel] [PATCH v8 03/34] target/riscv: Convert RV32I load/store " Bastian Koppelmann
2019-02-22 14:09 ` [Qemu-devel] [PATCH v8 04/34] target/riscv: Convert RV64I " Bastian Koppelmann
2019-02-22 14:09 ` [Qemu-devel] [PATCH v8 05/34] target/riscv: Convert RVXI arithmetic " Bastian Koppelmann
2019-02-22 14:09 ` [Qemu-devel] [PATCH v8 06/34] target/riscv: Convert RVXI fence " Bastian Koppelmann
2019-02-22 14:09 ` [Qemu-devel] [PATCH v8 07/34] target/riscv: Convert RVXI csr " Bastian Koppelmann
2019-02-22 14:09 ` [Qemu-devel] [PATCH v8 08/34] target/riscv: Convert RVXM " Bastian Koppelmann
2019-02-22 14:09 ` [Qemu-devel] [PATCH v8 09/34] target/riscv: Convert RV32A " Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 10/34] target/riscv: Convert RV64A " Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 11/34] target/riscv: Convert RV32F " Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 12/34] target/riscv: Convert RV64F " Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 13/34] target/riscv: Convert RV32D " Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 14/34] target/riscv: Convert RV64D " Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 15/34] target/riscv: Convert RV priv " Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 16/34] target/riscv: Convert quadrant 0 of RVXC " Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 17/34] target/riscv: Convert quadrant 1 " Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 18/34] target/riscv: Convert quadrant 2 " Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 19/34] target/riscv: Remove gen_jalr() Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 20/34] target/riscv: Remove manual decoding from gen_branch() Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 21/34] target/riscv: Remove manual decoding from gen_load() Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 22/34] target/riscv: Remove manual decoding from gen_store() Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 23/34] target/riscv: Move gen_arith_imm() decoding into trans_* functions Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 24/34] target/riscv: make ADD/SUB/OR/XOR/AND insn use arg lists Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 25/34] target/riscv: Remove shift and slt insn manual decoding Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 26/34] target/riscv: Remove manual decoding of RV32/64M insn Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 27/34] target/riscv: Rename trans_arith to gen_arith Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 28/34] target/riscv: Remove gen_system() Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 29/34] target/riscv: Remove decode_RV32_64G() Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 30/34] target/riscv: Convert @cs_2 insns to share translation functions Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 31/34] target/riscv: Convert @cl_d, @cl_w, @cs_d, @cs_w insns Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 32/34] target/riscv: Splice fsw_sd and flw_ld for riscv32 vs riscv64 Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 33/34] target/riscv: Splice remaining compressed insn pairs " Bastian Koppelmann
2019-02-22 14:10 ` [Qemu-devel] [PATCH v8 34/34] target/riscv: Remaining rvc insn reuse 32 bit translators Bastian Koppelmann
2019-02-22 23:16 ` [Qemu-devel] [PATCH v8 00/34] target/riscv: Convert to decodetree Alistair Francis
2019-02-27 17:55 ` no-reply
2019-02-28  8:37   ` Thomas Huth
2019-02-28  9:06     ` Paolo Bonzini
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