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Re: [PATCH 00/26] target/s390x: pc-relative translation blocks


From: Richard Henderson
Subject: Re: [PATCH 00/26] target/s390x: pc-relative translation blocks
Date: Tue, 25 Oct 2022 09:04:42 +1000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.2.2

Ping.

On 10/6/22 13:43, Richard Henderson wrote:
This is the S390 specific changes required to reduce the
amount of translation for address space randomization.

Begin with some generic cleanups, then prepare by using
displacements instead of addresses when possible, then
add some tcg infrastructure to avoid a code gen ugly,
then finalize the conversion.


r~


Richard Henderson (26):
   target/s390x: Use tcg_constant_* in local contexts
   target/s390x: Use tcg_constant_* for DisasCompare
   target/s390x: Use tcg_constant_i32 for fpinst_extract_m34
   target/s390x: Use tcg_constant_* in translate_vx.c.inc
   target/s390x: Change help_goto_direct to work on displacements
   target/s390x: Introduce gen_psw_addr_disp
   target/s390x: Remove pc argument to pc_to_link_into
   target/s390x: Use gen_psw_addr_disp in pc_to_link_info
   target/s390x: Use gen_psw_addr_disp in save_link_info
   target/s390x: Use gen_psw_addr_disp in op_sam
   target/s390x: Use ilen instead in branches
   target/s390x: Move masking of psw.addr to cpu_get_tb_cpu_state
   target/s390x: Add disp argument to update_psw_addr
   target/s390x: Don't set gbea for user-only
   target/s390x: Introduce per_enabled
   target/s390x: Disable conditional branch-to-next for PER
   target/s390x: Introduce help_goto_indirect
   target/s390x: Split per_branch
   target/s390x: Simplify help_branch
   target/s390x: Split per_breaking_event from per_branch_*
   target/s390x: Remove PER check from use_goto_tb
   target/s390x: Pass original r2 register to BCR
   tcg: Pass TCGTempKind to tcg_temp_new_internal
   tcg: Introduce tcg_temp_ebb_new_*
   tcg: Introduce tcg_temp_is_normal_*
   target/s390x: Enable TARGET_TB_PCREL

  include/tcg/tcg-op.h                |   4 +
  include/tcg/tcg.h                   |  49 +-
  target/s390x/cpu-param.h            |   1 +
  target/s390x/cpu.h                  |  13 +-
  target/s390x/cpu.c                  |  12 +
  target/s390x/tcg/translate.c        | 858 ++++++++++++----------------
  tcg/tcg.c                           |  14 +-
  target/s390x/tcg/translate_vx.c.inc |  45 +-
  target/s390x/tcg/insn-data.def      |   2 +-
  9 files changed, 461 insertions(+), 537 deletions(-)





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