[PATCH v2 00/27] target/s390x: pc-relative translation blocks

[Richard Henderson]

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.

Changes for v2:
  * Incorporate feedback, including test cases.


r~


Ilya Leoshkevich (4):
  tests/tcg/s390x: Add bal.S
  tests/tcg/s390x: Add sam.S
  target/s390x: Fix successful-branch PER events
  tests/tcg/s390x: Add per.S

Richard Henderson (23):
  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: Assert masking of psw.addr in 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
  target/s390x: Enable TARGET_TB_PCREL

 target/s390x/cpu-param.h                |   1 +
 target/s390x/cpu.h                      |  20 +-
 target/s390x/tcg/insn-data.h.inc        |   2 +-
 target/s390x/cpu.c                      |  12 +
 target/s390x/tcg/misc_helper.c          |   1 +
 target/s390x/tcg/translate.c            | 870 ++++++++++--------------
 target/s390x/tcg/translate_vx.c.inc     |  45 +-
 tests/tcg/s390x/Makefile.softmmu-target |   3 +
 tests/tcg/s390x/bal.S                   |  24 +
 tests/tcg/s390x/per.S                   |  55 ++
 tests/tcg/s390x/sam.S                   |  67 ++
 11 files changed, 572 insertions(+), 528 deletions(-)
 create mode 100644 tests/tcg/s390x/bal.S
 create mode 100644 tests/tcg/s390x/per.S
 create mode 100644 tests/tcg/s390x/sam.S

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2.34.1