[Qemu-devel] [PATCH v4 00/24] target-sparc improvements

[Richard Henderson <rth@twiddle.net>]

The primary focus of this patch set is to reduce the number of
helpers that modify TCG globals, and thus increase the lifetime
of those globals within each TB, and thus decrease the number
of times that tcg must spill and fill them from backing store.

As a byproduct, I also implement the bulk of the interesting v9 ASIs
inline, thus exposing e.g. the little-endian loads and stores as
simple tcg operations.

The patch set is relative to my outstanding tcg pull request.
For reference, the complete tree can be found at

  git://github.com/rth7680/qemu.git tgt-sparc-2

Changes from v3 to v4:
  * Re-do the UA2005 commit change, which apparently got lost in v3.
  * Rebased on aa8151b7df, which contains fix for the ldstub issue.

Changes from v2 to v3:
  * Add ASI_BLK_COMMIT_[PS] to patch 19.
    This fixes the illegal instruction that Artyom reported.
  * Add gen_address_mask calls to all direct accesses.
    This fixes a follow-on segv that affected the debian install.

Changes from v1 to v2:
  * Commit message refers to UA2005 instead of UA2011 when
    introducing new asi.h defines. (Artyom)
  * Drop MMU_REAL_IDX, and inline handling of ASI_REAL_*.
    This appears to be the source of the regression that Artyom
    identified wrt ss5 emulation.


r~


Richard Henderson (24):
  target-sparc: Mark more flags for helpers
  target-sparc: Remove softint as a TCG global
  target-sparc: Store mmu index in TB flags
  target-sparc: Create gen_exception
  target-sparc: Unify asi handling between 32 and 64-bit
  target-sparc: Store %asi in TB flags
  target-sparc: Introduce get_asi
  target-sparc: Pass TCGMemOp to gen_ld/st_asi
  target-sparc: Import linux/arch/sparc/include/uapi/asm/asi.h
  target-sparc: Add UA2005 defines to asi.h
  target-sparc: Use defines from asi.h
  target-sparc: Directly implement easy ld/st asis
  target-sparc: Use QT0 to return results from ldda
  target-sparc: Introduce gen_check_align
  target-sparc: Directly implement easy ldd/std asis
  target-sparc: Fix obvious error in ASI_M_BFILL
  target-sparc: Pass TCGMemOp constants to helper_ld/st_asi
  target-sparc: Directly implement easy ldf/stf asis
  target-sparc: Directly implement block and short ldf/stf asis
  target-sparc: Remove helper_ldf_asi, helper_stf_asi
  target-sparc: Use explicit writes to cpu_fsr
  target-sparc: Use cpu_fsr in stfsr
  target-sparc: Use cpu_loop_exit_restore from
    helper_check_ieee_exceptions
  target-sparc: Elide duplicate updates to fprs

 target-sparc/asi.h         |  311 +++++++++++
 target-sparc/cpu.h         |   28 +-
 target-sparc/fop_helper.c  |  230 +++-----
 target-sparc/helper.h      |  168 +++---
 target-sparc/ldst_helper.c |  696 +++++++++++-------------
 target-sparc/translate.c   | 1273 ++++++++++++++++++++++++++++----------------
 6 files changed, 1607 insertions(+), 1099 deletions(-)
 create mode 100644 target-sparc/asi.h

-- 
2.5.5