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[0/7] plugins: Use unwind info for special gdb registers

Message ID 20240416040539.1313535-1-richard.henderson@linaro.org
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Series plugins: Use unwind info for special gdb registers | expand

Message

Richard Henderson April 16, 2024, 4:05 a.m. UTC 
Based-on: 20240404230611.21231-1-richard.henderson@linaro.org
("[PATCH v2 00/21] Rewrite plugin code generation")

This is an attempt to fix
https://gitlab.com/qemu-project/qemu/-/issues/2208
("PC is not updated for each instruction in TCG plugins")

I have only updated target/i386 so far, but basically all targets
need updating for the new callbacks.  Extra points to anyone who
sees how to avoid the extra code duplication.  :-)


r~


Richard Henderson (7):
  tcg: Introduce INDEX_op_plugin_pc
  accel/tcg: Set CPUState.plugin_ra before all plugin callbacks
  accel/tcg: Return the TranslationBlock from cpu_unwind_state_data
  plugins: Introduce TCGCPUOps callbacks for mid-tb register reads
  target/i386: Split out gdb-internal.h
  target/i386: Introduce cpu_compute_eflags_ccop
  target/i386: Implement TCGCPUOps for plugin register reads

 include/exec/cpu-common.h     |  9 +++--
 include/hw/core/cpu.h         |  1 +
 include/hw/core/tcg-cpu-ops.h | 13 +++++++
 include/tcg/tcg-op-common.h   |  1 +
 include/tcg/tcg-opc.h         |  1 +
 target/i386/cpu.h             |  2 +
 target/i386/gdb-internal.h    | 65 +++++++++++++++++++++++++++++++
 accel/tcg/plugin-gen.c        | 50 +++++++++++++++++++++---
 accel/tcg/translate-all.c     |  9 +++--
 plugins/api.c                 | 36 +++++++++++++++++-
 target/i386/gdbstub.c         |  1 +
 target/i386/helper.c          |  6 ++-
 target/i386/tcg/cc_helper.c   | 10 +++++
 target/i386/tcg/tcg-cpu.c     | 72 +++++++++++++++++++++++++++--------
 tcg/tcg-op.c                  |  5 +++
 tcg/tcg.c                     | 10 +++++
 16 files changed, 258 insertions(+), 33 deletions(-)
 create mode 100644 target/i386/gdb-internal.h