qemu-e2k/accel
Alex Bennée 453d50ce75 accel/tcg: re-factor plugin_inject_cb so we can assert insn_idx is valid
Coverity doesn't know enough about how we have arranged our plugin TCG
ops to know we will always have incremented insn_idx before injecting
the callback. Let us assert it for the benefit of Coverity and protect
ourselves from accidentally breaking the assumption and triggering
harder to grok errors deeper in the code if we attempt a negative
indexed array lookup.

However to get to this point we re-factor the code and remove the
second hand instruction boundary detection in favour of scanning the
full set of ops and using the existing INDEX_op_insn_start to cleanly
detect when the instruction has started. As we no longer need the
plugin specific list of ops we delete that.

My initial benchmarks shows no discernible impact of dropping the
plugin specific ops list.

Fixes: Coverity 1459509
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210917162332.3511179-12-alex.bennee@linaro.org>
2021-10-12 08:38:10 +01:00
..
hvf memory: Name all the memory listeners 2021-09-30 15:30:24 +02:00
kvm memory: Name all the memory listeners 2021-09-30 15:30:24 +02:00
qtest accel: build qtest modular 2021-07-09 18:21:33 +02:00
stubs Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
tcg accel/tcg: re-factor plugin_inject_cb so we can assert insn_idx is valid 2021-10-12 08:38:10 +01:00
xen sysemu: Let VMChangeStateHandler take boolean 'running' argument 2021-03-09 23:13:57 +01:00
Kconfig Add NVMM accelerator: configure and build logic 2021-05-04 14:15:34 +02:00
accel-common.c accel: autoload modules 2021-07-09 18:21:33 +02:00
accel-softmmu.c accel: autoload modules 2021-07-09 18:21:33 +02:00
accel-softmmu.h accel: replace struct CpusAccel with AccelOpsClass 2021-02-05 10:24:15 -10:00
accel-user.c accel: extend AccelState and AccelClass to user-mode 2021-02-05 10:24:15 -10:00
dummy-cpus.c accel: move qtest CpusAccel functions to a common location 2020-10-24 07:23:19 +02:00
meson.build hvf: Move assert_hvf_ok() into common directory 2021-06-03 16:43:26 +01:00