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author | Peter Maydell | 2019-10-30 15:10:32 +0100 |
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committer | Peter Maydell | 2019-10-30 15:10:32 +0100 |
commit | 68d8ef4ec540682c3538d4963e836e43a211dd17 (patch) | |
tree | adb6ef5cec791cdc355280c1564e33d227472567 /tcg/tcg.h | |
parent | Merge remote-tracking branch 'remotes/cleber/tags/python-next-pull-request' i... (diff) | |
parent | travis.yml: enable linux-gcc-debug-tcg cache (diff) | |
download | qemu-68d8ef4ec540682c3538d4963e836e43a211dd17.tar.gz qemu-68d8ef4ec540682c3538d4963e836e43a211dd17.tar.xz qemu-68d8ef4ec540682c3538d4963e836e43a211dd17.zip |
Merge remote-tracking branch 'remotes/stsquad/tags/pull-tcg-plugins-281019-4' into staging
TCG Plugins initial implementation
- use --enable-plugins @ configure
- low impact introspection (-plugin empty.so to measure overhead)
- plugins cannot alter guest state
- example plugins included in source tree (tests/plugins)
- -d plugin to enable plugin output in logs
- check-tcg runs extra tests when plugins enabled
- documentation in docs/devel/plugins.rst
# gpg: Signature made Mon 28 Oct 2019 15:13:23 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44
* remotes/stsquad/tags/pull-tcg-plugins-281019-4: (57 commits)
travis.yml: enable linux-gcc-debug-tcg cache
MAINTAINERS: add me for the TCG plugins code
scripts/checkpatch.pl: don't complain about (foo, /* empty */)
.travis.yml: add --enable-plugins tests
include/exec: wrap cpu_ldst.h in CONFIG_TCG
accel/stubs: reduce headers from tcg-stub
tests/plugin: add hotpages to analyse memory access patterns
tests/plugin: add instruction execution breakdown
tests/plugin: add a hotblocks plugin
tests/tcg: enable plugin testing
tests/tcg: drop test-i386-fprem from TESTS when not SLOW
tests/tcg: move "virtual" tests to EXTRA_TESTS
tests/tcg: set QEMU_OPTS for all cris runs
tests/tcg/Makefile.target: fix path to config-host.mak
tests/plugin: add sample plugins
linux-user: support -plugin option
vl: support -plugin option
plugin: add qemu_plugin_outs helper
plugin: add qemu_plugin_insn_disas helper
plugin: expand the plugin_init function to include an info block
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'tcg/tcg.h')
-rw-r--r-- | tcg/tcg.h | 21 |
1 files changed, 21 insertions, 0 deletions
@@ -29,6 +29,7 @@ #include "exec/memop.h" #include "exec/tb-context.h" #include "qemu/bitops.h" +#include "qemu/plugin.h" #include "qemu/queue.h" #include "tcg-mo.h" #include "tcg-target.h" @@ -538,6 +539,9 @@ typedef struct TCGOp { /* Next and previous opcodes. */ QTAILQ_ENTRY(TCGOp) link; +#ifdef CONFIG_PLUGIN + QSIMPLEQ_ENTRY(TCGOp) plugin_link; +#endif /* Arguments for the opcode. */ TCGArg args[MAX_OPC_PARAM]; @@ -639,6 +643,23 @@ struct TCGContext { TCGLabel *exitreq_label; +#ifdef CONFIG_PLUGIN + /* + * We keep one plugin_tb struct per TCGContext. Note that on every TB + * translation we clear but do not free its contents; this way we + * avoid a lot of malloc/free churn, since after a few TB's it's + * unlikely that we'll need to allocate either more instructions or more + * space for instructions (for variable-instruction-length ISAs). + */ + struct qemu_plugin_tb *plugin_tb; + + /* descriptor of the instruction being translated */ + struct qemu_plugin_insn *plugin_insn; + + /* list to quickly access the injected ops */ + QSIMPLEQ_HEAD(, TCGOp) plugin_ops; +#endif + TCGTempSet free_temps[TCG_TYPE_COUNT * 2]; TCGTemp temps[TCG_MAX_TEMPS]; /* globals first, temps after */ |