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tcg plugins: expose an API version concept

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This is a very simple versioning API which allows the plugin
infrastructure to check the API a plugin was built against. We also
expose a min/cur API version to the plugin via the info block in case
it wants to avoid using old deprecated APIs in the future.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Robert Foley <robert.foley@linaro.org>
This commit is contained in:
Alex Bennée 2019-11-04 13:18:36 +00:00
parent 05273a43af
commit 3fb356cc86
10 changed files with 56 additions and 0 deletions
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2
tests/plugin/bb.c
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@ -14,6 +14,8 @@
#include <qemu-plugin.h>
QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
static uint64_t bb_count;
static uint64_t insn_count;
static bool do_inline;

2
tests/plugin/empty.c
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@ -13,6 +13,8 @@
#include <qemu-plugin.h>
QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
/*
* Empty TB translation callback.
* This allows us to measure the overhead of injecting and then

2
tests/plugin/hotblocks.c
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@ -15,6 +15,8 @@
#include <qemu-plugin.h>
QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
static bool do_inline;
/* Plugins need to take care of their own locking */

2
tests/plugin/hotpages.c
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@ -18,6 +18,8 @@
#include <qemu-plugin.h>
QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
static uint64_t page_size = 4096;

2
tests/plugin/howvec.c
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@ -20,6 +20,8 @@
#include <qemu-plugin.h>
QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
typedef enum {

2
tests/plugin/insn.c
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@ -14,6 +14,8 @@
#include <qemu-plugin.h>
QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
static uint64_t insn_count;
static bool do_inline;

2
tests/plugin/mem.c
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@ -14,6 +14,8 @@
#include <qemu-plugin.h>
QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
static uint64_t mem_count;
static uint64_t io_count;
static bool do_inline;