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[PULL 21/28] plugins: add helper functions for coverage plugins
From: |
Alex Bennée |
Subject: |
[PULL 21/28] plugins: add helper functions for coverage plugins |
Date: |
Wed, 9 Feb 2022 14:15:22 +0000 |
From: Ivanov Arkady <arkadiy.ivanov@ispras.ru>
Which provide information about:
- start_code.
- end_code.
- entry.
- path to the executable binary.
Signed-off-by: Ivanov Arkady <arkadiy.ivanov@ispras.ru>
Message-Id:
<163491883461.304355.8210754161847179432.stgit@pc-System-Product-Name>
[AJB: reword title, better descriptions, defaults, rm export, fix include]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220204204335.1689602-22-alex.bennee@linaro.org>
diff --git a/include/qemu/qemu-plugin.h b/include/qemu/qemu-plugin.h
index 5f1017201f..535ddbf0ae 100644
--- a/include/qemu/qemu-plugin.h
+++ b/include/qemu/qemu-plugin.h
@@ -590,4 +590,38 @@ void qemu_plugin_outs(const char *string);
*/
bool qemu_plugin_bool_parse(const char *name, const char *val, bool *ret);
+/**
+ * qemu_plugin_path_to_binary() - path to binary file being executed
+ *
+ * Return a string representing the path to the binary. For user-mode
+ * this is the main executable. For system emulation we currently
+ * return NULL. The user should g_free() the string once no longer
+ * needed.
+ */
+const char *qemu_plugin_path_to_binary(void);
+
+/**
+ * qemu_plugin_start_code() - returns start of text segment
+ *
+ * Returns the nominal start address of the main text segment in
+ * user-mode. Currently returns 0 for system emulation.
+ */
+uint64_t qemu_plugin_start_code(void);
+
+/**
+ * qemu_plugin_end_code() - returns end of text segment
+ *
+ * Returns the nominal end address of the main text segment in
+ * user-mode. Currently returns 0 for system emulation.
+ */
+uint64_t qemu_plugin_end_code(void);
+
+/**
+ * qemu_plugin_entry_code() - returns start address for module
+ *
+ * Returns the nominal entry address of the main text segment in
+ * user-mode. Currently returns 0 for system emulation.
+ */
+uint64_t qemu_plugin_entry_code(void);
+
#endif /* QEMU_PLUGIN_API_H */
diff --git a/plugins/api.c b/plugins/api.c
index b143b09ce9..91e0c7074c 100644
--- a/plugins/api.c
+++ b/plugins/api.c
@@ -44,6 +44,11 @@
#ifndef CONFIG_USER_ONLY
#include "qemu/plugin-memory.h"
#include "hw/boards.h"
+#else
+#include "qemu.h"
+#ifdef CONFIG_LINUX
+#include "loader.h"
+#endif
#endif
/* Uninstall and Reset handlers */
@@ -391,3 +396,46 @@ bool qemu_plugin_bool_parse(const char *name, const char
*value, bool *ret)
{
return name && value && qapi_bool_parse(name, value, ret, NULL);
}
+
+/*
+ * Binary path, start and end locations
+ */
+const char *qemu_plugin_path_to_binary(void)
+{
+ char *path = NULL;
+#ifdef CONFIG_USER_ONLY
+ TaskState *ts = (TaskState *) current_cpu->opaque;
+ path = g_strdup(ts->bprm->filename);
+#endif
+ return path;
+}
+
+uint64_t qemu_plugin_start_code(void)
+{
+ uint64_t start = 0;
+#ifdef CONFIG_USER_ONLY
+ TaskState *ts = (TaskState *) current_cpu->opaque;
+ start = ts->info->start_code;
+#endif
+ return start;
+}
+
+uint64_t qemu_plugin_end_code(void)
+{
+ uint64_t end = 0;
+#ifdef CONFIG_USER_ONLY
+ TaskState *ts = (TaskState *) current_cpu->opaque;
+ end = ts->info->end_code;
+#endif
+ return end;
+}
+
+uint64_t qemu_plugin_entry_code(void)
+{
+ uint64_t entry = 0;
+#ifdef CONFIG_USER_ONLY
+ TaskState *ts = (TaskState *) current_cpu->opaque;
+ entry = ts->info->entry;
+#endif
+ return entry;
+}
diff --git a/plugins/qemu-plugins.symbols b/plugins/qemu-plugins.symbols
index 4834756ba3..71f6c90549 100644
--- a/plugins/qemu-plugins.symbols
+++ b/plugins/qemu-plugins.symbols
@@ -1,5 +1,7 @@
{
qemu_plugin_bool_parse;
+ qemu_plugin_end_code;
+ qemu_plugin_entry_code;
qemu_plugin_get_hwaddr;
qemu_plugin_hwaddr_device_name;
qemu_plugin_hwaddr_is_io;
@@ -17,6 +19,7 @@
qemu_plugin_n_max_vcpus;
qemu_plugin_n_vcpus;
qemu_plugin_outs;
+ qemu_plugin_path_to_binary;
qemu_plugin_register_atexit_cb;
qemu_plugin_register_flush_cb;
qemu_plugin_register_vcpu_exit_cb;
@@ -33,6 +36,7 @@
qemu_plugin_register_vcpu_tb_exec_inline;
qemu_plugin_register_vcpu_tb_trans_cb;
qemu_plugin_reset;
+ qemu_plugin_start_code;
qemu_plugin_tb_get_insn;
qemu_plugin_tb_n_insns;
qemu_plugin_tb_vaddr;
--
2.30.2
- [PULL 02/28] tests/qtest: enable more vhost-user tests by default, (continued)
- [PULL 02/28] tests/qtest: enable more vhost-user tests by default, Alex Bennée, 2022/02/09
- [PULL 05/28] MAINTAINERS: Cover lcitool submodule with build test / automation, Alex Bennée, 2022/02/09
- [PULL 07/28] tests/lcitool: Include local qemu.yml when refreshing cirrus-ci files, Alex Bennée, 2022/02/09
- [PULL 04/28] .gitignore: add .gcov pattern, Alex Bennée, 2022/02/09
- [PULL 06/28] gitmodules: Correct libvirt-ci submodule URL, Alex Bennée, 2022/02/09
- [PULL 12/28] docs/devel: mention our .editorconfig, Alex Bennée, 2022/02/09
- [PULL 17/28] docs: remove references to TCG tracing, Alex Bennée, 2022/02/09
- [PULL 08/28] drop libxml2 checks since libxml is not actually used (for parallels), Alex Bennée, 2022/02/09
- [PULL 11/28] tests/lcitool: Install libibumad to cover RDMA on Debian based distros, Alex Bennée, 2022/02/09
- [PULL 10/28] tests: Manually remove libxml2 on MSYS2 runners, Alex Bennée, 2022/02/09
- [PULL 21/28] plugins: add helper functions for coverage plugins,
Alex Bennée <=
- [PULL 26/28] plugins: move reset of plugin data to tb_start, Alex Bennée, 2022/02/09
- [PULL 15/28] tests: Update CentOS 8 container to CentOS Stream 8, Alex Bennée, 2022/02/09
- [PULL 19/28] tracing: remove the trace-tcg includes from the build, Alex Bennée, 2022/02/09
- [PULL 28/28] include/exec: fix softmmu version of TARGET_ABI_FMT_lx, Alex Bennée, 2022/02/09
- [PULL 27/28] linux-user: Remove the deprecated ppc64abi32 target, Alex Bennée, 2022/02/09
- [PULL 16/28] tests/tcg/sh4: disable another unreliable test, Alex Bennée, 2022/02/09
- [PULL 20/28] tracing: excise the tcg related from tracetool, Alex Bennée, 2022/02/09
- [PULL 13/28] gitlab: fall back to commit hash in qemu-setup filename, Alex Bennée, 2022/02/09
- [PULL 18/28] tracing: remove TCG memory access tracing, Alex Bennée, 2022/02/09