plugins: add inline operation per vcpu

Extends API with three new functions:
qemu_plugin_register_vcpu_{tb, insn, mem}_exec_inline_per_vcpu().

Those functions takes a qemu_plugin_u64 as input.

This allows to have a thread-safe and type-safe version of inline
operations.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20240304130036.124418-5-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-18-alex.bennee@linaro.org>

2 files changed, 51 insertions, 1 deletions

diff --git a/include/qemu/plugin.h b/include/qemu/plugin.h
index bf96d2c..12a96ce 100644
--- a/include/qemu/plugin.h
+++ b/include/qemu/plugin.h
@@ -92,6 +92,7 @@ struct qemu_plugin_dyn_cb {
     /* fields specific to each dyn_cb type go here */
     union {
         struct {
+            qemu_plugin_u64 entry;
             enum qemu_plugin_op op;
             uint64_t imm;
         } inline_insn;
diff --git a/include/qemu/qemu-plugin.h b/include/qemu/qemu-plugin.h
index ebf9a64..6bbad06 100644
--- a/include/qemu/qemu-plugin.h
+++ b/include/qemu/qemu-plugin.h
@@ -329,6 +329,22 @@ void qemu_plugin_register_vcpu_tb_exec_inline(struct qemu_plugin_tb *tb,
                                               void *ptr, uint64_t imm);
 
 /**
+ * qemu_plugin_register_vcpu_tb_exec_inline_per_vcpu() - execution inline op
+ * @tb: the opaque qemu_plugin_tb handle for the translation
+ * @op: the type of qemu_plugin_op (e.g. ADD_U64)
+ * @entry: entry to run op
+ * @imm: the op data (e.g. 1)
+ *
+ * Insert an inline op on a given scoreboard entry.
+ */
+QEMU_PLUGIN_API
+void qemu_plugin_register_vcpu_tb_exec_inline_per_vcpu(
+    struct qemu_plugin_tb *tb,
+    enum qemu_plugin_op op,
+    qemu_plugin_u64 entry,
+    uint64_t imm);
+
+/**
  * qemu_plugin_register_vcpu_insn_exec_cb() - register insn execution cb
  * @insn: the opaque qemu_plugin_insn handle for an instruction
  * @cb: callback function
@@ -359,6 +375,22 @@ void qemu_plugin_register_vcpu_insn_exec_inline(struct qemu_plugin_insn *insn,
                                                 void *ptr, uint64_t imm);
 
 /**
+ * qemu_plugin_register_vcpu_insn_exec_inline_per_vcpu() - insn exec inline op
+ * @insn: the opaque qemu_plugin_insn handle for an instruction
+ * @op: the type of qemu_plugin_op (e.g. ADD_U64)
+ * @entry: entry to run op
+ * @imm: the op data (e.g. 1)
+ *
+ * Insert an inline op to every time an instruction executes.
+ */
+QEMU_PLUGIN_API
+void qemu_plugin_register_vcpu_insn_exec_inline_per_vcpu(
+    struct qemu_plugin_insn *insn,
+    enum qemu_plugin_op op,
+    qemu_plugin_u64 entry,
+    uint64_t imm);
+
+/**
  * qemu_plugin_tb_n_insns() - query helper for number of insns in TB
  * @tb: opaque handle to TB passed to callback
  *
@@ -583,7 +615,24 @@ void qemu_plugin_register_vcpu_mem_inline(struct qemu_plugin_insn *insn,
                                           enum qemu_plugin_op op, void *ptr,
                                           uint64_t imm);
 
-
+/**
+ * qemu_plugin_register_vcpu_mem_inline_per_vcpu() - inline op for mem access
+ * @insn: handle for instruction to instrument
+ * @rw: apply to reads, writes or both
+ * @op: the op, of type qemu_plugin_op
+ * @entry: entry to run op
+ * @imm: immediate data for @op
+ *
+ * This registers a inline op every memory access generated by the
+ * instruction.
+ */
+QEMU_PLUGIN_API
+void qemu_plugin_register_vcpu_mem_inline_per_vcpu(
+    struct qemu_plugin_insn *insn,
+    enum qemu_plugin_mem_rw rw,
+    enum qemu_plugin_op op,
+    qemu_plugin_u64 entry,
+    uint64_t imm);
 
 typedef void
 (*qemu_plugin_vcpu_syscall_cb_t)(qemu_plugin_id_t id, unsigned int vcpu_index,