Merge tag 'pull-maintainer-may24-160524-2' of https://gitlab.com/stsquad/qemu into staging

plugin and testing updates

 - don't duplicate options for microbit test
 - don't spam the linux source tree when importing headers
 - add STORE_U64 inline op to TCG plugins
 - add conditional callback op to TCG plugins

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# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]

* tag 'pull-maintainer-may24-160524-2' of https://gitlab.com/stsquad/qemu:
  plugins: remove op from qemu_plugin_inline_cb
  plugins: extract cpu_index generate
  plugins: distinct types for callbacks
  tests/plugin/inline: add test for conditional callback
  plugins: conditional callbacks
  tests/plugin/inline: add test for STORE_U64 inline op
  plugins: add new inline op STORE_U64
  plugins: extract generate ptr for qemu_plugin_u64
  plugins: prepare introduction of new inline ops
  scripts/update-linux-header.sh: be more src tree friendly
  tests/tcg: don't append QEMU_OPTS for armv6m-undef test

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

2 files changed, 106 insertions, 16 deletions

diff --git a/include/qemu/plugin.h b/include/qemu/plugin.h
index 7fda6ef..bc5aef9 100644
--- a/include/qemu/plugin.h
+++ b/include/qemu/plugin.h
@@ -68,8 +68,32 @@ union qemu_plugin_cb_sig {
 
 enum plugin_dyn_cb_type {
     PLUGIN_CB_REGULAR,
+    PLUGIN_CB_COND,
     PLUGIN_CB_MEM_REGULAR,
-    PLUGIN_CB_INLINE,
+    PLUGIN_CB_INLINE_ADD_U64,
+    PLUGIN_CB_INLINE_STORE_U64,
+};
+
+struct qemu_plugin_regular_cb {
+    union qemu_plugin_cb_sig f;
+    TCGHelperInfo *info;
+    void *userp;
+    enum qemu_plugin_mem_rw rw;
+};
+
+struct qemu_plugin_inline_cb {
+    qemu_plugin_u64 entry;
+    uint64_t imm;
+    enum qemu_plugin_mem_rw rw;
+};
+
+struct qemu_plugin_conditional_cb {
+    union qemu_plugin_cb_sig f;
+    TCGHelperInfo *info;
+    void *userp;
+    qemu_plugin_u64 entry;
+    enum qemu_plugin_cond cond;
+    uint64_t imm;
 };
 
 /*
@@ -78,21 +102,11 @@ enum plugin_dyn_cb_type {
  * instance of a callback to be called upon the execution of a particular TB.
  */
 struct qemu_plugin_dyn_cb {
-    void *userp;
     enum plugin_dyn_cb_type type;
-    /* @rw applies to mem callbacks only (both regular and inline) */
-    enum qemu_plugin_mem_rw rw;
-    /* fields specific to each dyn_cb type go here */
     union {
-        struct {
-            union qemu_plugin_cb_sig f;
-            TCGHelperInfo *info;
-        } regular;
-        struct {
-            qemu_plugin_u64 entry;
-            enum qemu_plugin_op op;
-            uint64_t imm;
-        } inline_insn;
+        struct qemu_plugin_regular_cb regular;
+        struct qemu_plugin_conditional_cb cond;
+        struct qemu_plugin_inline_cb inline_insn;
     };
 };
 
diff --git a/include/qemu/qemu-plugin.h b/include/qemu/qemu-plugin.h
index 5f36c2d..95703d8 100644
--- a/include/qemu/qemu-plugin.h
+++ b/include/qemu/qemu-plugin.h
@@ -263,6 +263,29 @@ enum qemu_plugin_mem_rw {
 };
 
 /**
+ * enum qemu_plugin_cond - condition to enable callback
+ *
+ * @QEMU_PLUGIN_COND_NEVER: false
+ * @QEMU_PLUGIN_COND_ALWAYS: true
+ * @QEMU_PLUGIN_COND_EQ: is equal?
+ * @QEMU_PLUGIN_COND_NE: is not equal?
+ * @QEMU_PLUGIN_COND_LT: is less than?
+ * @QEMU_PLUGIN_COND_LE: is less than or equal?
+ * @QEMU_PLUGIN_COND_GT: is greater than?
+ * @QEMU_PLUGIN_COND_GE: is greater than or equal?
+ */
+enum qemu_plugin_cond {
+    QEMU_PLUGIN_COND_NEVER,
+    QEMU_PLUGIN_COND_ALWAYS,
+    QEMU_PLUGIN_COND_EQ,
+    QEMU_PLUGIN_COND_NE,
+    QEMU_PLUGIN_COND_LT,
+    QEMU_PLUGIN_COND_LE,
+    QEMU_PLUGIN_COND_GT,
+    QEMU_PLUGIN_COND_GE,
+};
+
+/**
  * typedef qemu_plugin_vcpu_tb_trans_cb_t - translation callback
  * @id: unique plugin id
  * @tb: opaque handle used for querying and instrumenting a block.
@@ -302,15 +325,41 @@ void qemu_plugin_register_vcpu_tb_exec_cb(struct qemu_plugin_tb *tb,
                                           void *userdata);
 
 /**
+ * qemu_plugin_register_vcpu_tb_exec_cond_cb() - register conditional callback
+ * @tb: the opaque qemu_plugin_tb handle for the translation
+ * @cb: callback function
+ * @cond: condition to enable callback
+ * @entry: first operand for condition
+ * @imm: second operand for condition
+ * @flags: does the plugin read or write the CPU's registers?
+ * @userdata: any plugin data to pass to the @cb?
+ *
+ * The @cb function is called when a translated unit executes if
+ * entry @cond imm is true.
+ * If condition is QEMU_PLUGIN_COND_ALWAYS, condition is never interpreted and
+ * this function is equivalent to qemu_plugin_register_vcpu_tb_exec_cb.
+ * If condition QEMU_PLUGIN_COND_NEVER, condition is never interpreted and
+ * callback is never installed.
+ */
+QEMU_PLUGIN_API
+void qemu_plugin_register_vcpu_tb_exec_cond_cb(struct qemu_plugin_tb *tb,
+                                               qemu_plugin_vcpu_udata_cb_t cb,
+                                               enum qemu_plugin_cb_flags flags,
+                                               enum qemu_plugin_cond cond,
+                                               qemu_plugin_u64 entry,
+                                               uint64_t imm,
+                                               void *userdata);
+
+/**
  * enum qemu_plugin_op - describes an inline op
  *
  * @QEMU_PLUGIN_INLINE_ADD_U64: add an immediate value uint64_t
- *
- * Note: currently only a single inline op is supported.
+ * @QEMU_PLUGIN_INLINE_STORE_U64: store an immediate value uint64_t
  */
 
 enum qemu_plugin_op {
     QEMU_PLUGIN_INLINE_ADD_U64,
+    QEMU_PLUGIN_INLINE_STORE_U64,
 };
 
 /**
@@ -345,6 +394,33 @@ void qemu_plugin_register_vcpu_insn_exec_cb(struct qemu_plugin_insn *insn,
                                             void *userdata);
 
 /**
+ * qemu_plugin_register_vcpu_insn_exec_cond_cb() - conditional insn execution cb
+ * @insn: the opaque qemu_plugin_insn handle for an instruction
+ * @cb: callback function
+ * @flags: does the plugin read or write the CPU's registers?
+ * @cond: condition to enable callback
+ * @entry: first operand for condition
+ * @imm: second operand for condition
+ * @userdata: any plugin data to pass to the @cb?
+ *
+ * The @cb function is called when an instruction executes if
+ * entry @cond imm is true.
+ * If condition is QEMU_PLUGIN_COND_ALWAYS, condition is never interpreted and
+ * this function is equivalent to qemu_plugin_register_vcpu_insn_exec_cb.
+ * If condition QEMU_PLUGIN_COND_NEVER, condition is never interpreted and
+ * callback is never installed.
+ */
+QEMU_PLUGIN_API
+void qemu_plugin_register_vcpu_insn_exec_cond_cb(
+    struct qemu_plugin_insn *insn,
+    qemu_plugin_vcpu_udata_cb_t cb,
+    enum qemu_plugin_cb_flags flags,
+    enum qemu_plugin_cond cond,
+    qemu_plugin_u64 entry,
+    uint64_t imm,
+    void *userdata);
+
+/**
  * 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)