cputlb: introduce get_page_addr_code_hostp

This will be used by plugins to get the host address
of instructions.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 38 insertions, 0 deletions

diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index e4206cb173..eadcf29d0c 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -22,6 +22,7 @@
 
 #include "cpu.h"
 #include "exec/tb-context.h"
+#include "exec/cpu_ldst.h"
 #include "sysemu/cpus.h"
 
 /* allow to see translation results - the slowdown should be negligible, so we leave it */
@@ -516,6 +517,26 @@ static inline tb_page_addr_t get_page_addr_code(CPUArchState *env,
 {
     return addr;
 }
+
+/**
+ * get_page_addr_code_hostp() - user-mode version
+ * @env: CPUArchState
+ * @addr: guest virtual address of guest code
+ *
+ * Returns @addr.
+ *
+ * If @hostp is non-NULL, sets *@hostp to the host address where @addr's content
+ * is kept.
+ */
+static inline tb_page_addr_t get_page_addr_code_hostp(CPUArchState *env,
+                                                      target_ulong addr,
+                                                      void **hostp)
+{
+    if (hostp) {
+        *hostp = g2h(addr);
+    }
+    return addr;
+}
 #else
 static inline void mmap_lock(void) {}
 static inline void mmap_unlock(void) {}
@@ -533,6 +554,23 @@ static inline void mmap_unlock(void) {}
  */
 tb_page_addr_t get_page_addr_code(CPUArchState *env, target_ulong addr);
 
+/**
+ * get_page_addr_code_hostp() - full-system version
+ * @env: CPUArchState
+ * @addr: guest virtual address of guest code
+ *
+ * See get_page_addr_code() (full-system version) for documentation on the
+ * return value.
+ *
+ * Sets *@hostp (when @hostp is non-NULL) as follows.
+ * If the return value is -1, sets *@hostp to NULL. Otherwise, sets *@hostp
+ * to the host address where @addr's content is kept.
+ *
+ * Note: this function can trigger an exception.
+ */
+tb_page_addr_t get_page_addr_code_hostp(CPUArchState *env, target_ulong addr,
+                                        void **hostp);
+
 void tlb_reset_dirty(CPUState *cpu, ram_addr_t start1, ram_addr_t length);
 void tlb_set_dirty(CPUState *cpu, target_ulong vaddr);