gdb: extend the information printed by 'maint info jit'

This commit updates the output of 'maint info jit' to print not just
the jit_code_entry address, but also the symfile address, and the
symfile size.

The new information could be obtained by looking into target memory at
the contents of the jit_code_entry, but, by storing this information
within gdb at the time the jit object is loaded, it is now possible to
check if the jit_code_entry has been modified in target memory behind
gdb's back.

Additionally, the symfile address is the same address that is now used
in the objfile names after commit 4a620b7e.

One test that relies on the output of 'maint info jit' was updated to
allow for the new output format.

1 files changed, 11 insertions, 2 deletions

diff --git a/gdb/jit.h b/gdb/jit.h
index 09dbce2..274ce45 100644
--- a/gdb/jit.h
+++ b/gdb/jit.h
@@ -95,12 +95,21 @@ struct jiter_objfile_data
 
 struct jited_objfile_data
 {
-  jited_objfile_data (CORE_ADDR addr)
-    : addr (addr)
+  jited_objfile_data (CORE_ADDR addr, CORE_ADDR symfile_addr,
+		      ULONGEST symfile_size)
+    : addr (addr),
+      symfile_addr (symfile_addr),
+      symfile_size (symfile_size)
   {}
 
   /* Address of struct jit_code_entry for this objfile.  */
   CORE_ADDR addr;
+
+  /* Value of jit_code_entry->symfile_addr for this objfile.  */
+  CORE_ADDR symfile_addr;
+
+  /* Value of jit_code_entry->symfile_size for this objfile.  */
+  ULONGEST symfile_size;
 };
 
 /* Re-establish the jit breakpoint(s).  */