[PATCH 1/2] gdb: Introduce new language field la_struct_too_deep_ellipsis

[Andrew Burgess <andrew.burgess@embecosm.com>]

This commit is preparation work for the next commit, and by itself
makes no user visible change to GDB.  I've split this work into a
separate commit in order to make code review easier.

This commit adds a new field 'la_struct_too_deep_ellipsis' to the
language struct, this string will be used in the next commit to print
a language specific string from within the generic value printing
code.

In this commit I add the new field and initialise it for each
language, however at this stage the new field is never used.

gdb/ChangeLog:

	* language.h (struct language_defn) <la_struct_too_deep_ellipsis>:
	New field.
	* ada-lang.c (ada_language_defn): Initialise new field.
	* c-lang.c (c_language_defn): Likewise.
	(cplus_language_defn): Likewise.
	(asm_language_defn): Likewise.
	(minimal_language_defn): Likewise.
	* d-lang.c (d_language_defn): Likewise.
	* f-lang.c (f_language_defn): Likewise.
	* go-lang.c (go_language_defn): Likewise.
	* language.c (unknown_language_defn): Likewise.
	(auto_language_defn): Likewise.
	* m2-lang.c (m2_language_defn): Likewise.
	* objc-lang.c (objc_language_defn): Likewise.
	* opencl-lang.c (opencl_language_defn): Likewise.
	* p-lang.c (pascal_language_defn): Likewise.
	* rust-lang.c (rust_language_defn): Likewise.
---
 gdb/ChangeLog     | 20 ++++++++++++++++++++
 gdb/ada-lang.c    |  1 +
 gdb/c-lang.c      |  4 ++++
 gdb/d-lang.c      |  1 +
 gdb/f-lang.c      |  1 +
 gdb/go-lang.c     |  1 +
 gdb/language.c    |  2 ++
 gdb/language.h    |  5 +++++
 gdb/m2-lang.c     |  1 +
 gdb/objc-lang.c   |  1 +
 gdb/opencl-lang.c |  1 +
 gdb/p-lang.c      |  1 +
 gdb/rust-lang.c   |  1 +
 13 files changed, 40 insertions(+)

diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c
index 692d52a9551..b7cd63ab5a7 100644
--- a/gdb/ada-lang.c
+++ b/gdb/ada-lang.c
@@ -14380,6 +14380,7 @@ extern const struct language_defn ada_language_defn = {
   &ada_varobj_ops,
   NULL,
   NULL,
+  "(...)",			/* la_struct_too_deep_ellipsis */
   LANG_MAGIC
 };
 
diff --git a/gdb/c-lang.c b/gdb/c-lang.c
index 36c750204da..cc414135be3 100644
--- a/gdb/c-lang.c
+++ b/gdb/c-lang.c
@@ -874,6 +874,7 @@ extern const struct language_defn c_language_defn =
   &c_varobj_ops,
   c_get_compile_context,
   c_compute_program,
+  "{...}",			/* la_struct_too_deep_ellipsis */
   LANG_MAGIC
 };
 
@@ -1019,6 +1020,7 @@ extern const struct language_defn cplus_language_defn =
   &cplus_varobj_ops,
   cplus_get_compile_context,
   cplus_compute_program,
+  "{...}",			/* la_struct_too_deep_ellipsis */
   LANG_MAGIC
 };
 
@@ -1073,6 +1075,7 @@ extern const struct language_defn asm_language_defn =
   &default_varobj_ops,
   NULL,
   NULL,
+  "{...}",			/* la_struct_too_deep_ellipsis */
   LANG_MAGIC
 };
 
@@ -1127,5 +1130,6 @@ extern const struct language_defn minimal_language_defn =
   &default_varobj_ops,
   NULL,
   NULL,
+  "{...}",			/* la_struct_too_deep_ellipsis */
   LANG_MAGIC
 };
diff --git a/gdb/d-lang.c b/gdb/d-lang.c
index 637e012b32e..a5c8ce27941 100644
--- a/gdb/d-lang.c
+++ b/gdb/d-lang.c
@@ -251,6 +251,7 @@ extern const struct language_defn d_language_defn =
   &default_varobj_ops,
   NULL,
   NULL,
+  "{...}",			/* la_struct_too_deep_ellipsis */
   LANG_MAGIC
 };
 
diff --git a/gdb/f-lang.c b/gdb/f-lang.c
index 7bd119690b4..c894c105d16 100644
--- a/gdb/f-lang.c
+++ b/gdb/f-lang.c
@@ -378,6 +378,7 @@ extern const struct language_defn f_language_defn =
   &default_varobj_ops,
   NULL,
   NULL,
+  "(...)",			/* la_struct_too_deep_ellipsis */
   LANG_MAGIC
 };
 
diff --git a/gdb/go-lang.c b/gdb/go-lang.c
index 5af88f805a7..9718c69c861 100644
--- a/gdb/go-lang.c
+++ b/gdb/go-lang.c
@@ -612,6 +612,7 @@ extern const struct language_defn go_language_defn =
   &default_varobj_ops,
   NULL,
   NULL,
+  "{...}",			/* la_struct_too_deep_ellipsis */
   LANG_MAGIC
 };
 
diff --git a/gdb/language.c b/gdb/language.c
index ea294e670b6..69696d62f6e 100644
--- a/gdb/language.c
+++ b/gdb/language.c
@@ -878,6 +878,7 @@ const struct language_defn unknown_language_defn =
   &default_varobj_ops,
   NULL,
   NULL,
+  "{...}",			/* la_struct_too_deep_ellipsis */
   LANG_MAGIC
 };
 
@@ -929,6 +930,7 @@ const struct language_defn auto_language_defn =
   &default_varobj_ops,
   NULL,
   NULL,
+  "{...}",			/* la_struct_too_deep_ellipsis */
   LANG_MAGIC
 };
 
diff --git a/gdb/language.h b/gdb/language.h
index d56ec200208..ba875760f00 100644
--- a/gdb/language.h
+++ b/gdb/language.h
@@ -446,6 +446,11 @@ struct language_defn
 				       const struct block *expr_block,
 				       CORE_ADDR expr_pc);
 
+    /* This string is used by the 'set print max-depth' setting.  When GDB
+       replaces a struct or union (during value printing) that is "too
+       deep" this string is displayed instead.  */
+    const char *la_struct_too_deep_ellipsis;
+
     /* Add fields above this point, so the magic number is always last.  */
     /* Magic number for compat checking.  */
 
diff --git a/gdb/m2-lang.c b/gdb/m2-lang.c
index 1a72aba73c9..004fd7022cb 100644
--- a/gdb/m2-lang.c
+++ b/gdb/m2-lang.c
@@ -399,6 +399,7 @@ extern const struct language_defn m2_language_defn =
   &default_varobj_ops,
   NULL,
   NULL,
+  "{...}",			/* la_struct_too_deep_ellipsis */
   LANG_MAGIC
 };
 
diff --git a/gdb/objc-lang.c b/gdb/objc-lang.c
index ceef482ae35..2316f1e90e0 100644
--- a/gdb/objc-lang.c
+++ b/gdb/objc-lang.c
@@ -409,6 +409,7 @@ extern const struct language_defn objc_language_defn = {
   &default_varobj_ops,
   NULL,
   NULL,
+  "{...}",			/* la_struct_too_deep_ellipsis */
   LANG_MAGIC
 };
 
diff --git a/gdb/opencl-lang.c b/gdb/opencl-lang.c
index 03699b14251..7ab95c9a94a 100644
--- a/gdb/opencl-lang.c
+++ b/gdb/opencl-lang.c
@@ -1087,6 +1087,7 @@ extern const struct language_defn opencl_language_defn =
   &default_varobj_ops,
   NULL,
   NULL,
+  "{...}",			/* la_struct_too_deep_ellipsis */
   LANG_MAGIC
 };
 
diff --git a/gdb/p-lang.c b/gdb/p-lang.c
index b61273f356b..c94ab5f21bb 100644
--- a/gdb/p-lang.c
+++ b/gdb/p-lang.c
@@ -460,5 +460,6 @@ extern const struct language_defn pascal_language_defn =
   &default_varobj_ops,
   NULL,
   NULL,
+  "{...}",			/* la_struct_too_deep_ellipsis */
   LANG_MAGIC
 };
diff --git a/gdb/rust-lang.c b/gdb/rust-lang.c
index 0c6c13d738e..926580ff96c 100644
--- a/gdb/rust-lang.c
+++ b/gdb/rust-lang.c
@@ -2143,5 +2143,6 @@ extern const struct language_defn rust_language_defn =
   &default_varobj_ops,
   NULL,
   NULL,
+  "(...)",			/* la_struct_too_deep_ellipsis */
   LANG_MAGIC
 };
-- 
2.14.5