2004-08-29 David Lecomber <david@streamline-computing.com>

	Fix PR gdb/648
	* language.h (enum array_ordering): New enum.
	* language.h (struct language_defn): New la_array_ordering
	attribute.
	* language.c (unknown_language_defn, auto_language_defn)
	(local_language_defn): Ditto.
	* ada-lang.c (ada_language_defn): Ditto.
	* c-lang.c (c_language_defn, cplus_language_defn)
	(asm_language_defn, minimal_language_defn): Ditto.
	* f-lang.c (f_language_defn): Ditto.
	* jv-lang.c (java_language_defn): Ditto.
	* m2-lang.c (f_language_defn): Ditto.
	* objc-lang.c (objc_language_defn): Ditto.
	* p-lang.c (pascal_language_defn): Ditto.
	* scm-lang.c (scm_language_defn): Ditto.
	* eval.c (evaluate_subexp_standard): Assume Fortran arrays are
	oriented large to small in type structure.
	* dwarf2read.c (read_array_order): New function.
	(read_array_type): Use read_array_order to check row/column
	major ordering.

13 files changed, 116 insertions, 12 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index e5fa224..c141526 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,26 @@
+2004-08-29  David Lecomber  <david@streamline-computing.com>
+	
+	Fix PR gdb/648
+	* language.h (enum array_ordering): New enum.
+	* language.h (struct language_defn): New la_array_ordering 
+	attribute.
+	* language.c (unknown_language_defn, auto_language_defn)
+	(local_language_defn): Ditto.
+	* ada-lang.c (ada_language_defn): Ditto.
+	* c-lang.c (c_language_defn, cplus_language_defn)
+	(asm_language_defn, minimal_language_defn): Ditto.
+	* f-lang.c (f_language_defn): Ditto.
+	* jv-lang.c (java_language_defn): Ditto.
+	* m2-lang.c (f_language_defn): Ditto.
+	* objc-lang.c (objc_language_defn): Ditto.
+	* p-lang.c (pascal_language_defn): Ditto.
+	* scm-lang.c (scm_language_defn): Ditto.
+	* eval.c (evaluate_subexp_standard): Assume Fortran arrays are
+	oriented large to small in type structure.
+	* dwarf2read.c (read_array_order): New function.
+	(read_array_type): Use read_array_order to check row/column
+	major ordering.
+
 2004-08-27  Nathan J. Williams  <nathanw@wasabisystems.com>
 
 	* target.c (target_resize_to_sections): Check
diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c
index 1bb3ca0..fd73fc5 100644
--- a/gdb/ada-lang.c
+++ b/gdb/ada-lang.c
@@ -10166,6 +10166,7 @@ const struct language_defn ada_language_defn = {
   ada_lookup_symbol,
   ada_lookup_minimal_symbol,
 #endif /* GNAT_GDB */
+  array_row_major,
   &ada_exp_descriptor,
   parse,
   ada_error,
diff --git a/gdb/c-lang.c b/gdb/c-lang.c
index 5ab15b8..ad8fa5c 100644
--- a/gdb/c-lang.c
+++ b/gdb/c-lang.c
@@ -570,6 +570,7 @@ const struct language_defn c_language_defn =
   range_check_off,
   type_check_off,
   case_sensitive_on,
+  array_row_major,
   &exp_descriptor_standard,
   c_preprocess_and_parse,
   c_error,
@@ -631,6 +632,7 @@ const struct language_defn cplus_language_defn =
   range_check_off,
   type_check_off,
   case_sensitive_on,
+  array_row_major,
   &exp_descriptor_standard,
   c_preprocess_and_parse,
   c_error,
@@ -669,6 +671,7 @@ const struct language_defn asm_language_defn =
   range_check_off,
   type_check_off,
   case_sensitive_on,
+  array_row_major,
   &exp_descriptor_standard,
   c_preprocess_and_parse,
   c_error,
@@ -712,6 +715,7 @@ const struct language_defn minimal_language_defn =
   range_check_off,
   type_check_off,
   case_sensitive_on,
+  array_row_major,
   &exp_descriptor_standard,
   c_preprocess_and_parse,
   c_error,
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index fa11475..4e9cdfa 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -848,6 +848,9 @@ static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *);
 
 static void read_array_type (struct die_info *, struct dwarf2_cu *);
 
+static enum dwarf_array_dim_ordering read_array_order (struct die_info *, 
+						       struct dwarf2_cu *);
+
 static void read_tag_pointer_type (struct die_info *, struct dwarf2_cu *);
 
 static void read_tag_ptr_to_member_type (struct die_info *,
@@ -3724,9 +3727,20 @@ read_array_type (struct die_info *die, struct dwarf2_cu *cu)
 
   /* Dwarf2 dimensions are output from left to right, create the
      necessary array types in backwards order.  */
+
   type = element_type;
-  while (ndim-- > 0)
-    type = create_array_type (NULL, type, range_types[ndim]);
+
+  if (read_array_order (die, cu) == DW_ORD_col_major)
+    {
+      int i = 0;
+      while (i < ndim)
+	type = create_array_type (NULL, type, range_types[i++]);
+    }
+  else
+    {
+      while (ndim-- > 0)
+	type = create_array_type (NULL, type, range_types[ndim]);
+    }
 
   /* Understand Dwarf2 support for vector types (like they occur on
      the PowerPC w/ AltiVec).  Gcc just adds another attribute to the
@@ -3744,6 +3758,41 @@ read_array_type (struct die_info *die, struct dwarf2_cu *cu)
   die->type = type;
 }
 
+static enum dwarf_array_dim_ordering
+read_array_order (struct die_info *die, struct dwarf2_cu *cu) 
+{
+  struct attribute *attr;
+
+  attr = dwarf2_attr (die, DW_AT_ordering, cu);
+
+  if (attr) return DW_SND (attr);
+
+  /*
+    GNU F77 is a special case, as at 08/2004 array type info is the
+    opposite order to the dwarf2 specification, but data is still 
+    laid out as per normal fortran.
+
+    FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need 
+    version checking.
+  */
+
+  if (cu->language == language_fortran &&
+      cu->producer && strstr (cu->producer, "GNU F77"))
+    {
+      return DW_ORD_row_major;
+    }
+
+  switch (cu->language_defn->la_array_ordering) 
+    {
+    case array_column_major:
+      return DW_ORD_col_major;
+    case array_row_major:
+    default:
+      return DW_ORD_row_major;
+    };
+}
+
+
 /* First cut: install each common block member as a global variable.  */
 
 static void
diff --git a/gdb/eval.c b/gdb/eval.c
index b690a78..4418e0a 100644
--- a/gdb/eval.c
+++ b/gdb/eval.c
@@ -1610,9 +1610,8 @@ evaluate_subexp_standard (struct type *expect_type,
 
     multi_f77_subscript:
       {
-	int subscript_array[MAX_FORTRAN_DIMS + 1];	/* 1-based array of 
-							   subscripts, max == 7 */
-	int array_size_array[MAX_FORTRAN_DIMS + 1];
+	int subscript_array[MAX_FORTRAN_DIMS];
+	int array_size_array[MAX_FORTRAN_DIMS];
 	int ndimensions = 1, i;
 	struct type *tmp_type;
 	int offset_item;	/* The array offset where the item lives */
@@ -1630,7 +1629,8 @@ evaluate_subexp_standard (struct type *expect_type,
 	   let us actually find out where this element exists in the array. */
 
 	offset_item = 0;
-	for (i = 1; i <= nargs; i++)
+	/* Take array indices left to right */
+	for (i = 0; i < nargs; i++)
 	  {
 	    /* Evaluate each subscript, It must be a legal integer in F77 */
 	    arg2 = evaluate_subexp_with_coercion (exp, pos, noside);
@@ -1638,7 +1638,11 @@ evaluate_subexp_standard (struct type *expect_type,
 	    /* Fill in the subscript and array size arrays */
 
 	    subscript_array[i] = value_as_long (arg2);
+	  }
 
+	/* Internal type of array is arranged right to left */
+	for (i = 0; i < nargs; i++)
+	  {
 	    retcode = f77_get_dynamic_upperbound (tmp_type, &upper);
 	    if (retcode == BOUND_FETCH_ERROR)
 	      error ("Cannot obtain dynamic upper bound");
@@ -1647,11 +1651,11 @@ evaluate_subexp_standard (struct type *expect_type,
 	    if (retcode == BOUND_FETCH_ERROR)
 	      error ("Cannot obtain dynamic lower bound");
 
-	    array_size_array[i] = upper - lower + 1;
+	    array_size_array[nargs - i - 1] = upper - lower + 1;
 
 	    /* Zero-normalize subscripts so that offsetting will work. */
 
-	    subscript_array[i] -= lower;
+	    subscript_array[nargs - i - 1] -= lower;
 
 	    /* If we are at the bottom of a multidimensional 
 	       array type then keep a ptr to the last ARRAY
@@ -1661,17 +1665,17 @@ evaluate_subexp_standard (struct type *expect_type,
 	       of base element type that we apply a simple 
 	       offset to. */
 
-	    if (i < nargs)
+	    if (i < nargs - 1)
 	      tmp_type = check_typedef (TYPE_TARGET_TYPE (tmp_type));
 	  }
 
 	/* Now let us calculate the offset for this item */
 
-	offset_item = subscript_array[ndimensions];
+	offset_item = subscript_array[ndimensions - 1];
 
-	for (i = ndimensions - 1; i >= 1; i--)
+	for (i = ndimensions - 1; i > 0; --i)
 	  offset_item =
-	    array_size_array[i] * offset_item + subscript_array[i];
+	    array_size_array[i - 1] * offset_item + subscript_array[i - 1];
 
 	/* Construct a value node with the value of the offset */
 
diff --git a/gdb/f-lang.c b/gdb/f-lang.c
index e354cad..8430c97 100644
--- a/gdb/f-lang.c
+++ b/gdb/f-lang.c
@@ -462,6 +462,7 @@ const struct language_defn f_language_defn =
   range_check_on,
   type_check_on,
   case_sensitive_off,
+  array_column_major,
   &exp_descriptor_standard,
   f_parse,			/* parser */
   f_error,			/* parser error function */
diff --git a/gdb/jv-lang.c b/gdb/jv-lang.c
index 30a75c0..fd0e712 100644
--- a/gdb/jv-lang.c
+++ b/gdb/jv-lang.c
@@ -1088,6 +1088,7 @@ const struct language_defn java_language_defn =
   range_check_off,
   type_check_off,
   case_sensitive_on,
+  array_row_major,
   &exp_descriptor_java,
   java_parse,
   java_error,
diff --git a/gdb/language.c b/gdb/language.c
index d1a1fb9..dfbfa3a 100644
--- a/gdb/language.c
+++ b/gdb/language.c
@@ -1294,6 +1294,7 @@ const struct language_defn unknown_language_defn =
   NULL,
   range_check_off,
   type_check_off,
+  array_row_major,
   case_sensitive_on,
   &exp_descriptor_standard,
   unk_lang_parser,
@@ -1333,6 +1334,7 @@ const struct language_defn auto_language_defn =
   NULL,
   range_check_off,
   type_check_off,
+  array_row_major,
   case_sensitive_on,
   &exp_descriptor_standard,
   unk_lang_parser,
@@ -1372,6 +1374,7 @@ const struct language_defn local_language_defn =
   range_check_off,
   type_check_off,
   case_sensitive_on,
+  array_row_major,
   &exp_descriptor_standard,
   unk_lang_parser,
   unk_lang_error,
diff --git a/gdb/language.h b/gdb/language.h
index 489ca23..98bdc3e 100644
--- a/gdb/language.h
+++ b/gdb/language.h
@@ -96,6 +96,17 @@ extern enum case_mode
   }
 case_mode;
 
+/* array_ordering ==
+   array_row_major:     Arrays are in row major order
+   array_column_major:  Arrays are in column major order.*/
+
+extern enum array_ordering
+  {
+    array_row_major, array_column_major
+  } 
+array_ordering;
+
+
 /* case_sensitivity ==
    case_sensitive_on:   Case sensitivity in name matching is used
    case_sensitive_off:  Case sensitivity in name matching is not used  */
@@ -187,6 +198,9 @@ struct language_defn
     /* Default case sensitivity */
     enum case_sensitivity la_case_sensitivity;
 
+    /* Multi-dimensional array ordering */
+    enum array_ordering la_array_ordering;
+
     /* Definitions related to expression printing, prefixifying, and
        dumping */
 
diff --git a/gdb/m2-lang.c b/gdb/m2-lang.c
index 722805e..746b2f4 100644
--- a/gdb/m2-lang.c
+++ b/gdb/m2-lang.c
@@ -415,6 +415,7 @@ const struct language_defn m2_language_defn =
   range_check_on,
   type_check_on,
   case_sensitive_on,
+  array_row_major,
   &exp_descriptor_standard,
   m2_parse,			/* parser */
   m2_error,			/* parser error function */
diff --git a/gdb/objc-lang.c b/gdb/objc-lang.c
index b9e4897..b02af1c 100644
--- a/gdb/objc-lang.c
+++ b/gdb/objc-lang.c
@@ -659,6 +659,7 @@ const struct language_defn objc_language_defn = {
   range_check_off,
   type_check_off,
   case_sensitive_on,
+  array_row_major,
   &exp_descriptor_standard,
   objc_parse,
   objc_error,
diff --git a/gdb/p-lang.c b/gdb/p-lang.c
index 115bfe1..296a0ba 100644
--- a/gdb/p-lang.c
+++ b/gdb/p-lang.c
@@ -451,6 +451,7 @@ const struct language_defn pascal_language_defn =
   range_check_on,
   type_check_on,
   case_sensitive_on,
+  array_row_major,
   &exp_descriptor_standard,
   pascal_parse,
   pascal_error,
diff --git a/gdb/scm-lang.c b/gdb/scm-lang.c
index 4b1db15..c459b81 100644
--- a/gdb/scm-lang.c
+++ b/gdb/scm-lang.c
@@ -248,6 +248,7 @@ const struct language_defn scm_language_defn =
   range_check_off,
   type_check_off,
   case_sensitive_off,
+  array_row_major,
   &exp_descriptor_scm,
   scm_parse,
   c_error,