You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Parse an expression from text in a string,
and return the result as a struct expression pointer.
come first in the result. */
#include "defs.h"
-#include <string.h>
+#include "gdb_string.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "frame.h"
void
write_exp_elt_dblcst (expelt)
- double expelt;
+ DOUBLEST expelt;
{
union exp_element tmp;
write_exp_elt_opcode (UNOP_MEMVAL);
}
\f
+/* Recognize tokens that start with '$'. These include:
+
+ $regname A native register name or a "standard
+ register name".
+
+ $variable A convenience variable with a name chosen
+ by the user.
+
+ $digits Value history with index <digits>, starting
+ from the first value which has index 1.
+
+ $$digits Value history with index <digits> relative
+ to the last value. I.E. $$0 is the last
+ value, $$1 is the one previous to that, $$2
+ is the one previous to $$1, etc.
+
+ $ | $0 | $$0 The last value in the value history.
+
+ $$ An abbreviation for the second to the last
+ value in the value history, I.E. $$1
+
+ */
+
+void
+write_dollar_variable (str)
+ struct stoken str;
+{
+ /* Handle the tokens $digits; also $ (short for $0) and $$ (short for $$1)
+ and $$digits (equivalent to $<-digits> if you could type that). */
+
+ int negate = 0;
+ int i = 1;
+ /* Double dollar means negate the number and add -1 as well.
+ Thus $$ alone means -1. */
+ if (str.length >= 2 && str.ptr[1] == '$')
+ {
+ negate = 1;
+ i = 2;
+ }
+ if (i == str.length)
+ {
+ /* Just dollars (one or two) */
+ i = - negate;
+ goto handle_last;
+ }
+ /* Is the rest of the token digits? */
+ for (; i < str.length; i++)
+ if (!(str.ptr[i] >= '0' && str.ptr[i] <= '9'))
+ break;
+ if (i == str.length)
+ {
+ i = atoi (str.ptr + 1 + negate);
+ if (negate)
+ i = - i;
+ goto handle_last;
+ }
+
+ /* Handle tokens that refer to machine registers:
+ $ followed by a register name. */
+ for (i = 0; i < NUM_REGS; i++)
+ if (reg_names[i] && str.length - 1 == strlen (reg_names[i])
+ && STREQN (str.ptr + 1, reg_names[i], str.length - 1))
+ {
+ goto handle_register;
+ }
+ for (i = 0; i < num_std_regs; i++)
+ if (std_regs[i].name && str.length - 1 == strlen (std_regs[i].name)
+ && STREQN (str.ptr + 1, std_regs[i].name, str.length - 1))
+ {
+ i = std_regs[i].regnum;
+ goto handle_register;
+ }
+
+ /* Any other names starting in $ are debugger internal variables. */
+
+ write_exp_elt_opcode (OP_INTERNALVAR);
+ write_exp_elt_intern (lookup_internalvar (copy_name (str) + 1));
+ write_exp_elt_opcode (OP_INTERNALVAR);
+ return;
+ handle_last:
+ write_exp_elt_opcode (OP_LAST);
+ write_exp_elt_longcst ((LONGEST) i);
+ write_exp_elt_opcode (OP_LAST);
+ return;
+ handle_register:
+ write_exp_elt_opcode (OP_REGISTER);
+ write_exp_elt_longcst (i);
+ write_exp_elt_opcode (OP_REGISTER);
+ return;
+}
+\f
/* Return a null-terminated temporary copy of the name
of a string token. */
args = 2;
break;
- case OP_F77_SUBSTR:
- oplen = 1;
- args = 2;
- break;
-
case OP_FUNCALL:
case OP_F77_UNDETERMINED_ARGLIST:
oplen = 3;
case OP_LABELED:
case STRUCTOP_STRUCT:
case STRUCTOP_PTR:
+/* start-sanitize-gm */
+#ifdef GENERAL_MAGIC
+ case STRUCTOP_FIELD:
+#endif /* GENERAL_MAGIC */
+/* end-sanitize-gm */
args = 1;
/* fall through */
case OP_M2_STRING:
case OP_STRING:
+ case OP_NAME:
+ case OP_EXPRSTRING:
oplen = longest_to_int (expr->elts[endpos - 2].longconst);
oplen = 4 + BYTES_TO_EXP_ELEM (oplen + 1);
break;
/* Modula-2 */
case MULTI_SUBSCRIPT:
- /* Fortran */
- case MULTI_F77_SUBSCRIPT:
oplen = 3;
args = 1 + longest_to_int (expr->elts[endpos- 2].longconst);
break;
args = 2;
break;
- case OP_F77_SUBSTR:
- oplen = 1;
- args = 2;
- break;
-
case OP_FUNCALL:
case OP_F77_UNDETERMINED_ARGLIST:
oplen = 3;
/* fall through */
case OP_M2_STRING:
case OP_STRING:
+ case OP_NAME:
+ case OP_EXPRSTRING:
oplen = longest_to_int (inexpr->elts[inend - 2].longconst);
oplen = 4 + BYTES_TO_EXP_ELEM (oplen + 1);
break;
/* Modula-2 */
case MULTI_SUBSCRIPT:
- /* Fortran */
- case MULTI_F77_SUBSCRIPT:
oplen = 3;
args = 1 + longest_to_int (inexpr->elts[inend - 2].longconst);
break;
break;
case tp_array:
array_size = pop_type_int ();
- if (array_size != -1)
- {
- range_type =
- create_range_type ((struct type *) NULL,
- builtin_type_int, 0,
- array_size - 1);
- follow_type =
- create_array_type ((struct type *) NULL,
- follow_type, range_type);
- }
- else
- follow_type = lookup_pointer_type (follow_type);
+ /* FIXME-type-allocation: need a way to free this type when we are
+ done with it. */
+ range_type =
+ create_range_type ((struct type *) NULL,
+ builtin_type_int, 0,
+ array_size >= 0 ? array_size - 1 : 0);
+ follow_type =
+ create_array_type ((struct type *) NULL,
+ follow_type, range_type);
+ if (array_size < 0)
+ TYPE_ARRAY_UPPER_BOUND_TYPE(follow_type)
+ = BOUND_CANNOT_BE_DETERMINED;
break;
case tp_function:
+ /* FIXME-type-allocation: need a way to free this type when we are
+ done with it. */
follow_type = lookup_function_type (follow_type);
break;
}
projects / deliverable / binutils-gdb.git / blobdiff