gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gas / expr.h

diff --git a/gas/expr.h b/gas/expr.h
index d63ab7fa04a749574300b6c33fd725d88a1ad3ad..c3e617401c4e4d2e4af1680f110fa4f0d60e85b8 100644 (file)
--- a/gas/expr.h
+++ b/gas/expr.h
@@ -1,11 +1,11 @@
 /* expr.h -> header file for expr.c
-   Copyright (C) 1987, 92-99, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1987-2020 Free Software Foundation, Inc.
 
    This file is part of GAS, the GNU Assembler.
 
    GAS is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
+   the Free Software Foundation; either version 3, or (at your option)
    any later version.
 
    GAS is distributed in the hope that it will be useful,
@@ -15,8 +15,8 @@
 
    You should have received a copy of the GNU General Public License
    along with GAS; see the file COPYING.  If not, write to the Free
-   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-   02111-1307, USA.  */
+   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
 
 /*
  * By popular demand, we define a struct to represent an expression.
@@ -67,23 +67,23 @@ typedef enum {
   O_multiply,
   /* (X_add_symbol / X_op_symbol) + X_add_number.  */
   O_divide,
-  /* X_add_symbol % X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol % X_op_symbol) + X_add_number.  */
   O_modulus,
-  /* X_add_symbol << X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol << X_op_symbol) + X_add_number.  */
   O_left_shift,
-  /* X_add_symbol >> X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol >> X_op_symbol) + X_add_number.  */
   O_right_shift,
-  /* X_add_symbol | X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol | X_op_symbol) + X_add_number.  */
   O_bit_inclusive_or,
-  /* X_add_symbol |~ X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol |~ X_op_symbol) + X_add_number.  */
   O_bit_or_not,
-  /* X_add_symbol ^ X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol ^ X_op_symbol) + X_add_number.  */
   O_bit_exclusive_or,
-  /* X_add_symbol & X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol & X_op_symbol) + X_add_number.  */
   O_bit_and,
-  /* X_add_symbol + X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol + X_op_symbol) + X_add_number.  */
   O_add,
-  /* X_add_symbol - X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol - X_op_symbol) + X_add_number.  */
   O_subtract,
   /* (X_add_symbol == X_op_symbol) + X_add_number.  */
   O_eq,
@@ -106,6 +106,8 @@ typedef enum {
   /* machine dependent operators */
   O_md1,  O_md2,  O_md3,  O_md4,  O_md5,  O_md6,  O_md7,  O_md8,
   O_md9,  O_md10, O_md11, O_md12, O_md13, O_md14, O_md15, O_md16,
+  O_md17, O_md18, O_md19, O_md20, O_md21, O_md22, O_md23, O_md24,
+  O_md25, O_md26, O_md27, O_md28, O_md29, O_md30, O_md31, O_md32,
   /* this must be the largest value */
   O_max
 } operatorT;
@@ -133,6 +135,11 @@ typedef struct expressionS {
      when performing arithmetic on these values).
      FIXME: This field is not set very reliably.  */
   unsigned int X_unsigned : 1;
+  /* This is used to implement "word size + 1 bit" arithmetic, so that e.g.
+     expressions used with .sleb128 directives can use the full range available
+     for an unsigned word, but can also properly represent all values of a
+     signed word.  */
+  unsigned int X_extrabit : 1;
 
   /* 7 additional bits can be defined if needed.  */
 
@@ -140,8 +147,17 @@ typedef struct expressionS {
   unsigned short X_md;
 } expressionS;
 
+enum expr_mode
+{
+  expr_evaluate,
+  expr_normal,
+  expr_defer
+};
+
 /* "result" should be type (expressionS *).  */
-#define expression(result) expr (0, result)
+#define expression(result) expr (0, result, expr_normal)
+#define expression_and_evaluate(result) expr (0, result, expr_evaluate)
+#define deferred_expression(result) expr (0, result, expr_defer)
 
 /* If an expression is O_big, look here for its value. These common
    data may be clobbered whenever expr() is called.  */
@@ -154,16 +170,22 @@ extern LITTLENUM_TYPE generic_bignum[];
 
 typedef char operator_rankT;
 
-extern char get_symbol_end PARAMS ((void));
-extern void expr_begin PARAMS ((void));
-extern void expr_set_precedence PARAMS ((void));
-extern segT expr PARAMS ((int rank, expressionS * resultP));
-extern unsigned int get_single_number PARAMS ((void));
-extern symbolS *make_expr_symbol PARAMS ((expressionS * expressionP));
-extern int expr_symbol_where
-  PARAMS ((symbolS *, char **, unsigned int *));
-
-extern symbolS *expr_build_uconstant PARAMS ((offsetT));
-extern symbolS *expr_build_unary PARAMS ((operatorT, symbolS *));
-extern symbolS *expr_build_binary PARAMS ((operatorT, symbolS *, symbolS *));
-extern symbolS *expr_build_dot PARAMS ((void));
+extern char get_symbol_name (char **);
+extern char restore_line_pointer (char);
+extern void expr_begin (void);
+extern void expr_set_precedence (void);
+extern void expr_set_rank (operatorT, operator_rankT);
+extern void add_to_result (expressionS *, offsetT, int);
+extern void subtract_from_result (expressionS *, offsetT, int);
+extern segT expr (int, expressionS *, enum expr_mode);
+extern unsigned int get_single_number (void);
+extern symbolS *make_expr_symbol (expressionS * expressionP);
+extern int expr_symbol_where (symbolS *, const char **, unsigned int *);
+extern void current_location (expressionS *);
+
+extern symbolS *expr_build_uconstant (offsetT);
+extern symbolS *expr_build_dot (void);
+
+int resolve_expression (expressionS *);
+
+extern bfd_boolean literal_prefix_dollar_hex;