2 * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation and appearing in the file LICENSE.GPL included in the
9 * packaging of this file.
11 * Licensees holding valid libFirm Professional Edition licenses may use
12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief Type definitions for ia32 node attributes.
23 * @author Christian Wuerdig
26 #ifndef FIRM_BE_IA32_IA32_NODES_ATTR_H
27 #define FIRM_BE_IA32_IA32_NODES_ATTR_H
29 #include "firm_config.h"
31 #include "firm_types.h"
32 #include "../bearch_t.h"
33 #include "../bemachine.h"
36 typedef enum { flavour_Div = 1, flavour_Mod, flavour_DivMod } ia32_op_flavour_t;
37 typedef enum { pn_EAX, pn_EDX } pn_ia32_Register;
52 ia32_am_None = 0, /**<< no addrmode support */
53 ia32_am_Dest = 1, /**<< addrmode for destination only */
54 ia32_am_Source = 2, /**<< addrmode for source only */
55 ia32_am_Full = 3, /**<< full addmode support */
59 ia32_am_arity_none = 0,
65 * Different Address Mode properties:
72 ia32_O = (1 << 0), /**< O - Offset is set */
73 ia32_B = (1 << 1), /**< B - Base is set */
74 ia32_I = (1 << 2), /**< I - Index is set */
75 ia32_S = (1 << 3) /**< S - Scale is set */
78 /** Possible Address mode types */
84 ia32_am_IS = ia32_I | ia32_S,
85 ia32_am_BI = ia32_B | ia32_I,
86 ia32_am_OB = ia32_O | ia32_B,
87 ia32_am_OIS = ia32_O | ia32_I | ia32_S,
88 ia32_am_OBIS = ia32_O | ia32_B | ia32_I | ia32_S
92 ia32_pn_Cmp_Unsigned = 0x100 /**< set this flag in a pnc to indicate an unsigned compare operation */
97 IA32_ATTR_INVALID = 0,
98 IA32_ATTR_ia32_attr_t = 1 << 0,
99 IA32_ATTR_ia32_x87_attr_t = 1 << 1,
100 IA32_ATTR_ia32_asm_attr_t = 1 << 2,
101 IA32_ATTR_ia32_immediate_attr_t = 1 << 3,
105 typedef struct ia32_attr_t ia32_attr_t;
107 except_attr exc; /**< the exception attribute. MUST be the first one. */
108 struct ia32_attr_data_bitfield {
109 unsigned tp:3; /**< ia32 node type. */
110 unsigned imm_tp:2; /**< ia32 immop type. */
111 unsigned am_support:2; /**< Indicates the address mode type supported by this node. */
112 unsigned am_arity : 2;
113 unsigned am_flavour:4; /**< The concrete address mode characteristics. */
114 unsigned am_scale:2; /**< The address mode scale for index register. */
115 unsigned am_sc_sign:1; /**< The sign bit of the address mode symconst. */
117 unsigned use_frame:1; /**< Indicates whether the operation uses the frame pointer or not. */
118 unsigned except_label:1; /**< Set if this node needs a label because of possible exception. */
120 ia32_op_flavour_t op_flav:2;/**< Flavour of an op (flavour_Div/Mod/DivMod). */
122 unsigned flags:4; /**< Indicating if spillable, rematerializeable, stack modifying and/or ignore. */
124 unsigned is_commutative:1; /**< Indicates whether op is commutative or not. */
126 unsigned emit_cl:1; /**< Indicates whether we must emit cl instead of ecx (needed for shifts). */
128 unsigned got_lea:1; /**< Indicates whether or not this node already consumed a LEA. */
130 unsigned need_stackent:1; /**< Set to 1 if node need space on stack. */
133 int *out_flags; /**< flags for each produced value */
135 int am_offs; /**< offsets for AddrMode */
136 ir_entity *am_sc; /**< SymConst for AddrMode */
139 tarval *tv; /**< tarval for immediate operations */
140 ir_entity *sc; /**< the symconst ident */
143 ir_mode *ls_mode; /**< Load/Store mode: This is the mode of the
144 value that is manipulated by this node. */
146 ir_entity *frame_ent; /**< the frame entity attached to this node */
148 long pn_code; /**< projnum "types" (e.g. indicate compare operators and argument numbers for switches) */
150 unsigned latency; /**< the latency of the instruction in clock cycles */
153 const char *orig_node; /**< holds the name of the original ir node */
154 unsigned attr_type; /**< bitfield indicating the attribute type */
157 const be_execution_unit_t ***exec_units; /**< list of units this operation can be executed on */
159 const arch_register_req_t **in_req; /**< register requirements for arguments */
160 const arch_register_req_t **out_req; /**< register requirements for results */
162 const arch_register_t **slots; /**< register slots for assigned registers */
164 COMPILETIME_ASSERT(sizeof(struct ia32_attr_data_bitfield) <= 4, attr_bitfield);
166 typedef struct ia32_immediate_attr_t ia32_immediate_attr_t;
167 struct ia32_immediate_attr_t {
173 typedef struct ia32_x87_attr_t ia32_x87_attr_t;
174 struct ia32_x87_attr_t {
176 const arch_register_t *x87[3]; /**< register slots for x87 register */
179 typedef struct ia32_asm_attr_t ia32_asm_attr_t;
180 struct ia32_asm_attr_t {
181 ia32_x87_attr_t x87_attr;
185 /* the following union is necessary to indicate to the compiler that we might want to cast
186 * the structs (we use them to simulate OO-inheritance) */
187 union allow_casts_attr_t_ {
189 ia32_x87_attr_t x87_attr;
190 ia32_asm_attr_t asm_attr;
191 ia32_immediate_attr_t immediate_attr;
195 #define CAST_IA32_ATTR(type,ptr) (assert( ((const ia32_attr_t*)(ptr))->attr_type & IA32_ATTR_ ## type ), (type*) (ptr))
196 #define CONST_CAST_IA32_ATTR(type,ptr) (assert( ((const ia32_attr_t*)(ptr))->attr_type & IA32_ATTR_ ## type ), (const type*) (ptr))
198 #define CAST_IA32_ATTR(type,ptr) ((type*) (ptr))
199 #define CONST_CAST_IA32_ATTR(type,ptr) ((const type*) (ptr))