2 * Copyright (C) 1995-2008 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_types.h"
30 #include "../bearch.h"
31 #include "../bemachine.h"
34 /** ia32 condition codes (the numbers correspond to the real encoding order) */
35 typedef enum ia32_condition_code_t {
36 ia32_cc_negated = 0x01, /**< negates condition */
38 ia32_cc_overflow = 0x00, /**< OF=1 */
39 ia32_cc_below = 0x02, /**< CF=1 */
40 ia32_cc_equal = 0x04, /**< ZF=1 */
41 ia32_cc_below_equal = 0x06, /**< ZF=1 or CF=1 */
42 ia32_cc_sign = 0x08, /**< SF=1 */
43 ia32_cc_parity = 0x0A, /**< PF=1 */
44 ia32_cc_less = 0x0C, /**< SF!=OF */
45 ia32_cc_less_equal = 0x0E, /**< ZF=1 or SF!=OF */
46 ia32_cc_not_overflow = ia32_cc_negated|ia32_cc_overflow, /**< OF=0 */
47 ia32_cc_above_equal = ia32_cc_negated|ia32_cc_below, /**< CF=0 */
48 ia32_cc_not_equal = ia32_cc_negated|ia32_cc_equal, /**< ZF=0 */
49 ia32_cc_above = ia32_cc_negated|ia32_cc_below_equal, /**< ZF=0 and CF=0 */
50 ia32_cc_not_sign = ia32_cc_negated|ia32_cc_sign, /**< SF=0 */
51 ia32_cc_not_parity = ia32_cc_negated|ia32_cc_parity, /**< PF=0 */
52 ia32_cc_greater_equal = ia32_cc_negated|ia32_cc_less, /**< SF=OF */
53 ia32_cc_greater = ia32_cc_negated|ia32_cc_less_equal, /**< ZF=0 and SF=OF */
55 /* the following codes are (unfortunately) NOT real hardware codes but
56 * simplify our backend as you need these combinations for some
57 * floatingpoint compares (the emitter will split them into multiple
59 ia32_cc_float_parity_cases = 0x20,
60 /* we need even more cases as inversing the cc is different for float
61 * comparisons (though for the following we need no special
62 * parity+x combinations) */
63 ia32_cc_additional_float_cases = 0x10,
65 /* make sure that the lower 4 bit correspond to the real encoding
66 * (of the comparison not involving the parity special) */
67 ia32_cc_float_equal = 0x34, /**< PF=0 and ZF=1 */
68 ia32_cc_float_below = 0x32, /**< PF=0 and CF=1 */
69 ia32_cc_float_below_equal = 0x36, /**< PF=0 and (ZF=1 or CF=1) */
70 ia32_cc_float_not_equal = ia32_cc_negated|ia32_cc_float_equal, /**< PF=1 or ZF=0 */
71 ia32_cc_float_unordered_above_equal
72 = ia32_cc_negated|ia32_cc_float_below, /**< PF=1 or CF=0 */
73 ia32_cc_float_unordered_above
74 = ia32_cc_negated|ia32_cc_float_below_equal, /**< PF=1 or (ZF=0 and CF=0) */
76 ia32_cc_float_unordered_below_equal = 0x16, /**< ZF=1 or CF=1 */
77 ia32_cc_float_unordered_below = 0x12, /**< CF=1 */
79 ia32_cc_negated|ia32_cc_float_unordered_below_equal, /**< ZF=0 and CF=0 */
80 ia32_cc_float_above_equal
81 = ia32_cc_negated|ia32_cc_float_unordered_below, /**< CF=0 */
82 } ia32_condition_code_t;
83 ENUM_BITSET(ia32_condition_code_t)
85 static inline ia32_condition_code_t ia32_negate_condition_code(
86 ia32_condition_code_t code)
88 return code ^ ia32_cc_negated;
91 static inline ia32_condition_code_t ia32_invert_condition_code(
92 ia32_condition_code_t code)
94 /* doesn't appear to have any systematic, so use a table */
96 case ia32_cc_below: return ia32_cc_above;
97 case ia32_cc_below_equal: return ia32_cc_above_equal;
98 case ia32_cc_above: return ia32_cc_below;
99 case ia32_cc_above_equal: return ia32_cc_below_equal;
100 case ia32_cc_less: return ia32_cc_greater;
101 case ia32_cc_less_equal: return ia32_cc_greater_equal;
102 case ia32_cc_greater: return ia32_cc_less;
103 case ia32_cc_greater_equal: return ia32_cc_less_equal;
104 case ia32_cc_float_below: return ia32_cc_float_above;
105 case ia32_cc_float_below_equal: return ia32_cc_float_above_equal;
106 case ia32_cc_float_above: return ia32_cc_float_below;
107 case ia32_cc_float_above_equal: return ia32_cc_float_below_equal;
108 case ia32_cc_float_unordered_below: return ia32_cc_float_unordered_above;
109 case ia32_cc_float_unordered_below_equal: return ia32_cc_float_unordered_above_equal;
110 case ia32_cc_float_unordered_above: return ia32_cc_float_unordered_below;
111 case ia32_cc_float_unordered_above_equal: return ia32_cc_float_unordered_below_equal;
112 default: return code;
129 match_commutative = 1 << 0, /**< inputs are commutative */
130 match_am_and_immediates = 1 << 1, /**< node supports AM and immediate at
132 match_am = 1 << 2, /**< node supports (32bit) source AM */
133 match_8bit_am = 1 << 3, /**< node supports 8bit source AM */
134 match_16bit_am = 1 << 4, /**< node supports 16bit source AM */
135 match_immediate = 1 << 5, /**< node supports immediates */
136 match_mode_neutral = 1 << 6, /**< 16 and 8 bit modes can be emulated
137 by 32 bit operations */
138 match_try_am = 1 << 7, /**< only try to produce AM node, don't
139 do anything if AM isn't possible */
140 match_two_users = 1 << 8, /**< the instruction uses a load two times ... */
141 match_upconv_32 = 1 << 9 /**< 8/16 bit insn are processed by doing
142 an upconv to 32bit */
144 ENUM_BITSET(match_flags_t)
146 typedef struct ia32_op_attr_t ia32_op_attr_t;
147 struct ia32_op_attr_t {
154 IA32_ATTR_INVALID = 0,
155 IA32_ATTR_ia32_attr_t = 1 << 0,
156 IA32_ATTR_ia32_x87_attr_t = 1 << 1,
157 IA32_ATTR_ia32_asm_attr_t = 1 << 2,
158 IA32_ATTR_ia32_immediate_attr_t = 1 << 3,
159 IA32_ATTR_ia32_condcode_attr_t = 1 << 4,
160 IA32_ATTR_ia32_copyb_attr_t = 1 << 5,
161 IA32_ATTR_ia32_call_attr_t = 1 << 6,
162 IA32_ATTR_ia32_climbframe_attr_t = 1 << 7,
163 IA32_ATTR_ia32_switch_attr_t = 1 << 8,
168 * The generic ia32 attributes. Every node has them.
170 typedef struct ia32_attr_t ia32_attr_t;
172 except_attr exc; /**< the exception attribute. MUST be the first one. */
173 struct ia32_attr_data_bitfield {
174 unsigned tp:3; /**< ia32 node type. */
175 unsigned am_arity:2; /**< Indicates the address mode type supported by this node. */
176 unsigned am_scale:2; /**< The address mode scale for index register. */
177 unsigned am_sc_sign:1; /**< The sign bit of the address mode symconst. */
179 unsigned am_sc_no_pic_adjust : 1;/**< AM symconst can be relative to EIP */
180 unsigned am_tls_segment:1; /**< addresses are relative to TLS */
181 unsigned use_frame:1; /**< Indicates whether the operation uses the frame pointer or not. */
182 unsigned has_except_label:1; /**< Set if this node needs a label because of possible exception. */
184 unsigned is_commutative:1; /**< Indicates whether op is commutative or not. */
186 unsigned need_stackent:1; /**< Set to 1 if node need space on stack. */
187 unsigned need_64bit_stackent:1; /**< needs a 64bit stack entity (see double->unsigned int conv) */
188 unsigned need_32bit_stackent:1; /**< needs a 32bit stack entity */
189 unsigned ins_permuted : 1; /**< inputs of node have been permuted
190 (for commutative nodes) */
191 unsigned is_reload : 1; /**< node performs a reload */
192 unsigned is_spill : 1;
193 unsigned is_remat : 1;
196 int am_offs; /**< offsets for AddrMode */
197 ir_entity *am_sc; /**< SymConst for AddrMode */
199 ir_mode *ls_mode; /**< Load/Store mode: This is the mode of the
200 value that is manipulated by this node. */
202 ir_entity *frame_ent; /**< the frame entity attached to this node */
204 const be_execution_unit_t ***exec_units; /**< list of units this operation can be executed on */
206 ir_label_t exc_label; /**< the exception label iff this instruction can throw an exception */
209 const char *orig_node; /**< holds the name of the original ir node */
210 unsigned attr_type; /**< bitfield indicating the attribute type */
215 * The attributes for a Call node.
217 typedef struct ia32_call_attr_t ia32_call_attr_t;
218 struct ia32_call_attr_t {
219 ia32_attr_t attr; /**< generic attribute */
220 unsigned pop; /**< number of bytes that get popped by the callee */
221 ir_type *call_tp; /**< The call type, copied from the original Call node. */
225 * The attributes for nodes with condition code.
227 typedef struct ia32_condcode_attr_t ia32_condcode_attr_t;
228 struct ia32_condcode_attr_t {
229 ia32_attr_t attr; /**< generic attribute */
230 ia32_condition_code_t condition_code; /**< condition code*/
234 * The attributes for Switches
236 typedef struct ia32_switch_attr_t ia32_switch_attr_t;
237 struct ia32_switch_attr_t {
238 ia32_attr_t attr; /**< generic attribute */
243 * The attributes for CopyB code.
245 typedef struct ia32_copyb_attr_t ia32_copyb_attr_t;
246 struct ia32_copyb_attr_t {
247 ia32_attr_t attr; /**< generic attribute */
248 unsigned size; /**< size of copied block */
252 * The attributes for immediates.
254 typedef struct ia32_immediate_attr_t ia32_immediate_attr_t;
255 struct ia32_immediate_attr_t {
256 ia32_attr_t attr; /**< generic attribute */
257 ir_entity *symconst; /**< An entity if any. */
258 long offset; /**< An offset if any. */
259 unsigned sc_sign : 1; /**< The sign bit of the symconst. */
260 unsigned no_pic_adjust : 1; /**< constant can be relative to EIP */
264 * The attributes for x87 nodes.
266 typedef struct ia32_x87_attr_t ia32_x87_attr_t;
267 struct ia32_x87_attr_t {
268 ia32_attr_t attr; /**< the generic attribute */
269 const arch_register_t *x87[3]; /**< register slots for x87 register */
272 typedef struct ia32_asm_reg_t ia32_asm_reg_t;
273 struct ia32_asm_reg_t {
274 unsigned use_input : 1; /* use input or output pos */
277 unsigned dummy_fill : 13;
278 unsigned inout_pos : 16; /* in/out pos where the
279 register is assigned */
284 * The attributes for ASM nodes.
286 typedef struct ia32_asm_attr_t ia32_asm_attr_t;
287 struct ia32_asm_attr_t {
288 ia32_x87_attr_t x87_attr;
290 const ia32_asm_reg_t *register_map;
294 * The attributes for the ClimbFrame node.
296 typedef struct ia32_climbframe_attr_t ia32_climbframe_attr_t;
297 struct ia32_climbframe_attr_t {
298 ia32_attr_t attr; /**< generic attribute */
299 unsigned count; /**< number of frames to climb up */
302 /* the following union is necessary to indicate to the compiler that we might want to cast
303 * the structs (we use them to simulate OO-inheritance) */
304 union allow_casts_attr_t_ {
306 ia32_call_attr_t call_attr;
307 ia32_condcode_attr_t cc_attr;
308 ia32_copyb_attr_t cpy_attr;
309 ia32_x87_attr_t x87_attr;
310 ia32_asm_attr_t asm_attr;
311 ia32_immediate_attr_t immediate_attr;
312 ia32_climbframe_attr_t climbframe_attr;
313 ia32_switch_attr_t switch_attr;
317 #define CAST_IA32_ATTR(type,ptr) (assert( ((const ia32_attr_t*)(ptr))->attr_type & IA32_ATTR_ ## type ), (type*) (ptr))
318 #define CONST_CAST_IA32_ATTR(type,ptr) (assert( ((const ia32_attr_t*)(ptr))->attr_type & IA32_ATTR_ ## type ), (const type*) (ptr))
320 #define CAST_IA32_ATTR(type,ptr) ((type*) (ptr))
321 #define CONST_CAST_IA32_ATTR(type,ptr) ((const type*) (ptr))