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 declarations for arm node attributes
23 * @author Oliver Richter, Tobias Gneist
26 #ifndef FIRM_BE_ARM_ARM_NODES_ATTR_H
27 #define FIRM_BE_ARM_ARM_NODES_ATTR_H
29 #include "../bearch_t.h"
30 #include "firm_types.h"
33 * Possible ARM register shift types.
35 typedef enum _arm_shift_modifier {
36 ARM_SHF_NONE = 0, /**< no shift */
37 ARM_SHF_IMM = 1, /**< immediate operand with implicit ROR */
38 ARM_SHF_ASR = 2, /**< arithmetic shift right */
39 ARM_SHF_LSL = 3, /**< logical shift left */
40 ARM_SHF_LSR = 4, /**< logical shift right */
41 ARM_SHF_ROR = 5, /**< rotate right */
42 ARM_SHF_RRX = 6, /**< rotate with sign extend */
45 /** True, if the modifier implies a shift argument */
46 #define ARM_HAS_SHIFT(mod) ((mod) > ARM_SHF_IMM)
48 /** get the shift modifier from flags */
49 #define ARM_GET_SHF_MOD(attr) ((attr)->instr_fl & 7)
51 /** set the shift modifier to flags */
52 #define ARM_SET_SHF_MOD(attr, mod) ((attr)->instr_fl = (((attr)->instr_fl & ~7) | (mod)))
56 * Possible ARM condition codes.
58 typedef enum _arm_condition {
59 ARM_COND_EQ = 0, /**< Equal, Z set. */
60 ARM_COND_NE = 1, /**< Not Equal, Z clear */
61 ARM_COND_CS = 2, /**< Carry set, unsigned >=, C set */
62 ARM_COND_CC = 3, /**< Carry clear, unsigned <, C clear */
63 ARM_COND_MI = 4, /**< Minus/Negativ, N set */
64 ARM_COND_PL = 5, /**< Plus/Positiv or Zero, N clear */
65 ARM_COND_VS = 6, /**< Overflow, V set */
66 ARM_COND_VC = 7, /**< No overflow, V clear */
67 ARM_COND_HI = 8, /**< unsigned >, C set and Z clear */
68 ARM_COND_LS = 9, /**< unsigned <=, C clear or Z set */
69 ARM_COND_GE = 10, /**< signed >=, N == V */
70 ARM_COND_LT = 11, /**< signed <, N != V */
71 ARM_COND_GT = 12, /**< signed >, Z clear and N == V */
72 ARM_COND_LE = 13, /**< signed <=, Z set or N != V */
73 ARM_COND_AL = 14, /**< Always (unconditional) */
74 ARM_COND_NV = 15 /**< forbidden */
77 /** Get the condition code from flags */
78 #define ARM_GET_COND(attr) (((attr)->instr_fl >> 3) & 15)
80 /** Set the condition code to flags */
81 #define ARM_SET_COND(attr, code) ((attr)->instr_fl = (((attr)->instr_fl & ~(15 << 3)) | ((code) << 3)))
83 /** Generic ARM node attributes. */
84 typedef struct _arm_attr_t {
85 arch_irn_flags_t flags; /**< indicating if spillable, rematerializeable ... etc. */
87 const arch_register_req_t **in_req; /**< register requirements for arguments */
88 const arch_register_req_t **out_req; /**< register requirements for results */
90 ir_mode *op_mode; /**< operation mode if different from node's mode */
91 unsigned instr_fl; /**< condition code, shift modifier */
92 tarval *value; /**< immediate */
94 const arch_register_t **slots; /**< register slots for assigned registers */
97 /** Attributes for a SymConst */
98 typedef struct _arm_SymConst_attr_t {
100 ident *symconst_id; /**< for SymConsts: its ident */
101 } arm_SymConst_attr_t;
103 /** Attributes for a CondJmp */
104 typedef struct _arm_CondJmp_attr_t {
107 } arm_CondJmp_attr_t;
109 /** Attributes for a SwitchJmp */
110 typedef struct _arm_SwitchJmp_attr_t {
113 long default_proj_num;
114 } arm_SwitchJmp_attr_t;
117 * Returns the shift modifier string.
119 const char *arm_shf_mod_name(arm_shift_modifier mod);