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 Generic backend types and interfaces.
23 * @author Sebastian Hack
26 #ifndef FIRM_BE_MAIN_H
27 #define FIRM_BE_MAIN_H
32 #include "iroptimize.h"
36 ASM_CONSTRAINT_FLAG_SUPPORTS_REGISTER = 0x0001,
37 ASM_CONSTRAINT_FLAG_SUPPORTS_MEMOP = 0x0002,
38 ASM_CONSTRAINT_FLAG_SUPPORTS_IMMEDIATE = 0x0004,
39 ASM_CONSTRAINT_FLAG_NO_SUPPORT = 0x0008,
40 ASM_CONSTRAINT_FLAG_MODIFIER_WRITE = 0x0010,
41 ASM_CONSTRAINT_FLAG_MODIFIER_NO_WRITE = 0x0020,
42 ASM_CONSTRAINT_FLAG_MODIFIER_READ = 0x0040,
43 ASM_CONSTRAINT_FLAG_MODIFIER_NO_READ = 0x0080,
44 ASM_CONSTRAINT_FLAG_MODIFIER_EARLYCLOBBER = 0x0100,
45 ASM_CONSTRAINT_FLAG_MODIFIER_COMMUTATIVE = 0x0200,
46 ASM_CONSTRAINT_FLAG_INVALID = 0x8000
47 } asm_constraint_flags_t;
50 * Build a Trampoline for the closure.
51 * @param block the block where to build the trampoline
53 * @param trampoline address of a trampoline region
54 * @param env address of the environment
55 * @param callee address of the function to call
57 * @return modified memory
59 typedef ir_node *(create_trampoline_fkt)(ir_node *block, ir_node *mem, ir_node *trampoline, ir_node *env, ir_node *callee);
62 * This structure contains parameters that should be
63 * propagated to the libFirm parameter set.
65 typedef struct backend_params {
66 /** If set, the backend cannot handle DWORD access. */
67 unsigned do_dw_lowering:1;
68 /** If set, the backend supports inline assembly. */
69 unsigned support_inline_asm:1;
71 /** Settings for architecture dependent optimizations. */
72 const ir_settings_arch_dep_t *dep_param;
74 /** The architecture specific intrinsic function creator. */
75 create_intrinsic_fkt *arch_create_intrinsic_fkt;
77 /** The context parameter for the create intrinsic function. */
78 void *create_intrinsic_ctx;
80 /** Backend settings for if-conversion. */
81 arch_allow_ifconv_func allow_ifconv;
84 * some backends like x87 can only do arithmetic in a specific float
85 * mode (but convert to/from other float modes).
87 ir_mode *mode_float_arithmetic;
89 /** Size of the trampoline code. */
90 unsigned trampoline_size;
92 /** Alignment of the trampoline code. */
93 unsigned trampoline_align;
95 /** If non-zero, build the trampoline. */
96 create_trampoline_fkt *build_trampoline;
98 /** Alignment of stack parameters */
99 unsigned stack_param_align;
103 * Register the Firm backend command line options.
105 FIRM_API void be_opt_register(void);
108 * Parse one backend argument.
110 FIRM_API int be_parse_arg(const char *arg);
113 * Return the backend configuration parameter.
115 * @return libFirm configuration parameters for the selected
118 FIRM_API const backend_params *be_get_backend_param(void);
121 * Main interface to the frontend.
123 FIRM_API void be_main(FILE *output, const char *compilation_unit_name);
126 * parse assembler constraint strings and returns flags (so the frontend knows
127 * which operands are inputs/outputs and whether memory is required)
129 FIRM_API asm_constraint_flags_t be_parse_asm_constraints(const char *constraints);
132 * tests whether a string is a valid clobber in an ASM instruction
134 FIRM_API int be_is_valid_clobber(const char *clobber);
136 typedef struct be_main_env_t be_main_env_t;
137 typedef struct be_options_t be_options_t;