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 declarations for SPARC backend -- private header
23 * @author Hannes Rapp, Matthias Braun
25 #ifndef FIRM_BE_SPARC_BEARCH_SPARC_T_H
26 #define FIRM_BE_SPARC_BEARCH_SPARC_T_H
29 #include "sparc_nodes_attr.h"
32 typedef struct sparc_isa_t sparc_isa_t;
33 typedef struct calling_convention_t calling_convention_t;
35 /** Floating point instruction set. */
36 enum sparc_fp_architectures {
37 SPARC_FPU_ARCH_NONE = 0,
38 SPARC_FPU_ARCH_FPU = 0x00000001,
39 SPARC_FPU_ARCH_SOFTFLOAT = 0x00000002,
43 arch_env_t base; /**< must be derived from arch_env_t */
45 int fpu_arch; /**< FPU architecture */
48 extern const arch_irn_ops_t sparc_irn_ops;
51 * SPARC ABI requires some space which is always available at the top of
52 * the stack. It contains:
53 * 16*4 bytes space for spilling the register window
54 * 1*4 byte holding a pointer to space for aggregate returns (the space is
55 * always reserved, regardless whether we have an aggregate return
57 * 6*4 bytes Space for spilling parameters 0-5. For the cases when someone
58 * takes the address of a parameter. I guess this is also there so
59 * the implementation of va_args gets easier -> We can simply store
60 * param 0-5 in this spaces and then handle va_next by simply
61 * incrementing the stack pointer
63 #define SPARC_IMMEDIATE_MIN -4096
64 #define SPARC_IMMEDIATE_MAX 4095
65 #define SPARC_MIN_STACKSIZE 92
66 #define SPARC_AGGREGATE_RETURN_OFFSET 64
67 #define SPARC_PARAMS_SPILL_OFFSET 68
68 #define SPARC_SAVE_AREA_SIZE 64
69 #define SPARC_N_PARAM_REGS 6
70 #define SPARC_STACK_ALIGNMENT 8
71 #define SPARC_REGISTER_SIZE 4
73 static inline bool sparc_is_value_imm_encodeable(int32_t value)
75 return SPARC_IMMEDIATE_MIN <= value && value <= SPARC_IMMEDIATE_MAX;
78 void sparc_finish_graph(ir_graph *irg);
80 void sparc_introduce_prolog_epilog(ir_graph *irg);
82 void sparc_lower_64bit(void);
84 bool sparc_variadic_fixups(ir_graph *irg, calling_convention_t *cconv);
85 void sparc_create_stacklayout(ir_graph *irg, calling_convention_t *cconv);
86 void sparc_adjust_stack_entity_offsets(ir_graph *irg);
87 void sparc_fix_stack_bias(ir_graph *irg);