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1 | /* GX generic simulator structs. |
2 | Copyright (C) 1998 Cygnus Solutions. | |
3 | */ | |
4 | ||
5 | #ifndef SIM_GX_H | |
6 | #define SIM_GX_H | |
7 | ||
8 | #include <stdio.h> | |
9 | #include "sim-base.h" | |
10 | #include "sim-core.h" | |
11 | ||
12 | ||
13 | /* | |
14 | #ifndef SIM_GX | |
15 | #error "Compile this file only if configured SIM_GX" | |
16 | #endif | |
17 | */ | |
18 | ||
19 | ||
20 | /* configuration */ | |
21 | ||
22 | #define GX_DIR ".gx" | |
23 | #define GX_VERSION 1 | |
24 | ||
25 | ||
26 | struct sim_gx_compiled_block; | |
27 | ||
28 | ||
29 | /* record for a particular GX block */ | |
30 | typedef struct sim_gx_block | |
31 | { | |
32 | /* ---- BLOCK EXTENT ---- */ | |
33 | address_word origin; /* first code-segment address translated */ | |
34 | unsigned_4 length; /* length of translated code-segment */ | |
35 | ||
36 | #define GX_PC_INCLUDES(gx,pc) ((gx)->origin <= (pc) && (pc) < (gx)->origin + (gx)->length) | |
37 | ||
38 | short divisor; /* minimum instruction word size; address_word -> index divisor */ | |
39 | char* pc_flags; /* see GX_PC_* below */ | |
40 | ||
41 | #define GX_PCF_INSTRUCTION 0x01 /* learned */ | |
42 | #define GX_PCF_JUMPTARGET 0x02 /* learned */ | |
43 | #define GX_PCF_COND_HALT 0x10 /* translate-time input */ | |
44 | #define GX_PCF_HALT 0x20 /* run-time input */ | |
45 | #define GX_PC_FLAGS_INDEX(gx,pc) ((((pc) - ((gx)->origin)) / (gx)->divisor)) | |
46 | #define GX_PC_FLAGS(gx,pc) ((gx)->pc_flags[GX_PC_FLAGS_INDEX((gx),(pc))]) | |
47 | ||
48 | /* GX callbacks */ | |
49 | struct tgx_callbacks* callbacks; | |
50 | ||
51 | /* compilation statistics */ | |
52 | unsigned_4 compile_time; /* time to compile [s] */ | |
53 | ||
54 | /* ---- LEARNING MODE STATE ---- */ | |
55 | unsigned_4 learn_last_change; /* time of last flag change */ | |
56 | struct sim_gx_compiled_block* learning_block; | |
57 | ||
58 | /* ---- OPTIMIZED MODE STATE ---- */ | |
59 | unsigned opt_compile_count; /* number of optimized compile attempts */ | |
60 | struct sim_gx_compiled_block* optimized_block; | |
61 | } sim_gx_block; | |
62 | ||
63 | ||
64 | ||
65 | ||
66 | typedef struct sim_gx_compiled_block | |
67 | { | |
68 | /* ---- TRANSLATION OBJECTS ---- */ | |
69 | char* source_name; /* source file for translated object */ | |
70 | char* object_name; /* file name of translated object */ | |
71 | char* symbol_name; /* symbol name of function */ | |
72 | /* (all above pointers are zalloc()'d buffers, to be zfree()'d. */ | |
73 | ||
74 | FILE* source_file; /* working file pointer during translation */ | |
75 | ||
76 | /* ---- LOADED TRANSLATIONS ---- */ | |
77 | void* object_dlhandle; /* dlopen() handle to loaded object (if open) */ | |
78 | void* function_dlhandle; /* dlsym() pointer to function (if found) */ | |
79 | } sim_gx_compiled_block; | |
80 | ||
81 | ||
82 | ||
83 | /* GX block vector: for quick search of translated blocks */ | |
84 | typedef struct sim_gx_block_list | |
85 | { | |
86 | /* ---- BLOCK VECTOR ---- */ | |
87 | sim_gx_block** gx_blocks; /* vector of GX blocks, sorted by origin field */ | |
88 | unsigned gx_blocks_size; /* vector length */ | |
89 | unsigned gx_blocks_used; /* number of elements used in vector */ | |
90 | address_word gx_first, gx_last; /* first & last addresses translated by any gx block */ | |
91 | } sim_gx_block_list; | |
92 | ||
93 | ||
94 | /* actual gx function pointer type */ | |
3d7075f5 FCE |
95 | struct tgx_info; |
96 | typedef int (*sim_gx_function)(struct tgx_info* info); | |
92fa4579 FCE |
97 | |
98 | ||
99 | /* return values from gx function */ | |
100 | #define GX_F_HALT 0 | |
101 | #define GX_F_NONPC 1 | |
102 | #define GX_F_RANGE 2 | |
103 | #define GX_F_YIELD 3 | |
104 | ||
105 | ||
106 | /* Limit on loop cycles within a learning mode gx block */ | |
107 | #define GX_LEARN_RUN_LIMIT 10000 | |
108 | ||
109 | /* Operations */ | |
110 | sim_gx_block* sim_gx_block_create(sim_cia cia); | |
111 | ||
112 | sim_gx_block* sim_gx_block_find(sim_cia cia); | |
113 | void sim_gx_block_add(sim_gx_block* block); | |
114 | void sim_gx_block_remove(sim_gx_block* block); | |
115 | ||
116 | /* State save/restore */ | |
117 | void sim_gx_write_block_list(); | |
118 | void sim_gx_read_block_list(); | |
119 | ||
120 | sim_gx_function sim_gx_compiled_block_f(sim_gx_compiled_block* gx); | |
121 | void sim_gx_compiled_block_dispose(sim_gx_compiled_block* gx); | |
122 | void sim_gx_block_translate(sim_gx_block* gx, int optimized); | |
123 | ||
124 | ||
125 | ||
126 | /* Target-specific translation operations */ | |
127 | ||
128 | int tgx_optimize_test(sim_gx_block* block); | |
129 | ||
130 | void tgx_block_ctor(sim_gx_block* block, sim_cia cia); | |
131 | void tgx_block_ctor2(sim_gx_block* block, unsigned_4 origin, | |
132 | unsigned_4 length, unsigned_4 divisor); | |
133 | void tgx_block_dtor(sim_gx_block* block); | |
134 | ||
135 | void tgx_emit_pre_function(sim_gx_block* block, int optimized); | |
136 | void tgx_emit_load_block(sim_gx_block* block, int optimized); | |
137 | sim_cia tgx_emit_insn(sim_gx_block* block, sim_cia cia, int optimized); | |
138 | void tgx_emit_save_block(sim_gx_block* block, int optimized); | |
139 | void tgx_emit_post_function(sim_gx_block* block, int optimized); | |
140 | ||
141 | ||
142 | #endif /* SIM_GX_H */ |