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comparison lwasm/lwasm.h @ 346:a82c55070624

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Added expression parsing infrastructure and misc fixes
author lost@starbug
date Sat, 27 Mar 2010 19:04:03 -0600
parents 7416c3f9c321
children 1649bc7bda5a
comparison
equal deleted inserted replaced
345:7416c3f9c321 346:a82c55070624
24 24
25 #include <lw_expr.h> 25 #include <lw_expr.h>
26 #include <lw_stringlist.h> 26 #include <lw_stringlist.h>
27 #include <lw_stack.h> 27 #include <lw_stack.h>
28 28
29
30 // these are allowed chars BELOW 0x80 for symbols
31 // first is symbol start chars, second is anywhere in symbol
32 #define SSYMCHARS "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_@$"
33 #define SYMCHARS SSYMCHARS ".?0123456789"
34
35 typedef struct asmstate_s asmstate_t;
36
29 enum 37 enum
30 { 38 {
31 lwasm_expr_linelen = 1 39 lwasm_expr_linelen = 1, // length of ref'd line
40 lwasm_expr_lineaddr = 2, // addr of ref'd line
41 lwasm_expr_nextbp = 3, // next branch point
42 lwasm_expr_prevbp = 4 // previous branch point
32 }; 43 };
33 44
34 enum lwasm_output_e 45 enum lwasm_output_e
35 { 46 {
36 OUTPUT_DECB = 0, // DECB multirecord format 47 OUTPUT_DECB = 0, // DECB multirecord format
76 lw_expr_t addr; // assembly address of the line 87 lw_expr_t addr; // assembly address of the line
77 int len; // the "size" this line occupies (address space wise) (-1 if unknown) 88 int len; // the "size" this line occupies (address space wise) (-1 if unknown)
78 int insn; // number of insn in insn table 89 int insn; // number of insn in insn table
79 int symset; // set if the line symbol was consumed by the instruction 90 int symset; // set if the line symbol was consumed by the instruction
80 char *sym; // symbol, if any, on the line 91 char *sym; // symbol, if any, on the line
92 unsigned char *output; // output bytes
93 int outputl; // size of output
94 int outputbl; // size of output buffer
81 lwasm_error_t *err; // list of errors 95 lwasm_error_t *err; // list of errors
82 line_t *prev; // previous line 96 line_t *prev; // previous line
83 line_t *next; // next line 97 line_t *next; // next line
98 asmstate_t *as; // assembler state data ptr
84 }; 99 };
85 100
86 enum 101 enum
87 { 102 {
88 symbol_flag_set = 1, // symbol was used with "set" 103 symbol_flag_set = 1, // symbol was used with "set"
111 char **lines; // macro lines 126 char **lines; // macro lines
112 int numlines; // number lines in macro 127 int numlines; // number lines in macro
113 macrotab_t *next; // next macro in list 128 macrotab_t *next; // next macro in list
114 }; 129 };
115 130
116 typedef struct 131 struct asmstate_s
117 { 132 {
118 int output_format; // output format 133 int output_format; // output format
119 int target; // assembly target 134 int target; // assembly target
120 int debug_level; // level of debugging requested 135 int debug_level; // level of debugging requested
121 int flags; // assembly flags 136 int flags; // assembly flags
125 int skipcond; // skipping a condition? 140 int skipcond; // skipping a condition?
126 int skipmacro; // are we skipping in a macro? 141 int skipmacro; // are we skipping in a macro?
127 142
128 line_t *line_head; // start of lines list 143 line_t *line_head; // start of lines list
129 line_t *line_tail; // tail of lines list 144 line_t *line_tail; // tail of lines list
145
146 line_t *cl; // current line pointer
130 147
131 int context; // the current "context" 148 int context; // the current "context"
132 int nextcontext; // the next available context 149 int nextcontext; // the next available context
133 150
134 symtab_t symtab; // meta data for the symbol table 151 symtab_t symtab; // meta data for the symbol table
138 char *output_file; // output file name 155 char *output_file; // output file name
139 lw_stringlist_t input_files; // files to assemble 156 lw_stringlist_t input_files; // files to assemble
140 void *input_data; // opaque data used by the input system 157 void *input_data; // opaque data used by the input system
141 lw_stringlist_t include_list; // include paths 158 lw_stringlist_t include_list; // include paths
142 lw_stack_t file_dir; // stack of the "current file" dir 159 lw_stack_t file_dir; // stack of the "current file" dir
143 } asmstate_t; 160 };
144 161
145 #ifndef ___symbol_c_seen___ 162 #ifndef ___symbol_c_seen___
146 163
147 extern struct symtabe *register_symbol(asmstate_t *as, line_t *cl, char *sym, lw_expr_t value, int flags); 164 extern struct symtabe *register_symbol(asmstate_t *as, line_t *cl, char *sym, lw_expr_t value, int flags);
148 extern struct symtabe *lookup_symbol(asmstate_t *as, line_t *cl, char *sym, int context, int version); 165 extern struct symtabe *lookup_symbol(asmstate_t *as, line_t *cl, char *sym, int context, int version);
151 168
152 #ifndef ___lwasm_c_seen___ 169 #ifndef ___lwasm_c_seen___
153 170
154 extern void lwasm_register_error(asmstate_t *as, line_t *cl, const char *msg, ...); 171 extern void lwasm_register_error(asmstate_t *as, line_t *cl, const char *msg, ...);
155 extern int lwasm_next_context(asmstate_t *as); 172 extern int lwasm_next_context(asmstate_t *as);
173 extern void lwasm_emit(line_t *cl, int byte);
174 extern void lwasm_emitop(line_t *cl, int opc);
156 175
157 #endif 176 #endif
158 177
178 #define OPLEN(op) (((op)>0xFF)?2:1)
159 179
160 #endif /* ___lwasm_h_seen___ */ 180 #endif /* ___lwasm_h_seen___ */