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comparison src/lwasm.h @ 75:92eb93bffa28

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Rejigged symbol system to be able to handle non-constant references
author lost
date Thu, 08 Jan 2009 01:32:49 +0000
parents c8c772ef5df9
children 2fe5fd7d65a3
comparison
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74:c8c772ef5df9 75:92eb93bffa28
83 83
84 // the following are used for obj format - for external references, inter-section 84 // the following are used for obj format - for external references, inter-section
85 // references, and intrasection relocations 85 // references, and intrasection relocations
86 int relocoff; // offset into insn where relocation value goes 86 int relocoff; // offset into insn where relocation value goes
87 // the incomplete reference expression 87 // the incomplete reference expression
88 struct lwasm_expr_strack_t *expr; 88 lwasm_expr_stack_t *expr;
89 }; 89 };
90 90
91 // for keeping track of symbols 91 // for keeping track of symbols
92 #define SYMBOL_SET 1 // the symbol was used for "SET" 92 #define SYMBOL_SET 1 // the symbol was used for "SET"
93 #define SYMBOL_NORM 0 // no flags 93 #define SYMBOL_COMPLEX 2 // register symbol as a complex symbol (from l -> expr)
94 #define SYMBOL_NORM 0 // no flags
94 typedef struct lwasm_symbol_ent_s lwasm_symbol_ent_t; 95 typedef struct lwasm_symbol_ent_s lwasm_symbol_ent_t;
95 struct lwasm_symbol_ent_s 96 struct lwasm_symbol_ent_s
96 { 97 {
97 char *sym; // the symbol 98 char *sym; // the symbol
98 int context; // the context number of the symbol (-1 for global) 99 int context; // the context number of the symbol (-1 for global)
99 int value; // the value of the symbol 100 int value; // the value of the symbol
100 int flags; // flags for the symbol 101 int flags; // flags for the symbol
102 sectiontab_t *sect; // the section the symbol exists in; NULL for none
103 lwasm_expr_stack_t *expr; // expression for a symbol that is not constant NULL for const
101 lwasm_symbol_ent_t *next; // next symbol in the table 104 lwasm_symbol_ent_t *next; // next symbol in the table
102 lwasm_symbol_ent_t *prev; // previous symbol in the table 105 lwasm_symbol_ent_t *prev; // previous symbol in the table
103 }; 106 };
104 107
105 // keep track of current assembler state 108 // keep track of current assembler state