Two-pass-assembler/setting.c at master · omer-lebel/Two-pass-assembler · GitHub

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#include "setting.h"

/* =========================================================================
 *                           global vars assignment
 * ========================================================================= */
/**
 * all the reserved words of the assembly language
 * */
char *reserved_words[] = {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
                          ".data", ".string", ".entry", ".extern", ".define",
                          "mov", "cmp", "add", "sub", "lea",
                          "not", "clr", "inc", "dec", "jmp", "bne", "red", "prn",
                          "jsr", "rts", "hlt",
                          "mcr", "endmcr", ""};

/**
 * Operation names array
 *
 * @note each operation name is stored at the index corresponding to its
 * opcode.
 */
char *operation_names[NUM_OF_OP] = {"mov", "cmp", "add", "sub", "not", "clr",
                                    "lea", "inc", "dec", "jmp", "bne", "red",
                                    "prn", "jsr", "rts", "hlt"};

/**
 * @brief Table defining the addressing modes for each operation.
 *
 * Defines the addressing modes supported by each assembler operation.
 * Each row corresponds to an operation, with columns indicating
 * supported addressing modes for source and target operands.
 *
 */
unsigned int addr_mode_table[NUM_OF_OP][3] =
    {{MOV,    all_mode,       symbol_n_index_n_reg}, /* | 1111 | 0111 | */
     {CMP,    all_mode,       all_mode},             /* | 1111 | 1111 | */
     {ADD,    all_mode,       symbol_n_index_n_reg}, /* | 1111 | 0111 | */
     {SUB,    all_mode,       symbol_n_index_n_reg}, /* | 1111 | 0111 | */
     {NOT,    no_operand,     symbol_n_index_n_reg}, /* |   -  | 0111 | */
     {CLR,    no_operand,     symbol_n_index_n_reg}, /* |   -  | 0111 | */
     {LEA,    symbol_n_index, symbol_n_index_n_reg}, /* | 0110 | 0111 | */
     {INC,    no_operand,     symbol_n_index_n_reg}, /* |   -  | 0111 | */
     {DEC,    no_operand,     symbol_n_index_n_reg}, /* |   -  | 0111 | */
     {JMP,    no_operand,     symbol_n_reg},         /* |   -  | 0101 | */
     {BNE,    no_operand,     symbol_n_reg},         /* |   -  | 0101 | */
     {RED,    no_operand,     symbol_n_index_n_reg}, /* |   -  | 0111 | */
     {PRN,    no_operand,     all_mode},             /* |   -  | 1111 | */
     {JSR,    no_operand,     symbol_n_reg},         /* |   -  | 0101 | */
     {INC,    no_operand,     no_operand},           /* |   -  |   -  | */
     {INC,    no_operand,     no_operand}};          /* |   -  |   -  | */

/*  --------------------------------------------------------------------
* |      operator      |      scr operand      |    target operand     |
* |--------------------|-----------------------|-----------------------|
* |   addressing mode  | imm | sym | ind | reg | imm | sym | ind | reg |
* |--------------------|-----+-----+-----+-----|-----+-----+-----+-----|
* |    mov, add, sub   |  X  |  X  |  X  |  X  |     |  X  |  X  |  X  |
* |--------------------|-----+-----+-----+-----|-----+-----+-----+-----|
* |        cmp         |  X  |  X  |  X  |  X  |  X  |  X  |  X  |  X  |
* |--------------------|-----+-----+-----+-----|-----+-----+-----+-----|
* |        lea         |     |  X  |  X  |     |     |  X  |  X  |  X  |
* |--------------------|-----+-----+-----+-----|-----+-----+-----+-----|
* | not, clr, inc, dec |                       |     |  X  |  X  |  X  |
* |--------------------|-----+-----+-----+-----|-----+-----+-----+-----|
* |    jmp, bne, jsr   |                       |     |  X  |     |  X  |
* |--------------------|-----+-----+-----+-----|-----+-----+-----+-----|
* |        red         |                       |     |  X  |  X  |  X  |
* |--------------------|-----+-----+-----+-----|-----+-----+-----+-----|
* |        prn         |                       |  X  |  X  |  X  |  X  |
* |--------------------|-----+-----+-----+-----|-----+-----+-----+-----|
* |     rts, hlt       |                       |                       |
* ----------------------------------------------------------------------
* */