84 lines
1.2 KiB
C
84 lines
1.2 KiB
C
#ifndef CPU_HEADER
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#include "simdata.h"
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struct fetch_data_t{
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};
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struct decode_data_t{
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uint32_t in_bytecode;
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uint32_t address; // used only for the gui hints (for now)
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};
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///// EXEC DATA STRUCTURES ///////
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enum EXEC_ACTION_t {
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EXEC_ALU,
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MOVE,
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JUMP,
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NOP,
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HALT
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};
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enum ALU_OP_t {
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ALU_ADD,
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ALU_SUB,
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ALU_SL,
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ALU_SR,
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ALU_CMP
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};
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enum OP_ADDR_t {
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IMMEDIATE,
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REGISTER,
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REGISTERL, //low word
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REGISTERH, //high word
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};
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struct exec_op_t {
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enum OP_ADDR_t OP_ADDR;
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uint32_t data;
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};
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enum COND_t{
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NONE,
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ZERO,
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NZERO,
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CARRY,
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NCARRY
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};
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struct exec_data_t {
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enum EXEC_ACTION_t EXEC_ACTION;
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enum ALU_OP_t ALU_OP;
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enum COND_t COND;
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struct exec_op_t *in_op1;
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struct exec_op_t *in_op2;
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struct exec_op_t *out_op;
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uint32_t address; // used only for the gui hints (for now)
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};
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void cpu_simdata_free(struct simdata_t *simdata);
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int cpu_simdata_malloc(struct simdata_t *simdata);
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int cpu_cycle_clock(struct simdata_t *simdata);
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// +===================+
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// | BIT | USAGE |
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// |-----+-------------|
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// | 0 | ZERO |
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// |-----+-------------|
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// | 1 | CARRY |
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// |-----+-------------|
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// | 2 | SIGN |
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//
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struct registers_t{
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uint32_t GPR[8];
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uint32_t FLAGS;
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};
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#endif
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#define CPU_HEADER
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