Add argp, and executing functionality

.gitignore

@@ -57,6 +57,7 @@ dkms.conf
 *.eipa
 !test*.eipa
 *.eipaimg
+build/*
 
 #Code editor
 .vscode/*
@@ -67,4 +68,4 @@ compile_commands.json
 *.*~
 
 #Code analysis
-softwipe*.*
+softwipe*.*

Makefile

@@ -7,7 +7,7 @@ LIBS :=
 OBJECT_FILES := $(patsubst %.c, %.o, $(wildcard $(SRC_DIR)/*.c))
 HEADER_FILES := $(wildcard $(HEADER_DIR)/*.h)
 OBJECT_FILES := $(patsubst $(SRC_DIR)/%, $(BUILD_DIR)/%, $(OBJECT_FILES))
-MAIN_EXE_NAME := eipaemulator
+MAIN_EXE_NAME := eipaemu
 
 all build/eipaemulator: $(OBJECT_FILES)
 	$(CC) $(CFLAGS) $^ $(LIBS) -o $(BUILD_DIR)/$(MAIN_EXE_NAME)

header/argp_commons.h

@@ -0,0 +1,9 @@
+#ifndef _ARGP_COMMONS_H_
+#define _ARGP_COMMONS_H_
+
+#include "../header/common.h"
+
+#define ARGUMENT_DOC "INPUT_FILE"
+#define LONG_DOC "options:"
+
+#endif 

header/common.h

@@ -0,0 +1,41 @@
+/*
+This code is part of the EIPA Platform
+
+Here, common macros are specified
+*/
+
+#ifndef _COMMON_H_
+#define _COMMON_H_
+
+// Maximum Memory Adresses
+#define MAX_MEMORY 268435456
+
+// Intitial size and grow size for dynamic buffers
+#define TABLE_INIT_SIZE 50
+#define TABLE_GROW_SIZE 30
+
+#define VER_MAJOR "0"
+#define VER_MINOR "0"
+#define VER_PATCH "1"
+
+// alpha, beta or stable
+#define TAG "alpha"
+
+#define INSTR_INP 0b0001
+#define INSTR_OUT 0b0010
+#define INSTR_LDA 0b0011
+#define INSTR_STA 0b0100
+#define INSTR_INC 0b0101
+#define INSTR_DEC 0b0110
+#define INSTR_JPP 0b0111
+#define INSTR_JPZ 0b1000
+#define INSTR_JPN 0b1001
+#define INSTR_JPU 0b1010
+#define INSTR_EOJ 0b1011
+
+#define ADRESS_BITS 0b00001111111111111111111111111111
+
+// const char *argp_program_bug_address = "eipabugs@outlook.com";
+#define EIPA_BUG_ADRESS "eipabugs@outlook.com"
+
+#endif

header/execute.h

@@ -0,0 +1,13 @@
+#ifndef _EXECUTE_H_
+#define _EXECUTE_H_
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "common.h"
+
+// Executes given memory
+int execute(uint32_t *memory);
+
+#endif

header/helpers.h

@@ -0,0 +1,9 @@
+#ifndef _HELPER_H_
+#define _HELPER_H_
+
+#include <stdint.h>
+#include <stdio.h>
+
+void print_target_code(uint32_t *target_code);
+
+#endif

src/execute.c

@@ -0,0 +1,97 @@
+#include "../header/execute.h"
+
+int execute(uint32_t *memory)
+{
+    uint32_t instr_ptr = 0;
+    uint32_t instr_curr;
+    uint32_t cpu_register = 0;
+    while((instr_curr = memory[instr_ptr]) >> 28 != INSTR_EOJ)
+    {
+	uint8_t op_code = memory[instr_ptr] >> 28; // Get only the first 4 bits
+	uint32_t adress = memory[instr_ptr] & ADRESS_BITS; // Discard the first 4 bits
+
+	// This check should be unnecessary when using the official EIPA Assembler, but
+	// some people might want to hand-craft their EIPA Images
+	if(adress > MAX_MEMORY)
+	{
+	    printf("ERROR: Adress on instruction %u is too big\n", instr_ptr);
+	    return 1;
+	}
+
+	// Run the instruction
+	switch(op_code)
+	{
+	case INSTR_INP:
+	{
+	    printf("Input: ");
+	    int check = scanf("%u", memory + adress);
+	    fflush(stdin);
+	    if(!check)
+	    {
+		printf("ERROR: Received invalid input on a INP instruction\n");
+		return 1;
+	    }
+	    instr_ptr++;
+	    break;
+	}
+	case INSTR_OUT:
+	    printf("%u\n", memory[adress]);
+	    instr_ptr++;
+	    break;
+	case INSTR_LDA:
+	    cpu_register = memory[adress];
+	    instr_ptr++;
+	    break;
+	case INSTR_STA:
+	    memory[adress] = cpu_register;
+	    instr_ptr++;
+	    break;
+	case INSTR_INC:
+	    cpu_register++;
+	    instr_ptr++;
+	    break;
+	case INSTR_DEC:
+	    cpu_register--;
+	    instr_ptr++;
+	    break;
+	case INSTR_JPP:
+	    if(cpu_register > 0)
+	    {
+		instr_ptr = adress;
+	    }
+	    else
+	    {
+		instr_ptr++;
+	    }
+	    break;
+	case INSTR_JPZ:
+	    if(cpu_register == 0)
+	    {
+		instr_ptr = adress;
+	    }
+	    else
+	    {
+		instr_ptr++;
+	    }
+	    break;
+	case INSTR_JPN:
+	    if(cpu_register < 0)
+	    {
+		instr_ptr = adress;
+	    }
+	    else
+	    {
+		instr_ptr++;
+	    }
+	    break;
+	case INSTR_JPU:
+	    instr_ptr = adress;
+	    break;
+	default:
+	    printf("ERROR: Unknown opcode %u\n", op_code);
+	}
+	
+    }
+
+    return 0;
+}

src/helpers.c

@@ -0,0 +1,16 @@
+#include "../header/helpers.h"
+
+void print_target_code(uint32_t *target_code)
+{
+    int instruction_index = 0;
+    while (target_code[instruction_index] != 0)
+    {
+        int i = 0;
+        for (i = (sizeof(target_code[instruction_index]) * 8) - 1; i >= 0; i--)
+        {
+            putchar(target_code[instruction_index] & (1u << i) ? '1' : '0');
+        }
+        printf("\n");
+        instruction_index++;
+    }
+}

src/main.c

@@ -2,40 +2,95 @@
 
 // Read an EIPA image and print it out in Binary form
 
+#ifndef WIN_COMPILE
+#include <argp.h>
+#else
+#include "../header/argp/argp.h"
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 
-#define MAX_MEMORY 268435456
+#include "../header/argp_commons.h"
+#include "../header/common.h"
+#include "../header/helpers.h"
+#include "../header/execute.h"
 
-void print_target_code(__uint32_t *target_code)
+const char *argp_program_version =
+    VER_MAJOR "." VER_MINOR "." VER_PATCH " || " TAG;
+
+const char *argp_program_bug_address = EIPA_BUG_ADRESS;
+
+// Here, the argumets get stored by the parser, so acess them from here
+struct cmd_arguments
 {
-    int instruction_index = 0;
-    while (target_code[instruction_index] != 0)
+    char *input_file;
+};
+
+// Parses the command line options & arguments
+static error_t parser_function(int key, char *arg, struct argp_state *state)
+{
+    struct cmd_arguments *save_arguments = state->input;
+
+    switch (key)
     {
-        int i = 0;
-        for (i = (sizeof(target_code[instruction_index]) * 8) - 1; i >= 0; i--)
+    case ARGP_KEY_ARG:
+        // If we got more than one non-option argument
+        if (state->arg_num >= 1)
         {
-            putchar(target_code[instruction_index] & (1u << i) ? '1' : '0');
+            argp_usage(state);
         }
-        printf("\n");
-        instruction_index++;
+        save_arguments->input_file = arg;
+        break;
+    case ARGP_KEY_END:
+        // If we didn't receive 1 Argument yet
+        if (state->arg_num < 1)
+        {
+            argp_usage(state);
+        }
+        break;
+    default:
+        return ARGP_ERR_UNKNOWN;
     }
-}
-
-int main(int argc, char const *argv[])
-{
-    if(argc < 2)
-    {
-        printf("Specify input file\n");
-    }
-    FILE *input = fopen(argv[1], "r");
-    if(input == NULL) return -1;
-
-    __uint32_t *target_code = malloc(MAX_MEMORY*sizeof(target_code));
-
-    fread(target_code, sizeof(target_code), MAX_MEMORY, input);
-
-    print_target_code(target_code);
-
+    return 0;
+}
+
+// This array stores structs containing information about the cli options
+static struct argp_option argp_options[] = {{0}};
+
+// Contains the neccesary stuff for argp
+static struct argp argument_parser =
+    {
+        .options = argp_options,
+        .parser = parser_function,
+        .args_doc = ARGUMENT_DOC,
+        .doc = LONG_DOC};
+
+int main(int argc, char **argv)
+{
+    // Parse CLI Arguments
+    // set defaults
+    struct cmd_arguments arguments;
+    arguments.input_file = "";
+
+    if (argp_parse(&argument_parser, argc, argv, 0, 0, &arguments) != 0)
+    {
+        printf("Error: Failed to parse CLI Arguments - Error code\n");
+        return EXIT_FAILURE;
+    }
+
+    FILE *input = fopen(arguments.input_file, "r");
+    if (input == NULL)
+        return -1;
+
+    // Allocate the memory of the Emulated device
+    uint32_t *memory = malloc(MAX_MEMORY * sizeof(memory));
+
+    // Load the binary into memory
+    fread(memory, sizeof(memory), MAX_MEMORY, input);
+
+    execute(memory);
+
+    free(memory);
     return 0;
 }