toy
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emulator
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remove trailing whitespace

This commit is contained in:
lux 2017-09-27 16:25:58 +02:00
parent b6a88963e5
commit 6b5c6ecceb
3 changed files with 18 additions and 18 deletions
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10
src/main.c
View File

@ -7,7 +7,7 @@
#include <assert.h>
#ifndef NDEBUG
#define DEBUG
#define DEBUG
#endif
@ -24,9 +24,9 @@ int main(int argc, char *argv[])
printf("\n+++++++++++++++++++++++++++++++++++++++++++++++\n+Boot: "CPU_TYPE
" with %zu x %zu Bit RAM.+\n+++++++++++++++++++++++++++++++++++++++++++++++\n\n"
,(sizeof(ram)/sizeof(ram[0])),sizeof(ram[0])*8);
if(initialise_ram(ram,argc,argv)==-1) return 1; //load data from command line into RAM
//(-1 in case of error,
//(-1 in case of error,
//else number of correct read worts)
while(run)
@ -43,9 +43,9 @@ int main(int argc, char *argv[])
printf("\ninstruction result:\n");
//CPU control flow
if(execute(op_code,data_addr,ram)) //EXECUTE instruction, jump if ALU says
if(execute(op_code,data_addr,ram)) //EXECUTE instruction, jump if ALU says
pc=get_data(ir);
else pc++;
else pc++;
if(pc>=RAM_SIZE) pc %= RAM_SIZE; //TOY_CPU can only address 12 Bit

12
src/toy.c
View File

@ -47,13 +47,13 @@ int initialise_ram(uint16_t *ram, int argc, char **argv )
//open and check the input stream
FILE *fp;
int j=0,int_cache=0;
char tempS[CPU_WORD_SIZE+1]; //+1 for "\0"
char tempS[CPU_WORD_SIZE+1]; //+1 for "\0
for(int i=0;i<RAM_SIZE;i++) ram[i]=0; //initialize the toy-RAM with NULL
if(argc<2)
if(argc<2)
{
fprintf(stderr,"%s","no \".toy\" input file!\n"
fprintf(stderr,"%s","no \".toy\" input file!\n"
"interpretation terminated. (press -h for help)\n");
return -1;
}
@ -76,13 +76,13 @@ int initialise_ram(uint16_t *ram, int argc, char **argv )
}
// Fill the toy-RAM with data and break in case of error
for(;;)
for(;;)
{
for(int i = 0;i <= CPU_WORD_SIZE;i++)
{
int_cache = fgetc(fp);
if((int_cache =='\n' && i<CPU_WORD_SIZE) || (feof(fp) && i!=0))
if((int_cache =='\n' && i<CPU_WORD_SIZE) || (feof(fp) && i!=0))
{
fprintf(stderr,"%s","input file has incorrect machine-word size !\n");
fclose(fp);
@ -129,7 +129,7 @@ int get2compl(uint16_t value)
{
value=(~value)+1;
sign_value = value*(-1);
}
}
return sign_value;
}

14
src/toy.h
View File

@ -2,27 +2,27 @@
#define TOY_H
#define CPU_TYPE "Koopman_TOY_CPU"
#define RAM_SIZE 4096
#define RAM_SIZE 4096
#define CPU_WORD_SIZE 16
/**
* print_instructionSet(): print the cpu instruction set
* This is a user help function, can be activated via
* This is a user help function, can be activated via
* the -h paramter.
* Return: none
* Return: none
*/
void print_instructionSet(void);
/**
* initialise_ram(): read inputstream into the toy-ram
* Return:
* the number of successfully read machine words,
* Return:
* the number of successfully read machine words,
* -1 in case of error
*/
*/
int initialise_ram(uint16_t *ram, int argc, char **argv );
int initialise_ram(uint16_t *ram, int argc, char **argv );
/**
* get_opcode(): segments the mashine code in the OP-Code