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#include "utils.h"
#include "definitions.h"
#include <cstdarg>
#include <string>
#include <vector>
static Logger *global_log = Logger::getInstance();
void get_cache_fields(int address, int *tag, int *index, int *offset)
{
*tag = GET_MID_BITS(address, L1_CACHE_LINE_SPEC + LINE_SPEC, MEM_WORD_SPEC);
*index = GET_MID_BITS(address, LINE_SPEC, L1_CACHE_LINE_SPEC + LINE_SPEC);
*offset = GET_LS_BITS(address, LINE_SPEC);
}
void get_instr_fields(
signed int &s1,
signed int &s2,
signed int &s3,
unsigned int &type,
unsigned int &opcode)
{
type = GET_LS_BITS(s1, TYPE_SIZE);
switch (type) {
case 0:
// R-TYPE
opcode = GET_MID_BITS(s1, TYPE_SIZE, TYPE_SIZE + R_OPCODE_SIZE);
s3 = GET_MID_BITS(
s1, TYPE_SIZE + R_OPCODE_SIZE + (REG_SIZE * 2),
TYPE_SIZE + R_OPCODE_SIZE + (REG_SIZE * 3));
s2 = GET_MID_BITS(
s1, TYPE_SIZE + R_OPCODE_SIZE + REG_SIZE,
TYPE_SIZE + R_OPCODE_SIZE + (REG_SIZE * 2));
s1 = GET_MID_BITS(
s1, TYPE_SIZE + R_OPCODE_SIZE,
TYPE_SIZE + R_OPCODE_SIZE + REG_SIZE);
break;
case 1:
// I-TYPE
opcode = GET_MID_BITS(s1, TYPE_SIZE, TYPE_SIZE + OPCODE_SIZE);
s3 = GET_MID_BITS(
s1, TYPE_SIZE + OPCODE_SIZE + (REG_SIZE * 2), WORD_SPEC);
s2 = GET_MID_BITS(
s1, TYPE_SIZE + OPCODE_SIZE + REG_SIZE,
TYPE_SIZE + OPCODE_SIZE + (REG_SIZE * 2));
s1 = GET_MID_BITS(
s1, TYPE_SIZE + OPCODE_SIZE, TYPE_SIZE + OPCODE_SIZE + REG_SIZE);
break;
case 2:
// J-TYPE
opcode = GET_MID_BITS(s1, TYPE_SIZE, TYPE_SIZE + OPCODE_SIZE);
s2 = GET_MID_BITS(s1, TYPE_SIZE + OPCODE_SIZE + REG_SIZE, WORD_SPEC);
s1 = GET_MID_BITS(
s1, TYPE_SIZE + OPCODE_SIZE, TYPE_SIZE + OPCODE_SIZE + REG_SIZE);
break;
default:
global_log->log(
DEBUG,
string_format("%s returning invalid type: %d", __FUNCTION__, type));
}
}
const std::string string_format(const char *const zcFormat, ...)
{
va_list vaArgs;
va_start(vaArgs, zcFormat);
va_list vaArgsCopy;
va_copy(vaArgsCopy, vaArgs);
const int iLen = std::vsnprintf(NULL, 0, zcFormat, vaArgsCopy);
va_end(vaArgsCopy);
std::vector<char> zc(iLen + 1);
std::vsnprintf(zc.data(), zc.size(), zcFormat, vaArgs);
va_end(vaArgs);
return std::string(zc.data(), iLen);
}
int wrap_address(int address)
{
if (address < 0) {
return ((address % MEM_WORDS) + MEM_WORDS) % MEM_WORDS;
}
return address % MEM_WORDS;
}
void get_memory_index(int address, int &line, int &word)
{
line = wrap_address(address) / LINE_SIZE;
word = address % LINE_SIZE;
}
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