gipu/cpp/vmas.cpp
2017-05-14 22:10:58 +02:00

81 lines
1.8 KiB
C++

#include "vmas.h"
#include "debug.h"
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
VMAddrSpace::VMAddrSpace() {
stacksize = DEFAULT_STACKSIZE;
codesize = DEFAULT_CODESIZE;
datasize = DEFAULT_DATASIZE;
return;
}
VMAddrSpace::VMAddrSpace(uint32_t ss, uint32_t cs, uint32_t ds) {
stacksize = ss;
codesize = cs;
datasize = ds;
return;
}
bool VMAddrSpace::allocate(void) {
DBG_INFO(("Allocating sections...\n"));
if (code == NULL) {
code = (uint8_t *)malloc(codesize);
}
if (data == NULL) {
data = (uint8_t *)malloc(datasize);
}
if (stack == NULL) {
stack = (uint8_t *)malloc(stacksize);
}
if (code == NULL) {
DBG_ERROR(("Couldn't allocate code section.\n"));
return false;
}
data = (uint8_t *)malloc(datasize);
if (data == NULL) {
DBG_ERROR(("Couldn't allocate data section.\n"));
return false;
}
stack = (uint8_t *)malloc(stacksize);
if (stack == NULL) {
DBG_ERROR(("Couldn't allocate stack section.\n"));
return false;
}
DBG_SUCC(("Done!\n"));
return true;
}
bool VMAddrSpace::insCode(uint8_t *buf, uint8_t size) {
if (code) {
DBG_INFO(("Copying buffer into code section.\n"));
memcpy(code, buf, size);
} else {
DBG_ERROR(("Couldn't write into code section.\n"));
return false;
}
return true;
}
bool VMAddrSpace::insStack(uint8_t *buf, uint8_t size) {
if (stack) {
DBG_INFO(("Copying buffer into stack section.\n"));
memcpy(stack, buf, size);
} else {
DBG_ERROR(("Couldn't write into stack section.\n"));
return false;
}
return true;
}
bool VMAddrSpace::insData(uint8_t *buf, uint8_t size) {
if (this->code) {
DBG_INFO(("Copying buffer into data section.\n"));
memcpy(data, buf, size);
} else {
DBG_ERROR(("Couldn't write into data section.\n"));
return false;
}
return true;
}