mirror of
https://github.com/JorjBauer/aiie.git
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104 lines
2.1 KiB
C++
104 lines
2.1 KiB
C++
#ifdef TEENSYDUINO
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#include <Arduino.h>
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#include "teensy-println.h"
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#endif
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#include "vmram.h"
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#include <string.h>
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#include "globals.h"
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#ifdef TEENSYDUINO
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EXTMEM uint8_t preallocatedRam[599*256];
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#else
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#include <stdio.h>
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uint8_t preallocatedRam[599*256];
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#endif
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#ifndef TEENSYDUINO
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#include <assert.h>
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#else
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#define assert(x) { if (!(x)) {print("assertion failed at "); println(__LINE__); delay(10000);} }
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//#define assert(x) { }
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#endif
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// Serializing token for RAM data
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#define RAMMAGIC 'R'
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VMRam::VMRam() {memset(preallocatedRam, 0, sizeof(preallocatedRam)); }
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VMRam::~VMRam() { }
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void VMRam::init()
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{
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for (uint32_t i=0; i<sizeof(preallocatedRam); i++) {
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preallocatedRam[i] = 0;
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}
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}
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uint8_t VMRam::readByte(uint32_t addr)
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{
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return preallocatedRam[addr];
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}
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void VMRam::writeByte(uint32_t addr, uint8_t value)
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{
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preallocatedRam[addr] = value;
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}
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uint8_t *VMRam::memPtr(uint32_t addr)
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{
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printf("Asked for preallocated RAM pointer at 0x%X\n", addr);
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printf("Base is 0x%llX\n", (unsigned long long) preallocatedRam);
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return &preallocatedRam[addr];
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}
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bool VMRam::Serialize(int8_t fd)
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{
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uint32_t size = sizeof(preallocatedRam);
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uint8_t buf[5] = { RAMMAGIC,
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(uint8_t)((size >> 24) & 0xFF),
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(uint8_t)((size >> 16) & 0xFF),
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(uint8_t)((size >> 8) & 0xFF),
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(uint8_t)((size ) & 0xFF) };
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if (g_filemanager->write(fd, buf, 5) != 5)
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return false;
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if (g_filemanager->write(fd, preallocatedRam, sizeof(preallocatedRam)) != sizeof(preallocatedRam))
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return false;
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if (g_filemanager->write(fd, buf, 1) != 1)
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return false;
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return true;
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}
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bool VMRam::Deserialize(int8_t fd)
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{
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uint8_t buf[5];
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if (g_filemanager->read(fd, buf, 5) != 5)
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return false;
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if (buf[0] != RAMMAGIC)
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return false;
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uint32_t size = (buf[1] << 24) | (buf[2] << 16) | (buf[3] << 8) | buf[4];
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if (size != sizeof(preallocatedRam))
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return false;
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if (g_filemanager->read(fd, preallocatedRam, size) != size)
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return false;
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if (g_filemanager->read(fd, buf, 1) != 1)
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return false;
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if (buf[0] != RAMMAGIC)
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return false;
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return true;
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}
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bool VMRam::Test()
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{
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return true;
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}
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