e820.cc

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#include "arch/x86/bios/e820.hh"
 
#include "arch/x86/isa_traits.hh"
#include "mem/port_proxy.hh"
#include "sim/byteswap.hh"
 
using namespace X86ISA;
 
template<class T>
void writeVal(T val, PortProxy& proxy, Addr &addr)
{
    T guestVal = htole(val);
    proxy.writeBlob(addr, &guestVal, sizeof(T));
    addr += sizeof(T);
}
 
void X86ISA::E820Table::writeTo(PortProxy& proxy, Addr countAddr, Addr addr)
{
    uint8_t e820Nr = entries.size();
 
    // Make sure the number of entries isn't bigger than what the kernel
    // would be capable of handling.
    assert(e820Nr <= 128);
 
    uint8_t guestE820Nr = htole(e820Nr);
 
    proxy.writeBlob(countAddr, &guestE820Nr, sizeof(guestE820Nr));
 
    for (int i = 0; i < e820Nr; i++) {
        writeVal(entries[i]->addr, proxy, addr);
        writeVal(entries[i]->size, proxy, addr);
        writeVal(entries[i]->type, proxy, addr);
    }
}