gem5  v21.1.0.2
e820.cc
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37 
38 #include "arch/x86/bios/e820.hh"
39 
40 #include "mem/port_proxy.hh"
41 #include "sim/byteswap.hh"
42 
43 namespace gem5
44 {
45 
46 using namespace X86ISA;
47 
48 template<class T>
49 void writeVal(T val, PortProxy& proxy, Addr &addr)
50 {
51  T guestVal = htole(val);
52  proxy.writeBlob(addr, &guestVal, sizeof(T));
53  addr += sizeof(T);
54 }
55 
57 {
58  uint8_t e820Nr = entries.size();
59 
60  // Make sure the number of entries isn't bigger than what the kernel
61  // would be capable of handling.
62  assert(e820Nr <= 128);
63 
64  uint8_t guestE820Nr = htole(e820Nr);
65 
66  proxy.writeBlob(countAddr, &guestE820Nr, sizeof(guestE820Nr));
67 
68  for (int i = 0; i < e820Nr; i++) {
69  writeVal(entries[i]->addr, proxy, addr);
70  writeVal(entries[i]->size, proxy, addr);
71  writeVal(entries[i]->type, proxy, addr);
72  }
73 }
74 
75 } // namespace gem5
gem5::PortProxy::writeBlob
void writeBlob(Addr addr, const void *p, int size) const
Same as tryWriteBlob, but insists on success.
Definition: port_proxy.hh:192
gem5::X86ISA::val
Bitfield< 63 > val
Definition: misc.hh:775
gem5::ArmISA::i
Bitfield< 7 > i
Definition: misc_types.hh:66
gem5::X86ISA::type
type
Definition: misc.hh:733
port_proxy.hh
gem5::PortProxy
This object is a proxy for a port or other object which implements the functional response protocol,...
Definition: port_proxy.hh:86
gem5::writeVal
void writeVal(T val, PortProxy &proxy, Addr &addr)
Definition: e820.cc:49
gem5::Addr
uint64_t Addr
Address type This will probably be moved somewhere else in the near future.
Definition: types.hh:147
gem5::X86ISA::E820Table::writeTo
void writeTo(PortProxy &proxy, Addr countAddr, Addr addr)
Definition: e820.cc:56
gem5::htole
T htole(T value)
Definition: byteswap.hh:172
e820.hh
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: decoder.cc:40
byteswap.hh
gem5::X86ISA::addr
Bitfield< 3 > addr
Definition: types.hh:84

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