/*
- * Copyright (c) 2011 ARM Limited
+ * Copyright (c) 2011-2013, 2018 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* @file
* PortProxy Object Declaration.
*
- * Port proxies are used when non structural entities need access to
- * the memory system. Proxy objects replace the previous
- * FunctionalPort, TranslatingPort and VirtualPort objects, which
- * provided the same functionality as the proxies, but were instances
- * of ports not corresponding to real structural ports of the
- * simulated system. Via the port proxies all the accesses go through
- * an actual port and thus are transparent to a potentially
+ * Port proxies are used when non-structural entities need access to
+ * the memory system (or structural entities that want to peak into
+ * the memory system without making a real memory access).
+ *
+ * Proxy objects replace the previous FunctionalPort, TranslatingPort
+ * and VirtualPort objects, which provided the same functionality as
+ * the proxies, but were instances of ports not corresponding to real
+ * structural ports of the simulated system. Via the port proxies all
+ * the accesses go through an actual port (either the system port,
+ * e.g. for processes or initialisation, or a the data port of the
+ * CPU, e.g. for threads) and thus are transparent to a potentially
* distributed memory and automatically adhere to the memory map of
* the system.
*/
#define __MEM_PORT_PROXY_HH__
#include "config/the_isa.hh"
-#if THE_ISA != NO_ISA
+#if THE_ISA != NULL_ISA
#include "arch/isa_traits.hh"
#endif
-#include "base/types.hh"
#include "mem/port.hh"
#include "sim/byteswap.hh"
/**
- * This object is a proxy for a structural port,
- * to be used for debug accesses.
+ * This object is a proxy for a structural port, to be used for debug
+ * accesses.
*
* This proxy object is used when non structural entities
* (e.g. thread contexts, object file loaders) need access to the
*/
class PortProxy
{
- protected:
- Port &_port;
+ private:
+
+ /** The actual physical port used by this proxy. */
+ MasterPort &_port;
+
+ /** Granularity of any transactions issued through this proxy. */
+ const unsigned int _cacheLineSize;
public:
- PortProxy(Port &port) : _port(port) { }
+ PortProxy(MasterPort &port, unsigned int cacheLineSize) :
+ _port(port), _cacheLineSize(cacheLineSize) { }
virtual ~PortProxy() { }
- public:
/**
* Read size bytes memory at address and store in p.
*/
- virtual void readBlob(Addr address, uint8_t* p, int size)
- { _port.readBlob(address, p, size); }
+ virtual void readBlob(Addr addr, uint8_t* p, int size) const {
+ readBlobPhys(addr, 0, p, size);
+ }
/**
* Write size bytes from p to address.
*/
- virtual void writeBlob(Addr address, uint8_t* p, int size)
- { _port.writeBlob(address, p, size); }
+ virtual void writeBlob(Addr addr, const uint8_t* p, int size) const {
+ writeBlobPhys(addr, 0, p, size);
+ }
/**
* Fill size bytes starting at addr with byte value val.
*/
- virtual void memsetBlob(Addr address, uint8_t v, int size)
- { _port.memsetBlob(address, v, size); }
+ virtual void memsetBlob(Addr addr, uint8_t v, int size) const {
+ memsetBlobPhys(addr, 0, v, size);
+ }
+
+ /**
+ * Read size bytes memory at physical address and store in p.
+ */
+ void readBlobPhys(Addr addr, Request::Flags flags,
+ uint8_t* p, int size) const;
+
+ /**
+ * Write size bytes from p to physical address.
+ */
+ void writeBlobPhys(Addr addr, Request::Flags flags,
+ const uint8_t* p, int size) const;
+
+ /**
+ * Fill size bytes starting at physical addr with byte value val.
+ */
+ void memsetBlobPhys(Addr addr, Request::Flags flags,
+ uint8_t v, int size) const;
+
+ /**
+ * Read sizeof(T) bytes from address and return as object T.
+ */
+ template <typename T>
+ T read(Addr address) const;
+
+ /**
+ * Write object T to address. Writes sizeof(T) bytes.
+ */
+ template <typename T>
+ void write(Addr address, T data) const;
/**
* Read sizeof(T) bytes from address and return as object T.
+ * Performs selected endianness transform.
*/
template <typename T>
- T read(Addr address);
+ T readGtoH(Addr address, ByteOrder guest_byte_order) const;
/**
* Write object T to address. Writes sizeof(T) bytes.
+ * Performs selected endianness transform.
*/
template <typename T>
- void write(Addr address, T data);
+ void writeHtoG(Addr address, T data, ByteOrder guest_byte_order) const;
-#if THE_ISA != NO_ISA
+#if THE_ISA != NULL_ISA
/**
* Read sizeof(T) bytes from address and return as object T.
* Performs Guest to Host endianness transform.
*/
template <typename T>
- T readGtoH(Addr address);
+ T readGtoH(Addr address) const;
/**
* Write object T to address. Writes sizeof(T) bytes.
* Performs Host to Guest endianness transform.
*/
template <typename T>
- void writeHtoG(Addr address, T data);
+ void writeHtoG(Addr address, T data) const;
#endif
};
+/**
+ * This object is a proxy for a structural port, to be used for debug
+ * accesses to secure memory.
+ *
+ * The addresses are interpreted as physical addresses to secure memory.
+ */
+class SecurePortProxy : public PortProxy
+{
+ public:
+ SecurePortProxy(MasterPort &port, unsigned int cache_line_size)
+ : PortProxy(port, cache_line_size) {}
+
+ void readBlob(Addr addr, uint8_t *p, int size) const override;
+ void writeBlob(Addr addr, const uint8_t *p, int size) const override;
+ void memsetBlob(Addr addr, uint8_t val, int size) const override;
+};
+
template <typename T>
T
-PortProxy::read(Addr address)
+PortProxy::read(Addr address) const
{
T data;
readBlob(address, (uint8_t*)&data, sizeof(T));
template <typename T>
void
-PortProxy::write(Addr address, T data)
+PortProxy::write(Addr address, T data) const
+{
+ writeBlob(address, (uint8_t*)&data, sizeof(T));
+}
+
+template <typename T>
+T
+PortProxy::readGtoH(Addr address, ByteOrder byte_order) const
+{
+ T data;
+ readBlob(address, (uint8_t*)&data, sizeof(T));
+ return gtoh(data, byte_order);
+}
+
+template <typename T>
+void
+PortProxy::writeHtoG(Addr address, T data, ByteOrder byte_order) const
{
+ data = htog(data, byte_order);
writeBlob(address, (uint8_t*)&data, sizeof(T));
}
-#if THE_ISA != NO_ISA
+#if THE_ISA != NULL_ISA
template <typename T>
T
-PortProxy::readGtoH(Addr address)
+PortProxy::readGtoH(Addr address) const
{
T data;
readBlob(address, (uint8_t*)&data, sizeof(T));
template <typename T>
void
-PortProxy::writeHtoG(Addr address, T data)
+PortProxy::writeHtoG(Addr address, T data) const
{
data = TheISA::htog(data);
writeBlob(address, (uint8_t*)&data, sizeof(T));
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