diff options
Diffstat (limited to 'src/mem/request.hh')
| -rw-r--r-- | src/mem/request.hh | 46 |
1 files changed, 40 insertions, 6 deletions
diff --git a/src/mem/request.hh b/src/mem/request.hh index d40f610f2..177f17de2 100644 --- a/src/mem/request.hh +++ b/src/mem/request.hh @@ -58,6 +58,7 @@ #include "base/flags.hh" #include "base/misc.hh" #include "base/types.hh" +#include "cpu/inst_seq.hh" #include "sim/core.hh" /** @@ -204,6 +205,8 @@ class Request VALID_PADDR = 0x00000002, /** Whether or not the vaddr & asid are valid. */ VALID_VADDR = 0x00000004, + /** Whether or not the instruction sequence number is valid. */ + VALID_INST_SEQ_NUM = 0x00000008, /** Whether or not the pc is valid. */ VALID_PC = 0x00000010, /** Whether or not the context ID is valid. */ @@ -211,7 +214,6 @@ class Request VALID_THREAD_ID = 0x00000040, /** Whether or not the sc result is valid. */ VALID_EXTRA_DATA = 0x00000080, - /** * These flags are *not* cleared when a Request object is reused * (assigned a new address). @@ -297,6 +299,9 @@ class Request /** program counter of initiating access; for tracing/debugging */ Addr _pc; + /** Sequence number of the instruction that creates the request */ + const InstSeqNum _reqInstSeqNum; + public: /** @@ -308,9 +313,21 @@ class Request : _paddr(0), _size(0), _masterId(invldMasterId), _time(0), _taskId(ContextSwitchTaskId::Unknown), _asid(0), _vaddr(0), _extraData(0), _contextId(0), _threadId(0), _pc(0), - translateDelta(0), accessDelta(0), depth(0) + _reqInstSeqNum(0), translateDelta(0), accessDelta(0), depth(0) {} + Request(Addr paddr, unsigned size, Flags flags, MasterID mid, + InstSeqNum seq_num, ContextID cid, ThreadID tid) + : _paddr(0), _size(0), _masterId(invldMasterId), _time(0), + _taskId(ContextSwitchTaskId::Unknown), _asid(0), _vaddr(0), + _extraData(0), _contextId(0), _threadId(0), _pc(0), + _reqInstSeqNum(seq_num), translateDelta(0), accessDelta(0), depth(0) + { + setPhys(paddr, size, flags, mid, curTick()); + setThreadContext(cid, tid); + privateFlags.set(VALID_INST_SEQ_NUM); + } + /** * Constructor for physical (e.g. device) requests. Initializes * just physical address, size, flags, and timestamp (to curTick()). @@ -320,7 +337,7 @@ class Request : _paddr(0), _size(0), _masterId(invldMasterId), _time(0), _taskId(ContextSwitchTaskId::Unknown), _asid(0), _vaddr(0), _extraData(0), _contextId(0), _threadId(0), _pc(0), - translateDelta(0), accessDelta(0), depth(0) + _reqInstSeqNum(0), translateDelta(0), accessDelta(0), depth(0) { setPhys(paddr, size, flags, mid, curTick()); } @@ -329,7 +346,7 @@ class Request : _paddr(0), _size(0), _masterId(invldMasterId), _time(0), _taskId(ContextSwitchTaskId::Unknown), _asid(0), _vaddr(0), _extraData(0), _contextId(0), _threadId(0), _pc(0), - translateDelta(0), accessDelta(0), depth(0) + _reqInstSeqNum(0), translateDelta(0), accessDelta(0), depth(0) { setPhys(paddr, size, flags, mid, time); } @@ -339,7 +356,7 @@ class Request : _paddr(0), _size(0), _masterId(invldMasterId), _time(0), _taskId(ContextSwitchTaskId::Unknown), _asid(0), _vaddr(0), _extraData(0), _contextId(0), _threadId(0), _pc(0), - translateDelta(0), accessDelta(0), depth(0) + _reqInstSeqNum(0), translateDelta(0), accessDelta(0), depth(0) { setPhys(paddr, size, flags, mid, time); privateFlags.set(VALID_PC); @@ -351,7 +368,7 @@ class Request : _paddr(0), _size(0), _masterId(invldMasterId), _time(0), _taskId(ContextSwitchTaskId::Unknown), _asid(0), _vaddr(0), _extraData(0), _contextId(0), _threadId(0), _pc(0), - translateDelta(0), accessDelta(0), depth(0) + _reqInstSeqNum(0), translateDelta(0), accessDelta(0), depth(0) { setVirt(asid, vaddr, size, flags, mid, pc); setThreadContext(cid, tid); @@ -641,6 +658,23 @@ class Request void setAccessLatency() { accessDelta = curTick() - _time - translateDelta; } Tick getAccessLatency() const { return accessDelta; } + /** + * Accessor for the sequence number of instruction that creates the + * request. + */ + bool + hasInstSeqNum() const + { + return privateFlags.isSet(VALID_INST_SEQ_NUM); + } + + InstSeqNum + getReqInstSeqNum() const + { + assert(privateFlags.isSet(VALID_INST_SEQ_NUM)); + return _reqInstSeqNum; + } + /** Accessor functions for flags. Note that these are for testing only; setting flags should be done via setFlags(). */ bool isUncacheable() const { return _flags.isSet(UNCACHEABLE); } |