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-rw-r--r--src/mem/request.hh31
1 files changed, 21 insertions, 10 deletions
diff --git a/src/mem/request.hh b/src/mem/request.hh
index de0512e1c..43d8ff1d5 100644
--- a/src/mem/request.hh
+++ b/src/mem/request.hh
@@ -71,6 +71,10 @@ const uint32_t EVICT_NEXT = 0x20000;
const uint32_t NO_ALIGN_FAULT = 0x40000;
/** The request was an instruction read. */
const uint32_t INST_READ = 0x80000;
+/** This request is for a memory swap. */
+const uint32_t MEM_SWAP = 0x100000;
+const uint32_t MEM_SWAP_COND = 0x200000;
+
class Request
{
@@ -104,8 +108,9 @@ class Request
/** The virtual address of the request. */
Addr vaddr;
- /** The return value of store conditional. */
- uint64_t scResult;
+ /** Extra data for the request, such as the return value of
+ * store conditional or the compare value for a CAS. */
+ uint64_t extraData;
/** The cpu number (for statistics, typically). */
int cpuNum;
@@ -120,7 +125,7 @@ class Request
/** Whether or not the asid & vaddr are valid. */
bool validAsidVaddr;
/** Whether or not the sc result is valid. */
- bool validScResult;
+ bool validExData;
/** Whether or not the cpu number & thread ID are valid. */
bool validCpuAndThreadNums;
/** Whether or not the pc is valid. */
@@ -130,7 +135,7 @@ class Request
/** Minimal constructor. No fields are initialized. */
Request()
: validPaddr(false), validAsidVaddr(false),
- validScResult(false), validCpuAndThreadNums(false), validPC(false)
+ validExData(false), validCpuAndThreadNums(false), validPC(false)
{}
/**
@@ -169,7 +174,7 @@ class Request
validPaddr = true;
validAsidVaddr = false;
validPC = false;
- validScResult = false;
+ validExData = false;
mmapedIpr = false;
}
@@ -187,7 +192,7 @@ class Request
validPaddr = false;
validAsidVaddr = true;
validPC = true;
- validScResult = false;
+ validExData = false;
mmapedIpr = false;
}
@@ -237,12 +242,12 @@ class Request
void setMmapedIpr(bool r) { assert(validAsidVaddr); mmapedIpr = r; }
/** Accessor function to check if sc result is valid. */
- bool scResultValid() { return validScResult; }
+ bool extraDataValid() { return validExData; }
/** Accessor function for store conditional return value.*/
- uint64_t getScResult() { assert(validScResult); return scResult; }
+ uint64_t getExtraData() { assert(validExData); return extraData; }
/** Accessor function for store conditional return value.*/
- void setScResult(uint64_t _scResult)
- { scResult = _scResult; validScResult = true; }
+ void setExtraData(uint64_t _extraData)
+ { extraData = _extraData; validExData = true; }
/** Accessor function for cpu number.*/
int getCpuNum() { assert(validCpuAndThreadNums); return cpuNum; }
@@ -259,6 +264,12 @@ class Request
bool isLocked() { return (getFlags() & LOCKED) != 0; }
+ bool isSwap() { return (getFlags() & MEM_SWAP ||
+ getFlags() & MEM_SWAP_COND); }
+
+ bool isCondSwap() { return (getFlags() & MEM_SWAP_COND) != 0; }
+
+
friend class Packet;
};