From 7c089b2001afb93fe51b1a89456b15fd0d00c794 Mon Sep 17 00:00:00 2001
From: Erik Hallnor <ehallnor@umich.edu>
Date: Thu, 4 Mar 2004 14:57:57 -0500
Subject: Copy implementations

arch/alpha/isa_desc:
    Need to return fault for copy operations.
cpu/exec_context.hh:
    Add temporary storage to pass source address from copy load to copy store
cpu/simple_cpu/simple_cpu.cc:
    Implement copy functions.
cpu/simple_cpu/simple_cpu.hh:
    Return fault

--HG--
extra : convert_revision : 98e5ce563449d6057ba45c70eece9235f1649a90
---
 cpu/simple_cpu/simple_cpu.cc | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

(limited to 'cpu/simple_cpu/simple_cpu.cc')

diff --git a/cpu/simple_cpu/simple_cpu.cc b/cpu/simple_cpu/simple_cpu.cc
index 721861dd5..2553bd22a 100644
--- a/cpu/simple_cpu/simple_cpu.cc
+++ b/cpu/simple_cpu/simple_cpu.cc
@@ -327,6 +327,46 @@ change_thread_state(int thread_number, int activate, int priority)
 {
 }
 
+Fault
+SimpleCPU::copySrcTranslate(Addr src)
+{
+    memReq->reset(src, (dcacheInterface) ?
+                  dcacheInterface->getBlockSize()
+                  : 64);
+
+    // translate to physical address
+    Fault fault = xc->translateDataReadReq(memReq);
+
+    if (fault == No_Fault) {
+        xc->copySrcAddr = src;
+        xc->copySrcPhysAddr = memReq->paddr;
+    } else {
+        xc->copySrcAddr = 0;
+        xc->copySrcPhysAddr = 0;
+    }
+    return fault;
+}
+
+Fault
+SimpleCPU::copy(Addr dest)
+{
+    int blk_size = (dcacheInterface) ? dcacheInterface->getBlockSize() : 64;
+    uint8_t data[blk_size];
+    assert(xc->copySrcPhysAddr);
+    memReq->reset(dest, blk_size);
+    // translate to physical address
+    Fault fault = xc->translateDataWriteReq(memReq);
+    if (fault == No_Fault) {
+        Addr dest_addr = memReq->paddr;
+        // Need to read straight from memory since we have more than 8 bytes.
+        memReq->paddr = xc->copySrcPhysAddr;
+        xc->mem->read(memReq, data);
+        memReq->paddr = dest_addr;
+        xc->mem->write(memReq, data);
+    }
+    return fault;
+}
+
 // precise architected memory state accessor macros
 template <class T>
 Fault
-- 
cgit v1.2.3