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authorGabe Black <gblack@eecs.umich.edu>2007-10-02 22:08:09 -0700
committerGabe Black <gblack@eecs.umich.edu>2007-10-02 22:08:09 -0700
commit7c521db9de281326f35a5743e1b4777a8e2bb2f4 (patch)
tree795567aac56636d4e671307295ebafff5aa5c3bd
parent683d6d46f6da1e0e0f377a5be1a14f7b6b4233a4 (diff)
downloadgem5-7c521db9de281326f35a5743e1b4777a8e2bb2f4.tar.xz
X86: Implement the ldst microop and put it in existing microcode where appropriate.
--HG-- extra : convert_revision : f08bd725d07a501bb7a0ce91590b5d37db99c6f3
-rw-r--r--src/arch/x86/isa/includes.isa1
-rw-r--r--src/arch/x86/isa/microops/ldstop.isa25
-rw-r--r--src/arch/x86/tlb.hh6
3 files changed, 23 insertions, 9 deletions
diff --git a/src/arch/x86/isa/includes.isa b/src/arch/x86/isa/includes.isa
index 0679e972b..6724ea9b0 100644
--- a/src/arch/x86/isa/includes.isa
+++ b/src/arch/x86/isa/includes.isa
@@ -145,6 +145,7 @@ output exec {{
#include <cmath>
#include "arch/x86/miscregs.hh"
+#include "arch/x86/tlb.hh"
#include "base/bigint.hh"
#include "cpu/base.hh"
#include "cpu/exetrace.hh"
diff --git a/src/arch/x86/isa/microops/ldstop.isa b/src/arch/x86/isa/microops/ldstop.isa
index 1bdc1d37a..106a8a0fe 100644
--- a/src/arch/x86/isa/microops/ldstop.isa
+++ b/src/arch/x86/isa/microops/ldstop.isa
@@ -123,7 +123,7 @@ def template MicroLoadExecute {{
%(ea_code)s;
DPRINTF(X86, "%s : %s: The address is %#x\n", instMnem, mnemonic, EA);
- fault = read(xc, EA, Mem, 0);
+ fault = read(xc, EA, Mem, (%(mem_flags)s) | (1 << segment));
if(fault == NoFault)
{
@@ -150,7 +150,7 @@ def template MicroLoadInitiateAcc {{
%(ea_code)s;
DPRINTF(X86, "%s : %s: The address is %#x\n", instMnem, mnemonic, EA);
- fault = read(xc, EA, Mem, 0);
+ fault = read(xc, EA, Mem, (%(mem_flags)s) | (1 << segment));
return fault;
}
@@ -197,7 +197,7 @@ def template MicroStoreExecute {{
if(fault == NoFault)
{
- fault = write(xc, Mem, EA, 0);
+ fault = write(xc, Mem, EA, (%(mem_flags)s) | (1 << segment));
if(fault == NoFault)
{
%(op_wb)s;
@@ -224,7 +224,7 @@ def template MicroStoreInitiateAcc {{
if(fault == NoFault)
{
- fault = write(xc, Mem, EA, 0);
+ fault = write(xc, Mem, EA, (%(mem_flags)s) | (1 << segment));
if(fault == NoFault)
{
%(op_wb)s;
@@ -358,7 +358,7 @@ let {{
calculateEA = "EA = SegBase + scale * Index + Base + disp;"
- def defineMicroLoadOp(mnemonic, code):
+ def defineMicroLoadOp(mnemonic, code, mem_flags=0):
global header_output
global decoder_output
global exec_output
@@ -368,7 +368,9 @@ let {{
# Build up the all register version of this micro op
iop = InstObjParams(name, Name, 'X86ISA::LdStOp',
- {"code": code, "ea_code": calculateEA})
+ {"code": code,
+ "ea_code": calculateEA,
+ "mem_flags": mem_flags})
header_output += MicroLdStOpDeclare.subst(iop)
decoder_output += MicroLdStOpConstructor.subst(iop)
exec_output += MicroLoadExecute.subst(iop)
@@ -386,9 +388,10 @@ let {{
microopClasses[name] = LoadOp
defineMicroLoadOp('Ld', 'Data = merge(Data, Mem, dataSize);')
+ defineMicroLoadOp('Ldst', 'Data = merge(Data, Mem, dataSize);', 'StoreCheck')
defineMicroLoadOp('Ldfp', 'FpData.uqw = Mem;')
- def defineMicroStoreOp(mnemonic, code):
+ def defineMicroStoreOp(mnemonic, code, mem_flags=0):
global header_output
global decoder_output
global exec_output
@@ -398,7 +401,9 @@ let {{
# Build up the all register version of this micro op
iop = InstObjParams(name, Name, 'X86ISA::LdStOp',
- {"code": code, "ea_code": calculateEA})
+ {"code": code,
+ "ea_code": calculateEA,
+ "mem_flags": mem_flags})
header_output += MicroLdStOpDeclare.subst(iop)
decoder_output += MicroLdStOpConstructor.subst(iop)
exec_output += MicroStoreExecute.subst(iop)
@@ -419,7 +424,9 @@ let {{
defineMicroStoreOp('Stfp', 'Mem = FpData.uqw;')
iop = InstObjParams("lea", "Lea", 'X86ISA::LdStOp',
- {"code": "Data = merge(Data, EA, dataSize);", "ea_code": calculateEA})
+ {"code": "Data = merge(Data, EA, dataSize);",
+ "ea_code": calculateEA,
+ "mem_flags": 0})
header_output += MicroLeaDeclare.subst(iop)
decoder_output += MicroLdStOpConstructor.subst(iop)
exec_output += MicroLeaExecute.subst(iop)
diff --git a/src/arch/x86/tlb.hh b/src/arch/x86/tlb.hh
index 386d1635d..24373c623 100644
--- a/src/arch/x86/tlb.hh
+++ b/src/arch/x86/tlb.hh
@@ -62,6 +62,7 @@
#if FULL_SYSTEM
+#include "arch/segmentregs.hh"
#include "mem/request.hh"
#include "params/X86DTB.hh"
#include "params/X86ITB.hh"
@@ -73,6 +74,8 @@ class Packet;
namespace X86ISA
{
+ static const unsigned StoreCheck = 1 << NUM_SEGMENTREGS;
+
struct TlbEntry
{
Addr pageStart;
@@ -134,6 +137,7 @@ class DTB : public TLB
#include <iostream>
+#include "arch/x86/segmentregs.hh"
#include "sim/host.hh"
#include "sim/tlb.hh"
@@ -141,6 +145,8 @@ class Checkpoint;
namespace X86ISA
{
+ static const unsigned StoreCheck = 1 << NUM_SEGMENTREGS;
+
struct TlbEntry
{
Addr pageStart;