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-rw-r--r--src/arch/x86/SConscript1
-rw-r--r--src/arch/x86/isa/decoder/two_byte_opcodes.isa4
-rw-r--r--src/arch/x86/isa/insts/system/__init__.py3
-rw-r--r--src/arch/x86/isa/insts/system/msrs.py74
-rw-r--r--src/arch/x86/isa/microasm.isa4
-rw-r--r--src/arch/x86/isa/microops/ldstop.isa22
-rw-r--r--src/arch/x86/miscregs.hh2
-rw-r--r--src/arch/x86/mmaped_ipr.hh5
-rw-r--r--src/arch/x86/tlb.cc299
-rw-r--r--src/arch/x86/x86_traits.hh6
10 files changed, 401 insertions, 19 deletions
diff --git a/src/arch/x86/SConscript b/src/arch/x86/SConscript
index 6d7984147..6d65fbb57 100644
--- a/src/arch/x86/SConscript
+++ b/src/arch/x86/SConscript
@@ -179,6 +179,7 @@ if env['TARGET_ISA'] == 'x86':
'general_purpose/system_calls.py',
'system/__init__.py',
'system/undefined_operation.py',
+ 'system/msrs.py',
'simd128/__init__.py',
'simd128/integer/__init__.py',
'simd128/integer/data_transfer/__init__.py',
diff --git a/src/arch/x86/isa/decoder/two_byte_opcodes.isa b/src/arch/x86/isa/decoder/two_byte_opcodes.isa
index eae994706..0482fdf23 100644
--- a/src/arch/x86/isa/decoder/two_byte_opcodes.isa
+++ b/src/arch/x86/isa/decoder/two_byte_opcodes.isa
@@ -211,9 +211,9 @@
default: Inst::UD2();
}
0x06: decode OPCODE_OP_BOTTOM3 {
- 0x0: wrmsr();
+ 0x0: Inst::WRMSR();
0x1: rdtsc();
- 0x2: rdmsr();
+ 0x2: Inst::RDMSR();
0x3: rdpmc();
0x4: sysenter();
0x5: sysexit();
diff --git a/src/arch/x86/isa/insts/system/__init__.py b/src/arch/x86/isa/insts/system/__init__.py
index 72e3bdf0a..6d4b3f3d1 100644
--- a/src/arch/x86/isa/insts/system/__init__.py
+++ b/src/arch/x86/isa/insts/system/__init__.py
@@ -53,7 +53,8 @@
#
# Authors: Gabe Black
-categories = ["undefined_operation"]
+categories = ["undefined_operation",
+ "msrs"]
microcode = ""
for category in categories:
diff --git a/src/arch/x86/isa/insts/system/msrs.py b/src/arch/x86/isa/insts/system/msrs.py
new file mode 100644
index 000000000..ea576510b
--- /dev/null
+++ b/src/arch/x86/isa/insts/system/msrs.py
@@ -0,0 +1,74 @@
+# Copyright (c) 2007 The Hewlett-Packard Development Company
+# All rights reserved.
+#
+# Redistribution and use of this software in source and binary forms,
+# with or without modification, are permitted provided that the
+# following conditions are met:
+#
+# The software must be used only for Non-Commercial Use which means any
+# use which is NOT directed to receiving any direct monetary
+# compensation for, or commercial advantage from such use. Illustrative
+# examples of non-commercial use are academic research, personal study,
+# teaching, education and corporate research & development.
+# Illustrative examples of commercial use are distributing products for
+# commercial advantage and providing services using the software for
+# commercial advantage.
+#
+# If you wish to use this software or functionality therein that may be
+# covered by patents for commercial use, please contact:
+# Director of Intellectual Property Licensing
+# Office of Strategy and Technology
+# Hewlett-Packard Company
+# 1501 Page Mill Road
+# Palo Alto, California 94304
+#
+# Redistributions of source code must retain the above copyright notice,
+# this list of conditions and the following disclaimer. Redistributions
+# in binary form must reproduce the above copyright notice, this list of
+# conditions and the following disclaimer in the documentation and/or
+# other materials provided with the distribution. Neither the name of
+# the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission. No right of
+# sublicense is granted herewith. Derivatives of the software and
+# output created using the software may be prepared, but only for
+# Non-Commercial Uses. Derivatives of the software may be shared with
+# others provided: (i) the others agree to abide by the list of
+# conditions herein which includes the Non-Commercial Use restrictions;
+# and (ii) such Derivatives of the software include the above copyright
+# notice to acknowledge the contribution from this software where
+# applicable, this list of conditions and the disclaimer below.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: Gabe Black
+
+microcode = '''
+def macroop WRMSR
+{
+ limm t1, "IntAddrPrefixMSR >> 3"
+ ld t2, intseg, [8, t1, rcx], dataSize=8, addressSize=4
+ mov rax, rax, t2, dataSize=4
+ srli t2, t2, 32, dataSize=8
+ mov rdx, rdx, t2, dataSize=4
+};
+
+def macroop RDMSR
+{
+ limm t1, "IntAddrPrefixMSR >> 3"
+ mov t2, t2, rdx, dataSize=4
+ slli t2, t2, 32, dataSize=8
+ mov t2, t2, rax, dataSize=4
+ st t2, intseg, [8, t1, rcx], dataSize=8, addressSize=4
+};
+'''
diff --git a/src/arch/x86/isa/microasm.isa b/src/arch/x86/isa/microasm.isa
index c8bc36b69..50135e30c 100644
--- a/src/arch/x86/isa/microasm.isa
+++ b/src/arch/x86/isa/microasm.isa
@@ -106,6 +106,10 @@ let {{
assembler.symbols["riprel"] = \
["1", assembler.symbols["t0"], assembler.symbols["t7"]]
+ # This segment selects an internal address space mapped to MSRs,
+ # CPUID info, etc.
+ assembler.symbols["intseg"] = "NUM_SEGMENTREGS"
+
for reg in ('ax', 'bx', 'cx', 'dx', 'sp', 'bp', 'si', 'di'):
assembler.symbols["r%s" % reg] = "INTREG_R%s" % reg.upper()
diff --git a/src/arch/x86/isa/microops/ldstop.isa b/src/arch/x86/isa/microops/ldstop.isa
index 106a8a0fe..32fefb5fa 100644
--- a/src/arch/x86/isa/microops/ldstop.isa
+++ b/src/arch/x86/isa/microops/ldstop.isa
@@ -325,13 +325,13 @@ def template MicroLdStOpConstructor {{
let {{
class LdStOp(X86Microop):
- def __init__(self, data, segment, addr, disp, dataSize):
+ def __init__(self, data, segment, addr, disp, dataSize, addressSize):
self.data = data
[self.scale, self.index, self.base] = addr
self.disp = disp
self.segment = segment
self.dataSize = dataSize
- self.addressSize = "env.addressSize"
+ self.addressSize = addressSize
def getAllocator(self, *microFlags):
allocator = '''new %(class_name)s(machInst, mnemonic
@@ -378,10 +378,10 @@ let {{
exec_output += MicroLoadCompleteAcc.subst(iop)
class LoadOp(LdStOp):
- def __init__(self, data, segment, addr,
- disp = 0, dataSize="env.dataSize"):
+ def __init__(self, data, segment, addr, disp = 0,
+ dataSize="env.dataSize", addressSize="env.addressSize"):
super(LoadOp, self).__init__(data, segment,
- addr, disp, dataSize)
+ addr, disp, dataSize, addressSize)
self.className = Name
self.mnemonic = name
@@ -411,10 +411,10 @@ let {{
exec_output += MicroStoreCompleteAcc.subst(iop)
class StoreOp(LdStOp):
- def __init__(self, data, segment, addr,
- disp = 0, dataSize="env.dataSize"):
+ def __init__(self, data, segment, addr, disp = 0,
+ dataSize="env.dataSize", addressSize="env.addressSize"):
super(StoreOp, self).__init__(data, segment,
- addr, disp, dataSize)
+ addr, disp, dataSize, addressSize)
self.className = Name
self.mnemonic = name
@@ -432,10 +432,10 @@ let {{
exec_output += MicroLeaExecute.subst(iop)
class LeaOp(LdStOp):
- def __init__(self, data, segment, addr,
- disp = 0, dataSize="env.dataSize"):
+ def __init__(self, data, segment, addr, disp = 0,
+ dataSize="env.dataSize", addressSize="env.addressSize"):
super(LeaOp, self).__init__(data, segment,
- addr, disp, dataSize)
+ addr, disp, dataSize, addressSize)
self.className = "Lea"
self.mnemonic = "lea"
diff --git a/src/arch/x86/miscregs.hh b/src/arch/x86/miscregs.hh
index b4d06092b..a516a2018 100644
--- a/src/arch/x86/miscregs.hh
+++ b/src/arch/x86/miscregs.hh
@@ -164,7 +164,7 @@ namespace X86ISA
MISCREG_MTRR_FIX_16K_80000,
MISCREG_MTRR_FIX_16K_A0000,
MISCREG_MTRR_FIX_4K_C0000,
- MISCREG_MTRR_FIX_4k_C8000,
+ MISCREG_MTRR_FIX_4K_C8000,
MISCREG_MTRR_FIX_4K_D0000,
MISCREG_MTRR_FIX_4K_D8000,
MISCREG_MTRR_FIX_4K_E0000,
diff --git a/src/arch/x86/mmaped_ipr.hh b/src/arch/x86/mmaped_ipr.hh
index 1fef72fa6..c7befa35b 100644
--- a/src/arch/x86/mmaped_ipr.hh
+++ b/src/arch/x86/mmaped_ipr.hh
@@ -76,7 +76,7 @@ namespace X86ISA
#if !FULL_SYSTEM
panic("Shouldn't have a memory mapped register in SE\n");
#else
- panic("Memory mapped registers aren't implemented for x86!\n");
+ pkt->set(xc->readMiscReg(pkt->getAddr() / sizeof(MiscReg)));
#endif
}
@@ -86,7 +86,8 @@ namespace X86ISA
#if !FULL_SYSTEM
panic("Shouldn't have a memory mapped register in SE\n");
#else
- panic("Memory mapped registers aren't implemented for x86!\n");
+ xc->setMiscReg(pkt->getAddr() / sizeof(MiscReg),
+ gtoh(pkt->get<uint64_t>()));
#endif
}
};
diff --git a/src/arch/x86/tlb.cc b/src/arch/x86/tlb.cc
index 93df08830..d55f04080 100644
--- a/src/arch/x86/tlb.cc
+++ b/src/arch/x86/tlb.cc
@@ -61,6 +61,7 @@
#include "arch/x86/pagetable.hh"
#include "arch/x86/tlb.hh"
+#include "arch/x86/x86_traits.hh"
#include "base/bitfield.hh"
#include "base/trace.hh"
#include "cpu/thread_context.hh"
@@ -142,10 +143,304 @@ TLB::translate(RequestPtr &req, ThreadContext *tc, bool write, bool execute)
uint32_t flags = req->getFlags();
bool storeCheck = flags & StoreCheck;
- int seg = flags & (mask(NUM_SEGMENTREGS));
+ int seg = flags & mask(3);
//XXX Junk code to surpress the warning
- if (storeCheck) seg = seg;
+ if (storeCheck);
+
+ // If this is true, we're dealing with a request to read an internal
+ // value.
+ if (seg == NUM_SEGMENTREGS) {
+ Addr prefix = vaddr & IntAddrPrefixMask;
+ if (prefix == IntAddrPrefixCPUID) {
+ panic("CPUID memory space not yet implemented!\n");
+ } else if (prefix == IntAddrPrefixMSR) {
+ req->setMmapedIpr(true);
+ Addr regNum = 0;
+ switch (vaddr & ~IntAddrPrefixMask) {
+ case 0x10:
+ regNum = MISCREG_TSC;
+ break;
+ case 0xFE:
+ regNum = MISCREG_MTRRCAP;
+ break;
+ case 0x174:
+ regNum = MISCREG_SYSENTER_CS;
+ break;
+ case 0x175:
+ regNum = MISCREG_SYSENTER_ESP;
+ break;
+ case 0x176:
+ regNum = MISCREG_SYSENTER_EIP;
+ break;
+ case 0x179:
+ regNum = MISCREG_MCG_CAP;
+ break;
+ case 0x17A:
+ regNum = MISCREG_MCG_STATUS;
+ break;
+ case 0x17B:
+ regNum = MISCREG_MCG_CTL;
+ break;
+ case 0x1D9:
+ regNum = MISCREG_DEBUG_CTL_MSR;
+ break;
+ case 0x1DB:
+ regNum = MISCREG_LAST_BRANCH_FROM_IP;
+ break;
+ case 0x1DC:
+ regNum = MISCREG_LAST_BRANCH_TO_IP;
+ break;
+ case 0x1DD:
+ regNum = MISCREG_LAST_EXCEPTION_FROM_IP;
+ break;
+ case 0x1DE:
+ regNum = MISCREG_LAST_EXCEPTION_TO_IP;
+ break;
+ case 0x200:
+ regNum = MISCREG_MTRR_PHYS_BASE_0;
+ break;
+ case 0x201:
+ regNum = MISCREG_MTRR_PHYS_MASK_0;
+ break;
+ case 0x202:
+ regNum = MISCREG_MTRR_PHYS_BASE_1;
+ break;
+ case 0x203:
+ regNum = MISCREG_MTRR_PHYS_MASK_1;
+ break;
+ case 0x204:
+ regNum = MISCREG_MTRR_PHYS_BASE_2;
+ break;
+ case 0x205:
+ regNum = MISCREG_MTRR_PHYS_MASK_2;
+ break;
+ case 0x206:
+ regNum = MISCREG_MTRR_PHYS_BASE_3;
+ break;
+ case 0x207:
+ regNum = MISCREG_MTRR_PHYS_MASK_3;
+ break;
+ case 0x208:
+ regNum = MISCREG_MTRR_PHYS_BASE_4;
+ break;
+ case 0x209:
+ regNum = MISCREG_MTRR_PHYS_MASK_4;
+ break;
+ case 0x20A:
+ regNum = MISCREG_MTRR_PHYS_BASE_5;
+ break;
+ case 0x20B:
+ regNum = MISCREG_MTRR_PHYS_MASK_5;
+ break;
+ case 0x20C:
+ regNum = MISCREG_MTRR_PHYS_BASE_6;
+ break;
+ case 0x20D:
+ regNum = MISCREG_MTRR_PHYS_MASK_6;
+ break;
+ case 0x20E:
+ regNum = MISCREG_MTRR_PHYS_BASE_7;
+ break;
+ case 0x20F:
+ regNum = MISCREG_MTRR_PHYS_MASK_7;
+ break;
+ case 0x250:
+ regNum = MISCREG_MTRR_FIX_64K_00000;
+ break;
+ case 0x258:
+ regNum = MISCREG_MTRR_FIX_16K_80000;
+ break;
+ case 0x259:
+ regNum = MISCREG_MTRR_FIX_16K_A0000;
+ break;
+ case 0x268:
+ regNum = MISCREG_MTRR_FIX_4K_C0000;
+ break;
+ case 0x269:
+ regNum = MISCREG_MTRR_FIX_4K_C8000;
+ break;
+ case 0x26A:
+ regNum = MISCREG_MTRR_FIX_4K_D0000;
+ break;
+ case 0x26B:
+ regNum = MISCREG_MTRR_FIX_4K_D8000;
+ break;
+ case 0x26C:
+ regNum = MISCREG_MTRR_FIX_4K_E0000;
+ break;
+ case 0x26D:
+ regNum = MISCREG_MTRR_FIX_4K_E8000;
+ break;
+ case 0x26E:
+ regNum = MISCREG_MTRR_FIX_4K_F0000;
+ break;
+ case 0x26F:
+ regNum = MISCREG_MTRR_FIX_4K_F8000;
+ break;
+ case 0x277:
+ regNum = MISCREG_PAT;
+ break;
+ case 0x2FF:
+ regNum = MISCREG_DEF_TYPE;
+ break;
+ case 0x400:
+ regNum = MISCREG_MC0_CTL;
+ break;
+ case 0x404:
+ regNum = MISCREG_MC1_CTL;
+ break;
+ case 0x408:
+ regNum = MISCREG_MC2_CTL;
+ break;
+ case 0x40C:
+ regNum = MISCREG_MC3_CTL;
+ break;
+ case 0x410:
+ regNum = MISCREG_MC4_CTL;
+ break;
+ case 0x401:
+ regNum = MISCREG_MC0_STATUS;
+ break;
+ case 0x405:
+ regNum = MISCREG_MC1_STATUS;
+ break;
+ case 0x409:
+ regNum = MISCREG_MC2_STATUS;
+ break;
+ case 0x40D:
+ regNum = MISCREG_MC3_STATUS;
+ break;
+ case 0x411:
+ regNum = MISCREG_MC4_STATUS;
+ break;
+ case 0x402:
+ regNum = MISCREG_MC0_ADDR;
+ break;
+ case 0x406:
+ regNum = MISCREG_MC1_ADDR;
+ break;
+ case 0x40A:
+ regNum = MISCREG_MC2_ADDR;
+ break;
+ case 0x40E:
+ regNum = MISCREG_MC3_ADDR;
+ break;
+ case 0x412:
+ regNum = MISCREG_MC4_ADDR;
+ break;
+ case 0x403:
+ regNum = MISCREG_MC0_MISC;
+ break;
+ case 0x407:
+ regNum = MISCREG_MC1_MISC;
+ break;
+ case 0x40B:
+ regNum = MISCREG_MC2_MISC;
+ break;
+ case 0x40F:
+ regNum = MISCREG_MC3_MISC;
+ break;
+ case 0x413:
+ regNum = MISCREG_MC4_MISC;
+ break;
+ case 0xC0000080:
+ regNum = MISCREG_EFER;
+ break;
+ case 0xC0000081:
+ regNum = MISCREG_STAR;
+ break;
+ case 0xC0000082:
+ regNum = MISCREG_LSTAR;
+ break;
+ case 0xC0000083:
+ regNum = MISCREG_CSTAR;
+ break;
+ case 0xC0000084:
+ regNum = MISCREG_SF_MASK;
+ break;
+ case 0xC0000100:
+ regNum = MISCREG_FS_BASE;
+ break;
+ case 0xC0000101:
+ regNum = MISCREG_GS_BASE;
+ break;
+ case 0xC0000102:
+ regNum = MISCREG_KERNEL_GS_BASE;
+ break;
+ case 0xC0000103:
+ regNum = MISCREG_TSC_AUX;
+ break;
+ case 0xC0010000:
+ regNum = MISCREG_PERF_EVT_SEL0;
+ break;
+ case 0xC0010001:
+ regNum = MISCREG_PERF_EVT_SEL1;
+ break;
+ case 0xC0010002:
+ regNum = MISCREG_PERF_EVT_SEL2;
+ break;
+ case 0xC0010003:
+ regNum = MISCREG_PERF_EVT_SEL3;
+ break;
+ case 0xC0010004:
+ regNum = MISCREG_PERF_EVT_CTR0;
+ break;
+ case 0xC0010005:
+ regNum = MISCREG_PERF_EVT_CTR1;
+ break;
+ case 0xC0010006:
+ regNum = MISCREG_PERF_EVT_CTR2;
+ break;
+ case 0xC0010007:
+ regNum = MISCREG_PERF_EVT_CTR3;
+ break;
+ case 0xC0010010:
+ regNum = MISCREG_SYSCFG;
+ break;
+ case 0xC0010016:
+ regNum = MISCREG_IORR_BASE0;
+ break;
+ case 0xC0010017:
+ regNum = MISCREG_IORR_BASE1;
+ break;
+ case 0xC0010018:
+ regNum = MISCREG_IORR_MASK0;
+ break;
+ case 0xC0010019:
+ regNum = MISCREG_IORR_MASK1;
+ break;
+ case 0xC001001A:
+ regNum = MISCREG_TOP_MEM;
+ break;
+ case 0xC001001D:
+ regNum = MISCREG_TOP_MEM2;
+ break;
+ case 0xC0010114:
+ regNum = MISCREG_VM_CR;
+ break;
+ case 0xC0010115:
+ regNum = MISCREG_IGNNE;
+ break;
+ case 0xC0010116:
+ regNum = MISCREG_SMM_CTL;
+ break;
+ case 0xC0010117:
+ regNum = MISCREG_VM_HSAVE_PA;
+ break;
+ default:
+ return new GeneralProtection(0);
+ }
+ //The index is multiplied by the size of a MiscReg so that
+ //any memory dependence calculations will not see these as
+ //overlapping.
+ req->setPaddr(regNum * sizeof(MiscReg));
+ return NoFault;
+ } else {
+ panic("Access to unrecognized internal address space %#x.\n",
+ prefix);
+ }
+ }
// Get cr0. This will tell us how to do translation. We'll assume it was
// verified to be correct and consistent when set.
diff --git a/src/arch/x86/x86_traits.hh b/src/arch/x86/x86_traits.hh
index 33ec13372..beb1898ce 100644
--- a/src/arch/x86/x86_traits.hh
+++ b/src/arch/x86/x86_traits.hh
@@ -55,6 +55,8 @@
* Authors: Gabe Black
*/
+#include "sim/host.hh"
+
#ifndef __ARCH_X86_X86TRAITS_HH__
#define __ARCH_X86_X86TRAITS_HH__
@@ -80,6 +82,10 @@ namespace X86ISA
const int NumSegments = 6;
const int NumSysSegments = 4;
+
+ const Addr IntAddrPrefixMask = ULL(0xffffffff00000000);
+ const Addr IntAddrPrefixCPUID = ULL(0x100000000);
+ const Addr IntAddrPrefixMSR = ULL(0x200000000);
}
#endif //__ARCH_X86_X86TRAITS_HH__
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 06:08:43 +0000