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-rw-r--r--src/arch/x86/isa/insts/processor_information.py346
-rw-r--r--src/arch/x86/isa/microasm.isa5
2 files changed, 346 insertions, 5 deletions
diff --git a/src/arch/x86/isa/insts/processor_information.py b/src/arch/x86/isa/insts/processor_information.py
index 48891cd84..f57bed494 100644
--- a/src/arch/x86/isa/insts/processor_information.py
+++ b/src/arch/x86/isa/insts/processor_information.py
@@ -55,15 +55,351 @@
microcode = '''
def macroop CPUID_R {
- #
- # For now, the CPUID function number will be hard wired to 0x8000_0000.
- # Getting it to work more robustly will likely require microcode branching
- # which probably doesn't work at the moment.
- #
+#
+# Find which type of cpuid function it is by checking bit 31. Also clear that
+# bit to form an offset into the functions of that type.
+#
+ limm t1, 0x80000000, dataSize=4
+ and t2, t1, rax, flags=(EZF,)
+ # clear the bit
+ xor t1, t2, rax
+
+#
+# Do range checking on the offset
+#
+ # If EZF is set, the function is standard and the max is 0x1.
+ movi t2, t2, 0x1, flags=(CEZF,)
+ # If EZF is cleared, the function is extended and the max is 0x18.
+ movi t2, t2, 0x18, flags=(nCEZF,)
+ subi t0, t1, t2, flags=(ECF,)
+ # ECF will be set if the offset is too large.
+ bri t0, label("end"), flags=(CECF,)
+
+
+#
+# Jump to the right portion
+#
+ movi t2, t2, label("standardStart"), flags=(CEZF,)
+ movi t2, t2, label("extendedStart"), flags=(nCEZF,)
+ # This gives each function 8 microops to use. It's wasteful because only
+ # 5 will be needed, but a multiply would be expensive. In the system
+ # described in the RISC86 patent, the fifth instruction would really be
+ # the sequencing field on an op quad, so each function would be implemented
+ # by -exactly- one op quad. Since we're approximating, this should be ok.
+ slli t1, t1, 3
+ br t2, t1
+
+#############################################################################
+#############################################################################
+
+#
+# Standard functions.
+#
+
+
+# 0x00000000 -- Processor Vendor and Largest Standard Function Number
+standardStart: limm rax, 0x00000001, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x00000001 -- Family, Model, Stepping Identifiers
+ limm rax, 0x00020f51, dataSize=4
+ limm rbx, 0x00000405, dataSize=4
+ limm rdx, 0xe3d3fbff, dataSize=4
+ limm rcx, 0x00000001, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+#
+# Extended functions.
+#
+
+# 0x80000000 -- Processor Vendor and Largest Extended Function Number
+
+extendedStart: limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000001 -- EAX: AMD Family, Model, Stepping
+# EBX: BrandId Identifier
+# ECX: Feature Identifiers
+# EDX: Feature Identifiers
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000002 -- Processor Name String Identifier
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000003 -- Processor Name String Identifier
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000004 -- Processor Name String Identifier
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000005 -- L1 Cache and TLB Identifiers
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000006 -- L2/L3 Cache and L2 TLB Identifiers
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000007 -- Advanced Power Management Information
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000008 -- Long Mode Address Size Identification
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000009 -- Reserved
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x8000000A -- SVM Revision and Feature Identification
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x8000000B -- Reserved
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x8000000C -- Reserved
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x8000000D -- Reserved
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x8000000E -- Reserved
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x8000000F -- Reserved
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000010 -- Reserved
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000011 -- Reserved
+ # JUNK VALUES
limm rax, 0x80000018, dataSize=4
limm rbx, 0x68747541, dataSize=4
limm rdx, 0x69746e65, dataSize=4
limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000012 -- Reserved
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000013 -- Reserved
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000014 -- Reserved
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000015 -- Reserved
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000016 -- Reserved
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000017 -- Reserved
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+# 0x80000018 -- Reserved
+ # JUNK VALUES
+ limm rax, 0x80000018, dataSize=4
+ limm rbx, 0x68747541, dataSize=4
+ limm rdx, 0x69746e65, dataSize=4
+ limm rcx, 0x444d4163, dataSize=4
+ bri t0, label("end")
+ fault "NoFault"
+ fault "NoFault"
+ fault "NoFault"
+
+end: fault "NoFault"
};
'''
diff --git a/src/arch/x86/isa/microasm.isa b/src/arch/x86/isa/microasm.isa
index af3148631..929fd0075 100644
--- a/src/arch/x86/isa/microasm.isa
+++ b/src/arch/x86/isa/microasm.isa
@@ -125,5 +125,10 @@ let {{
env.dataSize = 8;
'''
+ def labeler(labelStr):
+ return "label_%s" % labelStr
+
+ assembler.symbols["label"] = labeler
+
macroopDict = assembler.assemble(microcode)
}};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 02:41:26 +0000