X86: Make cpuid actually consider the eax parameter and return different values.
--HG-- extra : convert_revision : 527c1cacdd20ab162859bba7f9a6bed33afa2d4f
This commit is contained in:
Gabe Black
parent
9c99f5f825
commit
03880cf828
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@ -55,15 +55,351 @@
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microcode = '''
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def macroop CPUID_R {
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#
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# For now, the CPUID function number will be hard wired to 0x8000_0000.
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# Getting it to work more robustly will likely require microcode branching
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# which probably doesn't work at the moment.
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#
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#
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# Find which type of cpuid function it is by checking bit 31. Also clear that
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# bit to form an offset into the functions of that type.
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#
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limm t1, 0x80000000, dataSize=4
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and t2, t1, rax, flags=(EZF,)
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# clear the bit
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xor t1, t2, rax
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#
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# Do range checking on the offset
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#
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# If EZF is set, the function is standard and the max is 0x1.
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movi t2, t2, 0x1, flags=(CEZF,)
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# If EZF is cleared, the function is extended and the max is 0x18.
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movi t2, t2, 0x18, flags=(nCEZF,)
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subi t0, t1, t2, flags=(ECF,)
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# ECF will be set if the offset is too large.
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bri t0, label("end"), flags=(CECF,)
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#
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# Jump to the right portion
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#
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movi t2, t2, label("standardStart"), flags=(CEZF,)
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movi t2, t2, label("extendedStart"), flags=(nCEZF,)
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# This gives each function 8 microops to use. It's wasteful because only
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# 5 will be needed, but a multiply would be expensive. In the system
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# described in the RISC86 patent, the fifth instruction would really be
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# the sequencing field on an op quad, so each function would be implemented
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# by -exactly- one op quad. Since we're approximating, this should be ok.
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slli t1, t1, 3
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br t2, t1
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#############################################################################
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#############################################################################
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#
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# Standard functions.
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#
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# 0x00000000 -- Processor Vendor and Largest Standard Function Number
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standardStart: limm rax, 0x00000001, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x00000001 -- Family, Model, Stepping Identifiers
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limm rax, 0x00020f51, dataSize=4
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limm rbx, 0x00000405, dataSize=4
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limm rdx, 0xe3d3fbff, dataSize=4
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limm rcx, 0x00000001, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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#
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# Extended functions.
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#
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# 0x80000000 -- Processor Vendor and Largest Extended Function Number
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extendedStart: limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000001 -- EAX: AMD Family, Model, Stepping
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# EBX: BrandId Identifier
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# ECX: Feature Identifiers
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# EDX: Feature Identifiers
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000002 -- Processor Name String Identifier
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000003 -- Processor Name String Identifier
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000004 -- Processor Name String Identifier
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000005 -- L1 Cache and TLB Identifiers
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000006 -- L2/L3 Cache and L2 TLB Identifiers
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000007 -- Advanced Power Management Information
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000008 -- Long Mode Address Size Identification
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000009 -- Reserved
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x8000000A -- SVM Revision and Feature Identification
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x8000000B -- Reserved
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x8000000C -- Reserved
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x8000000D -- Reserved
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x8000000E -- Reserved
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x8000000F -- Reserved
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000010 -- Reserved
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000011 -- Reserved
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000012 -- Reserved
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000013 -- Reserved
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000014 -- Reserved
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000015 -- Reserved
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000016 -- Reserved
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000017 -- Reserved
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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# 0x80000018 -- Reserved
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# JUNK VALUES
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limm rax, 0x80000018, dataSize=4
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limm rbx, 0x68747541, dataSize=4
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limm rdx, 0x69746e65, dataSize=4
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limm rcx, 0x444d4163, dataSize=4
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bri t0, label("end")
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fault "NoFault"
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fault "NoFault"
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fault "NoFault"
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end: fault "NoFault"
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};
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'''
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@ -125,5 +125,10 @@ let {{
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env.dataSize = 8;
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'''
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def labeler(labelStr):
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return "label_%s" % labelStr
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assembler.symbols["label"] = labeler
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macroopDict = assembler.assemble(microcode)
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}};
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