Add X86 disassembler support for RDFSBASE, RDGSBASE, WRFSBASE, and WRGSBASE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141358 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86InstrSystem.td b/lib/Target/X86/X86InstrSystem.td
index 6c880ed..05a5b36 100644
--- a/lib/Target/X86/X86InstrSystem.td
+++ b/lib/Target/X86/X86InstrSystem.td
@@ -400,6 +400,8 @@
def INVD : I<0x08, RawFrm, (outs), (ins), "invd", []>, TB;
def WBINVD : I<0x09, RawFrm, (outs), (ins), "wbinvd", []>, TB;
+//===----------------------------------------------------------------------===//
+// XSAVE instructions
let Defs = [RDX, RAX], Uses = [RCX] in
def XGETBV : I<0x01, MRM_D0, (outs), (ins), "xgetbv", []>, TB;
@@ -442,3 +444,24 @@
}
let Defs = [RAX, RDX, RSI], Uses = [RAX, RSI] in
def MONTMUL : I<0xc0, RawFrm, (outs), (ins), "montmul", []>, A6;
+
+//===----------------------------------------------------------------------===//
+// FS/GS Base Instructions
+let Predicates = [In64BitMode] in {
+ def RDFSBASE : I<0xAE, MRM0r, (outs GR32:$dst), (ins),
+ "rdfsbase{l}\t$dst", []>, TB, XS;
+ def RDFSBASE64 : RI<0xAE, MRM0r, (outs GR64:$dst), (ins),
+ "rdfsbase{q}\t$dst", []>, TB, XS;
+ def RDGSBASE : I<0xAE, MRM1r, (outs GR32:$dst), (ins),
+ "rdgsbase{l}\t$dst", []>, TB, XS;
+ def RDGSBASE64 : RI<0xAE, MRM1r, (outs GR64:$dst), (ins),
+ "rdgsbase{q}\t$dst", []>, TB, XS;
+ def WRFSBASE : I<0xAE, MRM2r, (outs), (ins GR32:$dst),
+ "wrfsbase{l}\t$dst", []>, TB, XS;
+ def WRFSBASE64 : RI<0xAE, MRM2r, (outs), (ins GR64:$dst),
+ "wrfsbase{q}\t$dst", []>, TB, XS;
+ def WRGSBASE : I<0xAE, MRM3r, (outs), (ins GR32:$dst),
+ "wrgsbase{l}\t$dst", []>, TB, XS;
+ def WRGSBASE64 : RI<0xAE, MRM3r, (outs), (ins GR64:$dst),
+ "wrgsbase{q}\t$dst", []>, TB, XS;
+}
diff --git a/test/MC/Disassembler/X86/simple-tests.txt b/test/MC/Disassembler/X86/simple-tests.txt
index 34d25ca..39e641b 100644
--- a/test/MC/Disassembler/X86/simple-tests.txt
+++ b/test/MC/Disassembler/X86/simple-tests.txt
@@ -431,3 +431,27 @@
# CHECK: xsaveopt (%rax)
0x0f 0xae 0x30
+
+# CHECK rdfsbasel %eax
+0xf3 0x0f 0xae 0xc0
+
+# CHECK rdgsbasel %eax
+0xf3 0x0f 0xae 0xc8
+
+# CHECK wrfsbasel %eax
+0xf3 0x0f 0xae 0xd0
+
+# CHECK wrgsbasel %eax
+0xf3 0x0f 0xae 0xd8
+
+# CHECK rdfsbaseq %rax
+0xf3 0x48 0x0f 0xae 0xc0
+
+# CHECK rdgsbaseq %rax
+0xf3 0x48 0x0f 0xae 0xc8
+
+# CHECK wrfsbaseq %rax
+0xf3 0x48 0x0f 0xae 0xd0
+
+# CHECK wrgsbaseq %rax
+0xf3 0x48 0x0f 0xae 0xd8
