[llvm-commits] [llvm] r76528 - /llvm/trunk/lib/Target/X86/X86Instr64bit.td

[Bill Wendling]

Author: void
Date: Mon Jul 20 20:07:24 2009
New Revision: 76528

URL: http://llvm.org/viewvc/llvm-project?rev=76528&view=rev
Log:
Add the following functions:

- SYSCALL (normal fast system call instruction) [0f 05]
- SYSENTER (system call entry instruction) [0f 34]
- SYSEXIT (system call exit instruction) [0f 35]
- SYSEXIT64 (system call exit instruction to 64-bit user code) [REX.W 0f 35]
- SYSRET (system call return instruction) [0f 07]

Patch by Sean Callanan.

Modified:
    llvm/trunk/lib/Target/X86/X86Instr64bit.td

Modified: llvm/trunk/lib/Target/X86/X86Instr64bit.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86Instr64bit.td?rev=76528&r1=76527&r2=76528&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/X86Instr64bit.td (original)
+++ llvm/trunk/lib/Target/X86/X86Instr64bit.td Mon Jul 20 20:07:24 2009
@@ -245,6 +245,18 @@
 def REP_STOSQ : RI<0xAB, RawFrm, (outs), (ins), "{rep;stosq|rep stosq}",
                    [(X86rep_stos i64)]>, REP;
 
+// Fast system-call instructions
+def SYSCALL  : I<0x05, RawFrm,
+                 (outs), (ins), "syscall", []>, TB;
+def SYSENTER  : I<0x34, RawFrm,
+                  (outs), (ins), "sysenter", []>, TB;
+def SYSEXIT : I<0x35, RawFrm,
+                (outs), (ins), "sysexit", []>, TB;
+def SYSEXIT64 : RI<0x35, RawFrm,
+                   (outs), (ins), "sysexit", []>, TB;
+def SYSRET : I<0x07, RawFrm,
+               (outs), (ins), "sysret", []>, TB;
+
 //===----------------------------------------------------------------------===//
 //  Move Instructions...
 //