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Add the following functions:

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- 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.

llvm-svn: 76528
This commit is contained in:
Bill Wendling 2009-07-21 01:07:24 +00:00
parent f2c6e6a1bd
commit 50e5f4884a
1 changed files with 12 additions and 0 deletions
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12
lib/Target/X86/X86Instr64bit.td
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@ -245,6 +245,18 @@ let Defs = [RCX,RDI], Uses = [RAX,RCX,RDI] in
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...
//