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Change the sysexit mnemonic (and sysexitl) to never have the REX.W prefix and

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not depend on In32BitMode.  Use the sysexitq mnemonic for the version with the
REX.W prefix and only allow it only In64BitMode.  rdar://9738584


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143112 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kevin Enderby 2011-10-27 17:40:41 +00:00
parent 88484c0030
commit 55c4127134
5 changed files with 24 additions and 3 deletions
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1
lib/Target/X86/X86InstrInfo.td
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@ -1573,6 +1573,7 @@ def : MnemonicAlias<"verrw", "verr">;
// System instruction aliases.
def : MnemonicAlias<"iret", "iretl">;
def : MnemonicAlias<"sysret", "sysretl">;
def : MnemonicAlias<"sysexit", "sysexitl">;
def : MnemonicAlias<"lgdtl", "lgdt">, Requires<[In32BitMode]>;
def : MnemonicAlias<"lgdtq", "lgdt">, Requires<[In64BitMode]>;

5
lib/Target/X86/X86InstrSystem.td
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@ -51,9 +51,8 @@ def SYSRETQ :RI<0x07, RawFrm, (outs), (ins), "sysretq", []>, TB,
def SYSENTER : I<0x34, RawFrm, (outs), (ins), "sysenter", []>, TB;
def SYSEXIT : I<0x35, RawFrm, (outs), (ins), "sysexit", []>, TB,
Requires<[In32BitMode]>;
def SYSEXIT64 :RI<0x35, RawFrm, (outs), (ins), "sysexit", []>, TB,
def SYSEXIT : I<0x35, RawFrm, (outs), (ins), "sysexitl", []>, TB;
def SYSEXIT64 :RI<0x35, RawFrm, (outs), (ins), "sysexitq", []>, TB,
Requires<[In64BitMode]>;
def IRET16 : I<0xcf, RawFrm, (outs), (ins), "iretw", []>, OpSize;

7
test/MC/X86/x86-32-coverage.s
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@ -500,6 +500,9 @@
// CHECK: sysexit
sysexit
// CHECK: sysexitl
sysexitl
// CHECK: ud2
ud2
@ -4417,6 +4420,10 @@
// CHECK: encoding: [0x0f,0x35]
sysexit
// CHECK: sysexitl
// CHECK: encoding: [0x0f,0x35]
sysexitl
// CHECK: fxsave 3735928559(%ebx,%ecx,8)
// CHECK: encoding: [0x0f,0xae,0x84,0xcb,0xef,0xbe,0xad,0xde]
fxsave 0xdeadbeef(%ebx,%ecx,8)

12
test/MC/X86/x86-64.s
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@ -1191,3 +1191,15 @@ xchgl %ecx, %eax
// CHECK: xchgl %ecx, %eax
// CHECK: encoding: [0x91]
xchgl %eax, %ecx
// CHECK: sysexit
// CHECK: encoding: [0x0f,0x35]
sysexit
// CHECK: sysexitl
// CHECK: encoding: [0x0f,0x35]
sysexitl
// CHECK: sysexitq
// CHECK: encoding: [0x48,0x0f,0x35]
sysexitq

2
test/MC/X86/x86_errors.s
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@ -18,3 +18,5 @@ addl $0, 0(%rax)
movl 0(%rax), 0(%edx) // error: invalid operand for instruction
// 32: error: instruction requires a CPU feature not currently enabled
sysexitq