forked from OSchip/llvm-project
[x86] Add PUSHA16,POPA16 instructions, and fix aliases for 16-bit mode
llvm-svn: 198753
This commit is contained in:
David Woodhouse
parent
956965ca69
commit
13574a7517
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@ -974,13 +974,17 @@ def PUSHF64 : I<0x9C, RawFrm, (outs), (ins), "pushfq", [], IIC_PUSH_F>,
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let Defs = [EDI, ESI, EBP, EBX, EDX, ECX, EAX, ESP], Uses = [ESP],
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mayLoad = 1, neverHasSideEffects = 1, SchedRW = [WriteLoad] in {
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def POPA32 : I<0x61, RawFrm, (outs), (ins), "popa{l}", [], IIC_POP_A>,
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def POPA32 : I<0x61, RawFrm, (outs), (ins), "popal", [], IIC_POP_A>,
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OpSize16, Requires<[Not64BitMode]>;
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def POPA16 : I<0x61, RawFrm, (outs), (ins), "popaw", [], IIC_POP_A>,
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OpSize, Requires<[Not64BitMode]>;
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}
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let Defs = [ESP], Uses = [EDI, ESI, EBP, EBX, EDX, ECX, EAX, ESP],
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mayStore = 1, neverHasSideEffects = 1, SchedRW = [WriteStore] in {
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def PUSHA32 : I<0x60, RawFrm, (outs), (ins), "pusha{l}", [], IIC_PUSH_A>,
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def PUSHA32 : I<0x60, RawFrm, (outs), (ins), "pushal", [], IIC_PUSH_A>,
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OpSize16, Requires<[Not64BitMode]>;
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def PUSHA16 : I<0x60, RawFrm, (outs), (ins), "pushaw", [], IIC_PUSH_A>,
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OpSize, Requires<[Not64BitMode]>;
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}
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let Constraints = "$src = $dst", SchedRW = [WriteALU] in {
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@ -2143,23 +2147,36 @@ def : MnemonicAlias<"leaveq", "leave", "att">, Requires<[In64BitMode]>;
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def : MnemonicAlias<"loopz", "loope", "att">;
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def : MnemonicAlias<"loopnz", "loopne", "att">;
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def : MnemonicAlias<"pop", "popl", "att">, Requires<[Not64BitMode]>;
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def : MnemonicAlias<"pop", "popw", "att">, Requires<[In16BitMode]>;
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def : MnemonicAlias<"pop", "popl", "att">, Requires<[In32BitMode]>;
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def : MnemonicAlias<"pop", "popq", "att">, Requires<[In64BitMode]>;
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def : MnemonicAlias<"popf", "popfl", "att">, Requires<[Not64BitMode]>;
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def : MnemonicAlias<"popf", "popfw", "att">, Requires<[In16BitMode]>;
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def : MnemonicAlias<"popf", "popfl", "att">, Requires<[In32BitMode]>;
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def : MnemonicAlias<"popf", "popfq", "att">, Requires<[In64BitMode]>;
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def : MnemonicAlias<"popfd", "popfl", "att">;
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// FIXME: This is wrong for "push reg". "push %bx" should turn into pushw in
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// all modes. However: "push (addr)" and "push $42" should default to
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// pushl/pushq depending on the current mode. Similar for "pop %bx"
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def : MnemonicAlias<"push", "pushl", "att">, Requires<[Not64BitMode]>;
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def : MnemonicAlias<"push", "pushw", "att">, Requires<[In16BitMode]>;
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def : MnemonicAlias<"push", "pushl", "att">, Requires<[In32BitMode]>;
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def : MnemonicAlias<"push", "pushq", "att">, Requires<[In64BitMode]>;
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def : MnemonicAlias<"pushf", "pushfl", "att">, Requires<[Not64BitMode]>;
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def : MnemonicAlias<"pushf", "pushfw", "att">, Requires<[In16BitMode]>;
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def : MnemonicAlias<"pushf", "pushfl", "att">, Requires<[In32BitMode]>;
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def : MnemonicAlias<"pushf", "pushfq", "att">, Requires<[In64BitMode]>;
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def : MnemonicAlias<"pushfd", "pushfl", "att">;
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def : MnemonicAlias<"popad", "popa", "intel">, Requires<[Not64BitMode]>;
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def : MnemonicAlias<"pushad", "pusha", "intel">, Requires<[Not64BitMode]>;
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def : MnemonicAlias<"popad", "popal", "intel">, Requires<[Not64BitMode]>;
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def : MnemonicAlias<"pushad", "pushal", "intel">, Requires<[Not64BitMode]>;
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def : MnemonicAlias<"popa", "popaw", "intel">, Requires<[In16BitMode]>;
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def : MnemonicAlias<"pusha", "pushaw", "intel">, Requires<[In16BitMode]>;
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def : MnemonicAlias<"popa", "popal", "intel">, Requires<[In32BitMode]>;
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def : MnemonicAlias<"pusha", "pushal", "intel">, Requires<[In32BitMode]>;
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def : MnemonicAlias<"popa", "popaw", "att">, Requires<[In16BitMode]>;
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def : MnemonicAlias<"pusha", "pushaw", "att">, Requires<[In16BitMode]>;
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def : MnemonicAlias<"popa", "popal", "att">, Requires<[In32BitMode]>;
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def : MnemonicAlias<"pusha", "pushal", "att">, Requires<[In32BitMode]>;
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def : MnemonicAlias<"repe", "rep", "att">;
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def : MnemonicAlias<"repz", "rep", "att">;
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@ -62,8 +62,12 @@ int $255
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// CHECK: int $255
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// CHECK: encoding: [0xcd,0xff]
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// CHECK: pushfw # encoding: [0x9c]
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pushf
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// CHECK: pushfl # encoding: [0x66,0x9c]
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pushfl
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// CHECK: popfw # encoding: [0x9d]
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popf
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// CHECK: popfl # encoding: [0x66,0x9d]
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popfl
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@ -311,6 +315,22 @@ cmovnae %bx,%bx
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// CHECK: encoding: [0x9b]
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fwait
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// CHECK: pusha
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// CHECK: encoding: [0x60]
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pusha
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// CHECK: popa
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// CHECK: encoding: [0x61]
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popa
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// CHECK: pushaw
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// CHECK: encoding: [0x60]
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pushaw
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// CHECK: popaw
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// CHECK: encoding: [0x61]
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popaw
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// CHECK: pushal
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// CHECK: encoding: [0x66,0x60]
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pushal
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@ -341,6 +361,25 @@ testl -24(%ebp), %ecx
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// CHECK: testl -24(%ebp), %ecx
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push %cs
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// CHECK: pushw %cs
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// CHECK: encoding: [0x0e]
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push %ds
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// CHECK: pushw %ds
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// CHECK: encoding: [0x1e]
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push %ss
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// CHECK: pushw %ss
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// CHECK: encoding: [0x16]
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push %es
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// CHECK: pushw %es
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// CHECK: encoding: [0x06]
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push %fs
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// CHECK: pushw %fs
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// CHECK: encoding: [0x0f,0xa0]
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push %gs
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// CHECK: pushw %gs
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// CHECK: encoding: [0x0f,0xa8]
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pushw %cs
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// CHECK: pushw %cs
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// CHECK: encoding: [0x0e]
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@ -379,6 +418,16 @@ pushl %gs
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// CHECK: pushl %gs
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// CHECK: encoding: [0x66,0x0f,0xa8]
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pop %ss
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// CHECK: popw %ss
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// CHECK: encoding: [0x17]
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pop %ds
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// CHECK: popw %ds
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// CHECK: encoding: [0x1f]
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pop %es
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// CHECK: popw %es
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// CHECK: encoding: [0x07]
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popl %ss
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// CHECK: popl %ss
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// CHECK: encoding: [0x66,0x17]
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@ -442,14 +442,22 @@ cmovnae %bx,%bx
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// FIXME: This is a correct bug poor encoding: Use 65 a1 7c 00 00 00
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movl %gs:124, %eax
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// CHECK: pusha
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// CHECK: pushal
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// CHECK: encoding: [0x60]
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pusha
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// CHECK: popa
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// CHECK: popal
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// CHECK: encoding: [0x61]
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popa
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// CHECK: pushaw
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// CHECK: encoding: [0x66,0x60]
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pushaw
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// CHECK: popaw
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// CHECK: encoding: [0x66,0x61]
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popaw
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// CHECK: pushal
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// CHECK: encoding: [0x60]
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pushal
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