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Add support for the x86 instructions "pusha" and "popa".

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106671 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nico Weber 2010-06-23 20:00:58 +00:00
parent 81cd7ffe45
commit 50b9efc2a8
3 changed files with 32 additions and 0 deletions
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11
lib/Target/X86/X86InstrInfo.td
View File

@ -820,6 +820,17 @@ def PUSHF32 : I<0x9C, RawFrm, (outs), (ins), "pushf{l|d}", []>,
Requires<[In32BitMode]>;
}
let Defs = [EDI, ESI, EBP, EBX, EDX, ECX, EAX, ESP], Uses = [ESP],
mayLoad=1, neverHasSideEffects=1 in {
def POPA32 : I<0x61, RawFrm, (outs), (ins), "popa{l}", []>,
Requires<[In32BitMode]>;
}
let Defs = [ESP], Uses = [EDI, ESI, EBP, EBX, EDX, ECX, EAX, ESP],
mayStore=1, neverHasSideEffects=1 in {
def PUSHA32 : I<0x60, RawFrm, (outs), (ins), "pusha{l}", []>,
Requires<[In32BitMode]>;
}
let Uses = [EFLAGS], Constraints = "$src = $dst" in // GR32 = bswap GR32
def BSWAP32r : I<0xC8, AddRegFrm,
(outs GR32:$dst), (ins GR32:$src),

17
test/MC/AsmParser/X86/x86_32-new-encoder.s
View File

@ -398,3 +398,20 @@ retl
// CHECK: [0x65,0x8b,0x05,0x7c,0x00,0x00,0x00]
// FIXME: This is a correct bug poor encoding: Use 65 a1 7c 00 00 00
movl %gs:124, %eax
// CHECK: pusha
// CHECK: encoding: [0x60]
pusha
// CHECK: popa
// CHECK: encoding: [0x61]
popa
// CHECK: pushal
// CHECK: encoding: [0x60]
pushal
// CHECK: popal
// CHECK: encoding: [0x61]
popal

4
utils/TableGen/EDEmitter.cpp
View File

@ -500,6 +500,8 @@ static void X86ExtractSemantics(
// TODO add support for fixed operands
} else if (name.find("F") != name.npos) {
// ignore (this pushes onto the FP stack)
} else if (name.find("A") != name.npos) {
// ignore (pushes all GP registoers onto the stack)
} else if (name[name.length() - 1] == 'm') {
PUSH("src");
} else if (name.find("i") != name.npos) {
@ -518,6 +520,8 @@ static void X86ExtractSemantics(
// TODO add support for fixed operands
} else if (name.find("F") != name.npos) {
// ignore (this pops from the FP stack)
} else if (name.find("A") != name.npos) {
// ignore (pushes all GP registoers onto the stack)
} else if (name[name.length() - 1] == 'm') {
POP("dst");
} else {