From d6d06b2f1a4c08220cdc0766ee0fbf143857eeca Mon Sep 17 00:00:00 2001
From: TermiNexus <wyt18222152539wyt@163.com>
Date: Thu, 27 Aug 2026 01:16:53 +0800
Subject: [PATCH] =?UTF-8?q?fix(asm):=20inb/inw/inl=20=E6=98=BE=E5=BC=8F=20?=
 =?UTF-8?q?mov=20=E5=88=B0=E8=BE=93=E5=87=BA=E5=AF=84=E5=AD=98=E5=99=A8?=
 =?UTF-8?q?=E2=80=94=E2=80=94=E5=8A=A0=20CLOBBER=5FRAX=20=E5=90=8E=20LLVM?=
 =?UTF-8?q?=20=E4=B8=8D=E5=86=8D=E6=8A=8A=20value=20=E7=BB=91=20RAX?=
 =?UTF-8?q?=EF=BC=8C=E5=8E=9F=E5=86=99=E6=B3=95=E8=AF=BB=E5=88=B0=20asm=20?=
 =?UTF-8?q?=E5=89=8D=E6=AE=8B=E7=95=99=E5=AF=BC=E8=87=B4=20waitReady=20err?=
 =?UTF-8?q?=3D8=EF=BC=88status=200x50=20=E8=A2=AB=E8=AF=BB=E6=88=90?=
 =?UTF-8?q?=E5=90=AB=20DF=EF=BC=89=EF=BC=9B=E6=8C=89=20mm.vp=20=E6=A8=A1?=
 =?UTF-8?q?=E5=BC=8F=20asm=20=E5=86=85=20mov=20{AsmOut},=20eax?=
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---
 asm.vp | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/asm.vp b/asm.vp
index f1b0f4c..ae55d66 100644
--- a/asm.vp
+++ b/asm.vp
@@ -18,9 +18,13 @@ def pause():
 
 def inb(port: t.CUInt16T) -> t.CUInt8T:
     value: t.CUInt32T
+    # 显式 mov 到输出寄存器：EAX 作临时（CLOBBER_RAX 声明），避免
+    # AsmOut 分配到非 RAX 时读到 asm 前残留（加 CLOBBER_RAX 后 LLVM
+    # 不再把 value 绑到 RAX，需 asm 内显式存值）。
     c.Asm(f"""mov edx, {c.AsmInp(t.CUInt32T(port), t.ASM_DESCR.REG_ANY)}
               in al, dx
-              movzx eax, al""",
+              movzx eax, al
+              mov {c.AsmOut(value, t.ASM_DESCR.OUTPUT_REG)}, eax""",
     out = [c.AsmOut(value, t.ASM_DESCR.OUTPUT_REG)],
     op =[t.ASM_DESCR.CLOBBER_RDX, t.ASM_DESCR.CLOBBER_RAX])
     return t.CUInt8T(value)
@@ -36,7 +40,8 @@ def inw(port: t.CUInt16T) -> t.CUInt16T:
     value: t.CUInt32T
     c.Asm(f"""mov edx, {c.AsmInp(t.CUInt32T(port), t.ASM_DESCR.REG_ANY)}
               in ax, dx
-              movzx eax, ax""",
+              movzx eax, ax
+              mov {c.AsmOut(value, t.ASM_DESCR.OUTPUT_REG)}, eax""",
     out = [c.AsmOut(value, t.ASM_DESCR.OUTPUT_REG)],
     op =[t.ASM_DESCR.CLOBBER_RDX, t.ASM_DESCR.CLOBBER_RAX])
     return t.CUInt16T(value)
@@ -50,7 +55,8 @@ def outw(port: t.CUInt16T, value: t.CUInt16T):
 def inl(port: t.CUInt16T) -> t.CUInt32T:
     value: t.CUInt32T
     c.Asm(f"""mov edx, {c.AsmInp(t.CUInt32T(port), t.ASM_DESCR.REG_ANY)}
-              in eax, dx""",
+              in eax, dx
+              mov {c.AsmOut(value, t.ASM_DESCR.OUTPUT_REG)}, eax""",
     out = [c.AsmOut(value, t.ASM_DESCR.OUTPUT_REG)],
     op =[t.ASM_DESCR.CLOBBER_RDX, t.ASM_DESCR.CLOBBER_RAX])
     return value