📄 ntldr内存初始化、分配、操作及相关函数分析.mht
字号:
=
EFFFF=B5=C4=C4=DA=B4=E6=CA=C7=D6=F7=B0=E5=D6=B8=B6=A8=B5=C4,=BD=AB=BB=E1=B1=
=BB=B1=A8=B8=E6. <SPAN style=3D"DISPLAY: none">! Zd%p=14wB=1B=20
</SPAN> <BR>// =
=CB=F9=D3=D0=B5=C4=B5=CD=CE=BB=C4=DA=B4=E6=D7=F7=CE=AA=D5=FD=B3=A3=B5=C4=C4=
=DA=B4=E6=BD=AB=BB=E1=B1=BB=B1=A8=B8=E6,=B4=A6=C0=ED=CE=AA=B9=E6=B7=B6=B1=
=A3=C1=F4=B5=C4=B1=EA=D7=BCRAM=CA=C7OS=B5=C4=D4=F0=C8=CE,=C0=FD=C8=E7,=D6=
=D0=B6=CF//=20
=CF=F2=C1=BF=B1=ED(0:0)=D2=D4=BC=B0BIOS=CA=FD=BE=DD=C7=F8(40:0) =
<SPAN style=3D"DISPLAY: none">\ ]n@=07Z%T=16=20
</SPAN> <BR><SPAN style=3D"DISPLAY: none">=1DB=162=15=1D9^,R=20
</SPAN> <BR>// =B5=F7=D3=C3Int15E820()=BA=AF=CA=FD.<SPAN =
style=3D"DISPLAY: none"> =1D=20
=1C92rW/cR </SPAN> <BR>// =
=D4=DAInt15E820=BA=AF=CA=FD=D6=D0=A3=AC=BE=CD=CF=F3=C4=E3=BF=B4=B5=BD=B5=C4=
=A3=AC=C6=E4=B6=AF=D7=F7=BE=CD=CA=C7=B5=F7=D3=C3int 15=20
e820=C0=B4=BB=F1=C8=A1=C4=DA=B4=E6=B5=C4=C8=DD=C1=BF=A3=AC=D2=B2// =
=D0=ED=C4=E3=B2=BB=CA=C7=CC=AB=C1=CB=BD=E2=A3=AC=CE=D2=D4=DA=D5=E2=C0=EF=BC=
=F2=B5=A5=B5=C4=BD=E9=C9=DC=D2=BB=CF=C2=A3=BA<SPAN style=3D"DISPLAY: =
none"> -F=0E=08=08=1F=20
X-+ </SPAN> <BR> =
=20
// BIOS=B9=A6=C4=DC=B5=F7=D3=C3int15 =
=B9=A6=C4=DC=BA=C5e820=A3=BA<SPAN style=3D"DISPLAY: none"> c_3[i=20
L]=3Dr </SPAN> <BR> =
=20
// [=B4=AB=C8=EB=B2=CE=CA=FD]=A3=BA<SPAN =
style=3D"DISPLAY: none"> owBP{=056 =17d=20
</SPAN> <BR> =
=20
// eax: e820<SPAN style=3D"DISPLAY: none"> ki|gL{?=06]F=20
</SPAN> <BR> =
=20
// ebx: =
=B4=E6=B7=C5=A1=B0=BA=F3=D0=F8=D6=B5=A1=B1=A3=AC=B8=C3=D6=B5=CA=C7=CE=AA=C1=
=CB=B5=C3=B5=BD=CF=C2=D2=BB=BF=E9=CE=EF=C0=ED=C4=DA=B4=E6=B6=CE=A3=AC=CB=FB=
=D3=A6=B8=C3=D6=B8=B6=A8=C9=CF=D2=BB=B4=CE=B5=F7=D3=C3=B4=CB=B3=CC=D0=F2=B5=
=C4=B7=B5<SPAN=20
style=3D"DISPLAY: none"> #=1DKAssw#2K </SPAN> <BR>// =
=20
=
=BB=D8=D6=B5=A3=AC=C8=E7=B9=FB=CE=AA=B5=DA=D2=BB=B4=CE=B5=F7=D3=C3=A3=AC=D4=
=F2ebx=B1=D8=D0=EB=CE=AA0=A1=A3<SPAN style=3D"DISPLAY: none"> =
T\0DF5G=15^W=20
</SPAN> <BR> // =
es:di:=20
=
=BB=BA=B3=E5=C7=F8=D6=B8=D5=EB=A3=AC=D6=B8=CF=F2=A1=B0=B5=D8=D6=B7=B7=B6=CE=
=A7=C3=E8=CA=F6=B7=FB=A1=B1=BD=E1=B9=B9=A3=ACbios=BB=E1=CC=EE=B3=E4=B8=C3=
=BD=E1=B9=B9=A1=A3<SPAN style=3D"DISPLAY: none"> L<d,"6%;=01U=20
</SPAN> <BR> // ecx:=20
=
=BB=BA=B3=E5=C7=F8=BD=E1=B9=B9=B5=C4=B4=F3=D0=A1=A3=AC=D2=D4bytes=CE=AA=B5=
=A5=CE=BB=A1=A3<SPAN style=3D"DISPLAY: none"> 32%;=12=1A#}Y?=20
</SPAN> <BR> // edx:=20
=
=B1=EA=D6=BE=A1=B0SMAP=A1=B1=A3=ACBIOS=BB=E1=CA=B9=D3=C3=B8=C3=B1=EA=D6=BE=
=B6=D4=CF=B5=CD=B3=D3=B3=CF=F1=D0=C5=CF=A2=BD=F8=D0=D0=D0=A3=D1=E9=A1=A3<=
SPAN style=3D"DISPLAY: none"> =01 w7=1C=18S=13G:=20
</SPAN> <BR> // =
[=B7=B5=BB=D8=D6=B5]=A3=BA<SPAN=20
style=3D"DISPLAY: none"> pHm=05=18W=1FgE </SPAN> <BR> =
=20
// =
CF=A3=BA=C3=BB=D3=D0=BD=F8=CE=BB=B1=EA=D6=BE=C3=BB=D3=D0=B4=ED=CE=F3=A3=AC=
sbb ecx,ecx<SPAN=20
style=3D"DISPLAY: none"> =12@ c=12D=14Y|F </SPAN> <BR> =
=20
// =
=C6=E4=CB=FB=B5=C4=CD=AC=B4=AB=C8=EB=B5=C4=B2=CE=CA=FD=B5=C4=D2=E2=D2=E5=D2=
=BB=D6=C2=A1=A3<SPAN style=3D"DISPLAY: none">=20
3=0E&Py&bA=12 </SPAN> <BR><SPAN style=3D"DISPLAY: =
none">e.(FNe0}?=20
</SPAN> <BR>// =
frame=BD=E1=B9=B9=D3=EB=C9=CF=C3=E6=BD=E9=C9=DC=B5=C4bios =B5=C4int =
15=B5=C4=B9=A6=C4=DC=B5=F7=D3=C3=B4=AB=C8=EB=B5=C4=B2=CE=CA=FD=CA=C7=D2=BB=
=D6=C2=B5=C4<SPAN=20
style=3D"DISPLAY: none"> i=14o@f"=08`R/ </SPAN> <BR><SPAN=20
style=3D"DISPLAY: none">_H=14=19=1E=3D=1Ci=133 =
</SPAN> <BR> Int15E820=20
(&Frame); // =
=D7=A2=D2=E2=D4=DA=CA=B9=D3=C3bochs=B6=D4=D5=E2=B8=F6=BA=AF=CA=FD=BD=F8=D0=
=D0=B5=F7=CA=D4=B5=C4=CA=B1=BA=F2=A3=AC=C4=E3=BF=C9=D2=D4=B9=DB=B2=EC=B5=BD=
winnt=D6=D0=B5=C4=B4=FA// =C2=EB=BA=CDwin2k=20
=
ntldr=D6=D0=B5=C4=B4=FA=C2=EB=C3=BB=D3=D0=D2=BB=B5=E3=C7=F8=B1=F0=A1=A3<S=
PAN style=3D"DISPLAY: none"> =1F=17 D=0E R7dj=20
</SPAN> <BR><SPAN style=3D"DISPLAY: =
none">[=13=13=1ES^=1F=14=14=06=20
</SPAN> <BR> =
=20
// =B1=BE=C0=B4=B4=F2=CB=E3=D2=D4=A1=B6linux =
nt=BB=F1=C8=A1=C0=A9=D5=B9=C4=DA=B4=E6=A1=B7=D2=BB=CE=C4=D6=D0=B8=F8=B3=F6=
=B5=C4=C4=DA=B4=E6=B5=D8=D6=B7=D1=F9=C0=FD=D7=F6=CE=AA=CA=B5//=20
=
=BC=CA=C4=DA=B4=E6=B5=D8=D6=B7=BD=E9=C9=DC=B5=C4=A3=AC=B2=BB=B9=FD=D4=DA=CE=
=D2=CA=B9=D3=C3bochs=D0=E9=C4=E2=BB=FA=B5=F7=CA=D4=B5=C4=B9=FD=B3=CC=D6=D0=
=C8=B4=B7=A2<SPAN style=3D"DISPLAY: none"> =14<#@=0F:'5 =1E=20
</SPAN> <BR>// =
=CF=D6=A3=ACInt15E820=BA=AF=CA=FD=D6=BB=B7=B5=BB=D8=C1=CB=C1=BD=BF=E9=C4=DA=
=B4=E6=A3=AC=CE=D2=B2=BB=D6=AA=B5=C0bochs=CA=C7=B7=F1=CA=B9=D3=C3=C1=CB=D5=
=E6=CA=B5=B5=C4//=20
=
=CE=EF=C0=ED=B5=D8=D6=B7=A3=AC=C8=BB=B6=F8=CE=D2=D3=D6=B2=BB=B5=C3=B2=BB=D2=
=D4=CE=D2=CB=F9=BC=FB=B5=C4=CA=C2=CA=B5=CE=AA=C0=FD=C0=B4=BD=F8=D0=D0=BD=E9=
=C9=DC=A3=AC=D2=B2=D0=ED=C4=E3=CB=F9=B5=F7// =
=CA=D4=B5=C4=BD=E1=B9=FB=D3=EB=CE=D2=B5=C4=B2=BB=CF=E0=CD=AC=A3=AC=B2=BB=B9=
=FD=D4=AD=C0=ED=C6=E4=CA=B5=CA=C7=D2=BB=D6=C2=B5=C4=A3=AC=B6=F8=C7=D2=CE=D2=
=CA=B9=D3=C3bochs=D0=E9=C4=E2//=20
=
=BB=FA=BD=F8=D0=D0=B5=F7=CA=D4=B5=C4=B8=F9=B1=BE=C4=BF=B5=C4=B2=BB=D4=DA=D5=
=E2=C0=EF=A1=A3<SPAN style=3D"DISPLAY: none"> (=1E*=1C<a.=01=3D=0E=20
</SPAN> <BR>//<SPAN style=3D"DISPLAY: none"> =
w)#y=0E=17=1E&n]=20
</SPAN> <BR><SPAN style=3D"DISPLAY: none">`q h=0F=16=14;F5=20
</SPAN> <BR> if (Frame.ErrorFlag || Frame.Size =
<=20
sizeof (Frame.Descriptor)) {<SPAN style=3D"DISPLAY: none"> =01/x =
x3 \ b=20
</SPAN> <BR> break ;<SPAN=20
style=3D"DISPLAY: none"> 2G4!!sh*=0E </SPAN> <BR> =
}<SPAN=20
style=3D"DISPLAY: none"> =10 `Rw=10`=124=13 </SPAN> <BR><SPAN =
style=3D"DISPLAY: none">qUbZQ=163j*=13 </SPAN> <BR>#ifdef =
DEBUG1<SPAN=20
style=3D"DISPLAY: none"> z\ =13<=1CEVk=1D =
</SPAN> <BR> =20
BlPrint("E820: %lx %lx:%lx %lx:%lx %lx %lx\n",<SPAN =
style=3D"DISPLAY: none">=20
=1E =03f4HQ@v% </SPAN> <BR> =
Frame.Size,<SPAN=20
style=3D"DISPLAY: none"> ~=01-=06b=05*;?e </SPAN> <BR> =
=20
Frame.Descriptor.BaseAddrHigh, =
Frame.Descriptor.BaseAddrLow,<SPAN=20
style=3D"DISPLAY: none"> =14YVc ,7=11C=1D </SPAN> <BR> =
=20
Frame.Descriptor.SizeHigh, =20
Frame.Descriptor.SizeLow,<SPAN style=3D"DISPLAY: none"> =
x=14NB=10otyL=02=20
</SPAN> <BR> =20
Frame.Descriptor.MemoryType,<SPAN style=3D"DISPLAY: none"> =
4'M}A,=1F.1%=20
</SPAN> <BR> Frame.Key<SPAN=20
style=3D"DISPLAY: none"> =18F&=02#LU\O% =
</SPAN> <BR> =20
);<SPAN style=3D"DISPLAY: none"> y=1B1/=03=02Tx/)=20
</SPAN> <BR><SPAN style=3D"DISPLAY: none">=1EEF=0Eh/e2V^=20
</SPAN> <BR> _asm {<SPAN=20
style=3D"DISPLAY: none"> 3V=08ndHv a=18 </SPAN> <BR> =
=20
push ax<SPAN style=3D"DISPLAY: none"> =
-=1A=1Bl =1F=19CMY=20
</SPAN> <BR> mov ax, =
0<SPAN=20
style=3D"DISPLAY: none"> $N=1B%=14=11`uQ8 </SPAN> <BR> =
=20
int 16h<SPAN style=3D"DISPLAY: none"> =
<=11=08{cky!O=20
</SPAN> <BR> pop =
ax<SPAN=20
style=3D"DISPLAY: none"> =1BR- 4gT]gp </SPAN> <BR> =
=20
}<SPAN style=3D"DISPLAY: none"> X2E=17$jOg*=10=20
</SPAN> <BR>#endif<SPAN style=3D"DISPLAY: none"> =
P=0ER'=03=06=10T=15T=20
</SPAN> <BR><SPAN style=3D"DISPLAY: none">=038q=3D.0:n[_=20
</SPAN> <BR> //=20
=
=CE=D2=C3=C7=D2=D4bochs=B5=F7=CA=D4=B5=C4=CA=B5=BC=CA=B5=D8=D6=B7=C0=B4=BC=
=C6=CB=E3=D2=BB=CF=C2=A3=AC=BC=D9=C9=E8=D5=E2=C0=EF=CA=C7=B5=DA=D2=BB=B4=CE=
=B5=F7=D3=C3Int15E820=BA=AF=CA=FD=BA=F3=B5=C4=B7=B4=BB=D8=D6=B5<SPAN=20
style=3D"DISPLAY: none"> =12;=1CG*S mJ% </SPAN> <BR> =
=20
// =BC=B4=A3=BA0000 0000 639K ARM =
=BF=C9=D2=D4=CA=B9=D3=C3=B5=C4=BB=F9=B1=BE=C4=DA=B4=E6<SPAN =
style=3D"DISPLAY: none">=20
a=14:r*=3D=12i=1B% </SPAN> <BR> BAddr =3D=20
Frame.Descriptor.BaseAddrLow; // 00000000<SPAN=20
style=3D"DISPLAY: none"> 0s_[Dl=07=01=05V </SPAN> <BR> =
EAddr =3D=20
Frame.Descriptor.BaseAddrLow + Frame.Descriptor.SizeLow - 1; //=20
00000000+639K-1<SPAN style=3D"DISPLAY: none"> =04U9[9 =17bxP =
</SPAN> <BR>//=20
=BC=B4=A3=BA0009FBFF<SPAN style=3D"DISPLAY: none"> *wFHf=100=05%_ =
</SPAN> <BR><SPAN=20
style=3D"DISPLAY: none">d-.:=1B=08Sl3J </SPAN> <BR> =
//<SPAN=20
style=3D"DISPLAY: none"> &U=14\=3D@c 0Q =
</SPAN> <BR> //=20
=
=C8=E7=B9=FBBaseAddrHigh=B3=AC=B9=FD=C1=CBFFFFFFFF,=D4=F2=CB=B5=C3=F7=C4=DA=
=B4=E6=C8=DD=C1=BF=D2=D1=BE=AD=B3=AC=B9=FD=C1=CB32=CE=BB=B4=A6=C0=ED=C6=F7=
=CB=F9=C4=DC=B1=ED=CA=BE=B5=C44G=C4=DA=B4=E6=B5=D8=D6=B7//=20
=
=BF=D5=BC=E4(=D4=DAwinnt=CA=B1=B4=FA=BB=B9=C3=BB=D3=D0=BF=BC=C2=C764=CE=BB=
=B4=A6=C0=ED=C6=F7=B5=C4=C7=E9=BF=F6)<SPAN style=3D"DISPLAY: none"> =
=195=1D=0F=07=04b=1D5J=20
</SPAN> <BR> //<SPAN=20
style=3D"DISPLAY: none"> EYU _ 2j1' </SPAN> <BR> =
if=20
(Frame.Descriptor.BaseAddrHigh =3D=3D 0) {<SPAN style=3D"DISPLAY: =
none">=20
>=07v}fTuR'3 </SPAN> <BR><SPAN style=3D"DISPLAY: =
none">dawfIWsj!z=20
</SPAN> <BR> if (EAddr < BAddr) =
{<SPAN=20
style=3D"DISPLAY: none"> wm/*+)=17=1Av </SPAN> <BR> =
=20
//<SPAN style=3D"DISPLAY: none"> z=1CL4Wd=01r=05x=20
</SPAN> <BR> //=20
=
=CB=F9=D2=D4=CE=D2=C3=C7=BD=AB=CB=FB=BD=D8=B6=CF=A3=AC=B1=ED=CA=BE=CE=AA4=
G=C4=DA=B4=E6=B5=D8=D6=B7=B5=C4=B1=DF=BD=E7<SPAN style=3D"DISPLAY: =
none"> f =1Av =10h,r=20
</SPAN> <BR> =
=20
//<SPAN style=3D"DISPLAY: none"> o"8~q]82nn =
</SPAN> <BR> =20
EAddr =3D 0xFFFFFFFF;<SPAN=20
style=3D"DISPLAY: none"> S]BV~:=0E ]) </SPAN> <BR> =
=20
}<SPAN style=3D"DISPLAY: none"> y8rUQgtu=14{ =
</SPAN> <BR><SPAN=20
style=3D"DISPLAY: none">lDS=07=02O6AJ# </SPAN> <BR> =
=20
//<SPAN style=3D"DISPLAY: none"> 2=193_OY>=1Af`=20
</SPAN> <BR> // Based upon the =
address=20
range descriptor type, find the<SPAN style=3D"DISPLAY: none"> =
y*<1r,=1F{R=16=20
</SPAN> <BR> // available memory =
and add=20
it to the descriptor list<SPAN style=3D"DISPLAY: none"> sg=02j2roX =
z=20
</SPAN> <BR> //<SPAN=20
style=3D"DISPLAY: none"> Q'~t=07[*E/f </SPAN> <BR><SPAN=20
style=3D"DISPLAY: none">=11&*g=01Js<Bw =
</SPAN> <BR> =20
switch (Frame.Descriptor.MemoryType) {<SPAN=20
style=3D"DISPLAY: none"> ?h$&J'x5)=02 </SPAN> <BR> =
=20
case 1:<SPAN style=3D"DISPLAY: none"> =
P%[VW=135J=19=20
</SPAN> <BR> // =
<SPAN=20
style=3D"DISPLAY: none">=1Fx/Z*c@c=14A </SPAN> <BR>//=20
=
=C8=E7=B9=FB=C9=CF=B1=DF=B8=F8=B3=F6=B5=C4=C0=FD=D7=D3=C3=BB=D3=D0=B4=ED=CE=
=F3=B5=C4=BB=B0=A3=AC=CE=D2=C3=C7=BF=C9=D2=D4=B0=B4=D5=D5=C0=FD=D7=D3=BD=AB=
=B1=A8=B8=E6=B5=C4=C4=DA=B4=E6=BF=E9=B2=E5=C8=EB=B5=BD=C4=DA=B4=E6=C3=E8/=
/=20
=
=CA=F6=B7=FB=C1=B4=B1=ED=D6=D0=C1=CB=A3=AC=D7=A2=D2=E2=B4=CB=CA=B1=B5=C4M=
emoryType=B2=A2=C3=BB=D3=D0=CC=AB=CA=B5=BC=CA=B5=C4=D7=F7=D3=C3=A3=AC=B2=BB=
=B9=DC=C4=DA=B4=E6=C0=E0=D0=CD=CA=C7=CA=B2=C3=B4=A3=AC// =
=B6=BC=D0=E8=D2=AA=B2=E5=C8=EB=B5=BD=C4=DA=B4=E6=C3=E8=CA=F6=B7=FB=C1=B4=B1=
=ED=D6=D0<SPAN=20
style=3D"DISPLAY: none"> WkXbr A]yg </SPAN> <BR> =
=20
//<SPAN style=3D"DISPLAY: none"> =1D =
`\M=16=13OU=20
</SPAN> <BR><SPAN style=3D"DISPLAY: =
none">0E]s=1C&&=07T(=20
</SPAN> <BR> =20
InsertDescriptor (BAddr, EAddr - BAddr + 1);<SPAN =
style=3D"DISPLAY: none">=20
=05]=05Gu<R=11|7 </SPAN> <BR> =
=20
break;<SPAN style=3D"DISPLAY: none"> pUV-yBG*=1DV =
</SPAN> <BR> =20
}<SPAN style=3D"DISPLAY: none"> YZ<pe=1C =
Ls>=20
</SPAN> <BR> }<SPAN style=3D"DISPLAY: none"> =
=08C<=20
9^P<\t </SPAN> <BR><SPAN style=3D"DISPLAY: none">zf =
,V/<=15=10T=20
</SPAN> <BR> } while (Frame.Key) ;<SPAN =
style=3D"DISPLAY: none">=20
;2@2rL8K </SPAN> <BR><SPAN style=3D"DISPLAY: =
none">(.=1DW%a9Iw=20
</SPAN> <BR> return TRUE;<SPAN style=3D"DISPLAY: none"> =
7!Dey+fe,=20
</SPAN> <BR>}<SPAN style=3D"DISPLAY: none"> +=1Dp~Xb`2K=14=20
</SPAN> <BR><SPAN style=3D"DISPLAY: none">=07|=06pS~rWYZ=20
</SPAN> <BR><SPAN style=3D"DISPLAY: none">0&w=01/mV-7J=20
=
</SPAN> <BR>InsertDescriptor=BA=AF=CA=FD=B7=D6=CE=F6=A3=BA<SPAN =
style=3D"DISPLAY: none">=20
=07=1C25TzPo:=1F </SPAN> <BR>VOID<SPAN style=3D"DISPLAY: =
none"> 3{=18L%=1EA=12C=20
</SPAN> <BR>InsertDescriptor (<SPAN style=3D"DISPLAY: none"> =
~=14 R06L V{=20
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