getarg.asm

small c complier 它也Menuet OS的一个附件,同样他也是有汇编实现

   
_getarg:
PUSH EBP
MOV EBP,ESP
ADD ESP,-8
LEA EAX,[EBP+24]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
XOR EAX,EAX
CALL __lt
PUSH EAX
LEA EAX,[EBP+24]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP+12]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
CALL __ge
POP EBX
OR EAX,EBX
OR EAX,EAX
JNE _0_3
JMP _0_2
_0_3:
LEA EAX,[EBP+20]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
XOR EAX,EAX
MOV [EBX],AL
MOV EAX,-1
MOV ESP,EBP
POP EBP
RET
_0_2:
LEA EAX,[EBP-8]
MOV EBX,EAX
XOR EAX,EAX
MOV [EBX],EAX
LEA EAX,[EBP-4]
PUSH EAX
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP+24]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
SHL EAX,1
SHL EAX,1
ADD EAX,EBX
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
MOV [EBX],EAX
_0_4:
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP+16]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
CALL __lt
OR EAX,EAX
JNE _0_6
JMP _0_5
_0_6:
LEA EAX,[EBP+20]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
ADD EAX,EBX
PUSH EAX
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
ADD EAX,EBX
MOV EBX,EAX
MOVSX EAX,BYTE [EBX]
POP EBX
MOV [EBX],AL
OR EAX,EAX
JE _0_8
JMP _0_7
_0_8:
JMP _0_5
_0_7:
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
JMP _0_4
_0_5:
LEA EAX,[EBP+20]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
ADD EAX,EBX
MOV EBX,EAX
XOR EAX,EAX
MOV [EBX],AL
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
MOV ESP,EBP
POP EBP
RET