libstd.asm

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

_puts:
PUSH EBP
MOV EBP,ESP
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
MOV EAX,__iob
MOV EBX,32
ADD EAX,EBX
PUSH EAX
MOV CL,2
CALL _fputs
ADD ESP,8
MOV EAX,10
PUSH EAX
MOV EAX,__iob
MOV EBX,32
ADD EAX,EBX
PUSH EAX
MOV CL,2
CALL _OS_fputc
ADD ESP,8
POP EBP
RET

_reverse:
PUSH EBP
MOV EBP,ESP
ADD ESP,-8
LEA EAX,[EBP-4]
PUSH EAX
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
MOV CL,1
CALL _strlen
ADD ESP,4
POP EBX
ADD EAX,EBX
MOV EBX,EAX
MOV EAX,1
XCHG EAX,EBX
SUB EAX,EBX
POP EBX
MOV [EBX],EAX
_lib_3:
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
CALL __ult
OR EAX,EAX
JNE _lib_5
JMP _lib_4
_lib_5:
LEA EAX,[EBP-8]
PUSH EAX
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOVSX EAX,BYTE [EBX]
POP EBX
MOV [EBX],EAX
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
DEC EAX
PUSH EAX
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOVSX EAX,BYTE [EBX]
POP EBX
MOV [EBX],AL
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX, [EBX]
DEC EAX
MOV [EBX],EAX
INC EAX
PUSH EAX
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
MOV [EBX],AL
JMP _lib_3
_lib_4:
MOV ESP,EBP
POP EBP
RET

_strcpy:
PUSH EBP
MOV EBP,ESP
ADD ESP,-4
LEA EAX,[EBP-4]
PUSH EAX
LEA EAX,[EBP+12]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
MOV [EBX],EAX
_lib_7:
LEA EAX,[EBP+12]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
DEC EAX
PUSH EAX
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
DEC EAX
MOV EBX,EAX
MOVSX EAX,BYTE [EBX]
POP EBX
MOV [EBX],AL
OR EAX,EAX
JNE _lib_9
JMP _lib_8
_lib_9:
JMP _lib_7
_lib_8:
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX, [EBX]
MOV ESP,EBP
POP EBP
RET

_strlen:
PUSH EBP
MOV EBP,ESP
ADD ESP,-4
LEA EAX,[EBP-4]
PUSH EAX
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
MOV [EBX],EAX
_lib_11:
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOVSX EAX,BYTE [EBX]
OR EAX,EAX
JNE _lib_13
JMP _lib_12
_lib_13:
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
JMP _lib_11
_lib_12:
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
XCHG EAX,EBX
SUB EAX,EBX
MOV ESP,EBP
POP EBP
RET

_toupper:
PUSH EBP
MOV EBP,ESP
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOV EAX,122
CALL __le
OR EAX,EAX
JNE _lib_18
JMP _lib_16
_lib_18:
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOV EAX,97
CALL __ge
OR EAX,EAX
JNE _lib_19
JMP _lib_16
_lib_19:
MOV EAX,1
JMP _lib_17
_lib_16:
XOR EAX,EAX
_lib_17:
OR EAX,EAX
JNE _lib_20
JMP _lib_15
_lib_20:
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOV EAX,32
XCHG EAX,EBX
SUB EAX,EBX
POP EBP
RET
_lib_15:
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBP
RET

_atoi:
PUSH EBP
MOV EBP,ESP
ADD ESP,-8
_lib_22:
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOVSX EAX,BYTE [EBX]
PUSH EAX
MOV CL,1
CALL _isspace
ADD ESP,4
OR EAX,EAX
JNE _lib_24
JMP _lib_23
_lib_24:
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
JMP _lib_22
_lib_23:
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX,1
MOV [EBX],EAX
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOVSX EAX,BYTE [EBX]
JMP _lib_27
_lib_28:
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX,-1
MOV [EBX],EAX
_lib_29:
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
JMP _lib_26
_lib_27:
CALL __switch
 DD _lib_28
 DD 45
 DD _lib_29
 DD 43
 DD 0
_lib_26:
LEA EAX,[EBP-8]
MOV EBX,EAX
XOR EAX,EAX
MOV [EBX],EAX
_lib_30:
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOVSX EAX,BYTE [EBX]
PUSH EAX
MOV CL,1
CALL _isdigit
ADD ESP,4
OR EAX,EAX
JNE _lib_32
JMP _lib_31
_lib_32:
LEA EAX,[EBP-8]
PUSH EAX
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,10
IMUL EBX
PUSH EAX
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
DEC EAX
MOV EBX,EAX
MOVSX EAX,BYTE [EBX]
POP EBX
ADD EAX,EBX
MOV EBX,EAX
MOV EAX,48
XCHG EAX,EBX
SUB EAX,EBX
POP EBX
MOV [EBX],EAX
JMP _lib_30
_lib_31:
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
IMUL EBX
MOV ESP,EBP
POP EBP
RET

_atoib:
PUSH EBP
MOV EBP,ESP
ADD ESP,-8
LEA EAX,[EBP-4]
MOV EBX,EAX
XOR EAX,EAX
MOV [EBX],EAX
_lib_34:
LEA EAX,[EBP+12]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOVSX EAX,BYTE [EBX]
PUSH EAX
MOV CL,1
CALL _isspace
ADD ESP,4
OR EAX,EAX
JNE _lib_36
JMP _lib_35
_lib_36:
LEA EAX,[EBP+12]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
JMP _lib_34
_lib_35:
_lib_37:
LEA EAX,[EBP-8]
PUSH EAX
LEA EAX,[EBP+12]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
DEC EAX
MOV EBX,EAX
MOVSX EAX,BYTE [EBX]
MOV EBX,127
AND EAX,EBX
POP EBX
MOV [EBX],EAX
MOV EBX,EAX
MOV EAX,48
CALL __ge
OR EAX,EAX
JNE _lib_39
JMP _lib_38
_lib_39:
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOV EAX,97
CALL __ge
OR EAX,EAX
JNE _lib_41
JMP _lib_40
_lib_41:
LEA EAX,[EBP-8]
PUSH EAX
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOV EAX,87
XCHG EAX,EBX
SUB EAX,EBX
POP EBX
MOV [EBX],EAX
JMP _lib_42
_lib_40:
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOV EAX,65
CALL __ge
OR EAX,EAX
JNE _lib_44
JMP _lib_43
_lib_44:
LEA EAX,[EBP-8]
PUSH EAX
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOV EAX,55
XCHG EAX,EBX
SUB EAX,EBX
POP EBX
MOV [EBX],EAX
JMP _lib_45
_lib_43:
LEA EAX,[EBP-8]
PUSH EAX
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOV EAX,48
XCHG EAX,EBX
SUB EAX,EBX
POP EBX
MOV [EBX],EAX
_lib_45:
_lib_42:
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
CALL __ge
OR EAX,EAX
JNE _lib_47
JMP _lib_46
_lib_47:
JMP _lib_38
_lib_46:
LEA EAX,[EBP-4]
PUSH EAX
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
IMUL EBX
PUSH EAX
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
ADD EAX,EBX
POP EBX
MOV [EBX],EAX
JMP _lib_37
_lib_38:
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX, [EBX]
MOV ESP,EBP
POP EBP
RET

_fgets:
PUSH EBP
MOV EBP,ESP
LEA EAX,[EBP+16]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP+12]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
MOV EAX,1
PUSH EAX
MOV CL,4
CALL __gets
ADD ESP,16
POP EBP
RET

_gets:
PUSH EBP
MOV EBP,ESP
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
MOV EAX,32767
PUSH EAX
MOV EAX,__iob
PUSH EAX
XOR EAX,EAX
PUSH EAX
MOV CL,4
CALL __gets
ADD ESP,16
POP EBP
RET

__gets:
PUSH EBP
MOV EBP,ESP
ADD ESP,-8
LEA EAX,[EBP-8]
PUSH EAX
LEA EAX,[EBP+20]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
MOV [EBX],EAX
_lib_51:
LEA EAX,[EBP+16]
MOV EBX,EAX
MOV EAX, [EBX]
DEC EAX
MOV [EBX],EAX
OR EAX,EAX
JNE _lib_53
JMP _lib_52
_lib_53:
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP+12]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
MOV CL,1
CALL _OS_fgetc
ADD ESP,4
POP EBX
MOV [EBX],AL
JMP _lib_56
_lib_57:
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
XOR EAX,EAX
MOV [EBX],AL
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP+20]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
CALL __eq
OR EAX,EAX
JNE _lib_59
JMP _lib_58
_lib_59:
XOR EAX,EAX
MOV ESP,EBP
POP EBP
RET
_lib_58:
LEA EAX,[EBP+20]
MOV EBX,EAX
MOV EAX, [EBX]
MOV ESP,EBP
POP EBP
RET
_lib_60:
LEA EAX,[EBP-8]
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],EAX
LEA EAX,[EBP+20]
MOV EBX,EAX
MOV EAX, [EBX]
MOV ESP,EBP
POP EBP
RET
_lib_61:
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP+20]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
CALL __ugt
OR EAX,EAX
JNE _lib_63
JMP _lib_62
_lib_63:
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX,1
MOV [EBX],EAX
JMP _lib_64
_lib_62:
LEA EAX,[EBP-4]
MOV EBX,EAX
XOR EAX,EAX
MOV [EBX],EAX
_lib_64:
JMP _lib_65
_lib_66:
LEA EAX,[EBP-4]
PUSH EAX
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP+20]
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
XCHG EAX,EBX
SUB EAX,EBX
POP EBX
MOV [EBX],EAX
_lib_65:
JMP _lib_67
LEA EAX,[EBP+16]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
_lib_68:
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX, [EBX]
DEC EAX
MOV [EBX],EAX
INC EAX
OR EAX,EAX
JNE _lib_70
JMP _lib_69
_lib_70:
MOV EAX,_lib_50+0
PUSH EAX
MOV EAX,__iob
MOV EBX,64
ADD EAX,EBX
PUSH EAX
MOV CL,2
CALL _fputs
ADD ESP,8
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
DEC EAX
MOV [EBX],EAX
LEA EAX,[EBP+16]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
JMP _lib_68
_lib_69:
JMP _lib_51
_lib_67:
_lib_71:
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
JMP _lib_55
_lib_56:
CALL __switch
 DD _lib_57
 DD -1
 DD _lib_60
 DD 10
 DD _lib_61
 DD 8
 DD _lib_66
 DD 24
 DD 0
JMP _lib_71
_lib_55:
JMP _lib_51
_lib_52:
LEA EAX,[EBP-8]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
XOR EAX,EAX
MOV [EBX],AL
LEA EAX,[EBP+20]
MOV EBX,EAX
MOV EAX, [EBX]
MOV ESP,EBP
POP EBP
RET
_lib_50 DB 8,32,8,0

_fprintf:
PUSH EBP
MOV EBP,ESP
ADD ESP,-4
LEA EAX,[EBP-4]
PUSH EAX
CALL _CCARGC
PUSH EAX
LEA EAX,[EBP+8]
POP EBX
SHL EBX,1
SHL EBX,1
ADD EAX,EBX
POP EBX
MOV [EBX],EAX
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX, [EBX]
DEC EAX
DEC EAX
DEC EAX
DEC EAX
MOV [EBX],EAX
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
LEA EAX,[EBP-4]
MOV EBX,EAX
MOV EAX, [EBX]
DEC EAX
DEC EAX
DEC EAX
DEC EAX
MOV [EBX],EAX
PUSH EAX
MOV CL,2
CALL __print
ADD ESP,8
MOV ESP,EBP
POP EBP
RET

_printf:
PUSH EBP
MOV EBP,ESP
MOV EAX,__iob
MOV EBX,32
ADD EAX,EBX
PUSH EAX
CALL _CCARGC
PUSH EAX
LEA EAX,[EBP+8]
POP EBX
SHL EBX,1
SHL EBX,1
ADD EAX,EBX
MOV EBX,EAX
MOV EAX,4
XCHG EAX,EBX
SUB EAX,EBX
PUSH EAX
MOV CL,2
CALL __print
ADD ESP,8
POP EBP
RET

__print:
PUSH EBP
MOV EBP,ESP
ADD ESP,-56
LEA EAX,[EBP-16]
MOV EBX,EAX
XOR EAX,EAX
MOV [EBX],EAX
LEA EAX,[EBP-32]
PUSH EAX
LEA EAX,[EBP+8]
MOV EBX,EAX
MOV EAX, [EBX]
DEC EAX
DEC EAX
DEC EAX
DEC EAX
MOV [EBX],EAX
INC EAX
INC EAX
INC EAX
INC EAX
MOV EBX,EAX
MOV EAX, [EBX]
POP EBX
MOV [EBX],EAX
_lib_75:
LEA EAX,[EBP-32]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOVSX EAX,BYTE [EBX]
OR EAX,EAX
JNE _lib_77
JMP _lib_76
_lib_77:
LEA EAX,[EBP-32]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOVSX EAX,BYTE [EBX]
MOV EBX,EAX
MOV EAX,37
CALL __ne
OR EAX,EAX
JNE _lib_79
JMP _lib_78
_lib_79:
LEA EAX,[EBP-32]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
DEC EAX
MOV EBX,EAX
MOVSX EAX,BYTE [EBX]
PUSH EAX
LEA EAX,[EBP+12]
MOV EBX,EAX
MOV EAX, [EBX]
PUSH EAX
MOV CL,2
CALL _OS_fputc
ADD ESP,8
LEA EAX,[EBP-16]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
JMP _lib_75
JMP _lib_80
_lib_78:
LEA EAX,[EBP-32]
MOV EBX,EAX
MOV EAX, [EBX]
INC EAX
MOV [EBX],EAX
_lib_80:
LEA EAX,[EBP-32]
MOV EBX,EAX
MOV EAX, [EBX]
MOV EBX,EAX
MOVSX EAX,BYTE [EBX]
MOV EBX,EAX
MOV EAX,37
CALL __eq
OR EAX,EAX