我尝试在我的 Linux 电脑上复制我必须在 Windows 电脑上学习的组装工作区（其中我有关于如何安装和使用 wsl 的说明），但是当我尝试使用./assembly 进行组装时……
我尝试在我的 Linux 电脑上复制我必须在 Windows 电脑上学习的组装工作区（在那里我有关于如何安装和使用 WSL 的说明），但当我尝试使用
./assemble.ps1 ./file.s
我收到以下两个警告：
/usr/bin/ld: /tmp/cco4Rb1Y.o: warning: relocation in read-only section `.text'
/usr/bin/ld:, warning: creating DT_TEXTREL in a PIE
我尝试组装的代码是一个简单的测试代码：
.include "./files/utility.s"
.data
msg: .ascii "Ok /r"
.text
_main: nop
lea msg, %ebx
call outline
ret
实用文件对于我们的学生目标很有用，我认为没有什么能影响问题。
我读了一些关于使用 rip 引用（或 eip 在我的情况下是 32 位）进行寻址的内容，但没有用
assemble.ps1 文件是
param (
[string][Parameter(Mandatory=$true)]$sourcePath,
[switch][Alias('f')]$force = $false
)
$isPathValid = Test-Path -PathType Leaf $sourcePath
if(-not $isPathValid) {
Write-Host 'Path invalid';
exit
}
$fileHeader = file $sourcePath;
$isExecutable = $fileHeader -like "*ELF 32-bit*";
if($isExecutable) {
if(-not $force) {
Write-Host 'The file is an executable';
exit
}
else {
Write-Host 'The file is an executable';
}
}
$sourceFile = Get-ChildItem $sourcePath;
$dir = $sourceFile.Directory;
$name = $sourceFile.BaseName;
gcc -m32 -o "$dir/$name" '-Wa,-a' '-Wa,--defsym,LINUX=1' > "$dir/$name.lst" -g ./files/main.c $sourceFile
if($LASTEXITCODE -ne 0) {
Write-Host "Assembler error"
}
utility.s 文件是：
#.nolist
#------------------------------------------------------------------------------
.ifdef DOS
.TEXT
inchar:
PUSH %EBX
inchar_loop:
MOV %AX,%BX
MOV $0x07,%AH
INT $0x21
MOV %BH,%AH
CMP $0x0A, %AL # ignore LF, for input redirection with CRLF files.
JE inchar_loop # redirection with LF files is not supported
POP %EBX
RET
.endif
.ifdef LINUX
.DATA
ic_tmp: .byte 0
.TEXT
inchar: PUSH %EBX
PUSH %ECX
PUSH %EDX
inchar_loop:
PUSH %EAX
MOV $3,%EAX # sys_read
MOV $0,%EBX # fd of stdin
LEA ic_tmp,%ECX # address of buffer
MOV $1,%EDX # read 1 character
INT $0x80
POP %EAX
MOV ic_tmp,%AL
CMP $0x0D, %AL # ignore CR, for input redirection with CRLF files
JE inchar_loop # redirection with LF files is supported
CMP $0x0A, %AL # convert LF to CR, to have the same ENTER behavior as DOS
JNE inchar_next
MOV $0x0D, %AL
inchar_next:
CMP $0x7F, %AL # convert delete (0x7f) to backspace (0x08)
JNE inchar_fine # because Linus decided that the backspace key should send a delete command...
MOV $0x08, %AL
inchar_fine:
POP %EDX
POP %ECX
POP %EBX
RET
.endif
#------------------------------------------------------------------------------
.ifdef DOS
.TEXT
outchar: PUSH %EAX
PUSH %EDX
MOV $0x02,%AH
MOV %AL,%DL
INT $0x21
POP %EDX
POP %EAX
RET
.endif
.ifdef LINUX
.DATA
oc_tmp: .ASCII "0"
.TEXT
outchar: PUSH %EAX
PUSH %EBX
PUSH %ECX
PUSH %EDX
MOV %al,oc_tmp
MOV $4,%EAX # sys_write
MOV $1,%EBX # fd of stdout
LEA oc_tmp,%ECX # address of buffer
MOV $1,%EDX # write 1 character
INT $0x80
POP %EDX
POP %ECX
POP %EBX
POP %EAX
RET
.endif
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
.TEXT
inbyte: PUSH %EBX
MOV %AH,%BH
CALL inhexchar
CALL outchar
MOV %AL,%AH
CALL inhexchar
CALL outchar
CALL HA2B8
MOV %BH,%AH
POP %EBX
RET
//------------------------------------------------------------------------------
.TEXT
inword: CALL inbyte
MOV %AL,%AH
CALL inbyte
RET
//------------------------------------------------------------------------------
.TEXT
inlong:
indword: CALL inword
SHL $16,%EAX
CALL inword
RET
//------------------------------------------------------------------------------
.TEXT
outbyte: PUSH %EAX
CALL B8HA2
XCHG %AL,%AH
CALL outchar
XCHG %AL,%AH
CALL outchar
POP %EAX
RET
//------------------------------------------------------------------------------
.TEXT
outword: XCHG %AL,%AH
CALL outbyte
XCHG %AL,%AH
CALL outbyte
RET
//------------------------------------------------------------------------------
.TEXT
outlong:
outdword: ROL $16, %EAX
CALL outword
ROL $16,%EAX
CALL outword
RET
//------------------------------------------------------------------------------//------------------------------------------------------------------------------#------------------------------------------------------------------------------
.TEXT
newline: PUSH %EAX
MOV $0x0D,%AL
CALL outchar
MOV $0x0A,%AL
CALL outchar
POP %EAX
RET
#------------------------------------------------------------------------------
.DATA
L247513: .ASCII "Checkpoint number "
L247003: .ASCII "x. Press any key to continue"
L247893: .FILL 1,4
.TEXT
pause : NOP
pause0: MOVB $0x30,L247003
JMP L271893
pause1: MOVB $0x31,L247003
JMP L271893
pause2: MOVB $0x32,L247003
JMP L271893
pause3: MOVB $0x33,L247003
JMP L271893
pause4: MOVB $0x34,L247003
JMP L271893
pause5: MOVB $0x35,L247003
JMP L271893
pause6: MOVB $0x36,L247003
JMP L271893
pause7: MOVB $0x37,L247003
JMP L271893
pause8: MOVB $0x38,L247003
JMP L271893
pause9: MOVB $0x39,L247003
JMP L271893
L271893: PUSH %EAX
PUSH %ECX
PUSH %ESI
CALL newline
MOV $L247513,%ESI
MOV $(L247893-L247513),%CX
L247527: MOV (%ESI),%AL
CALL outchar
INC %ESI
DEC %CX
JNZ L247527
CALL newline
CALL inchar
POP %ESI
POP %ECX
POP %EAX
RET
#---------------------------------------------------------------------------
.TEXT
inline: CMP $2,%CX
JB L409ABB # salta a fine
CMP $80,%CX
JA L409ABB # salta a fine
PUSH %EAX
PUSH %EBX
PUSH %ECX
PUSH %EDX
MOV %CX, %DX # salva numero caratteri iniziale
L4004C: CMP $2, %CX #ciclo
JE L40093 #salta a quasi fine
CALL inchar
CMP $0x0D,%AL
JE L40093 # salta a quasi fine
CMP $0x08,%AL
JE L67193 #salta a elimina carattere
L50193: CALL outchar
MOV %AL,(%EBX)
INC %EBX
DEC %CX
JMP L4004C #torna in ciclo
#elimina carattere
L67193: CMP %CX, %DX #impedisce di cancellare oltre l'inizio del buffer
JE L4004C
DEC %EBX
INC %CX
MOV $0x08, %AL
CALL outchar
MOV $0x20, %AL
CALL outchar
MOV $0x08, %AL
CALL outchar
JMP L4004C
L40093: MOV $0x0D,%AL #quasi fine
CALL outchar
MOV %AL,(%EBX)
INC %EBX
MOV $0x0A,%AL
CALL outchar
MOV %AL,(%EBX)
POP %EDX
POP %ECX
POP %EBX
POP %EAX
L409ABB: RET
#------------------------------------------------------------------------------
.TEXT
outline: PUSH %EAX
PUSH %EBX
PUSH %ECX
MOV $80,%CX
L4001B: MOV (%EBX),%AL
CMP $0x0D,%AL
JZ L4002A
DEC %CX
JZ L4002A
CALL outchar
INC %EBX
JMP L4001B
L4002A: CALL newline
POP %ECX
POP %EBX
POP %EAX
RET
#------------------------------------------------------------------------------
.TEXT
outmess: PUSH %EAX
PUSH %EBX
PUSH %ECX
L087509: CMP $0,%CX
JE L087508
MOV (%EBX),%AL
CALL outchar
INC %EBX
DEC %CX
JMP L087509
L087508: POP %ECX
POP %EBX
POP %EAX
RET
#------------------------------------------------------------------------------
.TEXT
inhexchar: CALL inchar
CMP $'0',%AL
JB inhexchar
CMP $'F',%AL
JA inhexchar
CMP $'9',%AL
JBE L3A89B3
CMP $'A',%AL
JB inhexchar
L3A89B3: RET
#------------------------------------------------------------------------------
.TEXT
B4HA1: AND $0x0F,%AL
CMP $9,%AL
JA L3ACD37
L3ACD30: ADD $0x30,%AL
RET
L3ACD37: ADD $0x37,%AL
RET
#------------------------------------------------------------------------------
.TEXT
B8HA2: PUSH %ECX
MOV %AL,%CH
SHR $4,%AL
CALL B4HA1
MOV %AL,%AH
MOV %CH,%AL
CALL B4HA1
POP %ECX
RET
#------------------------------------------------------------------------------
HA1B4: CMP $'9',%AL
JA L3KCD37
sub_0x30: SUB $0x30,%AL
RET
L3KCD37: SUB $0x37,%AL
RET
#------------------------------------------------------------------------------
.TEXT
HA2B8: PUSH %ECX
MOV %AL,%CH
MOV %AH,%AL
CALL HA1B4
MOV %AL,%AH
ROL $4,%AH
MOV %CH,%AL
CALL HA1B4
OR %AH,%AL
POP %ECX
RET
#------------------------------------------------------------------------------
outdecimal_byte:
outdecimal_tiny: PUSH %EAX
AND $0x000000FF,%EAX
CALL outdecimal_long
POP %EAX
RET
#------------------------------------------------------------------------------
outdecimal_word:
outdecimal_short: PUSH %EAX
AND $0x0000FFFF,%EAX
CALL outdecimal_long
POP %EAX
RET
#-----------------------------------------------------------
.DATA
resti_cifre: .fill 11,1
.TEXT
outdecimal_long: PUSH %EAX
PUSH %EBX
PUSH %ECX
PUSH %EDX
PUSH %ESI
PUSH %EDI
PUSH %EBP
MOV $10,%ECX
CMP $999999999,%EAX
JA long_L4013K
DEC %ECX
CMP $99999999,%EAX
JA long_L4013K
DEC %ECX
CMP $9999999,%EAX
JA long_L4013K
DEC %ECX
CMP $999999,%EAX
JA long_L4013K
DEC %ECX
CMP $99999,%EAX
JA long_L4013K
DEC %ECX
CMP $9999,%EAX
JA long_L4013K
DEC %ECX
CMP $999,%EAX
JA long_L4013K
DEC %ECX
CMP $99,%EAX
JA long_L4013K
DEC %ECX
CMP $9,%EAX
JA long_L4013K
DEC %ECX
long_L4013K: LEA resti_cifre,%EDI
MOV %ECX, %EBP
ADD %ECX,%EDI # EDI punta sotto alla cifra da inserire per prima
DEC %EDI # EDI torna a puntare alla prima cifra da inserire
ciclolongL4013K: MOV $0,%EDX # costruzione del dividendo EDX:EAX
MOV $10,%ESI # divisore in ESI
DIVL %ESI
AND $0x0000000F,%EDX # sistemazione del resto_cifra codificato ASCII
ADD $0x30,%DL
MOV %DL,(%EDI)
DEC %EDI
DEC %ECX
CMP $0,%ECX # Controllo fine ciclo
JNE ciclolongL4013K
LEA resti_cifre,%EBX
MOV %EBP, %ECX
CALL outmess
POP %EBP
POP %EDI
POP %ESI
POP %EDX
POP %ECX
POP %EBX
POP %EAX
RET
#------------------------------------------------------------------------------
.TEXT
indecimal_byte:
indecimal_tiny: MOVB $3,num_cifre_1eWK7
PUSH %EBX
PUSH %EAX
CALL converti_1eWK6
MOV %AL,%BL
POP %EAX
MOV %BL,%AL
POP %EBX
RET
indecimal_word:
indecimal_short: MOVB $5,num_cifre_1eWK7
PUSH %EBX
PUSH %EAX
CALL converti_1eWK6
MOV %AX,%BX
POP %EAX
MOV %BX,%AX
POP %EBX
RET
indecimal_long: MOVB $10,num_cifre_1eWK7
CALL converti_1eWK6
RET
#------------------------------------------------------------------------------
# Converta da decimale a binario in EAX
.DATA
prodotti_parziali_1eWK7: .fill 1,4
num_cifre_1eWK7: .fill 1,1
.TEXT
converti_1eWK6: NOP
PUSH %EDX
P_di_0_1eWK7: MOVL $0, prodotti_parziali_1eWK7
ciclo_1eWK7: CMPB $0x00,num_cifre_1eWK7 # termina se cifre finite
JE fine_1eWK7
new_cifra_1eWK7: CALL inchar # prelievo eventuale nuova cifra
CMP $0x0D,%AL # termina se ritorno carrello
JE fine_1eWK7
CMP $'0',%AL # scarta cifre non decimali
JB new_cifra_1eWK7
CMP $'9',%AL
JA new_cifra_1eWK7
CALL outchar
PUSH %EAX # nuovo prodotto parziale
MOV $10,%EAX
MULL prodotti_parziali_1eWK7
MOV %EAX,prodotti_parziali_1eWK7
POP %EAX
AND $0x0000000F,%EAX
ADDL %EAX, prodotti_parziali_1eWK7
DECB num_cifre_1eWK7
JNE ciclo_1eWK7
fine_1eWK7: MOV prodotti_parziali_1eWK7,%EAX
POP %EDX
RET
#-------------------------------------------------------------------------
.DATA
LZ647513: .BYTE 0x0A,0x0D,0x0A,0x0D
.ASCII "Press Q to exit . . . "
LZ567893: .BYTE
.TEXT
exit: MOV $LZ647513,%ESI
MOV $(LZ567893-LZ647513),%CX
LZ247AA7: MOV (%ESI),%AL
CALL outchar
INC %ESI
DEC %CX
JNZ LZ247AA7
waitQ_LZc247A: CALL inchar
CMP $'Q',%AL
JNE waitQ_LZc247A
.ifdef DOS
MOV $0x4C,%AH
INT $0x21
.endif
.ifdef LINUX
MOV $0x0001,%AX
INT $0x80
.endif
#-----------------------------------------------------------------------------
.global _main
