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disassembler.cpython-39.pyc
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r^ r% )r] r' r^ r" )r_ r/ r` r% )ra r' r^ r% )�mov32r �=r" )�jler+ �<=r% )�movr rc r% )rb r' rc r" )rd r/ re r% )rf r' rc r% )�arsh32r �s>>=r" )�jsltr+ �s<r% )�arshr rh r% )rg r' rh r" )ri r/ rj r% )rk r' rh r% )Zjsler+ zs<=r% )Zendian32r' Zendianr" )ar � � � � � � � � � � � r" �$ �% �' �( �, �- �/ �0 �4 �5 �7 �8 �< �= �? r% �D �E �G �H �L �M �O �P �T �U �W �X �\ �] �_ �a �b �c �d �e �g �i �j �k �l �m �o �q �r �s �t �u �w �y �z �{ �| �} � � � � � � � � � � � � � � � � � � � � � �� �� �� �� �� �� �� �� �� c C s �z�| j |j \}}}}|dkr8d|j||jf dfW S |dkrXd|j||jf dfW S |dkr�dd|j ||j d f dfW S |d kr�d |j||jf dfW S |d kr�d |j||jd|j ||j d f dfW S |dk�r d|j||jd|j ||j d f dfW S |dk�rn|d u �r(td��|jdk�rJd|j|jf d fW S |jd> |jB }d|j|f d fW S |dk�r�d||jf dfW S |dk�r�d||jd|j f dfW S |dk�r�d|j||jd|j f dfW S |dk�rd ||jd|j |jf dfW S |d k�r0d ||jd|j |jf dfW S |d k�rTd |j|||jf dfW S |d!k�r�|j| jk�r�z d"|| j |j |jf dfW W S t �y� d#||jf df Y W S 0 d$|d|j f dfW S |d%k�r�|dfW S td&��W n t �y d'|j Y S 0 d S )(Nr z r%d %s %dr r? z r%d %s 0x%xr$ z goto %s <%d>z%+dr r' z r%d %s r%dr+ zif r%d %s %d goto pc%s <%d>r/ z if r%d %s r%d goto pc%s <%d>r. z1lddw requires two instructions to be disassembledzr%d = <map at fd #%d>r" z r%d = 0x%xr0 zr0 = *(u%s*)skb[%s]r= zr0 = *(u%d*)skb[r%d %s]rI zr%d = *(u%d*)(r%d %s)rJ z*(u%d*)(r%d %s) = %drK z*(u%d*)(r%d %s) = r%dr zr%d = %s (u%s)r%drW z %s bpf_%s#%dz%s <unknown helper #%d>z%s %sr[ zunknown opcode classzunknown <0x%x>) �opcodesr r r r r r � Exception�BPF_PSEUDO_CALL� bpf_helpers� IndexError�KeyError) �clsr �w�w1�nameZopclass�op�bitsr r r r �decode� s� �� �� �� �� �� �� �� zBPFDecoder.decodeN)r r r r� r� r� � classmethodr� r r r r r ' s� ^�br c C s& t �| ||�\}}d| |j|f |fS )Nz%4d: (%02x) %s)r r� r )r �w0r� r �skipr r r �disassemble_instruction3 s r� c C s� t �t �| �t �t��}tt| �d �}|d }d}g }td|�D ]D}|| }|rd|d8 }d| }nt|d ||�\}}|� |� |}qBt|d |d �\}}|� |� |S )Nr7 r r z %4d: (64-bit upper word)) r �castZc_char_pZPOINTERr �int�len�ranger� �append) �bpfstrZptrZnuminstrr� r� � instr_listr r� Z instr_strr r r �disassemble_str7 s r� c C s d| g}|t |�7 }t�|�S )Nz Disassemble of BPF program %s:)r� r �join)Z func_namer� r� r r r �disassemble_progJ s r� c " @ s� e Zd Zejdejdejdejdejdej dej dej dej d ej d ejd ejd ejd ejdejdejd dejd diZedd� �Zed!dd��Zed"dd ��Zed d � �Zed#d d ��ZdS )$� MapDecoderZ_Bool�charZwchar_tz unsigned charZshortzunsigned shortr� z unsigned intZlongz unsigned longz long longzunsigned long long�floatZdoublez long double� Z__int128zunsigned __int128c C s~ z^t |tj�rd}nHt |tj�r&d}n6t |tj�rR| j|j d t|j� d }n | j| }W n t yx t|�}Y n0 |S )N�struct�union�[�]) � issubclassr � Structure�UnionZArray� ctype2strZ_type_�strZ_length_r� )r� �t�field_type_namer r r � get_ct_nameb s zMapDecoder.get_ct_nameFNc C s* |sdS |d ur d|||f S d||f S )N� z[%d,%d +%d bit]z [%d +%d] r )r� r �sizeZenabledZ bitoffsetr r r �format_size_infoq s zMapDecoder.format_size_infor� r c C s� g }z�|j D ]�\}}t|tj�p*t|tj�}| �|�} t||�j} t�|�} | � || | |�} |r�|� d|| | f � || � ||d || �7 }|� d||f � q |� d|| | |f � q W n� t �y� d} |j D ]�}t |�dk�r(|\}}}| �|�} | � || ||�} |� d|| | ||f � n`|\}}| �|�} t||�j} t�|�} d}d} | � || | |�} |� d|| | |f � || 7 }| |7 } q�Y n0 |S )Nz%s%s%s {z z%s} %s;z %s%s%s %s;r � z %s%s%s %s:%d;)r r� r r� r� r� �getattrr Zsizeofr� r� � print_ct_map� ValueErrorr� )r� r� �indentr �sizeinfo� map_lines� field_nameZ field_type� is_structuredr� Z field_offsetZ field_sizeZsizedescZ offset_bitsZfieldZ field_bitsr r r r� y sj � �� � � � � �zMapDecoder.print_ct_mapc C sf t |tj�pt |tj�}| �|�}|rTd| g}|| j|d|d�7 }|�d| � nd||f g}|S )Nz %s {z �r� z } %s;z %s %s;)r� r r� r� r� r� r� )r� r� r� r� r � type_namer� r r r �print_map_ctype� s � zMapDecoder.print_map_ctypec C sL d|||j |jf g}|| j|jd|d�7 }|| j|jd|d�7 }t�|�S )Nz-Layout of BPF map %s (type %s, FD %d, ID %d):�keyr �value)Zmap_fdZmap_idr ZKeyZLeafr r� )r� �map_name�map_obj�map_typer� r� r r r � decode_map� s �zMapDecoder.decode_map)FN)r� r F)F) r r r r Zc_boolZc_charZc_wcharZc_ubyteZc_shortZc_ushortZc_intZc_uintZc_longZc_ulongZ c_longlongZ c_ulonglongZc_floatZc_doubleZ c_longdoubleZc_int64r r� r� r� r� r� r r r r r r r� O s8 � 3 r� Fc C s t |�}tj| |||d�S )Nr )r r� r )r r r r� Z map_type_namer r r r � s r )N)F)�osr Zctypesr �tabler r� r r r� r r r r� r� r� r� r r r r r �<module> s u
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