67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
.data
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filename: .asciz "input.txt"
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format: .asciz "%d-%d,%d-%d"
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result: .asciz "Result: %d\n"
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.text
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.globl main
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main:
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pushl %ebp
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movl %esp, %ebp
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xorl %eax, %eax # initialize count to 0
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movl $1, %ebx # initialize loop variable to 1
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# open the file and store the file descriptor in %ecx
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movl $5, %eax # set the number of the "open" syscall to 5
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movl $filename, %ebx # move the address of the filename to %ebx
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xorl %edx, %edx # set the flags to 0
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int $0x80
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# read the file line by line
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.loop:
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movl $3, %eax # set the number of the "read" syscall to 3
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movl %ecx, %ebx # move the file descriptor to %ebx
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movl $buffer, %ecx # move the address of the buffer to %ecx
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movl $BUFSIZ, %edx # move the size of the buffer to %edx
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int $0x80
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# check if end of file has been reached
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cmpl $0, %eax
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jz .done # if so, jump to .done
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# parse the line and check if it satisfies the condition
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call sscanf
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movl %eax, %edi
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movl %ebx, %esi
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movl %ecx, %ebp
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movl %edx, %ebx
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cmpl %edi, %ebp
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jl .not_contained
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cmpl %esi, %ebx
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jg .not_contained
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incl %eax # increment count
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.not_contained:
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incl %ebx # increment loop variable
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jmp .loop # repeat the loop
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.done:
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# print the result
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movl $1, %eax # set the number of the "write" syscall to 1
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movl $1, %ebx # set the file descriptor to stdout (1)
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movl $result, %ecx # move the address of the result string to %ecx
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movl %eax, %edx # move the count to %edx
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int $0x80
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# close the file
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movl $6, %eax # set the number of the "close" syscall to 6
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movl %ecx, %ebx # move the file descriptor to %ebx
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int $0x80
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leave
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ret
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