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概要
アセンブラからｃの関数、呼び出して見た。
サンプルコード
import subprocess
import os
def gcc():
s_file = 'main.s'
test_s = """
.code32
.text
.extern test
.global main
main:
call test
mov $4, %eax
mov $1, %ebx
mov $msg, %ecx
mov $6, %edx
int $0x80
ret
.data
msg:
.ascii "hello "
"""
with open(s_file, 'w') as f:
f.write(test_s)
c_file = 'test.c'
test_c = """
# include <stdio.h>
void test()
{
printf("world!");
}
"""
with open(c_file, 'w') as f:
f.write(test_c)
os.system("gcc -no-pie test.c main.s")
os.system("./a.out")
if __name__ == '__main__':
gcc()
成果物
以上。
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