~/src/binutils-gdb/configure 'CC=ccache gcc-9' 'CXX=ccache g++-9' '--disable-binutils' '--disable-gold' '--disable-ld' '--disable-gprof' '--disable-gas' '--with-python=python3' 'CFLAGS=-g3 -O0 -fdiagnostics-color=always -fmax-errors=1 -fsanitize=address' 'CXXFLAGS=-g3 -O0 -fdiagnostics-color=always -fmax-errors=1 -fsanitize=address' 'LDFLAGS=-fuse-ld=gold -fsanitize=address' '--prefix=/usr' --target=arm-none-eabi

$ cat test.c
void _exit(int n) {
    for (;;);
}

int main() {
    return 0;
}

$ arm-none-eabi-gcc -g3 -O0 test.c -o test
$ ./gdb -nx test -ex "target sim" -ex "load" -ex "b main" -ex r