#include<iostream>
usingnamespace std;
intFactorialTail(int n,int sum)
{
if(n <0){return0;}
elseif(n ==0){return1;}
elseif(n ==1){return sum;}
else{returnFactorialTail(n -1, n * sum);}
}
int main()
{
cout <<FactorialTail(5,1)<< endl;
return0;
}
g++-S hello.cpp
g++ -g -c hello.cpp
objdump -S hello.o > hello_objdump.s
第二種方式:ios
使用GNU C Assembler的列表功能來完成,例如:測試
g++-c -g -Wa,-adlhn hello.cpp > gnu.s
這個命令的說明以下:
-Wa,option :把選項option傳遞給彙編器.若是option含有逗號,就在逗號處分割成多個選項.也就是Gas,至於Gas的命令參數,能夠查看相應的文檔,其中-a[cdghlns]參數的做用是打開列表功能。spa
這種方式能夠顯示足夠的信息,可是命令稍微複雜,參數比較多,不太容易選擇。命令行
Gas的命令行參數概要信息摘錄以下:調試
1: a: -a[cdghlns] enable listings
2: alternate: --alternate enable alternate macro syntax
3: D: -D for compatibility
4: f: -f to work faster
5: I: -I for .include search path
6: K: -K for difference tables
7: L: -L to retain local symbols
8: listing: --listing-XXX to configure listing output
9: M: -M or --mri to assemble in MRI compatibility mode
10: MD: --MD for dependency tracking
11: o: -o to name the object file
12: R: -R to join data and text sections
13: statistics: --statistics to see statistics about assembly
14: traditional-format: --traditional-format for compatible output
15: v: -v to announce version
16: W: -W, --no-warn, --warn, --fatal-warnings to control warnings
17: Z: -Z to make object file even after errors
生成含有調試信息、CPP源代碼的彙編代碼:code