| Code (inc. data) RO Data RW Data ZI Data Debug Object Name
172 10 0 4 0 995 delay.o//delay.c里面,fac_us和fac_ms,共占用4字节
112 12 0 0 0 427 led.o
72 26 304 0 2048 828 startup_stm32f10x_hd.o //启动文件,里面定义了Stack_Size为0X800,所以这里是2048.
712 52 0 0 0 2715 sys.o
348 154 0 6 0 208720 test.o//test.c里面,stack_dir和cpu_endian 以及*addr ,占用6字节.
384 24 0 8 200 3050 usart.o//usart.c定义了一个串口接收数组buffer,占用200字节.
----------------------------------------------------------------------
1800 278 336 20 2248 216735 Object Totals //总共2248+20字节
0 0 32 0 0 0 (incl. Generated)
0 0 0 2 0 0 (incl. Padding)//2字节用于对其 ---------------------------------------------------------------------- Code (inc. data) RO Data RW Data ZI Data Debug Library Member Name 8 0 0 0 0 68 __main.o
104 0 0 0 0 84 __printf.o
52 8 0 0 0 0 __scatter.o
26 0 0 0 0 0 __scatter_copy.o
28 0 0 0 0 0 __scatter_zi.o
48 6 0 0 0 96 _printf_char_common.o
36 4 0 0 0 80 _printf_char_file.o
92 4 40 0 0 88 _printf_hex_int.o
184 0 0 0 0 88 _printf_intcommon.o
0 0 0 0 0 0 _printf_percent.o
4 0 0 0 0 0 _printf_percent_end.o
6 0 0 0 0 0 _printf_x.o
12 0 0 0 0 72 exit.o
8 0 0 0 0 68 ferror.o
6 0 0 0 0 152 heapauxi.o
2 0 0 0 0 0 libinit.o
2 0 0 0 0 0 libinit2.o
2 0 0 0 0 0 libshutdown.o
2 0 0 0 0 0 libshutdown2.o
8 4 0 0 96 68 libspace.o //库文件(printf使用),占用了96字节
24 4 0 0 0 84 noretval__2printf.o
0 0 0 0 0 0 rtentry.o
12 0 0 0 0 0 rtentry2.o
6 0 0 0 0 0 rtentry4.o
2 0 0 0 0 0 rtexit.o
10 0 0 0 0 0 rtexit2.o
74 0 0 0 0 80 sys_stackheap_outer.o
2 0 0 0 0 68 use_no_semi.o
2 0 0 0 0 68 use_no_semi_2.o
450 8 0 0 0 236 faddsub_clz.o
388 76 0 0 0 96 fdiv.o
62 4 0 0 0 84 ffixu.o
38 0 0 0 0 68 fflt_clz.o
258 4 0 0 0 84 fmul.o
140 4 0 0 0 84 fnaninf.o
10 0 0 0 0 68 fretinf.o
0 0 0 0 0 0 usenofp.o ----------------------------------------------------------------------
2118 126 42 0 100 1884 Library Totals //调用的库用了100字节.
10 0 2 0 4 0 (incl. Padding) //用于对其多占用了4个字节 ---------------------------------------------------------------------- Code (inc. data) RO Data RW Data ZI Data Debug Library Name 762 30 40 0 96 1164 c_w.l
1346 96 0 0 0 720 fz_ws.l ----------------------------------------------------------------------
2118 126 42 0 100 1884 Library Totals ---------------------------------------------------------------------- ==============================================================================
Code (inc. data) RO Data RW Data ZI Data Debug
3918 404 378 20 2348 217111 Grand Totals
3918 404 378 20 2348 217111 ELF Image Totals
3918 404 378 20 0 0 ROM Totals ============================================================================== Total RO Size (Code + RO Data) 4296 ( 4.20kB)
Total RW Size (RW Data + ZI Data) 2368 ( 2.31kB) //总共占用:2248+20+100=2368.
Total ROM Size (Code + RO Data + RW Data) 4316 ( 4.21kB) ==============================================================================
通过这个文件,我们就可以分析整个内存,是怎么被占用的,具体到每个文件,占用多少.一目了然了.
4,最后,看看整个测试代码:
main.c代码如下,工程见附件.
#include "sys.h"
#include "usart.h"
#include "delay.h"
#include "led.h"
#include "beep.h"
#include "key.h"
//ALIENTEK战舰STM32开发板堆栈增长方向以及CPU大小端测试 //保存栈增长方向
//0,向下增长;1,向上增长.
static u8 stack_dir; //CPU大小端
//0,小端模式;1,大端模式.
static u8 cpu_endian; | 
