在分析linux內(nèi)核編譯流程的時候，看到arch/arm/boot/comPRessed/piggy.gzip.S將壓縮后的Linux內(nèi)核（arch/arm/boot/compressed/piggy.gzip）包含進(jìn)來:

   1: .section .piggydata,#alloc

   2: .globl    input_data

   3: t_data:

   4: .incbin    "arch/arm/boot/compressed/piggy.gzip"

   5: .globl    input_data_end

   6: t_data_end:

我們是不是也可以利用這種方法將一副圖片作為可執(zhí)行程序的一個段，然后再程序中訪問這個段來達(dá)到顯示圖片的目的？下面是我的做法：

仿照piggy.gzip.S實(shí)現(xiàn)demo.S:

   1: .section .peng

   2: .incbin "./logo.jpg"

main.c

   1: #include <stdio.h>

   2:  

   3: extern unsigned int __peng_start;

   4: extern unsigned int __peng_end;

   5:  

   6: char *p = (char *)(&__peng_start);

   7: //我們要獲取__peng_start的存放地址，作為字符串首地址，或者數(shù)組名來使用。

   8: int main(int argc, const char *argv[])

   9: {

  10:     int i;

  11:     unsigned int len = 0;

  12:  

  13:     len = (unsigned int)(&__peng_end) - (unsigned int)(&__peng_start);

  14:  

  15:     printf("len = %x/n", len);

  16:  

  17:     printf("%p/n", &__peng_start);

  18:     printf("%p/n", &__peng_end);

  19:  

  20:     for(i=0; i<len; i++)

  21:     {

  22:         if (i % 16 == 0)

  23:         {

  24:             printf("/n");

  25:         }

  26:         printf("%3x ", *p++&0xff);

  27:     }

  28:  

  29:  

  30:     return 0;

  31: }

Makefile

load.lds

   1: OUTPUT_FORMAT("elf32-i386", "elf32-i386",

   2:           "elf32-i386")

   3: OUTPUT_ARCH(i386)

   4: ENTRY(_start)

   5: SEARCH_DIR("/usr/i486-linux-gnu/lib32"); SEARCH_DIR("/usr/local/lib32"); SEARCH_DIR("/lib32"); SEARCH_DIR("/usr/lib32"); SEARCH_DIR("/usr/i486-linux-gnu/lib"); SEARCH_DIR("/usr/local/lib"); SEARCH_DIR("/lib"); SEARCH_DIR("/usr/lib");

   6: SECTIONS

   7: {

   8:   /* Read-only sections, merged into text segment: */

   9:   PROVIDE (__executable_start = SEGMENT_START("text-segment", 0x08048000)); . = SEGMENT_START("text-segment", 0x08048000) + SIZEOF_HEADERS;

  10:   .interp         : { *(.interp) }

  11:   .note.gnu.build-id : { *(.note.gnu.build-id) }

  12:   .hash           : { *(.hash) }

  13:   .gnu.hash       : { *(.gnu.hash) }

  14:   .dynsym         : { *(.dynsym) }

  15:   .dynstr         : { *(.dynstr) }

  16:   .gnu.version    : { *(.gnu.version) }

  17:   .gnu.version_d  : { *(.gnu.version_d) }

  18:   .gnu.version_r  : { *(.gnu.version_r) }

  19:   .peng :