Linux libc在哪些平台上存储堆栈cookie值而不是uuu stack\u chk\u guard？

e、 Linux/i386上的g glibc将cookie存储在

%gs:0x14

。除了查看

\uu stack\u chk\u guard

符号外，是否还有其他平台需要查找cookie

---

（这是

gcc-fstack-protector

生成的代码存储在堆栈中的值在函数开始时进行检查，然后返回以防止堆栈崩溃）。

是否从gcc源定义目标线程偏移量的

grep-B1

（或者使用google codesearch在线执行此grep）

对于glibc：

因此，gcc和glibc似乎总是使用同一个位置作为主要平台，可以通过STACK_CHK_GUARD宏访问

gcc4/trunk/gcc-4.4.3/gcc/config/sparc/linux.h 
   168: /* sparc glibc provides __stack_chk_guard in [%g7 + 0x14].  */
   169: #define TARGET_THREAD_SSP_OFFSET        0x14

gcc4/trunk/gcc-4.4.3/gcc/config/sparc/linux64.h 
   302:    sparc64 glibc provides it at [%g7 + 0x28].  */
   303: #define TARGET_THREAD_SSP_OFFSET        (TARGET_ARCH64 ? 0x28 : 0x14)

gcc4/trunk/gcc-4.4.3/gcc/config/s390/linux.h 
    98:    s390x glibc provides it at 0x28(tp).  */
    99: #define TARGET_THREAD_SSP_OFFSET        (TARGET_64BIT ? 0x28 : 0x14)

gcc4/trunk/gcc-4.4.3/gcc/config/i386/linux.h 
   214: /* i386 glibc provides __stack_chk_guard in %gs:0x14.  */
   215: #define TARGET_THREAD_SSP_OFFSET        0x14

gcc4/trunk/gcc-4.4.3/gcc/config/rs6000/linux.h 
   121: /* ppc32 glibc provides __stack_chk_guard in -0x7008(2).  */
   122: #define TARGET_THREAD_SSP_OFFSET        -0x7008

gcc4/trunk/gcc-4.4.3/gcc/config/rs6000/linux64.h 
   525:    ppc64 glibc provides it at -0x7010(13).  */
   526: #define TARGET_THREAD_SSP_OFFSET        (TARGET_64BIT ? -0x7010 : -0x7008)

gcc4/trunk/gcc-4.4.3/gcc/config/i386/linux64.h 
   118:    x86_64 glibc provides it in %fs:0x28.  */
   119: #define TARGET_THREAD_SSP_OFFSET        (TARGET_64BIT ? 0x28 : 0x14)

#ifdef __i386__
# define STACK_CHK_GUARD \
  ({ uintptr_t x; asm ("movl %%gs:0x14, %0" : "=r" (x)); x; })
#elif defined __x86_64__
# define STACK_CHK_GUARD \
  ({ uintptr_t x; asm ("movq %%fs:0x28, %0" : "=r" (x)); x; })
#elif defined __powerpc64__
# define STACK_CHK_GUARD \
  ({ uintptr_t x; asm ("ld %0,-28688(13)" : "=r" (x)); x; })
#elif defined __powerpc__
# define STACK_CHK_GUARD \
  ({ uintptr_t x; asm ("lwz %0,-28680(2)" : "=r" (x)); x; })
#elif defined __sparc__ && defined __arch64__
# define STACK_CHK_GUARD \
  ({ uintptr_t x; asm ("ldx [%%g7+0x28], %0" : "=r" (x)); x; })
#elif defined __sparc__
# define STACK_CHK_GUARD \
  ({ uintptr_t x; asm ("ld [%%g7+0x14], %0" : "=r" (x)); x; })
#elif defined __s390x__
# define STACK_CHK_GUARD \
  ({ uintptr_t x; asm ("ear %0,%%a0; sllg %0,%0,32; ear %0,%%a1; lg %0,0x28(%0)" : "=a" (x)); x; })
#elif defined __s390__
# define STACK_CHK_GUARD \
  ({ uintptr_t x; asm ("ear %0,%%a0; l %0,0x14(%0)" : "=a" (x)); x; })
#elif defined __ia64__
# define STACK_CHK_GUARD \
  ({ uintptr_t x; asm ("adds %0 = -8, r13;; ld8 %0 = [%0]" : "=r" (x)); x; })
#else
extern uintptr_t __stack_chk_guard;
# define STACK_CHK_GUARD __stack_chk_guard
#endif