Back to index

glibc  2.9
Functions
setjmp.c File Reference
#include <setjmp.h>
This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Functions

int __sigsetjmp (jmp_buf env, int savemask)

Function Documentation

int __sigsetjmp ( jmp_buf  env,
int  savemask 
)

Definition at line 32 of file setjmp.c.

{
  /* Save data registers D1 through D7.  */
  asm volatile ("movem%.l %/d1-%/d7, %0"
              : : "m" (env[0].__jmpbuf[0].__dregs[0]));

  /* Save return address in place of register A0.  */
  env[0].__jmpbuf[0].__aregs[0] = __builtin_return_address (0);

  /* Save address registers A1 through A5.  */
  asm volatile ("movem%.l %/a1-%/a5, %0"
              : : "m" (env[0].__jmpbuf[0].__aregs[1]));

  /* Save caller's FP, not our own.  */
  env[0].__jmpbuf[0].__fp = *(int **) __builtin_frame_address (0);

  /* Save caller's SP, not our own.  */
  env[0].__jmpbuf[0].__sp = (int *) __builtin_frame_address (0) + 2;

#if defined __HAVE_68881__ || defined __HAVE_FPU__
  /* Save floating-point (68881) registers FP0 through FP7.  */
  asm volatile ("fmovem%.x %/fp0-%/fp7, %0"
              : : "m" (env[0].__jmpbuf[0].__fpregs[0]));
#elif defined (__mcffpu__)
  asm volatile ("fmovem %/fp0-%/fp7, %0"
              : : "m" (env[0].__jmpbuf[0].__fpregs[0]));
#endif

#if defined NOT_IN_libc && defined IS_IN_rtld
  /* In ld.so we never save the signal mask.  */
  return 0;
#else
  /* Save the signal mask if requested.  */
  return __sigjmp_save (env, savemask);
#endif
}

Here is the call graph for this function: