arch/um/include/shared/longjmp.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __UML_LONGJMP_H
   3 #define __UML_LONGJMP_H
   4
   5 #include <sysdep/archsetjmp.h>
   6 #include <os.h>
   7
   8 extern int signals_enabled;
   9 extern int setjmp(jmp_buf);
  10 extern void longjmp(jmp_buf, int);
  11
  12 #define UML_LONGJMP(buf, val) do { \
  13         longjmp(*buf, val);     \
  14 } while(0)
  15
  16 #define UML_SETJMP(buf) ({                              \
  17         int n, enable;                                  \
  18         enable = *(volatile int *)&signals_enabled;     \
  19         n = setjmp(*buf);                               \
  20         if(n != 0)                                      \
  21                 um_set_signals_trace(enable);           \
  22         n; })
  23
  24 #endif