sys/arch/arm/include/signal.h

   1 #ifndef _ARM_SIGNAL_H_
   2 #define _ARM_SIGNAL_H_
   3
   4 #include <sys/featuretest.h>
   5
   6 typedef int sig_atomic_t;
   7
   8 /* The following structure should match the stackframe_s structure used
   9  * by the kernel's context switching code.  Floating point registers should
  10  * be added in a different struct.
  11  */
  12
  13 #include <machine/stackframe.h>
  14
  15 typedef struct stackframe_s sigregs;
  16 struct sigframe {               /* stack frame created for signalled process */
  17   void (*sf_retadr)(void);
  18   int sf_signo;
  19   int sf_code;
  20   struct sigcontext *sf_scp;
  21   int sf_fp;
  22   void (*sf_retadr2)(void);
  23   struct sigcontext *sf_scpcopy;
  24 };
  25
  26 struct sigcontext {
  27   int trap_style;               /* how should context be restored? KTS_* */
  28   int sc_flags;                 /* sigstack state to restore (including
  29                                  * MF_FPU_INITIALIZED)
  30                                  */
  31   long sc_mask;                 /* signal mask to restore */
  32   sigregs sc_regs;              /* register set to restore */
  33 };
  34
  35 #define sc_retreg sc_regs.retreg
  36 #define sc_r1 sc_regs.r1
  37 #define sc_r2 sc_regs.r2
  38 #define sc_r3 sc_regs.r3
  39 #define sc_r4 sc_regs.r4
  40 #define sc_r5 sc_regs.r5
  41 #define sc_r6 sc_regs.r6
  42 #define sc_r7 sc_regs.r7
  43 #define sc_r8 sc_regs.r8
  44 #define sc_r9 sc_regs.r9
  45 #define sc_r10 sc_regs.r10
  46 #define sc_fp sc_regs.fp
  47 #define sc_r12 sc_regs.r12
  48 #define sc_sp sc_regs.sp
  49 #define sc_lr sc_regs.lr
  50 #define sc_pc sc_regs.pc
  51 #define sc_psr sc_regs.psr
  52
  53 #ifdef _MINIX
  54 __BEGIN_DECLS
  55 int sigreturn(struct sigcontext *_scp);
  56 __END_DECLS
  57 #endif /* _MINIX */
  58
  59 #endif  /* !_ARM_SIGNAL_H_ */