arch/.unmaintained/all-netbsd/exec/sigcore.h

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #ifndef _SIGCORE_H
   7 #define _SIGCORE_H
   8
   9 #include <signal.h>
  10 #include <errno.h>
  11 #include "etask.h"
  12
  13 /* Put a value of type SP_TYPE on the stack or get it off the stack. */
  14 #define _PUSH(sp,val)       (*--sp = (SP_TYPE)(val))
  15 #define _POP(sp)            (*sp++)
  16
  17 typedef struct sigcontext sigcontext_t;
  18 #define SIGHANDLER      bsd_sighandler
  19 #define SIGHANDLER_T    void *
  20 //__sighandler_t *
  21
  22 #define SP_TYPE         long
  23 #define CPU_NUMREGS     0
  24
  25 #define SC_DISABLE(sc)   (sc->sc_mask = sig_int_mask)
  26 #define SC_ENABLE(sc)    (sigemptyset(&sc->sc_mask))
  27
  28 #define SP(sc)       (sc->sc_esp)
  29 #define FP(sc)       (sc->sc_ebp)
  30 #define PC(sc)       (sc->sc_eip)
  31
  32 #define R0(sc)           (sc->sc_eax)
  33 #define R1(sc)           (sc->sc_ebx)
  34 #define R2(sc)           (sc->sc_ecx)
  35 #define R3(sc)           (sc->sc_edx)
  36 #define R4(sc)           (sc->sc_edi)
  37 #define R5(sc)           (sc->sc_esi)
  38 #define R6(sc)           (sc->sc_eflags)
  39 //isp)
  40
  41 struct AROS_cpu_context
  42 {
  43     ULONG regs[7];      /* eax, ebx, ecx, edx, edi, esi, isp */
  44     ULONG pc,fp;        /* store these on the stack to avoid sighandlers */
  45     int errno_backup;
  46 };
  47
  48 #define SIZEOF_ALL_REGISTERS    (sizeof(struct AROS_cpu_context))
  49 #define GetCpuContext(task)     ((struct AROS_cpu_context *)\
  50                                 (GetIntETask(task)->iet_Context))
  51 #define GetSP(task)             ((SP_TYPE*)(task->tc_SPReg))
  52
  53 #define GLOBAL_SIGNAL_INIT \
  54         static void sighandler (int sig, sigcontext_t * sc); \
  55                                                              \
  56         static void SIGHANDLER (int sig, int code, struct sigcontext *sc) \
  57         {                                                    \
  58             sighandler( sig, (sigcontext_t*)sc);       \
  59         }
  60
  61 #define SAVE_CPU(task, sc) \
  62         (GetCpuContext(task)->regs[0] = R0(sc)), \
  63         (GetCpuContext(task)->regs[1] = R1(sc)), \
  64         (GetCpuContext(task)->regs[2] = R2(sc)), \
  65         (GetCpuContext(task)->regs[3] = R3(sc)), \
  66         (GetCpuContext(task)->regs[4] = R4(sc)), \
  67         (GetCpuContext(task)->regs[5] = R5(sc)), \
  68         (GetCpuContext(task)->regs[6] = R6(sc))
  69
  70 #define RESTORE_CPU(task,sc) \
  71         ((R0(sc) = GetCpuContext(task)->regs[0]), \
  72         (R1(sc) = GetCpuContext(task)->regs[1]), \
  73         (R2(sc) = GetCpuContext(task)->regs[2]), \
  74         (R3(sc) = GetCpuContext(task)->regs[3]), \
  75         (R4(sc) = GetCpuContext(task)->regs[4]), \
  76         (R5(sc) = GetCpuContext(task)->regs[5]), \
  77         (R6(sc) = GetCpuContext(task)->regs[6]))
  78
  79 #define SAVE_ERRNO(task) \
  80         (GetCpuContext(task)->errno_backup = errno)
  81
  82 #define RESTORE_ERRNO(task) \
  83         (errno = GetCpuContext(task)->errno_backup)
  84
  85 #define HAS_FPU         0
  86 #define SAVE_FPU(task,sc)       /* nop */
  87 #define RESTORE_FPU(task,sc)    /* nop */
  88
  89 #define PREPARE_INITIAL_FRAME(sp,pc)    /* nop */
  90
  91 #define PREPARE_INITIAL_CONTEXT(task,startpc) \
  92         ( GetCpuContext(task)->pc = (ULONG)startpc, \
  93           GetCpuContext(task)->fp = 0 )
  94
  95 #define SAVEREGS(task,sc) \
  96         ((GetSP(task) = (long *)SP(sc)), \
  97         (GetCpuContext(task)->pc = PC(sc)), \
  98         (GetCpuContext(task)->fp = FP(sc)), \
  99         /* SAVE_FPU(task, sc), */ \
 100         SAVE_CPU(task, sc), \
 101         SAVE_ERRNO(task))
 102
 103 #define RESTOREREGS(task,sc) \
 104         (RESTORE_ERRNO(task), \
 105         RESTORE_CPU(task,sc), \
 106         /* RESTORE_FPU(task, sc), */ \
 107         (FP(sc) = GetCpuContext(task)->fp), \
 108         (PC(sc) = GetCpuContext(task)->pc)), \
 109         (SP(sc) = (long)GetSP(task))
 110
 111 #define PRINT_SC(sc) \
 112         printf ("    SP=%08lx  FP=%08lx  PC=%08lx  FPU=%s\n" \
 113                 "    R0=%08lx  R1=%08lx  R2=%08lx  R3=%08lx\n" \
 114                 "    R4=%08lx  R5=%08lx  R6=%08lx\n" \
 115             , SP(sc), FP(sc), PC(sc) \
 116             , HAS_FPU(sc) ? "yes" : "no" \
 117             , R0(sc), R1(sc), R2(sc), R3(sc) \
 118             , R4(sc), R5(sc), R6(sc) \
 119         )
 120
 121 #define PRINT_CPUCONTEXT(task) \
 122         printf ("    SP=%08lx  FP=%08lx  PC=%08lx\n" \
 123                 "    R0=%08lx  R1=%08lx  R2=%08lx  R3=%08lx\n" \
 124                 "    R4=%08lx  R5=%08lx  R6=%08lx\n" \
 125             , (ULONG)(GetSP(task)) \
 126             , GetCpuContext(task)->fp, GetCpuContext(task)->pc, \
 127             , GetCpuContext(task)->regs[0] \
 128             , GetCpuContext(task)->regs[1] \
 129             , GetCpuContext(task)->regs[2] \
 130             , GetCpuContext(task)->regs[3] \
 131             , GetCpuContext(task)->regs[4] \
 132             , GetCpuContext(task)->regs[5] \
 133             , GetCpuContext(task)->regs[6] \
 134         )
 135
 136 #endif /* _SIGCORE_H */