LXR linux/arch/cris/include/arch-v10/arch/ptrace.h

   1#ifndef _CRIS_ARCH_PTRACE_H
   2#define _CRIS_ARCH_PTRACE_H
   3
   4/* Frame types */
   5
   6#define CRIS_FRAME_NORMAL   0 /* normal frame without SBFS stacking */
   7#define CRIS_FRAME_BUSFAULT 1 /* frame stacked using SBFS, need RBF return
   8                                 path */
   9
  10/* Register numbers in the ptrace system call interface */
  11
  12#define PT_FRAMETYPE 0
  13#define PT_ORIG_R10  1
  14#define PT_R13       2
  15#define PT_R12       3
  16#define PT_R11       4
  17#define PT_R10       5
  18#define PT_R9        6
  19#define PT_R8        7
  20#define PT_R7        8
  21#define PT_R6        9
  22#define PT_R5        10
  23#define PT_R4        11
  24#define PT_R3        12
  25#define PT_R2        13
  26#define PT_R1        14
  27#define PT_R0        15
  28#define PT_MOF       16
  29#define PT_DCCR      17
  30#define PT_SRP       18
  31#define PT_IRP       19    /* This is actually the debugged process' PC */
  32#define PT_CSRINSTR  20    /* CPU Status record remnants -
  33                              valid if frametype == busfault */
  34#define PT_CSRADDR   21
  35#define PT_CSRDATA   22
  36#define PT_USP       23    /* special case - USP is not in the pt_regs */
  37#define PT_MAX       23
  38
  39/* Condition code bit numbers.  The same numbers apply to CCR of course,
  40   but we use DCCR everywhere else, so let's try and be consistent.  */
  41#define C_DCCR_BITNR 0
  42#define V_DCCR_BITNR 1
  43#define Z_DCCR_BITNR 2
  44#define N_DCCR_BITNR 3
  45#define X_DCCR_BITNR 4
  46#define I_DCCR_BITNR 5
  47#define B_DCCR_BITNR 6
  48#define M_DCCR_BITNR 7
  49#define U_DCCR_BITNR 8
  50#define P_DCCR_BITNR 9
  51#define F_DCCR_BITNR 10
  52
  53/* pt_regs not only specifices the format in the user-struct during
  54 * ptrace but is also the frame format used in the kernel prologue/epilogues 
  55 * themselves
  56 */
  57
  58struct pt_regs {
  59        unsigned long frametype;  /* type of stackframe */
  60        unsigned long orig_r10;
  61        /* pushed by movem r13, [sp] in SAVE_ALL, movem pushes backwards */
  62        unsigned long r13;
  63        unsigned long r12;
  64        unsigned long r11;
  65        unsigned long r10;
  66        unsigned long r9;
  67        unsigned long r8;
  68        unsigned long r7;
  69        unsigned long r6;
  70        unsigned long r5;
  71        unsigned long r4;
  72        unsigned long r3;
  73        unsigned long r2;
  74        unsigned long r1;
  75        unsigned long r0;
  76        unsigned long mof;
  77        unsigned long dccr;
  78        unsigned long srp;
  79        unsigned long irp; /* This is actually the debugged process' PC */
  80        unsigned long csrinstr;
  81        unsigned long csraddr;
  82        unsigned long csrdata;
  83};
  84
  85/* switch_stack is the extra stuff pushed onto the stack in _resume (entry.S)
  86 * when doing a context-switch. it is used (apart from in resume) when a new
  87 * thread is made and we need to make _resume (which is starting it for the
  88 * first time) realise what is going on.
  89 *
  90 * Actually, the use is very close to the thread struct (TSS) in that both the
  91 * switch_stack and the TSS are used to keep thread stuff when switching in
  92 * _resume.
  93 */
  94
  95struct switch_stack {
  96        unsigned long r9;
  97        unsigned long r8;
  98        unsigned long r7;
  99        unsigned long r6;
 100        unsigned long r5;
 101        unsigned long r4;
 102        unsigned long r3;
 103        unsigned long r2;
 104        unsigned long r1;
 105        unsigned long r0;
 106        unsigned long return_ip; /* ip that _resume will return to */
 107};
 108
 109#ifdef __KERNEL__
 110
 111/* bit 8 is user-mode flag */
 112#define user_mode(regs) (((regs)->dccr & 0x100) != 0)
 113#define instruction_pointer(regs) ((regs)->irp)
 114#define profile_pc(regs) instruction_pointer(regs)
 115
 116#endif  /*  __KERNEL__  */
 117
 118#endif
 119