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ptrace.h

#ifndef _BFIN_PTRACE_H
#define _BFIN_PTRACE_H

/*
 * GCC defines register number like this:
 * -----------------------------
 *       0 - 7 are data registers R0-R7
 *       8 - 15 are address registers P0-P7
 *      16 - 31 dsp registers I/B/L0 -- I/B/L3 & M0--M3
 *      32 - 33 A registers A0 & A1
 *      34 -    status register
 * -----------------------------
 *
 * We follows above, except:
 *      32-33 --- Low 32-bit of A0&1
 *      34-35 --- High 8-bit of A0&1
 */

#ifndef __ASSEMBLY__

/* this struct defines the way the registers are stored on the
   stack during a system call. */

struct pt_regs {
      long orig_pc;
      long ipend;
      long seqstat;
      long rete;
      long retn;
      long retx;
      long pc;          /* PC == RETI */
      long rets;
      long reserved;          /* Used as scratch during system calls */
      long astat;
      long lb1;
      long lb0;
      long lt1;
      long lt0;
      long lc1;
      long lc0;
      long a1w;
      long a1x;
      long a0w;
      long a0x;
      long b3;
      long b2;
      long b1;
      long b0;
      long l3;
      long l2;
      long l1;
      long l0;
      long m3;
      long m2;
      long m1;
      long m0;
      long i3;
      long i2;
      long i1;
      long i0;
      long usp;
      long fp;
      long p5;
      long p4;
      long p3;
      long p2;
      long p1;
      long p0;
      long r7;
      long r6;
      long r5;
      long r4;
      long r3;
      long r2;
      long r1;
      long r0;
      long orig_r0;
      long orig_p0;
      long syscfg;
};

/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
#define PTRACE_GETREGS            12
#define PTRACE_SETREGS            13      /* ptrace signal  */

#define PTRACE_GETFDPIC           31
#define PTRACE_GETFDPIC_EXEC      0
#define PTRACE_GETFDPIC_INTERP    1

#define PS_S  (0x0002)

#ifdef __KERNEL__

/* user_mode returns true if only one bit is set in IPEND, other than the
   master interrupt enable.  */
#define user_mode(regs) (!(((regs)->ipend & ~0x10) & (((regs)->ipend & ~0x10) - 1)))
#define instruction_pointer(regs) ((regs)->pc)
#define profile_pc(regs) instruction_pointer(regs)
extern void show_regs(struct pt_regs *);

#endif  /*  __KERNEL__  */

#endif                        /* __ASSEMBLY__ */

/*
 * Offsets used by 'ptrace' system call interface.
 */

#define PT_R0 204
#define PT_R1 200
#define PT_R2 196
#define PT_R3 192
#define PT_R4 188
#define PT_R5 184
#define PT_R6 180
#define PT_R7 176
#define PT_P0 172
#define PT_P1 168
#define PT_P2 164
#define PT_P3 160
#define PT_P4 156
#define PT_P5 152
#define PT_FP 148
#define PT_USP 144
#define PT_I0 140
#define PT_I1 136
#define PT_I2 132
#define PT_I3 128
#define PT_M0 124
#define PT_M1 120
#define PT_M2 116
#define PT_M3 112
#define PT_L0 108
#define PT_L1 104
#define PT_L2 100
#define PT_L3 96
#define PT_B0 92
#define PT_B1 88
#define PT_B2 84
#define PT_B3 80
#define PT_A0X 76
#define PT_A0W 72
#define PT_A1X 68
#define PT_A1W 64
#define PT_LC0 60
#define PT_LC1 56
#define PT_LT0 52
#define PT_LT1 48
#define PT_LB0 44
#define PT_LB1 40
#define PT_ASTAT 36
#define PT_RESERVED 32
#define PT_RETS 28
#define PT_PC 24
#define PT_RETX 20
#define PT_RETN 16
#define PT_RETE 12
#define PT_SEQSTAT 8
#define PT_IPEND 4

#define PT_SYSCFG 216
#define PT_TEXT_ADDR 220
#define PT_TEXT_END_ADDR 224
#define PT_DATA_ADDR 228
#define PT_FDPIC_EXEC 232
#define PT_FDPIC_INTERP 236

#endif                        /* _BFIN_PTRACE_H */

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