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#ifndef _I960_PTRACE_H

#define _I960_PTRACE_H

/* this file describes the stack. While our actual stack frame contains only

 * the local registers, a few words before the frame pointer we'll have the

 * PC and AC, so we just consider this structure as if it were the actual

 * regset. Since interrupts save the g-regs, we might as well make those

 * available as well.

 */

/* 16 local registers */

#define PT_R0   0

#define PT_R1   1

#define PT_R2   2

#define PT_R3   3

#define PT_R4   4

#define PT_R5   5

#define PT_R6   6

#define PT_R7   7

#define PT_R8   8

#define PT_R9   9

#define PT_R10  10

#define PT_R11  11

#define PT_R12  12

#define PT_R13  13

#define PT_R14  14

#define PT_R15  15

/* AKAs for local registers */

#define PT_PFP  0

#define PT_SP   1

#define PT_RIP  2

#ifndef __ASSEMBLY__

/* this struct defines the way the registers are stored on the

   stack during system calls and interrupts */

struct pt_regs {

        /* FP - 16 */

        long    pc;             /* processor control reg */

        long    ac;             /* arithmetic control reg */

        unsigned char vecs[4];  /* vecs[3] is irq; rest are reserved */

        long    reserved;

        /* FP */

        long    lregs[16];      /* 16 local regs */

        long    gregs[16];      /* 16 global regs */

};

#ifdef __KERNEL__

#if 1

#define user_mode(regs) (!test_bit(1, &(regs)->pc) )

#else

/*

 * Two cases: if 1st bit of pfp is set, it was a system call from user mode.

 * Otherwise, if the pfp's return field is 7 (i.e., it was an interrupt) we

 * can check the image of the PC. When we're in syscalls, we can't trust the

 * PC image in regs...

 */

#define user_mode(regs) \

( ((regs)->lregs[PT_PFP] & 0x2) || \

(((regs)->lregs[PT_PFP] & 0x7)==0x7 && (!test_bit(1, &(regs)->pc))) )

extern void show_regs(struct pt_regs *);

#endif  /* 0 */

/* get RIP out of previous frame */

#define instruction_pointer(regs)       \

( ((unsigned long*)((regs)->lregs[PT_PFP]))[PT_RIP])

#endif /* __KERNEL__ */

#endif /* __ASSEMBLY__ */

#endif /* _I960_PTRACE_H */