ptrace.h

Go to the documentation of this file.

#ifndef _ASM_SCORE_PTRACE_H
#define _ASM_SCORE_PTRACE_H

#define PTRACE_GETREGS      12
#define PTRACE_SETREGS      13

#define PC      32
#define CONDITION   33
#define ECR     34
#define EMA     35
#define CEH     36
#define CEL     37
#define COUNTER     38
#define LDCR        39
#define STCR        40
#define PSR     41

#define SINGLESTEP16_INSN   0x7006
#define SINGLESTEP32_INSN   0x840C8000
#define BREAKPOINT16_INSN   0x7002      /* work on SPG300 */
#define BREAKPOINT32_INSN   0x84048000  /* work on SPG300 */

/* Define instruction mask */
#define INSN32_MASK 0x80008000

#define J32 0x88008000  /* 1_00010_0000000000_1_000000000000000 */
#define J32M    0xFC008000  /* 1_11111_0000000000_1_000000000000000 */

#define B32 0x90008000  /* 1_00100_0000000000_1_000000000000000 */
#define B32M    0xFC008000
#define BL32    0x90008001  /* 1_00100_0000000000_1_000000000000001 */
#define BL32M   B32
#define BR32    0x80008008  /* 1_00000_0000000000_1_00000000_000100_0 */
#define BR32M   0xFFE0807E
#define BRL32   0x80008009  /* 1_00000_0000000000_1_00000000_000100_1 */
#define BRL32M  BR32M

#define B32_SET (J32 | B32 | BL32 | BR32 | BRL32)

#define J16 0x3000      /* 0_011_....... */
#define J16M    0xF000
#define B16 0x4000      /* 0_100_....... */
#define B16M    0xF000
#define BR16    0x0004      /* 0_000.......0100 */
#define BR16M   0xF00F
#define B16_SET (J16 | B16 | BR16)


/*
 * This struct defines the way the registers are stored on the stack during a
 * system call/exception. As usual the registers k0/k1 aren't being saved.
 */
struct pt_regs {
    unsigned long pad0[6];  /* stack arguments */
    unsigned long orig_r4;
    unsigned long orig_r7;
    long is_syscall;

    unsigned long regs[32];

    unsigned long cel;
    unsigned long ceh;

    unsigned long sr0;  /* cnt */
    unsigned long sr1;  /* lcr */
    unsigned long sr2;  /* scr */

    unsigned long cp0_epc;
    unsigned long cp0_ema;
    unsigned long cp0_psr;
    unsigned long cp0_ecr;
    unsigned long cp0_condition;
};

#ifdef __KERNEL__

struct task_struct;

/*
 * Does the process account for user or for system time?
 */
#define user_mode(regs)     ((regs->cp0_psr & 8) == 8)

#define instruction_pointer(regs)   ((unsigned long)(regs)->cp0_epc)
#define profile_pc(regs)        instruction_pointer(regs)

extern void do_syscall_trace(struct pt_regs *regs, int entryexit);
extern int read_tsk_long(struct task_struct *, unsigned long, unsigned long *);
extern int read_tsk_short(struct task_struct *, unsigned long,
             unsigned short *);

#define arch_has_single_step()  (1)

#endif /* __KERNEL__ */

#endif /* _ASM_SCORE_PTRACE_H */