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Annotation of coherent/a/usr/include.b4ps2/sys/ptrace.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Coherent.
        !             3:  * Process trace.
        !             4:  */
        !             5: #ifndef         PTRACE_H
        !             6: #define         PTRACE_H
        !             7: #include <sys/types.h>
        !             8: 
        !             9: /*
        !            10:  * Structure used for communication between parent and child.
        !            11:  */
        !            12: struct ptrace {
        !            13:        int      pt_req;                /* Request */
        !            14:        int      pt_pid;                /* Process id */
        !            15:        vaddr_t  pt_addr;               /* Address */
        !            16:        int      pt_data;               /* Data */
        !            17:        int      pt_errs;               /* Error status */
        !            18:        int      pt_rval;               /* Return value */
        !            19:        int      pt_busy;               /* In use */
        !            20:        GATE     pt_gate;               /* Gate */
        !            21: };
        !            22: 
        !            23: 
        !            24: /*
        !            25:  * Commands for ptrace() system call.  First argument is one of these.
        !            26:  */
        !            27: #define PTRACE_SETUP   0       /* init called by child */
        !            28: #define PTRACE_RD_TXT  1       /* parent reads child text */
        !            29: #define PTRACE_RD_DAT  2       /* parent reads child data */
        !            30: #define PTRACE_RD_USR  3       /* parent reads child u area */
        !            31: #define PTRACE_WR_TXT  4       /* parent writes child text */
        !            32: #define PTRACE_WR_DAT  5       /* parent writes child data */
        !            33: #define PTRACE_WR_USR  6       /* parent writes child u area */
        !            34: #define PTRACE_RESUME  7       /* resume child, maybe fake signal to child */
        !            35: #define PTRACE_TERM    8       /* terminate child */
        !            36: #define PTRACE_SSTEP   9       /* single-step child, maybe fake sig to child */
        !            37: 
        !            38: /*
        !            39:  * Pseudo offsets of registers in USR segment.
        !            40:  *
        !            41:  * When ptracing a process, the parent can access the register set
        !            42:  * of the child using PTRACE_RD_USR and PTRACE_WR_USR commands and
        !            43:  * an addr (third argument to the system call) from the following list.
        !            44:  *
        !            45:  * There are two ESP values available:
        !            46:  *     PTRACE_UESP selects the user stack pointer - value from the child
        !            47:  *       process saved on entry to, e.g., the debug trap handler.
        !            48:  *       PTRACE_SS gives access to the corresponding stack selector.
        !            49:  *     PTRACE_ESP is the stack pointer used by the trap handler itself.
        !            50:  *
        !            51:  * PTRACE_ERR will have the fault or trap number in case of exceptions.
        !            52:  *
        !            53:  * PTRACE_SIG is the current signal number.
        !            54:  *
        !            55:  * PTRACE_UEND is the size of accessible u area plus one - addresses
        !            56:  *   greater than or equal to this value are not valid in ptrace
        !            57:  *   read/write of USR segment.
        !            58:  */
        !            59: /* CPU trap frame - see sys/reg.h and ieeefp.h (struct _fpstackframe) */
        !            60: #define        PTRACE_GS       0
        !            61: #define        PTRACE_FS       4
        !            62: #define        PTRACE_ES       8
        !            63: #define        PTRACE_DS       12
        !            64: #define        PTRACE_EDI      16
        !            65: #define        PTRACE_ESI      20
        !            66: #define        PTRACE_EBP      24
        !            67: #define        PTRACE_ESP      28
        !            68: #define        PTRACE_EBX      32
        !            69: #define        PTRACE_EDX      36
        !            70: #define        PTRACE_ECX      40
        !            71: #define        PTRACE_EAX      44
        !            72: #define PTRACE_TRAPNO  48
        !            73: #define        PTRACE_ERR      52
        !            74: #define        PTRACE_EIP      56
        !            75: #define        PTRACE_CS       60
        !            76: #define        PTRACE_EFL      64
        !            77: #define        PTRACE_UESP     68
        !            78: #define        PTRACE_SS       72
        !            79: #define        PTRACE_SIG      76
        !            80: 
        !            81: /* NDP context - see ieeefp.h (struct _fpstate) */
        !            82: #define        PTRACE_FP_CW    80
        !            83: #define        PTRACE_FP_SW    84
        !            84: #define        PTRACE_FP_TAG   88
        !            85: #define        PTRACE_FP_EIP   92
        !            86: #define        PTRACE_FP_CS    96
        !            87: #define        PTRACE_FP_FOO   100
        !            88: #define        PTRACE_FP_FS    104
        !            89: #define        PTRACE_FP_ST0   108
        !            90: #define        PTRACE_FP_ST1   118
        !            91: #define        PTRACE_FP_ST2   128
        !            92: #define        PTRACE_FP_ST3   138
        !            93: #define        PTRACE_FP_ST4   148
        !            94: #define        PTRACE_FP_ST5   158
        !            95: #define        PTRACE_FP_ST6   168
        !            96: #define        PTRACE_FP_ST7   178
        !            97: #define        PTRACE_FP_STAT  188
        !            98: 
        !            99: /* Debug context */
        !           100: #define        PTRACE_DR0      192
        !           101: #define        PTRACE_DR1      196
        !           102: #define        PTRACE_DR2      200
        !           103: #define        PTRACE_DR3      204
        !           104: #define        PTRACE_DR4      208
        !           105: #define        PTRACE_DR5      212
        !           106: #define        PTRACE_DR6      216
        !           107: #define        PTRACE_DR7      220
        !           108: 
        !           109: #define        PTRACE_UEND     224     /* Offsets >= UEND are not valid */
        !           110: 
        !           111: #ifdef KERNEL
        !           112: /*
        !           113:  * Global variables.
        !           114:  */
        !           115: extern struct  ptrace pts;                     /* Ptrace structure */
        !           116: 
        !           117: #endif
        !           118: 
        !           119: #endif

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