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[/] [or1k/] [trunk/] [gdb-5.0/] [gdb/] [osf-share/] [cma_debug_client.h] - Blame information for rev 1765

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1 106 markom
/*
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 * (c) Copyright 1990-1996 OPEN SOFTWARE FOUNDATION, INC.
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 * (c) Copyright 1990-1996 HEWLETT-PACKARD COMPANY
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 * (c) Copyright 1990-1996 DIGITAL EQUIPMENT CORPORATION
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 * (c) Copyright 1991, 1992 Siemens-Nixdorf Information Systems
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 * To anyone who acknowledges that this file is provided "AS IS" without
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 * any express or implied warranty: permission to use, copy, modify, and
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 * distribute this file for any purpose is hereby granted without fee,
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 * provided that the above copyright notices and this notice appears in
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 * all source code copies, and that none of the names listed above be used
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 * in advertising or publicity pertaining to distribution of the software
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 * without specific, written prior permission.  None of these organizations
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 * makes any representations about the suitability of this software for
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 * any purpose.
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 */
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/*
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 *      Header file providing access to CMA clients that implement
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 *      language run-times to the CMA debugger capabilities.
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 *
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 *      NOTE: the clients that are able to use this interface is
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 *      very limited because clients needing task debugging must have
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 *      support in the system debugger as well as here (at present).
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 *      The following are the only legitimate clients of this interface:
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 *      ADA runtime, C++ tasking library, and CMA.
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 *
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 *FIX-ME* We shall endeavor to extend these capabilities so that the
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 *      all-platform CMA debugger CMA_DEBUG and any client can layer
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 *      on thread debugging.  But that is still an open design problem.
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 *      The design here does not preclude that extension (for example,
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 *      the identity of the debug-client is indicated in an "open"
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 *      manner by using the CMA context key as the identifier.
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 */
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#ifndef CMA_DEBUG_CLIENT
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#define CMA_DEBUG_CLIENT
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/*
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 *  INCLUDE FILES
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 */
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#include <cma.h>
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/*
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 * CONSTANTS AND MACROS
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 */
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/*
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 * TYPEDEFS
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 */
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/*
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 * Type describing constants for a valid TCB sentinel.
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 * Exactly one value is valid, but we provide a symbolic name for
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 * at least one invalid sentinel as a convenience.
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 */
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typedef enum CMA_T_TCB_SENTINEL {
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        cma_c_tcb_sentinel_nogood = 0,   /* Invalid sentinel constant */
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        cma_c_tcb_sentinel = 0x0ACEFACE /* Valid TCB sentinel */
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        } cma_t_tcb_sentinel;
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/*
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 * Type describing pad fields needed to align the "standard prolog"
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 * to the right byte at the front of each TCB.  These fields are
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 * free to be put to any use by the client.
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 *
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 * This is 32 bytes long and is fixed at this size for all clients
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 * and CMA, for all time.
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 */
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typedef struct CMA_T_TCB_PRIVATE {
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    cma_t_integer       pad1;
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    cma_t_integer       pad2;
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    cma_t_integer       pad3;
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    cma_t_integer       pad4;
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    cma_t_integer       pad5;
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    cma_t_integer       pad6;
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    cma_t_integer       pad7;
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    cma_t_integer       pad8;
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    } cma_t_tcb_private;
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/*
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 * Type describing the "standard prolog" that clients should use
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 * within their task control blocks.  We assume that the client will
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 * store their "task control block" as a per-thread context under
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 * the context key specified here.
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 */
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typedef struct CMA_T_TCB_PROLOG {
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    cma_t_tcb_sentinel  sentinel;       /* Validity sentinel */
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    cma_t_thread        client_thread;  /* Thread corresonding to task */
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    cma_t_key           client_key;     /* Context key this is stored under */
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    cma_t_address       reserved1;      /* Must be zero, reserved to CMA */
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    } cma_t_tcb_prolog;
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/*
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 * Type defining the layout of all TCBs and TASKS.  This format
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 * ensures that tasks will be self-identifying to the debugger.
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 * this layout must never change as the CMA DEBUG Clients cannot
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 * be changed after CMA ships.
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 */
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typedef struct CMA_T_TCB_HEADER {
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    cma_t_tcb_private   IGNORED;        /* TCB fields private to the client */
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    cma_t_tcb_prolog    prolog;         /* The standard prolog goes here */
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    } cma_t_tcb_header;
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/*
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 * Type describing the kinds of information that a CMA debug
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 * client can GET about a thread.
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 */
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typedef enum CMA_T_DEBUG_GET {
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        /*
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         * All of the following items use a buffer whose size is
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         * four bytes.  (That is four must be passed as the buffer_size
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         * parameter to cma_debug_get.)
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         */
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        cma_c_debget_guardsize = 1,     /* Current guard size (bytes) */
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        cma_c_debget_is_held = 2,       /* Is it on hold? */
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        cma_c_debget_is_initial = 3,    /* Is it the initial thread? */
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        cma_c_debget_number = 4,        /* Thread's number */
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        cma_c_debget_stack_ptr = 5,     /* Current stack pointer */
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        cma_c_debget_stack_base = 6,    /* Stack base address */
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        cma_c_debget_stack_top  = 7,    /* Stack top address */
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        cma_c_debget_sched_state = 8,   /* Scheduler state
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                                         *      0 - run
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                                         *      1 - ready
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                                         *      2 - blocked
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                                         *      3 - terminated
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                                         */
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        cma_c_debget_reserve_size = 9,  /* Size of stack reserve (bytes) */
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        cma_c_debget_base_prio = 10,    /* Base priority */
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        cma_c_debget_priority = 11,     /* Current priority */
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        cma_c_debget_regs = 12,         /* Register set (and proc. state) */
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        cma_c_debget_alt_pending = 13,  /* Alert is pending */
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        cma_c_debget_alt_a_enable = 14, /* Asynch alert delivery enabled */
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        cma_c_debget_alt_g_enable = 15, /* General alert delivery enabled */
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        cma_c_debget_substate = 16,     /* Substate (or wait state) */
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        cma_c_debget_object_addr = 17,  /* Address of thread object */
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        cma_c_debget_thkind = 18,       /* Kind of thread */
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        cma_c_debget_detached   = 19,   /* Thread is detached */
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        cma_c_debget_tcb_size   = 20,   /* TCB size */
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        cma_c_debget_start_pc   = 21,   /* Start address */
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        cma_c_debget_next_pc    = 22,   /* Next instruction */
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        cma_c_debget_policy     = 23,   /* Sched policy */
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        cma_c_debget_stack_yellow = 24, /* Addr of start of guard area */
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        cma_c_debget_stack_default = 25 /* True if on default stack */
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        } cma_t_debug_get;
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/*
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 * Type describing the kinds of information that a CMA debug
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 * client can SET (or change) about a thread using cma_debug_set.
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 */
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typedef enum CMA_T_DEBUG_SET {
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        /*
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         * All of the following items use a buffer whose size is
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         * four bytes.  (That is four must be passed as the buffer_size
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         * parameter to cma_debug_set.)
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         */
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        cma_c_debset_priority   = 1,    /* Set the priority */
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        cma_c_debset_policy     = 2,    /* Set the sched policy */
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        cma_c_debset_hold       = 3,    /* Put thread on hold */
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        cma_c_debset_regs       = 4     /* Set the regs and proc. state */
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        } cma_t_debug_set;
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/*
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 *  GLOBAL DATA
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 *
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 *      none
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 */
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/*
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 * EXTERNAL INTERFACES
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 */
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/*
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 * Routine to register with the CMA debug dispatcher.
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 */
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extern void     cma_debug_register (cma_t_address,cma_t_key,cma_t_integer,cma_t_boolean);
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/*
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 * Routine to get get thread state needed by the CMA debug client.
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 */
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extern void     cma_debug_get (cma_t_thread *,cma_t_debug_get,cma_t_address,cma_t_integer);
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/*
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 * Get thread context given an sp and a key
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 */
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extern void cma_debug_get_sp_context    (cma_t_address,cma_t_key,cma_t_address *);
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/*
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 * Routine to set thread state as needed by the CMA debug client.
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 */
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extern void     cma_debug_set (cma_t_thread *,cma_t_debug_set,cma_t_address,cma_t_integer);
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#endif

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