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jeremybenn |
/*
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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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