adp.h

这个是LINUX下的GDB调度工具的源码

/* The following flags describe the feature set of the processor: */
/* Set if cpu supports little-endian model [Reference (4)] */
#define ADP_CPU_LE              (1 << 0)
/* Set if cpu supports big-endian model */
#define ADP_CPU_BE              (1 << 1)
/* Set if processor has a cache */
#define ADP_CPU_CACHE           (1 << 2)
/* Set if processor has a MMU */
#define ADP_CPU_MMU             (1 << 3)
/* All other flags are current undefined, and should be zero. */

/* The following flags reflect current Target hardware status: */
/* [Reference (5)] */
/* 0 = no MMU or MMU off; 1 = MMU on */
#define ADP_CPU_MMUOn           (1 << 29)
/* 0 = no cache or cache off; 1 = cache on */
#define ADP_CPU_CacheOn         (1 << 30)
/* 0 = little-endian; 1 = big-endian */
#define ADP_CPU_BigEndian       (1U << 31)
/* All other flags are current undefined, and should be zero. */


#ifdef LINK_RECOVERY

#define ADP_TargetResetIndication       ADPREASON(CI_TBOOT, 1)
/*
 * If parameter negotiation is enabled at the target, it configures itself
 * to various likely parameter settings and sends this message at each
 * configuration.  The message describes the default settings, and after
 * sending at each configuration the target sets itself to the defaults
 * it has just broadcast, to await either an ack on TBOOT or a request
 * or reset indication on HBOOT.
 *
 * If the host receives this message successfully, it should reset to the
 * indicated parameters and send a reply.
 *
 * Message arguments:
 *      word    status                   (always 0, makes body same as
 *                                        ADP_ParamNegotiate response)
 *      word    n-parameters
 *      n-parameters * {
 *              word    ADP_Parameter
 *              word    parameter-value
 *      }
 *
 * Reply:
 *      -       empty acknowledgement
 */

#endif /* def LINK_RECOVERY */

typedef enum ADP_Boot_Ack {
    AB_NORMAL_ACK,              /* will comply, immediate booted message */
    AB_LATE_ACK,                /* will comply, late startup */
    AB_ERROR                    /* cannot comply */
} ADP_Boot_Ack;

/* If the host sets neither of these in the word sent on a Reset / Reboot
 * then it doesn;t care about the endianess of the target
 */
#define ADP_BootHostFeature_LittleEnd 0x80000000
#define ADP_BootHostFeature_BigEnd    0x40000000

#define ADP_Reboot      ADPREASON(CI_HBOOT,2)
/* This message is sent when the host wants the target system to be
 * completely reset, back to the boot monitor Angel. This is the
 * method of the host forcing a cold-reboot.
 * Note that an acknowledgement message will be sent immediately and
 * that this must be sent before the target can reset.
 *
 * The parameter to this function is a bitset of host supported
 * features. (in fact the same as ADP_Reset below.  This can be used by
 * the target system to avoid using debug channel bandwidth raising
 * messages that will be ignored by the host.
 *
 * Parameters:
 *      word    host supported features (see above)
 *
 * Reply:
 *      word    status, one of enum ADP_Boot_Ack above.
 *
 * Currently there are no such features defined, so the word indicating
 * host supported features should be set to 0.
 */



#define ADP_Reset       ADPREASON(CI_HBOOT,3)
/* This message is a request from the host, which should eventually
 * result in the "ADP_Booted" message being sent by the target.
 * Note that an acknowledgement message will be sent immediately and
 * that this must be sent before the target can reset.
 * This reset message is *ALWAYS* treated as a warm boot, with the target
 * preserving as much state as possible.
 *
 * The parameter to this function is a bitset of host supported
 * features. This can be used by the target system to avoid using
 * debug channel bandwitdth raising messages that will be ignored by
 * the host.
 *
 * Parameters:
 *      word    host supported features (see above)
 *
 * Reply:
 *      word    status, one of enum ADP_Boot_Ack above.
 *
 * Currently there are no such features defined, so the word indicating
 * host supported features should be set to 0.
 */


#ifdef LINK_RECOVERY

#define ADP_HostResetIndication         ADPREASON(CI_HBOOT, 4)
/*
 * This is as for ADP_TargetResetIndication, but is sent by the host when
 * it first starts up in case the target is listening at a non-default
 * setting.  Having sent at various configurations, the host then listens
 * at the defaults it has just broadcast, to await either an ack on HBOOT
 * or a reset indication on TBOOT.
 *
 * For arguments and reply, see ADP_TargetResetIndication.
 */

#endif /* def LINK_RECOVERY */


#define ADP_ParamNegotiate              ADPREASON(CI_HBOOT, 5)
/*
 * The host sends this messages to negotiate new parameters with the target.
 * For each parameter the host specifies a range of possibilities, starting
 * with the most favoured.  All possible combinations of parameters
 * must be valid.
 *
 * If the target can operate at a combination of the offered parameters,
 * it will reply with the parameters it is willing to use.  AFTER sending
 * the reply, the target switches to this combination.  On receiving the
 * reply, the host will switch to the new combination and send a LinkCheck
 * message (see below).
 *
 * If the target cannot operate at any combination of the offered parameters,
 * it will reply with an error status.
 *
 * Message arguments:
 *      word    n-parameter-blocks
 *      n-parameter-blocks * {
 *              word    ADP_Parameter
 *              word    n-options
 *              n-options * { word      parameter-value }
 *      }
 *
 * Reply:
 *      word    status
 *      if (status == RDIError_NoError) {
 *              word    n-parameters
 *              n-parameters * {
 *                      word    ADP_Parameter
 *                      word    chosen-value
 *              }
 *      }
 */

#define ADP_LinkCheck                   ADPREASON(CI_HBOOT, 6)
/*
 * This should be the first message that the host sends after a successful
 * parameter negotiation.  It is really just a 'ping'.
 *
 * Message arguments:
 *      -       empty message
 *
 * Reply:
 *      -       empty acknowledgement
 */


/********************************************************************
 *
 * CI_HADP messages
 *
 */

#define ADP_HADPUnrecognised        ADPREASON(CI_HADP,0)
/* This message is unusual in that it is normally sent in reply to
 * another message which is not understood.  This is an exception
 * to the normal protocol which says that a reply must have the
 * same base reason code as the original.  There is a single reply
 * parameter which is the reason code which was not understood.
 *
 * As well as being a reply this message can also be sent and will
 * return as if this message were unrecognised!
 *
 * Parameters:
 *      none
 *
 * Reply:
 *      word    reason code which was not recognised
 */


#define ADP_Info                ADPREASON(CI_HADP,1)
/* This is the new ADP information message. It is used to interrogate
 * the target debug agent.  It provides information on the processor,
 * as well as the state of the debug world. This allows the host to
 * configure itself to the capabilities of the target.
 *
 * We try not to use feature bitsets, since we could quickly run out
 * of known bits.  Thus when the feature set is extended, this can be
 * done in a couple of supported ways:
 *
 *  If an undivided reason code is to be added (no reason subcodes)
 *  then add a new ADP_Info code which responds with a flag indicating
 *  whether that feature is supported by the target.  If this has not
 *  even been implemented then the reply will be ADP_HADPUnrecognised
 *
 *  If a reason code which is subdivided into reason subcodes is
 *  added then reason subcode 0 should be set aside to indicate
 *  whether the functionality of that reason code is supported
 *  by the target.  If it is not even implemented then the reply will
 *  be ADP_Unrecognised.
 *
 * The first parameter to ADP_Info is a reason subcode, and subsequent
 * parameters are defined by that subcode
 *
 * Parameters:
 *      word         reason subcode
 *      other arguments as reason subcode determines.
 *
 * Reply:
 *      word         reason subcode
 *      other argument as reason subcode determines
 */

/* ADP_Info reason subcodes: */



#define ADP_Info_NOP                    ADPSUBREASON(CI_HADP,0)
/* ADP_Info_NOP
 * ------------
 * Summary: This message is used to check for ADP_Info being supported.
 *
 * Arguments:
 * Send:   ()
 * Return: (word status)
 *
 * 'status' returns RDIError_NoError for success, non-zero indicates an error.
 * If an error is returned then there is no handler for the ADP_Info
 * message. The normal action will be to return an OK status.
 */


#define ADP_Info_Target                 ADPSUBREASON(CI_HADP,1)
/* ADP_Info_Target
 * ---------------
 * Summary:
 * This reason code is used to interrogate target system details.
 *
 * Arguments:
 * Send:   ()
 * Return: (word status, word bitset, word model)
 *
 * 'status' is RDIError_NoError to indicate OK, or non-zero to indicate
 * some sort of error.
 * 'bitset' is described in more detail below, and is mostly compatible
 * with the old RDI/RDP system to avoid gratuitous changes to the debugger
 * toolbox.
 * 'model' is the target hardware ID word, as returned by the ADP_Booted
 * message.
 *
 * NOTE: The minimum and maximum protocol levels are no longer supported.
 * It is the Angel view that debugging complexity should be shifted to the
 * host if at all possible.  This means that the host debugger should
 * always try to configure itself to the features available in the target
 * debug agent.  This can be done by checking individual messages, rather
 * than by a blanket version number dictating the feature set.
 */

/* 'bitset':- */
/* Target speed in instructions per second = 10**(bits0..3). */
#define ADP_Info_Target_LogSpeedMask         (0xF)

/* Target is running on [0 = emulator / 1 = hardware] */
#define ADP_Info_Target_HW                   (1 << 4)

/* Bits 5..10 are currently undefined and should be zero. */
/* Other bis are kept the same as the RDP in order to */
/* eliminate the need to change the position of some bits */

/* If set then the debug agent can be reloaded. */
#define ADP_Info_Target_CanReloadAgent       (1 << 11)

/* Can request AngelBufferSize information. */
#define ADP_Info_Target_CanInquireBufferSize (1 << 12)

/* Bit 13 is no longer required as it inquired whether
 * a special RDP Interrupt code was supported
 */

/* Debug agent can perform profiling. */
#define ADP_Info_Target_Profiling            (1 << 14)

/* Debug agent can support Thumb code. */
#define ADP_Info_Target_Thumb                (1 << 15)

/* Bit 16 was the communications channel check.
 * This is always available on Angel systems.
 */

#define ADP_Info_Points                 ADPSUBREASON(CI_HADP,2)
/* ADP_Info_Points
 * ---------------
 * Summary: Returns a 32bit wide bitset of break- and watch-point
 * features supported by the target debug agent.
 *
 * Arguments:
 * Send:   ()
 * Return: (word status, word breakinfo)
 *
 * 'status' returns RDIError_NoError on success or non-zero to indicate
 * some sort of error.
 * 'breakinfo' is a 32bit wide bitset described in detail below.  Note
 * that only bits 1..12 are used.
 */

/* 'breakinfo':- */
/* Can trap on address equality. */
#define ADP_Info_Points_Comparison      (1 << 0)

/* Can trap on address range. */
#define ADP_Info_Points_Range           (1 << 1)

/* Can trap on 8bit memory reads. */
#define ADP_Info_Points_ReadByteWatch   (1 << 2)

/* Can trap on 16bit memory reads. */
#define ADP_Info_Points_ReadHalfWatch   (1 << 3)

/* Can trap on 32bit memory reads. */
#define ADP_Info_Points_ReadWordWatch   (1 << 4)

/* Can trap on 8bit write accesses. */
#define ADP_Info_Points_WriteByteWatch  (1 << 5)

/* Can trap on 16bit write accesses. */
#define ADP_Info_Points_WriteHalfWatch  (1 << 6)

/* Can trap on 32bit write accesses. */
#define ADP_Info_Points_WriteWordWatch  (1 << 7)

/* Like range, but based on address bitmask<. */
#define ADP_Info_Points_Mask            (1 << 8)

/* Multi-threaded support only - thread specific breakpoints. */
#define ADP_Info_Points_ThreadBreak     (1 << 9)

/* Multi-threaded support only - thread specific watchpoints. */
#define ADP_Info_Points_ThreadWatch     (1 << 10)

/* Allows conditional breakpoints. */
#define ADP_Info_Points_Conditionals    (1 << 11)

/* Break- and watch-points can be interrogated */
#define ADP_Info_Points_Status          (1 << 12)


#define ADP_Info_Step                   ADPSUBREASON(CI_HADP,3)
/* ADP_Info_Step
 * -------------
 * Summary: Returns a 32bit wide bitmask of the single-stepping
 * capabilities of the target debug agent.
 *
 * Arguments:
 * Send:   ()
 * Return: (word status, word stepinfo)
 *
 * 'status' returns RDIError_NoError on success, or non-zero to indicate
 * some kind of error.