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Annotation of XNU/osfmk/mach/ppc/thread_status.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*
        !            23:  * @OSF_COPYRIGHT@
        !            24:  */
        !            25: 
        !            26: #ifndef        _MACH_PPC_THREAD_STATUS_H_
        !            27: #define _MACH_PPC_THREAD_STATUS_H_
        !            28: 
        !            29: /*
        !            30:  * ppc_thread_state is the structure that is exported to user threads for 
        !            31:  * use in status/mutate calls.  This structure should never change.
        !            32:  *
        !            33:  */
        !            34: 
        !            35: #define PPC_THREAD_STATE        1
        !            36: #define PPC_FLOAT_STATE         2
        !            37: #define PPC_EXCEPTION_STATE            3
        !            38: #define PPC_VECTOR_STATE               4
        !            39: #define THREAD_STATE_NONE              7
        !            40:               
        !            41: typedef struct ppc_thread_state {
        !            42:        unsigned int srr0;      /* Instruction address register (PC) */
        !            43:        unsigned int srr1;      /* Machine state register (supervisor) */
        !            44:        unsigned int r0;
        !            45:        unsigned int r1;
        !            46:        unsigned int r2;
        !            47:        unsigned int r3;
        !            48:        unsigned int r4;
        !            49:        unsigned int r5;
        !            50:        unsigned int r6;
        !            51:        unsigned int r7;
        !            52:        unsigned int r8;
        !            53:        unsigned int r9;
        !            54:        unsigned int r10;
        !            55:        unsigned int r11;
        !            56:        unsigned int r12;
        !            57:        unsigned int r13;
        !            58:        unsigned int r14;
        !            59:        unsigned int r15;
        !            60:        unsigned int r16;
        !            61:        unsigned int r17;
        !            62:        unsigned int r18;
        !            63:        unsigned int r19;
        !            64:        unsigned int r20;
        !            65:        unsigned int r21;
        !            66:        unsigned int r22;
        !            67:        unsigned int r23;
        !            68:        unsigned int r24;
        !            69:        unsigned int r25;
        !            70:        unsigned int r26;
        !            71:        unsigned int r27;
        !            72:        unsigned int r28;
        !            73:        unsigned int r29;
        !            74:        unsigned int r30;
        !            75:        unsigned int r31;
        !            76: 
        !            77:        unsigned int cr;        /* Condition register */
        !            78:        unsigned int xer;       /* User's integer exception register */
        !            79:        unsigned int lr;        /* Link register */
        !            80:        unsigned int ctr;       /* Count register */
        !            81:        unsigned int mq;        /* MQ register (601 only) */
        !            82: 
        !            83:        unsigned int vrsave;    /* Vector Save Register */
        !            84: } ppc_thread_state_t;
        !            85: 
        !            86: /* This structure should be double-word aligned for performance */
        !            87: 
        !            88: typedef struct ppc_float_state {
        !            89:        double  fpregs[32];
        !            90: 
        !            91:        unsigned int fpscr_pad; /* fpscr is 64 bits, 32 bits of rubbish */
        !            92:        unsigned int fpscr;     /* floating point status register */
        !            93: } ppc_float_state_t;
        !            94: 
        !            95: typedef struct ppc_vector_state {
        !            96:        unsigned long   save_vr[32][4];
        !            97:        unsigned long   save_vscr[4];
        !            98:        unsigned int    save_pad5[4];
        !            99:        unsigned int    save_vrvalid;                   /* VRs that have been saved */
        !           100:        unsigned int    save_pad6[7];
        !           101: } ppc_vector_state_t;
        !           102: 
        !           103: /*
        !           104:  * saved state structure
        !           105:  *
        !           106:  * This structure corresponds to the state of the user registers as saved
        !           107:  * on the stack upon kernel entry (saved in pcb). On interrupts and exceptions
        !           108:  * we save all registers. On system calls we only save the registers not
        !           109:  * saved by the caller.
        !           110:  *
        !           111:  */
        !           112: 
        !           113: typedef struct ppc_saved_state {
        !           114:        unsigned int srr0;      /* Instruction address register (PC) */
        !           115:        unsigned int srr1;      /* Machine state register (supervisor) */
        !           116:        unsigned int r0;
        !           117:        unsigned int r1;
        !           118:        unsigned int r2;
        !           119:        unsigned int r3;
        !           120:        unsigned int r4;
        !           121:        unsigned int r5;
        !           122:        unsigned int r6;
        !           123:        unsigned int r7;
        !           124:        unsigned int r8;
        !           125:        unsigned int r9;
        !           126:        unsigned int r10;
        !           127:        unsigned int r11;
        !           128:        unsigned int r12;
        !           129:        unsigned int r13;
        !           130:        unsigned int r14;
        !           131:        unsigned int r15;
        !           132:        unsigned int r16;
        !           133:        unsigned int r17;
        !           134:        unsigned int r18;
        !           135:        unsigned int r19;
        !           136:        unsigned int r20;
        !           137:        unsigned int r21;
        !           138:        unsigned int r22;
        !           139:        unsigned int r23;
        !           140:        unsigned int r24;
        !           141:        unsigned int r25;
        !           142:        unsigned int r26;
        !           143:        unsigned int r27;
        !           144:        unsigned int r28;
        !           145:        unsigned int r29;
        !           146:        unsigned int r30;
        !           147:        unsigned int r31;
        !           148: 
        !           149:        unsigned int cr;        /* Condition register */
        !           150:        unsigned int xer;               /* User's integer exception register */
        !           151:        unsigned int lr;                /* Link register */
        !           152:        unsigned int ctr;               /* Count register */
        !           153:        unsigned int mq;                /* MQ register (601 only) */
        !           154:        unsigned int vrsave;    /* Vector Register Save */
        !           155: 
        !           156: /*     These are extra.  Remove them from the count */
        !           157: 
        !           158:        unsigned int sr_copyin; /* SR_COPYIN is used for remapping */
        !           159:        unsigned int pad2[7];   /* struct alignment */
        !           160: } ppc_saved_state_t;
        !           161: 
        !           162: /*
        !           163:  * ppc_exception_state
        !           164:  *
        !           165:  * This structure corresponds to some additional state of the user
        !           166:  * registers as saved in the PCB upon kernel entry. They are only
        !           167:  * available if an exception is passed out of the kernel, and even
        !           168:  * then not all are guaranteed to be updated.
        !           169:  *
        !           170:  * Some padding is included in this structure which allows space for
        !           171:  * servers to store temporary values if need be, to maintain binary
        !           172:  * compatiblity.
        !           173:  */
        !           174: 
        !           175: typedef struct ppc_exception_state {
        !           176:        unsigned long dar;      /* Fault registers for coredump */
        !           177:        unsigned long dsisr;
        !           178:        unsigned long exception;/* number of powerpc exception taken */
        !           179:        unsigned long pad0;     /* align to 16 bytes */
        !           180: 
        !           181:        unsigned long pad1[4];  /* space in PCB "just in case" */
        !           182: } ppc_exception_state_t;
        !           183: 
        !           184: /*
        !           185:  * Save State Flags
        !           186:  */
        !           187: 
        !           188: #define PPC_THREAD_STATE_COUNT \
        !           189:    (sizeof(struct ppc_thread_state) / sizeof(int))
        !           190: 
        !           191: #define PPC_EXCEPTION_STATE_COUNT \
        !           192:    (sizeof(struct ppc_exception_state) / sizeof(int))
        !           193: 
        !           194: #define PPC_FLOAT_STATE_COUNT \
        !           195:    (sizeof(struct ppc_float_state) / sizeof(int))
        !           196: 
        !           197: #define PPC_VECTOR_STATE_COUNT \
        !           198:    (sizeof(struct ppc_vector_state) / sizeof(int))
        !           199: 
        !           200: /*
        !           201:  * Machine-independent way for servers and Mach's exception mechanism to
        !           202:  * choose the most efficient state flavor for exception RPC's:
        !           203:  */
        !           204: #define MACHINE_THREAD_STATE           PPC_THREAD_STATE
        !           205: #define MACHINE_THREAD_STATE_COUNT     PPC_THREAD_STATE_COUNT
        !           206: 
        !           207: /*
        !           208:  * Largest state on this machine:
        !           209:  */
        !           210: #define THREAD_MACHINE_STATE_MAX       PPC_VECTOR_STATE_COUNT
        !           211: 
        !           212: #endif /* _MACH_PPC_THREAD_STATUS_H_ */

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