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	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	#include <sys/appleapiopts.h>
	30
	31	#ifdef MACH_KERNEL_PRIVATE
	32	#include <ppc/savearea.h>
	33	#endif
	34	/*
	35	* ppc_thread_state is the structure that is exported to user threads for
	36	* use in status/mutate calls. This structure should never change.
	37	*
	38	*/
	39
	40	#define PPC_THREAD_STATE 1
	41	#define PPC_FLOAT_STATE 2
	42	#define PPC_EXCEPTION_STATE 3
	43	#define PPC_VECTOR_STATE 4
	44	#define THREAD_STATE_NONE 7
	45
	46	/*
	47	* VALID_THREAD_STATE_FLAVOR is a platform specific macro that when passed
	48	* an exception flavor will return whether that is a defined flavor for
	49	* that platform.
	50	* The macro must be manually updated to include all of the valid exception
	51	* flavors as defined above.
	52	*/
	53	#define VALID_THREAD_STATE_FLAVOR(x) \
	54	((x == PPC_THREAD_STATE) \|\| \
	55	(x == PPC_FLOAT_STATE) \|\| \
	56	(x == PPC_EXCEPTION_STATE) \|\| \
	57	(x == PPC_VECTOR_STATE) \|\| \
	58	(x == THREAD_STATE_NONE))
	59
	60	typedef struct ppc_thread_state {
	61	unsigned int srr0; /* Instruction address register (PC) */
	62	unsigned int srr1; /* Machine state register (supervisor) */
	63	unsigned int r0;
	64	unsigned int r1;
	65	unsigned int r2;
	66	unsigned int r3;
	67	unsigned int r4;
	68	unsigned int r5;
	69	unsigned int r6;
	70	unsigned int r7;
	71	unsigned int r8;
	72	unsigned int r9;
	73	unsigned int r10;
	74	unsigned int r11;
	75	unsigned int r12;
	76	unsigned int r13;
	77	unsigned int r14;
	78	unsigned int r15;
	79	unsigned int r16;
	80	unsigned int r17;
	81	unsigned int r18;
	82	unsigned int r19;
	83	unsigned int r20;
	84	unsigned int r21;
	85	unsigned int r22;
	86	unsigned int r23;
	87	unsigned int r24;
	88	unsigned int r25;
	89	unsigned int r26;
	90	unsigned int r27;
	91	unsigned int r28;
	92	unsigned int r29;
	93	unsigned int r30;
	94	unsigned int r31;
	95
	96	unsigned int cr; /* Condition register */
	97	unsigned int xer; /* User's integer exception register */
	98	unsigned int lr; /* Link register */
	99	unsigned int ctr; /* Count register */
	100	unsigned int mq; /* MQ register (601 only) */
	101
	102	unsigned int vrsave; /* Vector Save Register */
	103	} ppc_thread_state_t;
	104
	105	/* This structure should be double-word aligned for performance */
	106
	107	typedef struct ppc_float_state {
	108	double fpregs[32];
	109
	110	unsigned int fpscr_pad; /* fpscr is 64 bits, 32 bits of rubbish */
	111	unsigned int fpscr; /* floating point status register */
	112	} ppc_float_state_t;
	113
	114	typedef struct ppc_vector_state {
	115	unsigned long save_vr[32][4];
	116	unsigned long save_vscr[4];
	117	unsigned int save_pad5[4];
	118	unsigned int save_vrvalid; /* VRs that have been saved */
	119	unsigned int save_pad6[7];
	120	} ppc_vector_state_t;
	121
	122	/*
	123	* saved state structure
	124	*
	125	* This structure corresponds to the saved state.
	126	*
	127	*/
	128
	129	#if defined(__APPLE_API_PRIVATE) && defined(MACH_KERNEL_PRIVATE)
	130	typedef struct savearea ppc_saved_state_t;
	131	#else
	132	typedef struct ppc_thread_state ppc_saved_state_t;
	133	#endif /* __APPLE_API_PRIVATE && MACH_KERNEL_PRIVATE */
	134
	135	/*
	136	* ppc_exception_state
	137	*
	138	* This structure corresponds to some additional state of the user
	139	* registers as saved in the PCB upon kernel entry. They are only
	140	* available if an exception is passed out of the kernel, and even
	141	* then not all are guaranteed to be updated.
	142	*
	143	* Some padding is included in this structure which allows space for
	144	* servers to store temporary values if need be, to maintain binary
	145	* compatiblity.
	146	*/
	147
	148	typedef struct ppc_exception_state {
	149	unsigned long dar; /* Fault registers for coredump */
	150	unsigned long dsisr;
	151	unsigned long exception;/* number of powerpc exception taken */
	152	unsigned long pad0; /* align to 16 bytes */
	153
	154	unsigned long pad1[4]; /* space in PCB "just in case" */
	155	} ppc_exception_state_t;
	156
	157	/*
	158	* Save State Flags
	159	*/
	160
	161	#define PPC_THREAD_STATE_COUNT \
	162	(sizeof(struct ppc_thread_state) / sizeof(int))
	163
	164	#define PPC_EXCEPTION_STATE_COUNT \
	165	(sizeof(struct ppc_exception_state) / sizeof(int))
	166
	167	#define PPC_FLOAT_STATE_COUNT \
	168	(sizeof(struct ppc_float_state) / sizeof(int))
	169
	170	#define PPC_VECTOR_STATE_COUNT \
	171	(sizeof(struct ppc_vector_state) / sizeof(int))
	172
	173	/*
	174	* Machine-independent way for servers and Mach's exception mechanism to
	175	* choose the most efficient state flavor for exception RPC's:
	176	*/
	177	#define MACHINE_THREAD_STATE PPC_THREAD_STATE
	178	#define MACHINE_THREAD_STATE_COUNT PPC_THREAD_STATE_COUNT
	179
	180	/*
	181	* Largest state on this machine:
	182	*/
	183	#define THREAD_MACHINE_STATE_MAX PPC_VECTOR_STATE_COUNT
	184
	185	#endif /* _MACH_PPC_THREAD_STATUS_H_ */