[newlib-cygwin.git] / libgloss / mips / regs.S

/*
 * regs.S -- standard MIPS register names.
 *
 * Copyright (c) 1995 Cygnus Support
 *
 * The authors hereby grant permission to use, copy, modify, distribute,
 * and license this software and its documentation for any purpose, provided
 * that existing copyright notices are retained in all copies and that this
 * notice is included verbatim in any distributions. No written agreement,
 * license, or royalty fee is required for any of the authorized uses.
 * Modifications to this software may be copyrighted by their authors
 * and need not follow the licensing terms described here, provided that
 * the new terms are clearly indicated on the first page of each file where
 * they apply.
 */

/* Standard MIPS register names: */
#define zero	$0
#define z0	$0
#define v0	$2
#define v1	$3
#define a0	$4
#define a1	$5
#define a2	$6
#define a3	$7
#define t0	$8
#define t1	$9
#define t2	$10
#define t3	$11
#define t4	$12
#define t5	$13
#define t6	$14
#define t7	$15
#define s0	$16
#define s1	$17
#define s2	$18
#define s3	$19
#define s4	$20
#define s5	$21
#define s6	$22
#define s7	$23
#define t8	$24
#define t9	$25
#define k0	$26	/* kernel private register 0 */
#define k1	$27	/* kernel private register 1 */
#define gp	$28	/* global data pointer */
#define sp 	$29	/* stack-pointer */
#define fp	$30	/* frame-pointer */
#define ra	$31	/* return address */
#define pc	$pc	/* pc, used on mips16 */

#define fp0	$f0
#define fp1	$f1

/* Useful memory constants: */
#define K0BASE		0x80000000
#ifndef __mips64
#define K1BASE		0xA0000000
#else
#define K1BASE		0xFFFFFFFFA0000000LL
#endif

#define PHYS_TO_K1(a)   ((unsigned)(a) | K1BASE)

/* Standard Co-Processor 0 register numbers:
#define C0_COUNT	$9		/* Count Register */
#define C0_SR		$12		/* Status Register */
#define C0_CAUSE	$13		/* last exception description */
#define C0_EPC		$14		/* Exception error address */
#define C0_PRID		$15		/* Processor Revision ID */
#define C0_CONFIG	$16		/* CPU configuration */

/* Standard Processor Revision ID Register field offsets */
#define PR_IMP	8

/* Standard Config Register field offsets */
#define CR_DB	4
#define CR_IB	5
#define CR_DC	6	/* NOTE v4121 semantics != 43,5xxx semantics */
#define CR_IC	9	/* NOTE v4121 semantics != 43,5xxx semantics */
#define CR_SC	17
#define CR_SS	20
#define CR_SB	22


/* Standard Status Register bitmasks: */
#define SR_CU1		0x20000000	/* Mark CP1 as usable */
#define SR_FR		0x04000000	/* Enable MIPS III FP registers */
#define SR_BEV		0x00400000	/* Controls location of exception vectors */
#define SR_PE		0x00100000	/* Mark soft reset (clear parity error) */

#define SR_KX		0x00000080	/* Kernel extended addressing enabled */
#define SR_SX		0x00000040	/* Supervisor extended addressing enabled */
#define SR_UX		0x00000020	/* User extended addressing enabled */

/* Standard (R4000) cache operations. Taken from "MIPS R4000
   Microprocessor User's Manual" 2nd edition: */

#define CACHE_I		(0)	/* primary instruction */
#define CACHE_D		(1)	/* primary data */
#define CACHE_SI	(2)	/* secondary instruction */
#define CACHE_SD	(3)	/* secondary data (or combined instruction/data) */

#define INDEX_INVALIDATE		(0)	/* also encodes WRITEBACK if CACHE_D or CACHE_SD */
#define INDEX_LOAD_TAG			(1)
#define INDEX_STORE_TAG			(2)
#define CREATE_DIRTY_EXCLUSIVE		(3)	/* CACHE_D and CACHE_SD only */
#define HIT_INVALIDATE			(4)
#define CACHE_FILL			(5)	/* CACHE_I only */
#define HIT_WRITEBACK_INVALIDATE	(5)	/* CACHE_D and CACHE_SD only */
#define HIT_WRITEBACK			(6)	/* CACHE_I, CACHE_D and CACHE_SD only */
#define HIT_SET_VIRTUAL			(7)	/* CACHE_SI and CACHE_SD only */

#define BUILD_CACHE_OP(o,c)		(((o) << 2) | (c))

/* Individual cache operations: */
#define INDEX_INVALIDATE_I		BUILD_CACHE_OP(INDEX_INVALIDATE,CACHE_I)
#define INDEX_WRITEBACK_INVALIDATE_D	BUILD_CACHE_OP(INDEX_INVALIDATE,CACHE_D)
#define INDEX_INVALIDATE_SI             BUILD_CACHE_OP(INDEX_INVALIDATE,CACHE_SI)
#define INDEX_WRITEBACK_INVALIDATE_SD	BUILD_CACHE_OP(INDEX_INVALIDATE,CACHE_SD)

#define INDEX_LOAD_TAG_I		BUILD_CACHE_OP(INDEX_LOAD_TAG,CACHE_I)
#define INDEX_LOAD_TAG_D                BUILD_CACHE_OP(INDEX_LOAD_TAG,CACHE_D)
#define INDEX_LOAD_TAG_SI               BUILD_CACHE_OP(INDEX_LOAD_TAG,CACHE_SI)
#define INDEX_LOAD_TAG_SD               BUILD_CACHE_OP(INDEX_LOAD_TAG,CACHE_SD)

#define INDEX_STORE_TAG_I              	BUILD_CACHE_OP(INDEX_STORE_TAG,CACHE_I)
#define INDEX_STORE_TAG_D               BUILD_CACHE_OP(INDEX_STORE_TAG,CACHE_D)
#define INDEX_STORE_TAG_SI              BUILD_CACHE_OP(INDEX_STORE_TAG,CACHE_SI)
#define INDEX_STORE_TAG_SD              BUILD_CACHE_OP(INDEX_STORE_TAG,CACHE_SD)

#define CREATE_DIRTY_EXCLUSIVE_D        BUILD_CACHE_OP(CREATE_DIRTY_EXCLUSIVE,CACHE_D)
#define CREATE_DIRTY_EXCLUSIVE_SD       BUILD_CACHE_OP(CREATE_DIRTY_EXCLUSIVE,CACHE_SD)

#define HIT_INVALIDATE_I                BUILD_CACHE_OP(HIT_INVALIDATE,CACHE_I)
#define HIT_INVALIDATE_D                BUILD_CACHE_OP(HIT_INVALIDATE,CACHE_D)
#define HIT_INVALIDATE_SI               BUILD_CACHE_OP(HIT_INVALIDATE,CACHE_SI)
#define HIT_INVALIDATE_SD               BUILD_CACHE_OP(HIT_INVALIDATE,CACHE_SD)

#define CACHE_FILL_I                    BUILD_CACHE_OP(CACHE_FILL,CACHE_I)
#define HIT_WRITEBACK_INVALIDATE_D      BUILD_CACHE_OP(HIT_WRITEBACK_INVALIDATE,CACHE_D)
#define HIT_WRITEBACK_INVALIDATE_SD     BUILD_CACHE_OP(HIT_WRITEBACK_INVALIDATE,CACHE_SD)

#define HIT_WRITEBACK_I                 BUILD_CACHE_OP(HIT_WRITEBACK,CACHE_I)
#define HIT_WRITEBACK_D                 BUILD_CACHE_OP(HIT_WRITEBACK,CACHE_D)
#define HIT_WRITEBACK_SD                BUILD_CACHE_OP(HIT_WRITEBACK,CACHE_SD)

#define HIT_SET_VIRTUAL_SI		BUILD_CACHE_OP(HIT_SET_VIRTUAL,CACHE_SI)
#define HIT_SET_VIRTUAL_SD              BUILD_CACHE_OP(HIT_SET_VIRTUAL,CACHE_SD)

/*> EOF regs.S <*/
Commit	Line	Data
03261851 RK	1	/*
	2	* regs.S -- standard MIPS register names.
	3	*
	4	* Copyright (c) 1995 Cygnus Support
	5	*
	6	* The authors hereby grant permission to use, copy, modify, distribute,
	7	* and license this software and its documentation for any purpose, provided
	8	* that existing copyright notices are retained in all copies and that this
	9	* notice is included verbatim in any distributions. No written agreement,
	10	* license, or royalty fee is required for any of the authorized uses.
	11	* Modifications to this software may be copyrighted by their authors
	12	* and need not follow the licensing terms described here, provided that
	13	* the new terms are clearly indicated on the first page of each file where
	14	* they apply.
	15	*/
	16
	17	/* Standard MIPS register names: */
	18	#define zero $0
	19	#define z0 $0
	20	#define v0 $2
	21	#define v1 $3
	22	#define a0 $4
	23	#define a1 $5
	24	#define a2 $6
	25	#define a3 $7
	26	#define t0 $8
	27	#define t1 $9
	28	#define t2 $10
	29	#define t3 $11
	30	#define t4 $12
	31	#define t5 $13
	32	#define t6 $14
	33	#define t7 $15
	34	#define s0 $16
	35	#define s1 $17
	36	#define s2 $18
	37	#define s3 $19
	38	#define s4 $20
	39	#define s5 $21
	40	#define s6 $22
	41	#define s7 $23
	42	#define t8 $24
	43	#define t9 $25
	44	#define k0 $26 /* kernel private register 0 */
	45	#define k1 $27 /* kernel private register 1 */
	46	#define gp $28 /* global data pointer */
	47	#define sp $29 /* stack-pointer */
	48	#define fp $30 /* frame-pointer */
	49	#define ra $31 /* return address */
	50	#define pc $pc /* pc, used on mips16 */
	51
	52	#define fp0 $f0
	53	#define fp1 $f1
	54
	55	/* Useful memory constants: */
	56	#define K0BASE 0x80000000
	57	#ifndef __mips64
	58	#define K1BASE 0xA0000000
	59	#else
	60	#define K1BASE 0xFFFFFFFFA0000000LL
	61	#endif
	62
	63	#define PHYS_TO_K1(a) ((unsigned)(a) \| K1BASE)
	64
65	/* Standard Co-Processor 0 register numbers:
66	#define C0_COUNT $9 /* Count Register */
67	#define C0_SR $12 /* Status Register */
68	#define C0_CAUSE $13 /* last exception description */
69	#define C0_EPC $14 /* Exception error address */
70	#define C0_PRID $15 /* Processor Revision ID */
71	#define C0_CONFIG $16 /* CPU configuration */
72
73	/* Standard Processor Revision ID Register field offsets */
74	#define PR_IMP 8
75
76	/* Standard Config Register field offsets */
77	#define CR_DB 4
78	#define CR_IB 5
79	#define CR_DC 6 /* NOTE v4121 semantics != 43,5xxx semantics */
80	#define CR_IC 9 /* NOTE v4121 semantics != 43,5xxx semantics */
81	#define CR_SC 17
82	#define CR_SS 20
83	#define CR_SB 22
84
85
86	/* Standard Status Register bitmasks: */
87	#define SR_CU1 0x20000000 /* Mark CP1 as usable */
88	#define SR_FR 0x04000000 /* Enable MIPS III FP registers */
89	#define SR_BEV 0x00400000 /* Controls location of exception vectors */
90	#define SR_PE 0x00100000 /* Mark soft reset (clear parity error) */
91
92	#define SR_KX 0x00000080 /* Kernel extended addressing enabled */
93	#define SR_SX 0x00000040 /* Supervisor extended addressing enabled */
94	#define SR_UX 0x00000020 /* User extended addressing enabled */
95
96	/* Standard (R4000) cache operations. Taken from "MIPS R4000
97	Microprocessor User's Manual" 2nd edition: */
98
99	#define CACHE_I (0) /* primary instruction */
100	#define CACHE_D (1) /* primary data */
101	#define CACHE_SI (2) /* secondary instruction */
102	#define CACHE_SD (3) /* secondary data (or combined instruction/data) */
103
104	#define INDEX_INVALIDATE (0) /* also encodes WRITEBACK if CACHE_D or CACHE_SD */
105	#define INDEX_LOAD_TAG (1)
106	#define INDEX_STORE_TAG (2)
107	#define CREATE_DIRTY_EXCLUSIVE (3) /* CACHE_D and CACHE_SD only */
108	#define HIT_INVALIDATE (4)
109	#define CACHE_FILL (5) /* CACHE_I only */
110	#define HIT_WRITEBACK_INVALIDATE (5) /* CACHE_D and CACHE_SD only */
111	#define HIT_WRITEBACK (6) /* CACHE_I, CACHE_D and CACHE_SD only */
112	#define HIT_SET_VIRTUAL (7) /* CACHE_SI and CACHE_SD only */
113
114	#define BUILD_CACHE_OP(o,c) (((o) << 2) \| (c))
115
116	/* Individual cache operations: */
117	#define INDEX_INVALIDATE_I BUILD_CACHE_OP(INDEX_INVALIDATE,CACHE_I)
118	#define INDEX_WRITEBACK_INVALIDATE_D BUILD_CACHE_OP(INDEX_INVALIDATE,CACHE_D)
119	#define INDEX_INVALIDATE_SI BUILD_CACHE_OP(INDEX_INVALIDATE,CACHE_SI)
120	#define INDEX_WRITEBACK_INVALIDATE_SD BUILD_CACHE_OP(INDEX_INVALIDATE,CACHE_SD)
121
122	#define INDEX_LOAD_TAG_I BUILD_CACHE_OP(INDEX_LOAD_TAG,CACHE_I)
123	#define INDEX_LOAD_TAG_D BUILD_CACHE_OP(INDEX_LOAD_TAG,CACHE_D)
124	#define INDEX_LOAD_TAG_SI BUILD_CACHE_OP(INDEX_LOAD_TAG,CACHE_SI)
125	#define INDEX_LOAD_TAG_SD BUILD_CACHE_OP(INDEX_LOAD_TAG,CACHE_SD)
126
127	#define INDEX_STORE_TAG_I BUILD_CACHE_OP(INDEX_STORE_TAG,CACHE_I)
128	#define INDEX_STORE_TAG_D BUILD_CACHE_OP(INDEX_STORE_TAG,CACHE_D)
129	#define INDEX_STORE_TAG_SI BUILD_CACHE_OP(INDEX_STORE_TAG,CACHE_SI)
130	#define INDEX_STORE_TAG_SD BUILD_CACHE_OP(INDEX_STORE_TAG,CACHE_SD)
131
132	#define CREATE_DIRTY_EXCLUSIVE_D BUILD_CACHE_OP(CREATE_DIRTY_EXCLUSIVE,CACHE_D)
133	#define CREATE_DIRTY_EXCLUSIVE_SD BUILD_CACHE_OP(CREATE_DIRTY_EXCLUSIVE,CACHE_SD)
134
135	#define HIT_INVALIDATE_I BUILD_CACHE_OP(HIT_INVALIDATE,CACHE_I)
136	#define HIT_INVALIDATE_D BUILD_CACHE_OP(HIT_INVALIDATE,CACHE_D)
137	#define HIT_INVALIDATE_SI BUILD_CACHE_OP(HIT_INVALIDATE,CACHE_SI)
138	#define HIT_INVALIDATE_SD BUILD_CACHE_OP(HIT_INVALIDATE,CACHE_SD)
139
140	#define CACHE_FILL_I BUILD_CACHE_OP(CACHE_FILL,CACHE_I)
141	#define HIT_WRITEBACK_INVALIDATE_D BUILD_CACHE_OP(HIT_WRITEBACK_INVALIDATE,CACHE_D)
142	#define HIT_WRITEBACK_INVALIDATE_SD BUILD_CACHE_OP(HIT_WRITEBACK_INVALIDATE,CACHE_SD)
143
144	#define HIT_WRITEBACK_I BUILD_CACHE_OP(HIT_WRITEBACK,CACHE_I)
145	#define HIT_WRITEBACK_D BUILD_CACHE_OP(HIT_WRITEBACK,CACHE_D)
146	#define HIT_WRITEBACK_SD BUILD_CACHE_OP(HIT_WRITEBACK,CACHE_SD)
147
148	#define HIT_SET_VIRTUAL_SI BUILD_CACHE_OP(HIT_SET_VIRTUAL,CACHE_SI)
149	#define HIT_SET_VIRTUAL_SD BUILD_CACHE_OP(HIT_SET_VIRTUAL,CACHE_SD)
150
151	/> EOF regs.S </