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1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1995, 1996, 1997, 1999, 2001 by Ralf Baechle
7 * Copyright (C) 1999 by Silicon Graphics, Inc.
8 * Copyright (C) 2001 MIPS Technologies, Inc.
9 * Copyright (C) 2002 Maciej W. Rozycki
10 *
11 * Some useful macros for MIPS assembler code
12 *
13 * Some of the routines below contain useless nops that will be optimized
14 * away by gas in -O mode. These nops are however required to fill delay
15 * slots in noreorder mode.
16 */
17#ifndef __ASM_ASM_H
18#define __ASM_ASM_H
19
20#include <asm/sgidefs.h>
21#include <asm/asm-eva.h>
22
23/*
24 * LEAF - declare leaf routine
25 */
26#define LEAF(symbol) \
27 .globl symbol; \
28 .align 2; \
29 .type symbol, @function; \
30 .ent symbol, 0; \
31symbol: .frame sp, 0, ra; \
32 .cfi_startproc; \
33 .insn
34
35/*
36 * NESTED - declare nested routine entry point
37 */
38#define NESTED(symbol, framesize, rpc) \
39 .globl symbol; \
40 .align 2; \
41 .type symbol, @function; \
42 .ent symbol, 0; \
43symbol: .frame sp, framesize, rpc; \
44 .cfi_startproc; \
45 .insn
46
47/*
48 * END - mark end of function
49 */
50#define END(function) \
51 .cfi_endproc; \
52 .end function; \
53 .size function, .-function
54
55/*
56 * EXPORT - export definition of symbol
57 */
58#define EXPORT(symbol) \
59 .globl symbol; \
60symbol:
61
62/*
63 * FEXPORT - export definition of a function symbol
64 */
65#define FEXPORT(symbol) \
66 .globl symbol; \
67 .type symbol, @function; \
68symbol: .insn
69
70/*
71 * ABS - export absolute symbol
72 */
73#define ABS(symbol,value) \
74 .globl symbol; \
75symbol = value
76
77#define TEXT(msg) \
78 .pushsection .data; \
798: .asciiz msg; \
80 .popsection;
81
82#define ASM_PANIC(msg) \
83 .set push; \
84 .set reorder; \
85 PTR_LA a0, 8f; \
86 jal panic; \
879: b 9b; \
88 .set pop; \
89 TEXT(msg)
90
91/*
92 * Print formatted string
93 */
94#ifdef CONFIG_PRINTK
95#define ASM_PRINT(string) \
96 .set push; \
97 .set reorder; \
98 PTR_LA a0, 8f; \
99 jal printk; \
100 .set pop; \
101 TEXT(string)
102#else
103#define ASM_PRINT(string)
104#endif
105
106/*
107 * Stack alignment
108 */
109#if (_MIPS_SIM == _MIPS_SIM_ABI32)
110#define ALSZ 7
111#define ALMASK ~7
112#endif
113#if (_MIPS_SIM == _MIPS_SIM_NABI32) || (_MIPS_SIM == _MIPS_SIM_ABI64)
114#define ALSZ 15
115#define ALMASK ~15
116#endif
117
118/*
119 * Macros to handle different pointer/register sizes for 32/64-bit code
120 */
121
122/*
123 * Size of a register
124 */
125#ifdef __mips64
126#define SZREG 8
127#else
128#define SZREG 4
129#endif
130
131/*
132 * Use the following macros in assemblercode to load/store registers,
133 * pointers etc.
134 */
135#if (_MIPS_SIM == _MIPS_SIM_ABI32)
136#define REG_S sw
137#define REG_L lw
138#define REG_SUBU subu
139#define REG_ADDU addu
140#endif
141#if (_MIPS_SIM == _MIPS_SIM_NABI32) || (_MIPS_SIM == _MIPS_SIM_ABI64)
142#define REG_S sd
143#define REG_L ld
144#define REG_SUBU dsubu
145#define REG_ADDU daddu
146#endif
147
148/*
149 * How to add/sub/load/store/shift C int variables.
150 */
151#if (_MIPS_SZINT == 32)
152#define INT_ADD add
153#define INT_ADDU addu
154#define INT_ADDI addi
155#define INT_ADDIU addiu
156#define INT_SUB sub
157#define INT_SUBU subu
158#define INT_L lw
159#define INT_S sw
160#define INT_SLL sll
161#define INT_SLLV sllv
162#define INT_SRL srl
163#define INT_SRLV srlv
164#define INT_SRA sra
165#define INT_SRAV srav
166#endif
167
168#if (_MIPS_SZINT == 64)
169#define INT_ADD dadd
170#define INT_ADDU daddu
171#define INT_ADDI daddi
172#define INT_ADDIU daddiu
173#define INT_SUB dsub
174#define INT_SUBU dsubu
175#define INT_L ld
176#define INT_S sd
177#define INT_SLL dsll
178#define INT_SLLV dsllv
179#define INT_SRL dsrl
180#define INT_SRLV dsrlv
181#define INT_SRA dsra
182#define INT_SRAV dsrav
183#endif
184
185/*
186 * How to add/sub/load/store/shift C long variables.
187 */
188#if (_MIPS_SZLONG == 32)
189#define LONG_ADD add
190#define LONG_ADDU addu
191#define LONG_ADDI addi
192#define LONG_ADDIU addiu
193#define LONG_SUB sub
194#define LONG_SUBU subu
195#define LONG_L lw
196#define LONG_S sw
197#define LONG_SP swp
198#define LONG_SLL sll
199#define LONG_SLLV sllv
200#define LONG_SRL srl
201#define LONG_SRLV srlv
202#define LONG_SRA sra
203#define LONG_SRAV srav
204
205#ifdef __ASSEMBLY__
206#define LONG .word
207#endif
208#define LONGSIZE 4
209#define LONGMASK 3
210#define LONGLOG 2
211#endif
212
213#if (_MIPS_SZLONG == 64)
214#define LONG_ADD dadd
215#define LONG_ADDU daddu
216#define LONG_ADDI daddi
217#define LONG_ADDIU daddiu
218#define LONG_SUB dsub
219#define LONG_SUBU dsubu
220#define LONG_L ld
221#define LONG_S sd
222#define LONG_SP sdp
223#define LONG_SLL dsll
224#define LONG_SLLV dsllv
225#define LONG_SRL dsrl
226#define LONG_SRLV dsrlv
227#define LONG_SRA dsra
228#define LONG_SRAV dsrav
229
230#ifdef __ASSEMBLY__
231#define LONG .dword
232#endif
233#define LONGSIZE 8
234#define LONGMASK 7
235#define LONGLOG 3
236#endif
237
238/*
239 * How to add/sub/load/store/shift pointers.
240 */
241#if (_MIPS_SZPTR == 32)
242#define PTR_ADD add
243#define PTR_ADDU addu
244#define PTR_ADDI addi
245#define PTR_ADDIU addiu
246#define PTR_SUB sub
247#define PTR_SUBU subu
248#define PTR_L lw
249#define PTR_S sw
250#define PTR_LA la
251#define PTR_LI li
252#define PTR_SLL sll
253#define PTR_SLLV sllv
254#define PTR_SRL srl
255#define PTR_SRLV srlv
256#define PTR_SRA sra
257#define PTR_SRAV srav
258
259#define PTR_SCALESHIFT 2
260
261#define PTR .word
262#define PTRSIZE 4
263#define PTRLOG 2
264#endif
265
266#if (_MIPS_SZPTR == 64)
267#define PTR_ADD dadd
268#define PTR_ADDU daddu
269#define PTR_ADDI daddi
270#define PTR_ADDIU daddiu
271#define PTR_SUB dsub
272#define PTR_SUBU dsubu
273#define PTR_L ld
274#define PTR_S sd
275#define PTR_LA dla
276#define PTR_LI dli
277#define PTR_SLL dsll
278#define PTR_SLLV dsllv
279#define PTR_SRL dsrl
280#define PTR_SRLV dsrlv
281#define PTR_SRA dsra
282#define PTR_SRAV dsrav
283
284#define PTR_SCALESHIFT 3
285
286#define PTR .dword
287#define PTRSIZE 8
288#define PTRLOG 3
289#endif
290
291/*
292 * Some cp0 registers were extended to 64bit for MIPS III.
293 */
294#if (_MIPS_SIM == _MIPS_SIM_ABI32)
295#define MFC0 mfc0
296#define MTC0 mtc0
297#endif
298#if (_MIPS_SIM == _MIPS_SIM_NABI32) || (_MIPS_SIM == _MIPS_SIM_ABI64)
299#define MFC0 dmfc0
300#define MTC0 dmtc0
301#endif
302
303#define SSNOP sll zero, zero, 1
304
305#ifdef CONFIG_SGI_IP28
306/* Inhibit speculative stores to volatile (e.g.DMA) or invalid addresses. */
307#include <asm/cacheops.h>
308#define R10KCBARRIER(addr) cache Cache_Barrier, addr;
309#else
310#define R10KCBARRIER(addr)
311#endif
312
313#endif /* __ASM_ASM_H */
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1995, 1996, 1997, 1999, 2001 by Ralf Baechle
7 * Copyright (C) 1999 by Silicon Graphics, Inc.
8 * Copyright (C) 2001 MIPS Technologies, Inc.
9 * Copyright (C) 2002 Maciej W. Rozycki
10 *
11 * Some useful macros for MIPS assembler code
12 *
13 * Some of the routines below contain useless nops that will be optimized
14 * away by gas in -O mode. These nops are however required to fill delay
15 * slots in noreorder mode.
16 */
17#ifndef __ASM_ASM_H
18#define __ASM_ASM_H
19
20#include <asm/sgidefs.h>
21#include <asm/asm-eva.h>
22
23#ifndef CAT
24#ifdef __STDC__
25#define __CAT(str1, str2) str1##str2
26#else
27#define __CAT(str1, str2) str1/**/str2
28#endif
29#define CAT(str1, str2) __CAT(str1, str2)
30#endif
31
32/*
33 * PIC specific declarations
34 * Not used for the kernel but here seems to be the right place.
35 */
36#ifdef __PIC__
37#define CPRESTORE(register) \
38 .cprestore register
39#define CPADD(register) \
40 .cpadd register
41#define CPLOAD(register) \
42 .cpload register
43#else
44#define CPRESTORE(register)
45#define CPADD(register)
46#define CPLOAD(register)
47#endif
48
49/*
50 * LEAF - declare leaf routine
51 */
52#define LEAF(symbol) \
53 .globl symbol; \
54 .align 2; \
55 .type symbol, @function; \
56 .ent symbol, 0; \
57symbol: .frame sp, 0, ra; \
58 .cfi_startproc; \
59 .insn
60
61/*
62 * NESTED - declare nested routine entry point
63 */
64#define NESTED(symbol, framesize, rpc) \
65 .globl symbol; \
66 .align 2; \
67 .type symbol, @function; \
68 .ent symbol, 0; \
69symbol: .frame sp, framesize, rpc; \
70 .cfi_startproc; \
71 .insn
72
73/*
74 * END - mark end of function
75 */
76#define END(function) \
77 .cfi_endproc; \
78 .end function; \
79 .size function, .-function
80
81/*
82 * EXPORT - export definition of symbol
83 */
84#define EXPORT(symbol) \
85 .globl symbol; \
86symbol:
87
88/*
89 * FEXPORT - export definition of a function symbol
90 */
91#define FEXPORT(symbol) \
92 .globl symbol; \
93 .type symbol, @function; \
94symbol: .insn
95
96/*
97 * ABS - export absolute symbol
98 */
99#define ABS(symbol,value) \
100 .globl symbol; \
101symbol = value
102
103#define PANIC(msg) \
104 .set push; \
105 .set reorder; \
106 PTR_LA a0, 8f; \
107 jal panic; \
1089: b 9b; \
109 .set pop; \
110 TEXT(msg)
111
112/*
113 * Print formatted string
114 */
115#ifdef CONFIG_PRINTK
116#define PRINT(string) \
117 .set push; \
118 .set reorder; \
119 PTR_LA a0, 8f; \
120 jal printk; \
121 .set pop; \
122 TEXT(string)
123#else
124#define PRINT(string)
125#endif
126
127#define TEXT(msg) \
128 .pushsection .data; \
1298: .asciiz msg; \
130 .popsection;
131
132/*
133 * Build text tables
134 */
135#define TTABLE(string) \
136 .pushsection .text; \
137 .word 1f; \
138 .popsection \
139 .pushsection .data; \
1401: .asciiz string; \
141 .popsection
142
143/*
144 * MIPS IV pref instruction.
145 * Use with .set noreorder only!
146 *
147 * MIPS IV implementations are free to treat this as a nop. The R5000
148 * is one of them. So we should have an option not to use this instruction.
149 */
150#ifdef CONFIG_CPU_HAS_PREFETCH
151
152#define PREF(hint,addr) \
153 .set push; \
154 .set arch=r5000; \
155 pref hint, addr; \
156 .set pop
157
158#define PREFE(hint, addr) \
159 .set push; \
160 .set mips0; \
161 .set eva; \
162 prefe hint, addr; \
163 .set pop
164
165#define PREFX(hint,addr) \
166 .set push; \
167 .set arch=r5000; \
168 prefx hint, addr; \
169 .set pop
170
171#else /* !CONFIG_CPU_HAS_PREFETCH */
172
173#define PREF(hint, addr)
174#define PREFE(hint, addr)
175#define PREFX(hint, addr)
176
177#endif /* !CONFIG_CPU_HAS_PREFETCH */
178
179/*
180 * MIPS ISA IV/V movn/movz instructions and equivalents for older CPUs.
181 */
182#if (_MIPS_ISA == _MIPS_ISA_MIPS1)
183#define MOVN(rd, rs, rt) \
184 .set push; \
185 .set reorder; \
186 beqz rt, 9f; \
187 move rd, rs; \
188 .set pop; \
1899:
190#define MOVZ(rd, rs, rt) \
191 .set push; \
192 .set reorder; \
193 bnez rt, 9f; \
194 move rd, rs; \
195 .set pop; \
1969:
197#endif /* _MIPS_ISA == _MIPS_ISA_MIPS1 */
198#if (_MIPS_ISA == _MIPS_ISA_MIPS2) || (_MIPS_ISA == _MIPS_ISA_MIPS3)
199#define MOVN(rd, rs, rt) \
200 .set push; \
201 .set noreorder; \
202 bnezl rt, 9f; \
203 move rd, rs; \
204 .set pop; \
2059:
206#define MOVZ(rd, rs, rt) \
207 .set push; \
208 .set noreorder; \
209 beqzl rt, 9f; \
210 move rd, rs; \
211 .set pop; \
2129:
213#endif /* (_MIPS_ISA == _MIPS_ISA_MIPS2) || (_MIPS_ISA == _MIPS_ISA_MIPS3) */
214#if (_MIPS_ISA == _MIPS_ISA_MIPS4 ) || (_MIPS_ISA == _MIPS_ISA_MIPS5) || \
215 (_MIPS_ISA == _MIPS_ISA_MIPS32) || (_MIPS_ISA == _MIPS_ISA_MIPS64)
216#define MOVN(rd, rs, rt) \
217 movn rd, rs, rt
218#define MOVZ(rd, rs, rt) \
219 movz rd, rs, rt
220#endif /* MIPS IV, MIPS V, MIPS32 or MIPS64 */
221
222/*
223 * Stack alignment
224 */
225#if (_MIPS_SIM == _MIPS_SIM_ABI32)
226#define ALSZ 7
227#define ALMASK ~7
228#endif
229#if (_MIPS_SIM == _MIPS_SIM_NABI32) || (_MIPS_SIM == _MIPS_SIM_ABI64)
230#define ALSZ 15
231#define ALMASK ~15
232#endif
233
234/*
235 * Macros to handle different pointer/register sizes for 32/64-bit code
236 */
237
238/*
239 * Size of a register
240 */
241#ifdef __mips64
242#define SZREG 8
243#else
244#define SZREG 4
245#endif
246
247/*
248 * Use the following macros in assemblercode to load/store registers,
249 * pointers etc.
250 */
251#if (_MIPS_SIM == _MIPS_SIM_ABI32)
252#define REG_S sw
253#define REG_L lw
254#define REG_SUBU subu
255#define REG_ADDU addu
256#endif
257#if (_MIPS_SIM == _MIPS_SIM_NABI32) || (_MIPS_SIM == _MIPS_SIM_ABI64)
258#define REG_S sd
259#define REG_L ld
260#define REG_SUBU dsubu
261#define REG_ADDU daddu
262#endif
263
264/*
265 * How to add/sub/load/store/shift C int variables.
266 */
267#if (_MIPS_SZINT == 32)
268#define INT_ADD add
269#define INT_ADDU addu
270#define INT_ADDI addi
271#define INT_ADDIU addiu
272#define INT_SUB sub
273#define INT_SUBU subu
274#define INT_L lw
275#define INT_S sw
276#define INT_SLL sll
277#define INT_SLLV sllv
278#define INT_SRL srl
279#define INT_SRLV srlv
280#define INT_SRA sra
281#define INT_SRAV srav
282#endif
283
284#if (_MIPS_SZINT == 64)
285#define INT_ADD dadd
286#define INT_ADDU daddu
287#define INT_ADDI daddi
288#define INT_ADDIU daddiu
289#define INT_SUB dsub
290#define INT_SUBU dsubu
291#define INT_L ld
292#define INT_S sd
293#define INT_SLL dsll
294#define INT_SLLV dsllv
295#define INT_SRL dsrl
296#define INT_SRLV dsrlv
297#define INT_SRA dsra
298#define INT_SRAV dsrav
299#endif
300
301/*
302 * How to add/sub/load/store/shift C long variables.
303 */
304#if (_MIPS_SZLONG == 32)
305#define LONG_ADD add
306#define LONG_ADDU addu
307#define LONG_ADDI addi
308#define LONG_ADDIU addiu
309#define LONG_SUB sub
310#define LONG_SUBU subu
311#define LONG_L lw
312#define LONG_S sw
313#define LONG_SP swp
314#define LONG_SLL sll
315#define LONG_SLLV sllv
316#define LONG_SRL srl
317#define LONG_SRLV srlv
318#define LONG_SRA sra
319#define LONG_SRAV srav
320
321#define LONG .word
322#define LONGSIZE 4
323#define LONGMASK 3
324#define LONGLOG 2
325#endif
326
327#if (_MIPS_SZLONG == 64)
328#define LONG_ADD dadd
329#define LONG_ADDU daddu
330#define LONG_ADDI daddi
331#define LONG_ADDIU daddiu
332#define LONG_SUB dsub
333#define LONG_SUBU dsubu
334#define LONG_L ld
335#define LONG_S sd
336#define LONG_SP sdp
337#define LONG_SLL dsll
338#define LONG_SLLV dsllv
339#define LONG_SRL dsrl
340#define LONG_SRLV dsrlv
341#define LONG_SRA dsra
342#define LONG_SRAV dsrav
343
344#define LONG .dword
345#define LONGSIZE 8
346#define LONGMASK 7
347#define LONGLOG 3
348#endif
349
350/*
351 * How to add/sub/load/store/shift pointers.
352 */
353#if (_MIPS_SZPTR == 32)
354#define PTR_ADD add
355#define PTR_ADDU addu
356#define PTR_ADDI addi
357#define PTR_ADDIU addiu
358#define PTR_SUB sub
359#define PTR_SUBU subu
360#define PTR_L lw
361#define PTR_S sw
362#define PTR_LA la
363#define PTR_LI li
364#define PTR_SLL sll
365#define PTR_SLLV sllv
366#define PTR_SRL srl
367#define PTR_SRLV srlv
368#define PTR_SRA sra
369#define PTR_SRAV srav
370
371#define PTR_SCALESHIFT 2
372
373#define PTR .word
374#define PTRSIZE 4
375#define PTRLOG 2
376#endif
377
378#if (_MIPS_SZPTR == 64)
379#define PTR_ADD dadd
380#define PTR_ADDU daddu
381#define PTR_ADDI daddi
382#define PTR_ADDIU daddiu
383#define PTR_SUB dsub
384#define PTR_SUBU dsubu
385#define PTR_L ld
386#define PTR_S sd
387#define PTR_LA dla
388#define PTR_LI dli
389#define PTR_SLL dsll
390#define PTR_SLLV dsllv
391#define PTR_SRL dsrl
392#define PTR_SRLV dsrlv
393#define PTR_SRA dsra
394#define PTR_SRAV dsrav
395
396#define PTR_SCALESHIFT 3
397
398#define PTR .dword
399#define PTRSIZE 8
400#define PTRLOG 3
401#endif
402
403/*
404 * Some cp0 registers were extended to 64bit for MIPS III.
405 */
406#if (_MIPS_SIM == _MIPS_SIM_ABI32)
407#define MFC0 mfc0
408#define MTC0 mtc0
409#endif
410#if (_MIPS_SIM == _MIPS_SIM_NABI32) || (_MIPS_SIM == _MIPS_SIM_ABI64)
411#define MFC0 dmfc0
412#define MTC0 dmtc0
413#endif
414
415#define SSNOP sll zero, zero, 1
416
417#ifdef CONFIG_SGI_IP28
418/* Inhibit speculative stores to volatile (e.g.DMA) or invalid addresses. */
419#include <asm/cacheops.h>
420#define R10KCBARRIER(addr) cache Cache_Barrier, addr;
421#else
422#define R10KCBARRIER(addr)
423#endif
424
425#endif /* __ASM_ASM_H */