2 * Copyright (C) 1999 Hewlett-Packard (Frank Rowand)
3 * Copyright (C) 1999 Philipp Rumpf <prumpf@tux.org>
4 * Copyright (C) 1999 SuSE GmbH
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #ifndef _PARISC_ASSEMBLY_H
22 #define _PARISC_ASSEMBLY_H
32 #define FRAME_SIZE 128
33 #define CALLEE_SAVE_FRAME_SIZE 144
42 #define CALLEE_SAVE_FRAME_SIZE 128
47 # ifdef CONFIG_PARISC64
60 /* the 64-bit pa gnu assembler unfortunately defaults to .level 1.1 or 2.0 so
61 * work around that for now... */
65 #include <asm/offsets.h>
68 #include <asm/asmregs.h>
75 * We provide two versions of each macro to convert from physical
76 * to virtual and vice versa. The "_r1" versions take one argument
77 * register, but trashes r1 to do the conversion. The other
78 * version takes two arguments: a src and destination register.
79 * However, the source and destination registers can not be
83 .macro tophys grvirt, grphys
84 ldil L%(__PAGE_OFFSET), \grphys
85 sub \grvirt, \grphys, \grphys
88 .macro tovirt grphys, grvirt
89 ldil L%(__PAGE_OFFSET), \grvirt
90 add \grphys, \grvirt, \grvirt
94 ldil L%(__PAGE_OFFSET), %r1
99 ldil L%(__PAGE_OFFSET), %r1
115 /* Shift Left - note the r and t can NOT be the same! */
117 dep,z \r, 31-\sa, 32-\sa, \t
120 /* The PA 2.0 shift left */
122 depw,z \r, 31-\sa, 32-\sa, \t
125 /* And the PA 2.0W shift left */
127 depd,z \r, 63-\sa, 64-\sa, \t
130 /* Shift Right - note the r and t can NOT be the same! */
132 extru \r, 31-\sa, 32-\sa, \t
135 /* pa20w version of shift right */
137 extrd,u \r, 63-\sa, 64-\sa, \t
140 /* load 32-bit 'value' into 'reg' compensating for the ldil
141 * sign-extension when running in wide mode.
142 * WARNING!! neither 'value' nor 'reg' can be expressions
143 * containing '.'!!!! */
144 .macro load32 value, reg
146 ldo R%\value(\reg), \reg
152 ldo R%__gp(%r27), %r27
154 ldil L%$global$, %r27
155 ldo R%$global$(%r27), %r27
159 #define SAVE_SP(r, where) mfsp r, %r1 ! STREG %r1, where
160 #define REST_SP(r, where) LDREG where, %r1 ! mtsp %r1, r
161 #define SAVE_CR(r, where) mfctl r, %r1 ! STREG %r1, where
162 #define REST_CR(r, where) LDREG where, %r1 ! mtctl %r1, r
164 .macro save_general regs
165 STREG %r1, PT_GR1 (\regs)
166 STREG %r2, PT_GR2 (\regs)
167 STREG %r3, PT_GR3 (\regs)
168 STREG %r4, PT_GR4 (\regs)
169 STREG %r5, PT_GR5 (\regs)
170 STREG %r6, PT_GR6 (\regs)
171 STREG %r7, PT_GR7 (\regs)
172 STREG %r8, PT_GR8 (\regs)
173 STREG %r9, PT_GR9 (\regs)
174 STREG %r10, PT_GR10(\regs)
175 STREG %r11, PT_GR11(\regs)
176 STREG %r12, PT_GR12(\regs)
177 STREG %r13, PT_GR13(\regs)
178 STREG %r14, PT_GR14(\regs)
179 STREG %r15, PT_GR15(\regs)
180 STREG %r16, PT_GR16(\regs)
181 STREG %r17, PT_GR17(\regs)
182 STREG %r18, PT_GR18(\regs)
183 STREG %r19, PT_GR19(\regs)
184 STREG %r20, PT_GR20(\regs)
185 STREG %r21, PT_GR21(\regs)
186 STREG %r22, PT_GR22(\regs)
187 STREG %r23, PT_GR23(\regs)
188 STREG %r24, PT_GR24(\regs)
189 STREG %r25, PT_GR25(\regs)
190 /* r26 is saved in get_stack and used to preserve a value across virt_map */
191 STREG %r27, PT_GR27(\regs)
192 STREG %r28, PT_GR28(\regs)
193 /* r29 is saved in get_stack and used to point to saved registers */
194 /* r30 stack pointer saved in get_stack */
195 STREG %r31, PT_GR31(\regs)
198 .macro rest_general regs
199 /* r1 used as a temp in rest_stack and is restored there */
200 LDREG PT_GR2 (\regs), %r2
201 LDREG PT_GR3 (\regs), %r3
202 LDREG PT_GR4 (\regs), %r4
203 LDREG PT_GR5 (\regs), %r5
204 LDREG PT_GR6 (\regs), %r6
205 LDREG PT_GR7 (\regs), %r7
206 LDREG PT_GR8 (\regs), %r8
207 LDREG PT_GR9 (\regs), %r9
208 LDREG PT_GR10(\regs), %r10
209 LDREG PT_GR11(\regs), %r11
210 LDREG PT_GR12(\regs), %r12
211 LDREG PT_GR13(\regs), %r13
212 LDREG PT_GR14(\regs), %r14
213 LDREG PT_GR15(\regs), %r15
214 LDREG PT_GR16(\regs), %r16
215 LDREG PT_GR17(\regs), %r17
216 LDREG PT_GR18(\regs), %r18
217 LDREG PT_GR19(\regs), %r19
218 LDREG PT_GR20(\regs), %r20
219 LDREG PT_GR21(\regs), %r21
220 LDREG PT_GR22(\regs), %r22
221 LDREG PT_GR23(\regs), %r23
222 LDREG PT_GR24(\regs), %r24
223 LDREG PT_GR25(\regs), %r25
224 LDREG PT_GR26(\regs), %r26
225 LDREG PT_GR27(\regs), %r27
226 LDREG PT_GR28(\regs), %r28
227 /* r29 points to register save area, and is restored in rest_stack */
228 /* r30 stack pointer restored in rest_stack */
229 LDREG PT_GR31(\regs), %r31
233 fstd,ma %fr0, 8(\regs)
234 fstd,ma %fr1, 8(\regs)
235 fstd,ma %fr2, 8(\regs)
236 fstd,ma %fr3, 8(\regs)
237 fstd,ma %fr4, 8(\regs)
238 fstd,ma %fr5, 8(\regs)
239 fstd,ma %fr6, 8(\regs)
240 fstd,ma %fr7, 8(\regs)
241 fstd,ma %fr8, 8(\regs)
242 fstd,ma %fr9, 8(\regs)
243 fstd,ma %fr10, 8(\regs)
244 fstd,ma %fr11, 8(\regs)
245 fstd,ma %fr12, 8(\regs)
246 fstd,ma %fr13, 8(\regs)
247 fstd,ma %fr14, 8(\regs)
248 fstd,ma %fr15, 8(\regs)
249 fstd,ma %fr16, 8(\regs)
250 fstd,ma %fr17, 8(\regs)
251 fstd,ma %fr18, 8(\regs)
252 fstd,ma %fr19, 8(\regs)
253 fstd,ma %fr20, 8(\regs)
254 fstd,ma %fr21, 8(\regs)
255 fstd,ma %fr22, 8(\regs)
256 fstd,ma %fr23, 8(\regs)
257 fstd,ma %fr24, 8(\regs)
258 fstd,ma %fr25, 8(\regs)
259 fstd,ma %fr26, 8(\regs)
260 fstd,ma %fr27, 8(\regs)
261 fstd,ma %fr28, 8(\regs)
262 fstd,ma %fr29, 8(\regs)
263 fstd,ma %fr30, 8(\regs)
269 fldd,mb -8(\regs), %fr30
270 fldd,mb -8(\regs), %fr29
271 fldd,mb -8(\regs), %fr28
272 fldd,mb -8(\regs), %fr27
273 fldd,mb -8(\regs), %fr26
274 fldd,mb -8(\regs), %fr25
275 fldd,mb -8(\regs), %fr24
276 fldd,mb -8(\regs), %fr23
277 fldd,mb -8(\regs), %fr22
278 fldd,mb -8(\regs), %fr21
279 fldd,mb -8(\regs), %fr20
280 fldd,mb -8(\regs), %fr19
281 fldd,mb -8(\regs), %fr18
282 fldd,mb -8(\regs), %fr17
283 fldd,mb -8(\regs), %fr16
284 fldd,mb -8(\regs), %fr15
285 fldd,mb -8(\regs), %fr14
286 fldd,mb -8(\regs), %fr13
287 fldd,mb -8(\regs), %fr12
288 fldd,mb -8(\regs), %fr11
289 fldd,mb -8(\regs), %fr10
290 fldd,mb -8(\regs), %fr9
291 fldd,mb -8(\regs), %fr8
292 fldd,mb -8(\regs), %fr7
293 fldd,mb -8(\regs), %fr6
294 fldd,mb -8(\regs), %fr5
295 fldd,mb -8(\regs), %fr4
296 fldd,mb -8(\regs), %fr3
297 fldd,mb -8(\regs), %fr2
298 fldd,mb -8(\regs), %fr1
299 fldd,mb -8(\regs), %fr0
304 std,ma %r3, CALLEE_SAVE_FRAME_SIZE(%r30)
342 ldd,mb -CALLEE_SAVE_FRAME_SIZE(%r30), %r3
345 #else /* ! __LP64__ */
348 stw,ma %r3, CALLEE_SAVE_FRAME_SIZE(%r30)
386 ldw,mb -CALLEE_SAVE_FRAME_SIZE(%r30), %r3
388 #endif /* ! __LP64__ */
390 .macro save_specials regs
392 SAVE_SP (%sr0, PT_SR0 (\regs))
393 SAVE_SP (%sr1, PT_SR1 (\regs))
394 SAVE_SP (%sr2, PT_SR2 (\regs))
395 SAVE_SP (%sr3, PT_SR3 (\regs))
396 SAVE_SP (%sr4, PT_SR4 (\regs))
397 SAVE_SP (%sr5, PT_SR5 (\regs))
398 SAVE_SP (%sr6, PT_SR6 (\regs))
399 SAVE_SP (%sr7, PT_SR7 (\regs))
401 SAVE_CR (%cr17, PT_IASQ0(\regs))
403 SAVE_CR (%cr17, PT_IASQ1(\regs))
405 SAVE_CR (%cr18, PT_IAOQ0(\regs))
407 SAVE_CR (%cr18, PT_IAOQ1(\regs))
410 /* cr11 (sar) is a funny one. 5 bits on PA1.1 and 6 bit on PA2.0
411 * For PA2.0 mtsar or mtctl always write 6 bits, but mfctl only
412 * reads 5 bits. Use mfctl,w to read all six bits. Otherwise
413 * we lose the 6th bit on a save/restore over interrupt.
416 STREG %r1, PT_SAR (\regs)
418 SAVE_CR (%cr11, PT_SAR (\regs))
420 SAVE_CR (%cr19, PT_IIR (\regs))
423 * Code immediately following this macro (in intr_save) relies
424 * on r8 containing ipsw.
427 STREG %r8, PT_PSW(\regs)
430 .macro rest_specials regs
432 REST_SP (%sr0, PT_SR0 (\regs))
433 REST_SP (%sr1, PT_SR1 (\regs))
434 REST_SP (%sr2, PT_SR2 (\regs))
435 REST_SP (%sr3, PT_SR3 (\regs))
436 REST_SP (%sr4, PT_SR4 (\regs))
437 REST_SP (%sr5, PT_SR5 (\regs))
438 REST_SP (%sr6, PT_SR6 (\regs))
439 REST_SP (%sr7, PT_SR7 (\regs))
441 REST_CR (%cr17, PT_IASQ0(\regs))
442 REST_CR (%cr17, PT_IASQ1(\regs))
444 REST_CR (%cr18, PT_IAOQ0(\regs))
445 REST_CR (%cr18, PT_IAOQ1(\regs))
447 REST_CR (%cr11, PT_SAR (\regs))
449 REST_CR (%cr22, PT_PSW (\regs))
452 #endif /* __ASSEMBLY__ */