1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Copyright (C) 1999 Hewlett-Packard (Frank Rowand)
4 * Copyright (C) 1999 Philipp Rumpf <prumpf@tux.org>
5 * Copyright (C) 1999 SuSE GmbH
8 #ifndef _PARISC_ASSEMBLY_H
9 #define _PARISC_ASSEMBLY_H
11 #define CALLEE_FLOAT_FRAME_SIZE 80
22 #define COND(x) * ## x
24 #define FRAME_SIZE 128
25 #define CALLEE_REG_FRAME_SIZE 144
27 #define ASM_ULONG_INSN .dword
28 #else /* CONFIG_64BIT */
40 #define CALLEE_REG_FRAME_SIZE 128
42 #define ASM_ULONG_INSN .word
45 #define CALLEE_SAVE_FRAME_SIZE (CALLEE_REG_FRAME_SIZE + CALLEE_FLOAT_FRAME_SIZE)
51 # define PA_ASM_LEVEL 2.0w
53 # define PA_ASM_LEVEL 2.0
58 #define PA_ASM_LEVEL 1.1
64 /* the 64-bit pa gnu assembler unfortunately defaults to .level 1.1 or 2.0 so
65 * work around that for now... */
69 #include <asm/asm-offsets.h>
71 #include <asm/types.h>
73 #include <asm/asmregs.h>
80 * We provide two versions of each macro to convert from physical
81 * to virtual and vice versa. The "_r1" versions take one argument
82 * register, but trashes r1 to do the conversion. The other
83 * version takes two arguments: a src and destination register.
84 * However, the source and destination registers can not be
88 .macro tophys grvirt, grphys
89 ldil L%(__PAGE_OFFSET), \grphys
90 sub \grvirt, \grphys, \grphys
93 .macro tovirt grphys, grvirt
94 ldil L%(__PAGE_OFFSET), \grvirt
95 add \grphys, \grvirt, \grvirt
99 ldil L%(__PAGE_OFFSET), %r1
104 ldil L%(__PAGE_OFFSET), %r1
120 zdep \r, 31-(\sa), 32-(\sa), \t
123 /* And the PA 2.0W shift left */
125 depd,z \r, 63-(\sa), 64-(\sa), \t
128 /* Shift Right - note the r and t can NOT be the same! */
130 extru \r, 31-(\sa), 32-(\sa), \t
133 /* pa20w version of shift right */
135 extrd,u \r, 63-(\sa), 64-(\sa), \t
138 /* load 32-bit 'value' into 'reg' compensating for the ldil
139 * sign-extension when running in wide mode.
140 * WARNING!! neither 'value' nor 'reg' can be expressions
141 * containing '.'!!!! */
142 .macro load32 value, reg
144 ldo R%\value(\reg), \reg
150 ldo R%__gp(%r27), %r27
152 ldil L%$global$, %r27
153 ldo R%$global$(%r27), %r27
157 #define SAVE_SP(r, where) mfsp r, %r1 ! STREG %r1, where
158 #define REST_SP(r, where) LDREG where, %r1 ! mtsp %r1, r
159 #define SAVE_CR(r, where) mfctl r, %r1 ! STREG %r1, where
160 #define REST_CR(r, where) LDREG where, %r1 ! mtctl %r1, r
162 .macro save_general regs
163 STREG %r1, PT_GR1 (\regs)
164 STREG %r2, PT_GR2 (\regs)
165 STREG %r3, PT_GR3 (\regs)
166 STREG %r4, PT_GR4 (\regs)
167 STREG %r5, PT_GR5 (\regs)
168 STREG %r6, PT_GR6 (\regs)
169 STREG %r7, PT_GR7 (\regs)
170 STREG %r8, PT_GR8 (\regs)
171 STREG %r9, PT_GR9 (\regs)
172 STREG %r10, PT_GR10(\regs)
173 STREG %r11, PT_GR11(\regs)
174 STREG %r12, PT_GR12(\regs)
175 STREG %r13, PT_GR13(\regs)
176 STREG %r14, PT_GR14(\regs)
177 STREG %r15, PT_GR15(\regs)
178 STREG %r16, PT_GR16(\regs)
179 STREG %r17, PT_GR17(\regs)
180 STREG %r18, PT_GR18(\regs)
181 STREG %r19, PT_GR19(\regs)
182 STREG %r20, PT_GR20(\regs)
183 STREG %r21, PT_GR21(\regs)
184 STREG %r22, PT_GR22(\regs)
185 STREG %r23, PT_GR23(\regs)
186 STREG %r24, PT_GR24(\regs)
187 STREG %r25, PT_GR25(\regs)
188 /* r26 is saved in get_stack and used to preserve a value across virt_map */
189 STREG %r27, PT_GR27(\regs)
190 STREG %r28, PT_GR28(\regs)
191 /* r29 is saved in get_stack and used to point to saved registers */
192 /* r30 stack pointer saved in get_stack */
193 STREG %r31, PT_GR31(\regs)
196 .macro rest_general regs
197 /* r1 used as a temp in rest_stack and is restored there */
198 LDREG PT_GR2 (\regs), %r2
199 LDREG PT_GR3 (\regs), %r3
200 LDREG PT_GR4 (\regs), %r4
201 LDREG PT_GR5 (\regs), %r5
202 LDREG PT_GR6 (\regs), %r6
203 LDREG PT_GR7 (\regs), %r7
204 LDREG PT_GR8 (\regs), %r8
205 LDREG PT_GR9 (\regs), %r9
206 LDREG PT_GR10(\regs), %r10
207 LDREG PT_GR11(\regs), %r11
208 LDREG PT_GR12(\regs), %r12
209 LDREG PT_GR13(\regs), %r13
210 LDREG PT_GR14(\regs), %r14
211 LDREG PT_GR15(\regs), %r15
212 LDREG PT_GR16(\regs), %r16
213 LDREG PT_GR17(\regs), %r17
214 LDREG PT_GR18(\regs), %r18
215 LDREG PT_GR19(\regs), %r19
216 LDREG PT_GR20(\regs), %r20
217 LDREG PT_GR21(\regs), %r21
218 LDREG PT_GR22(\regs), %r22
219 LDREG PT_GR23(\regs), %r23
220 LDREG PT_GR24(\regs), %r24
221 LDREG PT_GR25(\regs), %r25
222 LDREG PT_GR26(\regs), %r26
223 LDREG PT_GR27(\regs), %r27
224 LDREG PT_GR28(\regs), %r28
225 /* r29 points to register save area, and is restored in rest_stack */
226 /* r30 stack pointer restored in rest_stack */
227 LDREG PT_GR31(\regs), %r31
231 fstd,ma %fr0, 8(\regs)
232 fstd,ma %fr1, 8(\regs)
233 fstd,ma %fr2, 8(\regs)
234 fstd,ma %fr3, 8(\regs)
235 fstd,ma %fr4, 8(\regs)
236 fstd,ma %fr5, 8(\regs)
237 fstd,ma %fr6, 8(\regs)
238 fstd,ma %fr7, 8(\regs)
239 fstd,ma %fr8, 8(\regs)
240 fstd,ma %fr9, 8(\regs)
241 fstd,ma %fr10, 8(\regs)
242 fstd,ma %fr11, 8(\regs)
243 fstd,ma %fr12, 8(\regs)
244 fstd,ma %fr13, 8(\regs)
245 fstd,ma %fr14, 8(\regs)
246 fstd,ma %fr15, 8(\regs)
247 fstd,ma %fr16, 8(\regs)
248 fstd,ma %fr17, 8(\regs)
249 fstd,ma %fr18, 8(\regs)
250 fstd,ma %fr19, 8(\regs)
251 fstd,ma %fr20, 8(\regs)
252 fstd,ma %fr21, 8(\regs)
253 fstd,ma %fr22, 8(\regs)
254 fstd,ma %fr23, 8(\regs)
255 fstd,ma %fr24, 8(\regs)
256 fstd,ma %fr25, 8(\regs)
257 fstd,ma %fr26, 8(\regs)
258 fstd,ma %fr27, 8(\regs)
259 fstd,ma %fr28, 8(\regs)
260 fstd,ma %fr29, 8(\regs)
261 fstd,ma %fr30, 8(\regs)
267 fldd,mb -8(\regs), %fr30
268 fldd,mb -8(\regs), %fr29
269 fldd,mb -8(\regs), %fr28
270 fldd,mb -8(\regs), %fr27
271 fldd,mb -8(\regs), %fr26
272 fldd,mb -8(\regs), %fr25
273 fldd,mb -8(\regs), %fr24
274 fldd,mb -8(\regs), %fr23
275 fldd,mb -8(\regs), %fr22
276 fldd,mb -8(\regs), %fr21
277 fldd,mb -8(\regs), %fr20
278 fldd,mb -8(\regs), %fr19
279 fldd,mb -8(\regs), %fr18
280 fldd,mb -8(\regs), %fr17
281 fldd,mb -8(\regs), %fr16
282 fldd,mb -8(\regs), %fr15
283 fldd,mb -8(\regs), %fr14
284 fldd,mb -8(\regs), %fr13
285 fldd,mb -8(\regs), %fr12
286 fldd,mb -8(\regs), %fr11
287 fldd,mb -8(\regs), %fr10
288 fldd,mb -8(\regs), %fr9
289 fldd,mb -8(\regs), %fr8
290 fldd,mb -8(\regs), %fr7
291 fldd,mb -8(\regs), %fr6
292 fldd,mb -8(\regs), %fr5
293 fldd,mb -8(\regs), %fr4
294 fldd,mb -8(\regs), %fr3
295 fldd,mb -8(\regs), %fr2
296 fldd,mb -8(\regs), %fr1
297 fldd,mb -8(\regs), %fr0
300 .macro callee_save_float
301 fstd,ma %fr12, 8(%r30)
302 fstd,ma %fr13, 8(%r30)
303 fstd,ma %fr14, 8(%r30)
304 fstd,ma %fr15, 8(%r30)
305 fstd,ma %fr16, 8(%r30)
306 fstd,ma %fr17, 8(%r30)
307 fstd,ma %fr18, 8(%r30)
308 fstd,ma %fr19, 8(%r30)
309 fstd,ma %fr20, 8(%r30)
310 fstd,ma %fr21, 8(%r30)
313 .macro callee_rest_float
314 fldd,mb -8(%r30), %fr21
315 fldd,mb -8(%r30), %fr20
316 fldd,mb -8(%r30), %fr19
317 fldd,mb -8(%r30), %fr18
318 fldd,mb -8(%r30), %fr17
319 fldd,mb -8(%r30), %fr16
320 fldd,mb -8(%r30), %fr15
321 fldd,mb -8(%r30), %fr14
322 fldd,mb -8(%r30), %fr13
323 fldd,mb -8(%r30), %fr12
328 std,ma %r3, CALLEE_REG_FRAME_SIZE(%r30)
366 ldd,mb -CALLEE_REG_FRAME_SIZE(%r30), %r3
369 #else /* ! CONFIG_64BIT */
372 stw,ma %r3, CALLEE_REG_FRAME_SIZE(%r30)
410 ldw,mb -CALLEE_REG_FRAME_SIZE(%r30), %r3
412 #endif /* ! CONFIG_64BIT */
414 .macro save_specials regs
416 SAVE_SP (%sr0, PT_SR0 (\regs))
417 SAVE_SP (%sr1, PT_SR1 (\regs))
418 SAVE_SP (%sr2, PT_SR2 (\regs))
419 SAVE_SP (%sr3, PT_SR3 (\regs))
420 SAVE_SP (%sr4, PT_SR4 (\regs))
421 SAVE_SP (%sr5, PT_SR5 (\regs))
422 SAVE_SP (%sr6, PT_SR6 (\regs))
424 SAVE_CR (%cr17, PT_IASQ0(\regs))
426 SAVE_CR (%cr17, PT_IASQ1(\regs))
428 SAVE_CR (%cr18, PT_IAOQ0(\regs))
430 SAVE_CR (%cr18, PT_IAOQ1(\regs))
433 /* cr11 (sar) is a funny one. 5 bits on PA1.1 and 6 bit on PA2.0
434 * For PA2.0 mtsar or mtctl always write 6 bits, but mfctl only
435 * reads 5 bits. Use mfctl,w to read all six bits. Otherwise
436 * we lose the 6th bit on a save/restore over interrupt.
439 STREG %r1, PT_SAR (\regs)
441 SAVE_CR (%cr11, PT_SAR (\regs))
443 SAVE_CR (%cr19, PT_IIR (\regs))
446 * Code immediately following this macro (in intr_save) relies
447 * on r8 containing ipsw.
450 STREG %r8, PT_PSW(\regs)
453 .macro rest_specials regs
455 REST_SP (%sr0, PT_SR0 (\regs))
456 REST_SP (%sr1, PT_SR1 (\regs))
457 REST_SP (%sr2, PT_SR2 (\regs))
458 REST_SP (%sr3, PT_SR3 (\regs))
459 REST_SP (%sr4, PT_SR4 (\regs))
460 REST_SP (%sr5, PT_SR5 (\regs))
461 REST_SP (%sr6, PT_SR6 (\regs))
462 REST_SP (%sr7, PT_SR7 (\regs))
464 REST_CR (%cr17, PT_IASQ0(\regs))
465 REST_CR (%cr17, PT_IASQ1(\regs))
467 REST_CR (%cr18, PT_IAOQ0(\regs))
468 REST_CR (%cr18, PT_IAOQ1(\regs))
470 REST_CR (%cr11, PT_SAR (\regs))
472 REST_CR (%cr22, PT_PSW (\regs))
476 /* First step to create a "relied upon translation"
477 * See PA 2.0 Arch. page F-4 and F-5.
479 * The ssm was originally necessary due to a "PCxT bug".
480 * But someone decided it needed to be added to the architecture
481 * and this "feature" went into rev3 of PA-RISC 1.1 Arch Manual.
482 * It's been carried forward into PA 2.0 Arch as well. :^(
484 * "ssm 0,%r0" is a NOP with side effects (prefetch barrier).
485 * rsm/ssm prevents the ifetch unit from speculatively fetching
486 * instructions past this line in the code stream.
487 * PA 2.0 processor will single step all insn in the same QUAD (4 insn).
501 * ASM_EXCEPTIONTABLE_ENTRY
503 * Creates an exception table entry.
504 * Do not convert to a assembler macro. This won't work.
506 #define ASM_EXCEPTIONTABLE_ENTRY(fault_addr, except_addr) \
507 .section __ex_table,"aw" ! \
508 .word (fault_addr - .), (except_addr - .) ! \
512 #endif /* __ASSEMBLY__ */