Annotation of sys/lib/libkern/arch/hppa64/bcopy.m4, Revision 1.1.1.1
1.1 nbrk 1: define(_rcsid,``$OpenBSD: bcopy.m4,v 1.2 2005/08/01 12:10:26 miod Exp $'')dnl
2: dnl
3: dnl
4: dnl This is the source file for bcopy.S, spcopy.S
5: dnl
6: dnl
7: define(`versionmacro',substr(_rcsid,1,eval(len(_rcsid)-2)))dnl
8: dnl
9: /* This is a generated file. DO NOT EDIT. */
10: /*
11: * Generated from:
12: *
13: * versionmacro
14: */
15: /*
16: * Copyright (c) 1999,2004 Michael Shalayeff
17: * All rights reserved.
18: *
19: * Permission to use, copy, modify, and distribute this software for any
20: * purpose with or without fee is hereby granted, provided that the above
21: * copyright notice and this permission notice appear in all copies.
22: *
23: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
24: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
25: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
26: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
27: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN
28: * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
29: * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
30: */
31: dnl
32: dnl macro: L(`%arg1',`%arg2')
33: dnl synopsis: creates an assembly label based on args resulting in $%arg1.%arg2
34: dnl
35: define(`L', `$$1.$2')dnl
36: dnl
37: dnl
38: dnl
39: define(`STWS',`ifelse($5, `u',dnl
40: `ifelse($1, `1', `vshd $4, %r`$1', %r31
41: stbys,B,m %r31, F`'4($2, $3)',
42: `0', `0', `vshd %r`'decr($1), %r`$1', %r31
43: stws,M %r31, F`'4($2, $3)')',dnl
44: `0', `0',
45: `ifelse($1, `1',
46: `stbys,B`'ifelse(B, `b', `,m ', `0', `0', ` ')`'%r`$1', F`'4($2, $3)',
47: `0', `0', `stws,M %r`$1', F`'4($2, $3)')')')dnl
48: define(`STWSS', `ifelse(`$3', `19', `dnl',
49: `0', `0', `STWSS($1, $2, eval($3 - 1), $4, $5)')
50: STWS($3, $1, $2, $4, $5)dnl
51: ')dnl
52: define(`LDWSS', `ifelse(`$3', `19', `dnl',
53: `0', `0', `LDWSS($1, $2, eval($3 - 1))')
54: ldws,M F`'4($1, $2), %r`'$3`'dnl
55: ')dnl
56: dnl
57: dnl copy data in 4-words blocks
58: dnl
59: define(`hppa_blcopy',`
60: addi -16, $6, $6
61: L($1, `loop16'`$7')
62: ldw F 32($2, $3), %r0
63: ifelse(F, `-', `dnl
64: addi F`'4, $5, $5', `0', `0', `dnl')
65: LDWSS($2, $3, 22)
66: STWSS($4, $5, 21, `%ret1', $7)
67: ifelse($7, `u', `dnl
68: STWS(4, $4, $5, `%ret1', $7)', $7, `a', `dnl')
69: addib,>= -16, $6, L($1, `loop16'`$7')
70: ifelse($7, `a', `dnl
71: STWS(4, $4, $5, `%ret1', $7)dnl
72: ', $7, `u', `dnl
73: copy %r19, %ret1')')dnl
74: dnl
75: dnl copy in words
76: dnl
77: define(`STWL', `addib,<,n 12, $6, L($1, cleanup)
78: ifelse($7, `u', ` copy %ret1, %r22', $7, `a', `dnl')
79: L($1, word)
80: ldws,M F`'4($2, $3), %r22
81: addib,>= -4, $6, L($1, word)
82: stws,M %r22, F`'4($4, $5)
83:
84: L($1, cleanup)
85: addib,=,n 4, $6, L($1, done)
86: ldws 0($2, $3), %r22
87: add $5, $6, $5
88: b L($1, done)
89: stbys,E %r22, 0($4, $5)
90: ')
91: dnl
92: dnl
93: dnl parameters:
94: dnl $1 name
95: dnl $2 source space
96: dnl $3 source address
97: dnl $4 destination space
98: dnl $5 destination address
99: dnl $6 length
100: dnl $7 direction
101: dnl
102: define(hppa_copy,
103: `dnl
104: dnl
105: dnl if direction is `-' (backwards copy), adjust src, dst
106: dnl
107: ifelse($7,`-', `add $3, $6, $3
108: add $5, $6, $5
109: define(`F', `-')dnl
110: define(`R', `')dnl
111: define(`M', `mb')dnl
112: define(`B', `e')dnl
113: define(`E', `b')dnl
114: ',dnl ifelse
115: `0',`0',
116: `define(`F', `')dnl
117: define(`R', `-')dnl
118: define(`M', `ma')dnl
119: define(`B', `b')dnl
120: define(`E', `e')dnl
121: ')dnl ifelse
122:
123: ifelse($7,`-', `', `0',`0',
124: ` comib,>=,n 15, $6, L($1, byte)
125:
126: extru $3, 31, 2, %r20
127: extru $5, 31, 2, %r19
128: add $6, %r19, $6
129: comb,<> %r20, %r19, L($1, unaligned)
130: dep %r0, 31, 2, $3
131: hppa_blcopy($1, $2, $3, $4, $5, $6, `a')
132:
133: STWL($1, $2, $3, $4, $5, $6, `a')dnl
134:
135: L($1, unaligned)
136: sub,>= %r19, %r20, %r21
137: ldwm F`'4($2, $3), %ret1
138: zdep %r21, 28, 29, %r22
139: mtsar %r22
140: hppa_blcopy($1, $2, $3, $4, $5, $6, `u')
141:
142: dnl STWL($1, $2, $3, $4, $5, $6, `u')
143: addib,<,n 12, $6, L($1, cleanup_un)
144: L($1, word_un)
145: ldws,M F`'4($2, $3), %r22
146: vshd %ret1, %r22, %r21
147: addib,< -4, $6, L($1, cleanup1_un)
148: stws,M %r21, F`'4($4, $5)
149: ldws,M F`'4($2, $3), %ret1
150: vshd %r22, %ret1, %r21
151: addib,>= -4, $6, L($1, word_un)
152: stws,M %r21, F`'4($4, $5)
153:
154: L($1, cleanup_un)
155: addib,<=,n 4, $6, L($1, done)
156: mfctl %sar, %r19
157: add $5, $6, $5
158: extru %r19, 28, 2, %r19
159: sub,<= $6, %r19, %r0
160: ldws,M F`'4($2, $3), %r22
161: vshd %ret1, %r22, %r21
162: b L($1, done)
163: stbys,E %r21, 0($4, $5)
164:
165: L($1, cleanup1_un)
166: b L($1, cleanup_un)
167: copy %r22, %ret1
168: ')dnl ifelse
169:
170: L($1, byte)
171: comb,>=,n %r0, $6, L($1, done)
172: L($1, byte_loop)
173: ldbs,M F`'1($2, $3), %r22
174: addib,<> -1, $6, L($1, byte_loop)
175: stbs,M %r22, F`'1($4, $5)
176: L($1, done)
177: ')dnl
178: `
179: #undef _LOCORE
180: #define _LOCORE
181: #include <machine/asm.h>
182: #include <machine/frame.h>
183: '
184: ifelse(NAME, `bcopy',
185: `
186: #if defined(LIBC_SCCS)
187: .text
188: .asciz "versionmacro"
189: .align 4
190: #endif
191:
192: LEAF_ENTRY(memcpy)
193: ALTENTRY(memmove)
194: copy %arg0, %r22
195: copy %arg1, %arg0
196: copy %r22, %arg1
197: copy %arg0, %ret0
198: ALTENTRY(ovbcopy)
199: ALTENTRY(bcopy)
200: comb,>,n %arg1, %arg0, L(bcopy, reverse)
201: hppa_copy(bcopy_f, %sr0, %arg0, %sr0, %arg1, %arg2, `+')
202: bv %r0(%rp)
203: nop
204: L(bcopy, reverse)
205: hppa_copy(bcopy_r, %sr0, %arg0, %sr0, %arg1, %arg2, `-')
206: bv %r0(%rp)
207: nop
208: EXIT(memcpy)
209: ')dnl
210: dnl
211: ifelse(NAME, `spcopy',
212: `
213: #ifdef _KERNEL
214: #include <assym.h>
215:
216: /*
217: * int spcopy (pa_space_t ssp, const void *src, pa_space_t dsp, void *dst,
218: * size_t size)
219: * do a space to space bcopy.
220: *
221: * assumes that spaces do not clash, otherwise we lose
222: */
223: .import copy_on_fault, code
224: LEAF_ENTRY(spcopy)
225: sub,<> %r0, arg4, %r0
226: bv %r0(%rp)
227: nop
228: `
229: std %rp, HPPA_FRAME_RP(%sp)
230: ldo HPPA_FRAME_SIZE(%sp), %sp
231: /* setup fault handler */
232: mfctl %cr24, %arg1
233: ldd CI_CURPROC(%arg1), %r1
234: ldil L%copy_on_fault, %r21
235: ldd P_ADDR(%r20), %r2
236: ldo R%copy_on_fault(%r21), %r21
237: ldd PCB_ONFAULT+U_PCB(%r2), %r1
238: std %r21, PCB_ONFAULT+U_PCB(%r2)
239: '
240: mtsp %arg0, %sr1
241: mtsp %arg2, %sr2
242:
243: copy arg4, %ret0
244: hppa_copy(spcopy, %sr1, %arg1, %sr2, %arg3, %ret0, `+')
245:
246: mtsp %r0, %sr1
247: mtsp %r0, %sr2
248: /* reset fault handler */
249: std %r1, PCB_ONFAULT+U_PCB(%r2)
250: ldo -HPPA_FRAME_SIZE(%sp), %sp
251: ldd HPPA_FRAME_RP(%sp), %rp
252: bv %r0(%rp)
253: copy %r0, %ret0
254: EXIT(spcopy)
255: #endif
256: ')dnl
257:
258: .end
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