1 /* libunwind - a platform-independent unwind library
2 Copyright (C) 2003 Hewlett-Packard Co
3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
5 This file is part of libunwind.
7 Permission is hereby granted, free of charge, to any person obtaining
8 a copy of this software and associated documentation files (the
9 "Software"), to deal in the Software without restriction, including
10 without limitation the rights to use, copy, modify, merge, publish,
11 distribute, sublicense, and/or sell copies of the Software, and to
12 permit persons to whom the Software is furnished to do so, subject to
13 the following conditions:
15 The above copyright notice and this permission notice shall be
16 included in all copies or substantial portions of the Software.
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
22 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
26 #include "ia64-test-stack.h"
28 .common stackmem, NSTACKS*STACK_SIZE, 16
30 .global do_unwind_tests
34 #define SAVED_SP_OFF 0
35 #define SAVED_RP_OFF 8
36 #define SAVED_PFS_OFF 16
37 #define SAVED_RNAT_OFF 24
38 #define SAVED_BSP_OFF 32
39 #define SAVED_BSPSTORE_OFF 40
45 alloc r18 = ar.pfs, 0, 0, 0, 0 // read ar.pfs
46 // first, calculate address of new stack:
47 addl r2 = @ltoff(stackmem), gp
48 shl r3 = r8, STACK_SIZE_SHIFT
50 ld8 r2 = [r2] // r2 = &stackmem
52 add r2 = r2, r3 // r2 = stackmem[iteration]
54 addl r3 = STACK_SIZE-FRAME_SIZE, r2 // r3 = &stackframe
57 .vframesp SAVED_SP_OFF+16
58 adds sp = -16, r3 // switch the memory stack
60 adds r3 = (SAVED_RP_OFF - SAVED_SP_OFF), r3
63 .savesp rp, SAVED_RP_OFF+16
64 st8 [r3] = r16, (SAVED_PFS_OFF - SAVED_RP_OFF)
66 .savesp ar.pfs, SAVED_PFS_OFF+16
67 st8 [r3] = r18, (SAVED_BSP_OFF - SAVED_PFS_OFF)
73 .savesp ar.bsp, SAVED_BSP_OFF+16
74 st8 [r3] = r16, (SAVED_BSPSTORE_OFF - SAVED_BSP_OFF)
76 .savesp ar.bspstore, SAVED_BSPSTORE_OFF+16
77 st8 [r3] = r17, (SAVED_RNAT_OFF - SAVED_BSPSTORE_OFF)
79 .savesp ar.rnat, SAVED_RNAT_OFF+16
82 mov ar.bspstore = r2 // switch the backing store
86 // for even iterations, allocate a local variable:
87 tbit.nz p6, p0 = r8, 0
88 (p6) br.cond.sptk.few .skip
90 alloc r2 = ar.pfs, 0, 1, 0, 0
93 .skip: cmp.ne p6, p7 = 0, r8
97 (p6) br.call.sptk.many rp = stack_it // next iteration
98 (p7) br.call.sptk.many rp = do_unwind_tests // time for introspection...
100 // switch back to stack:
102 adds r3 = SAVED_SP_OFF+16, sp
104 ld8 r16 = [r3], (SAVED_RP_OFF-SAVED_SP_OFF);; // saved sp
105 ld8 r17 = [r3], (SAVED_PFS_OFF-SAVED_RP_OFF);; // saved rp
106 ld8 r18 = [r3], (SAVED_RNAT_OFF-SAVED_PFS_OFF);; // saved pfs
107 ld8 r19 = [r3], (SAVED_BSP_OFF-SAVED_RNAT_OFF);; // saved rnat
108 ld8 r20 = [r3], (SAVED_BSPSTORE_OFF-SAVED_BSP_OFF);; // saved bsp
109 ld8 r21 = [r3];; // saved bspstore
113 mov ar.bspstore = r21 // this also restores ar.bsp
123 #define SET_LOC(n) add loc##n = n, r8
124 #define SET_NAT(n) ld8.s loc##n = [r0]
131 alloc loc1 = ar.pfs, 1, 94, 1, 0
136 mov ar.rsc = 0 // put RSE into enforced lazy mode
137 shl r8 = in0, 32 // store iteration # in top 32 bits
139 cmp.eq p6, p7 = 1, in0
141 SET_LOC( 2); SET_LOC( 3)
142 SET_LOC( 4); SET_LOC( 5); SET_LOC( 6); SET_LOC( 7)
143 SET_LOC( 8); SET_LOC( 9); SET_LOC(10); SET_LOC(11)
144 SET_LOC(12); SET_LOC(13); SET_LOC(14); SET_LOC(15)
145 SET_LOC(16); SET_LOC(17); SET_LOC(18); SET_LOC(19)
146 SET_LOC(20); SET_LOC(21); SET_LOC(22); SET_LOC(23)
147 SET_LOC(24); SET_LOC(25); SET_LOC(26); SET_LOC(27)
148 SET_LOC(28); SET_LOC(29); SET_LOC(30); SET_LOC(31)
149 SET_LOC(32); SET_LOC(33); SET_LOC(34); SET_LOC(35)
150 SET_LOC(36); SET_LOC(37); SET_LOC(38); SET_LOC(39)
151 SET_LOC(40); SET_LOC(41); SET_LOC(42); SET_LOC(43)
152 SET_LOC(44); SET_LOC(45); SET_LOC(46); SET_LOC(47)
153 SET_LOC(48); SET_LOC(49); SET_LOC(50); SET_LOC(51)
154 SET_LOC(52); SET_LOC(53); SET_LOC(54); SET_LOC(55)
155 SET_LOC(56); SET_LOC(57); SET_LOC(58); SET_LOC(59)
156 SET_LOC(60); SET_LOC(61); SET_LOC(62); SET_LOC(63)
157 SET_LOC(64); SET_LOC(65); SET_LOC(66); SET_LOC(67)
158 SET_LOC(68); SET_LOC(69); SET_LOC(70); SET_LOC(71)
159 SET_LOC(72); SET_LOC(73); SET_LOC(74); SET_LOC(75)
160 SET_LOC(76); SET_LOC(77); SET_LOC(78); SET_LOC(79)
161 SET_LOC(80); SET_LOC(81); SET_LOC(82); SET_LOC(83)
162 SET_LOC(84); SET_LOC(85); SET_LOC(86); SET_LOC(87)
163 SET_LOC(88); SET_LOC(89); SET_LOC(90); SET_LOC(91)
164 SET_LOC(92); SET_LOC(93)
166 SET_NAT(2); SET_NAT(31); SET_NAT(73); SET_NAT(93)
170 (p6) br.call.sptk.many rp = stack_it
171 (p7) br.call.sptk.many rp = touch_all
181 /* We do not need executable stack. */
182 .section .note.GNU-stack,"",@progbits