1/* Copyright (C) 2000, 2001, 2003, 2005 Free Software Foundation, Inc.
2   Contributed by Jes Sorensen, <Jes.Sorensen@cern.ch>
3
4   This file is part of GCC.
5
6   GCC 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)
9   any later version.
10
11   GCC 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.
15
16   You should have received a copy of the GNU General Public License
17   along with GCC; see the file COPYING.  If not, write to
18   the Free Software Foundation, 51 Franklin Street, Fifth Floor,
19   Boston, MA 02110-1301, USA.  */
20
21/* As a special exception, if you link this library with other files,
22   some of which are compiled with GCC, to produce an executable,
23   this library does not by itself cause the resulting executable
24   to be covered by the GNU General Public License.
25   This exception does not however invalidate any other reasons why
26   the executable file might be covered by the GNU General Public License.  */
27
28#include "auto-host.h"
29
30.section .ctors,"aw","progbits"
31	.align	8
32__CTOR_LIST__:
33	data8	-1
34
35.section .dtors,"aw","progbits"
36	.align	8
37__DTOR_LIST__:
38	data8	-1
39
40.section .jcr,"aw","progbits"
41	.align	8
42__JCR_LIST__:
43
44.section .sdata
45	.type dtor_ptr,@object
46	.size dtor_ptr,8
47dtor_ptr:
48	data8	@gprel(__DTOR_LIST__ + 8)
49
50	/* A handle for __cxa_finalize to manage c++ local destructors.  */
51	.global __dso_handle
52	.type __dso_handle,@object
53	.size __dso_handle,8
54#ifdef SHARED
55	.section .data
56__dso_handle:
57	data8	__dso_handle
58#else
59	.section .bss
60	.align 8
61__dso_handle:
62	.skip	8
63#endif
64	.hidden __dso_handle
65
66
67#ifdef HAVE_INITFINI_ARRAY
68
69.section .fini_array, "a"
70	data8 @fptr(__do_global_dtors_aux)
71
72.section .init_array, "a"
73	data8 @fptr(__do_jv_register_classes)
74	data8 @fptr(__do_global_ctors_aux)
75
76#else /* !HAVE_INITFINI_ARRAY */
77/*
78 * Fragment of the ELF _fini routine that invokes our dtor cleanup.
79 *
80 * We make the call by indirection, because in large programs the 
81 * .fini and .init sections are not in range of the destination, and
82 * we cannot allow the linker to insert a stub at the end of this
83 * fragment of the _fini function.  Further, Itanium does not implement
84 * the long branch instructions, and we do not wish every program to
85 * trap to the kernel for emulation.
86 *
87 * Note that we require __do_global_dtors_aux to preserve the GP,
88 * so that the next fragment in .fini gets the right value.
89 */
90.section .fini,"ax","progbits"
91	{ .mlx
92	  movl r2 = @pcrel(__do_global_dtors_aux - 16)
93	}
94	{ .mii
95	  mov r3 = ip
96	  ;;
97	  add r2 = r2, r3
98	  ;;
99	}
100	{ .mib
101	  nop 0
102	  mov b6 = r2
103	  br.call.sptk.many b0 = b6
104	}
105
106/* Likewise for _init.  */
107
108.section .init,"ax","progbits"
109	{ .mlx
110	  movl r2 = @pcrel(__do_jv_register_classes - 16)
111	}
112	{ .mii
113	  mov r3 = ip
114	  ;;
115	  add r2 = r2, r3
116	  ;;
117	}
118	{ .mib
119	  nop 0
120	  mov b6 = r2
121	  br.call.sptk.many b0 = b6
122	}
123#endif /* !HAVE_INITFINI_ARRAY */
124
125.section .text
126	.align	32
127	.proc	__do_global_dtors_aux
128__do_global_dtors_aux:
129	.prologue
130#ifndef SHARED
131	.save ar.pfs, r35
132	alloc loc3 = ar.pfs, 0, 4, 1, 0
133	addl loc0 = @gprel(dtor_ptr), gp
134	.save rp, loc1
135	mov loc1 = rp
136	.body
137
138	mov loc2 = gp
139	nop 0
140	br.sptk.many .entry
141#else
142	/*
143		if (__cxa_finalize)
144		  __cxa_finalize(__dso_handle)
145	*/
146	.save ar.pfs, r35
147	alloc loc3 = ar.pfs, 0, 4, 1, 0
148	addl loc0 = @gprel(dtor_ptr), gp
149	addl r16 = @ltoff(@fptr(__cxa_finalize)), gp
150	;;
151
152	ld8 r16 = [r16]
153	;;
154	addl out0 = @ltoff(__dso_handle), gp
155	cmp.ne p7, p0 = r0, r16
156	;;
157
158	ld8 out0 = [out0]
159(p7)	ld8 r18 = [r16], 8
160	.save rp, loc1
161	mov loc1 = rp
162	.body
163	;;
164
165	mov loc2 = gp
166(p7)	ld8 gp = [r16]
167(p7)	mov b6 = r18
168
169	nop 0
170	nop 0
171(p7)	br.call.sptk.many rp = b6
172	;;
173
174	nop 0
175	nop 0
176	br.sptk.many .entry
177#endif
178	/*
179		do {
180		  dtor_ptr++;
181		  (*(dtor_ptr-1)) ();
182		} while (dtor_ptr);
183	*/
184.loop:
185	st8 [loc0] = r15		// update dtor_ptr (in memory)
186	ld8 r17 = [r16], 8		// r17 <- dtor's entry-point
187	nop 0
188	;;
189
190	ld8 gp = [r16]			// gp <- dtor's gp
191	mov b6 = r17
192	br.call.sptk.many rp = b6
193
194.entry:	ld8 r15 = [loc0]		// r15 <- dtor_ptr (gp-relative)
195	;;
196	add r16 = r15, loc2		// r16 <- dtor_ptr (absolute)
197	adds r15 = 8, r15
198	;;
199
200	ld8 r16 = [r16]			// r16 <- pointer to dtor's fdesc
201	mov rp = loc1
202	mov ar.pfs = loc3
203	;;
204
205	cmp.ne p6, p0 = r0, r16
206(p6)	br.cond.sptk.few .loop
207	br.ret.sptk.many rp
208	.endp __do_global_dtors_aux
209
210	.align	32
211	.proc	__do_jv_register_classes
212__do_jv_register_classes:
213	.prologue
214	.save ar.pfs, r33
215	alloc loc1 = ar.pfs, 0, 3, 1, 0
216	movl out0 = @gprel(__JCR_LIST__)
217	;;
218
219	addl r14 = @ltoff(@fptr(_Jv_RegisterClasses)), gp
220	add out0 = out0, gp
221	.save rp, loc0
222	mov loc0 = rp
223	.body
224	;;
225
226	ld8 r14 = [r14]
227	ld8 r15 = [out0]
228	cmp.ne p6, p0 = r0, r0
229	;;
230
231	cmp.eq.or p6, p0 = r0, r14
232	cmp.eq.or p6, p0 = r0, r15
233(p6)	br.ret.sptk.many rp
234
235	ld8 r15 = [r14], 8
236	;;
237	nop 0
238	mov b6 = r15
239
240	mov loc2 = gp
241	ld8 gp = [r14]
242	br.call.sptk.many rp = b6
243	;;
244
245	mov gp = loc2
246	mov rp = loc0
247	mov ar.pfs = loc1
248
249	nop 0
250	nop 0
251	br.ret.sptk.many rp
252	.endp	__do_jv_register_classes
253
254#ifdef SHARED
255.weak __cxa_finalize
256#endif
257.weak _Jv_RegisterClasses
258