Switch arm, earm, powerpc to use crtbegin.c

Use -fpie for crtbegin.
This commit is contained in:
matt 2013-06-27 21:24:39 +00:00
parent c194fe82de
commit 350cb9bc6c
13 changed files with 214 additions and 804 deletions

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@ -1,6 +1,6 @@
# $NetBSD: Makefile.inc,v 1.5 2013/04/29 07:21:59 skrll Exp $
# $NetBSD: Makefile.inc,v 1.6 2013/06/27 21:24:39 matt Exp $
CPPFLAGS+= -DELFSIZE=32
CPPFLAGS+= -I${ARCHDIR}
.if (!empty(CPUFLAGS) && ${CPUFLAGS:M-mabi=aapcs*} != "")
CPPFLAGS+= -DHAVE_INITFINI_ARRAY
.endif

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@ -1,293 +0,0 @@
/* $NetBSD: crtbegin.S,v 1.6 2013/06/24 14:49:13 matt Exp $ */
/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas of 3am Software Foundry.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <arm/asm.h>
RCSID("$NetBSD: crtbegin.S,v 1.6 2013/06/24 14:49:13 matt Exp $")
.section .ctors, "aw", %progbits
.p2align 2
__CTOR_LIST__:
.word -1
.section .dtors, "aw", %progbits
.p2align 2
__DTOR_LIST__:
.word -1
.section .eh_frame, "a", %progbits
.p2align 2
__EH_FRAME_LIST__:
.section .jcr, "aw", %progbits
.p2align 2
__JCR_LIST__:
.section .data.rel, "aw", %progbits
.p2align 2
.type __dso_handle, %object
.size __dso_handle, 4
.globl __dso_handle
.hidden __dso_handle
__dso_handle:
#ifdef SHARED
.word __dso_handle
#else
.word 0
#endif
.local __dwarf_eh_object
.comm __dwarf_eh_object,32
.local __initialized
.comm __initialized,1
.local __finished
.comm __finished,1
.text
/*
* All variables are local to this DSO so we can skip using GOT references
* and instead use PCREL references to access them. We do this regardless
* of being PIC since it isn't any additional overhead to do so.
*
* We don't setup a TOC since all of ours calls are indirect so it isn't
* needed.
*/
.type __do_global_dtors_aux, %function
__do_global_dtors_aux:
GOT_INIT(r3, .Ldtors_got, .Ldtors) /* use r3 temporarily */
ldr r1, .L__finished
#ifdef PIC
ldrb r0, [r1, r3]!
#else
ldrb r0, [r1]
#endif
cmp r0, #0 /* done this already? */
RETc(ne)
mov r0, #1
strb r0, [r1] /* mark it as done */
mov ip, sp
stmfd sp!, {r4, r5, r6, r7, fp, ip, lr, pc}
sub fp, ip, #4
mov r7, r3 /* now that r7 is saved ... */
#ifdef SHARED
GOT_GET(ip, r7, .L__cxa_finalize)
cmp ip, #0
ldrne r2, .L__dso_handle /* GOTOFF */
ldrne r0, [r2, r7] /* load relative to GOT */
#ifdef _ARM_ARCH_4T
blxne ip
#else
movne lr, pc
movne pc, ip
#endif
#endif /* SHARED */
/*
* We know the first entry is -1 so skip it. We use load with
* preincrement to advance the pointer along.
*/
ldr r4, .L__DTOR_LIST__
ldr r5, .L__DTOR_LIST_END__
#ifdef PIC
add r4, r4, r7 /* addr = offset + got */
add r5, r5, r7 /* addr = offset + got */
#endif
add r4, r4, #4 /* skip first entry */
1:
cmp r4, r5 /* end of list */
ldrne ip, [r4], #4 /* ip = *r4++; */
#ifndef SHARED
ldmeqfd sp, {r4, r5, r6, r7, fp, sp, pc} /* restore and return */
#endif
adrne lr, 1b /* set up to return to loop start */
#ifdef _ARM_ARCH_4T
bxne ip /* call it */
#else
movne pc, ip /* call entry */
#endif
#ifdef SHARED
/*
* if (__deregister_frame_info)
* __deregister_frame_info(&__EH_FRAME_LIST__[0]);
*/
GOT_GET(ip, r7, .L__deregister_frame_info)
cmp ip, #0
ldmeqfd sp, {r4-r7, fp, sp, pc} /* restore and return */
ldr r1, .L__EH_FRAME_LIST__
#ifdef PIC
add r0, r1, r7 /* add offset to GOT addr */
#endif
ldmfd sp, {r4-r7, fp, sp, lr} /* restore everthing */
#ifdef _ARM_ARCH_4T
bx ip /* tail call it */
#else
mov pc, ip /* tail call it */
#endif
#endif /* SHARED */
.weak __deregister_frame_info
.weak __cxa_finalize
.hidden _C_LABEL(__DTOR_LIST_END__)
.align 2
GOT_INITSYM(.Ldtors_got, .Ldtors)
#ifdef SHARED
.L__deregister_frame_info:
.word PIC_SYM(_C_LABEL(__deregister_frame_info), GOT)
.L__cxa_finalize:
.word PIC_SYM(_C_LABEL(__cxa_finalize), GOT)
.L__dso_handle:
.word PIC_SYM(_C_LABEL(__dso_handle), GOTOFF)
#endif
.L__finished:
.word PIC_SYM(_C_LABEL(__finished), GOTOFF)
.L__DTOR_LIST__:
.word PIC_SYM(_C_LABEL(__DTOR_LIST__), GOTOFF)
.L__DTOR_LIST_END__:
.word PIC_SYM(_C_LABEL(__DTOR_LIST_END__), GOTOFF)
.L__EH_FRAME_LIST__:
.word PIC_SYM(_C_LABEL(__EH_FRAME_LIST__), GOTOFF)
.weak __register_frame_info
.weak _Jv_RegisterClasses
.type __do_global_ctors_aux, %function
__do_global_ctors_aux:
GOT_INIT(r3, .Lctors_got, .Lctors)
ldr r1, .L__initialized
#ifdef PIC
ldrb r0, [r1, r3]!
#else
ldrb r0, [r1]
#endif
cmp r0, #0 /* done this already? */
RETc(ne)
mov r0, #1
strb r0, [r1] /* mark it as done */
mov ip, sp
stmfd sp!, {r4, r5, r6, r7, fp, ip, lr, pc}
sub fp, ip, #4
mov r7, r3 /* now that r7 is saved ... */
/*
* if (__register_frame_info)
* __register_frame_info(&__EH_FRAME_LIST__[0], &__dwarf_eh_object)
*/
GOT_GET(ip, r7, .L__register_frame_info)
cmp ip, #0
beq 1f
ldr r0, .L__EH_FRAME_LIST__
ldr r1, .L__dwarf_eh_object
#ifdef PIC
add r0, r0, r7 /* object addr = got addr + offset */
add r1, r1, r7 /* object addr = got addr + offset */
#endif
#ifdef _ARM_ARCH_4T
blx ip
#else
mov lr, pc
mov pc, ip
#endif
1:
/*
* if (_Jv_RegisterClasses && __JCR_LIST__[0])
* _Jv_RegisterClasses(&__JCR_LIST__[0]);
*/
GOT_GET(ip, r7, .L_Jv_RegisterClasses)
cmp ip, #0
ldrne r0, .L__JCR_LIST__
#ifdef PIC
ldrne r2, [r0, r7]! /* load 1st one, make r0 point to it */
#else
ldrne r2, [r0] /* load 1st one */
#endif
cmpne r2, #0
#ifdef _ARM_ARCH_4T
blxne ip
#else
movne lr, pc
movne pc, ip
#endif
/*
* Get the start and end of the CTOR list.
*/
ldr r4, .L__CTOR_LIST__
ldr r5, .L__CTOR_LIST_END__
#ifdef PIC
add r4, r4, r7 /* object addr = got addr + offset */
add r5, r5, r7 /* object addr = got addr + offset */
#endif
sub r5, r5, #4 /* ignore first entry */
3:
cmp r4, r5 /* at first entry? */
ldmeqfd sp, {r4-r7, fp, sp, pc} /* then return */
adr lr, 3b /* return to start of loop */
ldr ip, [r5], #-4 /* get entry */
#ifdef _ARM_ARCH_4T
bx ip
#else
mov pc, ip /* get entry */
#endif
.hidden _C_LABEL(__CTOR_LIST_END__)
.align 2
GOT_INITSYM(.Lctors_got, .Lctors)
.L_Jv_RegisterClasses:
.word PIC_SYM(_C_LABEL(_Jv_RegisterClasses), GOT)
.L__register_frame_info:
.word PIC_SYM(_C_LABEL(__register_frame_info), GOT)
.L__initialized:
.word PIC_SYM(_C_LABEL(__initialized), GOTOFF)
.L__CTOR_LIST__:
.word PIC_SYM(_C_LABEL(__CTOR_LIST__), GOTOFF)
.L__CTOR_LIST_END__:
.word PIC_SYM(_C_LABEL(__CTOR_LIST_END__), GOTOFF)
.L__dwarf_eh_object:
.word PIC_SYM(_C_LABEL(__dwarf_eh_object), GOTOFF)
.L__JCR_LIST__:
.word PIC_SYM(_C_LABEL(__JCR_LIST__), GOTOFF)
.section .init, "ax", %progbits
bl __do_global_ctors_aux
.section .fini, "ax", %progbits
bl __do_global_dtors_aux

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/* $NetBSD: crtbegin.h,v 1.1 2013/06/27 21:24:39 matt Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas of 3am Software Foundry.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
__asm(
".pushsection .init, \"ax\", %progbits"
"\n\t" "bl __do_global_ctors_aux"
"\n\t" ".popsection");
__asm(
".pushsection .fini, \"ax\", %progbits"
"\n\t" "bl __do_global_dtors_aux"
"\n\t" ".popsection");

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@ -1,5 +1,5 @@
# $NetBSD: Makefile.inc,v 1.1 2012/08/13 02:49:04 matt Exp $
# $NetBSD: Makefile.inc,v 1.2 2013/06/27 21:24:39 matt Exp $
CPPFLAGS+= -DELFSIZE=32
CPPFLAGS+= -I${ARCHDIR}
CPPFLAGS+= -DHAVE_INITFINI_ARRAY

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@ -1,216 +0,0 @@
/* $NetBSD: crtbegin.S,v 1.4 2013/06/24 20:56:18 matt Exp $ */
/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas of 3am Software Foundry.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <arm/asm.h>
RCSID("$NetBSD: crtbegin.S,v 1.4 2013/06/24 20:56:18 matt Exp $")
.section .eh_frame, "a", %progbits
.p2align 2
__EH_FRAME_LIST__:
.section .jcr, "aw", %progbits
.p2align 2
__JCR_LIST__:
.section .data.rel, "aw", %progbits
.p2align 2
.type __dso_handle, %object
.size __dso_handle, 4
.globl __dso_handle
.hidden __dso_handle
__dso_handle:
#ifdef SHARED
.word __dso_handle
#else
.word 0
#endif
.text
#ifdef SHARED
/*
* If we aren't shared, all we do is set finished
* to 1 if it isn't 1 already. So why bother do that at all?
*/
.type __do_global_dtors_aux, %function
__do_global_dtors_aux:
GOT_INIT(r3, .Ldtors_got, .Ldtors) /* use r3 temporarily */
ldr r1, .L__finished /* GOTOFF */
ldrb r0, [r1, r3]!
cmp r0, #0 /* done this already? */
RETc(ne)
mov r0, #1
strb r0, [r1] /* mark it as done */
GOT_GET(ip, r3, .L__cxa_finalize)
cmp ip, #0
RETc(eq)
ldr r0, .L__dso_handle /* GOTOFF */
ldr r0, [r0, r3] /* load relative to got */
#if defined(_ARM_ARCH_4T)
bx ip /* tail call */
#else
mov pc, ip
#endif
#if 0 /* not used */
/*
* if (__deregister_frame_info)
* __deregister_frame_info(&__EH_FRAME_LIST__[0]);
*/
GOT_GET(ip, r3, .L__deregister_frame_info)
cmp ip, #0
ldmeqfd sp, {r4, r5, fp, sp, pc} /* restore and return */
ldr r1, .L__EH_FRAME_LIST__ /* GOTOFF */
add r1, r1, r4 /* add got addr */
ldmfd sp, {r4, r5, fp, sp, lr} /* restore everthing */
#if !defined(_ARM_ARCH_4T)
bx ip /* tail call it */
#else
mov pc, ip /* tail call it */
#endif
#endif /* notused */
.weak __cxa_finalize
.weak __deregister_frame_info
.align 2
GOT_INITSYM(.Ldtors_got, .Ldtors)
.L__cxa_finalize:
.word PIC_SYM(_C_LABEL(__cxa_finalize), GOT)
#if 0
.L__deregister_frame_info:
.word PIC_SYM(_C_LABEL(__deregister_frame_info), GOT)
#endif
.L__finished:
.word PIC_SYM(_C_LABEL(__finished), GOTOFF)
.L__dso_handle:
.word PIC_SYM(_C_LABEL(__dso_handle), GOTOFF)
.pushsection .fini_array,"aw",%fini_array
.p2align 2
.word __do_global_dtors_aux(target1)
.popsection
#endif /* SHARED */
.local __finished
.comm __finished,1,1
.weak __register_frame_info
.weak _Jv_RegisterClasses
.type __do_global_ctors_aux, %function
__do_global_ctors_aux:
GOT_INIT(r3, .Lctors_got, .Lctors)
ldr r1, .L__initialized /* GOTOFF if PIC */
#ifdef PIC
ldrb r0, [r1, r3]! /* r1 = r1 + got */
#else
ldrb r0, [r1]
#endif
cmp r0, #0 /* done this already? */
RETc(ne)
mov r0, #1
strb r0, [r1] /* mark it as done */
mov ip, sp
stmfd sp!, {r4, r5, fp, ip, lr, pc}
sub fp, ip, #4
mov r4, r3 /* now that r4 is saved ... */
/*
* if (__register_frame_info)
* __register_frame_info(&__EH_FRAME_LIST__[0], &__dwarf_eh_object)
*/
GOT_GET(ip, r4, .L__register_frame_info)
cmp ip, #0
beq 1f
ldr r0, .L__EH_FRAME_LIST__
ldr r1, .L__dwarf_eh_object
#ifdef PIC
add r0, r0, r4
add r1, r1, r4
#endif
#if defined(_ARM_ARCH_4T)
blx ip
#else
mov lr, pc
mov pc, ip
#endif
1:
/*
* if (_Jv_RegisterClasses && __JCR_LIST__[0])
* _Jv_RegisterClasses(&__JCR_LIST__[0]);
*/
GOT_GET(ip, r4, .L_Jv_RegisterClasses)
cmp ip, #0
ldmeqfd sp, {r4, r5, fp, sp, pc} /* return if null */
ldr r0, .L__JCR_LIST__
#ifdef PIC
ldr r2, [r0, r4]! /* GOTOFF + got == address */
#else
ldr r2, [r0]
#endif
cmp r2, #0
ldmfd sp, {r4, r5, fp, sp, lr} /* restore everything */
RETc(eq) /* return if null */
#if defined(_ARM_ARCH_4T)
bx ip /* return or tail call */
#else
mov pc, ip /* return or tail call */
#endif
.p2align 2
GOT_INITSYM(.Lctors_got, .Lctors)
.L__register_frame_info:
.word PIC_SYM(_C_LABEL(__register_frame_info), GOT)
.L_Jv_RegisterClasses:
.word PIC_SYM(_C_LABEL(_Jv_RegisterClasses), GOT)
.L__initialized:
.word PIC_SYM(_C_LABEL(__initialized), GOTOFF)
.L__EH_FRAME_LIST__:
.word PIC_SYM(_C_LABEL(__EH_FRAME_LIST__), GOTOFF)
.L__dwarf_eh_object:
.word PIC_SYM(_C_LABEL(__dwarf_eh_object), GOTOFF)
.L__JCR_LIST__:
.word PIC_SYM(_C_LABEL(__JCR_LIST__), GOTOFF)
.local __initialized
.comm __initialized,1,1
.local __dwarf_eh_object
.comm __dwarf_eh_object,32,4
.section .init_array,"aw",%init_array
.p2align 2
.word __do_global_ctors_aux(target1)

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/* $NetBSD: crtbegin.h,v 1.1 2013/06/27 21:24:39 matt Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas of 3am Software Foundry.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
static void __do_global_ctors_aux(void) __attribute__((__constructor__)) __used;
#ifdef SHARED
static void __do_global_dtors_aux(void) __attribute__((__destructor__)) __used;
#endif
#ifndef SHARED
static const void *find_exidx(void *, int *) __used;
static const void *
find_exidx(void * pc, int * pcount)
{
extern __dso_hidden const char __exidx_start[];
extern __dso_hidden const char __exidx_end[];
*pcount = (__exidx_end - __exidx_start) / 8;
return __exidx_start;
}
__weak_alias(__gnu_Uwind_find_exidx,find_exidx)
#endif /* !SHARED */

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@ -1,5 +1,3 @@
# $NetBSD: Makefile.inc,v 1.1 2011/02/08 02:02:25 matt Exp $
CPPFLAGS+= -DELFSIZE=32
# $NetBSD: Makefile.inc,v 1.2 2013/06/27 21:24:39 matt Exp $
CPPFLAGS+= -I${ARCHDIR}

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@ -1,268 +0,0 @@
/* $NetBSD: crtbegin.S,v 1.2 2011/07/04 21:55:09 matt Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas of 3am Software Foundry.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <powerpc/asm.h>
RCSID("$NetBSD: crtbegin.S,v 1.2 2011/07/04 21:55:09 matt Exp $")
.section .ctors, "aw", @progbits
.p2align 2
__CTOR_LIST__:
.long -1
.section .dtors, "aw", @progbits
.p2align 2
__DTOR_LIST__:
.long -1
.section .eh_frame, "a", @progbits
.p2align 2
__EH_FRAME_LIST__:
.section .jcr, "aw", @progbits
.p2align 2
__JCR_LIST__:
.section ".got2","aw", @progbits
.LCTOC = . + 32768
.section .data.rel, "aw", @progbits
.p2align 2
.type __dso_handle, @object
.size __dso_handle, 4
.globl __dso_handle
.hidden __dso_handle
__dso_handle:
#ifdef SHARED
.long __dso_handle
#else
.long 0
#endif
.lcomm __dwarf_eh_object,8*SZREG,SZREG
.lcomm __initialized,1,1
.lcomm __finished,1,1
.text
.weak __cxa_finalize
.weak __deregister_frame_info
.weak __register_frame_info
.weak _Jv_RegisterClasses
/*
* All variables are local to this DSO so we can skip using GOT references
* and instead use PCREL references to access them. We do this regardless
* of being PIC since it isn't any additional overhead to do so.
*
* We don't setup a TOC since all of ours calls are indirect so it isn't
* needed.
*/
__do_global_dtors_aux:
mflr %r7 /* save return address */
bcl 20,31,1f /* find out what address */
1: mflr %r3 /* we are at */
mtlr %r7 /* restore return address */
addis %r4,%r3,__finished-1b@ha /* PCREL ref (upper) */
lbzu %r0,__finished-1b@l(%r4) /* PCREL ref (lower) & load */
cmpwi %r0,0 /* done this already? */
bnelr /* yep, return */
li %r0, 1
stb %r0, 0(%r4) /* remember we've done this */
stw %r7,(1*SZREG)(%r1) /* save LR */
stwu %r1,-(8*SZREG)(%r1) /* alloc our stack frame */
stw %r31,(7*SZREG)(%r1) /* save some registers */
stw %r30,(6*SZREG)(%r1)
stw %r29,(5*SZREG)(%r1)
stw %r28,(4*SZREG)(%r1)
mr %r29,%r3 /* move this to a safe place */
/*
* Get a reference to our TOC.
*/
addis %r30,%r29,.LCTOC-1b@ha
addi %r30,%r30,.LCTOC-1b@l
/*
* Get a reference to the GOT.
*/
addis %r31,%r29,_GLOBAL_OFFSET_TABLE_-1b@ha /* pcrel (hi) */
addi %r31,%r31,_GLOBAL_OFFSET_TABLE_-1b@l /* pcrel (lo) */
#ifdef SHARED
/*
* if (__cxa_finalize)
* __cxa_finalize(&__dso_handle);
*/
lwz %r0, __cxa_finalize@got(%r31)
cmpwi %r0, 0
beq 2f
addis %r3,%r29,__dso_handle-1b@ha /* get &__dso_handle (pcrel) */
addi %r3,%r3,__dso_handle-1b@l
mtctr %r0 /* setup for indirect branch */
bctrl /* and call the routine */
2:
#endif
addis %r28,%r29,__DTOR_LIST__-1b@ha /* get &__DTOR_LIST__ */
addi %r28,%r28,__DTOR_LIST__-1b@l
/*
* We know the first entry is -1 so skip it. We use load with update
* to advance the pointer along.
*/
3:
lwzu %r0, 4(%r28) /* get entry */
cmpwi %r0, 0 /* end of list? */
beq 4f /* yep. */
mtctr %r0 /* setup for indirect branch */
bctrl /* and call the routine */
b 3b /* do it again */
4:
/*
* if (__deregister_frame_info)
* __deregister_frame_info(&__EH_FRAME_LIST__[0]);
*/
lwz %r0,__deregister_frame_info@got(%r31)
cmpwi %r0, 0 /* routine actually exist? */
beq 5f /* nope, skip call */
addis %r3,%r29,__EH_FRAME_LIST__-1b@ha
addi %r3,%r3,__EH_FRAME_LIST__-1b@l
mtctr %r0 /* setup for indirect branch */
bctrl /* and call the routine */
5:
lwz %r28,(4*SZREG)(%r1) /* restore registers */
lwz %r29,(5*SZREG)(%r1)
lwz %r30,(6*SZREG)(%r1)
lwz %r31,(7*SZREG)(%r1)
addi %r1,%r1,8*SZREG /* adjust stack */
lwz %r0,(1*SZREG)(%r1) /* get return addr */
mtlr %r0
blr /* and return */
__do_global_ctors_aux:
mflr %r7 /* save return address */
bcl 20,31,1f /* find out what address */
1: mflr %r3 /* we are at */
mtlr %r7 /* restore return address */
addis %r4,%r3,__initialized-1b@ha /* pcrel (hi) */
lbzu %r0,__initialized-1b@l(%r4) /* pcrel (lo) load+update */
cmpwi %r0,0 /* have we already done this? */
bnelr /* yep, return */
li %r0,1
stb %r0,0(%r4) /* remember we've been here */
stw %r7,(1*SZREG)(%r1) /* save LR */
stwu %r1,-(8*SZREG)(%r1) /* alloc our stack frame */
stw %r31,(7*SZREG)(%r1) /* save some registers */
stw %r30,(6*SZREG)(%r1)
stw %r29,(5*SZREG)(%r1)
stw %r28,(4*SZREG)(%r1)
mr %r29,%r3 /* move this to a safe place */
/*
* Get a reference to our TOC.
*/
addis %r30,%r29,.LCTOC-1b@ha
addi %r30,%r30,.LCTOC-1b@l
/*
* Get a reference to the GOT.
*/
addis %r31,%r29,_GLOBAL_OFFSET_TABLE_-1b@ha /* pcrel (hi) */
addi %r31,%r31,_GLOBAL_OFFSET_TABLE_-1b@l /* pcrel (lo) */
/*
* if (__register_frame_info)
* __register_frame_info(&__EH_FRAME_LIST__[0], &__dwarf_eh_object)
*/
lwz %r0, __register_frame_info@got(%r31)
cmpwi %r0, 0
beq 2f
addis %r3,%r29,__EH_FRAME_LIST__-1b@ha /* pcrel (hi) */
addi %r3,%r3,__EH_FRAME_LIST__-1b@l /* pcrel (lo) */
addis %r4,%r29,__dwarf_eh_object-1b@ha /* pcrel (hi) */
addi %r4,%r4,__dwarf_eh_object-1b@l /* pcrel (lo) */
mtctr %r0 /* setup for indirect branch */
bctrl /* and call the routine */
2:
/*
* if (_Jv_RegisterClasses && __JCR_LIST__[0])
* _Jv_RegisterClasses(&__JCR_LIST__[0]);
*/
lwz %r0, _Jv_RegisterClasses@got(%r31)
cmpwi %r0, 0
beq 3f
mtctr %r0 /* setup for indirect branch */
addis %r3, %r29, __JCR_LIST__-1b@ha /* pcrel (hi) */
addi %r3, %r3, __JCR_LIST__-1b@l /* pcrel (lo) */
lwz %r4, 0(%r3) /* load first entry */
cmpwi %r4, 0 /* is the list empty? */
bnectrl /* call the routine if not */
3:
/*
* Get end of list of CTOR list.
*/
addis %r28,%r29,__CTOR_LIST_END__-1b@ha
addi %r28,%r28,__CTOR_LIST_END__-1b@l
4:
lwzu %r0, -4(%r28) /* get entry */
cmpwi %r0, -1 /* first entry? */
beq 5f /* yes, we're done */
mtctr %r0 /* setup for indirect branch */
bctrl /* call the routine */
b 4b /* do it again */
5:
lwz %r28,(4*SZREG)(%r1) /* restore registers */
lwz %r29,(5*SZREG)(%r1)
lwz %r30,(6*SZREG)(%r1)
lwz %r31,(7*SZREG)(%r1)
addi %r1,%r1,8*SZREG /* adjust stack */
lwz %r0,(1*SZREG)(%r1) /* get return addr */
mtlr %r0
blr /* and return */
.section .init, "ax", @progbits
bl __do_global_ctors_aux
.section .fini, "ax", @progbits
bl __do_global_dtors_aux

View File

@ -0,0 +1,36 @@
/* $NetBSD: crtbegin.h,v 1.1 2013/06/27 21:24:39 matt Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas of 3am Software Foundry.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
__asm( ".pushsection .init, \"ax\", @progbits"
"\n\t" "bl __do_global_ctors_aux"
"\n\t" ".popsection");
__asm( ".pushsection .fini, \"ax\", @progbits"
"\n\t" "bl __do_global_dtors_aux"
"\n\t" ".popsection");

View File

@ -1,4 +1,4 @@
/* $NetBSD: crtend.S,v 1.1 2011/02/08 02:02:25 matt Exp $ */
/* $NetBSD: crtend.S,v 1.2 2013/06/27 21:24:39 matt Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
* All rights reserved.
@ -30,7 +30,7 @@
#include <powerpc/asm.h>
RCSID("$NetBSD: crtend.S,v 1.1 2011/02/08 02:02:25 matt Exp $")
RCSID("$NetBSD: crtend.S,v 1.2 2013/06/27 21:24:39 matt Exp $")
.section .ctors, "aw", @progbits
.p2align 2
@ -41,6 +41,9 @@ __CTOR_LIST_END__:
.section .dtors, "aw", @progbits
.p2align 2
.global __DTOR_LIST_END__
.hidden __DTOR_LIST_END__
__DTOR_LIST_END__:
.long 0
.section .eh_frame, "a", @progbits

View File

@ -0,0 +1,36 @@
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas of 3am Software Foundry.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
__asm( ".pushsection .init, \"ax\", @progbits" "\n\t"
"calls $0, __do_global_ctors_aux" "\n\t"
".popsection" "\n\t"
".pushsection .fini, \"ax\", @progbits" "\n\t"
"calls $0, __do_global_dtors_aux" "\n\t"
".popsection"
);

View File

@ -1,4 +1,4 @@
# $NetBSD: Makefile.inc,v 1.11 2013/06/27 03:37:21 matt Exp $
# $NetBSD: Makefile.inc,v 1.12 2013/06/27 21:24:39 matt Exp $
.include <bsd.own.mk>
@ -19,7 +19,7 @@ crtbegin.o: crtbegin.S
.else
crtbegin.o: crtbegin.c crtbegin.h
${_MKTARGET_COMPILE}
${COMPILE.c} ${COMMON_DIR}/crtbegin.c -o ${.TARGET}.o
${COMPILE.c} -fpie ${COMMON_DIR}/crtbegin.c -o ${.TARGET}.o
.endif
${LD} -x -r -o ${.TARGET} ${.TARGET}.o
rm -f ${.TARGET}.o

View File

@ -27,79 +27,105 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: crtbegin.c,v 1.2 2013/06/24 14:49:13 matt Exp $");
__RCSID("$NetBSD: crtbegin.c,v 1.3 2013/06/27 21:24:39 matt Exp $");
typedef void (*fptr_t)(void);
__dso_hidden const fptr_t __JCR_LIST__[0] __section(".jcr");
__dso_hidden const long __EH_FRAME_LIST__[0] __section(".eh_frame");
__weakref_visible void Jv_RegisterClasses(const fptr_t *)
__weak_reference(_Jv_RegisterClasses);
#if !defined(HAVE_INITFINI_ARRAY)
__dso_hidden const fptr_t __CTOR_LIST__[] __section(".ctors") = {
(fptr_t) -1,
};
__dso_hidden extern const fptr_t __CTOR_LIST_END__[];
__dso_hidden const fptr_t __DTOR_LIST__[] __section(".dtors") = {
(fptr_t) -1,
};
__dso_hidden extern const fptr_t __DTOR_LIST_END__[];
#endif
#ifdef SHARED
__dso_hidden void *__dso_handle = &__dso_handle;
__weakref_visible void cxa_finalize(void *)
__weak_reference(__cxa_finalize);
#else
__dso_hidden void *__dso_handle;
#endif
__weakref_visible void cxa_finalize(void *)
__weak_reference(__cxa_finalize);
__weakref_visible void Jv_RegisterClasses(const fptr_t *)
__weak_reference(_Jv_RegisterClasses);
#if !defined(__ARM_EABI__)
__dso_hidden const long __EH_FRAME_LIST__[0] __section(".eh_frame");
__weakref_visible void register_frame_info(const void *, const void *)
__weak_reference(__register_frame_info);
__weakref_visible void deregister_frame_info(const void *)
__weak_reference(__deregister_frame_info);
static long dwarf_eh_object[8];
static unsigned char __initialized;
static unsigned char __finished;
#endif
static void __do_global_ctors_aux(void) __used;
static void __do_global_dtors_aux(void) __used;
static void
__do_global_ctors_aux(void)
{
static unsigned char __initialized;
if (__initialized)
return;
__initialized = 1;
#if !defined(__ARM_EABI__)
if (register_frame_info)
register_frame_info(__EH_FRAME_LIST__, &dwarf_eh_object);
#endif
if (Jv_RegisterClasses && __JCR_LIST__[0] != 0)
Jv_RegisterClasses(__JCR_LIST__);
#if !defined(HAVE_INITFINI_ARRAY)
for (const fptr_t *p = __CTOR_LIST_END__; p > __CTOR_LIST__ + 1; ) {
(*(*--p))();
}
#endif
}
#if !defined(__ARM_EABI__) || defined(SHARED)
#if !defined(HAVE_INITFINI_ARRAY)
__dso_hidden const fptr_t __DTOR_LIST__[] __section(".dtors") = {
(fptr_t) -1,
};
__dso_hidden extern const fptr_t __DTOR_LIST_END__[];
#endif
static void __do_global_dtors_aux(void) __used;
static void
__do_global_dtors_aux(void)
{
static unsigned char __finished;
if (__finished)
return;
__finished = 1;
#ifdef SHARED
if (cxa_finalize)
cxa_finalize(__dso_handle);
(*cxa_finalize)(__dso_handle);
#endif
#if !defined(HAVE_INITFINI_ARRAY)
for (const fptr_t *p = __DTOR_LIST__ + 1; p < __DTOR_LIST_END__; ) {
(*(*p++))();
}
#endif
#if !defined(__ARM_EABI__)
if (deregister_frame_info)
deregister_frame_info(__EH_FRAME_LIST__);
#endif
}
#endif /* !__ARM_EABI__ || SHARED */
#include "crtbegin.h"