Nuke RTLD_RELOCATE_SELF on ARM.
This commit is contained in:
mycroft
parent
d22977bb61
commit
9f0e145106
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@ -1,10 +1,15 @@
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# $NetBSD: Makefile.inc,v 1.4 2002/09/05 15:38:24 mycroft Exp $
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# $NetBSD: Makefile.inc,v 1.5 2002/09/09 19:28:36 mycroft Exp $
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SRCS+= rtld_start.S mdreloc.c
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# XXX Should not be in CPPFLAGS!
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CPPFLAGS+= -fpic
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CPPFLAGS+= -DELFSIZE=32 -DRTLD_RELOCATE_SELF -DVARPSZ
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CPPFLAGS+= -DELFSIZE=32 -DVARPSZ
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LDFLAGS+= -Bshareable -Bsymbolic -e _rtld_start
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.if (${MACHINE_ARCH} == "arm")
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LDFLAGS+= --script ${.CURDIR}/arch/arm/ld.so.script.le
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.else
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LDFLAGS+= --script ${.CURDIR}/arch/arm/ld.so.script.be
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.endif
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OUTPUT_FORMAT("elf32-bigarm", "elf32-bigarm",
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"elf32-littlearm")
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OUTPUT_ARCH(arm)
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ENTRY(_start)
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|
||||
end of ctors marker and it must be last */
|
||||
KEEP (*(EXCLUDE_FILE (*crtend.o ) .ctors))
|
||||
KEEP (*(SORT(.ctors.*)))
|
||||
KEEP (*(.ctors))
|
||||
}
|
||||
.dtors :
|
||||
{
|
||||
KEEP (*crtbegin.o(.dtors))
|
||||
KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors))
|
||||
KEEP (*(SORT(.dtors.*)))
|
||||
KEEP (*(.dtors))
|
||||
}
|
||||
.got : { *(.got.plt) *(.got) }
|
||||
PROVIDE (_GOT_END_ = .);
|
||||
.sdata2 : { *(.sdata2) *(.sdata2.*) *(.gnu.linkonce.s2.*) }
|
||||
.sbss2 : { *(.sbss2) *(.sbss2.*) *(.gnu.linkonce.sb2.*) }
|
||||
.dynamic : { *(.dynamic) }
|
||||
/* We want the small data sections together, so single-instruction offsets
|
||||
can access them all, and initialized data all before uninitialized, so
|
||||
we can shorten the on-disk segment size. */
|
||||
.sdata :
|
||||
{
|
||||
*(.sdata)
|
||||
*(.sdata.*)
|
||||
*(.gnu.linkonce.s.*)
|
||||
}
|
||||
_edata = .;
|
||||
PROVIDE (edata = .);
|
||||
__bss_start = .;
|
||||
__bss_start__ = .;
|
||||
.sbss :
|
||||
{
|
||||
PROVIDE (__sbss_start = .);
|
||||
PROVIDE (___sbss_start = .);
|
||||
*(.dynsbss)
|
||||
*(.sbss)
|
||||
*(.sbss.*)
|
||||
*(.gnu.linkonce.sb.*)
|
||||
*(.scommon)
|
||||
PROVIDE (__sbss_end = .);
|
||||
PROVIDE (___sbss_end = .);
|
||||
}
|
||||
.bss :
|
||||
{
|
||||
*(.dynbss)
|
||||
*(.bss)
|
||||
*(.bss.*)
|
||||
*(.gnu.linkonce.b.*)
|
||||
*(COMMON)
|
||||
/* Align here to ensure that the .bss section occupies space up to
|
||||
_end. Align after .bss to ensure correct alignment even if the
|
||||
.bss section disappears because there are no input sections. */
|
||||
. = ALIGN(8);
|
||||
}
|
||||
. = ALIGN(8);
|
||||
_end = .;
|
||||
_bss_end__ = . ; __bss_end__ = . ; __end__ = . ;
|
||||
PROVIDE (end = .);
|
||||
/* Stabs debugging sections. */
|
||||
.stab 0 : { *(.stab) }
|
||||
.stabstr 0 : { *(.stabstr) }
|
||||
.stab.excl 0 : { *(.stab.excl) }
|
||||
.stab.exclstr 0 : { *(.stab.exclstr) }
|
||||
.stab.index 0 : { *(.stab.index) }
|
||||
.stab.indexstr 0 : { *(.stab.indexstr) }
|
||||
.comment 0 : { *(.comment) }
|
||||
/* DWARF debug sections.
|
||||
Symbols in the DWARF debugging sections are relative to the beginning
|
||||
of the section so we begin them at 0. */
|
||||
/* DWARF 1 */
|
||||
.debug 0 : { *(.debug) }
|
||||
.line 0 : { *(.line) }
|
||||
/* GNU DWARF 1 extensions */
|
||||
.debug_srcinfo 0 : { *(.debug_srcinfo) }
|
||||
.debug_sfnames 0 : { *(.debug_sfnames) }
|
||||
/* DWARF 1.1 and DWARF 2 */
|
||||
.debug_aranges 0 : { *(.debug_aranges) }
|
||||
.debug_pubnames 0 : { *(.debug_pubnames) }
|
||||
/* DWARF 2 */
|
||||
.debug_info 0 : { *(.debug_info) *(.gnu.linkonce.wi.*) }
|
||||
.debug_abbrev 0 : { *(.debug_abbrev) }
|
||||
.debug_line 0 : { *(.debug_line) }
|
||||
.debug_frame 0 : { *(.debug_frame) }
|
||||
.debug_str 0 : { *(.debug_str) }
|
||||
.debug_loc 0 : { *(.debug_loc) }
|
||||
.debug_macinfo 0 : { *(.debug_macinfo) }
|
||||
/* SGI/MIPS DWARF 2 extensions */
|
||||
.debug_weaknames 0 : { *(.debug_weaknames) }
|
||||
.debug_funcnames 0 : { *(.debug_funcnames) }
|
||||
.debug_typenames 0 : { *(.debug_typenames) }
|
||||
.debug_varnames 0 : { *(.debug_varnames) }
|
||||
/* These must appear regardless of . */
|
||||
}
|
||||
|
|
@ -89,10 +89,22 @@ _rtld_relocate_nonplt_objects(obj, self, dodebug)
|
|||
break;
|
||||
|
||||
case R_TYPE(RELATIVE): /* word32 B + A */
|
||||
*where += (Elf_Addr)obj->relocbase;
|
||||
rdbg(dodebug, ("RELATIVE in %s --> %p @ %p", obj->path,
|
||||
(void *)*where, where));
|
||||
{
|
||||
extern Elf_Addr _GLOBAL_OFFSET_TABLE_[];
|
||||
extern Elf_Addr _GOT_END_[];
|
||||
|
||||
/* This is the ...iffy hueristic. */
|
||||
if (!self ||
|
||||
(caddr_t)where < (caddr_t)_GLOBAL_OFFSET_TABLE_ ||
|
||||
(caddr_t)where >= (caddr_t)_GOT_END_) {
|
||||
*where += (Elf_Addr)obj->relocbase;
|
||||
rdbg(dodebug, ("RELATIVE in %s --> %p",
|
||||
obj->path, (void *)*where));
|
||||
} else
|
||||
rdbg(dodebug, ("RELATIVE in %s stays at %p",
|
||||
obj->path, (void *)*where));
|
||||
break;
|
||||
}
|
||||
|
||||
case R_TYPE(COPY):
|
||||
/*
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: rtld_start.S,v 1.3 2001/07/15 23:19:59 matt Exp $ */
|
||||
/* $NetBSD: rtld_start.S,v 1.4 2002/09/09 19:28:40 mycroft Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 1998 The NetBSD Foundation, Inc.
|
||||
|
|
@ -46,6 +46,22 @@ _rtld_start:
|
|||
sub sp, sp, #8 /* make room for obj_main & exit proc */
|
||||
mov r4, r0 /* save ps_strings */
|
||||
|
||||
ldr sl, .L2
|
||||
ldr r1, .L2+4
|
||||
ldr r2, .L2+8
|
||||
.L1:
|
||||
add sl, pc, sl
|
||||
ldr r1, [sl, r1]
|
||||
ldr r2, [sl, r2]
|
||||
sub r1, sl, r1
|
||||
add r2, r1, r2
|
||||
1:
|
||||
ldr r0, [sl]
|
||||
add r0, r1, r0
|
||||
str r0, [sl], #4
|
||||
cmp sl, r2
|
||||
bcc 1b
|
||||
|
||||
mov r0, sp /* arg#1 = sp */
|
||||
bl _rtld /* call the shared loader */
|
||||
mov r3, r0 /* save entry point */
|
||||
|
|
@ -55,6 +71,10 @@ _rtld_start:
|
|||
add sp, sp, #8 /* restore stack */
|
||||
mov r0, r4 /* restore ps_strings */
|
||||
mov pc, r3 /* jump to the entry point */
|
||||
.L2:
|
||||
.word _GLOBAL_OFFSET_TABLE_ - (.L1+8)
|
||||
.word _GLOBAL_OFFSET_TABLE_(GOT)
|
||||
.word _GOT_END_(GOT)
|
||||
|
||||
.align 0
|
||||
.globl _rtld_bind_start
|
||||
|
|
|
|||
Loading…
Reference in New Issue