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Ensure that correct flags are set on known PE section types.

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This commit is contained in:
Nick Clifton
2003-12-15 11:50:11 +00:00
parent 1ea5b9f8d1
commit 25c80428af
2 changed files with 56 additions and 14 deletions
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6
bfd/ChangeLog
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@ -1,3 +1,9 @@
2003-12-15 Dmitry Semyonov <Dmitry.Semyonov@oktet.ru>
Nick Clifton <nickc@redhat.com>
* peXXigen.c (_bfd_XXi_swap_scnhdr_out): Ensure that correct flags
are set on known section types.
2003-12-12 Nick Clifton <nickc@redhat.com> 2003-12-12 Nick Clifton <nickc@redhat.com>
* po/ro.po: Updated translation. * po/ro.po: Updated translation.

64
bfd/peXXigen.c
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@ -943,23 +943,59 @@ _bfd_XXi_swap_scnhdr_out (abfd, in, out)
PUT_SCNHDR_LNNOPTR (abfd, scnhdr_int->s_lnnoptr, PUT_SCNHDR_LNNOPTR (abfd, scnhdr_int->s_lnnoptr,
scnhdr_ext->s_lnnoptr); scnhdr_ext->s_lnnoptr);
/* Extra flags must be set when dealing with NT. All sections should also
have the IMAGE_SCN_MEM_READ (0x40000000) flag set. In addition, the
.text section must have IMAGE_SCN_MEM_EXECUTE (0x20000000) and the data
sections (.idata, .data, .bss, .CRT) must have IMAGE_SCN_MEM_WRITE set
(this is especially important when dealing with the .idata section since
the addresses for routines from .dlls must be overwritten). If .reloc
section data is ever generated, we must add IMAGE_SCN_MEM_DISCARDABLE
(0x02000000). Also, the resource data should also be read and
writable. */
/* FIXME: alignment is also encoded in this field, at least on ppc (krk) */
/* FIXME: even worse, I don't see how to get the original alignment field*/
/* back... */
{ {
/* Extra flags must be set when dealing with PE. All sections should also
have the IMAGE_SCN_MEM_READ (0x40000000) flag set. In addition, the
.text section must have IMAGE_SCN_MEM_EXECUTE (0x20000000) and the data
sections (.idata, .data, .bss, .CRT) must have IMAGE_SCN_MEM_WRITE set
(this is especially important when dealing with the .idata section since
the addresses for routines from .dlls must be overwritten). If .reloc
section data is ever generated, we must add IMAGE_SCN_MEM_DISCARDABLE
(0x02000000). Also, the resource data should also be read and
writable. */
/* FIXME: Alignment is also encoded in this field, at least on PPC and
ARM-WINCE. Although - how do we get the original alignment field
back ? */
typedef struct
{
const char * section_name;
unsigned long must_have;
}
pe_required_section_flags;
pe_required_section_flags known_sections [] =
{
{ ".arch", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_DISCARDABLE | IMAGE_SCN_ALIGN_8BYTES },
{ ".bss", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_UNINITIALIZED_DATA | IMAGE_SCN_MEM_WRITE },
{ ".data", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_WRITE },
{ ".edata", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA },
{ ".idata", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_WRITE },
{ ".pdata", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA },
{ ".rdata", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA },
{ ".reloc", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_DISCARDABLE },
{ ".rsrc", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_WRITE },
{ ".text" , IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_CODE | IMAGE_SCN_MEM_EXECUTE },
{ ".tls", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_WRITE },
{ ".xdata", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA },
{ NULL, 0}
};
pe_required_section_flags * p;
int flags = scnhdr_int->s_flags; int flags = scnhdr_int->s_flags;
for (p = known_sections; p->section_name; p++)
if (strcmp (scnhdr_int->s_name, p->section_name) == 0)
{
/* We have defaulted to adding the IMAGE_SCN_MEM_WRITE flag, but now
we know exactly what this specific section wants so we remove it
and then allow the must_have field to add it back in if necessary. */
flags &= ~IMAGE_SCN_MEM_WRITE;
flags |= p->must_have;
break;
}
H_PUT_32 (abfd, flags, scnhdr_ext->s_flags); H_PUT_32 (abfd, flags, scnhdr_ext->s_flags);
} }