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mmo.c: Fix ld testsuite regression "objcopy executable (pr25662)". 

* mmo.c (mmo_scan): Create .text section only when needed, not
	from the start.

For the test-case at hand, the .data section is created and output
first by the linker, but the mmo input-reader mmo_scan always creates
a .text section.  Since sections are output in the order in which
they're created, it's output first, breaking the assumption that
obcopy without options (or with -p) creates output identical to its
input.  The point of creating it at the top of mmo_scan is a trivial
default assignment for the current section variable "sec".  Instead we
now defer the default, creating it only when needed and sec is NULL.
This commit is contained in:
Hans-Peter Nilsson 2020-04-01 04:03:46 +02:00
parent 283b7aa134
commit 7b948a2580
2 changed files with 10 additions and 1 deletions
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5
bfd/ChangeLog
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@ -1,3 +1,8 @@
2020-04-01 Hans-Peter Nilsson <hp@bitrange.com>
* mmo.c (mmo_scan): Create .text section only when needed, not
from the start.
2020-03-31 Alan Modra <amodra@gmail.com>
* coff-alpha.c (alpha_ecoff_get_elt_at_filepos): Correct bfd_bread

6
bfd/mmo.c
View File

@ -1588,7 +1588,7 @@ mmo_scan (bfd *abfd)
unsigned int lineno = 1;
bfd_boolean error = FALSE;
bfd_vma vma = 0;
asection *sec = bfd_make_section_old_way (abfd, MMO_TEXT_SECTION_NAME);
asection *sec = NULL;
asection *non_spec_sec = NULL;
bfd_vma non_spec_vma = 0;
bfd_size_type nbytes_read = 0;
@ -1646,6 +1646,8 @@ mmo_scan (bfd *abfd)
goto error_return;
vma &= ~3;
if (sec == NULL)
sec = bfd_make_section_old_way (abfd, MMO_TEXT_SECTION_NAME);
mmo_xore_32 (sec, vma, bfd_get_32 (abfd, buf));
vma += 4;
lineno++;
@ -2038,6 +2040,8 @@ mmo_scan (bfd *abfd)
else
{
/* This wasn't a lopcode, so store it in the current section. */
if (sec == NULL)
sec = bfd_make_section_old_way (abfd, MMO_TEXT_SECTION_NAME);
mmo_xore_32 (sec, vma & ~3, bfd_get_32 (abfd, buf));
vma += 4;
vma &= ~3;