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https://github.com/darlinghq/darling-gdb.git
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b58e918004
* bout.c (bout_swap_exec_header_[in_out]): new field in exec header e_relaxable, major hackery in callbacks * libaout.h : add space for a_relaxable. * seclet.c (rel): don't relax empty sections
131 lines
3.0 KiB
C
131 lines
3.0 KiB
C
/* This module is part of BFD */
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/* The intention is that one day, all the code which uses sections
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will change and use seclets instead - maybe seglet would have been
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a better name..
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Anyway, a seclet contains enough info to be able to describe an
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area of output memory in one go.
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The only description so far catered for is that of the
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<<bfd_indirect_seclet>>, which is a select which points to a
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<<section>> and the <<asymbols>> associated with the section, so
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that relocation can be done when needed.
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One day there will be more types - they will at least migrate from
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the linker's data structures - also there could be extra stuff,
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like a bss seclet, which descibes a lump of memory as containing
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zeros compactly, without the horrible SEC_* flag cruft.
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*/
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "seclet.h"
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#include "coff/internal.h"
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bfd_seclet_type *
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DEFUN(bfd_new_seclet,(abfd, section),
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bfd *abfd AND
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asection *section)
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{
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bfd_seclet_type *n = (bfd_seclet_type *)bfd_alloc(abfd, sizeof(bfd_seclet_type));
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if (section->seclets_tail != (bfd_seclet_type *)NULL) {
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section->seclets_tail->next = n;
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}
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else
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{
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section->seclets_head = n;
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}
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section->seclets_tail = n;
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return n;
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}
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#define MAX_ERRORS_IN_A_ROW 10
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extern bfd_error_vector_type bfd_error_vector;
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void
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DEFUN(rel,(abfd, seclet, output_section),
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bfd *abfd AND
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bfd_seclet_type *seclet AND
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asection *output_section)
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{
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if (output_section->flags & SEC_HAS_CONTENTS
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&& !(output_section->flags & SEC_NEVER_LOAD)
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&& seclet->size)
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{
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bfd_byte *data = (bfd_byte *)alloca(seclet->size);
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data = bfd_get_relocated_section_contents(abfd, seclet, data);
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if(bfd_set_section_contents(abfd,
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output_section,
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data,
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seclet->offset,
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seclet->size) == false)
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{
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abort();
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}
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}
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}
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void
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DEFUN(seclet_dump_seclet,(abfd, seclet, section),
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bfd *abfd AND
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bfd_seclet_type *seclet AND
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asection *section)
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{
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switch (seclet->type)
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{
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case bfd_indirect_seclet:
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/* The contents of this section come from another one somewhere
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else */
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rel(abfd, seclet, section);
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break;
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case bfd_fill_seclet:
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/* Fill in the section with us */
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{
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char *d = malloc(seclet->size);
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unsigned int i;
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for (i =0; i < seclet->size; i+=2) {
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d[i] = seclet->u.fill.value >> 8;
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}
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for (i = 1; i < seclet->size; i+=2) {
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d[i] = seclet->u.fill.value ;
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}
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bfd_set_section_contents(abfd, section, d, seclet->offset, seclet->size);
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}
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break;
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default:
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abort();
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}
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}
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void
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DEFUN(seclet_dump,(abfd),
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bfd *abfd)
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{
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/* Write all the seclets on the bfd out, relocate etc according to the
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rules */
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asection *o = abfd->sections;
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while (o != (asection *)NULL)
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{
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bfd_seclet_type *p = o->seclets_head;
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while (p != (bfd_seclet_type *)NULL)
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{
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seclet_dump_seclet(abfd, p, o);
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p = p ->next;
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}
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o = o->next;
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}
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}
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