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authorSteve Chamberlain <sac@cygnus>1992-10-23 17:34:37 +0000
committerSteve Chamberlain <sac@cygnus>1992-10-23 17:34:37 +0000
commitc26d7d179ce415260e46eba69629d220a439b79c (patch)
tree458d1284ad43e10832c91f6e6fbe452afc9532de /bfd/reloc.c
parentb26059aa449b61de921a90e76e8efcd75dd772a6 (diff)
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Fri Oct 23 10:32:36 1992 Steve Chamberlain (sac@thepub.cygnus.com)
* seclet.c (rel): don't load sections without the SEC_LOAD bit. Thu Oct 15 10:16:35 1992 Steve Chamberlain (sac@thepub.cygnus.com) * coff-m68k.c (m68k_howto2type, SELECT_RELOC): new function to work out a coff relocation type from a howto's attributes rather than using the input r_type field. This fixes PR1677 and allows conversion of a.out relocs to coff relocs. * coffcode.h (coff_write_relocs): if supplied a relocation relative to an absolute symbol, use the right symbol index. * reloc.c (bfd_perform_relocation): do a partial link for coff relocs right.
Diffstat (limited to 'bfd/reloc.c')
-rw-r--r--bfd/reloc.c52
1 files changed, 38 insertions, 14 deletions
diff --git a/bfd/reloc.c b/bfd/reloc.c
index 6380158..6f59116 100644
--- a/bfd/reloc.c
+++ b/bfd/reloc.c
@@ -45,7 +45,8 @@ SECTION
#include "sysdep.h"
#include "libbfd.h"
#include "seclet.h"
-/*doc*
+/*
+DOCDD
INODE
typedef arelent, howto manager, Relocations, Relocations
@@ -131,10 +132,13 @@ DESCRIPTION
will be relative to this point - for example, a relocation
type which modifies the bottom two bytes of a four byte word
would not touch the first byte pointed to in a big endian
- world. @item addend The addend is a value provided by the back
- end to be added (!) to the relocation offset. Its
- interpretation is dependent upon the howto. For example, on
- the 68k the code:
+ world.
+
+ o addend
+
+ The addend is a value provided by the back end to be added (!)
+ to the relocation offset. Its interpretation is dependent upon
+ the howto. For example, on the 68k the code:
| char foo[];
@@ -264,8 +268,9 @@ CODE_FRAGMENT
. unsigned int rightshift;
.
. {* The size of the item to be relocated - 0, is one byte, 1 is 2
-. bytes, 3 is four bytes. *}
-. unsigned int size;
+. bytes, 3 is four bytes. A -ve value indicates that the
+. result is to be subtracted from the data*}
+. int size;
.
. {* Now obsolete *}
. unsigned int bitsize;
@@ -521,8 +526,10 @@ DEFUN(bfd_perform_relocation,(abfd,
}
- if (output_bfd!= (bfd *)NULL) {
- if ( howto->partial_inplace == false) {
+ if (output_bfd!= (bfd *)NULL)
+ {
+ if ( howto->partial_inplace == false)
+ {
/*
This is a partial relocation, and we want to apply the relocation
to the reloc entry rather than the raw data. Modify the reloc
@@ -540,20 +547,26 @@ DEFUN(bfd_perform_relocation,(abfd,
If we've relocated with a symbol with a section, change
into a ref to the section belonging to the symbol
*/
- reloc_entry->addend = relocation ;
- reloc_entry->address += input_section->output_offset;
+ reloc_entry->address += input_section->output_offset;
+ if (abfd->xvec->flavour == bfd_target_coff_flavour)
+ {
+ relocation -= reloc_entry->addend;
+ reloc_entry->addend = 0;
+ }
+ else
+ {
+ reloc_entry->addend = relocation ;
+ }
}
}
else
{
-
reloc_entry->addend = 0;
}
-
/*
Either we are relocating all the way, or we don't want to apply
the relocation to the reloc entry (probably because there isn't
@@ -625,6 +638,15 @@ DEFUN(bfd_perform_relocation,(abfd,
bfd_put_32(abfd,x, (bfd_byte *)data + addr);
}
break;
+ case -2:
+ {
+ long x = bfd_get_32(abfd, (bfd_byte *) data + addr);
+ relocation = -relocation;
+ DOIT(x);
+ bfd_put_32(abfd,x, (bfd_byte *)data + addr);
+ }
+ break;
+
case 3:
/* Do nothing */
@@ -639,6 +661,7 @@ DEFUN(bfd_perform_relocation,(abfd,
/*
+DOCDD
INODE
howto manager, , typedef arelent, Relocations
@@ -661,6 +684,7 @@ DESCRIPTION
CODE_FRAGMENT
.
.typedef enum bfd_reloc_code_real
+.
.{
. {* 16 bits wide, simple reloc *}
. BFD_RELOC_16,
@@ -792,7 +816,7 @@ DEFUN(bfd_default_reloc_type_lookup,(arch, code),
default:
BFD_FAIL();
}
-return (struct reloc_howto_struct *)NULL;
+return (CONST struct reloc_howto_struct *)NULL;
}