Cosmetic changes to bfd_perform_relocation
This commit is contained in:
Steve Chamberlain
parent
3874a23cde
commit
1f4d3c7911
191
bfd/bfd.c
191
bfd/bfd.c
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@ -74,7 +74,10 @@ DEFUN(bfd_nonrepresentable_section,(abfd, name),
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CONST bfd * CONST abfd AND
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CONST char * CONST name)
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{
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printf("bfd error writing file %s, can't represent section name %s\n", abfd->filename, name);
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printf("bfd error writing file %s, format %s can't represent section %s\n",
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abfd->filename,
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abfd->xvec->name,
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name);
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exit(1);
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}
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bfd_error_vector_type bfd_error_vector =
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@ -123,8 +126,8 @@ bfd_ec error_tag;
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void (*bfd_error_trap)() = bfd_default_error_trap;
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void (*bfd_error_nonrepresentabltrap)() = bfd_default_error_trap;
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void
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bfd_perror (message)
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char *message;
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DEFUN(bfd_perror,(message),
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CONST char *message)
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{
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if (bfd_error == system_call_error)
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perror(message); /* must be system error then... */
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@ -765,109 +768,119 @@ bfd *output_bfd;
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}
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if (output_bfd!= (bfd *)NULL && howto->partial_inplace == false) {
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/*
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This is a partial relocation, and we want to apply the relocation
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to the reloc entry rather than the raw data. Modify the reloc
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inplace to reflect what we now know.
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*/
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reloc_entry->addend = relocation ;
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reloc_entry->section = reloc_target_input_section;
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if (reloc_target_input_section != (asection *)NULL) {
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/* If we know the output section we can forget the symbol */
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reloc_entry->sym_ptr_ptr = (asymbol**)NULL;
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if (output_bfd!= (bfd *)NULL) {
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if ( howto->partial_inplace == false) {
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/*
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This is a partial relocation, and we want to apply the relocation
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to the reloc entry rather than the raw data. Modify the reloc
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inplace to reflect what we now know.
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*/
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reloc_entry->addend = relocation ;
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reloc_entry->section = reloc_target_input_section;
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if (reloc_target_input_section != (asection *)NULL) {
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/* If we know the output section we can forget the symbol */
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reloc_entry->sym_ptr_ptr = (asymbol**)NULL;
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}
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reloc_entry->address +=
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input_section->output_offset;
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return flag;
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}
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reloc_entry->address +=
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input_section->output_offset;
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else
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{
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/* This is a partial relocation, but inplace, so modify the
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reloc record a bit
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*/
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}
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}
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else {
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reloc_entry->addend = 0;
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reloc_entry->addend = 0;
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/*
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Either we are relocating all the way, or we don't want to apply
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the relocation to the reloc entry (probably because there isn't
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any room in the output format to describe addends to relocs)
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*/
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relocation >>= howto->rightshift;
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/*
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Either we are relocating all the way, or we don't want to apply
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the relocation to the reloc entry (probably because there isn't
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any room in the output format to describe addends to relocs)
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*/
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relocation >>= howto->rightshift;
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/* Shift everything up to where it's going to be used */
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/* Shift everything up to where it's going to be used */
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relocation <<= howto->bitpos;
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relocation <<= howto->bitpos;
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/* Wait for the day when all have the mask in them */
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/* Wait for the day when all have the mask in them */
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relocation_before = relocation;
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relocation_before = relocation;
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/* What we do:
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i instruction to be left alone
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o offset within instruction
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r relocation offset to apply
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S src mask
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D dst mask
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N ~dst mask
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A part 1
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B part 2
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R result
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Do this:
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i i i i i o o o o o from bfd_get<size>
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and S S S S S to get the size offset we want
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+ r r r r r r r r r r to get the final value to place
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and D D D D D to chop to right size
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-----------------------
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A A A A A
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And this:
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i i i i i o o o o o from bfd_get<size>
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and N N N N N get instruction
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-----------------------
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B B B B B
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And then:
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B B B B B
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or A A A A A
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-----------------------
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R R R R R R R R R R put into bfd_put<size>
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*/
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/* What we do:
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i instruction to be left alone
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o offset within instruction
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r relocation offset to apply
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S src mask
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D dst mask
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N ~dst mask
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A part 1
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B part 2
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R result
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Do this:
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i i i i i o o o o o from bfd_get<size>
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and S S S S S to get the size offset we want
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+ r r r r r r r r r r to get the final value to place
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and D D D D D to chop to right size
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-----------------------
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A A A A A
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And this:
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... i i i i i o o o o o from bfd_get<size>
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and N N N N N get instruction
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-----------------------
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... B B B B B
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And then:
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B B B B B
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or A A A A A
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-----------------------
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R R R R R R R R R R put into bfd_put<size>
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*/
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#define DOIT(x) \
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x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask))
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x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask))
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switch (howto->size)
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{
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case 0:
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{
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char x = bfd_getchar(abfd, (char *)data + addr);
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DOIT(x);
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bfd_putchar(abfd,x, (unsigned char *) data + addr);
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}
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break;
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switch (howto->size)
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{
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case 0:
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{
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char x = bfd_getchar(abfd, (char *)data + addr);
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DOIT(x);
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bfd_putchar(abfd,x, (unsigned char *) data + addr);
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}
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break;
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case 1:
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{
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short x = bfd_getshort(abfd, (bfd_byte *)data + addr);
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DOIT(x);
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bfd_putshort(abfd, x, (unsigned char *)data + addr);
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}
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break;
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case 2:
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{
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long x = bfd_getlong(abfd, (bfd_byte *) data + addr);
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DOIT(x);
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bfd_putlong(abfd,x, (bfd_byte *)data + addr);
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}
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break;
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case 3:
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/* Do nothing */
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break;
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default:
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return bfd_reloc_other;
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}
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case 1:
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{
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short x = bfd_getshort(abfd, (bfd_byte *)data + addr);
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DOIT(x);
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bfd_putshort(abfd, x, (unsigned char *)data + addr);
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}
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break;
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case 2:
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{
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long x = bfd_getlong(abfd, (bfd_byte *) data + addr);
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DOIT(x);
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bfd_putlong(abfd,x, (bfd_byte *)data + addr);
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}
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break;
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case 3:
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/* Do nothing */
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break;
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default:
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return bfd_reloc_other;
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}
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}
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return flag;
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}
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