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* elf32-m68hc1x.c (elf32_m68hc11_relocate_section): Added code

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that enables the linker to offset addresses, when linking against
        symbols from the XGATE processor and vice versa.
This commit is contained in:
Nick Clifton 2012-07-24 13:23:41 +00:00
parent 1634dcbe16
commit 082d11223c
2 changed files with 89 additions and 5 deletions
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6
bfd/ChangeLog
View File

@ -1,3 +1,9 @@
2012-07-24 Sean Keys <skeys@ipdatasys.com>
* elf32-m68hc1x.c (elf32_m68hc11_relocate_section): Added code
that enables the linker to offset addresses, when linking against
symbols from the XGATE processor and vice versa.
2012-07-23 Nick Clifton <nickc@redhat.com>
* cisco-core.c (cisco_core_file_failing_command): Make static.

88
bfd/elf32-m68hc1x.c
View File

@ -948,6 +948,8 @@ elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
bfd_vma insn_addr;
bfd_vma insn_page;
bfd_boolean is_far = FALSE;
bfd_boolean is_xgate_symbol = FALSE;
bfd_boolean is_section_symbol = FALSE;
struct elf_link_hash_entry *h;
bfd_vma val;
@ -955,7 +957,7 @@ elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
r_type = ELF32_R_TYPE (rel->r_info);
if (r_type == R_M68HC11_GNU_VTENTRY
|| r_type == R_M68HC11_GNU_VTINHERIT )
|| r_type == R_M68HC11_GNU_VTINHERIT)
continue;
(*ebd->elf_info_to_howto_rel) (input_bfd, &arel, rel);
@ -972,6 +974,8 @@ elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
+ sec->output_offset
+ sym->st_value);
is_far = (sym && (sym->st_other & STO_M68HC12_FAR));
is_xgate_symbol = (sym && (sym->st_target_internal));
is_section_symbol = ELF_ST_TYPE (sym->st_info) & STT_SECTION;
}
else
{
@ -983,6 +987,7 @@ elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
warned);
is_far = (h && (h->other & STO_M68HC12_FAR));
is_xgate_symbol = (h && (h->target_internal));
}
if (sec != NULL && discarded_section (sec))
@ -1122,12 +1127,45 @@ elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
insn_page = m68hc11_phys_page (pinfo, insn_addr);
/* If we are linking an S12 instruction against an XGATE symbol, we
need to change the offset of the symbol value so that it's correct
from the S12's perspective. */
if (is_xgate_symbol)
{
/* The ram in the global space is mapped to 0x2000 in the 16-bit
address space for S12 and 0xE000 in the 16-bit address space
for XGATE. */
if (relocation >= 0xE000)
{
/* We offset the address by the difference
between these two mappings. */
relocation -= 0xC000;
break;
}
else
{
const char * msg;
char * buf;
msg = _("XGATE address (%lx) is not within shared RAM"
"(0xE000-0xFFFF), therefore you must manually offset "
"the address, and possibly manage the page, in your "
"code.");
buf = alloca (strlen (msg) + 128);
sprintf (buf, msg, phys_addr);
if (!((*info->callbacks->warning) (info, buf, name, input_bfd,
input_section, insn_addr)))
return FALSE;
break;
}
}
if (m68hc11_addr_is_banked (pinfo, relocation + rel->r_addend)
&& m68hc11_addr_is_banked (pinfo, insn_addr)
&& phys_page != insn_page)
{
const char* msg;
char* buf;
const char * msg;
char * buf;
msg = _("banked address [%lx:%04lx] (%lx) is not in the same bank "
"as current banked address [%lx:%04lx] (%lx)");
@ -1143,10 +1181,11 @@ elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
return FALSE;
break;
}
if (phys_page != 0 && insn_page == 0)
{
const char* msg;
char* buf;
const char * msg;
char * buf;
msg = _("reference to a banked address [%lx:%04lx] in the "
"normal address space at %04lx");
@ -1169,6 +1208,45 @@ elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
break;
}
/* If we are linking an XGATE instruction against an S12 symbol, we
need to change the offset of the symbol value so that it's correct
from the XGATE's perspective. */
if (!strcmp (howto->name, "R_XGATE_IMM8_LO")
|| !strcmp (howto->name, "R_XGATE_IMM8_HI"))
{
/* We can only offset S12 addresses that lie within the non-paged
area of RAM. */
if (!is_xgate_symbol && !is_section_symbol)
{
/* The ram in the global space is mapped to 0x2000 and stops at
0x4000 in the 16-bit address space for S12 and 0xE000 in the
16-bit address space for XGATE. */
if (relocation >= 0x2000 && relocation < 0x4000)
/* We offset the address by the difference
between these two mappings. */
relocation += 0xC000;
else
{
const char * msg;
char * buf;
/* Get virtual address of instruction having the relocation. */
insn_addr = input_section->output_section->vma
+ input_section->output_offset + rel->r_offset;
msg = _("S12 address (%lx) is not within shared RAM"
"(0x2000-0x4000), therefore you must manually "
"offset the address in your code");
buf = alloca (strlen (msg) + 128);
sprintf (buf, msg, phys_addr);
if (!((*info->callbacks->warning) (info, buf, name, input_bfd,
input_section, insn_addr)))
return FALSE;
break;
}
}
}
if (r_type != R_M68HC11_NONE)
{
if ((r_type == R_M68HC12_PCREL_9) || (r_type == R_M68HC12_PCREL_10))