diff options
Diffstat (limited to 'bfd/elf32-m68hc1x.c')
| -rw-r--r-- | bfd/elf32-m68hc1x.c | 60 |
1 files changed, 58 insertions, 2 deletions
diff --git a/bfd/elf32-m68hc1x.c b/bfd/elf32-m68hc1x.c index f5762a4..70bf09e 100644 --- a/bfd/elf32-m68hc1x.c +++ b/bfd/elf32-m68hc1x.c @@ -949,6 +949,7 @@ elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, bfd_vma insn_page; bfd_boolean is_far = FALSE; struct elf_link_hash_entry *h; + bfd_vma val; r_symndx = ELF32_R_SYM (rel->r_info); r_type = ELF32_R_TYPE (rel->r_info); @@ -1029,6 +1030,50 @@ elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, phys_page = m68hc11_phys_page (pinfo, relocation + rel->r_addend); switch (r_type) { + case R_M68HC12_LO8XG: + /* This relocation is specific to XGATE IMM16 calls and will precede + a HI8. tc-m68hc11 only generates them in pairs. + Leave the relocation to the HI8XG step. */ + r = bfd_reloc_ok; + r_type = R_M68HC11_NONE; + break; + + case R_M68HC12_HI8XG: + /* This relocation is specific to XGATE IMM16 calls and must follow + a LO8XG. Does not actually check that it was a LO8XG. + Adjusts high and low bytes. */ + relocation = phys_addr; + if ((elf_elfheader (input_bfd)->e_flags & E_M68HC11_XGATE_RAMOFFSET) + && (relocation >= 0x2000)) + relocation += 0xc000; /* HARDCODED RAM offset for XGATE. */ + + /* Fetch 16 bit value including low byte in previous insn. */ + val = (bfd_get_8 (input_bfd, (bfd_byte*) contents + rel->r_offset) << 8) + | bfd_get_8 (input_bfd, (bfd_byte*) contents + rel->r_offset - 2); + + /* Add on value to preserve carry, then write zero to high byte. */ + relocation += val; + + /* Write out top byte. */ + bfd_put_8 (input_bfd, (relocation >> 8) & 0xff, + (bfd_byte*) contents + rel->r_offset); + + /* Write out low byte to previous instruction. */ + bfd_put_8 (input_bfd, relocation & 0xff, + (bfd_byte*) contents + rel->r_offset - 2); + + /* Mark as relocation completed. */ + r = bfd_reloc_ok; + r_type = R_M68HC11_NONE; + break; + + /* The HI8 and LO8 relocs are generated by %hi(expr) %lo(expr) + assembler directives. %hi does not support carry. */ + case R_M68HC11_HI8: + case R_M68HC11_LO8: + relocation = phys_addr; + break; + case R_M68HC11_24: /* Reloc used by 68HC12 call instruction. */ bfd_put_16 (input_bfd, phys_addr, @@ -1123,10 +1168,18 @@ elf32_m68hc11_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, relocation = phys_addr; break; } + if (r_type != R_M68HC11_NONE) - r = _bfd_final_link_relocate (howto, input_bfd, input_section, + { + if ((r_type == R_M68HC12_PCREL_9) || (r_type == R_M68HC12_PCREL_10)) + r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, rel->r_offset, - relocation, rel->r_addend); + relocation - 2, rel->r_addend); + else + r = _bfd_final_link_relocate (howto, input_bfd, input_section, + contents, rel->r_offset, + relocation, rel->r_addend); + } if (r != bfd_reloc_ok) { @@ -1317,6 +1370,9 @@ _bfd_m68hc11_elf_print_private_bfd_data (bfd *abfd, void *ptr) else fprintf (file, _(" [memory=flat]")); + if (elf_elfheader (abfd)->e_flags & E_M68HC11_XGATE_RAMOFFSET) + fprintf (file, _(" [XGATE RAM offsetting]")); + fputc ('\n', file); return TRUE; |