static long get_symbol_value PARAMS ((asymbol *));
static bfd_reloc_status_type a29k_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static boolean coff_a29k_relocate_section
+ PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
+ struct internal_reloc *, struct internal_syment *, asection **));
+static boolean coff_a29k_adjust_symndx
+ PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
+ struct internal_reloc *, boolean *));
+
+#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
#define INSERT_HWORD(WORD,HWORD) \
(((WORD) & 0xff00ff00) | (((HWORD) & 0xff00) << 8) | ((HWORD)& 0xff))
#define EXTRACT_HWORD(WORD) \
- (((WORD) & 0x00ff0000) >> 8) | ((WORD)& 0xff)
+ ((((WORD) & 0x00ff0000) >> 8) | ((WORD)& 0xff))
#define SIGN_EXTEND_HWORD(HWORD) \
((HWORD) & 0x8000 ? (HWORD)|0xffff0000 : (HWORD))
}
}
+/* The reloc processing routine for the optimized COFF linker. */
+
+static boolean
+coff_a29k_relocate_section (output_bfd, info, input_bfd, input_section,
+ contents, relocs, syms, sections)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ bfd *input_bfd;
+ asection *input_section;
+ bfd_byte *contents;
+ struct internal_reloc *relocs;
+ struct internal_syment *syms;
+ asection **sections;
+{
+ struct internal_reloc *rel;
+ struct internal_reloc *relend;
+ boolean hihalf;
+ bfd_vma hihalf_val;
+
+ /* If we are performing a relocateable link, we don't need to do a
+ thing. The caller will take care of adjusting the reloc
+ addresses and symbol indices. */
+ if (info->relocateable)
+ return true;
+
+ hihalf = false;
+ hihalf_val = 0;
+
+ rel = relocs;
+ relend = rel + input_section->reloc_count;
+ for (; rel < relend; rel++)
+ {
+ long symndx;
+ bfd_byte *loc;
+ struct coff_link_hash_entry *h;
+ struct internal_syment *sym;
+ asection *sec;
+ bfd_vma val;
+ boolean overflow;
+ unsigned long insn;
+ long signed_value;
+ unsigned long unsigned_value;
+ bfd_reloc_status_type rstat;
+
+ symndx = rel->r_symndx;
+ loc = contents + rel->r_vaddr - input_section->vma;
+
+ if (symndx == -1)
+ h = NULL;
+ else
+ h = obj_coff_sym_hashes (input_bfd)[symndx];
+
+ sym = NULL;
+ sec = NULL;
+ val = 0;
+
+ /* An R_IHCONST reloc does not have a symbol. Instead, the
+ symbol index is an addend. R_IHCONST is always used in
+ conjunction with R_IHHALF. */
+ if (rel->r_type != R_IHCONST)
+ {
+ if (h == NULL)
+ {
+ if (symndx == -1)
+ sec = bfd_abs_section_ptr;
+ else
+ {
+ sym = syms + symndx;
+ sec = sections[symndx];
+ val = (sec->output_section->vma
+ + sec->output_offset
+ + sym->n_value
+ - sec->vma);
+ }
+ }
+ else
+ {
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ sec = h->root.u.def.section;
+ val = (h->root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset);
+ }
+ else
+ {
+ if (! ((*info->callbacks->undefined_symbol)
+ (info, h->root.root.string, input_bfd, input_section,
+ rel->r_vaddr - input_section->vma)))
+ return false;
+ }
+ }
+
+ if (hihalf)
+ {
+ if (! ((*info->callbacks->reloc_dangerous)
+ (info, "missing IHCONST reloc", input_bfd,
+ input_section, rel->r_vaddr - input_section->vma)))
+ return false;
+ hihalf = false;
+ }
+ }
+
+ overflow = false;
+
+ switch (rel->r_type)
+ {
+ default:
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+
+ case R_IREL:
+ insn = bfd_get_32 (input_bfd, loc);
+
+ /* Extract the addend. */
+ signed_value = EXTRACT_HWORD (insn);
+ signed_value = SIGN_EXTEND_HWORD (signed_value);
+ signed_value <<= 2;
+
+ /* Determine the destination of the jump. */
+ signed_value += val + rel->r_vaddr - input_section->vma;
+
+ if ((signed_value & ~0x3ffff) == 0)
+ {
+ /* We can use an absolute jump. */
+ insn |= (1 << 24);
+ }
+ else
+ {
+ /* Make the destination PC relative. */
+ signed_value -= (input_section->output_section->vma
+ + input_section->output_offset
+ + (rel->r_vaddr - input_section->vma));
+ if (signed_value > 0x1ffff || signed_value < - 0x20000)
+ {
+ overflow = true;
+ signed_value = 0;
+ }
+ }
+
+ /* Put the adjusted value back into the instruction. */
+ signed_value >>= 2;
+ insn = INSERT_HWORD (insn, signed_value);
+
+ bfd_put_32 (input_bfd, (bfd_vma) insn, loc);
+
+ break;
+
+ case R_ILOHALF:
+ insn = bfd_get_32 (input_bfd, loc);
+ unsigned_value = EXTRACT_HWORD (insn);
+ unsigned_value += val;
+ insn = INSERT_HWORD (insn, unsigned_value);
+ bfd_put_32 (input_bfd, insn, loc);
+ break;
+
+ case R_IHIHALF:
+ /* Save the value for the R_IHCONST reloc. */
+ hihalf = true;
+ hihalf_val = val;
+ break;
+
+ case R_IHCONST:
+ if (! hihalf)
+ {
+ if (! ((*info->callbacks->reloc_dangerous)
+ (info, "missing IHIHALF reloc", input_bfd,
+ input_section, rel->r_vaddr - input_section->vma)))
+ return false;
+ hihalf_val = 0;
+ }
+
+ insn = bfd_get_32 (input_bfd, loc);
+ unsigned_value = rel->r_symndx + hihalf_val;
+ unsigned_value >>= 16;
+ insn = INSERT_HWORD (insn, unsigned_value);
+ bfd_put_32 (input_bfd, (bfd_vma) insn, loc);
+
+ hihalf = false;
+
+ break;
+
+ case R_BYTE:
+ case R_HWORD:
+ case R_WORD:
+ rstat = _bfd_relocate_contents (howto_table + rel->r_type,
+ input_bfd, val, loc);
+ if (rstat == bfd_reloc_overflow)
+ overflow = true;
+ else if (rstat != bfd_reloc_ok)
+ abort ();
+ break;
+ }
+
+ if (overflow)
+ {
+ const char *name;
+ char buf[SYMNMLEN + 1];
+
+ if (symndx == -1)
+ name = "*ABS*";
+ else if (h != NULL)
+ name = h->root.root.string;
+ else if (sym == NULL)
+ name = "*unknown*";
+ else if (sym->_n._n_n._n_zeroes == 0
+ && sym->_n._n_n._n_offset != 0)
+ name = obj_coff_strings (input_bfd) + sym->_n._n_n._n_offset;
+ else
+ {
+ strncpy (buf, sym->_n._n_name, SYMNMLEN);
+ buf[SYMNMLEN] = '\0';
+ name = buf;
+ }
+
+ if (! ((*info->callbacks->reloc_overflow)
+ (info, name, howto_table[rel->r_type].name, (bfd_vma) 0,
+ input_bfd, input_section,
+ rel->r_vaddr - input_section->vma)))
+ return false;
+ }
+ }
+
+ return true;
+}
+
+#define coff_relocate_section coff_a29k_relocate_section
+
+/* We don't want to change the symndx of a R_IHCONST reloc, since it
+ is actually an addend, not a symbol index at all. */
+
+/*ARGSUSED*/
+static boolean
+coff_a29k_adjust_symndx (obfd, info, ibfd, sec, irel, adjustedp)
+ bfd *obfd;
+ struct bfd_link_info *info;
+ bfd *ibfd;
+ asection *sec;
+ struct internal_reloc *irel;
+ boolean *adjustedp;
+{
+ if (irel->r_type == R_IHCONST)
+ *adjustedp = true;
+ else
+ *adjustedp = false;
+ return true;
+}
+
+#define coff_adjust_symndx coff_a29k_adjust_symndx
+
#include "coffcode.h"
const bfd_target a29kcoff_big_vec =