#include "libcoff.h"
+/* The nt loader points the toc register to &toc + 32768, in order to */
+/* use the complete range of a 16-bit displacement (I guess). We have */
+/* to adjust for this when we fix up loads displaced off the toc reg. */
+#define TOC_LOAD_ADJUSTMENT (-32768)
+#define TOC_SECTION_NAME ".private.toc"
+
/* The main body of code is in coffcode.h. */
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
+static boolean in_reloc_p PARAMS((bfd *abfd, reloc_howto_type *howto));
\f
/* FIXME: It'll take a while to get through all of these. I only need a few to
0x00, /* src_mask */
0x00, /* dst_mask */
false), /* pcrel_offset */
-
+
/* IMAGE_REL_PPC_ADDR64 0x0001 64-bit address */
/* Unused: */
HOWTO(IMAGE_REL_PPC_ADDR64, /* type */
- 0, /* rightshift */
- 3, /* size (0 = byte, 1 = short, 2 = long) */
- 64, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- 0, /* special_function */
- "ADDR64", /* name */
- true, /* partial_inplace */
- MINUS_ONE, /* src_mask */
- MINUS_ONE, /* dst_mask */
- false), /* pcrel_offset */
+ 0, /* rightshift */
+ 3, /* size (0 = byte, 1 = short, 2 = long) */
+ 64, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ 0, /* special_function */
+ "ADDR64", /* name */
+ true, /* partial_inplace */
+ MINUS_ONE, /* src_mask */
+ MINUS_ONE, /* dst_mask */
+ false), /* pcrel_offset */
/* IMAGE_REL_PPC_ADDR32 0x0002 32-bit address */
/* Used: */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
-
+
/* IMAGE_REL_PPC_ADDR24 0x0003 26-bit address, shifted left 2 (branch absolute) */
/* the LI field is in bit 6 through bit 29 is 24 bits, + 2 for the shift */
- /* Of course, That's the IBM approved bit numbering, which is not what
+ /* Of course, That's the IBM approved bit numbering, which is not what */
/* anyone else uses.... The li field is in bit 2 thru 25 */
/* Used: */
HOWTO (IMAGE_REL_PPC_ADDR24, /* type */
0x07fffffc, /* src_mask */
0x07fffffc, /* dst_mask */
false), /* pcrel_offset */
-
+
/* IMAGE_REL_PPC_ADDR16 0x0004 16-bit address */
/* Used: */
HOWTO (IMAGE_REL_PPC_ADDR16, /* type */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
-
+
/* IMAGE_REL_PPC_ADDR14 0x0005 */
/* 16-bit address, shifted left 2 (load doubleword) */
/* FIXME: the mask is likely wrong, and the bit position may be as well */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
-
+
/* IMAGE_REL_PPC_REL24 0x0006 */
/* 26-bit PC-relative offset, shifted left 2 (branch relative) */
/* Used: */
0x3fffffc, /* src_mask */
0x3fffffc, /* dst_mask */
false), /* pcrel_offset */
-
+
/* IMAGE_REL_PPC_REL14 0x0007 */
/* 16-bit PC-relative offset, shifted left 2 (br cond relative) */
/* FIXME: the mask is likely wrong, and the bit position may be as well */
0xffff, /* src_mask */
0xffff, /* dst_mask */
true), /* pcrel_offset */
-
+
/* IMAGE_REL_PPC_TOCREL16 0x0008 */
/* 16-bit offset from TOC base */
/* Used: */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
-
+
/* IMAGE_REL_PPC_TOCREL14 0x0009 */
/* 16-bit offset from TOC base, shifted left 2 (load doubleword) */
/* Unused: */
false, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
- true), /* pcrel_offset */
-
+ false), /* pcrel_offset */
+
/* IMAGE_REL_PPC_ADDR32NB 0x000A */
/* 32-bit addr w/ image base */
/* Unused: */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
- ppc_addr32nb_reloc, /* special_function */
+ 0, /* special_function */
"ADDR32NB", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
- true), /* pcrel_offset */
-
+ false), /* pcrel_offset */
+
/* IMAGE_REL_PPC_SECREL 0x000B */
/* va of containing section (as in an image sectionhdr) */
/* Unused: */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
- true), /* pcrel_offset */
+ false), /* pcrel_offset */
/* IMAGE_REL_PPC_IMGLUE 0x000E */
/* symbol is glue code; virtual address is TOC restore instruction */
};
+\f
+
+/* Some really cheezy macros that can be turned on to test stderr :-) */
+
+
+#ifdef DEBUG_RELOC
+#define UN_IMPL(x) \
+{ \
+ static int i; \
+ if (i == 0) \
+ { \
+ i = 1; \
+ fprintf(stderr,"Unimplemented Relocation -- %s\n",x); \
+ } \
+}
+
+#define DUMP_RELOC(n,r) \
+{ \
+ fprintf(stderr,"%s sym %d, addr %d, addend %d\n", \
+ n, (*(r->sym_ptr_ptr))->name, \
+ r->address, r->addend); \
+}
+
+/* Given a reloc name, n, and a pointer to an internal_reloc,
+ dump out interesting information on the contents
+
+#define n_name _n._n_name
+#define n_zeroes _n._n_n._n_zeroes
+#define n_offset _n._n_n._n_offset
+
+*/
+
+#define DUMP_RELOC2(n,r) \
+{ \
+ fprintf(stderr,"%s sym %d, r_vaddr %d\n", \
+ n, r->r_symndx, r->r_vaddr); \
+}
+
+#else
+#define UN_IMPL(x)
+#define DUMP_RELOC(n,r)
+#define DUMP_RELOC2(n,r)
+#endif
+
+
+\f
+/* toc construction and management routines */
+extern bfd* bfd_of_toc_owner;
+extern long int global_toc_size;
+
+extern long int import_table_size;
+extern long int first_thunk_address;
+extern long int thunk_size;
+
+enum toc_type
+{
+ default_toc,
+ toc_32,
+ toc_64
+};
+
+/* record a toc offset against a symbol */
+static int
+ppc_record_toc_entry(abfd, info, sec, sym, toc_kind)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ asection *sec;
+ int sym;
+ enum toc_type toc_kind;
+{
+ bfd_byte *t;
+ bfd_byte *old_contents;
+ asection *s;
+ int element_size;
+ int data;
+ int offset;
+ struct coff_link_hash_entry *h;
+ struct coff_symbol_struct *target;
+ int ret_val;
+ const char *name;
+
+ int *local_syms;
+
+ h = 0;
+
+ h = obj_coff_sym_hashes (abfd)[sym];
+
+ if (h == 0)
+ {
+ local_syms = obj_coff_local_toc_table(abfd);
+ if (local_syms == 0)
+ {
+ int i;
+ /* allocate a table */
+ local_syms =
+ (int *) bfd_zalloc (abfd,
+ obj_raw_syment_count(abfd) * sizeof(int));
+ if (local_syms == 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ obj_coff_local_toc_table(abfd) = local_syms;
+ for (i = 0; i < obj_raw_syment_count(abfd); ++i)
+ local_syms[i] = 1;
+ }
+
+ if (local_syms[sym] == 1)
+ {
+ local_syms[sym] = global_toc_size;
+ ret_val = global_toc_size;
+ global_toc_size += 4;
+#ifdef TOC_DEBUG
+ fprintf(stderr,
+ "Setting toc_offset for local sym %d to %d\n",
+ sym, ret_val);
+#endif
+ }
+ else
+ {
+ ret_val = local_syms[sym];
+#ifdef TOC_DEBUG
+ fprintf(stderr,
+ "toc_offset already set for local sym %d to %d\n",
+ sym, ret_val);
+#endif
+ }
+ }
+ else
+ {
+ name = h->root.root.string;
+
+ /* check to see if there's a toc slot allocated. If not, do it
+ here. It will be used in relocate_section */
+ if (h->toc_offset == 1)
+ {
+ h->toc_offset = global_toc_size;
+ ret_val = global_toc_size;
+ global_toc_size += 4;
+#ifdef TOC_DEBUG
+ fprintf(stderr,
+ "Setting toc_offset for sym %d (%s) [h=%p] to %d\n",
+ sym, name, h, ret_val);
+#endif
+ }
+ else
+ {
+ ret_val = h->toc_offset;
+#ifdef TOC_DEBUG
+ fprintf(stderr,
+ "toc_offset already set for sym %d (%s) [h=%p] to %d\n",
+ sym, name, h, ret_val);
+#endif
+ }
+ }
+
+ return ret_val;
+}
+
+\f
/* Provided the symbol, returns the value reffed */
static long get_symbol_value PARAMS ((asymbol *));
long relocation = 0;
if (bfd_is_com_section (symbol->section))
- {
- relocation = 0;
- }
+ {
+ relocation = 0;
+ }
else
- {
- relocation = symbol->value +
- symbol->section->output_section->vma +
- symbol->section->output_offset;
- }
+ {
+ relocation = symbol->value +
+ symbol->section->output_section->vma +
+ symbol->section->output_offset;
+ }
return(relocation);
}
+/* Return true if this relocation should
+ appear in the output .reloc section. */
+
+static boolean in_reloc_p(abfd, howto)
+ bfd * abfd;
+ reloc_howto_type *howto;
+{
+ return
+ (! howto->pc_relative)
+ && (howto->type != IMAGE_REL_PPC_TOCREL16)
+ && (howto->type != IMAGE_REL_PPC_IMGLUE);
+}
+
/* this function is in charge of performing all the ppc PE relocations */
/* Don't yet know if we want to do this this particular way ... (krk) */
-/* (it is not yet enabled) */
+/* FIXME: (it is not yet enabled) */
static bfd_reloc_status_type
pe_ppc_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd,
- error_message)
+ error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol_in;
unsigned long unsigned_value;
unsigned short r_type;
long signed_value;
-
+
unsigned long addr = reloc_entry->address ; /*+ input_section->vma*/
bfd_byte *hit_data =addr + (bfd_byte *)(data);
- r_type = reloc_entry->howto->type;
+ fprintf(stderr, "pe_ppc_reloc (%s)\n", TARGET_LITTLE_NAME);
- if (output_bfd) {
- /* Partial linking - do nothing */
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
+ r_type = reloc_entry->howto->type;
- }
+ if (output_bfd)
+ {
+ /* Partial linking - do nothing */
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
if (symbol_in != NULL
&& bfd_is_und_section (symbol_in->section))
- {
- /* Keep the state machine happy in case we're called again */
- if (r_type == IMAGE_REL_PPC_REFHI)
{
- part1_consth_active = true;
- part1_consth_value = 0;
+ /* Keep the state machine happy in case we're called again */
+ if (r_type == IMAGE_REL_PPC_REFHI)
+ {
+ part1_consth_active = true;
+ part1_consth_value = 0;
+ }
+ return(bfd_reloc_undefined);
}
- return(bfd_reloc_undefined);
- }
-
+
if ((part1_consth_active) && (r_type != IMAGE_REL_PPC_PAIR))
- {
- part1_consth_active = false;
- *error_message = (char *) "Missing PAIR";
- return(bfd_reloc_dangerous);
- }
-
-
- sym_value = get_symbol_value(symbol_in);
-
-#if 0
-
- switch (r_type)
- {
- case R_IREL:
- insn = bfd_get_32(abfd, hit_data);
- /* Take the value in the field and sign extend it */
- signed_value = EXTRACT_HWORD(insn);
- signed_value = SIGN_EXTEND_HWORD(signed_value);
- signed_value <<= 2;
- signed_value += sym_value + reloc_entry->addend;
- if (((signed_value + reloc_entry->address) & ~0x3ffff) == 0)
- { /* Absolute jmp/call */
- insn |= (1<<24); /* Make it absolute */
- signed_value += reloc_entry->address;
- /* FIXME: Should we change r_type to R_IABS */
- }
- else
{
- /* Relative jmp/call, so subtract from the value the
- address of the place we're coming from */
- signed_value -= (input_section->output_section->vma
- + input_section->output_offset);
- if (signed_value>0x1ffff || signed_value<-0x20000)
- return(bfd_reloc_overflow);
- }
- signed_value >>= 2;
- insn = INSERT_HWORD(insn, signed_value);
- bfd_put_32(abfd, insn ,hit_data);
- break;
- case R_ILOHALF:
- insn = bfd_get_32(abfd, hit_data);
- unsigned_value = EXTRACT_HWORD(insn);
- unsigned_value += sym_value + reloc_entry->addend;
- insn = INSERT_HWORD(insn, unsigned_value);
- bfd_put_32(abfd, insn, hit_data);
- break;
- case R_IHIHALF:
- insn = bfd_get_32(abfd, hit_data);
- /* consth, part 1
- Just get the symbol value that is referenced */
- part1_consth_active = true;
- part1_consth_value = sym_value + reloc_entry->addend;
- /* Don't modify insn until R_IHCONST */
- break;
- case R_IHCONST:
- insn = bfd_get_32(abfd, hit_data);
- /* consth, part 2
- Now relocate the reference */
- if (part1_consth_active == false) {
- *error_message = (char *) "Missing IHIHALF";
+ part1_consth_active = false;
+ *error_message = (char *) "Missing PAIR";
return(bfd_reloc_dangerous);
}
- /* sym_ptr_ptr = r_symndx, in coff_slurp_reloc_table() */
- unsigned_value = 0; /*EXTRACT_HWORD(insn) << 16;*/
- unsigned_value += reloc_entry->addend; /* r_symndx */
- unsigned_value += part1_consth_value;
- unsigned_value = unsigned_value >> 16;
- insn = INSERT_HWORD(insn, unsigned_value);
- part1_consth_active = false;
- bfd_put_32(abfd, insn, hit_data);
- break;
- case R_BYTE:
- insn = bfd_get_8(abfd, hit_data);
- unsigned_value = insn + sym_value + reloc_entry->addend;
- if (unsigned_value & 0xffffff00) {
- fprintf(stderr,"Relocation problem : ");
- fprintf(stderr,"byte value too large in module %s\n",
- abfd->filename);
- return(bfd_reloc_overflow);
- }
- bfd_put_8(abfd, unsigned_value, hit_data);
- break;
- case R_HWORD:
- insn = bfd_get_16(abfd, hit_data);
- unsigned_value = insn + sym_value + reloc_entry->addend;
- if (unsigned_value & 0xffff0000) {
- fprintf(stderr,"Relocation problem : ");
- fprintf(stderr,"hword value too large in module %s\n",
- abfd->filename);
- return(bfd_reloc_overflow);
- }
- bfd_put_16(abfd, insn, hit_data);
- break;
- case R_WORD:
- insn = bfd_get_32(abfd, hit_data);
- insn += sym_value + reloc_entry->addend;
- bfd_put_32(abfd, insn, hit_data);
- break;
- default:
- *error_message = "Unrecognized reloc";
- return (bfd_reloc_dangerous);
- }
-
-#endif
+ sym_value = get_symbol_value(symbol_in);
+
return(bfd_reloc_ok);
}
static boolean
coff_ppc_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, syms, sections)
+ contents, relocs, syms, sections)
bfd *output_bfd;
struct bfd_link_info *info;
bfd *input_bfd;
struct internal_reloc *relend;
boolean hihalf;
bfd_vma hihalf_val;
-
- unsigned short r_type = EXTRACT_TYPE (rel->r_type);
- unsigned short r_flags = EXTRACT_FLAGS(rel->r_type);
- unsigned short junk = EXTRACT_JUNK (rel->r_type);
-
+ asection *toc_section = 0;
+ bfd_vma relocation;
+ reloc_howto_type *howto = 0;
+
+#ifdef DEBUG_RELOC
+ fprintf(stderr,
+ "pe_ppc_relocate_section (%s) for %s \n",
+ TARGET_LITTLE_NAME,
+ input_section->name);
+
+#endif
/* 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;
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;
+
+ asection *sec;
bfd_reloc_status_type rstat;
+ bfd_byte *loc;
+
+ unsigned short r_type = EXTRACT_TYPE (rel->r_type);
+ unsigned short r_flags = EXTRACT_FLAGS(rel->r_type);
+ unsigned short junk = EXTRACT_JUNK (rel->r_type);
+
+#ifdef DEBUG_RELOC
+ /* now examine flags */
+ if (r_flags != 0)
+ {
+ fprintf (stderr, "Reloc with flags found!");
+ if ( r_flags & IMAGE_REL_PPC_NEG )
+ fprintf (stderr, " NEG");
+ if ( r_flags & IMAGE_REL_PPC_BRTAKEN )
+ fprintf (stderr, " BRTAKEN");
+ if ( r_flags & IMAGE_REL_PPC_BRNTAKEN )
+ fprintf (stderr, " BRNTAKEN");
+ if ( r_flags & IMAGE_REL_PPC_TOCDEFN )
+ fprintf (stderr, " TOCDEFN");
+ fprintf(stderr, "\n");
+ }
+#endif
symndx = rel->r_symndx;
loc = contents + rel->r_vaddr - input_section->vma;
+ /* FIXME: check bounds on r_type */
+ howto = ppc_coff_howto_table + r_type;
+
if (symndx == -1)
- h = NULL;
+ {
+ h = NULL;
+ sym = NULL;
+ }
else
- h = obj_coff_sym_hashes (input_bfd)[symndx];
+ {
+ h = obj_coff_sym_hashes (input_bfd)[symndx];
+ sym = syms + symndx;
+ }
- sym = NULL;
sec = NULL;
val = 0;
- overflow = false;
+ /* FIXME: PAIR unsupported in the following code */
+ if (h == NULL)
+ {
+ if (symndx == -1)
+ sec = bfd_abs_section_ptr;
+ else
+ {
+ 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;
+ }
+ }
+ rstat = bfd_reloc_ok;
+
+ /* Each case must do its own relocation, setting rstat appropriately */
switch (r_type)
{
default:
- fprintf( stderr, "unsupported reloc %s\n",
- ppc_coff_howto_table[r_type].name);
+ fprintf( stderr,
+ "ERROR: during reloc processing -- unsupported reloc %s\n",
+ howto->name);
bfd_set_error (bfd_error_bad_value);
+ abort();
return false;
case IMAGE_REL_PPC_TOCREL16:
+ {
+ bfd_vma our_toc_offset;
+ int fixit;
+
+ DUMP_RELOC2(howto->name, rel);
+
+ if (toc_section == 0)
+ {
+ toc_section = bfd_get_section_by_name (bfd_of_toc_owner,
+ TOC_SECTION_NAME);
+#ifdef TOC_DEBUG
+
+ fprintf(stderr,
+ "BFD of toc owner %p, section addr of %s %p\n",
+ bfd_of_toc_owner, TOC_SECTION_NAME, toc_section);
+#endif
+
+ if ( toc_section == NULL )
+ {
+ fprintf(stderr, "No Toc section!\n");
+ abort();
+ }
+ }
+
+ /*
+ * Amazing bit tricks present. As we may have seen earlier, we
+ * use the 1 bit to tell us whether or not a toc offset has been
+ * allocated. Now that they've all been allocated, we will use
+ * the 1 bit to tell us if we've written this particular toc
+ * entry out.
+ */
+ fixit = false;
+ if (h == 0)
+ { /* it is a file local symbol */
+ int *local_toc_table;
+ const char *name;
+
+ sym = syms + symndx;
+ name = sym->_n._n_name;
+
+ local_toc_table = obj_coff_local_toc_table(input_bfd);
+ our_toc_offset = local_toc_table[symndx];
+
+ if ((our_toc_offset & 1) != 0)
+ {
+ /* if it has been written out, it is marked with the
+ 1 bit. Fix up our offset, but do not write it out
+ again.
+ */
+ our_toc_offset &= ~1;
+#ifdef TOC_DEBUG
+
+ fprintf(stderr,
+ "Not writing out toc_offset of %d for %s\n", our_toc_offset, name);
+#endif
+ }
+ else
+ {
+ /* write out the toc entry */
+#ifdef TOC_DEBUG
+ fprintf(stderr,
+ "Writing out toc_offset toc_section (%p,%p)+%d val %d for %s\n",
+ toc_section,
+ toc_section->contents,
+ our_toc_offset,
+ val,
+ name);
+#endif
+
+ bfd_put_32(output_bfd,
+ val,
+ toc_section->contents + our_toc_offset);
+
+ local_toc_table[symndx] |= 1;
+ fixit = true;
+ }
+ }
+ else
+ {
+ const char *name = h->root.root.string;
+ our_toc_offset = h->toc_offset;
+ if ((our_toc_offset & 1) != 0)
+ {
+ /* if it has been written out, it is marked with the
+ 1 bit. Fix up our offset, but do not write it out
+ again.
+ */
+ our_toc_offset &= ~1;
+#ifdef TOC_DEBUG
+ fprintf(stderr,
+ "Not writing out toc_offset of %d for %s\n", our_toc_offset, name);
+#endif
+ }
+ else
+ {
+#ifdef TOC_DEBUG
+ /* write out the toc entry */
+ fprintf(stderr,
+ "Writing out toc_offset toc_section (%p,%p)+%d val %d for %s\n",
+ toc_section,
+ toc_section->contents,
+ our_toc_offset,
+ val,
+ name);
+#endif
+
+ /* write out the toc entry */
+ bfd_put_32(output_bfd,
+ val,
+ toc_section->contents + our_toc_offset);
+
+ h->toc_offset |= 1;
+ /* The tricky part is that this is the address that */
+ /* needs a .reloc entry for it */
+ fixit = true;
+ }
+ }
+
+ if (fixit && info->base_file)
+ {
+ /* So if this is non pcrelative, and is referenced
+ to a section or a common symbol, then it needs a reloc */
+
+ /* relocation to a symbol in a section which
+ isn't absolute - we output the address here
+ to a file */
+
+ bfd_vma addr = toc_section->output_section->vma
+ + toc_section->output_offset + our_toc_offset;
+
+ fprintf(stderr,
+ " Toc Section reloc candidate\n");
+
+ if (coff_data(output_bfd)->pe)
+ addr -= pe_data(output_bfd)->pe_opthdr.ImageBase;
+ fwrite (&addr, 1,4, (FILE *) info->base_file);
+ }
+
+
+ /* FIXME: this test is conservative */
+ if (our_toc_offset > toc_section->_raw_size)
+ {
+ fprintf(stderr,
+ "reloc offset is bigger than the toc size!\n");
+ abort();
+ }
+
+ /* Now we know the relocation for this toc reference */
+ relocation = our_toc_offset + TOC_LOAD_ADJUSTMENT;
+ rstat = _bfd_relocate_contents (howto,
+ input_bfd,
+ relocation,
+ loc);
+ }
+ break;
case IMAGE_REL_PPC_IFGLUE:
- case IMAGE_REL_PPC_SECTION:
+ /* To solve this, we need to know whether or not the symbol */
+ /* appearing on the call instruction is a function included */
+ /* in the link or not. If it is, then we leave the nop instruction */
+ /* alone, and the reloc is done. */
+
+ /* Actually, for dll support on NT, this is likely not necessary at
+ all. For any library function, a glue code stub must be supplied
+ to the linker, and the glue will take care of the toc reload */
+ DUMP_RELOC2(howto->name, rel);
+#if 0
+ if (h == 0)
+ {
+ /* this better be a static function */
+ fprintf(stderr,
+ "It's a static function.... \n");
+ }
+ else
+ {
+ /* this is an externally visible function */
+ /* is it present? */
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ fprintf(stderr,
+ "The function is present. \n");
+ ;
+ }
+ else
+ {
+ fprintf(stderr,
+ "The function is not present. \n");
+ }
+ }
+#endif
+ break;
case IMAGE_REL_PPC_SECREL:
- case IMAGE_REL_PPC_IMGLUE:
+ /* Unimplemented: codeview debugging information */
+ /* For fast access to the header of the section
+ containing the item. */
+ break;
+ case IMAGE_REL_PPC_SECTION:
+ /* Unimplemented: codeview debugging information */
+ /* Is used to indicate that the value should be relative
+ to the beginning of the section that contains the
+ symbol */
+ break;
case IMAGE_REL_PPC_ABSOLUTE:
+ case IMAGE_REL_PPC_IMGLUE:
+ {
+ const char *my_name;
+ if (h == 0)
+ my_name = (syms+symndx)->_n._n_name;
+ else
+ my_name = h->root.root.string;
+
+ fprintf(stderr,
+ "Warning: unsupported reloc %s <file %s, section %s>\n",
+ howto->name,
+ bfd_get_filename(input_bfd),
+ input_section->name);
+
+ fprintf(stderr,"sym %d (%s), r_vaddr %d (%x)\n",
+ rel->r_symndx, my_name, rel->r_vaddr, rel->r_vaddr);
+ }
+ break;
+
+ case IMAGE_REL_PPC_ADDR32NB:
+ {
+ struct coff_link_hash_entry *myh = 0;
+ const char *name = 0;
+ DUMP_RELOC2(howto->name, rel);
+ if (h == 0)
+ { /* it is a file local symbol */
+ sym = syms + symndx;
+ name = sym->_n._n_name;
+ }
+ else
+ {
+ char *target = 0;
+
+ name = h->root.root.string;
+ if (strcmp(".idata$2", name) == 0)
+ target = "__idata2_magic__";
+ else if (strcmp(".idata$4", name) == 0)
+ target = "__idata4_magic__";
+ else if (strcmp(".idata$5", name) == 0)
+ target = "__idata5_magic__";
+ else
+ abort();
+
+ myh = 0;
+
+ myh = coff_link_hash_lookup (coff_hash_table (info),
+ target,
+ false, false, true);
+ if (myh == 0)
+ {
+ fprintf(stderr, "Missing idata magic cookies, this cannot work anyway...\n");
+ abort();
+ }
+
+ val = myh->root.u.def.value + sec->output_section->vma + sec->output_offset;
+ if (first_thunk_address == 0)
+ {
+ int idata5offset;
+ myh = coff_link_hash_lookup (coff_hash_table (info),
+ "__idata5_magic__",
+ false, false, true);
+ first_thunk_address = myh->root.u.def.value + sec->output_section->vma +
+ sec->output_offset - pe_data(output_bfd)->pe_opthdr.ImageBase;
+
+ idata5offset = myh->root.u.def.value;
+ myh = coff_link_hash_lookup (coff_hash_table (info),
+ "__idata6_magic__",
+ false, false, true);
+
+ thunk_size = myh->root.u.def.value - idata5offset;
+ myh = coff_link_hash_lookup (coff_hash_table (info),
+ "__idata4_magic__",
+ false, false, true);
+ import_table_size = myh->root.u.def.value;
+ }
+ }
+
+ rstat = _bfd_relocate_contents (howto,
+ input_bfd,
+ val - pe_data(output_bfd)->pe_opthdr.ImageBase,
+ loc);
+ }
break;
case IMAGE_REL_PPC_ADDR16:
case IMAGE_REL_PPC_REL24:
case IMAGE_REL_PPC_ADDR24:
case IMAGE_REL_PPC_ADDR32:
- case IMAGE_REL_PPC_ADDR32NB:
- rstat = _bfd_relocate_contents (ppc_coff_howto_table + r_type,
- input_bfd, val, loc);
- if (rstat == bfd_reloc_overflow)
- overflow = true;
- else if (rstat != bfd_reloc_ok)
- abort ();
+ DUMP_RELOC2(howto->name, rel);
+ rstat = _bfd_relocate_contents (howto,
+ input_bfd,
+ val,
+ loc);
break;
}
- if (overflow)
+ if ( info->base_file )
{
- 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
+ /* So if this is non pcrelative, and is referenced
+ to a section or a common symbol, then it needs a reloc */
+ if (sym && pe_data(output_bfd)->in_reloc_p(output_bfd, howto))
{
- strncpy (buf, sym->_n._n_name, SYMNMLEN);
- buf[SYMNMLEN] = '\0';
- name = buf;
+ /* relocation to a symbol in a section which
+ isn't absolute - we output the address here
+ to a file */
+ bfd_vma addr = rel->r_vaddr
+ - input_section->vma
+ + input_section->output_offset
+ + input_section->output_section->vma;
+
+ if (coff_data(output_bfd)->pe)
+ {
+ addr -= pe_data(output_bfd)->pe_opthdr.ImageBase;
+ fprintf(stderr,
+ " adjusted down to %d", addr);
+ }
+ fprintf(stderr, "\n");
+
+ fwrite (&addr, 1,4, (FILE *) info->base_file);
}
+ }
- if (! ((*info->callbacks->reloc_overflow)
- (info, name, ppc_coff_howto_table[r_type].name, (bfd_vma) 0,
- input_bfd, input_section,
- rel->r_vaddr - input_section->vma)))
- return false;
+ switch (rstat)
+ {
+ default:
+ abort ();
+ case bfd_reloc_ok:
+ break;
+ case bfd_reloc_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 0
+ else
+ {
+ name = _bfd_coff_internal_syment_name (input_bfd, sym, buf);
+ if (name == NULL)
+ return false;
+ }
+#endif
+
+ if (! ((*info->callbacks->reloc_overflow)
+ (info, name, howto->name,
+ (bfd_vma) 0, input_bfd,
+ input_section, rel->r_vaddr - input_section->vma)))
+ return false;
+ }
}
+
}
return true;
}
-\f
+#ifdef COFF_IMAGE_WITH_PE
-/* Some really cheezy macros that can be turned on to test stderr :-) */
+long int global_toc_size = 0;
-#ifdef DEBUG_RELOC
-#define UN_IMPL(x) \
-{ \
- static int i; \
- if (i == 0) \
- { \
- i = 1; \
- fprintf(stderr,"Unimplemented Relocation -- %s\n",x); \
- } \
-}
+bfd* bfd_of_toc_owner = 0;
-#define DUMP_RELOC(n,r) \
-{ \
- fprintf(stderr,"%s sym %d, addr %d, addend %d\n", \
- n, (*(r->sym_ptr_ptr))->name, \
- r->address, r->addend); \
+long int import_table_size;
+long int first_thunk_address;
+long int thunk_size;
+
+
+boolean
+ppc_allocate_toc_section (info)
+ struct bfd_link_info *info;
+{
+ asection *s;
+ bfd_byte *foo;
+ static char test_char = '1';
+
+#ifdef DEBUG_TOC
+ fprintf(stderr,
+ "ppc_allocate_toc_section: allocating %s section of size %d\n",
+ TOC_SECTION_NAME, global_toc_size);
+#endif
+
+ if ( global_toc_size == 0 ) /* FIXME: does this get me in trouble? */
+ return true;
+
+ if (bfd_of_toc_owner == 0)
+ {
+ fprintf(stderr,
+ "There is no bfd that owns the toc section!\n");
+ abort();
+ }
+
+ s = bfd_get_section_by_name ( bfd_of_toc_owner , TOC_SECTION_NAME);
+ if (s == NULL)
+ {
+ fprintf(stderr, "No Toc section!\n");
+ abort();
+ }
+
+ foo = bfd_alloc(bfd_of_toc_owner, global_toc_size);
+ memset(foo, test_char, global_toc_size);
+
+ s->_raw_size = s->_cooked_size = global_toc_size;
+ s->contents = foo;
+
+ return true;
}
-#define DUMP_RELOC2(n,r) \
-{ \
- fprintf(stderr,"%s sym %d, r_vaddr %d\n", \
- n, r->r_symndx, r->r_vaddr); \
+boolean
+ppc_process_before_allocation (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ asection *sec;
+ struct internal_reloc *i, *rel;
+
+#if 0
+ fprintf(stderr,
+ "ppc_process_before_allocation: BFD %s\n",
+ bfd_get_filename(abfd));
+#endif
+
+ /* here we have a bfd that is to be included on the link. We have a hook
+ to do reloc rummaging, before section sizes are nailed down. */
+
+ _bfd_coff_get_external_symbols(abfd);
+
+ /* rummage around all the relocs and map the toc */
+ sec = abfd->sections;
+
+ if (sec == 0)
+ {
+ return true;
+ }
+
+ for (; sec != 0; sec = sec->next)
+ {
+ int toc_offset;
+#ifdef DEBUG_RELOC
+ fprintf(stderr,
+ " section %s reloc count %d\n",
+ sec->name,
+ sec->reloc_count);
+#endif
+
+ if (sec->reloc_count == 0)
+ continue;
+
+ /* load the relocs */
+ /* FIXME: there may be a storage leak here */
+ i=_bfd_coff_read_internal_relocs(abfd,sec,1,0,0,0);
+
+ if (i == 0)
+ abort();
+
+ for (rel=i;rel<i+sec->reloc_count;++rel)
+ {
+ unsigned short r_type = EXTRACT_TYPE (rel->r_type);
+ unsigned short r_flags = EXTRACT_FLAGS(rel->r_type);
+ unsigned short junk = EXTRACT_JUNK (rel->r_type);
+
+#ifdef DEBUG_RELOC
+ /* now examine flags */
+ if (r_flags != 0)
+ {
+ fprintf (stderr, "Reloc with flags found!");
+ if ( r_flags & IMAGE_REL_PPC_NEG )
+ fprintf (stderr, " NEG");
+ if ( r_flags & IMAGE_REL_PPC_BRTAKEN )
+ fprintf (stderr, " BRTAKEN");
+ if ( r_flags & IMAGE_REL_PPC_BRNTAKEN )
+ fprintf (stderr, " BRNTAKEN");
+ if ( r_flags & IMAGE_REL_PPC_TOCDEFN )
+ fprintf (stderr, " TOCDEFN");
+ fprintf(stderr, "\n");
+ }
+#endif
+
+ DUMP_RELOC2(ppc_coff_howto_table[r_type].name, rel);
+
+ switch(r_type)
+ {
+ case IMAGE_REL_PPC_TOCREL16:
+ toc_offset = ppc_record_toc_entry(abfd, info, sec,
+ rel->r_symndx, default_toc);
+ break;
+ default:
+ break;
+ }
+ }
+ }
}
-#else
-#define UN_IMPL(x)
-#define DUMP_RELOC(n,r)
-#define DUMP_RELOC2(n,r)
#endif
r_type);
break;
}
-
+
relent->howto = ppc_coff_howto_table + r_type;
-
+
}
static reloc_howto_type *
unsigned short r_flags = EXTRACT_FLAGS(rel->r_type);
unsigned short junk = EXTRACT_JUNK (rel->r_type);
+fprintf(stderr,
+ "coff_ppc_rtype_to_howto\n");
+
/* the masking process only slices off the bottom byte for r_type. */
if ( r_type > MAX_RELOC_INDEX )
{
r_type, 0, MAX_RELOC_INDEX);
abort();
}
-
+
/* check for absolute crap */
if ( junk != 0 )
{
rel->r_type, junk);
abort();
}
-
+
#ifdef DEBUG_RELOC
/* now examine flags */
if (r_flags != 0)
fprintf(stderr, "\n");
}
#endif
-
+
switch(r_type)
{
case IMAGE_REL_PPC_ADDR32NB:
r_type);
break;
}
-
+
howto = ppc_coff_howto_table + r_type;
return howto;
}
/* a cheesy little macro to make the code a little more readable */
#define HOW2MAP(bfd_rtype,ppc_rtype) \
- case bfd_rtype: return &ppc_coff_howto_table[ppc_rtype]
+ case bfd_rtype: return &ppc_coff_howto_table[ppc_rtype]
static reloc_howto_type *ppc_coff_reloc_type_lookup
- PARAMS ((bfd *, bfd_reloc_code_real_type));
+PARAMS ((bfd *, bfd_reloc_code_real_type));
static reloc_howto_type *
ppc_coff_reloc_type_lookup (abfd, code)
bfd *abfd;
bfd_reloc_code_real_type code;
{
-
+
#ifdef DEBUG_RELOC
fprintf(stderr, "ppc_coff_reloc_type_lookup for %s\n",
- bfd_get_reloc_code_name(code));
+ bfd_get_reloc_code_name(code));
#endif
-
+
switch (code)
{
HOW2MAP(BFD_RELOC_16_GOT_PCREL, IMAGE_REL_PPC_IFGLUE);
HOW2MAP(BFD_RELOC_PPC_BA26, IMAGE_REL_PPC_ADDR24);
HOW2MAP(BFD_RELOC_PPC_TOC16, IMAGE_REL_PPC_TOCREL16);
HOW2MAP(BFD_RELOC_32, IMAGE_REL_PPC_ADDR32);
- default: return NULL;
+ HOW2MAP(BFD_RELOC_RVA, IMAGE_REL_PPC_ADDR32NB);
+ default:
+ fprintf(stderr,
+ "\treturning NULL\n");
+ return NULL;
}
-
+
return NULL;
}
#define RTYPE2HOWTO(cache_ptr, dst) ppc_coff_rtype2howto (cache_ptr, dst)
-/* We use the special COFF backend linker. */
-/* #define coff_relocate_section _bfd_coff_generic_relocate_section */
+#ifndef COFF_IMAGE_WITH_PE
+static void
+ppc_coff_swap_sym_in_hook ();
+#endif
+
+/* We use the special COFF backend linker, with our own special touch. */
+
#define coff_bfd_reloc_type_lookup ppc_coff_reloc_type_lookup
#define coff_rtype_to_howto coff_ppc_rtype_to_howto
#define coff_relocate_section coff_ppc_relocate_section
+#ifndef COFF_IMAGE_WITH_PE
+#define coff_swap_sym_in_hook ppc_coff_swap_sym_in_hook
+#endif
+
#define SELECT_RELOC(internal, howto) {internal.r_type=howto->type;}
#define COFF_PAGE_SIZE 0x1000
+#define POWERPC_LE_PE
+
#include "coffcode.h"
+\f
+
+#ifndef COFF_IMAGE_WITH_PE
+static void
+ppc_coff_swap_sym_in_hook (abfd, ext1, in1)
+ bfd *abfd;
+ PTR ext1;
+ PTR in1;
+{
+ SYMENT *ext = (SYMENT *)ext1;
+ struct internal_syment *in = (struct internal_syment *)in1;
+
+#if 0
+ if (bfd_of_toc_owner != 0) /* we already have a toc, so go home */
+ return;
+#endif
+
+ if (strcmp(in->_n._n_name, ".toc") == 0)
+ {
+ flagword flags;
+ register asection *s;
+ char *foo;
+
+ s = bfd_get_section_by_name ( abfd , TOC_SECTION_NAME);
+ if (s != NULL)
+ {
+ return;
+ }
+
+ flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY ;
+
+#ifdef TOC_DEBUG
+ fprintf(stderr,
+ "ppc_coff_swap_sym_in_hook: about to create the %s section\n",
+ TOC_SECTION_NAME);
+#endif
+
+ s = bfd_make_section (abfd, TOC_SECTION_NAME);
+
+ if (s == NULL
+ || !bfd_set_section_flags (abfd, s, flags)
+ || !bfd_set_section_alignment (abfd, s, 2))
+ {
+ fprintf(stderr,
+ "toc section allocation failed!\n");
+ abort();
+ }
+
+ /* save the bfd for later allocation */
+ bfd_of_toc_owner = abfd;
+ }
+
+ return;
+}
+#endif
+
+\f
+
/* The transfer vectors that lead the outside world to all of the above. */
#ifdef TARGET_LITTLE_SYM
(HAS_RELOC | EXEC_P | /* FIXME: object flags */
HAS_LINENO | HAS_DEBUG |
HAS_SYMS | HAS_LOCALS | WP_TEXT),
-
+
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
0, /* leading char */
'/', /* ar_pad_char */
15, /* ar_max_namelen??? FIXMEmgo */
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
- bfd_getl32, bfd_getl_signed_32, bfd_putl32,
- bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
- bfd_getl64, bfd_getl_signed_64, bfd_putl64,
- bfd_getl32, bfd_getl_signed_32, bfd_putl32,
- bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
+ bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+ bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
+ bfd_getl64, bfd_getl_signed_64, bfd_putl64,
+ bfd_getl32, bfd_getl_signed_32, bfd_putl32,
+ bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
+
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
bfd_generic_archive_p, /* _bfd_dummy_target */ coff_object_p },
{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
bfd_false},
{bfd_false, coff_write_object_contents, /* bfd_write_contents */
_bfd_write_archive_contents, bfd_false},
-
+
BFD_JUMP_TABLE_GENERIC (coff),
BFD_JUMP_TABLE_COPY (coff),
BFD_JUMP_TABLE_CORE (_bfd_nocore),
BFD_JUMP_TABLE_WRITE (coff),
BFD_JUMP_TABLE_LINK (coff),
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
-
+
COFF_SWAP_TABLE,
};
#endif
15, /* ar_max_namelen??? FIXMEmgo */
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
- bfd_getb32, bfd_getb_signed_32, bfd_putb32,
- bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
+ bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+ bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
+
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
- bfd_getb32, bfd_getb_signed_32, bfd_putb32,
- bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
+ bfd_getb32, bfd_getb_signed_32, bfd_putb32,
+ bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
bfd_generic_archive_p, /* _bfd_dummy_target */ coff_object_p },
projects / external / binutils.git / commitdiff