You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "bfd.h"
#include "sysdep.h"
#include "coff/internal.h"
#include "libcoff.h"
-static bfd_reloc_status_type sh_reloc();
+/* Internal functions. */
+static bfd_reloc_status_type sh_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static long get_symbol_value PARAMS ((asymbol *));
+static boolean sh_relax_section
+ PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
+static boolean sh_relax_delete_bytes
+ PARAMS ((bfd *, asection *, bfd_vma, int));
+static boolean sh_relocate_section
+ PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
+ struct internal_reloc *, struct internal_syment *, asection **));
+static bfd_byte *sh_coff_get_relocated_section_contents
+ PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
+ bfd_byte *, boolean, asymbol **));
+/* Default section alignment to 2**2. */
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
-/*#define COFF_LONG_FILENAMES*/
+/* Generate long file names. */
+#define COFF_LONG_FILENAMES
-static reloc_howto_type r_imm32 =
- {R_SH_IMM32, 0, 2, 32, false, 0,
- complain_overflow_bitfield, sh_reloc,"r_imm32", true, 0xffffffff,0xffffffff, false};
+/* The supported relocations. There are a lot of relocations defined
+ in coff/internal.h which we do not expect to ever see. */
+static reloc_howto_type sh_coff_howtos[] =
+{
+ { 0 },
+ { 1 },
+ { 2 },
+ { 3 }, /* R_SH_PCREL8 */
+ { 4 }, /* R_SH_PCREL16 */
+ { 5 }, /* R_SH_HIGH8 */
+ { 6 }, /* R_SH_IMM24 */
+ { 7 }, /* R_SH_LOW16 */
+ { 8 },
+ { 9 }, /* R_SH_PCDISP8BY4 */
+
+ HOWTO (R_SH_PCDISP8BY2, /* type */
+ 1, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ sh_reloc, /* special_function */
+ "r_pcdisp8by2", /* name */
+ true, /* partial_inplace */
+ 0xff, /* src_mask */
+ 0xff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ { 11 }, /* R_SH_PCDISP8 */
+
+ HOWTO (R_SH_PCDISP, /* type */
+ 1, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ sh_reloc, /* special_function */
+ "r_pcdisp12by2", /* name */
+ true, /* partial_inplace */
+ 0xfff, /* src_mask */
+ 0xfff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ { 13 },
+
+ HOWTO (R_SH_IMM32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ sh_reloc, /* special_function */
+ "r_imm32", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ { 15 },
+ { 16 }, /* R_SH_IMM8 */
+ { 17 }, /* R_SH_IMM8BY2 */
+ { 18 }, /* R_SH_IMM8BY4 */
+ { 19 }, /* R_SH_IMM4 */
+ { 20 }, /* R_SH_IMM4BY2 */
+ { 21 }, /* R_SH_IMM4BY4 */
+
+ HOWTO (R_SH_PCRELIMM8BY2, /* type */
+ 1, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ sh_reloc, /* special_function */
+ "r_pcrelimm8by2", /* name */
+ true, /* partial_inplace */
+ 0xff, /* src_mask */
+ 0xff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ HOWTO (R_SH_PCRELIMM8BY4, /* type */
+ 2, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ sh_reloc, /* special_function */
+ "r_pcrelimm8by4", /* name */
+ true, /* partial_inplace */
+ 0xff, /* src_mask */
+ 0xff, /* dst_mask */
+ true), /* pcrel_offset */
+
+ HOWTO (R_SH_IMM16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ sh_reloc, /* special_function */
+ "r_imm16", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (R_SH_SWITCH16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ sh_reloc, /* special_function */
+ "r_switch16", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+ HOWTO (R_SH_SWITCH32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ sh_reloc, /* special_function */
+ "r_switch32", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+ HOWTO (R_SH_USES, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ sh_reloc, /* special_function */
+ "r_uses", /* name */
+ true, /* partial_inplace */
+ 0xffff, /* src_mask */
+ 0xffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (R_SH_COUNT, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ sh_reloc, /* special_function */
+ "r_count", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ HOWTO (R_SH_ALIGN, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ sh_reloc, /* special_function */
+ "r_align", /* name */
+ true, /* partial_inplace */
+ 0xffffffff, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false) /* pcrel_offset */
+};
+
+#define SH_COFF_HOWTO_COUNT (sizeof sh_coff_howtos / sizeof sh_coff_howtos[0])
+
+/* Check for a bad magic number. */
#define BADMAG(x) SHBADMAG(x)
-#define SH 1 /* Customize coffcode.h */
+/* Customize coffcode.h (this is not currently used). */
+#define SH 1
+
+/* FIXME: This should not be set here. */
#define __A_MAGIC_SET__
-/* Code to swap in the reloc */
-#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
- dst->r_stuff[0] = 'S'; \
- dst->r_stuff[1] = 'C';
+/* Swap the r_offset field in and out. */
+#define SWAP_IN_RELOC_OFFSET bfd_h_get_32
+#define SWAP_OUT_RELOC_OFFSET bfd_h_put_32
+
+/* Swap out extra information in the reloc structure. */
+#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
+ do \
+ { \
+ dst->r_stuff[0] = 'S'; \
+ dst->r_stuff[1] = 'C'; \
+ } \
+ while (0)
+
+/* Get the value of a symbol, when performing a relocation. */
-/* Code to turn a r_type into a howto ptr, uses the above howto table. */
static long
get_symbol_value (symbol)
asymbol *symbol;
{
- long relocation = 0;
+ bfd_vma relocation;
if (bfd_is_com_section (symbol->section))
- {
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 relocation;
}
-#define RTYPE2HOWTO(x,y) ((x)->howto = &r_imm32)
-
-
-/* Compute the addend of a reloc. If the reloc is to a common symbol,
- the object file contains the value of the common symbol. By the
- time this is called, the linker may be using a different symbol
- from a different object file with a different value. Therefore, we
- hack wildly to locate the original symbol from this file so that we
- can make the correct adjustment. This macro sets coffsym to the
- symbol from the original file, and uses it to set the addend value
- correctly. If this is not a common symbol, the usual addend
- calculation is done, except that an additional tweak is needed for
- PC relative relocs.
- FIXME: This macro refers to symbols and asect; these are from the
- calling function, not the macro arguments. */
-
-#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
- { \
- coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
- if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
- coffsym = (obj_symbols (abfd) \
- + (cache_ptr->sym_ptr_ptr - symbols)); \
- else if (ptr) \
- coffsym = coff_symbol_from (abfd, ptr); \
- if (coffsym != (coff_symbol_type *) NULL \
- && coffsym->native->u.syment.n_scnum == 0) \
- cache_ptr->addend = - coffsym->native->u.syment.n_value; \
- else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
- && ptr->section != (asection *) NULL) \
- cache_ptr->addend = - (ptr->section->vma + ptr->value); \
- else \
- cache_ptr->addend = 0; \
+/* This macro is used in coffcode.h to get the howto corresponding to
+ an internal reloc. */
+
+#define RTYPE2HOWTO(relent, internal) \
+ ((relent)->howto = \
+ ((internal)->r_type < SH_COFF_HOWTO_COUNT \
+ ? &sh_coff_howtos[(internal)->r_type] \
+ : (reloc_howto_type *) NULL))
+
+/* This is the same as the macro in coffcode.h, except that it copies
+ r_offset into reloc_entry->addend for some relocs. */
+#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
+ { \
+ coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
+ if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
+ coffsym = (obj_symbols (abfd) \
+ + (cache_ptr->sym_ptr_ptr - symbols)); \
+ else if (ptr) \
+ coffsym = coff_symbol_from (abfd, ptr); \
+ if (coffsym != (coff_symbol_type *) NULL \
+ && coffsym->native->u.syment.n_scnum == 0) \
+ cache_ptr->addend = 0; \
+ else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
+ && ptr->section != (asection *) NULL) \
+ cache_ptr->addend = - (ptr->section->vma + ptr->value); \
+ else \
+ cache_ptr->addend = 0; \
+ if ((reloc).r_type == R_SH_SWITCH16 \
+ || (reloc).r_type == R_SH_SWITCH32 \
+ || (reloc).r_type == R_SH_USES \
+ || (reloc).r_type == R_SH_COUNT \
+ || (reloc).r_type == R_SH_ALIGN) \
+ cache_ptr->addend = (reloc).r_offset; \
}
-/* this function is in charge of performing all the 29k relocations */
+/* This is the howto function for the SH relocations. */
static bfd_reloc_status_type
sh_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd,
- error_message)
+ error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol_in;
bfd *output_bfd;
char **error_message;
{
- /* the consth relocation comes in two parts, we have to remember
- the state between calls, in these variables */
unsigned long insn;
- unsigned long sym_value;
+ bfd_vma sym_value;
unsigned short r_type;
+ bfd_vma addr = reloc_entry->address;
+ bfd_byte *hit_data = addr + (bfd_byte *) data;
- unsigned long addr = reloc_entry->address ; /*+ input_section->vma*/
- bfd_byte *hit_data =addr + (bfd_byte *)(data);
-
r_type = reloc_entry->howto->type;
- if (output_bfd) {
- /* Partial linking - do nothing */
- reloc_entry->address += input_section->output_offset;
+ if (output_bfd != NULL)
+ {
+ /* Partial linking--do nothing. */
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ /* Almost all relocs have to do with relaxing. If any work must be
+ done for them, it has been done in sh_relax_section. */
+ if (r_type != R_SH_IMM32
+ && (r_type != R_SH_PCDISP
+ || (symbol_in->flags & BSF_LOCAL) != 0))
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 */
- return (bfd_reloc_undefined);
- }
-
+ return bfd_reloc_undefined;
- sym_value = get_symbol_value(symbol_in);
+ sym_value = get_symbol_value (symbol_in);
- switch (r_type)
+ switch (r_type)
{
case R_SH_IMM32:
- insn = sym_value + reloc_entry->addend;
- insn += bfd_get_32 (abfd, hit_data);
- bfd_put_32(abfd, insn, hit_data);
+ insn = bfd_get_32 (abfd, hit_data);
+ insn += sym_value + reloc_entry->addend;
+ bfd_put_32 (abfd, insn, hit_data);
+ break;
+ case R_SH_PCDISP:
+ insn = bfd_get_16 (abfd, hit_data);
+ sym_value += reloc_entry->addend;
+ sym_value -= (input_section->output_section->vma
+ + input_section->output_offset
+ + addr
+ + 4);
+ sym_value += (insn & 0xfff) << 1;
+ if (insn & 0x800)
+ sym_value -= 0x1000;
+ insn = (insn & 0xf000) | (sym_value & 0xfff);
+ bfd_put_16 (abfd, insn, hit_data);
+ if (sym_value < -0x1000 || sym_value >= 0x1000)
+ return bfd_reloc_overflow;
break;
default:
- *error_message = "Unrecognized reloc";
- return (bfd_reloc_dangerous);
+ abort ();
+ break;
}
+ return bfd_reloc_ok;
+}
+
+/* We can do relaxing. */
+#define coff_bfd_relax_section sh_relax_section
+
+/* We use the special COFF backend linker. */
+#define coff_relocate_section sh_relocate_section
+
+/* When relaxing, we need to use special code to get the relocated
+ section contents. */
+#define coff_bfd_get_relocated_section_contents \
+ sh_coff_get_relocated_section_contents
+
+#include "coffcode.h"
+
+/* This function handles relaxing on the SH.
+
+ Function calls on the SH look like this:
+
+ movl L1,r0
+ ...
+ jsr @r0
+ ...
+ L1:
+ .long function
+
+ The compiler and assembler will cooperate to create R_SH_USES
+ relocs on the jsr instructions. The r_offset field of the
+ R_SH_USES reloc is the PC relative offset to the instruction which
+ loads the register (the r_offset field is computed as though it
+ were a jump instruction, so the offset value is actually from four
+ bytes past the instruction). The linker can use this reloc to
+ determine just which function is being called, and thus decide
+ whether it is possible to replace the jsr with a bsr.
+
+ If multiple function calls are all based on a single register load
+ (i.e., the same function is called multiple times), the compiler
+ guarantees that each function call will have an R_SH_USES reloc.
+ Therefore, if the linker is able to convert each R_SH_USES reloc
+ which refers to that address, it can safely eliminate the register
+ load.
+
+ When the assembler creates an R_SH_USES reloc, it examines it to
+ determine which address is being loaded (L1 in the above example).
+ It then counts the number of references to that address, and
+ creates an R_SH_COUNT reloc at that address. The r_offset field of
+ the R_SH_COUNT reloc will be the number of references. If the
+ linker is able to eliminate a register load, it can use the
+ R_SH_COUNT reloc to see whether it can also eliminate the function
+ address. */
+
+static boolean
+sh_relax_section (abfd, sec, link_info, again)
+ bfd *abfd;
+ asection *sec;
+ struct bfd_link_info *link_info;
+ boolean *again;
+{
+ struct internal_reloc *internal_relocs;
+ struct internal_reloc *free_relocs = NULL;
+ struct internal_reloc *irel, *irelend;
+ bfd_byte *contents = NULL;
+ bfd_byte *free_contents = NULL;
+
+ *again = false;
+
+ if (link_info->relocateable
+ || (sec->flags & SEC_RELOC) == 0
+ || sec->reloc_count == 0)
+ return true;
+
+ /* If this is the first time we have been called for this section,
+ initialize the cooked size. */
+ if (sec->_cooked_size == 0)
+ sec->_cooked_size = sec->_raw_size;
+
+ internal_relocs = (_bfd_coff_read_internal_relocs
+ (abfd, sec, link_info->keep_memory,
+ (bfd_byte *) NULL, false,
+ (struct internal_reloc *) NULL));
+ if (internal_relocs == NULL)
+ goto error_return;
+ if (! link_info->keep_memory)
+ free_relocs = internal_relocs;
+
+ irelend = internal_relocs + sec->reloc_count;
+ for (irel = internal_relocs; irel < irelend; irel++)
+ {
+ bfd_vma laddr, paddr, symval;
+ unsigned short insn;
+ struct internal_reloc *irelfn, *irelscan, *irelcount;
+ struct internal_syment sym;
+ bfd_signed_vma foff;
+
+ if (irel->r_type != R_SH_USES)
+ continue;
+
+ /* Get the section contents. */
+ if (contents == NULL)
+ {
+ if (coff_section_data (abfd, sec) != NULL
+ && coff_section_data (abfd, sec)->contents != NULL)
+ contents = coff_section_data (abfd, sec)->contents;
+ else
+ {
+ contents = (bfd_byte *) malloc (sec->_raw_size);
+ if (contents == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+ free_contents = contents;
+
+ if (! bfd_get_section_contents (abfd, sec, contents,
+ (file_ptr) 0, sec->_raw_size))
+ goto error_return;
+ }
+ }
+
+ /* The r_offset field of the R_SH_USES reloc will point us to
+ the register load. The 4 is because the r_offset field is
+ computed as though it were a jump offset, which are based
+ from 4 bytes after the jump instruction. */
+ laddr = irel->r_vaddr - sec->vma + 4 + irel->r_offset;
+ if (laddr >= sec->_raw_size)
+ {
+ (*_bfd_error_handler) ("%s: 0x%lx: warning: bad R_SH_USES offset",
+ bfd_get_filename (abfd),
+ (unsigned long) irel->r_vaddr);
+ continue;
+ }
+ insn = bfd_get_16 (abfd, contents + laddr);
+
+ /* If the instruction is not mov.l NN,rN, we don't know what to
+ do. */
+ if ((insn & 0xf000) != 0xd000)
+ {
+ ((*_bfd_error_handler)
+ ("%s: 0x%lx: warning: R_SH_USES points to unrecognized insn 0x%x",
+ bfd_get_filename (abfd), (unsigned long) irel->r_vaddr, insn));
+ continue;
+ }
+
+ /* Get the address from which the register is being loaded. The
+ displacement in the mov.l instruction is quadrupled. It is a
+ displacement from four bytes after the movl instruction, but,
+ before adding in the PC address, two least significant bits
+ of the PC are cleared. We assume that the section is aligned
+ on a four byte boundary. */
+ paddr = insn & 0xff;
+ paddr *= 4;
+ paddr += (laddr + 4) &~ 3;
+ if (paddr >= sec->_raw_size)
+ {
+ ((*_bfd_error_handler)
+ ("%s: 0x%lx: warning: bad R_SH_USES load offset",
+ bfd_get_filename (abfd), (unsigned long) irel->r_vaddr));
+ continue;
+ }
+
+ /* Get the reloc for the address from which the register is
+ being loaded. This reloc will tell us which function is
+ actually being called. */
+ paddr += sec->vma;
+ for (irelfn = internal_relocs; irelfn < irelend; irelfn++)
+ if (irelfn->r_vaddr == paddr
+ && irelfn->r_type == R_SH_IMM32)
+ break;
+ if (irelfn >= irelend)
+ {
+ ((*_bfd_error_handler)
+ ("%s: 0x%lx: warning: could not find expected reloc",
+ bfd_get_filename (abfd), (unsigned long) paddr));
+ continue;
+ }
+
+ /* Get the value of the symbol referred to by the reloc. */
+ if (! _bfd_coff_get_external_symbols (abfd))
+ goto error_return;
+ bfd_coff_swap_sym_in (abfd,
+ ((bfd_byte *) obj_coff_external_syms (abfd)
+ + (irelfn->r_symndx
+ * bfd_coff_symesz (abfd))),
+ &sym);
+ if (sym.n_scnum != 0 && sym.n_scnum != sec->target_index)
+ {
+ ((*_bfd_error_handler)
+ ("%s: 0x%lx: warning: symbol in unexpected section",
+ bfd_get_filename (abfd), (unsigned long) paddr));
+ continue;
+ }
+
+ if (sym.n_sclass != C_EXT)
+ {
+ symval = (sym.n_value
+ - sec->vma
+ + sec->output_section->vma
+ + sec->output_offset);
+ }
+ else
+ {
+ struct coff_link_hash_entry *h;
- return(bfd_reloc_ok);
+ h = obj_coff_sym_hashes (abfd)[irelfn->r_symndx];
+ BFD_ASSERT (h != NULL);
+ if (h->root.type != bfd_link_hash_defined
+ && h->root.type != bfd_link_hash_defweak)
+ {
+ /* This appears to be a reference to an undefined
+ symbol. Just ignore it--it will be caught by the
+ regular reloc processing. */
+ continue;
+ }
+
+ symval = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ }
+
+ symval += bfd_get_32 (abfd, contents + paddr - sec->vma);
+
+ /* See if this function call can be shortened. */
+ foff = (symval
+ - (irel->r_vaddr
+ - sec->vma
+ + sec->output_section->vma
+ + sec->output_offset
+ + 4));
+ if (foff < -0x1000 || foff >= 0x1000)
+ {
+ /* After all that work, we can't shorten this function call. */
+ continue;
+ }
+
+ /* Shorten the function call. */
+
+ /* For simplicity of coding, we are going to modify the section
+ contents, the section relocs, and the BFD symbol table. We
+ must tell the rest of the code not to free up this
+ information. It would be possible to instead create a table
+ of changes which have to be made, as is done in coff-mips.c;
+ that would be more work, but would require less memory when
+ the linker is run. */
+
+ if (coff_section_data (abfd, sec) == NULL)
+ {
+ sec->used_by_bfd =
+ ((struct coff_section_tdata *)
+ bfd_zalloc (abfd, sizeof (struct coff_section_tdata)));
+ if (sec->used_by_bfd == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+ }
+
+ coff_section_data (abfd, sec)->relocs = internal_relocs;
+ coff_section_data (abfd, sec)->keep_relocs = true;
+ free_relocs = NULL;
+
+ coff_section_data (abfd, sec)->contents = contents;
+ coff_section_data (abfd, sec)->keep_contents = true;
+ free_contents = NULL;
+
+ obj_coff_keep_syms (abfd) = true;
+
+ /* Replace the jsr with a bsr. */
+
+ /* Change the R_SH_USES reloc into an R_SH_PCDISP reloc, and
+ replace the jsr with a bsr. */
+ irel->r_type = R_SH_PCDISP;
+ irel->r_symndx = irelfn->r_symndx;
+ if (sym.n_sclass != C_EXT)
+ {
+ /* If this needs to be changed because of future relaxing,
+ it will be handled here like other internal PCDISP
+ relocs. */
+ bfd_put_16 (abfd,
+ 0xb000 | ((foff >> 1) & 0xfff),
+ contents + irel->r_vaddr - sec->vma);
+ }
+ else
+ {
+ /* We can't fully resolve this yet, because the external
+ symbol value may be changed by future relaxing. We let
+ the final link phase handle it. */
+ bfd_put_16 (abfd, 0xb000, contents + irel->r_vaddr - sec->vma);
+ }
+
+ /* See if there is another R_SH_USES reloc referring to the same
+ register load. */
+ for (irelscan = internal_relocs; irelscan < irelend; irelscan++)
+ if (irelscan->r_type == R_SH_USES
+ && laddr == irelscan->r_vaddr - sec->vma + 4 + irelscan->r_offset)
+ break;
+ if (irelscan < irelend)
+ {
+ /* Some other function call depends upon this register load,
+ and we have not yet converted that function call.
+ Indeed, we may never be able to convert it. There is
+ nothing else we can do at this point. */
+ continue;
+ }
+
+ /* Look for a R_SH_COUNT reloc on the location where the
+ function address is stored. Do this before deleting any
+ bytes, to avoid confusion about the address. */
+ for (irelcount = internal_relocs; irelcount < irelend; irelcount++)
+ if (irelcount->r_vaddr == paddr
+ && irelcount->r_type == R_SH_COUNT)
+ break;
+
+ /* Delete the register load. */
+ if (! sh_relax_delete_bytes (abfd, sec, laddr, 2))
+ goto error_return;
+
+ /* That will change things, so, just in case it permits some
+ other function call to come within range, we should relax
+ again. Note that this is not required, and it may be slow. */
+ *again = true;
+
+ /* Now check whether we got a COUNT reloc. */
+ if (irelcount >= irelend)
+ {
+ ((*_bfd_error_handler)
+ ("%s: 0x%lx: warning: could not find expected COUNT reloc",
+ bfd_get_filename (abfd), (unsigned long) paddr));
+ continue;
+ }
+
+ /* The number of uses is stored in the r_offset field. We've
+ just deleted one. */
+ if (irelcount->r_offset == 0)
+ {
+ ((*_bfd_error_handler) ("%s: 0x%lx: warning: bad count",
+ bfd_get_filename (abfd),
+ (unsigned long) paddr));
+ continue;
+ }
+
+ --irelcount->r_offset;
+
+ /* If there are no more uses, we can delete the address. Reload
+ the address from irelfn, in case it was changed by the
+ previous call to sh_relax_delete_bytes. */
+ if (irelcount->r_offset == 0)
+ {
+ if (! sh_relax_delete_bytes (abfd, sec,
+ irelfn->r_vaddr - sec->vma, 4))
+ goto error_return;
+ }
+
+ /* We've done all we can with that function call. */
+ }
+
+ if (free_relocs != NULL)
+ {
+ free (free_relocs);
+ free_relocs = NULL;
+ }
+
+ if (free_contents != NULL)
+ {
+ if (! link_info->keep_memory)
+ free (free_contents);
+ else
+ {
+ /* Cache the section contents for coff_link_input_bfd. */
+ if (coff_section_data (abfd, sec) == NULL)
+ {
+ sec->used_by_bfd =
+ ((struct coff_section_tdata *)
+ bfd_zalloc (abfd, sizeof (struct coff_section_tdata)));
+ if (sec->used_by_bfd == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+ coff_section_data (abfd, sec)->relocs = NULL;
+ }
+ coff_section_data (abfd, sec)->contents = contents;
+ }
+ }
+
+ return true;
+
+ error_return:
+ if (free_relocs != NULL)
+ free (free_relocs);
+ if (free_contents != NULL)
+ free (free_contents);
+ return false;
}
-/* The reloc processing routine for the optimized COFF linker. */
+/* Delete some bytes from a section while relaxing. */
static boolean
-coff_sh_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, syms, sections)
+sh_relax_delete_bytes (abfd, sec, addr, count)
+ bfd *abfd;
+ asection *sec;
+ bfd_vma addr;
+ int count;
+{
+ bfd_byte *contents;
+ struct internal_reloc *irel, *irelend;
+ struct internal_reloc *irelalign;
+ bfd_vma toaddr;
+ bfd_byte *esym, *esymend;
+ bfd_size_type symesz;
+ struct coff_link_hash_entry **sym_hash;
+ asection *o;
+
+ contents = coff_section_data (abfd, sec)->contents;
+
+ /* The deletion must stop at the next ALIGN reloc for an aligment
+ power larger than the number of bytes we are deleting. */
+
+ irelalign = NULL;
+ toaddr = sec->_cooked_size;
+
+ irel = coff_section_data (abfd, sec)->relocs;
+ irelend = irel + sec->reloc_count;
+ for (; irel < irelend; irel++)
+ {
+ if (irel->r_type == R_SH_ALIGN
+ && irel->r_vaddr - sec->vma > addr
+ && count < (1 << irel->r_offset))
+ {
+ irelalign = irel;
+ toaddr = irel->r_vaddr - sec->vma;
+ break;
+ }
+ }
+
+ /* Actually delete the bytes. */
+ memmove (contents + addr, contents + addr + count, toaddr - addr - count);
+ if (irelalign == NULL)
+ sec->_cooked_size -= count;
+ else
+ memset (contents + toaddr - count, 0, count);
+
+ /* Adjust all the relocs. */
+ for (irel = coff_section_data (abfd, sec)->relocs; irel < irelend; irel++)
+ {
+ bfd_vma nraddr, start, stop;
+ int insn = 0;
+ struct internal_syment sym;
+ int off, adjust, oinsn;
+ bfd_signed_vma voff;
+ boolean overflow;
+
+ /* Get the new reloc address. */
+ nraddr = irel->r_vaddr - sec->vma;
+ if ((irel->r_vaddr - sec->vma > addr
+ && irel->r_vaddr - sec->vma < toaddr)
+ || (irel->r_type == R_SH_ALIGN
+ && irel->r_vaddr - sec->vma == toaddr))
+ nraddr -= count;
+
+ /* See if this reloc was for the bytes we have deleted, in which
+ case we no longer care about it. */
+ if (irel->r_vaddr - sec->vma >= addr
+ && irel->r_vaddr - sec->vma < addr + count
+ && irel->r_type != R_SH_ALIGN)
+ irel->r_type = R_SH_UNUSED;
+
+ /* If this is a PC relative reloc, see if the range it covers
+ includes the bytes we have deleted. */
+ switch (irel->r_type)
+ {
+ default:
+ break;
+
+ case R_SH_PCDISP8BY2:
+ case R_SH_PCDISP:
+ case R_SH_PCRELIMM8BY2:
+ case R_SH_PCRELIMM8BY4:
+ start = irel->r_vaddr - sec->vma;
+ insn = bfd_get_16 (abfd, contents + nraddr);
+ break;
+ }
+
+ switch (irel->r_type)
+ {
+ default:
+ start = stop = addr;
+ break;
+
+ case R_SH_IMM32:
+ /* If this reloc is against a symbol defined in this
+ section, and the symbol will not be adjusted below, we
+ must check the addend to see it will put the value in
+ range to be adjusted, and hence must be changed. */
+ bfd_coff_swap_sym_in (abfd,
+ ((bfd_byte *) obj_coff_external_syms (abfd)
+ + (irel->r_symndx
+ * bfd_coff_symesz (abfd))),
+ &sym);
+ if (sym.n_sclass != C_EXT
+ && sym.n_scnum == sec->target_index
+ && (sym.n_value < addr
+ || sym.n_value >= toaddr))
+ {
+ bfd_vma val;
+
+ val = bfd_get_32 (abfd, contents + nraddr);
+ val += sym.n_value;
+ if (val >= addr && val < toaddr)
+ bfd_put_32 (abfd, val - count, contents + nraddr);
+ }
+ start = stop = addr;
+ break;
+
+ case R_SH_PCDISP8BY2:
+ off = insn & 0xff;
+ if (off & 0x80)
+ off -= 0x100;
+ stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
+ break;
+
+ case R_SH_PCDISP:
+ bfd_coff_swap_sym_in (abfd,
+ ((bfd_byte *) obj_coff_external_syms (abfd)
+ + (irel->r_symndx
+ * bfd_coff_symesz (abfd))),
+ &sym);
+ if (sym.n_sclass == C_EXT)
+ start = stop = addr;
+ else
+ {
+ off = insn & 0xfff;
+ if (off & 0x800)
+ off -= 0x1000;
+ stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
+ }
+ break;
+
+ case R_SH_PCRELIMM8BY2:
+ off = insn & 0xff;
+ stop = start + 4 + off * 2;
+ break;
+
+ case R_SH_PCRELIMM8BY4:
+ off = insn & 0xff;
+ stop = (start &~ (bfd_vma) 3) + 4 + off * 4;
+ break;
+
+ case R_SH_SWITCH16:
+ case R_SH_SWITCH32:
+ /* These relocs types represent
+ .word L2-L1
+ The r_offset field holds the difference between the reloc
+ address and L1. That is the start of the reloc, and
+ adding in the contents gives us the top. We must adjust
+ both the r_offset field and the section contents. */
+
+ start = irel->r_vaddr - sec->vma;
+ stop = (bfd_vma) ((bfd_signed_vma) start - (long) irel->r_offset);
+
+ if (start > addr
+ && start < toaddr
+ && (stop <= addr || stop >= toaddr))
+ irel->r_offset += count;
+ else if (stop > addr
+ && stop < toaddr
+ && (start <= addr || start >= toaddr))
+ irel->r_offset -= count;
+
+ start = stop;
+
+ if (irel->r_type == R_SH_SWITCH16)
+ voff = bfd_get_signed_16 (abfd, contents + nraddr);
+ else
+ voff = bfd_get_signed_32 (abfd, contents + nraddr);
+ stop = (bfd_vma) ((bfd_signed_vma) start + voff);
+
+ break;
+
+ case R_SH_USES:
+ start = irel->r_vaddr - sec->vma;
+ stop = (bfd_vma) ((bfd_signed_vma) start + (long) irel->r_offset);
+ break;
+ }
+
+ if (start > addr
+ && start < toaddr
+ && (stop <= addr || stop >= toaddr))
+ adjust = count;
+ else if (stop > addr
+ && stop < toaddr
+ && (start <= addr || start >= toaddr))
+ adjust = - count;
+ else
+ adjust = 0;
+
+ if (adjust != 0)
+ {
+ oinsn = insn;
+ overflow = false;
+ switch (irel->r_type)
+ {
+ default:
+ abort ();
+ break;
+
+ case R_SH_PCDISP8BY2:
+ case R_SH_PCRELIMM8BY2:
+ insn += adjust / 2;
+ if ((oinsn & 0xff00) != (insn & 0xff00))
+ overflow = true;
+ bfd_put_16 (abfd, insn, contents + nraddr);
+ break;
+
+ case R_SH_PCDISP:
+ insn += adjust / 2;
+ if ((oinsn & 0xf000) != (insn & 0xf000))
+ overflow = true;
+ bfd_put_16 (abfd, insn, contents + nraddr);
+ break;
+
+ case R_SH_PCRELIMM8BY4:
+ BFD_ASSERT (adjust == count || count >= 4);
+ if (count >= 4)
+ insn += adjust / 4;
+ else
+ {
+ if ((irel->r_vaddr & 3) == 0)
+ ++insn;
+ }
+ if ((oinsn & 0xff00) != (insn & 0xff00))
+ overflow = true;
+ bfd_put_16 (abfd, insn, contents + nraddr);
+ break;
+
+ case R_SH_SWITCH16:
+ voff += adjust;
+ if (voff < - 0x8000 || voff >= 0x8000)
+ overflow = true;
+ bfd_put_signed_16 (abfd, voff, contents + nraddr);
+ break;
+
+ case R_SH_SWITCH32:
+ voff += adjust;
+ bfd_put_signed_32 (abfd, voff, contents + nraddr);
+ break;
+
+ case R_SH_USES:
+ irel->r_offset += adjust;
+ break;
+ }
+
+ if (overflow)
+ {
+ ((*_bfd_error_handler)
+ ("%s: 0x%lx: fatal: reloc overflow while relaxing",
+ bfd_get_filename (abfd), (unsigned long) irel->r_vaddr));
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ }
+
+ irel->r_vaddr = nraddr + sec->vma;
+ }
+
+ /* Look through all the other sections. If there contain any IMM32
+ relocs against internal symbols which we are not going to adjust
+ below, we may need to adjust the addends. */
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ struct internal_reloc *internal_relocs;
+ struct internal_reloc *irelscan, *irelscanend;
+ bfd_byte *ocontents;
+
+ if (o == sec
+ || (o->flags & SEC_RELOC) == 0
+ || o->reloc_count == 0)
+ continue;
+
+ /* We always cache the relocs. Perhaps, if info->keep_memory is
+ false, we should free them, if we are permitted to, when we
+ leave sh_coff_relax_section. */
+ internal_relocs = (_bfd_coff_read_internal_relocs
+ (abfd, o, true, (bfd_byte *) NULL, false,
+ (struct internal_reloc *) NULL));
+ if (internal_relocs == NULL)
+ return false;
+
+ ocontents = NULL;
+ irelscanend = internal_relocs + o->reloc_count;
+ for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++)
+ {
+ struct internal_syment sym;
+
+ if (irelscan->r_type != R_SH_IMM32)
+ continue;
+
+ bfd_coff_swap_sym_in (abfd,
+ ((bfd_byte *) obj_coff_external_syms (abfd)
+ + (irelscan->r_symndx
+ * bfd_coff_symesz (abfd))),
+ &sym);
+ if (sym.n_sclass != C_EXT
+ && sym.n_scnum == sec->target_index
+ && (sym.n_value < addr
+ || sym.n_value >= toaddr))
+ {
+ bfd_vma val;
+
+ if (ocontents == NULL)
+ {
+ if (coff_section_data (abfd, o)->contents != NULL)
+ ocontents = coff_section_data (abfd, o)->contents;
+ else
+ {
+ /* We always cache the section contents.
+ Perhaps, if info->keep_memory is false, we
+ should free them, if we are permitted to,
+ when we leave sh_coff_relax_section. */
+ ocontents = (bfd_byte *) malloc (o->_raw_size);
+ if (ocontents == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ if (! bfd_get_section_contents (abfd, o, ocontents,
+ (file_ptr) 0,
+ o->_raw_size))
+ return false;
+ coff_section_data (abfd, o)->contents = ocontents;
+ }
+ }
+
+ val = bfd_get_32 (abfd, ocontents + irelscan->r_vaddr - o->vma);
+ val += sym.n_value;
+ if (val >= addr && val < toaddr)
+ bfd_put_32 (abfd, val - count,
+ ocontents + irelscan->r_vaddr - o->vma);
+
+ coff_section_data (abfd, o)->keep_contents = true;
+ }
+ }
+ }
+
+ /* Adjusting the internal symbols will not work if something has
+ already retrieved the generic symbols. It would be possible to
+ make this work by adjusting the generic symbols at the same time.
+ However, this case should not arise in normal usage. */
+ if (obj_symbols (abfd) != NULL
+ || obj_raw_syments (abfd) != NULL)
+ {
+ ((*_bfd_error_handler)
+ ("%s: fatal: generic symbols retrieved before relaxing",
+ bfd_get_filename (abfd)));
+ bfd_set_error (bfd_error_invalid_operation);
+ return false;
+ }
+
+ /* Adjust all the symbols. */
+ sym_hash = obj_coff_sym_hashes (abfd);
+ symesz = bfd_coff_symesz (abfd);
+ esym = (bfd_byte *) obj_coff_external_syms (abfd);
+ esymend = esym + obj_raw_syment_count (abfd) * symesz;
+ while (esym < esymend)
+ {
+ struct internal_syment isym;
+
+ bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &isym);
+
+ if (isym.n_scnum == sec->target_index
+ && isym.n_value >= addr
+ && isym.n_value < toaddr)
+ {
+ isym.n_value -= count;
+
+ bfd_coff_swap_sym_out (abfd, (PTR) &isym, (PTR) esym);
+
+ if (*sym_hash != NULL)
+ {
+ BFD_ASSERT ((*sym_hash)->root.type == bfd_link_hash_defined
+ || (*sym_hash)->root.type == bfd_link_hash_defweak);
+ BFD_ASSERT ((*sym_hash)->root.u.def.value >= addr
+ && (*sym_hash)->root.u.def.value < toaddr);
+ (*sym_hash)->root.u.def.value -= count;
+ }
+ }
+
+ esym += (isym.n_numaux + 1) * symesz;
+ sym_hash += isym.n_numaux + 1;
+ }
+
+ /* See if we can move the ALIGN reloc forward. We have adjusted
+ r_vaddr for it already. */
+ if (irelalign != NULL)
+ {
+ bfd_vma alignaddr;
+
+ alignaddr = BFD_ALIGN (irelalign->r_vaddr - sec->vma,
+ 1 << irelalign->r_offset);
+ if (alignaddr != toaddr)
+ {
+ /* Tail recursion. */
+ return sh_relax_delete_bytes (abfd, sec,
+ irelalign->r_vaddr - sec->vma,
+ 1 << irelalign->r_offset);
+ }
+ }
+
+ return true;
+}
+
+/* This is a modification of _bfd_coff_generic_relocate_section, which
+ will handle SH relaxing. */
+
+static boolean
+sh_relocate_section (output_bfd, info, input_bfd, input_section, contents,
+ relocs, syms, sections)
bfd *output_bfd;
struct bfd_link_info *info;
bfd *input_bfd;
struct internal_reloc *rel;
struct internal_reloc *relend;
- /* 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;
-
-
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 addend;
bfd_vma val;
+ reloc_howto_type *howto;
+ bfd_reloc_status_type rstat;
+
+ /* Almost all relocs have to do with relaxing. If any work must
+ be done for them, it has been done in sh_relax_section. */
+ if (rel->r_type != R_SH_IMM32
+ && rel->r_type != R_SH_PCDISP)
+ continue;
symndx = rel->r_symndx;
- loc = contents + rel->r_vaddr - input_section->vma;
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;
+ if (sym != NULL && sym->n_scnum != 0)
+ addend = - sym->n_value;
+ else
+ addend = 0;
+ if (rel->r_type == R_SH_PCDISP)
+ addend -= 4;
+
+ if (rel->r_type >= SH_COFF_HOWTO_COUNT)
+ howto = NULL;
+ else
+ howto = &sh_coff_howtos[rel->r_type];
+
+ if (howto == NULL)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ val = 0;
if (h == NULL)
{
+ asection *sec;
+
+ /* There is nothing to do for an internal PCDISP reloc. */
+ if (rel->r_type == R_SH_PCDISP)
+ continue;
+
if (symndx == -1)
- sec = bfd_abs_section_ptr;
+ {
+ sec = bfd_abs_section_ptr;
+ val = 0;
+ }
else
{
- sym = syms + symndx;
sec = sections[symndx];
- val = (sec->output_section->vma
+ val = (sec->output_section->vma
+ sec->output_offset
+ sym->n_value
- sec->vma);
}
else
{
- if (h->root.type == bfd_link_hash_defined)
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
{
+ asection *sec;
+
sec = h->root.u.def.section;
val = (h->root.u.def.value
+ sec->output_section->vma
+ sec->output_offset);
}
- else
+ else if (! info->relocateable)
{
if (! ((*info->callbacks->undefined_symbol)
(info, h->root.root.string, input_bfd, input_section,
}
}
- switch (rel->r_type)
+ rstat = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents,
+ rel->r_vaddr - input_section->vma,
+ val, addend);
+
+ switch (rstat)
{
default:
- bfd_set_error (bfd_error_bad_value);
- return false;
-
- case R_SH_IMM32:
+ abort ();
+ case bfd_reloc_ok:
+ break;
+ case bfd_reloc_overflow:
{
- long x = bfd_get_32 (input_bfd, loc);
- x += val;
- bfd_put_32 (input_bfd, x, loc);
+ const char *name;
+ char buf[SYMNMLEN + 1];
- }
+ if (symndx == -1)
+ name = "*ABS*";
+ else if (h != NULL)
+ name = h->root.root.string;
+ 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;
+ }
- break;
+ 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;
}
-#define coff_relocate_section coff_sh_relocate_section
-#include "coffcode.h"
+/* This is a version of bfd_generic_get_relocated_section_contents
+ which uses sh_relocate_section. */
+
+static bfd_byte *
+sh_coff_get_relocated_section_contents (output_bfd, link_info, link_order,
+ data, relocateable, symbols)
+ bfd *output_bfd;
+ struct bfd_link_info *link_info;
+ struct bfd_link_order *link_order;
+ bfd_byte *data;
+ boolean relocateable;
+ asymbol **symbols;
+{
+ asection *input_section = link_order->u.indirect.section;
+ bfd *input_bfd = input_section->owner;
+ asection **sections = NULL;
+ struct internal_reloc *internal_relocs = NULL;
+ struct internal_syment *internal_syms = NULL;
+
+ /* We only need to handle the case of relaxing, or of having a
+ particular set of section contents, specially. */
+ if (relocateable
+ || coff_section_data (input_bfd, input_section) == NULL
+ || coff_section_data (input_bfd, input_section)->contents == NULL)
+ return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
+ link_order, data,
+ relocateable,
+ symbols);
+
+ memcpy (data, coff_section_data (input_bfd, input_section)->contents,
+ input_section->_raw_size);
+
+ if ((input_section->flags & SEC_RELOC) != 0
+ && input_section->reloc_count > 0)
+ {
+ bfd_size_type symesz = bfd_coff_symesz (input_bfd);
+ bfd_byte *esym, *esymend;
+ struct internal_syment *isymp;
+ asection **secpp;
+
+ if (! _bfd_coff_get_external_symbols (input_bfd))
+ goto error_return;
+
+ internal_relocs = (_bfd_coff_read_internal_relocs
+ (input_bfd, input_section, false, (bfd_byte *) NULL,
+ false, (struct internal_reloc *) NULL));
+ if (internal_relocs == NULL)
+ goto error_return;
+
+ internal_syms = ((struct internal_syment *)
+ malloc (obj_raw_syment_count (input_bfd)
+ * sizeof (struct internal_syment)));
+ if (internal_syms == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+
+ sections = (asection **) malloc (obj_raw_syment_count (input_bfd)
+ * sizeof (asection *));
+ if (sections == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+
+ isymp = internal_syms;
+ secpp = sections;
+ esym = (bfd_byte *) obj_coff_external_syms (input_bfd);
+ esymend = esym + obj_raw_syment_count (input_bfd) * symesz;
+ while (esym < esymend)
+ {
+ bfd_coff_swap_sym_in (input_bfd, (PTR) esym, (PTR) isymp);
+
+ if (isymp->n_scnum != 0)
+ *secpp = coff_section_from_bfd_index (input_bfd, isymp->n_scnum);
+ else
+ {
+ if (isymp->n_value == 0)
+ *secpp = bfd_und_section_ptr;
+ else
+ *secpp = bfd_com_section_ptr;
+ }
+
+ esym += (isymp->n_numaux + 1) * symesz;
+ secpp += isymp->n_numaux + 1;
+ isymp += isymp->n_numaux + 1;
+ }
+
+ if (! sh_relocate_section (output_bfd, link_info, input_bfd,
+ input_section, data, internal_relocs,
+ internal_syms, sections))
+ goto error_return;
+
+ free (sections);
+ sections = NULL;
+ free (internal_syms);
+ internal_syms = NULL;
+ free (internal_relocs);
+ internal_relocs = NULL;
+ }
+
+ return data;
+
+ error_return:
+ if (internal_relocs != NULL)
+ free (internal_relocs);
+ if (internal_syms != NULL)
+ free (internal_syms);
+ if (sections != NULL)
+ free (sections);
+ return NULL;
+}
+
+/* The target vectors. */
const bfd_target shcoff_vec =
{
(HAS_RELOC | EXEC_P | /* object flags */
HAS_LINENO | HAS_DEBUG |
- HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE ),
+ HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE),
- (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
+ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC),
'_', /* leading symbol underscore */
'/', /* ar_pad_char */
15, /* ar_max_namelen */
2, /* minimum section alignment */
- 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_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_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_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_dummy_target, coff_object_p, /* bfd_check_format */
bfd_generic_archive_p, _bfd_dummy_target},
{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
bfd_false},
- {bfd_false, coff_write_object_contents, /* bfd_write_contents */
+ {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_ARCHIVE (_bfd_archive_coff),
- BFD_JUMP_TABLE_SYMBOLS (coff),
- BFD_JUMP_TABLE_RELOCS (coff),
- BFD_JUMP_TABLE_WRITE (coff),
- BFD_JUMP_TABLE_LINK (coff),
- BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
-
- COFF_SWAP_TABLE,
+ BFD_JUMP_TABLE_GENERIC (coff),
+ BFD_JUMP_TABLE_COPY (coff),
+ BFD_JUMP_TABLE_CORE (_bfd_nocore),
+ BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
+ BFD_JUMP_TABLE_SYMBOLS (coff),
+ BFD_JUMP_TABLE_RELOCS (coff),
+ BFD_JUMP_TABLE_WRITE (coff),
+ BFD_JUMP_TABLE_LINK (coff),
+ BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+
+ COFF_SWAP_TABLE,
};
const bfd_target shlcoff_vec =
(HAS_RELOC | EXEC_P | /* object flags */
HAS_LINENO | HAS_DEBUG |
- HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE ),
+ HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE),
- (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
+ (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC),
'_', /* leading symbol underscore */
'/', /* ar_pad_char */
15, /* ar_max_namelen */
2, /* minimum section alignment */
- 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 */
-
-/* Note that we use a special archive recognizer.
- This is so that we only use one archive format for both
- object file types */
+ 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 */
+
+ /* Note that we use a special archive recognizer.
+ This is so that we only use one archive format for both
+ object file types */
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
_bfd_dummy_target, _bfd_dummy_target},
{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
bfd_false},
- {bfd_false, coff_write_object_contents, /* bfd_write_contents */
+ {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_ARCHIVE (_bfd_archive_coff),
- BFD_JUMP_TABLE_SYMBOLS (coff),
- BFD_JUMP_TABLE_RELOCS (coff),
- BFD_JUMP_TABLE_WRITE (coff),
- BFD_JUMP_TABLE_LINK (coff),
- BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
-
- COFF_SWAP_TABLE,
-};
+ BFD_JUMP_TABLE_GENERIC (coff),
+ BFD_JUMP_TABLE_COPY (coff),
+ BFD_JUMP_TABLE_CORE (_bfd_nocore),
+ BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
+ BFD_JUMP_TABLE_SYMBOLS (coff),
+ BFD_JUMP_TABLE_RELOCS (coff),
+ BFD_JUMP_TABLE_WRITE (coff),
+ BFD_JUMP_TABLE_LINK (coff),
+ BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
+ COFF_SWAP_TABLE,
+};
projects / thirdparty / binutils-gdb.git / commitdiff
