#include "sysdep.h"
#include "libbfd.h"
#include "elf-bfd.h"
+#include "opcode/sparc.h"
/* This is defined if one wants to build upward compatible binaries
with the original sparc64-elf toolchain. The support is kept in for
static boolean sparc64_elf_merge_private_bfd_data
PARAMS ((bfd *, bfd *));
+static boolean sparc64_elf_relax_section
+ PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
static boolean sparc64_elf_relocate_section
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
static reloc_howto_type *
sparc64_elf_reloc_type_lookup (abfd, code)
- bfd *abfd;
+ bfd *abfd ATTRIBUTE_UNUSED;
bfd_reloc_code_real_type code;
{
unsigned int i;
static void
sparc64_elf_info_to_howto (abfd, cache_ptr, dst)
- bfd *abfd;
+ bfd *abfd ATTRIBUTE_UNUSED;
arelent *cache_ptr;
Elf64_Internal_Rela *dst;
{
static long
sparc64_elf_get_reloc_upper_bound (abfd, sec)
- bfd *abfd;
+ bfd *abfd ATTRIBUTE_UNUSED;
asection *sec;
{
return (sec->reloc_count * 2 + 1) * sizeof (arelent *);
asymbol **symbols;
boolean dynamic;
{
- struct elf_backend_data * const ebd = get_elf_backend_data (abfd);
PTR allocated = NULL;
bfd_byte *native_relocs;
arelent *relent;
for (idx = 0; idx < sec->reloc_count; idx++)
{
bfd_vma addr;
- unsigned int i;
++count;
input_section,
output_bfd,
error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- char **error_message;
+ bfd *abfd ATTRIBUTE_UNUSED;
+ arelent *reloc_entry ATTRIBUTE_UNUSED;
+ asymbol *symbol ATTRIBUTE_UNUSED;
+ PTR data ATTRIBUTE_UNUSED;
+ asection *input_section ATTRIBUTE_UNUSED;
+ bfd *output_bfd ATTRIBUTE_UNUSED;
+ char **error_message ATTRIBUTE_UNUSED;
{
return bfd_reloc_notsupported;
}
PTR data;
asection *input_section;
bfd *output_bfd;
- char **error_message;
+ char **error_message ATTRIBUTE_UNUSED;
{
bfd_vma relocation;
bfd_vma insn;
PTR data;
asection *input_section;
bfd *output_bfd;
- char **error_message;
+ char **error_message ATTRIBUTE_UNUSED;
{
bfd_vma relocation;
bfd_vma insn;
PTR data;
asection *input_section;
bfd *output_bfd;
- char **error_message;
+ char **error_message ATTRIBUTE_UNUSED;
{
bfd_vma relocation;
bfd_vma insn;
struct bfd_link_info *info;
const Elf_Internal_Sym *sym;
const char **namep;
- flagword *flagsp;
- asection **secp;
- bfd_vma *valp;
+ flagword *flagsp ATTRIBUTE_UNUSED;
+ asection **secp ATTRIBUTE_UNUSED;
+ bfd_vma *valp ATTRIBUTE_UNUSED;
{
static char *stt_types[] = { "NOTYPE", "OBJECT", "FUNCTION" };
static boolean
sparc64_elf_output_arch_syms (output_bfd, info, finfo, func)
- bfd *output_bfd;
+ bfd *output_bfd ATTRIBUTE_UNUSED;
struct bfd_link_info *info;
PTR finfo;
boolean (*func) PARAMS ((PTR, const char *,
static void
sparc64_elf_symbol_processing (abfd, asym)
- bfd *abfd;
+ bfd *abfd ATTRIBUTE_UNUSED;
asymbol *asym;
{
elf_symbol_type *elfsym;
return true;
}
\f
+#define SET_SEC_DO_RELAX(section) do { elf_section_data(section)->tdata = (void *)1; } while (0)
+#define SEC_DO_RELAX(section) (elf_section_data(section)->tdata == (void *)1)
+
+/*ARGSUSED*/
+static boolean
+sparc64_elf_relax_section (abfd, section, link_info, again)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ asection *section ATTRIBUTE_UNUSED;
+ struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
+ boolean *again;
+{
+ *again = false;
+ SET_SEC_DO_RELAX (section);
+ return true;
+}
+\f
/* Relocate a SPARC64 ELF section. */
static boolean
{
int r_type;
reloc_howto_type *howto;
- long r_symndx;
+ unsigned long r_symndx;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
asection *sec;
relocation = (splt->output_section->vma
+ splt->output_offset
+ sparc64_elf_plt_entry_offset (h->plt.offset));
+ if (r_type == R_SPARC_WPLT30)
+ goto do_wplt30;
goto do_default;
case R_SPARC_OLO10:
}
break;
+ case R_SPARC_WDISP30:
+ do_wplt30:
+ if (SEC_DO_RELAX (input_section)
+ && rel->r_offset + 4 < input_section->_raw_size)
+ {
+#define G0 0
+#define O7 15
+#define XCC (2 << 20)
+#define COND(x) (((x)&0xf)<<25)
+#define CONDA COND(0x8)
+#define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
+#define INSN_BA (F2(0,2) | CONDA)
+#define INSN_OR F3(2, 0x2, 0)
+#define INSN_NOP F2(0,4)
+
+ bfd_vma x, y;
+
+ /* If the instruction is a call with either:
+ restore
+ arithmetic instruction with rd == %o7
+ where rs1 != %o7 and rs2 if it is register != %o7
+ then we can optimize if the call destination is near
+ by changing the call into a branch always. */
+ x = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
+ if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
+ {
+ if (((y & OP3(~0)) == OP3(0x3d) /* restore */
+ || ((y & OP3(0x28)) == 0 /* arithmetic */
+ && (y & RD(~0)) == RD(O7)))
+ && (y & RS1(~0)) != RS1(O7)
+ && ((y & F3I(~0))
+ || (y & RS2(~0)) != RS2(O7)))
+ {
+ bfd_vma reloc;
+
+ reloc = relocation + rel->r_addend - rel->r_offset;
+ reloc -= (input_section->output_section->vma
+ + input_section->output_offset);
+ if (reloc & 3)
+ goto do_default;
+
+ /* Ensure the branch fits into simm22. */
+ if ((reloc & ~(bfd_vma)0x7fffff)
+ && ((reloc | 0x7fffff) != MINUS_ONE))
+ goto do_default;
+ reloc >>= 2;
+
+ /* Check whether it fits into simm19. */
+ if ((reloc & 0x3c0000) == 0
+ || (reloc & 0x3c0000) == 0x3c0000)
+ x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
+ else
+ x = INSN_BA | (reloc & 0x3fffff); /* ba */
+ bfd_put_32 (input_bfd, x, contents + rel->r_offset);
+ r = bfd_reloc_ok;
+ if (rel->r_offset >= 4
+ && (y & (0xffffffff ^ RS1(~0)))
+ == (INSN_OR | RD(O7) | RS2(G0)))
+ {
+ bfd_vma z;
+ unsigned int reg;
+
+ z = bfd_get_32 (input_bfd,
+ contents + rel->r_offset - 4);
+ if ((z & (0xffffffff ^ RD(~0)))
+ != (INSN_OR | RS1(O7) | RS2(G0)))
+ break;
+
+ /* The sequence was
+ or %o7, %g0, %rN
+ call foo
+ or %rN, %g0, %o7
+
+ If call foo was replaced with ba, replace
+ or %rN, %g0, %o7 with nop. */
+
+ reg = (y & RS1(~0)) >> 14;
+ if (reg != ((z & RD(~0)) >> 25)
+ || reg == G0 || reg == O7)
+ break;
+
+ bfd_put_32 (input_bfd, INSN_NOP,
+ contents + rel->r_offset + 4);
+ }
+ break;
+ }
+ }
+ }
+ /* FALLTHROUGH */
+
default:
do_default:
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
/* We don't want dynamic objects memory ordering and
architecture to have any role. That's what dynamic linker
should do. */
- old_flags &= ~(EF_SPARCV9_MM | EF_SPARC_SUN_US1 | EF_SPARC_HAL_R1);
- old_flags |= (new_flags
+ new_flags &= ~(EF_SPARCV9_MM | EF_SPARC_SUN_US1 | EF_SPARC_HAL_R1);
+ new_flags |= (old_flags
& (EF_SPARCV9_MM
| EF_SPARC_SUN_US1
| EF_SPARC_HAL_R1));
static const char *
sparc64_elf_print_symbol_all (abfd, filep, symbol)
- bfd *abfd;
+ bfd *abfd ATTRIBUTE_UNUSED;
PTR filep;
asymbol *symbol;
{
sparc64_elf_canonicalize_dynamic_reloc
#define bfd_elf64_bfd_reloc_type_lookup \
sparc64_elf_reloc_type_lookup
+#define bfd_elf64_bfd_relax_section \
+ sparc64_elf_relax_section
#define elf_backend_create_dynamic_sections \
_bfd_elf_create_dynamic_sections
projects / binutils-gdb.git / blobdiff