/* Renesas RL78 specific support for 32-bit ELF.
- Copyright (C) 2011-2013 Free Software Foundation, Inc.
+ Copyright (C) 2011-2020 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
#include "sysdep.h"
#include "bfd.h"
-#include "bfd_stdint.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/rl78.h"
HOWTO (R_RL78_##n, shift, sz, bit, pcrel, 0, complain_overflow_ ## complain, \
bfd_elf_generic_reloc, "R_RL78_" #n, FALSE, 0, ~0, FALSE)
+static bfd_reloc_status_type rl78_special_reloc (bfd *, arelent *, asymbol *, void *,
+ asection *, bfd *, char **);
+
+/* FIXME: We could omit the SHIFT parameter, it is always zero. */
+#define RL78_OP_REL(n,sz,bit,shift,complain,pcrel) \
+ HOWTO (R_RL78_##n, shift, sz, bit, pcrel, 0, complain_overflow_ ## complain, \
+ rl78_special_reloc, "R_RL78_" #n, FALSE, 0, ~0, FALSE)
+
/* Note that the relocations around 0x7f are internal to this file;
feel free to move them as needed to avoid conflicts with published
relocation numbers. */
static reloc_howto_type rl78_elf_howto_table [] =
{
- RL78REL (NONE, 0, 0, 0, dont, FALSE),
- RL78REL (DIR32, 2, 32, 0, signed, FALSE),
- RL78REL (DIR24S, 2, 24, 0, signed, FALSE),
- RL78REL (DIR16, 1, 16, 0, dont, FALSE),
- RL78REL (DIR16U, 1, 16, 0, unsigned, FALSE),
- RL78REL (DIR16S, 1, 16, 0, signed, FALSE),
- RL78REL (DIR8, 0, 8, 0, dont, FALSE),
- RL78REL (DIR8U, 0, 8, 0, unsigned, FALSE),
- RL78REL (DIR8S, 0, 8, 0, signed, FALSE),
+ RL78REL (NONE, 3, 0, 0, dont, FALSE),
+ RL78REL (DIR32, 2, 32, 0, signed, FALSE),
+ RL78REL (DIR24S, 2, 24, 0, signed, FALSE),
+ RL78REL (DIR16, 1, 16, 0, dont, FALSE),
+ RL78REL (DIR16U, 1, 16, 0, unsigned, FALSE),
+ RL78REL (DIR16S, 1, 16, 0, signed, FALSE),
+ RL78REL (DIR8, 0, 8, 0, dont, FALSE),
+ RL78REL (DIR8U, 0, 8, 0, unsigned, FALSE),
+ RL78REL (DIR8S, 0, 8, 0, signed, FALSE),
RL78REL (DIR24S_PCREL, 2, 24, 0, signed, TRUE),
RL78REL (DIR16S_PCREL, 1, 16, 0, signed, TRUE),
- RL78REL (DIR8S_PCREL, 0, 8, 0, signed, TRUE),
- RL78REL (DIR16UL, 1, 16, 2, unsigned, FALSE),
- RL78REL (DIR16UW, 1, 16, 1, unsigned, FALSE),
- RL78REL (DIR8UL, 0, 8, 2, unsigned, FALSE),
- RL78REL (DIR8UW, 0, 8, 1, unsigned, FALSE),
- RL78REL (DIR32_REV, 1, 16, 0, dont, FALSE),
- RL78REL (DIR16_REV, 1, 16, 0, dont, FALSE),
- RL78REL (DIR3U_PCREL, 0, 3, 0, dont, TRUE),
+ RL78REL (DIR8S_PCREL, 0, 8, 0, signed, TRUE),
+ RL78REL (DIR16UL, 1, 16, 2, unsigned, FALSE),
+ RL78REL (DIR16UW, 1, 16, 1, unsigned, FALSE),
+ RL78REL (DIR8UL, 0, 8, 2, unsigned, FALSE),
+ RL78REL (DIR8UW, 0, 8, 1, unsigned, FALSE),
+ RL78REL (DIR32_REV, 1, 16, 0, dont, FALSE),
+ RL78REL (DIR16_REV, 1, 16, 0, dont, FALSE),
+ RL78REL (DIR3U_PCREL, 0, 3, 0, dont, TRUE),
EMPTY_HOWTO (0x13),
EMPTY_HOWTO (0x14),
EMPTY_HOWTO (0x2a),
EMPTY_HOWTO (0x2b),
EMPTY_HOWTO (0x2c),
- RL78REL (RH_RELAX, 0, 0, 0, dont, FALSE),
+ RL78REL (RH_RELAX, 0, 0, 0, dont, FALSE),
EMPTY_HOWTO (0x2e),
- EMPTY_HOWTO (0x2f),
+ RL78REL (RH_SADDR, 0, 0, 0, dont, FALSE),
EMPTY_HOWTO (0x30),
EMPTY_HOWTO (0x31),
EMPTY_HOWTO (0x32),
EMPTY_HOWTO (0x3f),
EMPTY_HOWTO (0x40),
- RL78REL (ABS32, 2, 32, 0, dont, FALSE),
- RL78REL (ABS24S, 2, 24, 0, signed, FALSE),
- RL78REL (ABS16, 1, 16, 0, dont, FALSE),
- RL78REL (ABS16U, 1, 16, 0, unsigned, FALSE),
- RL78REL (ABS16S, 1, 16, 0, signed, FALSE),
- RL78REL (ABS8, 0, 8, 0, dont, FALSE),
- RL78REL (ABS8U, 0, 8, 0, unsigned, FALSE),
- RL78REL (ABS8S, 0, 8, 0, signed, FALSE),
- RL78REL (ABS24S_PCREL, 2, 24, 0, signed, TRUE),
- RL78REL (ABS16S_PCREL, 1, 16, 0, signed, TRUE),
- RL78REL (ABS8S_PCREL, 0, 8, 0, signed, TRUE),
- RL78REL (ABS16UL, 1, 16, 0, unsigned, FALSE),
- RL78REL (ABS16UW, 1, 16, 0, unsigned, FALSE),
- RL78REL (ABS8UL, 0, 8, 0, unsigned, FALSE),
- RL78REL (ABS8UW, 0, 8, 0, unsigned, FALSE),
- RL78REL (ABS32_REV, 2, 32, 0, dont, FALSE),
- RL78REL (ABS16_REV, 1, 16, 0, dont, FALSE),
+ RL78_OP_REL (ABS32, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (ABS24S, 2, 24, 0, signed, FALSE),
+ RL78_OP_REL (ABS16, 1, 16, 0, dont, FALSE),
+ RL78_OP_REL (ABS16U, 1, 16, 0, unsigned, FALSE),
+ RL78_OP_REL (ABS16S, 1, 16, 0, signed, FALSE),
+ RL78_OP_REL (ABS8, 0, 8, 0, dont, FALSE),
+ RL78_OP_REL (ABS8U, 0, 8, 0, unsigned, FALSE),
+ RL78_OP_REL (ABS8S, 0, 8, 0, signed, FALSE),
+ RL78_OP_REL (ABS24S_PCREL, 2, 24, 0, signed, TRUE),
+ RL78_OP_REL (ABS16S_PCREL, 1, 16, 0, signed, TRUE),
+ RL78_OP_REL (ABS8S_PCREL, 0, 8, 0, signed, TRUE),
+ RL78_OP_REL (ABS16UL, 1, 16, 0, unsigned, FALSE),
+ RL78_OP_REL (ABS16UW, 1, 16, 0, unsigned, FALSE),
+ RL78_OP_REL (ABS8UL, 0, 8, 0, unsigned, FALSE),
+ RL78_OP_REL (ABS8UW, 0, 8, 0, unsigned, FALSE),
+ RL78_OP_REL (ABS32_REV, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (ABS16_REV, 1, 16, 0, dont, FALSE),
#define STACK_REL_P(x) ((x) <= R_RL78_ABS16_REV && (x) >= R_RL78_ABS32)
EMPTY_HOWTO (0x7e),
EMPTY_HOWTO (0x7f),
- RL78REL (SYM, 2, 32, 0, dont, FALSE),
- RL78REL (OPneg, 2, 32, 0, dont, FALSE),
- RL78REL (OPadd, 2, 32, 0, dont, FALSE),
- RL78REL (OPsub, 2, 32, 0, dont, FALSE),
- RL78REL (OPmul, 2, 32, 0, dont, FALSE),
- RL78REL (OPdiv, 2, 32, 0, dont, FALSE),
- RL78REL (OPshla, 2, 32, 0, dont, FALSE),
- RL78REL (OPshra, 2, 32, 0, dont, FALSE),
- RL78REL (OPsctsize, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (SYM, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (OPneg, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (OPadd, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (OPsub, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (OPmul, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (OPdiv, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (OPshla, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (OPshra, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (OPsctsize, 2, 32, 0, dont, FALSE),
EMPTY_HOWTO (0x89),
EMPTY_HOWTO (0x8a),
EMPTY_HOWTO (0x8b),
EMPTY_HOWTO (0x8c),
- RL78REL (OPscttop, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (OPscttop, 2, 32, 0, dont, FALSE),
EMPTY_HOWTO (0x8e),
EMPTY_HOWTO (0x8f),
- RL78REL (OPand, 2, 32, 0, dont, FALSE),
- RL78REL (OPor, 2, 32, 0, dont, FALSE),
- RL78REL (OPxor, 2, 32, 0, dont, FALSE),
- RL78REL (OPnot, 2, 32, 0, dont, FALSE),
- RL78REL (OPmod, 2, 32, 0, dont, FALSE),
- RL78REL (OPromtop, 2, 32, 0, dont, FALSE),
- RL78REL (OPramtop, 2, 32, 0, dont, FALSE)
+ RL78_OP_REL (OPand, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (OPor, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (OPxor, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (OPnot, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (OPmod, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (OPromtop, 2, 32, 0, dont, FALSE),
+ RL78_OP_REL (OPramtop, 2, 32, 0, dont, FALSE)
};
\f
/* Map BFD reloc types to RL78 ELF reloc types. */
struct rl78_reloc_map
{
bfd_reloc_code_real_type bfd_reloc_val;
- unsigned int rl78_reloc_val;
+ unsigned int rl78_reloc_val;
};
static const struct rl78_reloc_map rl78_reloc_map [] =
{ BFD_RELOC_RL78_ABS16UL, R_RL78_ABS16UL },
{ BFD_RELOC_RL78_ABS16UW, R_RL78_ABS16UW },
{ BFD_RELOC_RL78_ABS16U, R_RL78_ABS16U },
+ { BFD_RELOC_RL78_SADDR, R_RL78_RH_SADDR },
{ BFD_RELOC_RL78_RELAX, R_RL78_RH_RELAX }
};
if (code == BFD_RELOC_RL78_32_OP)
return rl78_elf_howto_table + R_RL78_DIR32;
- for (i = ARRAY_SIZE (rl78_reloc_map); --i;)
+ for (i = ARRAY_SIZE (rl78_reloc_map); i--;)
if (rl78_reloc_map [i].bfd_reloc_val == code)
return rl78_elf_howto_table + rl78_reloc_map[i].rl78_reloc_val;
/* Set the howto pointer for an RL78 ELF reloc. */
-static void
-rl78_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
- arelent * cache_ptr,
+static bfd_boolean
+rl78_info_to_howto_rela (bfd * abfd,
+ arelent * cache_ptr,
Elf_Internal_Rela * dst)
{
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
- BFD_ASSERT (r_type < (unsigned int) R_RL78_max);
+ if (r_type >= (unsigned int) R_RL78_max)
+ {
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
+ abfd, r_type);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
cache_ptr->howto = rl78_elf_howto_table + r_type;
+ return TRUE;
}
\f
static bfd_vma
-get_symbol_value (const char * name,
- bfd_reloc_status_type * status,
+get_symbol_value (const char * name,
struct bfd_link_info * info,
- bfd * input_bfd,
- asection * input_section,
+ bfd * input_bfd,
+ asection * input_section,
int offset)
{
- bfd_vma value = 0;
struct bfd_link_hash_entry * h;
+ if (info == NULL)
+ return 0;
+
h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
if (h == NULL
|| (h->type != bfd_link_hash_defined
&& h->type != bfd_link_hash_defweak))
- * status = info->callbacks->undefined_symbol
- (info, name, input_bfd, input_section, offset, TRUE);
- else
- value = (h->u.def.value
- + h->u.def.section->output_section->vma
- + h->u.def.section->output_offset);
+ {
+ (*info->callbacks->undefined_symbol)
+ (info, name, input_bfd, input_section, offset, TRUE);
+ return 0;
+ }
- return value;
+ return (h->u.def.value
+ + h->u.def.section->output_section->vma
+ + h->u.def.section->output_offset);
}
static bfd_vma
-get_romstart (bfd_reloc_status_type * status,
- struct bfd_link_info * info,
- bfd * abfd,
- asection * sec,
+get_romstart (struct bfd_link_info * info,
+ bfd * abfd,
+ asection * sec,
int offset)
{
static bfd_boolean cached = FALSE;
if (!cached)
{
- cached_value = get_symbol_value ("_start", status, info, abfd, sec, offset);
+ cached_value = get_symbol_value ("_start", info, abfd, sec, offset);
cached = TRUE;
}
return cached_value;
}
static bfd_vma
-get_ramstart (bfd_reloc_status_type * status,
- struct bfd_link_info * info,
- bfd * abfd,
- asection * sec,
+get_ramstart (struct bfd_link_info * info,
+ bfd * abfd,
+ asection * sec,
int offset)
{
static bfd_boolean cached = FALSE;
if (!cached)
{
- cached_value = get_symbol_value ("__datastart", status, info, abfd, sec, offset);
+ cached_value = get_symbol_value ("__datastart", info, abfd, sec, offset);
cached = TRUE;
}
return cached_value;
do \
{ \
if (rl78_stack_top < NUM_STACK_ENTRIES) \
- rl78_stack [rl78_stack_top ++] = (val); \
+ rl78_stack [rl78_stack_top ++] = (val); \
else \
- r = bfd_reloc_dangerous; \
+ _bfd_error_handler (_("internal error: RL78 reloc stack overflow")); \
} \
while (0)
do \
{ \
if (rl78_stack_top > 0) \
- (dest) = rl78_stack [-- rl78_stack_top]; \
+ (dest) = rl78_stack [-- rl78_stack_top];\
else \
- (dest) = 0, r = bfd_reloc_dangerous; \
+ { \
+ _bfd_error_handler (_("internal error: RL78 reloc stack underflow")); \
+ (dest) = 0; \
+ } \
} \
while (0)
+/* Special handling for RL78 complex relocs. Returns the
+ value of the reloc, or 0 for relocs which do not generate
+ a result. SYMVAL is the value of the symbol for relocs
+ which use a symbolic argument. */
+
+static bfd_vma
+rl78_compute_complex_reloc (unsigned long r_type,
+ bfd_vma symval,
+ asection * input_section)
+{
+ int32_t tmp1, tmp2;
+ bfd_vma relocation;
+
+ switch (r_type)
+ {
+ default:
+ return 0;
+
+ case R_RL78_ABS24S_PCREL:
+ case R_RL78_ABS16S_PCREL:
+ case R_RL78_ABS8S_PCREL:
+ RL78_STACK_POP (relocation);
+ relocation -= input_section->output_section->vma + input_section->output_offset;
+ return relocation;
+
+ case R_RL78_ABS32:
+ case R_RL78_ABS32_REV:
+ case R_RL78_ABS16:
+ case R_RL78_ABS16_REV:
+ case R_RL78_ABS16S:
+ case R_RL78_ABS16U:
+ case R_RL78_ABS8:
+ case R_RL78_ABS8U:
+ case R_RL78_ABS8S:
+ RL78_STACK_POP (relocation);
+ return relocation;
+
+ case R_RL78_ABS16UL:
+ case R_RL78_ABS8UL:
+ RL78_STACK_POP (relocation);
+ return relocation >> 2;
+
+ case R_RL78_ABS16UW:
+ case R_RL78_ABS8UW:
+ RL78_STACK_POP (relocation);
+ return relocation >> 1;
+
+ /* The rest of the relocs compute values and then push them onto the stack. */
+ case R_RL78_OPramtop:
+ case R_RL78_OPromtop:
+ case R_RL78_SYM:
+ RL78_STACK_PUSH (symval);
+ return 0;
+
+ case R_RL78_OPneg:
+ RL78_STACK_POP (tmp1);
+ tmp1 = - tmp1;
+ RL78_STACK_PUSH (tmp1);
+ return 0;
+
+ case R_RL78_OPadd:
+ RL78_STACK_POP (tmp2);
+ RL78_STACK_POP (tmp1);
+ tmp1 += tmp2;
+ RL78_STACK_PUSH (tmp1);
+ return 0;
+
+ case R_RL78_OPsub:
+ /* For the expression "A - B", the assembler pushes A,
+ then B, then OPSUB. So the first op we pop is B, not A. */
+ RL78_STACK_POP (tmp2); /* B */
+ RL78_STACK_POP (tmp1); /* A */
+ tmp1 -= tmp2; /* A - B */
+ RL78_STACK_PUSH (tmp1);
+ return 0;
+
+ case R_RL78_OPmul:
+ RL78_STACK_POP (tmp2);
+ RL78_STACK_POP (tmp1);
+ tmp1 *= tmp2;
+ RL78_STACK_PUSH (tmp1);
+ return 0;
+
+ case R_RL78_OPdiv:
+ RL78_STACK_POP (tmp2);
+ RL78_STACK_POP (tmp1);
+ tmp1 /= tmp2;
+ RL78_STACK_PUSH (tmp1);
+ return 0;
+
+ case R_RL78_OPshla:
+ RL78_STACK_POP (tmp2);
+ RL78_STACK_POP (tmp1);
+ tmp1 <<= tmp2;
+ RL78_STACK_PUSH (tmp1);
+ return 0;
+
+ case R_RL78_OPshra:
+ RL78_STACK_POP (tmp2);
+ RL78_STACK_POP (tmp1);
+ tmp1 >>= tmp2;
+ RL78_STACK_PUSH (tmp1);
+ return 0;
+
+ case R_RL78_OPsctsize:
+ RL78_STACK_PUSH (input_section->size);
+ return 0;
+
+ case R_RL78_OPscttop:
+ RL78_STACK_PUSH (input_section->output_section->vma);
+ return 0;
+
+ case R_RL78_OPand:
+ RL78_STACK_POP (tmp2);
+ RL78_STACK_POP (tmp1);
+ tmp1 &= tmp2;
+ RL78_STACK_PUSH (tmp1);
+ return 0;
+
+ case R_RL78_OPor:
+ RL78_STACK_POP (tmp2);
+ RL78_STACK_POP (tmp1);
+ tmp1 |= tmp2;
+ RL78_STACK_PUSH (tmp1);
+ return 0;
+
+ case R_RL78_OPxor:
+ RL78_STACK_POP (tmp2);
+ RL78_STACK_POP (tmp1);
+ tmp1 ^= tmp2;
+ RL78_STACK_PUSH (tmp1);
+ return 0;
+
+ case R_RL78_OPnot:
+ RL78_STACK_POP (tmp1);
+ tmp1 = ~ tmp1;
+ RL78_STACK_PUSH (tmp1);
+ return 0;
+
+ case R_RL78_OPmod:
+ RL78_STACK_POP (tmp2);
+ RL78_STACK_POP (tmp1);
+ tmp1 %= tmp2;
+ RL78_STACK_PUSH (tmp1);
+ return 0;
+ }
+}
+
+#undef RL78_STACK_PUSH
+#undef RL78_STACK_POP
+
+#define OP(i) (contents[reloc->address + (i)])
+
+static bfd_reloc_status_type
+rl78_special_reloc (bfd * input_bfd,
+ arelent * reloc,
+ asymbol * symbol,
+ void * data,
+ asection * input_section,
+ bfd * output_bfd ATTRIBUTE_UNUSED,
+ char ** error_message ATTRIBUTE_UNUSED)
+{
+ bfd_reloc_status_type r = bfd_reloc_ok;
+ bfd_vma relocation = 0;
+ unsigned long r_type = reloc->howto->type;
+ bfd_byte * contents = data;
+
+ /* If necessary, compute the symbolic value of the relocation. */
+ switch (r_type)
+ {
+ case R_RL78_SYM:
+ relocation = (symbol->value
+ + symbol->section->output_section->vma
+ + symbol->section->output_offset
+ + reloc->addend);
+ break;
+
+ case R_RL78_OPromtop:
+ relocation = get_romstart (NULL, input_bfd, input_section,
+ reloc->address);
+ break;
+
+ case R_RL78_OPramtop:
+ relocation = get_ramstart (NULL, input_bfd, input_section,
+ reloc->address);
+ break;
+ }
+
+ /* Get the value of the relocation. */
+ relocation = rl78_compute_complex_reloc (r_type, relocation, input_section);
+
+ /* If the relocation alters the contents of the section then apply it now.
+ Note - since this function is called from
+ bfd_generic_get_relocated_section_contents via bfd_perform_relocation,
+ and not from the linker, we do not perform any range checking. The
+ clients who are calling us are only interested in some relocated section
+ contents, and not any linkage problems that might occur later. */
+ switch (r_type)
+ {
+ case R_RL78_ABS32:
+ OP (0) = relocation;
+ OP (1) = relocation >> 8;
+ OP (2) = relocation >> 16;
+ OP (3) = relocation >> 24;
+ break;
+
+ case R_RL78_ABS32_REV:
+ OP (3) = relocation;
+ OP (2) = relocation >> 8;
+ OP (1) = relocation >> 16;
+ OP (0) = relocation >> 24;
+ break;
+
+ case R_RL78_ABS24S_PCREL:
+ case R_RL78_ABS24S:
+ OP (0) = relocation;
+ OP (1) = relocation >> 8;
+ OP (2) = relocation >> 16;
+ break;
+
+ case R_RL78_ABS16_REV:
+ OP (1) = relocation;
+ OP (0) = relocation >> 8;
+ break;
+
+ case R_RL78_ABS16S_PCREL:
+ case R_RL78_ABS16:
+ case R_RL78_ABS16S:
+ case R_RL78_ABS16U:
+ case R_RL78_ABS16UL:
+ case R_RL78_ABS16UW:
+ OP (0) = relocation;
+ OP (1) = relocation >> 8;
+ break;
+
+ case R_RL78_ABS8S_PCREL:
+ case R_RL78_ABS8:
+ case R_RL78_ABS8U:
+ case R_RL78_ABS8UL:
+ case R_RL78_ABS8UW:
+ case R_RL78_ABS8S:
+ OP (0) = relocation;
+ break;
+
+ default:
+ break;
+ }
+
+ return r;
+}
+
+#undef OP
+#define OP(i) (contents[rel->r_offset + (i)])
+
/* Relocate an RL78 ELF section.
There is some attempt to make this function usable for many architectures,
both USE_REL and USE_RELA ['twould be nice if such a critter existed],
static bfd_boolean
rl78_elf_relocate_section
- (bfd * output_bfd,
+ (bfd * output_bfd,
struct bfd_link_info * info,
- bfd * input_bfd,
- asection * input_section,
- bfd_byte * contents,
+ bfd * input_bfd,
+ asection * input_section,
+ bfd_byte * contents,
Elf_Internal_Rela * relocs,
- Elf_Internal_Sym * local_syms,
- asection ** local_sections)
+ Elf_Internal_Sym * local_syms,
+ asection ** local_sections)
{
- Elf_Internal_Shdr * symtab_hdr;
+ Elf_Internal_Shdr * symtab_hdr;
struct elf_link_hash_entry ** sym_hashes;
- Elf_Internal_Rela * rel;
- Elf_Internal_Rela * relend;
- bfd *dynobj;
+ Elf_Internal_Rela * rel;
+ Elf_Internal_Rela * relend;
asection *splt;
symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
relend = relocs + input_section->reloc_count;
- dynobj = elf_hash_table (info)->dynobj;
- splt = NULL;
- if (dynobj != NULL)
- splt = bfd_get_linker_section (dynobj, ".plt");
+ splt = elf_hash_table (info)->splt;
for (rel = relocs; rel < relend; rel ++)
{
- reloc_howto_type * howto;
- unsigned long r_symndx;
- Elf_Internal_Sym * sym;
- asection * sec;
+ reloc_howto_type * howto;
+ unsigned long r_symndx;
+ Elf_Internal_Sym * sym;
+ asection * sec;
struct elf_link_hash_entry * h;
- bfd_vma relocation;
- bfd_reloc_status_type r;
- const char * name = NULL;
- bfd_boolean unresolved_reloc = TRUE;
- int r_type;
+ bfd_vma relocation;
+ bfd_reloc_status_type r;
+ const char * name = NULL;
+ bfd_boolean unresolved_reloc = TRUE;
+ int r_type;
r_type = ELF32_R_TYPE (rel->r_info);
r_symndx = ELF32_R_SYM (rel->r_info);
howto = rl78_elf_howto_table + ELF32_R_TYPE (rel->r_info);
- h = NULL;
+ h = NULL;
sym = NULL;
sec = NULL;
relocation = 0;
name = bfd_elf_string_from_elf_section
(input_bfd, symtab_hdr->sh_link, sym->st_name);
- name = (sym->st_name == 0) ? bfd_section_name (input_bfd, sec) : name;
+ name = sym->st_name == 0 ? bfd_section_name (sec) : name;
}
else
{
- bfd_boolean warned;
+ bfd_boolean warned ATTRIBUTE_UNUSED;
+ bfd_boolean ignored ATTRIBUTE_UNUSED;
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
r_symndx, symtab_hdr, sym_hashes, h,
sec, relocation, unresolved_reloc,
- warned);
+ warned, ignored);
name = h->root.root.string;
}
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
rel, 1, relend, howto, 0, contents);
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
{
/* This is a relocatable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
+ anything, unless the reloc is against a section symbol,
+ in which case we have to adjust according to where the
+ section symbol winds up in the output section. */
if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
rel->r_addend += sec->output_offset;
continue;
r = bfd_reloc_ok;
#define RANGE(a,b) if (a > (long) relocation || (long) relocation > b) r = bfd_reloc_overflow
-#define ALIGN(m) if (relocation & m) r = bfd_reloc_other;
-#define OP(i) (contents[rel->r_offset + (i)])
/* Opcode relocs are always big endian. Data relocs are bi-endian. */
switch (r_type)
break;
/* Complex reloc handling: */
-
case R_RL78_ABS32:
- RL78_STACK_POP (relocation);
- OP (0) = relocation;
- OP (1) = relocation >> 8;
- OP (2) = relocation >> 16;
- OP (3) = relocation >> 24;
- break;
-
case R_RL78_ABS32_REV:
- RL78_STACK_POP (relocation);
- OP (3) = relocation;
- OP (2) = relocation >> 8;
- OP (1) = relocation >> 16;
- OP (0) = relocation >> 24;
- break;
-
case R_RL78_ABS24S_PCREL:
case R_RL78_ABS24S:
- RL78_STACK_POP (relocation);
- RANGE (-0x800000, 0x7fffff);
- OP (0) = relocation;
- OP (1) = relocation >> 8;
- OP (2) = relocation >> 16;
- break;
-
case R_RL78_ABS16:
- RL78_STACK_POP (relocation);
- RANGE (-32768, 65535);
- OP (0) = relocation;
- OP (1) = relocation >> 8;
- break;
-
case R_RL78_ABS16_REV:
- RL78_STACK_POP (relocation);
- RANGE (-32768, 65535);
- OP (1) = relocation;
- OP (0) = relocation >> 8;
- break;
-
case R_RL78_ABS16S_PCREL:
case R_RL78_ABS16S:
- RL78_STACK_POP (relocation);
- RANGE (-32768, 32767);
- OP (0) = relocation;
- OP (1) = relocation >> 8;
- break;
-
case R_RL78_ABS16U:
- RL78_STACK_POP (relocation);
- RANGE (0, 65536);
- OP (0) = relocation;
- OP (1) = relocation >> 8;
- break;
-
case R_RL78_ABS16UL:
- RL78_STACK_POP (relocation);
- relocation >>= 2;
- RANGE (0, 65536);
- OP (0) = relocation;
- OP (1) = relocation >> 8;
- break;
-
case R_RL78_ABS16UW:
- RL78_STACK_POP (relocation);
- relocation >>= 1;
- RANGE (0, 65536);
- OP (0) = relocation;
- OP (1) = relocation >> 8;
- break;
-
case R_RL78_ABS8:
- RL78_STACK_POP (relocation);
- RANGE (-128, 255);
- OP (0) = relocation;
- break;
-
case R_RL78_ABS8U:
- RL78_STACK_POP (relocation);
- RANGE (0, 255);
- OP (0) = relocation;
- break;
-
case R_RL78_ABS8UL:
- RL78_STACK_POP (relocation);
- relocation >>= 2;
- RANGE (0, 255);
- OP (0) = relocation;
- break;
-
case R_RL78_ABS8UW:
- RL78_STACK_POP (relocation);
- relocation >>= 1;
- RANGE (0, 255);
- OP (0) = relocation;
- break;
-
case R_RL78_ABS8S_PCREL:
case R_RL78_ABS8S:
- RL78_STACK_POP (relocation);
- RANGE (-128, 127);
- OP (0) = relocation;
- break;
-
- case R_RL78_SYM:
- if (r_symndx < symtab_hdr->sh_info)
- RL78_STACK_PUSH (sec->output_section->vma
- + sec->output_offset
- + sym->st_value
- + rel->r_addend);
- else
- {
- if (h != NULL
- && (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak))
- RL78_STACK_PUSH (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset
- + rel->r_addend);
- else if (h->root.type == bfd_link_hash_undefweak)
- RL78_STACK_PUSH (0);
- else
- _bfd_error_handler (_("Warning: RL78_SYM reloc with an unknown symbol"));
- }
- break;
-
case R_RL78_OPneg:
- {
- int32_t tmp;
-
- RL78_STACK_POP (tmp);
- tmp = - tmp;
- RL78_STACK_PUSH (tmp);
- }
- break;
-
case R_RL78_OPadd:
- {
- int32_t tmp1, tmp2;
-
- RL78_STACK_POP (tmp2);
- RL78_STACK_POP (tmp1);
- tmp1 += tmp2;
- RL78_STACK_PUSH (tmp1);
- }
- break;
-
case R_RL78_OPsub:
- {
- int32_t tmp1, tmp2;
-
- /* For the expression "A - B", the assembler pushes A,
- then B, then OPSUB. So the first op we pop is B, not
- A. */
- RL78_STACK_POP (tmp2); /* B */
- RL78_STACK_POP (tmp1); /* A */
- tmp1 -= tmp2; /* A - B */
- RL78_STACK_PUSH (tmp1);
- }
- break;
-
case R_RL78_OPmul:
- {
- int32_t tmp1, tmp2;
-
- RL78_STACK_POP (tmp2);
- RL78_STACK_POP (tmp1);
- tmp1 *= tmp2;
- RL78_STACK_PUSH (tmp1);
- }
- break;
-
case R_RL78_OPdiv:
- {
- int32_t tmp1, tmp2;
-
- RL78_STACK_POP (tmp2);
- RL78_STACK_POP (tmp1);
- tmp1 /= tmp2;
- RL78_STACK_PUSH (tmp1);
- }
- break;
-
case R_RL78_OPshla:
- {
- int32_t tmp1, tmp2;
-
- RL78_STACK_POP (tmp2);
- RL78_STACK_POP (tmp1);
- tmp1 <<= tmp2;
- RL78_STACK_PUSH (tmp1);
- }
- break;
-
case R_RL78_OPshra:
- {
- int32_t tmp1, tmp2;
+ case R_RL78_OPsctsize:
+ case R_RL78_OPscttop:
+ case R_RL78_OPand:
+ case R_RL78_OPor:
+ case R_RL78_OPxor:
+ case R_RL78_OPnot:
+ case R_RL78_OPmod:
+ relocation = rl78_compute_complex_reloc (r_type, 0, input_section);
- RL78_STACK_POP (tmp2);
- RL78_STACK_POP (tmp1);
- tmp1 >>= tmp2;
- RL78_STACK_PUSH (tmp1);
- }
- break;
+ switch (r_type)
+ {
+ case R_RL78_ABS32:
+ OP (0) = relocation;
+ OP (1) = relocation >> 8;
+ OP (2) = relocation >> 16;
+ OP (3) = relocation >> 24;
+ break;
- case R_RL78_OPsctsize:
- RL78_STACK_PUSH (input_section->size);
- break;
+ case R_RL78_ABS32_REV:
+ OP (3) = relocation;
+ OP (2) = relocation >> 8;
+ OP (1) = relocation >> 16;
+ OP (0) = relocation >> 24;
+ break;
- case R_RL78_OPscttop:
- RL78_STACK_PUSH (input_section->output_section->vma);
- break;
+ case R_RL78_ABS24S_PCREL:
+ case R_RL78_ABS24S:
+ RANGE (-0x800000, 0x7fffff);
+ OP (0) = relocation;
+ OP (1) = relocation >> 8;
+ OP (2) = relocation >> 16;
+ break;
- case R_RL78_OPand:
- {
- int32_t tmp1, tmp2;
+ case R_RL78_ABS16:
+ RANGE (-32768, 65535);
+ OP (0) = relocation;
+ OP (1) = relocation >> 8;
+ break;
- RL78_STACK_POP (tmp2);
- RL78_STACK_POP (tmp1);
- tmp1 &= tmp2;
- RL78_STACK_PUSH (tmp1);
- }
- break;
+ case R_RL78_ABS16_REV:
+ RANGE (-32768, 65535);
+ OP (1) = relocation;
+ OP (0) = relocation >> 8;
+ break;
- case R_RL78_OPor:
- {
- int32_t tmp1, tmp2;
+ case R_RL78_ABS16S_PCREL:
+ case R_RL78_ABS16S:
+ RANGE (-32768, 32767);
+ OP (0) = relocation;
+ OP (1) = relocation >> 8;
+ break;
- RL78_STACK_POP (tmp2);
- RL78_STACK_POP (tmp1);
- tmp1 |= tmp2;
- RL78_STACK_PUSH (tmp1);
- }
- break;
+ case R_RL78_ABS16U:
+ case R_RL78_ABS16UL:
+ case R_RL78_ABS16UW:
+ RANGE (0, 65536);
+ OP (0) = relocation;
+ OP (1) = relocation >> 8;
+ break;
- case R_RL78_OPxor:
- {
- int32_t tmp1, tmp2;
+ case R_RL78_ABS8:
+ RANGE (-128, 255);
+ OP (0) = relocation;
+ break;
- RL78_STACK_POP (tmp2);
- RL78_STACK_POP (tmp1);
- tmp1 ^= tmp2;
- RL78_STACK_PUSH (tmp1);
- }
- break;
+ case R_RL78_ABS8U:
+ case R_RL78_ABS8UL:
+ case R_RL78_ABS8UW:
+ RANGE (0, 255);
+ OP (0) = relocation;
+ break;
- case R_RL78_OPnot:
- {
- int32_t tmp;
+ case R_RL78_ABS8S_PCREL:
+ case R_RL78_ABS8S:
+ RANGE (-128, 127);
+ OP (0) = relocation;
+ break;
- RL78_STACK_POP (tmp);
- tmp = ~ tmp;
- RL78_STACK_PUSH (tmp);
- }
+ default:
+ break;
+ }
break;
- case R_RL78_OPmod:
- {
- int32_t tmp1, tmp2;
-
- RL78_STACK_POP (tmp2);
- RL78_STACK_POP (tmp1);
- tmp1 %= tmp2;
- RL78_STACK_PUSH (tmp1);
- }
+ case R_RL78_SYM:
+ if (r_symndx < symtab_hdr->sh_info)
+ relocation = sec->output_section->vma + sec->output_offset
+ + sym->st_value + rel->r_addend;
+ else if (h != NULL
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak))
+ relocation = h->root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset
+ + rel->r_addend;
+ else
+ {
+ relocation = 0;
+ if (h->root.type != bfd_link_hash_undefweak)
+ _bfd_error_handler
+ (_("warning: RL78_SYM reloc with an unknown symbol"));
+ }
+ (void) rl78_compute_complex_reloc (r_type, relocation, input_section);
break;
case R_RL78_OPromtop:
- RL78_STACK_PUSH (get_romstart (&r, info, input_bfd, input_section, rel->r_offset));
+ relocation = get_romstart (info, input_bfd, input_section, rel->r_offset);
+ (void) rl78_compute_complex_reloc (r_type, relocation, input_section);
break;
case R_RL78_OPramtop:
- RL78_STACK_PUSH (get_ramstart (&r, info, input_bfd, input_section, rel->r_offset));
+ relocation = get_ramstart (info, input_bfd, input_section, rel->r_offset);
+ (void) rl78_compute_complex_reloc (r_type, relocation, input_section);
break;
default:
/* Catch the case of a missing function declaration
and emit a more helpful error message. */
if (r_type == R_RL78_DIR24S_PCREL)
- msg = _("%B(%A): error: call to undefined function '%s'");
+ /* xgettext:c-format */
+ msg = _("%pB(%pA): error: call to undefined function '%s'");
else
- r = info->callbacks->reloc_overflow
+ (*info->callbacks->reloc_overflow)
(info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
input_bfd, input_section, rel->r_offset);
break;
case bfd_reloc_undefined:
- r = info->callbacks->undefined_symbol
- (info, name, input_bfd, input_section, rel->r_offset,
- TRUE);
+ (*info->callbacks->undefined_symbol)
+ (info, name, input_bfd, input_section, rel->r_offset, TRUE);
break;
case bfd_reloc_other:
- msg = _("%B(%A): warning: unaligned access to symbol '%s' in the small data area");
+ /* xgettext:c-format */
+ msg = _("%pB(%pA): warning: unaligned access to symbol '%s' in the small data area");
break;
case bfd_reloc_outofrange:
- msg = _("%B(%A): internal error: out of range error");
+ /* xgettext:c-format */
+ msg = _("%pB(%pA): internal error: out of range error");
break;
case bfd_reloc_notsupported:
- msg = _("%B(%A): internal error: unsupported relocation error");
+ /* xgettext:c-format */
+ msg = _("%pB(%pA): internal error: unsupported relocation error");
break;
case bfd_reloc_dangerous:
- msg = _("%B(%A): internal error: dangerous relocation");
+ /* xgettext:c-format */
+ msg = _("%pB(%pA): internal error: dangerous relocation");
break;
default:
- msg = _("%B(%A): internal error: unknown error");
+ /* xgettext:c-format */
+ msg = _("%pB(%pA): internal error: unknown error");
break;
}
if (msg)
_bfd_error_handler (msg, input_bfd, input_section, name);
-
- if (! r)
- return FALSE;
}
}
no_warn_mismatch = user_no_warn_mismatch;
}
+static const char *
+rl78_cpu_name (flagword flags)
+{
+ switch (flags & E_FLAG_RL78_CPU_MASK)
+ {
+ default: return "";
+ case E_FLAG_RL78_G10: return "G10";
+ case E_FLAG_RL78_G13: return "G13";
+ case E_FLAG_RL78_G14: return "G14";
+ }
+}
+
/* Merge backend specific data from an object file to the output
object file when linking. */
static bfd_boolean
-rl78_elf_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
+rl78_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
{
+ bfd *obfd = info->output_bfd;
flagword new_flags;
flagword old_flags;
bfd_boolean error = FALSE;
{
flagword changed_flags = old_flags ^ new_flags;
- if (changed_flags & E_FLAG_RL78_G10)
+ if (changed_flags & E_FLAG_RL78_CPU_MASK)
{
- (*_bfd_error_handler)
- (_("RL78/G10 ABI conflict: cannot link G10 and non-G10 objects together"));
+ flagword out_cpu = old_flags & E_FLAG_RL78_CPU_MASK;
+ flagword in_cpu = new_flags & E_FLAG_RL78_CPU_MASK;
- if (old_flags & E_FLAG_RL78_G10)
- (*_bfd_error_handler) (_("- %s is G10, %s is not"),
- bfd_get_filename (obfd), bfd_get_filename (ibfd));
+ if (in_cpu == E_FLAG_RL78_ANY_CPU || in_cpu == out_cpu)
+ /* It does not matter what new_cpu may have. */;
+ else if (out_cpu == E_FLAG_RL78_ANY_CPU)
+ {
+ if (in_cpu == E_FLAG_RL78_G10)
+ {
+ /* G10 files can only be linked with other G10 files.
+ If the output is set to "any" this means that it is
+ a G14 file that does not use hardware multiply/divide,
+ but that is still incompatible with the G10 ABI. */
+ error = TRUE;
+
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("RL78 ABI conflict: G10 file %pB cannot be linked"
+ " with %s file %pB"),
+ ibfd, rl78_cpu_name (out_cpu), obfd);
+ }
+ else
+ {
+ old_flags &= ~ E_FLAG_RL78_CPU_MASK;
+ old_flags |= in_cpu;
+ elf_elfheader (obfd)->e_flags = old_flags;
+ }
+ }
+ else
+ {
+ error = TRUE;
+
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("RL78 ABI conflict: cannot link %s file %pB with %s file %pB"),
+ rl78_cpu_name (in_cpu), ibfd,
+ rl78_cpu_name (out_cpu), obfd);
+ }
+ }
+
+ if (changed_flags & E_FLAG_RL78_64BIT_DOUBLES)
+ {
+ _bfd_error_handler
+ (_("RL78 merge conflict: cannot link 32-bit and 64-bit objects together"));
+
+ if (old_flags & E_FLAG_RL78_64BIT_DOUBLES)
+ /* xgettext:c-format */
+ _bfd_error_handler (_("- %pB is 64-bit, %pB is not"),
+ obfd, ibfd);
else
- (*_bfd_error_handler) (_("- %s is G10, %s is not"),
- bfd_get_filename (ibfd), bfd_get_filename (obfd));
+ /* xgettext:c-format */
+ _bfd_error_handler (_("- %pB is 64-bit, %pB is not"),
+ ibfd, obfd);
+ error = TRUE;
}
}
flags = elf_elfheader (abfd)->e_flags;
fprintf (file, _("private flags = 0x%lx:"), (long) flags);
- if (flags & E_FLAG_RL78_G10)
- fprintf (file, _(" [G10]"));
+ if (flags & E_FLAG_RL78_CPU_MASK)
+ fprintf (file, " [%s]", rl78_cpu_name (flags));
+
+ if (flags & E_FLAG_RL78_64BIT_DOUBLES)
+ fprintf (file, _(" [64-bit doubles]"));
fputc ('\n', file);
return TRUE;
/* Return the MACH for an e_flags value. */
static int
-elf32_rl78_machine (bfd * abfd)
+elf32_rl78_machine (bfd * abfd ATTRIBUTE_UNUSED)
{
- if ((elf_elfheader (abfd)->e_flags & EF_RL78_CPU_MASK) == EF_RL78_CPU_RL78)
- return bfd_mach_rl78;
-
- return 0;
+ return bfd_mach_rl78;
}
static bfd_boolean
elf32_rl78_machine (abfd));
return TRUE;
}
- \f
-#ifdef DEBUG
-void
-rl78_dump_symtab (bfd * abfd, void * internal_syms, void * external_syms)
-{
- size_t locsymcount;
- Elf_Internal_Sym * isymbuf;
- Elf_Internal_Sym * isymend;
- Elf_Internal_Sym * isym;
- Elf_Internal_Shdr * symtab_hdr;
- bfd_boolean free_internal = FALSE, free_external = FALSE;
- char * st_info_str;
- char * st_info_stb_str;
- char * st_other_str;
- char * st_shndx_str;
-
- if (! internal_syms)
- {
- internal_syms = bfd_malloc (1000);
- free_internal = 1;
- }
- if (! external_syms)
- {
- external_syms = bfd_malloc (1000);
- free_external = 1;
- }
-
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- locsymcount = symtab_hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
- if (free_internal)
- isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
- symtab_hdr->sh_info, 0,
- internal_syms, external_syms, NULL);
- else
- isymbuf = internal_syms;
- isymend = isymbuf + locsymcount;
-
- for (isym = isymbuf ; isym < isymend ; isym++)
- {
- switch (ELF_ST_TYPE (isym->st_info))
- {
- case STT_FUNC: st_info_str = "STT_FUNC";
- case STT_SECTION: st_info_str = "STT_SECTION";
- case STT_FILE: st_info_str = "STT_FILE";
- case STT_OBJECT: st_info_str = "STT_OBJECT";
- case STT_TLS: st_info_str = "STT_TLS";
- default: st_info_str = "";
- }
- switch (ELF_ST_BIND (isym->st_info))
- {
- case STB_LOCAL: st_info_stb_str = "STB_LOCAL";
- case STB_GLOBAL: st_info_stb_str = "STB_GLOBAL";
- default: st_info_stb_str = "";
- }
- switch (ELF_ST_VISIBILITY (isym->st_other))
- {
- case STV_DEFAULT: st_other_str = "STV_DEFAULT";
- case STV_INTERNAL: st_other_str = "STV_INTERNAL";
- case STV_PROTECTED: st_other_str = "STV_PROTECTED";
- default: st_other_str = "";
- }
- switch (isym->st_shndx)
- {
- case SHN_ABS: st_shndx_str = "SHN_ABS";
- case SHN_COMMON: st_shndx_str = "SHN_COMMON";
- case SHN_UNDEF: st_shndx_str = "SHN_UNDEF";
- default: st_shndx_str = "";
- }
- }
- if (free_internal)
- free (internal_syms);
- if (free_external)
- free (external_syms);
-}
-
-char *
-rl78_get_reloc (long reloc)
-{
- if (0 <= reloc && reloc < R_RL78_max)
- return rl78_elf_howto_table[reloc].name;
- return "";
-}
-#endif /* DEBUG */
-
\f
/* support PLT for 16-bit references to 24-bit functions. */
static bfd_boolean
rl78_elf_check_relocs
- (bfd * abfd,
+ (bfd * abfd,
struct bfd_link_info * info,
- asection * sec,
+ asection * sec,
const Elf_Internal_Rela * relocs)
{
- Elf_Internal_Shdr * symtab_hdr;
+ Elf_Internal_Shdr * symtab_hdr;
struct elf_link_hash_entry ** sym_hashes;
- const Elf_Internal_Rela * rel;
- const Elf_Internal_Rela * rel_end;
+ const Elf_Internal_Rela * rel;
+ const Elf_Internal_Rela * rel_end;
bfd_vma *local_plt_offsets;
asection *splt;
bfd *dynobj;
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
return TRUE;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
local_plt_offsets = elf_local_got_offsets (abfd);
- splt = NULL;
dynobj = elf_hash_table(info)->dynobj;
rel_end = relocs + sec->reloc_count;
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx < symtab_hdr->sh_info)
- h = NULL;
+ h = NULL;
else
{
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
-
- /* PR15323, ref flags aren't set for references in the same
- object. */
- h->root.non_ir_ref = 1;
}
switch (ELF32_R_TYPE (rel->r_info))
- {
+ {
/* This relocation describes a 16-bit pointer to a function.
We may need to allocate a thunk in low memory; reserve memory
for it now. */
case R_RL78_DIR16S:
if (dynobj == NULL)
elf_hash_table (info)->dynobj = dynobj = abfd;
+ splt = elf_hash_table (info)->splt;
if (splt == NULL)
{
- splt = bfd_get_linker_section (dynobj, ".plt");
- if (splt == NULL)
- {
- flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY | SEC_LINKER_CREATED
- | SEC_READONLY | SEC_CODE);
- splt = bfd_make_section_anyway_with_flags (dynobj, ".plt",
- flags);
- if (splt == NULL
- || ! bfd_set_section_alignment (dynobj, splt, 1))
- return FALSE;
- }
+ flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY | SEC_LINKER_CREATED
+ | SEC_READONLY | SEC_CODE);
+ splt = bfd_make_section_anyway_with_flags (dynobj, ".plt",
+ flags);
+ elf_hash_table (info)->splt = splt;
+ if (splt == NULL
+ || !bfd_set_section_alignment (splt, 1))
+ return FALSE;
}
if (h != NULL)
splt->size += 4;
}
break;
- }
+ }
}
return TRUE;
static bfd_boolean
rl78_elf_finish_dynamic_sections (bfd *abfd ATTRIBUTE_UNUSED,
- struct bfd_link_info *info)
+ struct bfd_link_info *info)
{
bfd *dynobj;
asection *splt;
this check if we're relaxing. Unfortunately, check_relocs is
called before relaxation. */
- if (info->relax_trip > 0)
+ if (info->relax_trip > 0)
return TRUE;
- if ((dynobj = elf_hash_table (info)->dynobj) != NULL
- && (splt = bfd_get_linker_section (dynobj, ".plt")) != NULL)
+ dynobj = elf_hash_table (info)->dynobj;
+ splt = elf_hash_table (info)->splt;
+ if (dynobj != NULL && splt != NULL)
{
bfd_byte *contents = splt->contents;
unsigned int i, size = splt->size;
static bfd_boolean
rl78_elf_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
- struct bfd_link_info *info)
+ struct bfd_link_info *info)
{
bfd *dynobj;
asection *splt;
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
return TRUE;
dynobj = elf_hash_table (info)->dynobj;
if (dynobj == NULL)
return TRUE;
- splt = bfd_get_linker_section (dynobj, ".plt");
+ splt = elf_hash_table (info)->splt;
BFD_ASSERT (splt != NULL);
splt->contents = (bfd_byte *) bfd_zalloc (dynobj, splt->size);
static bfd_boolean
rl78_elf_relax_plt_section (bfd *dynobj,
- asection *splt,
- struct bfd_link_info *info,
- bfd_boolean *again)
+ asection *splt,
+ struct bfd_link_info *info,
+ bfd_boolean *again)
{
struct relax_plt_data relax_plt_data;
bfd *ibfd;
/* Assume nothing changes. */
*again = FALSE;
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
return TRUE;
/* We only relax the .plt section at the moment. */
/* Likewise for local symbols, though that's somewhat less convenient
as we have to walk the list of input bfds and swap in symbol data. */
- for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link_next)
+ for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link.next)
{
bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd);
Elf_Internal_Shdr *symtab_hdr;
elf_link_hash_traverse (elf_hash_table (info),
rl78_relax_plt_realloc, &entry);
- for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link_next)
+ for (ibfd = info->input_bfds; ibfd ; ibfd = ibfd->link.next)
{
bfd_vma *local_plt_offsets = elf_local_got_offsets (ibfd);
unsigned int nlocals = elf_tdata (ibfd)->symtab_hdr.sh_info;
for (idx = 0; idx < nlocals; ++idx)
if (local_plt_offsets[idx] != (bfd_vma) -1)
{
- local_plt_offsets[idx] = entry;
+ local_plt_offsets[idx] = entry;
entry += 4;
}
}
static bfd_boolean
elf32_rl78_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr, int count,
- Elf_Internal_Rela *alignment_rel, int force_snip)
+ Elf_Internal_Rela *alignment_rel, int force_snip)
{
Elf_Internal_Shdr * symtab_hdr;
- unsigned int sec_shndx;
- bfd_byte * contents;
+ unsigned int sec_shndx;
+ bfd_byte * contents;
Elf_Internal_Rela * irel;
Elf_Internal_Rela * irelend;
Elf_Internal_Sym * isym;
Elf_Internal_Sym * isymend;
- bfd_vma toaddr;
- unsigned int symcount;
+ bfd_vma toaddr;
+ unsigned int symcount;
struct elf_link_hash_entry ** sym_hashes;
struct elf_link_hash_entry ** end_hashes;
toaddr = alignment_rel->r_offset;
irel = elf_section_data (sec)->relocs;
+ if (irel == NULL)
+ {
+ _bfd_elf_link_read_relocs (sec->owner, sec, NULL, NULL, TRUE);
+ irel = elf_section_data (sec)->relocs;
+ }
+
irelend = irel + sec->reloc_count;
/* Actually delete the bytes. */
memset (contents + toaddr - count, 0x03, count);
/* Adjust all the relocs. */
- for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
+ for (; irel && irel < irelend; irel++)
{
/* Get the new reloc address. */
if (irel->r_offset > addr
#define OFFSET_FOR_RELOC(rel, lrel, scale) \
rl78_offset_for_reloc (abfd, rel + 1, symtab_hdr, shndx_buf, intsyms, \
- lrel, abfd, sec, link_info, scale)
+ lrel, abfd, sec, link_info, scale)
static bfd_vma
-rl78_offset_for_reloc (bfd * abfd,
- Elf_Internal_Rela * rel,
- Elf_Internal_Shdr * symtab_hdr,
- Elf_External_Sym_Shndx * shndx_buf ATTRIBUTE_UNUSED,
- Elf_Internal_Sym * intsyms,
- Elf_Internal_Rela ** lrel,
- bfd * input_bfd,
- asection * input_section,
- struct bfd_link_info * info,
- int * scale)
+rl78_offset_for_reloc (bfd * abfd,
+ Elf_Internal_Rela * rel,
+ Elf_Internal_Shdr * symtab_hdr,
+ bfd_byte * shndx_buf ATTRIBUTE_UNUSED,
+ Elf_Internal_Sym * intsyms,
+ Elf_Internal_Rela ** lrel,
+ bfd * input_bfd,
+ asection * input_section,
+ struct bfd_link_info * info,
+ int * scale)
{
bfd_vma symval;
- bfd_reloc_status_type r;
*scale = 1;
gets a pointer to the last relocation used. */
while (1)
{
- int32_t tmp1, tmp2;
+ unsigned long r_type;
/* Get the value of the symbol referred to by the reloc. */
if (ELF32_R_SYM (rel->r_info) < symtab_hdr->sh_info)
symval += rel->r_addend;
}
- switch (ELF32_R_TYPE (rel->r_info))
+ r_type = ELF32_R_TYPE (rel->r_info);
+ switch (r_type)
{
case R_RL78_SYM:
- RL78_STACK_PUSH (symval);
+ (void) rl78_compute_complex_reloc (r_type, symval, input_section);
break;
- case R_RL78_OPneg:
- RL78_STACK_POP (tmp1);
- tmp1 = - tmp1;
- RL78_STACK_PUSH (tmp1);
+ case R_RL78_OPromtop:
+ symval = get_romstart (info, input_bfd, input_section, rel->r_offset);
+ (void) rl78_compute_complex_reloc (r_type, symval, input_section);
break;
- case R_RL78_OPadd:
- RL78_STACK_POP (tmp1);
- RL78_STACK_POP (tmp2);
- tmp1 += tmp2;
- RL78_STACK_PUSH (tmp1);
+ case R_RL78_OPramtop:
+ symval = get_ramstart (info, input_bfd, input_section, rel->r_offset);
+ (void) rl78_compute_complex_reloc (r_type, symval, input_section);
break;
+ case R_RL78_OPneg:
+ case R_RL78_OPadd:
case R_RL78_OPsub:
- RL78_STACK_POP (tmp1);
- RL78_STACK_POP (tmp2);
- tmp2 -= tmp1;
- RL78_STACK_PUSH (tmp2);
- break;
-
case R_RL78_OPmul:
- RL78_STACK_POP (tmp1);
- RL78_STACK_POP (tmp2);
- tmp1 *= tmp2;
- RL78_STACK_PUSH (tmp1);
- break;
-
case R_RL78_OPdiv:
- RL78_STACK_POP (tmp1);
- RL78_STACK_POP (tmp2);
- tmp1 /= tmp2;
- RL78_STACK_PUSH (tmp1);
- break;
-
case R_RL78_OPshla:
- RL78_STACK_POP (tmp1);
- RL78_STACK_POP (tmp2);
- tmp1 <<= tmp2;
- RL78_STACK_PUSH (tmp1);
- break;
-
case R_RL78_OPshra:
- RL78_STACK_POP (tmp1);
- RL78_STACK_POP (tmp2);
- tmp1 >>= tmp2;
- RL78_STACK_PUSH (tmp1);
- break;
-
case R_RL78_OPsctsize:
- RL78_STACK_PUSH (input_section->size);
- break;
-
case R_RL78_OPscttop:
- RL78_STACK_PUSH (input_section->output_section->vma);
- break;
-
case R_RL78_OPand:
- RL78_STACK_POP (tmp1);
- RL78_STACK_POP (tmp2);
- tmp1 &= tmp2;
- RL78_STACK_PUSH (tmp1);
- break;
-
case R_RL78_OPor:
- RL78_STACK_POP (tmp1);
- RL78_STACK_POP (tmp2);
- tmp1 |= tmp2;
- RL78_STACK_PUSH (tmp1);
- break;
-
case R_RL78_OPxor:
- RL78_STACK_POP (tmp1);
- RL78_STACK_POP (tmp2);
- tmp1 ^= tmp2;
- RL78_STACK_PUSH (tmp1);
- break;
-
case R_RL78_OPnot:
- RL78_STACK_POP (tmp1);
- tmp1 = ~ tmp1;
- RL78_STACK_PUSH (tmp1);
- break;
-
case R_RL78_OPmod:
- RL78_STACK_POP (tmp1);
- RL78_STACK_POP (tmp2);
- tmp1 %= tmp2;
- RL78_STACK_PUSH (tmp1);
- break;
-
- case R_RL78_OPromtop:
- RL78_STACK_PUSH (get_romstart (&r, info, input_bfd, input_section, rel->r_offset));
- break;
-
- case R_RL78_OPramtop:
- RL78_STACK_PUSH (get_ramstart (&r, info, input_bfd, input_section, rel->r_offset));
+ (void) rl78_compute_complex_reloc (r_type, 0, input_section);
break;
case R_RL78_DIR16UL:
case R_RL78_DIR8UL:
case R_RL78_ABS16UL:
case R_RL78_ABS8UL:
- if (rl78_stack_top)
- RL78_STACK_POP (symval);
- if (lrel)
- *lrel = rel;
*scale = 4;
- return symval;
+ goto reloc_computes_value;
case R_RL78_DIR16UW:
case R_RL78_DIR8UW:
case R_RL78_ABS16UW:
case R_RL78_ABS8UW:
- if (rl78_stack_top)
- RL78_STACK_POP (symval);
- if (lrel)
- *lrel = rel;
*scale = 2;
- return symval;
+ goto reloc_computes_value;
default:
- if (rl78_stack_top)
- RL78_STACK_POP (symval);
+ reloc_computes_value:
+ symval = rl78_compute_complex_reloc (r_type, symval, input_section);
+ /* Fall through. */
+ case R_RL78_DIR32:
+ case R_RL78_DIR24S:
+ case R_RL78_DIR16:
+ case R_RL78_DIR16U:
+ case R_RL78_DIR16S:
+ case R_RL78_DIR24S_PCREL:
+ case R_RL78_DIR16S_PCREL:
+ case R_RL78_DIR8S_PCREL:
if (lrel)
*lrel = rel;
return symval;
static bfd_boolean
rl78_elf_relax_section
- (bfd * abfd,
- asection * sec,
+ (bfd * abfd,
+ asection * sec,
struct bfd_link_info * link_info,
- bfd_boolean * again)
+ bfd_boolean * again)
{
Elf_Internal_Shdr * symtab_hdr;
Elf_Internal_Shdr * shndx_hdr;
Elf_Internal_Rela * srel;
Elf_Internal_Rela * irelend;
Elf_Internal_Rela * next_alignment;
- bfd_byte * contents = NULL;
- bfd_byte * free_contents = NULL;
+ bfd_byte * contents = NULL;
+ bfd_byte * free_contents = NULL;
Elf_Internal_Sym * intsyms = NULL;
Elf_Internal_Sym * free_intsyms = NULL;
- Elf_External_Sym_Shndx * shndx_buf = NULL;
+ bfd_byte * shndx_buf = NULL;
bfd_vma pc;
bfd_vma symval ATTRIBUTE_UNUSED = 0;
int pcrel ATTRIBUTE_UNUSED = 0;
/* We don't have to do anything for a relocatable link, if
this section does not have relocs, or if this is not a
code section. */
- if (link_info->relocatable
+ if (bfd_link_relocatable (link_info)
|| (sec->flags & SEC_RELOC) == 0
|| sec->reloc_count == 0
|| (sec->flags & SEC_CODE) == 0)
return TRUE;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
+ symtab_hdr = & elf_symtab_hdr (abfd);
+ if (elf_symtab_shndx_list (abfd))
+ shndx_hdr = & elf_symtab_shndx_list (abfd)->hdr;
+ else
+ shndx_hdr = NULL;
/* Get the section contents. */
if (elf_section_data (sec)->this_hdr.contents != NULL)
symtab_hdr->contents = (bfd_byte *) intsyms;
}
- if (shndx_hdr->sh_size != 0)
+ if (shndx_hdr && shndx_hdr->sh_size != 0)
{
- bfd_size_type amt;
+ size_t amt;
- amt = symtab_hdr->sh_info;
- amt *= sizeof (Elf_External_Sym_Shndx);
- shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
- if (shndx_buf == NULL)
+ if (_bfd_mul_overflow (symtab_hdr->sh_info,
+ sizeof (Elf_External_Sym_Shndx), &amt))
+ {
+ bfd_set_error (bfd_error_no_memory);
+ goto error_return;
+ }
+ if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0)
goto error_return;
- if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
- || bfd_bread (shndx_buf, amt, abfd) != amt)
+ shndx_buf = _bfd_malloc_and_read (abfd, amt, amt);
+ if (shndx_buf == NULL)
goto error_return;
- shndx_hdr->contents = (bfd_byte *) shndx_buf;
+ shndx_hdr->contents = shndx_buf;
}
/* Get a copy of the native relocations. */
nbytes /= alignment;
nbytes *= alignment;
- elf32_rl78_relax_delete_bytes (abfd, sec, erel->r_offset-nbytes, nbytes, next_alignment,
- erel->r_offset == sec->size);
+ elf32_rl78_relax_delete_bytes (abfd, sec, erel->r_offset - nbytes, nbytes,
+ next_alignment, erel->r_offset == sec->size);
*again = TRUE;
continue;
reloc entry (such as gp-rel symbols). */
/* Get the value of the symbol referred to by the reloc. Just
- in case this is the last reloc in the list, use the RL's
- addend to choose between this reloc (no addend) or the next
- (yes addend, which means at least one following reloc). */
+ in case this is the last reloc in the list, use the RL's
+ addend to choose between this reloc (no addend) or the next
+ (yes addend, which means at least one following reloc). */
/* srel points to the "current" reloction for this insn -
actually the last reloc for a given operand, which is the one
pc = sec->output_section->vma + sec->output_offset
+ srel->r_offset;
-#define GET_RELOC \
- BFD_ASSERT (nrelocs > 0); \
- symval = OFFSET_FOR_RELOC (srel, &srel, &scale); \
- pcrel = symval - pc + srel->r_addend; \
+#define GET_RELOC \
+ BFD_ASSERT (nrelocs > 0); \
+ symval = OFFSET_FOR_RELOC (srel, &srel, &scale); \
+ pcrel = symval - pc + srel->r_addend; \
nrelocs --;
#define SNIPNR(offset, nbytes) \
elf32_rl78_relax_delete_bytes (abfd, sec, (insn - contents) + offset, nbytes, next_alignment, 0);
-#define SNIP(offset, nbytes, newtype) \
- SNIPNR (offset, nbytes); \
+
+#define SNIP(offset, nbytes, newtype) \
+ SNIPNR (offset, nbytes); \
srel->r_info = ELF32_R_INFO (ELF32_R_SYM (srel->r_info), newtype)
/* The order of these bit tests must match the order that the
61 F3 EF ad SKNH ; BR $rel8
*/
- if (irel->r_addend & RL78_RELAXA_BRA)
+ if ((irel->r_addend & RL78_RELAXA_MASK) == RL78_RELAXA_BRA)
{
/* SKIP opcodes that skip non-branches will have a relax tag
but no corresponding symbol to relax against; we just
switch (insn[0])
{
+ case 0xdc: /* BC */
+ case 0xdd: /* BZ */
+ case 0xde: /* BNC */
+ case 0xdf: /* BNZ */
+ if (insn[1] == 0x03 && insn[2] == 0xee /* BR */
+ && (srel->r_offset - irel->r_offset) > 1) /* a B<c> without its own reloc */
+ {
+ /* This is a "long" conditional as generated by gas:
+ DC 03 EE ad.dr */
+ if (pcrel < 127
+ && pcrel > -127)
+ {
+ insn[0] ^= 0x02; /* invert conditional */
+ SNIPNR (4, 1);
+ SNIP (1, 2, R_RL78_DIR8S_PCREL);
+ insn[1] = pcrel;
+ *again = TRUE;
+ }
+ }
+ break;
+
case 0xec: /* BR !!abs20 */
if (pcrel < 127
insn[0] = 0xed;
insn[1] = symval & 0xff;
insn[2] = symval >> 8;
- SNIP (2, 1, R_RL78_DIR16S);
+ SNIP (2, 1, R_RL78_DIR16U);
*again = TRUE;
}
else if (pcrel < 32767
insn[0] = 0xfd;
insn[1] = symval & 0xff;
insn[2] = symval >> 8;
- SNIP (2, 1, R_RL78_DIR16S);
+ SNIP (2, 1, R_RL78_DIR16U);
*again = TRUE;
}
else if (pcrel < 32767
here anyway. */
switch (insn[1])
{
+ case 0xd3: /* BNH */
+ case 0xc3: /* BH */
+ if (insn[2] == 0x03 && insn[3] == 0xee
+ && (srel->r_offset - irel->r_offset) > 2) /* a B<c> without its own reloc */
+ {
+ /* Another long branch by gas:
+ 61 D3 03 EE ad.dr */
+ if (pcrel < 127
+ && pcrel > -127)
+ {
+ insn[1] ^= 0x10; /* invert conditional */
+ SNIPNR (5, 1);
+ SNIP (2, 2, R_RL78_DIR8S_PCREL);
+ insn[2] = pcrel;
+ *again = TRUE;
+ }
+ }
+ break;
+
case 0xc8: /* SKC */
if (insn[2] == 0xef)
{
}
break;
}
-
}
- if (irel->r_addend & RL78_RELAXA_ADDR16)
+ if ((irel->r_addend & RL78_RELAXA_MASK) == RL78_RELAXA_ADDR16
+ && nrelocs > 0)
{
/*----------------------------------------------------------------------*/
/* Some insns have both a 16-bit address operand and an 8-bit
Address 16-bit operand SADDR range SFR range
FFF00-FFFFF 0xff00-0xffff 0x00-0xff
- FFE20-FFF1F 0xfe20-0xff1f 0x00-0xff
+ FFE20-FFF1F 0xfe20-0xff1f 0x00-0xff
The RELAX_ADDR16[] array has the insn encodings for the
16-bit operand version, as well as the SFR and SADDR
insn[poff] = relax_addr16[idx].insn_for_saddr;
SNIP (poff+2, 1, R_RL78_RH_SADDR);
}
-
}
}
}
-
/*----------------------------------------------------------------------*/
-
}
return TRUE;
error_return:
- if (free_relocs != NULL)
- free (free_relocs);
-
- if (free_contents != NULL)
- free (free_contents);
+ free (free_relocs);
+ free (free_contents);
if (shndx_buf != NULL)
{
free (shndx_buf);
}
- if (free_intsyms != NULL)
- free (free_intsyms);
+ free (free_intsyms);
return TRUE;
}
#define ELF_MACHINE_CODE EM_RL78
#define ELF_MAXPAGESIZE 0x1000
-#define TARGET_LITTLE_SYM bfd_elf32_rl78_vec
+#define TARGET_LITTLE_SYM rl78_elf32_vec
#define TARGET_LITTLE_NAME "elf32-rl78"
#define elf_info_to_howto_rel NULL
#define elf_info_to_howto rl78_info_to_howto_rela
#define elf_backend_object_p rl78_elf_object_p
#define elf_backend_relocate_section rl78_elf_relocate_section
-#define elf_symbol_leading_char ('_')
+#define elf_symbol_leading_char ('_')
#define elf_backend_can_gc_sections 1
#define bfd_elf32_bfd_reloc_type_lookup rl78_reloc_type_lookup
#define bfd_elf32_bfd_print_private_bfd_data rl78_elf_print_private_bfd_data
#define bfd_elf32_bfd_relax_section rl78_elf_relax_section
-#define elf_backend_check_relocs rl78_elf_check_relocs
+#define elf_backend_check_relocs rl78_elf_check_relocs
#define elf_backend_always_size_sections \
rl78_elf_always_size_sections
#define elf_backend_finish_dynamic_sections \
projects / deliverable / binutils-gdb.git / blobdiff