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Diffstat (limited to 'bfd/elf32-i860.c')
-rw-r--r--bfd/elf32-i860.c204
1 files changed, 198 insertions, 6 deletions
diff --git a/bfd/elf32-i860.c b/bfd/elf32-i860.c
index 0e013ef..b523fb3 100644
--- a/bfd/elf32-i860.c
+++ b/bfd/elf32-i860.c
@@ -26,6 +26,198 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "elf-bfd.h"
#include "elf/i860.h"
+/* special_function for R_860_PC26 relocation.
+ Derived from bfd_elf_generic_reloc (elf.c) with modifications. */
+static bfd_reloc_status_type
+i860_howto_pc26_reloc (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void *data ATTRIBUTE_UNUSED,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ if (output_bfd != NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && (! reloc_entry->howto->partial_inplace
+ || reloc_entry->addend == 0))
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ reloc_entry->addend -= 4;
+ return bfd_reloc_continue;
+}
+
+/* special_function for R_860_PC16 relocation. */
+static bfd_reloc_status_type
+i860_howto_pc16_reloc (bfd *abfd,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void *data,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ bfd_vma insn;
+ bfd_vma relocation;
+ bfd_byte *addr;
+
+ if (output_bfd != NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && (! reloc_entry->howto->partial_inplace
+ || reloc_entry->addend == 0))
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ /* Used elf32-mips.c as an example. */
+ if (bfd_is_und_section (symbol->section)
+ && output_bfd == (bfd *) NULL)
+ return bfd_reloc_undefined;
+
+ if (bfd_is_com_section (symbol->section))
+ relocation = 0;
+ else
+ relocation = symbol->value;
+
+ relocation += symbol->section->output_section->vma;
+ relocation += symbol->section->output_offset;
+ relocation += reloc_entry->addend;
+
+ if (reloc_entry->address > input_section->_cooked_size)
+ return bfd_reloc_outofrange;
+
+ /* Adjust for PC-relative relocation. */
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset
+ + reloc_entry->address
+ + 4);
+
+ /* Check for target out of range. */
+ if ((bfd_signed_vma)relocation > (0x7fff << 2)
+ || (bfd_signed_vma)relocation < (-0x8000 << 2))
+ return bfd_reloc_outofrange;
+
+ addr = (bfd_byte *) data + reloc_entry->address;
+ insn = bfd_get_32 (abfd, addr);
+
+ relocation >>= reloc_entry->howto->rightshift;
+ relocation = (((relocation & 0xf800) << 5) | (relocation & 0x7ff))
+ & reloc_entry->howto->dst_mask;
+ insn = (insn & ~reloc_entry->howto->dst_mask) | relocation;
+
+ bfd_put_32 (abfd, (bfd_vma) insn, addr);
+
+ return bfd_reloc_ok;
+}
+
+/* special_function for R_860_HIGHADJ relocation. */
+static bfd_reloc_status_type
+i860_howto_highadj_reloc (bfd *abfd,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void *data,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ bfd_vma insn;
+ bfd_vma relocation;
+ bfd_byte *addr;
+
+ if (output_bfd != NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && (! reloc_entry->howto->partial_inplace
+ || reloc_entry->addend == 0))
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ /* Used elf32-mips.c as an example. */
+ if (bfd_is_und_section (symbol->section)
+ && output_bfd == (bfd *) NULL)
+ return bfd_reloc_undefined;
+
+ if (bfd_is_com_section (symbol->section))
+ relocation = 0;
+ else
+ relocation = symbol->value;
+
+ relocation += symbol->section->output_section->vma;
+ relocation += symbol->section->output_offset;
+ relocation += reloc_entry->addend;
+ relocation += 0x8000;
+
+ if (reloc_entry->address > input_section->_cooked_size)
+ return bfd_reloc_outofrange;
+
+ addr = (bfd_byte *) data + reloc_entry->address;
+ insn = bfd_get_32 (abfd, addr);
+
+ relocation = ((relocation >> 16) & 0xffff);
+
+ insn = (insn & 0xffff0000) | relocation;
+
+ bfd_put_32 (abfd, (bfd_vma) insn, addr);
+
+ return bfd_reloc_ok;
+}
+
+/* special_function for R_860_SPLITn relocations. */
+static bfd_reloc_status_type
+i860_howto_splitn_reloc (bfd *abfd,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void *data,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ bfd_vma insn;
+ bfd_vma relocation;
+ bfd_byte *addr;
+
+ if (output_bfd != NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && (! reloc_entry->howto->partial_inplace
+ || reloc_entry->addend == 0))
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ /* Used elf32-mips.c as an example. */
+ if (bfd_is_und_section (symbol->section)
+ && output_bfd == (bfd *) NULL)
+ return bfd_reloc_undefined;
+
+ if (bfd_is_com_section (symbol->section))
+ relocation = 0;
+ else
+ relocation = symbol->value;
+
+ relocation += symbol->section->output_section->vma;
+ relocation += symbol->section->output_offset;
+ relocation += reloc_entry->addend;
+
+ if (reloc_entry->address > input_section->_cooked_size)
+ return bfd_reloc_outofrange;
+
+ addr = (bfd_byte *) data + reloc_entry->address;
+ insn = bfd_get_32 (abfd, addr);
+
+ relocation = (((relocation & 0xf800) << 5) | (relocation & 0x7ff))
+ & reloc_entry->howto->dst_mask;
+ insn = (insn & ~reloc_entry->howto->dst_mask) | relocation;
+
+ bfd_put_32 (abfd, (bfd_vma) insn, addr);
+
+ return bfd_reloc_ok;
+}
/* This howto table is preliminary. */
static reloc_howto_type elf32_i860_howto_table [] =
@@ -124,7 +316,7 @@ static reloc_howto_type elf32_i860_howto_table [] =
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ i860_howto_pc26_reloc, /* special_function */
"R_860_PC26", /* name */
FALSE, /* partial_inplace */
0x3ffffff, /* src_mask */
@@ -153,7 +345,7 @@ static reloc_howto_type elf32_i860_howto_table [] =
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ i860_howto_pc16_reloc, /* special_function */
"R_860_PC16", /* name */
FALSE, /* partial_inplace */
0x1f07ff, /* src_mask */
@@ -181,7 +373,7 @@ static reloc_howto_type elf32_i860_howto_table [] =
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ i860_howto_splitn_reloc, /* special_function */
"R_860_SPLIT0", /* name */
FALSE, /* partial_inplace */
0x1f07ff, /* src_mask */
@@ -209,7 +401,7 @@ static reloc_howto_type elf32_i860_howto_table [] =
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ i860_howto_splitn_reloc, /* special_function */
"R_860_SPLIT1", /* name */
FALSE, /* partial_inplace */
0x1f07fe, /* src_mask */
@@ -237,7 +429,7 @@ static reloc_howto_type elf32_i860_howto_table [] =
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ i860_howto_splitn_reloc, /* special_function */
"R_860_SPLIT2", /* name */
FALSE, /* partial_inplace */
0x1f07fc, /* src_mask */
@@ -419,7 +611,7 @@ static reloc_howto_type elf32_i860_howto_table [] =
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ i860_howto_highadj_reloc, /* special_function */
"R_860_HIGHADJ", /* name */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
generated by cgit v1.1 at 2024-12-20 20:11:45 +0000