diff options
Diffstat (limited to 'bfd/elf32-bfin.c')
| -rw-r--r-- | bfd/elf32-bfin.c | 2830 |
1 files changed, 2830 insertions, 0 deletions
diff --git a/bfd/elf32-bfin.c b/bfd/elf32-bfin.c new file mode 100644 index 0000000..72f8aee --- /dev/null +++ b/bfd/elf32-bfin.c @@ -0,0 +1,2830 @@ +/* ADI Blackfin BFD support for 32-bit ELF. + Copyright 2005 Free Software Foundation, Inc. + + This file is part of BFD, the Binary File Descriptor library. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, + USA. */ + +#include "bfd.h" +#include "sysdep.h" +#include "libbfd.h" +#include "elf-bfd.h" +#include "elf/bfin.h" + +/* Handling expression relocations for blackfin. Blackfin + will generate relocations in an expression form with a stack. + A relocation such as P1.H = _typenames-4000000; + will generate the following relocs at offset 4: +00000004 R_expst_push _typenames +00000004 R_expst_const .__constant +00000004 R_expst_sub .__operator +00000006 R_huimm16 .__operator + + The .__constant and .__operator symbol names are fake. + Special case is a single relocation + P1.L = _typenames; generates +00000002 R_luimm16 _typenames + + Thus, if you get a R_luimm16, R_huimm16, R_imm16, + if the stack is not empty, pop the stack and + put the value, else do the normal thing + We will currently assume that the max the stack + would grow to is 100. . */ + +#define RELOC_STACK_SIZE 100 +static bfd_vma reloc_stack[RELOC_STACK_SIZE]; +static unsigned int reloc_stack_tos = 0; + +#define is_reloc_stack_empty() ((reloc_stack_tos > 0) ? 0 : 1) + +static void +reloc_stack_push (bfd_vma value) +{ + reloc_stack[reloc_stack_tos++] = value; +} + +static bfd_vma +reloc_stack_pop (void) +{ + return reloc_stack[--reloc_stack_tos]; +} + +static bfd_vma +reloc_stack_operate (unsigned int oper) +{ + bfd_vma value; + switch (oper) + { + case R_add: + { + value = + reloc_stack[reloc_stack_tos - 2] + reloc_stack[reloc_stack_tos - 1]; + reloc_stack_tos -= 2; + break; + } + case R_sub: + { + value = + reloc_stack[reloc_stack_tos - 2] - reloc_stack[reloc_stack_tos - 1]; + reloc_stack_tos -= 2; + break; + } + case R_mult: + { + value = + reloc_stack[reloc_stack_tos - 2] * reloc_stack[reloc_stack_tos - 1]; + reloc_stack_tos -= 2; + break; + } + case R_div: + { + if (reloc_stack[reloc_stack_tos - 1] == 0) + { + _bfd_abort (__FILE__, __LINE__, _("Division by zero. ")); + } + else + { + value = + reloc_stack[reloc_stack_tos - 2] / reloc_stack[reloc_stack_tos - 1]; + reloc_stack_tos -= 2; + } + break; + } + case R_mod: + { + value = + reloc_stack[reloc_stack_tos - 2] % reloc_stack[reloc_stack_tos - 1]; + reloc_stack_tos -= 2; + break; + } + case R_lshift: + { + value = + reloc_stack[reloc_stack_tos - 2] << reloc_stack[reloc_stack_tos - + 1]; + reloc_stack_tos -= 2; + break; + } + case R_rshift: + { + value = + reloc_stack[reloc_stack_tos - 2] >> reloc_stack[reloc_stack_tos - + 1]; + reloc_stack_tos -= 2; + break; + } + case R_and: + { + value = + reloc_stack[reloc_stack_tos - 2] & reloc_stack[reloc_stack_tos - 1]; + reloc_stack_tos -= 2; + break; + } + case R_or: + { + value = + reloc_stack[reloc_stack_tos - 2] | reloc_stack[reloc_stack_tos - 1]; + reloc_stack_tos -= 2; + break; + } + case R_xor: + { + value = + reloc_stack[reloc_stack_tos - 2] ^ reloc_stack[reloc_stack_tos - 1]; + reloc_stack_tos -= 2; + break; + } + case R_land: + { + value = reloc_stack[reloc_stack_tos - 2] + && reloc_stack[reloc_stack_tos - 1]; + reloc_stack_tos -= 2; + break; + } + case R_lor: + { + value = reloc_stack[reloc_stack_tos - 2] + || reloc_stack[reloc_stack_tos - 1]; + reloc_stack_tos -= 2; + break; + } + case R_neg: + { + value = -reloc_stack[reloc_stack_tos - 1]; + reloc_stack_tos--; + break; + } + case R_comp: + { + value = ~reloc_stack[reloc_stack_tos - 1]; + reloc_stack_tos -= 1; + break; + } + default: + { + fprintf (stderr, "bfin relocation : Internal bug\n"); + return 0; + } + } + + reloc_stack_push (value); + + return value; +} + +/* FUNCTION : bfin_pltpc_reloc + ABSTRACT : TODO : figure out how to handle pltpc relocs. */ +static bfd_reloc_status_type +bfin_pltpc_reloc ( + 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) +{ + bfd_reloc_status_type flag = bfd_reloc_ok; + return flag; +} + + +static bfd_reloc_status_type +bfin_pcrel24_reloc (bfd *abfd, + arelent *reloc_entry, + asymbol *symbol, + PTR data, + asection *input_section, + bfd *output_bfd, + char **error_message ATTRIBUTE_UNUSED) +{ + bfd_vma relocation; + bfd_size_type addr = reloc_entry->address; + bfd_vma output_base = 0; + reloc_howto_type *howto = reloc_entry->howto; + asection *output_section; + bfd_boolean relocatable = (output_bfd != NULL); + + if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) + return bfd_reloc_outofrange; + + if (!is_reloc_stack_empty ()) + relocation = reloc_stack_pop(); + else + { + if (bfd_is_und_section (symbol->section) + && (symbol->flags & BSF_WEAK) == 0 + && !relocatable) + return bfd_reloc_undefined; + + if (bfd_is_com_section (symbol->section)) + relocation = 0; + else + relocation = symbol->value; + + output_section = symbol->section->output_section; + + if (relocatable) + output_base = 0; + else + output_base = output_section->vma; + + if (!relocatable || !strcmp (symbol->name, symbol->section->name)) + relocation += output_base + symbol->section->output_offset; + + if (!relocatable && !strcmp (symbol->name, symbol->section->name)) + relocation += reloc_entry->addend; + } + + relocation -= input_section->output_section->vma + input_section->output_offset; + relocation -= reloc_entry->address; + + if (howto->complain_on_overflow != complain_overflow_dont) + { + bfd_reloc_status_type status; + status= bfd_check_overflow (howto->complain_on_overflow, + howto->bitsize, + howto->rightshift, + bfd_arch_bits_per_address(abfd), + relocation); + if (status != bfd_reloc_ok) + return status; + } + + /* if rightshift is 1 and the number odd, return error. */ + if (howto->rightshift && (relocation & 0x01)) + { + fprintf(stderr, "relocation should be even number\n"); + return bfd_reloc_overflow; + } + + relocation >>= (bfd_vma) howto->rightshift; + /* Shift everything up to where it's going to be used. */ + + relocation <<= (bfd_vma) howto->bitpos; + + if (relocatable) + { + reloc_entry->address += input_section->output_offset; + reloc_entry->addend += symbol->section->output_offset; + } + + { + short x; + + /* We are getting reloc_entry->address 2 byte off from + the start of instruction. Assuming absolute postion + of the reloc data. But, following code had been written assuming + reloc address is starting at begining of instruction. + To compensate that I have increased the value of + relocation by 1 (effectively 2) and used the addr -2 instead of addr. */ + + relocation += 1; + x = bfd_get_16 (abfd, (bfd_byte *) data + addr - 2); + x = (x & 0xff00) | ((relocation >> 16) & 0xff); + bfd_put_16 (abfd, x, (unsigned char *) data + addr - 2); + + x = bfd_get_16 (abfd, (bfd_byte *) data + addr); + x = relocation & 0xFFFF; + bfd_put_16 (abfd, x, (unsigned char *) data + addr ); + } + return bfd_reloc_ok; +} + +static bfd_reloc_status_type +bfin_push_reloc (bfd *abfd ATTRIBUTE_UNUSED, + arelent *reloc_entry, + asymbol *symbol, + PTR data ATTRIBUTE_UNUSED, + asection *input_section, + bfd *output_bfd, + char **error_message ATTRIBUTE_UNUSED) +{ + bfd_vma relocation; + bfd_vma output_base = 0; + asection *output_section; + bfd_boolean relocatable = (output_bfd != NULL); + + if (bfd_is_und_section (symbol->section) + && (symbol->flags & BSF_WEAK) == 0 + && !relocatable) + return bfd_reloc_undefined; + + /* Is the address of the relocation really within the section? */ + if (reloc_entry->address > bfd_get_section_limit(abfd, input_section)) + return bfd_reloc_outofrange; + + output_section = symbol->section->output_section; + relocation = symbol->value; + + /* Convert input-section-relative symbol value to absolute. */ + if (relocatable) + output_base = 0; + else + output_base = output_section->vma; + + if (!relocatable || !strcmp(symbol->name, symbol->section->name)) + relocation += output_base + symbol->section->output_offset; + + /* Add in supplied addend. */ + relocation += reloc_entry->addend; + + if (relocatable) + { + reloc_entry->address += input_section->output_offset; + reloc_entry->addend += symbol->section->output_offset; + } + + /* Now that we have the value, push it. */ + reloc_stack_push (relocation); + + return bfd_reloc_ok; +} + +static bfd_reloc_status_type +bfin_oper_reloc (bfd *abfd ATTRIBUTE_UNUSED, + arelent *reloc_entry, + asymbol *symbol ATTRIBUTE_UNUSED, + PTR data ATTRIBUTE_UNUSED, + asection *input_section, + bfd *output_bfd, + char **error_message ATTRIBUTE_UNUSED) +{ + bfd_boolean relocatable = (output_bfd != NULL); + + /* Just call the operation based on the reloc_type. */ + reloc_stack_operate (reloc_entry->howto->type); + + if (relocatable) + reloc_entry->address += input_section->output_offset; + + return bfd_reloc_ok; +} + +static bfd_reloc_status_type +bfin_const_reloc (bfd *abfd ATTRIBUTE_UNUSED, + arelent *reloc_entry, + asymbol *symbol ATTRIBUTE_UNUSED, + PTR data ATTRIBUTE_UNUSED, + asection *input_section, + bfd *output_bfd, + char **error_message ATTRIBUTE_UNUSED) +{ + bfd_boolean relocatable = (output_bfd != NULL); + + /* Push the addend portion of the relocation. */ + reloc_stack_push (reloc_entry->addend); + + if (relocatable) + reloc_entry->address += input_section->output_offset; + + return bfd_reloc_ok; +} + +static bfd_reloc_status_type +bfin_imm16_reloc (bfd *abfd, + arelent *reloc_entry, + asymbol *symbol, + PTR data, + asection *input_section, + bfd *output_bfd, + char **error_message ATTRIBUTE_UNUSED) +{ + bfd_vma relocation, x; + bfd_size_type reloc_addr = reloc_entry->address; + bfd_vma output_base = 0; + reloc_howto_type *howto = reloc_entry->howto; + asection *output_section; + bfd_boolean relocatable = (output_bfd != NULL); + + /* Is the address of the relocation really within the section? */ + if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) + return bfd_reloc_outofrange; + + if (is_reloc_stack_empty ()) + { + if (bfd_is_und_section (symbol->section) + && (symbol->flags & BSF_WEAK) == 0 + && !relocatable) + return bfd_reloc_undefined; + + output_section = symbol->section->output_section; + relocation = symbol->value; + + /* Convert input-section-relative symbol value to absolute. */ + if (relocatable) + output_base = 0; + else + output_base = output_section->vma; + + if (!relocatable || !strcmp (symbol->name, symbol->section->name)) + relocation += output_base + symbol->section->output_offset; + + if (symbol->flags & BSF_SECTION_SYM) + { + /* Add in supplied addend. */ + relocation += reloc_entry->addend; + } + } + else + { + relocation = reloc_stack_pop (); + } + + if (relocatable) + { + reloc_entry->address += input_section->output_offset; + reloc_entry->addend += symbol->section->output_offset; + } + else + { + reloc_entry->addend = 0; + } + + if (howto->complain_on_overflow != complain_overflow_dont) + { + bfd_reloc_status_type flag; + flag = bfd_check_overflow (howto->complain_on_overflow, + howto->bitsize, + howto->rightshift, + bfd_arch_bits_per_address(abfd), + relocation); + if (flag != bfd_reloc_ok) + return flag; + } + + + /* Here the variable relocation holds the final address of the + symbol we are relocating against, plus any addend. */ + + x = bfd_get_16 (abfd, (bfd_byte *) data + reloc_addr); + relocation >>= (bfd_vma) howto->rightshift; + x = relocation; + bfd_put_16 (abfd, x, (unsigned char *) data + reloc_addr); + return bfd_reloc_ok; +} + + +static bfd_reloc_status_type +bfin_byte4_reloc (bfd *abfd, + arelent *reloc_entry, + asymbol *symbol, + PTR data, + asection *input_section, + bfd *output_bfd, + char **error_message ATTRIBUTE_UNUSED) +{ + bfd_vma relocation, x; + bfd_size_type addr = reloc_entry->address; + bfd_vma output_base = 0; + asection *output_section; + bfd_boolean relocatable = (output_bfd != NULL); + + /* Is the address of the relocation really within the section? */ + if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) + return bfd_reloc_outofrange; + + if (is_reloc_stack_empty ()) + { + if (bfd_is_und_section (symbol->section) + && (symbol->flags & BSF_WEAK) == 0 + && !relocatable) + return bfd_reloc_undefined; + + output_section = symbol->section->output_section; + relocation = symbol->value; + /* Convert input-section-relative symbol value to absolute. */ + if (relocatable) + output_base = 0; + else + output_base = output_section->vma; + + if ((symbol->name + && symbol->section->name + && !strcmp (symbol->name, symbol->section->name)) + || !relocatable) + { + relocation += output_base + symbol->section->output_offset; + } + + relocation += reloc_entry->addend; + } + else + { + relocation = reloc_stack_pop(); + relocation += reloc_entry->addend; + } + + if (relocatable) + { + /* This output will be relocatable ... like ld -r. */ + reloc_entry->address += input_section->output_offset; + reloc_entry->addend += symbol->section->output_offset; + } + else + { + reloc_entry->addend = 0; + } + + /* Here the variable relocation holds the final address of the + symbol we are relocating against, plus any addend. */ + x = relocation & 0xFFFF0000; + x >>=16; + bfd_put_16 (abfd, x, (unsigned char *) data + addr + 2); + + x = relocation & 0x0000FFFF; + bfd_put_16 (abfd, x, (unsigned char *) data + addr); + return bfd_reloc_ok; +} + +/* bfin_bfd_reloc handles the blackfin arithmetic relocations. + Use this instead of bfd_perform_relocation. */ +static bfd_reloc_status_type +bfin_bfd_reloc (bfd *abfd, + arelent *reloc_entry, + asymbol *symbol, + PTR data, + asection *input_section, + bfd *output_bfd, + char **error_message ATTRIBUTE_UNUSED) +{ + bfd_vma relocation; + bfd_size_type addr = reloc_entry->address; + bfd_vma output_base = 0; + reloc_howto_type *howto = reloc_entry->howto; + asection *output_section; + bfd_boolean relocatable = (output_bfd != NULL); + + /* Is the address of the relocation really within the section? */ + if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) + return bfd_reloc_outofrange; + + if (is_reloc_stack_empty()) + { + if (bfd_is_und_section (symbol->section) + && (symbol->flags & BSF_WEAK) == 0 + && !relocatable) + return bfd_reloc_undefined; + + /* Get symbol value. (Common symbols are special.) */ + if (bfd_is_com_section (symbol->section)) + relocation = 0; + else + relocation = symbol->value; + + output_section = symbol->section->output_section; + + /* Convert input-section-relative symbol value to absolute. */ + if (relocatable) + output_base = 0; + else + output_base = output_section->vma; + + if (!relocatable || !strcmp (symbol->name, symbol->section->name)) + relocation += output_base + symbol->section->output_offset; + + if (!relocatable && !strcmp (symbol->name, symbol->section->name)) + { + /* Add in supplied addend. */ + relocation += reloc_entry->addend; + } + + } + else + { + relocation = reloc_stack_pop(); + } + + /* Here the variable relocation holds the final address of the + symbol we are relocating against, plus any addend. */ + + if (howto->pc_relative == TRUE) + { + relocation -= input_section->output_section->vma + input_section->output_offset; + + if (howto->pcrel_offset == TRUE) + relocation -= reloc_entry->address; + } + + if (relocatable) + { + reloc_entry->address += input_section->output_offset; + reloc_entry->addend += symbol->section->output_offset; + } + + if (howto->complain_on_overflow != complain_overflow_dont) + { + bfd_reloc_status_type status; + + status = bfd_check_overflow (howto->complain_on_overflow, + howto->bitsize, + howto->rightshift, + bfd_arch_bits_per_address(abfd), + relocation); + if (status != bfd_reloc_ok) + return status; + } + + /* If rightshift is 1 and the number odd, return error. */ + if (howto->rightshift && (relocation & 0x01)) + { + fprintf(stderr, "relocation should be even number\n"); + return bfd_reloc_overflow; + } + + relocation >>= (bfd_vma) howto->rightshift; + + /* Shift everything up to where it's going to be used. */ + + relocation <<= (bfd_vma) howto->bitpos; + +#define DOIT(x) \ + x = ( (x & ~howto->dst_mask) | (relocation & howto->dst_mask)) + + /* handle 8 and 16 bit relocations here. */ + switch (howto->size) + { + case 0: + { + char x = bfd_get_8 (abfd, (char *) data + addr); + DOIT (x); + bfd_put_8 (abfd, x, (unsigned char *) data + addr); + } + break; + + case 1: + { + unsigned short x = bfd_get_16 (abfd, (bfd_byte *) data + addr); + DOIT (x); + bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data + addr); + } + break; + + default: + return bfd_reloc_other; + } + + return bfd_reloc_ok; +} + +#if 0 +static bfd_reloc_status_type bfin_bfd_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); + +static bfd_reloc_status_type bfin_imm16_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); + +static bfd_reloc_status_type bfin_pcrel24_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); + +static bfd_reloc_status_type bfin_pltpc_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); + +static bfd_reloc_status_type bfin_const_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); + +static bfd_reloc_status_type bfin_oper_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); + +static bfd_reloc_status_type bfin_byte4_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); + +static bfd_reloc_status_type bfin_push_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); + +static bfd_boolean bfin_is_local_label_name + PARAMS ((bfd *, const char *)); +#endif +bfd_boolean bfd_bfin_elf32_create_embedded_relocs + PARAMS ((bfd *, struct bfd_link_info *, asection *, asection *, char **)); + + +/* HOWTO Table for blackfin. + Blackfin relocations are fairly complicated. + Some of the salient features are + a. Even numbered offsets. A number of (not all) relocations are + even numbered. This means that the rightmost bit is not stored. + Needs to right shift by 1 and check to see if value is not odd + b. A relocation can be an expression. An expression takes on + a variety of relocations arranged in a stack. + As a result, we cannot use the standard generic function as special + function. We will have our own, which is very similar to the standard + generic function except that it understands how to get the value from + the relocation stack. . */ + +#define BFIN_RELOC_MIN 0 +#define BFIN_RELOC_MAX 0x13 +#define BFIN_GNUEXT_RELOC_MIN 0x40 +#define BFIN_GNUEXT_RELOC_MAX 0x43 +#define BFIN_ARELOC_MIN 0xE0 +#define BFIN_ARELOC_MAX 0xF3 + +static reloc_howto_type bfin_howto_table [] = +{ + /* This reloc does nothing. . */ + HOWTO (R_unused0, /* type. */ + 0, /* rightshift. */ + 2, /* size (0 = byte, 1 = short, 2 = long). */ + 32, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_bitfield, /* complain_on_overflow. */ + bfd_elf_generic_reloc, /* special_function. */ + "R_unused0", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_pcrel5m2, /* type. */ + 1, /* rightshift. */ + 1, /* size (0 = byte, 1 = short, 2 = long).. */ + 4, /* bitsize. */ + TRUE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_unsigned, /* complain_on_overflow. */ + bfin_bfd_reloc, /* special_function. */ + "R_pcrel5m2", /* name. */ + FALSE, /* partial_inplace. */ + 0x0000000F, /* src_mask. */ + 0x0000000F, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_unused1, /* type. */ + 0, /* rightshift. */ + 2, /* size (0 = byte, 1 = short, 2 = long). */ + 32, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_bitfield, /* complain_on_overflow. */ + bfd_elf_generic_reloc, /* special_function. */ + "R_unused1", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_pcrel10, /* type. */ + 1, /* rightshift. */ + 1, /* size (0 = byte, 1 = short, 2 = long). */ + 10, /* bitsize. */ + TRUE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_signed, /* complain_on_overflow. */ + bfin_bfd_reloc, /* special_function. */ + "R_pcrel10", /* name. */ + FALSE, /* partial_inplace. */ + 0x000003FF, /* src_mask. */ + 0x000003FF, /* dst_mask. */ + TRUE), /* pcrel_offset. */ + + HOWTO (R_pcrel12_jump, /* type. */ + 1, /* rightshift. */ + /* the offset is actually 13 bit + aligned on a word boundary so + only 12 bits have to be used. + Right shift the rightmost bit.. */ + 1, /* size (0 = byte, 1 = short, 2 = long). */ + 12, /* bitsize. */ + TRUE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_signed, /* complain_on_overflow. */ + bfin_bfd_reloc, /* special_function. */ + "R_pcrel12_jump", /* name. */ + FALSE, /* partial_inplace. */ + 0x0FFF, /* src_mask. */ + 0x0FFF, /* dst_mask. */ + TRUE), /* pcrel_offset. */ + + HOWTO (R_rimm16, /* type. */ + 0, /* rightshift. */ + 1, /* size (0 = byte, 1 = short, 2 = long). */ + 16, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_signed, /* complain_on_overflow. */ + bfin_imm16_reloc, /* special_function. */ + "R_rimm16", /* name. */ + FALSE, /* partial_inplace. */ + 0x0000FFFF, /* src_mask. */ + 0x0000FFFF, /* dst_mask. */ + TRUE), /* pcrel_offset. */ + + HOWTO (R_luimm16, /* type. */ + 0, /* rightshift. */ + 1, /* size (0 = byte, 1 = short, 2 = long). */ + 16, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_imm16_reloc, /* special_function. */ + "R_luimm16", /* name. */ + FALSE, /* partial_inplace. */ + 0x0000FFFF, /* src_mask. */ + 0x0000FFFF, /* dst_mask. */ + TRUE), /* pcrel_offset. */ + + HOWTO (R_huimm16, /* type. */ + 16, /* rightshift. */ + 1, /* size (0 = byte, 1 = short, 2 = long). */ + 16, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_unsigned, /* complain_on_overflow. */ + bfin_imm16_reloc, /* special_function. */ + "R_huimm16", /* name. */ + FALSE, /* partial_inplace. */ + 0x0000FFFF, /* src_mask. */ + 0x0000FFFF, /* dst_mask. */ + TRUE), /* pcrel_offset. */ + + HOWTO (R_pcrel12_jump_s, /* type. */ + 1, /* rightshift. */ + 1, /* size (0 = byte, 1 = short, 2 = long). */ + 12, /* bitsize. */ + TRUE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_signed, /* complain_on_overflow. */ + bfin_bfd_reloc, /* special_function. */ + "R_pcrel12_jump_s", /* name. */ + FALSE, /* partial_inplace. */ + 0x00000FFF, /* src_mask. */ + 0x00000FFF, /* dst_mask. */ + TRUE), /* pcrel_offset. */ + + HOWTO (R_pcrel24_jump_x, /* type. */ + 1, /* rightshift. */ + 2, /* size (0 = byte, 1 = short, 2 = long). */ + 24, /* bitsize. */ + TRUE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_signed, /* complain_on_overflow. */ + bfin_pcrel24_reloc, /* special_function. */ + "R_pcrel24_jump_x", /* name. */ + FALSE, /* partial_inplace. */ + 0x00FFFFFF, /* src_mask. */ + 0x00FFFFFF, /* dst_mask. */ + TRUE), /* pcrel_offset. */ + + HOWTO (R_pcrel24, /* type. */ + 1, /* rightshift. */ + 2, /* size (0 = byte, 1 = short, 2 = long). */ + 24, /* bitsize. */ + TRUE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_signed, /* complain_on_overflow. */ + bfin_pcrel24_reloc, /* special_function. */ + "R_pcrel24", /* name. */ + FALSE, /* partial_inplace. */ + 0x00FFFFFF, /* src_mask. */ + 0x00FFFFFF, /* dst_mask. */ + TRUE), /* pcrel_offset. */ + + HOWTO (R_unusedb, /* type. */ + 0, /* rightshift. */ + 2, /* size (0 = byte, 1 = short, 2 = long). */ + 32, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfd_elf_generic_reloc, /* special_function. */ + "R_unusedb", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_unusedc, /* type. */ + 0, /* rightshift. */ + 2, /* size (0 = byte, 1 = short, 2 = long). */ + 32, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfd_elf_generic_reloc, /* special_function. */ + "R_unusedc", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_pcrel24_jump_l, /* type. */ + 1, /* rightshift. */ + 2, /* size (0 = byte, 1 = short, 2 = long). */ + 24, /* bitsize. */ + TRUE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_signed, /* complain_on_overflow. */ + bfin_pcrel24_reloc, /* special_function. */ + "R_pcrel24_jump_l", /* name. */ + FALSE, /* partial_inplace. */ + 0x00FFFFFF, /* src_mask. */ + 0x00FFFFFF, /* dst_mask. */ + TRUE), /* pcrel_offset. */ + + HOWTO (R_pcrel24_call_x, /* type. */ + 1, /* rightshift. */ + 2, /* size (0 = byte, 1 = short, 2 = long). */ + 24, /* bitsize. */ + TRUE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_signed, /* complain_on_overflow. */ + bfin_pcrel24_reloc, /* special_function. */ + "R_pcrel24_call_x", /* name. */ + FALSE, /* partial_inplace. */ + 0x00FFFFFF, /* src_mask. */ + 0x00FFFFFF, /* dst_mask. */ + TRUE), /* pcrel_offset. */ + + HOWTO (R_var_eq_symb, /* type. */ + 0, /* rightshift. */ + 2, /* size (0 = byte, 1 = short, 2 = long). */ + 32, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_bitfield, /* complain_on_overflow. */ + bfin_bfd_reloc, /* special_function. */ + "R_var_eq_symb", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_byte_data, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 8, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_unsigned, /* complain_on_overflow. */ + bfin_bfd_reloc, /* special_function. */ + "R_byte_data", /* name. */ + FALSE, /* partial_inplace. */ + 0xFF, /* src_mask. */ + 0xFF, /* dst_mask. */ + TRUE), /* pcrel_offset. */ + + HOWTO (R_byte2_data, /* type. */ + 0, /* rightshift. */ + 1, /* size (0 = byte, 1 = short, 2 = long). */ + 16, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_signed, /* complain_on_overflow. */ + bfin_bfd_reloc, /* special_function. */ + "R_byte2_data", /* name. */ + FALSE, /* partial_inplace. */ + 0xFFFF, /* src_mask. */ + 0xFFFF, /* dst_mask. */ + TRUE), /* pcrel_offset. */ + + HOWTO (R_byte4_data, /* type. */ + 0, /* rightshift. */ + 2, /* size (0 = byte, 1 = short, 2 = long). */ + 32, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_unsigned, /* complain_on_overflow. */ + bfin_byte4_reloc, /* special_function. */ + "R_byte4_data", /* name. */ + FALSE, /* partial_inplace. */ + 0xFFFFFFFF, /* src_mask. */ + 0xFFFFFFFF, /* dst_mask. */ + TRUE), /* pcrel_offset. */ + + HOWTO (R_pcrel11, /* type. */ + 1, /* rightshift. */ + 1, /* size (0 = byte, 1 = short, 2 = long). */ + 10, /* bitsize. */ + TRUE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_unsigned, /* complain_on_overflow. */ + bfin_bfd_reloc, /* special_function. */ + "R_pcrel11", /* name. */ + FALSE, /* partial_inplace. */ + 0x000003FF, /* src_mask. */ + 0x000003FF, /* dst_mask. */ + FALSE), /* pcrel_offset. */ +}; + +static reloc_howto_type bfin_areloc_howto_table [] = +{ + HOWTO (R_push, + 0, + 2, + 0, + FALSE, + 0, + complain_overflow_dont, + bfin_push_reloc, + "R_expst_push", + FALSE, + 0, + 0, + FALSE), + + HOWTO (R_const, + 0, + 2, + 0, + FALSE, + 0, + complain_overflow_dont, + bfin_const_reloc, + "R_expst_const", + FALSE, + 0, + 0, + FALSE), + + HOWTO (R_add, + 0, + 0, + 0, + FALSE, + 0, + complain_overflow_dont, + bfin_oper_reloc, + "R_expst_add", + FALSE, + 0, + 0, + FALSE), + + HOWTO (R_sub, + 0, + 0, + 0, + FALSE, + 0, + complain_overflow_dont, + bfin_oper_reloc, + "R_expst_sub", + FALSE, + 0, + 0, + FALSE), + + HOWTO (R_mult, + 0, + 0, + 0, + FALSE, + 0, + complain_overflow_dont, + bfin_oper_reloc, + "R_expst_mult", + FALSE, + 0, + 0, + FALSE), + + HOWTO (R_div, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_oper_reloc, /* special_function. */ + "R_expst_div", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_mod, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_oper_reloc, /* special_function. */ + "R_expst_mod", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_lshift, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_oper_reloc, /* special_function. */ + "R_expst_lshift", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_rshift, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_oper_reloc, /* special_function. */ + "R_expst_rshift", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_and, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_oper_reloc, /* special_function. */ + "R_expst_and", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_or, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_oper_reloc, /* special_function. */ + "R_expst_or", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_xor, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_oper_reloc, /* special_function. */ + "R_expst_xor", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_land, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_oper_reloc, /* special_function. */ + "R_expst_land", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_lor, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_oper_reloc, /* special_function. */ + "R_expst_lor", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_len, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_oper_reloc, /* special_function. */ + "R_expst_len", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_neg, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_oper_reloc, /* special_function. */ + "R_expst_neg", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_comp, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_oper_reloc, /* special_function. */ + "R_expst_comp", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_page, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_oper_reloc, /* special_function. */ + "R_expst_page", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_hwpage, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_oper_reloc, /* special_function. */ + "R_expst_hwpage", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_addr, /* type. */ + 0, /* rightshift. */ + 0, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + bfin_oper_reloc, /* special_function. */ + "R_expst_addr", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ +}; + +static reloc_howto_type bfin_gnuext_howto_table [] = +{ + HOWTO (R_pltpc, /* type. */ + 0, /* rightshift. */ + 1, /* size (0 = byte, 1 = short, 2 = long). */ + 16, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_bitfield, /* complain_on_overflow. */ + bfin_pltpc_reloc, /* special_function. */ + "R_pltpc", /* name. */ + FALSE, /* partial_inplace. */ + 0xffff, /* src_mask. */ + 0xffff, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + + HOWTO (R_got, /* type. */ + 0, /* rightshift. */ + 1, /* size (0 = byte, 1 = short, 2 = long). */ + 16, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_bitfield, /* complain_on_overflow. */ + bfd_elf_generic_reloc, /* special_function. */ + "R_got", /* name. */ + FALSE, /* partial_inplace. */ + 0x7fff, /* src_mask. */ + 0x7fff, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + +/* GNU extension to record C++ vtable hierarchy. */ + HOWTO (R_BFIN_GNU_VTINHERIT, /* type. */ + 0, /* rightshift. */ + 2, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + NULL, /* special_function. */ + "R_BFIN_GNU_VTINHERIT", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE), /* pcrel_offset. */ + +/* GNU extension to record C++ vtable member usage. */ + HOWTO (R_BFIN_GNU_VTENTRY, /* type. */ + 0, /* rightshift. */ + 2, /* size (0 = byte, 1 = short, 2 = long). */ + 0, /* bitsize. */ + FALSE, /* pc_relative. */ + 0, /* bitpos. */ + complain_overflow_dont, /* complain_on_overflow. */ + _bfd_elf_rel_vtable_reloc_fn, /* special_function. */ + "R_BFIN_GNU_VTENTRY", /* name. */ + FALSE, /* partial_inplace. */ + 0, /* src_mask. */ + 0, /* dst_mask. */ + FALSE) /* pcrel_offset. */ +}; + +struct bfin_reloc_map +{ + bfd_reloc_code_real_type bfd_reloc_val; + unsigned int bfin_reloc_val; +}; + +static const struct bfin_reloc_map bfin_reloc_map [] = +{ + { BFD_RELOC_NONE, R_unused0 }, + { BFD_RELOC_BFIN_5_PCREL, R_pcrel5m2 }, + { BFD_RELOC_NONE, R_unused1 }, + { BFD_RELOC_BFIN_10_PCREL, R_pcrel10 }, + { BFD_RELOC_BFIN_12_PCREL_JUMP, R_pcrel12_jump }, + { BFD_RELOC_BFIN_16_IMM, R_rimm16 }, + { BFD_RELOC_BFIN_16_LOW, R_luimm16 }, + { BFD_RELOC_BFIN_16_HIGH, R_huimm16 }, + { BFD_RELOC_BFIN_12_PCREL_JUMP_S, R_pcrel12_jump_s }, + { BFD_RELOC_24_PCREL, R_pcrel24 }, + { BFD_RELOC_24_PCREL, R_pcrel24 }, + { BFD_RELOC_BFIN_24_PCREL_JUMP_L, R_pcrel24_jump_l }, + { BFD_RELOC_NONE, R_unusedb }, + { BFD_RELOC_NONE, R_unusedc }, + { BFD_RELOC_BFIN_24_PCREL_CALL_X, R_pcrel24_call_x }, + { BFD_RELOC_8, R_byte_data }, + { BFD_RELOC_16, R_byte2_data }, + { BFD_RELOC_32, R_byte4_data }, + { BFD_RELOC_BFIN_11_PCREL, R_pcrel11 }, + { BFD_RELOC_BFIN_GOT, R_got }, + { BFD_RELOC_BFIN_PLTPC, R_pltpc }, + { BFD_RELOC_VTABLE_INHERIT, R_BFIN_GNU_VTINHERIT }, + { BFD_RELOC_VTABLE_ENTRY, R_BFIN_GNU_VTENTRY }, + { BFD_ARELOC_BFIN_PUSH, R_push }, + { BFD_ARELOC_BFIN_CONST, R_const }, + { BFD_ARELOC_BFIN_ADD, R_add }, + { BFD_ARELOC_BFIN_SUB, R_sub }, + { BFD_ARELOC_BFIN_MULT, R_mult }, + { BFD_ARELOC_BFIN_DIV, R_div }, + { BFD_ARELOC_BFIN_MOD, R_mod }, + { BFD_ARELOC_BFIN_LSHIFT, R_lshift }, + { BFD_ARELOC_BFIN_RSHIFT, R_rshift }, + { BFD_ARELOC_BFIN_AND, R_and }, + { BFD_ARELOC_BFIN_OR, R_or }, + { BFD_ARELOC_BFIN_XOR, R_xor }, + { BFD_ARELOC_BFIN_LAND, R_land }, + { BFD_ARELOC_BFIN_LOR, R_lor }, + { BFD_ARELOC_BFIN_LEN, R_len }, + { BFD_ARELOC_BFIN_NEG, R_neg }, + { BFD_ARELOC_BFIN_COMP, R_comp }, + { BFD_ARELOC_BFIN_PAGE, R_page }, + { BFD_ARELOC_BFIN_HWPAGE, R_hwpage }, + { BFD_ARELOC_BFIN_ADDR, R_addr } + +}; + + +static void +bfin_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, + arelent *cache_ptr, + Elf_Internal_Rela *dst) +{ + unsigned int r_type; + + r_type = ELF32_R_TYPE (dst->r_info); + + if (r_type <= BFIN_RELOC_MAX) + cache_ptr->howto = &bfin_howto_table [r_type]; + + else if (r_type >= BFIN_ARELOC_MIN && r_type <= BFIN_ARELOC_MAX) + cache_ptr->howto = &bfin_areloc_howto_table [r_type - BFIN_ARELOC_MIN]; + + else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) + cache_ptr->howto = &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; + + else + cache_ptr->howto = (reloc_howto_type *) NULL; + +} +/* Given a BFD reloc type, return the howto. */ +static reloc_howto_type * +bfin_bfd_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, + bfd_reloc_code_real_type code) +{ + unsigned int i; + unsigned int r_type = BFIN_RELOC_MIN; + + for (i = sizeof (bfin_reloc_map) / sizeof (bfin_reloc_map[0]); --i;) + if (bfin_reloc_map[i].bfd_reloc_val == code) + r_type = bfin_reloc_map[i].bfin_reloc_val; + + if (r_type <= BFIN_RELOC_MAX && r_type > BFIN_RELOC_MIN) + return &bfin_howto_table [r_type]; + + else if (r_type >= BFIN_ARELOC_MIN && r_type <= BFIN_ARELOC_MAX) + return &bfin_areloc_howto_table [r_type - BFIN_ARELOC_MIN]; + + else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) + return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; + + return (reloc_howto_type *) NULL; + +} +/* Given a bfin relocation type, return the howto. */ +static reloc_howto_type * +bfin_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, + unsigned int r_type) +{ + if (r_type <= BFIN_RELOC_MAX) + return &bfin_howto_table [r_type]; + + else if (r_type >= BFIN_ARELOC_MIN && r_type <= BFIN_ARELOC_MAX) + return &bfin_areloc_howto_table [r_type - BFIN_ARELOC_MIN]; + + else if (r_type >= BFIN_GNUEXT_RELOC_MIN && r_type <= BFIN_GNUEXT_RELOC_MAX) + return &bfin_gnuext_howto_table [r_type - BFIN_GNUEXT_RELOC_MIN]; + + return (reloc_howto_type *) NULL; + +} + +/* Return TRUE if the name is a local label. + bfin local labels begin with L$. */ +static bfd_boolean +bfin_is_local_label_name ( + bfd *abfd ATTRIBUTE_UNUSED, + const char *label) +{ + if (label[0] == 'L' && label[1] == '$' ) + return TRUE; + + return _bfd_elf_is_local_label_name (abfd, label); +} + + +/* Look through the relocs for a section during the first phase, and + allocate space in the global offset table or procedure linkage + table. */ + +static bfd_boolean +bfin_check_relocs (bfd * abfd, + struct bfd_link_info *info, + asection *sec, + const Elf_Internal_Rela *relocs) +{ + bfd *dynobj; + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_signed_vma *local_got_refcounts; + const Elf_Internal_Rela *rel; + const Elf_Internal_Rela *rel_end; + asection *sgot; + asection *srelgot; + asection *sreloc; + if (info->relocatable) + return TRUE; + + dynobj = elf_hash_table (info)->dynobj; + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + local_got_refcounts = elf_local_got_refcounts (abfd); + + sgot = NULL; + srelgot = NULL; + sreloc = NULL; + + rel_end = relocs + sec->reloc_count; + for (rel = relocs; rel < rel_end; rel++) + { + unsigned long r_symndx; + struct elf_link_hash_entry *h; + + r_symndx = ELF32_R_SYM (rel->r_info); + if (r_symndx < symtab_hdr->sh_info) + h = NULL; + else + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + + switch (ELF32_R_TYPE (rel->r_info)) + { + /* This relocation describes the C++ object vtable hierarchy. + Reconstruct it for later use during GC. */ + case R_BFIN_GNU_VTINHERIT: + if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) + return FALSE; + break; + + /* This relocation describes which C++ vtable entries + are actually used. Record for later use during GC. */ + case R_BFIN_GNU_VTENTRY: + if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) + return FALSE; + break; + + case R_got: + if (h != NULL + && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) + break; + /* Fall through. */ + + if (dynobj == NULL) + { + /* Create the .got section. */ + elf_hash_table (info)->dynobj = dynobj = abfd; + if (!_bfd_elf_create_got_section (dynobj, info)) + return FALSE; + } + + if (sgot == NULL) + { + sgot = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + } + + if (srelgot == NULL && (h != NULL || info->shared)) + { + srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); + if (srelgot == NULL) + { + srelgot = bfd_make_section (dynobj, ".rela.got"); + if (srelgot == NULL + || !bfd_set_section_flags (dynobj, srelgot, + (SEC_ALLOC + | SEC_LOAD + | SEC_HAS_CONTENTS + | SEC_IN_MEMORY + | SEC_LINKER_CREATED + | SEC_READONLY)) + || !bfd_set_section_alignment (dynobj, srelgot, 2)) + return FALSE; + } + } + + if (h != NULL) + { + if (h->got.refcount == 0) + { + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1 && !h->forced_local) + { + if (!bfd_elf_link_record_dynamic_symbol (info, h)) + return FALSE; + } + + /* Allocate space in the .got section. */ + sgot->size += 4; + /* Allocate relocation space. */ + srelgot->size += sizeof (Elf32_External_Rela); + } + h->got.refcount++; + } + else + { + /* This is a global offset table entry for a local symbol. */ + if (local_got_refcounts == NULL) + { + bfd_size_type size; + + size = symtab_hdr->sh_info; + size *= sizeof (bfd_signed_vma); + local_got_refcounts = ((bfd_signed_vma *) + bfd_zalloc (abfd, size)); + if (local_got_refcounts == NULL) + return FALSE; + elf_local_got_refcounts (abfd) = local_got_refcounts; + } + if (local_got_refcounts[r_symndx] == 0) + { + sgot->size += 4; + if (info->shared) + { + /* If we are generating a shared object, we need to + output a R_68K_RELATIVE reloc so that the dynamic + linker can adjust this GOT entry. */ + srelgot->size += sizeof (Elf32_External_Rela); + } + } + local_got_refcounts[r_symndx]++; + } + break; + + default: + break; + } + } + + return TRUE; +} + +static enum elf_reloc_type_class +elf32_bfin_reloc_type_class (const Elf_Internal_Rela * rela) +{ + switch ((int) ELF32_R_TYPE (rela->r_info)) + { + default: + return reloc_class_normal; + } +} +static bfd_boolean +bfin_relocate_section (bfd * output_bfd, + struct bfd_link_info *info, + bfd * input_bfd, + asection * input_section, + bfd_byte * contents, + Elf_Internal_Rela * relocs, + Elf_Internal_Sym * local_syms, + asection ** local_sections) +{ + bfd *dynobj; + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_vma *local_got_offsets; + asection *sgot; + asection *sreloc; + Elf_Internal_Rela *rel; + Elf_Internal_Rela *relend; + char *error_msg = NULL; + int i = 0; + + if (info->relocatable) + return TRUE; + + dynobj = elf_hash_table (info)->dynobj; + symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (input_bfd); + local_got_offsets = elf_local_got_offsets (input_bfd); + + sgot = NULL; + sreloc = NULL; + + rel = relocs; + relend = relocs + input_section->reloc_count; + for (; rel < relend; rel++, i++) + { + int r_type; + reloc_howto_type *howto; + unsigned long r_symndx; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; + asection *sec; + bfd_vma relocation = 0; + bfd_boolean unresolved_reloc; + bfd_reloc_status_type r; + + r_type = ELF32_R_TYPE (rel->r_info); + if (r_type < 0 || r_type >= 243) + { + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + + if (r_type == R_BFIN_GNU_VTENTRY + || r_type == R_BFIN_GNU_VTINHERIT) + continue; + + howto = bfin_reloc_type_lookup (input_bfd, r_type); + if (howto == NULL) + { + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + r_symndx = ELF32_R_SYM (rel->r_info); + + h = NULL; + sym = NULL; + sec = NULL; + unresolved_reloc = FALSE; + + if (r_symndx < symtab_hdr->sh_info) + { + sym = local_syms + r_symndx; + sec = local_sections[r_symndx]; + relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); + /* Call to bfd_elf_rela_local_sym would have CHANGED the sec + as well as updated relocation. The value returned is + w.r.t the original section. */ + sec = local_sections[r_symndx]; + } + 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; + + if (! + (!strcmp (h->root.root.string, ".__constant") + || !strcmp (h->root.root.string, ".__operator"))) + { + bfd_boolean warned; + h = NULL; + RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, + r_symndx, symtab_hdr, sym_hashes, + h, sec, relocation, + unresolved_reloc, warned); + + } + } + + switch (r_type) + { + case R_BFIN_GNU_VTINHERIT: + case R_BFIN_GNU_VTENTRY: + return bfd_reloc_ok; + + case R_got: + /* Relocation is to the address of the entry for this symbol + in the global offset table. */ + if (h != NULL + && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) + break; + /* Fall through. */ + /* Relocation is the offset of the entry for this symbol in + the global offset table. */ + + { + bfd_vma off; + + if (sgot == NULL) + { + sgot = bfd_get_section_by_name (dynobj, ".got"); + BFD_ASSERT (sgot != NULL); + } + + if (h != NULL) + { + bfd_boolean dyn; + + off = h->got.offset; + BFD_ASSERT (off != (bfd_vma) - 1); + + dyn = elf_hash_table (info)->dynamic_sections_created; + if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) + || (info->shared + && (info->symbolic + || h->dynindx == -1 + || h->forced_local) && h->def_regular)) + { + /* This is actually a static link, or it is a + -Bsymbolic link and the symbol is defined + locally, or the symbol was forced to be local + because of a version file.. We must initialize + this entry in the global offset table. Since + the offset must always be a multiple of 4, we + use the least significant bit to record whether + we have initialized it already. + + When doing a dynamic link, we create a .rela.got + relocation entry to initialize the value. This + is done in the finish_dynamic_symbol routine. */ + if ((off & 1) != 0) + off &= ~1; + else + { + bfd_put_32 (output_bfd, relocation, + sgot->contents + off); + h->got.offset |= 1; + } + } + else + unresolved_reloc = FALSE; + } + else + { + BFD_ASSERT (local_got_offsets != NULL + && local_got_offsets[r_symndx] != (bfd_vma) - 1); + + off = local_got_offsets[r_symndx]; + + /* The offset must always be a multiple of 4. We use + the least significant bit to record whether we have + already generated the necessary reloc. */ + if ((off & 1) != 0) + off &= ~1; + else + { + + bfd_put_32 (output_bfd, relocation, sgot->contents + off); + + if (info->shared) + { + asection *s; + Elf_Internal_Rela outrel; + bfd_byte *loc; + + s = bfd_get_section_by_name (dynobj, ".rela.got"); + BFD_ASSERT (s != NULL); + + outrel.r_offset = (sgot->output_section->vma + + sgot->output_offset + off); + outrel.r_info = + ELF32_R_INFO (0, R_pcrel24); + outrel.r_addend = relocation; + loc = s->contents; + loc += + s->reloc_count++ * sizeof (Elf32_External_Rela); + bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); + } + + local_got_offsets[r_symndx] |= 1; + } + } + + relocation = sgot->output_offset + off; + rel->r_addend = 0; + /* bfin : preg = [preg + 17bitdiv4offset] relocation is div by 4. */ + relocation /= 4; + } + break; + + default: + if (howto->special_function) + { + bfd_reloc_status_type cont; + arelent reloc_ent; + asymbol symbol; + asymbol *symbol1; + symbol.flags = 0; + symbol.section = bfd_und_section_ptr; + symbol.value = 0; + + if (h != NULL) + { + if (unresolved_reloc) + { + break; + } + if (h->root.type != bfd_link_hash_undefweak + && h->root.type != bfd_link_hash_undefined) + { + symbol.the_bfd = input_bfd; + symbol.section = h->root.u.def.section; + symbol.name = h->root.root.string; + symbol.value = h->root.u.def.value; + } + if (h->root.type == bfd_link_hash_defweak + || h->root.type == bfd_link_hash_undefweak) + { + symbol.name = h->root.root.string; + symbol.flags |= BSF_WEAK; + } + } + else + { + symbol = *sec->symbol; + } + reloc_ent.address = rel->r_offset; + reloc_ent.howto = howto; + reloc_ent.addend = rel->r_addend; + symbol1 = &symbol; + reloc_ent.sym_ptr_ptr = &symbol1; + + cont = + howto->special_function (input_bfd, &reloc_ent, &symbol, + contents, input_section, + info-> + relocatable ? output_bfd : NULL, + &error_msg); + if (cont == bfd_reloc_ok) + { + continue; + } + } + else + { + fprintf (stderr, "%s no special func r_type is %d\n", + input_bfd->filename, r_type); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + break; + } + + /* Dynamic relocs are not propagated for SEC_DEBUGGING sections + because such sections are not SEC_ALLOC and thus ld.so will + not process them. */ + if (unresolved_reloc + && !((input_section->flags & SEC_DEBUGGING) != 0 && h->def_dynamic)) + { + (*_bfd_error_handler) + (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"), + input_bfd, + input_section, (long) rel->r_offset, h->root.root.string); + return FALSE; + } + + r = _bfd_final_link_relocate (howto, input_bfd, input_section, + contents, rel->r_offset, + relocation, rel->r_addend); + + if (r != bfd_reloc_ok) + { + const char *name; + + if (h != NULL) + name = h->root.root.string; + else + { + name = bfd_elf_string_from_elf_section (input_bfd, + symtab_hdr->sh_link, + sym->st_name); + if (name == NULL) + return FALSE; + if (*name == '\0') + name = bfd_section_name (input_bfd, sec); + } + + if (r == bfd_reloc_overflow) + { + if (!(info->callbacks->reloc_overflow + (info, (h ? &h->root : NULL), name, howto->name, + (bfd_vma) 0, input_bfd, input_section, rel->r_offset))) + return FALSE; + } + else + { + (*_bfd_error_handler) + (_("%B(%A+0x%lx): reloc against `%s': error %d"), + input_bfd, input_section, + (long) rel->r_offset, name, (int) r); + return FALSE; + } + } + } + + return TRUE; +} + +static asection * +bfin_gc_mark_hook (asection * sec, + struct bfd_link_info *info ATTRIBUTE_UNUSED, + Elf_Internal_Rela * rel, + struct elf_link_hash_entry *h, + Elf_Internal_Sym * sym) +{ + if (h != NULL) + { + switch (ELF32_R_TYPE (rel->r_info)) + { + + case R_BFIN_GNU_VTINHERIT: + case R_BFIN_GNU_VTENTRY: + break; + + default: + switch (h->root.type) + { + default: + break; + + case bfd_link_hash_defined: + case bfd_link_hash_defweak: + return h->root.u.def.section; + + case bfd_link_hash_common: + return h->root.u.c.p->section; + } + } + } + else + return bfd_section_from_elf_index (sec->owner, sym->st_shndx); + + return NULL; +} + + +/* Update the got entry reference counts for the section being removed. */ + +static bfd_boolean +bfin_gc_sweep_hook (bfd * abfd, + struct bfd_link_info *info, + asection * sec, + const Elf_Internal_Rela * relocs) +{ + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_signed_vma *local_got_refcounts; + const Elf_Internal_Rela *rel, *relend; + bfd *dynobj; + asection *sgot; + asection *srelgot; + + dynobj = elf_hash_table (info)->dynobj; + if (dynobj == NULL) + return TRUE; + + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + local_got_refcounts = elf_local_got_refcounts (abfd); + + sgot = bfd_get_section_by_name (dynobj, ".got"); + srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); + + relend = relocs + sec->reloc_count; + for (rel = relocs; rel < relend; rel++) + { + unsigned long r_symndx; + struct elf_link_hash_entry *h; + + switch (ELF32_R_TYPE (rel->r_info)) + { + case R_got: + r_symndx = ELF32_R_SYM (rel->r_info); + if (r_symndx >= symtab_hdr->sh_info) + { + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + if (h->got.refcount > 0) + { + --h->got.refcount; + if (h->got.refcount == 0) + { + /* We don't need the .got entry any more. */ + sgot->size -= 4; + srelgot->size -= sizeof (Elf32_External_Rela); + } + } + } + else if (local_got_refcounts != NULL) + { + if (local_got_refcounts[r_symndx] > 0) + { + --local_got_refcounts[r_symndx]; + if (local_got_refcounts[r_symndx] == 0) + { + /* We don't need the .got entry any more. */ + sgot->size -= 4; + if (info->shared) + srelgot->size -= sizeof (Elf32_External_Rela); + } + } + } + break; + default: + break; + } + } + + return TRUE; +} + + +/* Merge backend specific data from an object file to the output + object file when linking. */ +static bfd_boolean +elf32_bfin_merge_private_bfd_data (bfd * ibfd, bfd * obfd) +{ + flagword out_flags; + flagword in_flags; + + if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour + || bfd_get_flavour (obfd) != bfd_target_elf_flavour) + return TRUE; + + in_flags = elf_elfheader (ibfd)->e_flags; + out_flags = elf_elfheader (obfd)->e_flags; + + if (!elf_flags_init (obfd)) + { + elf_flags_init (obfd) = TRUE; + elf_elfheader (obfd)->e_flags = in_flags; + } + + return TRUE; +} + + +static bfd_boolean +elf32_bfin_set_private_flags (bfd * abfd, flagword flags) +{ + elf_elfheader (abfd)->e_flags = flags; + elf_flags_init (abfd) = TRUE; + return TRUE; +} + + +/* Display the flags field. */ +static bfd_boolean +elf32_bfin_print_private_bfd_data (bfd * abfd, PTR ptr) +{ + FILE *file = (FILE *) ptr; + + BFD_ASSERT (abfd != NULL && ptr != NULL); + + /* Print normal ELF private data. */ + _bfd_elf_print_private_bfd_data (abfd, ptr); + + /* Ignore init flag - it may not be set, despite the flags field + containing valid data. */ + + /* xgettext:c-format */ + fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); + + fputc ('\n', file); + + return TRUE; +} + +/* bfin ELF linker hash entry. */ + +struct bfin_link_hash_entry +{ + struct elf_link_hash_entry root; + + /* Number of PC relative relocs copied for this symbol. */ + struct bfin_pcrel_relocs_copied *pcrel_relocs_copied; +}; + +/* bfin ELF linker hash table. */ + +struct bfin_link_hash_table +{ + struct elf_link_hash_table root; + + /* Small local sym to section mapping cache. */ + struct sym_sec_cache sym_sec; +}; + +#define bfin_hash_entry(ent) ((struct bfin_link_hash_entry *) (ent)) + +static struct bfd_hash_entry * +bfin_link_hash_newfunc (struct bfd_hash_entry *entry, + struct bfd_hash_table *table, const char *string) +{ + struct bfd_hash_entry *ret = entry; + + /* Allocate the structure if it has not already been allocated by a + subclass. */ + if (ret == NULL) + ret = bfd_hash_allocate (table, sizeof (struct bfin_link_hash_entry)); + if (ret == NULL) + return ret; + + /* Call the allocation method of the superclass. */ + ret = _bfd_elf_link_hash_newfunc (ret, table, string); + if (ret != NULL) + bfin_hash_entry (ret)->pcrel_relocs_copied = NULL; + + return ret; +} + +/* Create an bfin ELF linker hash table. */ + +static struct bfd_link_hash_table * +bfin_link_hash_table_create (bfd * abfd) +{ + struct bfin_link_hash_table *ret; + bfd_size_type amt = sizeof (struct bfin_link_hash_table); + + ret = (struct bfin_link_hash_table *) bfd_malloc (amt); + if (ret == (struct bfin_link_hash_table *) NULL) + return NULL; + + if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, + bfin_link_hash_newfunc)) + { + free (ret); + return NULL; + } + + ret->sym_sec.abfd = NULL; + + return &ret->root.root; +} + +/* The size in bytes of an entry in the procedure linkage table. */ + +/* Finish up the dynamic sections. */ + +static bfd_boolean +bfin_finish_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, + struct bfd_link_info *info) +{ + bfd *dynobj; + asection *sdyn; + + dynobj = elf_hash_table (info)->dynobj; + + sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); + + if (elf_hash_table (info)->dynamic_sections_created) + { + Elf32_External_Dyn *dyncon, *dynconend; + + BFD_ASSERT (sdyn != NULL); + + dyncon = (Elf32_External_Dyn *) sdyn->contents; + dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); + for (; dyncon < dynconend; dyncon++) + { + Elf_Internal_Dyn dyn; + + bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); + + } + + } + return TRUE; +} + +/* Finish up dynamic symbol handling. We set the contents of various + dynamic sections here. */ + +static bfd_boolean +bfin_finish_dynamic_symbol (bfd * output_bfd, + struct bfd_link_info *info, + struct elf_link_hash_entry *h, + Elf_Internal_Sym * sym) +{ + bfd *dynobj; + + dynobj = elf_hash_table (info)->dynobj; + + if (h->got.offset != (bfd_vma) - 1) + { + asection *sgot; + asection *srela; + Elf_Internal_Rela rela; + bfd_byte *loc; + + /* This symbol has an entry in the global offset table. + Set it up. */ + + sgot = bfd_get_section_by_name (dynobj, ".got"); + srela = bfd_get_section_by_name (dynobj, ".rela.got"); + BFD_ASSERT (sgot != NULL && srela != NULL); + + rela.r_offset = (sgot->output_section->vma + + sgot->output_offset + + (h->got.offset & ~(bfd_vma) 1)); + + /* If this is a -Bsymbolic link, and the symbol is defined + locally, we just want to emit a RELATIVE reloc. Likewise if + the symbol was forced to be local because of a version file. + The entry in the global offset table will already have been + initialized in the relocate_section function. */ + if (info->shared + && (info->symbolic + || h->dynindx == -1 || h->forced_local) && h->def_regular) + { +fprintf(stderr, "*** check this relocation %s\n", __FUNCTION__); + rela.r_info = ELF32_R_INFO (0, R_pcrel24); + rela.r_addend = bfd_get_signed_32 (output_bfd, + (sgot->contents + + + (h->got. + offset & ~(bfd_vma) 1))); + } + else + { + bfd_put_32 (output_bfd, (bfd_vma) 0, + sgot->contents + (h->got.offset & ~(bfd_vma) 1)); + rela.r_info = ELF32_R_INFO (h->dynindx, R_got); + rela.r_addend = 0; + } + + loc = srela->contents; + loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); + bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); + } + + if (h->needs_copy) + { + BFD_ASSERT (0); + } + /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ + if (strcmp (h->root.root.string, "_DYNAMIC") == 0 + || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) + sym->st_shndx = SHN_ABS; + + return TRUE; +} + +/* Adjust a symbol defined by a dynamic object and referenced by a + regular object. The current definition is in some section of the + dynamic object, but we're not including those sections. We have to + change the definition to something the rest of the link can + understand. */ + +static bfd_boolean +bfin_adjust_dynamic_symbol (struct bfd_link_info *info, + struct elf_link_hash_entry *h) +{ + bfd *dynobj; + asection *s; + unsigned int power_of_two; + + dynobj = elf_hash_table (info)->dynobj; + + /* Make sure we know what is going on here. */ + BFD_ASSERT (dynobj != NULL + && (h->needs_plt + || h->u.weakdef != NULL + || (h->def_dynamic && h->ref_regular && !h->def_regular))); + + /* If this is a function, put it in the procedure linkage table. We + will fill in the contents of the procedure linkage table later, + when we know the address of the .got section. */ + if (h->type == STT_FUNC || h->needs_plt) + { + BFD_ASSERT(0); + } + + /* If this is a weak symbol, and there is a real definition, the + processor independent code will have arranged for us to see the + real definition first, and we can just use the same value. */ + if (h->u.weakdef != NULL) + { + BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined + || h->u.weakdef->root.type == bfd_link_hash_defweak); + h->root.u.def.section = h->u.weakdef->root.u.def.section; + h->root.u.def.value = h->u.weakdef->root.u.def.value; + return TRUE; + } + + /* This is a reference to a symbol defined by a dynamic object which + is not a function. */ + + /* If we are creating a shared library, we must presume that the + only references to the symbol are via the global offset table. + For such cases we need not do anything here; the relocations will + be handled correctly by relocate_section. */ + if (info->shared) + return TRUE; + + /* We must allocate the symbol in our .dynbss section, which will + become part of the .bss section of the executable. There will be + an entry for this symbol in the .dynsym section. The dynamic + object will contain position independent code, so all references + from the dynamic object to this symbol will go through the global + offset table. The dynamic linker will use the .dynsym entry to + determine the address it must put in the global offset table, so + both the dynamic object and the regular object will refer to the + same memory location for the variable. */ + + s = bfd_get_section_by_name (dynobj, ".dynbss"); + BFD_ASSERT (s != NULL); + + /* We must generate a R_68K_COPY reloc to tell the dynamic linker to + copy the initial value out of the dynamic object and into the + runtime process image. We need to remember the offset into the + .rela.bss section we are going to use. */ + if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) + { + asection *srel; + + srel = bfd_get_section_by_name (dynobj, ".rela.bss"); + BFD_ASSERT (srel != NULL); + srel->size += sizeof (Elf32_External_Rela); + h->needs_copy = 1; + } + + /* We need to figure out the alignment required for this symbol. I + have no idea how ELF linkers handle this. */ + power_of_two = bfd_log2 (h->size); + if (power_of_two > 3) + power_of_two = 3; + + /* Apply the required alignment. */ + s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); + if (power_of_two > bfd_get_section_alignment (dynobj, s)) + { + if (!bfd_set_section_alignment (dynobj, s, power_of_two)) + return FALSE; + } + + /* Define the symbol as being at this point in the section. */ + h->root.u.def.section = s; + h->root.u.def.value = s->size; + + /* Increment the section size to make room for the symbol. */ + s->size += h->size; + + return TRUE; +} + +/* The bfin linker needs to keep track of the number of relocs that it + decides to copy in check_relocs for each symbol. This is so that it + can discard PC relative relocs if it doesn't need them when linking + with -Bsymbolic. We store the information in a field extending the + regular ELF linker hash table. */ + +/* This structure keeps track of the number of PC relative relocs we have + copied for a given symbol. */ + +struct bfin_pcrel_relocs_copied +{ + /* Next section. */ + struct bfin_pcrel_relocs_copied *next; + /* A section in dynobj. */ + asection *section; + /* Number of relocs copied in this section. */ + bfd_size_type count; +}; + +/* This function is called via elf_link_hash_traverse if we are + creating a shared object. In the -Bsymbolic case it discards the + space allocated to copy PC relative relocs against symbols which + are defined in regular objects. For the normal shared case, it + discards space for pc-relative relocs that have become local due to + symbol visibility changes. We allocated space for them in the + check_relocs routine, but we won't fill them in in the + relocate_section routine. + + We also check whether any of the remaining relocations apply + against a readonly section, and set the DF_TEXTREL flag in this + case. */ + +static bfd_boolean +bfin_discard_copies (struct elf_link_hash_entry *h, PTR inf) +{ + struct bfd_link_info *info = (struct bfd_link_info *) inf; + struct bfin_pcrel_relocs_copied *s; + + if (h->root.type == bfd_link_hash_warning) + h = (struct elf_link_hash_entry *) h->root.u.i.link; + + if (!h->def_regular || (!info->symbolic && !h->forced_local)) + { + if ((info->flags & DF_TEXTREL) == 0) + { + /* Look for relocations against read-only sections. */ + for (s = bfin_hash_entry (h)->pcrel_relocs_copied; + s != NULL; s = s->next) + if ((s->section->flags & SEC_READONLY) != 0) + { + info->flags |= DF_TEXTREL; + break; + } + } + + return TRUE; + } + + for (s = bfin_hash_entry (h)->pcrel_relocs_copied; + s != NULL; s = s->next) + s->section->size -= s->count * sizeof (Elf32_External_Rela); + + return TRUE; +} + +/* Set the sizes of the dynamic sections. */ +#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" + +static bfd_boolean +bfin_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED, + struct bfd_link_info *info) +{ + bfd *dynobj; + asection *s; + bfd_boolean relocs; + + dynobj = elf_hash_table (info)->dynobj; + BFD_ASSERT (dynobj != NULL); + + if (elf_hash_table (info)->dynamic_sections_created) + { + /* Set the contents of the .interp section to the interpreter. */ + if (info->executable) + { + s = bfd_get_section_by_name (dynobj, ".interp"); + BFD_ASSERT (s != NULL); + s->size = sizeof ELF_DYNAMIC_INTERPRETER; + s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; + } + } + else + { + /* We may have created entries in the .rela.got section. + However, if we are not creating the dynamic sections, we will + not actually use these entries. Reset the size of .rela.got, + which will cause it to get stripped from the output file + below. */ + s = bfd_get_section_by_name (dynobj, ".rela.got"); + if (s != NULL) + s->size = 0; + } + + /* If this is a -Bsymbolic shared link, then we need to discard all + PC relative relocs against symbols defined in a regular object. + For the normal shared case we discard the PC relative relocs + against symbols that have become local due to visibility changes. + We allocated space for them in the check_relocs routine, but we + will not fill them in in the relocate_section routine. */ + if (info->shared) + elf_link_hash_traverse (elf_hash_table (info), + bfin_discard_copies, (PTR) info); + + /* The check_relocs and adjust_dynamic_symbol entry points have + determined the sizes of the various dynamic sections. Allocate + memory for them. */ + relocs = FALSE; + for (s = dynobj->sections; s != NULL; s = s->next) + { + const char *name; + bfd_boolean strip; + + if ((s->flags & SEC_LINKER_CREATED) == 0) + continue; + + /* It's OK to base decisions on the section name, because none + of the dynobj section names depend upon the input files. */ + name = bfd_get_section_name (dynobj, s); + + strip = FALSE; + + if (strncmp (name, ".rela", 5) == 0) + { + if (s->size == 0) + { + /* If we don't need this section, strip it from the + output file. This is mostly to handle .rela.bss and + .rela.plt. We must create both sections in + create_dynamic_sections, because they must be created + before the linker maps input sections to output + sections. The linker does that before + adjust_dynamic_symbol is called, and it is that + function which decides whether anything needs to go + into these sections. */ + strip = TRUE; + } + else + { + relocs = TRUE; + + /* We use the reloc_count field as a counter if we need + to copy relocs into the output file. */ + s->reloc_count = 0; + } + } + else if (strncmp (name, ".got", 4) != 0) + { + /* It's not one of our sections, so don't allocate space. */ + continue; + } + + if (strip) + { + s->flags |= SEC_EXCLUDE; + continue; + } + + /* Allocate memory for the section contents. */ + /* FIXME: This should be a call to bfd_alloc not bfd_zalloc. + Unused entries should be reclaimed before the section's contents + are written out, but at the moment this does not happen. Thus in + order to prevent writing out garbage, we initialise the section's + contents to zero. */ + s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); + if (s->contents == NULL && s->size != 0) + return FALSE; + } + + if (elf_hash_table (info)->dynamic_sections_created) + { + /* Add some entries to the .dynamic section. We fill in the + values later, in bfin_finish_dynamic_sections, but we + must add the entries now so that we get the correct size for + the .dynamic section. The DT_DEBUG entry is filled in by the + dynamic linker and used by the debugger. */ +#define add_dynamic_entry(TAG, VAL) \ + _bfd_elf_add_dynamic_entry (info, TAG, VAL) + + if (!info->shared) + { + if (!add_dynamic_entry (DT_DEBUG, 0)) + return FALSE; + } + + + if (relocs) + { + if (!add_dynamic_entry (DT_RELA, 0) + || !add_dynamic_entry (DT_RELASZ, 0) + || !add_dynamic_entry (DT_RELAENT, + sizeof (Elf32_External_Rela))) + return FALSE; + } + + if ((info->flags & DF_TEXTREL) != 0) + { + if (!add_dynamic_entry (DT_TEXTREL, 0)) + return FALSE; + } + } +#undef add_dynamic_entry + + return TRUE; +} + +/* Given a .data section and a .emreloc in-memory section, store + relocation information into the .emreloc section which can be + used at runtime to relocate the section. This is called by the + linker when the --embedded-relocs switch is used. This is called + after the add_symbols entry point has been called for all the + objects, and before the final_link entry point is called. */ + +bfd_boolean +bfd_bfin_elf32_create_embedded_relocs ( + bfd *abfd, + struct bfd_link_info *info, + asection *datasec, + asection *relsec, + char **errmsg) +{ + Elf_Internal_Shdr *symtab_hdr; + Elf_Internal_Sym *isymbuf = NULL; + Elf_Internal_Rela *internal_relocs = NULL; + Elf_Internal_Rela *irel, *irelend; + bfd_byte *p; + bfd_size_type amt; + + BFD_ASSERT (! info->relocatable); + + *errmsg = NULL; + + if (datasec->reloc_count == 0) + return TRUE; + + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + + /* Get a copy of the native relocations. */ + internal_relocs = (_bfd_elf_link_read_relocs + (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, + info->keep_memory)); + if (internal_relocs == NULL) + goto error_return; + + amt = (bfd_size_type) datasec->reloc_count * 12; + relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt); + if (relsec->contents == NULL) + goto error_return; + + p = relsec->contents; + + irelend = internal_relocs + datasec->reloc_count; + for (irel = internal_relocs; irel < irelend; irel++, p += 12) + { + asection *targetsec; + + /* We are going to write a four byte longword into the runtime + reloc section. The longword will be the address in the data + section which must be relocated. It is followed by the name + of the target section NUL-padded or truncated to 8 + characters. */ + + /* We can only relocate absolute longword relocs at run time. */ + if (ELF32_R_TYPE (irel->r_info) != (int) R_byte4_data) + { + *errmsg = _("unsupported reloc type"); + bfd_set_error (bfd_error_bad_value); + goto error_return; + } + + /* Get the target section referred to by the reloc. */ + if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) + { + /* A local symbol. */ + Elf_Internal_Sym *isym; + + /* Read this BFD's local symbols if we haven't done so already. */ + if (isymbuf == NULL) + { + isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; + if (isymbuf == NULL) + isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, + symtab_hdr->sh_info, 0, + NULL, NULL, NULL); + if (isymbuf == NULL) + goto error_return; + } + + isym = isymbuf + ELF32_R_SYM (irel->r_info); + targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx); + } + else + { + unsigned long indx; + struct elf_link_hash_entry *h; + + /* An external symbol. */ + indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; + h = elf_sym_hashes (abfd)[indx]; + BFD_ASSERT (h != NULL); + if (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + targetsec = h->root.u.def.section; + else + targetsec = NULL; + } + + bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p); + memset (p + 4, 0, 8); + if (targetsec != NULL) + strncpy (p + 4, targetsec->output_section->name, 8); + } + + if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) + free (isymbuf); + if (internal_relocs != NULL + && elf_section_data (datasec)->relocs != internal_relocs) + free (internal_relocs); + return TRUE; + +error_return: + if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) + free (isymbuf); + if (internal_relocs != NULL + && elf_section_data (datasec)->relocs != internal_relocs) + free (internal_relocs); + return FALSE; +} + +#define TARGET_LITTLE_SYM bfd_elf32_bfin_vec +#define TARGET_LITTLE_NAME "elf32-bfin" +#define ELF_ARCH bfd_arch_bfin +#define ELF_MACHINE_CODE EM_BLACKFIN +#define ELF_MAXPAGESIZE 0x1000 +#define elf_symbol_leading_char '_' + +#define bfd_elf32_bfd_reloc_type_lookup bfin_bfd_reloc_type_lookup +#define elf_info_to_howto bfin_info_to_howto +#define elf_info_to_howto_rel 0 + +#define bfd_elf32_bfd_is_local_label_name \ + bfin_is_local_label_name +#define bfin_hash_table(p) \ + ((struct bfin_link_hash_table *) (p)->hash) + + + +#define elf_backend_create_dynamic_sections \ + _bfd_elf_create_dynamic_sections +#define bfd_elf32_bfd_link_hash_table_create \ + bfin_link_hash_table_create +#define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link + +#define elf_backend_check_relocs bfin_check_relocs +#define elf_backend_adjust_dynamic_symbol \ + bfin_adjust_dynamic_symbol +#define elf_backend_size_dynamic_sections \ + bfin_size_dynamic_sections +#define elf_backend_relocate_section bfin_relocate_section +#define elf_backend_finish_dynamic_symbol \ + bfin_finish_dynamic_symbol +#define elf_backend_finish_dynamic_sections \ + bfin_finish_dynamic_sections +#define elf_backend_gc_mark_hook bfin_gc_mark_hook +#define elf_backend_gc_sweep_hook bfin_gc_sweep_hook +#define bfd_elf32_bfd_merge_private_bfd_data \ + elf32_bfin_merge_private_bfd_data +#define bfd_elf32_bfd_set_private_flags \ + elf32_bfin_set_private_flags +#define bfd_elf32_bfd_print_private_bfd_data \ + elf32_bfin_print_private_bfd_data +#define elf_backend_reloc_type_class elf32_bfin_reloc_type_class +#define elf_backend_can_gc_sections 1 +#define elf_backend_can_refcount 1 +#define elf_backend_want_got_plt 0 +#define elf_backend_plt_readonly 1 +#define elf_backend_want_plt_sym 0 +#define elf_backend_got_header_size 12 +#define elf_backend_rela_normal 1 + + +#include "elf32-target.h" |