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-rw-r--r--bfd/elf32-cr16c.c963
1 files changed, 0 insertions, 963 deletions
diff --git a/bfd/elf32-cr16c.c b/bfd/elf32-cr16c.c
deleted file mode 100644
index 35bacbb..0000000
--- a/bfd/elf32-cr16c.c
+++ /dev/null
@@ -1,963 +0,0 @@
-/* BFD back-end for National Semiconductor's CR16C ELF
- Copyright (C) 2004-2019 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 3 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 "sysdep.h"
-#include "bfd.h"
-#include "libbfd.h"
-#include "bfdlink.h"
-#include "elf/cr16c.h"
-#include "elf-bfd.h"
-
-
-#define USE_REL 1 /* CR16C uses REL relocations instead of RELA. */
-
-/* The following definition is based on EMPTY_HOWTO macro,
- but also initiates the "name" field in HOWTO struct. */
-#define ONLY_NAME_HOWTO(C) \
- HOWTO ((C), 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL, \
- STRINGX(C), FALSE, 0, 0, FALSE)
-
-/* reloc_map_index array maps CRASM relocation type into a BFD
- relocation enum. The array's indices are synchronized with
- RINDEX_16C_* indices, created in include/elf/cr16c.h.
- The array is used in:
- 1. elf32-cr16c.c : elf_cr16c_reloc_type_lookup().
- 2. asreloc.c : find_reloc_type(). */
-
-RELOC_MAP reloc_map_index[RINDEX_16C_MAX] =
-{
- {R_16C_NUM08, BFD_RELOC_16C_NUM08},
- {R_16C_NUM08_C, BFD_RELOC_16C_NUM08_C},
- {R_16C_NUM16, BFD_RELOC_16C_NUM16},
- {R_16C_NUM16_C, BFD_RELOC_16C_NUM16_C},
- {R_16C_NUM32, BFD_RELOC_16C_NUM32},
- {R_16C_NUM32_C, BFD_RELOC_16C_NUM32_C},
- {R_16C_DISP04, BFD_RELOC_16C_DISP04},
- {R_16C_DISP04_C, BFD_RELOC_16C_DISP04_C},
- {R_16C_DISP08, BFD_RELOC_16C_DISP08},
- {R_16C_DISP08_C, BFD_RELOC_16C_DISP08_C},
- {R_16C_DISP16, BFD_RELOC_16C_DISP16},
- {R_16C_DISP16_C, BFD_RELOC_16C_DISP16_C},
- {R_16C_DISP24, BFD_RELOC_16C_DISP24},
- {R_16C_DISP24_C, BFD_RELOC_16C_DISP24_C},
- {R_16C_DISP24a, BFD_RELOC_16C_DISP24a},
- {R_16C_DISP24a_C, BFD_RELOC_16C_DISP24a_C},
- {R_16C_REG04, BFD_RELOC_16C_REG04},
- {R_16C_REG04_C, BFD_RELOC_16C_REG04_C},
- {R_16C_REG04a, BFD_RELOC_16C_REG04a},
- {R_16C_REG04a_C, BFD_RELOC_16C_REG04a_C},
- {R_16C_REG14, BFD_RELOC_16C_REG14},
- {R_16C_REG14_C, BFD_RELOC_16C_REG14_C},
- {R_16C_REG16, BFD_RELOC_16C_REG16},
- {R_16C_REG16_C, BFD_RELOC_16C_REG16_C},
- {R_16C_REG20, BFD_RELOC_16C_REG20},
- {R_16C_REG20_C, BFD_RELOC_16C_REG20_C},
- {R_16C_ABS20, BFD_RELOC_16C_ABS20},
- {R_16C_ABS20_C, BFD_RELOC_16C_ABS20_C},
- {R_16C_ABS24, BFD_RELOC_16C_ABS24},
- {R_16C_ABS24_C, BFD_RELOC_16C_ABS24_C},
- {R_16C_IMM04, BFD_RELOC_16C_IMM04},
- {R_16C_IMM04_C, BFD_RELOC_16C_IMM04_C},
- {R_16C_IMM16, BFD_RELOC_16C_IMM16},
- {R_16C_IMM16_C, BFD_RELOC_16C_IMM16_C},
- {R_16C_IMM20, BFD_RELOC_16C_IMM20},
- {R_16C_IMM20_C, BFD_RELOC_16C_IMM20_C},
- {R_16C_IMM24, BFD_RELOC_16C_IMM24},
- {R_16C_IMM24_C, BFD_RELOC_16C_IMM24_C},
- {R_16C_IMM32, BFD_RELOC_16C_IMM32},
- {R_16C_IMM32_C, BFD_RELOC_16C_IMM32_C}
-};
-
-static reloc_howto_type elf_howto_table[] =
-{
- /* 00 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM08),
- /* 01 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM08_C),
- /* 02 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM16),
- /* 03 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM16_C),
- /* 04 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM32),
- /* 05 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM32_C),
- /* 06 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP04),
- /* 07 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP04_C),
- /* 08 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP08),
- /* 09 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP08_C),
- /* 10 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP16),
- /* 11 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP16_C),
- /* 12 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP24),
- /* 13 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP24_C),
- /* 14 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP24a),
- /* 15 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP24a_C),
- /* 16 */ ONLY_NAME_HOWTO (RINDEX_16C_REG04),
- /* 17 */ ONLY_NAME_HOWTO (RINDEX_16C_REG04_C),
- /* 18 */ ONLY_NAME_HOWTO (RINDEX_16C_REG04a),
- /* 19 */ ONLY_NAME_HOWTO (RINDEX_16C_REG04a_C),
- /* 20 */ ONLY_NAME_HOWTO (RINDEX_16C_REG14),
- /* 21 */ ONLY_NAME_HOWTO (RINDEX_16C_REG14_C),
- /* 22 */ ONLY_NAME_HOWTO (RINDEX_16C_REG16),
- /* 23 */ ONLY_NAME_HOWTO (RINDEX_16C_REG16_C),
- /* 24 */ ONLY_NAME_HOWTO (RINDEX_16C_REG20),
- /* 25 */ ONLY_NAME_HOWTO (RINDEX_16C_REG20_C),
- /* 26 */ ONLY_NAME_HOWTO (RINDEX_16C_ABS20),
- /* 27 */ ONLY_NAME_HOWTO (RINDEX_16C_ABS20_C),
- /* 28 */ ONLY_NAME_HOWTO (RINDEX_16C_ABS24),
- /* 29 */ ONLY_NAME_HOWTO (RINDEX_16C_ABS24_C),
- /* 30 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM04),
- /* 31 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM04_C),
- /* 32 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM16),
- /* 33 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM16_C),
- /* 34 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM20),
- /* 35 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM20_C),
- /* 36 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM24),
- /* 37 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM24_C),
- /* 38 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM32),
- /* 39 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM32_C)
-};
-
-
-/* Code to turn a code_type into a howto ptr, uses the above howto table. */
-
-static reloc_howto_type *
-elf_cr16c_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- bfd_reloc_code_real_type code)
-{
- unsigned int i;
-
- for (i = 0; i < RINDEX_16C_MAX; i++)
- {
- if (code == reloc_map_index[i].bfd_reloc_enum)
- {
- /* printf ("CR16C Relocation Type is - %x\n", code); */
- return & elf_howto_table[i];
- }
- }
-
- /* printf ("This relocation Type is not supported - %x\n", code); */
- return 0;
-}
-
-static reloc_howto_type *
-elf_cr16c_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- const char *r_name)
-{
- unsigned int i;
-
- for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
- if (elf_howto_table[i].name != NULL
- && strcasecmp (elf_howto_table[i].name, r_name) == 0)
- return &elf_howto_table[i];
-
- return NULL;
-}
-
-static bfd_boolean
-elf_cr16c_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
- arelent *cache_ptr ATTRIBUTE_UNUSED,
- Elf_Internal_Rela *dst ATTRIBUTE_UNUSED)
-{
- return FALSE;
-}
-
-static bfd_boolean
-elf_cr16c_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
- arelent *cache_ptr,
- Elf_Internal_Rela *dst)
-{
- unsigned int r_type = ELF32_R_TYPE (dst->r_info);
-
- if (r_type >= RINDEX_16C_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 = &elf_howto_table[r_type];
- return TRUE;
-}
-
-/* Perform a relocation as part of a final link. */
-
-static bfd_reloc_status_type
-cr16c_elf_final_link_relocate (reloc_howto_type *howto,
- bfd *abfd,
- bfd *output_bfd ATTRIBUTE_UNUSED,
- asection *input_section,
- bfd_byte *data,
- bfd_vma octets,
- bfd_vma Rvalue,
- bfd_vma addend ATTRIBUTE_UNUSED,
- struct bfd_link_info *info ATTRIBUTE_UNUSED,
- asection *sym_sec ATTRIBUTE_UNUSED,
- int is_local ATTRIBUTE_UNUSED)
-{
- long value;
- short sword; /* Extracted from the hole and put back. */
- unsigned long format, addr_type, code_factor;
- unsigned short size;
- unsigned short r_type;
-
- unsigned long disp20_opcod;
- char neg = 0;
- char neg2pos = 0;
-
- long left_val = 0;
- long plus_factor = 0; /* To be added to the hole. */
-
-#define MIN_BYTE ((int) 0xFFFFFF80)
-#define MIN_WORD ((int) 0xFFFF8000)
-#define MAX_UWORD ((unsigned) 0x0000FFFF)
-#define MAX_UBYTE ((unsigned) 0x000000FF)
-
- r_type = reloc_map_index[howto->type].cr_reloc_type;
- format = r_type & R_FORMAT;
- size = r_type & R_SIZESP;
- addr_type = r_type & R_ADDRTYPE;
- code_factor = ((addr_type == R_CODE_ADDR) ? 1 : 0);
-
- switch (format)
- {
- case R_NUMBER:
- switch (size)
- {
- case R_S_16C_08: /* One byte. */
- value = bfd_get_8 (abfd, (char *) data + octets);
- break;
- case R_S_16C_16: /* Two bytes. */
- sword = bfd_get_16 (abfd, (bfd_byte *) data + octets);
- value = sword;
- break;
- case R_S_16C_32: /* Four bytes. */
- value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
- break;
- default:
- return bfd_reloc_notsupported;
- }
- break;
-
- case R_16C_DISPL:
- switch (size)
- {
- case R_S_16C_04: /* word1(4-7). */
- value = bfd_get_8 (abfd, (char *) data + octets);
- left_val = value & 0xF;
- value = (value & 0xF0) >> 4;
- value++;
- value <<= 1;
- break;
- case R_S_16C_08: /* word1(0-3,8-11). */
- sword = bfd_get_16 (abfd, (char *) data + octets);
- value = sword & 0x000F;
- value |= ((sword & 0x0F00) >> 4);
- left_val = sword & 0xF0F0;
- value <<= 1;
- if (value & 0x100)
- value |= 0xFFFFFF00;
- break;
- case R_S_16C_16: /* word2. */
- sword = bfd_get_16 (abfd, (bfd_byte *) data + octets);
- value = sword;
- value = ((value & 0xFFFE) >> 1) | ((value & 0x1) << 15);
- value <<= 1;
- if (value & 0x10000)
- value |= 0xFFFF0000;
- break;
- case R_S_16C_24_a: /* word1(0-7),word2. */
- value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
- left_val = value & 0x0000FF00;
- value = ((value & 0xFFFE0000) >> 17) |
- ((value & 0x00010000) << 7) | ((value & 0x000000FF) << 15);
- value <<= 1;
- if (value & 0x1000000)
- value |= 0xFE000000;
- break;
- case R_S_16C_24: /* word2(0-3,8-11),word3. */
- value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
- left_val = value & 0x0000F0F0;
- value = ((value >> 16) & 0x0000FFFF) |
- ((value & 0x00000F00) << 8) | ((value & 0x0000000F) << 20);
-
- value = ((value & 0x00FFFFFE) >> 1) | ((value & 0x00000001) << 23);
-
- value <<= 1;
- if (value & 0x1000000)
- value |= 0xFE000000;
- break;
- default:
- return bfd_reloc_notsupported;
- }
- break;
-
- case R_16C_REGREL:
- switch (size)
- {
- case R_S_16C_04: /* word1(12-15) not scaled. */
- value = bfd_get_8 (abfd, (char *) data + octets);
- left_val = value & 0xF0;
- value = value & 0xF;
- break;
- case R_S_16C_04_a: /* word1(12-15) scaled by 2. */
- value = bfd_get_8 (abfd, (char *) data + octets);
- left_val = value & 0xF0;
- value = value & 0xF;
- value <<= 1;
- break;
- case R_S_16C_14: /* word1(4-5),word2(0-3,8-15). */
- value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
- left_val = value & 0x00F0FFCF;
- value = ((value & 0xc0000000) >> 24) |
- ((value & 0x3F000000) >> 16) |
- ((value & 0x000F0000) >> 16) | (value & 0x00000030);
- break;
- case R_S_16C_16: /* word2. */
- sword = bfd_get_16 (abfd, (bfd_byte *) data + octets);
- value = sword;
- break;
- case R_S_16C_20: /* word2(8-11),word3. */
- value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
- left_val = value & 0xF0;
- value = (value & 0xF) << 16;
- sword = bfd_get_16 (abfd, (bfd_byte *) data + octets + 1);
- value = value | (unsigned short) sword;
- disp20_opcod = bfd_get_32 (abfd, (bfd_byte *) data + octets - 3);
- disp20_opcod |= 0x0FFF0000;
- if ((disp20_opcod == 0x4FFF0018) || /* loadb -disp20(reg) */
- (disp20_opcod == 0x5FFF0018) || /* loadb -disp20(rp) */
- (disp20_opcod == 0x8FFF0018) || /* loadd -disp20(reg) */
- (disp20_opcod == 0x9FFF0018) || /* loadd -disp20(rp) */
- (disp20_opcod == 0xCFFF0018) || /* loadw -disp20(reg) */
- (disp20_opcod == 0xDFFF0018) || /* loadw -disp20(rp) */
- (disp20_opcod == 0x4FFF0019) || /* storb -disp20(reg) */
- (disp20_opcod == 0x5FFF0019) || /* storb -disp20(rp) */
- (disp20_opcod == 0x8FFF0019) || /* stord -disp20(reg) */
- (disp20_opcod == 0x9FFF0019) || /* stord -disp20(rp) */
- (disp20_opcod == 0xCFFF0019) || /* storw -disp20(reg) */
- (disp20_opcod == 0xDFFF0019))
- { /* storw -disp20(rp). */
- neg = 1;
- value |= 0xFFF00000;
- }
-
- break;
- default:
- return bfd_reloc_notsupported;
- }
- break;
-
- case R_16C_ABS:
- switch (size)
- {
- case R_S_16C_20: /* word1(0-3),word2. */
- value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
- left_val = value & 0x0000FFF0;
- value = ((value & 0xFFFF0000) >> 16) |
- ((value & 0x0000000F) << 16);
- break;
- case R_S_16C_24: /* word2(0-3,8-11),word3. */
- value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
- left_val = value & 0x0000F0F0;
- value = ((value & 0xFFFF0000) >> 16) |
- ((value & 0x00000F00) << 8) | ((value & 0x0000000F) << 20);
- break;
- default:
- return bfd_reloc_notsupported;
- }
- break;
-
- case R_16C_IMMED:
- switch (size)
- {
- case R_S_16C_04: /* word1/2(4-7). */
- value = bfd_get_8 (abfd, (char *) data + octets);
- left_val = value & 0xF;
- value = (value & 0xF0) >> 4;
- break;
- case R_S_16C_16: /* word2. */
- sword = bfd_get_16 (abfd, (bfd_byte *) data + octets);
- value = sword;
- break;
- case R_S_16C_20: /* word1(0-3),word2. */
- value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
- left_val = value & 0x0000FFF0;
- value = ((value & 0xFFFF0000) >> 16) |
- ((value & 0x0000000F) << 16);
- break;
- case R_S_16C_32: /* word2, word3. */
- value = bfd_get_32 (abfd, (bfd_byte *) data + octets);
- value = ((value & 0x0000FFFF) << 16) |
- ((value & 0xFFFF0000) >> 16);
- break;
- default:
- return bfd_reloc_notsupported;
- }
- break;
- default:
- return bfd_reloc_notsupported;
- }
-
- switch ((r_type & R_RELTO) >> 4)
- {
-
- case 0: /* R_ABS. */
- plus_factor = Rvalue;
- break;
- case 1: /* R_PCREL. */
- plus_factor = Rvalue -
- (input_section->output_section->vma + input_section->output_offset);
- break;
- default:
- return bfd_reloc_notsupported;
- }
-
- if (neg)
- {
- if (plus_factor >= -value)
- neg2pos = 1;
- /* We need to change load/stor with negative
- displ opcode to positive disp opcode (CR16C). */
- }
-
- value = value + (plus_factor >> code_factor);
-
- switch (format)
- {
- case R_NUMBER:
- switch (size)
- {
- case R_S_16C_08: /* One byte. */
- if (value > (int) MAX_UBYTE || value < MIN_BYTE)
- return bfd_reloc_overflow;
- value &= 0xFF;
- bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
- break;
-
- case R_S_16C_16: /* Two bytes. */
- if (value > (int) MAX_UWORD || value < MIN_WORD)
- return bfd_reloc_overflow;
- value &= 0xFFFF;
- sword = value;
- bfd_put_16 (abfd, (bfd_vma) sword,
- (unsigned char *) data + octets);
- break;
-
- case R_S_16C_32: /* Four bytes. */
- value &= 0xFFFFFFFF;
- bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- break;
-
- default:
- return bfd_reloc_notsupported;
- }
- break;
-
- case R_16C_DISPL:
- switch (size)
- {
- case R_S_16C_04: /* word1(4-7). */
- if ((value - 32) > 32 || value < 2)
- return bfd_reloc_overflow;
- value >>= 1;
- value--;
- value &= 0xF;
- value <<= 4;
- value |= left_val;
- bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
- break;
-
- case R_S_16C_08: /* word1(0-3,8-11). */
- if (value > 255 || value < -256 || value == 0x80)
- return bfd_reloc_overflow;
- value &= 0x1FF;
- value >>= 1;
- sword = value & 0x000F;
- sword |= (value & 0x00F0) << 4;
- sword |= left_val;
- bfd_put_16 (abfd, (bfd_vma) sword,
- (unsigned char *) data + octets);
- break;
-
- case R_S_16C_16: /* word2. */
- if (value > 65535 || value < -65536)
- return bfd_reloc_overflow;
- value >>= 1;
- value &= 0xFFFF;
- value = ((value & 0x8000) >> 15) | ((value & 0x7FFF) << 1);
- sword = value;
- bfd_put_16 (abfd, (bfd_vma) sword,
- (unsigned char *) data + octets);
- break;
-
- case R_S_16C_24_a: /* word1(0-7),word2. */
- if (value > 16777215 || value < -16777216)
- return bfd_reloc_overflow;
- value &= 0x1FFFFFF;
- value >>= 1;
- value = ((value & 0x00007FFF) << 17) |
- ((value & 0x00800000) >> 7) | ((value & 0x007F8000) >> 15);
- value |= left_val;
- bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- break;
-
- case R_S_16C_24: /* word2(0-3,8-11),word3. */
- if (value > 16777215 || value < -16777216)
- return bfd_reloc_overflow;
- value &= 0x1FFFFFF;
- value >>= 1;
-
- value = ((value & 0x007FFFFF) << 1) | ((value & 0x00800000) >> 23);
-
- value = ((value & 0x0000FFFF) << 16) |
- ((value & 0x000F0000) >> 8) | ((value & 0x00F00000) >> 20);
- value |= left_val;
- bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- break;
-
- default:
- return bfd_reloc_notsupported;
- }
- break;
-
- case R_16C_REGREL:
- switch (size)
- {
- case R_S_16C_04: /* word1(12-15) not scaled. */
- if (value > 13 || value < 0)
- return bfd_reloc_overflow;
- value &= 0xF;
- value |= left_val;
- bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
- break;
-
- case R_S_16C_04_a: /* word1(12-15) not scaled. */
- if (value > 26 || value < 0)
- return bfd_reloc_overflow;
- value &= 0x1F;
- value >>= 1;
- value |= left_val;
- bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
- break;
-
- case R_S_16C_14: /* word1(4-5),word2(0-3,8-15). */
- if (value < 0 || value > 16383)
- return bfd_reloc_overflow;
- value &= 0x3FFF;
- value = ((value & 0x000000c0) << 24) |
- ((value & 0x00003F00) << 16) |
- ((value & 0x0000000F) << 16) | (value & 0x00000030);
- value |= left_val;
- bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- break;
-
- case R_S_16C_16: /* word2. */
- if (value > 65535 || value < 0)
- return bfd_reloc_overflow;
- value &= 0xFFFF;
- sword = value;
- bfd_put_16 (abfd, (bfd_vma) sword,
- (unsigned char *) data + octets);
- break;
-
- case R_S_16C_20: /* word2(8-11),word3. */
- /* if (value > 1048575 || value < 0) RELOC_ERROR(1); */
- value &= 0xFFFFF;
- sword = value & 0x0000FFFF;
- value = (value & 0x000F0000) >> 16;
- value |= left_val;
- bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
- bfd_put_16 (abfd, (bfd_vma) sword,
- (unsigned char *) data + octets + 1);
- if (neg2pos)
- {
- /* Change load/stor negative displ opcode
- to load/stor positive displ opcode. */
- value = bfd_get_8 (abfd, (char *) data + octets - 3);
- value &= 0xF7;
- value |= 0x2;
- bfd_put_8 (abfd, (bfd_vma) value,
- (unsigned char *) data + octets - 3);
- }
- break;
-
- default:
- return bfd_reloc_notsupported;
- }
- break;
-
- case R_16C_ABS:
- switch (size)
- {
- case R_S_16C_20: /* word1(0-3),word2. */
- if (value > 1048575 || value < 0)
- return bfd_reloc_overflow;
- value &= 0xFFFFF;
- value = ((value & 0x0000FFFF) << 16) |
- ((value & 0x000F0000) >> 16);
- value |= left_val;
- bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- break;
-
- case R_S_16C_24: /* word2(0-3,8-11),word3. */
- /* if (value > 16777215 || value < 0) RELOC_ERROR(1); */
- value &= 0xFFFFFF;
- value = ((value & 0x0000FFFF) << 16) |
- ((value & 0x000F0000) >> 8) | ((value & 0x00F00000) >> 20);
- value |= left_val;
- bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- break;
-
- default:
- return bfd_reloc_notsupported;
- }
- break;
-
- case R_16C_IMMED:
- switch (size)
- {
- case R_S_16C_04: /* word1/2(4-7). */
- if (value > 15 || value < -1)
- return bfd_reloc_overflow;
- value &= 0xF;
- value <<= 4;
- value |= left_val;
- bfd_put_8 (abfd, (bfd_vma) value, (unsigned char *) data + octets);
- break;
-
- case R_S_16C_16: /* word2. */
- if (value > 32767 || value < -32768)
- return bfd_reloc_overflow;
- value &= 0xFFFF;
- sword = value;
- bfd_put_16 (abfd, (bfd_vma) sword,
- (unsigned char *) data + octets);
- break;
-
- case R_S_16C_20: /* word1(0-3),word2. */
- if (value > 1048575 || value < 0)
- return bfd_reloc_overflow;
- value &= 0xFFFFF;
- value = ((value & 0x0000FFFF) << 16) |
- ((value & 0x000F0000) >> 16);
- value |= left_val;
- bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- break;
-
- case R_S_16C_32: /* word2, word3. */
- value &= 0xFFFFFFFF;
- value = ((value & 0x0000FFFF) << 16) |
- ((value & 0xFFFF0000) >> 16);
- bfd_put_32 (abfd, (bfd_vma) value, (bfd_byte *) data + octets);
- break;
-
- default:
- return bfd_reloc_notsupported;
- }
- break;
- default:
- return bfd_reloc_notsupported;
- }
-
- return bfd_reloc_ok;
-}
-
-/* Relocate a CR16C ELF section. */
-
-static bfd_boolean
-elf32_cr16c_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)
-{
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- Elf_Internal_Rela *rel, *relend;
-
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (input_bfd);
-
- rel = relocs;
- relend = relocs + input_section->reloc_count;
- for (; rel < relend; rel++)
- {
- int r_type;
- 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;
-
- r_symndx = ELF32_R_SYM (rel->r_info);
- r_type = ELF32_R_TYPE (rel->r_info);
- howto = elf_howto_table + r_type;
-
- h = NULL;
- sym = NULL;
- sec = NULL;
- 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);
- }
- else
- {
- bfd_boolean unresolved_reloc, warned, ignored;
-
- RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
- r_symndx, symtab_hdr, sym_hashes,
- h, sec, relocation,
- unresolved_reloc, warned, ignored);
- }
-
- if (sec != NULL && discarded_section (sec))
- RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
- rel, 1, relend, howto, 0, contents);
-
- 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. */
- if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- rel->r_addend += sec->output_offset;
- continue;
- }
-
- r = cr16c_elf_final_link_relocate (howto, input_bfd, output_bfd,
- input_section,
- contents, rel->r_offset,
- relocation, rel->r_addend,
- info, sec, h == NULL);
-
- if (r != bfd_reloc_ok)
- {
- const char *name;
- const char *msg = (const char *) 0;
-
- 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 || *name == '\0')
- name = bfd_section_name (sec);
- }
-
- switch (r)
- {
- case bfd_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:
- (*info->callbacks->undefined_symbol)
- (info, name, input_bfd, input_section, rel->r_offset, TRUE);
- break;
-
- case bfd_reloc_outofrange:
- msg = _("internal error: out of range error");
- goto common_error;
-
- case bfd_reloc_notsupported:
- msg = _("internal error: unsupported relocation error");
- goto common_error;
-
- case bfd_reloc_dangerous:
- msg = _("internal error: dangerous error");
- goto common_error;
-
- default:
- msg = _("internal error: unknown error");
- /* fall through */
-
- common_error:
- (*info->callbacks->warning) (info, msg, name, input_bfd,
- input_section, rel->r_offset);
- break;
- }
- }
- }
-
- return TRUE;
-}
-
-/* CR16C ELF uses three common sections:
- One is for default common symbols (placed in usual common section).
- Second is for near common symbols (placed in "ncommon" section).
- Third is for far common symbols (placed in "fcommon" section).
- The following implementation is based on elf32-mips architecture */
-
-static asection cr16c_elf_fcom_section;
-static asymbol cr16c_elf_fcom_symbol;
-static asymbol * cr16c_elf_fcom_symbol_ptr;
-static asection cr16c_elf_ncom_section;
-static asymbol cr16c_elf_ncom_symbol;
-static asymbol * cr16c_elf_ncom_symbol_ptr;
-
-/* Given a BFD section, try to locate the
- corresponding ELF section index. */
-
-static bfd_boolean
-elf32_cr16c_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
- asection *sec,
- int *retval)
-{
- if (strcmp (bfd_section_name (sec), ".fcommon") == 0)
- *retval = SHN_CR16C_FCOMMON;
- else if (strcmp (bfd_section_name (sec), ".ncommon") == 0)
- *retval = SHN_CR16C_NCOMMON;
- else
- return FALSE;
-
- return TRUE;
-}
-
-/* Handle the special CR16C section numbers that a symbol may use. */
-
-static void
-elf32_cr16c_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
- asymbol *asym)
-{
- elf_symbol_type *elfsym = (elf_symbol_type *) asym;
- unsigned int indx;
-
- indx = elfsym->internal_elf_sym.st_shndx;
-
- switch (indx)
- {
- case SHN_CR16C_FCOMMON:
- if (cr16c_elf_fcom_section.name == NULL)
- {
- /* Initialize the far common section. */
- cr16c_elf_fcom_section.name = ".fcommon";
- cr16c_elf_fcom_section.flags = SEC_IS_COMMON | SEC_ALLOC;
- cr16c_elf_fcom_section.output_section = &cr16c_elf_fcom_section;
- cr16c_elf_fcom_section.symbol = &cr16c_elf_fcom_symbol;
- cr16c_elf_fcom_section.symbol_ptr_ptr = &cr16c_elf_fcom_symbol_ptr;
- cr16c_elf_fcom_symbol.name = ".fcommon";
- cr16c_elf_fcom_symbol.flags = BSF_SECTION_SYM;
- cr16c_elf_fcom_symbol.section = &cr16c_elf_fcom_section;
- cr16c_elf_fcom_symbol_ptr = &cr16c_elf_fcom_symbol;
- }
- asym->section = &cr16c_elf_fcom_section;
- asym->value = elfsym->internal_elf_sym.st_size;
- break;
- case SHN_CR16C_NCOMMON:
- if (cr16c_elf_ncom_section.name == NULL)
- {
- /* Initialize the far common section. */
- cr16c_elf_ncom_section.name = ".ncommon";
- cr16c_elf_ncom_section.flags = SEC_IS_COMMON | SEC_ALLOC;
- cr16c_elf_ncom_section.output_section = &cr16c_elf_ncom_section;
- cr16c_elf_ncom_section.symbol = &cr16c_elf_ncom_symbol;
- cr16c_elf_ncom_section.symbol_ptr_ptr = &cr16c_elf_ncom_symbol_ptr;
- cr16c_elf_ncom_symbol.name = ".ncommon";
- cr16c_elf_ncom_symbol.flags = BSF_SECTION_SYM;
- cr16c_elf_ncom_symbol.section = &cr16c_elf_ncom_section;
- cr16c_elf_ncom_symbol_ptr = &cr16c_elf_ncom_symbol;
- }
- asym->section = &cr16c_elf_ncom_section;
- asym->value = elfsym->internal_elf_sym.st_size;
- break;
- }
-}
-
-/* Hook called by the linker routine which adds symbols from an object
- file. We must handle the special cr16c section numbers here. */
-
-static bfd_boolean
-elf32_cr16c_add_symbol_hook (bfd *abfd,
- struct bfd_link_info *info ATTRIBUTE_UNUSED,
- Elf_Internal_Sym *sym,
- const char **namep ATTRIBUTE_UNUSED,
- flagword *flagsp ATTRIBUTE_UNUSED,
- asection **secp,
- bfd_vma *valp)
-{
- unsigned int indx = sym->st_shndx;
-
- switch (indx)
- {
- case SHN_CR16C_FCOMMON:
- *secp = bfd_make_section_old_way (abfd, ".fcommon");
- (*secp)->flags |= SEC_IS_COMMON;
- *valp = sym->st_size;
- break;
- case SHN_CR16C_NCOMMON:
- *secp = bfd_make_section_old_way (abfd, ".ncommon");
- (*secp)->flags |= SEC_IS_COMMON;
- *valp = sym->st_size;
- break;
- }
-
- return TRUE;
-}
-
-static int
-elf32_cr16c_link_output_symbol_hook (struct bfd_link_info *info ATTRIBUTE_UNUSED,
- const char *name ATTRIBUTE_UNUSED,
- Elf_Internal_Sym *sym,
- asection *input_sec,
- struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
-{
- /* If we see a common symbol, which implies a relocatable link, then
- if a symbol was in a special common section in an input file, mark
- it as a special common in the output file. */
-
- if (sym->st_shndx == SHN_COMMON)
- {
- if (strcmp (input_sec->name, ".fcommon") == 0)
- sym->st_shndx = SHN_CR16C_FCOMMON;
- else if (strcmp (input_sec->name, ".ncommon") == 0)
- sym->st_shndx = SHN_CR16C_NCOMMON;
- }
-
- return 1;
-}
-
-/* Definitions for setting CR16C target vector. */
-#define TARGET_LITTLE_SYM cr16c_elf32_vec
-#define TARGET_LITTLE_NAME "elf32-cr16c"
-#define ELF_ARCH bfd_arch_cr16c
-#define ELF_MACHINE_CODE EM_CR
-#define ELF_MAXPAGESIZE 0x1
-#define elf_symbol_leading_char '_'
-
-#define bfd_elf32_bfd_reloc_type_lookup elf_cr16c_reloc_type_lookup
-#define bfd_elf32_bfd_reloc_name_lookup elf_cr16c_reloc_name_lookup
-#define elf_info_to_howto elf_cr16c_info_to_howto
-#define elf_info_to_howto_rel elf_cr16c_info_to_howto_rel
-#define elf_backend_relocate_section elf32_cr16c_relocate_section
-#define elf_backend_symbol_processing elf32_cr16c_symbol_processing
-#define elf_backend_section_from_bfd_section elf32_cr16c_section_from_bfd_section
-#define elf_backend_add_symbol_hook elf32_cr16c_add_symbol_hook
-#define elf_backend_link_output_symbol_hook elf32_cr16c_link_output_symbol_hook
-
-#define elf_backend_can_gc_sections 1
-
-#include "elf32-target.h"
generated by cgit v1.1 at 2024-09-12 00:02:14 +0000