diff options
Diffstat (limited to 'binutils-2.17/bfd/elf32-v850.c')
| -rw-r--r-- | binutils-2.17/bfd/elf32-v850.c | 3095 |
1 files changed, 0 insertions, 3095 deletions
diff --git a/binutils-2.17/bfd/elf32-v850.c b/binutils-2.17/bfd/elf32-v850.c deleted file mode 100644 index e2c29ee1..00000000 --- a/binutils-2.17/bfd/elf32-v850.c +++ /dev/null @@ -1,3095 +0,0 @@ -/* V850-specific support for 32-bit ELF - Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 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. */ - -/* XXX FIXME: This code is littered with 32bit int, 16bit short, 8bit char - dependencies. As is the gas & simulator code for the v850. */ - -#include "bfd.h" -#include "sysdep.h" -#include "bfdlink.h" -#include "libbfd.h" -#include "elf-bfd.h" -#include "elf/v850.h" -#include "libiberty.h" - -/* Sign-extend a 24-bit number. */ -#define SEXT24(x) ((((x) & 0xffffff) ^ 0x800000) - 0x800000) - -/* 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 -v850_elf_check_relocs (bfd *abfd, - struct bfd_link_info *info, - asection *sec, - const Elf_Internal_Rela *relocs) -{ - bfd_boolean ret = TRUE; - bfd *dynobj; - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - const Elf_Internal_Rela *rel; - const Elf_Internal_Rela *rel_end; - asection *sreloc; - enum v850_reloc_type r_type; - int other = 0; - const char *common = NULL; - - if (info->relocatable) - return TRUE; - -#ifdef DEBUG - _bfd_error_handler ("v850_elf_check_relocs called for section %A in %B", - sec, abfd); -#endif - - dynobj = elf_hash_table (info)->dynobj; - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (abfd); - 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]; - 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; - } - - r_type = (enum v850_reloc_type) ELF32_R_TYPE (rel->r_info); - switch (r_type) - { - default: - case R_V850_NONE: - case R_V850_9_PCREL: - case R_V850_22_PCREL: - case R_V850_HI16_S: - case R_V850_HI16: - case R_V850_LO16: - case R_V850_LO16_SPLIT_OFFSET: - case R_V850_ABS32: - case R_V850_REL32: - case R_V850_16: - case R_V850_8: - case R_V850_CALLT_6_7_OFFSET: - case R_V850_CALLT_16_16_OFFSET: - break; - - /* This relocation describes the C++ object vtable hierarchy. - Reconstruct it for later use during GC. */ - case R_V850_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_V850_GNU_VTENTRY: - if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) - return FALSE; - break; - - case R_V850_SDA_16_16_SPLIT_OFFSET: - case R_V850_SDA_16_16_OFFSET: - case R_V850_SDA_15_16_OFFSET: - other = V850_OTHER_SDA; - common = ".scommon"; - goto small_data_common; - - case R_V850_ZDA_16_16_SPLIT_OFFSET: - case R_V850_ZDA_16_16_OFFSET: - case R_V850_ZDA_15_16_OFFSET: - other = V850_OTHER_ZDA; - common = ".zcommon"; - goto small_data_common; - - case R_V850_TDA_4_5_OFFSET: - case R_V850_TDA_4_4_OFFSET: - case R_V850_TDA_6_8_OFFSET: - case R_V850_TDA_7_8_OFFSET: - case R_V850_TDA_7_7_OFFSET: - case R_V850_TDA_16_16_OFFSET: - other = V850_OTHER_TDA; - common = ".tcommon"; - /* fall through */ - -#define V850_OTHER_MASK (V850_OTHER_TDA | V850_OTHER_SDA | V850_OTHER_ZDA) - - small_data_common: - if (h) - { - /* Flag which type of relocation was used. */ - h->other |= other; - if ((h->other & V850_OTHER_MASK) != (other & V850_OTHER_MASK) - && (h->other & V850_OTHER_ERROR) == 0) - { - const char * msg; - static char buff[200]; /* XXX */ - - switch (h->other & V850_OTHER_MASK) - { - default: - msg = _("Variable `%s' cannot occupy in multiple small data regions"); - break; - case V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA: - msg = _("Variable `%s' can only be in one of the small, zero, and tiny data regions"); - break; - case V850_OTHER_SDA | V850_OTHER_ZDA: - msg = _("Variable `%s' cannot be in both small and zero data regions simultaneously"); - break; - case V850_OTHER_SDA | V850_OTHER_TDA: - msg = _("Variable `%s' cannot be in both small and tiny data regions simultaneously"); - break; - case V850_OTHER_ZDA | V850_OTHER_TDA: - msg = _("Variable `%s' cannot be in both zero and tiny data regions simultaneously"); - break; - } - - sprintf (buff, msg, h->root.root.string); - info->callbacks->warning (info, buff, h->root.root.string, - abfd, h->root.u.def.section, - (bfd_vma) 0); - - bfd_set_error (bfd_error_bad_value); - h->other |= V850_OTHER_ERROR; - ret = FALSE; - } - } - - if (h && h->root.type == bfd_link_hash_common - && h->root.u.c.p - && !strcmp (bfd_get_section_name (abfd, h->root.u.c.p->section), "COMMON")) - { - asection * section; - - section = h->root.u.c.p->section = bfd_make_section_old_way (abfd, common); - section->flags |= SEC_IS_COMMON; - } - -#ifdef DEBUG - fprintf (stderr, "v850_elf_check_relocs, found %s relocation for %s%s\n", - v850_elf_howto_table[ (int)r_type ].name, - (h && h->root.root.string) ? h->root.root.string : "<unknown>", - (h->root.type == bfd_link_hash_common) ? ", symbol is common" : ""); -#endif - break; - } - } - - return ret; -} - -/* In the old version, when an entry was checked out from the table, - it was deleted. This produced an error if the entry was needed - more than once, as the second attempted retry failed. - - In the current version, the entry is not deleted, instead we set - the field 'found' to TRUE. If a second lookup matches the same - entry, then we know that the hi16s reloc has already been updated - and does not need to be updated a second time. - - TODO - TOFIX: If it is possible that we need to restore 2 different - addresses from the same table entry, where the first generates an - overflow, whilst the second do not, then this code will fail. */ - -typedef struct hi16s_location -{ - bfd_vma addend; - bfd_byte * address; - unsigned long counter; - bfd_boolean found; - struct hi16s_location * next; -} -hi16s_location; - -static hi16s_location * previous_hi16s; -static hi16s_location * free_hi16s; -static unsigned long hi16s_counter; - -static void -remember_hi16s_reloc (bfd *abfd, bfd_vma addend, bfd_byte *address) -{ - hi16s_location * entry = NULL; - bfd_size_type amt = sizeof (* free_hi16s); - - /* Find a free structure. */ - if (free_hi16s == NULL) - free_hi16s = bfd_zalloc (abfd, amt); - - entry = free_hi16s; - free_hi16s = free_hi16s->next; - - entry->addend = addend; - entry->address = address; - entry->counter = hi16s_counter ++; - entry->found = FALSE; - entry->next = previous_hi16s; - previous_hi16s = entry; - - /* Cope with wrap around of our counter. */ - if (hi16s_counter == 0) - { - /* XXX: Assume that all counter entries differ only in their low 16 bits. */ - for (entry = previous_hi16s; entry != NULL; entry = entry->next) - entry->counter &= 0xffff; - - hi16s_counter = 0x10000; - } -} - -static bfd_byte * -find_remembered_hi16s_reloc (bfd_vma addend, bfd_boolean *already_found) -{ - hi16s_location *match = NULL; - hi16s_location *entry; - hi16s_location *previous = NULL; - hi16s_location *prev; - bfd_byte *addr; - - /* Search the table. Record the most recent entry that matches. */ - for (entry = previous_hi16s; entry; entry = entry->next) - { - if (entry->addend == addend - && (match == NULL || match->counter < entry->counter)) - { - previous = prev; - match = entry; - } - - prev = entry; - } - - if (match == NULL) - return NULL; - - /* Extract the address. */ - addr = match->address; - - /* Remember if this entry has already been used before. */ - if (already_found) - * already_found = match->found; - - /* Note that this entry has now been used. */ - match->found = TRUE; - - return addr; -} - -/* Calculate the final operand value for a R_V850_LO16 or - R_V850_LO16_SPLIT_OFFSET. *INSN is the current operand value and - ADDEND is the sum of the relocation symbol and offset. Store the - operand value in *INSN and return true on success. - - The assembler has already done some of this: If the value stored in - the instruction has its 15th bit set, (counting from zero) then the - assembler will have added 1 to the value stored in the associated - HI16S reloc. So for example, these relocations: - - movhi hi( fred ), r0, r1 - movea lo( fred ), r1, r1 - - will store 0 in the value fields for the MOVHI and MOVEA instructions - and addend will be the address of fred, but for these instructions: - - movhi hi( fred + 0x123456), r0, r1 - movea lo( fred + 0x123456), r1, r1 - - the value stored in the MOVHI instruction will be 0x12 and the value - stored in the MOVEA instruction will be 0x3456. If however the - instructions were: - - movhi hi( fred + 0x10ffff), r0, r1 - movea lo( fred + 0x10ffff), r1, r1 - - then the value stored in the MOVHI instruction would be 0x11 (not - 0x10) and the value stored in the MOVEA instruction would be 0xffff. - Thus (assuming for the moment that the addend is 0), at run time the - MOVHI instruction loads 0x110000 into r1, then the MOVEA instruction - adds 0xffffffff (sign extension!) producing 0x10ffff. Similarly if - the instructions were: - - movhi hi( fred - 1), r0, r1 - movea lo( fred - 1), r1, r1 - - then 0 is stored in the MOVHI instruction and -1 is stored in the - MOVEA instruction. - - Overflow can occur if the addition of the value stored in the - instruction plus the addend sets the 15th bit when before it was clear. - This is because the 15th bit will be sign extended into the high part, - thus reducing its value by one, but since the 15th bit was originally - clear, the assembler will not have added 1 to the previous HI16S reloc - to compensate for this effect. For example: - - movhi hi( fred + 0x123456), r0, r1 - movea lo( fred + 0x123456), r1, r1 - - The value stored in HI16S reloc is 0x12, the value stored in the LO16 - reloc is 0x3456. If we assume that the address of fred is 0x00007000 - then the relocations become: - - HI16S: 0x0012 + (0x00007000 >> 16) = 0x12 - LO16: 0x3456 + (0x00007000 & 0xffff) = 0xa456 - - but when the instructions are executed, the MOVEA instruction's value - is signed extended, so the sum becomes: - - 0x00120000 - + 0xffffa456 - ------------ - 0x0011a456 but 'fred + 0x123456' = 0x0012a456 - - Note that if the 15th bit was set in the value stored in the LO16 - reloc, then we do not have to do anything: - - movhi hi( fred + 0x10ffff), r0, r1 - movea lo( fred + 0x10ffff), r1, r1 - - HI16S: 0x0011 + (0x00007000 >> 16) = 0x11 - LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff - - 0x00110000 - + 0x00006fff - ------------ - 0x00116fff = fred + 0x10ffff = 0x7000 + 0x10ffff - - Overflow can also occur if the computation carries into the 16th bit - and it also results in the 15th bit having the same value as the 15th - bit of the original value. What happens is that the HI16S reloc - will have already examined the 15th bit of the original value and - added 1 to the high part if the bit is set. This compensates for the - sign extension of 15th bit of the result of the computation. But now - there is a carry into the 16th bit, and this has not been allowed for. - - So, for example if fred is at address 0xf000: - - movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set] - movea lo( fred + 0xffff), r1, r1 - - HI16S: 0x0001 + (0x0000f000 >> 16) = 0x0001 - LO16: 0xffff + (0x0000f000 & 0xffff) = 0xefff (carry into bit 16 is lost) - - 0x00010000 - + 0xffffefff - ------------ - 0x0000efff but 'fred + 0xffff' = 0x0001efff - - Similarly, if the 15th bit remains clear, but overflow occurs into - the 16th bit then (assuming the address of fred is 0xf000): - - movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear] - movea lo( fred + 0x7000), r1, r1 - - HI16S: 0x0000 + (0x0000f000 >> 16) = 0x0000 - LO16: 0x7000 + (0x0000f000 & 0xffff) = 0x6fff (carry into bit 16 is lost) - - 0x00000000 - + 0x00006fff - ------------ - 0x00006fff but 'fred + 0x7000' = 0x00016fff - - Note - there is no need to change anything if a carry occurs, and the - 15th bit changes its value from being set to being clear, as the HI16S - reloc will have already added in 1 to the high part for us: - - movhi hi( fred + 0xffff), r0, r1 [bit 15 of the offset is set] - movea lo( fred + 0xffff), r1, r1 - - HI16S: 0x0001 + (0x00007000 >> 16) - LO16: 0xffff + (0x00007000 & 0xffff) = 0x6fff (carry into bit 16 is lost) - - 0x00010000 - + 0x00006fff (bit 15 not set, so the top half is zero) - ------------ - 0x00016fff which is right (assuming that fred is at 0x7000) - - but if the 15th bit goes from being clear to being set, then we must - once again handle overflow: - - movhi hi( fred + 0x7000), r0, r1 [bit 15 of the offset is clear] - movea lo( fred + 0x7000), r1, r1 - - HI16S: 0x0000 + (0x0000ffff >> 16) - LO16: 0x7000 + (0x0000ffff & 0xffff) = 0x6fff (carry into bit 16) - - 0x00000000 - + 0x00006fff (bit 15 not set, so the top half is zero) - ------------ - 0x00006fff which is wrong (assuming that fred is at 0xffff). */ - -static bfd_boolean -v850_elf_perform_lo16_relocation (bfd *abfd, unsigned long *insn, - unsigned long addend) -{ -#define BIT15_SET(x) ((x) & 0x8000) -#define OVERFLOWS(a,i) ((((a) & 0xffff) + (i)) > 0xffff) - - if ((BIT15_SET (*insn + addend) && ! BIT15_SET (addend)) - || (OVERFLOWS (addend, *insn) - && ((! BIT15_SET (*insn)) || (BIT15_SET (addend))))) - { - bfd_boolean already_updated; - bfd_byte *hi16s_address = find_remembered_hi16s_reloc - (addend, & already_updated); - - /* Amend the matching HI16_S relocation. */ - if (hi16s_address != NULL) - { - if (! already_updated) - { - unsigned long hi_insn = bfd_get_16 (abfd, hi16s_address); - hi_insn += 1; - bfd_put_16 (abfd, hi_insn, hi16s_address); - } - } - else - { - fprintf (stderr, _("FAILED to find previous HI16 reloc\n")); - return FALSE; - } - } -#undef OVERFLOWS -#undef BIT15_SET - - /* Do not complain if value has top bit set, as this has been - anticipated. */ - *insn = (*insn + addend) & 0xffff; - return TRUE; -} - -/* FIXME: The code here probably ought to be removed and the code in reloc.c - allowed to do its stuff instead. At least for most of the relocs, anyway. */ - -static bfd_reloc_status_type -v850_elf_perform_relocation (bfd *abfd, - unsigned int r_type, - bfd_vma addend, - bfd_byte *address) -{ - unsigned long insn; - unsigned long result; - bfd_signed_vma saddend = (bfd_signed_vma) addend; - - switch (r_type) - { - default: - return bfd_reloc_notsupported; - - case R_V850_REL32: - case R_V850_ABS32: - bfd_put_32 (abfd, addend, address); - return bfd_reloc_ok; - - case R_V850_22_PCREL: - if (saddend > 0x1fffff || saddend < -0x200000) - return bfd_reloc_overflow; - - if ((addend % 2) != 0) - return bfd_reloc_dangerous; - - insn = bfd_get_32 (abfd, address); - insn &= ~0xfffe003f; - insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16)); - bfd_put_32 (abfd, (bfd_vma) insn, address); - return bfd_reloc_ok; - - case R_V850_9_PCREL: - if (saddend > 0xff || saddend < -0x100) - return bfd_reloc_overflow; - - if ((addend % 2) != 0) - return bfd_reloc_dangerous; - - insn = bfd_get_16 (abfd, address); - insn &= ~ 0xf870; - insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3); - break; - - case R_V850_HI16: - addend += (bfd_get_16 (abfd, address) << 16); - addend = (addend >> 16); - insn = addend; - break; - - case R_V850_HI16_S: - /* Remember where this relocation took place. */ - remember_hi16s_reloc (abfd, addend, address); - - addend += (bfd_get_16 (abfd, address) << 16); - addend = (addend >> 16) + ((addend & 0x8000) != 0); - - /* This relocation cannot overflow. */ - if (addend > 0x7fff) - addend = 0; - - insn = addend; - break; - - case R_V850_LO16: - insn = bfd_get_16 (abfd, address); - if (! v850_elf_perform_lo16_relocation (abfd, &insn, addend)) - return bfd_reloc_overflow; - break; - - case R_V850_8: - addend += (char) bfd_get_8 (abfd, address); - - saddend = (bfd_signed_vma) addend; - - if (saddend > 0x7f || saddend < -0x80) - return bfd_reloc_overflow; - - bfd_put_8 (abfd, addend, address); - return bfd_reloc_ok; - - case R_V850_CALLT_16_16_OFFSET: - addend += bfd_get_16 (abfd, address); - - saddend = (bfd_signed_vma) addend; - - if (saddend > 0xffff || saddend < 0) - return bfd_reloc_overflow; - - insn = addend; - break; - - case R_V850_16: - case R_V850_SDA_16_16_OFFSET: - case R_V850_ZDA_16_16_OFFSET: - case R_V850_TDA_16_16_OFFSET: - addend += bfd_get_16 (abfd, address); - - saddend = (bfd_signed_vma) addend; - - if (saddend > 0x7fff || saddend < -0x8000) - return bfd_reloc_overflow; - - insn = addend; - break; - - case R_V850_SDA_15_16_OFFSET: - case R_V850_ZDA_15_16_OFFSET: - insn = bfd_get_16 (abfd, address); - addend += (insn & 0xfffe); - - saddend = (bfd_signed_vma) addend; - - if (saddend > 0x7ffe || saddend < -0x8000) - return bfd_reloc_overflow; - - if (addend & 1) - return bfd_reloc_dangerous; - - insn = (addend &~ (bfd_vma) 1) | (insn & 1); - break; - - case R_V850_TDA_6_8_OFFSET: - insn = bfd_get_16 (abfd, address); - addend += ((insn & 0x7e) << 1); - - saddend = (bfd_signed_vma) addend; - - if (saddend > 0xfc || saddend < 0) - return bfd_reloc_overflow; - - if (addend & 3) - return bfd_reloc_dangerous; - - insn &= 0xff81; - insn |= (addend >> 1); - break; - - case R_V850_TDA_7_8_OFFSET: - insn = bfd_get_16 (abfd, address); - addend += ((insn & 0x7f) << 1); - - saddend = (bfd_signed_vma) addend; - - if (saddend > 0xfe || saddend < 0) - return bfd_reloc_overflow; - - if (addend & 1) - return bfd_reloc_dangerous; - - insn &= 0xff80; - insn |= (addend >> 1); - break; - - case R_V850_TDA_7_7_OFFSET: - insn = bfd_get_16 (abfd, address); - addend += insn & 0x7f; - - saddend = (bfd_signed_vma) addend; - - if (saddend > 0x7f || saddend < 0) - return bfd_reloc_overflow; - - insn &= 0xff80; - insn |= addend; - break; - - case R_V850_TDA_4_5_OFFSET: - insn = bfd_get_16 (abfd, address); - addend += ((insn & 0xf) << 1); - - saddend = (bfd_signed_vma) addend; - - if (saddend > 0x1e || saddend < 0) - return bfd_reloc_overflow; - - if (addend & 1) - return bfd_reloc_dangerous; - - insn &= 0xfff0; - insn |= (addend >> 1); - break; - - case R_V850_TDA_4_4_OFFSET: - insn = bfd_get_16 (abfd, address); - addend += insn & 0xf; - - saddend = (bfd_signed_vma) addend; - - if (saddend > 0xf || saddend < 0) - return bfd_reloc_overflow; - - insn &= 0xfff0; - insn |= addend; - break; - - case R_V850_LO16_SPLIT_OFFSET: - insn = bfd_get_32 (abfd, address); - result = ((insn & 0xfffe0000) >> 16) | ((insn & 0x20) >> 5); - if (! v850_elf_perform_lo16_relocation (abfd, &result, addend)) - return bfd_reloc_overflow; - insn = (((result << 16) & 0xfffe0000) - | ((result << 5) & 0x20) - | (insn & ~0xfffe0020)); - bfd_put_32 (abfd, insn, address); - return bfd_reloc_ok; - - case R_V850_ZDA_16_16_SPLIT_OFFSET: - case R_V850_SDA_16_16_SPLIT_OFFSET: - insn = bfd_get_32 (abfd, address); - addend += ((insn & 0xfffe0000) >> 16) + ((insn & 0x20) >> 5); - - saddend = (bfd_signed_vma) addend; - - if (saddend > 0x7fff || saddend < -0x8000) - return bfd_reloc_overflow; - - insn &= 0x0001ffdf; - insn |= (addend & 1) << 5; - insn |= (addend &~ (bfd_vma) 1) << 16; - - bfd_put_32 (abfd, (bfd_vma) insn, address); - return bfd_reloc_ok; - - case R_V850_CALLT_6_7_OFFSET: - insn = bfd_get_16 (abfd, address); - addend += ((insn & 0x3f) << 1); - - saddend = (bfd_signed_vma) addend; - - if (saddend > 0x7e || saddend < 0) - return bfd_reloc_overflow; - - if (addend & 1) - return bfd_reloc_dangerous; - - insn &= 0xff80; - insn |= (addend >> 1); - break; - - case R_V850_GNU_VTINHERIT: - case R_V850_GNU_VTENTRY: - return bfd_reloc_ok; - - } - - bfd_put_16 (abfd, (bfd_vma) insn, address); - return bfd_reloc_ok; -} - -/* Insert the addend into the instruction. */ - -static bfd_reloc_status_type -v850_elf_reloc (bfd *abfd ATTRIBUTE_UNUSED, - arelent *reloc, - asymbol *symbol, - void * data ATTRIBUTE_UNUSED, - asection *isection, - bfd *obfd, - char **err ATTRIBUTE_UNUSED) -{ - long relocation; - - /* If there is an output BFD, - and the symbol is not a section name (which is only defined at final link time), - and either we are not putting the addend into the instruction - or the addend is zero, so there is nothing to add into the instruction - then just fixup the address and return. */ - if (obfd != NULL - && (symbol->flags & BSF_SECTION_SYM) == 0 - && (! reloc->howto->partial_inplace - || reloc->addend == 0)) - { - reloc->address += isection->output_offset; - return bfd_reloc_ok; - } - - /* Catch relocs involving undefined symbols. */ - if (bfd_is_und_section (symbol->section) - && (symbol->flags & BSF_WEAK) == 0 - && obfd == NULL) - return bfd_reloc_undefined; - - /* We handle final linking of some relocs ourselves. */ - - /* Is the address of the relocation really within the section? */ - if (reloc->address > bfd_get_section_limit (abfd, isection)) - return bfd_reloc_outofrange; - - /* Work out which section the relocation is targeted at and the - initial relocation command value. */ - - if (reloc->howto->pc_relative) - return bfd_reloc_ok; - - /* Get symbol value. (Common symbols are special.) */ - if (bfd_is_com_section (symbol->section)) - relocation = 0; - else - relocation = symbol->value; - - /* Convert input-section-relative symbol value to absolute + addend. */ - relocation += symbol->section->output_section->vma; - relocation += symbol->section->output_offset; - relocation += reloc->addend; - - reloc->addend = relocation; - return bfd_reloc_ok; -} - -/* This function is used for relocs which are only used - for relaxing, which the linker should otherwise ignore. */ - -static bfd_reloc_status_type -v850_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, - arelent *reloc_entry, - asymbol *symbol ATTRIBUTE_UNUSED, - void * data ATTRIBUTE_UNUSED, - asection *input_section, - bfd *output_bfd, - char **error_message ATTRIBUTE_UNUSED) -{ - if (output_bfd != NULL) - reloc_entry->address += input_section->output_offset; - - return bfd_reloc_ok; -} -/* Note: It is REQUIRED that the 'type' value of each entry - in this array match the index of the entry in the array. */ -static reloc_howto_type v850_elf_howto_table[] = -{ - /* This reloc does nothing. */ - HOWTO (R_V850_NONE, /* 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_V850_NONE", /* Name. */ - FALSE, /* Partial_inplace. */ - 0, /* Src_mask. */ - 0, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* A PC relative 9 bit branch. */ - HOWTO (R_V850_9_PCREL, /* Type. */ - 2, /* Rightshift. */ - 2, /* Size (0 = byte, 1 = short, 2 = long). */ - 26, /* Bitsize. */ - TRUE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_bitfield, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_9_PCREL", /* Name. */ - FALSE, /* Partial_inplace. */ - 0x00ffffff, /* Src_mask. */ - 0x00ffffff, /* Dst_mask. */ - TRUE), /* PCrel_offset. */ - - /* A PC relative 22 bit branch. */ - HOWTO (R_V850_22_PCREL, /* Type. */ - 2, /* Rightshift. */ - 2, /* Size (0 = byte, 1 = short, 2 = long). */ - 22, /* Bitsize. */ - TRUE, /* PC_relative. */ - 7, /* Bitpos. */ - complain_overflow_signed, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_22_PCREL", /* Name. */ - FALSE, /* Partial_inplace. */ - 0x07ffff80, /* Src_mask. */ - 0x07ffff80, /* Dst_mask. */ - TRUE), /* PCrel_offset. */ - - /* High 16 bits of symbol value. */ - HOWTO (R_V850_HI16_S, /* Type. */ - 0, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 16, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_HI16_S", /* Name. */ - FALSE, /* Partial_inplace. */ - 0xffff, /* Src_mask. */ - 0xffff, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* High 16 bits of symbol value. */ - HOWTO (R_V850_HI16, /* Type. */ - 0, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 16, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_HI16", /* Name. */ - FALSE, /* Partial_inplace. */ - 0xffff, /* Src_mask. */ - 0xffff, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* Low 16 bits of symbol value. */ - HOWTO (R_V850_LO16, /* Type. */ - 0, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 16, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_LO16", /* Name. */ - FALSE, /* Partial_inplace. */ - 0xffff, /* Src_mask. */ - 0xffff, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* Simple 32bit reloc. */ - HOWTO (R_V850_ABS32, /* Type. */ - 0, /* Rightshift. */ - 2, /* Size (0 = byte, 1 = short, 2 = long). */ - 32, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_ABS32", /* Name. */ - FALSE, /* Partial_inplace. */ - 0xffffffff, /* Src_mask. */ - 0xffffffff, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* Simple 16bit reloc. */ - HOWTO (R_V850_16, /* Type. */ - 0, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 16, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - bfd_elf_generic_reloc, /* Special_function. */ - "R_V850_16", /* Name. */ - FALSE, /* Partial_inplace. */ - 0xffff, /* Src_mask. */ - 0xffff, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* Simple 8bit reloc. */ - HOWTO (R_V850_8, /* Type. */ - 0, /* Rightshift. */ - 0, /* Size (0 = byte, 1 = short, 2 = long). */ - 8, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - bfd_elf_generic_reloc, /* Special_function. */ - "R_V850_8", /* Name. */ - FALSE, /* Partial_inplace. */ - 0xff, /* Src_mask. */ - 0xff, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* 16 bit offset from the short data area pointer. */ - HOWTO (R_V850_SDA_16_16_OFFSET, /* Type. */ - 0, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 16, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_SDA_16_16_OFFSET", /* Name. */ - FALSE, /* Partial_inplace. */ - 0xffff, /* Src_mask. */ - 0xffff, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* 15 bit offset from the short data area pointer. */ - HOWTO (R_V850_SDA_15_16_OFFSET, /* Type. */ - 1, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 16, /* Bitsize. */ - FALSE, /* PC_relative. */ - 1, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_SDA_15_16_OFFSET", /* Name. */ - FALSE, /* Partial_inplace. */ - 0xfffe, /* Src_mask. */ - 0xfffe, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* 16 bit offset from the zero data area pointer. */ - HOWTO (R_V850_ZDA_16_16_OFFSET, /* Type. */ - 0, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 16, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_ZDA_16_16_OFFSET", /* Name. */ - FALSE, /* Partial_inplace. */ - 0xffff, /* Src_mask. */ - 0xffff, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* 15 bit offset from the zero data area pointer. */ - HOWTO (R_V850_ZDA_15_16_OFFSET, /* Type. */ - 1, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 16, /* Bitsize. */ - FALSE, /* PC_relative. */ - 1, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_ZDA_15_16_OFFSET", /* Name. */ - FALSE, /* Partial_inplace. */ - 0xfffe, /* Src_mask. */ - 0xfffe, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* 6 bit offset from the tiny data area pointer. */ - HOWTO (R_V850_TDA_6_8_OFFSET, /* Type. */ - 2, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 8, /* Bitsize. */ - FALSE, /* PC_relative. */ - 1, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_TDA_6_8_OFFSET", /* Name. */ - FALSE, /* Partial_inplace. */ - 0x7e, /* Src_mask. */ - 0x7e, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* 8 bit offset from the tiny data area pointer. */ - HOWTO (R_V850_TDA_7_8_OFFSET, /* Type. */ - 1, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 8, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_TDA_7_8_OFFSET", /* Name. */ - FALSE, /* Partial_inplace. */ - 0x7f, /* Src_mask. */ - 0x7f, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* 7 bit offset from the tiny data area pointer. */ - HOWTO (R_V850_TDA_7_7_OFFSET, /* Type. */ - 0, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 7, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_TDA_7_7_OFFSET", /* Name. */ - FALSE, /* Partial_inplace. */ - 0x7f, /* Src_mask. */ - 0x7f, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* 16 bit offset from the tiny data area pointer! */ - HOWTO (R_V850_TDA_16_16_OFFSET, /* Type. */ - 0, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 16, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_TDA_16_16_OFFSET", /* Name. */ - FALSE, /* Partial_inplace. */ - 0xffff, /* Src_mask. */ - 0xfff, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* 5 bit offset from the tiny data area pointer. */ - HOWTO (R_V850_TDA_4_5_OFFSET, /* Type. */ - 1, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 5, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_TDA_4_5_OFFSET", /* Name. */ - FALSE, /* Partial_inplace. */ - 0x0f, /* Src_mask. */ - 0x0f, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* 4 bit offset from the tiny data area pointer. */ - HOWTO (R_V850_TDA_4_4_OFFSET, /* Type. */ - 0, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 4, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_TDA_4_4_OFFSET", /* Name. */ - FALSE, /* Partial_inplace. */ - 0x0f, /* Src_mask. */ - 0x0f, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* 16 bit offset from the short data area pointer. */ - HOWTO (R_V850_SDA_16_16_SPLIT_OFFSET, /* Type. */ - 0, /* Rightshift. */ - 2, /* Size (0 = byte, 1 = short, 2 = long). */ - 16, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_SDA_16_16_SPLIT_OFFSET",/* Name. */ - FALSE, /* Partial_inplace. */ - 0xfffe0020, /* Src_mask. */ - 0xfffe0020, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* 16 bit offset from the zero data area pointer. */ - HOWTO (R_V850_ZDA_16_16_SPLIT_OFFSET, /* Type. */ - 0, /* Rightshift. */ - 2, /* Size (0 = byte, 1 = short, 2 = long). */ - 16, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_ZDA_16_16_SPLIT_OFFSET",/* Name. */ - FALSE, /* Partial_inplace. */ - 0xfffe0020, /* Src_mask. */ - 0xfffe0020, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* 6 bit offset from the call table base pointer. */ - HOWTO (R_V850_CALLT_6_7_OFFSET, /* Type. */ - 0, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 7, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_CALLT_6_7_OFFSET", /* Name. */ - FALSE, /* Partial_inplace. */ - 0x3f, /* Src_mask. */ - 0x3f, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* 16 bit offset from the call table base pointer. */ - HOWTO (R_V850_CALLT_16_16_OFFSET, /* Type. */ - 0, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 16, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_CALLT_16_16_OFFSET", /* Name. */ - FALSE, /* Partial_inplace. */ - 0xffff, /* Src_mask. */ - 0xffff, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* GNU extension to record C++ vtable hierarchy */ - HOWTO (R_V850_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_V850_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_V850_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_V850_GNU_VTENTRY", /* Name. */ - FALSE, /* Partial_inplace. */ - 0, /* Src_mask. */ - 0, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* Indicates a .longcall pseudo-op. The compiler will generate a .longcall - pseudo-op when it finds a function call which can be relaxed. */ - HOWTO (R_V850_LONGCALL, /* Type. */ - 0, /* Rightshift. */ - 2, /* Size (0 = byte, 1 = short, 2 = long). */ - 32, /* Bitsize. */ - TRUE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_signed, /* Complain_on_overflow. */ - v850_elf_ignore_reloc, /* Special_function. */ - "R_V850_LONGCALL", /* Name. */ - FALSE, /* Partial_inplace. */ - 0, /* Src_mask. */ - 0, /* Dst_mask. */ - TRUE), /* PCrel_offset. */ - - /* Indicates a .longjump pseudo-op. The compiler will generate a - .longjump pseudo-op when it finds a branch which can be relaxed. */ - HOWTO (R_V850_LONGJUMP, /* Type. */ - 0, /* Rightshift. */ - 2, /* Size (0 = byte, 1 = short, 2 = long). */ - 32, /* Bitsize. */ - TRUE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_signed, /* Complain_on_overflow. */ - v850_elf_ignore_reloc, /* Special_function. */ - "R_V850_LONGJUMP", /* Name. */ - FALSE, /* Partial_inplace. */ - 0, /* Src_mask. */ - 0, /* Dst_mask. */ - TRUE), /* PCrel_offset. */ - - HOWTO (R_V850_ALIGN, /* Type. */ - 0, /* Rightshift. */ - 1, /* Size (0 = byte, 1 = short, 2 = long). */ - 0, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_unsigned, /* Complain_on_overflow. */ - v850_elf_ignore_reloc, /* Special_function. */ - "R_V850_ALIGN", /* Name. */ - FALSE, /* Partial_inplace. */ - 0, /* Src_mask. */ - 0, /* Dst_mask. */ - TRUE), /* PCrel_offset. */ - - /* Simple pc-relative 32bit reloc. */ - HOWTO (R_V850_REL32, /* Type. */ - 0, /* Rightshift. */ - 2, /* Size (0 = byte, 1 = short, 2 = long). */ - 32, /* Bitsize. */ - TRUE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_REL32", /* Name. */ - FALSE, /* Partial_inplace. */ - 0xffffffff, /* Src_mask. */ - 0xffffffff, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ - - /* An ld.bu version of R_V850_LO16. */ - HOWTO (R_V850_LO16_SPLIT_OFFSET, /* Type. */ - 0, /* Rightshift. */ - 2, /* Size (0 = byte, 1 = short, 2 = long). */ - 16, /* Bitsize. */ - FALSE, /* PC_relative. */ - 0, /* Bitpos. */ - complain_overflow_dont, /* Complain_on_overflow. */ - v850_elf_reloc, /* Special_function. */ - "R_V850_LO16_SPLIT_OFFSET", /* Name. */ - FALSE, /* Partial_inplace. */ - 0xfffe0020, /* Src_mask. */ - 0xfffe0020, /* Dst_mask. */ - FALSE), /* PCrel_offset. */ -}; - -/* Map BFD reloc types to V850 ELF reloc types. */ - -struct v850_elf_reloc_map -{ - /* BFD_RELOC_V850_CALLT_16_16_OFFSET is 258, which will not fix in an - unsigned char. */ - bfd_reloc_code_real_type bfd_reloc_val; - unsigned int elf_reloc_val; -}; - -static const struct v850_elf_reloc_map v850_elf_reloc_map[] = -{ - { BFD_RELOC_NONE, R_V850_NONE }, - { BFD_RELOC_V850_9_PCREL, R_V850_9_PCREL }, - { BFD_RELOC_V850_22_PCREL, R_V850_22_PCREL }, - { BFD_RELOC_HI16_S, R_V850_HI16_S }, - { BFD_RELOC_HI16, R_V850_HI16 }, - { BFD_RELOC_LO16, R_V850_LO16 }, - { BFD_RELOC_32, R_V850_ABS32 }, - { BFD_RELOC_32_PCREL, R_V850_REL32 }, - { BFD_RELOC_16, R_V850_16 }, - { BFD_RELOC_8, R_V850_8 }, - { BFD_RELOC_V850_SDA_16_16_OFFSET, R_V850_SDA_16_16_OFFSET }, - { BFD_RELOC_V850_SDA_15_16_OFFSET, R_V850_SDA_15_16_OFFSET }, - { BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V850_ZDA_16_16_OFFSET }, - { BFD_RELOC_V850_ZDA_15_16_OFFSET, R_V850_ZDA_15_16_OFFSET }, - { BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET }, - { BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET }, - { BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET }, - { BFD_RELOC_V850_TDA_16_16_OFFSET, R_V850_TDA_16_16_OFFSET }, - { BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET }, - { BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET }, - { BFD_RELOC_V850_LO16_SPLIT_OFFSET, R_V850_LO16_SPLIT_OFFSET }, - { BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET, R_V850_SDA_16_16_SPLIT_OFFSET }, - { BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, R_V850_ZDA_16_16_SPLIT_OFFSET }, - { BFD_RELOC_V850_CALLT_6_7_OFFSET, R_V850_CALLT_6_7_OFFSET }, - { BFD_RELOC_V850_CALLT_16_16_OFFSET, R_V850_CALLT_16_16_OFFSET }, - { BFD_RELOC_VTABLE_INHERIT, R_V850_GNU_VTINHERIT }, - { BFD_RELOC_VTABLE_ENTRY, R_V850_GNU_VTENTRY }, - { BFD_RELOC_V850_LONGCALL, R_V850_LONGCALL }, - { BFD_RELOC_V850_LONGJUMP, R_V850_LONGJUMP }, - { BFD_RELOC_V850_ALIGN, R_V850_ALIGN }, - -}; - -/* Map a bfd relocation into the appropriate howto structure. */ - -static reloc_howto_type * -v850_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, - bfd_reloc_code_real_type code) -{ - unsigned int i; - - for (i = ARRAY_SIZE (v850_elf_reloc_map); i --;) - if (v850_elf_reloc_map[i].bfd_reloc_val == code) - { - unsigned int elf_reloc_val = v850_elf_reloc_map[i].elf_reloc_val; - - BFD_ASSERT (v850_elf_howto_table[elf_reloc_val].type == elf_reloc_val); - - return v850_elf_howto_table + elf_reloc_val; - } - - return NULL; -} - -/* Set the howto pointer for an V850 ELF reloc. */ - -static void -v850_elf_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, - arelent *cache_ptr, - Elf_Internal_Rela *dst) -{ - unsigned int r_type; - - r_type = ELF32_R_TYPE (dst->r_info); - BFD_ASSERT (r_type < (unsigned int) R_V850_max); - cache_ptr->howto = &v850_elf_howto_table[r_type]; -} - -/* Set the howto pointer for a V850 ELF reloc (type RELA). */ - -static void -v850_elf_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, - arelent * cache_ptr, - Elf_Internal_Rela *dst) -{ - unsigned int r_type; - - r_type = ELF32_R_TYPE (dst->r_info); - BFD_ASSERT (r_type < (unsigned int) R_V850_max); - cache_ptr->howto = &v850_elf_howto_table[r_type]; -} - -static bfd_boolean -v850_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name) -{ - return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.')) - || (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')); -} - -/* We overload some of the bfd_reloc error codes for own purposes. */ -#define bfd_reloc_gp_not_found bfd_reloc_other -#define bfd_reloc_ep_not_found bfd_reloc_continue -#define bfd_reloc_ctbp_not_found (bfd_reloc_dangerous + 1) - -/* Perform a relocation as part of a final link. */ - -static bfd_reloc_status_type -v850_elf_final_link_relocate (reloc_howto_type *howto, - bfd *input_bfd, - bfd *output_bfd ATTRIBUTE_UNUSED, - asection *input_section, - bfd_byte *contents, - bfd_vma offset, - bfd_vma value, - bfd_vma addend, - struct bfd_link_info *info, - asection *sym_sec, - int is_local ATTRIBUTE_UNUSED) -{ - unsigned int r_type = howto->type; - bfd_byte *hit_data = contents + offset; - - /* Adjust the value according to the relocation. */ - switch (r_type) - { - case R_V850_9_PCREL: - value -= (input_section->output_section->vma - + input_section->output_offset); - value -= offset; - break; - - case R_V850_22_PCREL: - value -= (input_section->output_section->vma - + input_section->output_offset - + offset); - - /* If the sign extension will corrupt the value then we have overflowed. */ - if (((value & 0xff000000) != 0x0) && ((value & 0xff000000) != 0xff000000)) - return bfd_reloc_overflow; - - /* Only the bottom 24 bits of the PC are valid. */ - value = SEXT24 (value); - break; - - case R_V850_REL32: - value -= (input_section->output_section->vma - + input_section->output_offset - + offset); - break; - - case R_V850_HI16_S: - case R_V850_HI16: - case R_V850_LO16: - case R_V850_LO16_SPLIT_OFFSET: - case R_V850_16: - case R_V850_ABS32: - case R_V850_8: - break; - - case R_V850_ZDA_15_16_OFFSET: - case R_V850_ZDA_16_16_OFFSET: - case R_V850_ZDA_16_16_SPLIT_OFFSET: - if (sym_sec == NULL) - return bfd_reloc_undefined; - - value -= sym_sec->output_section->vma; - break; - - case R_V850_SDA_15_16_OFFSET: - case R_V850_SDA_16_16_OFFSET: - case R_V850_SDA_16_16_SPLIT_OFFSET: - { - unsigned long gp; - struct bfd_link_hash_entry * h; - - if (sym_sec == NULL) - return bfd_reloc_undefined; - - /* Get the value of __gp. */ - h = bfd_link_hash_lookup (info->hash, "__gp", FALSE, FALSE, TRUE); - if (h == NULL - || h->type != bfd_link_hash_defined) - return bfd_reloc_gp_not_found; - - gp = (h->u.def.value - + h->u.def.section->output_section->vma - + h->u.def.section->output_offset); - - value -= sym_sec->output_section->vma; - value -= (gp - sym_sec->output_section->vma); - } - break; - - case R_V850_TDA_4_4_OFFSET: - case R_V850_TDA_4_5_OFFSET: - case R_V850_TDA_16_16_OFFSET: - case R_V850_TDA_7_7_OFFSET: - case R_V850_TDA_7_8_OFFSET: - case R_V850_TDA_6_8_OFFSET: - { - unsigned long ep; - struct bfd_link_hash_entry * h; - - /* Get the value of __ep. */ - h = bfd_link_hash_lookup (info->hash, "__ep", FALSE, FALSE, TRUE); - if (h == NULL - || h->type != bfd_link_hash_defined) - return bfd_reloc_ep_not_found; - - ep = (h->u.def.value - + h->u.def.section->output_section->vma - + h->u.def.section->output_offset); - - value -= ep; - } - break; - - case R_V850_CALLT_6_7_OFFSET: - { - unsigned long ctbp; - struct bfd_link_hash_entry * h; - - /* Get the value of __ctbp. */ - h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE); - if (h == NULL - || h->type != bfd_link_hash_defined) - return bfd_reloc_ctbp_not_found; - - ctbp = (h->u.def.value - + h->u.def.section->output_section->vma - + h->u.def.section->output_offset); - value -= ctbp; - } - break; - - case R_V850_CALLT_16_16_OFFSET: - { - unsigned long ctbp; - struct bfd_link_hash_entry * h; - - if (sym_sec == NULL) - return bfd_reloc_undefined; - - /* Get the value of __ctbp. */ - h = bfd_link_hash_lookup (info->hash, "__ctbp", FALSE, FALSE, TRUE); - if (h == NULL - || h->type != bfd_link_hash_defined) - return bfd_reloc_ctbp_not_found; - - ctbp = (h->u.def.value - + h->u.def.section->output_section->vma - + h->u.def.section->output_offset); - - value -= sym_sec->output_section->vma; - value -= (ctbp - sym_sec->output_section->vma); - } - break; - - case R_V850_NONE: - case R_V850_GNU_VTINHERIT: - case R_V850_GNU_VTENTRY: - case R_V850_LONGCALL: - case R_V850_LONGJUMP: - case R_V850_ALIGN: - return bfd_reloc_ok; - - default: - return bfd_reloc_notsupported; - } - - /* Perform the relocation. */ - return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data); -} - -/* Relocate an V850 ELF section. */ - -static bfd_boolean -v850_elf_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; - Elf_Internal_Rela *relend; - - if (info->relocatable) - return TRUE; - - symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (input_bfd); - - /* Reset the list of remembered HI16S relocs to empty. */ - free_hi16s = previous_hi16s; - previous_hi16s = NULL; - hi16s_counter = 0; - - 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); - - if (r_type == R_V850_GNU_VTENTRY - || r_type == R_V850_GNU_VTINHERIT) - continue; - - /* This is a final link. */ - howto = v850_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; - - /* Note - this check is delayed until now as it is possible and - valid to have a file without any symbols but with relocs that - can be processed. */ - if (sym_hashes == NULL) - { - info->callbacks->warning - (info, "no hash table available", - NULL, input_bfd, input_section, (bfd_vma) 0); - - return FALSE; - } - - RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, - r_symndx, symtab_hdr, sym_hashes, - h, sec, relocation, - unresolved_reloc, warned); - } - - /* FIXME: We should use the addend, but the COFF relocations don't. */ - r = v850_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 = NULL; - - 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 (input_bfd, sec); - } - - switch (r) - { - case 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; - break; - - case bfd_reloc_undefined: - if (! ((*info->callbacks->undefined_symbol) - (info, name, input_bfd, input_section, - rel->r_offset, TRUE))) - return FALSE; - 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 relocation"); - goto common_error; - - case bfd_reloc_gp_not_found: - msg = _("could not locate special linker symbol __gp"); - goto common_error; - - case bfd_reloc_ep_not_found: - msg = _("could not locate special linker symbol __ep"); - goto common_error; - - case bfd_reloc_ctbp_not_found: - msg = _("could not locate special linker symbol __ctbp"); - goto common_error; - - default: - msg = _("internal error: unknown error"); - /* fall through */ - - common_error: - if (!((*info->callbacks->warning) - (info, msg, name, input_bfd, input_section, - rel->r_offset))) - return FALSE; - break; - } - } - } - - return TRUE; -} - -static bfd_boolean -v850_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, - struct bfd_link_info *info ATTRIBUTE_UNUSED, - asection *sec ATTRIBUTE_UNUSED, - const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) -{ - /* No got and plt entries for v850-elf. */ - return TRUE; -} - -static asection * -v850_elf_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_V850_GNU_VTINHERIT: - case R_V850_GNU_VTENTRY: - break; - - default: - switch (h->root.type) - { - 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; - - default: - break; - } - } - } - else - return bfd_section_from_elf_index (sec->owner, sym->st_shndx); - - return NULL; -} - -/* Set the right machine number. */ - -static bfd_boolean -v850_elf_object_p (bfd *abfd) -{ - switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH) - { - default: - case E_V850_ARCH: - bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850); - break; - case E_V850E_ARCH: - bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e); - break; - case E_V850E1_ARCH: - bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e1); - break; - } - return TRUE; -} - -/* Store the machine number in the flags field. */ - -static void -v850_elf_final_write_processing (bfd *abfd, - bfd_boolean linker ATTRIBUTE_UNUSED) -{ - unsigned long val; - - switch (bfd_get_mach (abfd)) - { - default: - case bfd_mach_v850: val = E_V850_ARCH; break; - case bfd_mach_v850e: val = E_V850E_ARCH; break; - case bfd_mach_v850e1: val = E_V850E1_ARCH; break; - } - - elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH; - elf_elfheader (abfd)->e_flags |= val; -} - -/* Function to keep V850 specific file flags. */ - -static bfd_boolean -v850_elf_set_private_flags (bfd *abfd, flagword flags) -{ - BFD_ASSERT (!elf_flags_init (abfd) - || elf_elfheader (abfd)->e_flags == flags); - - elf_elfheader (abfd)->e_flags = flags; - elf_flags_init (abfd) = TRUE; - return TRUE; -} - -/* Merge backend specific data from an object file - to the output object file when linking. */ - -static bfd_boolean -v850_elf_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)) - { - /* If the input is the default architecture then do not - bother setting the flags for the output architecture, - instead allow future merges to do this. If no future - merges ever set these flags then they will retain their - unitialised values, which surprise surprise, correspond - to the default values. */ - if (bfd_get_arch_info (ibfd)->the_default) - return TRUE; - - elf_flags_init (obfd) = TRUE; - elf_elfheader (obfd)->e_flags = in_flags; - - if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) - && bfd_get_arch_info (obfd)->the_default) - return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd)); - - return TRUE; - } - - /* Check flag compatibility. */ - if (in_flags == out_flags) - return TRUE; - - if ((in_flags & EF_V850_ARCH) != (out_flags & EF_V850_ARCH) - && (in_flags & EF_V850_ARCH) != E_V850_ARCH) - { - /* Allow v850e1 binaries to be linked with v850e binaries. - Set the output binary to v850e. */ - if ((in_flags & EF_V850_ARCH) == E_V850E1_ARCH - && (out_flags & EF_V850_ARCH) == E_V850E_ARCH) - return TRUE; - - if ((in_flags & EF_V850_ARCH) == E_V850E_ARCH - && (out_flags & EF_V850_ARCH) == E_V850E1_ARCH) - { - elf_elfheader (obfd)->e_flags = - ((out_flags & ~ EF_V850_ARCH) | E_V850E_ARCH); - return TRUE; - } - - _bfd_error_handler (_("%B: Architecture mismatch with previous modules"), - ibfd); - } - - return TRUE; -} - -/* Display the flags field. */ - -static bfd_boolean -v850_elf_print_private_bfd_data (bfd *abfd, void * ptr) -{ - FILE * file = (FILE *) ptr; - - BFD_ASSERT (abfd != NULL && ptr != NULL); - - _bfd_elf_print_private_bfd_data (abfd, ptr); - - /* xgettext:c-format */ - fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags); - - switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH) - { - default: - case E_V850_ARCH: fprintf (file, _("v850 architecture")); break; - case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break; - case E_V850E1_ARCH: fprintf (file, _("v850e1 architecture")); break; - } - - fputc ('\n', file); - - return TRUE; -} - -/* V850 ELF uses four common sections. One is the usual one, and the - others are for (small) objects in one of the special data areas: - small, tiny and zero. All the objects are kept together, and then - referenced via the gp register, the ep register or the r0 register - respectively, which yields smaller, faster assembler code. This - approach is copied from elf32-mips.c. */ - -static asection v850_elf_scom_section; -static asymbol v850_elf_scom_symbol; -static asymbol * v850_elf_scom_symbol_ptr; -static asection v850_elf_tcom_section; -static asymbol v850_elf_tcom_symbol; -static asymbol * v850_elf_tcom_symbol_ptr; -static asection v850_elf_zcom_section; -static asymbol v850_elf_zcom_symbol; -static asymbol * v850_elf_zcom_symbol_ptr; - -/* Given a BFD section, try to locate the - corresponding ELF section index. */ - -static bfd_boolean -v850_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, - asection *sec, - int *retval) -{ - if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) - *retval = SHN_V850_SCOMMON; - else if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0) - *retval = SHN_V850_TCOMMON; - else if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0) - *retval = SHN_V850_ZCOMMON; - else - return FALSE; - - return TRUE; -} - -/* Handle the special V850 section numbers that a symbol may use. */ - -static void -v850_elf_symbol_processing (bfd *abfd, asymbol *asym) -{ - elf_symbol_type * elfsym = (elf_symbol_type *) asym; - unsigned int indx; - - indx = elfsym->internal_elf_sym.st_shndx; - - /* If the section index is an "ordinary" index, then it may - refer to a v850 specific section created by the assembler. - Check the section's type and change the index it matches. - - FIXME: Should we alter the st_shndx field as well ? */ - - if (indx < elf_numsections (abfd)) - switch (elf_elfsections(abfd)[indx]->sh_type) - { - case SHT_V850_SCOMMON: - indx = SHN_V850_SCOMMON; - break; - - case SHT_V850_TCOMMON: - indx = SHN_V850_TCOMMON; - break; - - case SHT_V850_ZCOMMON: - indx = SHN_V850_ZCOMMON; - break; - - default: - break; - } - - switch (indx) - { - case SHN_V850_SCOMMON: - if (v850_elf_scom_section.name == NULL) - { - /* Initialize the small common section. */ - v850_elf_scom_section.name = ".scommon"; - v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA; - v850_elf_scom_section.output_section = & v850_elf_scom_section; - v850_elf_scom_section.symbol = & v850_elf_scom_symbol; - v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr; - v850_elf_scom_symbol.name = ".scommon"; - v850_elf_scom_symbol.flags = BSF_SECTION_SYM; - v850_elf_scom_symbol.section = & v850_elf_scom_section; - v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol; - } - asym->section = & v850_elf_scom_section; - asym->value = elfsym->internal_elf_sym.st_size; - break; - - case SHN_V850_TCOMMON: - if (v850_elf_tcom_section.name == NULL) - { - /* Initialize the tcommon section. */ - v850_elf_tcom_section.name = ".tcommon"; - v850_elf_tcom_section.flags = SEC_IS_COMMON; - v850_elf_tcom_section.output_section = & v850_elf_tcom_section; - v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol; - v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr; - v850_elf_tcom_symbol.name = ".tcommon"; - v850_elf_tcom_symbol.flags = BSF_SECTION_SYM; - v850_elf_tcom_symbol.section = & v850_elf_tcom_section; - v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol; - } - asym->section = & v850_elf_tcom_section; - asym->value = elfsym->internal_elf_sym.st_size; - break; - - case SHN_V850_ZCOMMON: - if (v850_elf_zcom_section.name == NULL) - { - /* Initialize the zcommon section. */ - v850_elf_zcom_section.name = ".zcommon"; - v850_elf_zcom_section.flags = SEC_IS_COMMON; - v850_elf_zcom_section.output_section = & v850_elf_zcom_section; - v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol; - v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr; - v850_elf_zcom_symbol.name = ".zcommon"; - v850_elf_zcom_symbol.flags = BSF_SECTION_SYM; - v850_elf_zcom_symbol.section = & v850_elf_zcom_section; - v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol; - } - asym->section = & v850_elf_zcom_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 v850 section numbers here. */ - -static bfd_boolean -v850_elf_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; - - /* If the section index is an "ordinary" index, then it may - refer to a v850 specific section created by the assembler. - Check the section's type and change the index it matches. - - FIXME: Should we alter the st_shndx field as well ? */ - - if (indx < elf_numsections (abfd)) - switch (elf_elfsections(abfd)[indx]->sh_type) - { - case SHT_V850_SCOMMON: - indx = SHN_V850_SCOMMON; - break; - - case SHT_V850_TCOMMON: - indx = SHN_V850_TCOMMON; - break; - - case SHT_V850_ZCOMMON: - indx = SHN_V850_ZCOMMON; - break; - - default: - break; - } - - switch (indx) - { - case SHN_V850_SCOMMON: - *secp = bfd_make_section_old_way (abfd, ".scommon"); - (*secp)->flags |= SEC_IS_COMMON; - *valp = sym->st_size; - break; - - case SHN_V850_TCOMMON: - *secp = bfd_make_section_old_way (abfd, ".tcommon"); - (*secp)->flags |= SEC_IS_COMMON; - *valp = sym->st_size; - break; - - case SHN_V850_ZCOMMON: - *secp = bfd_make_section_old_way (abfd, ".zcommon"); - (*secp)->flags |= SEC_IS_COMMON; - *valp = sym->st_size; - break; - } - - return TRUE; -} - -static bfd_boolean -v850_elf_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, ".scommon") == 0) - sym->st_shndx = SHN_V850_SCOMMON; - else if (strcmp (input_sec->name, ".tcommon") == 0) - sym->st_shndx = SHN_V850_TCOMMON; - else if (strcmp (input_sec->name, ".zcommon") == 0) - sym->st_shndx = SHN_V850_ZCOMMON; - } - - return TRUE; -} - -static bfd_boolean -v850_elf_section_from_shdr (bfd *abfd, - Elf_Internal_Shdr *hdr, - const char *name, - int shindex) -{ - /* There ought to be a place to keep ELF backend specific flags, but - at the moment there isn't one. We just keep track of the - sections by their name, instead. */ - - if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) - return FALSE; - - switch (hdr->sh_type) - { - case SHT_V850_SCOMMON: - case SHT_V850_TCOMMON: - case SHT_V850_ZCOMMON: - if (! bfd_set_section_flags (abfd, hdr->bfd_section, - (bfd_get_section_flags (abfd, - hdr->bfd_section) - | SEC_IS_COMMON))) - return FALSE; - } - - return TRUE; -} - -/* Set the correct type for a V850 ELF section. We do this - by the section name, which is a hack, but ought to work. */ - -static bfd_boolean -v850_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, - Elf_Internal_Shdr *hdr, - asection *sec) -{ - const char * name; - - name = bfd_get_section_name (abfd, sec); - - if (strcmp (name, ".scommon") == 0) - hdr->sh_type = SHT_V850_SCOMMON; - else if (strcmp (name, ".tcommon") == 0) - hdr->sh_type = SHT_V850_TCOMMON; - else if (strcmp (name, ".zcommon") == 0) - hdr->sh_type = SHT_V850_ZCOMMON; - - return TRUE; -} - -/* Delete some bytes from a section while relaxing. */ - -static bfd_boolean -v850_elf_relax_delete_bytes (bfd *abfd, - asection *sec, - bfd_vma addr, - bfd_vma toaddr, - int count) -{ - Elf_Internal_Shdr *symtab_hdr; - Elf32_External_Sym *extsyms; - Elf32_External_Sym *esym; - Elf32_External_Sym *esymend; - int index; - unsigned int sec_shndx; - bfd_byte *contents; - Elf_Internal_Rela *irel; - Elf_Internal_Rela *irelend; - struct elf_link_hash_entry *sym_hash; - Elf_Internal_Shdr *shndx_hdr; - Elf_External_Sym_Shndx *shndx; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - extsyms = (Elf32_External_Sym *) symtab_hdr->contents; - - sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); - - contents = elf_section_data (sec)->this_hdr.contents; - - /* The deletion must stop at the next ALIGN reloc for an alignment - power larger than the number of bytes we are deleting. */ - - /* Actually delete the bytes. */ -#if (DEBUG_RELAX & 2) - fprintf (stderr, "relax_delete: contents: sec: %s %p .. %p %x\n", - sec->name, addr, toaddr, count ); -#endif - memmove (contents + addr, contents + addr + count, - toaddr - addr - count); - memset (contents + toaddr-count, 0, count); - - /* Adjust all the relocs. */ - irel = elf_section_data (sec)->relocs; - irelend = irel + sec->reloc_count; - shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; - shndx = (Elf_External_Sym_Shndx *) shndx_hdr->contents; - - for (; irel < irelend; irel++) - { - bfd_vma raddr, paddr, symval; - Elf_Internal_Sym isym; - - /* Get the new reloc address. */ - raddr = irel->r_offset; - if ((raddr >= (addr + count) && raddr < toaddr)) - irel->r_offset -= count; - - if (raddr >= addr && raddr < addr + count) - { - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - (int) R_V850_NONE); - continue; - } - - if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN) - continue; - - bfd_elf32_swap_symbol_in (abfd, - extsyms + ELF32_R_SYM (irel->r_info), - shndx ? shndx + ELF32_R_SYM (irel->r_info) : NULL, - & isym); - - if (isym.st_shndx != sec_shndx) - continue; - - /* Get the value of the symbol referred to by the reloc. */ - if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) - { - symval = isym.st_value; -#if (DEBUG_RELAX & 2) - { - char * name = bfd_elf_string_from_elf_section - (abfd, symtab_hdr->sh_link, isym.st_name); - fprintf (stderr, - "relax_delete: local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n", - sec->name, name, isym.st_name, - sec->output_section->vma, sec->output_offset, - isym.st_value, irel->r_addend); - } -#endif - } - 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); - - symval = h->root.u.def.value; -#if (DEBUG_RELAX & 2) - fprintf (stderr, - "relax_delete: defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n", - sec->name, h->root.root.string, h->root.u.def.value, - sec->output_section->vma, sec->output_offset, irel->r_addend); -#endif - } - - paddr = symval + irel->r_addend; - - if ( (symval >= addr + count && symval < toaddr) - && (paddr < addr + count || paddr >= toaddr)) - irel->r_addend += count; - else if ( (symval < addr + count || symval >= toaddr) - && (paddr >= addr + count && paddr < toaddr)) - irel->r_addend -= count; - } - - /* Adjust the local symbols defined in this section. */ - esym = extsyms; - esymend = esym + symtab_hdr->sh_info; - - for (; esym < esymend; esym++, shndx = (shndx ? shndx + 1 : NULL)) - { - Elf_Internal_Sym isym; - - bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym); - - if (isym.st_shndx == sec_shndx - && isym.st_value >= addr + count - && isym.st_value < toaddr) - { - isym.st_value -= count; - - if (isym.st_value + isym.st_size >= toaddr) - isym.st_size += count; - - bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx); - } - else if (isym.st_shndx == sec_shndx - && isym.st_value < addr + count) - { - if (isym.st_value+isym.st_size >= addr + count - && isym.st_value+isym.st_size < toaddr) - isym.st_size -= count; - - if (isym.st_value >= addr - && isym.st_value < addr + count) - isym.st_value = addr; - - bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx); - } - } - - /* Now adjust the global symbols defined in this section. */ - esym = extsyms + symtab_hdr->sh_info; - esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)); - - for (index = 0; esym < esymend; esym ++, index ++) - { - Elf_Internal_Sym isym; - - bfd_elf32_swap_symbol_in (abfd, esym, shndx, & isym); - sym_hash = elf_sym_hashes (abfd) [index]; - - if (isym.st_shndx == sec_shndx - && ((sym_hash)->root.type == bfd_link_hash_defined - || (sym_hash)->root.type == bfd_link_hash_defweak) - && (sym_hash)->root.u.def.section == sec - && (sym_hash)->root.u.def.value >= addr + count - && (sym_hash)->root.u.def.value < toaddr) - { - if ((sym_hash)->root.u.def.value + isym.st_size >= toaddr) - { - isym.st_size += count; - bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx); - } - - (sym_hash)->root.u.def.value -= count; - } - else if (isym.st_shndx == sec_shndx - && ((sym_hash)->root.type == bfd_link_hash_defined - || (sym_hash)->root.type == bfd_link_hash_defweak) - && (sym_hash)->root.u.def.section == sec - && (sym_hash)->root.u.def.value < addr + count) - { - if ((sym_hash)->root.u.def.value+isym.st_size >= addr + count - && (sym_hash)->root.u.def.value+isym.st_size < toaddr) - isym.st_size -= count; - - if ((sym_hash)->root.u.def.value >= addr - && (sym_hash)->root.u.def.value < addr + count) - (sym_hash)->root.u.def.value = addr; - - bfd_elf32_swap_symbol_out (abfd, & isym, esym, shndx); - } - - if (shndx) - ++ shndx; - } - - return TRUE; -} - -#define NOP_OPCODE (0x0000) -#define MOVHI 0x0640 /* 4byte */ -#define MOVHI_MASK 0x07e0 -#define MOVHI_R1(insn) ((insn) & 0x1f) /* 4byte */ -#define MOVHI_R2(insn) ((insn) >> 11) -#define MOVEA 0x0620 /* 2byte */ -#define MOVEA_MASK 0x07e0 -#define MOVEA_R1(insn) ((insn) & 0x1f) -#define MOVEA_R2(insn) ((insn) >> 11) -#define JARL_4 0x00040780 /* 4byte */ -#define JARL_4_MASK 0xFFFF07FF -#define JARL_R2(insn) (int)(((insn) & (~JARL_4_MASK)) >> 11) -#define ADD_I 0x0240 /* 2byte */ -#define ADD_I_MASK 0x07e0 -#define ADD_I5(insn) ((((insn) & 0x001f) << 11) >> 11) /* 2byte */ -#define ADD_R2(insn) ((insn) >> 11) -#define JMP_R 0x0060 /* 2byte */ -#define JMP_R_MASK 0xFFE0 -#define JMP_R1(insn) ((insn) & 0x1f) - -static bfd_boolean -v850_elf_relax_section (bfd *abfd, - asection *sec, - struct bfd_link_info *link_info, - bfd_boolean *again) -{ - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Rela *internal_relocs; - Elf_Internal_Rela *irel; - Elf_Internal_Rela *irelend; - Elf_Internal_Rela *irelalign = NULL; - Elf_Internal_Sym *isymbuf = NULL; - bfd_byte *contents = NULL; - bfd_vma addr = 0; - bfd_vma toaddr; - int align_pad_size = 0; - bfd_boolean result = TRUE; - - *again = FALSE; - - if (link_info->relocatable - || (sec->flags & SEC_RELOC) == 0 - || sec->reloc_count == 0) - return TRUE; - - symtab_hdr = & elf_tdata (abfd)->symtab_hdr; - - internal_relocs = (_bfd_elf_link_read_relocs - (abfd, sec, NULL, NULL, link_info->keep_memory)); - if (internal_relocs == NULL) - goto error_return; - - irelend = internal_relocs + sec->reloc_count; - - while (addr < sec->size) - { - toaddr = sec->size; - - for (irel = internal_relocs; irel < irelend; irel ++) - if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN - && irel->r_offset > addr - && irel->r_offset < toaddr) - toaddr = irel->r_offset; - -#ifdef DEBUG_RELAX - fprintf (stderr, "relax region 0x%x to 0x%x align pad %d\n", - addr, toaddr, align_pad_size); -#endif - if (irelalign) - { - bfd_vma alignto; - bfd_vma alignmoveto; - - alignmoveto = BFD_ALIGN (addr - align_pad_size, 1 << irelalign->r_addend); - alignto = BFD_ALIGN (addr, 1 << irelalign->r_addend); - - if (alignmoveto < alignto) - { - unsigned int i; - - align_pad_size = alignto - alignmoveto; -#ifdef DEBUG_RELAX - fprintf (stderr, "relax move region 0x%x to 0x%x delete size 0x%x\n", - alignmoveto, toaddr, align_pad_size); -#endif - if (!v850_elf_relax_delete_bytes (abfd, sec, alignmoveto, - toaddr, align_pad_size)) - goto error_return; - - for (i = BFD_ALIGN (toaddr - align_pad_size, 1); - (i + 1) < toaddr; i += 2) - bfd_put_16 (abfd, NOP_OPCODE, contents + i); - - addr = alignmoveto; - } - else - align_pad_size = 0; - } - - for (irel = internal_relocs; irel < irelend; irel++) - { - bfd_vma laddr; - bfd_vma addend; - bfd_vma symval; - int insn[5]; - int no_match = -1; - Elf_Internal_Rela *hi_irelfn; - Elf_Internal_Rela *lo_irelfn; - Elf_Internal_Rela *irelcall; - bfd_signed_vma foff; - - if (! (irel->r_offset >= addr && irel->r_offset < toaddr - && (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL - || ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP))) - continue; - -#ifdef DEBUG_RELAX - fprintf (stderr, "relax check r_info 0x%x r_offset 0x%x r_addend 0x%x\n", - irel->r_info, - irel->r_offset, - irel->r_addend ); -#endif - - /* Get the section contents. */ - if (contents == NULL) - { - if (elf_section_data (sec)->this_hdr.contents != NULL) - contents = elf_section_data (sec)->this_hdr.contents; - else - { - if (! bfd_malloc_and_get_section (abfd, sec, &contents)) - goto error_return; - } - } - - /* Read this BFD's local symbols if we haven't done so already. */ - if (isymbuf == NULL && symtab_hdr->sh_info != 0) - { - 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; - } - - laddr = irel->r_offset; - - if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGCALL) - { - /* Check code for -mlong-calls output. */ - if (laddr + 16 <= (bfd_vma) sec->size) - { - insn[0] = bfd_get_16 (abfd, contents + laddr); - insn[1] = bfd_get_16 (abfd, contents + laddr + 4); - insn[2] = bfd_get_32 (abfd, contents + laddr + 8); - insn[3] = bfd_get_16 (abfd, contents + laddr + 12); - insn[4] = bfd_get_16 (abfd, contents + laddr + 14); - - if ((insn[0] & MOVHI_MASK) != MOVHI - || MOVHI_R1 (insn[0]) != 0) - no_match = 0; - - if (no_match < 0 - && ((insn[1] & MOVEA_MASK) != MOVEA - || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1]))) - no_match = 1; - - if (no_match < 0 - && (insn[2] & JARL_4_MASK) != JARL_4) - no_match = 2; - - if (no_match < 0 - && ((insn[3] & ADD_I_MASK) != ADD_I - || ADD_I5 (insn[3]) != 4 - || JARL_R2 (insn[2]) != ADD_R2 (insn[3]))) - no_match = 3; - - if (no_match < 0 - && ((insn[4] & JMP_R_MASK) != JMP_R - || MOVEA_R2 (insn[1]) != JMP_R1 (insn[4]))) - no_match = 4; - } - else - { - ((*_bfd_error_handler) - ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insns", - bfd_get_filename (abfd), (unsigned long) irel->r_offset)); - - continue; - } - - if (no_match >= 0) - { - ((*_bfd_error_handler) - ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized insn 0x%x", - bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match])); - - continue; - } - - /* Get the reloc for the address from which the register is - being loaded. This reloc will tell us which function is - actually being called. */ - for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++) - if (hi_irelfn->r_offset == laddr + 2 - && ELF32_R_TYPE (hi_irelfn->r_info) - == (int) R_V850_HI16_S) - break; - - for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++) - if (lo_irelfn->r_offset == laddr + 6 - && ELF32_R_TYPE (lo_irelfn->r_info) - == (int) R_V850_LO16) - break; - - for (irelcall = internal_relocs; irelcall < irelend; irelcall ++) - if (irelcall->r_offset == laddr + 8 - && ELF32_R_TYPE (irelcall->r_info) - == (int) R_V850_22_PCREL) - break; - - if ( hi_irelfn == irelend - || lo_irelfn == irelend - || irelcall == irelend) - { - ((*_bfd_error_handler) - ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc", - bfd_get_filename (abfd), (unsigned long) irel->r_offset )); - - continue; - } - - if (ELF32_R_SYM (irelcall->r_info) < symtab_hdr->sh_info) - { - Elf_Internal_Sym * isym; - - /* A local symbol. */ - isym = isymbuf + ELF32_R_SYM (irelcall->r_info); - - symval = isym->st_value; - } - else - { - unsigned long indx; - struct elf_link_hash_entry * h; - - /* An external symbol. */ - indx = ELF32_R_SYM (irelcall->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) - /* This appears to be a reference to an undefined - symbol. Just ignore it--it will be caught by the - regular reloc processing. */ - continue; - - symval = h->root.u.def.value; - } - - if (symval + irelcall->r_addend != irelcall->r_offset + 4) - { - ((*_bfd_error_handler) - ("%s: 0x%lx: warning: R_V850_LONGCALL points to unrecognized reloc 0x%lx", - bfd_get_filename (abfd), (unsigned long) irel->r_offset, irelcall->r_offset )); - - continue; - } - - /* Get the value of the symbol referred to by the reloc. */ - if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info) - { - Elf_Internal_Sym *isym; - asection *sym_sec; - - /* A local symbol. */ - isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info); - - if (isym->st_shndx == SHN_UNDEF) - sym_sec = bfd_und_section_ptr; - else if (isym->st_shndx == SHN_ABS) - sym_sec = bfd_abs_section_ptr; - else if (isym->st_shndx == SHN_COMMON) - sym_sec = bfd_com_section_ptr; - else - sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); - symval = (isym->st_value - + sym_sec->output_section->vma - + sym_sec->output_offset); - } - else - { - unsigned long indx; - struct elf_link_hash_entry *h; - - /* An external symbol. */ - indx = ELF32_R_SYM (hi_irelfn->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) - /* This appears to be a reference to an undefined - symbol. Just ignore it--it will be caught by the - regular reloc processing. */ - continue; - - symval = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - } - - addend = irel->r_addend; - - foff = (symval + addend - - (irel->r_offset - + sec->output_section->vma - + sec->output_offset - + 4)); -#ifdef DEBUG_RELAX - fprintf (stderr, "relax longcall r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n", - irel->r_offset, - (irel->r_offset - + sec->output_section->vma - + sec->output_offset), - symval, addend, foff); -#endif - - if (foff < -0x100000 || foff >= 0x100000) - /* After all that work, we can't shorten this function call. */ - continue; - - /* For simplicity of coding, we are going to modify the section - contents, the section relocs, and the BFD symbol table. We - must tell the rest of the code not to free up this - information. It would be possible to instead create a table - of changes which have to be made, as is done in coff-mips.c; - that would be more work, but would require less memory when - the linker is run. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (bfd_byte *) isymbuf; - - /* Replace the long call with a jarl. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_22_PCREL); - - addend = 0; - - if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info) - /* If this needs to be changed because of future relaxing, - it will be handled here like other internal IND12W - relocs. */ - bfd_put_32 (abfd, - 0x00000780 | (JARL_R2 (insn[2])<<11) | ((addend << 16) & 0xffff) | ((addend >> 16) & 0xf), - contents + irel->r_offset); - else - /* We can't fully resolve this yet, because the external - symbol value may be changed by future relaxing. - We let the final link phase handle it. */ - bfd_put_32 (abfd, 0x00000780 | (JARL_R2 (insn[2])<<11), - contents + irel->r_offset); - - hi_irelfn->r_info = - ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE); - lo_irelfn->r_info = - ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE); - irelcall->r_info = - ELF32_R_INFO (ELF32_R_SYM (irelcall->r_info), R_V850_NONE); - - if (! v850_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 4, toaddr, 12)) - goto error_return; - - align_pad_size += 12; - } - else if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_LONGJUMP) - { - /* Check code for -mlong-jumps output. */ - if (laddr + 10 <= (bfd_vma) sec->size) - { - insn[0] = bfd_get_16 (abfd, contents + laddr); - insn[1] = bfd_get_16 (abfd, contents + laddr + 4); - insn[2] = bfd_get_16 (abfd, contents + laddr + 8); - - if ((insn[0] & MOVHI_MASK) != MOVHI - || MOVHI_R1 (insn[0]) != 0) - no_match = 0; - - if (no_match < 0 - && ((insn[1] & MOVEA_MASK) != MOVEA - || MOVHI_R2 (insn[0]) != MOVEA_R1 (insn[1]))) - no_match = 1; - - if (no_match < 0 - && ((insn[2] & JMP_R_MASK) != JMP_R - || MOVEA_R2 (insn[1]) != JMP_R1 (insn[2]))) - no_match = 4; - } - else - { - ((*_bfd_error_handler) - ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insns", - bfd_get_filename (abfd), (unsigned long) irel->r_offset)); - - continue; - } - - if (no_match >= 0) - { - ((*_bfd_error_handler) - ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized insn 0x%x", - bfd_get_filename (abfd), (unsigned long) irel->r_offset+no_match, insn[no_match])); - - continue; - } - - /* Get the reloc for the address from which the register is - being loaded. This reloc will tell us which function is - actually being called. */ - for (hi_irelfn = internal_relocs; hi_irelfn < irelend; hi_irelfn ++) - if (hi_irelfn->r_offset == laddr + 2 - && ELF32_R_TYPE (hi_irelfn->r_info) == (int) R_V850_HI16_S) - break; - - for (lo_irelfn = internal_relocs; lo_irelfn < irelend; lo_irelfn ++) - if (lo_irelfn->r_offset == laddr + 6 - && ELF32_R_TYPE (lo_irelfn->r_info) == (int) R_V850_LO16) - break; - - if ( hi_irelfn == irelend - || lo_irelfn == irelend) - { - ((*_bfd_error_handler) - ("%s: 0x%lx: warning: R_V850_LONGJUMP points to unrecognized reloc", - bfd_get_filename (abfd), (unsigned long) irel->r_offset )); - - continue; - } - - /* Get the value of the symbol referred to by the reloc. */ - if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info) - { - Elf_Internal_Sym * isym; - asection * sym_sec; - - /* A local symbol. */ - isym = isymbuf + ELF32_R_SYM (hi_irelfn->r_info); - - if (isym->st_shndx == SHN_UNDEF) - sym_sec = bfd_und_section_ptr; - else if (isym->st_shndx == SHN_ABS) - sym_sec = bfd_abs_section_ptr; - else if (isym->st_shndx == SHN_COMMON) - sym_sec = bfd_com_section_ptr; - else - sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); - symval = (isym->st_value - + sym_sec->output_section->vma - + sym_sec->output_offset); -#ifdef DEBUG_RELAX - { - char * name = bfd_elf_string_from_elf_section - (abfd, symtab_hdr->sh_link, isym->st_name); - - fprintf (stderr, "relax long jump local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n", - sym_sec->name, name, isym->st_name, - sym_sec->output_section->vma, - sym_sec->output_offset, - isym->st_value, irel->r_addend); - } -#endif - } - 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) - /* This appears to be a reference to an undefined - symbol. Just ignore it--it will be caught by the - regular reloc processing. */ - continue; - - symval = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); -#ifdef DEBUG_RELAX - fprintf (stderr, - "relax longjump defined: sec: %s, name: %s, value: %x + %x + %x addend %x\n", - sec->name, h->root.root.string, h->root.u.def.value, - sec->output_section->vma, sec->output_offset, irel->r_addend); -#endif - } - - addend = irel->r_addend; - - foff = (symval + addend - - (irel->r_offset - + sec->output_section->vma - + sec->output_offset - + 4)); -#ifdef DEBUG_RELAX - fprintf (stderr, "relax longjump r_offset 0x%x ptr 0x%x symbol 0x%x addend 0x%x distance 0x%x\n", - irel->r_offset, - (irel->r_offset - + sec->output_section->vma - + sec->output_offset), - symval, addend, foff); -#endif - if (foff < -0x100000 || foff >= 0x100000) - /* After all that work, we can't shorten this function call. */ - continue; - - /* For simplicity of coding, we are going to modify the section - contents, the section relocs, and the BFD symbol table. We - must tell the rest of the code not to free up this - information. It would be possible to instead create a table - of changes which have to be made, as is done in coff-mips.c; - that would be more work, but would require less memory when - the linker is run. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (bfd_byte *) isymbuf; - - if (foff < -0x100 || foff >= 0x100) - { - /* Replace the long jump with a jr. */ - - irel->r_info = - ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_22_PCREL); - - irel->r_addend = addend; - addend = 0; - - if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info) - /* If this needs to be changed because of future relaxing, - it will be handled here like other internal IND12W - relocs. */ - bfd_put_32 (abfd, - 0x00000780 | ((addend << 15) & 0xffff0000) | ((addend >> 17) & 0xf), - contents + irel->r_offset); - else - /* We can't fully resolve this yet, because the external - symbol value may be changed by future relaxing. - We let the final link phase handle it. */ - bfd_put_32 (abfd, 0x00000780, contents + irel->r_offset); - - hi_irelfn->r_info = - ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE); - lo_irelfn->r_info = - ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE); - if (!v850_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 4, toaddr, 6)) - goto error_return; - - align_pad_size += 6; - } - else - { - /* Replace the long jump with a br. */ - - irel->r_info = - ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_V850_9_PCREL); - - irel->r_addend = addend; - addend = 0; - - if (ELF32_R_SYM (hi_irelfn->r_info) < symtab_hdr->sh_info) - /* If this needs to be changed because of future relaxing, - it will be handled here like other internal IND12W - relocs. */ - bfd_put_16 (abfd, - 0x0585 | ((addend << 10) & 0xf800) | ((addend << 3) & 0x0070), - contents + irel->r_offset); - else - /* We can't fully resolve this yet, because the external - symbol value may be changed by future relaxing. - We let the final link phase handle it. */ - bfd_put_16 (abfd, 0x0585, contents + irel->r_offset); - - hi_irelfn->r_info = - ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_V850_NONE); - lo_irelfn->r_info = - ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_V850_NONE); - if (!v850_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 2, toaddr, 8)) - goto error_return; - - align_pad_size += 8; - } - } - } - - irelalign = NULL; - for (irel = internal_relocs; irel < irelend; irel++) - { - if (ELF32_R_TYPE (irel->r_info) == (int) R_V850_ALIGN - && irel->r_offset == toaddr) - { - irel->r_offset -= align_pad_size; - - if (irelalign == NULL || irelalign->r_addend > irel->r_addend) - irelalign = irel; - } - } - - addr = toaddr; - } - - if (!irelalign) - { -#ifdef DEBUG_RELAX - fprintf (stderr, "relax pad %d shorten %d -> %d\n", - align_pad_size, - sec->size, - sec->size - align_pad_size); -#endif - sec->size -= align_pad_size; - } - - finish: - if (internal_relocs != NULL - && elf_section_data (sec)->relocs != internal_relocs) - free (internal_relocs); - - if (contents != NULL - && elf_section_data (sec)->this_hdr.contents != (unsigned char *) contents) - free (contents); - - if (isymbuf != NULL - && symtab_hdr->contents != (bfd_byte *) isymbuf) - free (isymbuf); - - return result; - - error_return: - result = FALSE; - goto finish; -} - -static const struct bfd_elf_special_section v850_elf_special_sections[] = -{ - { ".call_table_data", 16, 0, SHT_PROGBITS, (SHF_ALLOC - + SHF_WRITE) }, - { ".call_table_text", 16, 0, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE - + SHF_EXECINSTR) }, - { ".rosdata", 8, -2, SHT_PROGBITS, (SHF_ALLOC - + SHF_V850_GPREL) }, - { ".rozdata", 8, -2, SHT_PROGBITS, (SHF_ALLOC - + SHF_V850_R0REL) }, - { ".sbss", 5, -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE - + SHF_V850_GPREL) }, - { ".scommon", 8, -2, SHT_V850_SCOMMON, (SHF_ALLOC + SHF_WRITE - + SHF_V850_GPREL) }, - { ".sdata", 6, -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE - + SHF_V850_GPREL) }, - { ".tbss", 5, -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE - + SHF_V850_EPREL) }, - { ".tcommon", 8, -2, SHT_V850_TCOMMON, (SHF_ALLOC + SHF_WRITE - + SHF_V850_R0REL) }, - { ".tdata", 6, -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE - + SHF_V850_EPREL) }, - { ".zbss", 5, -2, SHT_NOBITS, (SHF_ALLOC + SHF_WRITE - + SHF_V850_R0REL) }, - { ".zcommon", 8, -2, SHT_V850_ZCOMMON, (SHF_ALLOC + SHF_WRITE - + SHF_V850_R0REL) }, - { ".zdata", 6, -2, SHT_PROGBITS, (SHF_ALLOC + SHF_WRITE - + SHF_V850_R0REL) }, - { NULL, 0, 0, 0, 0 } -}; - -#define TARGET_LITTLE_SYM bfd_elf32_v850_vec -#define TARGET_LITTLE_NAME "elf32-v850" -#define ELF_ARCH bfd_arch_v850 -#define ELF_MACHINE_CODE EM_V850 -#define ELF_MACHINE_ALT1 EM_CYGNUS_V850 -#define ELF_MACHINE_ALT2 EM_V800 /* This is the value used by the GreenHills toolchain. */ -#define ELF_MAXPAGESIZE 0x1000 - -#define elf_info_to_howto v850_elf_info_to_howto_rela -#define elf_info_to_howto_rel v850_elf_info_to_howto_rel - -#define elf_backend_check_relocs v850_elf_check_relocs -#define elf_backend_relocate_section v850_elf_relocate_section -#define elf_backend_object_p v850_elf_object_p -#define elf_backend_final_write_processing v850_elf_final_write_processing -#define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section -#define elf_backend_symbol_processing v850_elf_symbol_processing -#define elf_backend_add_symbol_hook v850_elf_add_symbol_hook -#define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook -#define elf_backend_section_from_shdr v850_elf_section_from_shdr -#define elf_backend_fake_sections v850_elf_fake_sections -#define elf_backend_gc_mark_hook v850_elf_gc_mark_hook -#define elf_backend_gc_sweep_hook v850_elf_gc_sweep_hook -#define elf_backend_special_sections v850_elf_special_sections - -#define elf_backend_can_gc_sections 1 -#define elf_backend_rela_normal 1 - -#define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name -#define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup -#define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data -#define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags -#define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data -#define bfd_elf32_bfd_relax_section v850_elf_relax_section - -#define elf_symbol_leading_char '_' - -#include "elf32-target.h" |