X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bfd%2Felf32-h8300.c;h=7573b824ab78b85f44c1d9c4965723afa41498b3;hb=98b273dc13b1e45db8c66821efc9e514884f3c25;hp=92c0a165b81526203a5f0b911d033f727718d236;hpb=84477db9a380a80437de9a77b5200e84fc759bad;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf32-h8300.c b/bfd/elf32-h8300.c index 92c0a165b8..7573b824ab 100644 --- a/bfd/elf32-h8300.c +++ b/bfd/elf32-h8300.c @@ -1,6 +1,5 @@ /* BFD back-end for Renesas H8/300 ELF binaries. - Copyright 1993, 1995, 1998, 1999, 2001, 2002, 2003, 2004, 2005, 2006, - 2007, 2009 Free Software Foundation, Inc. + Copyright (C) 1993-2017 Free Software Foundation, Inc. This file is part of BFD, the Binary File Descriptor library. @@ -34,7 +33,8 @@ static void elf32_h8_info_to_howto_rel static unsigned long elf32_h8_mach (flagword); static void elf32_h8_final_write_processing (bfd *, bfd_boolean); static bfd_boolean elf32_h8_object_p (bfd *); -static bfd_boolean elf32_h8_merge_private_bfd_data (bfd *, bfd *); +static bfd_boolean elf32_h8_merge_private_bfd_data + (bfd *, struct bfd_link_info *); static bfd_boolean elf32_h8_relax_section (bfd *, asection *, struct bfd_link_info *, bfd_boolean *); static bfd_boolean elf32_h8_relax_delete_bytes @@ -52,16 +52,17 @@ static bfd_boolean elf32_h8_relocate_section bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **); static bfd_reloc_status_type special - (bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **); + (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); /* This does not include any relocation information, but should be good enough for GDB or objdump to read the file. */ -static reloc_howto_type h8_elf_howto_table[] = { +static reloc_howto_type h8_elf_howto_table[] = +{ #define R_H8_NONE_X 0 HOWTO (R_H8_NONE, /* type */ 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ + 3, /* size (0 = byte, 1 = short, 2 = long) */ 0, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ @@ -184,7 +185,21 @@ static reloc_howto_type h8_elf_howto_table[] = { 0, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ -#define R_H8_PCREL16_X (R_H8_DIR32A16_X + 1) +#define R_H8_DISP32A16_X (R_H8_DIR32A16_X + 1) + HOWTO (R_H8_DISP32A16, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_dont,/* complain_on_overflow */ + special, /* special_function */ + "R_H8_DISP32A16", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ +#define R_H8_PCREL16_X (R_H8_DISP32A16_X + 1) HOWTO (R_H8_PCREL16, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ @@ -233,6 +248,7 @@ static const struct elf_reloc_map h8_reloc_map[] = { { BFD_RELOC_H8_DIR24A8, R_H8_DIR24A8_X }, { BFD_RELOC_H8_DIR24R8, R_H8_DIR24R8_X }, { BFD_RELOC_H8_DIR32A16, R_H8_DIR32A16_X }, + { BFD_RELOC_H8_DISP32A16, R_H8_DISP32A16_X }, { BFD_RELOC_16_PCREL, R_H8_PCREL16_X }, { BFD_RELOC_8_PCREL, R_H8_PCREL8_X }, }; @@ -304,7 +320,7 @@ static bfd_reloc_status_type special (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry ATTRIBUTE_UNUSED, asymbol *symbol ATTRIBUTE_UNUSED, - PTR data ATTRIBUTE_UNUSED, + void * data ATTRIBUTE_UNUSED, asection *input_section ATTRIBUTE_UNUSED, bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) @@ -337,6 +353,7 @@ elf32_h8_final_link_relocate (unsigned long r_type, bfd *input_bfd, case R_H8_DIR32: case R_H8_DIR32A16: + case R_H8_DISP32A16: case R_H8_DIR24A8: value += addend; bfd_put_32 (input_bfd, value, hit_data); @@ -452,26 +469,19 @@ elf32_h8_relocate_section (bfd *output_bfd, struct bfd_link_info *info, } else { - bfd_boolean unresolved_reloc, warned; + 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); + unresolved_reloc, warned, ignored); } - if (sec != NULL && elf_discarded_section (sec)) - { - /* For relocs against symbols from removed linkonce sections, - or sections discarded by a linker script, we just want the - section contents zeroed. Avoid any special processing. */ - _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); - rel->r_info = 0; - rel->r_addend = 0; - continue; - } + if (sec != NULL && discarded_section (sec)) + RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, + rel, 1, relend, howto, 0, contents); - if (info->relocatable) + if (bfd_link_relocatable (info)) continue; r = elf32_h8_final_link_relocate (r_type, input_bfd, output_bfd, @@ -498,18 +508,14 @@ elf32_h8_relocate_section (bfd *output_bfd, struct bfd_link_info *info, 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; + (*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: - if (! ((*info->callbacks->undefined_symbol) - (info, name, input_bfd, input_section, - rel->r_offset, TRUE))) - return FALSE; + (*info->callbacks->undefined_symbol) + (info, name, input_bfd, input_section, rel->r_offset, TRUE); break; case bfd_reloc_outofrange: @@ -529,10 +535,8 @@ elf32_h8_relocate_section (bfd *output_bfd, struct bfd_link_info *info, /* fall through */ common_error: - if (!((*info->callbacks->warning) - (info, msg, name, input_bfd, input_section, - rel->r_offset))) - return FALSE; + (*info->callbacks->warning) (info, msg, name, input_bfd, + input_section, rel->r_offset); break; } } @@ -637,8 +641,10 @@ elf32_h8_object_p (bfd *abfd) time is the architecture/machine information. */ static bfd_boolean -elf32_h8_merge_private_bfd_data (bfd *ibfd, bfd *obfd) +elf32_h8_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) { + bfd *obfd = info->output_bfd; + if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour || bfd_get_flavour (obfd) != bfd_target_elf_flavour) return TRUE; @@ -676,7 +682,9 @@ elf32_h8_merge_private_bfd_data (bfd *ibfd, bfd *obfd) bset:24/32 -> bset:16 2 bytes (also applicable to other bit manipulation instructions) - mov.[bwl]:24/32 -> mov.[bwl]:16 2 bytes */ + mov.[bwl]:24/32 -> mov.[bwl]:16 2 bytes + + mov.[bwl] @(displ:24/32+ERx) -> mov.[bwl] @(displ:16+ERx) 4 bytes. */ static bfd_boolean elf32_h8_relax_section (bfd *abfd, asection *sec, @@ -696,7 +704,7 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, /* We don't have to do anything for a relocatable link, if this section does not have relocs, or if this is not a code section. */ - if (link_info->relocatable + if (bfd_link_relocatable (link_info) || (sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0 || (sec->flags & SEC_CODE) == 0) @@ -706,7 +714,7 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, /* Get a copy of the native relocations. */ internal_relocs = (_bfd_elf_link_read_relocs - (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, + (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, link_info->keep_memory)); if (internal_relocs == NULL) goto error_return; @@ -724,22 +732,26 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, { arelent bfd_reloc; - reloc_howto_type *h; elf32_h8_info_to_howto (abfd, &bfd_reloc, irel); - h = bfd_reloc.howto; } /* Keep track of the previous reloc so that we can delete some long jumps created by the compiler. */ if (irel != internal_relocs) last_reloc = irel - 1; - if (ELF32_R_TYPE (irel->r_info) != R_H8_DIR24R8 - && ELF32_R_TYPE (irel->r_info) != R_H8_PCREL16 - && ELF32_R_TYPE (irel->r_info) != R_H8_DIR16A8 - && ELF32_R_TYPE (irel->r_info) != R_H8_DIR24A8 - && ELF32_R_TYPE (irel->r_info) != R_H8_DIR32A16) - continue; + switch(ELF32_R_TYPE (irel->r_info)) + { + case R_H8_DIR24R8: + case R_H8_PCREL16: + case R_H8_DIR16A8: + case R_H8_DIR24A8: + case R_H8_DIR32A16: + case R_H8_DISP32A16: + break; + default: + continue; + } /* Get the section contents if we haven't done so already. */ if (contents == NULL) @@ -815,8 +827,8 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, the linker is run. */ switch (ELF32_R_TYPE (irel->r_info)) { - /* Try to turn a 24-bit absolute branch/call into an 8-bit - pc-relative branch/call. */ + /* Try to turn a 24-bit absolute branch/call into an 8-bit + pc-relative branch/call. */ case R_H8_DIR24R8: { bfd_vma value = symval + irel->r_addend; @@ -856,19 +868,19 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, Only perform this optimisation for jumps (code 0x5a) not subroutine calls, as otherwise it could transform: - mov.w r0,r0 - beq .L1 - jsr @_bar - .L1: rts - _bar: rts + mov.w r0,r0 + beq .L1 + jsr @_bar + .L1: rts + _bar: rts into: - mov.w r0,r0 - bne _bar - rts - _bar: rts + mov.w r0,r0 + bne _bar + rts + _bar: rts which changes the call (jsr) into a branch (bne). */ - if (code == 0x5a + if (code == 0x5a /* jmp24. */ && (int) gap <= 130 && (int) gap >= -128 && last_reloc @@ -912,7 +924,7 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, code ^= 1; bfd_put_8 (abfd, code, - contents + last_reloc->r_offset - 1); + contents + last_reloc->r_offset - 1); /* Delete four bytes of data. */ if (!elf32_h8_relax_delete_bytes (abfd, sec, @@ -926,11 +938,11 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, } if (code == 0x5e) - /* This is jsr. */ - bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 1); + /* This is jsr24 */ + bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 1); /* bsr8. */ else if (code == 0x5a) - /* This is jmp. */ - bfd_put_8 (abfd, 0x40, contents + irel->r_offset - 1); + /* This is jmp24 */ + bfd_put_8 (abfd, 0x40, contents + irel->r_offset - 1); /* bra8. */ else abort (); @@ -950,8 +962,8 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, break; } - /* Try to turn a 16-bit pc-relative branch into a 8-bit pc-relative - branch. */ + /* Try to turn a 16-bit pc-relative branch into a 8-bit pc-relative + branch. */ case R_H8_PCREL16: { bfd_vma value = symval + irel->r_addend; @@ -988,18 +1000,18 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, contains the condition code. */ code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - /* Compute the fisrt byte of the relaxed + /* Compute the first byte of the relaxed instruction. The original sequence 0x58 0xX0 is relaxed to 0x4X, where X represents the condition code. */ code &= 0xf0; code >>= 4; code |= 0x40; - bfd_put_8 (abfd, code, contents + irel->r_offset - 2); + bfd_put_8 (abfd, code, contents + irel->r_offset - 2); /* bCC:8. */ } - else if (code == 0x5c) + else if (code == 0x5c) /* bsr16. */ /* This is bsr. */ - bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 2); + bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 2); /* bsr8. */ else /* Might be MOVSD. */ break; @@ -1021,15 +1033,15 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, break; } - /* This is a 16-bit absolute address in one of the following - instructions: + /* This is a 16-bit absolute address in one of the following + instructions: "band", "bclr", "biand", "bild", "bior", "bist", "bixor", "bld", "bnot", "bor", "bset", "bst", "btst", "bxor", and "mov.b" - We may relax this into an 8-bit absolute address if it's in - the right range. */ + We may relax this into an 8-bit absolute address if it's in + the right range. */ case R_H8_DIR16A8: { bfd_vma value; @@ -1109,15 +1121,15 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, break; } - /* This is a 24-bit absolute address in one of the following - instructions: + /* This is a 24-bit absolute address in one of the following + instructions: "band", "bclr", "biand", "bild", "bior", "bist", "bixor", "bld", "bnot", "bor", "bset", "bst", "btst", "bxor", and "mov.b" - We may relax this into an 8-bit absolute address if it's in - the right range. */ + We may relax this into an 8-bit absolute address if it's in + the right range. */ case R_H8_DIR24A8: { bfd_vma value; @@ -1184,7 +1196,7 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, R_H8_DIR8); irel->r_offset--; - /* Delete two bytes of data. */ + /* Delete four bytes of data. */ if (!elf32_h8_relax_delete_bytes (abfd, sec, irel->r_offset + 1, 4)) goto error_return; @@ -1201,9 +1213,9 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, /* This is a 24-/32-bit absolute address in one of the following instructions: - "band", "bclr", "biand", "bild", "bior", "bist", - "bixor", "bld", "bnot", "bor", "bset", "bst", "btst", - "bxor", "ldc.w", "stc.w" and "mov.[bwl]" + "band", "bclr", "biand", "bild", "bior", "bist", + "bixor", "bld", "bnot", "bor", "bset", "bst", "btst", + "bxor", "ldc.w", "stc.w" and "mov.[bwl]" We may relax this into an 16-bit absolute address if it's in the right range. */ @@ -1226,7 +1238,7 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, if (irel->r_offset >= 4) { - /* Check for 4-byte MOVA relaxation. */ + /* Check for 4-byte MOVA relaxation (SH-specific). */ int second_reloc = 0; op_ptr = contents + irel->r_offset - 4; @@ -1247,7 +1259,8 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, second_reloc = 1; } } - if (irel < irelend) + + if (irel + 1 < irelend) { Elf_Internal_Rela *next_reloc = irel + 1; arelent bfd_reloc; @@ -1292,7 +1305,7 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, } } - /* Now check for short version of MOVA. */ + /* Now check for short version of MOVA. (SH-specific) */ op_ptr = contents + irel->r_offset - 2; op0 = bfd_get_8 (abfd, op_ptr + 0); op1 = bfd_get_8 (abfd, op_ptr + 1); @@ -1329,8 +1342,98 @@ elf32_h8_relax_section (bfd *abfd, asection *sec, Note that this is not required, and it may be slow. */ *again = TRUE; } - break; + break; /* case R_H8_DIR32A16 */ + } + + case R_H8_DISP32A16: + /* mov.[bwl] @(displ:24/32+ERx) -> mov.[bwl] @(displ:16+ERx) 4 bytes + It is assured that instruction uses at least 4 bytes opcode before + reloc entry addressing mode "register indirect with displacement" + relaxing options (all saving 4 bytes): + 0x78 0sss0000 0x6A 0010dddd disp:32 mov.b @(d:32,ERs),Rd -> + 0x6E 0sssdddd disp:16 mov.b @(d:16,ERs),Rd + 0x78 0sss0000 0x6B 0010dddd disp:32 mov.w @(d:32,ERs),Rd -> + 0x6F 0sssdddd disp:16 mov.w @(d:16,ERs),Rd + 0x01 0x00 0x78 0sss0000 0x6B 00100ddd disp:32 mov.l @(d:32,ERs),ERd -> + 0x01 0x00 0x6F 0sss0ddd disp:16 mov.l @(d:16,ERs),ERd + + 0x78 0ddd0000 0x6A 1010ssss disp:32 mov.b Rs,@(d:32,ERd) -> + 0x6E 1dddssss disp:16 mov.b Rs,@(d:16,ERd) + 0x78 0ddd0000 0x6B 1010ssss disp:32 mov.w Rs,@(d:32,ERd) -> + 0x6F 1dddssss disp:16 mov.w Rs,@(d:16,ERd) + 0x01 0x00 0x78 xddd0000 0x6B 10100sss disp:32 mov.l ERs,@(d:32,ERd) -> + 0x01 0x00 0x6F 1ddd0sss disp:16 mov.l ERs,@(d:16,ERd) + mov.l prefix 0x01 0x00 can be left as is and mov.l handled same + as mov.w/ */ + { + bfd_vma value; + + value = bfd_h8300_pad_address (abfd, symval + irel->r_addend); + if (value <= 0x7fff || value >= 0xffff8000u) + { + unsigned char op0, op1, op2, op3, op0n, op1n; + int relax = 0; + + /* Note that we've changed the relocs, section contents, + etc. */ + elf_section_data (sec)->relocs = internal_relocs; + elf_section_data (sec)->this_hdr.contents = contents; + symtab_hdr->contents = (unsigned char *) isymbuf; + + if (irel->r_offset >= 4) + { + op0 = bfd_get_8 (abfd, contents + irel->r_offset - 4); + op1 = bfd_get_8 (abfd, contents + irel->r_offset - 3); + op2 = bfd_get_8 (abfd, contents + irel->r_offset - 2); + op3 = bfd_get_8 (abfd, contents + irel->r_offset - 1); + + if (op0 == 0x78) + { + switch(op2) + { + case 0x6A: + if ((op1 & 0x8F) == 0x00 && (op3 & 0x70) == 0x20) + { + /* mov.b. */ + op0n = 0x6E; + relax = 1; + } + break; + case 0x6B: + if ((op1 & 0x0F) == 0x00 && (op3 & 0x70) == 0x20) + { + /* mov.w/l. */ + op0n = 0x6F; + relax = 1; + } + break; + default: + break; + } + } + } + + if (relax) + { + op1n = (op3 & 0x8F) | (op1 & 0x70); + bfd_put_8 (abfd, op0n, contents + irel->r_offset - 4); + bfd_put_8 (abfd, op1n, contents + irel->r_offset - 3); + + /* Fix the relocation's type. */ + irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_H8_DIR16); + irel->r_offset -= 2; + + /* Delete four bytes of data. */ + if (!elf32_h8_relax_delete_bytes (abfd, sec, irel->r_offset + 2, 4)) + goto error_return; + + /* That will change things, so, we should relax again. + Note that this is not required, and it may be slow. */ + *again = TRUE; + } + } } + break; default: break; @@ -1386,7 +1489,6 @@ elf32_h8_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr, int count) unsigned int sec_shndx; bfd_byte *contents; Elf_Internal_Rela *irel, *irelend; - Elf_Internal_Rela *irelalign; Elf_Internal_Sym *isym; Elf_Internal_Sym *isymend; bfd_vma toaddr; @@ -1398,10 +1500,6 @@ elf32_h8_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr, int count) contents = elf_section_data (sec)->this_hdr.contents; - /* The deletion must stop at the next ALIGN reloc for an aligment - power larger than the number of bytes we are deleting. */ - - irelalign = NULL; toaddr = sec->size; irel = elf_section_data (sec)->relocs; @@ -1417,7 +1515,7 @@ elf32_h8_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr, int count) { /* Get the new reloc address. */ if ((irel->r_offset > addr - && irel->r_offset < toaddr)) + && irel->r_offset <= toaddr)) irel->r_offset -= count; } @@ -1429,7 +1527,7 @@ elf32_h8_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr, int count) { if (isym->st_shndx == sec_shndx && isym->st_value > addr - && isym->st_value < toaddr) + && isym->st_value <= toaddr) isym->st_value -= count; } @@ -1441,14 +1539,13 @@ elf32_h8_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr, int count) for (; sym_hashes < end_hashes; sym_hashes++) { struct elf_link_hash_entry *sym_hash = *sym_hashes; + if ((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 - && sym_hash->root.u.def.value < toaddr) - { - sym_hash->root.u.def.value -= count; - } + && sym_hash->root.u.def.value <= toaddr) + sym_hash->root.u.def.value -= count; } return TRUE; @@ -1537,7 +1634,7 @@ elf32_h8_get_relocated_section_contents (bfd *output_bfd, bfd_size_type amt; internal_relocs = (_bfd_elf_link_read_relocs - (input_bfd, input_section, (PTR) NULL, + (input_bfd, input_section, NULL, (Elf_Internal_Rela *) NULL, FALSE)); if (internal_relocs == NULL) goto error_return; @@ -1605,7 +1702,7 @@ elf32_h8_get_relocated_section_contents (bfd *output_bfd, } -#define TARGET_BIG_SYM bfd_elf32_h8300_vec +#define TARGET_BIG_SYM h8300_elf32_vec #define TARGET_BIG_NAME "elf32-h8300" #define ELF_ARCH bfd_arch_h8300 #define ELF_MACHINE_CODE EM_H8_300 @@ -1644,3 +1741,12 @@ elf32_h8_get_relocated_section_contents (bfd *output_bfd, #define elf_symbol_leading_char '_' #include "elf32-target.h" + +#undef TARGET_BIG_SYM +#define TARGET_BIG_SYM h8300_elf32_linux_vec +#undef TARGET_BIG_NAME +#define TARGET_BIG_NAME "elf32-h8300-linux" +#undef elf_symbol_leading_char +#define elf32_bed elf32_h8300_linux_bed + +#include "elf32-target.h"