From 70e818d42344e8f5cea57089b539952b5d0b64b5 Mon Sep 17 00:00:00 2001 From: David Edelsohn Date: Thu, 9 Oct 1997 23:46:24 +0000 Subject: * elf64-sparc.c (sparc_elf_{hix22,lox10}_reloc): New functions. (sparc64_elf_howto_table): Use them for HIX22,LOX10 relocs. --- bfd/elf64-sparc.c | 335 ++++++++++++++++++++++++++++++++++++++++++++---------- 1 file changed, 272 insertions(+), 63 deletions(-) (limited to 'bfd/elf64-sparc.c') diff --git a/bfd/elf64-sparc.c b/bfd/elf64-sparc.c index 6b80934..a565754 100644 --- a/bfd/elf64-sparc.c +++ b/bfd/elf64-sparc.c @@ -17,17 +17,21 @@ 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -/* We need a published ABI spec for this. Until one comes out, don't - assume this'll remain unchanged forever. */ - #include "bfd.h" #include "sysdep.h" #include "libbfd.h" #include "elf-bfd.h" -#define SPARC64_OLD_RELOCS +/* This is defined if one wants to build upward compatible binaries + with the original sparc64-elf toolchain. The support is kept in for + now but is turned off by default. dje 970930 */ +/*#define SPARC64_OLD_RELOCS*/ + #include "elf/sparc.h" +/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ +#define MINUS_ONE (~ (bfd_vma) 0) + static reloc_howto_type *sparc64_elf_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type)); static void sparc64_elf_info_to_howto @@ -37,15 +41,17 @@ static boolean sparc64_elf_relocate_section PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); static boolean sparc64_elf_object_p PARAMS ((bfd *)); + +/* The relocation "howto" table. */ -/* The howto table and associated functions. - ??? Some of the relocation values have changed. Until we're ready - to upgrade, we have our own copy. At some point a non upward compatible - change will be made at which point this table can be deleted and we'll - use the one in elf32-sparc.c. */ - +static bfd_reloc_status_type sparc_elf_notsup_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); static bfd_reloc_status_type sparc_elf_wdisp16_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +static bfd_reloc_status_type sparc_elf_hix22_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +static bfd_reloc_status_type sparc_elf_lox10_reloc + PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); static reloc_howto_type sparc64_elf_howto_table[] = { @@ -73,30 +79,39 @@ static reloc_howto_type sparc64_elf_howto_table[] = HOWTO(R_SPARC_JMP_SLOT, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",false,0,0x00000000,true), HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true), HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0x00000000,true), -#if 0 /* not used yet */ - HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PLT32", false,0,0x00000000,true), - HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true), - HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true), - HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true), - HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true), - HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true), +#ifndef SPARC64_OLD_RELOCS + /* These aren't implemented yet. */ + HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PLT32", false,0,0x00000000,true), + HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true), + HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true), + HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true), + HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true), + HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true), #endif HOWTO(R_SPARC_10, 0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true), HOWTO(R_SPARC_11, 0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true), - HOWTO(R_SPARC_64, 0,4,00,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", false,0,~ (bfd_vma) 0, true), - HOWTO(R_SPARC_OLO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_OLO10", false,0,0x000003ff,true), - HOWTO(R_SPARC_HH22, 42,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true), + HOWTO(R_SPARC_64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", false,0,MINUS_ONE, true), + HOWTO(R_SPARC_OLO10, 0,2,13,false,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", false,0,0x00001fff,true), + HOWTO(R_SPARC_HH22, 42,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true), HOWTO(R_SPARC_HM10, 32,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true), HOWTO(R_SPARC_LM22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true), - HOWTO(R_SPARC_PC_HH22, 42,2,22,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true), + HOWTO(R_SPARC_PC_HH22, 42,2,22,true, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true), HOWTO(R_SPARC_PC_HM10, 32,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true), HOWTO(R_SPARC_PC_LM22, 10,2,22,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true), HOWTO(R_SPARC_WDISP16, 2,2,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true), - HOWTO(R_SPARC_WDISP19, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true), + HOWTO(R_SPARC_WDISP19, 2,2,19,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true), HOWTO(R_SPARC_UNUSED_42, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",false,0,0x00000000,true), HOWTO(R_SPARC_7, 0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true), HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true), HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,true), + HOWTO(R_SPARC_DISP64, 0,4,64,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", false,0,MINUS_ONE, true), + HOWTO(R_SPARC_PLT64, 0,4,64,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_PLT64", false,0,MINUS_ONE, false), + HOWTO(R_SPARC_HIX22, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", false,0,MINUS_ONE, false), + HOWTO(R_SPARC_LOX10, 0,4, 0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", false,0,MINUS_ONE, false), + HOWTO(R_SPARC_H44, 22,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", false,0,0x003fffff,false), + HOWTO(R_SPARC_M44, 12,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", false,0,0x000003ff,false), + HOWTO(R_SPARC_L44, 0,2,13,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", false,0,0x00000fff,false), + HOWTO(R_SPARC_REGISTER, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",false,0,MINUS_ONE, false) }; struct elf_reloc_map { @@ -110,9 +125,7 @@ static CONST struct elf_reloc_map sparc_reloc_map[] = { BFD_RELOC_16, R_SPARC_16, }, { BFD_RELOC_8, R_SPARC_8 }, { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, - /* ??? This might cause us to need separate functions in elf{32,64}-sparc.c - (we could still have just one table), but is this reloc ever used? */ - { BFD_RELOC_CTOR, R_SPARC_32 }, /* @@ Assumes 32 bits. */ + { BFD_RELOC_CTOR, R_SPARC_64 }, { BFD_RELOC_32, R_SPARC_32 }, { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, { BFD_RELOC_HI22, R_SPARC_HI22 }, @@ -148,6 +161,14 @@ static CONST struct elf_reloc_map sparc_reloc_map[] = {BFD_RELOC_SPARC_7, R_SPARC_7}, {BFD_RELOC_SPARC_5, R_SPARC_5}, {BFD_RELOC_SPARC_6, R_SPARC_6}, + {BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64}, + {BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64}, + {BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22}, + {BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10}, + {BFD_RELOC_SPARC_H44, R_SPARC_H44}, + {BFD_RELOC_SPARC_M44, R_SPARC_M44}, + {BFD_RELOC_SPARC_L44, R_SPARC_L44}, + {BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER} }; static reloc_howto_type * @@ -174,36 +195,45 @@ sparc64_elf_info_to_howto (abfd, cache_ptr, dst) cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE (dst->r_info)]; } -/* Handle the WDISP16 reloc. */ +/* Utility for performing the standard initial work of an instruction + relocation. + *PRELOCATION will contain the relocated item. + *PINSN will contain the instruction from the input stream. + If the result is `bfd_reloc_other' the caller can continue with + performing the relocation. Otherwise it must stop and return the + value to its caller. */ static bfd_reloc_status_type -sparc_elf_wdisp16_reloc (abfd, - reloc_entry, - symbol, - data, - input_section, - output_bfd, - error_message) +init_insn_reloc (abfd, + reloc_entry, + symbol, + data, + input_section, + output_bfd, + prelocation, + pinsn) bfd *abfd; arelent *reloc_entry; asymbol *symbol; PTR data; asection *input_section; bfd *output_bfd; - char **error_message; + bfd_vma *prelocation; + bfd_vma *pinsn; { bfd_vma relocation; - bfd_vma x; + reloc_howto_type *howto = reloc_entry->howto; if (output_bfd != (bfd *) NULL && (symbol->flags & BSF_SECTION_SYM) == 0 - && (! reloc_entry->howto->partial_inplace + && (! howto->partial_inplace || reloc_entry->addend == 0)) { reloc_entry->address += input_section->output_offset; return bfd_reloc_ok; } + /* This works because partial_inplace == false. */ if (output_bfd != NULL) return bfd_reloc_continue; @@ -214,14 +244,69 @@ sparc_elf_wdisp16_reloc (abfd, + symbol->section->output_section->vma + symbol->section->output_offset); relocation += reloc_entry->addend; - relocation -= (input_section->output_section->vma - + input_section->output_offset); - relocation -= reloc_entry->address; + if (howto->pc_relative) + { + relocation -= (input_section->output_section->vma + + input_section->output_offset); + relocation -= reloc_entry->address; + } + + *prelocation = relocation; + *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); + return bfd_reloc_other; +} - x = bfd_get_32 (abfd, (char *) data + reloc_entry->address); - x |= ((((relocation >> 2) & 0xc000) << 6) - | ((relocation >> 2) & 0x3fff)); - bfd_put_32 (abfd, x, (char *) data + reloc_entry->address); +/* For unsupported relocs. */ + +static bfd_reloc_status_type +sparc_elf_notsup_reloc (abfd, + reloc_entry, + symbol, + data, + input_section, + output_bfd, + error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + return bfd_reloc_notsupported; +} + +/* Handle the WDISP16 reloc. */ + +static bfd_reloc_status_type +sparc_elf_wdisp16_reloc (abfd, + reloc_entry, + symbol, + data, + input_section, + output_bfd, + error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + bfd_vma relocation; + bfd_vma insn; + bfd_reloc_status_type status; + + status = init_insn_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, &relocation, &insn); + if (status != bfd_reloc_other) + return status; + + insn = (insn & ~0x303fff) | ((((relocation >> 2) & 0xc000) << 6) + | ((relocation >> 2) & 0x3fff)); + bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); if ((bfd_signed_vma) relocation < - 0x40000 || (bfd_signed_vma) relocation > 0x3ffff) @@ -229,6 +314,76 @@ sparc_elf_wdisp16_reloc (abfd, else return bfd_reloc_ok; } + +/* Handle the HIX22 reloc. */ + +static bfd_reloc_status_type +sparc_elf_hix22_reloc (abfd, + reloc_entry, + symbol, + data, + input_section, + output_bfd, + error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + bfd_vma relocation; + bfd_vma insn; + bfd_reloc_status_type status; + + status = init_insn_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, &relocation, &insn); + if (status != bfd_reloc_other) + return status; + + relocation ^= MINUS_ONE; + insn = (insn & ~0x3fffff) | ((relocation >> 10) & 0x3fffff); + bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); + + if ((relocation & ~ (bfd_vma) 0xffffffff) != 0) + return bfd_reloc_overflow; + else + return bfd_reloc_ok; +} + +/* Handle the LOX10 reloc. */ + +static bfd_reloc_status_type +sparc_elf_lox10_reloc (abfd, + reloc_entry, + symbol, + data, + input_section, + output_bfd, + error_message) + bfd *abfd; + arelent *reloc_entry; + asymbol *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; + char **error_message; +{ + bfd_vma relocation; + bfd_vma insn; + bfd_reloc_status_type status; + + status = init_insn_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, &relocation, &insn); + if (status != bfd_reloc_other) + return status; + + insn = (insn & ~0x1fff) | 0x1c00 | (relocation & 0x3ff); + bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); + + return bfd_reloc_ok; +} /* Relocate a SPARC64 ELF section. */ @@ -332,29 +487,83 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, } } - if (r_type != R_SPARC_WDISP16) - r = _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, - relocation, rel->r_addend); - else + switch (r_type) { - bfd_vma x; - - relocation += rel->r_addend; - relocation -= (input_section->output_section->vma - + input_section->output_offset); - relocation -= rel->r_offset; + case R_SPARC_OLO10: + { + bfd_vma x; + + relocation += rel->r_addend; + relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info); + + x = bfd_get_32 (input_bfd, contents + rel->r_offset); + x = (x & ~0x1fff) | (relocation & 0x1fff); + bfd_put_32 (input_bfd, x, contents + rel->r_offset); + + r = bfd_check_overflow (howto->complain_on_overflow, + howto->bitsize, howto->rightshift, + relocation); + } + break; + + case R_SPARC_WDISP16: + { + bfd_vma x; + + relocation += rel->r_addend; + /* Adjust for pc-relative-ness. */ + relocation -= (input_section->output_section->vma + + input_section->output_offset); + relocation -= rel->r_offset; + + x = bfd_get_32 (input_bfd, contents + rel->r_offset); + x = (x & ~0x303fff) | ((((relocation >> 2) & 0xc000) << 6) + | ((relocation >> 2) & 0x3fff)); + bfd_put_32 (input_bfd, x, contents + rel->r_offset); + + r = bfd_check_overflow (howto->complain_on_overflow, + howto->bitsize, howto->rightshift, + relocation); + } + break; + + case R_SPARC_HIX22: + { + bfd_vma x; + + relocation += rel->r_addend; + relocation = relocation ^ MINUS_ONE; + + x = bfd_get_32 (input_bfd, contents + rel->r_offset); + x = (x & ~0x3fffff) | ((relocation >> 10) & 0x3fffff); + bfd_put_32 (input_bfd, x, contents + rel->r_offset); + + r = bfd_check_overflow (howto->complain_on_overflow, + howto->bitsize, howto->rightshift, + relocation); + } + break; + + case R_SPARC_LOX10: + { + bfd_vma x; + + relocation += rel->r_addend; + relocation = (relocation & 0x3ff) | 0x1c00; + + x = bfd_get_32 (input_bfd, contents + rel->r_offset); + x = (x & ~0x1fff) | relocation; + bfd_put_32 (input_bfd, x, contents + rel->r_offset); - x = bfd_get_32 (input_bfd, contents + rel->r_offset); - x |= ((((relocation >> 2) & 0xc000) << 6) - | ((relocation >> 2) & 0x3fff)); - bfd_put_32 (input_bfd, x, contents + rel->r_offset); - - if ((bfd_signed_vma) relocation < - 0x40000 - || (bfd_signed_vma) relocation > 0x3ffff) - r = bfd_reloc_overflow; - else r = bfd_reloc_ok; + } + break; + + default: + r = _bfd_final_link_relocate (howto, input_bfd, input_section, + contents, rel->r_offset, + relocation, rel->r_addend); + break; } if (r != bfd_reloc_ok) -- cgit v1.1