diff options
Diffstat (limited to 'contrib/binutils/bfd/reloc.c')
| -rw-r--r-- | contrib/binutils/bfd/reloc.c | 380 |
1 files changed, 370 insertions, 10 deletions
diff --git a/contrib/binutils/bfd/reloc.c b/contrib/binutils/bfd/reloc.c index f1d09a5..1e5d4bd 100644 --- a/contrib/binutils/bfd/reloc.c +++ b/contrib/binutils/bfd/reloc.c @@ -1,6 +1,6 @@ /* BFD support for handling relocation entries. Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, - 2000, 2001, 2002, 2003, 2004, 2005, 2006 + 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. Written by Cygnus Support. @@ -47,8 +47,8 @@ SECTION /* DO compile in the reloc_code name table from libbfd.h. */ #define _BFD_MAKE_TABLE_bfd_reloc_code_real -#include "bfd.h" #include "sysdep.h" +#include "bfd.h" #include "bfdlink.h" #include "libbfd.h" /* @@ -1522,7 +1522,6 @@ _bfd_relocate_contents (reloc_howto_type *howto, switch (size) { default: - case 0: abort (); case 1: bfd_put_8 (input_bfd, x, location); @@ -1545,6 +1544,72 @@ _bfd_relocate_contents (reloc_howto_type *howto, return flag; } +/* Clear a given location using a given howto, by applying a relocation value + of zero and discarding any in-place addend. This is used for fixed-up + relocations against discarded symbols, to make ignorable debug or unwind + information more obvious. */ + +void +_bfd_clear_contents (reloc_howto_type *howto, + bfd *input_bfd, + bfd_byte *location) +{ + int size; + bfd_vma x = 0; + + /* Get the value we are going to relocate. */ + size = bfd_get_reloc_size (howto); + switch (size) + { + default: + case 0: + abort (); + case 1: + x = bfd_get_8 (input_bfd, location); + break; + case 2: + x = bfd_get_16 (input_bfd, location); + break; + case 4: + x = bfd_get_32 (input_bfd, location); + break; + case 8: +#ifdef BFD64 + x = bfd_get_64 (input_bfd, location); +#else + abort (); +#endif + break; + } + + /* Zero out the unwanted bits of X. */ + x &= ~howto->dst_mask; + + /* Put the relocated value back in the object file. */ + switch (size) + { + default: + case 0: + abort (); + case 1: + bfd_put_8 (input_bfd, x, location); + break; + case 2: + bfd_put_16 (input_bfd, x, location); + break; + case 4: + bfd_put_32 (input_bfd, x, location); + break; + case 8: +#ifdef BFD64 + bfd_put_64 (input_bfd, x, location); +#else + abort (); +#endif + break; + } +} + /* DOCDD INODE @@ -1884,6 +1949,37 @@ ENUMDOC SPARC TLS relocations ENUM + BFD_RELOC_SPU_IMM7 +ENUMX + BFD_RELOC_SPU_IMM8 +ENUMX + BFD_RELOC_SPU_IMM10 +ENUMX + BFD_RELOC_SPU_IMM10W +ENUMX + BFD_RELOC_SPU_IMM16 +ENUMX + BFD_RELOC_SPU_IMM16W +ENUMX + BFD_RELOC_SPU_IMM18 +ENUMX + BFD_RELOC_SPU_PCREL9a +ENUMX + BFD_RELOC_SPU_PCREL9b +ENUMX + BFD_RELOC_SPU_PCREL16 +ENUMX + BFD_RELOC_SPU_LO16 +ENUMX + BFD_RELOC_SPU_HI16 +ENUMX + BFD_RELOC_SPU_PPU32 +ENUMX + BFD_RELOC_SPU_PPU64 +ENUMDOC + SPU Relocations. + +ENUM BFD_RELOC_ALPHA_GPDISP_HI16 ENUMDOC Alpha ECOFF and ELF relocations. Some of these treat the symbol or @@ -2701,6 +2797,24 @@ ENUM BFD_RELOC_ARM_PREL31 ENUMDOC 31-bit PC relative address. +ENUM + BFD_RELOC_ARM_MOVW +ENUMX + BFD_RELOC_ARM_MOVT +ENUMX + BFD_RELOC_ARM_MOVW_PCREL +ENUMX + BFD_RELOC_ARM_MOVT_PCREL +ENUMX + BFD_RELOC_ARM_THUMB_MOVW +ENUMX + BFD_RELOC_ARM_THUMB_MOVT +ENUMX + BFD_RELOC_ARM_THUMB_MOVW_PCREL +ENUMX + BFD_RELOC_ARM_THUMB_MOVT_PCREL +ENUMDOC + Low and High halfword relocations for MOVW and MOVT instructions. ENUM BFD_RELOC_ARM_JUMP_SLOT @@ -2739,12 +2853,73 @@ ENUMDOC ARM thread-local storage relocations. ENUM + BFD_RELOC_ARM_ALU_PC_G0_NC +ENUMX + BFD_RELOC_ARM_ALU_PC_G0 +ENUMX + BFD_RELOC_ARM_ALU_PC_G1_NC +ENUMX + BFD_RELOC_ARM_ALU_PC_G1 +ENUMX + BFD_RELOC_ARM_ALU_PC_G2 +ENUMX + BFD_RELOC_ARM_LDR_PC_G0 +ENUMX + BFD_RELOC_ARM_LDR_PC_G1 +ENUMX + BFD_RELOC_ARM_LDR_PC_G2 +ENUMX + BFD_RELOC_ARM_LDRS_PC_G0 +ENUMX + BFD_RELOC_ARM_LDRS_PC_G1 +ENUMX + BFD_RELOC_ARM_LDRS_PC_G2 +ENUMX + BFD_RELOC_ARM_LDC_PC_G0 +ENUMX + BFD_RELOC_ARM_LDC_PC_G1 +ENUMX + BFD_RELOC_ARM_LDC_PC_G2 +ENUMX + BFD_RELOC_ARM_ALU_SB_G0_NC +ENUMX + BFD_RELOC_ARM_ALU_SB_G0 +ENUMX + BFD_RELOC_ARM_ALU_SB_G1_NC +ENUMX + BFD_RELOC_ARM_ALU_SB_G1 +ENUMX + BFD_RELOC_ARM_ALU_SB_G2 +ENUMX + BFD_RELOC_ARM_LDR_SB_G0 +ENUMX + BFD_RELOC_ARM_LDR_SB_G1 +ENUMX + BFD_RELOC_ARM_LDR_SB_G2 +ENUMX + BFD_RELOC_ARM_LDRS_SB_G0 +ENUMX + BFD_RELOC_ARM_LDRS_SB_G1 +ENUMX + BFD_RELOC_ARM_LDRS_SB_G2 +ENUMX + BFD_RELOC_ARM_LDC_SB_G0 +ENUMX + BFD_RELOC_ARM_LDC_SB_G1 +ENUMX + BFD_RELOC_ARM_LDC_SB_G2 +ENUMDOC + ARM group relocations. + +ENUM BFD_RELOC_ARM_IMMEDIATE ENUMX BFD_RELOC_ARM_ADRL_IMMEDIATE ENUMX BFD_RELOC_ARM_T32_IMMEDIATE ENUMX + BFD_RELOC_ARM_T32_ADD_IMM +ENUMX BFD_RELOC_ARM_T32_IMM12 ENUMX BFD_RELOC_ARM_T32_ADD_PC12 @@ -3530,6 +3705,50 @@ ENUMDOC Motorola Mcore relocations. ENUM + BFD_RELOC_MEP_8 +ENUMX + BFD_RELOC_MEP_16 +ENUMX + BFD_RELOC_MEP_32 +ENUMX + BFD_RELOC_MEP_PCREL8A2 +ENUMX + BFD_RELOC_MEP_PCREL12A2 +ENUMX + BFD_RELOC_MEP_PCREL17A2 +ENUMX + BFD_RELOC_MEP_PCREL24A2 +ENUMX + BFD_RELOC_MEP_PCABS24A2 +ENUMX + BFD_RELOC_MEP_LOW16 +ENUMX + BFD_RELOC_MEP_HI16U +ENUMX + BFD_RELOC_MEP_HI16S +ENUMX + BFD_RELOC_MEP_GPREL +ENUMX + BFD_RELOC_MEP_TPREL +ENUMX + BFD_RELOC_MEP_TPREL7 +ENUMX + BFD_RELOC_MEP_TPREL7A2 +ENUMX + BFD_RELOC_MEP_TPREL7A4 +ENUMX + BFD_RELOC_MEP_UIMM24 +ENUMX + BFD_RELOC_MEP_ADDR24A4 +ENUMX + BFD_RELOC_MEP_GNU_VTINHERIT +ENUMX + BFD_RELOC_MEP_GNU_VTENTRY +ENUMDOC + Toshiba Media Processor Relocations. +COMMENT + +ENUM BFD_RELOC_MMIX_GETA ENUMX BFD_RELOC_MMIX_GETA_1 @@ -3666,11 +3885,25 @@ ENUMDOC This is a 16 bit reloc for the AVR that stores 8 bit value (usually command address) into 8 bit immediate value of LDI insn. ENUM + BFD_RELOC_AVR_LO8_LDI_GS +ENUMDOC + This is a 16 bit reloc for the AVR that stores 8 bit value + (command address) into 8 bit immediate value of LDI insn. If the address + is beyond the 128k boundary, the linker inserts a jump stub for this reloc + in the lower 128k. +ENUM BFD_RELOC_AVR_HI8_LDI_PM ENUMDOC This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit of command address) into 8 bit immediate value of LDI insn. ENUM + BFD_RELOC_AVR_HI8_LDI_GS +ENUMDOC + This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit + of command address) into 8 bit immediate value of LDI insn. If the address + is beyond the 128k boundary, the linker inserts a jump stub for this reloc + below 128k. +ENUM BFD_RELOC_AVR_HH8_LDI_PM ENUMDOC This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit @@ -3873,6 +4106,43 @@ ENUMDOC Long displacement extension. ENUM + BFD_RELOC_SCORE_DUMMY1 +ENUMDOC + Score relocations +ENUM + BFD_RELOC_SCORE_GPREL15 +ENUMDOC + Low 16 bit for load/store +ENUM + BFD_RELOC_SCORE_DUMMY2 +ENUMX + BFD_RELOC_SCORE_JMP +ENUMDOC + This is a 24-bit reloc with the right 1 bit assumed to be 0 +ENUM + BFD_RELOC_SCORE_BRANCH +ENUMDOC + This is a 19-bit reloc with the right 1 bit assumed to be 0 +ENUM + BFD_RELOC_SCORE16_JMP +ENUMDOC + This is a 11-bit reloc with the right 1 bit assumed to be 0 +ENUM + BFD_RELOC_SCORE16_BRANCH +ENUMDOC + This is a 8-bit reloc with the right 1 bit assumed to be 0 +ENUM + BFD_RELOC_SCORE_GOT15 +ENUMX + BFD_RELOC_SCORE_GOT_LO16 +ENUMX + BFD_RELOC_SCORE_CALL15 +ENUMX + BFD_RELOC_SCORE_DUMMY_HI16 +ENUMDOC + Undocumented Score relocs + +ENUM BFD_RELOC_IP2K_FR9 ENUMDOC Scenix IP2K - 9-bit register number / data address @@ -4246,6 +4516,63 @@ ENUMDOC NS CR16C Relocations. ENUM + BFD_RELOC_CR16_NUM8 +ENUMX + BFD_RELOC_CR16_NUM16 +ENUMX + BFD_RELOC_CR16_NUM32 +ENUMX + BFD_RELOC_CR16_NUM32a +ENUMX + BFD_RELOC_CR16_REGREL0 +ENUMX + BFD_RELOC_CR16_REGREL4 +ENUMX + BFD_RELOC_CR16_REGREL4a +ENUMX + BFD_RELOC_CR16_REGREL14 +ENUMX + BFD_RELOC_CR16_REGREL14a +ENUMX + BFD_RELOC_CR16_REGREL16 +ENUMX + BFD_RELOC_CR16_REGREL20 +ENUMX + BFD_RELOC_CR16_REGREL20a +ENUMX + BFD_RELOC_CR16_ABS20 +ENUMX + BFD_RELOC_CR16_ABS24 +ENUMX + BFD_RELOC_CR16_IMM4 +ENUMX + BFD_RELOC_CR16_IMM8 +ENUMX + BFD_RELOC_CR16_IMM16 +ENUMX + BFD_RELOC_CR16_IMM20 +ENUMX + BFD_RELOC_CR16_IMM24 +ENUMX + BFD_RELOC_CR16_IMM32 +ENUMX + BFD_RELOC_CR16_IMM32a +ENUMX + BFD_RELOC_CR16_DISP4 +ENUMX + BFD_RELOC_CR16_DISP8 +ENUMX + BFD_RELOC_CR16_DISP16 +ENUMX + BFD_RELOC_CR16_DISP20 +ENUMX + BFD_RELOC_CR16_DISP24 +ENUMX + BFD_RELOC_CR16_DISP24a +ENUMDOC + NS CR16 Relocations. + +ENUM BFD_RELOC_CRX_REL4 ENUMX BFD_RELOC_CRX_REL8 @@ -4449,6 +4776,12 @@ ENUMDOC Sony Xstormy16 Relocations. ENUM + BFD_RELOC_RELC +ENUMDOC + Self-describing complex relocations. +COMMENT + +ENUM BFD_RELOC_XC16X_PAG ENUMX BFD_RELOC_XC16X_POF @@ -4670,10 +5003,13 @@ CODE_FRAGMENT /* FUNCTION bfd_reloc_type_lookup + bfd_reloc_name_lookup SYNOPSIS reloc_howto_type *bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code); + reloc_howto_type *bfd_reloc_name_lookup + (bfd *abfd, const char *reloc_name); DESCRIPTION Return a pointer to a howto structure which, when @@ -4688,6 +5024,12 @@ bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code) return BFD_SEND (abfd, reloc_type_lookup, (abfd, code)); } +reloc_howto_type * +bfd_reloc_name_lookup (bfd *abfd, const char *reloc_name) +{ + return BFD_SEND (abfd, reloc_name_lookup, (abfd, reloc_name)); +} + static reloc_howto_type bfd_howto_32 = HOWTO (0, 00, 2, 32, FALSE, 0, complain_overflow_dont, 0, "VRT32", FALSE, 0xffffffff, 0xffffffff, TRUE); @@ -4876,13 +5218,31 @@ bfd_generic_get_relocated_section_contents (bfd *abfd, for (parent = reloc_vector; *parent != NULL; parent++) { char *error_message = NULL; - bfd_reloc_status_type r = - bfd_perform_relocation (input_bfd, - *parent, - data, - input_section, - relocatable ? abfd : NULL, - &error_message); + asymbol *symbol; + bfd_reloc_status_type r; + + symbol = *(*parent)->sym_ptr_ptr; + if (symbol->section && elf_discarded_section (symbol->section)) + { + bfd_byte *p; + static reloc_howto_type none_howto + = HOWTO (0, 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL, + "unused", FALSE, 0, 0, FALSE); + + p = data + (*parent)->address * bfd_octets_per_byte (input_bfd); + _bfd_clear_contents ((*parent)->howto, input_bfd, p); + (*parent)->sym_ptr_ptr = bfd_abs_section.symbol_ptr_ptr; + (*parent)->addend = 0; + (*parent)->howto = &none_howto; + r = bfd_reloc_ok; + } + else + r = bfd_perform_relocation (input_bfd, + *parent, + data, + input_section, + relocatable ? abfd : NULL, + &error_message); if (relocatable) { |
