diff options
author | Jie Zhang <jie.zhang@analog.com> | 2008-07-11 19:24:39 +0000 |
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committer | Jie Zhang <jie.zhang@analog.com> | 2008-07-11 19:24:39 +0000 |
commit | 97ed9ee13ef647ddcf88e25eb038848e1b4fb806 (patch) | |
tree | 20e15a72d866a30aef6fcb7186a2b8dece736930 | |
parent | 901d034309bb91e76696aa52942e13429593d9cc (diff) | |
download | gdb-97ed9ee13ef647ddcf88e25eb038848e1b4fb806.tar.gz |
bfd/
* elf.c (_bfd_elf_map_sections_to_segments): Don't put
executable sections into the same segment with other
read only sections if --sep-code.
* elf32-bfin.c (elf32_bfin_code_in_l1): New variable.
(elf32_bfin_data_in_l1): New variable.
(elf32_bfin_final_write_processing): New.
(elf32_bfin_special_sections[]): New.
(elf_backend_final_write_processing): Define.
(elf_backend_special_sections): Define.
binutils/
* readelf.c (get_machine_flags): Deal with Blackfin specific
flags.
include/
* bfdlink.h (struct bfd_link_info): Add sep_code member
variable.
* elf/bfin.h (EF_BFIN_CODE_IN_L1): Define.
(EF_BFIN_DATA_IN_L1): Define.
ld/
* Makefile.am (eelf32bfin.c): Depend on bfin.em.
(eelf32bfinfd.c): Likewise.
* Makefile.in: Regenerate.
* gen-doc.texi: Set Blackfin.
* ld.texinfo: Document --sep-code and Blackfin specific
options.
* ldmain.c (main): Initialize link_info.sep_code.
* lexsup.c (enum option_values): Add OPTION_SEP_CODE.
(ld_options[]): Add --sep-code.
(parse_args): Deal with --sep-code.
* emulparams/bfin.sh (EXTRA_EM_FILE): Define.
* emulparams/elf32bfinfd.sh (OTHER_SECTIONS): Define.
* emultempl/bfin.em: New file.
-rw-r--r-- | bfd/ChangeLog | 12 | ||||
-rw-r--r-- | bfd/elf.c | 17 | ||||
-rw-r--r-- | bfd/elf32-bfin.c | 27 | ||||
-rw-r--r-- | include/ChangeLog | 7 | ||||
-rw-r--r-- | include/bfdlink.h | 3 | ||||
-rw-r--r-- | include/elf/bfin.h | 3 |
6 files changed, 69 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index f838cbf5c75..c37f13e0d52 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,15 @@ +2008-07-12 Jie Zhang <jie.zhang@analog.com> + + * elf.c (_bfd_elf_map_sections_to_segments): Don't put + executable sections into the same segment with other + read only sections if --sep-code. + * elf32-bfin.c (elf32_bfin_code_in_l1): New variable. + (elf32_bfin_data_in_l1): New variable. + (elf32_bfin_final_write_processing): New. + (elf32_bfin_special_sections[]): New. + (elf_backend_final_write_processing): Define. + (elf_backend_special_sections): Define. + 2008-07-11 Andreas Schwab <schwab@suse.de> * dwarf2.c (read_section): Take pointer to bfd_size_type instead diff --git a/bfd/elf.c b/bfd/elf.c index d65c78d963a..f066c7ca58c 100644 --- a/bfd/elf.c +++ b/bfd/elf.c @@ -3605,6 +3605,7 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) asection **hdrpp; bfd_boolean phdr_in_segment = TRUE; bfd_boolean writable; + bfd_boolean executable; int tls_count = 0; asection *first_tls = NULL; asection *dynsec, *eh_frame_hdr; @@ -3676,6 +3677,7 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) phdr_index = 0; maxpagesize = bed->maxpagesize; writable = FALSE; + executable = FALSE; dynsec = bfd_get_section_by_name (abfd, ".dynamic"); if (dynsec != NULL && (dynsec->flags & SEC_LOAD) == 0) @@ -3757,6 +3759,14 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) ends precisely on a page boundary. */ new_segment = TRUE; } + else if (info->sep_code + && ((! executable && (hdr->flags & SEC_CODE) != 0) + || (executable && (hdr->flags & SEC_CODE) == 0))) + { + /* We don't want to put a executable section in a non-executable + segment. */ + new_segment = TRUE; + } else { /* Otherwise, we can use the same segment. */ @@ -3771,6 +3781,8 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) { if ((hdr->flags & SEC_READONLY) == 0) writable = TRUE; + if ((hdr->flags & SEC_CODE) != 0) + executable = TRUE; last_hdr = hdr; /* .tbss sections effectively have zero size. */ if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) @@ -3796,6 +3808,11 @@ _bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) else writable = FALSE; + if ((hdr->flags & SEC_CODE) != 0) + executable = TRUE; + else + executable = FALSE; + last_hdr = hdr; /* .tbss sections effectively have zero size. */ if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL) diff --git a/bfd/elf32-bfin.c b/bfd/elf32-bfin.c index f83abd28acc..480feb2d30e 100644 --- a/bfd/elf32-bfin.c +++ b/bfd/elf32-bfin.c @@ -1119,6 +1119,22 @@ bfin_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, return (reloc_howto_type *) NULL; } +/* Set by ld emulation if --code-in-l1. */ +bfd_boolean elf32_bfin_code_in_l1 = 0; + +/* Set by ld emulation if --data-in-l1. */ +bfd_boolean elf32_bfin_data_in_l1 = 0; + +static void +elf32_bfin_final_write_processing (bfd *abfd, + bfd_boolean linker ATTRIBUTE_UNUSED) +{ + if (elf32_bfin_code_in_l1) + elf_elfheader (abfd)->e_flags |= EF_BFIN_CODE_IN_L1; + if (elf32_bfin_data_in_l1) + elf_elfheader (abfd)->e_flags |= EF_BFIN_DATA_IN_L1; +} + /* Return TRUE if the name is a local label. bfin local labels begin with L$. */ static bfd_boolean @@ -5572,6 +5588,14 @@ error_return: free (internal_relocs); return FALSE; } + +struct bfd_elf_special_section const elf32_bfin_special_sections[] = +{ + { ".l1.text", 8, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR }, + { ".l1.data", 8, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, + { NULL, 0, 0, 0, 0 } +}; + #define TARGET_LITTLE_SYM bfd_elf32_bfin_vec #define TARGET_LITTLE_NAME "elf32-bfin" @@ -5618,8 +5642,11 @@ error_return: elf32_bfin_set_private_flags #define bfd_elf32_bfd_print_private_bfd_data \ elf32_bfin_print_private_bfd_data +#define elf_backend_final_write_processing \ + elf32_bfin_final_write_processing #define elf_backend_reloc_type_class elf32_bfin_reloc_type_class #define elf_backend_can_gc_sections 1 +#define elf_backend_special_sections elf32_bfin_special_sections #define elf_backend_can_refcount 1 #define elf_backend_want_got_plt 0 #define elf_backend_plt_readonly 1 diff --git a/include/ChangeLog b/include/ChangeLog index 6a433eafb58..1cc6fc5f7ac 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,3 +1,10 @@ +2008-07-12 Jie Zhang <jie.zhang@analog.com> + + * bfdlink.h (struct bfd_link_info): Add sep_code member + variable. + * elf/bfin.h (EF_BFIN_CODE_IN_L1): Define. + (EF_BFIN_DATA_IN_L1): Define. + 2008-07-07 Stan Shebs <stan@codesourcery.com> * dis-asm.h (struct disassemble_info): Add endian_code field. diff --git a/include/bfdlink.h b/include/bfdlink.h index e6833102839..d22519a1d11 100644 --- a/include/bfdlink.h +++ b/include/bfdlink.h @@ -346,6 +346,9 @@ struct bfd_link_info /* Non-NULL if .note.gnu.build-id section should be created. */ char *emit_note_gnu_build_id; + /* TRUE if putting code into separate segment. */ + unsigned int sep_code: 1; + /* What to do with unresolved symbols in an object file. When producing executables the default is GENERATE_ERROR. When producing shared libraries the default is IGNORE. The diff --git a/include/elf/bfin.h b/include/elf/bfin.h index 3c07cd166c8..523db9b53a3 100644 --- a/include/elf/bfin.h +++ b/include/elf/bfin.h @@ -88,5 +88,8 @@ END_RELOC_NUMBERS (R_max) #define EF_BFIN_PIC 0x00000001 /* -fpic */ #define EF_BFIN_FDPIC 0x00000002 /* -mfdpic */ +#define EF_BFIN_CODE_IN_L1 0x00000010 /* --code-in-l1 */ +#define EF_BFIN_DATA_IN_L1 0x00000020 /* --data-in-l1 */ + #define EF_BFIN_PIC_FLAGS (EF_BFIN_PIC | EF_BFIN_FDPIC) #endif /* _ELF_BFIN_H */ |