From 7f8d5fc90bf3c799976edffa902e03edf1455061 Mon Sep 17 00:00:00 2001 From: Ian Lance Taylor Date: Sun, 13 Feb 2000 22:45:29 +0000 Subject: [PATCH] * section.c (_bfd_strip_section_from_output): Add info parameter. If it passed as non-NULL, use it to check whether any input BFD has an input section which uses this output section. Change all callers. * bfd-in2.h: Rebuild. * bfd-in.h: Move declarations of bfd_get_elf_phdr_upper_bound and bfd_get_elf_phdrs in from bfd-in2.h, correcting patch of 1999-11-29. * bfd-in2.h: Rebuild. --- bfd/ChangeLog | 13 +++++++++++++ bfd/bfd-in.h | 14 ++++++++++++++ bfd/bfd-in2.h | 42 ++++++++++++++++++++---------------------- bfd/elf32-i386.c | 2 +- bfd/elf32-m68k.c | 2 +- bfd/elf32-mips.c | 2 +- bfd/elf32-ppc.c | 2 +- bfd/elf32-sparc.c | 2 +- bfd/elf64-alpha.c | 2 +- bfd/elf64-sparc.c | 2 +- bfd/elflink.h | 6 +++--- bfd/section.c | 40 ++++++++++++++++++++++++++++++++++------ 12 files changed, 91 insertions(+), 38 deletions(-) diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 1fd998b..1b629ea 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,16 @@ +2000-02-13 Ian Lance Taylor + + * section.c (_bfd_strip_section_from_output): Add info parameter. + If it passed as non-NULL, use it to check whether any input BFD + has an input section which uses this output section. Change all + callers. + * bfd-in2.h: Rebuild. + + * bfd-in.h: Move declarations of bfd_get_elf_phdr_upper_bound and + bfd_get_elf_phdrs in from bfd-in2.h, correcting patch of + 1999-11-29. + * bfd-in2.h: Rebuild. + 2000-02-10 Timothy Wall * coffswap.h (coff_swap_sym_in): Add hook SWAP_SYM_IN_POST to diff --git a/bfd/bfd-in.h b/bfd/bfd-in.h index b5ff7dd..a5312f4 100644 --- a/bfd/bfd-in.h +++ b/bfd/bfd-in.h @@ -626,6 +626,20 @@ extern boolean bfd_elf64_size_dynamic_sections extern void bfd_elf_set_dt_needed_name PARAMS ((bfd *, const char *)); extern const char *bfd_elf_get_dt_soname PARAMS ((bfd *)); +/* Return an upper bound on the number of bytes required to store a + copy of ABFD's program header table entries. Return -1 if an error + occurs; bfd_get_error will return an appropriate code. */ +extern long bfd_get_elf_phdr_upper_bound PARAMS ((bfd *abfd)); + +/* Copy ABFD's program header table entries to *PHDRS. The entries + will be stored as an array of Elf_Internal_Phdr structures, as + defined in include/elf/internal.h. To find out how large the + buffer needs to be, call bfd_get_elf_phdr_upper_bound. + + Return the number of program header table entries read, or -1 if an + error occurs; bfd_get_error will return an appropriate code. */ +extern int bfd_get_elf_phdrs PARAMS ((bfd *abfd, void *phdrs)); + /* SunOS shared library support routines for the linker. */ extern struct bfd_link_needed_list *bfd_sunos_get_needed_list diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h index 9db6ec6..7ec5d70 100644 --- a/bfd/bfd-in2.h +++ b/bfd/bfd-in2.h @@ -626,6 +626,20 @@ extern boolean bfd_elf64_size_dynamic_sections extern void bfd_elf_set_dt_needed_name PARAMS ((bfd *, const char *)); extern const char *bfd_elf_get_dt_soname PARAMS ((bfd *)); +/* Return an upper bound on the number of bytes required to store a + copy of ABFD's program header table entries. Return -1 if an error + occurs; bfd_get_error will return an appropriate code. */ +extern long bfd_get_elf_phdr_upper_bound PARAMS ((bfd *abfd)); + +/* Copy ABFD's program header table entries to *PHDRS. The entries + will be stored as an array of Elf_Internal_Phdr structures, as + defined in include/elf/internal.h. To find out how large the + buffer needs to be, call bfd_get_elf_phdr_upper_bound. + + Return the number of program header table entries read, or -1 if an + error occurs; bfd_get_error will return an appropriate code. */ +extern int bfd_get_elf_phdrs PARAMS ((bfd *abfd, void *phdrs)); + /* SunOS shared library support routines for the linker. */ extern struct bfd_link_needed_list *bfd_sunos_get_needed_list @@ -1084,7 +1098,7 @@ typedef struct sec target). In most cases, if this was going to start at the 100th octet (8-bit quantity) in the output section, this value would be 100. However, if the target byte size is 16 bits - (bfd_octets_per_byte is "2"), this value would be 50. */ + (bfd_octets_per_byte is "2"), this value would be 50. */ bfd_vma output_offset; @@ -1254,7 +1268,7 @@ bfd_copy_private_section_data PARAMS ((bfd *ibfd, asection *isec, bfd *obfd, ase (ibfd, isection, obfd, osection)) void _bfd_strip_section_from_output - PARAMS ((asection *section)); + PARAMS ((struct bfd_link_info *info, asection *section)); enum bfd_architecture { @@ -1379,7 +1393,7 @@ enum bfd_architecture bfd_arch_mn10200, /* Matsushita MN10200 */ bfd_arch_mn10300, /* Matsushita MN10300 */ #define bfd_mach_mn10300 300 -#define bfd_mach_am33 330 +#define bfd_mach_am33 330 bfd_arch_fr30, #define bfd_mach_fr30 0x46523330 bfd_arch_mcore, @@ -1454,7 +1468,7 @@ bfd_octets_per_byte PARAMS ((bfd *abfd)); int bfd_arch_mach_octets_per_byte PARAMS ((enum bfd_architecture arch, - unsigned long machine)); + unsigned long machine)); typedef enum bfd_reloc_status { @@ -2433,8 +2447,8 @@ bfd_print_symbol_vandf PARAMS ((PTR file, asymbol *symbol)); int bfd_decode_symclass PARAMS ((asymbol *symbol)); -boolean -bfd_is_undefined_symclass PARAMS ((int symclass)); +boolean +bfd_is_undefined_symclass PARAMS ((int symclass)); void bfd_symbol_info PARAMS ((asymbol *symbol, symbol_info *ret)); @@ -3105,22 +3119,6 @@ bfd_set_format PARAMS ((bfd *abfd, bfd_format format)); CONST char * bfd_format_string PARAMS ((bfd_format format)); - -/* Return an upper bound on the number of bytes required to store a - copy of ABFD's program header table entries. Return -1 if an error - occurs; bfd_get_error will return an appropriate code. */ -extern long bfd_get_elf_phdr_upper_bound PARAMS ((bfd *abfd)); - -/* Copy ABFD's program header table entries to *PHDRS. The entries - will be stored as an array of Elf_Internal_Phdr structures, as - defined in include/elf/internal.h. To find out how large the - buffer needs to be, call bfd_get_elf_phdr_upper_bound. - - Return the number of program header table entries read, or -1 if an - error occurs; bfd_get_error will return an appropriate code. */ -extern int bfd_get_elf_phdrs PARAMS ((bfd *abfd, void *phdrs)); - - #ifdef __cplusplus } #endif diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c index 33514ac..0894476 100644 --- a/bfd/elf32-i386.c +++ b/bfd/elf32-i386.c @@ -1085,7 +1085,7 @@ elf_i386_size_dynamic_sections (output_bfd, info) if (strip) { - _bfd_strip_section_from_output (s); + _bfd_strip_section_from_output (info, s); continue; } diff --git a/bfd/elf32-m68k.c b/bfd/elf32-m68k.c index c87ec7a..06ba12c 100644 --- a/bfd/elf32-m68k.c +++ b/bfd/elf32-m68k.c @@ -1262,7 +1262,7 @@ elf_m68k_size_dynamic_sections (output_bfd, info) if (strip) { - _bfd_strip_section_from_output (s); + _bfd_strip_section_from_output (info, s); continue; } diff --git a/bfd/elf32-mips.c b/bfd/elf32-mips.c index 6db9c23..d9832b6 100644 --- a/bfd/elf32-mips.c +++ b/bfd/elf32-mips.c @@ -7920,7 +7920,7 @@ _bfd_mips_elf_size_dynamic_sections (output_bfd, info) if (strip) { - _bfd_strip_section_from_output (s); + _bfd_strip_section_from_output (info, s); continue; } diff --git a/bfd/elf32-ppc.c b/bfd/elf32-ppc.c index 1de197b..7c5f589 100644 --- a/bfd/elf32-ppc.c +++ b/bfd/elf32-ppc.c @@ -2012,7 +2012,7 @@ ppc_elf_size_dynamic_sections (output_bfd, info) if (strip) { - _bfd_strip_section_from_output (s); + _bfd_strip_section_from_output (info, s); continue; } diff --git a/bfd/elf32-sparc.c b/bfd/elf32-sparc.c index 979d25b..bf34782 100644 --- a/bfd/elf32-sparc.c +++ b/bfd/elf32-sparc.c @@ -1010,7 +1010,7 @@ elf32_sparc_size_dynamic_sections (output_bfd, info) if (strip) { - _bfd_strip_section_from_output (s); + _bfd_strip_section_from_output (info, s); continue; } diff --git a/bfd/elf64-alpha.c b/bfd/elf64-alpha.c index 3a14bcc..a21d1b9 100644 --- a/bfd/elf64-alpha.c +++ b/bfd/elf64-alpha.c @@ -3263,7 +3263,7 @@ elf64_alpha_size_dynamic_sections (output_bfd, info) } if (strip) - _bfd_strip_section_from_output (s); + _bfd_strip_section_from_output (info, s); else { /* Allocate memory for the section contents. */ diff --git a/bfd/elf64-sparc.c b/bfd/elf64-sparc.c index b027897..5ea95e9 100644 --- a/bfd/elf64-sparc.c +++ b/bfd/elf64-sparc.c @@ -1752,7 +1752,7 @@ sparc64_elf_size_dynamic_sections (output_bfd, info) if (strip) { - _bfd_strip_section_from_output (s); + _bfd_strip_section_from_output (info, s); continue; } diff --git a/bfd/elflink.h b/bfd/elflink.h index f15c693..ce71d94 100644 --- a/bfd/elflink.h +++ b/bfd/elflink.h @@ -2981,7 +2981,7 @@ NAME(bfd_elf,size_dynamic_sections) (output_bfd, soname, rpath, verdefs = asvinfo.verdefs; if (verdefs == NULL) - _bfd_strip_section_from_output (s); + _bfd_strip_section_from_output (info, s); else { unsigned int cdefs; @@ -3157,7 +3157,7 @@ NAME(bfd_elf,size_dynamic_sections) (output_bfd, soname, rpath, (PTR) &sinfo); if (elf_tdata (output_bfd)->verref == NULL) - _bfd_strip_section_from_output (s); + _bfd_strip_section_from_output (info, s); else { Elf_Internal_Verneed *t; @@ -3261,7 +3261,7 @@ NAME(bfd_elf,size_dynamic_sections) (output_bfd, soname, rpath, if (dynsymcount == 0 || (verdefs == NULL && elf_tdata (output_bfd)->verref == NULL)) { - _bfd_strip_section_from_output (s); + _bfd_strip_section_from_output (info, s); /* The DYNSYMCOUNT might have changed if we were going to output a dynamic symbol table entry for S. */ dynsymcount = _bfd_elf_link_renumber_dynsyms (output_bfd, info); diff --git a/bfd/section.c b/bfd/section.c index c0bf60d..6e50d16 100644 --- a/bfd/section.c +++ b/bfd/section.c @@ -1100,20 +1100,28 @@ FUNCTION SYNOPSIS void _bfd_strip_section_from_output - (asection *section); + (struct bfd_link_info *info, asection *section); DESCRIPTION - Remove @var{section} from the output. If the output section becomes - empty, remove it from the output bfd. + Remove @var{section} from the output. If the output section + becomes empty, remove it from the output bfd. @var{info} may + be NULL; if it is not, it is used to decide whether the output + section is empty. */ void -_bfd_strip_section_from_output (s) +_bfd_strip_section_from_output (info, s) + struct bfd_link_info *info; asection *s; { asection **spp, *os; struct bfd_link_order *p, *pp; + boolean keep_os; - /* Excise the input section from the link order. */ + /* Excise the input section from the link order. + + FIXME: For all calls that I can see to this function, the link + orders have not yet been set up. So why are we checking them? -- + Ian */ os = s->output_section; for (p = os->link_order_head, pp = NULL; p != NULL; pp = p, p = p->next) if (p->type == bfd_indirect_link_order @@ -1128,10 +1136,30 @@ _bfd_strip_section_from_output (s) break; } + keep_os = os->link_order_head != NULL; + + if (! keep_os && info != NULL) + { + bfd *abfd; + for (abfd = info->input_bfds; abfd != NULL; abfd = abfd->link_next) + { + asection *is; + for (is = abfd->sections; is != NULL; is = is->next) + { + if (is != s && is->output_section == os) + break; + } + if (is != NULL) + break; + } + if (abfd != NULL) + keep_os = true; + } + /* If the output section is empty, remove it too. Careful about sections that have been discarded in the link script -- they are mapped to bfd_abs_section, which has no owner. */ - if (!os->link_order_head && os->owner) + if (!keep_os && os->owner != NULL) { for (spp = &os->owner->sections; *spp; spp = &(*spp)->next) if (*spp == os) -- 2.7.4