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Add ARM ELF private flags

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This commit is contained in:
Nick Clifton 1998-08-05 22:52:27 +00:00
parent 43607f2c1e
commit 0e7361bcd5
2 changed files with 229 additions and 4 deletions
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8
bfd/ChangeLog
View file

@ -1,3 +1,11 @@
Wed Aug 5 15:48:08 1998 Nick Clifton <nickc@cygnus.com>
* elf32-arm.c: Add private flags to ELF header.
(elf32_arm_print_private_bfd_data): New Function.
(elf32_arm_set_private_flags): New Function.
(elf32_arm_copy_private_flags): New Function.
(elf32_arm_merge_private_bfd_data): New Function.
Mon Aug 3 17:10:15 1998 Ian Lance Taylor <ian@cygnus.com>
* elf32-sparc.c (elf32_sparc_check_relocs): Permit WPLT30 against

225
bfd/elf32-arm.c
View file

@ -29,6 +29,14 @@ static reloc_howto_type *elf32_arm_reloc_type_lookup
PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
static void elf32_arm_info_to_howto
PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
static boolean elf32_arm_set_private_flags
PARAMS ((bfd *, flagword));
static boolean elf32_arm_copy_private_bfd_data
PARAMS ((bfd *, bfd *));
static boolean elf32_arm_merge_private_bfd_data
PARAMS ((bfd *, bfd *));
static boolean elf32_arm_print_private_bfd_data
PARAMS ((bfd *, PTR));
#define USE_RELA
#define TARGET_UNDERSCORE '_'
@ -653,6 +661,211 @@ elf32_arm_relocate_section (output_bfd, info, input_bfd, input_section,
return true;
}
/* Function to keep ARM specific flags in the ELF header. */
static boolean
elf32_arm_set_private_flags (abfd, flags)
bfd * abfd;
flagword flags;
{
if (elf_flags_init (abfd)
&& elf_elfheader (abfd)->e_flags != flags)
{
if (flags & EF_INTERWORK)
_bfd_error_handler (_("\
Warning: Not setting interwork flag of %s since it has already been specified as non-interworking"),
bfd_get_filename (abfd));
else
_bfd_error_handler (_("\
Warning: Clearing the interwork flag of %s due to outside request"),
bfd_get_filename (abfd));
}
else
{
elf_elfheader (abfd)->e_flags = flags;
elf_flags_init (abfd) = true;
}
return true;
}
/* Copy backend specific data from one object module to another */
static boolean
elf32_arm_copy_private_bfd_data (ibfd, obfd)
bfd * ibfd;
bfd * obfd;
{
flagword in_flags;
flagword out_flags;
if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
return true;
in_flags = elf_elfheader (ibfd)->e_flags;
out_flags = elf_elfheader (obfd)->e_flags;
if (elf_flags_init (obfd) && in_flags != out_flags)
{
/* Cannot mix PIC and non-PIC code. */
if ((in_flags & EF_PIC) != (out_flags & EF_PIC))
return false;
/* Cannot mix APCS26 and APCS32 code. */
if ((in_flags & EF_APCS_26) != (out_flags & EF_APCS_26))
return false;
/* Cannot mix float APCS and non-float APCS code. */
if ((in_flags & EF_APCS_FLOAT) != (out_flags & EF_APCS_FLOAT))
return false;
/* If the src and dest have different interworking flags
then turn off the interworking bit. */
if ((in_flags & EF_INTERWORK) != (out_flags & EF_INTERWORK))
{
if (out_flags & EF_INTERWORK)
_bfd_error_handler (_("\
Warning: Clearing the interwork flag in %s because non-interworking code in %s has been linked with it"),
bfd_get_filename (obfd), bfd_get_filename (ibfd));
in_flags &= ~ EF_INTERWORK;
}
}
elf_elfheader (obfd)->e_flags = in_flags;
elf_flags_init (obfd) = true;
return true;
}
/* Merge backend specific data from an object file to the output
object file when linking. */
static boolean
elf32_arm_merge_private_bfd_data (ibfd, obfd)
bfd * ibfd;
bfd * obfd;
{
flagword out_flags;
flagword in_flags;
if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
return true;
/* The input BFD must have had its flags initialised. */
BFD_ASSERT (elf_flags_init (ibfd));
in_flags = elf_elfheader (ibfd)->e_flags;
out_flags = elf_elfheader (obfd)->e_flags;
if (! elf_flags_init (obfd))
{
/* If the input is the default architecture then do not
bother setting the flags for the output architecture,
instead allow future merges to do this. If no future
merges ever set these flags then they will retain their
unitialised values, which surprise surprise, correspond
to the default values. */
if (bfd_get_arch_info (ibfd)->the_default)
return true;
elf_flags_init (obfd) = true;
elf_elfheader (obfd)->e_flags = in_flags;
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
&& bfd_get_arch_info (obfd)->the_default)
return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
return true;
}
/* Check flag compatibility. */
if (in_flags == out_flags)
return true;
/* Complain about various flag mismatches. */
if ((in_flags & EF_APCS_26) != (out_flags & EF_APCS_26))
_bfd_error_handler (_("\
Error: %s compiled for APCS-%d, whereas %s is compiled for APCS-%d"),
bfd_get_filename (ibfd),
in_flags & EF_APCS_26 ? 26 : 32,
bfd_get_filename (obfd),
out_flags & EF_APCS_26 ? 26 : 32);
if ((in_flags & EF_APCS_FLOAT) != (out_flags & EF_APCS_FLOAT))
_bfd_error_handler (_("\
Error: %s passes floats in %s registers, whereas %s passes them in %s registers"),
bfd_get_filename (ibfd),
in_flags & EF_APCS_FLOAT ? _("float") : _("integer"),
bfd_get_filename (obfd),
out_flags & EF_APCS_26 ? _("float") : _("integer"));
if ((in_flags & EF_PIC) != (out_flags & EF_PIC))
_bfd_error_handler (_("\
Error: %s is compiled as position %s code, whereas %s is not"),
bfd_get_filename (ibfd),
in_flags & EF_PIC ? _("independent") : _("dependent"),
bfd_get_filename (obfd));
/* Interworking mismatch is only a warning. */
if ((in_flags & EF_INTERWORK) != (out_flags & EF_INTERWORK))
{
_bfd_error_handler (_("\
Warning: %s %s interworking, whereas %s %s"),
bfd_get_filename (ibfd),
in_flags & EF_INTERWORK ? _("supports") : _("does not support"),
bfd_get_filename (obfd),
out_flags & EF_INTERWORK ? _("does not") : _("does"));
return true;
}
return false;
}
/* Display the flags field */
static boolean
elf32_arm_print_private_bfd_data (abfd, ptr)
bfd * abfd;
PTR ptr;
{
FILE * file = (FILE *) ptr;
BFD_ASSERT (abfd != NULL && ptr != NULL);
/* Print normal ELF private data. */
_bfd_elf_print_private_bfd_data (abfd, ptr);
/* Ignore init flag - it may not be set, despite the flags field containing valid data. */
/* xgettext:c-format */
fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
if (elf_elfheader (abfd)->e_flags & EF_INTERWORK)
fprintf (file, _(" [interworking enabled]"));
else
fprintf (file, _(" [interworking not enabled]"));
if (elf_elfheader (abfd)->e_flags & EF_APCS_26)
fprintf (file, _(" [APCS-26]"));
else
fprintf (file, _(" [APCS-32]"));
if (elf_elfheader (abfd)->e_flags & EF_APCS_FLOAT)
fprintf (file, _(" [floats passed in float registers]"));
else
fprintf (file, _(" [floats passed in intgere registers]"));
if (elf_elfheader (abfd)->e_flags & EF_PIC)
fprintf (file, _(" [position independent]"));
else
fprintf (file, _(" [absolute position]"));
fputc ('\n', file);
return true;
}
#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
#define TARGET_LITTLE_NAME "elf32-littlearm"
#define TARGET_BIG_SYM bfd_elf32_bigarm_vec
@ -660,10 +873,14 @@ elf32_arm_relocate_section (output_bfd, info, input_bfd, input_section,
#define ELF_ARCH bfd_arch_arm
#define ELF_MACHINE_CODE EM_ARM
#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
#define elf_info_to_howto elf32_arm_info_to_howto
#define elf_info_to_howto_rel 0
#define elf_backend_relocate_section elf32_arm_relocate_section
#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
#define elf_info_to_howto elf32_arm_info_to_howto
#define elf_info_to_howto_rel 0
#define elf_backend_relocate_section elf32_arm_relocate_section
#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
#define elf_symbol_leading_char '_'