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sparclite 86x big endian instruction / little endian data support.

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This commit is contained in:
Stan Cox 1998-05-27 01:06:20 +00:00
parent e2cb37fee1
commit fc23c14efc
3 changed files with 71 additions and 5 deletions
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17
bfd/ChangeLog
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@ -1,3 +1,20 @@
Tue May 26 19:37:47 1998 Stan Cox <scox@equinox.cygnus.com>
* elf32-sparc.c (_bfd_sparc_elf_howto_table, sparc_reloc_map,
elf32_sparc_relocate_section): Added R_SPARC_32LE for little
endian data 32 bit relocations.
(elf32_sparc_merge_private_bfd_data): Check if linking little
endian objects with big endian objects.
(elf32_sparc_object_p): Set bfd_mach_sparc_sparclite_le.
(elf32_sparc_final_write_processing): Set EF_SPARC_LEDATA in e_flags.
* libbfd.h (bfd_reloc_code_real_names): Added BFD_RELOC_SPARC_32LE.
* reloc.c: Same.
* cpu-sparc.c (arch_info_struct): Added sparc:sparclite_le
* archures.c (bfd_mach_sparc_sparclite_le): New.
Thu May 21 16:59:28 1998 Nick Clifton <nickc@cygnus.com>
* peicode.h (add_data_entry): Fix precedence of operators in if ()

10
gas/ChangeLog
View file

@ -1,3 +1,13 @@
Tue May 26 19:27:52 1998 Stan Cox <scox@equinox.cygnus.com>
* config/tc-sparc.c (OPTION_LITTLE_ENDIAN_DATA): New.
(md_parse_option): Add for same.
(sparc_md_end): Set bfd_mach_sparc_sparclite_le.
(md_apply_fix3, tc_gen_reloc): Allow BFD_RELOC_SPARC_32LE.
(cons_fix_new_sparc): Added to create BFD_RELOC_SPARC_32LE.
* config/tc-sparc.h (cons_fix_new_sparc): Added.
Thu May 21 15:02:41 1998 Nick Clifton <nickc@cygnus.com>
* config/tc-arm.c (find_real_start): Relax definition of local

49
gas/config/tc-sparc.c
View file

@ -92,6 +92,8 @@ static int enforce_aligned_data;
extern int target_big_endian;
static int target_little_endian_data;
/* V9 and 86x have big and little endian data, but instructions are always big
endian. The sparclet has bi-endian support but both data and insns have
the same endianness. Global `target_big_endian' is used for data.
@ -389,6 +391,8 @@ struct option md_longopts[] = {
#endif
#define OPTION_ENFORCE_ALIGNED_DATA (OPTION_MD_BASE + 10)
{"enforce-aligned-data", no_argument, NULL, OPTION_ENFORCE_ALIGNED_DATA},
#define OPTION_LITTLE_ENDIAN_DATA (OPTION_MD_BASE + 11)
{"little-endian-data", no_argument, NULL, OPTION_LITTLE_ENDIAN_DATA},
{NULL, no_argument, NULL, 0}
};
size_t md_longopts_size = sizeof(md_longopts);
@ -454,11 +458,16 @@ md_parse_option (c, arg)
#ifdef SPARC_BIENDIAN
case OPTION_LITTLE_ENDIAN:
target_big_endian = 0;
if (default_arch_type != sparc86x
&& default_arch_type != sparclet
&& default_arch_type != v9)
if (default_arch_type != sparclet)
as_fatal ("This target does not support -EL");
break;
case OPTION_LITTLE_ENDIAN_DATA:
target_little_endian_data = 1;
target_big_endian = 0;
if (default_arch_type != sparc86x
&& default_arch_type != v9)
as_fatal ("This target does not support --little-endian-data");
break;
case OPTION_BIG_ENDIAN:
target_big_endian = 1;
break;
@ -593,7 +602,9 @@ md_show_usage (stream)
#ifdef SPARC_BIENDIAN
fprintf (stream, _("\
-EL generate code for a little endian machine\n\
-EB generate code for a big endian machine\n"));
-EB generate code for a big endian machine\n\
--little-endian-data generate code for a machine having big endian
instructions and little endian data."));
#endif
}
@ -755,6 +766,8 @@ sparc_md_end ()
bfd_set_arch_mach (stdoutput, bfd_arch_sparc, bfd_mach_sparc_v8plusa);
else if (current_architecture == SPARC_OPCODE_ARCH_SPARCLET)
bfd_set_arch_mach (stdoutput, bfd_arch_sparc, bfd_mach_sparc_sparclet);
else if (default_arch_type == sparc86x && target_little_endian_data)
bfd_set_arch_mach (stdoutput, bfd_arch_sparc, bfd_mach_sparc_sparclite_le);
else
{
/* The sparclite is treated like a normal sparc. Perhaps it shouldn't
@ -2540,7 +2553,8 @@ md_apply_fix3 (fixP, value, segment)
{
md_number_to_chars (buf, val, 2);
}
else if (fixP->fx_r_type == BFD_RELOC_32)
else if (fixP->fx_r_type == BFD_RELOC_32
|| fixP->fx_r_type == BFD_RELOC_SPARC_32LE)
{
md_number_to_chars (buf, val, 4);
}
@ -2778,6 +2792,7 @@ tc_gen_reloc (section, fixp)
case BFD_RELOC_SPARC_L44:
case BFD_RELOC_SPARC_HIX22:
case BFD_RELOC_SPARC_LOX10:
case BFD_RELOC_SPARC_32LE:
code = fixp->fx_r_type;
break;
default:
@ -3420,3 +3435,27 @@ sparc_elf_final_processing ()
elf_elfheader (stdoutput)->e_flags |= EF_SPARC_SUN_US1;
}
#endif
/* This is called by emit_expr via TC_CONS_FIX_NEW when creating a
reloc for a cons. We could use the definition there, except that
we want to handle little endian relocs specially. */
void
cons_fix_new_sparc (frag, where, nbytes, exp)
fragS *frag;
int where;
unsigned int nbytes;
expressionS *exp;
{
bfd_reloc_code_real_type r;
r = (nbytes == 1 ? BFD_RELOC_8 :
(nbytes == 2 ? BFD_RELOC_16 :
(nbytes == 4 ? BFD_RELOC_32 : BFD_RELOC_64)));
#ifdef OBJ_ELF
if (target_little_endian_data && nbytes == 4)
r = BFD_RELOC_SPARC_32LE;
#endif
fix_new_exp (frag, where, (int) nbytes, exp, 0, r);
}