+2005-03-04 David Daney <ddaney@avtrex.com>
+
+ * elfxx-mips.c (mips_elf_calculate_relocation): Handle special
+ '__gnu_local_gp' symbol used by gas -mno-shared.
+
2005-03-03 H.J. Lu <hongjiu.lu@intel.com>
* elf-bfd.h (elf_backend_data): Add "const char *" to
bfd_boolean local_p, was_local_p;
/* TRUE if the symbol referred to by this relocation is "_gp_disp". */
bfd_boolean gp_disp_p = FALSE;
+ /* TRUE if the symbol referred to by this relocation is
+ "__gnu_local_gp". */
+ bfd_boolean gnu_local_gp_p = FALSE;
Elf_Internal_Shdr *symtab_hdr;
size_t extsymoff;
unsigned long r_symndx;
gp_disp_p = TRUE;
}
+ /* See if this is the special _gp symbol. Note that such a
+ symbol must always be a global symbol. */
+ else if (strcmp (*namep, "__gnu_local_gp") == 0)
+ gnu_local_gp_p = TRUE;
+
+
/* If this symbol is defined, calculate its address. Note that
_gp_disp is a magic symbol, always implicitly defined by the
linker, so it's inappropriate to check to see whether or not
break;
}
+ if (gnu_local_gp_p)
+ symbol = gp;
+
/* Figure out what kind of relocation is being performed. */
switch (r_type)
{
+2005-03-04 David Daney <ddaney@avtrex.com>
+
+ * config/tc-mips.c (macro_build_lui): Use '__gnu_local_gp'
+ instead of '_gp' for -mno-shared optimization.
+ (s_cpload): Ditto.
+ (s_abicalls): Document it in the comment.
+ (md_show_usage): Document the -mno-shared option.
+
2005-03-04 Richard Sandiford <rsandifo@redhat.com>
* config/tc-mips.c (mips_set_options): Add sym32 field.
else
{
assert (ep->X_op == O_symbol);
- /* _gp_disp is a special case, used from s_cpload. _gp is used
- if mips_no_shared. */
+ /* _gp_disp is a special case, used from s_cpload.
+ __gnu_local_gp is used if mips_no_shared. */
assert (mips_pic == NO_PIC
|| (! HAVE_NEWABI
&& strcmp (S_GET_NAME (ep->X_add_symbol), "_gp_disp") == 0)
|| (! mips_in_shared
- && strcmp (S_GET_NAME (ep->X_add_symbol), "_gp") == 0));
+ && strcmp (S_GET_NAME (ep->X_add_symbol),
+ "__gnu_local_gp") == 0));
*r = BFD_RELOC_HI16_S;
}
The .cpload argument is normally $25 == $t9.
The -mno-shared option changes this to:
- lui $gp,%hi(_gp)
- addiu $gp,$gp,%lo(_gp)
+ lui $gp,%hi(__gnu_local_gp)
+ addiu $gp,$gp,%lo(__gnu_local_gp)
and the argument is ignored. This saves an instruction, but the
resulting code is not position independent; it uses an absolute
- address for _gp. Thus code assembled with -mno-shared can go into
- an ordinary executable, but not into a shared library. */
+ address for __gnu_local_gp. Thus code assembled with -mno-shared
+ can go into an ordinary executable, but not into a shared library. */
static void
s_cpload (int ignore ATTRIBUTE_UNUSED)
in_shared = mips_in_shared || HAVE_64BIT_SYMBOLS;
ex.X_op = O_symbol;
- ex.X_add_symbol = symbol_find_or_make (in_shared ? "_gp_disp" : "_gp");
+ ex.X_add_symbol = symbol_find_or_make (in_shared ? "_gp_disp" :
+ "__gnu_local_gp");
ex.X_op_symbol = NULL;
ex.X_add_number = 0;
-non_shared do not generate position independent code\n\
-xgot assume a 32 bit GOT\n\
-mpdr, -mno-pdr enable/disable creation of .pdr sections\n\
+-mshared, -mno-shared disable/enable .cpload optimization for\n\
+ non-shared code\n\
-mabi=ABI create ABI conformant object file for:\n"));
first = 1;
+2005-03-04 David Daney <ddaney@avtrex.com>
+
+ * gas/mips/elf-rel23b.d: Use '__gnu_local_gp' instead of '_gp'
+ for -mno-shared optimization.
+ * gas/mips/elf-rel25a.d: Ditto.
+
2005-03-04 Nick Clifton <nickc@redhat.com>
* gas/arm/arm.exp: Fix test for running the "undefined" to catch
0+00 <.*>:
.*: 0380282d move \$5,\$28
.*: 3c1c0000 lui \$28,0x0
- .*: R_MIPS_HI16 _gp
+ .*: R_MIPS_HI16 __gnu_local_gp
.*: 279c0000 addiu \$28,\$28,0
- .*: R_MIPS_LO16 _gp
+ .*: R_MIPS_LO16 __gnu_local_gp
.*: 00000000 nop
0+00 <.*>:
.*: 3c1c0000 lui \$28,0x0
- .*: R_MIPS_HI16 _gp
+ .*: R_MIPS_HI16 __gnu_local_gp
.*: 279c0000 addiu \$28,\$28,0
- .*: R_MIPS_LO16 _gp
+ .*: R_MIPS_LO16 __gnu_local_gp
#pass
+2005-03-04 David Daney <ddaney@avtrex.com>
+
+ * ld-mips-elf/multi-got-no-shared-1.s,
+ ld-mips-elf/multi-got-no-shared-2.s,
+ ld-mips-elf/multi-got-no-shared.d: New tests.
+ * ld-mips-elf/mips-elf.exp: Run them.
+
2005-03-02 Daniel Jacobowitz <dan@codesourcery.com>
* ld-mips-elf/tlsbin-o32.s, ld-mips-elf/mips-dyn.ld,
# the "traditional" emulations.
if { $linux_gnu } {
run_dump_test "multi-got-1"
+ run_dump_test "multi-got-no-shared"
}
if $has_newabi {
--- /dev/null
+ .macro one_sym count
+ .globl sym_1_\count
+sym_1_\count:
+ la $2, sym_1_\count
+ .endm
+
+
+ .text
+ .globl func1
+ .ent func1
+func1:
+ .frame $sp,0,$31
+ .set noreorder
+ .cpload $25
+ .set reorder
+ .cprestore 8
+ .set noreorder
+
+ .irp thou,0,1,2,3,4,5,6,7,8
+ .irp hund,0,1,2,3,4,5,6,7,8,9
+ .irp tens,0,1,2,3,4,5,6,7,8,9
+ .irp ones,0,1,2,3,4,5,6,7,8,9
+ one_sym \thou\hund\tens\ones
+ .endr
+ .endr
+ .endr
+ .endr
+
+ .end func1
--- /dev/null
+ .macro one_sym count
+ .globl sym_2_\count
+sym_2_\count:
+ la $2, sym_2_\count
+ .endm
+
+ .text
+ .ent func2
+func2:
+ .frame $sp,0,$31
+ .set noreorder
+ .cpload $25
+ .set reorder
+ .cprestore 8
+ .set noreorder
+
+ .irp thou,0,1,2,3,4,5,6,7,8
+ .irp hund,0,1,2,3,4,5,6,7,8,9
+ .irp tens,0,1,2,3,4,5,6,7,8,9
+ .irp ones,0,1,2,3,4,5,6,7,8,9
+ one_sym \thou\hund\tens\ones
+ .endr
+ .endr
+ .endr
+ .endr
+
+ .end func2
--- /dev/null
+#name: MIPS multi-got-no-shared
+#as: -EB -32 -KPIC -mno-shared
+#source: multi-got-no-shared-1.s
+#source: multi-got-no-shared-2.s
+#ld: -melf32btsmip --entry func1
+#objdump: -D -j .text --prefix-addresses --show-raw-insn
+
+.*: +file format.*
+
+Disassembly of section \.text:
+004000b0 <[^>]*> 3c1c1000 lui gp,0x1000
+004000b4 <[^>]*> 279c7ff0 addiu gp,gp,32752
+004000b8 <[^>]*> afbc0008 sw gp,8\(sp\)
+#...
+00408d60 <[^>]*> 3c1c1002 lui gp,0x1002
+00408d64 <[^>]*> 279c9960 addiu gp,gp,-26272
+00408d68 <[^>]*> afbc0008 sw gp,8\(sp\)
+#pass
projects / external / binutils.git / commitdiff