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Don't use "_gp" on RISC-V, use "_global_pointer$" instead

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"_gp" could conflict with ABI-complient code.  While it's probably OK
because MIPS uses this name, we figured it'd be good to clean this up
before a release with RISC-V in it.

ld/ChangeLog:

2017-02-13  Palmer Dabbelt  <palmer@dabbelt.com>

        * emulparams/elf32lriscv-defs.sh (SDATA_START_SYMBOLS): Change
        _gp to __global_pointer$.

bfd/ChangeLog:

2017-02-13  Palmer Dabbelt  <palmer@dabbelt.com>

        * elfnn-riscv.c (riscv_global_pointer_value): Change _gp to
        __global_pointer$.
This commit is contained in:
Palmer Dabbelt 2017-02-08 11:26:07 -08:00
parent d11135f552
commit 10ddfe62f8
4 changed files with 12 additions and 2 deletions
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5
bfd/ChangeLog
View File

@ -1,3 +1,8 @@
2017-02-13 Palmer Dabbelt <palmer@dabbelt.com>
* elfnn-riscv.c (riscv_global_pointer_value): Change _gp to
__global_pointer$.
2017-02-13 Nick Clifton <nickc@redhat.com>
PR binutils/21151

2
bfd/elfnn-riscv.c
View File

@ -1463,7 +1463,7 @@ riscv_global_pointer_value (struct bfd_link_info *info)
{
struct bfd_link_hash_entry *h;
h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
h = bfd_link_hash_lookup (info->hash, "__global_pointer$", FALSE, FALSE, TRUE);
if (h == NULL || h->type != bfd_link_hash_defined)
return 0;

5
ld/ChangeLog
View File

@ -1,3 +1,8 @@
2017-02-13 Palmer Dabbelt <palmer@dabbelt.com>
* emulparams/elf32lriscv-defs.sh (SDATA_START_SYMBOLS): Change
_gp to __global_pointer$
2017-02-08 Andrew Burgess <andrew.burgess@embecosm.com>
* configure.tgt (arc*-*-linux*): Change the default linker

2
ld/emulparams/elf32lriscv-defs.sh
View File

@ -23,7 +23,7 @@ TEXT_START_ADDR=0x10000
MAXPAGESIZE="CONSTANT (MAXPAGESIZE)"
COMMONPAGESIZE="CONSTANT (COMMONPAGESIZE)"
SDATA_START_SYMBOLS="_gp = . + 0x800;
SDATA_START_SYMBOLS="__global_pointer$ = . + 0x800;
*(.srodata.cst16) *(.srodata.cst8) *(.srodata.cst4) *(.srodata.cst2) *(.srodata .srodata.*)"
INITIAL_READONLY_SECTIONS=".interp : { *(.interp) } ${CREATE_PIE-${INITIAL_READONLY_SECTIONS}}"