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csky: Support PC relative diff relocation

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Define DIFF_EXPR_OK to Support PC relative diff relocation,
and add CKCORE_PCREL32 relocation process

bfd/
        * elf32-csky.c (csky_elf_howto_table): Fill special_function of
        R_CKCORE_PCREL32.
        (csky_elf_relocate_section): Add R_CKCORE_PCREL32 process.
gas/
        * config/tc-csky.c (md_apply_fix): Transmit
        BFD_RELOC_32_PCREL to BFD_RELOC_CKCORE_PCREL32.
        (tc_gen_reloc): Trasmit BFD_RELOC_CKCORE_ADDR32 to
        BFD_RELOC_CKCORE_PCREL32 while pc-relative.
        * config/tc-csky.h (DIFF_EXPR_OK): Define to enable PC relative
        diff relocs.
This commit is contained in:
Lifang Xia 2018-09-14 21:02:51 +08:00
parent 87b240d485
commit fe75f42ee1
5 changed files with 30 additions and 1 deletions
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6
bfd/ChangeLog
View File

@ -1,3 +1,9 @@
2018-09-14 Lifang Xia <lifang_xia@c-sky.com>
* elf32-csky.c (csky_elf_howto_table): Fill special_function of
R_CKCORE_PCREL32.
(csky_elf_relocate_section): Add R_CKCORE_PCREL32 process.
2018-09-14 Alan Modra <amodra@gmail.com>
PR 23425

7
bfd/elf32-csky.c
View File

@ -150,7 +150,7 @@ static reloc_howto_type csky_elf_howto_table[] =
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
NULL, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_CKCORE_PCREL32", /* name */
FALSE, /* partial_inplace */
0x0, /* src_mask */
@ -4307,6 +4307,10 @@ csky_elf_relocate_section (bfd * output_bfd,
if (h == NULL && (addend & 0x80000000))
addend &= 0xffffffff;
break;
case R_CKCORE_PCREL32:
break;
case R_CKCORE_GOT12:
case R_CKCORE_PLT12:
case R_CKCORE_GOT_HI16:
@ -5027,6 +5031,7 @@ csky_elf_relocate_section (bfd * output_bfd,
if (howto->size == 2
&& (howto->type == R_CKCORE_ADDR32
|| howto->type == R_CKCORE_PCREL32
|| howto->type == R_CKCORE_GOT32
|| howto->type == R_CKCORE_GOTOFF
|| howto->type == R_CKCORE_GOTPC

9
gas/ChangeLog
View File

@ -1,3 +1,12 @@
2018-09-10 Lifang Xia <lifang_xia@c-sky.com>
* config/tc-csky.c (md_apply_fix): Transmit BFD_RELOC_32_PCREL to
BFD_RELOC_CKCORE_PCREL32.
(tc_gen_reloc): Trasmit BFD_RELOC_CKCORE_ADDR32 to
BFD_RELOC_CKCORE_PCREL32 while pc-relative.
* config/tc-csky.h (DIFF_EXPR_OK): Define to enable PC relative diff
relocs.
2018-09-14 Jan Beulich <jbeulich@suse.com>
* config/tc-i386.c (process_suffix): Simplify CRC32 special

6
gas/config/tc-csky.c
View File

@ -4920,7 +4920,9 @@ md_apply_fix (fixS *fixP,
/* We can handle these relocs. */
switch (fixP->fx_r_type)
{
case BFD_RELOC_32_PCREL:
case BFD_RELOC_CKCORE_PCREL32:
fixP->fx_r_type = BFD_RELOC_CKCORE_PCREL32;
break;
case BFD_RELOC_VTABLE_INHERIT:
fixP->fx_r_type = BFD_RELOC_CKCORE_GNU_VTINHERIT;
@ -5133,6 +5135,10 @@ tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixP)
{
arelent *rel;
if (fixP->fx_pcrel
&& fixP->fx_r_type == BFD_RELOC_CKCORE_ADDR32)
fixP->fx_r_type = BFD_RELOC_CKCORE_PCREL32;
rel = xmalloc (sizeof (arelent));
rel->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
*rel->sym_ptr_ptr = symbol_get_bfdsym (fixP->fx_addsy);

3
gas/config/tc-csky.h
View File

@ -62,6 +62,9 @@
#define DWARF2_DEFAULT_RETURN_COLUMN 15
#define DWARF2_CIE_DATA_ALIGNMENT (-4)
/* .-foo gets turned into PC relative relocs. */
#define DIFF_EXPR_OK 1
typedef enum
{
MAP_UNDEFINED = 0,