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RISC-V: Pc-rel to gp-rel relaxation function cleanup.

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bfd/
	* elfnn-riscv.c (riscv_init_pcgp_relocs): Add explanatory comment.
	(riscv_free_pcgp_relocs, riscv_record_pcgp_reloc): Likewise.
	(riscv_find_pcgp_hi_reloc, riscv_reocrd_pcgp_lo_reloc): Likewise.
	(riscv_find_pcgp_lo_reloc): Likewise.
	(riscv_delete_pcgp_hi_reloc, riscv_use_pcgp_hi_reloc): Delete.
	(riscv_delete_pcgp_lo_reloc): Likewise.
	(_bfd_riscv_relax_pc): Don't call riscv_use_pcgp_hi_reloc. Replace
	calls to riscv_delete_pcgp_lo_reloc and riscv_delete_pcgp_hi_reloc
	with TRUE.  Mark abfd arg as ATTRIBUTE_UNUSED.
This commit is contained in:
Jim Wilson 2018-09-27 17:16:34 -07:00
parent fec3f4ea46
commit 5f9aecea0d
2 changed files with 32 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
bfd/ChangeLog
View File

@ -1,3 +1,15 @@
2018-09-27 Jim Wilson <jimw@sifive.com>
* elfnn-riscv.c (riscv_init_pcgp_relocs): Add explanatory comment.
(riscv_free_pcgp_relocs, riscv_record_pcgp_reloc): Likewise.
(riscv_find_pcgp_hi_reloc, riscv_reocrd_pcgp_lo_reloc): Likewise.
(riscv_find_pcgp_lo_reloc): Likewise.
(riscv_delete_pcgp_hi_reloc, riscv_use_pcgp_hi_reloc): Delete.
(riscv_delete_pcgp_lo_reloc): Likewise.
(_bfd_riscv_relax_pc): Don't call riscv_use_pcgp_hi_reloc. Replace
calls to riscv_delete_pcgp_lo_reloc and riscv_delete_pcgp_hi_reloc
with TRUE. Mark abfd arg as ATTRIBUTE_UNUSED.
2018-09-25 Jim Wilson <jimw@sifive.com>
* elfnn-riscv.c (riscv_make_plt_header): New arg output_bfd. Change

62
bfd/elfnn-riscv.c
View File

@ -2830,6 +2830,8 @@ typedef struct
riscv_pcgp_lo_reloc *lo;
} riscv_pcgp_relocs;
/* Initialize the pcgp reloc info in P. */
static bfd_boolean
riscv_init_pcgp_relocs (riscv_pcgp_relocs *p)
{
@ -2838,6 +2840,8 @@ riscv_init_pcgp_relocs (riscv_pcgp_relocs *p)
return TRUE;
}
/* Free the pcgp reloc info in P. */
static void
riscv_free_pcgp_relocs (riscv_pcgp_relocs *p,
bfd *abfd ATTRIBUTE_UNUSED,
@ -2861,6 +2865,10 @@ riscv_free_pcgp_relocs (riscv_pcgp_relocs *p,
}
}
/* Record pcgp hi part reloc info in P, using HI_SEC_OFF as the lookup index.
The HI_ADDEND, HI_ADDR, HI_SYM, and SYM_SEC args contain info required to
relax the corresponding lo part reloc. */
static bfd_boolean
riscv_record_pcgp_hi_reloc (riscv_pcgp_relocs *p, bfd_vma hi_sec_off,
bfd_vma hi_addend, bfd_vma hi_addr,
@ -2879,6 +2887,9 @@ riscv_record_pcgp_hi_reloc (riscv_pcgp_relocs *p, bfd_vma hi_sec_off,
return TRUE;
}
/* Look up hi part pcgp reloc info in P, using HI_SEC_OFF as the lookup index.
This is used by a lo part reloc to find the corresponding hi part reloc. */
static riscv_pcgp_hi_reloc *
riscv_find_pcgp_hi_reloc(riscv_pcgp_relocs *p, bfd_vma hi_sec_off)
{
@ -2890,31 +2901,8 @@ riscv_find_pcgp_hi_reloc(riscv_pcgp_relocs *p, bfd_vma hi_sec_off)
return NULL;
}
static bfd_boolean
riscv_delete_pcgp_hi_reloc(riscv_pcgp_relocs *p, bfd_vma hi_sec_off)
{
bfd_boolean out = FALSE;
riscv_pcgp_hi_reloc *c;
for (c = p->hi; c != NULL; c = c->next)
if (c->hi_sec_off == hi_sec_off)
out = TRUE;
return out;
}
static bfd_boolean
riscv_use_pcgp_hi_reloc(riscv_pcgp_relocs *p, bfd_vma hi_sec_off)
{
bfd_boolean out = FALSE;
riscv_pcgp_hi_reloc *c;
for (c = p->hi; c != NULL; c = c->next)
if (c->hi_sec_off == hi_sec_off)
out = TRUE;
return out;
}
/* Record pcgp lo part reloc info in P, using HI_SEC_OFF as the lookup info.
This is used to record relocs that can't be relaxed. */
static bfd_boolean
riscv_record_pcgp_lo_reloc (riscv_pcgp_relocs *p, bfd_vma hi_sec_off)
@ -2928,6 +2916,9 @@ riscv_record_pcgp_lo_reloc (riscv_pcgp_relocs *p, bfd_vma hi_sec_off)
return TRUE;
}
/* Look up lo part pcgp reloc info in P, using HI_SEC_OFF as the lookup index.
This is used by a hi part reloc to find the corresponding lo part reloc. */
static bfd_boolean
riscv_find_pcgp_lo_reloc (riscv_pcgp_relocs *p, bfd_vma hi_sec_off)
{
@ -2939,14 +2930,6 @@ riscv_find_pcgp_lo_reloc (riscv_pcgp_relocs *p, bfd_vma hi_sec_off)
return FALSE;
}
static bfd_boolean
riscv_delete_pcgp_lo_reloc (riscv_pcgp_relocs *p ATTRIBUTE_UNUSED,
bfd_vma lo_sec_off ATTRIBUTE_UNUSED,
size_t bytes ATTRIBUTE_UNUSED)
{
return TRUE;
}
typedef bfd_boolean (*relax_func_t) (bfd *, asection *, asection *,
struct bfd_link_info *,
Elf_Internal_Rela *,
@ -3230,7 +3213,7 @@ _bfd_riscv_relax_align (bfd *abfd, asection *sec,
/* Relax PC-relative references to GP-relative references. */
static bfd_boolean
_bfd_riscv_relax_pc (bfd *abfd,
_bfd_riscv_relax_pc (bfd *abfd ATTRIBUTE_UNUSED,
asection *sec,
asection *sym_sec,
struct bfd_link_info *link_info,
@ -3270,11 +3253,6 @@ _bfd_riscv_relax_pc (bfd *abfd,
hi_reloc = *hi;
symval = hi_reloc.hi_addr;
sym_sec = hi_reloc.sym_sec;
if (!riscv_use_pcgp_hi_reloc(pcgp_relocs, hi->hi_sec_off))
_bfd_error_handler
(_("%pB(%pA+%#" PRIx64 "): Unable to clear RISCV_PCREL_HI20 reloc "
"for corresponding RISCV_PCREL_LO12 reloc"),
abfd, sec, (uint64_t) rel->r_offset);
}
break;
@ -3318,12 +3296,12 @@ _bfd_riscv_relax_pc (bfd *abfd,
case R_RISCV_PCREL_LO12_I:
rel->r_info = ELFNN_R_INFO (sym, R_RISCV_GPREL_I);
rel->r_addend += hi_reloc.hi_addend;
return riscv_delete_pcgp_lo_reloc (pcgp_relocs, rel->r_offset, 4);
return TRUE;
case R_RISCV_PCREL_LO12_S:
rel->r_info = ELFNN_R_INFO (sym, R_RISCV_GPREL_S);
rel->r_addend += hi_reloc.hi_addend;
return riscv_delete_pcgp_lo_reloc (pcgp_relocs, rel->r_offset, 4);
return TRUE;
case R_RISCV_PCREL_HI20:
riscv_record_pcgp_hi_reloc (pcgp_relocs,
@ -3335,7 +3313,7 @@ _bfd_riscv_relax_pc (bfd *abfd,
/* We can delete the unnecessary AUIPC and reloc. */
rel->r_info = ELFNN_R_INFO (0, R_RISCV_DELETE);
rel->r_addend = 4;
return riscv_delete_pcgp_hi_reloc (pcgp_relocs, rel->r_offset);
return TRUE;
default:
abort ();