This is the mail archive of the
binutils@sourceware.org
mailing list for the binutils project.
[PATCH 2/7] RISC-V: Fix the offset of CFA relocation.
- From: Palmer Dabbelt <palmer at dabbelt dot com>
- To: binutils at sourceware dot org
- To: Tristan Gingold <gingold at adacore dot com>
- Cc: Kuan-Lin Chen <rufus at andestech dot com>
- Date: Wed, 22 Mar 2017 16:04:03 -0700
- Subject: [PATCH 2/7] RISC-V: Fix the offset of CFA relocation.
- Authentication-results: sourceware.org; auth=none
- References: <20170322230408.8885-1-palmer@dabbelt.com>
From: Kuan-Lin Chen <rufus@andestech.com>
gas/ChangeLog:
2017-03-02 Kuan-Lin Chen <rufus@andestech.com>
* config/tc-riscv.c (md_apply_fix): Compute the correct offsets
for CFA relocations.
---
gas/ChangeLog | 5 +++++
gas/config/tc-riscv.c | 20 ++++++++++----------
2 files changed, 15 insertions(+), 10 deletions(-)
diff --git a/gas/ChangeLog b/gas/ChangeLog
index d59472a..7639ec7 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,8 @@
+2017-03-02 Kuan-Lin Chen <rufus@andestech.com>
+
+ * config/tc-riscv.c (md_apply_fix): Compute the correct offsets
+ for CFA relocations.
+
2017-03-21 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
Backport from mainline
diff --git a/gas/config/tc-riscv.c b/gas/config/tc-riscv.c
index ec5b0bb..c79f313 100644
--- a/gas/config/tc-riscv.c
+++ b/gas/config/tc-riscv.c
@@ -1837,6 +1837,7 @@ md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
unsigned int subtype;
bfd_byte *buf = (bfd_byte *) (fixP->fx_frag->fr_literal + fixP->fx_where);
bfd_boolean relaxable = FALSE;
+ offsetT loc;
/* Remember value for tc_gen_reloc. */
fixP->fx_addnumber = *valP;
@@ -1922,30 +1923,31 @@ md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
case BFD_RELOC_RISCV_CFA:
/* Load the byte to get the subtype. */
- subtype = bfd_get_8 (NULL, &fixP->fx_frag->fr_literal[fixP->fx_where]);
+ subtype = bfd_get_8 (NULL, &((fragS *) (fixP->fx_frag->fr_opcode))->fr_literal[fixP->fx_where]);
+ loc = fixP->fx_frag->fr_fix - (subtype & 7);
switch (subtype)
{
case DW_CFA_advance_loc1:
- fixP->fx_where++;
- fixP->fx_next->fx_where++;
+ fixP->fx_where = loc + 1;
+ fixP->fx_next->fx_where = loc + 1;
fixP->fx_r_type = BFD_RELOC_RISCV_SET8;
fixP->fx_next->fx_r_type = BFD_RELOC_RISCV_SUB8;
break;
case DW_CFA_advance_loc2:
fixP->fx_size = 2;
- fixP->fx_where++;
fixP->fx_next->fx_size = 2;
- fixP->fx_next->fx_where++;
+ fixP->fx_where = loc + 1;
+ fixP->fx_next->fx_where = loc + 1;
fixP->fx_r_type = BFD_RELOC_RISCV_SET16;
fixP->fx_next->fx_r_type = BFD_RELOC_RISCV_SUB16;
break;
case DW_CFA_advance_loc4:
fixP->fx_size = 4;
- fixP->fx_where++;
fixP->fx_next->fx_size = 4;
- fixP->fx_next->fx_where++;
+ fixP->fx_where = loc;
+ fixP->fx_next->fx_where = loc;
fixP->fx_r_type = BFD_RELOC_RISCV_SET32;
fixP->fx_next->fx_r_type = BFD_RELOC_RISCV_SUB32;
break;
@@ -2069,7 +2071,6 @@ riscv_pre_output_hook (void)
{
if (frag->fr_type == rs_cfa)
{
- fragS *loc4_frag;
expressionS exp;
symbolS *add_symbol = frag->fr_symbol->sy_value.X_add_symbol;
@@ -2080,8 +2081,7 @@ riscv_pre_output_hook (void)
exp.X_add_number = 0;
exp.X_op_symbol = op_symbol;
- loc4_frag = (fragS *) frag->fr_opcode;
- fix_new_exp (loc4_frag, (int) frag->fr_offset, 1, &exp, 0,
+ fix_new_exp (frag, (int) frag->fr_offset, 1, &exp, 0,
BFD_RELOC_RISCV_CFA);
}
}
--
2.10.2