From: Max Filippov <jcmvbkbc@gmail.com>
To: binutils@sourceware.org
Cc: Sterling Augustine <augustine.sterling@gmail.com>,
Eric Tsai <erictsai@cadence.com>,
linux-xtensa@linux-xtensa.org, Max Filippov <jcmvbkbc@gmail.com>
Subject: [PATCH] xtensa: gas: put .literal_position at section start
Date: Wed, 10 Apr 2019 20:20:00 -0000 [thread overview]
Message-ID: <20190410202022.17370-1-jcmvbkbc@gmail.com> (raw)
Provide literal position at the beginning of each section for literal
space reserved by relaxations when text-section-literals or
auto-litpools options are used. Remove code that adds fill frag to the
literal section for every .literal_position directive to avoid creation
of empty literal sections.
Fix auto-litpools tests that got literal pool address changes.
gas/
2019-04-10 Max Filippov <jcmvbkbc@gmail.com>
* config/tc-xtensa.c (xtensa_is_init_fini): Add declaration.
(xtensa_mark_literal_pool_location): Don't add fill frag to literal
section that records literal pool location.
(md_begin): Call xtensa_mark_literal_pool_location when text
section literals or auto litpools are used.
(xtensa_elf_section_change_hook): Call
xtensa_mark_literal_pool_location when text section literals or
auto litpools are used, there's no literal pool location defined
for the current section and it's not .init or .fini.
* testsuite/gas/xtensa/auto-litpools-first1.d: Fix up addresses.
* testsuite/gas/xtensa/auto-litpools-first2.d: Likewise.
* testsuite/gas/xtensa/auto-litpools.d: Likewise.
---
gas/config/tc-xtensa.c | 22 +++++++++-------------
gas/testsuite/gas/xtensa/auto-litpools-first1.d | 6 +++---
gas/testsuite/gas/xtensa/auto-litpools-first2.d | 10 ++++------
gas/testsuite/gas/xtensa/auto-litpools.d | 6 +++---
4 files changed, 19 insertions(+), 25 deletions(-)
diff --git a/gas/config/tc-xtensa.c b/gas/config/tc-xtensa.c
index 0cc06361cf6f..6a80e76fed8c 100644
--- a/gas/config/tc-xtensa.c
+++ b/gas/config/tc-xtensa.c
@@ -497,6 +497,7 @@ static fixS *xg_append_jump (fragS *fragP, symbolS *sym, offsetT offset);
static void xtensa_maybe_create_literal_pool_frag (bfd_boolean, bfd_boolean);
static bfd_boolean auto_litpools = FALSE;
static int auto_litpool_limit = 0;
+static bfd_boolean xtensa_is_init_fini (segT seg);
/* Alignment Functions. */
@@ -4797,7 +4798,6 @@ xtensa_mark_literal_pool_location (void)
{
/* Any labels pointing to the current location need
to be adjusted to after the literal pool. */
- emit_state s;
fragS *pool_location;
if (use_literal_section)
@@ -4818,19 +4818,7 @@ xtensa_mark_literal_pool_location (void)
RELAX_LITERAL_POOL_END, NULL, 0, NULL);
xtensa_set_frag_assembly_state (frag_now);
- /* Now put a frag into the literal pool that points to this location. */
set_literal_pool_location (now_seg, pool_location);
- xtensa_switch_to_non_abs_literal_fragment (&s);
- frag_align (2, 0, 0);
- record_alignment (now_seg, 2);
-
- /* Close whatever frag is there. */
- frag_variant (rs_fill, 0, 0, 0, NULL, 0, NULL);
- xtensa_set_frag_assembly_state (frag_now);
- frag_now->tc_frag_data.literal_frag = pool_location;
- frag_variant (rs_fill, 0, 0, 0, NULL, 0, NULL);
- xtensa_restore_emit_state (&s);
- xtensa_set_frag_assembly_state (frag_now);
}
@@ -5334,6 +5322,9 @@ md_begin (void)
/* Set up the assembly state. */
if (!frag_now->tc_frag_data.is_assembly_state_set)
xtensa_set_frag_assembly_state (frag_now);
+
+ if (!use_literal_section)
+ xtensa_mark_literal_pool_location ();
}
@@ -5933,6 +5924,11 @@ xtensa_elf_section_change_hook (void)
/* Set up the assembly state. */
if (!frag_now->tc_frag_data.is_assembly_state_set)
xtensa_set_frag_assembly_state (frag_now);
+
+ if (!use_literal_section
+ && seg_info (now_seg)->tc_segment_info_data.literal_pool_loc == NULL
+ && !xtensa_is_init_fini (now_seg))
+ xtensa_mark_literal_pool_location ();
}
diff --git a/gas/testsuite/gas/xtensa/auto-litpools-first1.d b/gas/testsuite/gas/xtensa/auto-litpools-first1.d
index 322cdc52e30a..9dfb0b03db6d 100644
--- a/gas/testsuite/gas/xtensa/auto-litpools-first1.d
+++ b/gas/testsuite/gas/xtensa/auto-litpools-first1.d
@@ -5,8 +5,8 @@
.*: +file format .*xtensa.*
#...
Contents of section .text:
- 0000 ........ 20170331 .*
+ 0000 20170331 .*
#...
-00000000 <f>:
-.*0:.*j.8 .*
+00000004 <f>:
+.*4:.*l32r.*a2, 0.*
#...
diff --git a/gas/testsuite/gas/xtensa/auto-litpools-first2.d b/gas/testsuite/gas/xtensa/auto-litpools-first2.d
index a6b798e68044..44dbddd75128 100644
--- a/gas/testsuite/gas/xtensa/auto-litpools-first2.d
+++ b/gas/testsuite/gas/xtensa/auto-litpools-first2.d
@@ -5,11 +5,9 @@
.*: +file format .*xtensa.*
#...
Contents of section .text:
- 0000 ........ ........ 20170331 .*
+ 0000 20170331 .*
#...
-00000000 <f>:
- 0:.*addi.*a1.*
- 3:.*j.*c.*
-#...
- c:.*l32r.*a2, 8.*
+00000004 <f>:
+ 4:.*addi.*a1.*
+ 7:.*l32r.*a2, 0.*
#...
diff --git a/gas/testsuite/gas/xtensa/auto-litpools.d b/gas/testsuite/gas/xtensa/auto-litpools.d
index 8eadd1f08cf6..8b6d13e371b1 100644
--- a/gas/testsuite/gas/xtensa/auto-litpools.d
+++ b/gas/testsuite/gas/xtensa/auto-litpools.d
@@ -4,9 +4,9 @@
.*: +file format .*xtensa.*
#...
-.*8:.*l32r.a2, 4 .*
+.*4:.*l32r.a2, 0 .*
#...
-.*3f029:.*j.3f030 .*
+.*3f025:.*j.3f02c .*
#...
-.*40752:.*l32r.a2, 3f02c .*
+.*4074e:.*l32r.a2, 3f028 .*
#...
--
2.11.0
next reply other threads:[~2019-04-10 20:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-10 20:20 Max Filippov [this message]
2019-04-11 18:10 ` augustine.sterling
2019-04-11 18:45 ` Max Filippov
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