mirror of
https://github.com/crosstool-ng/crosstool-ng.git
synced 2024-12-25 23:41:05 +00:00
91 lines
2.6 KiB
Diff
91 lines
2.6 KiB
Diff
|
From 415480d6471e67aef97c0241d451ef2423a1da9d Mon Sep 17 00:00:00 2001
|
||
|
|
From: Max Filippov <jcmvbkbc@gmail.com>
|
||
|
|
Date: Tue, 25 Nov 2014 21:33:21 +0300
|
||
|
|
Subject: [PATCH] Fix trampolines search code for conditional branches
|
||
|
|
|
||
|
|
For conditional branches that need more than one trampoline to reach its
|
||
|
|
target assembler couldn't always find suitable trampoline because
|
||
|
|
post-loop condition check was placed inside the loop, resulting in
|
||
|
|
premature loop termination. Move check outside the loop.
|
||
|
|
|
||
|
|
This fixes the following build errors seen when assembling huge files
|
||
|
|
produced by gcc:
|
||
|
|
Error: jump target out of range; no usable trampoline found
|
||
|
|
Error: operand 1 of 'j' has out of range value '307307'
|
||
|
|
|
||
|
|
2014-11-25 Max Filippov <jcmvbkbc@gmail.com>
|
||
|
|
|
||
|
|
gas/
|
||
|
|
* config/tc-xtensa.c (search_trampolines): Move post-loop
|
||
|
|
condition check outside the search loop.
|
||
|
|
|
||
|
|
gas/testsuite/
|
||
|
|
* gas/xtensa/trampoline.d: Add expected output for branches.
|
||
|
|
* gas/xtensa/trampoline.s: Add test case for branches.
|
||
|
|
|
||
|
|
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
|
||
|
|
---
|
||
|
|
Backported from: d92b6eece424f0ad35d96fdd85bf207295e8c4c3
|
||
|
|
Changes to ChangeLogs are dropped.
|
||
|
|
|
||
|
|
gas/config/tc-xtensa.c | 8 ++++----
|
||
|
|
gas/testsuite/gas/xtensa/trampoline.d | 9 +++++++++
|
||
|
|
gas/testsuite/gas/xtensa/trampoline.s | 7 +++++++
|
||
|
|
3 files changed, 20 insertions(+), 4 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/gas/config/tc-xtensa.c b/gas/config/tc-xtensa.c
|
||
|
|
index d11b0c7..f23ccf8 100644
|
||
|
|
--- a/gas/config/tc-xtensa.c
|
||
|
|
+++ b/gas/config/tc-xtensa.c
|
||
|
|
@@ -9514,11 +9514,11 @@ search_trampolines (TInsn *tinsn, fragS *fragP, bfd_boolean unreachable_only)
|
||
|
|
if (next_addr == 0 || addr - next_addr > J_RANGE)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
- if (abs (addr - this_addr) < J_RANGE)
|
||
|
|
- return tf;
|
||
|
|
-
|
||
|
|
- return NULL;
|
||
|
|
}
|
||
|
|
+ if (abs (addr - this_addr) < J_RANGE)
|
||
|
|
+ return tf;
|
||
|
|
+
|
||
|
|
+ return NULL;
|
||
|
|
}
|
||
|
|
for ( ; tf; tf = tf->next)
|
||
|
|
{
|
||
|
|
diff --git a/gas/testsuite/gas/xtensa/trampoline.d b/gas/testsuite/gas/xtensa/trampoline.d
|
||
|
|
index b4f65dc..5ae32a6 100644
|
||
|
|
--- a/gas/testsuite/gas/xtensa/trampoline.d
|
||
|
|
+++ b/gas/testsuite/gas/xtensa/trampoline.d
|
||
|
|
@@ -24,3 +24,12 @@
|
||
|
|
.*33462:.*j.0x49407
|
||
|
|
#...
|
||
|
|
.*49407:.*j.0x49407
|
||
|
|
+.*4940a:.*beqz.n.a2,.0x4940f
|
||
|
|
+.*4940c:.*j.0x693d1
|
||
|
|
+#...
|
||
|
|
+.*693d1:.*j.0x7ddd4
|
||
|
|
+#...
|
||
|
|
+.*7ddd4:.*j.0x927f5
|
||
|
|
+#...
|
||
|
|
+.*927f5:.*j.0x927f5
|
||
|
|
+#...
|
||
|
|
diff --git a/gas/testsuite/gas/xtensa/trampoline.s b/gas/testsuite/gas/xtensa/trampoline.s
|
||
|
|
index 259a3bb..4465786 100644
|
||
|
|
--- a/gas/testsuite/gas/xtensa/trampoline.s
|
||
|
|
+++ b/gas/testsuite/gas/xtensa/trampoline.s
|
||
|
|
@@ -19,3 +19,10 @@
|
||
|
|
.endr
|
||
|
|
3:
|
||
|
|
j 3b
|
||
|
|
+ bnez a2, 4f
|
||
|
|
+ .rep 50000
|
||
|
|
+ and a2, a2, a3
|
||
|
|
+ _ret
|
||
|
|
+ .endr
|
||
|
|
+4:
|
||
|
|
+ j 4b
|
||
|
|
--
|
||
|
|
1.8.1.4
|
||
|
|
|