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[binutils-gdb] Relax pattern to match the output of "info frame" in gdb.base/savedregs.exp
- From: Yao Qi <qiyao at sourceware dot org>
- To: gdb-cvs at sourceware dot org
- Date: 26 Mar 2015 08:17:17 -0000
- Subject: [binutils-gdb] Relax pattern to match the output of "info frame" in gdb.base/savedregs.exp
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=8aa08a8dd596758904f1e994057c94bd655dda2e
commit 8aa08a8dd596758904f1e994057c94bd655dda2e
Author: Yao Qi <yao.qi@linaro.org>
Date: Thu Mar 26 08:16:20 2015 +0000
Relax pattern to match the output of "info frame" in gdb.base/savedregs.exp
Hi,
I see the following two fails in gdb.base/savedregs.exp on aarch64-linux,
info frame 2^M
Stack frame at 0x7ffffffa60:^M
pc = 0x40085c in thrower (/home/yao/SourceCode/gnu/gdb/git/gdb/testsuite/gdb.base/savedregs.c:49); saved pc = 0x400898^M
called by frame at 0x7ffffffa70, caller of frame at 0x7fffffe800^M
source language c.^M
Arglist at 0x7ffffffa60, args: ^M
Locals at 0x7ffffffa60, Previous frame's sp is 0x7ffffffa60^M
(gdb) FAIL: gdb.base/savedregs.exp: Get thrower info frame
info frame 2^M
Stack frame at 0x7fffffe800:^M
pc = 0x400840 in catcher (/home/yao/SourceCode/gnu/gdb/git/gdb/testsuite/gdb.base/savedregs.c:42); saved pc = 0x7fb7ffc350^M
called by frame at 0x7fffffe800, caller of frame at 0x7fffffe7e0^M
source language c.^M
Arglist at 0x7fffffe7f0, args: sig=11^M
Locals at 0x7fffffe7f0, Previous frame's sp is 0x7fffffe800
(gdb) FAIL: gdb.base/savedregs.exp: Get catcher info frame
looks the test expects to match "Saved registers:" from the output of
"info frame", but no registers are saved on these two frames, because
thrower and catcher are simple and leaf functions.
(gdb) disassemble thrower
Dump of assembler code for function thrower:
0x0000000000400858 <+0>: mov x0, #0x0 // #0
0x000000000040085c <+4>: strb wzr, [x0]
0x0000000000400860 <+8>: ret
End of assembler dump.
(gdb) disassemble catcher
Dump of assembler code for function catcher:
0x0000000000400838 <+0>: sub sp, sp, #0x10
0x000000000040083c <+4>: str w0, [sp,#12]
0x0000000000400840 <+8>: adrp x0, 0x410000
0x0000000000400844 <+12>: add x0, x0, #0xb9c
0x0000000000400848 <+16>: mov w1, #0x1 // #1
0x000000000040084c <+20>: str w1, [x0]
0x0000000000400850 <+24>: add sp, sp, #0x10
0x0000000000400854 <+28>: ret
There are two ways to fix these fails, one is to modify functions to
force some registers saved (for example, doing function call in them),
and the other one is to relax the pattern to optionally match
"Saved registers:". I did both, and feel that the latter is simple,
so here is it.
gdb/testsuite:
2015-03-26 Yao Qi <yao.qi@linaro.org>
* gdb.base/savedregs.exp (process_saved_regs): Make
"Saved registers:" optional in the pattern.
Diff:
---
gdb/testsuite/ChangeLog | 5 +++++
gdb/testsuite/gdb.base/savedregs.exp | 2 +-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index e501b11..735616e 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2015-03-26 Yao Qi <yao.qi@linaro.org>
+
+ * gdb.base/savedregs.exp (process_saved_regs): Make
+ "Saved registers:" optional in the pattern.
+
2015-03-25 Markus Metzger <markus.t.metzger@intel.com>
* gdb.btrace/next.exp: Merged into step.exp.
diff --git a/gdb/testsuite/gdb.base/savedregs.exp b/gdb/testsuite/gdb.base/savedregs.exp
index da8d90f..33df407 100644
--- a/gdb/testsuite/gdb.base/savedregs.exp
+++ b/gdb/testsuite/gdb.base/savedregs.exp
@@ -77,7 +77,7 @@ proc process_saved_regs { current inner outer } {
set pat "Stack frame at .* Saved registers:.*"
}
default {
- set pat "Stack frame at .* in $func .* Saved registers:.*"
+ set pat "Stack frame at .* in $func .*( Saved registers:.*)?"
}
}
# If the "info frame" barf, capture the output anyway so that