On 8/25/2011 10:06 AM, Carlos O'Donell wrote:
On 8/25/2011 6:37 AM, Rolf Eike Beer wrote:
const&)]+0xbc): cannot reach
00004abb__ZNSt8_Rb_treeIN5cmsys6StringESt4pairIKS1_iESt10_Select1stIS4_ESt4lessIS1_ESaIS4_EE8_S_rightEPSt18_Rb_tree_node_base+0,
recompile with -ffunction-sections
So did you recompile with -ffunction-sections?
The basic problem is that the linker was unable to insert a jump
to the requested function because it was too far away. Some targets
like hppa have short branch distances and we use intermediate stub
tables to get around that. However, we can't insert stub tables just
anywhere, they need to go between sections. Therefore you need to
break up this object file.
I think there is a real bug here but nobody has provided a test case.
-ffunction-sections
probably won't help.
Stub sizes vary depending on whether PIC code or non PIC code is being
generated.
We need a bigger stub table for PIC C++ code as C++ tends to generate a
lot of small
routines.
I've attached the GCC part of the change. There's also a binutils patch
which I can't
access at the moment.
Dave
--
John David Anglin dave.anglin@xxxxxxxx
Index: config/pa/pa.c
===================================================================
--- config/pa/pa.c (revision 178012)
+++ config/pa/pa.c (working copy)
@@ -7385,7 +7385,7 @@
return 24;
else
{
- if (!TARGET_LONG_CALLS && distance < 240000)
+ if (!TARGET_LONG_CALLS && distance < MAX_PCREL17F_OFFSET)
return 8;
if (TARGET_LONG_ABS_CALL && !flag_pic)
@@ -7598,7 +7598,7 @@
/* pc-relative branch. */
if (!TARGET_LONG_CALLS
&& ((TARGET_PA_20 && !sibcall && distance < 7600000)
- || distance < 240000))
+ || distance < MAX_PCREL17F_OFFSET))
length += 8;
/* 64-bit plabel sequence. */
@@ -7957,7 +7957,7 @@
if (TARGET_FAST_INDIRECT_CALLS
|| (!TARGET_PORTABLE_RUNTIME
&& ((TARGET_PA_20 && !TARGET_SOM && distance < 7600000)
- || distance < 240000)))
+ || distance < MAX_PCREL17F_OFFSET)))
return 8;
if (flag_pic)
Index: config/pa/pa.h
===================================================================
--- config/pa/pa.h (revision 178012)
+++ config/pa/pa.h (working copy)
@@ -1512,3 +1512,12 @@
#undef TARGET_HAVE_TLS
#define TARGET_HAVE_TLS true
#endif
+
+/* The maximum offset in bytes for a PA 1.X pc-relative call to the
+ tail of the preceding stub table. The selected offsets have been
+ chosen to allow approximately one call stub for every 86 instructions.
+ A long branch stub is two instructions when not generating PIC code.
+ More space is allowed for stubs when generating PIC code since HP-UX
+ and Linux import stubs are seven and four instructions, respectively. */
+#define MAX_PCREL17F_OFFSET \
+ (flag_pic ? (TARGET_HPUX ? 198164 : 221312) : 240000)
