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[ppc] Backport hardware watchpoints fix (Edjunior Machado, BZ 967915).

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This commit is contained in:
Jan Kratochvil 2013-05-28 18:11:47 +02:00
parent 89fbbfccaf
commit a5cf0a66f1
2 changed files with 52 additions and 1 deletions
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48
gdb-upstream.patch
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@ -1293,3 +1293,51 @@ http://sourceware.org/ml/gdb-cvs/2013-05/msg00063.html
gdb_test_no_output "set breakpoint pending off" \
"disable pending breakpoints for linespec tests"
https://bugzilla.redhat.com/show_bug.cgi?id=967915
http://sourceware.org/ml/gdb-cvs/2013-05/msg00146.html
### src/gdb/ChangeLog 2013/05/17 18:09:05 1.15569
### src/gdb/ChangeLog 2013/05/17 23:05:00 1.15570
## -1,3 +1,9 @@
+2013-05-17 Edjunior Machado <emachado@linux.vnet.ibm.com>
+
+ * ppc-linux-nat.c (ppc_linux_region_ok_for_hw_watchpoint): Check if the
+ region is ok for a hardware watchpoint using the new ptrace interface
+ on Power servers.
+
2013-05-17 Doug Evans <dje@google.com>
* NEWS: Mention new maintenance commands check-symtabs, and
--- src/gdb/ppc-linux-nat.c 2013/05/07 07:43:33 1.119
+++ src/gdb/ppc-linux-nat.c 2013/05/17 23:05:00 1.120
@@ -1503,16 +1503,19 @@
to determine the hardcoded watchable region for watchpoints. */
if (have_ptrace_booke_interface ())
{
- /* DAC-based processors (i.e., embedded processors), like the PowerPC 440
- have ranged watchpoints and can watch any access within an arbitrary
- memory region. This is useful to watch arrays and structs, for
- instance. It takes two hardware watchpoints though. */
+ /* Embedded DAC-based processors, like the PowerPC 440 have ranged
+ watchpoints and can watch any access within an arbitrary memory
+ region. This is useful to watch arrays and structs, for instance. It
+ takes two hardware watchpoints though. */
if (len > 1
- && booke_debug_info.features & PPC_DEBUG_FEATURE_DATA_BP_RANGE)
+ && booke_debug_info.features & PPC_DEBUG_FEATURE_DATA_BP_RANGE
+ && ppc_linux_get_hwcap () & PPC_FEATURE_BOOKE)
return 2;
- else if (booke_debug_info.data_bp_alignment
- && (addr + len > (addr & ~(booke_debug_info.data_bp_alignment - 1))
- + booke_debug_info.data_bp_alignment))
+ /* Server processors provide one hardware watchpoint and addr+len should
+ fall in the watchable region provided by the ptrace interface. */
+ if (booke_debug_info.data_bp_alignment
+ && (addr + len > (addr & ~(booke_debug_info.data_bp_alignment - 1))
+ + booke_debug_info.data_bp_alignment))
return 0;
}
/* addr+len must fall in the 8 byte watchable region for DABR-based

5
gdb.spec
View File

@ -36,7 +36,7 @@ Version: 7.6
# The release always contains a leading reserved number, start it at 1.
# `upstream' is not a part of `name' to stay fully rpm dependencies compatible for the testing.
Release: 30%{?dist}
Release: 31%{?dist}
License: GPLv3+ and GPLv3+ with exceptions and GPLv2+ and GPLv2+ with exceptions and GPL+ and LGPLv2+ and BSD and Public Domain
Group: Development/Debuggers
@ -1402,6 +1402,9 @@ fi
%endif # 0%{!?el5:1} || "%{_target_cpu}" == "noarch"
%changelog
* Tue May 28 2013 Jan Kratochvil <jan.kratochvil@redhat.com> - 7.6-31.fc19
- [ppc] Backport hardware watchpoints fix (Edjunior Machado, BZ 967915).
* Tue May 21 2013 Jan Kratochvil <jan.kratochvil@redhat.com> - 7.6-30.fc19
- Backported Python frame filters (Phil Muldoon).
- Backported breakpoint conditions crash fix (Sergio Durigan Junior).