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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.
This commit is contained in:
Edjunior Barbosa Machado 2013-05-17 23:05:00 +00:00
parent 7d0c9981dc
commit 4feebbddff
2 changed files with 17 additions and 8 deletions
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6
gdb/ChangeLog
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@ -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

19
gdb/ppc-linux-nat.c
View File

@ -1503,16 +1503,19 @@ ppc_linux_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len)
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