While PPC_PTRACE_SETHWDEBUG ptrace flag in PowerPC accepts
PPC_BREAKPOINT_MODE_EXACT mode of breakpoint, the same is not intimated to the
user-space debuggers (like GDB) who may want to use it. Hence we introduce a
new PPC_DEBUG_FEATURE_DATA_BP_EXACT flag which will be populated on the
"features" member of "struct ppc_debug_info" to advertise support for the
same on Book3E PowerPC processors.
Signed-off-by: K.Prasad <pra...@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/ptrace.h | 1 +
arch/powerpc/kernel/ptrace.c | 1 +
2 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/ptrace.h
b/arch/powerpc/include/asm/ptrace.h
index 48223f9..cf014f9 100644
--- a/arch/powerpc/include/asm/ptrace.h
+++ b/arch/powerpc/include/asm/ptrace.h
@@ -380,6 +380,7 @@ struct ppc_debug_info {
#define PPC_DEBUG_FEATURE_INSN_BP_MASK 0x0000000000000002
#define PPC_DEBUG_FEATURE_DATA_BP_RANGE 0x0000000000000004
#define PPC_DEBUG_FEATURE_DATA_BP_MASK 0x0000000000000008
+#define PPC_DEBUG_FEATURE_DATA_BP_EXACT 0x0000000000000010
#ifndef __ASSEMBLY__
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 18d28b6..71db5a6 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -1636,6 +1636,7 @@ long arch_ptrace(struct task_struct *child, long request,
#ifdef CONFIG_PPC_ADV_DEBUG_DAC_RANGE
dbginfo.features |=
PPC_DEBUG_FEATURE_DATA_BP_RANGE |
+ PPC_DEBUG_FEATURE_DATA_BP_EXACT |
PPC_DEBUG_FEATURE_DATA_BP_MASK;
#endif
#else /* !CONFIG_PPC_ADV_DEBUG_REGS */
--
1.7.4.1
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