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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2014-03-14 12:01:08 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2014-03-14 12:59:38 +0100
commit818a330c4e1be9c39fa7ca9221e044907d92b4bb (patch)
tree1341793bde170543839a96a71fd72350c8f04c1d /arch/s390/include/asm
parent443fc8a3e01cef95f2c7c26605457d49e63da6b1 (diff)
downloadop-kernel-dev-818a330c4e1be9c39fa7ca9221e044907d92b4bb.zip
op-kernel-dev-818a330c4e1be9c39fa7ca9221e044907d92b4bb.tar.gz
s390/ptrace: add support for PTRACE_SINGLEBLOCK
The PTRACE_SINGLEBLOCK option is used to get control whenever the inferior has executed a successful branch. The PER option to implement block stepping is successful-branching event, bit 32 in the PER-event mask. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm')
-rw-r--r--arch/s390/include/asm/ptrace.h1
-rw-r--r--arch/s390/include/asm/thread_info.h1
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index 9c82ceb..f4783c0 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -83,6 +83,7 @@ struct per_struct_kernel {
* These are defined as per linux/ptrace.h, which see.
*/
#define arch_has_single_step() (1)
+#define arch_has_block_step() (1)
#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
#define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index d2e53d6..3ccd71b 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -92,6 +92,7 @@ static inline struct thread_info *current_thread_info(void)
#define TIF_MEMDIE 18 /* is terminating due to OOM killer */
#define TIF_RESTORE_SIGMASK 19 /* restore signal mask in do_signal() */
#define TIF_SINGLE_STEP 20 /* This task is single stepped */
+#define TIF_BLOCK_STEP 21 /* This task is block stepped */
#define _TIF_SYSCALL (1<<TIF_SYSCALL)
#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
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