This adds the PTRACE_SINGLEBLOCK request on x86, matching the ia64 feature.
The implementation comes from the generic ptrace code and relies on the
low-level machine support provided by arch_has_block_step() et al.
Signed-off-by: Roland McGrath <[email protected]>
---
arch/x86/ia32/ptrace32.c | 1 +
include/asm-x86/ptrace-abi.h | 2 ++
2 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/arch/x86/ia32/ptrace32.c b/arch/x86/ia32/ptrace32.c
index 5661abd..d1fe78c 100644
--- a/arch/x86/ia32/ptrace32.c
+++ b/arch/x86/ia32/ptrace32.c
@@ -212,6 +212,7 @@ asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data)
case PTRACE_KILL:
case PTRACE_CONT:
case PTRACE_SINGLESTEP:
+ case PTRACE_SINGLEBLOCK:
case PTRACE_DETACH:
case PTRACE_SYSCALL:
case PTRACE_OLDSETOPTIONS:
diff --git a/include/asm-x86/ptrace-abi.h b/include/asm-x86/ptrace-abi.h
index 7524e12..adce6b5 100644
--- a/include/asm-x86/ptrace-abi.h
+++ b/include/asm-x86/ptrace-abi.h
@@ -78,4 +78,6 @@
# define PTRACE_SYSEMU_SINGLESTEP 32
#endif
+#define PTRACE_SINGLEBLOCK 33 /* resume execution until next branch */
+
#endif
-
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