diff options
| -rw-r--r-- | arch/blackfin/include/asm/thread_info.h | 2 | ||||
| -rw-r--r-- | arch/blackfin/kernel/ptrace.c | 11 | ||||
| -rw-r--r-- | arch/blackfin/kernel/signal.c | 3 | ||||
| -rw-r--r-- | arch/blackfin/mach-common/entry.S | 2 |
4 files changed, 15 insertions, 3 deletions
diff --git a/arch/blackfin/include/asm/thread_info.h b/arch/blackfin/include/asm/thread_info.h index 0149c92..e9a5614 100644 --- a/arch/blackfin/include/asm/thread_info.h +++ b/arch/blackfin/include/asm/thread_info.h @@ -103,6 +103,7 @@ static inline struct thread_info *current_thread_info(void) #define TIF_FREEZE 6 /* is freezing for suspend */ #define TIF_IRQ_SYNC 7 /* sync pipeline stage */ #define TIF_NOTIFY_RESUME 8 /* callback before returning to user */ +#define TIF_SINGLESTEP 9 /* as above, but as bit values */ #define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) @@ -113,6 +114,7 @@ static inline struct thread_info *current_thread_info(void) #define _TIF_FREEZE (1<<TIF_FREEZE) #define _TIF_IRQ_SYNC (1<<TIF_IRQ_SYNC) #define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) +#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP) #define _TIF_WORK_MASK 0x0000FFFE /* work to do on interrupt/exception return */ diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c index 0618b828..43eb969 100644 --- a/arch/blackfin/kernel/ptrace.c +++ b/arch/blackfin/kernel/ptrace.c @@ -220,12 +220,16 @@ void user_enable_single_step(struct task_struct *child) { struct pt_regs *regs = task_pt_regs(child); regs->syscfg |= SYSCFG_SSSTEP; + + set_tsk_thread_flag(child, TIF_SINGLESTEP); } void user_disable_single_step(struct task_struct *child) { struct pt_regs *regs = task_pt_regs(child); regs->syscfg &= ~SYSCFG_SSSTEP; + + clear_tsk_thread_flag(child, TIF_SINGLESTEP); } long arch_ptrace(struct task_struct *child, long request, long addr, long data) @@ -401,6 +405,9 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs) asmlinkage void syscall_trace_leave(struct pt_regs *regs) { - if (test_thread_flag(TIF_SYSCALL_TRACE)) - tracehook_report_syscall_exit(regs, 0); + int step; + + step = test_thread_flag(TIF_SINGLESTEP); + if (step || test_thread_flag(TIF_SYSCALL_TRACE)) + tracehook_report_syscall_exit(regs, step); } diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c index e60990c..28d6f28 100644 --- a/arch/blackfin/kernel/signal.c +++ b/arch/blackfin/kernel/signal.c @@ -306,7 +306,8 @@ asmlinkage void do_signal(struct pt_regs *regs) if (test_thread_flag(TIF_RESTORE_SIGMASK)) clear_thread_flag(TIF_RESTORE_SIGMASK); - tracehook_signal_handler(signr, &info, &ka, regs, 1); + tracehook_signal_handler(signr, &info, &ka, regs, + test_thread_flag(TIF_SINGLESTEP)); } return; diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S index 0df5b83..0a9e458 100644 --- a/arch/blackfin/mach-common/entry.S +++ b/arch/blackfin/mach-common/entry.S @@ -642,6 +642,8 @@ ENTRY(_system_call) r7 = [p2+TI_FLAGS]; CC = BITTST(r7,TIF_SYSCALL_TRACE); if CC JUMP _sys_trace; + CC = BITTST(r7,TIF_SINGLESTEP); + if CC JUMP _sys_trace; /* Execute the appropriate system call */ |