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author | Petr Tesarik <ptesarik@suse.cz> | 2008-02-11 21:43:38 (GMT) |
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committer | Tony Luck <tony.luck@intel.com> | 2008-03-05 23:49:11 (GMT) |
commit | 8db3f5254151c3a06a764bbb18283570ba1897bf (patch) | |
tree | 3ea87ac42410202946c5c18871ba212c2c8192b2 | |
parent | eac738e6cea16bfbd7b9018d60d009aedd2d14b6 (diff) | |
download | linux-fsl-qoriq-8db3f5254151c3a06a764bbb18283570ba1897bf.tar.xz |
[IA64] remove duplicate code from arch_ptrace()
Remove all code which does exactly the same thing as ptrace_request().
Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Tony Luck <tony.luck@intel.com>
-rw-r--r-- | arch/ia64/kernel/ptrace.c | 96 | ||||
-rw-r--r-- | include/asm-ia64/ptrace.h | 7 |
2 files changed, 36 insertions, 67 deletions
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c index 1dfff5a..f10c8b4 100644 --- a/arch/ia64/kernel/ptrace.c +++ b/arch/ia64/kernel/ptrace.c @@ -1454,6 +1454,35 @@ ptrace_setregs (struct task_struct *child, struct pt_all_user_regs __user *ppr) return ret; } +void +user_enable_single_step (struct task_struct *child) +{ + struct ia64_psr *child_psr = ia64_psr(task_pt_regs(child)); + + set_tsk_thread_flag(child, TIF_SINGLESTEP); + child_psr->ss = 1; +} + +void +user_enable_block_step (struct task_struct *child) +{ + struct ia64_psr *child_psr = ia64_psr(task_pt_regs(child)); + + set_tsk_thread_flag(child, TIF_SINGLESTEP); + child_psr->tb = 1; +} + +void +user_disable_single_step (struct task_struct *child) +{ + struct ia64_psr *child_psr = ia64_psr(task_pt_regs(child)); + + /* make sure the single step/taken-branch trap bits are not set: */ + clear_tsk_thread_flag(child, TIF_SINGLESTEP); + child_psr->ss = 0; + child_psr->tb = 0; +} + /* * Called by kernel/ptrace.c when detaching.. * @@ -1528,73 +1557,6 @@ arch_ptrace (struct task_struct *child, long request, long addr, long data) ret = ptrace_request(child, PTRACE_SETSIGINFO, addr, data); goto out_tsk; - case PTRACE_SYSCALL: - /* continue and stop at next (return from) syscall */ - case PTRACE_CONT: - /* restart after signal. */ - ret = -EIO; - if (!valid_signal(data)) - goto out_tsk; - if (request == PTRACE_SYSCALL) - set_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - else - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - child->exit_code = data; - - /* - * Make sure the single step/taken-branch trap bits - * are not set: - */ - clear_tsk_thread_flag(child, TIF_SINGLESTEP); - ia64_psr(pt)->ss = 0; - ia64_psr(pt)->tb = 0; - - wake_up_process(child); - ret = 0; - goto out_tsk; - - case PTRACE_KILL: - /* - * Make the child exit. Best I can do is send it a - * sigkill. Perhaps it should be put in the status - * that it wants to exit. - */ - if (child->exit_state == EXIT_ZOMBIE) - /* already dead */ - return 0; - child->exit_code = SIGKILL; - - ptrace_disable(child); - wake_up_process(child); - ret = 0; - goto out_tsk; - - case PTRACE_SINGLESTEP: - /* let child execute for one instruction */ - case PTRACE_SINGLEBLOCK: - ret = -EIO; - if (!valid_signal(data)) - goto out_tsk; - - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - set_tsk_thread_flag(child, TIF_SINGLESTEP); - if (request == PTRACE_SINGLESTEP) { - ia64_psr(pt)->ss = 1; - } else { - ia64_psr(pt)->tb = 1; - } - child->exit_code = data; - - /* give it a chance to run. */ - wake_up_process(child); - ret = 0; - goto out_tsk; - - case PTRACE_DETACH: - /* detach a process that was attached. */ - ret = ptrace_detach(child, data); - goto out_tsk; - case PTRACE_GETREGS: ret = ptrace_getregs(child, (struct pt_all_user_regs __user *) data); diff --git a/include/asm-ia64/ptrace.h b/include/asm-ia64/ptrace.h index 5b52340..4b2a8d4 100644 --- a/include/asm-ia64/ptrace.h +++ b/include/asm-ia64/ptrace.h @@ -312,6 +312,13 @@ struct switch_stack { #define arch_ptrace_attach(child) \ ptrace_attach_sync_user_rbs(child) + #define arch_has_single_step() (1) + extern void user_enable_single_step(struct task_struct *); + extern void user_disable_single_step(struct task_struct *); + + #define arch_has_block_step() (1) + extern void user_enable_block_step(struct task_struct *); + #endif /* !__KERNEL__ */ /* pt_all_user_regs is used for PTRACE_GETREGS PTRACE_SETREGS */ |