diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/alpha/kernel/entry.S | 9 | ||||
| -rw-r--r-- | arch/alpha/kernel/ptrace.c | 42 |
2 files changed, 6 insertions, 45 deletions
diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S index debc8f0..5fc61e2 100644 --- a/arch/alpha/kernel/entry.S +++ b/arch/alpha/kernel/entry.S @@ -917,15 +917,6 @@ sys_pipe: .end sys_pipe .align 4 - .globl sys_ptrace - .ent sys_ptrace -sys_ptrace: - .prologue 0 - mov $sp, $20 - jmp $31, do_sys_ptrace -.end sys_ptrace - - .align 4 .globl sys_execve .ent sys_execve sys_execve: diff --git a/arch/alpha/kernel/ptrace.c b/arch/alpha/kernel/ptrace.c index eaf4ee5..1e9ad52 100644 --- a/arch/alpha/kernel/ptrace.c +++ b/arch/alpha/kernel/ptrace.c @@ -260,38 +260,12 @@ void ptrace_disable(struct task_struct *child) ptrace_cancel_bpt(child); } -asmlinkage long -do_sys_ptrace(long request, long pid, long addr, long data, - struct pt_regs *regs) +long arch_ptrace(struct task_struct *child, long request, long addr, long data) { - struct task_struct *child; unsigned long tmp; size_t copied; long ret; - lock_kernel(); - DBG(DBG_MEM, ("request=%ld pid=%ld addr=0x%lx data=0x%lx\n", - request, pid, addr, data)); - if (request == PTRACE_TRACEME) { - ret = ptrace_traceme(); - goto out_notsk; - } - - child = ptrace_get_task_struct(pid); - if (IS_ERR(child)) { - ret = PTR_ERR(child); - goto out_notsk; - } - - if (request == PTRACE_ATTACH) { - ret = ptrace_attach(child); - goto out; - } - - ret = ptrace_check_attach(child, request == PTRACE_KILL); - if (ret < 0) - goto out; - switch (request) { /* When I and D space are separate, these will need to be fixed. */ case PTRACE_PEEKTEXT: /* read word at location addr. */ @@ -301,13 +275,13 @@ do_sys_ptrace(long request, long pid, long addr, long data, if (copied != sizeof(tmp)) break; - regs->r0 = 0; /* special return: no errors */ + force_successful_syscall_return(); ret = tmp; break; /* Read register number ADDR. */ case PTRACE_PEEKUSR: - regs->r0 = 0; /* special return: no errors */ + force_successful_syscall_return(); ret = get_reg(child, addr); DBG(DBG_MEM, ("peek $%ld->%#lx\n", addr, ret)); break; @@ -353,7 +327,7 @@ do_sys_ptrace(long request, long pid, long addr, long data, /* make sure single-step breakpoint is gone. */ ptrace_cancel_bpt(child); wake_up_process(child); - goto out; + break; case PTRACE_SINGLESTEP: /* execute single instruction. */ ret = -EIO; @@ -366,16 +340,12 @@ do_sys_ptrace(long request, long pid, long addr, long data, wake_up_process(child); /* give it a chance to run. */ ret = 0; - goto out; + break; default: ret = ptrace_request(child, request, addr, data); - goto out; + break; } - out: - put_task_struct(child); - out_notsk: - unlock_kernel(); return ret; } |