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Diffstat (limited to 'arch/um/kernel/tt/ptproxy/wait.c')
-rw-r--r--arch/um/kernel/tt/ptproxy/wait.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/arch/um/kernel/tt/ptproxy/wait.c b/arch/um/kernel/tt/ptproxy/wait.c
new file mode 100644
index 00000000000..12f6319d8d7
--- /dev/null
+++ b/arch/um/kernel/tt/ptproxy/wait.c
@@ -0,0 +1,86 @@
+/**********************************************************************
+wait.c
+
+Copyright (C) 1999 Lars Brinkhoff. See the file COPYING for licensing
+terms and conditions.
+
+**********************************************************************/
+
+#include <errno.h>
+#include <signal.h>
+#include <sys/wait.h>
+
+#include "ptproxy.h"
+#include "sysdep.h"
+#include "wait.h"
+#include "user_util.h"
+#include "ptrace_user.h"
+#include "sysdep/ptrace.h"
+#include "sysdep/sigcontext.h"
+
+int proxy_wait_return(struct debugger *debugger, pid_t unused)
+{
+ debugger->waiting = 0;
+
+ if(debugger->debugee->died || (debugger->wait_options & __WCLONE)){
+ debugger_cancelled_return(debugger, -ECHILD);
+ return(0);
+ }
+
+ if(debugger->debugee->zombie && debugger->debugee->event)
+ debugger->debugee->died = 1;
+
+ if(debugger->debugee->event){
+ debugger->debugee->event = 0;
+ ptrace(PTRACE_POKEDATA, debugger->pid,
+ debugger->wait_status_ptr,
+ debugger->debugee->wait_status);
+ /* if (wait4)
+ ptrace (PTRACE_POKEDATA, pid, rusage_ptr, ...); */
+ debugger_cancelled_return(debugger, debugger->debugee->pid);
+ return(0);
+ }
+
+ /* pause will return -EINTR, which happens to be right for wait */
+ debugger_normal_return(debugger, -1);
+ return(0);
+}
+
+int parent_wait_return(struct debugger *debugger, pid_t unused)
+{
+ return(debugger_normal_return(debugger, -1));
+}
+
+int real_wait_return(struct debugger *debugger)
+{
+ unsigned long ip;
+ int pid;
+
+ pid = debugger->pid;
+
+ ip = ptrace(PTRACE_PEEKUSR, pid, PT_IP_OFFSET, 0);
+ IP_RESTART_SYSCALL(ip);
+
+ if(ptrace(PTRACE_POKEUSR, pid, PT_IP_OFFSET, ip) < 0)
+ tracer_panic("real_wait_return : Failed to restart system "
+ "call, errno = %d\n", errno);
+
+ if((ptrace(PTRACE_SYSCALL, debugger->pid, 0, SIGCHLD) < 0) ||
+ (ptrace(PTRACE_SYSCALL, debugger->pid, 0, 0) < 0) ||
+ (ptrace(PTRACE_SYSCALL, debugger->pid, 0, 0) < 0) ||
+ debugger_normal_return(debugger, -1))
+ tracer_panic("real_wait_return : gdb failed to wait, "
+ "errno = %d\n", errno);
+ return(0);
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only. This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */