87 lines
2.3 KiB
C
87 lines
2.3 KiB
C
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/**********************************************************************
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wait.c
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Copyright (C) 1999 Lars Brinkhoff. See the file COPYING for licensing
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terms and conditions.
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**********************************************************************/
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#include <errno.h>
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#include <signal.h>
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#include <sys/wait.h>
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#include "ptproxy.h"
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#include "sysdep.h"
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#include "wait.h"
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#include "user_util.h"
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#include "ptrace_user.h"
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#include "sysdep/ptrace.h"
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#include "sysdep/sigcontext.h"
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int proxy_wait_return(struct debugger *debugger, pid_t unused)
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{
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debugger->waiting = 0;
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if(debugger->debugee->died || (debugger->wait_options & __WCLONE)){
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debugger_cancelled_return(debugger, -ECHILD);
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return(0);
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}
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if(debugger->debugee->zombie && debugger->debugee->event)
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debugger->debugee->died = 1;
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if(debugger->debugee->event){
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debugger->debugee->event = 0;
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ptrace(PTRACE_POKEDATA, debugger->pid,
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debugger->wait_status_ptr,
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debugger->debugee->wait_status);
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/* if (wait4)
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ptrace (PTRACE_POKEDATA, pid, rusage_ptr, ...); */
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debugger_cancelled_return(debugger, debugger->debugee->pid);
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return(0);
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}
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/* pause will return -EINTR, which happens to be right for wait */
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debugger_normal_return(debugger, -1);
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return(0);
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}
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int parent_wait_return(struct debugger *debugger, pid_t unused)
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{
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return(debugger_normal_return(debugger, -1));
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}
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int real_wait_return(struct debugger *debugger)
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{
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unsigned long ip;
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int pid;
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pid = debugger->pid;
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ip = ptrace(PTRACE_PEEKUSR, pid, PT_IP_OFFSET, 0);
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IP_RESTART_SYSCALL(ip);
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if(ptrace(PTRACE_POKEUSR, pid, PT_IP_OFFSET, ip) < 0)
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tracer_panic("real_wait_return : Failed to restart system "
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"call, errno = %d\n", errno);
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if((ptrace(PTRACE_SYSCALL, debugger->pid, 0, SIGCHLD) < 0) ||
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(ptrace(PTRACE_SYSCALL, debugger->pid, 0, 0) < 0) ||
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(ptrace(PTRACE_SYSCALL, debugger->pid, 0, 0) < 0) ||
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debugger_normal_return(debugger, -1))
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tracer_panic("real_wait_return : gdb failed to wait, "
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"errno = %d\n", errno);
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return(0);
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}
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/*
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* Overrides for Emacs so that we follow Linus's tabbing style.
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* Emacs will notice this stuff at the end of the file and automatically
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* adjust the settings for this buffer only. This must remain at the end
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* of the file.
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* ---------------------------------------------------------------------------
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* Local variables:
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* c-file-style: "linux"
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* End:
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*/
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