2 * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
7 #include "linux/ptrace.h"
9 #include "asm/unistd.h"
10 #include "asm/ptrace.h"
11 #include "asm/current.h"
12 #include "sysdep/syscalls.h"
13 #include "kern_util.h"
16 void handle_syscall(union uml_pt_regs *r)
18 struct pt_regs *regs = container_of(r, struct pt_regs, regs);
21 #ifdef UML_CONFIG_SYSCALL_DEBUG
24 index = record_syscall_start(UPT_SYSCALL_NR(r));
28 current->thread.nsyscalls++;
31 /* This should go in the declaration of syscall, but when I do that,
32 * strace -f -c bash -c 'ls ; ls' breaks, sometimes not tracing
33 * children at all, sometimes hanging when bash doesn't see the first
35 * The assembly looks functionally the same to me. This is
36 * gcc version 4.0.1 20050727 (Red Hat 4.0.1-5)
37 * in case it's a compiler bug.
39 syscall = UPT_SYSCALL_NR(r);
40 if((syscall >= NR_syscalls) || (syscall < 0))
42 else result = EXECUTE_SYSCALL(syscall, regs);
44 REGS_SET_SYSCALL_RETURN(r->skas.regs, result);
47 #ifdef UML_CONFIG_SYSCALL_DEBUG
48 record_syscall_end(index, result);