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    The following form allows you to view linux man pages.

    Command:

    getunwind

    
    
    

    SYNOPSIS

           #include <syscall.h>
           #include <linux/unwind.h>
    
           long getunwind(void *buf, size_t buf_size);
    
           Note: There is no glibc wrapper for this system call; see NOTES.
    
    
    

    DESCRIPTION

           Note: this function is obsolete.
    
           The  IA-64-specific  getunwind()  system  call copies the kernel's call
           frame unwind data into the buffer pointed to by  buf  and  returns  the
           size of the unwind data; this data describes the gate page (kernel code
           that is mapped into user space).
    
           The size of the buffer buf is  specified  in  buf_size.   The  data  is
           copied  only  if  buf_size  is greater than or equal to the size of the
           unwind data and buf is not NULL; otherwise, no data is copied, and  the
           call  succeeds,  returning  the  size that would be needed to store the
           unwind data.
    
           The first part of the unwind data contains an unwind table.   The  rest
           contains  the  associated  unwind  information, in no particular order.
           The unwind table contains entries of the following form:
    
               u64 start;      (64-bit address of start of function)
               u64 end;        (64-bit address of end of function)
               u64 info;       (BUF-relative offset to unwind info)
    
           An entry whose start value is zero indicates the end of the table.  For
           more  information  about the format, see the IA-64 Software Conventions
           and Runtime Architecture manual.
    
    
    

    RETURN VALUE

           On success, getunwind() returns the size of unwind table.  On error, -1
           is returned and errno is set to indicate the error.
    
    
    

    ERRORS

           getunwind()  fails  with  the  error EFAULT if the unwind info can't be
           stored in the space specified by buf.
    
    
    

    VERSIONS

           This system call is available since Linux 2.4.
    
    
    

    CONFORMING TO

           This system call is Linux-specific, and is available only on the  IA-64
           architecture.
    
    
    

    NOTES

           This  system  call  has  been deprecated.  The modern way to obtain the
           kernel's unwind data is via the gate  DSO.   The  address  of  the  ELF
    
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