#autoload

local points=(
  'c[trace system calls]'
  'i[trace I/O]'
  'n[trace namei translations]'
  's[trace signal processing]'
  'u[trace user data]'
  '+[trace the default points]'
)

case $OSTYPE in
  dragonfly*|freebsd*|netbsd*)
    points+=(
      'w[context switches]'
    )
    ;|
  freebsd*|openbsd*)
    points+=(
      't[trace various structures]'
    )
    ;|
  freebsd*)
    points+=(
      'f[trace page faults]'
      'p[trace capability check failures]'
      'y[trace sysctl(3) requests]'
    )
    ;;
  netbsd*)
    points+=(
      'A[trace all tracepoints]'
      'a[trace exec arguments]'
      'e[trace emulation changes]'
      'f[trace open file descriptors after exec]'
      'S[trace MIB access (sysctl)]'
      'v[trace exec environment]'
      '-[do not trace following trace points]'
    )
    ;;
  openbsd*)
    points+=(
      'p[trace violation of pledge(2) restrictions]'
      'x[trace argument vector in execve(2)]'
      'X[trace environment in execve(2)]'
    )
    ;;
easc

_values -s '' 'ktrace point' $points