arch/arm64/tools/gen-cpucaps.awk

   1 #!/bin/awk -f
   2 # SPDX-License-Identifier: GPL-2.0
   3 # gen-cpucaps.awk: arm64 cpucaps header generator
   4 #
   5 # Usage: awk -f gen-cpucaps.awk cpucaps.txt
   6
   7 # Log an error and terminate
   8 function fatal(msg) {
   9         print "Error at line " NR ": " msg > "/dev/stderr"
  10         exit 1
  11 }
  12
  13 # skip blank lines and comment lines
  14 /^$/ { next }
  15 /^#/ { next }
  16
  17 BEGIN {
  18         print "#ifndef __ASM_CPUCAP_DEFS_H"
  19         print "#define __ASM_CPUCAP_DEFS_H"
  20         print ""
  21         print "/* Generated file - do not edit */"
  22         cap_num = 0
  23         print ""
  24 }
  25
  26 /^[vA-Z0-9_]+$/ {
  27         printf("#define ARM64_%-40s\t%d\n", $0, cap_num++)
  28         next
  29 }
  30
  31 END {
  32         printf("#define ARM64_NCAPS\t\t\t\t\t%d\n", cap_num)
  33         print ""
  34         print "#endif /* __ASM_CPUCAP_DEFS_H */"
  35 }
  36
  37 # Any lines not handled by previous rules are unexpected
  38 {
  39         fatal("unhandled statement")
  40 }