#!/bin/sh
#
# This is a wrapper for xz to compress the kernel image using appropriate
# compression options depending on the architecture.
#
# Author: Lasse Collin <lasse.collin@tukaani.org>
#
# This file has been put into the public domain.
# You can do whatever you want with this file.
#

global BCJ := ''
global LZMA2OPTS := ''

matchstr $SRCARCH {
	x86 {            global BCJ := '--x86' }
	powerpc {        global BCJ := '--powerpc' }
	ia64 {           global BCJ := '--ia64'; global LZMA2OPTS := 'pb=4' }
	arm {            global BCJ := '--arm' }
	sparc {          global BCJ := '--sparc' }
}

exec xz --check=crc32 $BCJ --lzma2=$LZMA2OPTS,dict=32MiB
(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(LhsName name:BCJ) op:Equal rhs:{(SQ )} spids:[31])]
      spids: [31]
    )
    (Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(LhsName name:LZMA2OPTS) op:Equal rhs:{(SQ )} spids:[33])]
      spids: [33]
    )
    (Case
      to_match: {($ VSub_Name "$SRCARCH")}
      arms: [
        (case_arm
          pat_list: [{(x86)}]
          action: [
            (Assignment
              keyword: Assign_None
              pairs: [(assign_pair lhs:(LhsName name:BCJ) op:Equal rhs:{(--x86)} spids:[46])]
              spids: [46]
            )
          ]
          spids: [43 44 49 -1]
        )
        (case_arm
          pat_list: [{(powerpc)}]
          action: [
            (Assignment
              keyword: Assign_None
              pairs: [(assign_pair lhs:(LhsName name:BCJ) op:Equal rhs:{(--powerpc)} spids:[55])]
              spids: [55]
            )
          ]
          spids: [52 53 58 -1]
        )
        (case_arm
          pat_list: [{(ia64)}]
          action: [
            (Sentence
              child: 
                (Assignment
                  keyword: Assign_None
                  pairs: [(assign_pair lhs:(LhsName name:BCJ) op:Equal rhs:{(--ia64)} spids:[64])]
                  spids: [64]
                )
              terminator: <Op_Semi ";">
            )
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:LZMA2OPTS)
                  op: Equal
                  rhs: {(Lit_VarLike "pb=") (4)}
                  spids: [68]
                )
              ]
              spids: [68]
            )
          ]
          spids: [61 62 72 -1]
        )
        (case_arm
          pat_list: [{(arm)}]
          action: [
            (Assignment
              keyword: Assign_None
              pairs: [(assign_pair lhs:(LhsName name:BCJ) op:Equal rhs:{(--arm)} spids:[78])]
              spids: [78]
            )
          ]
          spids: [75 76 81 -1]
        )
        (case_arm
          pat_list: [{(sparc)}]
          action: [
            (Assignment
              keyword: Assign_None
              pairs: [(assign_pair lhs:(LhsName name:BCJ) op:Equal rhs:{(--sparc)} spids:[87])]
              spids: [87]
            )
          ]
          spids: [84 85 90 -1]
        )
      ]
      spids: [36 40 92]
    )
    (C {(exec)} {(xz)} {(--check) (Lit_Other "=") (crc32)} {($ VSub_Name "$BCJ")} 
      {(--lzma2) (Lit_Other "=") ($ VSub_Name "$LZMA2OPTS") (Lit_Comma ",") (Lit_VarLike "dict=") 
        (32MiB)
      }
    )
  ]
)