LXR qemu/scripts/gensyscalls.sh

   1#!/bin/sh
   2#
   3# Update syscall_nr.h files from linux headers asm-generic/unistd.h
   4#
   5# This code is licensed under the GPL version 2 or later.  See
   6# the COPYING file in the top-level directory.
   7#
   8
   9linux="$1"
  10output="$2"
  11
  12TMP=$(mktemp -d)
  13
  14if [ "$linux" = "" ] ; then
  15    echo "Needs path to linux source tree" 1>&2
  16    exit 1
  17fi
  18
  19if [ "$output" = "" ] ; then
  20    output="$PWD"
  21fi
  22
  23upper()
  24{
  25    echo "$1" | tr "[:lower:]" "[:upper:]" | tr "[:punct:]" "_"
  26}
  27
  28qemu_arch()
  29{
  30    case "$1" in
  31    arm64)
  32        echo "aarch64"
  33        ;;
  34    *)
  35        echo "$1"
  36        ;;
  37    esac
  38}
  39
  40read_includes()
  41{
  42    arch=$1
  43    bits=$2
  44
  45     cpp -P -nostdinc -fdirectives-only \
  46        -D_UAPI_ASM_$(upper ${arch})_BITSPERLONG_H \
  47        -D__BITS_PER_LONG=${bits} \
  48        -I${linux}/arch/${arch}/include/uapi/ \
  49        -I${linux}/include/uapi \
  50        -I${TMP} \
  51        "${linux}/arch/${arch}/include/uapi/asm/unistd.h"
  52}
  53
  54filter_defines()
  55{
  56    grep -e "#define __NR_" -e "#define __NR3264"
  57}
  58
  59rename_defines()
  60{
  61    sed "s/ __NR_/ TARGET_NR_/g;s/(__NR_/(TARGET_NR_/g"
  62}
  63
  64evaluate_values()
  65{
  66    sed "s/#define TARGET_NR_/QEMU TARGET_NR_/" | \
  67    cpp -P -nostdinc | \
  68    sed "s/^QEMU /#define /"
  69}
  70
  71generate_syscall_nr()
  72{
  73    arch=$1
  74    bits=$2
  75    file="$3"
  76    guard="$(upper LINUX_USER_$(qemu_arch $arch)_$(basename "$file"))"
  77
  78    (echo "/*"
  79    echo " * This file contains the system call numbers."
  80    echo " * Do not modify."
  81    echo " * This file is generated by scripts/gensyscalls.sh"
  82    echo " */"
  83    echo "#ifndef ${guard}"
  84    echo "#define ${guard}"
  85    echo
  86    read_includes $arch $bits | filter_defines | rename_defines | \
  87                                evaluate_values | sort -n -k 3
  88    echo
  89    echo "#endif /* ${guard} */") > "$file"
  90}
  91
  92mkdir "$TMP/asm"
  93> "$TMP/asm/bitsperlong.h"
  94
  95generate_syscall_nr arm64 64 "$output/linux-user/aarch64/syscall_nr.h"
  96generate_syscall_nr nios2 32 "$output/linux-user/nios2/syscall_nr.h"
  97generate_syscall_nr openrisc 32 "$output/linux-user/openrisc/syscall_nr.h"
  98
  99generate_syscall_nr riscv 32 "$output/linux-user/riscv/syscall32_nr.h"
 100generate_syscall_nr riscv 64 "$output/linux-user/riscv/syscall64_nr.h"
 101generate_syscall_nr hexagon 32 "$output/linux-user/hexagon/syscall_nr.h"
 102rm -fr "$TMP"
 103