cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

gensyscalls.sh (2251B)

      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"