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Thu, 31 Oct 2024 16:01:11 +0000 From: Andrea Cervesato Date: Thu, 31 Oct 2024 17:01:08 +0100 MIME-Version: 1.0 Message-Id: <20241031-generate_syscalls-v8-2-8e35a9d6783b@suse.com> References: <20241031-generate_syscalls-v8-0-8e35a9d6783b@suse.com> In-Reply-To: <20241031-generate_syscalls-v8-0-8e35a9d6783b@suse.com> To: ltp@lists.linux.it X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1730390470; l=8240; i=andrea.cervesato@suse.com; s=20240812; h=from:subject:message-id; bh=gII/U+XXh0j+9NpVoxV9uIay1M59y6YrHtbAjmp2oQk=; b=45vCpRwjE3y3dhhFU+YGFhR8x7U7h2/HEhUJr9qkzO7hZ2sv2tXkd5Cz2Mu1WkhmDJywGGZEO Ct4sdLPqoiSCR4xs2OvPRW/irRHl5+EMO+8qaP3Vswn8YNCyB51Jw19 X-Developer-Key: i=andrea.cervesato@suse.com; a=ed25519; pk=RG/nLJ5snb1tLKGwSORQXBJ5XA4juT0WF2Pc/lq9meo= X-Rspamd-Queue-Id: 5324221CDA X-Spamd-Result: default: False [-4.51 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FUZZY_BLOCKED(0.00)[rspamd.com]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:104:10:150:64:97:from]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; TO_DN_SOME(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; DKIM_TRACE(0.00)[suse.de:+]; RCPT_COUNT_THREE(0.00)[4]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from] X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Rspamd-Action: no action X-Virus-Scanned: clamav-milter 1.0.3 at in-3.smtp.seeweb.it X-Virus-Status: Clean Subject: [LTP] [PATCH v8 2/4] Add script to generate arch(s) dependant syscalls X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" From: Andrea Cervesato Add generate_arch.sh script which can be used to generate arch(s) dependant syscalls file. The way it works is pretty simple: for each architecture defined into supported-arch.txt, compile kernel headers, extract the list of syscalls and generate a .in file containing all of them, associated with their own syscall's number. The way syscalls files are generated, passes through a C application which is automatically checking the availability of the syscalls in the user space environment. Reviewed-by: Li Wang Reviewed-by: Cyril Hrubis Reviewed-by: Petr Vorel Signed-off-by: Andrea Cervesato --- include/lapi/syscalls/{aarch64.in => arm64.in} | 0 include/lapi/syscalls/generate_arch.sh | 206 +++++++++++++++++++++ .../lapi/syscalls/{loongarch.in => loongarch64.in} | 0 include/lapi/syscalls/{mips_n64.in => mips64.in} | 0 .../lapi/syscalls/{mips_n32.in => mips64n32.in} | 0 include/lapi/syscalls/{mips_o32.in => mipso32.in} | 0 include/lapi/syscalls/{hppa.in => parisc.in} | 0 include/lapi/syscalls/supported-arch.txt | 12 +- 8 files changed, 212 insertions(+), 6 deletions(-) diff --git a/include/lapi/syscalls/aarch64.in b/include/lapi/syscalls/arm64.in similarity index 100% rename from include/lapi/syscalls/aarch64.in rename to include/lapi/syscalls/arm64.in diff --git a/include/lapi/syscalls/generate_arch.sh b/include/lapi/syscalls/generate_arch.sh new file mode 100755 index 0000000000000000000000000000000000000000..e4daf6b40b6d5fa554f7abd544ed2f4a53e7d283 --- /dev/null +++ b/include/lapi/syscalls/generate_arch.sh @@ -0,0 +1,206 @@ +#!/bin/sh -eu +# SPDX-License-Identifier: GPL-2.0-or-later +# +# This is an adaptation of the update-tables.sh script, included in the +# syscalls-table project (https://github.com/hrw/syscalls-table) and released +# under the MIT license. +# +# Author: Andrea Cervesato + +if [ "$#" -eq "0" ]; then + echo "Please provide kernel sources:" + echo "" + echo "$0 path/to/Linux/kernel/sources" + echo "" + exit 1 +fi + +KERNELSRC="$1" + +# to keep sorting in order +export LC_ALL=C + +if [ ! -d "$KERNELSRC" ]; then + echo "$KERNELSRC is not a directory" + exit 1 +fi + +if [ ! -e "${KERNELSRC}/Makefile" ]; then + echo "No Makefile in $KERNELSRC directory" + exit 1 +fi + +TEMP="$(mktemp -d)" +KVER="$(make -C ${KERNELSRC} kernelversion -s)" + +SCRIPT_DIR="$(realpath $(dirname "$0"))" +SUPPORTED_ARCH="${SCRIPT_DIR}/supported-arch.txt" +LINUX_HEADERS="${TEMP}/headers" + +grab_syscall_names_from_tables() { + for tbl_file in $(find ${KERNELSRC}/arch -name syscall*.tbl); do + grep -E -v "(^#|^$|sys_ni_syscall)" $tbl_file | + awk '{ print $3 }' >>${TEMP}/syscall-names.tosort + done + + drop_bad_entries +} + +grab_syscall_names_from_unistd_h() { + grep -E -h "^#define __NR_" \ + ${LINUX_HEADERS}/usr/include/asm/unistd*.h \ + ${LINUX_HEADERS}/usr/include/asm-generic/unistd.h \ + >${TEMP}/syscall-names.tosort + + drop_bad_entries +} + +drop_bad_entries() { + grep -E -v "(unistd.h|NR3264|__NR_syscall|__SC_COMP|__NR_.*Linux|__NR_FAST)" \ + ${TEMP}/syscall-names.tosort | + grep -E -v "(__SYSCALL|SYSCALL_BASE|SYSCALL_MASK)" | + sed -e "s/#define\s*__NR_//g" -e "s/\s.*//g" | + sort -u >${TEMP}/syscall-names.txt +} + +generate_table() { + echo "- $arch" + + if [ "$bits" -eq "32" ]; then + extraflags="${extraflags} -D__BITS_PER_LONG=32" + fi + + local uppercase_arch=$(echo "$arch" | tr '[:lower:]' '[:upper:]') + + # ignore any error generated by gcc. We want to obtain all the + # available architecture syscalls for the current platform and to handle + # only supported architectures later on + gcc ${TEMP}/list-syscalls.c -U__LP64__ -U__ILP32__ -U__i386__ \ + -D${uppercase_arch} \ + -D__${arch}__ ${extraflags} \ + -I ${LINUX_HEADERS}/usr/include/ \ + -o ${TEMP}/list-syscalls || true + + ${TEMP}/list-syscalls >"${TEMP}/${arch}.in.tosort" + + sort -k2,2n "${TEMP}/${arch}.in.tosort" >"${TEMP}/${arch}.in" +} + +generate_list_syscalls_c() { + ( + echo + echo " + #include + #include + + int main(void) + { + " + for syscall in $(cat ${TEMP}/syscall-names.txt); do + echo " + #ifdef __NR_$syscall + printf(\"$syscall %d\\\n\", __NR_$syscall); + #endif + " + done + echo " return 0; + }" + ) >${TEMP}/list-syscalls.c +} + +export_headers() { + make -s -C ${KERNELSRC} ARCH=${arch} O=${LINUX_HEADERS} \ + headers_install >/dev/null 2>&1 +} + +do_all_tables() { + for archdir in ${KERNELSRC}/arch/*; do + arch=$(basename $archdir) + + bits=64 + extraflags= + + case ${arch} in + Kconfig) + continue + ;; + um) + continue + ;; + esac + + export_headers + grab_syscall_names_from_unistd_h + + case ${arch} in + arm) + bits=32 + arch=armoabi extraflags= generate_table + arch=arm extraflags=-D__ARM_EABI__ generate_table + ;; + loongarch) + # 32-bit variant of loongarch may appear + arch=loongarch64 extraflags=-D_LOONGARCH_SZLONG=64 generate_table + ;; + mips) + arch=mips64 extraflags=-D_MIPS_SIM=_MIPS_SIM_ABI64 generate_table + bits=32 + arch=mipso32 extraflags=-D_MIPS_SIM=_MIPS_SIM_ABI32 generate_table + arch=mips64n32 extraflags=-D_MIPS_SIM=_MIPS_SIM_NABI32 generate_table + ;; + powerpc) + generate_table + arch=powerpc64 generate_table + ;; + riscv) + arch=riscv64 extraflags=-D__LP64__ generate_table + bits=32 + arch=riscv32 extraflags=-D__SIZEOF_POINTER__=4 generate_table + ;; + s390) + bits=32 + generate_table + bits=64 + arch=s390x generate_table + ;; + sparc) + bits=32 + extraflags=-D__32bit_syscall_numbers__ generate_table + bits=64 + arch=sparc64 extraflags=-D__arch64__ generate_table + ;; + x86) + arch=x86_64 extraflags=-D__LP64__ generate_table + bits=32 + arch=i386 generate_table + arch=x32 extraflags=-D__ILP32__ generate_table + ;; + arc | csky | hexagon | m68k | microblaze | nios2 | openrisc | sh | xtensa) + bits=32 generate_table + ;; + *) + generate_table + ;; + esac + done +} + +copy_supported_arch() { + while IFS= read -r arch; do + if [ -f "${TEMP}/${arch}.in" ]; then + echo "- ${arch}" + cp "${TEMP}/${arch}.in" "${SCRIPT_DIR}/${arch}.in" + fi + done <${SUPPORTED_ARCH} +} + +echo "Temporary directory ${TEMP}" +echo "Extracting syscalls" + +grab_syscall_names_from_tables +generate_list_syscalls_c + +do_all_tables + +echo "Copying supported syscalls" +copy_supported_arch diff --git a/include/lapi/syscalls/loongarch.in b/include/lapi/syscalls/loongarch64.in similarity index 100% rename from include/lapi/syscalls/loongarch.in rename to include/lapi/syscalls/loongarch64.in diff --git a/include/lapi/syscalls/mips_n64.in b/include/lapi/syscalls/mips64.in similarity index 100% rename from include/lapi/syscalls/mips_n64.in rename to include/lapi/syscalls/mips64.in diff --git a/include/lapi/syscalls/mips_n32.in b/include/lapi/syscalls/mips64n32.in similarity index 100% rename from include/lapi/syscalls/mips_n32.in rename to include/lapi/syscalls/mips64n32.in diff --git a/include/lapi/syscalls/mips_o32.in b/include/lapi/syscalls/mipso32.in similarity index 100% rename from include/lapi/syscalls/mips_o32.in rename to include/lapi/syscalls/mipso32.in diff --git a/include/lapi/syscalls/hppa.in b/include/lapi/syscalls/parisc.in similarity index 100% rename from include/lapi/syscalls/hppa.in rename to include/lapi/syscalls/parisc.in diff --git a/include/lapi/syscalls/supported-arch.txt b/include/lapi/syscalls/supported-arch.txt index c18aa38cf4546cdf3ac8c89a45bd1b202ffa7711..c5c5191ac08482d89f0a8c39dfae936538f58f7f 100644 --- a/include/lapi/syscalls/supported-arch.txt +++ b/include/lapi/syscalls/supported-arch.txt @@ -1,13 +1,13 @@ -aarch64 arc +arm64 arm -hppa i386 ia64 -loongarch -mips_n32 -mips_n64 -mips_o32 +loongarch64 +mips64n32 +mips64 +mipso32 +parisc powerpc64 powerpc s390x -- 2.43.0 -- Mailing list info: https://lists.linux.it/listinfo/ltp