System call table generation support is provided for alpha, ia64, m68k, microblaze, mips, parisc, powerpc, sh, sparc and xtensa architectures. The implementat- ions are almost similar across all the above archte- ctures. In order to reduce the source code across all the above architectures, create common ".sh" files and keep it in the common directory, script/. This will be a generic scripts which can use for all the above architectures.
This patch depends on; https://lore.kernel.org/lkml/1546439331-18646-1-git-send-email-firoz.khan@li...
Firoz Khan (2): alpha: remove nargs from __SYSCALL alpha: generate uapi header and syscall table header files
arch/alpha/kernel/syscalls/Makefile | 11 ++++++++-- arch/alpha/kernel/syscalls/syscallhdr.sh | 36 -------------------------------- arch/alpha/kernel/syscalls/syscalltbl.sh | 32 ---------------------------- arch/alpha/kernel/systbls.S | 2 +- 4 files changed, 10 insertions(+), 71 deletions(-) delete mode 100644 arch/alpha/kernel/syscalls/syscallhdr.sh delete mode 100644 arch/alpha/kernel/syscalls/syscalltbl.sh
The __SYSCALL macro's arguments are system call number, system call entry name and number of arguments for the system call.
Argument- nargs in __SYSCALL(nr, entry, nargs) is neither calculated nor used anywhere. So it would be better to keep the implementaion as __SYSCALL(nr, entry). This will unifies the implementation with some other architetures too.
Signed-off-by: Firoz Khan firoz.khan@linaro.org --- arch/alpha/kernel/syscalls/syscalltbl.sh | 4 ++-- arch/alpha/kernel/systbls.S | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/alpha/kernel/syscalls/syscalltbl.sh b/arch/alpha/kernel/syscalls/syscalltbl.sh index 85d78d9..904b8e6 100644 --- a/arch/alpha/kernel/syscalls/syscalltbl.sh +++ b/arch/alpha/kernel/syscalls/syscalltbl.sh @@ -13,10 +13,10 @@ emit() { t_entry="$3"
while [ $t_nxt -lt $t_nr ]; do - printf "__SYSCALL(%s, sys_ni_syscall, )\n" "${t_nxt}" + printf "__SYSCALL(%s,sys_ni_syscall)\n" "${t_nxt}" t_nxt=$((t_nxt+1)) done - printf "__SYSCALL(%s, %s, )\n" "${t_nxt}" "${t_entry}" + printf "__SYSCALL(%s,%s)\n" "${t_nxt}" "${t_entry}" }
grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | ( diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S index 9704f22..36c94c8 100644 --- a/arch/alpha/kernel/systbls.S +++ b/arch/alpha/kernel/systbls.S @@ -7,7 +7,7 @@
#include <asm/unistd.h>
-#define __SYSCALL(nr, entry, nargs) .quad entry +#define __SYSCALL(nr, entry) .quad entry .data .align 3 .globl sys_call_table
Unified system call table generation script must be run to generate unistd_32.h and syscall_table.h files. This patch will have changes which will invokes the script.
This patch will generate unistd_32.h and syscall_table.h files by the syscall table generation script invoked by alpha/Makefile and the generated files against the removed files must be identical.
The generated uapi header file will be included in uapi/- asm/unistd.h and generated system call table header file will be included by kernel/systbls.S file.
Signed-off-by: Firoz Khan firoz.khan@linaro.org --- arch/alpha/kernel/syscalls/Makefile | 11 ++++++++-- arch/alpha/kernel/syscalls/syscallhdr.sh | 36 -------------------------------- arch/alpha/kernel/syscalls/syscalltbl.sh | 32 ---------------------------- 3 files changed, 9 insertions(+), 70 deletions(-) delete mode 100644 arch/alpha/kernel/syscalls/syscallhdr.sh delete mode 100644 arch/alpha/kernel/syscalls/syscalltbl.sh
diff --git a/arch/alpha/kernel/syscalls/Makefile b/arch/alpha/kernel/syscalls/Makefile index 659faef..75c7421 100644 --- a/arch/alpha/kernel/syscalls/Makefile +++ b/arch/alpha/kernel/syscalls/Makefile @@ -6,8 +6,9 @@ _dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)') \ $(shell [ -d '$(kapi)' ] || mkdir -p '$(kapi)')
syscall := $(srctree)/$(src)/syscall.tbl -syshdr := $(srctree)/$(src)/syscallhdr.sh -systbl := $(srctree)/$(src)/syscalltbl.sh +syshdr := $(srctree)/scripts/syscallhdr.sh +sysnr := $(srctree)/scripts/syscallnr.sh +systbl := $(srctree)/scripts/syscalltbl.sh
quiet_cmd_syshdr = SYSHDR $@ cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@' \ @@ -15,6 +16,12 @@ quiet_cmd_syshdr = SYSHDR $@ '$(syshdr_pfx_$(basetarget))' \ '$(syshdr_offset_$(basetarget))'
+quiet_cmd_sysnr = SYSNR $@ + cmd_sysnr = $(CONFIG_SHELL) '$(sysnr)' '$<' '$@' \ + '$(sysnr_abis_$(basetarget))' \ + '$(sysnr_pfx_$(basetarget))' \ + '$(sysnr_offset_$(basetarget))' + quiet_cmd_systbl = SYSTBL $@ cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@' \ '$(systbl_abis_$(basetarget))' \ diff --git a/arch/alpha/kernel/syscalls/syscallhdr.sh b/arch/alpha/kernel/syscalls/syscallhdr.sh deleted file mode 100644 index e5b99bd..0000000 --- a/arch/alpha/kernel/syscalls/syscallhdr.sh +++ /dev/null @@ -1,36 +0,0 @@ -#!/bin/sh -# SPDX-License-Identifier: GPL-2.0 - -in="$1" -out="$2" -my_abis=`echo "($3)" | tr ',' '|'` -prefix="$4" -offset="$5" - -fileguard=_UAPI_ASM_ALPHA_`basename "$out" | sed \ - -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \ - -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'` -grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | ( - printf "#ifndef %s\n" "${fileguard}" - printf "#define %s\n" "${fileguard}" - printf "\n" - - nxt=0 - while read nr abi name entry ; do - if [ -z "$offset" ]; then - printf "#define __NR_%s%s\t%s\n" \ - "${prefix}" "${name}" "${nr}" - else - printf "#define __NR_%s%s\t(%s + %s)\n" \ - "${prefix}" "${name}" "${offset}" "${nr}" - fi - nxt=$((nr+1)) - done - - printf "\n" - printf "#ifdef __KERNEL__\n" - printf "#define __NR_syscalls\t%s\n" "${nxt}" - printf "#endif\n" - printf "\n" - printf "#endif /* %s */" "${fileguard}" -) > "$out" diff --git a/arch/alpha/kernel/syscalls/syscalltbl.sh b/arch/alpha/kernel/syscalls/syscalltbl.sh deleted file mode 100644 index 904b8e6..0000000 --- a/arch/alpha/kernel/syscalls/syscalltbl.sh +++ /dev/null @@ -1,32 +0,0 @@ -#!/bin/sh -# SPDX-License-Identifier: GPL-2.0 - -in="$1" -out="$2" -my_abis=`echo "($3)" | tr ',' '|'` -my_abi="$4" -offset="$5" - -emit() { - t_nxt="$1" - t_nr="$2" - t_entry="$3" - - while [ $t_nxt -lt $t_nr ]; do - printf "__SYSCALL(%s,sys_ni_syscall)\n" "${t_nxt}" - t_nxt=$((t_nxt+1)) - done - printf "__SYSCALL(%s,%s)\n" "${t_nxt}" "${t_entry}" -} - -grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | ( - nxt=0 - if [ -z "$offset" ]; then - offset=0 - fi - - while read nr abi name entry ; do - emit $((nxt+offset)) $((nr+offset)) $entry - nxt=$((nr+1)) - done -) > "$out"
-
Firoz Khan