[PATCH] ARM: syscalls: switch to generic syscalltbl.sh

* [PATCH] ARM: syscalls: switch to generic syscalltbl.sh
@ 2021-03-01 14:28 ` Masahiro Yamada
  0 siblings, 0 replies; 10+ messages in thread
From: Masahiro Yamada @ 2021-03-01 14:28 UTC (permalink / raw)
  To: patches
  Cc: linux-kernel, Masahiro Yamada, Abbott Liu, Ard Biesheuvel,
	Florian Fainelli, Jens Axboe, Linus Walleij, Russell King,
	linux-arm-kernel

Many architectures duplicate similar shell scripts.

This commit converts ARM to use scripts/syscalltbl.sh.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

KernelVersion: v5.12-rc1

 arch/arm/kernel/entry-common.S |  8 ++++----
 arch/arm/tools/Makefile        |  9 ++++-----
 arch/arm/tools/syscalltbl.sh   | 22 ----------------------
 3 files changed, 8 insertions(+), 31 deletions(-)
 delete mode 100644 arch/arm/tools/syscalltbl.sh

diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index e0d7833a1827..7f0b7aba1498 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -344,20 +344,19 @@ ENTRY(\sym)
 	.size	\sym, . - \sym
 	.endm
 
-#define NATIVE(nr, func) syscall nr, func
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, native)
+#define __SYSCALL(nr, func) syscall nr, func
 
 /*
  * This is the syscall table declaration for native ABI syscalls.
  * With EABI a couple syscalls are obsolete and defined as sys_ni_syscall.
  */
 	syscall_table_start sys_call_table
-#define COMPAT(nr, native, compat) syscall nr, native
 #ifdef CONFIG_AEABI
 #include <calls-eabi.S>
 #else
 #include <calls-oabi.S>
 #endif
-#undef COMPAT
 	syscall_table_end sys_call_table
 
 /*============================================================================
@@ -455,7 +454,8 @@ ENDPROC(sys_oabi_readahead)
  * using the compatibility syscall entries.
  */
 	syscall_table_start sys_oabi_call_table
-#define COMPAT(nr, native, compat) syscall nr, compat
+#undef __SYSCALL_WITH_COMPAT
+#define __SYSCALL_WITH_COMPAT(nr, native, compat)	__SYSCALL(nr, compat)
 #include <calls-oabi.S>
 	syscall_table_end sys_oabi_call_table
 
diff --git a/arch/arm/tools/Makefile b/arch/arm/tools/Makefile
index 3654f979851b..d8be90f2bb41 100644
--- a/arch/arm/tools/Makefile
+++ b/arch/arm/tools/Makefile
@@ -10,7 +10,7 @@ kapi := $(gen)/asm
 uapi := $(gen)/uapi/asm
 syshdr := $(srctree)/$(src)/syscallhdr.sh
 sysnr := $(srctree)/$(src)/syscallnr.sh
-systbl := $(srctree)/$(src)/syscalltbl.sh
+systbl := $(srctree)/scripts/syscalltbl.sh
 syscall := $(src)/syscall.tbl
 
 gen-y := $(gen)/calls-oabi.S
@@ -47,8 +47,7 @@ quiet_cmd_syshdr = SYSHDR  $@
 		   '__NR_SYSCALL_BASE'
 
 quiet_cmd_systbl = SYSTBL  $@
-      cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@' \
-		   '$(systbl_abi_$(basetarget))'
+      cmd_systbl = $(CONFIG_SHELL) $(systbl) --abis $(abis) $< $@
 
 quiet_cmd_sysnr  = SYSNR   $@
       cmd_sysnr  = $(CONFIG_SHELL) '$(sysnr)' '$<' '$@' \
@@ -70,10 +69,10 @@ sysnr_abi_unistd-nr := common,oabi,eabi,compat
 $(kapi)/unistd-nr.h: $(syscall) $(sysnr) FORCE
 	$(call if_changed,sysnr)
 
-systbl_abi_calls-oabi := common,oabi
+$(gen)/calls-oabi.S: abis := common,oabi
 $(gen)/calls-oabi.S: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
 
-systbl_abi_calls-eabi := common,eabi
+$(gen)/calls-eabi.S: abis := common,eabi
 $(gen)/calls-eabi.S: $(syscall) $(systbl) FORCE
 	$(call if_changed,systbl)
diff --git a/arch/arm/tools/syscalltbl.sh b/arch/arm/tools/syscalltbl.sh
deleted file mode 100644
index ae7e93cfbfd3..000000000000
--- a/arch/arm/tools/syscalltbl.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
-    while read nr abi name entry compat; do
-        if [ "$abi" = "eabi" -a -n "$compat" ]; then
-            echo "$in: error: a compat entry for an EABI syscall ($name) makes no sense" >&2
-            exit 1
-        fi
-
-	if [ -n "$entry" ]; then
-            if [ -z "$compat" ]; then
-                echo "NATIVE($nr, $entry)"
-            else
-                echo "COMPAT($nr, $entry, $compat)"
-            fi
-        fi
-    done
-) > "$out"
-- 
2.27.0


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