From 32e9a0d5ffaffe035f99188602d328665c43f38f Mon Sep 17 00:00:00 2001
From: Masahiro Yamada <masahiroy@kernel.org>
Date: Mon, 1 Mar 2021 15:29:03 +0100
Subject: [PATCH] ARM: 9067/1: syscalls: switch to generic syscallhdr.sh

Many architectures duplicate similar shell scripts.

This commit converts ARM to use scripts/syscallhdr.sh, and also
collects OABI/OEBI syscalls into unistd-eabi.h/unistd-oabi.h,
removing unistd-common.h.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
 arch/arm/include/uapi/asm/Kbuild   |  1 -
 arch/arm/include/uapi/asm/unistd.h |  1 -
 arch/arm/tools/Makefile            | 17 +++++-----------
 arch/arm/tools/syscallhdr.sh       | 31 ------------------------------
 4 files changed, 5 insertions(+), 45 deletions(-)
 delete mode 100644 arch/arm/tools/syscallhdr.sh

diff --git a/arch/arm/include/uapi/asm/Kbuild b/arch/arm/include/uapi/asm/Kbuild
index ce8573157774..63748af8bc9d 100644
--- a/arch/arm/include/uapi/asm/Kbuild
+++ b/arch/arm/include/uapi/asm/Kbuild
@@ -1,6 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
 
-generated-y += unistd-common.h
 generated-y += unistd-oabi.h
 generated-y += unistd-eabi.h
 generic-y += kvm_para.h
diff --git a/arch/arm/include/uapi/asm/unistd.h b/arch/arm/include/uapi/asm/unistd.h
index 93ecf8aa4fe5..ae7749e15726 100644
--- a/arch/arm/include/uapi/asm/unistd.h
+++ b/arch/arm/include/uapi/asm/unistd.h
@@ -24,7 +24,6 @@
 #include <asm/unistd-oabi.h>
 #endif
 
-#include <asm/unistd-common.h>
 #define __NR_sync_file_range2		__NR_arm_sync_file_range
 
 /*
diff --git a/arch/arm/tools/Makefile b/arch/arm/tools/Makefile
index d8be90f2bb41..87de1f63f649 100644
--- a/arch/arm/tools/Makefile
+++ b/arch/arm/tools/Makefile
@@ -8,7 +8,7 @@
 gen := arch/$(ARCH)/include/generated
 kapi := $(gen)/asm
 uapi := $(gen)/uapi/asm
-syshdr := $(srctree)/$(src)/syscallhdr.sh
+syshdr := $(srctree)/scripts/syscallhdr.sh
 sysnr := $(srctree)/$(src)/syscallnr.sh
 systbl := $(srctree)/scripts/syscalltbl.sh
 syscall := $(src)/syscall.tbl
@@ -17,7 +17,6 @@ gen-y := $(gen)/calls-oabi.S
 gen-y += $(gen)/calls-eabi.S
 kapi-hdrs-y := $(kapi)/unistd-nr.h
 kapi-hdrs-y += $(kapi)/mach-types.h
-uapi-hdrs-y := $(uapi)/unistd-common.h
 uapi-hdrs-y += $(uapi)/unistd-oabi.h
 uapi-hdrs-y += $(uapi)/unistd-eabi.h
 
@@ -41,10 +40,8 @@ $(kapi)/mach-types.h: $(src)/gen-mach-types $(src)/mach-types FORCE
 	$(call if_changed,gen_mach)
 
 quiet_cmd_syshdr = SYSHDR  $@
-      cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@' \
-		   '$(syshdr_abi_$(basetarget))' \
-		   '$(syshdr_pfx_$(basetarget))' \
-		   '__NR_SYSCALL_BASE'
+      cmd_syshdr = $(CONFIG_SHELL) $(syshdr) --abis $(abis) \
+		   --offset __NR_SYSCALL_BASE $< $@
 
 quiet_cmd_systbl = SYSTBL  $@
       cmd_systbl = $(CONFIG_SHELL) $(systbl) --abis $(abis) $< $@
@@ -53,15 +50,11 @@ quiet_cmd_sysnr  = SYSNR   $@
       cmd_sysnr  = $(CONFIG_SHELL) '$(sysnr)' '$<' '$@' \
 		   '$(syshdr_abi_$(basetarget))'
 
-syshdr_abi_unistd-common := common
-$(uapi)/unistd-common.h: $(syscall) $(syshdr) FORCE
-	$(call if_changed,syshdr)
-
-syshdr_abi_unistd-oabi := oabi
+$(uapi)/unistd-oabi.h: abis := common,oabi
 $(uapi)/unistd-oabi.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
-syshdr_abi_unistd-eabi := eabi
+$(uapi)/unistd-eabi.h: abis := common,eabi
 $(uapi)/unistd-eabi.h: $(syscall) $(syshdr) FORCE
 	$(call if_changed,syshdr)
 
diff --git a/arch/arm/tools/syscallhdr.sh b/arch/arm/tools/syscallhdr.sh
deleted file mode 100644
index 6b2f25cdd721..000000000000
--- a/arch/arm/tools/syscallhdr.sh
+++ /dev/null
@@ -1,31 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-
-in="$1"
-out="$2"
-my_abis=`echo "($3)" | tr ',' '|'`
-prefix="$4"
-offset="$5"
-
-fileguard=_ASM_ARM_`basename "$out" | sed \
-    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
-    -e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'`
-if echo $out | grep -q uapi; then
-    fileguard="_UAPI$fileguard"
-fi
-grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
-    echo "#ifndef ${fileguard}"
-    echo "#define ${fileguard} 1"
-    echo ""
-
-    while read nr abi name entry ; do
-	if [ -z "$offset" ]; then
-	    echo "#define __NR_${prefix}${name} $nr"
-	else
-	    echo "#define __NR_${prefix}${name} ($offset + $nr)"
-        fi
-    done
-
-    echo ""
-    echo "#endif /* ${fileguard} */"
-) > "$out"