[PATCH v2 7/7] perf build: Remove Makefile.syscalls

Ian Rogers
2025-02-10T16:51:29Z

Now a single beauty file is generated and used by all architectures,
remove the per-architecture Makefiles, Kbuild files and previous
generator script.

Note: there was conversation with Charlie Jenkins
<charlie@rivosinc.com> and they'd written an alternate approach to
support multiple architectures:
https://lore.kernel.org/all/20250114-perf_syscall_arch_runtime-v1-1-5b304e408e11@rivosinc.com/
It would have been better to have helped Charlie fix their series (my
apologies) but they agreed that the approach taken here was likely
best for longer term maintainability:
https://lore.kernel.org/lkml/Z6Jk_UN9i69QGqUj@ghost/

Signed-off-by: Ian Rogers <irogers@google.com> Reviewed-by: Howard Chu
<howardchu95@gmail.com>
---
tools/perf/Makefile.perf | 1 -
tools/perf/arch/alpha/entry/syscalls/Kbuild | 2 -
.../alpha/entry/syscalls/Makefile.syscalls | 5 --
tools/perf/arch/arc/entry/syscalls/Kbuild | 2 -
.../arch/arc/entry/syscalls/Makefile.syscalls | 3 -
tools/perf/arch/arm/entry/syscalls/Kbuild | 4 -
.../arch/arm/entry/syscalls/Makefile.syscalls | 2 -
tools/perf/arch/arm64/entry/syscalls/Kbuild | 3 -
.../arm64/entry/syscalls/Makefile.syscalls | 6 --
tools/perf/arch/csky/entry/syscalls/Kbuild | 2 -
.../csky/entry/syscalls/Makefile.syscalls | 3 -
.../perf/arch/loongarch/entry/syscalls/Kbuild | 2 -
.../entry/syscalls/Makefile.syscalls | 3 -
tools/perf/arch/mips/entry/syscalls/Kbuild | 2 -
.../mips/entry/syscalls/Makefile.syscalls | 5 --
tools/perf/arch/parisc/entry/syscalls/Kbuild | 3 -
.../parisc/entry/syscalls/Makefile.syscalls | 6 --
tools/perf/arch/powerpc/entry/syscalls/Kbuild | 3 -
.../powerpc/entry/syscalls/Makefile.syscalls | 6 --
tools/perf/arch/riscv/entry/syscalls/Kbuild | 2 -
.../riscv/entry/syscalls/Makefile.syscalls | 4 -
tools/perf/arch/s390/entry/syscalls/Kbuild | 2 -
.../s390/entry/syscalls/Makefile.syscalls | 5 --
tools/perf/arch/sh/entry/syscalls/Kbuild | 2 -
.../arch/sh/entry/syscalls/Makefile.syscalls | 4 -
tools/perf/arch/sparc/entry/syscalls/Kbuild | 3 -
.../sparc/entry/syscalls/Makefile.syscalls | 5 --
tools/perf/arch/x86/entry/syscalls/Kbuild | 3 -
.../arch/x86/entry/syscalls/Makefile.syscalls | 6 --
tools/perf/arch/xtensa/entry/syscalls/Kbuild | 2 -
.../xtensa/entry/syscalls/Makefile.syscalls | 4 -
tools/perf/scripts/Makefile.syscalls | 61 ---------------
tools/perf/scripts/syscalltbl.sh | 76 -------------------
33 files changed, 242 deletions(-)
delete mode 100644 tools/perf/arch/alpha/entry/syscalls/Kbuild
delete mode 100644 tools/perf/arch/alpha/entry/syscalls/Makefile.syscalls
delete mode 100644 tools/perf/arch/arc/entry/syscalls/Kbuild
delete mode 100644 tools/perf/arch/arc/entry/syscalls/Makefile.syscalls
delete mode 100644 tools/perf/arch/arm/entry/syscalls/Kbuild
delete mode 100644 tools/perf/arch/arm/entry/syscalls/Makefile.syscalls
delete mode 100644 tools/perf/arch/arm64/entry/syscalls/Kbuild
delete mode 100644 tools/perf/arch/arm64/entry/syscalls/Makefile.syscalls
delete mode 100644 tools/perf/arch/csky/entry/syscalls/Kbuild
delete mode 100644 tools/perf/arch/csky/entry/syscalls/Makefile.syscalls
delete mode 100644 tools/perf/arch/loongarch/entry/syscalls/Kbuild
delete mode 100644 tools/perf/arch/loongarch/entry/syscalls/Makefile.syscalls
delete mode 100644 tools/perf/arch/mips/entry/syscalls/Kbuild
delete mode 100644 tools/perf/arch/mips/entry/syscalls/Makefile.syscalls
delete mode 100644 tools/perf/arch/parisc/entry/syscalls/Kbuild
delete mode 100644 tools/perf/arch/parisc/entry/syscalls/Makefile.syscalls
delete mode 100644 tools/perf/arch/powerpc/entry/syscalls/Kbuild
delete mode 100644 tools/perf/arch/powerpc/entry/syscalls/Makefile.syscalls
delete mode 100644 tools/perf/arch/riscv/entry/syscalls/Kbuild
delete mode 100644 tools/perf/arch/riscv/entry/syscalls/Makefile.syscalls
delete mode 100644 tools/perf/arch/s390/entry/syscalls/Kbuild
delete mode 100644 tools/perf/arch/s390/entry/syscalls/Makefile.syscalls
delete mode 100644 tools/perf/arch/sh/entry/syscalls/Kbuild
delete mode 100644 tools/perf/arch/sh/entry/syscalls/Makefile.syscalls
delete mode 100644 tools/perf/arch/sparc/entry/syscalls/Kbuild
delete mode 100644 tools/perf/arch/sparc/entry/syscalls/Makefile.syscalls
delete mode 100644 tools/perf/arch/x86/entry/syscalls/Kbuild
delete mode 100644 tools/perf/arch/x86/entry/syscalls/Makefile.syscalls
delete mode 100644 tools/perf/arch/xtensa/entry/syscalls/Kbuild
delete mode 100644 tools/perf/arch/xtensa/entry/syscalls/Makefile.syscalls
delete mode 100644 tools/perf/scripts/Makefile.syscalls
delete mode 100755 tools/perf/scripts/syscalltbl.sh

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 793e702f9aaf..62176d685445 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -339,7 +339,6 @@ ifeq ($(filter feature-dump,$(MAKECMDGOALS)),feature-dump)
FEATURE_TESTS := all
endif
endif
-include $(srctree)/tools/perf/scripts/Makefile.syscalls
include Makefile.config
endif

diff --git a/tools/perf/arch/alpha/entry/syscalls/Kbuild b/tools/perf/arch/alpha/entry/syscalls/Kbuild
deleted file mode 100644
index 9a41e3572c3a..000000000000
--- a/tools/perf/arch/alpha/entry/syscalls/Kbuild
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-syscall-y += syscalls_64.h
diff --git a/tools/perf/arch/alpha/entry/syscalls/Makefile.syscalls b/tools/perf/arch/alpha/entry/syscalls/Makefile.syscalls
deleted file mode 100644
index 690168aac34d..000000000000
--- a/tools/perf/arch/alpha/entry/syscalls/Makefile.syscalls
+++ /dev/null
@@ -1,5 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-syscall_abis_64 +=
-
-syscalltbl = $(srctree)/tools/perf/arch/alpha/entry/syscalls/syscall.tbl
diff --git a/tools/perf/arch/arc/entry/syscalls/Kbuild b/tools/perf/arch/arc/entry/syscalls/Kbuild
deleted file mode 100644
index 11707c481a24..000000000000
--- a/tools/perf/arch/arc/entry/syscalls/Kbuild
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-syscall-y += syscalls_32.h
diff --git a/tools/perf/arch/arc/entry/syscalls/Makefile.syscalls b/tools/perf/arch/arc/entry/syscalls/Makefile.syscalls
deleted file mode 100644
index 391d30ab7a83..000000000000
--- a/tools/perf/arch/arc/entry/syscalls/Makefile.syscalls
+++ /dev/null
@@ -1,3 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-syscall_abis_32 += arc time32 renameat stat64 rlimit
diff --git a/tools/perf/arch/arm/entry/syscalls/Kbuild b/tools/perf/arch/arm/entry/syscalls/Kbuild
deleted file mode 100644
index 9d777540f089..000000000000
--- a/tools/perf/arch/arm/entry/syscalls/Kbuild
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-syscall_abis_32 += oabi
-syscalltbl = $(srctree)/tools/perf/arch/arm/entry/syscalls/syscall.tbl
diff --git a/tools/perf/arch/arm/entry/syscalls/Makefile.syscalls b/tools/perf/arch/arm/entry/syscalls/Makefile.syscalls
deleted file mode 100644
index 11707c481a24..000000000000
--- a/tools/perf/arch/arm/entry/syscalls/Makefile.syscalls
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-syscall-y += syscalls_32.h
diff --git a/tools/perf/arch/arm64/entry/syscalls/Kbuild b/tools/perf/arch/arm64/entry/syscalls/Kbuild
deleted file mode 100644
index 84c6599b4ea6..000000000000
--- a/tools/perf/arch/arm64/entry/syscalls/Kbuild
+++ /dev/null
@@ -1,3 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-syscall-y += syscalls_32.h
-syscall-y += syscalls_64.h
diff --git a/tools/perf/arch/arm64/entry/syscalls/Makefile.syscalls b/tools/perf/arch/arm64/entry/syscalls/Makefile.syscalls
deleted file mode 100644
index e7e78c2d1c02..000000000000
--- a/tools/perf/arch/arm64/entry/syscalls/Makefile.syscalls
+++ /dev/null
@@ -1,6 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-syscall_abis_32 +=
-syscall_abis_64 += renameat rlimit memfd_secret
-
-syscalltbl = $(srctree)/tools/perf/arch/arm64/entry/syscalls/syscall_%.tbl
diff --git a/tools/perf/arch/csky/entry/syscalls/Kbuild b/tools/perf/arch/csky/entry/syscalls/Kbuild
deleted file mode 100644
index 11707c481a24..000000000000
--- a/tools/perf/arch/csky/entry/syscalls/Kbuild
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-syscall-y += syscalls_32.h
diff --git a/tools/perf/arch/csky/entry/syscalls/Makefile.syscalls b/tools/perf/arch/csky/entry/syscalls/Makefile.syscalls
deleted file mode 100644
index ea2dd10d0571..000000000000
--- a/tools/perf/arch/csky/entry/syscalls/Makefile.syscalls
+++ /dev/null
@@ -1,3 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-syscall_abis_32 += csky time32 stat64 rlimit
diff --git a/tools/perf/arch/loongarch/entry/syscalls/Kbuild b/tools/perf/arch/loongarch/entry/syscalls/Kbuild
deleted file mode 100644
index 9a41e3572c3a..000000000000
--- a/tools/perf/arch/loongarch/entry/syscalls/Kbuild
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-syscall-y += syscalls_64.h
diff --git a/tools/perf/arch/loongarch/entry/syscalls/Makefile.syscalls b/tools/perf/arch/loongarch/entry/syscalls/Makefile.syscalls
deleted file mode 100644
index 47d32da2aed8..000000000000
--- a/tools/perf/arch/loongarch/entry/syscalls/Makefile.syscalls
+++ /dev/null
@@ -1,3 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-syscall_abis_64 +=
diff --git a/tools/perf/arch/mips/entry/syscalls/Kbuild b/tools/perf/arch/mips/entry/syscalls/Kbuild
deleted file mode 100644
index 9a41e3572c3a..000000000000
--- a/tools/perf/arch/mips/entry/syscalls/Kbuild
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-syscall-y += syscalls_64.h
diff --git a/tools/perf/arch/mips/entry/syscalls/Makefile.syscalls b/tools/perf/arch/mips/entry/syscalls/Makefile.syscalls
deleted file mode 100644
index 9ee914bdfb05..000000000000
--- a/tools/perf/arch/mips/entry/syscalls/Makefile.syscalls
+++ /dev/null
@@ -1,5 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-syscall_abis_64 += n64
-
-syscalltbl = $(srctree)/tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl
diff --git a/tools/perf/arch/parisc/entry/syscalls/Kbuild b/tools/perf/arch/parisc/entry/syscalls/Kbuild
deleted file mode 100644
index 84c6599b4ea6..000000000000
--- a/tools/perf/arch/parisc/entry/syscalls/Kbuild
+++ /dev/null
@@ -1,3 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-syscall-y += syscalls_32.h
-syscall-y += syscalls_64.h
diff --git a/tools/perf/arch/parisc/entry/syscalls/Makefile.syscalls b/tools/perf/arch/parisc/entry/syscalls/Makefile.syscalls
deleted file mode 100644
index ae326fecb83b..000000000000
--- a/tools/perf/arch/parisc/entry/syscalls/Makefile.syscalls
+++ /dev/null
@@ -1,6 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-syscall_abis_32 +=
-syscall_abis_64 +=
-
-syscalltbl = $(srctree)/tools/perf/arch/parisc/entry/syscalls/syscall.tbl
diff --git a/tools/perf/arch/powerpc/entry/syscalls/Kbuild b/tools/perf/arch/powerpc/entry/syscalls/Kbuild
deleted file mode 100644
index 84c6599b4ea6..000000000000
--- a/tools/perf/arch/powerpc/entry/syscalls/Kbuild
+++ /dev/null
@@ -1,3 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-syscall-y += syscalls_32.h
-syscall-y += syscalls_64.h
diff --git a/tools/perf/arch/powerpc/entry/syscalls/Makefile.syscalls b/tools/perf/arch/powerpc/entry/syscalls/Makefile.syscalls
deleted file mode 100644
index e35afbc57c79..000000000000
--- a/tools/perf/arch/powerpc/entry/syscalls/Makefile.syscalls
+++ /dev/null
@@ -1,6 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-syscall_abis_32 += nospu
-syscall_abis_64 += nospu
-
-syscalltbl = $(srctree)/tools/perf/arch/powerpc/entry/syscalls/syscall.tbl
diff --git a/tools/perf/arch/riscv/entry/syscalls/Kbuild b/tools/perf/arch/riscv/entry/syscalls/Kbuild
deleted file mode 100644
index 9a41e3572c3a..000000000000
--- a/tools/perf/arch/riscv/entry/syscalls/Kbuild
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-syscall-y += syscalls_64.h
diff --git a/tools/perf/arch/riscv/entry/syscalls/Makefile.syscalls b/tools/perf/arch/riscv/entry/syscalls/Makefile.syscalls
deleted file mode 100644
index 9668fd1faf60..000000000000
--- a/tools/perf/arch/riscv/entry/syscalls/Makefile.syscalls
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-syscall_abis_32 += riscv memfd_secret
-syscall_abis_64 += riscv rlimit memfd_secret
diff --git a/tools/perf/arch/s390/entry/syscalls/Kbuild b/tools/perf/arch/s390/entry/syscalls/Kbuild
deleted file mode 100644
index 9a41e3572c3a..000000000000
--- a/tools/perf/arch/s390/entry/syscalls/Kbuild
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-syscall-y += syscalls_64.h
diff --git a/tools/perf/arch/s390/entry/syscalls/Makefile.syscalls b/tools/perf/arch/s390/entry/syscalls/Makefile.syscalls
deleted file mode 100644
index 9762d7abf17c..000000000000
--- a/tools/perf/arch/s390/entry/syscalls/Makefile.syscalls
+++ /dev/null
@@ -1,5 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-syscall_abis_64 += renameat rlimit memfd_secret
-
-syscalltbl = $(srctree)/tools/perf/arch/s390/entry/syscalls/syscall.tbl
diff --git a/tools/perf/arch/sh/entry/syscalls/Kbuild b/tools/perf/arch/sh/entry/syscalls/Kbuild
deleted file mode 100644
index 11707c481a24..000000000000
--- a/tools/perf/arch/sh/entry/syscalls/Kbuild
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-syscall-y += syscalls_32.h
diff --git a/tools/perf/arch/sh/entry/syscalls/Makefile.syscalls b/tools/perf/arch/sh/entry/syscalls/Makefile.syscalls
deleted file mode 100644
index 25080390e4ed..000000000000
--- a/tools/perf/arch/sh/entry/syscalls/Makefile.syscalls
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-syscall_abis_32 +=
-syscalltbl = $(srctree)/tools/perf/arch/sh/entry/syscalls/syscall.tbl
diff --git a/tools/perf/arch/sparc/entry/syscalls/Kbuild b/tools/perf/arch/sparc/entry/syscalls/Kbuild
deleted file mode 100644
index 84c6599b4ea6..000000000000
--- a/tools/perf/arch/sparc/entry/syscalls/Kbuild
+++ /dev/null
@@ -1,3 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-syscall-y += syscalls_32.h
-syscall-y += syscalls_64.h
diff --git a/tools/perf/arch/sparc/entry/syscalls/Makefile.syscalls b/tools/perf/arch/sparc/entry/syscalls/Makefile.syscalls
deleted file mode 100644
index 212c1800b644..000000000000
--- a/tools/perf/arch/sparc/entry/syscalls/Makefile.syscalls
+++ /dev/null
@@ -1,5 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-syscall_abis_32 +=
-syscall_abis_64 +=
-syscalltbl = $(srctree)/tools/perf/arch/sparc/entry/syscalls/syscall.tbl
diff --git a/tools/perf/arch/x86/entry/syscalls/Kbuild b/tools/perf/arch/x86/entry/syscalls/Kbuild
deleted file mode 100644
index 84c6599b4ea6..000000000000
--- a/tools/perf/arch/x86/entry/syscalls/Kbuild
+++ /dev/null
@@ -1,3 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-syscall-y += syscalls_32.h
-syscall-y += syscalls_64.h
diff --git a/tools/perf/arch/x86/entry/syscalls/Makefile.syscalls b/tools/perf/arch/x86/entry/syscalls/Makefile.syscalls
deleted file mode 100644
index db3d5d6d4e56..000000000000
--- a/tools/perf/arch/x86/entry/syscalls/Makefile.syscalls
+++ /dev/null
@@ -1,6 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-syscall_abis_32 += i386
-syscall_abis_64 +=
-
-syscalltbl = $(srctree)/tools/perf/arch/x86/entry/syscalls/syscall_%.tbl
diff --git a/tools/perf/arch/xtensa/entry/syscalls/Kbuild b/tools/perf/arch/xtensa/entry/syscalls/Kbuild
deleted file mode 100644
index 11707c481a24..000000000000
--- a/tools/perf/arch/xtensa/entry/syscalls/Kbuild
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-syscall-y += syscalls_32.h
diff --git a/tools/perf/arch/xtensa/entry/syscalls/Makefile.syscalls b/tools/perf/arch/xtensa/entry/syscalls/Makefile.syscalls
deleted file mode 100644
index d4aa2358460c..000000000000
--- a/tools/perf/arch/xtensa/entry/syscalls/Makefile.syscalls
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-
-syscall_abis_32 +=
-syscalltbl = $(srctree)/tools/perf/arch/xtensa/entry/syscalls/syscall.tbl
diff --git a/tools/perf/scripts/Makefile.syscalls b/tools/perf/scripts/Makefile.syscalls
deleted file mode 100644
index 8bf55333262e..000000000000
--- a/tools/perf/scripts/Makefile.syscalls
+++ /dev/null
@@ -1,61 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-# This Makefile generates headers in
-# tools/perf/arch/$(SRCARCH)/include/generated/asm from the architecture's
-# syscall table. This will either be from the generic syscall table, or from a
-# table that is specific to that architecture.
-
-PHONY := all
-all:
-
-obj := $(OUTPUT)arch/$(SRCARCH)/include/generated/asm
-
-syscall_abis_32 := common,32
-syscall_abis_64 := common,64
-syscalltbl := $(srctree)/tools/scripts/syscall.tbl
-
-# let architectures override $(syscall_abis_%) and $(syscalltbl)
--include $(srctree)/tools/perf/arch/$(SRCARCH)/entry/syscalls/Makefile.syscalls
-include $(srctree)/tools/build/Build.include
--include $(srctree)/tools/perf/arch/$(SRCARCH)/entry/syscalls/Kbuild
-
-systbl := $(srctree)/tools/perf/scripts/syscalltbl.sh
-
-syscall-y := $(addprefix $(obj)/, $(syscall-y))
-
-# Remove stale wrappers when the corresponding files are removed from generic-y
-old-headers := $(wildcard $(obj)/*.h)
-unwanted := $(filter-out $(syscall-y),$(old-headers))
-
-quiet_cmd_remove = REMOVE $(unwanted)
- cmd_remove = rm -f $(unwanted)
-
-quiet_cmd_systbl = SYSTBL $@
- cmd_systbl = $(CONFIG_SHELL) $(systbl) \
- $(if $(systbl-args-$*),$(systbl-args-$*),$(systbl-args)) \
- --abis $(subst $(space),$(comma),$(strip $(syscall_abis_$*))) \
- $< $@
-
-all: $(syscall-y)
- $(if $(unwanted),$(call cmd,remove))
- @:
-
-$(obj)/syscalls_%.h: $(syscalltbl) $(systbl) FORCE
- $(call if_changed,systbl)
-
-targets := $(syscall-y)
-
-# Create output directory. Skip it if at least one old header exists
-# since we know the output directory already exists.
-ifeq ($(old-headers),)
-$(shell mkdir -p $(obj))
-endif
-
-PHONY += FORCE
-
-FORCE:
-
-existing-targets := $(wildcard $(sort $(targets)))
-
--include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
-
-.PHONY: $(PHONY)
diff --git a/tools/perf/scripts/syscalltbl.sh b/tools/perf/scripts/syscalltbl.sh
deleted file mode 100755
index a39b3013b103..000000000000
--- a/tools/perf/scripts/syscalltbl.sh
+++ /dev/null
@@ -1,76 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-#
-# Generate a syscall table header.
-#
-# Each line of the syscall table should have the following format:
-#
-# NR ABI NAME [NATIVE] [COMPAT]
-#
-# NR syscall number
-# ABI ABI name
-# NAME syscall name
-# NATIVE native entry point (optional)
-# COMPAT compat entry point (optional)
-
-set -e
-
-usage() {
- echo >&2 "usage: $0 [--abis ABIS] INFILE OUTFILE" >&2
- echo >&2
- echo >&2 " INFILE input syscall table"
- echo >&2 " OUTFILE output header file"
- echo >&2
- echo >&2 "options:"
- echo >&2 " --abis ABIS ABI(s) to handle (By default, all lines are handled)"
- exit 1
-}
-
-# default unless specified by options
-abis=
-
-while [ $# -gt 0 ]
-do
- case $1 in
- --abis)
- abis=$(echo "($2)" | tr ',' '|')
- shift 2;;
- -*)
- echo "$1: unknown option" >&2
- usage;;
- *)
- break;;
- esac
-done
-
-if [ $# -ne 2 ]; then
- usage
-fi
-
-infile="$1"
-outfile="$2"
-
-sorted_table=$(mktemp /tmp/syscalltbl.XXXXXX)
-grep -E "^[0-9]+[[:space:]]+$abis" "$infile" | sort -n > $sorted_table
-
-echo "static const char *const syscall_num_to_name[] = {" > $outfile
-# the params are: nr abi name entry compat
-# use _ for intentionally unused variables according to SC2034
-while read nr _ name _ _; do
- echo " [$nr] = \"$name\"," >> $outfile
-done < $sorted_table
-echo "};" >> $outfile
-
-echo "static const uint16_t syscall_sorted_names[] = {" >> $outfile
-
-# When sorting by name, add a suffix of 0s upto 20 characters so that system
-# calls that differ with a numerical suffix don't sort before those
-# without. This default behavior of sort differs from that of strcmp used at
-# runtime. Use sed to strip the trailing 0s suffix afterwards.
-grep -E "^[0-9]+[[:space:]]+$abis" "$infile" | awk '{printf $3; for (i = length($3); i < 20; i++) { printf "0"; }; print " " $1}'| sort | sed 's/\([a-zA-Z1-9]\+\)0\+ \([0-9]\+\)/\1 \2/' > $sorted_table
-while read name nr; do
- echo " $nr, /* $name */" >> $outfile
-done < $sorted_table
-echo "};" >> $outfile
-
-rm -f $sorted_table
--
2.48.1.502.g6dc24dfdaf-goog