From c131f122778c62f920a99bbf854ced4a37ee8b03 Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@kth.se>
Date: Sun, 3 Dec 2023 19:23:35 +0100
Subject: First commit
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

Signed-off-by: Mattias Andrée <maandree@kth.se>
---
 linux/errors.mk | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 linux/errors.mk

(limited to 'linux/errors.mk')

diff --git a/linux/errors.mk b/linux/errors.mk
new file mode 100644
index 0000000..b6b7197
--- /dev/null
+++ b/linux/errors.mk
@@ -0,0 +1,52 @@
+libsyscalls_get_syscall_errors.o: generated/linux-errors.h linux/errors.c
+libsyscalls_get_syscall_errors.lo: generated/linux-errors.h linux/errors.c
+
+generated/linux-errors.tbl: $(LINUX_SOURCE) linux/errors.mk
+	mkdir -p -- generated
+	set -e; ( \
+	get_gcc_or_clang () { \
+		( \
+			( \
+				IFS=:; \
+				for dir in $$PATH; do \
+					if test ! -d "$$dir"; then continue; fi; \
+					for file in "$$dir"/*; do \
+						if test ! -x "$$file"; then continue; fi; \
+						printf '%s\n' "$$file"; \
+					done \
+				done \
+			) | grep '/\(gcc\|clang\)\(-[0-9.]\+\)\?$$'; \
+			printf '%s\n' gcc; \
+		) | sed 1q; \
+	}; \
+	extract="$$(get_gcc_or_clang) -E -dM"; \
+	toolsdir="linux-src/linux-$(LINUX_VERSION)/tools"; \
+	process_arch() \
+	{ \
+		($$extract "-I$$toolsdir/include/uapi" "$$2" && \
+		 cat -- "linux-src/linux-$(LINUX_VERSION)/include/linux/errno.h") \
+		| sed -n 's/^\s*\x23\s*define\s\+\(E[^\s]\+\)\s\+\([0-9]\+\)\s*\(\/.*\)\?$$/'"$$1"' \2 \1/p' \
+		| sort -k 2 -nu; \
+	}; \
+	for arch in $$(printf '%s\n' "$$toolsdir/arch"/*/ | sed 's:^.*/\([^/]*\)/$$:\1:'); do \
+		if test -f "$$toolsdir/arch/$$arch/include/uapi/asm/errno.h"; then \
+			process_arch "$$arch" "$$toolsdir/arch/$$arch/include/uapi/asm/errno.h"; \
+		fi; \
+	done; \
+	process_arch generic "$$toolsdir/include/uapi/asm-generic/errno.h"; \
+	) > $@
+
+generated/linux-errors.h: generated/linux-errors.tbl linux/errors.mk
+	set -e; \
+	for arch in $$(cut -d ' ' -f 1 < generated/linux-errors.tbl | uniq); do \
+		ARCH="$$(printf '%s\n' "$$arch" | tr '[a-z]' '[A-Z]')"; \
+		printf '#define LIST_LINUX_ERRORS_FOR_%s(X, D)\\\n' "$$ARCH"; \
+		sed -n 's/^'"$$arch"' \([0-9]\+\) \(.*\)$$/\tX(\1, "\2") D\\/p' \
+		< generated/linux-errors.tbl \
+		| sed '$$s/ D\\//'; \
+		printf 'static struct libsyscalls_named_number linux_errors_for_%s[] = {\n' "$$arch"; \
+		printf '#define X(NR, NAME) {.number.s = NR, .name = NAME}\n'; \
+		printf '\tLIST_LINUX_ERRORS_FOR_%s(X, COMMA)\n' "$$ARCH"; \
+		printf '#undef X\n'; \
+		printf '};\n'; \
+	done > $@
-- 
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