linux-qubasis

commit 6c931c06fd2e034878a1db5ffb922ef837aea84d
parent c2ad2a0df87d417cef6226f426dee1ddb8904edf
Author: Jul <jul@9o.is>
Date:   Thu,  4 Sep 2025 22:05:38 +0800

add linux-headers

Diffstat:
M
ninja/functions.sh
 | 
22
+++++++++++++++++++---
M
ninja/rules.ninja
 | 
4
++++
M
pkg/linux-headers/gen.sh
 | 
63
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
A
pkg/linux-headers/header.sed
 | 
7
+++++++
A
pkg/linux-headers/unistd.awk
 | 
18
++++++++++++++++++
A
pkg/linux-headers/version.awk
 | 
8
++++++++

6 files changed, 119 insertions(+), 3 deletions(-)
diff --git a/ninja/functions.sh b/ninja/functions.sh
@@ -171,6 +171,12 @@ gen() {
     fi
 }
 
+headers_exist() {
+    if _ninja_has $1 $_ninja_buffer_headers; then
+        return 0
+    fi
+    return 1
+}
 
 ##
 ## Internal ninja functions and variables
@@ -204,6 +210,9 @@ _ninja_initglobals() {
     _ninja_dir="$_ninja_basedir"/$1
     _ninja_ninjadir="$_ninja_basedir"/$BUILDDIR/ninja
 
+    DIR="$_ninja_dir"
+    SRCDIR="$_ninja_dir/repo"
+
     case $1 in
         .)
             _ninja_type=root
@@ -593,9 +602,16 @@ _ninja_flush_headers() {
     _srcs=
 
     for _src in $_ninja_buffer_headers; do
-        _out=$outdir/include/${_src##*/}
-        _srcs="$_srcs $_out"
-        build copy $_out $_src
+        case $_src in
+            \$srcdir/*)
+                _out=$outdir/include/${_src##*/}
+                _srcs="$_srcs $_out"
+                build copy $_out $_src
+                ;;
+            *)
+                _srcs="$_srcs $_src"
+                ;;
+        esac
     done
 
     build phony $tgtdir/headers $_srcs
diff --git a/ninja/rules.ninja b/ninja/rules.ninja
@@ -92,3 +92,7 @@ rule extract-deflate
 rule patch
   command = git -C $srcdir am --3way --keep-non-patch --no-gpg-sign --whitespace=nowarn $PWD/$in && touch $out
   description = PATCH $in
+
+rule sed
+  command = sed $expr $in >$out
+  description = SED $out
diff --git a/pkg/linux-headers/gen.sh b/pkg/linux-headers/gen.sh
@@ -6,3 +6,66 @@ fetch curl \
     'linux-*/arch/*/entry/syscalls/' \
     'linux-*/include/uapi/' \
     'linux-*/scripts/unifdef.c'
+
+case $TARGET_ARCH in
+    x86_64) linux_headers_arch=x86;;
+    *) error "Unsupported arch $TARGET_ARCH";;
+esac
+
+rule header 'sed -E -f $dir/header.sed $in >$out.tmp && { $hostdir/unifdef -U__KERNEL__ -D__EXPORTED_HEADERS__ $out.tmp >$out; [ $$? -le 1 ]; } && rm $out.tmp'
+bind description 'LINUX HEADER $out'
+rule wrapper 'printf "#include <asm-generic/%s>\n" $file >$out'
+bind description 'LINUX HEADER $out'
+
+host() {
+    exe unifdef scripts/unifdef.c
+}
+
+add_header() {
+    sync $1
+    headers $2
+}
+
+uapi_headers() {
+    srcs="$(find $SRCDIR/$1/* -name '*.h' | sed "s|^$SRCDIR|$srcdir|" | LC_COLLATE=C sort)"
+    for src in $srcs; do
+        outfile=$outdir/include/${src#*/uapi/}
+        build header $outfile $src '|' $dir/header.sed $hostdir/unifdef
+        add_header $src $outfile
+    done
+}
+
+wrap_mandatory() {
+    for src in $*; do
+        outfile=$outdir/include/asm/$src
+        if ! headers_exist $outfile; then
+            build wrapper $outfile
+            bind file $src
+            headers $outfile
+        fi
+    done
+}
+
+unistd_header() {
+    out=$outdir/include/asm/$1
+    src=$srcdir/$2
+    build awk $out $src '|' $dir/unistd.awk
+    bind expr "-f $dir/unistd.awk -v arch=x86 -v file='$1' -v spec='${4-}' -v abi='$3'"
+    headers $out
+}
+
+uapi_headers include/uapi
+uapi_headers arch/$linux_headers_arch/include/uapi
+
+build awk $outdir/include/linux/version.h $srcdir/Makefile '|' $dir/version.awk
+bind expr '-f $dir/version.awk'
+add_header $srcdir/Makefile $outdir/include/linux/version.h
+
+wrap_mandatory "$(cat $SRCDIR/include/uapi/asm-generic/Kbuild | grep -E '^mandatory-y' | sed 's|^mandatory-y += ||')"
+
+if [ $linux_headers_arch = x86 ]; then
+    unistd_header unistd_32.h arch/x86/entry/syscalls/syscall_32.tbl i386
+    unistd_header unistd_x32.h arch/x86/entry/syscalls/syscall_64.tbl 'common|x32' __X32_SYSCALL_BIT
+    unistd_header unistd_64.h arch/x86/entry/syscalls/syscall_64.tbl 'common|64'
+fi
+
diff --git a/pkg/linux-headers/header.sed b/pkg/linux-headers/header.sed
@@ -0,0 +1,7 @@
+# scripts/headers_install.sh
+s/([[:space:](])(__user|__force|__iomem)[[:space:]]/\1/g
+s/__attribute_const__([[:space:]]|$)/\1/g
+s@^#include <linux/compiler(_types)?.h>@@
+s/(^|[^a-zA-Z0-9])__packed([^a-zA-Z0-9_]|$)/\1__attribute__((packed))\2/g
+s/(^|[[:space:](])(inline|asm|volatile)([[:space:](]|$)/\1__\2__\3/g
+s@#(ifndef|define|endif[[:space:]]*/[*])[[:space:]]*_UAPI@#\1 @
diff --git a/pkg/linux-headers/unistd.awk b/pkg/linux-headers/unistd.awk
@@ -0,0 +1,18 @@
+BEGIN {
+	guard = toupper("_ASM_" arch "_" file)
+	gsub(/[^A-Za-z0-9_]/, "_", guard)
+	print "#ifndef " guard
+	print "#define " guard " 1"
+	print ""
+}
+
+$0 ~ /^[^#]+/ && $2 ~ "^(" abi ")$" {
+	if (off != "")
+		$1 = "(" off " + " $1 ")"
+	print "#define __NR_" $3, $1
+}
+
+END {
+	print ""
+	print "#endif /* " guard " */"
+}
diff --git a/pkg/linux-headers/version.awk b/pkg/linux-headers/version.awk
@@ -0,0 +1,8 @@
+/^VERSION = /    { version = $3 }
+/^PATCHLEVEL = / { patchlevel = $3 }
+/^SUBLEVEL = /   { sublevel = $3 }
+
+END {
+	print "#define LINUX_VERSION_CODE " (version * 65536 + patchlevel * 256 + sublevel)
+	print "#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))"
+}