#!/bin/shself=$0 usage() { cat <<EOF >&2Usage: $self [options] FILE Reads the Run Time CPU Detections definitions from FILE and generates aC header file on stdout. Options: --arch=ARCH Architecture to generate defs for (required) --disable-EXT Disable support for EXT extensions --require-EXT Require support for EXT extensions --sym=SYMBOL Unique symbol to use for RTCD initialization function --config=FILE File with CONFIG_FOO=yes lines to parseEOF exit 1} die() { echo "$@" >&2 exit 1} die_argument_required() { die "Option $opt requires argument"} for opt; do optval="${opt#*=}" case "$opt" in --arch) die_argument_required;; --arch=*) arch=${optval};; --disable-*) eval "disable_${opt#--disable-}=true";; --require-*) REQUIRES="${REQUIRES}${opt#--require-} ";; --sym) die_argument_required;; --sym=*) symbol=${optval};; --config=*) config_file=${optval};; -h|--help) usage ;; -*) die "Unrecognized option: ${opt%%=*}" ;; *) defs_file="$defs_file $opt" ;; esac shiftdonefor f in $defs_file; do [ -f "$f" ] || usage; done[ -n "$arch" ] || usage # Import the configuration[ -f "$config_file" ] && eval $(grep CONFIG_ "$config_file") ## Routines for the RTCD DSL to call#prototype() { rtyp="" case "$1" in unsigned) rtyp="$1 "; shift;; esac rtyp="${rtyp}$1" fn="$2" args="$3" eval "${2}_rtyp='$rtyp'" eval "${2}_args='$3'" ALL_FUNCS="$ALL_FUNCS $fn" specialize $fn c} specialize() { fn="$1" shift for opt in "$@"; do eval "${fn}_${opt}=${fn}_${opt}" done} require() { for fn in $ALL_FUNCS; do for opt in "$@"; do ofn=$(eval "echo \$${fn}_${opt}") [ -z "$ofn" ] && continue # if we already have a default, then we can disable it, as we know # we can do better. best=$(eval "echo \$${fn}_default") best_ofn=$(eval "echo \$${best}") [ -n "$best" ] && [ "$best_ofn" != "$ofn" ] && eval "${best}_link=false" eval "${fn}_default=${fn}_${opt}" eval "${fn}_${opt}_link=true" done done} forward_decls() { ALL_FORWARD_DECLS="$ALL_FORWARD_DECLS $1"} ## Include the user's directives#for f in $defs_file; do . $fdone ## Process the directives according to the command line#process_forward_decls() { for fn in $ALL_FORWARD_DECLS; do eval $fn done} determine_indirection() { [ "$CONFIG_RUNTIME_CPU_DETECT" = "yes" ] || require $ALL_ARCHS for fn in $ALL_FUNCS; do n="" rtyp="$(eval "echo \$${fn}_rtyp")" args="$(eval "echo \"\$${fn}_args\"")" dfn="$(eval "echo \$${fn}_default")" dfn=$(eval "echo \$${dfn}") for opt in "$@"; do ofn=$(eval "echo \$${fn}_${opt}") [ -z "$ofn" ] && continue link=$(eval "echo \$${fn}_${opt}_link") [ "$link" = "false" ] && continue n="${n}x" done if [ "$n" = "x" ]; then eval "${fn}_indirect=false" else eval "${fn}_indirect=true" fi done} declare_function_pointers() { for fn in $ALL_FUNCS; do rtyp="$(eval "echo \$${fn}_rtyp")" args="$(eval "echo \"\$${fn}_args\"")" dfn="$(eval "echo \$${fn}_default")" dfn=$(eval "echo \$${dfn}") for opt in "$@"; do ofn=$(eval "echo \$${fn}_${opt}") [ -z "$ofn" ] && continue echo "$rtyp ${ofn}($args);" done if [ "$(eval "echo \$${fn}_indirect")" = "false" ]; then echo "#define ${fn} ${dfn}" else echo "RTCD_EXTERN $rtyp (*${fn})($args);" fi echo done} set_function_pointers() { for fn in $ALL_FUNCS; do n="" rtyp="$(eval "echo \$${fn}_rtyp")" args="$(eval "echo \"\$${fn}_args\"")" dfn="$(eval "echo \$${fn}_default")" dfn=$(eval "echo \$${dfn}") if $(eval "echo \$${fn}_indirect"); then echo " $fn = $dfn;" for opt in "$@"; do ofn=$(eval "echo \$${fn}_${opt}") [ -z "$ofn" ] && continue [ "$ofn" = "$dfn" ] && continue; link=$(eval "echo \$${fn}_${opt}_link") [ "$link" = "false" ] && continue cond="$(eval "echo \$have_${opt}")" echo " if (${cond}) $fn = $ofn;" done fi echo done} filter() { filtered="" for opt in "$@"; do [ -z $(eval "echo \$disable_${opt}") ] && filtered="$filtered $opt" done echo $filtered} ## Helper functions for generating the arch specific RTCD files#common_top() { outfile_basename=$(basename ${symbol:-rtcd}) include_guard=$(echo $outfile_basename | tr '[a-z]' '[A-Z]' | \ tr -c '[A-Z0-9]' _)H_ cat <<EOF#ifndef ${include_guard}#define ${include_guard} #ifdef RTCD_C#define RTCD_EXTERN#else#define RTCD_EXTERN extern#endif $(process_forward_decls) $(declare_function_pointers c $ALL_ARCHS) void ${symbol:-rtcd}(void);EOF} common_bottom() { cat <<EOF#endifEOF} x86() { determine_indirection c $ALL_ARCHS # Assign the helper variable for each enabled extension for opt in $ALL_ARCHS; do uc=$(echo $opt | tr '[a-z]' '[A-Z]') eval "have_${opt}=\"flags & HAS_${uc}\"" done cat <<EOF$(common_top) #ifdef RTCD_C#include "vpx_ports/x86.h"static void setup_rtcd_internal(void){ int flags = x86_simd_caps(); (void)flags; $(set_function_pointers c $ALL_ARCHS)}#endif$(common_bottom)EOF} arm() { determine_indirection c $ALL_ARCHS # Assign the helper variable for each enabled extension for opt in $ALL_ARCHS; do uc=$(echo $opt | tr '[a-z]' '[A-Z]') eval "have_${opt}=\"flags & HAS_${uc}\"" done cat <<EOF$(common_top)#include "vpx_config.h" #ifdef RTCD_C#include "vpx_ports/arm.h"static void setup_rtcd_internal(void){ int flags = arm_cpu_caps(); (void)flags; $(set_function_pointers c $ALL_ARCHS)}#endif$(common_bottom)EOF} mips() { determine_indirection c $ALL_ARCHS cat <<EOF$(common_top)#include "vpx_config.h" #ifdef RTCD_Cstatic void setup_rtcd_internal(void){$(set_function_pointers c $ALL_ARCHS)#if HAVE_DSPR2#if CONFIG_VP8void dsputil_static_init();dsputil_static_init();#endif#if CONFIG_VP9void vp9_dsputil_static_init();vp9_dsputil_static_init();#endif#endif}#endif$(common_bottom)EOF} unoptimized() { determine_indirection c cat <<EOF$(common_top)#include "vpx_config.h" #ifdef RTCD_Cstatic void setup_rtcd_internal(void){$(set_function_pointers c)}#endif$(common_bottom)EOF }## Main Driver#require ccase $arch in x86) ALL_ARCHS=$(filter mmx sse sse2 sse3 ssse3 sse4_1 avx avx2) x86 ;; x86_64) ALL_ARCHS=$(filter mmx sse sse2 sse3 ssse3 sse4_1 avx avx2) REQUIRES=${REQUIRES:-mmx sse sse2} require $(filter $REQUIRES) x86 ;; mips32) ALL_ARCHS=$(filter mips32) dspr2=$([ -f "$config_file" ] && eval echo $(grep HAVE_DSPR2 "$config_file")) HAVE_DSPR2="${dspr2#*=}" if [ "$HAVE_DSPR2" = "yes" ]; then ALL_ARCHS=$(filter mips32 dspr2) fi mips ;; armv5te) ALL_ARCHS=$(filter edsp) arm ;; armv6) ALL_ARCHS=$(filter edsp media) arm ;; armv7) ALL_ARCHS=$(filter edsp media neon) arm ;; *) unoptimized ;;esac
#!/bin/sh
self=$0
usage() {
cat <<EOF >&2
Usage: $self [options] FILE
Reads the Run Time CPU Detections definitions from FILE and generates a
C header file on stdout.
Options:
--arch=ARCH Architecture to generate defs for (required)
--disable-EXT Disable support for EXT extensions
--require-EXT Require support for EXT extensions
--sym=SYMBOL Unique symbol to use for RTCD initialization function
--config=FILE File with CONFIG_FOO=yes lines to parse
EOF
exit 1
}
die() {
echo "$@" >&2
exit 1
}
die_argument_required() {
die "Option $opt requires argument"
}
for opt; do
optval="${opt#*=}"
case "$opt" in
--arch) die_argument_required;;
--arch=*) arch=${optval};;
--disable-*) eval "disable_${opt#--disable-}=true";;
--require-*) REQUIRES="${REQUIRES}${opt#--require-} ";;
--sym) die_argument_required;;
--sym=*) symbol=${optval};;
--config=*) config_file=${optval};;
-h|--help)
usage
;;
-*)
die "Unrecognized option: ${opt%%=*}"
;;
*)
defs_file="$defs_file $opt"
;;
esac
shift
done
for f in $defs_file; do [ -f "$f" ] || usage; done
[ -n "$arch" ] || usage
# Import the configuration
[ -f "$config_file" ] && eval $(grep CONFIG_ "$config_file")
#
# Routines for the RTCD DSL to call
#
prototype() {
rtyp=""
case "$1" in
unsigned) rtyp="$1 "; shift;;
esac
rtyp="${rtyp}$1"
fn="$2"
args="$3"
eval "${2}_rtyp='$rtyp'"
eval "${2}_args='$3'"
ALL_FUNCS="$ALL_FUNCS $fn"
specialize $fn c
}
specialize() {
fn="$1"
shift
for opt in "$@"; do
eval "${fn}_${opt}=${fn}_${opt}"
done
}
require() {
for fn in $ALL_FUNCS; do
for opt in "$@"; do
ofn=$(eval "echo \$${fn}_${opt}")
[ -z "$ofn" ] && continue
# if we already have a default, then we can disable it, as we know
# we can do better.
best=$(eval "echo \$${fn}_default")
best_ofn=$(eval "echo \$${best}")
[ -n "$best" ] && [ "$best_ofn" != "$ofn" ] && eval "${best}_link=false"
eval "${fn}_default=${fn}_${opt}"
eval "${fn}_${opt}_link=true"
done
done
}
forward_decls() {
ALL_FORWARD_DECLS="$ALL_FORWARD_DECLS $1"
}
#
# Include the user's directives
#
for f in $defs_file; do
. $f
done
#
# Process the directives according to the command line
#
process_forward_decls() {
for fn in $ALL_FORWARD_DECLS; do
eval $fn
done
}
determine_indirection() {
[ "$CONFIG_RUNTIME_CPU_DETECT" = "yes" ] || require $ALL_ARCHS
for fn in $ALL_FUNCS; do
n=""
rtyp="$(eval "echo \$${fn}_rtyp")"
args="$(eval "echo \"\$${fn}_args\"")"
dfn="$(eval "echo \$${fn}_default")"
dfn=$(eval "echo \$${dfn}")
for opt in "$@"; do
ofn=$(eval "echo \$${fn}_${opt}")
[ -z "$ofn" ] && continue
link=$(eval "echo \$${fn}_${opt}_link")
[ "$link" = "false" ] && continue
n="${n}x"
done
if [ "$n" = "x" ]; then
eval "${fn}_indirect=false"
else
eval "${fn}_indirect=true"
fi
done
}
declare_function_pointers() {
for fn in $ALL_FUNCS; do
rtyp="$(eval "echo \$${fn}_rtyp")"
args="$(eval "echo \"\$${fn}_args\"")"
dfn="$(eval "echo \$${fn}_default")"
dfn=$(eval "echo \$${dfn}")
for opt in "$@"; do
ofn=$(eval "echo \$${fn}_${opt}")
[ -z "$ofn" ] && continue
echo "$rtyp ${ofn}($args);"
done
if [ "$(eval "echo \$${fn}_indirect")" = "false" ]; then
echo "#define ${fn} ${dfn}"
else
echo "RTCD_EXTERN $rtyp (*${fn})($args);"
fi
echo
done
}
set_function_pointers() {
for fn in $ALL_FUNCS; do
n=""
rtyp="$(eval "echo \$${fn}_rtyp")"
args="$(eval "echo \"\$${fn}_args\"")"
dfn="$(eval "echo \$${fn}_default")"
dfn=$(eval "echo \$${dfn}")
if $(eval "echo \$${fn}_indirect"); then
echo " $fn = $dfn;"
for opt in "$@"; do
ofn=$(eval "echo \$${fn}_${opt}")
[ -z "$ofn" ] && continue
[ "$ofn" = "$dfn" ] && continue;
link=$(eval "echo \$${fn}_${opt}_link")
[ "$link" = "false" ] && continue
cond="$(eval "echo \$have_${opt}")"
echo " if (${cond}) $fn = $ofn;"
done
fi
echo
done
}
filter() {
filtered=""
for opt in "$@"; do
[ -z $(eval "echo \$disable_${opt}") ] && filtered="$filtered $opt"
done
echo $filtered
}
#
# Helper functions for generating the arch specific RTCD files
#
common_top() {
outfile_basename=$(basename ${symbol:-rtcd})
include_guard=$(echo $outfile_basename | tr '[a-z]' '[A-Z]' | \
tr -c '[A-Z0-9]' _)H_
cat <<EOF
#ifndef ${include_guard}
#define ${include_guard}
#ifdef RTCD_C
#define RTCD_EXTERN
#else
#define RTCD_EXTERN extern
#endif
$(process_forward_decls)
$(declare_function_pointers c $ALL_ARCHS)
void ${symbol:-rtcd}(void);
EOF
}
common_bottom() {
cat <<EOF
#endif
EOF
}
x86() {
determine_indirection c $ALL_ARCHS
# Assign the helper variable for each enabled extension
for opt in $ALL_ARCHS; do
uc=$(echo $opt | tr '[a-z]' '[A-Z]')
eval "have_${opt}=\"flags & HAS_${uc}\""
done
cat <<EOF
$(common_top)
#ifdef RTCD_C
#include "vpx_ports/x86.h"
static void setup_rtcd_internal(void)
{
int flags = x86_simd_caps();
(void)flags;
$(set_function_pointers c $ALL_ARCHS)
}
#endif
$(common_bottom)
EOF
}
arm() {
determine_indirection c $ALL_ARCHS
# Assign the helper variable for each enabled extension
for opt in $ALL_ARCHS; do
uc=$(echo $opt | tr '[a-z]' '[A-Z]')
eval "have_${opt}=\"flags & HAS_${uc}\""
done
cat <<EOF
$(common_top)
#include "vpx_config.h"
#ifdef RTCD_C
#include "vpx_ports/arm.h"
static void setup_rtcd_internal(void)
{
int flags = arm_cpu_caps();
(void)flags;
$(set_function_pointers c $ALL_ARCHS)
}
#endif
$(common_bottom)
EOF
}
mips() {
determine_indirection c $ALL_ARCHS
cat <<EOF
$(common_top)
#include "vpx_config.h"
#ifdef RTCD_C
static void setup_rtcd_internal(void)
{
$(set_function_pointers c $ALL_ARCHS)
#if HAVE_DSPR2
#if CONFIG_VP8
void dsputil_static_init();
dsputil_static_init();
#endif
#if CONFIG_VP9
void vp9_dsputil_static_init();
vp9_dsputil_static_init();
#endif
#endif
}
#endif
$(common_bottom)
EOF
}
unoptimized() {
determine_indirection c
cat <<EOF
$(common_top)
#include "vpx_config.h"
#ifdef RTCD_C
static void setup_rtcd_internal(void)
{
$(set_function_pointers c)
}
#endif
$(common_bottom)
EOF
}
#
# Main Driver
#
require c
case $arch in
x86)
ALL_ARCHS=$(filter mmx sse sse2 sse3 ssse3 sse4_1 avx avx2)
x86
;;
x86_64)
ALL_ARCHS=$(filter mmx sse sse2 sse3 ssse3 sse4_1 avx avx2)
REQUIRES=${REQUIRES:-mmx sse sse2}
require $(filter $REQUIRES)
x86
;;
mips32)
ALL_ARCHS=$(filter mips32)
dspr2=$([ -f "$config_file" ] && eval echo $(grep HAVE_DSPR2 "$config_file"))
HAVE_DSPR2="${dspr2#*=}"
if [ "$HAVE_DSPR2" = "yes" ]; then
ALL_ARCHS=$(filter mips32 dspr2)
fi
mips
;;
armv5te)
ALL_ARCHS=$(filter edsp)
arm
;;
armv6)
ALL_ARCHS=$(filter edsp media)
arm
;;
armv7)
ALL_ARCHS=$(filter edsp media neon)
arm
;;
*)
unoptimized
;;
esac