From 73fab4ede12d8ae31be72b5cb4ab29d7ef7dae17 Mon Sep 17 00:00:00 2001
From: Richard Purdie <richard.purdie@linuxfoundation.org>
Date: Wed, 22 Aug 2018 14:49:52 +0000
Subject: linuxloader: Convert to python function

We could do with one decent general purpose python function to query the
path to the dynamic loader. Convert the shell code into python.

Also correct baremetal to return "None", not musl loaders.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
 meta/classes/linuxloader.bbclass | 112 ++++++++++++++++-----------------------
 1 file changed, 45 insertions(+), 67 deletions(-)

(limited to 'meta/classes/linuxloader.bbclass')

diff --git a/meta/classes/linuxloader.bbclass b/meta/classes/linuxloader.bbclass
index 8f30eb32e7..e1364a4e55 100644
--- a/meta/classes/linuxloader.bbclass
+++ b/meta/classes/linuxloader.bbclass
@@ -1,70 +1,48 @@
-LDSO_TCLIBC = "glibc"
-LDSO_TCLIBC_libc-musl = "musl"
-LDSO_TCLIBC_libc-baremetal = "musl"
+def get_linuxloader(d):
+    import re
 
-linuxloader_glibc () {
-	case ${TARGET_ARCH} in
-		powerpc | microblaze )
-			dynamic_loader="${base_libdir}/ld.so.1"
-			;;
-		mipsisa32r6el | mipsisa32r6 | mipsisa64r6el | mipsisa64r6)
-			dynamic_loader="${base_libdir}/ld-linux-mipsn8.so.1"
-			;;
-		mips* )
-			dynamic_loader="${base_libdir}/ld.so.1"
-			;;
-		powerpc64)
-			dynamic_loader="${base_libdir}/ld64.so.1"
-			;;
-		x86_64)
-			dynamic_loader="${base_libdir}/ld-linux-x86-64.so.2"
-			;;
-		i*86 )
-			dynamic_loader="${base_libdir}/ld-linux.so.2"
-			;;
-		arm )
-			dynamic_loader="${base_libdir}/ld-linux.so.3"
-			;;
-		* )
-			dynamic_loader="/unknown_dynamic_linker"
-			;;
-	esac
-	echo $dynamic_loader
-}
+    targetarch = d.getVar("TARGET_ARCH")
+    overrides = d.getVar("OVERRIDES").split(":")
 
-linuxloader_musl () {
-	case ${TARGET_ARCH} in
-		microblaze* )
-			dynamic_loader="${base_libdir}/ld-musl-microblaze${@bb.utils.contains('TUNE_FEATURES', 'bigendian', '', 'el' ,d)}.so.1"
-			;;
-		mips* )
-			dynamic_loader="${base_libdir}/ld-musl-mips${ABIEXTENSION}${MIPSPKGSFX_BYTE}${MIPSPKGSFX_R6}${MIPSPKGSFX_ENDIAN}${@['', '-sf'][d.getVar('TARGET_FPU') == 'soft']}.so.1"
-			;;
-		powerpc )
-			dynamic_loader="${base_libdir}/ld-musl-powerpc${@['', '-sf'][d.getVar('TARGET_FPU') == 'soft']}.so.1"
-			;;
-		powerpc64 )
-			dynamic_loader="${base_libdir}/ld-musl-powerpc64.so.1"
-			;;
-		x86_64 )
-			dynamic_loader="${base_libdir}/ld-musl-x86_64.so.1"
-			;;
-		i*86 )
-			dynamic_loader="${base_libdir}/ld-musl-i386.so.1"
-			;;
-		arm* )
-			dynamic_loader="${base_libdir}/ld-musl-arm${ARMPKGSFX_ENDIAN}${ARMPKGSFX_EABI}.so.1"
-			;;
-		aarch64* )
-			dynamic_loader="${base_libdir}/ld-musl-aarch64${ARMPKGSFX_ENDIAN_64}.so.1"
-			;;
-		* )
-			dynamic_loader="/unknown_dynamic_linker"
-			;;
-	esac
-	echo $dynamic_loader
-}
+    # No loader for baremetal
+    if "libc-baremetal" in overrides:
+        return None
+
+    dynamic_loader = None
+    if "libc-musl" in overrides:
+        if targetarch.startswith("microblaze"):
+            dynamic_loader = "${base_libdir}/ld-musl-microblaze${@bb.utils.contains('TUNE_FEATURES', 'bigendian', '', 'el' ,d)}.so.1"
+        elif targetarch.startswith("mips"):
+            dynamic_loader = "${base_libdir}/ld-musl-mips${ABIEXTENSION}${MIPSPKGSFX_BYTE}${MIPSPKGSFX_R6}${MIPSPKGSFX_ENDIAN}${@['', '-sf'][d.getVar('TARGET_FPU') == 'soft']}.so.1"
+        elif targetarch == "powerpc":
+            dynamic_loader = "${base_libdir}/ld-musl-powerpc${@['', '-sf'][d.getVar('TARGET_FPU') == 'soft']}.so.1"
+        elif targetarch == "powerpc64":
+            dynamic_loader = "${base_libdir}/ld-musl-powerpc64.so.1"
+        elif targetarch == "x86_64":
+            dynamic_loader = "${base_libdir}/ld-musl-x86_64.so.1"
+        elif re.search("i.86", targetarch):
+            dynamic_loader = "${base_libdir}/ld-musl-i386.so.1"
+        elif targetarch.startswith("arm"):
+            dynamic_loader = "${base_libdir}/ld-musl-arm${ARMPKGSFX_ENDIAN}${ARMPKGSFX_EABI}.so.1"
+        elif targetarch.startswith("aarch64"):
+            dynamic_loader = "${base_libdir}/ld-musl-aarch64${ARMPKGSFX_ENDIAN_64}.so.1"
+    else:
+        # glibc
+        if targetarch in ["powerpc", "microblaze"]:
+            dynamic_loader = "${base_libdir}/ld.so.1"
+        elif targetarch in ["mipsisa32r6el", "mipsisa32r6", "mipsisa64r6el", "mipsisa64r6"]:
+            dynamic_loader = "${base_libdir}/ld-linux-mipsn8.so.1"
+        elif targetarch.startswith("mips"):
+            dynamic_loader = "${base_libdir}/ld.so.1"
+        elif targetarch == "powerpc64":
+            dynamic_loader = "${base_libdir}/ld64.so.1"
+        elif targetarch == "x86_64":
+            dynamic_loader = "${base_libdir}/ld-linux-x86-64.so.2"
+        elif re.search("i.86", targetarch):
+            dynamic_loader = "${base_libdir}/ld-linux.so.2"
+        elif targetarch == "arm":
+            dynamic_loader = "${base_libdir}/ld-linux.so.3"
+
+    return dynamic_loader
+get_linuxloader[vardepvalue] = "${@get_linuxloader(d)}"
 
-linuxloader () {
-	linuxloader_${LDSO_TCLIBC}
-}
-- 
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