Augment stdarch-test to parse PPC

- Remove some unused env variables from `run.sh`

library/stdarch/ci/run-docker.sh

@@ -23,12 +23,10 @@ run() {
       --env CARGO_TARGET_DIR=/checkout/target \
       --env TARGET="${1}" \
       --env STDARCH_TEST_EVERYTHING \
-      --env STDARCH_ASSERT_INSTR_IGNORE \
       --env STDARCH_DISABLE_ASSERT_INSTR \
       --env NOSTD \
       --env NORUN \
       --env RUSTFLAGS \
-      --env STDARCH_TEST_NORUN \
       --volume "${HOME}/.cargo":/cargo \
       --volume "$(rustc --print sysroot)":/rust:ro \
       --volume "$(pwd)":/checkout:ro \

library/stdarch/crates/stdarch-test/src/disassembly.rs

@@ -29,7 +29,7 @@ fn normalize(mut symbol: &str) -> String {
 
     // Normalize to no leading underscore to handle platforms that may
     // inject extra ones in symbol names.
-    while symbol.starts_with('_') {
+    while symbol.starts_with('_') || symbol.starts_with('.') {
         symbol.remove(0);
     }
     // Windows/x86 has a suffix such as @@4.

library/stdarch/crates/stdarch-test/src/lib.rs

@@ -104,7 +104,12 @@ pub fn assert(shim_addr: usize, fnname: &str, expected: &str) {
             // failed inlining something.
             s[0].starts_with("call ") && s[1].starts_with("pop") // FIXME: original logic but does not match comment
         })
-    } else if cfg!(any(target_arch = "aarch64", target_arch = "arm64ec")) {
+    } else if cfg!(any(
+        target_arch = "aarch64",
+        target_arch = "arm64ec",
+        target_arch = "powerpc",
+        target_arch = "powerpc64"
+    )) {
         instrs.iter().any(|s| s.starts_with("bl "))
     } else {
         // FIXME: Add detection for other archs