Version 0.4.00.4.0

1 files changed, 124 insertions, 0 deletions

diff --git a/tests/tst-env-preload-runner.sh b/tests/tst-env-preload-runner.sh
new file mode 100755
index 0000000..5f49e9b
--- /dev/null
+++ b/tests/tst-env-preload-runner.sh
@@ -0,0 +1,124 @@
+#!/bin/sh
+set -eu
+
+: "${CPU_AS:?}" "${CPU_LD:?}" "${CPU_RUN:?}"
+
+TMP=${TMPDIR:-/tmp}/libmcpu-env-preload-$$
+mkdir -p "$TMP/lib"
+trap 'rm -rf "$TMP"' EXIT HUP INT TERM
+
+cat > "$TMP/main.s" <<'EOS'
+.global _life
+.global foo
+.text
+_start_life:
+        LDI     r64@0x00000, 40
+        CALL    foo
+        MOV     r64@0x00018, r64@0x00000
+        LDI     r32@0x00030, 0
+        EXIT    r32@0x00030
+foo:
+        LDI     r64@0x00008, 1
+        IADD    r64@0x00000, r64@0x00000, r64@0x00008
+        RET
+EOS
+
+cat > "$TMP/a.s" <<'EOS'
+.global foo
+.text
+foo:
+        LDI     r64@0x00008, 2
+        IADD    r64@0x00000, r64@0x00000, r64@0x00008
+        RET
+EOS
+
+cat > "$TMP/b.s" <<'EOS'
+.global foo
+.text
+foo:
+        LDI     r64@0x00008, 3
+        IADD    r64@0x00000, r64@0x00000, r64@0x00008
+        RET
+EOS
+
+"$CPU_AS" -o "$TMP/main.o" "$TMP/main.s"
+"$CPU_AS" -o "$TMP/a.o" "$TMP/a.s"
+"$CPU_AS" -o "$TMP/b.o" "$TMP/b.s"
+"$CPU_LD" --dynamic --stack-size=4096 --no-heap -o "$TMP/main" "$TMP/main.o"
+"$CPU_LD" --shared --soname=liba.so.1 -o "$TMP/lib/liba.so.1" "$TMP/a.o"
+"$CPU_LD" --shared --soname=libb.so.1 -o "$TMP/lib/libb.so.1" "$TMP/b.o"
+ln -s liba.so.1 "$TMP/lib/liba.so"
+ln -s libb.so.1 "$TMP/lib/libb.so"
+
+# Empty environment is the normal no-preload baseline.
+[ "`MCPU_LD_PRELOAD= "$CPU_RUN" --library-path="$TMP/lib" \
+      --int-reg=r64@0x00018 "$TMP/main"`" = 41 ]
+
+# Environment-only preload uses the same resolver and rightmost-wins ordering.
+[ "`MCPU_LD_PRELOAD=liba.so "$CPU_RUN" --library-path="$TMP/lib" \
+      --int-reg=r64@0x00018 "$TMP/main"`" = 42 ]
+[ "`MCPU_LD_PRELOAD=liba.so:libb.so "$CPU_RUN" --library-path="$TMP/lib" \
+      --int-reg=r64@0x00018 "$TMP/main"`" = 43 ]
+[ "`MCPU_LD_PRELOAD=libb.so:liba.so "$CPU_RUN" --library-path="$TMP/lib" \
+      --int-reg=r64@0x00018 "$TMP/main"`" = 42 ]
+
+# Command-line preload entries are appended after environment entries, so the
+# established rightmost-higher-priority rule makes command line stronger.
+[ "`MCPU_LD_PRELOAD=liba.so "$CPU_RUN" --library-path="$TMP/lib" \
+      --ldpreload=libb.so --int-reg=r64@0x00018 "$TMP/main"`" = 43 ]
+[ "`MCPU_LD_PRELOAD=libb.so "$CPU_RUN" --library-path="$TMP/lib" \
+      --ldpreload=liba.so --int-reg=r64@0x00018 "$TMP/main"`" = 42 ]
+[ "`MCPU_LD_PRELOAD=liba.so:libb.so "$CPU_RUN" --library-path="$TMP/lib" \
+      --ldpreload=libb.so:liba.so --int-reg=r64@0x00018 "$TMP/main"`" = 42 ]
+
+# Environment preload is equivalent to --ldpreload for ABI compatibility: an
+# ABI-v1 static executable must reject it just as it rejects the CLI option.
+"$CPU_LD" --stack-size=4096 --no-heap -o "$TMP/static" "$TMP/main.o"
+if MCPU_LD_PRELOAD="$TMP/lib/liba.so.1" "$CPU_RUN" "$TMP/static" \
+     >/dev/null 2>"$TMP/static.err"; then
+  echo "ABI-v1 executable unexpectedly accepted MCPU_LD_PRELOAD" >&2
+  exit 1
+fi
+grep -q 'dynamic modules require' "$TMP/static.err"
+
+# The environment preload is independent of configuration suppression.  An
+# explicit pathname therefore still works under --no-config.
+[ "`MCPU_LD_PRELOAD="$TMP/lib/liba.so.1" "$CPU_RUN" --no-config \
+      --int-reg=r64@0x00018 "$TMP/main"`" = 42 ]
+
+# Environment preload remains an explicit override above a normal dependency.
+cat > "$TMP/import.s" <<'EOS'
+.global _life
+.extern foo
+.text
+_start_life:
+        LDI     r64@0x00000, 40
+        CALL    foo
+        MOV     r64@0x00018, r64@0x00000
+        LDI     r32@0x00030, 0
+        EXIT    r32@0x00030
+EOS
+"$CPU_AS" -o "$TMP/import.o" "$TMP/import.s"
+"$CPU_LD" --dynamic --stack-size=4096 --no-heap -L"$TMP/lib" -la \
+  -o "$TMP/import" "$TMP/import.o"
+[ "`MCPU_LD_PRELOAD=libb.so "$CPU_RUN" --library-path="$TMP/lib" \
+      --int-reg=r64@0x00018 "$TMP/import"`" = 43 ]
+
+# Invalid environment lists and missing names are hard errors.
+if MCPU_LD_PRELOAD=liba.so::libb.so "$CPU_RUN" --library-path="$TMP/lib" \
+     "$TMP/main" >/dev/null 2>"$TMP/bad-list.err"; then
+  echo "malformed MCPU_LD_PRELOAD unexpectedly accepted" >&2
+  exit 1
+fi
+grep -q 'MCPU_LD_PRELOAD' "$TMP/bad-list.err"
+
+if MCPU_LD_PRELOAD=does-not-exist.so "$CPU_RUN" --library-path="$TMP/lib" \
+     "$TMP/main" >/dev/null 2>"$TMP/missing.err"; then
+  echo "missing MCPU_LD_PRELOAD library unexpectedly accepted" >&2
+  exit 1
+fi
+grep -q 'MCPU_LD_PRELOAD' "$TMP/missing.err"
+
+MCPU_LD_PRELOAD= "$CPU_RUN" --help 2>&1 | grep -q 'MCPU_LD_PRELOAD'
+
+exit 0