#!/bin/sh
set -eu

: "${PACKAGE_VERSION:?}"

: "${CPU_AS:?}" "${CPU_LD:?}" "${CPU_READELF:?}" "${TEST_SRCDIR:?}"

TMP=${TMPDIR:-/tmp}/libmcpu-readelf-$$
mkdir -p "$TMP"
trap 'rm -rf "$TMP"' EXIT HUP INT TERM

EXAMPLES=`cd "$TEST_SRCDIR/fixtures/shared-libs" && pwd`

"$CPU_AS" -o "$TMP/main.o" "$EXAMPLES/dynamic-main.s"
"$CPU_AS" -o "$TMP/liba.o" "$EXAMPLES/dynamic-liba.s"

"$CPU_LD" --dynamic --stack-size=4096 --no-heap \
  -o "$TMP/main" "$TMP/main.o"
"$CPU_LD" --shared --soname=liba.so.1 -o "$TMP/liba.so" "$TMP/liba.o"

"$CPU_READELF" -h -S -s -r "$TMP/main.o" > "$TMP/rel.txt"
grep -q 'REL (Relocatable file)' "$TMP/rel.txt"
grep -q "Symbol table '.symtab'" "$TMP/rel.txt"
grep -q "Relocation section '.rela.text'" "$TMP/rel.txt"
grep -q 'R_MCPU_CODE64' "$TMP/rel.txt"

"$CPU_READELF" -a "$TMP/main" > "$TMP/exec.txt"
grep -q 'ABI Version:                       3' "$TMP/exec.txt"
grep -q 'EXEC (Executable file)' "$TMP/exec.txt"
grep -q 'Program Headers:' "$TMP/exec.txt"
grep -q 'MCPU_STACK' "$TMP/exec.txt"
grep -q "Symbol table '.dynsym'" "$TMP/exec.txt"
grep -q 'MCPU target attributes:' "$TMP/exec.txt"
grep -q 'MCPU lifecycle attributes:' "$TMP/exec.txt"
grep -q "Dynamic section '.dynamic'" "$TMP/exec.txt"
grep -q 'NULL' "$TMP/exec.txt"

"$CPU_READELF" -hSlrsdA "$TMP/liba.so" > "$TMP/dyn.txt"
grep -q 'DYN (Shared object file)' "$TMP/dyn.txt"
grep -q "Symbol table '.dynsym'" "$TMP/dyn.txt"
grep -q 'foo' "$TMP/dyn.txt"
grep -q 'MCPU target attributes:' "$TMP/dyn.txt"
grep -q 'ABI Version:                       3' "$TMP/dyn.txt"
grep -q "Dynamic section '.dynamic'" "$TMP/dyn.txt"
grep -q 'SONAME' "$TMP/dyn.txt"
grep -q 'Library soname: \[liba.so.1\]' "$TMP/dyn.txt"

# Section Headers are intentionally wide: one section occupies exactly one
# physical output line rather than a wrapped two-line record.
"$CPU_READELF" -S "$TMP/main" > "$TMP/sections.txt"
grep -q '^  \[Nr\] Name.*Size.*EntSize.*Flags Link Info Align$' "$TMP/sections.txt"
section_count=`grep -c '^  \[[ 0-9][ 0-9]\] ' "$TMP/sections.txt"`
test "$section_count" -gt 0
if grep -q '^       [0-9a-f][0-9a-f]* ' "$TMP/sections.txt"; then
  echo "mcpu-readelf unexpectedly wrapped a section header" >&2
  exit 1
fi

"$CPU_READELF" --version | grep -Fq "$PACKAGE_VERSION"
"$CPU_READELF" --help | grep -q -- '--arch-specific'
"$CPU_READELF" --help | grep -q -- '--dynamic'

printf 'not MELF\n' > "$TMP/bad"
if "$CPU_READELF" -h "$TMP/bad" >/dev/null 2>&1; then
  echo "mcpu-readelf unexpectedly accepted a non-MELF file" >&2
  exit 1
fi

exit 0