Organize source code and tests

1 files changed, 63 insertions, 0 deletions

diff --git a/tests/test_random.bash b/tests/test_random.bash
new file mode 100644
index 0000000..3c7a0d2
--- /dev/null
+++ b/tests/test_random.bash
@@ -0,0 +1,63 @@
+#!/usr/bin/env bash
+#
+# SPDX-License-Identifier: Unlicense
+#
+# Tests against m68k-none-elf-as.
+
+AS=m68k-none-elf-as
+OBJCOPY=m68k-none-elf-objcopy
+LD="m68k-none-elf-ld -Ttest.ld"
+DISASM="../cmake-build/m68k-disasm -frdc -fxrefs-to -fxrefs-from -flabels -frel-labels -fabs-labels -fshort-ref-local-labels -fimm-hex -ffollow-jumps"
+TEST_DIR=/tmp/m68k-disasm-random-tests
+
+set -e
+CRED="\033[31m"
+CGREEN="\033[32m"
+CRST="\033[39m"
+
+rm -rf ${TEST_DIR}
+mkdir -p ${TEST_DIR}
+
+run_test_random() {
+  local pass_number=$1
+  local blocks_count=$2
+  local test_name_sanitized=${pass_number//[^a-zA-Z0-9_\-]/-}
+  local file_orig_bin=${TEST_DIR}/${test_name_sanitized}.orig.bin
+  local file_asm=${TEST_DIR}/${test_name_sanitized}.S
+  local file_as_o=${TEST_DIR}/${test_name_sanitized}.as.o
+  local file_as_elf=${TEST_DIR}/${test_name_sanitized}.as.elf
+  local file_as_bin=${TEST_DIR}/${test_name_sanitized}.as.bin
+  echo -ne "Test random, pass ${pass_number}... "
+  dd if=/dev/urandom of=${file_orig_bin} bs=1024 count=${blocks_count} >/dev/null 2>&1
+  ${DISASM} -o ${file_asm} ${file_orig_bin}
+  ${AS} -o ${file_as_o} ${file_asm}
+  ${LD} -o ${file_as_elf} ${file_as_o}
+  ${OBJCOPY} ${file_as_elf} -O binary ${file_as_bin}
+  if ! cmp ${file_orig_bin} ${file_as_bin}; then
+    echo -e "${CRED}FAIL${CRST}: output and input binaries do not match"
+    hexdump -Cv ${file_orig_bin} >${file_orig_bin}.txt
+    hexdump -Cv ${file_as_bin} >${file_as_bin}.txt
+    echo ${file_orig_bin}
+    echo ${file_as_bin}
+    exit
+  else
+    echo -e "${CGREEN}OK${CRST}"
+    rm ${file_orig_bin} ${file_asm} ${file_as_o} ${file_as_elf} ${file_as_bin}
+  fi
+}
+
+# Tiny tests are mostly for ensuring that bounds checking is working properly,
+# because it is more likely to encounter something that looks like a truncated
+# instruction.
+#
+# If there is an obvious bug, then it will most likely be detected
+# here and it is easier to dissect tiny test blob than huge test trying to debug
+# single test case.
+for i in `seq 1 1000`; do
+  run_test_random tiny$i 1
+done
+
+# Huge tests are for the broad coverage. They catch a lot!
+for i in `seq 1 10`; do
+  run_test_random huge$i 1024
+done