[RFC v4 10/11] tests/tcg/multiarch: Add nativecall.c test

[Yeqi Fu]

Introduce a new test for native calls to ensure their functionality.
The process involves cross-compiling the test cases, building them
as dynamically linked binaries, and running these binaries which
necessitates the addition of the appropriate interpreter prefix.

Signed-off-by: Yeqi Fu <fufuyqqqqqq@gmail.com>
---
 tests/tcg/multiarch/Makefile.target     | 17 +++++
 tests/tcg/multiarch/native/nativecall.c | 98 +++++++++++++++++++++++++
 2 files changed, 115 insertions(+)
 create mode 100644 tests/tcg/multiarch/native/nativecall.c

diff --git a/tests/tcg/multiarch/Makefile.target 
b/tests/tcg/multiarch/Makefile.target
index 43bddeaf21..5231df34ba 100644
--- a/tests/tcg/multiarch/Makefile.target
+++ b/tests/tcg/multiarch/Makefile.target
@@ -138,5 +138,22 @@ run-plugin-semiconsole-with-%:
 TESTS += semihosting semiconsole
 endif
 
+nativecall: native/nativecall.c
+       $(CC) $(CFLAGS) $(EXTRA_CFLAGS) $< -o $@ $(filter-out 
-static,$(LDFLAGS))
+
+ifneq ($(LD_PREFIX),)
+ifneq ($(wildcard $(LIBNATIVE)),)
+run-nativecall: nativecall
+       $(call run-test,$<, $(QEMU) -L $(LD_PREFIX) --native-bypass 
$(LIBNATIVE) $<, "nativecall")
+else
+run-nativecall: nativecall
+       $(call skip-test, $<, "no native library found")
+endif
+else
+run-nativecall: nativecall
+       $(call skip-test, $<, "no elf interpreter prefix found")
+endif
+EXTRA_RUNS += run-nativecall
+
 # Update TESTS
 TESTS += $(MULTIARCH_TESTS)
diff --git a/tests/tcg/multiarch/native/nativecall.c 
b/tests/tcg/multiarch/native/nativecall.c
new file mode 100644
index 0000000000..d3f6f49ed0
--- /dev/null
+++ b/tests/tcg/multiarch/native/nativecall.c
@@ -0,0 +1,98 @@
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+
+void compare_memory(const void *a, const void *b, size_t n)
+{
+    const unsigned char *p1 = a;
+    const unsigned char *p2 = b;
+    for (size_t i = 0; i < n; i++) {
+        assert(p1[i] == p2[i]);
+    }
+}
+
+void test_memcpy()
+{
+    char src[] = "Hello, world!";
+    char dest[20];
+    memcpy(dest, src, 13);
+    compare_memory(dest, src, 13);
+}
+
+void test_strncpy()
+{
+    char src[] = "Hello, world!";
+    char dest[20];
+    strncpy(dest, src, 13);
+    compare_memory(dest, src, 13);
+}
+
+void test_strcpy()
+{
+    char src[] = "Hello, world!";
+    char dest[20];
+    strcpy(dest, src);
+    compare_memory(dest, src, 13);
+}
+
+void test_strcat()
+{
+    char src[20] = "Hello, ";
+    char dst[] = "world!";
+    char str[] = "Hello, world!";
+    strcat(src, dest);
+    compare_memory(src, str, 13);
+}
+
+void test_memcmp()
+{
+    char str1[] = "abc";
+    char str2[] = "abc";
+    char str3[] = "def";
+    assert(memcmp(str1, str2, 3) == 0);
+    assert(memcmp(str1, str3, 3) != 0);
+}
+
+void test_strncmp()
+{
+    char str1[] = "abc";
+    char str2[] = "abc";
+    char str3[] = "def";
+    assert(strncmp(str1, str2, 2) == 0);
+    assert(strncmp(str1, str3, 2) != 0);
+}
+
+void test_strcmp()
+{
+    char str1[] = "abc";
+    char str2[] = "abc";
+    char str3[] = "def";
+    assert(strcmp(str1, str2) == 0);
+    assert(strcmp(str1, str3) != 0);
+}
+
+void test_memset()
+{
+    char buffer[10];
+    memset(buffer, 'A', 10);
+    int i;
+    for (i = 0; i < 10; i++) {
+        assert(buffer[i] == 'A');
+    }
+}
+
+int main()
+{
+    test_memset();
+    test_memcpy();
+    test_strncpy();
+    test_memcmp();
+    test_strncmp();
+    test_strcpy();
+    test_strcmp();
+    test_strcat();
+
+    return EXIT_SUCCESS;
+}
-- 
2.34.1