dbghelp/tests: Add a simple test for StackWalk64().

Signed-off-by: Zebediah Figura <z.figura12@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

configure

@@ -18687,6 +18687,7 @@ wine_fn_config_makefile dlls/d3dxof/tests enable_tests
 wine_fn_config_makefile dlls/davclnt enable_davclnt
 wine_fn_config_makefile dlls/dbgeng enable_dbgeng
 wine_fn_config_makefile dlls/dbghelp enable_dbghelp
+wine_fn_config_makefile dlls/dbghelp/tests enable_tests
 wine_fn_config_makefile dlls/dciman32 enable_dciman32
 wine_fn_config_makefile dlls/ddeml.dll16 enable_win16
 wine_fn_config_makefile dlls/ddraw enable_ddraw

configure.ac

@@ -3186,6 +3186,7 @@ WINE_CONFIG_MAKEFILE(dlls/d3dxof/tests)
 WINE_CONFIG_MAKEFILE(dlls/davclnt)
 WINE_CONFIG_MAKEFILE(dlls/dbgeng)
 WINE_CONFIG_MAKEFILE(dlls/dbghelp)
+WINE_CONFIG_MAKEFILE(dlls/dbghelp/tests)
 WINE_CONFIG_MAKEFILE(dlls/dciman32)
 WINE_CONFIG_MAKEFILE(dlls/ddeml.dll16,enable_win16)
 WINE_CONFIG_MAKEFILE(dlls/ddraw)

dlls/dbghelp/tests/Makefile.in

@@ -0,0 +1,5 @@
+TESTDLL   = dbghelp.dll
+IMPORTS   = dbghelp
+
+C_SRCS = \
+	dbghelp.c

dlls/dbghelp/tests/dbghelp.c

@@ -0,0 +1,144 @@
+/*
+ * Copyright 2018 Zebediah Figura
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#include "windef.h"
+#include "verrsrc.h"
+#include "dbghelp.h"
+#include "wine/test.h"
+
+#if defined(__i386__) || defined(__x86_64__)
+
+DWORD CALLBACK stack_walk_thread(void *arg)
+{
+    DWORD count = SuspendThread(GetCurrentThread());
+    ok(!count, "got %d\n", count);
+    return 0;
+}
+
+static void test_stack_walk(void)
+{
+    char si_buf[sizeof(SYMBOL_INFO) + 200];
+    SYMBOL_INFO *si = (SYMBOL_INFO *)si_buf;
+    STACKFRAME64 frame = {{0}}, frame0;
+    BOOL found_our_frame = FALSE;
+    DWORD machine;
+    HANDLE thread;
+    DWORD64 disp;
+    CONTEXT ctx;
+    DWORD count;
+    BOOL ret;
+
+    thread = CreateThread(NULL, 0, stack_walk_thread, NULL, 0, NULL);
+
+    /* wait for the thread to suspend itself */
+    do
+    {
+        Sleep(50);
+        count = SuspendThread(thread);
+        ResumeThread(thread);
+    }
+    while (!count);
+
+    ctx.ContextFlags = CONTEXT_CONTROL;
+    ret = GetThreadContext(thread, &ctx);
+    ok(ret, "got error %u\n", ret);
+
+    frame.AddrPC.Mode    = AddrModeFlat;
+    frame.AddrFrame.Mode = AddrModeFlat;
+    frame.AddrStack.Mode = AddrModeFlat;
+
+#ifdef __i386__
+    machine = IMAGE_FILE_MACHINE_I386;
+
+    frame.AddrPC.Segment = ctx.SegCs;
+    frame.AddrPC.Offset = ctx.Eip;
+    frame.AddrFrame.Segment = ctx.SegSs;
+    frame.AddrFrame.Offset = ctx.Ebp;
+    frame.AddrStack.Segment = ctx.SegSs;
+    frame.AddrStack.Offset = ctx.Esp;
+#elif defined(__x86_64__)
+    machine = IMAGE_FILE_MACHINE_AMD64;
+
+    frame.AddrPC.Segment = ctx.SegCs;
+    frame.AddrPC.Offset = ctx.Rip;
+    frame.AddrFrame.Segment = ctx.SegSs;
+    frame.AddrFrame.Offset = ctx.Rbp;
+    frame.AddrStack.Segment = ctx.SegSs;
+    frame.AddrStack.Offset = ctx.Rsp;
+#endif
+    frame0 = frame;
+
+    /* first invocation just calculates the return address */
+    ret = StackWalk64(machine, GetCurrentProcess(), thread, &frame, &ctx, NULL,
+        SymFunctionTableAccess64, SymGetModuleBase64, NULL);
+    ok(ret, "StackWalk64() failed: %u\n", GetLastError());
+    ok(frame.AddrPC.Offset == frame0.AddrPC.Offset, "expected %s, got %s\n",
+        wine_dbgstr_longlong(frame0.AddrPC.Offset),
+        wine_dbgstr_longlong(frame.AddrPC.Offset));
+    ok(frame.AddrStack.Offset == frame0.AddrStack.Offset, "expected %s, got %s\n",
+        wine_dbgstr_longlong(frame0.AddrStack.Offset),
+        wine_dbgstr_longlong(frame.AddrStack.Offset));
+    ok(frame.AddrReturn.Offset && frame.AddrReturn.Offset != frame.AddrPC.Offset,
+        "got bad return address %s\n", wine_dbgstr_longlong(frame.AddrReturn.Offset));
+
+    while (frame.AddrReturn.Offset)
+    {
+        char *addr;
+
+        ret = StackWalk64(machine, GetCurrentProcess(), thread, &frame, &ctx, NULL,
+            SymFunctionTableAccess64, SymGetModuleBase64, NULL);
+        ok(ret, "StackWalk64() failed: %u\n", GetLastError());
+
+        addr = (void *)(DWORD_PTR)frame.AddrPC.Offset;
+
+        if (addr > (char *)stack_walk_thread && addr < (char *)stack_walk_thread + 0x100)
+        {
+            found_our_frame = TRUE;
+
+            si->SizeOfStruct = sizeof(SYMBOL_INFO);
+            si->MaxNameLen = 200;
+            if (SymFromAddr(GetCurrentProcess(), frame.AddrPC.Offset, &disp, si))
+                ok(!strcmp(si->Name, "stack_walk_thread"), "got wrong name %s\n", si->Name);
+        }
+    }
+
+    ret = StackWalk64(machine, GetCurrentProcess(), thread, &frame, &ctx, NULL,
+        SymFunctionTableAccess64, SymGetModuleBase64, NULL);
+    ok(!ret, "StackWalk64() should have failed\n");
+
+    ok(found_our_frame, "didn't find stack_walk_thread frame\n");
+}
+
+#else /* __i386__ || __x86_64__ */
+
+static void test_stack_walk(void)
+{
+}
+
+#endif /* __i386__ || __x86_64__ */
+
+START_TEST(dbghelp)
+{
+    BOOL ret = SymInitialize(GetCurrentProcess(), NULL, TRUE);
+    ok(ret, "got error %u\n", GetLastError());
+
+    test_stack_walk();
+
+    ret = SymCleanup(GetCurrentProcess());
+    ok(ret, "got error %u\n", GetLastError());
+}