[Skiboot] [PATCH 3/6] core/test: add more test stubs

[Oliver O'Halloran]

Adds a new kind of stub, the no-op stub which does nothing rather than
calling abort(). Also redefines them as weak symbols so that if the
thing being tested changes to require a normally stubbed function we
can just add the actual function to the test.

Signed-off-by: Oliver O'Halloran <oohall at gmail.com>
---
 core/test/Makefile.check |  5 -----
 core/test/run-api-test.c |  1 -
 core/test/run-msg.c      |  3 ---
 core/test/stubs.c        | 38 +++++++++++++++++++++++++++++++++++++-
 4 files changed, 37 insertions(+), 10 deletions(-)

diff --git a/core/test/Makefile.check b/core/test/Makefile.check
index 1467a9f6c27c..813bd0207d8c 100644
--- a/core/test/Makefile.check
+++ b/core/test/Makefile.check
@@ -25,11 +25,6 @@ CORE_TEST := \
 
 HOSTCFLAGS+=-I . -I include
 
-CORE_TEST_NOSTUB := core/test/run-console-log
-CORE_TEST_NOSTUB += core/test/run-console-log-buf-overrun
-CORE_TEST_NOSTUB += core/test/run-console-log-pr_fmt
-CORE_TEST_NOSTUB += core/test/run-api-test
-
 LCOV_EXCLUDE += $(CORE_TEST:%=%.c) core/test/stubs.c
 LCOV_EXCLUDE += $(CORE_TEST_NOSTUB:%=%.c) /usr/include/*
 
diff --git a/core/test/run-api-test.c b/core/test/run-api-test.c
index 583910dfd6c7..10f4cec8f11e 100644
--- a/core/test/run-api-test.c
+++ b/core/test/run-api-test.c
@@ -28,7 +28,6 @@
 #include <opal-internal.h>
 
 #define __TEST__
-unsigned long top_of_ram;	/* Fake it here */
 int main(void)
 {
 	unsigned long addr = 0xd000000000000000;
diff --git a/core/test/run-msg.c b/core/test/run-msg.c
index 3a7b7dd395f2..66b8429729ea 100644
--- a/core/test/run-msg.c
+++ b/core/test/run-msg.c
@@ -23,9 +23,6 @@
 static bool zalloc_should_fail = false;
 static int zalloc_should_fail_after = 0;
 
-/* Fake top_of_ram -- needed for API's */
-unsigned long top_of_ram = 16ULL * 1024 * 1024 * 1024;
-
 static void *zalloc(size_t size)
 {
         if (zalloc_should_fail && zalloc_should_fail_after == 0) {
diff --git a/core/test/stubs.c b/core/test/stubs.c
index 39ff18d8f103..426abe2e36e6 100644
--- a/core/test/stubs.c
+++ b/core/test/stubs.c
@@ -17,6 +17,8 @@
 #include <stdio.h>
 #include <stdarg.h>
 
+#define __weak __attribute__((weak))
+
 #include "../../ccan/list/list.c"
 
 void _prlog(int log_level __attribute__((unused)), const char* fmt, ...) __attribute__((format (printf, 2, 3)));
@@ -24,9 +26,11 @@ void _prlog(int log_level __attribute__((unused)), const char* fmt, ...) __attri
 #ifndef pr_fmt
 #define pr_fmt(fmt) fmt
 #endif
+
+#ifndef prlog
 #define prlog(l, f, ...) do { _prlog(l, pr_fmt(f), ##__VA_ARGS__); } while(0)
 
-void _prlog(int log_level __attribute__((unused)), const char* fmt, ...)
+void __attribute__((weak)) _prlog(int log_level __attribute__((unused)), const char* fmt, ...)
 {
         va_list ap;
 
@@ -34,6 +38,7 @@ void _prlog(int log_level __attribute__((unused)), const char* fmt, ...)
         vprintf(fmt, ap);
         va_end(ap);
 }
+#endif
 
 /* Add any stub functions required for linking here. */
 static void stub_function(void)
@@ -41,9 +46,17 @@ static void stub_function(void)
 	abort();
 }
 
+static int noop_function(void)
+{
+	return 0;
+}
+
 #define STUB(fnname) \
 	void fnname(void) __attribute__((weak, alias ("stub_function")))
 
+#define NOOP_STUB(fnname) \
+	void fnname(void) __attribute__((weak, alias ("noop_function")))
+
 STUB(fdt_begin_node);
 STUB(fdt_property);
 STUB(fdt_end_node);
@@ -61,3 +74,26 @@ STUB(dt_next);
 STUB(dt_has_node_property);
 STUB(dt_get_address);
 STUB(add_chip_dev_associativity);
+
+STUB(__dt_add_property_cells);
+STUB(dt_add_property_string);
+STUB(dt_del_property);
+STUB(dt_find_by_name);
+STUB(__dt_find_property);
+STUB(dt_new);
+STUB(dt_new_addr);
+STUB(opal_add_poller);
+STUB(__opal_register);
+
+/* stop the stubbed lock functions from clashing with the real prototypes */
+#define __LOCK_H
+
+NOOP_STUB(lock_recursive);
+NOOP_STUB(lock);
+NOOP_STUB(unlock);
+NOOP_STUB(opal_update_pending_evt);
+
+unsigned long __weak top_of_ram = 16ULL * 1024 * 1024 * 1024;
+
+struct dt_node *opal_node = NULL;
+struct dt_node *dt_chosen = NULL;
-- 
2.9.3