target-mips: Fix incorrect code and test for INSV

[qemu.git] / coroutine-ucontext.c

diff --git a/coroutine-ucontext.c b/coroutine-ucontext.c
index 5f43083af5f2719d02b742b4b23435a07e97f7b7..784081ab18a7e7f0cbc7cfd10cfef7be27331402 100644 (file)
--- a/coroutine-ucontext.c
+++ b/coroutine-ucontext.c
@@ -30,6 +30,10 @@
 #include "qemu-common.h"
 #include "qemu-coroutine-int.h"
 
+#ifdef CONFIG_VALGRIND_H
+#include <valgrind/valgrind.h>
+#endif
+
 enum {
     /* Maximum free pool size prevents holding too many freed coroutines */
     POOL_MAX_SIZE = 64,
@@ -43,6 +47,11 @@ typedef struct {
     Coroutine base;
     void *stack;
     jmp_buf env;
+
+#ifdef CONFIG_VALGRIND_H
+    unsigned int valgrind_stack_id;
+#endif
+
 } CoroutineUContext;
 
 /**
@@ -159,6 +168,11 @@ static Coroutine *coroutine_new(void)
     uc.uc_stack.ss_size = stack_size;
     uc.uc_stack.ss_flags = 0;
 
+#ifdef CONFIG_VALGRIND_H
+    co->valgrind_stack_id =
+        VALGRIND_STACK_REGISTER(co->stack, co->stack + stack_size);
+#endif
+
     arg.p = co;
 
     makecontext(&uc, (void (*)(void))coroutine_trampoline,
@@ -185,6 +199,20 @@ Coroutine *qemu_coroutine_new(void)
     return co;
 }
 
+#ifdef CONFIG_VALGRIND_H
+#ifdef CONFIG_PRAGMA_DISABLE_UNUSED_BUT_SET
+/* Work around an unused variable in the valgrind.h macro... */
+#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
+#endif
+static inline void valgrind_stack_deregister(CoroutineUContext *co)
+{
+    VALGRIND_STACK_DEREGISTER(co->valgrind_stack_id);
+}
+#ifdef CONFIG_PRAGMA_DISABLE_UNUSED_BUT_SET
+#pragma GCC diagnostic error "-Wunused-but-set-variable"
+#endif
+#endif
+
 void qemu_coroutine_delete(Coroutine *co_)
 {
     CoroutineUContext *co = DO_UPCAST(CoroutineUContext, base, co_);
@@ -196,6 +224,10 @@ void qemu_coroutine_delete(Coroutine *co_)
         return;
     }
 
+#ifdef CONFIG_VALGRIND_H
+    valgrind_stack_deregister(co);
+#endif
+
     g_free(co->stack);
     g_free(co);
 }