target-arm: Override do_interrupt for ARMv7-M profile

[qemu.git] / coroutine-sigaltstack.c

diff --git a/coroutine-sigaltstack.c b/coroutine-sigaltstack.c
index b4d176200cac3a544a2dca4b2c79c47b277794f5..3de0bb33bdb511f37b2451d33ed736c61d27425d 100644 (file)
--- a/coroutine-sigaltstack.c
+++ b/coroutine-sigaltstack.c
@@ -36,7 +36,7 @@
 typedef struct {
     Coroutine base;
     void *stack;
-    jmp_buf env;
+    sigjmp_buf env;
 } CoroutineUContext;
 
 /**
@@ -50,7 +50,7 @@ typedef struct {
     CoroutineUContext leader;
 
     /** Information for the signal handler (trampoline) */
-    jmp_buf tr_reenter;
+    sigjmp_buf tr_reenter;
     volatile sig_atomic_t tr_called;
     void *tr_handler;
 } CoroutineThreadState;
@@ -95,8 +95,8 @@ static void __attribute__((constructor)) coroutine_init(void)
 static void coroutine_bootstrap(CoroutineUContext *self, Coroutine *co)
 {
     /* Initialize longjmp environment and switch back the caller */
-    if (!setjmp(self->env)) {
-        longjmp(*(jmp_buf *)co->entry_arg, 1);
+    if (!sigsetjmp(self->env, 0)) {
+        siglongjmp(*(sigjmp_buf *)co->entry_arg, 1);
     }
 
     while (true) {
@@ -125,14 +125,14 @@ static void coroutine_trampoline(int signal)
     /*
      * Here we have to do a bit of a ping pong between the caller, given that
      * this is a signal handler and we have to do a return "soon". Then the
-     * caller can reestablish everything and do a longjmp here again.
+     * caller can reestablish everything and do a siglongjmp here again.
      */
-    if (!setjmp(coTS->tr_reenter)) {
+    if (!sigsetjmp(coTS->tr_reenter, 0)) {
         return;
     }
 
     /*
-     * Ok, the caller has longjmp'ed back to us, so now prepare
+     * Ok, the caller has siglongjmp'ed back to us, so now prepare
      * us for the real machine state switching. We have to jump
      * into another function here to get a new stack context for
      * the auto variables (which have to be auto-variables
@@ -159,7 +159,7 @@ Coroutine *qemu_coroutine_new(void)
 
     /* The way to manipulate stack is with the sigaltstack function. We
      * prepare a stack, with it delivering a signal to ourselves and then
-     * put setjmp/longjmp where needed.
+     * put sigsetjmp/siglongjmp where needed.
      * This has been done keeping coroutine-ucontext as a model and with the
      * pth ideas (GNU Portable Threads). See coroutine-ucontext for the basics
      * of the coroutines and see pth_mctx.c (from the pth project) for the
@@ -200,7 +200,7 @@ Coroutine *qemu_coroutine_new(void)
 
     /*
      * Now transfer control onto the signal stack and set it up.
-     * It will return immediately via "return" after the setjmp()
+     * It will return immediately via "return" after the sigsetjmp()
      * was performed. Be careful here with race conditions.  The
      * signal can be delivered the first time sigsuspend() is
      * called.
@@ -241,8 +241,8 @@ Coroutine *qemu_coroutine_new(void)
      * type-conversion warnings related to the `volatile' qualifier and
      * the fact that `jmp_buf' usually is an array type.
      */
-    if (!setjmp(old_env)) {
-        longjmp(coTS->tr_reenter, 1);
+    if (!sigsetjmp(old_env, 0)) {
+        siglongjmp(coTS->tr_reenter, 1);
     }
 
     /*
@@ -270,9 +270,9 @@ CoroutineAction qemu_coroutine_switch(Coroutine *from_, Coroutine *to_,
 
     s->current = to_;
 
-    ret = setjmp(from->env);
+    ret = sigsetjmp(from->env, 0);
     if (ret == 0) {
-        longjmp(to->env, action);
+        siglongjmp(to->env, action);
     }
     return ret;
 }