ARMv7-M interrupt stack alignment fix.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4823 c046a42c-6fe2-441c-8c8c-71466251a162

diff --git a/target-arm/helper.c b/target-arm/helper.c
index 8e8543525297939287b5b08045997ed013f85932..32c2c2e2821342ada136e51d5644afbe88cf40a9 100644 (file)
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -674,7 +674,7 @@ void do_interrupt_v7m(CPUARMState *env)
     /* ??? Should only do this if Configuration Control Register
        STACKALIGN bit is set.  */
     if (env->regs[13] & 4) {
-        env->regs[13] += 4;
+        env->regs[13] -= 4;
         xpsr |= 0x200;
     }
     /* Switch to the handler mode.  */