gwj / at91sam9263 · Commits

Commit e026db5893aeff66bbc1153002b5285bc361c0a2

Authored by bellard
1 parent 43f04c23

alpha support 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@111 c046a42c-6fe2-441c-8c8c-71466251a162
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Showing 1 changed file with 19 additions and 0 deletions
exec-i386.c
  View file @e026db5
... ... @@ -102,6 +102,25 @@ static inline int testandset (int *p)
102 102 }
103 103 #endif
104 104  
  105 +#ifdef __alpha__
  106 +int testandset (int *p)
  107 +{
  108 + int ret;
  109 + unsigned long one;
  110 +
  111 + __asm__ __volatile__ ("0: mov 1,%2\n"
  112 + " ldl_l %0,%1\n"
  113 + " stl_c %2,%1\n"
  114 + " beq %2,1f\n"
  115 + ".subsection 2\n"
  116 + "1: br 0b\n"
  117 + ".previous"
  118 + : "=r" (ret), "=m" (*p), "=r" (one)
  119 + : "m" (*p));
  120 + return ret;
  121 +}
  122 +#endif
  123 +
105 124 int global_cpu_lock = 0;
106 125  
107 126 void cpu_lock(void)
... ...