gwj / at91sam9263 · Commits

Commit 9257a9e49c324145d4a34d6a3a5ecffa16ddc063

Authored by bellard
1 parent 70a194b9

workaround for gcc 3.3 bug or overoptimisation if a label is not used 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@368 c046a42c-6fe2-441c-8c8c-71466251a162
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Showing 1 changed file with 8 additions and 5 deletions
... ... @@ -225,11 +225,14 @@ TranslationBlock *tb_find_pc(unsigned long pc_ptr);
225 225 #if defined(__powerpc__)
226 226  
227 227 /* on PowerPC we patch the jump instruction directly */
228   -#define JUMP_TB(tbparam, n, eip)\
  228 +#define JUMP_TB(opname, tbparam, n, eip)\
229 229 do {\
230   - static void __attribute__((unused)) *__op_label ## n = &&label ## n;\
231   - asm volatile ("b %0" : : "i" (&__op_jmp ## n));\
232   -label ## n:\
  230 + asm volatile (".section \".data\"\n"\
  231 + "__op_label" #n "." stringify(opname) ":\n"\
  232 + ".long 1f\n"\
  233 + ".previous\n"\
  234 + "b __op_jmp" #n "\n"\
  235 + "1:\n");\
233 236 T0 = (long)(tbparam) + (n);\
234 237 EIP = eip;\
235 238 EXIT_TB();\
... ... @@ -239,7 +242,7 @@ label ## n:\
239 242  
240 243 /* jump to next block operations (more portable code, does not need
241 244 cache flushing, but slower because of indirect jump) */
242   -#define JUMP_TB(tbparam, n, eip)\
  245 +#define JUMP_TB(opname, tbparam, n, eip)\
243 246 do {\
244 247 static void __attribute__((unused)) *__op_label ## n = &&label ## n;\
245 248 static void __attribute__((unused)) *dummy ## n = &&dummy_label ## n;\
... ...