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); @@ -225,11 +225,14 @@ TranslationBlock *tb_find_pc(unsigned long pc_ptr);
225 #if defined(__powerpc__) 225 #if defined(__powerpc__)
226 226
227 /* on PowerPC we patch the jump instruction directly */ 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 do {\ 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 T0 = (long)(tbparam) + (n);\ 236 T0 = (long)(tbparam) + (n);\
234 EIP = eip;\ 237 EIP = eip;\
235 EXIT_TB();\ 238 EXIT_TB();\
@@ -239,7 +242,7 @@ label ## n:\ @@ -239,7 +242,7 @@ label ## n:\
239 242
240 /* jump to next block operations (more portable code, does not need 243 /* jump to next block operations (more portable code, does not need
241 cache flushing, but slower because of indirect jump) */ 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 do {\ 246 do {\
244 static void __attribute__((unused)) *__op_label ## n = &&label ## n;\ 247 static void __attribute__((unused)) *__op_label ## n = &&label ## n;\
245 static void __attribute__((unused)) *dummy ## n = &&dummy_label ## n;\ 248 static void __attribute__((unused)) *dummy ## n = &&dummy_label ## n;\