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| author | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2003-08-11 22:21:18 +0000 |
|---|---|---|
| committer | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2003-08-11 22:21:18 +0000 |
| commit | 9257a9e49c324145d4a34d6a3a5ecffa16ddc063 (patch) | |
| tree | 8a7dca16dd4dba9ee72e0b87e4b6022a89d1de1c | |
| parent | 70a194b930797263bd6cb962d7f09596a07b4fef (diff) | |
| download | qemu-9257a9e49c324145d4a34d6a3a5ecffa16ddc063.tar.gz | |
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
| -rw-r--r-- | exec.h | 13 |
1 files changed, 8 insertions, 5 deletions
@@ -225,11 +225,14 @@ TranslationBlock *tb_find_pc(unsigned long pc_ptr); #if defined(__powerpc__) /* on PowerPC we patch the jump instruction directly */ -#define JUMP_TB(tbparam, n, eip)\ +#define JUMP_TB(opname, tbparam, n, eip)\ do {\ - static void __attribute__((unused)) *__op_label ## n = &&label ## n;\ - asm volatile ("b %0" : : "i" (&__op_jmp ## n));\ -label ## n:\ + asm volatile (".section \".data\"\n"\ + "__op_label" #n "." stringify(opname) ":\n"\ + ".long 1f\n"\ + ".previous\n"\ + "b __op_jmp" #n "\n"\ + "1:\n");\ T0 = (long)(tbparam) + (n);\ EIP = eip;\ EXIT_TB();\ @@ -239,7 +242,7 @@ label ## n:\ /* jump to next block operations (more portable code, does not need cache flushing, but slower because of indirect jump) */ -#define JUMP_TB(tbparam, n, eip)\ +#define JUMP_TB(opname, tbparam, n, eip)\ do {\ static void __attribute__((unused)) *__op_label ## n = &&label ## n;\ static void __attribute__((unused)) *dummy ## n = &&dummy_label ## n;\ |