diff options
Diffstat (limited to 'exec-all.h')
| -rw-r--r-- | exec-all.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/exec-all.h b/exec-all.h index 8ea057b79c..31914ee2f3 100644 --- a/exec-all.h +++ b/exec-all.h @@ -340,6 +340,24 @@ do {\ "1:\n");\ } while (0) +#elif defined(__s390__) +/* GCC spills R13, so we have to restore it before branching away */ + +#define GOTO_TB(opname, tbparam, n)\ +do {\ + static void __attribute__((used)) *dummy ## n = &&dummy_label ## n;\ + static void __attribute__((used)) *__op_label ## n \ + __asm__(ASM_OP_LABEL_NAME(n, opname)) = &&label ## n;\ + __asm__ __volatile__ ( \ + "l %%r13,52(%%r15)\n" \ + "br %0\n" \ + : : "r" (((TranslationBlock*)tbparam)->tb_next[n]));\ + \ + for(;*((int*)0);); /* just to keep GCC busy */ \ +label ## n: ;\ +dummy_label ## n: ;\ +} while(0) + #else /* jump to next block operations (more portable code, does not need |