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Fiddly dyngen bits for s390 host support, by Ulrich Hecht.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3105 c046a42c-6fe2-441c-8c8c-71466251a162
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ths 2007-07-31 23:46:55 +00:00
parent 8f860bb83c
commit 9bbc5cc829
2 changed files with 19 additions and 1 deletions
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2
dyngen-exec.h
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@ -254,7 +254,7 @@ extern int __op_jmp0, __op_jmp1, __op_jmp2, __op_jmp3;
#define GOTO_LABEL_PARAM(n) asm volatile ("b " ASM_NAME(__op_gen_label) #n)
#elif defined(__s390__)
#define EXIT_TB() asm volatile ("br %r14")
#define GOTO_LABEL_PARAM(n) asm volatile ("b " ASM_NAME(__op_gen_label) #n)
#define GOTO_LABEL_PARAM(n) asm volatile ("bras %r7,8; .long " ASM_NAME(__op_gen_label) #n "; l %r7, 0(%r7); br %r7")
#elif defined(__alpha__)
#define EXIT_TB() asm volatile ("ret")
#elif defined(__ia64__)

18
exec-all.h
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@ -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