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suppressed JUMP_TB (Paul Brook)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1594 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-10-30 21:39:19 +00:00
parent d5d11eac6c
commit c53be33474
7 changed files with 116 additions and 60 deletions
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25
target-arm/translate.c
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@ -43,6 +43,12 @@ typedef struct DisasContext {
#define DISAS_JUMP_NEXT 4
#ifdef USE_DIRECT_JUMP
#define TBPARAM(x)
#else
#define TBPARAM(x) (long)(x)
#endif
/* XXX: move that elsewhere */
static uint16_t *gen_opc_ptr;
static uint32_t *gen_opparam_ptr;
@ -897,6 +903,18 @@ static int disas_vfp_insn(CPUState * env, DisasContext *s, uint32_t insn)
return 0;
}
static inline void gen_jmp_tb(long tb, int n, uint32_t dest)
{
if (n == 0)
gen_op_goto_tb0(TBPARAM(tb));
else
gen_op_goto_tb1(TBPARAM(tb));
gen_op_movl_T0_im(dest);
gen_op_movl_r15_T0();
gen_op_movl_T0_im(tb + n);
gen_op_exit_tb();
}
static inline void gen_jmp (DisasContext *s, uint32_t dest)
{
if (__builtin_expect(s->singlestep_enabled, 0)) {
@ -906,7 +924,8 @@ static inline void gen_jmp (DisasContext *s, uint32_t dest)
gen_op_movl_T0_im(dest);
gen_bx(s);
} else {
gen_op_jmp0((long)s->tb, dest);
long tb = (long)s->tb;
gen_jmp_tb(tb, 0, dest);
s->is_jmp = DISAS_TB_JUMP;
}
}
@ -2118,7 +2137,7 @@ static inline int gen_intermediate_code_internal(CPUState *env,
} else {
switch(dc->is_jmp) {
case DISAS_NEXT:
gen_op_jmp1((long)dc->tb, (long)dc->pc);
gen_jmp_tb((long)dc->tb, 1, dc->pc);
break;
default:
case DISAS_JUMP:
@ -2133,7 +2152,7 @@ static inline int gen_intermediate_code_internal(CPUState *env,
}
if (dc->condjmp) {
gen_set_label(dc->condlabel);
gen_op_jmp1((long)dc->tb, (long)dc->pc);
gen_jmp_tb((long)dc->tb, 1, dc->pc);
dc->condjmp = 0;
}
}