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use direct jump only for jumps in the same page - stop translation after mtsr[in]

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1628 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-11-20 10:31:08 +00:00
parent 0b7a4a9711
commit c1942362bc
1 changed files with 25 additions and 14 deletions
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39
target-ppc/translate.c
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@ -1727,16 +1727,25 @@ GEN_HANDLER(stfiwx, 0x1F, 0x17, 0x1E, 0x00000001, PPC_FLOAT)
/*** Branch ***/
static inline void gen_jmp_tb(long tb, int n, uint32_t dest)
static inline void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest)
{
if (n == 0)
gen_op_goto_tb0(TBPARAM(tb));
else
gen_op_goto_tb1(TBPARAM(tb));
gen_op_set_T1(dest);
gen_op_b_T1();
gen_op_set_T0(tb + n);
gen_op_exit_tb();
TranslationBlock *tb;
tb = ctx->tb;
if ((tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK)) {
if (n == 0)
gen_op_goto_tb0(TBPARAM(tb));
else
gen_op_goto_tb1(TBPARAM(tb));
gen_op_set_T1(dest);
gen_op_b_T1();
gen_op_set_T0((long)tb + n);
gen_op_exit_tb();
} else {
gen_op_set_T1(dest);
gen_op_b_T1();
gen_op_set_T0(0);
gen_op_exit_tb();
}
}
/* b ba bl bla */
@ -1754,7 +1763,7 @@ GEN_HANDLER(b, 0x12, 0xFF, 0xFF, 0x00000000, PPC_FLOW)
if (LK(ctx->opcode)) {
gen_op_setlr(ctx->nip);
}
gen_jmp_tb((long)ctx->tb, 0, target);
gen_goto_tb(ctx, 0, target);
ctx->exception = EXCP_BRANCH;
}
@ -1805,7 +1814,7 @@ static inline void gen_bcond(DisasContext *ctx, int type)
case 4:
case 6:
if (type == BCOND_IM) {
gen_jmp_tb((long)ctx->tb, 0, target);
gen_goto_tb(ctx, 0, target);
} else {
gen_op_b_T1();
}
@ -1847,9 +1856,9 @@ static inline void gen_bcond(DisasContext *ctx, int type)
if (type == BCOND_IM) {
int l1 = gen_new_label();
gen_op_jz_T0(l1);
gen_jmp_tb((long)ctx->tb, 0, target);
gen_goto_tb(ctx, 0, target);
gen_set_label(l1);
gen_jmp_tb((long)ctx->tb, 1, ctx->nip);
gen_goto_tb(ctx, 1, ctx->nip);
} else {
gen_op_btest_T1(ctx->nip);
}
@ -2269,6 +2278,7 @@ GEN_HANDLER(mtsr, 0x1F, 0x12, 0x06, 0x0010F801, PPC_SEGMENT)
}
gen_op_load_gpr_T0(rS(ctx->opcode));
gen_op_store_sr(SR(ctx->opcode));
RET_MTMSR(ctx);
#endif
}
@ -2285,6 +2295,7 @@ GEN_HANDLER(mtsrin, 0x1F, 0x12, 0x07, 0x001F0001, PPC_SEGMENT)
gen_op_load_gpr_T0(rS(ctx->opcode));
gen_op_load_gpr_T1(rB(ctx->opcode));
gen_op_store_srin();
RET_MTMSR(ctx);
#endif
}
@ -2598,7 +2609,7 @@ int gen_intermediate_code_internal (CPUState *env, TranslationBlock *tb,
#endif
}
if (ctx.exception == EXCP_NONE) {
gen_jmp_tb((long)ctx.tb, 0, ctx.nip);
gen_goto_tb(&ctx, 0, ctx.nip);
} else if (ctx.exception != EXCP_BRANCH) {
gen_op_set_T0(0);
}