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[Qemu-devel] [PATCH v12 10/27] target/i386: [tcg] Port to tb_stop
From: |
Lluís Vilanova |
Subject: |
[Qemu-devel] [PATCH v12 10/27] target/i386: [tcg] Port to tb_stop |
Date: |
Fri, 7 Jul 2017 14:21:17 +0200 |
User-agent: |
StGit/0.17.1-dirty |
Incrementally paves the way towards using the generic instruction translation
loop.
Signed-off-by: Lluís Vilanova <address@hidden>
Reviewed-by: Emilio G. Cota <address@hidden>
Reviewed-by: Richard Henderson <address@hidden>
---
target/i386/translate.c | 26 ++++++++++++++------------
1 file changed, 14 insertions(+), 12 deletions(-)
diff --git a/target/i386/translate.c b/target/i386/translate.c
index 18447b88b2..586f5740ec 100644
--- a/target/i386/translate.c
+++ b/target/i386/translate.c
@@ -8492,8 +8492,6 @@ static target_ulong
i386_tr_translate_insn(DisasContextBase *dcbase,
/* if irq were inhibited with HF_INHIBIT_IRQ_MASK, we clear
the flag and abort the translation to give the irqs a
chance to happen */
- gen_jmp_im(pc_next - dc->cs_base);
- gen_eob(dc);
dc->base.is_jmp = DISAS_TOO_MANY;
} else if ((dc->base.tb->cflags & CF_USE_ICOUNT)
&& ((dc->base.pc_next & TARGET_PAGE_MASK)
@@ -8506,18 +8504,24 @@ static target_ulong
i386_tr_translate_insn(DisasContextBase *dcbase,
If current instruction already crossed the bound - it's ok,
because an exception hasn't stopped this code.
*/
- gen_jmp_im(pc_next - dc->cs_base);
- gen_eob(dc);
dc->base.is_jmp = DISAS_TOO_MANY;
} else if ((pc_next - dc->base.pc_first) >= (TARGET_PAGE_SIZE - 32)) {
- gen_jmp_im(pc_next - dc->cs_base);
- gen_eob(dc);
dc->base.is_jmp = DISAS_TOO_MANY;
}
return pc_next;
}
+static void i386_tr_tb_stop(DisasContextBase *dcbase, CPUState *cpu)
+{
+ DisasContext *dc = container_of(dcbase, DisasContext, base);
+
+ if (dc->base.is_jmp == DISAS_TOO_MANY) {
+ gen_jmp_im(dc->base.pc_next - dc->cs_base);
+ gen_eob(dc);
+ }
+}
+
/* generate intermediate code for basic block 'tb'. */
void gen_intermediate_code(CPUState *cs, TranslationBlock *tb)
{
@@ -8588,23 +8592,21 @@ void gen_intermediate_code(CPUState *cs,
TranslationBlock *tb)
/* if single step mode, we generate only one instruction and
generate an exception */
if (dc->base.singlestep_enabled) {
- gen_jmp_im(dc->base.pc_next - dc->cs_base);
- gen_eob(dc);
+ dc->base.is_jmp = DISAS_TOO_MANY;
break;
}
/* if too long translation, stop generation too */
if (tcg_op_buf_full() ||
num_insns >= max_insns) {
- gen_jmp_im(dc->base.pc_next - dc->cs_base);
- gen_eob(dc);
+ dc->base.is_jmp = DISAS_TOO_MANY;
break;
}
if (singlestep) {
- gen_jmp_im(dc->base.pc_next - dc->cs_base);
- gen_eob(dc);
+ dc->base.is_jmp = DISAS_TOO_MANY;
break;
}
}
+ i386_tr_tb_stop(&dc->base, cs);
if (tb->cflags & CF_LAST_IO)
gen_io_end();
done_generating:
- Re: [Qemu-devel] [PATCH v12 04/27] target: [tcg] Add generic translation framework, (continued)
[Qemu-devel] [PATCH v12 05/27] target/i386: [tcg] Port to DisasContextBase, Lluís Vilanova, 2017/07/07
[Qemu-devel] [PATCH v12 06/27] target/i386: [tcg] Port to init_disas_context, Lluís Vilanova, 2017/07/07
[Qemu-devel] [PATCH v12 07/27] target/i386: [tcg] Port to insn_start, Lluís Vilanova, 2017/07/07
[Qemu-devel] [PATCH v12 08/27] target/i386: [tcg] Port to breakpoint_check, Lluís Vilanova, 2017/07/07
[Qemu-devel] [PATCH v12 09/27] target/i386: [tcg] Port to translate_insn, Lluís Vilanova, 2017/07/07
[Qemu-devel] [PATCH v12 10/27] target/i386: [tcg] Port to tb_stop,
Lluís Vilanova <=
[Qemu-devel] [PATCH v12 11/27] target/i386: [tcg] Port to disas_log, Lluís Vilanova, 2017/07/07
[Qemu-devel] [PATCH v12 12/27] target/i386: [tcg] Port to generic translation framework, Lluís Vilanova, 2017/07/07
[Qemu-devel] [PATCH v12 13/27] target/arm: [tcg] Port to DisasContextBase, Lluís Vilanova, 2017/07/07
[Qemu-devel] [PATCH v12 14/27] target/arm: [tcg] Port to init_disas_context, Lluís Vilanova, 2017/07/07
[Qemu-devel] [PATCH v12 15/27] target/arm: [tcg, a64] Port to init_disas_context, Lluís Vilanova, 2017/07/07
[Qemu-devel] [PATCH v12 16/27] target/arm: [tcg] Port to tb_start, Lluís Vilanova, 2017/07/07