[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PULL 26/26] target/alpha: Use goto_tb for fallthru between
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PULL 26/26] target/alpha: Use goto_tb for fallthru between TBs |
Date: |
Mon, 5 Jun 2017 09:52:33 -0700 |
Signed-off-by: Richard Henderson <address@hidden>
---
target/alpha/translate.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/target/alpha/translate.c b/target/alpha/translate.c
index 4523c4c..7c45ae3 100644
--- a/target/alpha/translate.c
+++ b/target/alpha/translate.c
@@ -89,6 +89,9 @@ typedef enum {
updated the PC for the next instruction to be executed. */
EXIT_PC_STALE,
+ /* We are exiting the TB due to page crossing or space constraints. */
+ EXIT_FALLTHRU,
+
/* We are ending the TB with a noreturn function call, e.g. longjmp.
No following code will be executed. */
EXIT_NORETURN,
@@ -2984,7 +2987,7 @@ void gen_intermediate_code(CPUAlphaState *env, struct
TranslationBlock *tb)
|| num_insns >= max_insns
|| singlestep
|| ctx.singlestep_enabled)) {
- ret = EXIT_PC_STALE;
+ ret = EXIT_FALLTHRU;
}
} while (ret == NO_EXIT);
@@ -2996,6 +2999,13 @@ void gen_intermediate_code(CPUAlphaState *env, struct
TranslationBlock *tb)
case EXIT_GOTO_TB:
case EXIT_NORETURN:
break;
+ case EXIT_FALLTHRU:
+ if (use_goto_tb(&ctx, ctx.pc)) {
+ tcg_gen_goto_tb(0);
+ tcg_gen_movi_i64(cpu_pc, ctx.pc);
+ tcg_gen_exit_tb((uintptr_t)ctx.tb);
+ }
+ /* FALLTHRU */
case EXIT_PC_STALE:
tcg_gen_movi_i64(cpu_pc, ctx.pc);
/* FALLTHRU */
@@ -3007,7 +3017,7 @@ void gen_intermediate_code(CPUAlphaState *env, struct
TranslationBlock *tb)
}
break;
default:
- abort();
+ g_assert_not_reached();
}
gen_tb_end(tb, num_insns);
--
2.9.4
[Qemu-devel] [PULL 25/26] target/alpha: Implement WTINT inline, Richard Henderson, 2017/06/05
[Qemu-devel] [PULL 26/26] target/alpha: Use goto_tb for fallthru between TBs,
Richard Henderson <=
Re: [Qemu-devel] [PULL 00/26] tcg queued patches, Peter Maydell, 2017/06/06