From: Wentong Wu <wentong.wu@intel.com>
To: qemu-devel@nongnu.org, peter.maydell@linaro.org
Cc: qemu-trivial@nongnu.org, marex@denx.de, crwulff@gmail.com,
Wentong Wu <wentong.wu@intel.com>
Subject: [PATCH v2 2/4] target/nios2: in line the semantics of DISAS_UPDATE with other targets
Date: Fri, 10 Jul 2020 19:34:31 -0400 [thread overview]
Message-ID: <20200710233433.19729-2-wentong.wu@intel.com> (raw)
In-Reply-To: <20200710233433.19729-1-wentong.wu@intel.com>
In line the semantics of DISAS_UPDATE on nios2 target with other targets
which is to explicitly write the PC back into the cpu state before doing
a tcg_gen_exit_tb().
Signed-off-by: Wentong Wu <wentong.wu@intel.com>
---
target/nios2/translate.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/nios2/translate.c b/target/nios2/translate.c
index b052be85..83c10eb2 100644
--- a/target/nios2/translate.c
+++ b/target/nios2/translate.c
@@ -865,6 +865,7 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
/* Indicate where the next block should start */
switch (dc->is_jmp) {
case DISAS_NEXT:
+ case DISAS_UPDATE:
/* Save the current PC back into the CPU register */
tcg_gen_movi_tl(cpu_R[R_PC], dc->pc);
tcg_gen_exit_tb(NULL, 0);
@@ -872,7 +873,6 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns)
default:
case DISAS_JUMP:
- case DISAS_UPDATE:
/* The jump will already have updated the PC register */
tcg_gen_exit_tb(NULL, 0);
break;
--
2.21.3
next prev parent reply other threads:[~2020-07-10 15:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-10 23:34 [PATCH v2 1/4] target/nios2: add DISAS_NORETURN case for nothing more to generate Wentong Wu
2020-07-10 23:34 ` Wentong Wu [this message]
2020-07-10 23:34 ` [PATCH v2 3/4] target/nios2: Use gen_io_start around wrctl instruction Wentong Wu
2020-07-10 23:34 ` [PATCH v2 4/4] hw/nios2: exit to main CPU loop only when unmasking interrupts Wentong Wu
2020-07-11 18:49 ` [PATCH v2 1/4] target/nios2: add DISAS_NORETURN case for nothing more to generate Peter Maydell
2020-07-12 15:18 ` Wu, Wentong
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