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[PATCH for-6.1 v4 06/15] accel/tcg: Handle -singlestep in curr_cflags
From: |
Richard Henderson |
Subject: |
[PATCH for-6.1 v4 06/15] accel/tcg: Handle -singlestep in curr_cflags |
Date: |
Mon, 19 Jul 2021 11:22:30 -1000 |
Exchange the test in translator_use_goto_tb for CF_NO_GOTO_TB,
and the test in tb_gen_code for setting CF_COUNT_MASK to 1.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210717221851.2124573-6-richard.henderson@linaro.org>
---
accel/tcg/cpu-exec.c | 8 +++++++-
accel/tcg/translate-all.c | 2 +-
accel/tcg/translator.c | 2 +-
3 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index 70ea3c7d68..2206c463f5 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -149,7 +149,13 @@ uint32_t curr_cflags(CPUState *cpu)
{
uint32_t cflags = cpu->tcg_cflags;
- if (qemu_loglevel_mask(CPU_LOG_TB_NOCHAIN)) {
+ /*
+ * For singlestep and -d nochain, suppress goto_tb so that
+ * we can log -d cpu,exec after every TB.
+ */
+ if (singlestep) {
+ cflags |= CF_NO_GOTO_TB | 1;
+ } else if (qemu_loglevel_mask(CPU_LOG_TB_NOCHAIN)) {
cflags |= CF_NO_GOTO_TB;
}
diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c
index 5cc01d693b..bf82c15aab 100644
--- a/accel/tcg/translate-all.c
+++ b/accel/tcg/translate-all.c
@@ -1432,7 +1432,7 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
}
QEMU_BUILD_BUG_ON(CF_COUNT_MASK + 1 != TCG_MAX_INSNS);
- if (cpu->singlestep_enabled || singlestep) {
+ if (cpu->singlestep_enabled) {
max_insns = 1;
}
diff --git a/accel/tcg/translator.c b/accel/tcg/translator.c
index 2ea5a74f30..a59eb7c11b 100644
--- a/accel/tcg/translator.c
+++ b/accel/tcg/translator.c
@@ -39,7 +39,7 @@ bool translator_use_goto_tb(DisasContextBase *db,
target_ulong dest)
}
/* Suppress goto_tb in the case of single-steping. */
- if (db->singlestep_enabled || singlestep) {
+ if (db->singlestep_enabled) {
return false;
}
--
2.25.1
- [PATCH for-6.1 v4 00/15] tcg: breakpoint reorg, Richard Henderson, 2021/07/19
- [PATCH for-6.1 v4 01/15] accel/tcg: Reduce CF_COUNT_MASK to match TCG_MAX_INSNS, Richard Henderson, 2021/07/19
- [PATCH for-6.1 v4 02/15] accel/tcg: Move curr_cflags into cpu-exec.c, Richard Henderson, 2021/07/19
- [PATCH for-6.1 v4 03/15] target/alpha: Drop goto_tb path in gen_call_pal, Richard Henderson, 2021/07/19
- [PATCH for-6.1 v4 06/15] accel/tcg: Handle -singlestep in curr_cflags,
Richard Henderson <=
- [PATCH for-6.1 v4 04/15] accel/tcg: Add CF_NO_GOTO_TB and CF_NO_GOTO_PTR, Richard Henderson, 2021/07/19
- [PATCH for-6.1 v4 05/15] accel/tcg: Drop CF_NO_GOTO_PTR from -d nochain, Richard Henderson, 2021/07/19
- [PATCH for-6.1 v4 07/15] accel/tcg: Use CF_NO_GOTO_{TB, PTR} in cpu_exec_step_atomic, Richard Henderson, 2021/07/19
- [PATCH for-6.1 v4 08/15] accel/tcg: Move cflags lookup into tb_find, Richard Henderson, 2021/07/19
- [PATCH for-6.1 v4 09/15] hw/core: Introduce TCGCPUOps.debug_check_breakpoint, Richard Henderson, 2021/07/19
- [PATCH for-6.1 v4 10/15] target/arm: Implement debug_check_breakpoint, Richard Henderson, 2021/07/19
- [PATCH for-6.1 v4 11/15] target/i386: Implement debug_check_breakpoint, Richard Henderson, 2021/07/19
- [PATCH for-6.1 v4 12/15] accel/tcg: Move breakpoint recognition outside translation, Richard Henderson, 2021/07/19
- [PATCH for-6.1 v4 14/15] accel/tcg: Hoist tb_cflags to a local in translator_loop, Richard Henderson, 2021/07/19
- [PATCH for-6.1 v4 15/15] accel/tcg: Record singlestep_enabled in tb->cflags, Richard Henderson, 2021/07/19