From: Keith Packard via <qemu-devel@nongnu.org>
To: qemu-devel@nongnu.org
Subject: Re: [PATCH 5/5] target/rx: Remove TCG_CALL_NO_WG from helpers which write env
Date: Sat, 15 Feb 2025 01:21:06 -0800 [thread overview]
Message-ID: <87jz9r1s3h.fsf@keithp.com> (raw)
In-Reply-To: <20250215021654.1786679-6-keithp@keithp.com>
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> Functions which modify virtual machine state (such as virtual
> registers stored in memory) must not be marked TCG_CALL_NO_WG as that
> tells the optimizer that virtual registers values already loaded in
> machine registers are still valid, hence discards any changes which
> these helpers may have made.
I still don't understand the restrictions on using these flags. I just
had to disable this flag for other helpers which only set conditions
codes in PSW and FPSW. Is that expected? When are these flags supposed
to be valid?
--
-keith
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next prev parent reply other threads:[~2025-02-15 9:21 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-15 2:16 [PATCH 0/5] Renesas RX target fixes Keith Packard via
2025-02-15 2:16 ` [PATCH 1/5] hw/rx: Allow execution without either bios or kernel Keith Packard via
2025-02-15 18:12 ` Richard Henderson
2025-02-15 2:16 ` [PATCH 2/5] target/rx: Set exception vector base to 0xffffff80 Keith Packard via
2025-02-15 18:12 ` Richard Henderson
2025-02-15 2:16 ` [PATCH 3/5] target/rx: Reset the CPU at qemu reset time Keith Packard via
2025-02-17 7:41 ` Philippe Mathieu-Daudé
2025-02-17 9:53 ` Peter Maydell
2025-02-18 20:09 ` Keith Packard via
2025-02-15 2:16 ` [PATCH 4/5] target/rx: Load reset vector from memory after first run Keith Packard via
2025-02-15 18:24 ` Richard Henderson
2025-02-17 9:49 ` Peter Maydell
2025-02-18 20:22 ` Keith Packard via
2025-02-18 20:11 ` Keith Packard via
2025-02-18 20:18 ` Keith Packard via
2025-02-15 2:16 ` [PATCH 5/5] target/rx: Remove TCG_CALL_NO_WG from helpers which write env Keith Packard via
2025-02-15 9:21 ` Keith Packard via [this message]
2025-02-15 17:09 ` Richard Henderson
2025-02-15 18:42 ` Richard Henderson
2025-02-18 21:20 ` [PATCH 0/4] Renesas RX target fixes (v2) Keith Packard via
2025-02-18 21:21 ` [PATCH 1/4] target/rx: Set exception vector base to 0xffffff80 Keith Packard via
2025-03-07 11:26 ` Peter Maydell
2025-02-18 21:21 ` [PATCH 2/4] target/rx: Remove TCG_CALL_NO_WG from helpers which write env Keith Packard via
2025-03-07 11:22 ` Peter Maydell
2025-02-18 21:21 ` [PATCH 3/4] hw/rx: Reset the CPU at qemu reset time Keith Packard via
2025-03-07 13:26 ` Peter Maydell
2025-06-01 1:13 ` Keith Packard via
2025-02-18 21:21 ` [PATCH 4/4] rx: Support loading of ELF files too Keith Packard via
2025-03-07 13:38 ` Peter Maydell
2025-06-01 0:35 ` Keith Packard via
2025-03-07 13:51 ` [PATCH 0/4] Renesas RX target fixes (v2) Peter Maydell
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