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Sat, 19 Oct 2024 18:39:59 +0200 (CEST) Received: (qmail 9771 invoked by uid 990); 19 Oct 2024 16:39:58 -0000 Received: from unknown (HELO unkown) (::1) by skiff.uberspace.de (Haraka/3.0.1) with ESMTPSA; Sat, 19 Oct 2024 18:39:58 +0200 Authentication-Results: skiff.uberspace.de; auth=pass (plain) From: Julian Ganz To: qemu-devel@nongnu.org Cc: Julian Ganz , Peter Maydell , qemu-arm@nongnu.org (open list:ARM TCG CPUs) Subject: [RFC PATCH v2 4/7] target/arm: call plugin trap callbacks Date: Sat, 19 Oct 2024 18:39:37 +0200 Message-ID: X-Mailer: git-send-email 2.45.2 In-Reply-To: References: <20231021122502.26746-1-neither@nut.email> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Rspamd-Bar: ----- X-Rspamd-Report: REPLY(-4) BAYES_HAM(-2.83479) MID_CONTAINS_FROM(1) MIME_GOOD(-0.1) R_MISSING_CHARSET(0.5) X-Rspamd-Score: -5.43479 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=nut.email; s=uberspace; h=from:to:cc:subject:date; bh=QW5b+c8GerXmJWDNBXe+kTqzYLQkqZ+V6ikpQTJsG78=; 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charset="utf-8" We recently introduced API for registering callbacks for trap related events as well as the corresponding hook functions. Due to differences between architectures, the latter need to be called from target specific code. This change places hooks for ARM (and Aarch64) targets. We decided to treat the (V)IRQ, (VI/VF)NMI, (V)FIQ and VSERR exceptions as interrupts since they are, presumably, async in nature. Signed-off-by: Julian Ganz --- target/arm/helper.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/target/arm/helper.c b/target/arm/helper.c index 0a731a38e8..f636e216c8 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -31,6 +31,7 @@ #endif #include "cpregs.h" #include "target/arm/gtimer.h" +#include "qemu/plugin.h" =20 #define ARM_CPU_FREQ 1000000000 /* FIXME: 1 GHz, should be configurable */ =20 @@ -11147,6 +11148,24 @@ static void take_aarch32_exception(CPUARMState *en= v, int new_mode, } } =20 +static void arm_do_plugin_vcpu_interrupt_cb(CPUState *cs) +{ + switch (cs->exception_index) { + case EXCP_IRQ: + case EXCP_VIRQ: + case EXCP_NMI: + case EXCP_VINMI: + case EXCP_FIQ: + case EXCP_VFIQ: + case EXCP_VFNMI: + case EXCP_VSERR: + qemu_plugin_vcpu_interrupt_cb(cs); + break; + default: + qemu_plugin_vcpu_exception_cb(cs); + } +} + static void arm_cpu_do_interrupt_aarch32_hyp(CPUState *cs) { /* @@ -11819,6 +11838,7 @@ void arm_cpu_do_interrupt(CPUState *cs) if (tcg_enabled() && arm_is_psci_call(cpu, cs->exception_index)) { arm_handle_psci_call(cpu); qemu_log_mask(CPU_LOG_INT, "...handled as PSCI call\n"); + arm_do_plugin_vcpu_interrupt_cb(cs); return; } =20 @@ -11830,6 +11850,7 @@ void arm_cpu_do_interrupt(CPUState *cs) #ifdef CONFIG_TCG if (cs->exception_index =3D=3D EXCP_SEMIHOST) { tcg_handle_semihosting(cs); + qemu_plugin_vcpu_semihosting_cb(cs); return; } #endif @@ -11855,6 +11876,8 @@ void arm_cpu_do_interrupt(CPUState *cs) if (!kvm_enabled()) { cs->interrupt_request |=3D CPU_INTERRUPT_EXITTB; } + + arm_do_plugin_vcpu_interrupt_cb(cs); } #endif /* !CONFIG_USER_ONLY */ =20 --=20 2.45.2