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[PULL 16/35] target/loongarch: call plugin trap callbacks

Alex Bennée posted 35 patches 2 weeks, 2 days ago

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Maintainers: "Alex Bennée" <alex.bennee@linaro.org>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Thomas Huth <thuth@redhat.com>, Alexandre Iooss <erdnaxe@crans.org>, Mahmoud Mandour <ma.mandourr@gmail.com>, Pierrick Bouvier <pierrick.bouvier@linaro.org>, Richard Henderson <richard.henderson@linaro.org>, Peter Maydell <peter.maydell@linaro.org>, Michael Rolnik <mrolnik@gmail.com>, Helge Deller <deller@gmx.de>, Paolo Bonzini <pbonzini@redhat.com>, Eduardo Habkost <eduardo@habkost.net>, Song Gao <gaosong@loongson.cn>, Laurent Vivier <laurent@vivier.eu>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Aurelien Jarno <aurelien@aurel32.net>, Jiaxun Yang <jiaxun.yang@flygoat.com>, Aleksandar Rikalo <arikalo@gmail.com>, Stafford Horne <shorne@gmail.com>, Nicholas Piggin <npiggin@gmail.com>, Chinmay Rath <rathc@linux.ibm.com>, Palmer Dabbelt <palmer@dabbelt.com>, Alistair Francis <alistair.francis@wdc.com>, Weiwei Li <liwei1518@gmail.com>, Daniel Henrique Barboza <dbarboza@ventanamicro.com>, Liu Zhiwei <zhiwei_liu@linux.alibaba.com>, Yoshinori Sato <yoshinori.sato@nifty.com>, David Hildenbrand <david@redhat.com>, Ilya Leoshkevich <iii@linux.ibm.com>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, Artyom Tarasenko <atar4qemu@gmail.com>, Bastian Koppelmann <kbastian@mail.uni-paderborn.de>, Max Filippov <jcmvbkbc@gmail.com>

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[PULL 16/35] target/loongarch: call plugin trap callbacks

Posted by Alex Bennée 2 weeks, 2 days ago

From: Julian Ganz <neither@nut.email>

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 loongarch targets. This architecture
has one special "exception" for interrupts and no host calls.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Julian Ganz <neither@nut.email>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-ID: <20251027110344.2289945-17-alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

diff --git a/target/loongarch/tcg/tcg_cpu.c b/target/loongarch/tcg/tcg_cpu.c
index 82b54e6dc3c..9d077c56d9d 100644
--- a/target/loongarch/tcg/tcg_cpu.c
+++ b/target/loongarch/tcg/tcg_cpu.c
@@ -8,6 +8,7 @@
 #include "qemu/accel.h"
 #include "qemu/error-report.h"
 #include "qemu/log.h"
+#include "qemu/plugin.h"
 #include "accel/accel-cpu-target.h"
 #include "accel/tcg/cpu-ldst.h"
 #include "accel/tcg/cpu-ops.h"
@@ -80,6 +81,7 @@ static void loongarch_cpu_do_interrupt(CPUState *cs)
     int cause = -1;
     bool tlbfill = FIELD_EX64(env->CSR_TLBRERA, CSR_TLBRERA, ISTLBR);
     uint32_t vec_size = FIELD_EX64(env->CSR_ECFG, CSR_ECFG, VS);
+    uint64_t last_pc = env->pc;
 
     if (cs->exception_index != EXCCODE_INT) {
         qemu_log_mask(CPU_LOG_INT,
@@ -190,6 +192,7 @@ static void loongarch_cpu_do_interrupt(CPUState *cs)
                       __func__, env->pc, env->CSR_ERA,
                       cause, env->CSR_BADV, env->CSR_DERA, vector,
                       env->CSR_ECFG, env->CSR_ESTAT);
+        qemu_plugin_vcpu_interrupt_cb(cs, last_pc);
     } else {
         if (tlbfill) {
             set_pc(env, env->CSR_TLBRENTRY);
@@ -208,6 +211,7 @@ static void loongarch_cpu_do_interrupt(CPUState *cs)
                       tlbfill ? env->CSR_TLBRBADV : env->CSR_BADV,
                       env->CSR_BADI, env->gpr[11], cs->cpu_index,
                       env->CSR_ASID);
+        qemu_plugin_vcpu_exception_cb(cs, last_pc);
     }
     cs->exception_index = -1;
 }
-- 
2.47.3