Re: [PATCH v8 10/25] target/loongarch: call plugin trap callbacks

[gaosong]

在 2025/10/19 下午11:14, Julian Ganz 写道:

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.hender...@linaro.org>
Signed-off-by: Julian Ganz <neither@nut.email>
---
  target/loongarch/tcg/tcg_cpu.c | 4 ++++
  1 file changed, 4 insertions(+)

Reviewed-by: Song Gao <gaos...@loongson.cn>

Thanks.
Song Gao

diff --git a/target/loongarch/tcg/tcg_cpu.c b/target/loongarch/tcg/tcg_cpu.c
index 82b54e6dc3..9d077c56d9 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;
  }