[PATCH v4 13/23] target/mips: call plugin trap callbacks

[Julian Ganz]

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 MIPS targets. We consider the exceptions
NMI and EXT_INTERRUPT to be asynchronous interrupts rather than
exceptions.

Signed-off-by: Julian Ganz <neither@nut.email>
---
 target/mips/tcg/system/tlb_helper.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/target/mips/tcg/system/tlb_helper.c 
b/target/mips/tcg/system/tlb_helper.c
index eccaf3624c..abc4d9fef0 100644
--- a/target/mips/tcg/system/tlb_helper.c
+++ b/target/mips/tcg/system/tlb_helper.c
@@ -18,6 +18,7 @@
  */
 #include "qemu/osdep.h"
 #include "qemu/bitops.h"
+#include "qemu/plugin.h"
 
 #include "cpu.h"
 #include "internal.h"
@@ -1034,6 +1035,7 @@ void mips_cpu_do_interrupt(CPUState *cs)
     bool update_badinstr = 0;
     target_ulong offset;
     int cause = -1;
+    uint64_t last_pc = env->active_tc.PC;
 
     if (qemu_loglevel_mask(CPU_LOG_INT)
         && cs->exception_index != EXCP_EXT_INTERRUPT) {
@@ -1052,6 +1054,7 @@ void mips_cpu_do_interrupt(CPUState *cs)
         cs->exception_index = EXCP_NONE;
         mips_semihosting(env);
         env->active_tc.PC += env->error_code;
+        qemu_plugin_vcpu_hostcall_cb(cs, last_pc);
         return;
     case EXCP_DSS:
         env->CP0_Debug |= 1 << CP0DB_DSS;
@@ -1336,6 +1339,14 @@ void mips_cpu_do_interrupt(CPUState *cs)
                  env->CP0_Status, env->CP0_Cause, env->CP0_BadVAddr,
                  env->CP0_DEPC);
     }
+    switch (cs->exception_index) {
+    case EXCP_NMI:
+    case EXCP_EXT_INTERRUPT:
+        qemu_plugin_vcpu_interrupt_cb(cs, last_pc);
+        break;
+    default:
+        qemu_plugin_vcpu_exception_cb(cs, last_pc);
+    }
     cs->exception_index = EXCP_NONE;
 }
 
-- 
2.49.0