[PULL 21/35] target/ppc: call plugin trap callbacks

["Alex Bennée" <alex.bennee@linaro.org>]

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 Power PC targets.

Signed-off-by: Julian Ganz <neither@nut.email>
Message-ID: <20251027110344.2289945-22-alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index d8bca19fff5..6d05b865058 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -27,6 +27,7 @@
 #include "internal.h"
 #include "helper_regs.h"
 #include "hw/ppc/ppc.h"
+#include "qemu/plugin.h"
 
 #include "trace.h"
 
@@ -404,11 +405,31 @@ static void powerpc_mcheck_checkstop(CPUPPCState *env)
     powerpc_checkstop(env, "machine check with MSR[ME]=0");
 }
 
+static void powerpc_do_plugin_vcpu_interrupt_cb(CPUState *cs, int excp,
+                                                uint64_t from)
+{
+    switch (excp) {
+    case POWERPC_EXCP_NONE:
+        break;
+    case POWERPC_EXCP_FIT:
+    case POWERPC_EXCP_WDT:
+    case POWERPC_EXCP_PIT:
+    case POWERPC_EXCP_SMI:
+    case POWERPC_EXCP_PERFM:
+    case POWERPC_EXCP_THERM:
+        qemu_plugin_vcpu_interrupt_cb(cs, from);
+        break;
+    default:
+        qemu_plugin_vcpu_exception_cb(cs, from);
+    }
+}
+
 static void powerpc_excp_40x(PowerPCCPU *cpu, int excp)
 {
     CPUPPCState *env = &cpu->env;
     target_ulong msr, new_msr, vector;
     int srr0 = SPR_SRR0, srr1 = SPR_SRR1;
+    uint64_t last_pc = env->nip;
 
     /* new srr1 value excluding must-be-zero bits */
     msr = env->msr & ~0x783f0000ULL;
@@ -456,6 +477,7 @@ static void powerpc_excp_40x(PowerPCCPU *cpu, int excp)
             if (!FIELD_EX64_FE(env->msr) || !FIELD_EX64(env->msr, MSR, FP)) {
                 trace_ppc_excp_fp_ignore();
                 powerpc_reset_excp_state(cpu);
+                qemu_plugin_vcpu_exception_cb(env_cpu(env), last_pc);
                 return;
             }
             env->spr[SPR_40x_ESR] = ESR_FP;
@@ -510,12 +532,14 @@ static void powerpc_excp_40x(PowerPCCPU *cpu, int excp)
     env->spr[srr0] = env->nip;
     env->spr[srr1] = msr;
     powerpc_set_excp_state(cpu, vector, new_msr);
+    powerpc_do_plugin_vcpu_interrupt_cb(env_cpu(env), excp, last_pc);
 }
 
 static void powerpc_excp_6xx(PowerPCCPU *cpu, int excp)
 {
     CPUPPCState *env = &cpu->env;
     target_ulong msr, new_msr, vector;
+    uint64_t last_pc = env->nip;
 
     /* new srr1 value excluding must-be-zero bits */
     msr = env->msr & ~0x783f0000ULL;
@@ -567,6 +591,7 @@ static void powerpc_excp_6xx(PowerPCCPU *cpu, int excp)
             if (!FIELD_EX64_FE(env->msr) || !FIELD_EX64(env->msr, MSR, FP)) {
                 trace_ppc_excp_fp_ignore();
                 powerpc_reset_excp_state(cpu);
+                qemu_plugin_vcpu_exception_cb(env_cpu(env), last_pc);
                 return;
             }
             /*
@@ -653,12 +678,14 @@ static void powerpc_excp_6xx(PowerPCCPU *cpu, int excp)
     env->spr[SPR_SRR0] = env->nip;
     env->spr[SPR_SRR1] = msr;
     powerpc_set_excp_state(cpu, vector, new_msr);
+    powerpc_do_plugin_vcpu_interrupt_cb(env_cpu(env), excp, last_pc);
 }
 
 static void powerpc_excp_7xx(PowerPCCPU *cpu, int excp)
 {
     CPUPPCState *env = &cpu->env;
     target_ulong msr, new_msr, vector;
+    uint64_t last_pc = env->nip;
 
     /* new srr1 value excluding must-be-zero bits */
     msr = env->msr & ~0x783f0000ULL;
@@ -708,6 +735,7 @@ static void powerpc_excp_7xx(PowerPCCPU *cpu, int excp)
             if (!FIELD_EX64_FE(env->msr) || !FIELD_EX64(env->msr, MSR, FP)) {
                 trace_ppc_excp_fp_ignore();
                 powerpc_reset_excp_state(cpu);
+                qemu_plugin_vcpu_exception_cb(env_cpu(env), last_pc);
                 return;
             }
             /*
@@ -758,6 +786,7 @@ static void powerpc_excp_7xx(PowerPCCPU *cpu, int excp)
         if (lev == 1 && cpu->vhyp) {
             cpu->vhyp_class->hypercall(cpu->vhyp, cpu);
             powerpc_reset_excp_state(cpu);
+            qemu_plugin_vcpu_hostcall_cb(env_cpu(env), last_pc);
             return;
         }
 
@@ -803,12 +832,14 @@ static void powerpc_excp_7xx(PowerPCCPU *cpu, int excp)
     env->spr[SPR_SRR0] = env->nip;
     env->spr[SPR_SRR1] = msr;
     powerpc_set_excp_state(cpu, vector, new_msr);
+    powerpc_do_plugin_vcpu_interrupt_cb(env_cpu(env), excp, last_pc);
 }
 
 static void powerpc_excp_74xx(PowerPCCPU *cpu, int excp)
 {
     CPUPPCState *env = &cpu->env;
     target_ulong msr, new_msr, vector;
+    uint64_t last_pc = env->nip;
 
     /* new srr1 value excluding must-be-zero bits */
     msr = env->msr & ~0x783f0000ULL;
@@ -858,6 +889,7 @@ static void powerpc_excp_74xx(PowerPCCPU *cpu, int excp)
             if (!FIELD_EX64_FE(env->msr) || !FIELD_EX64(env->msr, MSR, FP)) {
                 trace_ppc_excp_fp_ignore();
                 powerpc_reset_excp_state(cpu);
+                qemu_plugin_vcpu_exception_cb(env_cpu(env), last_pc);
                 return;
             }
             /*
@@ -908,6 +940,7 @@ static void powerpc_excp_74xx(PowerPCCPU *cpu, int excp)
         if (lev == 1 && cpu->vhyp) {
             cpu->vhyp_class->hypercall(cpu->vhyp, cpu);
             powerpc_reset_excp_state(cpu);
+            qemu_plugin_vcpu_hostcall_cb(env_cpu(env), last_pc);
             return;
         }
 
@@ -947,6 +980,7 @@ static void powerpc_excp_74xx(PowerPCCPU *cpu, int excp)
     env->spr[SPR_SRR0] = env->nip;
     env->spr[SPR_SRR1] = msr;
     powerpc_set_excp_state(cpu, vector, new_msr);
+    powerpc_do_plugin_vcpu_interrupt_cb(env_cpu(env), excp, last_pc);
 }
 
 static void powerpc_excp_ppe42(PowerPCCPU *cpu, int excp)
@@ -1073,6 +1107,7 @@ static void powerpc_excp_booke(PowerPCCPU *cpu, int excp)
     CPUPPCState *env = &cpu->env;
     target_ulong msr, new_msr, vector;
     int srr0 = SPR_SRR0, srr1 = SPR_SRR1;
+    uint64_t last_pc = env->nip;
 
     /*
      * Book E does not play games with certain bits of xSRR1 being MSR save
@@ -1144,6 +1179,7 @@ static void powerpc_excp_booke(PowerPCCPU *cpu, int excp)
             if (!FIELD_EX64_FE(env->msr) || !FIELD_EX64(env->msr, MSR, FP)) {
                 trace_ppc_excp_fp_ignore();
                 powerpc_reset_excp_state(cpu);
+                qemu_plugin_vcpu_exception_cb(env_cpu(env), last_pc);
                 return;
             }
             /*
@@ -1252,6 +1288,7 @@ static void powerpc_excp_booke(PowerPCCPU *cpu, int excp)
     env->spr[srr0] = env->nip;
     env->spr[srr1] = msr;
     powerpc_set_excp_state(cpu, vector, new_msr);
+    powerpc_do_plugin_vcpu_interrupt_cb(env_cpu(env), excp, last_pc);
 }
 
 /*
@@ -1373,6 +1410,7 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp)
     CPUPPCState *env = &cpu->env;
     target_ulong msr, new_msr, vector;
     int srr0 = SPR_SRR0, srr1 = SPR_SRR1, lev = -1;
+    uint64_t last_pc = env->nip;
 
     /* new srr1 value excluding must-be-zero bits */
     msr = env->msr & ~0x783f0000ULL;
@@ -1472,6 +1510,7 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp)
             if (!FIELD_EX64_FE(env->msr) || !FIELD_EX64(env->msr, MSR, FP)) {
                 trace_ppc_excp_fp_ignore();
                 powerpc_reset_excp_state(cpu);
+                qemu_plugin_vcpu_exception_cb(env_cpu(env), last_pc);
                 return;
             }
             /*
@@ -1516,6 +1555,7 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp)
         if (lev == 1 && books_vhyp_handles_hcall(cpu)) {
             cpu->vhyp_class->hypercall(cpu->vhyp, cpu);
             powerpc_reset_excp_state(cpu);
+            qemu_plugin_vcpu_hostcall_cb(env_cpu(env), last_pc);
             return;
         }
         if (env->insns_flags2 & PPC2_ISA310) {
@@ -1662,6 +1702,7 @@ static void powerpc_excp_books(PowerPCCPU *cpu, int excp)
         ppc_excp_apply_ail(cpu, excp, msr, &new_msr, &vector);
         powerpc_set_excp_state(cpu, vector, new_msr);
     }
+    powerpc_do_plugin_vcpu_interrupt_cb(env_cpu(env), excp, last_pc);
 }
 #else
 static inline void powerpc_excp_books(PowerPCCPU *cpu, int excp)
-- 
2.47.3