[PULL 25/44] target/ppc: Restrict cpu_exec_interrupt() handler to sysemu

[Richard Henderson <richard.henderson@linaro.org>]

From: Philippe Mathieu-Daudé <f4bug@amsat.org>

Restrict cpu_exec_interrupt() and its callees to sysemu.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20210911165434.531552-18-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/ppc/cpu.h         |  4 ++--
 target/ppc/cpu_init.c    |  2 +-
 target/ppc/excp_helper.c | 21 +++------------------
 3 files changed, 6 insertions(+), 21 deletions(-)

diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h
index 500205229c..362e7c4c5c 100644
--- a/target/ppc/cpu.h
+++ b/target/ppc/cpu.h
@@ -1254,8 +1254,6 @@ DECLARE_OBJ_CHECKERS(PPCVirtualHypervisor, PPCVirtualHypervisorClass,
                      PPC_VIRTUAL_HYPERVISOR, TYPE_PPC_VIRTUAL_HYPERVISOR)
 #endif /* CONFIG_USER_ONLY */
 
-void ppc_cpu_do_interrupt(CPUState *cpu);
-bool ppc_cpu_exec_interrupt(CPUState *cpu, int int_req);
 void ppc_cpu_dump_state(CPUState *cpu, FILE *f, int flags);
 hwaddr ppc_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
 int ppc_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg);
@@ -1271,6 +1269,8 @@ int ppc64_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
 int ppc32_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
                                int cpuid, void *opaque);
 #ifndef CONFIG_USER_ONLY
+void ppc_cpu_do_interrupt(CPUState *cpu);
+bool ppc_cpu_exec_interrupt(CPUState *cpu, int int_req);
 void ppc_cpu_do_system_reset(CPUState *cs);
 void ppc_cpu_do_fwnmi_machine_check(CPUState *cs, target_ulong vector);
 extern const VMStateDescription vmstate_ppc_cpu;
diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c
index ad7abc6041..6aad01d1d3 100644
--- a/target/ppc/cpu_init.c
+++ b/target/ppc/cpu_init.c
@@ -9014,10 +9014,10 @@ static const struct SysemuCPUOps ppc_sysemu_ops = {
 
 static const struct TCGCPUOps ppc_tcg_ops = {
   .initialize = ppc_translate_init,
-  .cpu_exec_interrupt = ppc_cpu_exec_interrupt,
   .tlb_fill = ppc_cpu_tlb_fill,
 
 #ifndef CONFIG_USER_ONLY
+  .cpu_exec_interrupt = ppc_cpu_exec_interrupt,
   .do_interrupt = ppc_cpu_do_interrupt,
   .cpu_exec_enter = ppc_cpu_exec_enter,
   .cpu_exec_exit = ppc_cpu_exec_exit,
diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index 7b6ac16eef..d7e32ee107 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -40,24 +40,8 @@
 
 /*****************************************************************************/
 /* Exception processing */
-#if defined(CONFIG_USER_ONLY)
-void ppc_cpu_do_interrupt(CPUState *cs)
-{
-    PowerPCCPU *cpu = POWERPC_CPU(cs);
-    CPUPPCState *env = &cpu->env;
+#if !defined(CONFIG_USER_ONLY)
 
-    cs->exception_index = POWERPC_EXCP_NONE;
-    env->error_code = 0;
-}
-
-static void ppc_hw_interrupt(CPUPPCState *env)
-{
-    CPUState *cs = env_cpu(env);
-
-    cs->exception_index = POWERPC_EXCP_NONE;
-    env->error_code = 0;
-}
-#else /* defined(CONFIG_USER_ONLY) */
 static inline void dump_syscall(CPUPPCState *env)
 {
     qemu_log_mask(CPU_LOG_INT, "syscall r0=%016" PRIx64
@@ -1113,7 +1097,6 @@ void ppc_cpu_do_fwnmi_machine_check(CPUState *cs, target_ulong vector)
 
     powerpc_set_excp_state(cpu, vector, msr);
 }
-#endif /* !CONFIG_USER_ONLY */
 
 bool ppc_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
 {
@@ -1130,6 +1113,8 @@ bool ppc_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
     return false;
 }
 
+#endif /* !CONFIG_USER_ONLY */
+
 #if defined(DEBUG_OP)
 static void cpu_dump_rfi(target_ulong RA, target_ulong msr)
 {
-- 
2.25.1