Re: [PATCH 13/24] target/microblaze: Restrict cpu_exec_interrupt() handler to sysemu

[Warner Losh]

On Thu, Sep 2, 2021 at 9:18 AM Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:

Restrict cpu_exec_interrupt() and its callees to sysemu.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 target/microblaze/cpu.h    |  2 ++
 target/microblaze/cpu.c    |  2 +-
 target/microblaze/helper.c | 13 ++-----------
 3 files changed, 5 insertions(+), 12 deletions(-)

Reviewed-by: Warner Losh <imp@bsdimp.com>

 

diff --git a/target/microblaze/cpu.h b/target/microblaze/cpu.h
index e4bba8a7551..40401c33b72 100644
--- a/target/microblaze/cpu.h
+++ b/target/microblaze/cpu.h
@@ -355,8 +355,10 @@ struct MicroBlazeCPU {
 };


+#ifndef CONFIG_USER_ONLY
 void mb_cpu_do_interrupt(CPUState *cs);
 bool mb_cpu_exec_interrupt(CPUState *cs, int int_req);
+#endif /* !CONFIG_USER_ONLY */
 void mb_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr,
                                 MMUAccessType access_type,
                                 int mmu_idx, uintptr_t retaddr);
diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c
index 72d8f2a0daa..15db277925f 100644
--- a/target/microblaze/cpu.c
+++ b/target/microblaze/cpu.c
@@ -365,10 +365,10 @@ static const struct SysemuCPUOps mb_sysemu_ops = {
 static const struct TCGCPUOps mb_tcg_ops = {
     .initialize = mb_tcg_init,
     .synchronize_from_tb = mb_cpu_synchronize_from_tb,
-    .cpu_exec_interrupt = mb_cpu_exec_interrupt,
     .tlb_fill = mb_cpu_tlb_fill,

 #ifndef CONFIG_USER_ONLY
+    .cpu_exec_interrupt = mb_cpu_exec_interrupt,
     .do_interrupt = mb_cpu_do_interrupt,
     .do_transaction_failed = mb_cpu_transaction_failed,
     .do_unaligned_access = mb_cpu_do_unaligned_access,
diff --git a/target/microblaze/helper.c b/target/microblaze/helper.c
index 20dbd673136..dd2aecd1d58 100644
--- a/target/microblaze/helper.c
+++ b/target/microblaze/helper.c
@@ -26,16 +26,6 @@

 #if defined(CONFIG_USER_ONLY)

-void mb_cpu_do_interrupt(CPUState *cs)
-{
-    MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs);
-    CPUMBState *env = &cpu->env;
-
-    cs->exception_index = -1;
-    env->res_addr = RES_ADDR_NONE;
-    env->regs[14] = env->pc;
-}
-
 bool mb_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
                      MMUAccessType access_type, int mmu_idx,
                      bool probe, uintptr_t retaddr)
@@ -271,7 +261,6 @@ hwaddr mb_cpu_get_phys_page_attrs_debug(CPUState *cs, vaddr addr,

     return paddr;
 }
-#endif

 bool mb_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
 {
@@ -289,6 +278,8 @@ bool mb_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
     return false;
 }

+#endif /* !CONFIG_USER_ONLY */
+
 void mb_cpu_do_unaligned_access(CPUState *cs, vaddr addr,
                                 MMUAccessType access_type,
                                 int mmu_idx, uintptr_t retaddr)
--
2.31.1