[PULL 39/60] target/sparc: Make sparc_cpu_tlb_fill sysemu only

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

The fallback code in cpu_loop_exit_sigsegv is sufficient
for sparc linux-user.

This makes all of the code in mmu_helper.c sysemu only, so remove
the ifdefs and move the file to sparc_softmmu_ss.  Remove the code
from cpu_loop that handled TT_DFAULT and TT_TFAULT.

Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/sparc/cpu_loop.c | 25 -------------------------
 target/sparc/cpu.c          |  2 +-
 target/sparc/mmu_helper.c   | 25 -------------------------
 target/sparc/meson.build    |  2 +-
 4 files changed, 2 insertions(+), 52 deletions(-)

diff --git a/linux-user/sparc/cpu_loop.c b/linux-user/sparc/cpu_loop.c
index ad29b4eb6a..0ba65e431c 100644
--- a/linux-user/sparc/cpu_loop.c
+++ b/linux-user/sparc/cpu_loop.c
@@ -219,17 +219,6 @@ void cpu_loop (CPUSPARCState *env)
         case TT_WIN_UNF: /* window underflow */
             restore_window(env);
             break;
-        case TT_TFAULT:
-        case TT_DFAULT:
-            {
-                info.si_signo = TARGET_SIGSEGV;
-                info.si_errno = 0;
-                /* XXX: check env->error_code */
-                info.si_code = TARGET_SEGV_MAPERR;
-                info._sifields._sigfault._addr = env->mmuregs[4];
-                queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-            }
-            break;
 #else
         case TT_SPILL: /* window overflow */
             save_window(env);
@@ -237,20 +226,6 @@ void cpu_loop (CPUSPARCState *env)
         case TT_FILL: /* window underflow */
             restore_window(env);
             break;
-        case TT_TFAULT:
-        case TT_DFAULT:
-            {
-                info.si_signo = TARGET_SIGSEGV;
-                info.si_errno = 0;
-                /* XXX: check env->error_code */
-                info.si_code = TARGET_SEGV_MAPERR;
-                if (trapnr == TT_DFAULT)
-                    info._sifields._sigfault._addr = env->dmmu.mmuregs[4];
-                else
-                    info._sifields._sigfault._addr = cpu_tsptr(env)->tpc;
-                queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-            }
-            break;
 #ifndef TARGET_ABI32
         case 0x16e:
             flush_windows(env);
diff --git a/target/sparc/cpu.c b/target/sparc/cpu.c
index 21dd27796d..55268ed2a1 100644
--- a/target/sparc/cpu.c
+++ b/target/sparc/cpu.c
@@ -865,9 +865,9 @@ static const struct SysemuCPUOps sparc_sysemu_ops = {
 static const struct TCGCPUOps sparc_tcg_ops = {
     .initialize = sparc_tcg_init,
     .synchronize_from_tb = sparc_cpu_synchronize_from_tb,
-    .tlb_fill = sparc_cpu_tlb_fill,
 
 #ifndef CONFIG_USER_ONLY
+    .tlb_fill = sparc_cpu_tlb_fill,
     .cpu_exec_interrupt = sparc_cpu_exec_interrupt,
     .do_interrupt = sparc_cpu_do_interrupt,
     .do_transaction_failed = sparc_cpu_do_transaction_failed,
diff --git a/target/sparc/mmu_helper.c b/target/sparc/mmu_helper.c
index a44473a1c7..2ad47391d0 100644
--- a/target/sparc/mmu_helper.c
+++ b/target/sparc/mmu_helper.c
@@ -25,30 +25,6 @@
 
 /* Sparc MMU emulation */
 
-#if defined(CONFIG_USER_ONLY)
-
-bool sparc_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
-                        MMUAccessType access_type, int mmu_idx,
-                        bool probe, uintptr_t retaddr)
-{
-    SPARCCPU *cpu = SPARC_CPU(cs);
-    CPUSPARCState *env = &cpu->env;
-
-    if (access_type == MMU_INST_FETCH) {
-        cs->exception_index = TT_TFAULT;
-    } else {
-        cs->exception_index = TT_DFAULT;
-#ifdef TARGET_SPARC64
-        env->dmmu.mmuregs[4] = address;
-#else
-        env->mmuregs[4] = address;
-#endif
-    }
-    cpu_loop_exit_restore(cs, retaddr);
-}
-
-#else
-
 #ifndef TARGET_SPARC64
 /*
  * Sparc V8 Reference MMU (SRMMU)
@@ -926,4 +902,3 @@ hwaddr sparc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
     }
     return phys_addr;
 }
-#endif
diff --git a/target/sparc/meson.build b/target/sparc/meson.build
index a3638b9503..a801802ee2 100644
--- a/target/sparc/meson.build
+++ b/target/sparc/meson.build
@@ -6,7 +6,6 @@ sparc_ss.add(files(
   'gdbstub.c',
   'helper.c',
   'ldst_helper.c',
-  'mmu_helper.c',
   'translate.c',
   'win_helper.c',
 ))
@@ -16,6 +15,7 @@ sparc_ss.add(when: 'TARGET_SPARC64', if_true: files('int64_helper.c', 'vis_helpe
 sparc_softmmu_ss = ss.source_set()
 sparc_softmmu_ss.add(files(
   'machine.c',
+  'mmu_helper.c',
   'monitor.c',
 ))
 
-- 
2.25.1