[PULL 23/48] target/ppc: Replace POWERPC_EXCP_SYNC with DISAS_EXIT

[David Gibson <david@gibson.dropbear.id.au>]

From: Richard Henderson <richard.henderson@linaro.org>

Remove the synthetic "exception" after no more uses.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20210512185441.3619828-9-matheus.ferst@eldorado.org.br>
Reviewed-by: Bruno Larsen (billionai) <bruno.larsen@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 target/ppc/cpu.h       |  1 -
 target/ppc/translate.c | 27 +++++++++------------------
 2 files changed, 9 insertions(+), 19 deletions(-)

diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h
index f43ceec5cb..99ee1e09b2 100644
--- a/target/ppc/cpu.h
+++ b/target/ppc/cpu.h
@@ -135,7 +135,6 @@ enum {
     POWERPC_EXCP_STOP         = 0x200, /* stop translation                   */
     POWERPC_EXCP_BRANCH       = 0x201, /* branch instruction                 */
     /* QEMU exceptions: special cases we want to stop translation            */
-    POWERPC_EXCP_SYNC         = 0x202, /* context synchronizing instruction  */
     POWERPC_EXCP_SYSCALL_USER = 0x203, /* System call in user mode only      */
 };
 
diff --git a/target/ppc/translate.c b/target/ppc/translate.c
index c879b47dc6..047d872c6b 100644
--- a/target/ppc/translate.c
+++ b/target/ppc/translate.c
@@ -362,14 +362,6 @@ static inline void gen_stop_exception(DisasContext *ctx)
     ctx->exception = POWERPC_EXCP_STOP;
 }
 
-#ifndef CONFIG_USER_ONLY
-/* No need to update nip here, as execution flow will change */
-static inline void gen_sync_exception(DisasContext *ctx)
-{
-    ctx->exception = POWERPC_EXCP_SYNC;
-}
-#endif
-
 /*****************************************************************************/
 /* SPR READ/WRITE CALLBACKS */
 
@@ -5032,7 +5024,7 @@ static void gen_rfi(DisasContext *ctx)
     }
     gen_update_cfar(ctx, ctx->cia);
     gen_helper_rfi(cpu_env);
-    gen_sync_exception(ctx);
+    ctx->base.is_jmp = DISAS_EXIT;
 #endif
 }
 
@@ -5049,7 +5041,7 @@ static void gen_rfid(DisasContext *ctx)
     }
     gen_update_cfar(ctx, ctx->cia);
     gen_helper_rfid(cpu_env);
-    gen_sync_exception(ctx);
+    ctx->base.is_jmp = DISAS_EXIT;
 #endif
 }
 
@@ -5066,7 +5058,7 @@ static void gen_rfscv(DisasContext *ctx)
     }
     gen_update_cfar(ctx, ctx->cia);
     gen_helper_rfscv(cpu_env);
-    gen_sync_exception(ctx);
+    ctx->base.is_jmp = DISAS_EXIT;
 #endif
 }
 #endif
@@ -5079,7 +5071,7 @@ static void gen_hrfid(DisasContext *ctx)
     /* Restore CPU state */
     CHK_HV;
     gen_helper_hrfid(cpu_env);
-    gen_sync_exception(ctx);
+    ctx->base.is_jmp = DISAS_EXIT;
 #endif
 }
 #endif
@@ -6920,7 +6912,7 @@ static void gen_rfsvc(DisasContext *ctx)
     CHK_SV;
 
     gen_helper_rfsvc(cpu_env);
-    gen_sync_exception(ctx);
+    ctx->base.is_jmp = DISAS_EXIT;
 #endif /* defined(CONFIG_USER_ONLY) */
 }
 
@@ -7300,7 +7292,7 @@ static void gen_rfci_40x(DisasContext *ctx)
     CHK_SV;
     /* Restore CPU state */
     gen_helper_40x_rfci(cpu_env);
-    gen_sync_exception(ctx);
+    ctx->base.is_jmp = DISAS_EXIT;
 #endif /* defined(CONFIG_USER_ONLY) */
 }
 
@@ -7312,7 +7304,7 @@ static void gen_rfci(DisasContext *ctx)
     CHK_SV;
     /* Restore CPU state */
     gen_helper_rfci(cpu_env);
-    gen_sync_exception(ctx);
+    ctx->base.is_jmp = DISAS_EXIT;
 #endif /* defined(CONFIG_USER_ONLY) */
 }
 
@@ -7327,7 +7319,7 @@ static void gen_rfdi(DisasContext *ctx)
     CHK_SV;
     /* Restore CPU state */
     gen_helper_rfdi(cpu_env);
-    gen_sync_exception(ctx);
+    ctx->base.is_jmp = DISAS_EXIT;
 #endif /* defined(CONFIG_USER_ONLY) */
 }
 
@@ -7340,7 +7332,7 @@ static void gen_rfmci(DisasContext *ctx)
     CHK_SV;
     /* Restore CPU state */
     gen_helper_rfmci(cpu_env);
-    gen_sync_exception(ctx);
+    ctx->base.is_jmp = DISAS_EXIT;
 #endif /* defined(CONFIG_USER_ONLY) */
 }
 
@@ -9238,7 +9230,6 @@ static void ppc_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs)
         case POWERPC_EXCP_BRANCH:
             ctx->base.is_jmp = DISAS_NORETURN;
             break;
-        case POWERPC_EXCP_SYNC:
         case POWERPC_EXCP_STOP:
             ctx->base.is_jmp = DISAS_EXIT;
             break;
-- 
2.31.1