target-sparc: Add npc state to insn_start

Reviewed-by: NAurelien Jarno <aurelien@aurel32.net>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NRichard Henderson <rth@twiddle.net>

target-sparc/cpu.h

@@ -230,6 +230,7 @@ typedef struct trap_state {
     uint32_t tt;
 } trap_state;
 #endif
+#define TARGET_INSN_START_EXTRA_WORDS 1
 
 typedef struct sparc_def_t {
     const char *name;

target-sparc/translate.c

@@ -5257,7 +5257,12 @@ static inline void gen_intermediate_code_internal(SPARCCPU *cpu,
                 tcg_ctx.gen_opc_icount[lj] = num_insns;
             }
         }
-        tcg_gen_insn_start(dc->pc);
+        if (dc->npc & JUMP_PC) {
+            assert(dc->jump_pc[1] == dc->pc + 4);
+            tcg_gen_insn_start(dc->pc, dc->jump_pc[0] | JUMP_PC);
+        } else {
+            tcg_gen_insn_start(dc->pc, dc->npc);
+        }
         num_insns++;
 
         if (unlikely(cpu_breakpoint_test(cs, dc->pc, BP_ANY))) {