@@ -714,6 +714,7 @@ trap_state* cpu_tsptr(CPUSPARCState* env);
void QEMU_NORETURN do_unaligned_access(CPUSPARCState *env, target_ulong addr,
int is_write, int is_user,
uintptr_t retaddr);
+void cpu_restore_state2(CPUSPARCState *env, uintptr_t retaddr);
#define TB_FLAG_FPU_ENABLED (1 << 4)
#define TB_FLAG_AM_ENABLED (1 << 5)
@@ -75,6 +75,7 @@ static target_ulong helper_udiv_common(CPUSPARCState *env, target_ulong a,
x1 = (b & 0xffffffff);
if (x1 == 0) {
+ cpu_restore_state2(env, GETPC());
helper_raise_exception(env, TT_DIV_ZERO);
}
@@ -113,6 +114,7 @@ static target_ulong helper_sdiv_common(CPUSPARCState *env, target_ulong a,
x1 = (b & 0xffffffff);
if (x1 == 0) {
+ cpu_restore_state2(env, GETPC());
helper_raise_exception(env, TT_DIV_ZERO);
}
@@ -139,3 +141,29 @@ target_ulong helper_sdiv_cc(CPUSPARCState *env, target_ulong a, target_ulong b)
{
return helper_sdiv_common(env, a, b, 1);
}
+
+#ifdef TARGET_SPARC64
+int64_t helper_sdivx(CPUSPARCState *env, int64_t a, int64_t b)
+{
+ if (b == 0) {
+ /* Raise divide by zero trap. */
+ cpu_restore_state2(env, GETPC());
+ helper_raise_exception(env, TT_DIV_ZERO);
+ } else if (b == -1) {
+ /* Avoid overflow trap with i386 divide insn. */
+ return -a;
+ } else {
+ return a / b;
+ }
+}
+
+uint64_t helper_udivx(CPUSPARCState *env, uint64_t a, uint64_t b)
+{
+ if (b == 0) {
+ /* Raise divide by zero trap. */
+ cpu_restore_state2(env, GETPC());
+ helper_raise_exception(env, TT_DIV_ZERO);
+ }
+ return a / b;
+}
+#endif
@@ -38,6 +38,10 @@ DEF_HELPER_3(udiv, tl, env, tl, tl)
DEF_HELPER_3(udiv_cc, tl, env, tl, tl)
DEF_HELPER_3(sdiv, tl, env, tl, tl)
DEF_HELPER_3(sdiv_cc, tl, env, tl, tl)
+#ifdef TARGET_SPARC64
+DEF_HELPER_3(sdivx, s64, env, s64, s64)
+DEF_HELPER_3(udivx, i64, env, i64, i64)
+#endif
DEF_HELPER_3(ldqf, void, env, tl, int)
DEF_HELPER_3(stqf, void, env, tl, int)
#if !defined(CONFIG_USER_ONLY) || defined(TARGET_SPARC64)
@@ -2390,9 +2390,8 @@ void cpu_unassigned_access(CPUSPARCState *env, target_phys_addr_t addr,
#endif
#endif
-#if !defined(CONFIG_USER_ONLY)
/* XXX: make it generic ? */
-static void cpu_restore_state2(CPUSPARCState *env, uintptr_t retaddr)
+void cpu_restore_state2(CPUSPARCState *env, uintptr_t retaddr)
{
TranslationBlock *tb;
@@ -2407,6 +2406,7 @@ static void cpu_restore_state2(CPUSPARCState *env, uintptr_t retaddr)
}
}
+#if !defined(CONFIG_USER_ONLY)
void do_unaligned_access(CPUSPARCState *env, target_ulong addr, int is_write,
int is_user, uintptr_t retaddr)
{
@@ -768,44 +768,6 @@ static inline void gen_op_smul(TCGv dst, TCGv src1, TCGv src2)
gen_op_multiply(dst, src1, src2, 1);
}
-#ifdef TARGET_SPARC64
-static inline void gen_trap_ifdivzero_tl(TCGv divisor)
-{
- TCGv_i32 r_const;
- int l1;
-
- l1 = gen_new_label();
- tcg_gen_brcondi_tl(TCG_COND_NE, divisor, 0, l1);
- r_const = tcg_const_i32(TT_DIV_ZERO);
- gen_helper_raise_exception(cpu_env, r_const);
- tcg_temp_free_i32(r_const);
- gen_set_label(l1);
-}
-
-static inline void gen_op_sdivx(TCGv dst, TCGv src1, TCGv src2)
-{
- int l1, l2;
- TCGv r_temp1, r_temp2;
-
- l1 = gen_new_label();
- l2 = gen_new_label();
- r_temp1 = tcg_temp_local_new();
- r_temp2 = tcg_temp_local_new();
- tcg_gen_mov_tl(r_temp1, src1);
- tcg_gen_mov_tl(r_temp2, src2);
- gen_trap_ifdivzero_tl(r_temp2);
- tcg_gen_brcondi_tl(TCG_COND_NE, r_temp1, INT64_MIN, l1);
- tcg_gen_brcondi_tl(TCG_COND_NE, r_temp2, -1, l1);
- tcg_gen_movi_i64(dst, INT64_MIN);
- tcg_gen_br(l2);
- gen_set_label(l1);
- tcg_gen_div_i64(dst, r_temp1, r_temp2);
- gen_set_label(l2);
- tcg_temp_free(r_temp1);
- tcg_temp_free(r_temp2);
-}
-#endif
-
// 1
static inline void gen_op_eval_ba(TCGv dst)
{
@@ -3591,17 +3553,7 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
break;
#ifdef TARGET_SPARC64
case 0xd: /* V9 udivx */
- {
- TCGv r_temp1, r_temp2;
- r_temp1 = tcg_temp_local_new();
- r_temp2 = tcg_temp_local_new();
- tcg_gen_mov_tl(r_temp1, cpu_src1);
- tcg_gen_mov_tl(r_temp2, cpu_src2);
- gen_trap_ifdivzero_tl(r_temp2);
- tcg_gen_divu_i64(cpu_dst, r_temp1, r_temp2);
- tcg_temp_free(r_temp1);
- tcg_temp_free(r_temp2);
- }
+ gen_helper_udivx(cpu_dst, cpu_env, cpu_src1, cpu_src2);
break;
#endif
case 0xe: /* udiv */
@@ -4102,7 +4054,7 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
break;
}
case 0x2d: /* V9 sdivx */
- gen_op_sdivx(cpu_dst, cpu_src1, cpu_src2);
+ gen_helper_sdivx(cpu_dst, cpu_env, cpu_src1, cpu_src2);
gen_movl_TN_reg(rd, cpu_dst);
break;
case 0x2e: /* V9 popc */
The branches around the exception are maintaining an otherwise unnecessary use of local temps for the cpu destination. Signed-off-by: Richard Henderson <rth@twiddle.net> --- target-sparc/cpu.h | 1 + target-sparc/helper.c | 28 +++++++++++++++++++++++++ target-sparc/helper.h | 4 ++++ target-sparc/ldst_helper.c | 4 ++-- target-sparc/translate.c | 52 ++-------------------------------------------- 5 files changed, 37 insertions(+), 52 deletions(-)