}
}
-/* convert 32-bit int to 64-bit float */
-void HELPER(cdfbr)(CPUS390XState *env, uint32_t f1, int32_t v2)
-{
- HELPER_LOG("%s: converting %d to f%d\n", __func__, v2, f1);
- env->fregs[f1].d = int32_to_float64(v2, &env->fpu_status);
-}
-
-/* convert 32-bit int to 128-bit float */
-void HELPER(cxfbr)(CPUS390XState *env, uint32_t f1, int32_t v2)
-{
- CPU_QuadU v1;
-
- v1.q = int32_to_float128(v2, &env->fpu_status);
- env->fregs[f1].ll = v1.ll.upper;
- env->fregs[f1 + 2].ll = v1.ll.lower;
-}
-
-/* convert 64-bit int to 32-bit float */
-void HELPER(cegbr)(CPUS390XState *env, uint32_t f1, int64_t v2)
-{
- HELPER_LOG("%s: converting %ld to f%d\n", __func__, v2, f1);
- env->fregs[f1].l.upper = int64_to_float32(v2, &env->fpu_status);
-}
-
-/* convert 64-bit int to 64-bit float */
-void HELPER(cdgbr)(CPUS390XState *env, uint32_t f1, int64_t v2)
-{
- HELPER_LOG("%s: converting %ld to f%d\n", __func__, v2, f1);
- env->fregs[f1].d = int64_to_float64(v2, &env->fpu_status);
-}
-
-/* convert 64-bit int to 128-bit float */
-void HELPER(cxgbr)(CPUS390XState *env, uint32_t f1, int64_t v2)
-{
- CPU_QuadU x1;
-
- x1.q = int64_to_float128(v2, &env->fpu_status);
- HELPER_LOG("%s: converted %ld to 0x%lx and 0x%lx\n", __func__, v2,
- x1.ll.upper, x1.ll.lower);
- env->fregs[f1].ll = x1.ll.upper;
- env->fregs[f1 + 2].ll = x1.ll.lower;
-}
-
-/* convert 32-bit int to 32-bit float */
-void HELPER(cefbr)(CPUS390XState *env, uint32_t f1, int32_t v2)
-{
- env->fregs[f1].l.upper = int32_to_float32(v2, &env->fpu_status);
- HELPER_LOG("%s: converting %d to 0x%d in f%d\n", __func__, v2,
- env->fregs[f1].l.upper, f1);
-}
-
/* 32-bit FP addition */
uint64_t HELPER(aeb)(CPUS390XState *env, uint64_t f1, uint64_t f2)
{
return float_comp_to_cc(env, cmp);
}
-static void set_round_mode(CPUS390XState *env, int m3)
+static int swap_round_mode(CPUS390XState *env, int m3)
{
+ int ret = env->fpu_status.float_rounding_mode;
switch (m3) {
case 0:
/* current mode */
set_float_rounding_mode(float_round_down, &env->fpu_status);
break;
}
+ return ret;
}
-/* convert 32-bit float to 64-bit int */
-uint32_t HELPER(cgebr)(CPUS390XState *env, uint32_t r1, uint32_t f2,
- uint32_t m3)
+/* convert 64-bit int to 32-bit float */
+uint64_t HELPER(cegb)(CPUS390XState *env, int64_t v2, uint32_t m3)
{
- float32 v2 = env->fregs[f2].l.upper;
+ int hold = swap_round_mode(env, m3);
+ float32 ret = int64_to_float32(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
+}
- set_round_mode(env, m3);
- env->regs[r1] = float32_to_int64(v2, &env->fpu_status);
- return set_cc_nz_f32(v2);
+/* convert 64-bit int to 64-bit float */
+uint64_t HELPER(cdgb)(CPUS390XState *env, int64_t v2, uint32_t m3)
+{
+ int hold = swap_round_mode(env, m3);
+ float64 ret = int64_to_float64(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
}
-/* convert 64-bit float to 64-bit int */
-uint32_t HELPER(cgdbr)(CPUS390XState *env, uint32_t r1, uint32_t f2,
- uint32_t m3)
+/* convert 64-bit int to 128-bit float */
+uint64_t HELPER(cxgb)(CPUS390XState *env, int64_t v2, uint32_t m3)
{
- float64 v2 = env->fregs[f2].d;
+ int hold = swap_round_mode(env, m3);
+ float128 ret = int64_to_float128(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return RET128(ret);
+}
- set_round_mode(env, m3);
- env->regs[r1] = float64_to_int64(v2, &env->fpu_status);
- return set_cc_nz_f64(v2);
+/* convert 64-bit uint to 32-bit float */
+uint64_t HELPER(celgb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
+{
+ int hold = swap_round_mode(env, m3);
+ float32 ret = uint64_to_float32(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
}
-/* convert 128-bit float to 64-bit int */
-uint32_t HELPER(cgxbr)(CPUS390XState *env, uint32_t r1, uint32_t f2,
- uint32_t m3)
+/* convert 64-bit uint to 64-bit float */
+uint64_t HELPER(cdlgb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
{
- CPU_QuadU v2;
+ int hold = swap_round_mode(env, m3);
+ float64 ret = uint64_to_float64(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
+}
- v2.ll.upper = env->fregs[f2].ll;
- v2.ll.lower = env->fregs[f2 + 2].ll;
- set_round_mode(env, m3);
- env->regs[r1] = float128_to_int64(v2.q, &env->fpu_status);
- if (float128_is_any_nan(v2.q)) {
- return 3;
- } else if (float128_is_zero(v2.q)) {
- return 0;
- } else if (float128_is_neg(v2.q)) {
- return 1;
- } else {
- return 2;
- }
+/* convert 64-bit uint to 128-bit float */
+uint64_t HELPER(cxlgb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
+{
+ int hold = swap_round_mode(env, m3);
+ float128 ret = uint64_to_float128(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return RET128(ret);
}
-/* convert 32-bit float to 32-bit int */
-uint32_t HELPER(cfebr)(CPUS390XState *env, uint32_t r1, uint32_t f2,
- uint32_t m3)
+/* convert 32-bit float to 64-bit int */
+uint64_t HELPER(cgeb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
{
- float32 v2 = env->fregs[f2].l.upper;
+ int hold = swap_round_mode(env, m3);
+ int64_t ret = float32_to_int64(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
+}
- set_round_mode(env, m3);
- env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) |
- float32_to_int32(v2, &env->fpu_status);
- return set_cc_nz_f32(v2);
+/* convert 64-bit float to 64-bit int */
+uint64_t HELPER(cgdb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
+{
+ int hold = swap_round_mode(env, m3);
+ int64_t ret = float64_to_int64(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
}
-/* convert 64-bit float to 32-bit int */
-uint32_t HELPER(cfdbr)(CPUS390XState *env, uint32_t r1, uint32_t f2,
- uint32_t m3)
+/* convert 128-bit float to 64-bit int */
+uint64_t HELPER(cgxb)(CPUS390XState *env, uint64_t h, uint64_t l, uint32_t m3)
{
- float64 v2 = env->fregs[f2].d;
+ int hold = swap_round_mode(env, m3);
+ float128 v2 = make_float128(h, l);
+ int64_t ret = float128_to_int64(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
+}
- set_round_mode(env, m3);
- env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) |
- float64_to_int32(v2, &env->fpu_status);
- return set_cc_nz_f64(v2);
+/* convert 32-bit float to 32-bit int */
+uint64_t HELPER(cfeb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
+{
+ int hold = swap_round_mode(env, m3);
+ int32_t ret = float32_to_int32(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
+}
+
+/* convert 64-bit float to 32-bit int */
+uint64_t HELPER(cfdb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
+{
+ int hold = swap_round_mode(env, m3);
+ int32_t ret = float64_to_int32(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
}
/* convert 128-bit float to 32-bit int */
-uint32_t HELPER(cfxbr)(CPUS390XState *env, uint32_t r1, uint32_t f2,
- uint32_t m3)
+uint64_t HELPER(cfxb)(CPUS390XState *env, uint64_t h, uint64_t l, uint32_t m3)
+{
+ int hold = swap_round_mode(env, m3);
+ float128 v2 = make_float128(h, l);
+ int32_t ret = float128_to_int32(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
+}
+
+/* convert 32-bit float to 64-bit uint */
+uint64_t HELPER(clgeb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
+{
+ int hold = swap_round_mode(env, m3);
+ uint64_t ret;
+ v2 = float32_to_float64(v2, &env->fpu_status);
+ ret = float64_to_uint64(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
+}
+
+/* convert 64-bit float to 64-bit uint */
+uint64_t HELPER(clgdb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
+{
+ int hold = swap_round_mode(env, m3);
+ uint64_t ret = float64_to_uint64(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
+}
+
+/* convert 128-bit float to 64-bit uint */
+uint64_t HELPER(clgxb)(CPUS390XState *env, uint64_t h, uint64_t l, uint32_t m3)
+{
+ int hold = swap_round_mode(env, m3);
+ float128 v2 = make_float128(h, l);
+ /* ??? Not 100% correct. */
+ uint64_t ret = float128_to_int64(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
+}
+
+/* convert 32-bit float to 32-bit uint */
+uint64_t HELPER(clfeb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
{
- CPU_QuadU v2;
+ int hold = swap_round_mode(env, m3);
+ uint32_t ret = float32_to_uint32(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
+}
+
+/* convert 64-bit float to 32-bit uint */
+uint64_t HELPER(clfdb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
+{
+ int hold = swap_round_mode(env, m3);
+ uint32_t ret = float64_to_uint32(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
+}
- v2.ll.upper = env->fregs[f2].ll;
- v2.ll.lower = env->fregs[f2 + 2].ll;
- env->regs[r1] = (env->regs[r1] & 0xffffffff00000000ULL) |
- float128_to_int32(v2.q, &env->fpu_status);
- return set_cc_nz_f128(v2.q);
+/* convert 128-bit float to 32-bit uint */
+uint64_t HELPER(clfxb)(CPUS390XState *env, uint64_t h, uint64_t l, uint32_t m3)
+{
+ int hold = swap_round_mode(env, m3);
+ float128 v2 = make_float128(h, l);
+ /* Not 100% correct. */
+ uint32_t ret = float128_to_int64(v2, &env->fpu_status);
+ set_float_rounding_mode(hold, &env->fpu_status);
+ handle_exceptions(env, GETPC());
+ return ret;
}
/* 32-bit FP multiply and add */
handle_exceptions(env, GETPC());
return RET128(ret);
}
+
+static const int fpc_to_rnd[4] = {
+ float_round_nearest_even,
+ float_round_to_zero,
+ float_round_up,
+ float_round_down
+};
+
+/* set fpc */
+void HELPER(sfpc)(CPUS390XState *env, uint64_t fpc)
+{
+ /* Install everything in the main FPC. */
+ env->fpc = fpc;
+
+ /* Install the rounding mode in the shadow fpu_status. */
+ set_float_rounding_mode(fpc_to_rnd[fpc & 3], &env->fpu_status);
+}
+
+/* set fpc and signal */
+void HELPER(sfas)(CPUS390XState *env, uint64_t val)
+{
+ uint32_t signalling = env->fpc;
+ uint32_t source = val;
+ uint32_t s390_exc;
+
+ /* The contents of the source operand are placed in the FPC register;
+ then the flags in the FPC register are set to the logical OR of the
+ signalling flags and the source flags. */
+ env->fpc = source | (signalling & 0x00ff0000);
+ set_float_rounding_mode(fpc_to_rnd[source & 3], &env->fpu_status);
+
+ /* If any signalling flag is 1 and the corresponding source mask
+ is also 1, a simulated-iee-exception trap occurs. */
+ s390_exc = (signalling >> 16) & (source >> 24);
+ if (s390_exc) {
+ ieee_exception(env, s390_exc | 3, GETPC());
+ }
+}
projects / qemu.git / blobdiff