#include "qemu/osdep.h"
#include "cpu.h"
#include "internal.h"
+#include "tcg_s390x.h"
#include "exec/exec-all.h"
#include "exec/helper-proto.h"
#include "qemu/host-utils.h"
return !!dst;
}
+static uint32_t cc_calc_addu(uint64_t carry_out, uint64_t result)
+{
+ g_assert(carry_out <= 1);
+ return (result != 0) + 2 * carry_out;
+}
+
+static uint32_t cc_calc_subu(uint64_t borrow_out, uint64_t result)
+{
+ return cc_calc_addu(borrow_out + 1, result);
+}
+
static uint32_t cc_calc_add_64(int64_t a1, int64_t a2, int64_t ar)
{
if ((a1 > 0 && a2 > 0 && ar < 0) || (a1 < 0 && a2 < 0 && ar > 0)) {
}
}
-static uint32_t cc_calc_addu_64(uint64_t a1, uint64_t a2, uint64_t ar)
-{
- return (ar != 0) + 2 * (ar < a1);
-}
-
-static uint32_t cc_calc_addc_64(uint64_t a1, uint64_t a2, uint64_t ar)
-{
- /* Recover a2 + carry_in. */
- uint64_t a2c = ar - a1;
- /* Check for a2+carry_in overflow, then a1+a2c overflow. */
- int carry_out = (a2c < a2) || (ar < a1);
-
- return (ar != 0) + 2 * carry_out;
-}
-
static uint32_t cc_calc_sub_64(int64_t a1, int64_t a2, int64_t ar)
{
if ((a1 > 0 && a2 < 0 && ar < 0) || (a1 < 0 && a2 > 0 && ar > 0)) {
}
}
-static uint32_t cc_calc_subu_64(uint64_t a1, uint64_t a2, uint64_t ar)
-{
- if (ar == 0) {
- return 2;
- } else {
- if (a2 > a1) {
- return 1;
- } else {
- return 3;
- }
- }
-}
-
-static uint32_t cc_calc_subb_64(uint64_t a1, uint64_t a2, uint64_t ar)
-{
- int borrow_out;
-
- if (ar != a1 - a2) { /* difference means borrow-in */
- borrow_out = (a2 >= a1);
- } else {
- borrow_out = (a2 > a1);
- }
-
- return (ar != 0) + 2 * !borrow_out;
-}
-
static uint32_t cc_calc_abs_64(int64_t dst)
{
if ((uint64_t)dst == 0x8000000000000000ULL) {
}
}
-static uint32_t cc_calc_addu_32(uint32_t a1, uint32_t a2, uint32_t ar)
-{
- return (ar != 0) + 2 * (ar < a1);
-}
-
-static uint32_t cc_calc_addc_32(uint32_t a1, uint32_t a2, uint32_t ar)
-{
- /* Recover a2 + carry_in. */
- uint32_t a2c = ar - a1;
- /* Check for a2+carry_in overflow, then a1+a2c overflow. */
- int carry_out = (a2c < a2) || (ar < a1);
-
- return (ar != 0) + 2 * carry_out;
-}
-
static uint32_t cc_calc_sub_32(int32_t a1, int32_t a2, int32_t ar)
{
if ((a1 > 0 && a2 < 0 && ar < 0) || (a1 < 0 && a2 > 0 && ar > 0)) {
}
}
-static uint32_t cc_calc_subu_32(uint32_t a1, uint32_t a2, uint32_t ar)
-{
- if (ar == 0) {
- return 2;
- } else {
- if (a2 > a1) {
- return 1;
- } else {
- return 3;
- }
- }
-}
-
-static uint32_t cc_calc_subb_32(uint32_t a1, uint32_t a2, uint32_t ar)
-{
- int borrow_out;
-
- if (ar != a1 - a2) { /* difference means borrow-in */
- borrow_out = (a2 >= a1);
- } else {
- borrow_out = (a2 > a1);
- }
-
- return (ar != 0) + 2 * !borrow_out;
-}
-
static uint32_t cc_calc_abs_32(int32_t dst)
{
if ((uint32_t)dst == 0x80000000UL) {
return dst == 16 ? 0 : 3;
}
+static uint32_t cc_calc_vc(uint64_t low, uint64_t high)
+{
+ if (high == -1ull && low == -1ull) {
+ /* all elements match */
+ return 0;
+ } else if (high == 0 && low == 0) {
+ /* no elements match */
+ return 3;
+ } else {
+ /* some elements but not all match */
+ return 1;
+ }
+}
+
+static uint32_t cc_calc_muls_32(int64_t res)
+{
+ const int64_t tmp = res >> 31;
+
+ if (!res) {
+ return 0;
+ } else if (tmp && tmp != -1) {
+ return 3;
+ } else if (res < 0) {
+ return 1;
+ }
+ return 2;
+}
+
+static uint64_t cc_calc_muls_64(int64_t res_high, uint64_t res_low)
+{
+ if (!res_high && !res_low) {
+ return 0;
+ } else if (res_high + (res_low >> 63) != 0) {
+ return 3;
+ } else if (res_high < 0) {
+ return 1;
+ }
+ return 2;
+}
+
static uint32_t do_calc_cc(CPUS390XState *env, uint32_t cc_op,
uint64_t src, uint64_t dst, uint64_t vr)
{
- S390CPU *cpu = s390_env_get_cpu(env);
uint32_t r = 0;
switch (cc_op) {
case CC_OP_NZ:
r = cc_calc_nz(dst);
break;
- case CC_OP_ADD_64:
- r = cc_calc_add_64(src, dst, vr);
+ case CC_OP_ADDU:
+ r = cc_calc_addu(src, dst);
break;
- case CC_OP_ADDU_64:
- r = cc_calc_addu_64(src, dst, vr);
+ case CC_OP_SUBU:
+ r = cc_calc_subu(src, dst);
break;
- case CC_OP_ADDC_64:
- r = cc_calc_addc_64(src, dst, vr);
+ case CC_OP_ADD_64:
+ r = cc_calc_add_64(src, dst, vr);
break;
case CC_OP_SUB_64:
r = cc_calc_sub_64(src, dst, vr);
break;
- case CC_OP_SUBU_64:
- r = cc_calc_subu_64(src, dst, vr);
- break;
- case CC_OP_SUBB_64:
- r = cc_calc_subb_64(src, dst, vr);
- break;
case CC_OP_ABS_64:
r = cc_calc_abs_64(dst);
break;
case CC_OP_COMP_64:
r = cc_calc_comp_64(dst);
break;
+ case CC_OP_MULS_64:
+ r = cc_calc_muls_64(src, dst);
+ break;
case CC_OP_ADD_32:
r = cc_calc_add_32(src, dst, vr);
break;
- case CC_OP_ADDU_32:
- r = cc_calc_addu_32(src, dst, vr);
- break;
- case CC_OP_ADDC_32:
- r = cc_calc_addc_32(src, dst, vr);
- break;
case CC_OP_SUB_32:
r = cc_calc_sub_32(src, dst, vr);
break;
- case CC_OP_SUBU_32:
- r = cc_calc_subu_32(src, dst, vr);
- break;
- case CC_OP_SUBB_32:
- r = cc_calc_subb_32(src, dst, vr);
- break;
case CC_OP_ABS_32:
r = cc_calc_abs_32(dst);
break;
case CC_OP_COMP_32:
r = cc_calc_comp_32(dst);
break;
+ case CC_OP_MULS_32:
+ r = cc_calc_muls_32(dst);
+ break;
case CC_OP_ICM:
r = cc_calc_icm(src, dst);
case CC_OP_LCBB:
r = cc_calc_lcbb(dst);
break;
+ case CC_OP_VC:
+ r = cc_calc_vc(src, dst);
+ break;
case CC_OP_NZ_F32:
r = set_cc_nz_f32(dst);
break;
default:
- cpu_abort(CPU(cpu), "Unknown CC operation: %s\n", cc_name(cc_op));
+ cpu_abort(env_cpu(env), "Unknown CC operation: %s\n", cc_name(cc_op));
}
HELPER_LOG("%s: %15s 0x%016lx 0x%016lx 0x%016lx = %d\n", __func__,
void HELPER(load_psw)(CPUS390XState *env, uint64_t mask, uint64_t addr)
{
load_psw(env, mask, addr);
- cpu_loop_exit(CPU(s390_env_get_cpu(env)));
+ cpu_loop_exit(env_cpu(env));
}
void HELPER(sacf)(CPUS390XState *env, uint64_t a1)
break;
default:
HELPER_LOG("unknown sacf mode: %" PRIx64 "\n", a1);
- s390_program_interrupt(env, PGM_SPECIFICATION, 2, GETPC());
- break;
+ tcg_s390_program_interrupt(env, PGM_SPECIFICATION, GETPC());
}
}
#endif
projects / qemu.git / blobdiff