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op_helper.c
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/*
* Copyright (c) 2012-2014 Bastian Koppelmann C-Lab/University Paderborn
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "cpu.h"
#include "qemu/host-utils.h"
#include "exec/helper-proto.h"
#include "exec/cpu_ldst.h"
#include <zlib.h> /* for crc32 */
/* Exception helpers */
static void QEMU_NORETURN
raise_exception_sync_internal(CPUTriCoreState *env, uint32_t class, int tin,
uintptr_t pc, uint32_t fcd_pc)
{
CPUState *cs = CPU(tricore_env_get_cpu(env));
/* in case we come from a helper-call we need to restore the PC */
if (pc) {
cpu_restore_state(cs, pc);
}
/* Tin is loaded into d[15] */
env->gpr_d[15] = tin;
if (class == TRAPC_CTX_MNG && tin == TIN3_FCU) {
/* upper context cannot be saved, if the context list is empty */
} else {
helper_svucx(env);
}
/* The return address in a[11] is updated */
if (class == TRAPC_CTX_MNG && tin == TIN3_FCD) {
env->SYSCON |= MASK_SYSCON_FCD_SF;
/* when we run out of CSAs after saving a context a FCD trap is taken
and the return address is the start of the trap handler which used
the last CSA */
env->gpr_a[11] = fcd_pc;
} else if (class == TRAPC_SYSCALL) {
env->gpr_a[11] = env->PC + 4;
} else {
env->gpr_a[11] = env->PC;
}
/* The stack pointer in A[10] is set to the Interrupt Stack Pointer (ISP)
when the processor was not previously using the interrupt stack
(in case of PSW.IS = 0). The stack pointer bit is set for using the
interrupt stack: PSW.IS = 1. */
if ((env->PSW & MASK_PSW_IS) == 0) {
env->gpr_a[10] = env->ISP;
}
env->PSW |= MASK_PSW_IS;
/* The I/O mode is set to Supervisor mode, which means all permissions
are enabled: PSW.IO = 10 B .*/
env->PSW |= (2 << 10);
/*The current Protection Register Set is set to 0: PSW.PRS = 00 B .*/
env->PSW &= ~MASK_PSW_PRS;
/* The Call Depth Counter (CDC) is cleared, and the call depth limit is
set for 64: PSW.CDC = 0000000 B .*/
env->PSW &= ~MASK_PSW_CDC;
/* Call Depth Counter is enabled, PSW.CDE = 1. */
env->PSW |= MASK_PSW_CDE;
/* Write permission to global registers A[0], A[1], A[8], A[9] is
disabled: PSW.GW = 0. */
env->PSW &= ~MASK_PSW_GW;
/*The interrupt system is globally disabled: ICR.IE = 0. The ‘old’
ICR.IE and ICR.CCPN are saved */
/* PCXI.PIE = ICR.IE */
env->PCXI = ((env->PCXI & ~MASK_PCXI_PIE) +
((env->ICR & MASK_ICR_IE) << 15));
/* PCXI.PCPN = ICR.CCPN */
env->PCXI = (env->PCXI & 0xffffff) +
((env->ICR & MASK_ICR_CCPN) << 24);
/* Update PC using the trap vector table */
env->PC = env->BTV | (class << 5);
cpu_loop_exit(cs);
}
void helper_raise_exception_sync(CPUTriCoreState *env, uint32_t class,
uint32_t tin)
{
raise_exception_sync_internal(env, class, tin, 0, 0);
}
static void raise_exception_sync_helper(CPUTriCoreState *env, uint32_t class,
uint32_t tin, uintptr_t pc)
{
raise_exception_sync_internal(env, class, tin, pc, 0);
}
/* Addressing mode helper */
static uint16_t reverse16(uint16_t val)
{
uint8_t high = (uint8_t)(val >> 8);
uint8_t low = (uint8_t)(val & 0xff);
uint16_t rh, rl;
rl = (uint16_t)((high * 0x0202020202ULL & 0x010884422010ULL) % 1023);
rh = (uint16_t)((low * 0x0202020202ULL & 0x010884422010ULL) % 1023);
return (rh << 8) | rl;
}
uint32_t helper_br_update(uint32_t reg)
{
uint32_t index = reg & 0xffff;
uint32_t incr = reg >> 16;
uint32_t new_index = reverse16(reverse16(index) + reverse16(incr));
return reg - index + new_index;
}
uint32_t helper_circ_update(uint32_t reg, uint32_t off)
{
uint32_t index = reg & 0xffff;
uint32_t length = reg >> 16;
int32_t new_index = index + off;
if (new_index < 0) {
new_index += length;
} else {
new_index %= length;
}
return reg - index + new_index;
}
static uint32_t ssov32(CPUTriCoreState *env, int64_t arg)
{
uint32_t ret;
int64_t max_pos = INT32_MAX;
int64_t max_neg = INT32_MIN;
if (arg > max_pos) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
ret = (target_ulong)max_pos;
} else {
if (arg < max_neg) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
ret = (target_ulong)max_neg;
} else {
env->PSW_USB_V = 0;
ret = (target_ulong)arg;
}
}
env->PSW_USB_AV = arg ^ arg * 2u;
env->PSW_USB_SAV |= env->PSW_USB_AV;
return ret;
}
static uint32_t suov32_pos(CPUTriCoreState *env, uint64_t arg)
{
uint32_t ret;
uint64_t max_pos = UINT32_MAX;
if (arg > max_pos) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
ret = (target_ulong)max_pos;
} else {
env->PSW_USB_V = 0;
ret = (target_ulong)arg;
}
env->PSW_USB_AV = arg ^ arg * 2u;
env->PSW_USB_SAV |= env->PSW_USB_AV;
return ret;
}
static uint32_t suov32_neg(CPUTriCoreState *env, int64_t arg)
{
uint32_t ret;
if (arg < 0) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
ret = 0;
} else {
env->PSW_USB_V = 0;
ret = (target_ulong)arg;
}
env->PSW_USB_AV = arg ^ arg * 2u;
env->PSW_USB_SAV |= env->PSW_USB_AV;
return ret;
}
static uint32_t ssov16(CPUTriCoreState *env, int32_t hw0, int32_t hw1)
{
int32_t max_pos = INT16_MAX;
int32_t max_neg = INT16_MIN;
int32_t av0, av1;
env->PSW_USB_V = 0;
av0 = hw0 ^ hw0 * 2u;
if (hw0 > max_pos) {
env->PSW_USB_V = (1 << 31);
hw0 = max_pos;
} else if (hw0 < max_neg) {
env->PSW_USB_V = (1 << 31);
hw0 = max_neg;
}
av1 = hw1 ^ hw1 * 2u;
if (hw1 > max_pos) {
env->PSW_USB_V = (1 << 31);
hw1 = max_pos;
} else if (hw1 < max_neg) {
env->PSW_USB_V = (1 << 31);
hw1 = max_neg;
}
env->PSW_USB_SV |= env->PSW_USB_V;
env->PSW_USB_AV = (av0 | av1) << 16;
env->PSW_USB_SAV |= env->PSW_USB_AV;
return (hw0 & 0xffff) | (hw1 << 16);
}
static uint32_t suov16(CPUTriCoreState *env, int32_t hw0, int32_t hw1)
{
int32_t max_pos = UINT16_MAX;
int32_t av0, av1;
env->PSW_USB_V = 0;
av0 = hw0 ^ hw0 * 2u;
if (hw0 > max_pos) {
env->PSW_USB_V = (1 << 31);
hw0 = max_pos;
} else if (hw0 < 0) {
env->PSW_USB_V = (1 << 31);
hw0 = 0;
}
av1 = hw1 ^ hw1 * 2u;
if (hw1 > max_pos) {
env->PSW_USB_V = (1 << 31);
hw1 = max_pos;
} else if (hw1 < 0) {
env->PSW_USB_V = (1 << 31);
hw1 = 0;
}
env->PSW_USB_SV |= env->PSW_USB_V;
env->PSW_USB_AV = (av0 | av1) << 16;
env->PSW_USB_SAV |= env->PSW_USB_AV;
return (hw0 & 0xffff) | (hw1 << 16);
}
target_ulong helper_add_ssov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2)
{
int64_t t1 = sextract64(r1, 0, 32);
int64_t t2 = sextract64(r2, 0, 32);
int64_t result = t1 + t2;
return ssov32(env, result);
}
uint64_t helper_add64_ssov(CPUTriCoreState *env, uint64_t r1, uint64_t r2)
{
uint64_t result;
int64_t ovf;
result = r1 + r2;
ovf = (result ^ r1) & ~(r1 ^ r2);
env->PSW_USB_AV = (result ^ result * 2u) >> 32;
env->PSW_USB_SAV |= env->PSW_USB_AV;
if (ovf < 0) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
/* ext_ret > MAX_INT */
if ((int64_t)r1 >= 0) {
result = INT64_MAX;
/* ext_ret < MIN_INT */
} else {
result = INT64_MIN;
}
} else {
env->PSW_USB_V = 0;
}
return result;
}
target_ulong helper_add_h_ssov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2)
{
int32_t ret_hw0, ret_hw1;
ret_hw0 = sextract32(r1, 0, 16) + sextract32(r2, 0, 16);
ret_hw1 = sextract32(r1, 16, 16) + sextract32(r2, 16, 16);
return ssov16(env, ret_hw0, ret_hw1);
}
uint32_t helper_addr_h_ssov(CPUTriCoreState *env, uint64_t r1, uint32_t r2_l,
uint32_t r2_h)
{
int64_t mul_res0 = sextract64(r1, 0, 32);
int64_t mul_res1 = sextract64(r1, 32, 32);
int64_t r2_low = sextract64(r2_l, 0, 32);
int64_t r2_high = sextract64(r2_h, 0, 32);
int64_t result0, result1;
uint32_t ovf0, ovf1;
uint32_t avf0, avf1;
ovf0 = ovf1 = 0;
result0 = r2_low + mul_res0 + 0x8000;
result1 = r2_high + mul_res1 + 0x8000;
avf0 = result0 * 2u;
avf0 = result0 ^ avf0;
avf1 = result1 * 2u;
avf1 = result1 ^ avf1;
if (result0 > INT32_MAX) {
ovf0 = (1 << 31);
result0 = INT32_MAX;
} else if (result0 < INT32_MIN) {
ovf0 = (1 << 31);
result0 = INT32_MIN;
}
if (result1 > INT32_MAX) {
ovf1 = (1 << 31);
result1 = INT32_MAX;
} else if (result1 < INT32_MIN) {
ovf1 = (1 << 31);
result1 = INT32_MIN;
}
env->PSW_USB_V = ovf0 | ovf1;
env->PSW_USB_SV |= env->PSW_USB_V;
env->PSW_USB_AV = avf0 | avf1;
env->PSW_USB_SAV |= env->PSW_USB_AV;
return (result1 & 0xffff0000ULL) | ((result0 >> 16) & 0xffffULL);
}
uint32_t helper_addsur_h_ssov(CPUTriCoreState *env, uint64_t r1, uint32_t r2_l,
uint32_t r2_h)
{
int64_t mul_res0 = sextract64(r1, 0, 32);
int64_t mul_res1 = sextract64(r1, 32, 32);
int64_t r2_low = sextract64(r2_l, 0, 32);
int64_t r2_high = sextract64(r2_h, 0, 32);
int64_t result0, result1;
uint32_t ovf0, ovf1;
uint32_t avf0, avf1;
ovf0 = ovf1 = 0;
result0 = r2_low - mul_res0 + 0x8000;
result1 = r2_high + mul_res1 + 0x8000;
avf0 = result0 * 2u;
avf0 = result0 ^ avf0;
avf1 = result1 * 2u;
avf1 = result1 ^ avf1;
if (result0 > INT32_MAX) {
ovf0 = (1 << 31);
result0 = INT32_MAX;
} else if (result0 < INT32_MIN) {
ovf0 = (1 << 31);
result0 = INT32_MIN;
}
if (result1 > INT32_MAX) {
ovf1 = (1 << 31);
result1 = INT32_MAX;
} else if (result1 < INT32_MIN) {
ovf1 = (1 << 31);
result1 = INT32_MIN;
}
env->PSW_USB_V = ovf0 | ovf1;
env->PSW_USB_SV |= env->PSW_USB_V;
env->PSW_USB_AV = avf0 | avf1;
env->PSW_USB_SAV |= env->PSW_USB_AV;
return (result1 & 0xffff0000ULL) | ((result0 >> 16) & 0xffffULL);
}
target_ulong helper_add_suov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2)
{
int64_t t1 = extract64(r1, 0, 32);
int64_t t2 = extract64(r2, 0, 32);
int64_t result = t1 + t2;
return suov32_pos(env, result);
}
target_ulong helper_add_h_suov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2)
{
int32_t ret_hw0, ret_hw1;
ret_hw0 = extract32(r1, 0, 16) + extract32(r2, 0, 16);
ret_hw1 = extract32(r1, 16, 16) + extract32(r2, 16, 16);
return suov16(env, ret_hw0, ret_hw1);
}
target_ulong helper_sub_ssov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2)
{
int64_t t1 = sextract64(r1, 0, 32);
int64_t t2 = sextract64(r2, 0, 32);
int64_t result = t1 - t2;
return ssov32(env, result);
}
uint64_t helper_sub64_ssov(CPUTriCoreState *env, uint64_t r1, uint64_t r2)
{
uint64_t result;
int64_t ovf;
result = r1 - r2;
ovf = (result ^ r1) & (r1 ^ r2);
env->PSW_USB_AV = (result ^ result * 2u) >> 32;
env->PSW_USB_SAV |= env->PSW_USB_AV;
if (ovf < 0) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
/* ext_ret > MAX_INT */
if ((int64_t)r1 >= 0) {
result = INT64_MAX;
/* ext_ret < MIN_INT */
} else {
result = INT64_MIN;
}
} else {
env->PSW_USB_V = 0;
}
return result;
}
target_ulong helper_sub_h_ssov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2)
{
int32_t ret_hw0, ret_hw1;
ret_hw0 = sextract32(r1, 0, 16) - sextract32(r2, 0, 16);
ret_hw1 = sextract32(r1, 16, 16) - sextract32(r2, 16, 16);
return ssov16(env, ret_hw0, ret_hw1);
}
uint32_t helper_subr_h_ssov(CPUTriCoreState *env, uint64_t r1, uint32_t r2_l,
uint32_t r2_h)
{
int64_t mul_res0 = sextract64(r1, 0, 32);
int64_t mul_res1 = sextract64(r1, 32, 32);
int64_t r2_low = sextract64(r2_l, 0, 32);
int64_t r2_high = sextract64(r2_h, 0, 32);
int64_t result0, result1;
uint32_t ovf0, ovf1;
uint32_t avf0, avf1;
ovf0 = ovf1 = 0;
result0 = r2_low - mul_res0 + 0x8000;
result1 = r2_high - mul_res1 + 0x8000;
avf0 = result0 * 2u;
avf0 = result0 ^ avf0;
avf1 = result1 * 2u;
avf1 = result1 ^ avf1;
if (result0 > INT32_MAX) {
ovf0 = (1 << 31);
result0 = INT32_MAX;
} else if (result0 < INT32_MIN) {
ovf0 = (1 << 31);
result0 = INT32_MIN;
}
if (result1 > INT32_MAX) {
ovf1 = (1 << 31);
result1 = INT32_MAX;
} else if (result1 < INT32_MIN) {
ovf1 = (1 << 31);
result1 = INT32_MIN;
}
env->PSW_USB_V = ovf0 | ovf1;
env->PSW_USB_SV |= env->PSW_USB_V;
env->PSW_USB_AV = avf0 | avf1;
env->PSW_USB_SAV |= env->PSW_USB_AV;
return (result1 & 0xffff0000ULL) | ((result0 >> 16) & 0xffffULL);
}
uint32_t helper_subadr_h_ssov(CPUTriCoreState *env, uint64_t r1, uint32_t r2_l,
uint32_t r2_h)
{
int64_t mul_res0 = sextract64(r1, 0, 32);
int64_t mul_res1 = sextract64(r1, 32, 32);
int64_t r2_low = sextract64(r2_l, 0, 32);
int64_t r2_high = sextract64(r2_h, 0, 32);
int64_t result0, result1;
uint32_t ovf0, ovf1;
uint32_t avf0, avf1;
ovf0 = ovf1 = 0;
result0 = r2_low + mul_res0 + 0x8000;
result1 = r2_high - mul_res1 + 0x8000;
avf0 = result0 * 2u;
avf0 = result0 ^ avf0;
avf1 = result1 * 2u;
avf1 = result1 ^ avf1;
if (result0 > INT32_MAX) {
ovf0 = (1 << 31);
result0 = INT32_MAX;
} else if (result0 < INT32_MIN) {
ovf0 = (1 << 31);
result0 = INT32_MIN;
}
if (result1 > INT32_MAX) {
ovf1 = (1 << 31);
result1 = INT32_MAX;
} else if (result1 < INT32_MIN) {
ovf1 = (1 << 31);
result1 = INT32_MIN;
}
env->PSW_USB_V = ovf0 | ovf1;
env->PSW_USB_SV |= env->PSW_USB_V;
env->PSW_USB_AV = avf0 | avf1;
env->PSW_USB_SAV |= env->PSW_USB_AV;
return (result1 & 0xffff0000ULL) | ((result0 >> 16) & 0xffffULL);
}
target_ulong helper_sub_suov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2)
{
int64_t t1 = extract64(r1, 0, 32);
int64_t t2 = extract64(r2, 0, 32);
int64_t result = t1 - t2;
return suov32_neg(env, result);
}
target_ulong helper_sub_h_suov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2)
{
int32_t ret_hw0, ret_hw1;
ret_hw0 = extract32(r1, 0, 16) - extract32(r2, 0, 16);
ret_hw1 = extract32(r1, 16, 16) - extract32(r2, 16, 16);
return suov16(env, ret_hw0, ret_hw1);
}
target_ulong helper_mul_ssov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2)
{
int64_t t1 = sextract64(r1, 0, 32);
int64_t t2 = sextract64(r2, 0, 32);
int64_t result = t1 * t2;
return ssov32(env, result);
}
target_ulong helper_mul_suov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2)
{
int64_t t1 = extract64(r1, 0, 32);
int64_t t2 = extract64(r2, 0, 32);
int64_t result = t1 * t2;
return suov32_pos(env, result);
}
target_ulong helper_sha_ssov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2)
{
int64_t t1 = sextract64(r1, 0, 32);
int32_t t2 = sextract64(r2, 0, 6);
int64_t result;
if (t2 == 0) {
result = t1;
} else if (t2 > 0) {
result = t1 << t2;
} else {
result = t1 >> -t2;
}
return ssov32(env, result);
}
uint32_t helper_abs_ssov(CPUTriCoreState *env, target_ulong r1)
{
target_ulong result;
result = ((int32_t)r1 >= 0) ? r1 : (0 - r1);
return ssov32(env, result);
}
uint32_t helper_abs_h_ssov(CPUTriCoreState *env, target_ulong r1)
{
int32_t ret_h0, ret_h1;
ret_h0 = sextract32(r1, 0, 16);
ret_h0 = (ret_h0 >= 0) ? ret_h0 : (0 - ret_h0);
ret_h1 = sextract32(r1, 16, 16);
ret_h1 = (ret_h1 >= 0) ? ret_h1 : (0 - ret_h1);
return ssov16(env, ret_h0, ret_h1);
}
target_ulong helper_absdif_ssov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2)
{
int64_t t1 = sextract64(r1, 0, 32);
int64_t t2 = sextract64(r2, 0, 32);
int64_t result;
if (t1 > t2) {
result = t1 - t2;
} else {
result = t2 - t1;
}
return ssov32(env, result);
}
uint32_t helper_absdif_h_ssov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2)
{
int32_t t1, t2;
int32_t ret_h0, ret_h1;
t1 = sextract32(r1, 0, 16);
t2 = sextract32(r2, 0, 16);
if (t1 > t2) {
ret_h0 = t1 - t2;
} else {
ret_h0 = t2 - t1;
}
t1 = sextract32(r1, 16, 16);
t2 = sextract32(r2, 16, 16);
if (t1 > t2) {
ret_h1 = t1 - t2;
} else {
ret_h1 = t2 - t1;
}
return ssov16(env, ret_h0, ret_h1);
}
target_ulong helper_madd32_ssov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2, target_ulong r3)
{
int64_t t1 = sextract64(r1, 0, 32);
int64_t t2 = sextract64(r2, 0, 32);
int64_t t3 = sextract64(r3, 0, 32);
int64_t result;
result = t2 + (t1 * t3);
return ssov32(env, result);
}
target_ulong helper_madd32_suov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2, target_ulong r3)
{
uint64_t t1 = extract64(r1, 0, 32);
uint64_t t2 = extract64(r2, 0, 32);
uint64_t t3 = extract64(r3, 0, 32);
int64_t result;
result = t2 + (t1 * t3);
return suov32_pos(env, result);
}
uint64_t helper_madd64_ssov(CPUTriCoreState *env, target_ulong r1,
uint64_t r2, target_ulong r3)
{
uint64_t ret, ovf;
int64_t t1 = sextract64(r1, 0, 32);
int64_t t3 = sextract64(r3, 0, 32);
int64_t mul;
mul = t1 * t3;
ret = mul + r2;
ovf = (ret ^ mul) & ~(mul ^ r2);
t1 = ret >> 32;
env->PSW_USB_AV = t1 ^ t1 * 2u;
env->PSW_USB_SAV |= env->PSW_USB_AV;
if ((int64_t)ovf < 0) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
/* ext_ret > MAX_INT */
if (mul >= 0) {
ret = INT64_MAX;
/* ext_ret < MIN_INT */
} else {
ret = INT64_MIN;
}
} else {
env->PSW_USB_V = 0;
}
return ret;
}
uint32_t
helper_madd32_q_add_ssov(CPUTriCoreState *env, uint64_t r1, uint64_t r2)
{
int64_t result;
result = (r1 + r2);
env->PSW_USB_AV = (result ^ result * 2u);
env->PSW_USB_SAV |= env->PSW_USB_AV;
/* we do the saturation by hand, since we produce an overflow on the host
if the mul before was (0x80000000 * 0x80000000) << 1). If this is the
case, we flip the saturated value. */
if (r2 == 0x8000000000000000LL) {
if (result > 0x7fffffffLL) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
result = INT32_MIN;
} else if (result < -0x80000000LL) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
result = INT32_MAX;
} else {
env->PSW_USB_V = 0;
}
} else {
if (result > 0x7fffffffLL) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
result = INT32_MAX;
} else if (result < -0x80000000LL) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
result = INT32_MIN;
} else {
env->PSW_USB_V = 0;
}
}
return (uint32_t)result;
}
uint64_t helper_madd64_q_ssov(CPUTriCoreState *env, uint64_t r1, uint32_t r2,
uint32_t r3, uint32_t n)
{
int64_t t1 = (int64_t)r1;
int64_t t2 = sextract64(r2, 0, 32);
int64_t t3 = sextract64(r3, 0, 32);
int64_t result, mul;
int64_t ovf;
mul = (t2 * t3) << n;
result = mul + t1;
env->PSW_USB_AV = (result ^ result * 2u) >> 32;
env->PSW_USB_SAV |= env->PSW_USB_AV;
ovf = (result ^ mul) & ~(mul ^ t1);
/* we do the saturation by hand, since we produce an overflow on the host
if the mul was (0x80000000 * 0x80000000) << 1). If this is the
case, we flip the saturated value. */
if ((r2 == 0x80000000) && (r3 == 0x80000000) && (n == 1)) {
if (ovf >= 0) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
/* ext_ret > MAX_INT */
if (mul < 0) {
result = INT64_MAX;
/* ext_ret < MIN_INT */
} else {
result = INT64_MIN;
}
} else {
env->PSW_USB_V = 0;
}
} else {
if (ovf < 0) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
/* ext_ret > MAX_INT */
if (mul >= 0) {
result = INT64_MAX;
/* ext_ret < MIN_INT */
} else {
result = INT64_MIN;
}
} else {
env->PSW_USB_V = 0;
}
}
return (uint64_t)result;
}
uint32_t helper_maddr_q_ssov(CPUTriCoreState *env, uint32_t r1, uint32_t r2,
uint32_t r3, uint32_t n)
{
int64_t t1 = sextract64(r1, 0, 32);
int64_t t2 = sextract64(r2, 0, 32);
int64_t t3 = sextract64(r3, 0, 32);
int64_t mul, ret;
if ((t2 == -0x8000ll) && (t3 == -0x8000ll) && (n == 1)) {
mul = 0x7fffffff;
} else {
mul = (t2 * t3) << n;
}
ret = t1 + mul + 0x8000;
env->PSW_USB_AV = ret ^ ret * 2u;
env->PSW_USB_SAV |= env->PSW_USB_AV;
if (ret > 0x7fffffffll) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV |= env->PSW_USB_V;
ret = INT32_MAX;
} else if (ret < -0x80000000ll) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV |= env->PSW_USB_V;
ret = INT32_MIN;
} else {
env->PSW_USB_V = 0;
}
return ret & 0xffff0000ll;
}
uint64_t helper_madd64_suov(CPUTriCoreState *env, target_ulong r1,
uint64_t r2, target_ulong r3)
{
uint64_t ret, mul;
uint64_t t1 = extract64(r1, 0, 32);
uint64_t t3 = extract64(r3, 0, 32);
mul = t1 * t3;
ret = mul + r2;
t1 = ret >> 32;
env->PSW_USB_AV = t1 ^ t1 * 2u;
env->PSW_USB_SAV |= env->PSW_USB_AV;
if (ret < r2) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
/* saturate */
ret = UINT64_MAX;
} else {
env->PSW_USB_V = 0;
}
return ret;
}
target_ulong helper_msub32_ssov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2, target_ulong r3)
{
int64_t t1 = sextract64(r1, 0, 32);
int64_t t2 = sextract64(r2, 0, 32);
int64_t t3 = sextract64(r3, 0, 32);
int64_t result;
result = t2 - (t1 * t3);
return ssov32(env, result);
}
target_ulong helper_msub32_suov(CPUTriCoreState *env, target_ulong r1,
target_ulong r2, target_ulong r3)
{
uint64_t t1 = extract64(r1, 0, 32);
uint64_t t2 = extract64(r2, 0, 32);
uint64_t t3 = extract64(r3, 0, 32);
uint64_t result;
uint64_t mul;
mul = (t1 * t3);
result = t2 - mul;
env->PSW_USB_AV = result ^ result * 2u;
env->PSW_USB_SAV |= env->PSW_USB_AV;
/* we calculate ovf by hand here, because the multiplication can overflow on
the host, which would give false results if we compare to less than
zero */
if (mul > t2) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
result = 0;
} else {
env->PSW_USB_V = 0;
}
return result;
}
uint64_t helper_msub64_ssov(CPUTriCoreState *env, target_ulong r1,
uint64_t r2, target_ulong r3)
{
uint64_t ret, ovf;
int64_t t1 = sextract64(r1, 0, 32);
int64_t t3 = sextract64(r3, 0, 32);
int64_t mul;
mul = t1 * t3;
ret = r2 - mul;
ovf = (ret ^ r2) & (mul ^ r2);
t1 = ret >> 32;
env->PSW_USB_AV = t1 ^ t1 * 2u;
env->PSW_USB_SAV |= env->PSW_USB_AV;
if ((int64_t)ovf < 0) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
/* ext_ret > MAX_INT */
if (mul < 0) {
ret = INT64_MAX;
/* ext_ret < MIN_INT */
} else {
ret = INT64_MIN;
}
} else {
env->PSW_USB_V = 0;
}
return ret;
}
uint64_t helper_msub64_suov(CPUTriCoreState *env, target_ulong r1,
uint64_t r2, target_ulong r3)
{
uint64_t ret, mul;
uint64_t t1 = extract64(r1, 0, 32);
uint64_t t3 = extract64(r3, 0, 32);
mul = t1 * t3;
ret = r2 - mul;
t1 = ret >> 32;
env->PSW_USB_AV = t1 ^ t1 * 2u;
env->PSW_USB_SAV |= env->PSW_USB_AV;
if (ret > r2) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
/* saturate */
ret = 0;
} else {
env->PSW_USB_V = 0;
}
return ret;
}
uint32_t
helper_msub32_q_sub_ssov(CPUTriCoreState *env, uint64_t r1, uint64_t r2)
{
int64_t result;
int64_t t1 = (int64_t)r1;
int64_t t2 = (int64_t)r2;
result = t1 - t2;
env->PSW_USB_AV = (result ^ result * 2u);
env->PSW_USB_SAV |= env->PSW_USB_AV;
/* we do the saturation by hand, since we produce an overflow on the host
if the mul before was (0x80000000 * 0x80000000) << 1). If this is the
case, we flip the saturated value. */
if (r2 == 0x8000000000000000LL) {
if (result > 0x7fffffffLL) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
result = INT32_MIN;
} else if (result < -0x80000000LL) {
env->PSW_USB_V = (1 << 31);
env->PSW_USB_SV = (1 << 31);
result = INT32_MAX;
} else {
env->PSW_USB_V = 0;