We've currently got 18 architectures in QEMU, and thus 18 target-xxx folders in the root folder of the QEMU source tree. More architectures (e.g. RISC-V, AVR) are likely to be included soon, too, so the main folder of the QEMU sources slowly gets quite overcrowded with the target-xxx folders. To disburden the main folder a little bit, let's move the target-xxx folders into a dedicated target/ folder, so that target-xxx/ simply becomes target/xxx/ instead. Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part] Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part] Acked-by: Michael Walle <michael@walle.cc> [lm32 part] Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part] Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part] Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part] Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part] Acked-by: Richard Henderson <rth@twiddle.net> [alpha part] Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part] Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part] Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [crisµblaze part] Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part] Signed-off-by: Thomas Huth <thuth@redhat.com>
472 lines
11 KiB
C
472 lines
11 KiB
C
/*
|
|
* Helpers for lazy condition code handling
|
|
*
|
|
* Copyright (c) 2003-2005 Fabrice Bellard
|
|
*
|
|
* 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 "exec/helper-proto.h"
|
|
|
|
static uint32_t compute_all_flags(CPUSPARCState *env)
|
|
{
|
|
return env->psr & PSR_ICC;
|
|
}
|
|
|
|
static uint32_t compute_C_flags(CPUSPARCState *env)
|
|
{
|
|
return env->psr & PSR_CARRY;
|
|
}
|
|
|
|
static inline uint32_t get_NZ_icc(int32_t dst)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if (dst == 0) {
|
|
ret = PSR_ZERO;
|
|
} else if (dst < 0) {
|
|
ret = PSR_NEG;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
#ifdef TARGET_SPARC64
|
|
static uint32_t compute_all_flags_xcc(CPUSPARCState *env)
|
|
{
|
|
return env->xcc & PSR_ICC;
|
|
}
|
|
|
|
static uint32_t compute_C_flags_xcc(CPUSPARCState *env)
|
|
{
|
|
return env->xcc & PSR_CARRY;
|
|
}
|
|
|
|
static inline uint32_t get_NZ_xcc(target_long dst)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if (!dst) {
|
|
ret = PSR_ZERO;
|
|
} else if (dst < 0) {
|
|
ret = PSR_NEG;
|
|
}
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
static inline uint32_t get_V_div_icc(target_ulong src2)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if (src2 != 0) {
|
|
ret = PSR_OVF;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_all_div(CPUSPARCState *env)
|
|
{
|
|
uint32_t ret;
|
|
|
|
ret = get_NZ_icc(CC_DST);
|
|
ret |= get_V_div_icc(CC_SRC2);
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_C_div(CPUSPARCState *env)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline uint32_t get_C_add_icc(uint32_t dst, uint32_t src1)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if (dst < src1) {
|
|
ret = PSR_CARRY;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static inline uint32_t get_C_addx_icc(uint32_t dst, uint32_t src1,
|
|
uint32_t src2)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if (((src1 & src2) | (~dst & (src1 | src2))) & (1U << 31)) {
|
|
ret = PSR_CARRY;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static inline uint32_t get_V_add_icc(uint32_t dst, uint32_t src1,
|
|
uint32_t src2)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if (((src1 ^ src2 ^ -1) & (src1 ^ dst)) & (1U << 31)) {
|
|
ret = PSR_OVF;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
#ifdef TARGET_SPARC64
|
|
static inline uint32_t get_C_add_xcc(target_ulong dst, target_ulong src1)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if (dst < src1) {
|
|
ret = PSR_CARRY;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static inline uint32_t get_C_addx_xcc(target_ulong dst, target_ulong src1,
|
|
target_ulong src2)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if (((src1 & src2) | (~dst & (src1 | src2))) & (1ULL << 63)) {
|
|
ret = PSR_CARRY;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static inline uint32_t get_V_add_xcc(target_ulong dst, target_ulong src1,
|
|
target_ulong src2)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if (((src1 ^ src2 ^ -1) & (src1 ^ dst)) & (1ULL << 63)) {
|
|
ret = PSR_OVF;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_all_add_xcc(CPUSPARCState *env)
|
|
{
|
|
uint32_t ret;
|
|
|
|
ret = get_NZ_xcc(CC_DST);
|
|
ret |= get_C_add_xcc(CC_DST, CC_SRC);
|
|
ret |= get_V_add_xcc(CC_DST, CC_SRC, CC_SRC2);
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_C_add_xcc(CPUSPARCState *env)
|
|
{
|
|
return get_C_add_xcc(CC_DST, CC_SRC);
|
|
}
|
|
#endif
|
|
|
|
static uint32_t compute_all_add(CPUSPARCState *env)
|
|
{
|
|
uint32_t ret;
|
|
|
|
ret = get_NZ_icc(CC_DST);
|
|
ret |= get_C_add_icc(CC_DST, CC_SRC);
|
|
ret |= get_V_add_icc(CC_DST, CC_SRC, CC_SRC2);
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_C_add(CPUSPARCState *env)
|
|
{
|
|
return get_C_add_icc(CC_DST, CC_SRC);
|
|
}
|
|
|
|
#ifdef TARGET_SPARC64
|
|
static uint32_t compute_all_addx_xcc(CPUSPARCState *env)
|
|
{
|
|
uint32_t ret;
|
|
|
|
ret = get_NZ_xcc(CC_DST);
|
|
ret |= get_C_addx_xcc(CC_DST, CC_SRC, CC_SRC2);
|
|
ret |= get_V_add_xcc(CC_DST, CC_SRC, CC_SRC2);
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_C_addx_xcc(CPUSPARCState *env)
|
|
{
|
|
return get_C_addx_xcc(CC_DST, CC_SRC, CC_SRC2);
|
|
}
|
|
#endif
|
|
|
|
static uint32_t compute_all_addx(CPUSPARCState *env)
|
|
{
|
|
uint32_t ret;
|
|
|
|
ret = get_NZ_icc(CC_DST);
|
|
ret |= get_C_addx_icc(CC_DST, CC_SRC, CC_SRC2);
|
|
ret |= get_V_add_icc(CC_DST, CC_SRC, CC_SRC2);
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_C_addx(CPUSPARCState *env)
|
|
{
|
|
return get_C_addx_icc(CC_DST, CC_SRC, CC_SRC2);
|
|
}
|
|
|
|
static inline uint32_t get_V_tag_icc(target_ulong src1, target_ulong src2)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if ((src1 | src2) & 0x3) {
|
|
ret = PSR_OVF;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_all_tadd(CPUSPARCState *env)
|
|
{
|
|
uint32_t ret;
|
|
|
|
ret = get_NZ_icc(CC_DST);
|
|
ret |= get_C_add_icc(CC_DST, CC_SRC);
|
|
ret |= get_V_add_icc(CC_DST, CC_SRC, CC_SRC2);
|
|
ret |= get_V_tag_icc(CC_SRC, CC_SRC2);
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_all_taddtv(CPUSPARCState *env)
|
|
{
|
|
uint32_t ret;
|
|
|
|
ret = get_NZ_icc(CC_DST);
|
|
ret |= get_C_add_icc(CC_DST, CC_SRC);
|
|
return ret;
|
|
}
|
|
|
|
static inline uint32_t get_C_sub_icc(uint32_t src1, uint32_t src2)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if (src1 < src2) {
|
|
ret = PSR_CARRY;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static inline uint32_t get_C_subx_icc(uint32_t dst, uint32_t src1,
|
|
uint32_t src2)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if (((~src1 & src2) | (dst & (~src1 | src2))) & (1U << 31)) {
|
|
ret = PSR_CARRY;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static inline uint32_t get_V_sub_icc(uint32_t dst, uint32_t src1,
|
|
uint32_t src2)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if (((src1 ^ src2) & (src1 ^ dst)) & (1U << 31)) {
|
|
ret = PSR_OVF;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
#ifdef TARGET_SPARC64
|
|
static inline uint32_t get_C_sub_xcc(target_ulong src1, target_ulong src2)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if (src1 < src2) {
|
|
ret = PSR_CARRY;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static inline uint32_t get_C_subx_xcc(target_ulong dst, target_ulong src1,
|
|
target_ulong src2)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if (((~src1 & src2) | (dst & (~src1 | src2))) & (1ULL << 63)) {
|
|
ret = PSR_CARRY;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static inline uint32_t get_V_sub_xcc(target_ulong dst, target_ulong src1,
|
|
target_ulong src2)
|
|
{
|
|
uint32_t ret = 0;
|
|
|
|
if (((src1 ^ src2) & (src1 ^ dst)) & (1ULL << 63)) {
|
|
ret = PSR_OVF;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_all_sub_xcc(CPUSPARCState *env)
|
|
{
|
|
uint32_t ret;
|
|
|
|
ret = get_NZ_xcc(CC_DST);
|
|
ret |= get_C_sub_xcc(CC_SRC, CC_SRC2);
|
|
ret |= get_V_sub_xcc(CC_DST, CC_SRC, CC_SRC2);
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_C_sub_xcc(CPUSPARCState *env)
|
|
{
|
|
return get_C_sub_xcc(CC_SRC, CC_SRC2);
|
|
}
|
|
#endif
|
|
|
|
static uint32_t compute_all_sub(CPUSPARCState *env)
|
|
{
|
|
uint32_t ret;
|
|
|
|
ret = get_NZ_icc(CC_DST);
|
|
ret |= get_C_sub_icc(CC_SRC, CC_SRC2);
|
|
ret |= get_V_sub_icc(CC_DST, CC_SRC, CC_SRC2);
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_C_sub(CPUSPARCState *env)
|
|
{
|
|
return get_C_sub_icc(CC_SRC, CC_SRC2);
|
|
}
|
|
|
|
#ifdef TARGET_SPARC64
|
|
static uint32_t compute_all_subx_xcc(CPUSPARCState *env)
|
|
{
|
|
uint32_t ret;
|
|
|
|
ret = get_NZ_xcc(CC_DST);
|
|
ret |= get_C_subx_xcc(CC_DST, CC_SRC, CC_SRC2);
|
|
ret |= get_V_sub_xcc(CC_DST, CC_SRC, CC_SRC2);
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_C_subx_xcc(CPUSPARCState *env)
|
|
{
|
|
return get_C_subx_xcc(CC_DST, CC_SRC, CC_SRC2);
|
|
}
|
|
#endif
|
|
|
|
static uint32_t compute_all_subx(CPUSPARCState *env)
|
|
{
|
|
uint32_t ret;
|
|
|
|
ret = get_NZ_icc(CC_DST);
|
|
ret |= get_C_subx_icc(CC_DST, CC_SRC, CC_SRC2);
|
|
ret |= get_V_sub_icc(CC_DST, CC_SRC, CC_SRC2);
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_C_subx(CPUSPARCState *env)
|
|
{
|
|
return get_C_subx_icc(CC_DST, CC_SRC, CC_SRC2);
|
|
}
|
|
|
|
static uint32_t compute_all_tsub(CPUSPARCState *env)
|
|
{
|
|
uint32_t ret;
|
|
|
|
ret = get_NZ_icc(CC_DST);
|
|
ret |= get_C_sub_icc(CC_SRC, CC_SRC2);
|
|
ret |= get_V_sub_icc(CC_DST, CC_SRC, CC_SRC2);
|
|
ret |= get_V_tag_icc(CC_SRC, CC_SRC2);
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_all_tsubtv(CPUSPARCState *env)
|
|
{
|
|
uint32_t ret;
|
|
|
|
ret = get_NZ_icc(CC_DST);
|
|
ret |= get_C_sub_icc(CC_SRC, CC_SRC2);
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t compute_all_logic(CPUSPARCState *env)
|
|
{
|
|
return get_NZ_icc(CC_DST);
|
|
}
|
|
|
|
static uint32_t compute_C_logic(CPUSPARCState *env)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#ifdef TARGET_SPARC64
|
|
static uint32_t compute_all_logic_xcc(CPUSPARCState *env)
|
|
{
|
|
return get_NZ_xcc(CC_DST);
|
|
}
|
|
#endif
|
|
|
|
typedef struct CCTable {
|
|
uint32_t (*compute_all)(CPUSPARCState *env); /* return all the flags */
|
|
uint32_t (*compute_c)(CPUSPARCState *env); /* return the C flag */
|
|
} CCTable;
|
|
|
|
static const CCTable icc_table[CC_OP_NB] = {
|
|
/* CC_OP_DYNAMIC should never happen */
|
|
[CC_OP_FLAGS] = { compute_all_flags, compute_C_flags },
|
|
[CC_OP_DIV] = { compute_all_div, compute_C_div },
|
|
[CC_OP_ADD] = { compute_all_add, compute_C_add },
|
|
[CC_OP_ADDX] = { compute_all_addx, compute_C_addx },
|
|
[CC_OP_TADD] = { compute_all_tadd, compute_C_add },
|
|
[CC_OP_TADDTV] = { compute_all_taddtv, compute_C_add },
|
|
[CC_OP_SUB] = { compute_all_sub, compute_C_sub },
|
|
[CC_OP_SUBX] = { compute_all_subx, compute_C_subx },
|
|
[CC_OP_TSUB] = { compute_all_tsub, compute_C_sub },
|
|
[CC_OP_TSUBTV] = { compute_all_tsubtv, compute_C_sub },
|
|
[CC_OP_LOGIC] = { compute_all_logic, compute_C_logic },
|
|
};
|
|
|
|
#ifdef TARGET_SPARC64
|
|
static const CCTable xcc_table[CC_OP_NB] = {
|
|
/* CC_OP_DYNAMIC should never happen */
|
|
[CC_OP_FLAGS] = { compute_all_flags_xcc, compute_C_flags_xcc },
|
|
[CC_OP_DIV] = { compute_all_logic_xcc, compute_C_logic },
|
|
[CC_OP_ADD] = { compute_all_add_xcc, compute_C_add_xcc },
|
|
[CC_OP_ADDX] = { compute_all_addx_xcc, compute_C_addx_xcc },
|
|
[CC_OP_TADD] = { compute_all_add_xcc, compute_C_add_xcc },
|
|
[CC_OP_TADDTV] = { compute_all_add_xcc, compute_C_add_xcc },
|
|
[CC_OP_SUB] = { compute_all_sub_xcc, compute_C_sub_xcc },
|
|
[CC_OP_SUBX] = { compute_all_subx_xcc, compute_C_subx_xcc },
|
|
[CC_OP_TSUB] = { compute_all_sub_xcc, compute_C_sub_xcc },
|
|
[CC_OP_TSUBTV] = { compute_all_sub_xcc, compute_C_sub_xcc },
|
|
[CC_OP_LOGIC] = { compute_all_logic_xcc, compute_C_logic },
|
|
};
|
|
#endif
|
|
|
|
void helper_compute_psr(CPUSPARCState *env)
|
|
{
|
|
uint32_t new_psr;
|
|
|
|
new_psr = icc_table[CC_OP].compute_all(env);
|
|
env->psr = new_psr;
|
|
#ifdef TARGET_SPARC64
|
|
new_psr = xcc_table[CC_OP].compute_all(env);
|
|
env->xcc = new_psr;
|
|
#endif
|
|
CC_OP = CC_OP_FLAGS;
|
|
}
|
|
|
|
uint32_t helper_compute_C_icc(CPUSPARCState *env)
|
|
{
|
|
return icc_table[CC_OP].compute_c(env) >> PSR_CARRY_SHIFT;
|
|
}
|