/*
* SH4 emulation
- *
+ *
* Copyright (c) 2005 Samuel Tardieu
*
* This library is free software; you can redistribute it and/or
* 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include <assert.h>
+#include <stdlib.h>
#include "exec.h"
+#include "helper.h"
-void cpu_loop_exit(void)
+static void cpu_restore_state_from_retaddr(void *retaddr)
{
- longjmp(env->jmp_env, 1);
-}
+ TranslationBlock *tb;
+ unsigned long pc;
-void do_raise_exception(void)
-{
- cpu_loop_exit();
+ if (retaddr) {
+ pc = (unsigned long) retaddr;
+ tb = tb_find_pc(pc);
+ if (tb) {
+ /* the PC is inside the translated code. It means that we have
+ a virtual CPU fault */
+ cpu_restore_state(tb, env, pc);
+ }
+ }
}
#ifndef CONFIG_USER_ONLY
#define MMUSUFFIX _mmu
-#define GETPC() (__builtin_return_address(0))
#define SHIFT 0
#include "softmmu_template.h"
#define SHIFT 3
#include "softmmu_template.h"
-void tlb_fill(target_ulong addr, int is_write, int is_user, void *retaddr)
+void tlb_fill(target_ulong addr, int is_write, int mmu_idx, void *retaddr)
{
- TranslationBlock *tb;
CPUState *saved_env;
- unsigned long pc;
int ret;
/* XXX: hack to restore env in all cases, even if not called from
generated code */
saved_env = env;
env = cpu_single_env;
- ret = cpu_sh4_handle_mmu_fault(env, addr, is_write, is_user, 1);
+ ret = cpu_sh4_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
if (ret) {
- if (retaddr) {
- /* now we have a real cpu fault */
- pc = (unsigned long) retaddr;
- tb = tb_find_pc(pc);
- if (tb) {
- /* the PC is inside the translated code. It means that we have
- a virtual CPU fault */
- cpu_restore_state(tb, env, pc, NULL);
- }
- }
- do_raise_exception();
+ /* now we have a real cpu fault */
+ cpu_restore_state_from_retaddr(retaddr);
+ cpu_loop_exit(env);
}
env = saved_env;
}
#endif
-void helper_addc_T0_T1(void)
+void helper_ldtlb(void)
+{
+#ifdef CONFIG_USER_ONLY
+ /* XXXXX */
+ cpu_abort(env, "Unhandled ldtlb");
+#else
+ cpu_load_tlb(env);
+#endif
+}
+
+static inline void raise_exception(int index, void *retaddr)
+{
+ env->exception_index = index;
+ cpu_restore_state_from_retaddr(retaddr);
+ cpu_loop_exit(env);
+}
+
+void helper_raise_illegal_instruction(void)
+{
+ raise_exception(0x180, GETPC());
+}
+
+void helper_raise_slot_illegal_instruction(void)
+{
+ raise_exception(0x1a0, GETPC());
+}
+
+void helper_raise_fpu_disable(void)
+{
+ raise_exception(0x800, GETPC());
+}
+
+void helper_raise_slot_fpu_disable(void)
+{
+ raise_exception(0x820, GETPC());
+}
+
+void helper_debug(void)
+{
+ env->exception_index = EXCP_DEBUG;
+ cpu_loop_exit(env);
+}
+
+void helper_sleep(uint32_t next_pc)
+{
+ env->halted = 1;
+ env->in_sleep = 1;
+ env->exception_index = EXCP_HLT;
+ env->pc = next_pc;
+ cpu_loop_exit(env);
+}
+
+void helper_trapa(uint32_t tra)
+{
+ env->tra = tra << 2;
+ raise_exception(0x160, GETPC());
+}
+
+void helper_movcal(uint32_t address, uint32_t value)
+{
+ if (cpu_sh4_is_cached (env, address))
+ {
+ memory_content *r = malloc (sizeof(memory_content));
+ r->address = address;
+ r->value = value;
+ r->next = NULL;
+
+ *(env->movcal_backup_tail) = r;
+ env->movcal_backup_tail = &(r->next);
+ }
+}
+
+void helper_discard_movcal_backup(void)
+{
+ memory_content *current = env->movcal_backup;
+
+ while(current)
+ {
+ memory_content *next = current->next;
+ free (current);
+ env->movcal_backup = current = next;
+ if (current == NULL)
+ env->movcal_backup_tail = &(env->movcal_backup);
+ }
+}
+
+void helper_ocbi(uint32_t address)
+{
+ memory_content **current = &(env->movcal_backup);
+ while (*current)
+ {
+ uint32_t a = (*current)->address;
+ if ((a & ~0x1F) == (address & ~0x1F))
+ {
+ memory_content *next = (*current)->next;
+ stl(a, (*current)->value);
+
+ if (next == NULL)
+ {
+ env->movcal_backup_tail = current;
+ }
+
+ free (*current);
+ *current = next;
+ break;
+ }
+ }
+}
+
+uint32_t helper_addc(uint32_t arg0, uint32_t arg1)
{
uint32_t tmp0, tmp1;
- tmp1 = T0 + T1;
- tmp0 = T1;
- T1 = tmp1 + (env->sr & 1);
+ tmp1 = arg0 + arg1;
+ tmp0 = arg1;
+ arg1 = tmp1 + (env->sr & 1);
if (tmp0 > tmp1)
env->sr |= SR_T;
else
env->sr &= ~SR_T;
- if (tmp1 > T1)
+ if (tmp1 > arg1)
env->sr |= SR_T;
+ return arg1;
}
-void helper_addv_T0_T1(void)
+uint32_t helper_addv(uint32_t arg0, uint32_t arg1)
{
uint32_t dest, src, ans;
- if ((int32_t) T1 >= 0)
+ if ((int32_t) arg1 >= 0)
dest = 0;
else
dest = 1;
- if ((int32_t) T0 >= 0)
+ if ((int32_t) arg0 >= 0)
src = 0;
else
src = 1;
src += dest;
- T1 += T0;
- if ((int32_t) T1 >= 0)
+ arg1 += arg0;
+ if ((int32_t) arg1 >= 0)
ans = 0;
else
ans = 1;
env->sr &= ~SR_T;
} else
env->sr &= ~SR_T;
+ return arg1;
}
#define T (env->sr & SR_T)
#define SETM env->sr |= SR_M
#define CLRM env->sr &= ~SR_M
-void helper_div1_T0_T1(void)
+uint32_t helper_div1(uint32_t arg0, uint32_t arg1)
{
uint32_t tmp0, tmp2;
uint8_t old_q, tmp1 = 0xff;
- printf("div1 T0=0x%08x T1=0x%08x M=%d Q=%d T=%d\n", T0, T1, M, Q, T);
+ //printf("div1 arg0=0x%08x arg1=0x%08x M=%d Q=%d T=%d\n", arg0, arg1, M, Q, T);
old_q = Q;
- if ((0x80000000 & T1) != 0)
+ if ((0x80000000 & arg1) != 0)
SETQ;
else
CLRQ;
- tmp2 = T0;
- T1 <<= 1;
- T1 |= T;
+ tmp2 = arg0;
+ arg1 <<= 1;
+ arg1 |= T;
switch (old_q) {
case 0:
switch (M) {
case 0:
- tmp0 = T1;
- T1 -= tmp2;
- tmp1 = T1 > tmp0;
+ tmp0 = arg1;
+ arg1 -= tmp2;
+ tmp1 = arg1 > tmp0;
switch (Q) {
case 0:
if (tmp1)
}
break;
case 1:
- tmp0 = T1;
- T1 += tmp2;
- tmp1 = T1 < tmp0;
+ tmp0 = arg1;
+ arg1 += tmp2;
+ tmp1 = arg1 < tmp0;
switch (Q) {
case 0:
if (tmp1 == 0)
case 1:
switch (M) {
case 0:
- tmp0 = T1;
- T1 += tmp2;
- tmp1 = T1 < tmp0;
+ tmp0 = arg1;
+ arg1 += tmp2;
+ tmp1 = arg1 < tmp0;
switch (Q) {
case 0:
if (tmp1)
}
break;
case 1:
- tmp0 = T1;
- T1 -= tmp2;
- tmp1 = T1 > tmp0;
+ tmp0 = arg1;
+ arg1 -= tmp2;
+ tmp1 = arg1 > tmp0;
switch (Q) {
case 0:
if (tmp1 == 0)
SETT;
else
CLRT;
- printf("Output: T1=0x%08x M=%d Q=%d T=%d\n", T1, M, Q, T);
-}
-
-void helper_dmulsl_T0_T1()
-{
- int64_t res;
-
- res = (int64_t) (int32_t) T0 *(int64_t) (int32_t) T1;
- env->mach = (res >> 32) & 0xffffffff;
- env->macl = res & 0xffffffff;
-}
-
-void helper_dmulul_T0_T1()
-{
- uint64_t res;
-
- res = (uint64_t) (uint32_t) T0 *(uint64_t) (uint32_t) T1;
- env->mach = (res >> 32) & 0xffffffff;
- env->macl = res & 0xffffffff;
+ //printf("Output: arg1=0x%08x M=%d Q=%d T=%d\n", arg1, M, Q, T);
+ return arg1;
}
-void helper_macl_T0_T1()
+void helper_macl(uint32_t arg0, uint32_t arg1)
{
int64_t res;
res = ((uint64_t) env->mach << 32) | env->macl;
- res += (int64_t) (int32_t) T0 *(int64_t) (int32_t) T1;
+ res += (int64_t) (int32_t) arg0 *(int64_t) (int32_t) arg1;
env->mach = (res >> 32) & 0xffffffff;
env->macl = res & 0xffffffff;
if (env->sr & SR_S) {
}
}
-void helper_macw_T0_T1()
+void helper_macw(uint32_t arg0, uint32_t arg1)
{
int64_t res;
res = ((uint64_t) env->mach << 32) | env->macl;
- res += (int64_t) (int16_t) T0 *(int64_t) (int16_t) T1;
+ res += (int64_t) (int16_t) arg0 *(int64_t) (int16_t) arg1;
env->mach = (res >> 32) & 0xffffffff;
env->macl = res & 0xffffffff;
if (env->sr & SR_S) {
}
}
-void helper_negc_T0()
-{
- uint32_t temp;
-
- temp = -T0;
- T0 = temp - (env->sr & SR_T);
- if (0 < temp)
- env->sr |= SR_T;
- else
- env->sr &= ~SR_T;
- if (temp < T0)
- env->sr |= SR_T;
-}
-
-void helper_subc_T0_T1()
+uint32_t helper_subc(uint32_t arg0, uint32_t arg1)
{
uint32_t tmp0, tmp1;
- tmp1 = T1 - T0;
- tmp0 = T1;
- T1 = tmp1 - (env->sr & SR_T);
+ tmp1 = arg1 - arg0;
+ tmp0 = arg1;
+ arg1 = tmp1 - (env->sr & SR_T);
if (tmp0 < tmp1)
env->sr |= SR_T;
else
env->sr &= ~SR_T;
- if (tmp1 < T1)
+ if (tmp1 < arg1)
env->sr |= SR_T;
+ return arg1;
}
-void helper_subv_T0_T1()
+uint32_t helper_subv(uint32_t arg0, uint32_t arg1)
{
int32_t dest, src, ans;
- if ((int32_t) T1 >= 0)
+ if ((int32_t) arg1 >= 0)
dest = 0;
else
dest = 1;
- if ((int32_t) T0 >= 0)
+ if ((int32_t) arg0 >= 0)
src = 0;
else
src = 1;
src += dest;
- T1 -= T0;
- if ((int32_t) T1 >= 0)
+ arg1 -= arg0;
+ if ((int32_t) arg1 >= 0)
ans = 0;
else
ans = 1;
env->sr &= ~SR_T;
} else
env->sr &= ~SR_T;
+ return arg1;
}
-void helper_rotcl(uint32_t * addr)
+static inline void set_t(void)
{
- uint32_t new;
+ env->sr |= SR_T;
+}
- new = (*addr << 1) | (env->sr & SR_T);
- if (*addr & 0x80000000)
- env->sr |= SR_T;
- else
- env->sr &= ~SR_T;
- *addr = new;
+static inline void clr_t(void)
+{
+ env->sr &= ~SR_T;
}
-void helper_rotcr(uint32_t * addr)
+void helper_ld_fpscr(uint32_t val)
{
- uint32_t new;
+ env->fpscr = val & FPSCR_MASK;
+ if ((val & FPSCR_RM_MASK) == FPSCR_RM_ZERO) {
+ set_float_rounding_mode(float_round_to_zero, &env->fp_status);
+ } else {
+ set_float_rounding_mode(float_round_nearest_even, &env->fp_status);
+ }
+ set_flush_to_zero((val & FPSCR_DN) != 0, &env->fp_status);
+}
- new = (*addr >> 1) | ((env->sr & SR_T) ? 0x80000000 : 0);
- if (*addr & 1)
- env->sr |= SR_T;
- else
- env->sr &= ~SR_T;
- *addr = new;
+static void update_fpscr(void *retaddr)
+{
+ int xcpt, cause, enable;
+
+ xcpt = get_float_exception_flags(&env->fp_status);
+
+ /* Clear the flag entries */
+ env->fpscr &= ~FPSCR_FLAG_MASK;
+
+ if (unlikely(xcpt)) {
+ if (xcpt & float_flag_invalid) {
+ env->fpscr |= FPSCR_FLAG_V;
+ }
+ if (xcpt & float_flag_divbyzero) {
+ env->fpscr |= FPSCR_FLAG_Z;
+ }
+ if (xcpt & float_flag_overflow) {
+ env->fpscr |= FPSCR_FLAG_O;
+ }
+ if (xcpt & float_flag_underflow) {
+ env->fpscr |= FPSCR_FLAG_U;
+ }
+ if (xcpt & float_flag_inexact) {
+ env->fpscr |= FPSCR_FLAG_I;
+ }
+
+ /* Accumulate in cause entries */
+ env->fpscr |= (env->fpscr & FPSCR_FLAG_MASK)
+ << (FPSCR_CAUSE_SHIFT - FPSCR_FLAG_SHIFT);
+
+ /* Generate an exception if enabled */
+ cause = (env->fpscr & FPSCR_CAUSE_MASK) >> FPSCR_CAUSE_SHIFT;
+ enable = (env->fpscr & FPSCR_ENABLE_MASK) >> FPSCR_ENABLE_SHIFT;
+ if (cause & enable) {
+ cpu_restore_state_from_retaddr(retaddr);
+ env->exception_index = 0x120;
+ cpu_loop_exit(env);
+ }
+ }
+}
+
+float32 helper_fabs_FT(float32 t0)
+{
+ return float32_abs(t0);
+}
+
+float64 helper_fabs_DT(float64 t0)
+{
+ return float64_abs(t0);
+}
+
+float32 helper_fadd_FT(float32 t0, float32 t1)
+{
+ set_float_exception_flags(0, &env->fp_status);
+ t0 = float32_add(t0, t1, &env->fp_status);
+ update_fpscr(GETPC());
+ return t0;
+}
+
+float64 helper_fadd_DT(float64 t0, float64 t1)
+{
+ set_float_exception_flags(0, &env->fp_status);
+ t0 = float64_add(t0, t1, &env->fp_status);
+ update_fpscr(GETPC());
+ return t0;
+}
+
+void helper_fcmp_eq_FT(float32 t0, float32 t1)
+{
+ int relation;
+
+ set_float_exception_flags(0, &env->fp_status);
+ relation = float32_compare(t0, t1, &env->fp_status);
+ if (unlikely(relation == float_relation_unordered)) {
+ update_fpscr(GETPC());
+ } else if (relation == float_relation_equal) {
+ set_t();
+ } else {
+ clr_t();
+ }
+}
+
+void helper_fcmp_eq_DT(float64 t0, float64 t1)
+{
+ int relation;
+
+ set_float_exception_flags(0, &env->fp_status);
+ relation = float64_compare(t0, t1, &env->fp_status);
+ if (unlikely(relation == float_relation_unordered)) {
+ update_fpscr(GETPC());
+ } else if (relation == float_relation_equal) {
+ set_t();
+ } else {
+ clr_t();
+ }
+}
+
+void helper_fcmp_gt_FT(float32 t0, float32 t1)
+{
+ int relation;
+
+ set_float_exception_flags(0, &env->fp_status);
+ relation = float32_compare(t0, t1, &env->fp_status);
+ if (unlikely(relation == float_relation_unordered)) {
+ update_fpscr(GETPC());
+ } else if (relation == float_relation_greater) {
+ set_t();
+ } else {
+ clr_t();
+ }
+}
+
+void helper_fcmp_gt_DT(float64 t0, float64 t1)
+{
+ int relation;
+
+ set_float_exception_flags(0, &env->fp_status);
+ relation = float64_compare(t0, t1, &env->fp_status);
+ if (unlikely(relation == float_relation_unordered)) {
+ update_fpscr(GETPC());
+ } else if (relation == float_relation_greater) {
+ set_t();
+ } else {
+ clr_t();
+ }
+}
+
+float64 helper_fcnvsd_FT_DT(float32 t0)
+{
+ float64 ret;
+ set_float_exception_flags(0, &env->fp_status);
+ ret = float32_to_float64(t0, &env->fp_status);
+ update_fpscr(GETPC());
+ return ret;
+}
+
+float32 helper_fcnvds_DT_FT(float64 t0)
+{
+ float32 ret;
+ set_float_exception_flags(0, &env->fp_status);
+ ret = float64_to_float32(t0, &env->fp_status);
+ update_fpscr(GETPC());
+ return ret;
+}
+
+float32 helper_fdiv_FT(float32 t0, float32 t1)
+{
+ set_float_exception_flags(0, &env->fp_status);
+ t0 = float32_div(t0, t1, &env->fp_status);
+ update_fpscr(GETPC());
+ return t0;
+}
+
+float64 helper_fdiv_DT(float64 t0, float64 t1)
+{
+ set_float_exception_flags(0, &env->fp_status);
+ t0 = float64_div(t0, t1, &env->fp_status);
+ update_fpscr(GETPC());
+ return t0;
+}
+
+float32 helper_float_FT(uint32_t t0)
+{
+ float32 ret;
+ set_float_exception_flags(0, &env->fp_status);
+ ret = int32_to_float32(t0, &env->fp_status);
+ update_fpscr(GETPC());
+ return ret;
+}
+
+float64 helper_float_DT(uint32_t t0)
+{
+ float64 ret;
+ set_float_exception_flags(0, &env->fp_status);
+ ret = int32_to_float64(t0, &env->fp_status);
+ update_fpscr(GETPC());
+ return ret;
+}
+
+float32 helper_fmac_FT(float32 t0, float32 t1, float32 t2)
+{
+ set_float_exception_flags(0, &env->fp_status);
+ t0 = float32_mul(t0, t1, &env->fp_status);
+ t0 = float32_add(t0, t2, &env->fp_status);
+ update_fpscr(GETPC());
+ return t0;
+}
+
+float32 helper_fmul_FT(float32 t0, float32 t1)
+{
+ set_float_exception_flags(0, &env->fp_status);
+ t0 = float32_mul(t0, t1, &env->fp_status);
+ update_fpscr(GETPC());
+ return t0;
+}
+
+float64 helper_fmul_DT(float64 t0, float64 t1)
+{
+ set_float_exception_flags(0, &env->fp_status);
+ t0 = float64_mul(t0, t1, &env->fp_status);
+ update_fpscr(GETPC());
+ return t0;
+}
+
+float32 helper_fneg_T(float32 t0)
+{
+ return float32_chs(t0);
+}
+
+float32 helper_fsqrt_FT(float32 t0)
+{
+ set_float_exception_flags(0, &env->fp_status);
+ t0 = float32_sqrt(t0, &env->fp_status);
+ update_fpscr(GETPC());
+ return t0;
+}
+
+float64 helper_fsqrt_DT(float64 t0)
+{
+ set_float_exception_flags(0, &env->fp_status);
+ t0 = float64_sqrt(t0, &env->fp_status);
+ update_fpscr(GETPC());
+ return t0;
+}
+
+float32 helper_fsub_FT(float32 t0, float32 t1)
+{
+ set_float_exception_flags(0, &env->fp_status);
+ t0 = float32_sub(t0, t1, &env->fp_status);
+ update_fpscr(GETPC());
+ return t0;
+}
+
+float64 helper_fsub_DT(float64 t0, float64 t1)
+{
+ set_float_exception_flags(0, &env->fp_status);
+ t0 = float64_sub(t0, t1, &env->fp_status);
+ update_fpscr(GETPC());
+ return t0;
+}
+
+uint32_t helper_ftrc_FT(float32 t0)
+{
+ uint32_t ret;
+ set_float_exception_flags(0, &env->fp_status);
+ ret = float32_to_int32_round_to_zero(t0, &env->fp_status);
+ update_fpscr(GETPC());
+ return ret;
+}
+
+uint32_t helper_ftrc_DT(float64 t0)
+{
+ uint32_t ret;
+ set_float_exception_flags(0, &env->fp_status);
+ ret = float64_to_int32_round_to_zero(t0, &env->fp_status);
+ update_fpscr(GETPC());
+ return ret;
+}
+
+void helper_fipr(uint32_t m, uint32_t n)
+{
+ int bank, i;
+ float32 r, p;
+
+ bank = (env->sr & FPSCR_FR) ? 16 : 0;
+ r = float32_zero;
+ set_float_exception_flags(0, &env->fp_status);
+
+ for (i = 0 ; i < 4 ; i++) {
+ p = float32_mul(env->fregs[bank + m + i],
+ env->fregs[bank + n + i],
+ &env->fp_status);
+ r = float32_add(r, p, &env->fp_status);
+ }
+ update_fpscr(GETPC());
+
+ env->fregs[bank + n + 3] = r;
+}
+
+void helper_ftrv(uint32_t n)
+{
+ int bank_matrix, bank_vector;
+ int i, j;
+ float32 r[4];
+ float32 p;
+
+ bank_matrix = (env->sr & FPSCR_FR) ? 0 : 16;
+ bank_vector = (env->sr & FPSCR_FR) ? 16 : 0;
+ set_float_exception_flags(0, &env->fp_status);
+ for (i = 0 ; i < 4 ; i++) {
+ r[i] = float32_zero;
+ for (j = 0 ; j < 4 ; j++) {
+ p = float32_mul(env->fregs[bank_matrix + 4 * j + i],
+ env->fregs[bank_vector + j],
+ &env->fp_status);
+ r[i] = float32_add(r[i], p, &env->fp_status);
+ }
+ }
+ update_fpscr(GETPC());
+
+ for (i = 0 ; i < 4 ; i++) {
+ env->fregs[bank_vector + i] = r[i];
+ }
}