Initial import of qemu-2.4.1HEADmaster

1 files changed, 497 insertions, 0 deletions

diff --git a/target-sh4/op_helper.c b/target-sh4/op_helper.c
new file mode 100644
index 00000000..cbc11aec
--- /dev/null
+++ b/target-sh4/op_helper.c
@@ -0,0 +1,497 @@
+/*
+ *  SH4 emulation
+ *
+ *  Copyright (c) 2005 Samuel Tardieu
+ *
+ * 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 <assert.h>
+#include <stdlib.h>
+#include "cpu.h"
+#include "exec/helper-proto.h"
+#include "exec/cpu_ldst.h"
+
+#ifndef CONFIG_USER_ONLY
+
+void tlb_fill(CPUState *cs, target_ulong addr, int is_write, int mmu_idx,
+              uintptr_t retaddr)
+{
+    int ret;
+
+    ret = superh_cpu_handle_mmu_fault(cs, addr, is_write, mmu_idx);
+    if (ret) {
+        /* now we have a real cpu fault */
+        if (retaddr) {
+            cpu_restore_state(cs, retaddr);
+        }
+        cpu_loop_exit(cs);
+    }
+}
+
+#endif
+
+void helper_ldtlb(CPUSH4State *env)
+{
+#ifdef CONFIG_USER_ONLY
+    SuperHCPU *cpu = sh_env_get_cpu(env);
+
+    /* XXXXX */
+    cpu_abort(CPU(cpu), "Unhandled ldtlb");
+#else
+    cpu_load_tlb(env);
+#endif
+}
+
+static inline void QEMU_NORETURN raise_exception(CPUSH4State *env, int index,
+                                                 uintptr_t retaddr)
+{
+    CPUState *cs = CPU(sh_env_get_cpu(env));
+
+    cs->exception_index = index;
+    if (retaddr) {
+        cpu_restore_state(cs, retaddr);
+    }
+    cpu_loop_exit(cs);
+}
+
+void helper_raise_illegal_instruction(CPUSH4State *env)
+{
+    raise_exception(env, 0x180, 0);
+}
+
+void helper_raise_slot_illegal_instruction(CPUSH4State *env)
+{
+    raise_exception(env, 0x1a0, 0);
+}
+
+void helper_raise_fpu_disable(CPUSH4State *env)
+{
+    raise_exception(env, 0x800, 0);
+}
+
+void helper_raise_slot_fpu_disable(CPUSH4State *env)
+{
+    raise_exception(env, 0x820, 0);
+}
+
+void helper_debug(CPUSH4State *env)
+{
+    raise_exception(env, EXCP_DEBUG, 0);
+}
+
+void helper_sleep(CPUSH4State *env)
+{
+    CPUState *cs = CPU(sh_env_get_cpu(env));
+
+    cs->halted = 1;
+    env->in_sleep = 1;
+    raise_exception(env, EXCP_HLT, 0);
+}
+
+void helper_trapa(CPUSH4State *env, uint32_t tra)
+{
+    env->tra = tra << 2;
+    raise_exception(env, 0x160, 0);
+}
+
+void helper_movcal(CPUSH4State *env, 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(CPUSH4State *env)
+{
+    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(CPUSH4State *env, 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;
+            cpu_stl_data(env, a, (*current)->value);
+	    
+	    if (next == NULL)
+	    {
+		env->movcal_backup_tail = current;
+	    }
+
+	    free (*current);
+	    *current = next;
+	    break;
+	}
+    }
+}
+
+void helper_macl(CPUSH4State *env, uint32_t arg0, uint32_t arg1)
+{
+    int64_t res;
+
+    res = ((uint64_t) env->mach << 32) | env->macl;
+    res += (int64_t) (int32_t) arg0 *(int64_t) (int32_t) arg1;
+    env->mach = (res >> 32) & 0xffffffff;
+    env->macl = res & 0xffffffff;
+    if (env->sr & (1u << SR_S)) {
+	if (res < 0)
+	    env->mach |= 0xffff0000;
+	else
+	    env->mach &= 0x00007fff;
+    }
+}
+
+void helper_macw(CPUSH4State *env, uint32_t arg0, uint32_t arg1)
+{
+    int64_t res;
+
+    res = ((uint64_t) env->mach << 32) | env->macl;
+    res += (int64_t) (int16_t) arg0 *(int64_t) (int16_t) arg1;
+    env->mach = (res >> 32) & 0xffffffff;
+    env->macl = res & 0xffffffff;
+    if (env->sr & (1u << SR_S)) {
+	if (res < -0x80000000) {
+	    env->mach = 1;
+	    env->macl = 0x80000000;
+	} else if (res > 0x000000007fffffff) {
+	    env->mach = 1;
+	    env->macl = 0x7fffffff;
+	}
+    }
+}
+
+void helper_ld_fpscr(CPUSH4State *env, uint32_t val)
+{
+    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);
+}
+
+static void update_fpscr(CPUSH4State *env, uintptr_t 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) {
+            raise_exception(env, 0x120, retaddr);
+        }
+    }
+}
+
+float32 helper_fabs_FT(float32 t0)
+{
+    return float32_abs(t0);
+}
+
+float64 helper_fabs_DT(float64 t0)
+{
+    return float64_abs(t0);
+}
+
+float32 helper_fadd_FT(CPUSH4State *env, float32 t0, float32 t1)
+{
+    set_float_exception_flags(0, &env->fp_status);
+    t0 = float32_add(t0, t1, &env->fp_status);
+    update_fpscr(env, GETPC());
+    return t0;
+}
+
+float64 helper_fadd_DT(CPUSH4State *env, float64 t0, float64 t1)
+{
+    set_float_exception_flags(0, &env->fp_status);
+    t0 = float64_add(t0, t1, &env->fp_status);
+    update_fpscr(env, GETPC());
+    return t0;
+}
+
+void helper_fcmp_eq_FT(CPUSH4State *env, 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(env, GETPC());
+    } else {
+        env->sr_t = (relation == float_relation_equal);
+    }
+}
+
+void helper_fcmp_eq_DT(CPUSH4State *env, 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(env, GETPC());
+    } else {
+        env->sr_t = (relation == float_relation_equal);
+    }
+}
+
+void helper_fcmp_gt_FT(CPUSH4State *env, 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(env, GETPC());
+    } else {
+        env->sr_t = (relation == float_relation_greater);
+    }
+}
+
+void helper_fcmp_gt_DT(CPUSH4State *env, 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(env, GETPC());
+    } else {
+        env->sr_t = (relation == float_relation_greater);
+    }
+}
+
+float64 helper_fcnvsd_FT_DT(CPUSH4State *env, float32 t0)
+{
+    float64 ret;
+    set_float_exception_flags(0, &env->fp_status);
+    ret = float32_to_float64(t0, &env->fp_status);
+    update_fpscr(env, GETPC());
+    return ret;
+}
+
+float32 helper_fcnvds_DT_FT(CPUSH4State *env, float64 t0)
+{
+    float32 ret;
+    set_float_exception_flags(0, &env->fp_status);
+    ret = float64_to_float32(t0, &env->fp_status);
+    update_fpscr(env, GETPC());
+    return ret;
+}
+
+float32 helper_fdiv_FT(CPUSH4State *env, float32 t0, float32 t1)
+{
+    set_float_exception_flags(0, &env->fp_status);
+    t0 = float32_div(t0, t1, &env->fp_status);
+    update_fpscr(env, GETPC());
+    return t0;
+}
+
+float64 helper_fdiv_DT(CPUSH4State *env, float64 t0, float64 t1)
+{
+    set_float_exception_flags(0, &env->fp_status);
+    t0 = float64_div(t0, t1, &env->fp_status);
+    update_fpscr(env, GETPC());
+    return t0;
+}
+
+float32 helper_float_FT(CPUSH4State *env, uint32_t t0)
+{
+    float32 ret;
+    set_float_exception_flags(0, &env->fp_status);
+    ret = int32_to_float32(t0, &env->fp_status);
+    update_fpscr(env, GETPC());
+    return ret;
+}
+
+float64 helper_float_DT(CPUSH4State *env, uint32_t t0)
+{
+    float64 ret;
+    set_float_exception_flags(0, &env->fp_status);
+    ret = int32_to_float64(t0, &env->fp_status);
+    update_fpscr(env, GETPC());
+    return ret;
+}
+
+float32 helper_fmac_FT(CPUSH4State *env, float32 t0, float32 t1, float32 t2)
+{
+    set_float_exception_flags(0, &env->fp_status);
+    t0 = float32_muladd(t0, t1, t2, 0, &env->fp_status);
+    update_fpscr(env, GETPC());
+    return t0;
+}
+
+float32 helper_fmul_FT(CPUSH4State *env, float32 t0, float32 t1)
+{
+    set_float_exception_flags(0, &env->fp_status);
+    t0 = float32_mul(t0, t1, &env->fp_status);
+    update_fpscr(env, GETPC());
+    return t0;
+}
+
+float64 helper_fmul_DT(CPUSH4State *env, float64 t0, float64 t1)
+{
+    set_float_exception_flags(0, &env->fp_status);
+    t0 = float64_mul(t0, t1, &env->fp_status);
+    update_fpscr(env, GETPC());
+    return t0;
+}
+
+float32 helper_fneg_T(float32 t0)
+{
+    return float32_chs(t0);
+}
+
+float32 helper_fsqrt_FT(CPUSH4State *env, float32 t0)
+{
+    set_float_exception_flags(0, &env->fp_status);
+    t0 = float32_sqrt(t0, &env->fp_status);
+    update_fpscr(env, GETPC());
+    return t0;
+}
+
+float64 helper_fsqrt_DT(CPUSH4State *env, float64 t0)
+{
+    set_float_exception_flags(0, &env->fp_status);
+    t0 = float64_sqrt(t0, &env->fp_status);
+    update_fpscr(env, GETPC());
+    return t0;
+}
+
+float32 helper_fsub_FT(CPUSH4State *env, float32 t0, float32 t1)
+{
+    set_float_exception_flags(0, &env->fp_status);
+    t0 = float32_sub(t0, t1, &env->fp_status);
+    update_fpscr(env, GETPC());
+    return t0;
+}
+
+float64 helper_fsub_DT(CPUSH4State *env, float64 t0, float64 t1)
+{
+    set_float_exception_flags(0, &env->fp_status);
+    t0 = float64_sub(t0, t1, &env->fp_status);
+    update_fpscr(env, GETPC());
+    return t0;
+}
+
+uint32_t helper_ftrc_FT(CPUSH4State *env, 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(env, GETPC());
+    return ret;
+}
+
+uint32_t helper_ftrc_DT(CPUSH4State *env, 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(env, GETPC());
+    return ret;
+}
+
+void helper_fipr(CPUSH4State *env, 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(env, GETPC());
+
+    env->fregs[bank + n + 3] = r;
+}
+
+void helper_ftrv(CPUSH4State *env, 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(env, GETPC());
+
+    for (i = 0 ; i < 4 ; i++) {
+        env->fregs[bank_vector + i] = r[i];
+    }
+}