* 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 <stdio.h>
-#include <string.h>
-
-#include "config.h"
#include "cpu.h"
-#include "exec-all.h"
-#include "qemu-common.h"
-
-enum m68k_cpuid {
- M68K_CPUID_M5206,
- M68K_CPUID_M5208,
- M68K_CPUID_CFV4E,
- M68K_CPUID_ANY,
-};
+#include "exec/gdbstub.h"
-typedef struct m68k_def_t m68k_def_t;
+#include "helpers.h"
-struct m68k_def_t {
- const char * name;
- enum m68k_cpuid id;
-};
+#define SIGNBIT (1u << 31)
-static m68k_def_t m68k_cpu_defs[] = {
- {"m5206", M68K_CPUID_M5206},
- {"m5208", M68K_CPUID_M5208},
- {"cfv4e", M68K_CPUID_CFV4E},
- {"any", M68K_CPUID_ANY},
- {NULL, 0},
-};
+/* Sort alphabetically, except for "any". */
+static gint m68k_cpu_list_compare(gconstpointer a, gconstpointer b)
+{
+ ObjectClass *class_a = (ObjectClass *)a;
+ ObjectClass *class_b = (ObjectClass *)b;
+ const char *name_a, *name_b;
+
+ name_a = object_class_get_name(class_a);
+ name_b = object_class_get_name(class_b);
+ if (strcmp(name_a, "any-" TYPE_M68K_CPU) == 0) {
+ return 1;
+ } else if (strcmp(name_b, "any-" TYPE_M68K_CPU) == 0) {
+ return -1;
+ } else {
+ return strcasecmp(name_a, name_b);
+ }
+}
-static void m68k_set_feature(CPUM68KState *env, int feature)
+static void m68k_cpu_list_entry(gpointer data, gpointer user_data)
{
- env->features |= (1u << feature);
+ ObjectClass *c = data;
+ CPUListState *s = user_data;
+ const char *typename;
+ char *name;
+
+ typename = object_class_get_name(c);
+ name = g_strndup(typename, strlen(typename) - strlen("-" TYPE_M68K_CPU));
+ (*s->cpu_fprintf)(s->file, "%s\n",
+ name);
+ g_free(name);
}
-static int cpu_m68k_set_model(CPUM68KState *env, const char *name)
+void m68k_cpu_list(FILE *f, fprintf_function cpu_fprintf)
{
- m68k_def_t *def;
+ CPUListState s = {
+ .file = f,
+ .cpu_fprintf = cpu_fprintf,
+ };
+ GSList *list;
+
+ list = object_class_get_list(TYPE_M68K_CPU, false);
+ list = g_slist_sort(list, m68k_cpu_list_compare);
+ g_slist_foreach(list, m68k_cpu_list_entry, &s);
+ g_slist_free(list);
+}
- for (def = m68k_cpu_defs; def->name; def++) {
- if (strcmp(def->name, name) == 0)
- break;
+static int fpu_gdb_get_reg(CPUM68KState *env, uint8_t *mem_buf, int n)
+{
+ if (n < 8) {
+ stfq_p(mem_buf, env->fregs[n]);
+ return 8;
}
- if (!def->name)
- return -1;
-
- switch (def->id) {
- case M68K_CPUID_M5206:
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_A);
- break;
- case M68K_CPUID_M5208:
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_A);
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC);
- m68k_set_feature(env, M68K_FEATURE_BRAL);
- m68k_set_feature(env, M68K_FEATURE_CF_EMAC);
- m68k_set_feature(env, M68K_FEATURE_USP);
- break;
- case M68K_CPUID_CFV4E:
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_A);
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_B);
- m68k_set_feature(env, M68K_FEATURE_BRAL);
- m68k_set_feature(env, M68K_FEATURE_CF_FPU);
- m68k_set_feature(env, M68K_FEATURE_CF_EMAC);
- m68k_set_feature(env, M68K_FEATURE_USP);
- break;
- case M68K_CPUID_ANY:
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_A);
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_B);
- m68k_set_feature(env, M68K_FEATURE_CF_ISA_APLUSC);
- m68k_set_feature(env, M68K_FEATURE_BRAL);
- m68k_set_feature(env, M68K_FEATURE_CF_FPU);
- /* MAC and EMAC are mututally exclusive, so pick EMAC.
- It's mostly backwards compatible. */
- m68k_set_feature(env, M68K_FEATURE_CF_EMAC);
- m68k_set_feature(env, M68K_FEATURE_CF_EMAC_B);
- m68k_set_feature(env, M68K_FEATURE_USP);
- m68k_set_feature(env, M68K_FEATURE_EXT_FULL);
- m68k_set_feature(env, M68K_FEATURE_WORD_INDEX);
- break;
+ if (n < 11) {
+ /* FP control registers (not implemented) */
+ memset(mem_buf, 0, 4);
+ return 4;
}
-
- register_m68k_insns(env);
return 0;
}
-void cpu_reset(CPUM68KState *env)
+static int fpu_gdb_set_reg(CPUM68KState *env, uint8_t *mem_buf, int n)
{
- memset(env, 0, offsetof(CPUM68KState, breakpoints));
-#if !defined (CONFIG_USER_ONLY)
- env->sr = 0x2700;
-#endif
- m68k_switch_sp(env);
- /* ??? FP regs should be initialized to NaN. */
- env->cc_op = CC_OP_FLAGS;
- /* TODO: We should set PC from the interrupt vector. */
- env->pc = 0;
- tlb_flush(env, 1);
+ if (n < 8) {
+ env->fregs[n] = ldfq_p(mem_buf);
+ return 8;
+ }
+ if (n < 11) {
+ /* FP control registers (not implemented) */
+ return 4;
+ }
+ return 0;
}
-CPUM68KState *cpu_m68k_init(const char *cpu_model)
+M68kCPU *cpu_m68k_init(const char *cpu_model)
{
+ M68kCPU *cpu;
CPUM68KState *env;
+ ObjectClass *oc;
- env = malloc(sizeof(CPUM68KState));
- if (!env)
+ oc = cpu_class_by_name(TYPE_M68K_CPU, cpu_model);
+ if (oc == NULL) {
return NULL;
- cpu_exec_init(env);
-
+ }
+ cpu = M68K_CPU(object_new(object_class_get_name(oc)));
+ env = &cpu->env;
env->cpu_model_str = cpu_model;
- if (cpu_m68k_set_model(env, cpu_model) < 0) {
- cpu_m68k_close(env);
- return NULL;
- }
+ register_m68k_insns(env);
+
+ object_property_set_bool(OBJECT(cpu), true, "realized", NULL);
- cpu_reset(env);
- return env;
+ return cpu;
}
-void cpu_m68k_close(CPUM68KState *env)
+void m68k_cpu_init_gdb(M68kCPU *cpu)
{
- qemu_free(env);
+ CPUM68KState *env = &cpu->env;
+
+ if (m68k_feature(env, M68K_FEATURE_CF_FPU)) {
+ gdb_register_coprocessor(env, fpu_gdb_get_reg, fpu_gdb_set_reg,
+ 11, "cf-fp.xml", 18);
+ }
+ /* TODO: Add [E]MAC registers. */
}
void cpu_m68k_flush_flags(CPUM68KState *env, int cc_op)
if (HIGHBIT & (tmp ^ dest) & (tmp ^ src))
flags |= CCF_V;
break;
- case CC_OP_SHL:
- if (src >= 32) {
- SET_NZ(0);
- } else {
- tmp = dest << src;
- SET_NZ(tmp);
- }
- if (src && src <= 32 && (dest & (1 << (32 - src))))
- flags |= CCF_C;
- break;
- case CC_OP_SHR:
- if (src >= 32) {
- SET_NZ(0);
- } else {
- tmp = dest >> src;
- SET_NZ(tmp);
- }
- if (src && src <= 32 && ((dest >> (src - 1)) & 1))
- flags |= CCF_C;
- break;
- case CC_OP_SAR:
- if (src >= 32) {
- SET_NZ(-1);
- } else {
- tmp = (int32_t)dest >> src;
- SET_NZ(tmp);
- }
- if (src && src <= 32 && (((int32_t)dest >> (src - 1)) & 1))
+ case CC_OP_SHIFT:
+ SET_NZ(dest);
+ if (src)
flags |= CCF_C;
break;
default:
env->cc_dest = flags;
}
-float64 helper_sub_cmpf64(CPUM68KState *env, float64 src0, float64 src1)
-{
- /* ??? This may incorrectly raise exceptions. */
- /* ??? Should flush denormals to zero. */
- float64 res;
- res = float64_sub(src0, src1, &env->fp_status);
- if (float64_is_nan(res)) {
- /* +/-inf compares equal against itself, but sub returns nan. */
- if (!float64_is_nan(src0)
- && !float64_is_nan(src1)) {
- res = float64_zero;
- if (float64_lt_quiet(src0, res, &env->fp_status))
- res = float64_chs(res);
- }
- }
- return res;
-}
-
-void helper_movec(CPUM68KState *env, int reg, uint32_t val)
+void HELPER(movec)(CPUM68KState *env, uint32_t reg, uint32_t val)
{
switch (reg) {
case 0x02: /* CACR */
}
}
-void m68k_set_macsr(CPUM68KState *env, uint32_t val)
+void HELPER(set_macsr)(CPUM68KState *env, uint32_t val)
{
uint32_t acc;
int8_t exthigh;
env->current_sp = new_sp;
}
-/* MMU */
-
-/* TODO: This will need fixing once the MMU is implemented. */
-target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr)
-{
- return addr;
-}
-
#if defined(CONFIG_USER_ONLY)
-int cpu_m68k_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
- int mmu_idx, int is_softmmu)
+int cpu_m68k_handle_mmu_fault (CPUM68KState *env, target_ulong address, int rw,
+ int mmu_idx)
{
env->exception_index = EXCP_ACCESS;
env->mmu.ar = address;
#else
-int cpu_m68k_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
- int mmu_idx, int is_softmmu)
+/* MMU */
+
+/* TODO: This will need fixing once the MMU is implemented. */
+hwaddr cpu_get_phys_page_debug(CPUM68KState *env, target_ulong addr)
+{
+ return addr;
+}
+
+int cpu_m68k_handle_mmu_fault (CPUM68KState *env, target_ulong address, int rw,
+ int mmu_idx)
{
int prot;
address &= TARGET_PAGE_MASK;
- prot = PAGE_READ | PAGE_WRITE;
- return tlb_set_page(env, address, address, prot, mmu_idx, is_softmmu);
+ prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
+ tlb_set_page(env, address, address, prot, mmu_idx, TARGET_PAGE_SIZE);
+ return 0;
}
/* Notify CPU of a pending interrupt. Prioritization and vectoring should
be handled by the interrupt controller. Real hardware only requests
the vector when the interrupt is acknowledged by the CPU. For
simplicitly we calculate it when the interrupt is signalled. */
-void m68k_set_irq_level(CPUM68KState *env, int level, uint8_t vector)
+void m68k_set_irq_level(M68kCPU *cpu, int level, uint8_t vector)
{
+ CPUState *cs = CPU(cpu);
+ CPUM68KState *env = &cpu->env;
+
env->pending_level = level;
env->pending_vector = vector;
- if (level)
- cpu_interrupt(env, CPU_INTERRUPT_HARD);
- else
- cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
+ if (level) {
+ cpu_interrupt(cs, CPU_INTERRUPT_HARD);
+ } else {
+ cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
+ }
}
#endif
+
+uint32_t HELPER(bitrev)(uint32_t x)
+{
+ x = ((x >> 1) & 0x55555555u) | ((x << 1) & 0xaaaaaaaau);
+ x = ((x >> 2) & 0x33333333u) | ((x << 2) & 0xccccccccu);
+ x = ((x >> 4) & 0x0f0f0f0fu) | ((x << 4) & 0xf0f0f0f0u);
+ return bswap32(x);
+}
+
+uint32_t HELPER(ff1)(uint32_t x)
+{
+ int n;
+ for (n = 32; x; n--)
+ x >>= 1;
+ return n;
+}
+
+uint32_t HELPER(sats)(uint32_t val, uint32_t ccr)
+{
+ /* The result has the opposite sign to the original value. */
+ if (ccr & CCF_V)
+ val = (((int32_t)val) >> 31) ^ SIGNBIT;
+ return val;
+}
+
+uint32_t HELPER(subx_cc)(CPUM68KState *env, uint32_t op1, uint32_t op2)
+{
+ uint32_t res;
+ uint32_t old_flags;
+
+ old_flags = env->cc_dest;
+ if (env->cc_x) {
+ env->cc_x = (op1 <= op2);
+ env->cc_op = CC_OP_SUBX;
+ res = op1 - (op2 + 1);
+ } else {
+ env->cc_x = (op1 < op2);
+ env->cc_op = CC_OP_SUB;
+ res = op1 - op2;
+ }
+ env->cc_dest = res;
+ env->cc_src = op2;
+ cpu_m68k_flush_flags(env, env->cc_op);
+ /* !Z is sticky. */
+ env->cc_dest &= (old_flags | ~CCF_Z);
+ return res;
+}
+
+uint32_t HELPER(addx_cc)(CPUM68KState *env, uint32_t op1, uint32_t op2)
+{
+ uint32_t res;
+ uint32_t old_flags;
+
+ old_flags = env->cc_dest;
+ if (env->cc_x) {
+ res = op1 + op2 + 1;
+ env->cc_x = (res <= op2);
+ env->cc_op = CC_OP_ADDX;
+ } else {
+ res = op1 + op2;
+ env->cc_x = (res < op2);
+ env->cc_op = CC_OP_ADD;
+ }
+ env->cc_dest = res;
+ env->cc_src = op2;
+ cpu_m68k_flush_flags(env, env->cc_op);
+ /* !Z is sticky. */
+ env->cc_dest &= (old_flags | ~CCF_Z);
+ return res;
+}
+
+uint32_t HELPER(xflag_lt)(uint32_t a, uint32_t b)
+{
+ return a < b;
+}
+
+void HELPER(set_sr)(CPUM68KState *env, uint32_t val)
+{
+ env->sr = val & 0xffff;
+ m68k_switch_sp(env);
+}
+
+uint32_t HELPER(shl_cc)(CPUM68KState *env, uint32_t val, uint32_t shift)
+{
+ uint32_t result;
+ uint32_t cf;
+
+ shift &= 63;
+ if (shift == 0) {
+ result = val;
+ cf = env->cc_src & CCF_C;
+ } else if (shift < 32) {
+ result = val << shift;
+ cf = (val >> (32 - shift)) & 1;
+ } else if (shift == 32) {
+ result = 0;
+ cf = val & 1;
+ } else /* shift > 32 */ {
+ result = 0;
+ cf = 0;
+ }
+ env->cc_src = cf;
+ env->cc_x = (cf != 0);
+ env->cc_dest = result;
+ return result;
+}
+
+uint32_t HELPER(shr_cc)(CPUM68KState *env, uint32_t val, uint32_t shift)
+{
+ uint32_t result;
+ uint32_t cf;
+
+ shift &= 63;
+ if (shift == 0) {
+ result = val;
+ cf = env->cc_src & CCF_C;
+ } else if (shift < 32) {
+ result = val >> shift;
+ cf = (val >> (shift - 1)) & 1;
+ } else if (shift == 32) {
+ result = 0;
+ cf = val >> 31;
+ } else /* shift > 32 */ {
+ result = 0;
+ cf = 0;
+ }
+ env->cc_src = cf;
+ env->cc_x = (cf != 0);
+ env->cc_dest = result;
+ return result;
+}
+
+uint32_t HELPER(sar_cc)(CPUM68KState *env, uint32_t val, uint32_t shift)
+{
+ uint32_t result;
+ uint32_t cf;
+
+ shift &= 63;
+ if (shift == 0) {
+ result = val;
+ cf = (env->cc_src & CCF_C) != 0;
+ } else if (shift < 32) {
+ result = (int32_t)val >> shift;
+ cf = (val >> (shift - 1)) & 1;
+ } else /* shift >= 32 */ {
+ result = (int32_t)val >> 31;
+ cf = val >> 31;
+ }
+ env->cc_src = cf;
+ env->cc_x = cf;
+ env->cc_dest = result;
+ return result;
+}
+
+/* FPU helpers. */
+uint32_t HELPER(f64_to_i32)(CPUM68KState *env, float64 val)
+{
+ return float64_to_int32(val, &env->fp_status);
+}
+
+float32 HELPER(f64_to_f32)(CPUM68KState *env, float64 val)
+{
+ return float64_to_float32(val, &env->fp_status);
+}
+
+float64 HELPER(i32_to_f64)(CPUM68KState *env, uint32_t val)
+{
+ return int32_to_float64(val, &env->fp_status);
+}
+
+float64 HELPER(f32_to_f64)(CPUM68KState *env, float32 val)
+{
+ return float32_to_float64(val, &env->fp_status);
+}
+
+float64 HELPER(iround_f64)(CPUM68KState *env, float64 val)
+{
+ return float64_round_to_int(val, &env->fp_status);
+}
+
+float64 HELPER(itrunc_f64)(CPUM68KState *env, float64 val)
+{
+ return float64_trunc_to_int(val, &env->fp_status);
+}
+
+float64 HELPER(sqrt_f64)(CPUM68KState *env, float64 val)
+{
+ return float64_sqrt(val, &env->fp_status);
+}
+
+float64 HELPER(abs_f64)(float64 val)
+{
+ return float64_abs(val);
+}
+
+float64 HELPER(chs_f64)(float64 val)
+{
+ return float64_chs(val);
+}
+
+float64 HELPER(add_f64)(CPUM68KState *env, float64 a, float64 b)
+{
+ return float64_add(a, b, &env->fp_status);
+}
+
+float64 HELPER(sub_f64)(CPUM68KState *env, float64 a, float64 b)
+{
+ return float64_sub(a, b, &env->fp_status);
+}
+
+float64 HELPER(mul_f64)(CPUM68KState *env, float64 a, float64 b)
+{
+ return float64_mul(a, b, &env->fp_status);
+}
+
+float64 HELPER(div_f64)(CPUM68KState *env, float64 a, float64 b)
+{
+ return float64_div(a, b, &env->fp_status);
+}
+
+float64 HELPER(sub_cmp_f64)(CPUM68KState *env, float64 a, float64 b)
+{
+ /* ??? This may incorrectly raise exceptions. */
+ /* ??? Should flush denormals to zero. */
+ float64 res;
+ res = float64_sub(a, b, &env->fp_status);
+ if (float64_is_quiet_nan(res)) {
+ /* +/-inf compares equal against itself, but sub returns nan. */
+ if (!float64_is_quiet_nan(a)
+ && !float64_is_quiet_nan(b)) {
+ res = float64_zero;
+ if (float64_lt_quiet(a, res, &env->fp_status))
+ res = float64_chs(res);
+ }
+ }
+ return res;
+}
+
+uint32_t HELPER(compare_f64)(CPUM68KState *env, float64 val)
+{
+ return float64_compare_quiet(val, float64_zero, &env->fp_status);
+}
+
+/* MAC unit. */
+/* FIXME: The MAC unit implementation is a bit of a mess. Some helpers
+ take values, others take register numbers and manipulate the contents
+ in-place. */
+void HELPER(mac_move)(CPUM68KState *env, uint32_t dest, uint32_t src)
+{
+ uint32_t mask;
+ env->macc[dest] = env->macc[src];
+ mask = MACSR_PAV0 << dest;
+ if (env->macsr & (MACSR_PAV0 << src))
+ env->macsr |= mask;
+ else
+ env->macsr &= ~mask;
+}
+
+uint64_t HELPER(macmuls)(CPUM68KState *env, uint32_t op1, uint32_t op2)
+{
+ int64_t product;
+ int64_t res;
+
+ product = (uint64_t)op1 * op2;
+ res = (product << 24) >> 24;
+ if (res != product) {
+ env->macsr |= MACSR_V;
+ if (env->macsr & MACSR_OMC) {
+ /* Make sure the accumulate operation overflows. */
+ if (product < 0)
+ res = ~(1ll << 50);
+ else
+ res = 1ll << 50;
+ }
+ }
+ return res;
+}
+
+uint64_t HELPER(macmulu)(CPUM68KState *env, uint32_t op1, uint32_t op2)
+{
+ uint64_t product;
+
+ product = (uint64_t)op1 * op2;
+ if (product & (0xffffffull << 40)) {
+ env->macsr |= MACSR_V;
+ if (env->macsr & MACSR_OMC) {
+ /* Make sure the accumulate operation overflows. */
+ product = 1ll << 50;
+ } else {
+ product &= ((1ull << 40) - 1);
+ }
+ }
+ return product;
+}
+
+uint64_t HELPER(macmulf)(CPUM68KState *env, uint32_t op1, uint32_t op2)
+{
+ uint64_t product;
+ uint32_t remainder;
+
+ product = (uint64_t)op1 * op2;
+ if (env->macsr & MACSR_RT) {
+ remainder = product & 0xffffff;
+ product >>= 24;
+ if (remainder > 0x800000)
+ product++;
+ else if (remainder == 0x800000)
+ product += (product & 1);
+ } else {
+ product >>= 24;
+ }
+ return product;
+}
+
+void HELPER(macsats)(CPUM68KState *env, uint32_t acc)
+{
+ int64_t tmp;
+ int64_t result;
+ tmp = env->macc[acc];
+ result = ((tmp << 16) >> 16);
+ if (result != tmp) {
+ env->macsr |= MACSR_V;
+ }
+ if (env->macsr & MACSR_V) {
+ env->macsr |= MACSR_PAV0 << acc;
+ if (env->macsr & MACSR_OMC) {
+ /* The result is saturated to 32 bits, despite overflow occurring
+ at 48 bits. Seems weird, but that's what the hardware docs
+ say. */
+ result = (result >> 63) ^ 0x7fffffff;
+ }
+ }
+ env->macc[acc] = result;
+}
+
+void HELPER(macsatu)(CPUM68KState *env, uint32_t acc)
+{
+ uint64_t val;
+
+ val = env->macc[acc];
+ if (val & (0xffffull << 48)) {
+ env->macsr |= MACSR_V;
+ }
+ if (env->macsr & MACSR_V) {
+ env->macsr |= MACSR_PAV0 << acc;
+ if (env->macsr & MACSR_OMC) {
+ if (val > (1ull << 53))
+ val = 0;
+ else
+ val = (1ull << 48) - 1;
+ } else {
+ val &= ((1ull << 48) - 1);
+ }
+ }
+ env->macc[acc] = val;
+}
+
+void HELPER(macsatf)(CPUM68KState *env, uint32_t acc)
+{
+ int64_t sum;
+ int64_t result;
+
+ sum = env->macc[acc];
+ result = (sum << 16) >> 16;
+ if (result != sum) {
+ env->macsr |= MACSR_V;
+ }
+ if (env->macsr & MACSR_V) {
+ env->macsr |= MACSR_PAV0 << acc;
+ if (env->macsr & MACSR_OMC) {
+ result = (result >> 63) ^ 0x7fffffffffffll;
+ }
+ }
+ env->macc[acc] = result;
+}
+
+void HELPER(mac_set_flags)(CPUM68KState *env, uint32_t acc)
+{
+ uint64_t val;
+ val = env->macc[acc];
+ if (val == 0) {
+ env->macsr |= MACSR_Z;
+ } else if (val & (1ull << 47)) {
+ env->macsr |= MACSR_N;
+ }
+ if (env->macsr & (MACSR_PAV0 << acc)) {
+ env->macsr |= MACSR_V;
+ }
+ if (env->macsr & MACSR_FI) {
+ val = ((int64_t)val) >> 40;
+ if (val != 0 && val != -1)
+ env->macsr |= MACSR_EV;
+ } else if (env->macsr & MACSR_SU) {
+ val = ((int64_t)val) >> 32;
+ if (val != 0 && val != -1)
+ env->macsr |= MACSR_EV;
+ } else {
+ if ((val >> 32) != 0)
+ env->macsr |= MACSR_EV;
+ }
+}
+
+void HELPER(flush_flags)(CPUM68KState *env, uint32_t cc_op)
+{
+ cpu_m68k_flush_flags(env, cc_op);
+}
+
+uint32_t HELPER(get_macf)(CPUM68KState *env, uint64_t val)
+{
+ int rem;
+ uint32_t result;
+
+ if (env->macsr & MACSR_SU) {
+ /* 16-bit rounding. */
+ rem = val & 0xffffff;
+ val = (val >> 24) & 0xffffu;
+ if (rem > 0x800000)
+ val++;
+ else if (rem == 0x800000)
+ val += (val & 1);
+ } else if (env->macsr & MACSR_RT) {
+ /* 32-bit rounding. */
+ rem = val & 0xff;
+ val >>= 8;
+ if (rem > 0x80)
+ val++;
+ else if (rem == 0x80)
+ val += (val & 1);
+ } else {
+ /* No rounding. */
+ val >>= 8;
+ }
+ if (env->macsr & MACSR_OMC) {
+ /* Saturate. */
+ if (env->macsr & MACSR_SU) {
+ if (val != (uint16_t) val) {
+ result = ((val >> 63) ^ 0x7fff) & 0xffff;
+ } else {
+ result = val & 0xffff;
+ }
+ } else {
+ if (val != (uint32_t)val) {
+ result = ((uint32_t)(val >> 63) & 0x7fffffff);
+ } else {
+ result = (uint32_t)val;
+ }
+ }
+ } else {
+ /* No saturation. */
+ if (env->macsr & MACSR_SU) {
+ result = val & 0xffff;
+ } else {
+ result = (uint32_t)val;
+ }
+ }
+ return result;
+}
+
+uint32_t HELPER(get_macs)(uint64_t val)
+{
+ if (val == (int32_t)val) {
+ return (int32_t)val;
+ } else {
+ return (val >> 61) ^ ~SIGNBIT;
+ }
+}
+
+uint32_t HELPER(get_macu)(uint64_t val)
+{
+ if ((val >> 32) == 0) {
+ return (uint32_t)val;
+ } else {
+ return 0xffffffffu;
+ }
+}
+
+uint32_t HELPER(get_mac_extf)(CPUM68KState *env, uint32_t acc)
+{
+ uint32_t val;
+ val = env->macc[acc] & 0x00ff;
+ val = (env->macc[acc] >> 32) & 0xff00;
+ val |= (env->macc[acc + 1] << 16) & 0x00ff0000;
+ val |= (env->macc[acc + 1] >> 16) & 0xff000000;
+ return val;
+}
+
+uint32_t HELPER(get_mac_exti)(CPUM68KState *env, uint32_t acc)
+{
+ uint32_t val;
+ val = (env->macc[acc] >> 32) & 0xffff;
+ val |= (env->macc[acc + 1] >> 16) & 0xffff0000;
+ return val;
+}
+
+void HELPER(set_mac_extf)(CPUM68KState *env, uint32_t val, uint32_t acc)
+{
+ int64_t res;
+ int32_t tmp;
+ res = env->macc[acc] & 0xffffffff00ull;
+ tmp = (int16_t)(val & 0xff00);
+ res |= ((int64_t)tmp) << 32;
+ res |= val & 0xff;
+ env->macc[acc] = res;
+ res = env->macc[acc + 1] & 0xffffffff00ull;
+ tmp = (val & 0xff000000);
+ res |= ((int64_t)tmp) << 16;
+ res |= (val >> 16) & 0xff;
+ env->macc[acc + 1] = res;
+}
+
+void HELPER(set_mac_exts)(CPUM68KState *env, uint32_t val, uint32_t acc)
+{
+ int64_t res;
+ int32_t tmp;
+ res = (uint32_t)env->macc[acc];
+ tmp = (int16_t)val;
+ res |= ((int64_t)tmp) << 32;
+ env->macc[acc] = res;
+ res = (uint32_t)env->macc[acc + 1];
+ tmp = val & 0xffff0000;
+ res |= (int64_t)tmp << 16;
+ env->macc[acc + 1] = res;
+}
+
+void HELPER(set_mac_extu)(CPUM68KState *env, uint32_t val, uint32_t acc)
+{
+ uint64_t res;
+ res = (uint32_t)env->macc[acc];
+ res |= ((uint64_t)(val & 0xffff)) << 32;
+ env->macc[acc] = res;
+ res = (uint32_t)env->macc[acc + 1];
+ res |= (uint64_t)(val & 0xffff0000) << 16;
+ env->macc[acc + 1] = res;
+}
projects / qemu.git / blobdiff