#if defined(TARGET_SPARC)
const float32 float32_default_nan = const_float32(0x7FFFFFFF);
#elif defined(TARGET_PPC) || defined(TARGET_ARM) || defined(TARGET_ALPHA) || \
- defined(TARGET_XTENSA) || defined(TARGET_S390X)
+ defined(TARGET_XTENSA) || defined(TARGET_S390X) || defined(TARGET_TRICORE)
const float32 float32_default_nan = const_float32(0x7FC00000);
#elif SNAN_BIT_IS_ONE
const float32 float32_default_nan = const_float32(0x7FBFFFFF);
-obj-y += translate.o helper.o cpu.o op_helper.o
+obj-y += translate.o helper.o cpu.o op_helper.o fpu_helper.o
uint32_t M2CNT;
uint32_t M3CNT;
/* Floating Point Registers */
- /* XXX: */
-
+ float_status fp_status;
/* QEMU */
int error_code;
uint32_t hflags; /* CPU State */
#define MASK_PSW_GW 0x00000100
#define MASK_PSW_CDE 0x00000080
#define MASK_PSW_CDC 0x0000007f
+#define MASK_PSW_FPU_RM 0x3000000
#define MASK_SYSCON_PRO_TEN 0x2
#define MASK_SYSCON_FCD_SF 0x1
uint32_t psw_read(CPUTriCoreState *env);
void psw_write(CPUTriCoreState *env, uint32_t val);
+void fpu_set_state(CPUTriCoreState *env);
+
#include "cpu-qom.h"
#define MMU_USER_IDX 2
--- /dev/null
+/*
+ * TriCore emulation for qemu: fpu helper.
+ *
+ * Copyright (c) 2016 Bastian Koppelmann University of 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 "exec/helper-proto.h"
+
+#define ADD_NAN 0x7cf00001
+#define DIV_NAN 0x7fc00008
+#define MUL_NAN 0x7fc00002
+#define FPU_FS PSW_USB_C
+#define FPU_FI PSW_USB_V
+#define FPU_FV PSW_USB_SV
+#define FPU_FZ PSW_USB_AV
+#define FPU_FU PSW_USB_SAV
+
+/* we don't care about input_denormal */
+static inline uint8_t f_get_excp_flags(CPUTriCoreState *env)
+{
+ return get_float_exception_flags(&env->fp_status)
+ & (float_flag_invalid
+ | float_flag_overflow
+ | float_flag_underflow
+ | float_flag_output_denormal
+ | float_flag_divbyzero
+ | float_flag_inexact);
+}
+
+static inline bool f_is_denormal(float32 arg)
+{
+ return float32_is_zero_or_denormal(arg) && !float32_is_zero(arg);
+}
+
+static void f_update_psw_flags(CPUTriCoreState *env, uint8_t flags)
+{
+ uint8_t some_excp = 0;
+ set_float_exception_flags(0, &env->fp_status);
+
+ if (flags & float_flag_invalid) {
+ env->FPU_FI = 1 << 31;
+ some_excp = 1;
+ }
+
+ if (flags & float_flag_overflow) {
+ env->FPU_FV = 1 << 31;
+ some_excp = 1;
+ }
+
+ if (flags & float_flag_underflow || flags & float_flag_output_denormal) {
+ env->FPU_FU = 1 << 31;
+ some_excp = 1;
+ }
+
+ if (flags & float_flag_divbyzero) {
+ env->FPU_FZ = 1 << 31;
+ some_excp = 1;
+ }
+
+ if (flags & float_flag_inexact || flags & float_flag_output_denormal) {
+ env->PSW |= 1 << 26;
+ some_excp = 1;
+ }
+
+ env->FPU_FS = some_excp;
+}
+
+#define FADD_SUB(op) \
+uint32_t helper_f##op(CPUTriCoreState *env, uint32_t r1, uint32_t r2) \
+{ \
+ float32 arg1 = make_float32(r1); \
+ float32 arg2 = make_float32(r2); \
+ uint32_t flags; \
+ float32 f_result; \
+ \
+ f_result = float32_##op(arg2, arg1, &env->fp_status); \
+ flags = f_get_excp_flags(env); \
+ if (flags) { \
+ /* If the output is a NaN, but the inputs aren't, \
+ we return a unique value. */ \
+ if ((flags & float_flag_invalid) \
+ && !float32_is_any_nan(arg1) \
+ && !float32_is_any_nan(arg2)) { \
+ f_result = ADD_NAN; \
+ } \
+ f_update_psw_flags(env, flags); \
+ } else { \
+ env->FPU_FS = 0; \
+ } \
+ return (uint32_t)f_result; \
+}
+FADD_SUB(add)
+FADD_SUB(sub)
+
+uint32_t helper_fmul(CPUTriCoreState *env, uint32_t r1, uint32_t r2)
+{
+ uint32_t flags;
+ float32 arg1 = make_float32(r1);
+ float32 arg2 = make_float32(r2);
+ float32 f_result;
+
+ f_result = float32_mul(arg1, arg2, &env->fp_status);
+
+ flags = f_get_excp_flags(env);
+ if (flags) {
+ /* If the output is a NaN, but the inputs aren't,
+ we return a unique value. */
+ if ((flags & float_flag_invalid)
+ && !float32_is_any_nan(arg1)
+ && !float32_is_any_nan(arg2)) {
+ f_result = MUL_NAN;
+ }
+ f_update_psw_flags(env, flags);
+ } else {
+ env->FPU_FS = 0;
+ }
+ return (uint32_t)f_result;
+
+}
+
+uint32_t helper_fdiv(CPUTriCoreState *env, uint32_t r1, uint32_t r2)
+{
+ uint32_t flags;
+ float32 arg1 = make_float32(r1);
+ float32 arg2 = make_float32(r2);
+ float32 f_result;
+
+ f_result = float32_div(arg1, arg2 , &env->fp_status);
+
+ flags = f_get_excp_flags(env);
+ if (flags) {
+ /* If the output is a NaN, but the inputs aren't,
+ we return a unique value. */
+ if ((flags & float_flag_invalid)
+ && !float32_is_any_nan(arg1)
+ && !float32_is_any_nan(arg2)) {
+ f_result = DIV_NAN;
+ }
+ f_update_psw_flags(env, flags);
+ } else {
+ env->FPU_FS = 0;
+ }
+
+ return (uint32_t)f_result;
+}
+
+uint32_t helper_fcmp(CPUTriCoreState *env, uint32_t r1, uint32_t r2)
+{
+ uint32_t result, flags;
+ float32 arg1 = make_float32(r1);
+ float32 arg2 = make_float32(r2);
+
+ set_flush_inputs_to_zero(0, &env->fp_status);
+
+ result = 1 << (float32_compare_quiet(arg1, arg2, &env->fp_status) + 1);
+ result |= f_is_denormal(arg1) << 4;
+ result |= f_is_denormal(arg2) << 5;
+
+ flags = f_get_excp_flags(env);
+ if (flags) {
+ f_update_psw_flags(env, flags);
+ } else {
+ env->FPU_FS = 0;
+ }
+
+ set_flush_inputs_to_zero(1, &env->fp_status);
+ return result;
+}
+
+uint32_t helper_ftoi(CPUTriCoreState *env, uint32_t arg)
+{
+ float32 f_arg = make_float32(arg);
+ int32_t result, flags;
+
+ result = float32_to_int32(f_arg, &env->fp_status);
+
+ flags = f_get_excp_flags(env);
+ if (flags) {
+ if (float32_is_any_nan(f_arg)) {
+ result = 0;
+ }
+ f_update_psw_flags(env, flags);
+ } else {
+ env->FPU_FS = 0;
+ }
+ return (uint32_t)result;
+}
+
+uint32_t helper_itof(CPUTriCoreState *env, uint32_t arg)
+{
+ float32 f_result;
+ uint32_t flags;
+ f_result = int32_to_float32(arg, &env->fp_status);
+
+ flags = f_get_excp_flags(env);
+ if (flags) {
+ f_update_psw_flags(env, flags);
+ } else {
+ env->FPU_FS = 0;
+ }
+ return (uint32_t)f_result;
+}
g_slist_free(list);
}
+void fpu_set_state(CPUTriCoreState *env)
+{
+ set_float_rounding_mode(env->PSW & MASK_PSW_FPU_RM, &env->fp_status);
+ set_flush_inputs_to_zero(1, &env->fp_status);
+ set_flush_to_zero(1, &env->fp_status);
+ set_default_nan_mode(1, &env->fp_status);
+}
+
uint32_t psw_read(CPUTriCoreState *env)
{
/* clear all USB bits */
- env->PSW &= 0xffffff;
+ env->PSW &= 0x6ffffff;
/* now set them from the cache */
env->PSW |= ((env->PSW_USB_C != 0) << 31);
env->PSW |= ((env->PSW_USB_V & (1 << 31)) >> 1);
env->PSW_USB_AV = (val & MASK_USB_AV) << 3;
env->PSW_USB_SAV = (val & MASK_USB_SAV) << 4;
env->PSW = val;
+
+ fpu_set_state(env);
}
/* float */
DEF_HELPER_FLAGS_4(pack, TCG_CALL_NO_RWG_SE, i32, i32, i32, i32, i32)
DEF_HELPER_1(unpack, i64, i32)
+DEF_HELPER_3(fadd, i32, env, i32, i32)
+DEF_HELPER_3(fsub, i32, env, i32, i32)
+DEF_HELPER_3(fmul, i32, env, i32, i32)
+DEF_HELPER_3(fdiv, i32, env, i32, i32)
+DEF_HELPER_3(fcmp, i32, env, i32, i32)
+DEF_HELPER_2(ftoi, i32, env, i32)
+DEF_HELPER_2(itof, i32, env, i32)
/* dvinit */
DEF_HELPER_3(dvinit_b_13, i64, env, i32, i32)
DEF_HELPER_3(dvinit_b_131, i64, env, i32, i32)
} else {
result = INT64_MIN;
}
+ } else {
+ env->PSW_USB_V = 0;
}
} else {
if (ovf < 0) {
generate_trap(ctx, TRAPC_INSN_ERR, TIN2_IOPC);
}
break;
+ case OPC2_32_RR_MUL_F:
+ gen_helper_fmul(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1], cpu_gpr_d[r2]);
+ break;
+ case OPC2_32_RR_DIV_F:
+ gen_helper_fdiv(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1], cpu_gpr_d[r2]);
+ break;
+ case OPC2_32_RR_CMP_F:
+ gen_helper_fcmp(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1], cpu_gpr_d[r2]);
+ break;
+ case OPC2_32_RR_FTOI:
+ gen_helper_ftoi(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1]);
+ break;
+ case OPC2_32_RR_ITOF:
+ gen_helper_itof(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1]);
+ break;
default:
generate_trap(ctx, TRAPC_INSN_ERR, TIN2_IOPC);
}
r3 = MASK_OP_RRR_S3(ctx->opcode);
r4 = MASK_OP_RRR_D(ctx->opcode);
- CHECK_REG_PAIR(r3);
-
switch (op2) {
case OPC2_32_RRR_DVADJ:
+ CHECK_REG_PAIR(r3);
CHECK_REG_PAIR(r4);
GEN_HELPER_RRR(dvadj, cpu_gpr_d[r4], cpu_gpr_d[r4+1], cpu_gpr_d[r3],
cpu_gpr_d[r3+1], cpu_gpr_d[r2]);
break;
case OPC2_32_RRR_DVSTEP:
+ CHECK_REG_PAIR(r3);
CHECK_REG_PAIR(r4);
GEN_HELPER_RRR(dvstep, cpu_gpr_d[r4], cpu_gpr_d[r4+1], cpu_gpr_d[r3],
cpu_gpr_d[r3+1], cpu_gpr_d[r2]);
break;
case OPC2_32_RRR_DVSTEP_U:
+ CHECK_REG_PAIR(r3);
CHECK_REG_PAIR(r4);
GEN_HELPER_RRR(dvstep_u, cpu_gpr_d[r4], cpu_gpr_d[r4+1], cpu_gpr_d[r3],
cpu_gpr_d[r3+1], cpu_gpr_d[r2]);
break;
case OPC2_32_RRR_IXMAX:
+ CHECK_REG_PAIR(r3);
CHECK_REG_PAIR(r4);
GEN_HELPER_RRR(ixmax, cpu_gpr_d[r4], cpu_gpr_d[r4+1], cpu_gpr_d[r3],
cpu_gpr_d[r3+1], cpu_gpr_d[r2]);
break;
case OPC2_32_RRR_IXMAX_U:
+ CHECK_REG_PAIR(r3);
CHECK_REG_PAIR(r4);
GEN_HELPER_RRR(ixmax_u, cpu_gpr_d[r4], cpu_gpr_d[r4+1], cpu_gpr_d[r3],
cpu_gpr_d[r3+1], cpu_gpr_d[r2]);
break;
case OPC2_32_RRR_IXMIN:
+ CHECK_REG_PAIR(r3);
CHECK_REG_PAIR(r4);
GEN_HELPER_RRR(ixmin, cpu_gpr_d[r4], cpu_gpr_d[r4+1], cpu_gpr_d[r3],
cpu_gpr_d[r3+1], cpu_gpr_d[r2]);
break;
case OPC2_32_RRR_IXMIN_U:
+ CHECK_REG_PAIR(r3);
CHECK_REG_PAIR(r4);
GEN_HELPER_RRR(ixmin_u, cpu_gpr_d[r4], cpu_gpr_d[r4+1], cpu_gpr_d[r3],
cpu_gpr_d[r3+1], cpu_gpr_d[r2]);
break;
case OPC2_32_RRR_PACK:
+ CHECK_REG_PAIR(r3);
gen_helper_pack(cpu_gpr_d[r4], cpu_PSW_C, cpu_gpr_d[r3],
cpu_gpr_d[r3+1], cpu_gpr_d[r1]);
break;
+ case OPC2_32_RRR_ADD_F:
+ gen_helper_fadd(cpu_gpr_d[r4], cpu_env, cpu_gpr_d[r1], cpu_gpr_d[r3]);
+ break;
+ case OPC2_32_RRR_SUB_F:
+ gen_helper_fsub(cpu_gpr_d[r4], cpu_env, cpu_gpr_d[r1], cpu_gpr_d[r3]);
+ break;
default:
generate_trap(ctx, TRAPC_INSN_ERR, TIN2_IOPC);
}
break;
case OPCM_32_RRR_DIVIDE:
decode_rrr_divide(env, ctx);
+ break;
/* RRR2 Format */
case OPCM_32_RRR2_MADD:
decode_rrr2_madd(env, ctx);
/* RRRR format */
case OPCM_32_RRRR_EXTRACT_INSERT:
decode_rrrr_extract_insert(env, ctx);
+ break;
/* RRRW format */
case OPCM_32_RRRW_EXTRACT_INSERT:
decode_rrrw_extract_insert(env, ctx);
{
/* Reset Regs to Default Value */
env->PSW = 0xb80;
+ fpu_set_state(env);
}
static void tricore_tcg_init_csfr(void)
OPC2_32_RR_CRC32 = 0x03,
OPC2_32_RR_DIV = 0x20,
OPC2_32_RR_DIV_U = 0x21,
+ OPC2_32_RR_MUL_F = 0x04,
+ OPC2_32_RR_DIV_F = 0x05,
+ OPC2_32_RR_FTOI = 0x10,
+ OPC2_32_RR_ITOF = 0x14,
+ OPC2_32_RR_CMP_F = 0x00,
+ OPC2_32_RR_FTOIZ = 0x13,
+ OPC2_32_RR_FTOQ31 = 0x11,
+ OPC2_32_RR_FTOQ31Z = 0x18,
+ OPC2_32_RR_FTOU = 0x12,
+ OPC2_32_RR_FTOUZ = 0x17,
+ OPC2_32_RR_Q31TOF = 0x15,
+ OPC2_32_RR_QSEED_F = 0x19,
+ OPC2_32_RR_UPDFL = 0x0c,
+ OPC2_32_RR_UTOF = 0x16,
};
/* OPCM_32_RR_IDIRECT */
enum {
OPC2_32_RRR_IXMIN = 0x08,
OPC2_32_RRR_IXMIN_U = 0x09,
OPC2_32_RRR_PACK = 0x00,
+ OPC2_32_RRR_ADD_F = 0x02,
+ OPC2_32_RRR_SUB_F = 0x03,
+ OPC2_32_RRR_MADD_F = 0x06,
+ OPC2_32_RRR_MSUB_F = 0x07,
};
/*
* RRR1 Format
projects / mirror_qemu.git / commitdiff