DEF_HELPER_1(load_6xx_tlbi, void, tl)
DEF_HELPER_1(load_74xx_tlbd, void, tl)
DEF_HELPER_1(load_74xx_tlbi, void, tl)
+
+DEF_HELPER_1(602_mfrom, tl, tl)
#endif
#include "def-helper.h"
}
#endif
-/* PowerPC 602 specific instruction */
-#if !defined(CONFIG_USER_ONLY)
-void OPPROTO op_602_mfrom (void)
-{
- do_op_602_mfrom();
- RETURN();
-}
-#endif
-
/* PowerPC 4xx specific micro-ops */
void OPPROTO op_load_dcr (void)
{
/* mfrom is the most crazy instruction ever seen, imho ! */
/* Real implementation uses a ROM table. Do the same */
#define USE_MFROM_ROM_TABLE
-void do_op_602_mfrom (void)
+target_ulong helper_602_mfrom (target_ulong arg)
{
- if (likely(T0 < 602)) {
+ if (likely(arg < 602)) {
#if defined(USE_MFROM_ROM_TABLE)
#include "mfrom_table.c"
- T0 = mfrom_ROM_table[T0];
+ return mfrom_ROM_table[T0];
#else
double d;
/* Extremly decomposed:
- * -T0 / 256
- * T0 = 256 * log10(10 + 1.0) + 0.5
+ * -arg / 256
+ * return 256 * log10(10 + 1.0) + 0.5
*/
- d = T0;
+ d = arg;
d = float64_div(d, 256, &env->fp_status);
d = float64_chs(d);
d = exp10(d); // XXX: use float emulation function
d = log10(d); // XXX: use float emulation function
d = float64_mul(d, 256, &env->fp_status);
d = float64_add(d, 0.5, &env->fp_status);
- T0 = float64_round_to_int(d, &env->fp_status);
+ return float64_round_to_int(d, &env->fp_status);
#endif
} else {
- T0 = 0;
+ return 0;
}
}
GEN_EXCP_PRIVOPC(ctx);
return;
}
- tcg_gen_mov_tl(cpu_T[0], cpu_gpr[rA(ctx->opcode)]);
- gen_op_602_mfrom();
- tcg_gen_mov_tl(cpu_gpr[rD(ctx->opcode)], cpu_T[0]);
+ gen_helper_602_mfrom(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)]);
#endif
}