/* * PowerPC emulation helpers for qemu. * * Copyright (c) 2003-2007 Jocelyn Mayer * * 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, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "exec.h" #include "op_helper.h" #define MEMSUFFIX _raw #include "op_helper.h" #include "op_helper_mem.h" #if !defined(CONFIG_USER_ONLY) #define MEMSUFFIX _user #include "op_helper.h" #include "op_helper_mem.h" #define MEMSUFFIX _kernel #include "op_helper.h" #include "op_helper_mem.h" #endif //#define DEBUG_OP //#define DEBUG_EXCEPTIONS //#define DEBUG_SOFTWARE_TLB //#define FLUSH_ALL_TLBS /*****************************************************************************/ /* Exceptions processing helpers */ void cpu_loop_exit (void) { longjmp(env->jmp_env, 1); } void do_raise_exception_err (uint32_t exception, int error_code) { #if 0 printf("Raise exception %3x code : %d\n", exception, error_code); #endif switch (exception) { case EXCP_PROGRAM: if (error_code == EXCP_FP && msr_fe0 == 0 && msr_fe1 == 0) return; break; default: break; } env->exception_index = exception; env->error_code = error_code; cpu_loop_exit(); } void do_raise_exception (uint32_t exception) { do_raise_exception_err(exception, 0); } void cpu_dump_EA (target_ulong EA); void do_print_mem_EA (target_ulong EA) { cpu_dump_EA(EA); } /*****************************************************************************/ /* Registers load and stores */ void do_load_cr (void) { T0 = (env->crf[0] << 28) | (env->crf[1] << 24) | (env->crf[2] << 20) | (env->crf[3] << 16) | (env->crf[4] << 12) | (env->crf[5] << 8) | (env->crf[6] << 4) | (env->crf[7] << 0); } void do_store_cr (uint32_t mask) { int i, sh; for (i = 0, sh = 7; i < 8; i++, sh --) { if (mask & (1 << sh)) env->crf[i] = (T0 >> (sh * 4)) & 0xFUL; } } void do_load_xer (void) { T0 = (xer_so << XER_SO) | (xer_ov << XER_OV) | (xer_ca << XER_CA) | (xer_bc << XER_BC) | (xer_cmp << XER_CMP); } void do_store_xer (void) { xer_so = (T0 >> XER_SO) & 0x01; xer_ov = (T0 >> XER_OV) & 0x01; xer_ca = (T0 >> XER_CA) & 0x01; xer_cmp = (T0 >> XER_CMP) & 0xFF; xer_bc = (T0 >> XER_BC) & 0x7F; } void do_load_fpscr (void) { /* The 32 MSB of the target fpr are undefined. * They'll be zero... */ union { float64 d; struct { uint32_t u[2]; } s; } u; int i; #if defined(WORDS_BIGENDIAN) #define WORD0 0 #define WORD1 1 #else #define WORD0 1 #define WORD1 0 #endif u.s.u[WORD0] = 0; u.s.u[WORD1] = 0; for (i = 0; i < 8; i++) u.s.u[WORD1] |= env->fpscr[i] << (4 * i); FT0 = u.d; } void do_store_fpscr (uint32_t mask) { /* * We use only the 32 LSB of the incoming fpr */ union { double d; struct { uint32_t u[2]; } s; } u; int i, rnd_type; u.d = FT0; if (mask & 0x80) env->fpscr[0] = (env->fpscr[0] & 0x9) | ((u.s.u[WORD1] >> 28) & ~0x9); for (i = 1; i < 7; i++) { if (mask & (1 << (7 - i))) env->fpscr[i] = (u.s.u[WORD1] >> (4 * (7 - i))) & 0xF; } /* TODO: update FEX & VX */ /* Set rounding mode */ switch (env->fpscr[0] & 0x3) { case 0: /* Best approximation (round to nearest) */ rnd_type = float_round_nearest_even; break; case 1: /* Smaller magnitude (round toward zero) */ rnd_type = float_round_to_zero; break; case 2: /* Round toward +infinite */ rnd_type = float_round_up; break; default: case 3: /* Round toward -infinite */ rnd_type = float_round_down; break; } set_float_rounding_mode(rnd_type, &env->fp_status); } target_ulong ppc_load_dump_spr (int sprn) { if (loglevel) { fprintf(logfile, "Read SPR %d %03x => " ADDRX "\n", sprn, sprn, env->spr[sprn]); } return env->spr[sprn]; } void ppc_store_dump_spr (int sprn, target_ulong val) { if (loglevel) { fprintf(logfile, "Write SPR %d %03x => " ADDRX " <= " ADDRX "\n", sprn, sprn, env->spr[sprn], val); } env->spr[sprn] = val; } /*****************************************************************************/ /* Fixed point operations helpers */ #if defined(TARGET_PPC64) static void add128 (uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b) { *plow += a; /* carry test */ if (*plow < a) (*phigh)++; *phigh += b; } static void neg128 (uint64_t *plow, uint64_t *phigh) { *plow = ~ *plow; *phigh = ~ *phigh; add128(plow, phigh, 1, 0); } static void mul64 (uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b) { uint32_t a0, a1, b0, b1; uint64_t v; a0 = a; a1 = a >> 32; b0 = b; b1 = b >> 32; v = (uint64_t)a0 * (uint64_t)b0; *plow = v; *phigh = 0; v = (uint64_t)a0 * (uint64_t)b1; add128(plow, phigh, v << 32, v >> 32); v = (uint64_t)a1 * (uint64_t)b0; add128(plow, phigh, v << 32, v >> 32); v = (uint64_t)a1 * (uint64_t)b1; *phigh += v; #if defined(DEBUG_MULDIV) printf("mul: 0x%016llx * 0x%016llx = 0x%016llx%016llx\n", a, b, *phigh, *plow); #endif } void do_mul64 (uint64_t *plow, uint64_t *phigh) { mul64(plow, phigh, T0, T1); } static void imul64 (uint64_t *plow, uint64_t *phigh, int64_t a, int64_t b) { int sa, sb; sa = (a < 0); if (sa) a = -a; sb = (b < 0); if (sb) b = -b; mul64(plow, phigh, a, b); if (sa ^ sb) { neg128(plow, phigh); } } void do_imul64 (uint64_t *plow, uint64_t *phigh) { imul64(plow, phigh, T0, T1); } #endif void do_adde (void) { T2 = T0; T0 += T1 + xer_ca; if (likely(!((uint32_t)T0 < (uint32_t)T2 || (xer_ca == 1 && (uint32_t)T0 == (uint32_t)T2)))) { xer_ca = 0; } else { xer_ca = 1; } } #if defined(TARGET_PPC64) void do_adde_64 (void) { T2 = T0; T0 += T1 + xer_ca; if (likely(!((uint64_t)T0 < (uint64_t)T2 || (xer_ca == 1 && (uint64_t)T0 == (uint64_t)T2)))) { xer_ca = 0; } else { xer_ca = 1; } } #endif void do_addmeo (void) { T1 = T0; T0 += xer_ca + (-1); if (likely(!((uint32_t)T1 & ((uint32_t)T1 ^ (uint32_t)T0) & (1UL << 31)))) { xer_ov = 0; } else { xer_so = 1; xer_ov = 1; } if (likely(T1 != 0)) xer_ca = 1; } #if defined(TARGET_PPC64) void do_addmeo_64 (void) { T1 = T0; T0 += xer_ca + (-1); if (likely(!((uint64_t)T1 & ((uint64_t)T1 ^ (uint64_t)T0) & (1ULL << 63)))) { xer_ov = 0; } else { xer_so = 1; xer_ov = 1; } if (likely(T1 != 0)) xer_ca = 1; } #endif void do_divwo (void) { if (likely(!(((int32_t)T0 == INT32_MIN && (int32_t)T1 == -1) || (int32_t)T1 == 0))) { xer_ov = 0; T0 = (int32_t)T0 / (int32_t)T1; } else { xer_so = 1; xer_ov = 1; T0 = (-1) * ((uint32_t)T0 >> 31); } } #if defined(TARGET_PPC64) void do_divdo (void) { if (likely(!(((int64_t)T0 == INT64_MIN && (int64_t)T1 == -1ULL) || (int64_t)T1 == 0))) { xer_ov = 0; T0 = (int64_t)T0 / (int64_t)T1; } else { xer_so = 1; xer_ov = 1; T0 = (-1ULL) * ((uint64_t)T0 >> 63); } } #endif void do_divwuo (void) { if (likely((uint32_t)T1 != 0)) { xer_ov = 0; T0 = (uint32_t)T0 / (uint32_t)T1; } else { xer_so = 1; xer_ov = 1; T0 = 0; } } #if defined(TARGET_PPC64) void do_divduo (void) { if (likely((uint64_t)T1 != 0)) { xer_ov = 0; T0 = (uint64_t)T0 / (uint64_t)T1; } else { xer_so = 1; xer_ov = 1; T0 = 0; } } #endif void do_mullwo (void) { int64_t res = (int64_t)T0 * (int64_t)T1; if (likely((int32_t)res == res)) { xer_ov = 0; } else { xer_ov = 1; xer_so = 1; } T0 = (int32_t)res; } #if defined(TARGET_PPC64) void do_mulldo (void) { int64_t th; uint64_t tl; do_imul64(&tl, &th); if (likely(th == 0)) { xer_ov = 0; } else { xer_ov = 1; xer_so = 1; } T0 = (int64_t)tl; } #endif void do_nego (void) { if (likely((int32_t)T0 != INT32_MIN)) { xer_ov = 0; T0 = -(int32_t)T0; } else { xer_ov = 1; xer_so = 1; } } #if defined(TARGET_PPC64) void do_nego_64 (void) { if (likely((int64_t)T0 != INT64_MIN)) { xer_ov = 0; T0 = -(int64_t)T0; } else { xer_ov = 1; xer_so = 1; } } #endif void do_subfe (void) { T0 = T1 + ~T0 + xer_ca; if (likely((uint32_t)T0 >= (uint32_t)T1 && (xer_ca == 0 || (uint32_t)T0 != (uint32_t)T1))) { xer_ca = 0; } else { xer_ca = 1; } } #if defined(TARGET_PPC64) void do_subfe_64 (void) { T0 = T1 + ~T0 + xer_ca; if (likely((uint64_t)T0 >= (uint64_t)T1 && (xer_ca == 0 || (uint64_t)T0 != (uint64_t)T1))) { xer_ca = 0; } else { xer_ca = 1; } } #endif void do_subfmeo (void) { T1 = T0; T0 = ~T0 + xer_ca - 1; if (likely(!((uint32_t)~T1 & ((uint32_t)~T1 ^ (uint32_t)T0) & (1UL << 31)))) { xer_ov = 0; } else { xer_so = 1; xer_ov = 1; } if (likely((uint32_t)T1 != UINT32_MAX)) xer_ca = 1; } #if defined(TARGET_PPC64) void do_subfmeo_64 (void) { T1 = T0; T0 = ~T0 + xer_ca - 1; if (likely(!((uint64_t)~T1 & ((uint64_t)~T1 ^ (uint64_t)T0) & (1ULL << 63)))) { xer_ov = 0; } else { xer_so = 1; xer_ov = 1; } if (likely((uint64_t)T1 != UINT64_MAX)) xer_ca = 1; } #endif void do_subfzeo (void) { T1 = T0; T0 = ~T0 + xer_ca; if (likely(!(((uint32_t)~T1 ^ UINT32_MAX) & ((uint32_t)(~T1) ^ (uint32_t)T0) & (1UL << 31)))) { xer_ov = 0; } else { xer_ov = 1; xer_so = 1; } if (likely((uint32_t)T0 >= (uint32_t)~T1)) { xer_ca = 0; } else { xer_ca = 1; } } #if defined(TARGET_PPC64) void do_subfzeo_64 (void) { T1 = T0; T0 = ~T0 + xer_ca; if (likely(!(((uint64_t)~T1 ^ UINT64_MAX) & ((uint64_t)(~T1) ^ (uint64_t)T0) & (1ULL << 63)))) { xer_ov = 0; } else { xer_ov = 1; xer_so = 1; } if (likely((uint64_t)T0 >= (uint64_t)~T1)) { xer_ca = 0; } else { xer_ca = 1; } } #endif /* shift right arithmetic helper */ void do_sraw (void) { int32_t ret; if (likely(!(T1 & 0x20UL))) { if (likely((uint32_t)T1 != 0)) { ret = (int32_t)T0 >> (T1 & 0x1fUL); if (likely(ret >= 0 || ((int32_t)T0 & ((1 << T1) - 1)) == 0)) { xer_ca = 0; } else { xer_ca = 1; } } else { ret = T0; xer_ca = 0; } } else { ret = (-1) * ((uint32_t)T0 >> 31); if (likely(ret >= 0 || ((uint32_t)T0 & ~0x80000000UL) == 0)) { xer_ca = 0; } else { xer_ca = 1; } } T0 = ret; } #if defined(TARGET_PPC64) void do_srad (void) { int64_t ret; if (likely(!(T1 & 0x40UL))) { if (likely((uint64_t)T1 != 0)) { ret = (int64_t)T0 >> (T1 & 0x3FUL); if (likely(ret >= 0 || ((int64_t)T0 & ((1 << T1) - 1)) == 0)) { xer_ca = 0; } else { xer_ca = 1; } } else { ret = T0; xer_ca = 0; } } else { ret = (-1) * ((uint64_t)T0 >> 63); if (likely(ret >= 0 || ((uint64_t)T0 & ~0x8000000000000000ULL) == 0)) { xer_ca = 0; } else { xer_ca = 1; } } T0 = ret; } #endif static inline int popcnt (uint32_t val) { int i; for (i = 0; val != 0;) val = val ^ (val - 1); return i; } void do_popcntb (void) { uint32_t ret; int i; ret = 0; for (i = 0; i < 32; i += 8) ret |= popcnt((T0 >> i) & 0xFF) << i; T0 = ret; } #if defined(TARGET_PPC64) void do_popcntb_64 (void) { uint64_t ret; int i; ret = 0; for (i = 0; i < 64; i += 8) ret |= popcnt((T0 >> i) & 0xFF) << i; T0 = ret; } #endif /*****************************************************************************/ /* Floating point operations helpers */ void do_fctiw (void) { union { double d; uint64_t i; } p; p.i = float64_to_int32(FT0, &env->fp_status); #if USE_PRECISE_EMULATION /* XXX: higher bits are not supposed to be significant. * to make tests easier, return the same as a real PowerPC 750 (aka G3) */ p.i |= 0xFFF80000ULL << 32; #endif FT0 = p.d; } void do_fctiwz (void) { union { double d; uint64_t i; } p; p.i = float64_to_int32_round_to_zero(FT0, &env->fp_status); #if USE_PRECISE_EMULATION /* XXX: higher bits are not supposed to be significant. * to make tests easier, return the same as a real PowerPC 750 (aka G3) */ p.i |= 0xFFF80000ULL << 32; #endif FT0 = p.d; } #if defined(TARGET_PPC64) void do_fcfid (void) { union { double d; uint64_t i; } p; p.d = FT0; FT0 = int64_to_float64(p.i, &env->fp_status); } void do_fctid (void) { union { double d; uint64_t i; } p; p.i = float64_to_int64(FT0, &env->fp_status); FT0 = p.d; } void do_fctidz (void) { union { double d; uint64_t i; } p; p.i = float64_to_int64_round_to_zero(FT0, &env->fp_status); FT0 = p.d; } #endif #if USE_PRECISE_EMULATION void do_fmadd (void) { #ifdef FLOAT128 float128 ft0_128, ft1_128; ft0_128 = float64_to_float128(FT0, &env->fp_status); ft1_128 = float64_to_float128(FT1, &env->fp_status); ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status); ft1_128 = float64_to_float128(FT2, &env->fp_status); ft0_128 = float128_add(ft0_128, ft1_128, &env->fp_status); FT0 = float128_to_float64(ft0_128, &env->fp_status); #else /* This is OK on x86 hosts */ FT0 = (FT0 * FT1) + FT2; #endif } void do_fmsub (void) { #ifdef FLOAT128 float128 ft0_128, ft1_128; ft0_128 = float64_to_float128(FT0, &env->fp_status); ft1_128 = float64_to_float128(FT1, &env->fp_status); ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status); ft1_128 = float64_to_float128(FT2, &env->fp_status); ft0_128 = float128_sub(ft0_128, ft1_128, &env->fp_status); FT0 = float128_to_float64(ft0_128, &env->fp_status); #else /* This is OK on x86 hosts */ FT0 = (FT0 * FT1) - FT2; #endif } #endif /* USE_PRECISE_EMULATION */ void do_fnmadd (void) { #if USE_PRECISE_EMULATION #ifdef FLOAT128 float128 ft0_128, ft1_128; ft0_128 = float64_to_float128(FT0, &env->fp_status); ft1_128 = float64_to_float128(FT1, &env->fp_status); ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status); ft1_128 = float64_to_float128(FT2, &env->fp_status); ft0_128 = float128_add(ft0_128, ft1_128, &env->fp_status); FT0 = float128_to_float64(ft0_128, &env->fp_status); #else /* This is OK on x86 hosts */ FT0 = (FT0 * FT1) + FT2; #endif #else FT0 = float64_mul(FT0, FT1, &env->fp_status); FT0 = float64_add(FT0, FT2, &env->fp_status); #endif if (likely(!isnan(FT0))) FT0 = float64_chs(FT0); } void do_fnmsub (void) { #if USE_PRECISE_EMULATION #ifdef FLOAT128 float128 ft0_128, ft1_128; ft0_128 = float64_to_float128(FT0, &env->fp_status); ft1_128 = float64_to_float128(FT1, &env->fp_status); ft0_128 = float128_mul(ft0_128, ft1_128, &env->fp_status); ft1_128 = float64_to_float128(FT2, &env->fp_status); ft0_128 = float128_sub(ft0_128, ft1_128, &env->fp_status); FT0 = float128_to_float64(ft0_128, &env->fp_status); #else /* This is OK on x86 hosts */ FT0 = (FT0 * FT1) - FT2; #endif #else FT0 = float64_mul(FT0, FT1, &env->fp_status); FT0 = float64_sub(FT0, FT2, &env->fp_status); #endif if (likely(!isnan(FT0))) FT0 = float64_chs(FT0); } void do_fsqrt (void) { FT0 = float64_sqrt(FT0, &env->fp_status); } void do_fres (void) { union { double d; uint64_t i; } p; if (likely(isnormal(FT0))) { #if USE_PRECISE_EMULATION FT0 = float64_div(1.0, FT0, &env->fp_status); FT0 = float64_to_float32(FT0, &env->fp_status); #else FT0 = float32_div(1.0, FT0, &env->fp_status); #endif } else { p.d = FT0; if (p.i == 0x8000000000000000ULL) { p.i = 0xFFF0000000000000ULL; } else if (p.i == 0x0000000000000000ULL) { p.i = 0x7FF0000000000000ULL; } else if (isnan(FT0)) { p.i = 0x7FF8000000000000ULL; } else if (FT0 < 0.0) { p.i = 0x8000000000000000ULL; } else { p.i = 0x0000000000000000ULL; } FT0 = p.d; } } void do_frsqrte (void) { union { double d; uint64_t i; } p; if (likely(isnormal(FT0) && FT0 > 0.0)) { FT0 = float64_sqrt(FT0, &env->fp_status); FT0 = float32_div(1.0, FT0, &env->fp_status); } else { p.d = FT0; if (p.i == 0x8000000000000000ULL) { p.i = 0xFFF0000000000000ULL; } else if (p.i == 0x0000000000000000ULL) { p.i = 0x7FF0000000000000ULL; } else if (isnan(FT0)) { if (!(p.i & 0x0008000000000000ULL)) p.i |= 0x000FFFFFFFFFFFFFULL; } else if (FT0 < 0) { p.i = 0x7FF8000000000000ULL; } else { p.i = 0x0000000000000000ULL; } FT0 = p.d; } } void do_fsel (void) { if (FT0 >= 0) FT0 = FT1; else FT0 = FT2; } void do_fcmpu (void) { if (likely(!isnan(FT0) && !isnan(FT1))) { if (float64_lt(FT0, FT1, &env->fp_status)) { T0 = 0x08UL; } else if (!float64_le(FT0, FT1, &env->fp_status)) { T0 = 0x04UL; } else { T0 = 0x02UL; } } else { T0 = 0x01UL; env->fpscr[4] |= 0x1; env->fpscr[6] |= 0x1; } env->fpscr[3] = T0; } void do_fcmpo (void) { env->fpscr[4] &= ~0x1; if (likely(!isnan(FT0) && !isnan(FT1))) { if (float64_lt(FT0, FT1, &env->fp_status)) { T0 = 0x08UL; } else if (!float64_le(FT0, FT1, &env->fp_status)) { T0 = 0x04UL; } else { T0 = 0x02UL; } } else { T0 = 0x01UL; env->fpscr[4] |= 0x1; if (!float64_is_signaling_nan(FT0) || !float64_is_signaling_nan(FT1)) { /* Quiet NaN case */ env->fpscr[6] |= 0x1; if (!(env->fpscr[1] & 0x8)) env->fpscr[4] |= 0x8; } else { env->fpscr[4] |= 0x8; } } env->fpscr[3] = T0; } #if !defined (CONFIG_USER_ONLY) void do_rfi (void) { #if defined(TARGET_PPC64) if (env->spr[SPR_SRR1] & (1ULL << MSR_SF)) { env->nip = (uint64_t)(env->spr[SPR_SRR0] & ~0x00000003); do_store_msr(env, (uint64_t)(env->spr[SPR_SRR1] & ~0xFFFF0000UL)); } else { env->nip = (uint32_t)(env->spr[SPR_SRR0] & ~0x00000003); ppc_store_msr_32(env, (uint32_t)(env->spr[SPR_SRR1] & ~0xFFFF0000UL)); } #else env->nip = (uint32_t)(env->spr[SPR_SRR0] & ~0x00000003); do_store_msr(env, (uint32_t)(env->spr[SPR_SRR1] & ~0xFFFF0000UL)); #endif #if defined (DEBUG_OP) dump_rfi(); #endif env->interrupt_request |= CPU_INTERRUPT_EXITTB; } #if defined(TARGET_PPC64) void do_rfid (void) { if (env->spr[SPR_SRR1] & (1ULL << MSR_SF)) { env->nip = (uint64_t)(env->spr[SPR_SRR0] & ~0x00000003); do_store_msr(env, (uint64_t)(env->spr[SPR_SRR1] & ~0xFFFF0000UL)); } else { env->nip = (uint32_t)(env->spr[SPR_SRR0] & ~0x00000003); do_store_msr(env, (uint32_t)(env->spr[SPR_SRR1] & ~0xFFFF0000UL)); } #if defined (DEBUG_OP) dump_rfi(); #endif env->interrupt_request |= CPU_INTERRUPT_EXITTB; } #endif #endif void do_tw (int flags) { if (!likely(!(((int32_t)T0 < (int32_t)T1 && (flags & 0x10)) || ((int32_t)T0 > (int32_t)T1 && (flags & 0x08)) || ((int32_t)T0 == (int32_t)T1 && (flags & 0x04)) || ((uint32_t)T0 < (uint32_t)T1 && (flags & 0x02)) || ((uint32_t)T0 > (uint32_t)T1 && (flags & 0x01))))) { do_raise_exception_err(EXCP_PROGRAM, EXCP_TRAP); } } #if defined(TARGET_PPC64) void do_td (int flags) { if (!likely(!(((int64_t)T0 < (int64_t)T1 && (flags & 0x10)) || ((int64_t)T0 > (int64_t)T1 && (flags & 0x08)) || ((int64_t)T0 == (int64_t)T1 && (flags & 0x04)) || ((uint64_t)T0 < (uint64_t)T1 && (flags & 0x02)) || ((uint64_t)T0 > (uint64_t)T1 && (flags & 0x01))))) do_raise_exception_err(EXCP_PROGRAM, EXCP_TRAP); } #endif /*****************************************************************************/ /* PowerPC 601 specific instructions (POWER bridge) */ void do_POWER_abso (void) { if ((uint32_t)T0 == INT32_MIN) { T0 = INT32_MAX; xer_ov = 1; xer_so = 1; } else { T0 = -T0; xer_ov = 0; } } void do_POWER_clcs (void) { switch (T0) { case 0x0CUL: /* Instruction cache line size */ T0 = ICACHE_LINE_SIZE; break; case 0x0DUL: /* Data cache line size */ T0 = DCACHE_LINE_SIZE; break; case 0x0EUL: /* Minimum cache line size */ T0 = ICACHE_LINE_SIZE < DCACHE_LINE_SIZE ? ICACHE_LINE_SIZE : DCACHE_LINE_SIZE; break; case 0x0FUL: /* Maximum cache line size */ T0 = ICACHE_LINE_SIZE > DCACHE_LINE_SIZE ? ICACHE_LINE_SIZE : DCACHE_LINE_SIZE; break; default: /* Undefined */ break; } } void do_POWER_div (void) { uint64_t tmp; if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == -1) || (int32_t)T1 == 0) { T0 = (long)((-1) * (T0 >> 31)); env->spr[SPR_MQ] = 0; } else { tmp = ((uint64_t)T0 << 32) | env->spr[SPR_MQ]; env->spr[SPR_MQ] = tmp % T1; T0 = tmp / (int32_t)T1; } } void do_POWER_divo (void) { int64_t tmp; if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == -1) || (int32_t)T1 == 0) { T0 = (long)((-1) * (T0 >> 31)); env->spr[SPR_MQ] = 0; xer_ov = 1; xer_so = 1; } else { tmp = ((uint64_t)T0 << 32) | env->spr[SPR_MQ]; env->spr[SPR_MQ] = tmp % T1; tmp /= (int32_t)T1; if (tmp > (int64_t)INT32_MAX || tmp < (int64_t)INT32_MIN) { xer_ov = 1; xer_so = 1; } else { xer_ov = 0; } T0 = tmp; } } void do_POWER_divs (void) { if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == -1) || (int32_t)T1 == 0) { T0 = (long)((-1) * (T0 >> 31)); env->spr[SPR_MQ] = 0; } else { env->spr[SPR_MQ] = T0 % T1; T0 = (int32_t)T0 / (int32_t)T1; } } void do_POWER_divso (void) { if (((int32_t)T0 == INT32_MIN && (int32_t)T1 == -1) || (int32_t)T1 == 0) { T0 = (long)((-1) * (T0 >> 31)); env->spr[SPR_MQ] = 0; xer_ov = 1; xer_so = 1; } else { T0 = (int32_t)T0 / (int32_t)T1; env->spr[SPR_MQ] = (int32_t)T0 % (int32_t)T1; xer_ov = 0; } } void do_POWER_dozo (void) { if ((int32_t)T1 > (int32_t)T0) { T2 = T0; T0 = T1 - T0; if (((uint32_t)(~T2) ^ (uint32_t)T1 ^ UINT32_MAX) & ((uint32_t)(~T2) ^ (uint32_t)T0) & (1UL << 31)) { xer_so = 1; xer_ov = 1; } else { xer_ov = 0; } } else { T0 = 0; xer_ov = 0; } } void do_POWER_maskg (void) { uint32_t ret; if ((uint32_t)T0 == (uint32_t)(T1 + 1)) { ret = -1; } else { ret = (((uint32_t)(-1)) >> ((uint32_t)T0)) ^ (((uint32_t)(-1) >> ((uint32_t)T1)) >> 1); if ((uint32_t)T0 > (uint32_t)T1) ret = ~ret; } T0 = ret; } void do_POWER_mulo (void) { uint64_t tmp; tmp = (uint64_t)T0 * (uint64_t)T1; env->spr[SPR_MQ] = tmp >> 32; T0 = tmp; if (tmp >> 32 != ((uint64_t)T0 >> 16) * ((uint64_t)T1 >> 16)) { xer_ov = 1; xer_so = 1; } else { xer_ov = 0; } } #if !defined (CONFIG_USER_ONLY) void do_POWER_rac (void) { #if 0 mmu_ctx_t ctx; /* We don't have to generate many instances of this instruction, * as rac is supervisor only. */ if (get_physical_address(env, &ctx, T0, 0, ACCESS_INT, 1) == 0) T0 = ctx.raddr; #endif } void do_POWER_rfsvc (void) { env->nip = env->lr & ~0x00000003UL; T0 = env->ctr & 0x0000FFFFUL; do_store_msr(env, T0); #if defined (DEBUG_OP) dump_rfi(); #endif env->interrupt_request |= CPU_INTERRUPT_EXITTB; } /* PowerPC 601 BAT management helper */ void do_store_601_batu (int nr) { do_store_ibatu(env, nr, (uint32_t)T0); env->DBAT[0][nr] = env->IBAT[0][nr]; env->DBAT[1][nr] = env->IBAT[1][nr]; } #endif /*****************************************************************************/ /* 602 specific instructions */ /* 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) { if (likely(T0 < 602)) { #if defined(USE_MFROM_ROM_TABLE) #include "mfrom_table.c" T0 = mfrom_ROM_table[T0]; #else double d; /* Extremly decomposed: * -T0 / 256 * T0 = 256 * log10(10 + 1.0) + 0.5 */ d = T0; d = float64_div(d, 256, &env->fp_status); d = float64_chs(d); d = exp10(d); // XXX: use float emulation function d = float64_add(d, 1.0, &env->fp_status); 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); #endif } else { T0 = 0; } } /*****************************************************************************/ /* Embedded PowerPC specific helpers */ void do_405_check_ov (void) { if (likely((((uint32_t)T1 ^ (uint32_t)T2) >> 31) || !(((uint32_t)T0 ^ (uint32_t)T2) >> 31))) { xer_ov = 0; } else { xer_ov = 1; xer_so = 1; } } void do_405_check_sat (void) { if (!likely((((uint32_t)T1 ^ (uint32_t)T2) >> 31) || !(((uint32_t)T0 ^ (uint32_t)T2) >> 31))) { /* Saturate result */ if (T2 >> 31) { T0 = INT32_MIN; } else { T0 = INT32_MAX; } } } #if !defined(CONFIG_USER_ONLY) void do_40x_rfci (void) { env->nip = env->spr[SPR_40x_SRR2]; do_store_msr(env, env->spr[SPR_40x_SRR3] & ~0xFFFF0000); #if defined (DEBUG_OP) dump_rfi(); #endif env->interrupt_request = CPU_INTERRUPT_EXITTB; } void do_rfci (void) { #if defined(TARGET_PPC64) if (env->spr[SPR_BOOKE_CSRR1] & (1 << MSR_CM)) { env->nip = (uint64_t)env->spr[SPR_BOOKE_CSRR0]; } else #endif { env->nip = (uint32_t)env->spr[SPR_BOOKE_CSRR0]; } do_store_msr(env, (uint32_t)env->spr[SPR_BOOKE_CSRR1] & ~0x3FFF0000); #if defined (DEBUG_OP) dump_rfi(); #endif env->interrupt_request = CPU_INTERRUPT_EXITTB; } void do_rfdi (void) { #if defined(TARGET_PPC64) if (env->spr[SPR_BOOKE_DSRR1] & (1 << MSR_CM)) { env->nip = (uint64_t)env->spr[SPR_BOOKE_DSRR0]; } else #endif { env->nip = (uint32_t)env->spr[SPR_BOOKE_DSRR0]; } do_store_msr(env, (uint32_t)env->spr[SPR_BOOKE_DSRR1] & ~0x3FFF0000); #if defined (DEBUG_OP) dump_rfi(); #endif env->interrupt_request = CPU_INTERRUPT_EXITTB; } void do_rfmci (void) { #if defined(TARGET_PPC64) if (env->spr[SPR_BOOKE_MCSRR1] & (1 << MSR_CM)) { env->nip = (uint64_t)env->spr[SPR_BOOKE_MCSRR0]; } else #endif { env->nip = (uint32_t)env->spr[SPR_BOOKE_MCSRR0]; } do_store_msr(env, (uint32_t)env->spr[SPR_BOOKE_MCSRR1] & ~0x3FFF0000); #if defined (DEBUG_OP) dump_rfi(); #endif env->interrupt_request = CPU_INTERRUPT_EXITTB; } void do_load_dcr (void) { target_ulong val; if (unlikely(env->dcr_env == NULL)) { if (loglevel) { fprintf(logfile, "No DCR environment\n"); } do_raise_exception_err(EXCP_PROGRAM, EXCP_INVAL | EXCP_INVAL_INVAL); } else if (unlikely(ppc_dcr_read(env->dcr_env, T0, &val) != 0)) { if (loglevel) { fprintf(logfile, "DCR read error %d %03x\n", (int)T0, (int)T0); } do_raise_exception_err(EXCP_PROGRAM, EXCP_INVAL | EXCP_PRIV_REG); } else { T0 = val; } } void do_store_dcr (void) { if (unlikely(env->dcr_env == NULL)) { if (loglevel) { fprintf(logfile, "No DCR environment\n"); } do_raise_exception_err(EXCP_PROGRAM, EXCP_INVAL | EXCP_INVAL_INVAL); } else if (unlikely(ppc_dcr_write(env->dcr_env, T0, T1) != 0)) { if (loglevel) { fprintf(logfile, "DCR write error %d %03x\n", (int)T0, (int)T0); } do_raise_exception_err(EXCP_PROGRAM, EXCP_INVAL | EXCP_PRIV_REG); } } void do_load_403_pb (int num) { T0 = env->pb[num]; } void do_store_403_pb (int num) { if (likely(env->pb[num] != T0)) { env->pb[num] = T0; /* Should be optimized */ tlb_flush(env, 1); } } #endif /* 440 specific */ void do_440_dlmzb (void) { target_ulong mask; int i; i = 1; for (mask = 0xFF000000; mask != 0; mask = mask >> 8) { if ((T0 & mask) == 0) goto done; i++; } for (mask = 0xFF000000; mask != 0; mask = mask >> 8) { if ((T1 & mask) == 0) break; i++; } done: T0 = i; } #if defined(TARGET_PPCSPE) /* SPE extension helpers */ /* Use a table to make this quicker */ static uint8_t hbrev[16] = { 0x0, 0x8, 0x4, 0xC, 0x2, 0xA, 0x6, 0xE, 0x1, 0x9, 0x5, 0xD, 0x3, 0xB, 0x7, 0xF, }; static inline uint8_t byte_reverse (uint8_t val) { return hbrev[val >> 4] | (hbrev[val & 0xF] << 4); } static inline uint32_t word_reverse (uint32_t val) { return byte_reverse(val >> 24) | (byte_reverse(val >> 16) << 8) | (byte_reverse(val >> 8) << 16) | (byte_reverse(val) << 24); } #define MASKBITS 16 // Random value - to be fixed void do_brinc (void) { uint32_t a, b, d, mask; mask = (uint32_t)(-1UL) >> MASKBITS; b = T1_64 & mask; a = T0_64 & mask; d = word_reverse(1 + word_reverse(a | ~mask)); T0_64 = (T0_64 & ~mask) | (d & mask); } #define DO_SPE_OP2(name) \ void do_ev##name (void) \ { \ T0_64 = ((uint64_t)_do_e##name(T0_64 >> 32, T1_64 >> 32) << 32) | \ (uint64_t)_do_e##name(T0_64, T1_64); \ } #define DO_SPE_OP1(name) \ void do_ev##name (void) \ { \ T0_64 = ((uint64_t)_do_e##name(T0_64 >> 32) << 32) | \ (uint64_t)_do_e##name(T0_64); \ } /* Fixed-point vector arithmetic */ static inline uint32_t _do_eabs (uint32_t val) { if (val != 0x80000000) val &= ~0x80000000; return val; } static inline uint32_t _do_eaddw (uint32_t op1, uint32_t op2) { return op1 + op2; } static inline int _do_ecntlsw (uint32_t val) { if (val & 0x80000000) return _do_cntlzw(~val); else return _do_cntlzw(val); } static inline int _do_ecntlzw (uint32_t val) { return _do_cntlzw(val); } static inline uint32_t _do_eneg (uint32_t val) { if (val != 0x80000000) val ^= 0x80000000; return val; } static inline uint32_t _do_erlw (uint32_t op1, uint32_t op2) { return rotl32(op1, op2); } static inline uint32_t _do_erndw (uint32_t val) { return (val + 0x000080000000) & 0xFFFF0000; } static inline uint32_t _do_eslw (uint32_t op1, uint32_t op2) { /* No error here: 6 bits are used */ return op1 << (op2 & 0x3F); } static inline int32_t _do_esrws (int32_t op1, uint32_t op2) { /* No error here: 6 bits are used */ return op1 >> (op2 & 0x3F); } static inline uint32_t _do_esrwu (uint32_t op1, uint32_t op2) { /* No error here: 6 bits are used */ return op1 >> (op2 & 0x3F); } static inline uint32_t _do_esubfw (uint32_t op1, uint32_t op2) { return op2 - op1; } /* evabs */ DO_SPE_OP1(abs); /* evaddw */ DO_SPE_OP2(addw); /* evcntlsw */ DO_SPE_OP1(cntlsw); /* evcntlzw */ DO_SPE_OP1(cntlzw); /* evneg */ DO_SPE_OP1(neg); /* evrlw */ DO_SPE_OP2(rlw); /* evrnd */ DO_SPE_OP1(rndw); /* evslw */ DO_SPE_OP2(slw); /* evsrws */ DO_SPE_OP2(srws); /* evsrwu */ DO_SPE_OP2(srwu); /* evsubfw */ DO_SPE_OP2(subfw); /* evsel is a little bit more complicated... */ static inline uint32_t _do_esel (uint32_t op1, uint32_t op2, int n) { if (n) return op1; else return op2; } void do_evsel (void) { T0_64 = ((uint64_t)_do_esel(T0_64 >> 32, T1_64 >> 32, T0 >> 3) << 32) | (uint64_t)_do_esel(T0_64, T1_64, (T0 >> 2) & 1); } /* Fixed-point vector comparisons */ #define DO_SPE_CMP(name) \ void do_ev##name (void) \ { \ T0 = _do_evcmp_merge((uint64_t)_do_e##name(T0_64 >> 32, \ T1_64 >> 32) << 32, \ _do_e##name(T0_64, T1_64)); \ } static inline uint32_t _do_evcmp_merge (int t0, int t1) { return (t0 << 3) | (t1 << 2) | ((t0 | t1) << 1) | (t0 & t1); } static inline int _do_ecmpeq (uint32_t op1, uint32_t op2) { return op1 == op2 ? 1 : 0; } static inline int _do_ecmpgts (int32_t op1, int32_t op2) { return op1 > op2 ? 1 : 0; } static inline int _do_ecmpgtu (uint32_t op1, uint32_t op2) { return op1 > op2 ? 1 : 0; } static inline int _do_ecmplts (int32_t op1, int32_t op2) { return op1 < op2 ? 1 : 0; } static inline int _do_ecmpltu (uint32_t op1, uint32_t op2) { return op1 < op2 ? 1 : 0; } /* evcmpeq */ DO_SPE_CMP(cmpeq); /* evcmpgts */ DO_SPE_CMP(cmpgts); /* evcmpgtu */ DO_SPE_CMP(cmpgtu); /* evcmplts */ DO_SPE_CMP(cmplts); /* evcmpltu */ DO_SPE_CMP(cmpltu); /* Single precision floating-point conversions from/to integer */ static inline uint32_t _do_efscfsi (int32_t val) { union { uint32_t u; float32 f; } u; u.f = int32_to_float32(val, &env->spe_status); return u.u; } static inline uint32_t _do_efscfui (uint32_t val) { union { uint32_t u; float32 f; } u; u.f = uint32_to_float32(val, &env->spe_status); return u.u; } static inline int32_t _do_efsctsi (uint32_t val) { union { int32_t u; float32 f; } u; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; return float32_to_int32(u.f, &env->spe_status); } static inline uint32_t _do_efsctui (uint32_t val) { union { int32_t u; float32 f; } u; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; return float32_to_uint32(u.f, &env->spe_status); } static inline int32_t _do_efsctsiz (uint32_t val) { union { int32_t u; float32 f; } u; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; return float32_to_int32_round_to_zero(u.f, &env->spe_status); } static inline uint32_t _do_efsctuiz (uint32_t val) { union { int32_t u; float32 f; } u; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; return float32_to_uint32_round_to_zero(u.f, &env->spe_status); } void do_efscfsi (void) { T0_64 = _do_efscfsi(T0_64); } void do_efscfui (void) { T0_64 = _do_efscfui(T0_64); } void do_efsctsi (void) { T0_64 = _do_efsctsi(T0_64); } void do_efsctui (void) { T0_64 = _do_efsctui(T0_64); } void do_efsctsiz (void) { T0_64 = _do_efsctsiz(T0_64); } void do_efsctuiz (void) { T0_64 = _do_efsctuiz(T0_64); } /* Single precision floating-point conversion to/from fractional */ static inline uint32_t _do_efscfsf (uint32_t val) { union { uint32_t u; float32 f; } u; float32 tmp; u.f = int32_to_float32(val, &env->spe_status); tmp = int64_to_float32(1ULL << 32, &env->spe_status); u.f = float32_div(u.f, tmp, &env->spe_status); return u.u; } static inline uint32_t _do_efscfuf (uint32_t val) { union { uint32_t u; float32 f; } u; float32 tmp; u.f = uint32_to_float32(val, &env->spe_status); tmp = uint64_to_float32(1ULL << 32, &env->spe_status); u.f = float32_div(u.f, tmp, &env->spe_status); return u.u; } static inline int32_t _do_efsctsf (uint32_t val) { union { int32_t u; float32 f; } u; float32 tmp; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; tmp = uint64_to_float32(1ULL << 32, &env->spe_status); u.f = float32_mul(u.f, tmp, &env->spe_status); return float32_to_int32(u.f, &env->spe_status); } static inline uint32_t _do_efsctuf (uint32_t val) { union { int32_t u; float32 f; } u; float32 tmp; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; tmp = uint64_to_float32(1ULL << 32, &env->spe_status); u.f = float32_mul(u.f, tmp, &env->spe_status); return float32_to_uint32(u.f, &env->spe_status); } static inline int32_t _do_efsctsfz (uint32_t val) { union { int32_t u; float32 f; } u; float32 tmp; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; tmp = uint64_to_float32(1ULL << 32, &env->spe_status); u.f = float32_mul(u.f, tmp, &env->spe_status); return float32_to_int32_round_to_zero(u.f, &env->spe_status); } static inline uint32_t _do_efsctufz (uint32_t val) { union { int32_t u; float32 f; } u; float32 tmp; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; tmp = uint64_to_float32(1ULL << 32, &env->spe_status); u.f = float32_mul(u.f, tmp, &env->spe_status); return float32_to_uint32_round_to_zero(u.f, &env->spe_status); } void do_efscfsf (void) { T0_64 = _do_efscfsf(T0_64); } void do_efscfuf (void) { T0_64 = _do_efscfuf(T0_64); } void do_efsctsf (void) { T0_64 = _do_efsctsf(T0_64); } void do_efsctuf (void) { T0_64 = _do_efsctuf(T0_64); } void do_efsctsfz (void) { T0_64 = _do_efsctsfz(T0_64); } void do_efsctufz (void) { T0_64 = _do_efsctufz(T0_64); } /* Double precision floating point helpers */ static inline int _do_efdcmplt (uint64_t op1, uint64_t op2) { /* XXX: TODO: test special values (NaN, infinites, ...) */ return _do_efdtstlt(op1, op2); } static inline int _do_efdcmpgt (uint64_t op1, uint64_t op2) { /* XXX: TODO: test special values (NaN, infinites, ...) */ return _do_efdtstgt(op1, op2); } static inline int _do_efdcmpeq (uint64_t op1, uint64_t op2) { /* XXX: TODO: test special values (NaN, infinites, ...) */ return _do_efdtsteq(op1, op2); } void do_efdcmplt (void) { T0 = _do_efdcmplt(T0_64, T1_64); } void do_efdcmpgt (void) { T0 = _do_efdcmpgt(T0_64, T1_64); } void do_efdcmpeq (void) { T0 = _do_efdcmpeq(T0_64, T1_64); } /* Double precision floating-point conversion to/from integer */ static inline uint64_t _do_efdcfsi (int64_t val) { union { uint64_t u; float64 f; } u; u.f = int64_to_float64(val, &env->spe_status); return u.u; } static inline uint64_t _do_efdcfui (uint64_t val) { union { uint64_t u; float64 f; } u; u.f = uint64_to_float64(val, &env->spe_status); return u.u; } static inline int64_t _do_efdctsi (uint64_t val) { union { int64_t u; float64 f; } u; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; return float64_to_int64(u.f, &env->spe_status); } static inline uint64_t _do_efdctui (uint64_t val) { union { int64_t u; float64 f; } u; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; return float64_to_uint64(u.f, &env->spe_status); } static inline int64_t _do_efdctsiz (uint64_t val) { union { int64_t u; float64 f; } u; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; return float64_to_int64_round_to_zero(u.f, &env->spe_status); } static inline uint64_t _do_efdctuiz (uint64_t val) { union { int64_t u; float64 f; } u; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; return float64_to_uint64_round_to_zero(u.f, &env->spe_status); } void do_efdcfsi (void) { T0_64 = _do_efdcfsi(T0_64); } void do_efdcfui (void) { T0_64 = _do_efdcfui(T0_64); } void do_efdctsi (void) { T0_64 = _do_efdctsi(T0_64); } void do_efdctui (void) { T0_64 = _do_efdctui(T0_64); } void do_efdctsiz (void) { T0_64 = _do_efdctsiz(T0_64); } void do_efdctuiz (void) { T0_64 = _do_efdctuiz(T0_64); } /* Double precision floating-point conversion to/from fractional */ static inline uint64_t _do_efdcfsf (int64_t val) { union { uint64_t u; float64 f; } u; float64 tmp; u.f = int32_to_float64(val, &env->spe_status); tmp = int64_to_float64(1ULL << 32, &env->spe_status); u.f = float64_div(u.f, tmp, &env->spe_status); return u.u; } static inline uint64_t _do_efdcfuf (uint64_t val) { union { uint64_t u; float64 f; } u; float64 tmp; u.f = uint32_to_float64(val, &env->spe_status); tmp = int64_to_float64(1ULL << 32, &env->spe_status); u.f = float64_div(u.f, tmp, &env->spe_status); return u.u; } static inline int64_t _do_efdctsf (uint64_t val) { union { int64_t u; float64 f; } u; float64 tmp; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; tmp = uint64_to_float64(1ULL << 32, &env->spe_status); u.f = float64_mul(u.f, tmp, &env->spe_status); return float64_to_int32(u.f, &env->spe_status); } static inline uint64_t _do_efdctuf (uint64_t val) { union { int64_t u; float64 f; } u; float64 tmp; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; tmp = uint64_to_float64(1ULL << 32, &env->spe_status); u.f = float64_mul(u.f, tmp, &env->spe_status); return float64_to_uint32(u.f, &env->spe_status); } static inline int64_t _do_efdctsfz (uint64_t val) { union { int64_t u; float64 f; } u; float64 tmp; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; tmp = uint64_to_float64(1ULL << 32, &env->spe_status); u.f = float64_mul(u.f, tmp, &env->spe_status); return float64_to_int32_round_to_zero(u.f, &env->spe_status); } static inline uint64_t _do_efdctufz (uint64_t val) { union { int64_t u; float64 f; } u; float64 tmp; u.u = val; /* NaN are not treated the same way IEEE 754 does */ if (unlikely(isnan(u.f))) return 0; tmp = uint64_to_float64(1ULL << 32, &env->spe_status); u.f = float64_mul(u.f, tmp, &env->spe_status); return float64_to_uint32_round_to_zero(u.f, &env->spe_status); } void do_efdcfsf (void) { T0_64 = _do_efdcfsf(T0_64); } void do_efdcfuf (void) { T0_64 = _do_efdcfuf(T0_64); } void do_efdctsf (void) { T0_64 = _do_efdctsf(T0_64); } void do_efdctuf (void) { T0_64 = _do_efdctuf(T0_64); } void do_efdctsfz (void) { T0_64 = _do_efdctsfz(T0_64); } void do_efdctufz (void) { T0_64 = _do_efdctufz(T0_64); } /* Floating point conversion between single and double precision */ static inline uint32_t _do_efscfd (uint64_t val) { union { uint64_t u; float64 f; } u1; union { uint32_t u; float32 f; } u2; u1.u = val; u2.f = float64_to_float32(u1.f, &env->spe_status); return u2.u; } static inline uint64_t _do_efdcfs (uint32_t val) { union { uint64_t u; float64 f; } u2; union { uint32_t u; float32 f; } u1; u1.u = val; u2.f = float32_to_float64(u1.f, &env->spe_status); return u2.u; } void do_efscfd (void) { T0_64 = _do_efscfd(T0_64); } void do_efdcfs (void) { T0_64 = _do_efdcfs(T0_64); } /* Single precision fixed-point vector arithmetic */ /* evfsabs */ DO_SPE_OP1(fsabs); /* evfsnabs */ DO_SPE_OP1(fsnabs); /* evfsneg */ DO_SPE_OP1(fsneg); /* evfsadd */ DO_SPE_OP2(fsadd); /* evfssub */ DO_SPE_OP2(fssub); /* evfsmul */ DO_SPE_OP2(fsmul); /* evfsdiv */ DO_SPE_OP2(fsdiv); /* Single-precision floating-point comparisons */ static inline int _do_efscmplt (uint32_t op1, uint32_t op2) { /* XXX: TODO: test special values (NaN, infinites, ...) */ return _do_efststlt(op1, op2); } static inline int _do_efscmpgt (uint32_t op1, uint32_t op2) { /* XXX: TODO: test special values (NaN, infinites, ...) */ return _do_efststgt(op1, op2); } static inline int _do_efscmpeq (uint32_t op1, uint32_t op2) { /* XXX: TODO: test special values (NaN, infinites, ...) */ return _do_efststeq(op1, op2); } void do_efscmplt (void) { T0 = _do_efscmplt(T0_64, T1_64); } void do_efscmpgt (void) { T0 = _do_efscmpgt(T0_64, T1_64); } void do_efscmpeq (void) { T0 = _do_efscmpeq(T0_64, T1_64); } /* Single-precision floating-point vector comparisons */ /* evfscmplt */ DO_SPE_CMP(fscmplt); /* evfscmpgt */ DO_SPE_CMP(fscmpgt); /* evfscmpeq */ DO_SPE_CMP(fscmpeq); /* evfststlt */ DO_SPE_CMP(fststlt); /* evfststgt */ DO_SPE_CMP(fststgt); /* evfststeq */ DO_SPE_CMP(fststeq); /* Single-precision floating-point vector conversions */ /* evfscfsi */ DO_SPE_OP1(fscfsi); /* evfscfui */ DO_SPE_OP1(fscfui); /* evfscfuf */ DO_SPE_OP1(fscfuf); /* evfscfsf */ DO_SPE_OP1(fscfsf); /* evfsctsi */ DO_SPE_OP1(fsctsi); /* evfsctui */ DO_SPE_OP1(fsctui); /* evfsctsiz */ DO_SPE_OP1(fsctsiz); /* evfsctuiz */ DO_SPE_OP1(fsctuiz); /* evfsctsf */ DO_SPE_OP1(fsctsf); /* evfsctuf */ DO_SPE_OP1(fsctuf); #endif /* defined(TARGET_PPCSPE) */ /*****************************************************************************/ /* Softmmu support */ #if !defined (CONFIG_USER_ONLY) #define MMUSUFFIX _mmu #define GETPC() (__builtin_return_address(0)) #define SHIFT 0 #include "softmmu_template.h" #define SHIFT 1 #include "softmmu_template.h" #define SHIFT 2 #include "softmmu_template.h" #define SHIFT 3 #include "softmmu_template.h" /* try to fill the TLB and return an exception if error. If retaddr is NULL, it means that the function was called in C code (i.e. not from generated code or from helper.c) */ /* XXX: fix it to restore all registers */ void tlb_fill (target_ulong addr, int is_write, int is_user, void *retaddr) { TranslationBlock *tb; CPUState *saved_env; target_phys_addr_t 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_ppc_handle_mmu_fault(env, addr, is_write, is_user, 1); if (unlikely(ret != 0)) { if (likely(retaddr)) { /* now we have a real cpu fault */ pc = (target_phys_addr_t)retaddr; tb = tb_find_pc(pc); if (likely(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_err(env->exception_index, env->error_code); } env = saved_env; } /* TLB invalidation helpers */ void do_tlbia (void) { ppc_tlb_invalidate_all(env); } void do_tlbie (void) { T0 = (uint32_t)T0; #if !defined(FLUSH_ALL_TLBS) if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_6xx)) { ppc6xx_tlb_invalidate_virt(env, T0 & TARGET_PAGE_MASK, 0); if (env->id_tlbs == 1) ppc6xx_tlb_invalidate_virt(env, T0 & TARGET_PAGE_MASK, 1); } else if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_4xx)) { /* XXX: TODO */ #if 0 ppcbooke_tlb_invalidate_virt(env, T0 & TARGET_PAGE_MASK, env->spr[SPR_BOOKE_PID]); #endif } else { /* tlbie invalidate TLBs for all segments */ T0 &= TARGET_PAGE_MASK; T0 &= ~((target_ulong)-1 << 28); /* XXX: this case should be optimized, * giving a mask to tlb_flush_page */ tlb_flush_page(env, T0 | (0x0 << 28)); tlb_flush_page(env, T0 | (0x1 << 28)); tlb_flush_page(env, T0 | (0x2 << 28)); tlb_flush_page(env, T0 | (0x3 << 28)); tlb_flush_page(env, T0 | (0x4 << 28)); tlb_flush_page(env, T0 | (0x5 << 28)); tlb_flush_page(env, T0 | (0x6 << 28)); tlb_flush_page(env, T0 | (0x7 << 28)); tlb_flush_page(env, T0 | (0x8 << 28)); tlb_flush_page(env, T0 | (0x9 << 28)); tlb_flush_page(env, T0 | (0xA << 28)); tlb_flush_page(env, T0 | (0xB << 28)); tlb_flush_page(env, T0 | (0xC << 28)); tlb_flush_page(env, T0 | (0xD << 28)); tlb_flush_page(env, T0 | (0xE << 28)); tlb_flush_page(env, T0 | (0xF << 28)); } #else do_tlbia(); #endif } #if defined(TARGET_PPC64) void do_tlbie_64 (void) { T0 = (uint64_t)T0; #if !defined(FLUSH_ALL_TLBS) if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_6xx)) { ppc6xx_tlb_invalidate_virt(env, T0 & TARGET_PAGE_MASK, 0); if (env->id_tlbs == 1) ppc6xx_tlb_invalidate_virt(env, T0 & TARGET_PAGE_MASK, 1); } else if (unlikely(PPC_MMU(env) == PPC_FLAGS_MMU_SOFT_4xx)) { /* XXX: TODO */ #if 0 ppcbooke_tlb_invalidate_virt(env, T0 & TARGET_PAGE_MASK, env->spr[SPR_BOOKE_PID]); #endif } else { /* tlbie invalidate TLBs for all segments * As we have 2^36 segments, invalidate all qemu TLBs */ #if 0 T0 &= TARGET_PAGE_MASK; T0 &= ~((target_ulong)-1 << 28); /* XXX: this case should be optimized, * giving a mask to tlb_flush_page */ tlb_flush_page(env, T0 | (0x0 << 28)); tlb_flush_page(env, T0 | (0x1 << 28)); tlb_flush_page(env, T0 | (0x2 << 28)); tlb_flush_page(env, T0 | (0x3 << 28)); tlb_flush_page(env, T0 | (0x4 << 28)); tlb_flush_page(env, T0 | (0x5 << 28)); tlb_flush_page(env, T0 | (0x6 << 28)); tlb_flush_page(env, T0 | (0x7 << 28)); tlb_flush_page(env, T0 | (0x8 << 28)); tlb_flush_page(env, T0 | (0x9 << 28)); tlb_flush_page(env, T0 | (0xA << 28)); tlb_flush_page(env, T0 | (0xB << 28)); tlb_flush_page(env, T0 | (0xC << 28)); tlb_flush_page(env, T0 | (0xD << 28)); tlb_flush_page(env, T0 | (0xE << 28)); tlb_flush_page(env, T0 | (0xF << 28)); #else tlb_flush(env, 1); #endif } #else do_tlbia(); #endif } #endif #if defined(TARGET_PPC64) void do_slbia (void) { /* XXX: TODO */ tlb_flush(env, 1); } void do_slbie (void) { /* XXX: TODO */ tlb_flush(env, 1); } #endif /* Software driven TLBs management */ /* PowerPC 602/603 software TLB load instructions helpers */ void do_load_6xx_tlb (int is_code) { target_ulong RPN, CMP, EPN; int way; RPN = env->spr[SPR_RPA]; if (is_code) { CMP = env->spr[SPR_ICMP]; EPN = env->spr[SPR_IMISS]; } else { CMP = env->spr[SPR_DCMP]; EPN = env->spr[SPR_DMISS]; } way = (env->spr[SPR_SRR1] >> 17) & 1; #if defined (DEBUG_SOFTWARE_TLB) if (loglevel != 0) { fprintf(logfile, "%s: EPN %08lx %08lx PTE0 %08lx PTE1 %08lx way %d\n", __func__, (unsigned long)T0, (unsigned long)EPN, (unsigned long)CMP, (unsigned long)RPN, way); } #endif /* Store this TLB */ ppc6xx_tlb_store(env, (uint32_t)(T0 & TARGET_PAGE_MASK), way, is_code, CMP, RPN); } static target_ulong booke_tlb_to_page_size (int size) { return 1024 << (2 * size); } static int booke_page_size_to_tlb (target_ulong page_size) { int size; switch (page_size) { case 0x00000400UL: size = 0x0; break; case 0x00001000UL: size = 0x1; break; case 0x00004000UL: size = 0x2; break; case 0x00010000UL: size = 0x3; break; case 0x00040000UL: size = 0x4; break; case 0x00100000UL: size = 0x5; break; case 0x00400000UL: size = 0x6; break; case 0x01000000UL: size = 0x7; break; case 0x04000000UL: size = 0x8; break; case 0x10000000UL: size = 0x9; break; case 0x40000000UL: size = 0xA; break; #if defined (TARGET_PPC64) case 0x000100000000ULL: size = 0xB; break; case 0x000400000000ULL: size = 0xC; break; case 0x001000000000ULL: size = 0xD; break; case 0x004000000000ULL: size = 0xE; break; case 0x010000000000ULL: size = 0xF; break; #endif default: size = -1; break; } return size; } /* Helpers for 4xx TLB management */ void do_4xx_tlbre_lo (void) { ppcemb_tlb_t *tlb; int size; T0 &= 0x3F; tlb = &env->tlb[T0].tlbe; T0 = tlb->EPN; if (tlb->prot & PAGE_VALID) T0 |= 0x400; size = booke_page_size_to_tlb(tlb->size); if (size < 0 || size > 0x7) size = 1; T0 |= size << 7; env->spr[SPR_40x_PID] = tlb->PID; } void do_4xx_tlbre_hi (void) { ppcemb_tlb_t *tlb; T0 &= 0x3F; tlb = &env->tlb[T0].tlbe; T0 = tlb->RPN; if (tlb->prot & PAGE_EXEC) T0 |= 0x200; if (tlb->prot & PAGE_WRITE) T0 |= 0x100; } void do_4xx_tlbsx (void) { T0 = ppcemb_tlb_search(env, T0); } void do_4xx_tlbsx_ (void) { int tmp = xer_ov; T0 = ppcemb_tlb_search(env, T0); if (T0 != -1) tmp |= 0x02; env->crf[0] = tmp; } void do_4xx_tlbwe_hi (void) { ppcemb_tlb_t *tlb; target_ulong page, end; #if defined (DEBUG_SOFTWARE_TLB) if (loglevel) { fprintf(logfile, "%s T0 " REGX " T1 " REGX "\n", __func__, T0, T1); } #endif T0 &= 0x3F; tlb = &env->tlb[T0].tlbe; /* Invalidate previous TLB (if it's valid) */ if (tlb->prot & PAGE_VALID) { end = tlb->EPN + tlb->size; #if defined (DEBUG_SOFTWARE_TLB) if (loglevel) { fprintf(logfile, "%s: invalidate old TLB %d start " ADDRX " end " ADDRX "\n", __func__, (int)T0, tlb->EPN, end); } #endif for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE) tlb_flush_page(env, page); } tlb->size = booke_tlb_to_page_size((T1 >> 7) & 0x7); /* We cannot handle TLB size < TARGET_PAGE_SIZE. * If this ever occurs, one should use the ppcemb target instead * of the ppc or ppc64 one */ if ((T1 & 0x40) && tlb->size < TARGET_PAGE_SIZE) { cpu_abort(env, "TLB size %u < %u are not supported (%d)\n", tlb->size, TARGET_PAGE_SIZE, (int)((T1 >> 7) & 0x7)); } tlb->EPN = (T1 & 0xFFFFFC00) & ~(tlb->size - 1); if (T1 & 0x40) tlb->prot |= PAGE_VALID; else tlb->prot &= ~PAGE_VALID; if (T1 & 0x20) { /* XXX: TO BE FIXED */ cpu_abort(env, "Little-endian TLB entries are not supported by now\n"); } tlb->PID = env->spr[SPR_40x_PID]; /* PID */ tlb->attr = T1 & 0xFF; #if defined (DEBUG_SOFTWARE_TLB) if (loglevel != 0) { fprintf(logfile, "%s: set up TLB %d RPN " PADDRX " EPN " ADDRX " size " ADDRX " prot %c%c%c%c PID %d\n", __func__, (int)T0, tlb->RPN, tlb->EPN, tlb->size, tlb->prot & PAGE_READ ? 'r' : '-', tlb->prot & PAGE_WRITE ? 'w' : '-', tlb->prot & PAGE_EXEC ? 'x' : '-', tlb->prot & PAGE_VALID ? 'v' : '-', (int)tlb->PID); } #endif /* Invalidate new TLB (if valid) */ if (tlb->prot & PAGE_VALID) { end = tlb->EPN + tlb->size; #if defined (DEBUG_SOFTWARE_TLB) if (loglevel) { fprintf(logfile, "%s: invalidate TLB %d start " ADDRX " end " ADDRX "\n", __func__, (int)T0, tlb->EPN, end); } #endif for (page = tlb->EPN; page < end; page += TARGET_PAGE_SIZE) tlb_flush_page(env, page); } } void do_4xx_tlbwe_lo (void) { ppcemb_tlb_t *tlb; #if defined (DEBUG_SOFTWARE_TLB) if (loglevel) { fprintf(logfile, "%s T0 " REGX " T1 " REGX "\n", __func__, T0, T1); } #endif T0 &= 0x3F; tlb = &env->tlb[T0].tlbe; tlb->RPN = T1 & 0xFFFFFC00; tlb->prot = PAGE_READ; if (T1 & 0x200) tlb->prot |= PAGE_EXEC; if (T1 & 0x100) tlb->prot |= PAGE_WRITE; #if defined (DEBUG_SOFTWARE_TLB) if (loglevel) { fprintf(logfile, "%s: set up TLB %d RPN " ADDRX " EPN " ADDRX " size " ADDRX " prot %c%c%c%c PID %d\n", __func__, (int)T0, tlb->RPN, tlb->EPN, tlb->size, tlb->prot & PAGE_READ ? 'r' : '-', tlb->prot & PAGE_WRITE ? 'w' : '-', tlb->prot & PAGE_EXEC ? 'x' : '-', tlb->prot & PAGE_VALID ? 'v' : '-', (int)tlb->PID); } #endif } #endif /* !CONFIG_USER_ONLY */