From: kub Date: Thu, 23 May 2019 17:04:31 +0000 (+0200) Subject: sh2 drc, keep T bit in host flags as long as possible X-Git-Tag: v2.00~851 X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=39615f60791ad06ed817ba615bf9d32e0bee07aa;p=picodrive.git sh2 drc, keep T bit in host flags as long as possible --- diff --git a/cpu/drc/emit_arm.c b/cpu/drc/emit_arm.c index 9af2f453..b7922a98 100644 --- a/cpu/drc/emit_arm.c +++ b/cpu/drc/emit_arm.c @@ -128,7 +128,7 @@ static NOINLINE void EMIT(u32 op, u32 dst, u32 src) emit_cache[i] = emit_cache[i+1]; } } - + static void emith_flush(void) { int i; @@ -156,6 +156,7 @@ static void emith_flush(void) #define A_COND_LE 0xd #define A_COND_CS A_COND_HS #define A_COND_CC A_COND_LO +#define A_COND_NV 0xf // Not Valid (aka NeVer :-) - ATTN: not a real condition! /* unified conditions */ #define DCOND_EQ A_COND_EQ @@ -414,6 +415,9 @@ static void emith_op_imm2(int cond, int s, int op, int rd, int rn, unsigned int u32 v; int i; + if (cond == A_COND_NV) + return; + switch (op) { case A_OP_MOV: rn = 0; @@ -522,6 +526,9 @@ static int emith_xbranch(int cond, void *target, int is_call) int direct = is_offset_24(val); u32 *start_ptr = (u32 *)tcache_ptr; + if (cond == A_COND_NV) + return 0; // never taken + if (direct) { EOP_C_B(cond,is_call,val & 0xffffff); // b, bl target @@ -1328,3 +1335,52 @@ static inline void emith_pool_adjust(int pool_index, int move_offs) EMITH_SJMP2_END(DCOND_NE); \ } while (0) +#ifdef T +// T bit handling +static int tcond = -1; + +#define emith_invert_cond(cond) \ + ((cond) ^ 1) + +#define emith_clr_t_cond(sr) \ + (void)sr + +#define emith_set_t_cond(sr, cond) \ + tcond = cond + +#define emith_get_t_cond() \ + tcond + +#define emith_invalidate_t() \ + tcond = -1 + +#define emith_set_t(sr, val) \ + tcond = ((val) ? A_COND_AL: A_COND_NV) + +static void emith_sync_t(sr) +{ + if (tcond == A_COND_AL) + emith_or_r_imm(sr, T); + else if (tcond == A_COND_NV) + emith_bic_r_imm(sr, T); + else if (tcond >= 0) { + emith_bic_r_imm_c(emith_invert_cond(tcond),sr, T); + emith_or_r_imm_c(tcond, sr, T); + } + tcond = -1; +} + +static int emith_tst_t(int sr, int tf) +{ + if (tcond < 0) { + emith_tst_r_imm(sr, T); + return tf ? DCOND_NE: DCOND_EQ; + } else if (tcond >= A_COND_AL) { + // MUST sync because A_COND_NV isn't a real condition + emith_sync_t(sr); + emith_tst_r_imm(sr, T); + return tf ? DCOND_NE: DCOND_EQ; + } else + return tf ? tcond : emith_invert_cond(tcond); +} +#endif diff --git a/cpu/drc/emit_x86.c b/cpu/drc/emit_x86.c index edb34521..32569404 100644 --- a/cpu/drc/emit_x86.c +++ b/cpu/drc/emit_x86.c @@ -1200,3 +1200,41 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI }; #define emith_pool_commit(j) /**/ #define emith_insn_ptr() ((u8 *)tcache_ptr) #define emith_flush() /**/ + +#ifdef T +// T bit handling +#define emith_invert_cond(cond) \ + ((cond) ^ 1) + +static void emith_clr_t_cond(int sr) +{ + emith_bic_r_imm(sr, T); +} + +static void emith_set_t_cond(int sr, int cond) +{ + EMITH_SJMP_START(emith_invert_cond(cond)); + emith_or_r_imm_c(cond, sr, T); + EMITH_SJMP_END(emith_invert_cond(cond)); +} + +#define emith_get_t_cond() -1 + +#define emith_sync_t(sr) ((void)sr) + +#define emith_invalidate_t() + +static void emith_set_t(int sr, int val) +{ + if (val) + emith_or_r_imm(sr, T); + else + emith_bic_r_imm(sr, T); +} + +static int emith_tst_t(int sr, int tf) +{ + emith_tst_r_imm(sr, T); + return tf ? DCOND_NE: DCOND_EQ; +} +#endif diff --git a/cpu/sh2/compiler.c b/cpu/sh2/compiler.c index be6e3ee1..d441039b 100644 --- a/cpu/sh2/compiler.c +++ b/cpu/sh2/compiler.c @@ -117,6 +117,17 @@ static int insns_compiled, hash_collisions, host_insn_count; #define SHR_MEM 31 #define SHR_TMP -1 +#define T 0x00000001 +#define S 0x00000002 +#define I 0x000000f0 +#define Q 0x00000100 +#define M 0x00000200 +#define T_save 0x00000800 + +#define I_SHIFT 4 +#define Q_SHIFT 8 +#define M_SHIFT 9 + static struct op_data { u8 op; u8 cycles; @@ -525,17 +536,6 @@ static cache_reg_t cache_regs[] = { static signed char reg_map_host[HOST_REGS]; -#define T 0x00000001 -#define S 0x00000002 -#define I 0x000000f0 -#define Q 0x00000100 -#define M 0x00000200 -#define T_save 0x00000800 - -#define I_SHIFT 4 -#define Q_SHIFT 8 -#define M_SHIFT 9 - static void REGPARM(1) (*sh2_drc_entry)(SH2 *sh2); static void (*sh2_drc_dispatcher)(void); #if CALL_STACK @@ -2318,17 +2318,19 @@ static void emit_move_r_r(sh2_reg_e dst, sh2_reg_e src) } } -// T must be clear, and comparison done just before this -static void emit_or_t_if_eq(int srr) +static void emit_sync_t_to_sr(void) { - EMITH_SJMP_START(DCOND_NE); - emith_or_r_imm_c(DCOND_EQ, srr, T); - EMITH_SJMP_END(DCOND_NE); + // avoid reloading SR from context if there's nothing to do + if (emith_get_t_cond() >= 0) { + int sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); + emith_sync_t(sr); + } } // rd = @(arg0) static int emit_memhandler_read(int size) { + emit_sync_t_to_sr(); rcache_clean_tmp(); #ifndef DRC_SR_REG // must writeback cycles for poll detection stuff @@ -2356,6 +2358,7 @@ static int emit_memhandler_read(int size) // @(arg0) = arg1 static void emit_memhandler_write(int size) { + emit_sync_t_to_sr(); rcache_clean_tmp(); #ifndef DRC_SR_REG if (guest_regs[SHR_SR].vreg != -1) @@ -2776,6 +2779,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) // clear stale state after compile errors rcache_invalidate(); + emith_invalidate_t(); drcf = (struct drcf) { 0 }; // ------------------------------------------------- @@ -2812,6 +2816,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) { sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); FLUSH_CYCLES(sr); + emith_sync_t(sr); rcache_flush(); emith_flush(); @@ -2896,6 +2901,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) #if (DRC_DEBUG & (8|256|512|1024)) sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); + emith_sync_t(sr); rcache_clean(); tmp = rcache_used_hreg_mask(); emith_save_caller_regs(tmp); @@ -2918,6 +2924,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) if (!(op_flags[i] & OF_DELAY_OP)) { sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); FLUSH_CYCLES(sr); + emith_sync_t(sr); rcache_clean(); tmp = rcache_used_hreg_mask(); @@ -2944,6 +2951,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) delay_dep_bk = opd->source & ops[i-1].dest; if (delay_dep_fw & BITMASK1(SHR_T)) { sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); + emith_sync_t(sr); DELAY_SAVE_T(sr); } if (delay_dep_bk & BITMASK1(SHR_PC)) { @@ -2965,9 +2973,8 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) sr = rcache_get_reg(SHR_SR, RC_GR_READ, NULL); tmp = rcache_get_reg(SHR_PC, RC_GR_WRITE, NULL); emith_move_r_imm(tmp, pc); - emith_tst_r_imm(sr, T); - tmp2 = ops[i-1].op == OP_BRANCH_CT ? DCOND_NE : DCOND_EQ; - tmp3 = ops[i-1].op == OP_BRANCH_CT ? DCOND_EQ : DCOND_NE; + tmp2 = emith_tst_t(sr, (ops[i-1].op == OP_BRANCH_CT)); + tmp3 = emith_invert_cond(tmp2); EMITH_SJMP_START(tmp3); emith_move_r_imm_c(tmp2, tmp, ops[i-1].imm); EMITH_SJMP_END(tmp3); @@ -3061,6 +3068,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) goto end_op; case OP_RTE: // RTE 0000000000101011 + emith_invalidate_t(); // pop PC emit_memhandler_read_rr(sh2, SHR_PC, SHR_SP, 0, 2 | MF_POSTINCR); // pop SR @@ -3079,6 +3087,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) case OP_TRAPA: // TRAPA #imm 11000011iiiiiiii // push SR tmp = rcache_get_reg_arg(1, SHR_SR, &tmp2); + emith_sync_t(tmp2); emith_clear_msb(tmp, tmp2, 22); emit_memhandler_write_rr(sh2, SHR_TMP, SHR_SP, 0, 2 | MF_PREDECR); // push PC @@ -3177,6 +3186,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) } if (tmp2 == SHR_SR) { sr = rcache_get_reg(SHR_SR, RC_GR_READ, NULL); + emith_sync_t(sr); tmp = rcache_get_reg(GET_Rn(), RC_GR_WRITE, NULL); emith_clear_msb(tmp, sr, 22); // reserved bits defined by ISA as 0 } else @@ -3198,11 +3208,11 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) { case 0: // CLRT 0000000000001000 sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); - emith_bic_r_imm(sr, T); + emith_set_t(sr, 0); break; case 1: // SETT 0000000000011000 sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); - emith_or_r_imm(sr, T); + emith_set_t(sr, 1); break; case 2: // CLRMAC 0000000000101000 emit_move_r_imm32(SHR_MACL, 0); @@ -3219,10 +3229,12 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) break; case 1: // DIV0U 0000000000011001 sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); + emith_invalidate_t(); emith_bic_r_imm(sr, M|Q|T); break; case 2: // MOVT Rn 0000nnnn00101001 sr = rcache_get_reg(SHR_SR, RC_GR_READ, NULL); + emith_sync_t(sr); tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE, NULL); emith_clear_msb(tmp2, sr, 31); break; @@ -3286,6 +3298,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ, NULL); tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ, NULL); + emith_invalidate_t(); emith_bic_r_imm(sr, M|Q|T); emith_tst_r_imm(tmp2, (1<<31)); EMITH_SJMP_START(DCOND_EQ); @@ -3304,9 +3317,9 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ, NULL); tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ, NULL); - emith_bic_r_imm(sr, T); + emith_clr_t_cond(sr); emith_tst_r_r(tmp2, tmp3); - emit_or_t_if_eq(sr); + emith_set_t_cond(sr, DCOND_EQ); goto end_op; case 0x09: // AND Rm,Rn 0010nnnnmmmm1001 if (GET_Rm() != GET_Rn()) { @@ -3339,7 +3352,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ, NULL); emith_eor_r_r_r(tmp, tmp2, tmp3); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); - emith_bic_r_imm(sr, T); + emith_clr_t_cond(sr); emith_tst_r_imm(tmp, 0x000000ff); EMITH_SJMP_START(DCOND_EQ); emith_tst_r_imm_c(DCOND_NE, tmp, 0x0000ff00); @@ -3350,7 +3363,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) EMITH_SJMP_END(DCOND_EQ); EMITH_SJMP_END(DCOND_EQ); EMITH_SJMP_END(DCOND_EQ); - emit_or_t_if_eq(sr); + emith_set_t_cond(sr, DCOND_EQ); rcache_free_tmp(tmp); goto end_op; case 0x0d: // XTRCT Rm,Rn 0010nnnnmmmm1101 @@ -3391,32 +3404,24 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); tmp2 = rcache_get_reg(GET_Rn(), RC_GR_READ, NULL); tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ, NULL); - emith_bic_r_imm(sr, T); + emith_clr_t_cond(sr); emith_cmp_r_r(tmp2, tmp3); switch (op & 0x07) { case 0x00: // CMP/EQ - emit_or_t_if_eq(sr); + emith_set_t_cond(sr, DCOND_EQ); break; case 0x02: // CMP/HS - EMITH_SJMP_START(DCOND_LO); - emith_or_r_imm_c(DCOND_HS, sr, T); - EMITH_SJMP_END(DCOND_LO); + emith_set_t_cond(sr, DCOND_HS); break; case 0x03: // CMP/GE - EMITH_SJMP_START(DCOND_LT); - emith_or_r_imm_c(DCOND_GE, sr, T); - EMITH_SJMP_END(DCOND_LT); + emith_set_t_cond(sr, DCOND_GE); break; case 0x06: // CMP/HI - EMITH_SJMP_START(DCOND_LS); - emith_or_r_imm_c(DCOND_HI, sr, T); - EMITH_SJMP_END(DCOND_LS); + emith_set_t_cond(sr, DCOND_HI); break; case 0x07: // CMP/GT - EMITH_SJMP_START(DCOND_LE); - emith_or_r_imm_c(DCOND_GT, sr, T); - EMITH_SJMP_END(DCOND_LE); + emith_set_t_cond(sr, DCOND_GT); break; } goto end_op; @@ -3431,6 +3436,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) tmp3 = rcache_get_reg(GET_Rm(), RC_GR_READ, NULL); tmp2 = rcache_get_reg(GET_Rn(), RC_GR_RMW, &tmp); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); + emith_sync_t(sr); emith_tpop_carry(sr, 0); emith_adcf_r_r_r(tmp2, tmp, tmp); emith_tpush_carry(sr, 0); // keep Q1 in T for now @@ -3479,6 +3485,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ, NULL); tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW, &tmp3); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); + emith_sync_t(sr); if (op & 4) { // adc emith_tpop_carry(sr, 0); emith_adcf_r_r_r(tmp, tmp3, tmp2); @@ -3494,14 +3501,12 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) tmp2 = rcache_get_reg(GET_Rm(), RC_GR_READ, NULL); tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW, &tmp3); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); - emith_bic_r_imm(sr, T); + emith_clr_t_cond(sr); if (op & 4) { emith_addf_r_r_r(tmp, tmp3, tmp2); } else emith_subf_r_r_r(tmp, tmp3, tmp2); - EMITH_SJMP_START(DCOND_VC); - emith_or_r_imm_c(DCOND_VS, sr, T); - EMITH_SJMP_END(DCOND_VC); + emith_set_t_cond(sr, DCOND_VS); goto end_op; case 0x0d: // DMULS.L Rm,Rn 0011nnnnmmmm1101 tmp = rcache_get_reg(GET_Rn(), RC_GR_READ, NULL); @@ -3524,6 +3529,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) case 2: // SHAL Rn 0100nnnn00100000 tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW, &tmp2); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); + emith_sync_t(sr); emith_tpop_carry(sr, 0); // dummy emith_lslf(tmp, tmp2, 1); emith_tpush_carry(sr, 0); @@ -3538,10 +3544,10 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) drcf.polling = drcf.loop_type = 0; } #endif - emith_bic_r_imm(sr, T); tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW, &tmp2); + emith_clr_t_cond(sr); emith_subf_r_r_imm(tmp, tmp2, 1); - emit_or_t_if_eq(sr); + emith_set_t_cond(sr, DCOND_EQ); goto end_op; } goto default_; @@ -3552,6 +3558,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) case 2: // SHAR Rn 0100nnnn00100001 tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW, &tmp2); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); + emith_sync_t(sr); emith_tpop_carry(sr, 0); // dummy if (op & 0x20) { emith_asrf(tmp, tmp2, 1); @@ -3562,11 +3569,9 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) case 1: // CMP/PZ Rn 0100nnnn00010001 tmp = rcache_get_reg(GET_Rn(), RC_GR_READ, NULL); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); - emith_bic_r_imm(sr, T); + emith_clr_t_cond(sr); emith_cmp_r_imm(tmp, 0); - EMITH_SJMP_START(DCOND_LT); - emith_or_r_imm_c(DCOND_GE, sr, T); - EMITH_SJMP_END(DCOND_LT); + emith_set_t_cond(sr, DCOND_GE); goto end_op; } goto default_; @@ -3597,6 +3602,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) } tmp3 = rcache_get_reg_arg(1, tmp, &tmp4); if (tmp == SHR_SR) { + emith_sync_t(tmp4); emith_clear_msb(tmp3, tmp4, 22); // reserved bits defined by ISA as 0 } else if (tmp3 != tmp4) emith_move_r_r(tmp3, tmp4); @@ -3610,6 +3616,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) case 0x05: // ROTR Rn 0100nnnn00000101 tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW, &tmp2); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); + emith_sync_t(sr); emith_tpop_carry(sr, 0); // dummy if (op & 1) { emith_rorf(tmp, tmp2, 1); @@ -3621,6 +3628,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) case 0x25: // ROTCR Rn 0100nnnn00100101 tmp = rcache_get_reg(GET_Rn(), RC_GR_RMW, NULL); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); + emith_sync_t(sr); emith_tpop_carry(sr, 0); if (op & 1) { emith_rorcf(tmp); @@ -3631,11 +3639,9 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) case 0x15: // CMP/PL Rn 0100nnnn00010101 tmp = rcache_get_reg(GET_Rn(), RC_GR_READ, NULL); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); - emith_bic_r_imm(sr, T); + emith_clr_t_cond(sr); emith_cmp_r_imm(tmp, 0); - EMITH_SJMP_START(DCOND_LE); - emith_or_r_imm_c(DCOND_GT, sr, T); - EMITH_SJMP_END(DCOND_LE); + emith_set_t_cond(sr, DCOND_GT); goto end_op; } goto default_; @@ -3665,6 +3671,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) goto default_; } if (tmp == SHR_SR) { + emith_invalidate_t(); tmp2 = emit_memhandler_read_rr(sh2, SHR_TMP, GET_Rn(), 0, 2 | MF_POSTINCR); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); emith_write_sr(sr, tmp2); @@ -3723,9 +3730,9 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) rcache_get_reg_arg(0, GET_Rn(), NULL); tmp = emit_memhandler_read(0); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); - emith_bic_r_imm(sr, T); + emith_clr_t_cond(sr); emith_cmp_r_imm(tmp, 0); - emit_or_t_if_eq(sr); + emith_set_t_cond(sr, DCOND_EQ); emith_or_r_imm(tmp, 0x80); tmp2 = rcache_get_tmp_arg(1); // assuming it differs to tmp emith_move_r_r(tmp2, tmp); @@ -3753,6 +3760,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) goto default_; } if (tmp2 == SHR_SR) { + emith_invalidate_t(); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); tmp = rcache_get_reg(GET_Rn(), RC_GR_READ, NULL); emith_write_sr(sr, tmp); @@ -3820,6 +3828,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) break; case 0x0a: // NEGC Rm,Rn 0110nnnnmmmm1010 sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); + emith_sync_t(sr); emith_tpop_carry(sr, 1); emith_negcf_r_r(tmp2, tmp); emith_tpush_carry(sr, 1); @@ -3870,9 +3879,9 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) case 0x0800: // CMP/EQ #imm,R0 10001000iiiiiiii tmp2 = rcache_get_reg(SHR_R0, RC_GR_READ, NULL); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); - emith_bic_r_imm(sr, T); + emith_clr_t_cond(sr); emith_cmp_r_imm(tmp2, (s8)(op & 0xff)); - emit_or_t_if_eq(sr); + emith_set_t_cond(sr, DCOND_EQ); goto end_op; } goto default_; @@ -3896,9 +3905,9 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) case 0x0800: // TST #imm,R0 11001000iiiiiiii tmp = rcache_get_reg(SHR_R0, RC_GR_READ, NULL); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); - emith_bic_r_imm(sr, T); + emith_clr_t_cond(sr); emith_tst_r_imm(tmp, op & 0xff); - emit_or_t_if_eq(sr); + emith_set_t_cond(sr, DCOND_EQ); goto end_op; case 0x0900: // AND #imm,R0 11001001iiiiiiii tmp = rcache_get_reg(SHR_R0, RC_GR_RMW, &tmp2); @@ -3919,9 +3928,9 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) case 0x0c00: // TST.B #imm,@(R0,GBR) 11001100iiiiiiii tmp = emit_indirect_indexed_read(sh2, SHR_TMP, SHR_R0, SHR_GBR, 0 | drcf.polling); sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); - emith_bic_r_imm(sr, T); + emith_clr_t_cond(sr); emith_tst_r_imm(tmp, op & 0xff); - emit_or_t_if_eq(sr); + emith_set_t_cond(sr, DCOND_EQ); rcache_free_tmp(tmp); goto end_op; case 0x0d00: // AND.B #imm,@(R0,GBR) 11001101iiiiiiii @@ -3955,7 +3964,7 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) if (!(op_flags[i] & OF_B_IN_DS)) { elprintf_sh2(sh2, EL_ANOMALY, "drc: illegal op %04x @ %08x", op, pc - 2); - exit(1); + exit(1); } } @@ -3973,6 +3982,7 @@ end_op: if (drcf.test_irq && !drcf.pending_branch_direct) { sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); FLUSH_CYCLES(sr); + emith_sync_t(sr); if (!drcf.pending_branch_indirect) emit_move_r_imm32(SHR_PC, pc); rcache_flush(); @@ -3997,6 +4007,7 @@ end_op: (drcf.loop_type == OF_DELAY_LOOP && drcf.delay_reg >= 0))) { // idle or delay loop + emit_sync_t_to_sr(); emith_sh2_delay_loop(cycles, drcf.delay_reg); drcf.polling = drcf.loop_type = 0; } @@ -4009,11 +4020,20 @@ end_op: // emit condition test for conditional branch if (OP_ISBRACND(opd_b->op)) { cond = (opd_b->op == OP_BRANCH_CF) ? DCOND_EQ : DCOND_NE; - if (delay_dep_fw & BITMASK1(SHR_T)) + if (delay_dep_fw & BITMASK1(SHR_T)) { + emith_sync_t(sr); emith_tst_r_imm(sr, T_save); - else - emith_tst_r_imm(sr, T); - } + } else { + cond = emith_tst_t(sr, (opd_b->op == OP_BRANCH_CT)); + if (emith_get_t_cond() >= 0) { + if (opd_b->op == OP_BRANCH_CT) + emith_or_r_imm_c(cond, sr, T); + else + emith_bic_r_imm_c(cond, sr, T); + } + } + } else + emith_sync_t(sr); // no modification of host status/flags between here and branching! #if LINK_BRANCHES @@ -4062,6 +4082,9 @@ end_op: // branch not taken, correct cycle count if (ctaken) emith_add_r_imm(sr, ctaken << 12); + // set T bit to reflect branch not taken for OP_BRANCH_CT/CF + if (emith_get_t_cond() >= 0) // T is synced for all other cases + emith_set_t(sr, opd_b->op == OP_BRANCH_CF); drcf.pending_branch_direct = 0; if (target_pc >= base_pc && target_pc < pc) @@ -4073,6 +4096,7 @@ end_op: sr = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); FLUSH_CYCLES(sr); + emith_sync_t(sr); rcache_clean(); #if CALL_STACK struct op_data *opd_b = (op_flags[i] & OF_DELAY_OP) ? opd-1 : opd; @@ -4113,6 +4137,7 @@ end_op: s32 tmp = rcache_get_reg(SHR_SR, RC_GR_RMW, NULL); FLUSH_CYCLES(tmp); + emith_sync_t(tmp); emit_move_r_imm32(SHR_PC, pc); rcache_flush(); @@ -5553,7 +5578,7 @@ u16 scan_block(u32 base_pc, int is_slave, u8 *op_flags, u32 *end_pc_out, case 0x06: // MOV.L @Rm+,Rn 0110nnnnmmmm0110 opd->dest = BITMASK2(GET_Rm(), GET_Rn()); opd->source = BITMASK2(GET_Rm(), SHR_MEM); - break; + break; case 0x00: // MOV.B @Rm,Rn 0110nnnnmmmm0000 case 0x01: // MOV.W @Rm,Rn 0110nnnnmmmm0001 case 0x02: // MOV.L @Rm,Rn 0110nnnnmmmm0010 @@ -5596,12 +5621,12 @@ u16 scan_block(u32 base_pc, int is_slave, u8 *op_flags, u32 *end_pc_out, { case 0x0000: // MOV.B R0,@(disp,Rn) 10000000nnnndddd opd->source = BITMASK2(GET_Rm(), SHR_R0); - opd->dest = BITMASK1(SHR_MEM); + opd->dest = BITMASK1(SHR_MEM); opd->imm = (op & 0x0f); break; case 0x0100: // MOV.W R0,@(disp,Rn) 10000001nnnndddd opd->source = BITMASK2(GET_Rm(), SHR_R0); - opd->dest = BITMASK1(SHR_MEM); + opd->dest = BITMASK1(SHR_MEM); opd->imm = (op & 0x0f) * 2; break; case 0x0400: // MOV.B @(disp,Rm),R0 10000100mmmmdddd @@ -5760,7 +5785,7 @@ u16 scan_block(u32 base_pc, int is_slave, u8 *op_flags, u32 *end_pc_out, case 0x0e00: // XOR.B #imm,@(R0,GBR) 11001110iiiiiiii case 0x0f00: // OR.B #imm,@(R0,GBR) 11001111iiiiiiii opd->source = BITMASK3(SHR_GBR, SHR_R0, SHR_MEM); - opd->dest = BITMASK1(SHR_MEM); + opd->dest = BITMASK1(SHR_MEM); opd->imm = op & 0xff; opd->cycles = 3; break;