diff options
| -rw-r--r-- | target-sparc/translate.c | 505 |
1 files changed, 273 insertions, 232 deletions
diff --git a/target-sparc/translate.c b/target-sparc/translate.c index 0b056e5cf7..532ad3e577 100644 --- a/target-sparc/translate.c +++ b/target-sparc/translate.c @@ -1976,97 +1976,161 @@ static inline void gen_ne_fop_QD(DisasContext *dc, int rd, int rs, /* asi moves */ #if !defined(CONFIG_USER_ONLY) || defined(TARGET_SPARC64) -static TCGv_i32 gen_get_asi(DisasContext *dc, int insn) -{ +typedef enum { + GET_ASI_HELPER, + GET_ASI_EXCP, +} ASIType; + +typedef struct { + ASIType type; int asi; +} DisasASI; +static DisasASI get_asi(DisasContext *dc, int insn) +{ + int asi = GET_FIELD(insn, 19, 26); + ASIType type = GET_ASI_HELPER; + +#ifndef TARGET_SPARC64 + /* Before v9, all asis are immediate and privileged. */ if (IS_IMM) { -#ifdef TARGET_SPARC64 - asi = dc->asi; -#else gen_exception(dc, TT_ILL_INSN); - asi = 0; -#endif + type = GET_ASI_EXCP; + } else if (supervisor(dc) + /* Note that LEON accepts ASI_USERDATA in user mode, for + use with CASA. Also note that previous versions of + QEMU allowed ASI_P for LEON, which is incorrect. */ + || (asi == 0xa + && (dc->def->features & CPU_FEATURE_CASA))) { } else { - asi = GET_FIELD(insn, 19, 26); + gen_exception(dc, TT_PRIV_INSN); + type = GET_ASI_EXCP; + } +#else + if (IS_IMM) { + asi = dc->asi; } - return tcg_const_i32(asi); +#endif + + return (DisasASI){ type, asi }; } static void gen_ld_asi(DisasContext *dc, TCGv dst, TCGv addr, int insn, int size, int sign) { - TCGv_i32 r_asi, r_size, r_sign; + DisasASI da = get_asi(dc, insn); - r_asi = gen_get_asi(dc, insn); - r_size = tcg_const_i32(size); - r_sign = tcg_const_i32(sign); + switch (da.type) { + case GET_ASI_EXCP: + break; + default: + { + TCGv_i32 r_asi = tcg_const_i32(da.asi); + TCGv_i32 r_size = tcg_const_i32(size); + TCGv_i32 r_sign = tcg_const_i32(sign); + + save_state(dc); #ifdef TARGET_SPARC64 - gen_helper_ld_asi(dst, cpu_env, addr, r_asi, r_size, r_sign); + gen_helper_ld_asi(dst, cpu_env, addr, r_asi, r_size, r_sign); #else - { - TCGv_i64 t64 = tcg_temp_new_i64(); - gen_helper_ld_asi(t64, cpu_env, addr, r_asi, r_size, r_sign); - tcg_gen_trunc_i64_tl(dst, t64); - tcg_temp_free_i64(t64); - } + { + TCGv_i64 t64 = tcg_temp_new_i64(); + gen_helper_ld_asi(t64, cpu_env, addr, r_asi, r_size, r_sign); + tcg_gen_trunc_i64_tl(dst, t64); + tcg_temp_free_i64(t64); + } #endif - tcg_temp_free_i32(r_sign); - tcg_temp_free_i32(r_size); - tcg_temp_free_i32(r_asi); + tcg_temp_free_i32(r_sign); + tcg_temp_free_i32(r_size); + tcg_temp_free_i32(r_asi); + } + break; + } } static void gen_st_asi(DisasContext *dc, TCGv src, TCGv addr, int insn, int size) { - TCGv_i32 r_asi, r_size; + DisasASI da = get_asi(dc, insn); - r_asi = gen_get_asi(dc, insn); - r_size = tcg_const_i32(size); + switch (da.type) { + case GET_ASI_EXCP: + break; + default: + { + TCGv_i32 r_asi = tcg_const_i32(da.asi); + TCGv_i32 r_size = tcg_const_i32(size); + + save_state(dc); #ifdef TARGET_SPARC64 - gen_helper_st_asi(cpu_env, addr, src, r_asi, r_size); + gen_helper_st_asi(cpu_env, addr, src, r_asi, r_size); #else - { - TCGv_i64 t64 = tcg_temp_new_i64(); - tcg_gen_extu_tl_i64(t64, src); - gen_helper_st_asi(cpu_env, addr, t64, r_asi, r_size); - tcg_temp_free_i64(t64); - } + { + TCGv_i64 t64 = tcg_temp_new_i64(); + tcg_gen_extu_tl_i64(t64, src); + gen_helper_st_asi(cpu_env, addr, t64, r_asi, r_size); + tcg_temp_free_i64(t64); + } #endif - tcg_temp_free_i32(r_size); - tcg_temp_free_i32(r_asi); + tcg_temp_free_i32(r_size); + tcg_temp_free_i32(r_asi); + + /* A write to a TLB register may alter page maps. End the TB. */ + dc->npc = DYNAMIC_PC; + } + break; + } } static void gen_swap_asi(DisasContext *dc, TCGv dst, TCGv src, TCGv addr, int insn) { - TCGv_i32 r_asi, r_size, r_sign; - TCGv_i64 s64, t64 = tcg_temp_new_i64(); - - r_asi = gen_get_asi(dc, insn); - r_size = tcg_const_i32(4); - r_sign = tcg_const_i32(0); - gen_helper_ld_asi(t64, cpu_env, addr, r_asi, r_size, r_sign); - tcg_temp_free_i32(r_sign); - - s64 = tcg_temp_new_i64(); - tcg_gen_extu_tl_i64(s64, src); - gen_helper_st_asi(cpu_env, addr, s64, r_asi, r_size); - tcg_temp_free_i64(s64); - tcg_temp_free_i32(r_size); - tcg_temp_free_i32(r_asi); + DisasASI da = get_asi(dc, insn); - tcg_gen_trunc_i64_tl(dst, t64); - tcg_temp_free_i64(t64); + switch (da.type) { + case GET_ASI_EXCP: + break; + default: + { + TCGv_i32 r_asi = tcg_const_i32(da.asi); + TCGv_i32 r_size = tcg_const_i32(4); + TCGv_i32 r_sign = tcg_const_i32(0); + TCGv_i64 s64, t64; + + save_state(dc); + t64 = tcg_temp_new_i64(); + gen_helper_ld_asi(t64, cpu_env, addr, r_asi, r_size, r_sign); + tcg_temp_free_i32(r_sign); + + s64 = tcg_temp_new_i64(); + tcg_gen_extu_tl_i64(s64, src); + gen_helper_st_asi(cpu_env, addr, s64, r_asi, r_size); + tcg_temp_free_i64(s64); + tcg_temp_free_i32(r_size); + tcg_temp_free_i32(r_asi); + + tcg_gen_trunc_i64_tl(dst, t64); + tcg_temp_free_i64(t64); + } + break; + } } static void gen_cas_asi(DisasContext *dc, TCGv addr, TCGv val2, int insn, int rd) { - TCGv val1 = gen_load_gpr(dc, rd); - TCGv dst = gen_dest_gpr(dc, rd); - TCGv_i32 r_asi = gen_get_asi(dc, insn); + DisasASI da = get_asi(dc, insn); + TCGv val1, dst; + TCGv_i32 r_asi; + if (da.type == GET_ASI_EXCP) { + return; + } + + save_state(dc); + val1 = gen_load_gpr(dc, rd); + dst = gen_dest_gpr(dc, rd); + r_asi = tcg_const_i32(da.asi); gen_helper_cas_asi(dst, cpu_env, addr, val1, val2, r_asi); tcg_temp_free_i32(r_asi); gen_store_gpr(dc, rd, dst); @@ -2074,23 +2138,34 @@ static void gen_cas_asi(DisasContext *dc, TCGv addr, TCGv val2, static void gen_ldstub_asi(DisasContext *dc, TCGv dst, TCGv addr, int insn) { - TCGv_i32 r_asi, r_size, r_sign; - TCGv_i64 s64, d64 = tcg_temp_new_i64(); - - r_asi = gen_get_asi(dc, insn); - r_size = tcg_const_i32(1); - r_sign = tcg_const_i32(0); - gen_helper_ld_asi(d64, cpu_env, addr, r_asi, r_size, r_sign); - tcg_temp_free_i32(r_sign); - - s64 = tcg_const_i64(0xff); - gen_helper_st_asi(cpu_env, addr, s64, r_asi, r_size); - tcg_temp_free_i64(s64); - tcg_temp_free_i32(r_size); - tcg_temp_free_i32(r_asi); + DisasASI da = get_asi(dc, insn); - tcg_gen_trunc_i64_tl(dst, d64); - tcg_temp_free_i64(d64); + switch (da.type) { + case GET_ASI_EXCP: + break; + default: + { + TCGv_i32 r_asi = tcg_const_i32(da.asi); + TCGv_i32 r_size = tcg_const_i32(1); + TCGv_i32 r_sign = tcg_const_i32(0); + TCGv_i64 s64, t64; + + save_state(dc); + t64 = tcg_temp_new_i64(); + gen_helper_ld_asi(t64, cpu_env, addr, r_asi, r_size, r_sign); + tcg_temp_free_i32(r_sign); + + s64 = tcg_const_i64(0xff); + gen_helper_st_asi(cpu_env, addr, s64, r_asi, r_size); + tcg_temp_free_i64(s64); + tcg_temp_free_i32(r_size); + tcg_temp_free_i32(r_asi); + + tcg_gen_trunc_i64_tl(dst, t64); + tcg_temp_free_i64(t64); + } + break; + } } #endif @@ -2098,66 +2173,115 @@ static void gen_ldstub_asi(DisasContext *dc, TCGv dst, TCGv addr, int insn) static void gen_ldf_asi(DisasContext *dc, TCGv addr, int insn, int size, int rd) { - TCGv_i32 r_asi, r_size, r_rd; + DisasASI da = get_asi(dc, insn); - r_asi = gen_get_asi(dc, insn); - r_size = tcg_const_i32(size); - r_rd = tcg_const_i32(rd); - gen_helper_ldf_asi(cpu_env, addr, r_asi, r_size, r_rd); - tcg_temp_free_i32(r_rd); - tcg_temp_free_i32(r_size); - tcg_temp_free_i32(r_asi); + switch (da.type) { + case GET_ASI_EXCP: + break; + default: + { + TCGv_i32 r_asi = tcg_const_i32(da.asi); + TCGv_i32 r_size = tcg_const_i32(size); + TCGv_i32 r_rd = tcg_const_i32(rd); + + save_state(dc); + gen_helper_ldf_asi(cpu_env, addr, r_asi, r_size, r_rd); + tcg_temp_free_i32(r_rd); + tcg_temp_free_i32(r_size); + tcg_temp_free_i32(r_asi); + } + break; + } } static void gen_stf_asi(DisasContext *dc, TCGv addr, int insn, int size, int rd) { - TCGv_i32 r_asi, r_size, r_rd; + DisasASI da = get_asi(dc, insn); - r_asi = gen_get_asi(dc, insn); - r_size = tcg_const_i32(size); - r_rd = tcg_const_i32(rd); - gen_helper_stf_asi(cpu_env, addr, r_asi, r_size, r_rd); - tcg_temp_free_i32(r_rd); - tcg_temp_free_i32(r_size); - tcg_temp_free_i32(r_asi); + switch (da.type) { + case GET_ASI_EXCP: + break; + default: + { + TCGv_i32 r_asi = tcg_const_i32(da.asi); + TCGv_i32 r_size = tcg_const_i32(size); + TCGv_i32 r_rd = tcg_const_i32(rd); + + save_state(dc); + gen_helper_stf_asi(cpu_env, addr, r_asi, r_size, r_rd); + tcg_temp_free_i32(r_rd); + tcg_temp_free_i32(r_size); + tcg_temp_free_i32(r_asi); + } + break; + } } static void gen_ldda_asi(DisasContext *dc, TCGv hi, TCGv addr, int insn, int rd) { - TCGv_i32 r_asi, r_rd; + DisasASI da = get_asi(dc, insn); - r_asi = gen_get_asi(dc, insn); - r_rd = tcg_const_i32(rd); - gen_helper_ldda_asi(cpu_env, addr, r_asi, r_rd); - tcg_temp_free_i32(r_rd); - tcg_temp_free_i32(r_asi); + switch (da.type) { + case GET_ASI_EXCP: + break; + default: + { + TCGv_i32 r_asi = tcg_const_i32(da.asi); + TCGv_i32 r_rd = tcg_const_i32(rd); + + save_state(dc); + gen_helper_ldda_asi(cpu_env, addr, r_asi, r_rd); + tcg_temp_free_i32(r_rd); + tcg_temp_free_i32(r_asi); + } + break; + } } static void gen_stda_asi(DisasContext *dc, TCGv hi, TCGv addr, int insn, int rd) { - TCGv_i32 r_asi, r_size; + DisasASI da = get_asi(dc, insn); TCGv lo = gen_load_gpr(dc, rd + 1); - TCGv_i64 t64 = tcg_temp_new_i64(); - tcg_gen_concat_tl_i64(t64, lo, hi); - r_asi = gen_get_asi(dc, insn); - r_size = tcg_const_i32(8); - gen_helper_st_asi(cpu_env, addr, t64, r_asi, r_size); - tcg_temp_free_i32(r_size); - tcg_temp_free_i32(r_asi); - tcg_temp_free_i64(t64); + switch (da.type) { + case GET_ASI_EXCP: + break; + default: + { + TCGv_i32 r_asi = tcg_const_i32(da.asi); + TCGv_i32 r_size = tcg_const_i32(8); + TCGv_i64 t64; + + save_state(dc); + + t64 = tcg_temp_new_i64(); + tcg_gen_concat_tl_i64(t64, lo, hi); + gen_helper_st_asi(cpu_env, addr, t64, r_asi, r_size); + tcg_temp_free_i32(r_size); + tcg_temp_free_i32(r_asi); + tcg_temp_free_i64(t64); + } + break; + } } static void gen_casx_asi(DisasContext *dc, TCGv addr, TCGv val2, int insn, int rd) { + DisasASI da = get_asi(dc, insn); TCGv val1 = gen_load_gpr(dc, rd); TCGv dst = gen_dest_gpr(dc, rd); - TCGv_i32 r_asi = gen_get_asi(dc, insn); + TCGv_i32 r_asi; + if (da.type == GET_ASI_EXCP) { + return; + } + + save_state(dc); + r_asi = tcg_const_i32(da.asi); gen_helper_casx_asi(dst, cpu_env, addr, val1, val2, r_asi); tcg_temp_free_i32(r_asi); gen_store_gpr(dc, rd, dst); @@ -2167,46 +2291,64 @@ static void gen_casx_asi(DisasContext *dc, TCGv addr, TCGv val2, static void gen_ldda_asi(DisasContext *dc, TCGv hi, TCGv addr, int insn, int rd) { - TCGv_i32 r_asi, r_size, r_sign; - TCGv t; - TCGv_i64 t64; - - r_asi = gen_get_asi(dc, insn); - r_size = tcg_const_i32(8); - r_sign = tcg_const_i32(0); - t64 = tcg_temp_new_i64(); - gen_helper_ld_asi(t64, cpu_env, addr, r_asi, r_size, r_sign); - tcg_temp_free_i32(r_sign); - tcg_temp_free_i32(r_size); - tcg_temp_free_i32(r_asi); - /* ??? Work around an apparent bug in Ubuntu gcc 4.8.2-10ubuntu2+12, whereby "rd + 1" elicits "error: array subscript is above array". Since we have already asserted that rd is even, the semantics are unchanged. */ - t = gen_dest_gpr(dc, rd | 1); - tcg_gen_trunc_i64_tl(t, t64); - gen_store_gpr(dc, rd | 1, t); + DisasASI da = get_asi(dc, insn); + TCGv lo = gen_dest_gpr(dc, rd | 1); + TCGv_i64 t64 = tcg_temp_new_i64(); + + switch (da.type) { + case GET_ASI_EXCP: + tcg_temp_free_i64(t64); + return; + default: + { + TCGv_i32 r_asi = tcg_const_i32(da.asi); + TCGv_i32 r_size = tcg_const_i32(8); + TCGv_i32 r_sign = tcg_const_i32(0); + + save_state(dc); + gen_helper_ld_asi(t64, cpu_env, addr, r_asi, r_size, r_sign); + tcg_temp_free_i32(r_sign); + tcg_temp_free_i32(r_size); + tcg_temp_free_i32(r_asi); + } + break; + } - tcg_gen_shri_i64(t64, t64, 32); - tcg_gen_trunc_i64_tl(hi, t64); + tcg_gen_extr_i64_i32(lo, hi, t64); tcg_temp_free_i64(t64); + gen_store_gpr(dc, rd | 1, lo); gen_store_gpr(dc, rd, hi); } static void gen_stda_asi(DisasContext *dc, TCGv hi, TCGv addr, int insn, int rd) { - TCGv_i32 r_asi, r_size; + DisasASI da = get_asi(dc, insn); TCGv lo = gen_load_gpr(dc, rd + 1); TCGv_i64 t64 = tcg_temp_new_i64(); tcg_gen_concat_tl_i64(t64, lo, hi); - r_asi = gen_get_asi(dc, insn); - r_size = tcg_const_i32(8); - gen_helper_st_asi(cpu_env, addr, t64, r_asi, r_size); - tcg_temp_free_i32(r_size); - tcg_temp_free_i32(r_asi); + + switch (da.type) { + case GET_ASI_EXCP: + break; + default: + { + TCGv_i32 r_asi = tcg_const_i32(da.asi); + TCGv_i32 r_size = tcg_const_i32(8); + + save_state(dc); + gen_helper_st_asi(cpu_env, addr, t64, r_asi, r_size); + tcg_temp_free_i32(r_size); + tcg_temp_free_i32(r_asi); + } + break; + } + tcg_temp_free_i64(t64); } #endif @@ -4691,87 +4833,32 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn) break; #if !defined(CONFIG_USER_ONLY) || defined(TARGET_SPARC64) case 0x10: /* lda, V9 lduwa, load word alternate */ -#ifndef TARGET_SPARC64 - if (IS_IMM) - goto illegal_insn; - if (!supervisor(dc)) - goto priv_insn; -#endif - save_state(dc); gen_ld_asi(dc, cpu_val, cpu_addr, insn, 4, 0); break; case 0x11: /* lduba, load unsigned byte alternate */ -#ifndef TARGET_SPARC64 - if (IS_IMM) - goto illegal_insn; - if (!supervisor(dc)) - goto priv_insn; -#endif - save_state(dc); gen_ld_asi(dc, cpu_val, cpu_addr, insn, 1, 0); break; case 0x12: /* lduha, load unsigned halfword alternate */ -#ifndef TARGET_SPARC64 - if (IS_IMM) - goto illegal_insn; - if (!supervisor(dc)) - goto priv_insn; -#endif - save_state(dc); gen_ld_asi(dc, cpu_val, cpu_addr, insn, 2, 0); break; case 0x13: /* ldda, load double word alternate */ -#ifndef TARGET_SPARC64 - if (IS_IMM) - goto illegal_insn; - if (!supervisor(dc)) - goto priv_insn; -#endif - if (rd & 1) + if (rd & 1) { goto illegal_insn; - save_state(dc); + } gen_ldda_asi(dc, cpu_val, cpu_addr, insn, rd); goto skip_move; case 0x19: /* ldsba, load signed byte alternate */ -#ifndef TARGET_SPARC64 - if (IS_IMM) - goto illegal_insn; - if (!supervisor(dc)) - goto priv_insn; -#endif - save_state(dc); gen_ld_asi(dc, cpu_val, cpu_addr, insn, 1, 1); break; case 0x1a: /* ldsha, load signed halfword alternate */ -#ifndef TARGET_SPARC64 - if (IS_IMM) - goto illegal_insn; - if (!supervisor(dc)) - goto priv_insn; -#endif - save_state(dc); gen_ld_asi(dc, cpu_val, cpu_addr, insn, 2, 1); break; case 0x1d: /* ldstuba -- XXX: should be atomically */ -#ifndef TARGET_SPARC64 - if (IS_IMM) - goto illegal_insn; - if (!supervisor(dc)) - goto priv_insn; -#endif - save_state(dc); gen_ldstub_asi(dc, cpu_val, cpu_addr, insn); break; case 0x1f: /* swapa, swap reg with alt. memory. Also atomically */ CHECK_IU_FEATURE(dc, SWAP); -#ifndef TARGET_SPARC64 - if (IS_IMM) - goto illegal_insn; - if (!supervisor(dc)) - goto priv_insn; -#endif - save_state(dc); cpu_src1 = gen_load_gpr(dc, rd); gen_swap_asi(dc, cpu_val, cpu_src1, cpu_addr, insn); break; @@ -4793,11 +4880,9 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn) tcg_gen_qemu_ld64(cpu_val, cpu_addr, dc->mem_idx); break; case 0x18: /* V9 ldswa */ - save_state(dc); gen_ld_asi(dc, cpu_val, cpu_addr, insn, 4, 1); break; case 0x1b: /* V9 ldxa */ - save_state(dc); gen_ld_asi(dc, cpu_val, cpu_addr, insn, 8, 0); break; case 0x2d: /* V9 prefetch, no effect */ @@ -4806,7 +4891,6 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn) if (gen_trap_ifnofpu(dc)) { goto jmp_insn; } - save_state(dc); gen_ldf_asi(dc, cpu_addr, insn, 4, rd); gen_update_fprs_dirty(rd); goto skip_move; @@ -4814,7 +4898,6 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn) if (gen_trap_ifnofpu(dc)) { goto jmp_insn; } - save_state(dc); gen_ldf_asi(dc, cpu_addr, insn, 8, DFPREG(rd)); gen_update_fprs_dirty(DFPREG(rd)); goto skip_move; @@ -4825,7 +4908,6 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn) if (gen_trap_ifnofpu(dc)) { goto jmp_insn; } - save_state(dc); gen_ldf_asi(dc, cpu_addr, insn, 16, QFPREG(rd)); gen_update_fprs_dirty(QFPREG(rd)); goto skip_move; @@ -4933,51 +5015,19 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn) break; #if !defined(CONFIG_USER_ONLY) || defined(TARGET_SPARC64) case 0x14: /* sta, V9 stwa, store word alternate */ -#ifndef TARGET_SPARC64 - if (IS_IMM) - goto illegal_insn; - if (!supervisor(dc)) - goto priv_insn; -#endif - save_state(dc); gen_st_asi(dc, cpu_val, cpu_addr, insn, 4); - dc->npc = DYNAMIC_PC; break; case 0x15: /* stba, store byte alternate */ -#ifndef TARGET_SPARC64 - if (IS_IMM) - goto illegal_insn; - if (!supervisor(dc)) - goto priv_insn; -#endif - save_state(dc); gen_st_asi(dc, cpu_val, cpu_addr, insn, 1); - dc->npc = DYNAMIC_PC; break; case 0x16: /* stha, store halfword alternate */ -#ifndef TARGET_SPARC64 - if (IS_IMM) - goto illegal_insn; - if (!supervisor(dc)) - goto priv_insn; -#endif - save_state(dc); gen_st_asi(dc, cpu_val, cpu_addr, insn, 2); - dc->npc = DYNAMIC_PC; break; case 0x17: /* stda, store double word alternate */ -#ifndef TARGET_SPARC64 - if (IS_IMM) + if (rd & 1) { goto illegal_insn; - if (!supervisor(dc)) - goto priv_insn; -#endif - if (rd & 1) - goto illegal_insn; - else { - save_state(dc); - gen_stda_asi(dc, cpu_val, cpu_addr, insn, rd); } + gen_stda_asi(dc, cpu_val, cpu_addr, insn, rd); break; #endif #ifdef TARGET_SPARC64 @@ -4986,9 +5036,7 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn) tcg_gen_qemu_st64(cpu_val, cpu_addr, dc->mem_idx); break; case 0x1e: /* V9 stxa */ - save_state(dc); gen_st_asi(dc, cpu_val, cpu_addr, insn, 8); - dc->npc = DYNAMIC_PC; break; #endif default: @@ -5105,13 +5153,6 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn) case 0x3c: /* V9 or LEON3 casa */ #ifndef TARGET_SPARC64 CHECK_IU_FEATURE(dc, CASA); - if (IS_IMM) { - goto illegal_insn; - } - /* LEON3 allows CASA from user space with ASI 0xa */ - if ((GET_FIELD(insn, 19, 26) != 0xa) && !supervisor(dc)) { - goto priv_insn; - } #endif rs2 = GET_FIELD(insn, 27, 31); cpu_src2 = gen_load_gpr(dc, rs2); |