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| author | Max Filippov <jcmvbkbc@gmail.com> | 2014-02-07 15:57:22 +0400 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2014-02-24 04:47:01 +0400 |
| commit | e848dd4248230c0463841a16d1fa9eb054a2d211 (patch) | |
| tree | 73d214173bd6e72b4e9c9e9237a18e0c19f91d28 /target-xtensa | |
| parent | 7c84259019a945e4ff275994b96c0de4496d2a5e (diff) | |
| download | qemu-e848dd4248230c0463841a16d1fa9eb054a2d211.tar.gz | |
target-xtensa: add basic checks to icache opcodes
Check privilege level for privileged instructions (IHU, III, IIU and IPFL
are privileged), memory accessibility for instructions that reference memory
(IH* and IPFL) and windowed register validity for all instruction cache
instructions.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'target-xtensa')
| -rw-r--r-- | target-xtensa/helper.h | 1 | ||||
| -rw-r--r-- | target-xtensa/op_helper.c | 5 | ||||
| -rw-r--r-- | target-xtensa/translate.c | 27 |
3 files changed, 33 insertions, 0 deletions
diff --git a/target-xtensa/helper.h b/target-xtensa/helper.h index 38d7157f34..322b04cd0a 100644 --- a/target-xtensa/helper.h +++ b/target-xtensa/helper.h @@ -25,6 +25,7 @@ DEF_HELPER_2(advance_ccount, void, env, i32) DEF_HELPER_1(check_interrupts, void, env) DEF_HELPER_3(check_atomctl, void, env, i32, i32) +DEF_HELPER_2(itlb_hit_test, void, env, i32) DEF_HELPER_2(wsr_rasid, void, env, i32) DEF_HELPER_FLAGS_3(rtlb0, TCG_CALL_NO_RWG_SE, i32, env, i32, i32) DEF_HELPER_FLAGS_3(rtlb1, TCG_CALL_NO_RWG_SE, i32, env, i32, i32) diff --git a/target-xtensa/op_helper.c b/target-xtensa/op_helper.c index 89a72b5678..509ba49d60 100644 --- a/target-xtensa/op_helper.c +++ b/target-xtensa/op_helper.c @@ -415,6 +415,11 @@ void HELPER(check_interrupts)(CPUXtensaState *env) check_interrupts(env); } +void HELPER(itlb_hit_test)(CPUXtensaState *env, uint32_t vaddr) +{ + get_page_addr_code(env, vaddr); +} + /*! * Check vaddr accessibility/cache attributes and raise an exception if * specified by the ATOMCTL SR. diff --git a/target-xtensa/translate.c b/target-xtensa/translate.c index 5ad900fde9..a59103d2f8 100644 --- a/target-xtensa/translate.c +++ b/target-xtensa/translate.c @@ -2332,22 +2332,42 @@ static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc) #undef gen_dcache_hit_test4 #undef gen_dcache_hit_test8 +#define gen_icache_hit_test(w, shift) do { \ + TCGv_i32 addr = tcg_temp_new_i32(); \ + gen_window_check1(dc, RRI##w##_S); \ + tcg_gen_movi_i32(cpu_pc, dc->pc); \ + tcg_gen_addi_i32(addr, cpu_R[RRI##w##_S], \ + RRI##w##_IMM##w << shift); \ + gen_helper_itlb_hit_test(cpu_env, addr); \ + tcg_temp_free(addr); \ + } while (0) + +#define gen_icache_hit_test4() gen_icache_hit_test(4, 4) +#define gen_icache_hit_test8() gen_icache_hit_test(8, 2) + case 12: /*IPFc*/ HAS_OPTION(XTENSA_OPTION_ICACHE); + gen_window_check1(dc, RRI8_S); break; case 13: /*ICEc*/ switch (OP1) { case 0: /*IPFLl*/ HAS_OPTION(XTENSA_OPTION_ICACHE_INDEX_LOCK); + gen_check_privilege(dc); + gen_icache_hit_test4(); break; case 2: /*IHUl*/ HAS_OPTION(XTENSA_OPTION_ICACHE_INDEX_LOCK); + gen_check_privilege(dc); + gen_icache_hit_test4(); break; case 3: /*IIUl*/ HAS_OPTION(XTENSA_OPTION_ICACHE_INDEX_LOCK); + gen_check_privilege(dc); + gen_window_check1(dc, RRI4_S); break; default: /*reserved*/ @@ -2358,10 +2378,13 @@ static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc) case 14: /*IHIc*/ HAS_OPTION(XTENSA_OPTION_ICACHE); + gen_icache_hit_test8(); break; case 15: /*IIIc*/ HAS_OPTION(XTENSA_OPTION_ICACHE); + gen_check_privilege(dc); + gen_window_check1(dc, RRI8_S); break; default: /*reserved*/ @@ -2370,6 +2393,10 @@ static void disas_xtensa_insn(CPUXtensaState *env, DisasContext *dc) } break; +#undef gen_icache_hit_test +#undef gen_icache_hit_test4 +#undef gen_icache_hit_test8 + case 9: /*L16SI*/ gen_load_store(ld16s, 1); break; |