diff options
Diffstat (limited to 'target/nios2')
| -rw-r--r-- | target/nios2/cpu.h | 2 | ||||
| -rw-r--r-- | target/nios2/translate.c | 17 |
2 files changed, 17 insertions, 2 deletions
diff --git a/target/nios2/cpu.h b/target/nios2/cpu.h index 1a69ed7a49..d2ba0c5bbd 100644 --- a/target/nios2/cpu.h +++ b/target/nios2/cpu.h @@ -160,9 +160,9 @@ struct CPUNios2State { #if !defined(CONFIG_USER_ONLY) Nios2MMU mmu; - uint32_t irq_pending; #endif + int error_code; }; /** diff --git a/target/nios2/translate.c b/target/nios2/translate.c index 08d7ac5398..a759877519 100644 --- a/target/nios2/translate.c +++ b/target/nios2/translate.c @@ -636,6 +636,21 @@ static void divu(DisasContext *dc, uint32_t code, uint32_t flags) tcg_temp_free(t0); } +static void trap(DisasContext *dc, uint32_t code, uint32_t flags) +{ +#ifdef CONFIG_USER_ONLY + /* + * The imm5 field is not stored anywhere on real hw; the kernel + * has to load the insn and extract the field. But we can make + * things easier for cpu_loop if we pop this into env->error_code. + */ + R_TYPE(instr, code); + tcg_gen_st_i32(tcg_constant_i32(instr.imm5), cpu_env, + offsetof(CPUNios2State, error_code)); +#endif + t_gen_helper_raise_exception(dc, EXCP_TRAP); +} + static const Nios2Instruction r_type_instructions[] = { INSTRUCTION_ILLEGAL(), INSTRUCTION(eret), /* eret */ @@ -682,7 +697,7 @@ static const Nios2Instruction r_type_instructions[] = { INSTRUCTION_ILLEGAL(), INSTRUCTION_ILLEGAL(), INSTRUCTION_ILLEGAL(), - INSTRUCTION_FLG(gen_excp, EXCP_TRAP), /* trap */ + INSTRUCTION(trap), /* trap */ INSTRUCTION(wrctl), /* wrctl */ INSTRUCTION_ILLEGAL(), INSTRUCTION_FLG(gen_cmpxx, TCG_COND_LTU), /* cmpltu */ |