diff options
| -rw-r--r-- | target-alpha/op_helper.c | 49 |
1 files changed, 30 insertions, 19 deletions
diff --git a/target-alpha/op_helper.c b/target-alpha/op_helper.c index 672940ee2c..fc5020ad24 100644 --- a/target-alpha/op_helper.c +++ b/target-alpha/op_helper.c @@ -25,20 +25,42 @@ /*****************************************************************************/ /* Exceptions processing helpers */ -void QEMU_NORETURN helper_excp (int excp, int error) + +/* This should only be called from translate, via gen_excp. + We expect that ENV->PC has already been updated. */ +void QEMU_NORETURN helper_excp(int excp, int error) +{ + env->exception_index = excp; + env->error_code = error; + cpu_loop_exit(); +} + +static void do_restore_state(void *retaddr) +{ + unsigned long pc = (unsigned long)retaddr; + + if (pc) { + TranslationBlock *tb = tb_find_pc(pc); + if (tb) { + cpu_restore_state(tb, env, pc); + } + } +} + +/* This may be called from any of the helpers to set up EXCEPTION_INDEX. */ +static void QEMU_NORETURN dynamic_excp(int excp, int error) { env->exception_index = excp; env->error_code = error; + do_restore_state(GETPC()); cpu_loop_exit(); } static void QEMU_NORETURN arith_excp(int exc, uint64_t mask) { - env->exception_index = EXCP_ARITH; - env->error_code = 0; env->trap_arg0 = exc; env->trap_arg1 = mask; - cpu_loop_exit(); + dynamic_excp(EXCP_ARITH, 0); } uint64_t helper_load_pcc (void) @@ -521,7 +543,7 @@ static inline float32 f_to_float32(uint64_t a) if (unlikely(!exp && mant_sig)) { /* Reserved operands / Dirty zero */ - helper_excp(EXCP_OPCDEC, 0); + dynamic_excp(EXCP_OPCDEC, 0); } if (exp < 3) { @@ -651,7 +673,7 @@ static inline float64 g_to_float64(uint64_t a) if (!exp && mant_sig) { /* Reserved operands / Dirty zero */ - helper_excp(EXCP_OPCDEC, 0); + dynamic_excp(EXCP_OPCDEC, 0); } if (exp < 3) { @@ -1260,9 +1282,7 @@ uint64_t helper_stq_c_phys(uint64_t p, uint64_t v) /* XXX: fix it to restore all registers */ void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr) { - TranslationBlock *tb; CPUState *saved_env; - unsigned long pc; int ret; /* XXX: hack to restore env in all cases, even if not called from @@ -1270,17 +1290,8 @@ void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr) saved_env = env; env = cpu_single_env; ret = cpu_alpha_handle_mmu_fault(env, addr, is_write, mmu_idx, 1); - if (!likely(ret == 0)) { - if (likely(retaddr)) { - /* now we have a real cpu fault */ - pc = (unsigned long)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); - } - } + if (unlikely(ret != 0)) { + do_restore_state(retaddr); /* Exception index and error code are already set */ cpu_loop_exit(); } |