diff options
| author | edgar_igl <edgar_igl@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-05-09 08:14:05 +0000 |
|---|---|---|
| committer | edgar_igl <edgar_igl@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-05-09 08:14:05 +0000 |
| commit | 73e517236c9304c09ccd2b95ceb56068a248be3d (patch) | |
| tree | 5971f61feb337c7357c45aa0d2c85ff0b2eaf6ac /target-cris | |
| parent | e83a86737fa1569df3f198d912b8e51de2edf63a (diff) | |
CRIS: Concistent use of btarget and make it possible to single-step over delayslots.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4389 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-cris')
| -rw-r--r-- | target-cris/translate.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/target-cris/translate.c b/target-cris/translate.c index 854878ebf5..0d8097a288 100644 --- a/target-cris/translate.c +++ b/target-cris/translate.c @@ -2509,7 +2509,7 @@ static unsigned int dec_jasc_im(DisasContext *dc) cris_cc_mask(dc, 0); /* Store the return address in Pd. */ tcg_gen_movi_tl(cpu_T[0], imm); - t_gen_mov_env_TN(btarget, cpu_T[0]); + tcg_gen_mov_tl(env_btarget, cpu_T[0]); tcg_gen_movi_tl(cpu_T[0], dc->pc + 8 + 4); t_gen_mov_preg_TN(dc->op2, cpu_T[0]); cris_prepare_dyn_jmp(dc); @@ -2522,7 +2522,7 @@ static unsigned int dec_jasc_r(DisasContext *dc) cris_cc_mask(dc, 0); /* Store the return address in Pd. */ t_gen_mov_TN_reg(cpu_T[0], dc->op1); - t_gen_mov_env_TN(btarget, cpu_T[0]); + tcg_gen_mov_tl(env_btarget, cpu_T[0]); tcg_gen_movi_tl(cpu_T[0], dc->pc + 4 + 4); t_gen_mov_preg_TN(dc->op2, cpu_T[0]); cris_prepare_dyn_jmp(dc); @@ -2557,7 +2557,7 @@ static unsigned int dec_bas_im(DisasContext *dc) cris_cc_mask(dc, 0); /* Stor the return address in Pd. */ tcg_gen_movi_tl(cpu_T[0], dc->pc + simm); - t_gen_mov_env_TN(btarget, cpu_T[0]); + tcg_gen_mov_tl(env_btarget, cpu_T[0]); tcg_gen_movi_tl(cpu_T[0], dc->pc + 8); t_gen_mov_preg_TN(dc->op2, cpu_T[0]); cris_prepare_dyn_jmp(dc); @@ -2573,7 +2573,7 @@ static unsigned int dec_basc_im(DisasContext *dc) cris_cc_mask(dc, 0); /* Stor the return address in Pd. */ tcg_gen_movi_tl(cpu_T[0], dc->pc + simm); - t_gen_mov_env_TN(btarget, cpu_T[0]); + tcg_gen_mov_tl(env_btarget, cpu_T[0]); tcg_gen_movi_tl(cpu_T[0], dc->pc + 12); t_gen_mov_preg_TN(dc->op2, cpu_T[0]); cris_prepare_dyn_jmp(dc); @@ -2813,10 +2813,12 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, if (!logfile) logfile = stderr; - if (tb->pc & 1) - cpu_abort(env, "unaligned pc=%x erp=%x\n", - env->pc, env->pregs[PR_ERP]); - pc_start = tb->pc; + /* Odd PC indicates that branch is rexecuting due to exception in the + * delayslot, like in real hw. + * FIXME: we need to handle the case were the branch and the insn in + * the delayslot do not share pages. + */ + pc_start = tb->pc & ~1; dc->env = env; dc->tb = tb; @@ -2905,14 +2907,16 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, } } - if (env->singlestep_enabled) + /* If we are rexecuting a branch due to exceptions on + delay slots dont break. */ + if (!(tb->pc & 1) && env->singlestep_enabled) break; } while (!dc->is_jmp && gen_opc_ptr < gen_opc_end && ((dc->pc < next_page_start) || dc->delayed_branch)); if (dc->delayed_branch == 1) { /* Reexecute the last insn. */ - dc->pc = dc->ppc; + dc->pc = dc->ppc | 1; } if (!dc->is_jmp) { |