From cddffe373928480e501f4d9b28b427e157b38f7d Mon Sep 17 00:00:00 2001 From: edgar_igl Date: Wed, 8 Oct 2008 14:22:17 +0000 Subject: CRIS: Partial EXS reg support and fixes for SPC. * Add partial support for the EXS (exception status) register. * Update SPC after each singlestep exception. * Remove special treatment of break 8. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5448 c046a42c-6fe2-441c-8c8c-71466251a162 --- target-cris/helper.c | 3 +++ target-cris/translate.c | 12 ++---------- 2 files changed, 5 insertions(+), 10 deletions(-) (limited to 'target-cris') diff --git a/target-cris/helper.c b/target-cris/helper.c index 7770403ace..2aa5a8e7d2 100644 --- a/target-cris/helper.c +++ b/target-cris/helper.c @@ -143,6 +143,9 @@ void do_interrupt(CPUState *env) break; } + /* Fill in the IDX field. */ + env->pregs[PR_EXS] = (ex_vec & 0xff) << 8; + if (env->dslot) { D(fprintf(logfile, "excp isr=%x PC=%x ds=%d SP=%x" " ERP=%x pid=%x ccs=%x cc=%d %x\n", diff --git a/target-cris/translate.c b/target-cris/translate.c index c030631696..86c455c4e8 100644 --- a/target-cris/translate.c +++ b/target-cris/translate.c @@ -196,10 +196,6 @@ static inline void t_gen_mov_TN_preg(TCGv tn, int r) tcg_gen_mov_tl(tn, tcg_const_tl(0)); else if (r == PR_VR) tcg_gen_mov_tl(tn, tcg_const_tl(32)); - else if (r == PR_EXS) { - printf("read from EXS!\n"); - tcg_gen_mov_tl(tn, cpu_PR[r]); - } else if (r == PR_EDA) { printf("read from EDA!\n"); tcg_gen_mov_tl(tn, cpu_PR[r]); @@ -2811,12 +2807,7 @@ static unsigned int dec_rfe_etc(DisasContext *dc) DIS(fprintf(logfile, "break %d\n", dc->op1)); cris_evaluate_flags (dc); /* break. */ - if (dc->op1 == 8) { - /* TODO: Find out whats special with brk8. */ - tcg_gen_movi_tl(env_pc, dc->pc); - } - else - tcg_gen_movi_tl(env_pc, dc->pc + 2); + tcg_gen_movi_tl(env_pc, dc->pc + 2); /* Breaks start at 16 in the exception vector. */ t_gen_mov_env_TN(trap_vector, @@ -3005,6 +2996,7 @@ cris_decoder(DisasContext *dc) cris_evaluate_flags (dc); t_gen_mov_env_TN(trap_vector, tcg_const_tl(3)); tcg_gen_movi_tl(env_pc, dc->pc + insn_len); + tcg_gen_movi_tl(cpu_PR[PR_SPC], dc->pc + insn_len); t_gen_raise_exception(EXCP_BREAK); gen_set_label(l1); } -- cgit v1.2.3