From 5cabc5ccfe180241a9086bd9bcbb1b5de8f3fc72 Mon Sep 17 00:00:00 2001 From: "Edgar E. Iglesias" Date: Mon, 10 Jan 2011 23:24:36 +0100 Subject: cris: Allow more TB chaining for crisv10 Signed-off-by: Edgar E. Iglesias --- target-cris/translate.c | 37 +++++++++++++++++++++++++++---------- 1 file changed, 27 insertions(+), 10 deletions(-) (limited to 'target-cris/translate.c') diff --git a/target-cris/translate.c b/target-cris/translate.c index 5184155302..9e403dc4f2 100644 --- a/target-cris/translate.c +++ b/target-cris/translate.c @@ -120,9 +120,10 @@ typedef struct DisasContext { unsigned int tb_flags; /* tb dependent flags. */ int is_jmp; -#define JMP_NOJMP 0 -#define JMP_DIRECT 1 -#define JMP_INDIRECT 2 +#define JMP_NOJMP 0 +#define JMP_DIRECT 1 +#define JMP_DIRECT_CC 2 +#define JMP_INDIRECT 3 int jmp; /* 0=nojmp, 1=direct, 2=indirect. */ uint32_t jmp_pc; @@ -1127,7 +1128,7 @@ static void gen_tst_cc (DisasContext *dc, TCGv cc, int cond) static void cris_store_direct_jmp(DisasContext *dc) { /* Store the direct jmp state into the cpu-state. */ - if (dc->jmp == JMP_DIRECT) { + if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) { tcg_gen_movi_tl(env_btarget, dc->jmp_pc); dc->jmp = JMP_INDIRECT; } @@ -1139,7 +1140,7 @@ static void cris_prepare_cc_branch (DisasContext *dc, /* This helps us re-schedule the micro-code to insns in delay-slots before the actual jump. */ dc->delayed_branch = 2; - dc->jmp = JMP_DIRECT; + dc->jmp = JMP_DIRECT_CC; dc->jmp_pc = dc->pc + offset; gen_tst_cc (dc, env_btaken, cond); @@ -1155,7 +1156,9 @@ static inline void cris_prepare_jmp (DisasContext *dc, unsigned int type) before the actual jump. */ dc->delayed_branch = 2; dc->jmp = type; - tcg_gen_movi_tl(env_btaken, 1); + if (type == JMP_INDIRECT) { + tcg_gen_movi_tl(env_btaken, 1); + } } static void gen_load64(DisasContext *dc, TCGv_i64 dst, TCGv addr) @@ -3193,10 +3196,13 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, qemu_log_try_set_file(stderr); - if (env->pregs[PR_VR] == 32) + if (env->pregs[PR_VR] == 32) { dc->decoder = crisv32_decoder; - else + dc->clear_locked_irq = 0; + } else { dc->decoder = crisv10_decoder; + dc->clear_locked_irq = 1; + } /* Odd PC indicates that branch is rexecuting due to exception in the * delayslot, like in real hw. @@ -3218,7 +3224,6 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, dc->cc_mask = 0; dc->update_cc = 0; dc->clear_prefix = 0; - dc->clear_locked_irq = 1; cris_update_cc_op(dc, CC_OP_FLAGS, 4); dc->cc_size_uptodate = -1; @@ -3312,7 +3317,14 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, || (dc->flags_x != (tb->flags & X_FLAG))) { cris_store_direct_jmp(dc); } - if (dc->jmp == JMP_DIRECT) { + + if (dc->clear_locked_irq) { + dc->clear_locked_irq = 0; + t_gen_mov_env_TN(locked_irq, + tcg_const_tl(0)); + } + + if (dc->jmp == JMP_DIRECT_CC) { int l1; l1 = gen_new_label(); @@ -3326,6 +3338,11 @@ gen_intermediate_code_internal(CPUState *env, TranslationBlock *tb, gen_goto_tb(dc, 0, dc->pc); dc->is_jmp = DISAS_TB_JUMP; dc->jmp = JMP_NOJMP; + } else if (dc->jmp == JMP_DIRECT) { + cris_evaluate_flags(dc); + gen_goto_tb(dc, 0, dc->jmp_pc); + dc->is_jmp = DISAS_TB_JUMP; + dc->jmp = JMP_NOJMP; } else { t_gen_cc_jmp(env_btarget, tcg_const_tl(dc->pc)); -- cgit v1.2.1