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| author | Richard Henderson <rth@twiddle.net> | 2014-02-27 19:31:57 -0500 |
|---|---|---|
| committer | Richard Henderson <rth@redhat.com> | 2014-04-16 12:12:59 -0400 |
| commit | cae1f6f3e60406c4f1a85dc11e0c9eb5a3ce466a (patch) | |
| tree | 365f0103ec7f06288ed7fbad8896a2613a668b73 /tcg/aarch64 | |
| parent | 81d8a5ee197eaf33c208b64bcc11c236f1216413 (diff) | |
| download | qemu-cae1f6f3e60406c4f1a85dc11e0c9eb5a3ce466a.zip qemu-cae1f6f3e60406c4f1a85dc11e0c9eb5a3ce466a.tar.gz qemu-cae1f6f3e60406c4f1a85dc11e0c9eb5a3ce466a.tar.bz2 | |
tcg-aarch64: Create tcg_out_brcond
Rearrange code to put the compare and branch in the same place.
Reviewed-by: Claudio Fontana <claudio.fontana@huawei.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg/aarch64')
| -rw-r--r-- | tcg/aarch64/tcg-target.c | 34 |
1 files changed, 14 insertions, 20 deletions
diff --git a/tcg/aarch64/tcg-target.c b/tcg/aarch64/tcg-target.c index 8b15d3b..5889a98 100644 --- a/tcg/aarch64/tcg-target.c +++ b/tcg/aarch64/tcg-target.c @@ -865,18 +865,6 @@ static inline void tcg_out_goto_cond_noaddr(TCGContext *s, TCGCond c) tcg_out_insn(s, 3202, B_C, c, old); } -static inline void tcg_out_goto_cond(TCGContext *s, TCGCond c, intptr_t target) -{ - intptr_t offset = (target - (intptr_t)s->code_ptr) / 4; - - if (offset < -0x40000 || offset >= 0x40000) { - /* out of 19bit range */ - tcg_abort(); - } - - tcg_out_insn(s, 3202, B_C, c, offset); -} - static inline void tcg_out_callr(TCGContext *s, TCGReg reg) { tcg_out_insn(s, 3207, BLR, reg); @@ -920,17 +908,24 @@ static inline void tcg_out_goto_label(TCGContext *s, int label_index) } } -static inline void tcg_out_goto_label_cond(TCGContext *s, - TCGCond c, int label_index) +static void tcg_out_brcond(TCGContext *s, TCGMemOp ext, TCGCond c, TCGArg a, + TCGArg b, bool b_const, int label) { - TCGLabel *l = &s->labels[label_index]; + TCGLabel *l = &s->labels[label]; + intptr_t offset; + + tcg_out_cmp(s, ext, a, b, b_const); if (!l->has_value) { - tcg_out_reloc(s, s->code_ptr, R_AARCH64_CONDBR19, label_index, 0); - tcg_out_goto_cond_noaddr(s, c); + tcg_out_reloc(s, s->code_ptr, R_AARCH64_CONDBR19, label, 0); + offset = tcg_in32(s) >> 5; } else { - tcg_out_goto_cond(s, c, l->u.value); + offset = l->u.value - (uintptr_t)s->code_ptr; + offset >>= 2; + assert(offset >= -0x40000 && offset < 0x40000); } + + tcg_out_insn(s, 3202, B_C, c, offset); } static inline void tcg_out_rev(TCGContext *s, TCGType ext, @@ -1571,8 +1566,7 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, a1 = (int32_t)a1; /* FALLTHRU */ case INDEX_op_brcond_i64: - tcg_out_cmp(s, ext, a0, a1, const_args[1]); - tcg_out_goto_label_cond(s, a2, args[3]); + tcg_out_brcond(s, ext, a2, a0, a1, const_args[1], args[3]); break; case INDEX_op_setcond_i32: |