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| author | Richard Henderson <rth@twiddle.net> | 2012-09-21 17:18:16 -0700 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2012-09-26 00:31:17 +0200 |
| commit | 0a209d4bb119b92eb14b9afab55cef5bc0555554 (patch) | |
| tree | cd74b583c63ddce227116639dc1176de2d69e358 /tcg/tcg-op.h | |
| parent | 717e70368bdc339d241f84aba00ed72d051e0236 (diff) | |
| download | qemu-0a209d4bb119b92eb14b9afab55cef5bc0555554.tar.gz qemu-0a209d4bb119b92eb14b9afab55cef5bc0555554.tar.bz2 qemu-0a209d4bb119b92eb14b9afab55cef5bc0555554.zip | |
tcg: Sanity check goto_tb input
Checking that we don't try for idx != [01] is trivial. Checking
that we don't issue more than one of any index requires a tad
more data and some ifdefs protecting that new variable.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'tcg/tcg-op.h')
| -rw-r--r-- | tcg/tcg-op.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h index ecb1ac3e2e..9bfed48830 100644 --- a/tcg/tcg-op.h +++ b/tcg/tcg-op.h @@ -2275,8 +2275,15 @@ static inline void tcg_gen_exit_tb(tcg_target_long val) tcg_gen_op1i(INDEX_op_exit_tb, val); } -static inline void tcg_gen_goto_tb(int idx) -{ +static inline void tcg_gen_goto_tb(unsigned idx) +{ + /* We only support two chained exits. */ + tcg_debug_assert(idx <= 1); +#ifdef CONFIG_DEBUG_TCG + /* Verify that we havn't seen this numbered exit before. */ + tcg_debug_assert((tcg_ctx.goto_tb_issue_mask & (1 << idx)) == 0); + tcg_ctx.goto_tb_issue_mask |= 1 << idx; +#endif tcg_gen_op1i(INDEX_op_goto_tb, idx); } |