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| author | Richard Henderson <richard.henderson@linaro.org> | 2019-02-07 13:26:40 +0000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2019-02-11 08:52:44 -0800 |
| commit | bef16ab4e641636b4e85c3d863b4257ce0be4e6f (patch) | |
| tree | ff857b9e8eda32e70d336d6b855befd609685714 /tcg/tcg-op.h | |
| parent | a044e3de2917d54b95f1211f4d14ec30cac9a59f (diff) | |
| download | qemu-bef16ab4e641636b4e85c3d863b4257ce0be4e6f.zip qemu-bef16ab4e641636b4e85c3d863b4257ce0be4e6f.tar.gz qemu-bef16ab4e641636b4e85c3d863b4257ce0be4e6f.tar.bz2 | |
tcg: Diagnose referenced labels that have not been emitted
Currently, a jump to a label that is not defined anywhere will
be emitted not be relocated. This results in a jump to a random
jump target. With tcg debugging, print a diagnostic to the -d op
file and abort.
This could help debug or detect errors like
c2d9644e6d ("target/arm: Fix crash on conditional instruction in an IT block")
Reported-by: Roman Kapl <code@rkapl.cz>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg/tcg-op.h')
| -rw-r--r-- | tcg/tcg-op.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h index 2d98868..d3e51b1 100644 --- a/tcg/tcg-op.h +++ b/tcg/tcg-op.h @@ -255,6 +255,7 @@ static inline void tcg_gen_op6ii_i64(TCGOpcode opc, TCGv_i64 a1, TCGv_i64 a2, static inline void gen_set_label(TCGLabel *l) { + l->present = 1; tcg_gen_op1(INDEX_op_set_label, label_arg(l)); } |