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tcg/README: document tcg_gen_goto_tb restrictions

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See
http://lists.nongnu.org/archive/html/qemu-devel/2012-09/msg03196.html
for the whole story.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Max Filippov 2012-09-21 04:18:07 +04:00 committed by Aurelien Jarno
parent f0da375754
commit 9bacf41431
1 changed files with 2 additions and 1 deletions
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tcg/README
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@ -392,7 +392,8 @@ Exit the current TB and return the value t0 (word type).
Exit the current TB and jump to the TB index 'index' (constant) if the
current TB was linked to this TB. Otherwise execute the next
instructions.
instructions. Only indices 0 and 1 are valid and tcg_gen_goto_tb may be issued
at most once with each slot index per TB.
* qemu_ld8u t0, t1, flags
qemu_ld8s t0, t1, flags