aboutsummaryrefslogtreecommitdiff
path: root/qmp.c
diff options
context:
space:
mode:
authorLaurent Vivier <laurent@vivier.eu>2018-03-19 12:35:44 +0100
committerLaurent Vivier <laurent@vivier.eu>2018-03-20 09:38:58 +0100
commitecc207d2fc1d45fabb16c38742a6675a7ba56cbc (patch)
tree5646ad7b5c0cc5425f1d0cbcbb11ea71ce5dded0 /qmp.c
parent3f215a147b352c45a1470d2646be07805a7af4c9 (diff)
target/m68k: add a mechanism to automatically free TCGv
SRC_EA() and gen_extend() can return either a temporary TCGv or a memory allocated one. Mark them when they are allocated, and free them automatically at end of the instruction translation. We want to free locally allocated TCGv to avoid overflow in sequence like: 0xc00ae406: movel %fp@(-132),%fp@(-268) 0xc00ae40c: movel %fp@(-128),%fp@(-264) 0xc00ae412: movel %fp@(-20),%fp@(-212) 0xc00ae418: movel %fp@(-16),%fp@(-208) 0xc00ae41e: movel %fp@(-60),%fp@(-220) 0xc00ae424: movel %fp@(-56),%fp@(-216) 0xc00ae42a: movel %fp@(-124),%fp@(-252) 0xc00ae430: movel %fp@(-120),%fp@(-248) 0xc00ae436: movel %fp@(-12),%fp@(-260) 0xc00ae43c: movel %fp@(-8),%fp@(-256) 0xc00ae442: movel %fp@(-52),%fp@(-276) 0xc00ae448: movel %fp@(-48),%fp@(-272) ... That can fill a lot of TCGv entries in a sequence, especially since 15fa08f845 ("tcg: Dynamically allocate TCGOps") we have no limit to fill the TCGOps cache and we can fill the entire TCG variables array and overflow it. Suggested-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180319113544.704-3-laurent@vivier.eu>
Diffstat (limited to 'qmp.c')
0 files changed, 0 insertions, 0 deletions