Git Repo - qemu.git/commit - tests/tcg/mips/mips32-dsp/shll

]> Git Repo - qemu.git/commit - tests/tcg/mips/mips32-dsp/shll_ph.c

author	Petar Jovanovic <[email protected]>
	Sun, 28 Apr 2013 01:18:36 +0000 (03:18 +0200)
committer	Aurelien Jarno <[email protected]>
	Fri, 3 May 2013 09:50:49 +0000 (11:50 +0200)
commit	29851ee7c8bd3fb8542e21cd0270c73132590350
tree	e046e54284c3d18bce7f363c670cecb0f01a72a6	tree \| snapshot
parent	8ca27ce2e1150486ea2db4116a03706b28294f16	commit \| diff

target-mips: fix calculation of overflow for SHLL.PH and SHLL.QB

This change corrects and simplifies how discard is calculated for shift
left logical vector instructions. It is used to detect overflow and set bit
22 in the DSPControl register.

The existing tests (shll_ph.c, shll_qb.c) are extended with the corner cases
that expose incorrectness in the previous implementation.

Signed-off-by: Petar Jovanovic <[email protected]>
Signed-off-by: Aurelien Jarno <[email protected]>

target-mips/dsp_helper.c		diff \| blob \| blame \| history
tests/tcg/mips/mips32-dsp/shll_ph.c		diff \| blob \| blame \| history
tests/tcg/mips/mips32-dsp/shll_qb.c		diff \| blob \| blame \| history

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