Upper 4 bits of ccond (bits 31..28 ) of DSPControl register are not used in
the MIPS32 architecture. They are used in the MIPS64 architecture. For MIPS32
these bits must be written as zero, and return zero on read.
The change fixes writes (WRDSP) and reads (RDDSP) to the register. It also fixes
the tests that use these instructions, and makes them smaller and simpler.
Signed-off-by: Petar Jovanovic <petarj@mips.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
helper_shilo has not been shifting an accumulator value correctly for negative
values in 'shift' field. Minor optimization for shift=0 case.
This change also adds tests that will trigger issue and check for regressions.
Signed-off-by: Petar Jovanovic <petarj@mips.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Eric Johnson <ericj@mips.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Content of register rs should be shifted for pos before applying a mask.
This change contains both fix for the instruction and to the existing test.
Signed-off-by: Petar Jovanovic <petarj@mips.com>
Reviewed-by: Eric Johnson <ericj@mips.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Fix build on a 32 bit host:
CC mips-softmmu/target-mips/dsp_helper.o
/src/qemu/target-mips/dsp_helper.c: In function 'helper_dextr_rs_w':
/src/qemu/target-mips/dsp_helper.c:3556: error: integer constant is too large for 'long' type
/src/qemu/target-mips/dsp_helper.c: In function 'helper_extr_s_h':
/src/qemu/target-mips/dsp_helper.c:3656: error: integer constant is too large for 'long' type
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Add internal functions using by MIPS ASE DSP instructions.
Signed-off-by: Jia Liu <proljc@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
