diff options
| author | Petar Jovanovic <petar.jovanovic@imgtec.com> | 2013-07-01 01:54:47 +0200 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2013-07-29 00:27:36 +0200 |
| commit | d36c231f4b7386bd8230aa17d362b925aa419b2f (patch) | |
| tree | 49513570a018c658582d8fb24b88bb8487988489 /tests/tcg | |
| parent | 05b3274b6bedb68ff78b76c642e17e97f3181c2f (diff) | |
target-mips: fix mipsdsp_trunc16_sat16_round
This change corrects rounding and saturation of Q31 fractional value in
mipsdsp_trunc16_sat16_round(). Overflow detection was incorrect for the
corner case for PRECRQ_RS.PH, and this test case is also part of the change.
Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'tests/tcg')
| -rw-r--r-- | tests/tcg/mips/mips32-dsp/precrq_rs_ph_w.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/tests/tcg/mips/mips32-dsp/precrq_rs_ph_w.c b/tests/tcg/mips/mips32-dsp/precrq_rs_ph_w.c index 3535b37a58..da6845bf24 100644 --- a/tests/tcg/mips/mips32-dsp/precrq_rs_ph_w.c +++ b/tests/tcg/mips/mips32-dsp/precrq_rs_ph_w.c @@ -12,18 +12,34 @@ int main() result = 0x12348765; __asm - ("precrq_rs.ph.w %0, %1, %2\n\t" + ("wrdsp $0\n\t" + "precrq_rs.ph.w %0, %1, %2\n\t" : "=r"(rd) : "r"(rs), "r"(rt) ); assert(result == rd); - rs = 0x7fffC678; + rs = 0x7FFFC678; rt = 0x865432A0; - result = 0x7fff8654; + result = 0x7FFF8654; __asm - ("precrq_rs.ph.w %0, %2, %3\n\t" + ("wrdsp $0\n\t" + "precrq_rs.ph.w %0, %2, %3\n\t" + "rddsp %1\n\t" + : "=r"(rd), "=r"(dsp) + : "r"(rs), "r"(rt) + ); + assert(((dsp >> 22) & 0x01) == 1); + assert(result == rd); + + rs = 0xBEEFFEED; + rt = 0x7FFF8000; + result = 0xBEF07FFF; + + __asm + ("wrdsp $0\n\t" + "precrq_rs.ph.w %0, %2, %3\n\t" "rddsp %1\n\t" : "=r"(rd), "=r"(dsp) : "r"(rs), "r"(rt) |