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| author | Tom Musta <tommusta@gmail.com> | 2014-01-15 08:10:37 -0600 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-03-05 03:06:35 +0100 |
| commit | cea4e57473efc2fad1d241e87984eba4e5d9690c (patch) | |
| tree | 4c71a18b09ed18cfc57d7104e3158f893bac24a8 /target-ppc/fpu_helper.c | |
| parent | 2c0c52ae620cf121a8b9084c7c1168d867564ee8 (diff) | |
| download | qemu-cea4e57473efc2fad1d241e87984eba4e5d9690c.tar.gz qemu-cea4e57473efc2fad1d241e87984eba4e5d9690c.tar.bz2 qemu-cea4e57473efc2fad1d241e87984eba4e5d9690c.zip | |
target-ppc: VSX Stage 4: Add xssqrtsp
This patch adds the VSX Scalar Square Root Single Precision (xssqrtsp)
instruction.
The existing VSX_SQRT() macro is modified to support rounding of the
intermediate double-precision result to single-precision.
Signed-off-by: Tom Musta <tommusta@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc/fpu_helper.c')
| -rw-r--r-- | target-ppc/fpu_helper.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/target-ppc/fpu_helper.c b/target-ppc/fpu_helper.c index ac52c23ee3..fec9d1b15f 100644 --- a/target-ppc/fpu_helper.c +++ b/target-ppc/fpu_helper.c @@ -1969,7 +1969,7 @@ VSX_RE(xvresp, 4, float32, f32, 0, 0) * fld - vsr_t field (f32 or f64) * sfprf - set FPRF */ -#define VSX_SQRT(op, nels, tp, fld, sfprf) \ +#define VSX_SQRT(op, nels, tp, fld, sfprf, r2sp) \ void helper_##op(CPUPPCState *env, uint32_t opcode) \ { \ ppc_vsr_t xt, xb; \ @@ -1993,6 +1993,10 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \ } \ } \ \ + if (r2sp) { \ + xt.fld[i] = helper_frsp(env, xt.fld[i]); \ + } \ + \ if (sfprf) { \ helper_compute_fprf(env, xt.fld[i], sfprf); \ } \ @@ -2002,9 +2006,10 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \ helper_float_check_status(env); \ } -VSX_SQRT(xssqrtdp, 1, float64, f64, 1) -VSX_SQRT(xvsqrtdp, 2, float64, f64, 0) -VSX_SQRT(xvsqrtsp, 4, float32, f32, 0) +VSX_SQRT(xssqrtdp, 1, float64, f64, 1, 0) +VSX_SQRT(xssqrtsp, 1, float64, f64, 1, 1) +VSX_SQRT(xvsqrtdp, 2, float64, f64, 0, 0) +VSX_SQRT(xvsqrtsp, 4, float32, f32, 0, 0) /* VSX_RSQRTE - VSX floating point reciprocal square root estimate * op - instruction mnemonic |