diff options
| author | Tom Musta <tommusta@gmail.com> | 2014-01-02 16:21:24 -0600 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-03-05 03:06:29 +0100 |
| commit | 2009227fbe868979d6a0518ef34972462f140404 (patch) | |
| tree | 3162cc0ebd9520a0e9e16be0f3bcdbc0a6a0891c /target-ppc/fpu_helper.c | |
| parent | 4b98eeef50c1bb619dc32bddc9d54ed03c365c5f (diff) | |
target-ppc: Add VSX ISA2.06 xre Instructions
This patch adds the VSX floating point reciprocal estimate instructions
defined by V2.06 of the PowerPC ISA: xsredp, xvredp, xvresp.
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 | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/target-ppc/fpu_helper.c b/target-ppc/fpu_helper.c index c84f4329e8..5908e4135e 100644 --- a/target-ppc/fpu_helper.c +++ b/target-ppc/fpu_helper.c @@ -1904,3 +1904,38 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \ VSX_DIV(xsdivdp, 1, float64, f64, 1) VSX_DIV(xvdivdp, 2, float64, f64, 0) VSX_DIV(xvdivsp, 4, float32, f32, 0) + +/* VSX_RE - VSX floating point reciprocal estimate + * op - instruction mnemonic + * nels - number of elements (1, 2 or 4) + * tp - type (float32 or float64) + * fld - vsr_t field (f32 or f64) + * sfprf - set FPRF + */ +#define VSX_RE(op, nels, tp, fld, sfprf) \ +void helper_##op(CPUPPCState *env, uint32_t opcode) \ +{ \ + ppc_vsr_t xt, xb; \ + int i; \ + \ + getVSR(xB(opcode), &xb, env); \ + getVSR(xT(opcode), &xt, env); \ + helper_reset_fpstatus(env); \ + \ + for (i = 0; i < nels; i++) { \ + if (unlikely(tp##_is_signaling_nan(xb.fld[i]))) { \ + fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \ + } \ + xt.fld[i] = tp##_div(tp##_one, xb.fld[i], &env->fp_status); \ + if (sfprf) { \ + helper_compute_fprf(env, xt.fld[0], sfprf); \ + } \ + } \ + \ + putVSR(xT(opcode), &xt, env); \ + helper_float_check_status(env); \ +} + +VSX_RE(xsredp, 1, float64, f64, 1) +VSX_RE(xvredp, 2, float64, f64, 0) +VSX_RE(xvresp, 4, float32, f32, 0) |