diff options
| author | Tom Musta <tommusta@gmail.com> | 2014-01-02 16:21:26 -0600 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-03-05 03:06:29 +0100 |
| commit | d3f9df8fb83f72947a44bc773bec92105db731ff (patch) | |
| tree | 9d5fe2bd4256185f40901f722f129e41e60a5dee | |
| parent | d32404fe42ec67beee7d26aef8571e5e9c1e39b3 (diff) | |
target-ppc: Add VSX ISA2.06 xrsqrte Instructions
This patch adds the VSX floating point reciprocal square root
estimate instructions defined by V2.06 of the PowerPC ISA: xsrsqrtedp,
xvrsqrtedp, xvrsqrtesp.
Signed-off-by: Tom Musta <tommusta@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
| -rw-r--r-- | target-ppc/fpu_helper.c | 45 | ||||
| -rw-r--r-- | target-ppc/helper.h | 3 | ||||
| -rw-r--r-- | target-ppc/translate.c | 6 |
3 files changed, 54 insertions, 0 deletions
diff --git a/target-ppc/fpu_helper.c b/target-ppc/fpu_helper.c index 060e6a0233..31669f117a 100644 --- a/target-ppc/fpu_helper.c +++ b/target-ppc/fpu_helper.c @@ -1983,3 +1983,48 @@ void helper_##op(CPUPPCState *env, uint32_t opcode) \ VSX_SQRT(xssqrtdp, 1, float64, f64, 1) VSX_SQRT(xvsqrtdp, 2, float64, f64, 0) VSX_SQRT(xvsqrtsp, 4, float32, f32, 0) + +/* VSX_RSQRTE - VSX floating point reciprocal square root 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_RSQRTE(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++) { \ + float_status tstat = env->fp_status; \ + set_float_exception_flags(0, &tstat); \ + xt.fld[i] = tp##_sqrt(xb.fld[i], &tstat); \ + xt.fld[i] = tp##_div(tp##_one, xt.fld[i], &tstat); \ + env->fp_status.float_exception_flags |= tstat.float_exception_flags; \ + \ + if (unlikely(tstat.float_exception_flags & float_flag_invalid)) { \ + if (tp##_is_neg(xb.fld[i]) && !tp##_is_zero(xb.fld[i])) { \ + fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSQRT, sfprf); \ + } else if (tp##_is_signaling_nan(xb.fld[i])) { \ + fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, sfprf); \ + } \ + } \ + \ + if (sfprf) { \ + helper_compute_fprf(env, xt.fld[i], sfprf); \ + } \ + } \ + \ + putVSR(xT(opcode), &xt, env); \ + helper_float_check_status(env); \ +} + +VSX_RSQRTE(xsrsqrtedp, 1, float64, f64, 1) +VSX_RSQRTE(xvrsqrtedp, 2, float64, f64, 0) +VSX_RSQRTE(xvrsqrtesp, 4, float32, f32, 0) diff --git a/target-ppc/helper.h b/target-ppc/helper.h index a6e7e625ba..4d5e31b962 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -257,6 +257,7 @@ DEF_HELPER_2(xsmuldp, void, env, i32) DEF_HELPER_2(xsdivdp, void, env, i32) DEF_HELPER_2(xsredp, void, env, i32) DEF_HELPER_2(xssqrtdp, void, env, i32) +DEF_HELPER_2(xsrsqrtedp, void, env, i32) DEF_HELPER_2(xvadddp, void, env, i32) DEF_HELPER_2(xvsubdp, void, env, i32) @@ -264,6 +265,7 @@ DEF_HELPER_2(xvmuldp, void, env, i32) DEF_HELPER_2(xvdivdp, void, env, i32) DEF_HELPER_2(xvredp, void, env, i32) DEF_HELPER_2(xvsqrtdp, void, env, i32) +DEF_HELPER_2(xvrsqrtedp, void, env, i32) DEF_HELPER_2(xvaddsp, void, env, i32) DEF_HELPER_2(xvsubsp, void, env, i32) @@ -271,6 +273,7 @@ DEF_HELPER_2(xvmulsp, void, env, i32) DEF_HELPER_2(xvdivsp, void, env, i32) DEF_HELPER_2(xvresp, void, env, i32) DEF_HELPER_2(xvsqrtsp, void, env, i32) +DEF_HELPER_2(xvrsqrtesp, void, env, i32) DEF_HELPER_2(efscfsi, i32, env, i32) DEF_HELPER_2(efscfui, i32, env, i32) diff --git a/target-ppc/translate.c b/target-ppc/translate.c index 0e4b49fe09..bd6c9a0161 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -7310,6 +7310,7 @@ GEN_VSX_HELPER_2(xsmuldp, 0x00, 0x06, 0, PPC2_VSX) GEN_VSX_HELPER_2(xsdivdp, 0x00, 0x07, 0, PPC2_VSX) GEN_VSX_HELPER_2(xsredp, 0x14, 0x05, 0, PPC2_VSX) GEN_VSX_HELPER_2(xssqrtdp, 0x16, 0x04, 0, PPC2_VSX) +GEN_VSX_HELPER_2(xsrsqrtedp, 0x14, 0x04, 0, PPC2_VSX) GEN_VSX_HELPER_2(xvadddp, 0x00, 0x0C, 0, PPC2_VSX) GEN_VSX_HELPER_2(xvsubdp, 0x00, 0x0D, 0, PPC2_VSX) @@ -7317,6 +7318,7 @@ GEN_VSX_HELPER_2(xvmuldp, 0x00, 0x0E, 0, PPC2_VSX) GEN_VSX_HELPER_2(xvdivdp, 0x00, 0x0F, 0, PPC2_VSX) GEN_VSX_HELPER_2(xvredp, 0x14, 0x0D, 0, PPC2_VSX) GEN_VSX_HELPER_2(xvsqrtdp, 0x16, 0x0C, 0, PPC2_VSX) +GEN_VSX_HELPER_2(xvrsqrtedp, 0x14, 0x0C, 0, PPC2_VSX) GEN_VSX_HELPER_2(xvaddsp, 0x00, 0x08, 0, PPC2_VSX) GEN_VSX_HELPER_2(xvsubsp, 0x00, 0x09, 0, PPC2_VSX) @@ -7324,6 +7326,7 @@ GEN_VSX_HELPER_2(xvmulsp, 0x00, 0x0A, 0, PPC2_VSX) GEN_VSX_HELPER_2(xvdivsp, 0x00, 0x0B, 0, PPC2_VSX) GEN_VSX_HELPER_2(xvresp, 0x14, 0x09, 0, PPC2_VSX) GEN_VSX_HELPER_2(xvsqrtsp, 0x16, 0x08, 0, PPC2_VSX) +GEN_VSX_HELPER_2(xvrsqrtesp, 0x14, 0x08, 0, PPC2_VSX) #define VSX_LOGICAL(name, tcg_op) \ static void glue(gen_, name)(DisasContext * ctx) \ @@ -10012,6 +10015,7 @@ GEN_XX3FORM(xsmuldp, 0x00, 0x06, PPC2_VSX), GEN_XX3FORM(xsdivdp, 0x00, 0x07, PPC2_VSX), GEN_XX2FORM(xsredp, 0x14, 0x05, PPC2_VSX), GEN_XX2FORM(xssqrtdp, 0x16, 0x04, PPC2_VSX), +GEN_XX2FORM(xsrsqrtedp, 0x14, 0x04, PPC2_VSX), GEN_XX3FORM(xvadddp, 0x00, 0x0C, PPC2_VSX), GEN_XX3FORM(xvsubdp, 0x00, 0x0D, PPC2_VSX), @@ -10019,6 +10023,7 @@ GEN_XX3FORM(xvmuldp, 0x00, 0x0E, PPC2_VSX), GEN_XX3FORM(xvdivdp, 0x00, 0x0F, PPC2_VSX), GEN_XX2FORM(xvredp, 0x14, 0x0D, PPC2_VSX), GEN_XX2FORM(xvsqrtdp, 0x16, 0x0C, PPC2_VSX), +GEN_XX2FORM(xvrsqrtedp, 0x14, 0x0C, PPC2_VSX), GEN_XX3FORM(xvaddsp, 0x00, 0x08, PPC2_VSX), GEN_XX3FORM(xvsubsp, 0x00, 0x09, PPC2_VSX), @@ -10026,6 +10031,7 @@ GEN_XX3FORM(xvmulsp, 0x00, 0x0A, PPC2_VSX), GEN_XX3FORM(xvdivsp, 0x00, 0x0B, PPC2_VSX), GEN_XX2FORM(xvresp, 0x14, 0x09, PPC2_VSX), GEN_XX2FORM(xvsqrtsp, 0x16, 0x08, PPC2_VSX), +GEN_XX2FORM(xvrsqrtesp, 0x14, 0x08, PPC2_VSX), #undef VSX_LOGICAL #define VSX_LOGICAL(name, opc2, opc3, fl2) \ |