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target-ppc: Add xsmulqp instruction

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xsmulqp: VSX Scalar Multiply Quad-Precision

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Bharata B Rao 2017-01-12 21:54:08 +05:30 committed by David Gibson
parent 314c116347
commit a811ec0491
4 changed files with 38 additions and 0 deletions
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35
target/ppc/fpu_helper.c
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@ -1927,6 +1927,41 @@ VSX_MUL(xsmulsp, 1, float64, VsrD(0), 1, 1)
VSX_MUL(xvmuldp, 2, float64, VsrD(i), 0, 0)
VSX_MUL(xvmulsp, 4, float32, VsrW(i), 0, 0)
void helper_xsmulqp(CPUPPCState *env, uint32_t opcode)
{
ppc_vsr_t xt, xa, xb;
getVSR(rA(opcode) + 32, &xa, env);
getVSR(rB(opcode) + 32, &xb, env);
getVSR(rD(opcode) + 32, &xt, env);
if (unlikely(Rc(opcode) != 0)) {
/* TODO: Support xsmulpo after round-to-odd is implemented */
abort();
}
helper_reset_fpstatus(env);
float_status tstat = env->fp_status;
set_float_exception_flags(0, &tstat);
xt.f128 = float128_mul(xa.f128, xb.f128, &tstat);
env->fp_status.float_exception_flags |= tstat.float_exception_flags;
if (unlikely(tstat.float_exception_flags & float_flag_invalid)) {
if ((float128_is_infinity(xa.f128) && float128_is_zero(xb.f128)) ||
(float128_is_infinity(xb.f128) && float128_is_zero(xa.f128))) {
float_invalid_op_excp(env, POWERPC_EXCP_FP_VXIMZ, 1);
} else if (float128_is_signaling_nan(xa.f128, &tstat) ||
float128_is_signaling_nan(xb.f128, &tstat)) {
float_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 1);
}
}
helper_compute_fprf_float128(env, xt.f128);
putVSR(rD(opcode) + 32, &xt, env);
float_check_status(env);
}
/* VSX_DIV - VSX floating point divide
* op - instruction mnemonic
* nels - number of elements (1, 2 or 4)

1
target/ppc/helper.h
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@ -403,6 +403,7 @@ DEF_HELPER_2(xsadddp, void, env, i32)
DEF_HELPER_2(xsaddqp, void, env, i32)
DEF_HELPER_2(xssubdp, void, env, i32)
DEF_HELPER_2(xsmuldp, void, env, i32)
DEF_HELPER_2(xsmulqp, void, env, i32)
DEF_HELPER_2(xsdivdp, void, env, i32)
DEF_HELPER_2(xsdivqp, void, env, i32)
DEF_HELPER_2(xsredp, void, env, i32)

1
target/ppc/translate/vsx-impl.inc.c
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@ -780,6 +780,7 @@ GEN_VSX_HELPER_2(xsadddp, 0x00, 0x04, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsaddqp, 0x04, 0x00, 0, PPC2_ISA300)
GEN_VSX_HELPER_2(xssubdp, 0x00, 0x05, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsmuldp, 0x00, 0x06, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsmulqp, 0x04, 0x01, 0, PPC2_ISA300)
GEN_VSX_HELPER_2(xsdivdp, 0x00, 0x07, 0, PPC2_VSX)
GEN_VSX_HELPER_2(xsdivqp, 0x04, 0x11, 0, PPC2_ISA300)
GEN_VSX_HELPER_2(xsredp, 0x14, 0x05, 0, PPC2_VSX)

1
target/ppc/translate/vsx-ops.inc.c
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@ -146,6 +146,7 @@ GEN_XX3FORM(xsadddp, 0x00, 0x04, PPC2_VSX),
GEN_VSX_XFORM_300(xsaddqp, 0x04, 0x00, 0x0),
GEN_XX3FORM(xssubdp, 0x00, 0x05, PPC2_VSX),
GEN_XX3FORM(xsmuldp, 0x00, 0x06, PPC2_VSX),
GEN_VSX_XFORM_300(xsmulqp, 0x04, 0x01, 0x0),
GEN_XX3FORM(xsdivdp, 0x00, 0x07, PPC2_VSX),
GEN_XX2FORM(xsredp, 0x14, 0x05, PPC2_VSX),
GEN_XX2FORM(xssqrtdp, 0x16, 0x04, PPC2_VSX),