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target-ppc: Add VSX xscmp*dp Instructions

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This patch adds the VSX scalar floating point compare ordered
and unordered instructions.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Tom Musta 2014-01-02 16:21:30 -06:00 • committed by Alexander Graf
parent 595c6eefb7
commit 4f17e9c738
3 changed files with 45 additions and 0 deletions
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39
target-ppc/fpu_helper.c
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@ -2249,3 +2249,42 @@ VSX_MADD(xvnmaddasp, 4, float32, f32, NMADD_FLGS, 1, 0)
VSX_MADD(xvnmaddmsp, 4, float32, f32, NMADD_FLGS, 0, 0)
VSX_MADD(xvnmsubasp, 4, float32, f32, NMSUB_FLGS, 1, 0)
VSX_MADD(xvnmsubmsp, 4, float32, f32, NMSUB_FLGS, 0, 0)
#define VSX_SCALAR_CMP(op, ordered) \
void helper_##op(CPUPPCState *env, uint32_t opcode) \
{ \
ppc_vsr_t xa, xb; \
uint32_t cc = 0; \
\
getVSR(xA(opcode), &xa, env); \
getVSR(xB(opcode), &xb, env); \
\
if (unlikely(float64_is_any_nan(xa.f64[0]) || \
float64_is_any_nan(xb.f64[0]))) { \
if (float64_is_signaling_nan(xa.f64[0]) || \
float64_is_signaling_nan(xb.f64[0])) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXSNAN, 0); \
} \
if (ordered) { \
fload_invalid_op_excp(env, POWERPC_EXCP_FP_VXVC, 0); \
} \
cc = 1; \
} else { \
if (float64_lt(xa.f64[0], xb.f64[0], &env->fp_status)) { \
cc = 8; \
} else if (!float64_le(xa.f64[0], xb.f64[0], &env->fp_status)) { \
cc = 4; \
} else { \
cc = 2; \
} \
} \
\
env->fpscr &= ~(0x0F << FPSCR_FPRF); \
env->fpscr |= cc << FPSCR_FPRF; \
env->crf[BF(opcode)] = cc; \
\
helper_float_check_status(env); \
}
VSX_SCALAR_CMP(xscmpodp, 1)
VSX_SCALAR_CMP(xscmpudp, 0)