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target-ppc: Add ISA 2.06 ftdiv Instruction

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This patch adds the Floating Point Test for Divide instruction which
was introduced in Power ISA 2.06B.

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 2014-01-07 10:06:07 -06:00 • committed by Alexander Graf
parent 29a0e4e9a1
commit da29cb7bc7
3 changed files with 61 additions and 10 deletions
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13
target-ppc/translate.c
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@ -2238,6 +2238,18 @@ GEN_FLOAT_B(rip, 0x08, 0x0E, 1, PPC_FLOAT_EXT);
/* frim */
GEN_FLOAT_B(rim, 0x08, 0x0F, 1, PPC_FLOAT_EXT);
static void gen_ftdiv(DisasContext *ctx)
{
if (unlikely(!ctx->fpu_enabled)) {
gen_exception(ctx, POWERPC_EXCP_FPU);
return;
}
gen_helper_ftdiv(cpu_crf[crfD(ctx->opcode)], cpu_fpr[rA(ctx->opcode)],
cpu_fpr[rB(ctx->opcode)]);
}
/*** Floating-Point compare ***/
/* fcmpo */
@ -9856,6 +9868,7 @@ GEN_FLOAT_ACB(madd, 0x1D, 1, PPC_FLOAT),
GEN_FLOAT_ACB(msub, 0x1C, 1, PPC_FLOAT),
GEN_FLOAT_ACB(nmadd, 0x1F, 1, PPC_FLOAT),
GEN_FLOAT_ACB(nmsub, 0x1E, 1, PPC_FLOAT),
GEN_HANDLER_E(ftdiv, 0x3F, 0x00, 0x04, 1, PPC_NONE, PPC2_FP_TST_ISA206),
GEN_FLOAT_B(ctiw, 0x0E, 0x00, 0, PPC_FLOAT),
GEN_HANDLER_E(fctiwu, 0x3F, 0x0E, 0x04, 0, PPC_NONE, PPC2_FP_CVT_ISA206),
GEN_FLOAT_B(ctiwz, 0x0F, 0x00, 0, PPC_FLOAT),