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target/ppc: Implement xvcvbf16spn and xvcvspbf16 instructions 

Signed-off-by: Víctor Colombo <victor.colombo@eldorado.org.br>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220225210936.1749575-47-matheus.ferst@eldorado.org.br>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
Víctor Colombo 2022-03-02 06:51:38 +01:00 committed by Cédric Le Goater
parent 7b8d6e3e79
commit 3909ff1fac
4 changed files with 57 additions and 4 deletions
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18
target/ppc/fpu_helper.c
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@ -2785,6 +2785,24 @@ VSX_CVT_FP_TO_FP_HP(xscvhpdp, 1, float16, float64, VsrH(3), VsrD(0), 1)
VSX_CVT_FP_TO_FP_HP(xvcvsphp, 4, float32, float16, VsrW(i), VsrH(2 * i + 1), 0)
VSX_CVT_FP_TO_FP_HP(xvcvhpsp, 4, float16, float32, VsrH(2 * i + 1), VsrW(i), 0)
void helper_XVCVSPBF16(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb)
{
ppc_vsr_t t = { };
int i, status;
for (i = 0; i < 4; i++) {
t.VsrH(2 * i + 1) = float32_to_bfloat16(xb->VsrW(i), &env->fp_status);
}
status = get_float_exception_flags(&env->fp_status);
if (unlikely(status & float_flag_invalid_snan)) {
float_invalid_op_vxsnan(env, GETPC());
}
*xt = t;
do_float_check_status(env, GETPC());
}
void helper_XSCVQPDP(CPUPPCState *env, uint32_t ro, ppc_vsr_t *xt,
ppc_vsr_t *xb)
{

1
target/ppc/helper.h
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@ -492,6 +492,7 @@ DEF_HELPER_FLAGS_4(xvcmpnesp, TCG_CALL_NO_RWG, i32, env, vsr, vsr, vsr)
DEF_HELPER_3(xvcvspdp, void, env, vsr, vsr)
DEF_HELPER_3(xvcvsphp, void, env, vsr, vsr)
DEF_HELPER_3(xvcvhpsp, void, env, vsr, vsr)
DEF_HELPER_3(XVCVSPBF16, void, env, vsr, vsr)
DEF_HELPER_3(xvcvspsxds, void, env, vsr, vsr)
DEF_HELPER_3(xvcvspsxws, void, env, vsr, vsr)
DEF_HELPER_3(xvcvspuxds, void, env, vsr, vsr)

11
target/ppc/insn32.decode
View File

@ -152,8 +152,11 @@
%xx_xb 1:1 11:5
%xx_xa 2:1 16:5
%xx_xc 3:1 6:5
&XX2 xt xb uim:uint8_t
@XX2 ...... ..... ... uim:2 ..... ......... .. &XX2 xt=%xx_xt xb=%xx_xb
&XX2 xt xb
@XX2 ...... ..... ..... ..... ......... .. &XX2 xt=%xx_xt xb=%xx_xb
&XX2_uim2 xt xb uim:uint8_t
@XX2_uim2 ...... ..... ... uim:2 ..... ......... .. &XX2_uim2 xt=%xx_xt xb=%xx_xb
&XX2_bf_xb bf xb
@XX2_bf_xb ...... bf:3 .. ..... ..... ......... . . &XX2_bf_xb xb=%xx_xb
@ -637,7 +640,7 @@ XSNMSUBQP 111111 ..... ..... ..... 0111100100 . @X_rc
## VSX splat instruction
XXSPLTIB 111100 ..... 00 ........ 0101101000 . @X_imm8
XXSPLTW 111100 ..... ---.. ..... 010100100 . . @XX2
XXSPLTW 111100 ..... ---.. ..... 010100100 . . @XX2_uim2
## VSX Permute Instructions
@ -677,6 +680,8 @@ XSCMPGTQP 111111 ..... ..... ..... 0011100100 - @X
## VSX Binary Floating-Point Convert Instructions
XSCVQPDP 111111 ..... 10100 ..... 1101000100 . @X_tb_rc
XVCVBF16SPN 111100 ..... 10000 ..... 111011011 .. @XX2
XVCVSPBF16 111100 ..... 10001 ..... 111011011 .. @XX2
## VSX Vector Test Least-Significant Bit by Byte Instruction

31
target/ppc/translate/vsx-impl.c.inc
View File

@ -1590,7 +1590,7 @@ static bool trans_XXSEL(DisasContext *ctx, arg_XX4 *a)
return true;
}
static bool trans_XXSPLTW(DisasContext *ctx, arg_XX2 *a)
static bool trans_XXSPLTW(DisasContext *ctx, arg_XX2_uim2 *a)
{
int tofs, bofs;
@ -2648,6 +2648,35 @@ TRANS(XSCMPGTQP, do_xscmpqp, gen_helper_XSCMPGTQP)
TRANS(XSMAXCQP, do_xscmpqp, gen_helper_XSMAXCQP)
TRANS(XSMINCQP, do_xscmpqp, gen_helper_XSMINCQP)
static bool trans_XVCVSPBF16(DisasContext *ctx, arg_XX2 *a)
{
TCGv_ptr xt, xb;
REQUIRE_INSNS_FLAGS2(ctx, ISA310);
REQUIRE_VSX(ctx);
xt = gen_vsr_ptr(a->xt);
xb = gen_vsr_ptr(a->xb);
gen_helper_XVCVSPBF16(cpu_env, xt, xb);
tcg_temp_free_ptr(xt);
tcg_temp_free_ptr(xb);
return true;
}
static bool trans_XVCVBF16SPN(DisasContext *ctx, arg_XX2 *a)
{
REQUIRE_INSNS_FLAGS2(ctx, ISA310);
REQUIRE_VSX(ctx);
tcg_gen_gvec_shli(MO_32, vsr_full_offset(a->xt), vsr_full_offset(a->xb),
16, 16, 16);
return true;
}
#undef GEN_XX2FORM
#undef GEN_XX3FORM
#undef GEN_XX2IFORM