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target/ppc: moved XXSPLTIB to using decodetree 

Changed the function that handles XXSPLTIB emulation to using
decodetree, but still use the same logic as before

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Bruno Larsen (billionai) <bruno.larsen@eldorado.org.br>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20211104123719.323713-20-matheus.ferst@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Bruno Larsen (billionai) 2021-11-04 09:37:13 -03:00 committed by David Gibson
parent 30dfca8d8f
commit 6166fced10
3 changed files with 11 additions and 15 deletions
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5
target/ppc/insn32.decode
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@ -96,6 +96,10 @@
&X_bfl bf l:bool ra rb
@X_bfl ...... bf:3 - l:1 ra:5 rb:5 ..........- &X_bfl
%x_xt 0:1 21:5
&X_imm8 xt imm:uint8_t
@X_imm8 ...... ..... .. imm:8 .......... . &X_imm8 xt=%x_xt
&X_tb_sp_rc rt rb sp rc:bool
@X_tb_sp_rc ...... rt:5 sp:2 ... rb:5 .......... rc:1 &X_tb_sp_rc
@ -414,4 +418,5 @@ STXVPX 011111 ..... ..... ..... 0111001101 - @X_TSXP
## VSX splat instruction
XXSPLTIB 111100 ..... 00 ........ 0101101000 . @X_imm8
XXSPLTW 111100 ..... ---.. ..... 010100100 . . @XX2

20
target/ppc/translate/vsx-impl.c.inc
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@ -1455,23 +1455,15 @@ static bool trans_XXSPLTW(DisasContext *ctx, arg_XX2 *a)
#define pattern(x) (((x) & 0xff) * (~(uint64_t)0 / 0xff))
static void gen_xxspltib(DisasContext *ctx)
static bool trans_XXSPLTIB(DisasContext *ctx, arg_X_imm8 *a)
{
uint8_t uim8 = IMM8(ctx->opcode);
int rt = xT(ctx->opcode);
if (rt < 32) {
if (unlikely(!ctx->vsx_enabled)) {
gen_exception(ctx, POWERPC_EXCP_VSXU);
return;
}
if (a->xt < 32) {
REQUIRE_VSX(ctx);
} else {
if (unlikely(!ctx->altivec_enabled)) {
gen_exception(ctx, POWERPC_EXCP_VPU);
return;
}
REQUIRE_VECTOR(ctx);
}
tcg_gen_gvec_dup_imm(MO_8, vsr_full_offset(rt), 16, 16, uim8);
tcg_gen_gvec_dup_imm(MO_8, vsr_full_offset(a->xt), 16, 16, a->imm);
return true;
}
static void gen_xxsldwi(DisasContext *ctx)

1
target/ppc/translate/vsx-ops.c.inc
View File

@ -348,7 +348,6 @@ GEN_XX3FORM(xxmrghw, 0x08, 0x02, PPC2_VSX),
GEN_XX3FORM(xxmrglw, 0x08, 0x06, PPC2_VSX),
GEN_XX3FORM(xxperm, 0x08, 0x03, PPC2_ISA300),
GEN_XX3FORM(xxpermr, 0x08, 0x07, PPC2_ISA300),
GEN_XX1FORM(xxspltib, 0x08, 0x0B, PPC2_ISA300),
GEN_XX3FORM_DM(xxsldwi, 0x08, 0x00),
GEN_XX2FORM_EXT(xxextractuw, 0x0A, 0x0A, PPC2_ISA300),
GEN_XX2FORM_EXT(xxinsertw, 0x0A, 0x0B, PPC2_ISA300),