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target/ppc: Refactor emulation of vmrgew and vmrgow instructions 

Since I found this two instructions implemented with tcg, I refactored
them so they are consistent with other similar implementations that
I introduced in this patch.

Also, a new dual macro GEN_VXFORM_TRANS_DUAL is added. This macro is
used if one instruction is realized with direct translation, and second
one with a helper.

Signed-off-by: Stefan Brankovic <stefan.brankovic@rt-rk.com>
Message-Id: <1566898663-25858-4-git-send-email-stefan.brankovic@rt-rk.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Stefan Brankovic 2019-08-27 11:37:43 +02:00 committed by David Gibson
parent 16ce2fffa6
commit 897b639789
1 changed files with 37 additions and 29 deletions
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66
target/ppc/translate/vmx-impl.inc.c
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@ -350,6 +350,28 @@ static void glue(gen_, name0##_##name1)(DisasContext *ctx) \
} \
}
/*
* We use this macro if one instruction is realized with direct
* translation, and second one with helper.
*/
#define GEN_VXFORM_TRANS_DUAL(name0, flg0, flg2_0, name1, flg1, flg2_1)\
static void glue(gen_, name0##_##name1)(DisasContext *ctx) \
{ \
if ((Rc(ctx->opcode) == 0) && \
((ctx->insns_flags & flg0) || (ctx->insns_flags2 & flg2_0))) { \
if (unlikely(!ctx->altivec_enabled)) { \
gen_exception(ctx, POWERPC_EXCP_VPU); \
return; \
} \
trans_##name0(ctx); \
} else if ((Rc(ctx->opcode) == 1) && \
((ctx->insns_flags & flg1) || (ctx->insns_flags2 & flg2_1))) { \
gen_##name1(ctx); \
} else { \
gen_inval_exception(ctx, POWERPC_EXCP_INVAL_INVAL); \
} \
}
/* Adds support to provide invalid mask */
#define GEN_VXFORM_DUAL_EXT(name0, flg0, flg2_0, inval0, \
name1, flg1, flg2_1, inval1) \
@ -431,20 +453,13 @@ GEN_VXFORM(vmrglb, 6, 4);
GEN_VXFORM(vmrglh, 6, 5);
GEN_VXFORM(vmrglw, 6, 6);
static void gen_vmrgew(DisasContext *ctx)
static void trans_vmrgew(DisasContext *ctx)
{
TCGv_i64 tmp;
TCGv_i64 avr;
int VT, VA, VB;
if (unlikely(!ctx->altivec_enabled)) {
gen_exception(ctx, POWERPC_EXCP_VPU);
return;
}
VT = rD(ctx->opcode);
VA = rA(ctx->opcode);
VB = rB(ctx->opcode);
tmp = tcg_temp_new_i64();
avr = tcg_temp_new_i64();
int VT = rD(ctx->opcode);
int VA = rA(ctx->opcode);
int VB = rB(ctx->opcode);
TCGv_i64 tmp = tcg_temp_new_i64();
TCGv_i64 avr = tcg_temp_new_i64();
get_avr64(avr, VB, true);
tcg_gen_shri_i64(tmp, avr, 32);
@ -462,21 +477,14 @@ static void gen_vmrgew(DisasContext *ctx)
tcg_temp_free_i64(avr);
}
static void gen_vmrgow(DisasContext *ctx)
static void trans_vmrgow(DisasContext *ctx)
{
TCGv_i64 t0, t1;
TCGv_i64 avr;
int VT, VA, VB;
if (unlikely(!ctx->altivec_enabled)) {
gen_exception(ctx, POWERPC_EXCP_VPU);
return;
}
VT = rD(ctx->opcode);
VA = rA(ctx->opcode);
VB = rB(ctx->opcode);
t0 = tcg_temp_new_i64();
t1 = tcg_temp_new_i64();
avr = tcg_temp_new_i64();
int VT = rD(ctx->opcode);
int VA = rA(ctx->opcode);
int VB = rB(ctx->opcode);
TCGv_i64 t0 = tcg_temp_new_i64();
TCGv_i64 t1 = tcg_temp_new_i64();
TCGv_i64 avr = tcg_temp_new_i64();
get_avr64(t0, VB, true);
get_avr64(t1, VA, true);
@ -936,14 +944,14 @@ GEN_VXFORM_ENV(vminfp, 5, 17);
GEN_VXFORM_HETRO(vextublx, 6, 24)
GEN_VXFORM_HETRO(vextuhlx, 6, 25)
GEN_VXFORM_HETRO(vextuwlx, 6, 26)
GEN_VXFORM_DUAL(vmrgow, PPC_NONE, PPC2_ALTIVEC_207,
GEN_VXFORM_TRANS_DUAL(vmrgow, PPC_NONE, PPC2_ALTIVEC_207,
vextuwlx, PPC_NONE, PPC2_ISA300)
GEN_VXFORM_HETRO(vextubrx, 6, 28)
GEN_VXFORM_HETRO(vextuhrx, 6, 29)
GEN_VXFORM_HETRO(vextuwrx, 6, 30)
GEN_VXFORM_TRANS(lvsl, 6, 31)
GEN_VXFORM_TRANS(lvsr, 6, 32)
GEN_VXFORM_DUAL(vmrgew, PPC_NONE, PPC2_ALTIVEC_207, \
GEN_VXFORM_TRANS_DUAL(vmrgew, PPC_NONE, PPC2_ALTIVEC_207,
vextuwrx, PPC_NONE, PPC2_ISA300)
#define GEN_VXRFORM1(opname, name, str, opc2, opc3) \