Commit ab045436 authored by Rajalakshmi Srinivasaraghavan's avatar Rajalakshmi Srinivasaraghavan Committed by David Gibson
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target-ppc: add vector permute right indexed instruction 



Add vpermr instruction from ISA 3.0.

Signed-off-by: default avatarRajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
Signed-off-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
parent 01fe9a47

target-ppc/helper.h

+1 −0
Original line number Diff line number Diff line
@@ -270,6 +270,7 @@ DEF_HELPER_5(vmsumubm, void, env, avr, avr, avr, avr) 
DEF_HELPER_5(vmsummbm, void, env, avr, avr, avr, avr)

DEF_HELPER_5(vsel, void, env, avr, avr, avr, avr)

DEF_HELPER_5(vperm, void, env, avr, avr, avr, avr)

DEF_HELPER_5(vpermr, void, env, avr, avr, avr, avr)

DEF_HELPER_4(vpkshss, void, env, avr, avr, avr)

DEF_HELPER_4(vpkshus, void, env, avr, avr, avr)

DEF_HELPER_4(vpkswss, void, env, avr, avr, avr)

target-ppc/int_helper.c

+23 −0
Original line number Diff line number Diff line
@@ -1126,6 +1126,29 @@ void helper_vperm(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, 
    *r = result;

}



void helper_vpermr(CPUPPCState *env, ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b,

                  ppc_avr_t *c)

{

    ppc_avr_t result;

    int i;



    VECTOR_FOR_INORDER_I(i, u8) {

        int s = c->u8[i] & 0x1f;

#if defined(HOST_WORDS_BIGENDIAN)

        int index = 15 - (s & 0xf);

#else

        int index = s & 0xf;

#endif



        if (s & 0x10) {

            result.u8[i] = a->u8[index];

        } else {

            result.u8[i] = b->u8[index];

        }

    }

    *r = result;

}



#if defined(HOST_WORDS_BIGENDIAN)

#define VBPERMQ_INDEX(avr, i) ((avr)->u8[(i)])

#define VBPERMD_INDEX(i) (i)

target-ppc/translate/vmx-impl.inc.c

+18 −0
Original line number Diff line number Diff line
@@ -766,6 +766,24 @@ static void gen_vmladduhm(DisasContext *ctx) 
    tcg_temp_free_ptr(rd);

}



static void gen_vpermr(DisasContext *ctx)

{

    TCGv_ptr ra, rb, rc, rd;

    if (unlikely(!ctx->altivec_enabled)) {

        gen_exception(ctx, POWERPC_EXCP_VPU);

        return;

    }

    ra = gen_avr_ptr(rA(ctx->opcode));

    rb = gen_avr_ptr(rB(ctx->opcode));

    rc = gen_avr_ptr(rC(ctx->opcode));

    rd = gen_avr_ptr(rD(ctx->opcode));

    gen_helper_vpermr(cpu_env, rd, ra, rb, rc);

    tcg_temp_free_ptr(ra);

    tcg_temp_free_ptr(rb);

    tcg_temp_free_ptr(rc);

    tcg_temp_free_ptr(rd);

}



GEN_VAFORM_PAIRED(vmsumubm, vmsummbm, 18)

GEN_VAFORM_PAIRED(vmsumuhm, vmsumuhs, 19)

GEN_VAFORM_PAIRED(vmsumshm, vmsumshs, 20)

target-ppc/translate/vmx-ops.inc.c

+1 −0
Original line number Diff line number Diff line
@@ -219,6 +219,7 @@ GEN_VXFORM_300_EO(vctzb, 0x01, 0x18, 0x1C), 
GEN_VXFORM_300_EO(vctzh, 0x01, 0x18, 0x1D),

GEN_VXFORM_300_EO(vctzw, 0x01, 0x18, 0x1E),

GEN_VXFORM_300_EO(vctzd, 0x01, 0x18, 0x1F),

GEN_VXFORM_300(vpermr, 0x1D, 0xFF),



#define GEN_VXFORM_NOA(name, opc2, opc3)                                \

    GEN_HANDLER(name, 0x04, opc2, opc3, 0x001f0000, PPC_ALTIVEC)