Commit 8ad901e5 authored by Nikunj A Dadhania's avatar Nikunj A Dadhania Committed by David Gibson
Browse files

target-ppc: Add xxextractuw instruction 



xxextractuw: VSX Vector Extract Unsigned Word

Signed-off-by: default avatarNikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Signed-off-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
parent 0f358a07

target/ppc/helper.h

+1 −0
Original line number Diff line number Diff line
@@ -535,6 +535,7 @@ DEF_HELPER_2(xvrspip, void, env, i32) 
DEF_HELPER_2(xvrspiz, void, env, i32)

DEF_HELPER_2(xxperm, void, env, i32)

DEF_HELPER_2(xxpermr, void, env, i32)

DEF_HELPER_4(xxextractuw, void, env, tl, tl, i32)



DEF_HELPER_2(efscfsi, i32, env, i32)

DEF_HELPER_2(efscfui, i32, env, i32)

target/ppc/int_helper.c

+26 −0
Original line number Diff line number Diff line
@@ -2001,6 +2001,32 @@ VEXTRACT(uw, u32) 
VEXTRACT(d, u64)

#undef VEXTRACT



void helper_xxextractuw(CPUPPCState *env, target_ulong xtn,

                        target_ulong xbn, uint32_t index)

{

    ppc_vsr_t xt, xb;

    size_t es = sizeof(uint32_t);

    uint32_t ext_index;

    int i;



    getVSR(xbn, &xb, env);

    memset(&xt, 0, sizeof(xt));



#if defined(HOST_WORDS_BIGENDIAN)

    ext_index = index;

    for (i = 0; i < es; i++, ext_index++) {

        xt.u8[8 - es + i] = xb.u8[ext_index % 16];

    }

#else

    ext_index = 15 - index;

    for (i = es - 1; i >= 0; i--, ext_index--) {

        xt.u8[8 + i] = xb.u8[ext_index % 16];

    }

#endif



    putVSR(xtn, &xt, env);

}



#define VEXT_SIGNED(name, element, mask, cast, recast)              \

void helper_##name(ppc_avr_t *r, ppc_avr_t *b)                      \

{                                                                   \

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

+30 −0
Original line number Diff line number Diff line
@@ -1180,6 +1180,36 @@ static void gen_xxsldwi(DisasContext *ctx) 
    tcg_temp_free_i64(xtl);

}



#define VSX_EXTRACT(name)                                       \

static void gen_##name(DisasContext *ctx)                       \

{                                                               \

    TCGv xt, xb;                                                \

    TCGv_i32 t0 = tcg_temp_new_i32();                           \

    uint8_t uimm = UIMM4(ctx->opcode);                          \

                                                                \

    if (unlikely(!ctx->vsx_enabled)) {                          \

        gen_exception(ctx, POWERPC_EXCP_VSXU);                  \

        return;                                                 \

    }                                                           \

    xt = tcg_const_tl(xT(ctx->opcode));                         \

    xb = tcg_const_tl(xB(ctx->opcode));                         \

    /* uimm > 15 out of bound and for                           \

     * uimm > 12 handle as per hardware in helper               \

     */                                                         \

    if (uimm > 15) {                                            \

        tcg_gen_movi_i64(cpu_vsrh(xT(ctx->opcode)), 0);         \

        tcg_gen_movi_i64(cpu_vsrl(xT(ctx->opcode)), 0);         \

        return;                                                 \

    }                                                           \

    tcg_gen_movi_i32(t0, uimm);                                 \

    gen_helper_##name(cpu_env, xt, xb, t0);                     \

    tcg_temp_free(xb);                                          \

    tcg_temp_free(xt);                                          \

    tcg_temp_free_i32(t0);                                      \

}



VSX_EXTRACT(xxextractuw)



#undef GEN_XX2FORM

#undef GEN_XX3FORM

#undef GEN_XX2IFORM

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

+5 −0
Original line number Diff line number Diff line
@@ -49,6 +49,10 @@ GEN_HANDLER2_E(name, #name, 0x3C, opc2 | 1, opc3, 0, PPC_NONE, fl2) 
GEN_HANDLER2_E(name, #name, 0x3C, opc2 | 0, opc3, 0, PPC_NONE, fl2), \

GEN_HANDLER2_E(name, #name, 0x3C, opc2 | 1, opc3, 0, PPC_NONE, fl2)



#define GEN_XX2FORM_EXT(name, opc2, opc3, fl2)                          \

GEN_HANDLER2_E(name, #name, 0x3C, opc2 | 0, opc3, 0x00100000, PPC_NONE, fl2), \

GEN_HANDLER2_E(name, #name, 0x3C, opc2 | 1, opc3, 0x00100000, PPC_NONE, fl2)



#define GEN_XX2FORM_EO(name, opc2, opc3, opc4, fl2)                          \

GEN_HANDLER2_E_2(name, #name, 0x3C, opc2 | 0, opc3, opc4, 0, PPC_NONE, fl2), \

GEN_HANDLER2_E_2(name, #name, 0x3C, opc2 | 1, opc3, opc4, 0, PPC_NONE, fl2)
@@ -280,6 +284,7 @@ GEN_XX3FORM(xxpermr, 0x08, 0x07, PPC2_ISA300), 
GEN_XX2FORM(xxspltw, 0x08, 0x0A, PPC2_VSX),

GEN_XX1FORM(xxspltib, 0x08, 0x0B, PPC2_ISA300),

GEN_XX3FORM_DM(xxsldwi, 0x08, 0x00),

GEN_XX2FORM_EXT(xxextractuw, 0x0A, 0x0A, PPC2_ISA300),



#define GEN_XXSEL_ROW(opc3) \

GEN_HANDLER2_E(xxsel, "xxsel", 0x3C, 0x18, opc3, 0, PPC_NONE, PPC2_VSX), \