Commit 9e14a7b2 authored by Bastian Koppelmann's avatar Bastian Koppelmann
Browse files

target-tricore: add FCALL instructions of the v1.6 ISA 



Signed-off-by: default avatarBastian Koppelmann <kbastian@mail.uni-paderborn.de>
Reviewed-by: default avatarRichard Henderson <rth@twiddle.net>
parent bc3551c4

target-tricore/translate.c

+26 −0
Original line number Diff line number Diff line
@@ -3275,6 +3275,18 @@ static void gen_loop(DisasContext *ctx, int r1, int32_t offset) 
    gen_goto_tb(ctx, 0, ctx->next_pc);

}



static void gen_fcall_save_ctx(DisasContext *ctx)

{

    TCGv temp = tcg_temp_new();



    tcg_gen_addi_tl(temp, cpu_gpr_a[10], -4);

    tcg_gen_qemu_st_tl(cpu_gpr_a[11], temp, ctx->mem_idx, MO_LESL);

    tcg_gen_movi_tl(cpu_gpr_a[11], ctx->next_pc);

    tcg_gen_mov_tl(cpu_gpr_a[10], temp);



    tcg_temp_free(temp);

}



static void gen_compute_branch(DisasContext *ctx, uint32_t opc, int r1,

                               int r2 , int32_t constant , int32_t offset)

{
@@ -3369,6 +3381,14 @@ static void gen_compute_branch(DisasContext *ctx, uint32_t opc, int r1, 
        gen_helper_1arg(call, ctx->next_pc);

        gen_goto_tb(ctx, 0, EA_B_ABSOLUT(offset));

        break;

    case OPC1_32_B_FCALL:

        gen_fcall_save_ctx(ctx);

        gen_goto_tb(ctx, 0, ctx->pc + offset * 2);

        break;

    case OPC1_32_B_FCALLA:

        gen_fcall_save_ctx(ctx);

        gen_goto_tb(ctx, 0, EA_B_ABSOLUT(offset));

        break;

    case OPC1_32_B_JLA:

        tcg_gen_movi_tl(cpu_gpr_a[11], ctx->next_pc);

        /* fall through */
@@ -6311,6 +6331,10 @@ static void decode_rr_idirect(CPUTriCoreState *env, DisasContext *ctx) 
        gen_helper_1arg(call, ctx->next_pc);

        tcg_gen_andi_tl(cpu_PC, cpu_gpr_a[r1], ~0x1);

        break;

    case OPC2_32_RR_FCALLI:

        gen_fcall_save_ctx(ctx);

        tcg_gen_andi_tl(cpu_PC, cpu_gpr_a[r1], ~0x1);

        break;

    }

    tcg_gen_exit_tb(0);

    ctx->bstate = BS_BRANCH;
@@ -7946,6 +7970,8 @@ static void decode_32Bit_opc(CPUTriCoreState *env, DisasContext *ctx) 
/* B-format */

    case OPC1_32_B_CALL:

    case OPC1_32_B_CALLA:

    case OPC1_32_B_FCALL:

    case OPC1_32_B_FCALLA:

    case OPC1_32_B_J:

    case OPC1_32_B_JA:

    case OPC1_32_B_JL:

target-tricore/tricore-opcodes.h

+3 −0
Original line number Diff line number Diff line
@@ -428,6 +428,8 @@ enum { 
/* B Format */

    OPC1_32_B_CALL                                   = 0x6d,

    OPC1_32_B_CALLA                                  = 0xed,

    OPC1_32_B_FCALL                                  = 0x61,

    OPC1_32_B_FCALLA                                 = 0xe1,

    OPC1_32_B_J                                      = 0x1d,

    OPC1_32_B_JA                                     = 0x9d,

    OPC1_32_B_JL                                     = 0x5d,
@@ -1127,6 +1129,7 @@ enum { 
    OPC2_32_RR_JI                                = 0x03,

    OPC2_32_RR_JLI                               = 0x02,

    OPC2_32_RR_CALLI                             = 0x00,

    OPC2_32_RR_FCALLI                            = 0x01,

};

/*

 * RR1 Format