Commit 3a16ecb0 authored by Bastian Koppelmann's avatar Bastian Koppelmann
Browse files

target-tricore: Add instructions of BO opcode format 



Add instructions of BO opcode format.
Add microcode generator functions gen_swap, gen_ldmst.
Add microcode generator functions gen_st/ld_preincr, which write back the address after the memory access.
Add helper for circular and bit reverse addr mode calculation.
Add sign extended bitmask for BO_OFF10 field.

Signed-off-by: default avatarBastian Koppelmann <kbastian@mail.uni-paderborn.de>
Reviewed-by: default avatarRichard Henderson <rth@twiddle.net>
parent b74f2b5b

target-tricore/helper.h

+3 −0
Original line number Diff line number Diff line
@@ -27,3 +27,6 @@ DEF_HELPER_2(ldlcx, void, env, i32) 
DEF_HELPER_2(lducx, void, env, i32)

DEF_HELPER_2(stlcx, void, env, i32)

DEF_HELPER_2(stucx, void, env, i32)

/* Address mode helper */

DEF_HELPER_1(br_update, i32, i32)

DEF_HELPER_2(circ_update, i32, i32, i32)

target-tricore/op_helper.c

+36 −0
Original line number Diff line number Diff line
@@ -20,6 +20,42 @@ 
#include "exec/helper-proto.h"

#include "exec/cpu_ldst.h"



/* Addressing mode helper */



static uint16_t reverse16(uint16_t val)

{

    uint8_t high = (uint8_t)(val >> 8);

    uint8_t low  = (uint8_t)(val & 0xff);



    uint16_t rh, rl;



    rl = (uint16_t)((high * 0x0202020202ULL & 0x010884422010ULL) % 1023);

    rh = (uint16_t)((low * 0x0202020202ULL & 0x010884422010ULL) % 1023);



    return (rh << 8) | rl;

}



uint32_t helper_br_update(uint32_t reg)

{

    uint32_t index = reg & 0xffff;

    uint32_t incr  = reg >> 16;

    uint32_t new_index = reverse16(reverse16(index) + reverse16(incr));

    return reg - index + new_index;

}



uint32_t helper_circ_update(uint32_t reg, uint32_t off)

{

    uint32_t index = reg & 0xffff;

    uint32_t length = reg >> 16;

    int32_t new_index = index + off;

    if (new_index < 0) {

        new_index += length;

    } else {

        new_index %= length;

    }

    return reg - index + new_index;

}



#define SSOV(env, ret, arg, len) do {               \

    int64_t max_pos = INT##len ##_MAX;              \

    int64_t max_neg = INT##len ##_MIN;              \

target-tricore/translate.c

+663 −0

File changed.

Preview size limit exceeded, changes collapsed.

target-tricore/tricore-opcodes.h

+2 −0
Original line number Diff line number Diff line
@@ -105,6 +105,8 @@ 
/* BO Format */

#define MASK_OP_BO_OFF10(op)   (MASK_BITS_SHIFT(op, 16, 21) + \

                               (MASK_BITS_SHIFT(op, 28, 31) << 6))

#define MASK_OP_BO_OFF10_SEXT(op)   (MASK_BITS_SHIFT_SEXT(op, 16, 21) + \

                                    (MASK_BITS_SHIFT_SEXT(op, 28, 31) << 6))

#define MASK_OP_BO_OP2(op)     MASK_BITS_SHIFT(op, 22, 27)

#define MASK_OP_BO_S2(op)      MASK_BITS_SHIFT(op, 12, 15)

#define MASK_OP_BO_S1D(op)     MASK_BITS_SHIFT(op, 8, 11)