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target-tricore: Add instructions of RRPW opcode format 

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Bastian Koppelmann 2015-01-19 15:13:00 +00:00
parent 12f323e66e
commit 8fb9d0eb68
1 changed files with 70 additions and 0 deletions
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70
target-tricore/translate.c
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@ -4991,6 +4991,57 @@ static void decode_rr2_mul(CPUTriCoreState *env, DisasContext *ctx)
}
}
/* RRPW format */
static void decode_rrpw_extract_insert(CPUTriCoreState *env, DisasContext *ctx)
{
uint32_t op2;
int r1, r2, r3;
int32_t pos, width;
op2 = MASK_OP_RRPW_OP2(ctx->opcode);
r1 = MASK_OP_RRPW_S1(ctx->opcode);
r2 = MASK_OP_RRPW_S2(ctx->opcode);
r3 = MASK_OP_RRPW_D(ctx->opcode);
pos = MASK_OP_RRPW_POS(ctx->opcode);
width = MASK_OP_RRPW_WIDTH(ctx->opcode);
switch (op2) {
case OPC2_32_RRPW_EXTR:
if (pos + width <= 31) {
/* optimize special cases */
if ((pos == 0) && (width == 8)) {
tcg_gen_ext8s_tl(cpu_gpr_d[r3], cpu_gpr_d[r1]);
} else if ((pos == 0) && (width == 16)) {
tcg_gen_ext16s_tl(cpu_gpr_d[r3], cpu_gpr_d[r1]);
} else {
tcg_gen_shli_tl(cpu_gpr_d[r3], cpu_gpr_d[r1], 32 - pos - width);
tcg_gen_sari_tl(cpu_gpr_d[r3], cpu_gpr_d[r3], 32 - width);
}
}
break;
case OPC2_32_RRPW_EXTR_U:
if (width == 0) {
tcg_gen_movi_tl(cpu_gpr_d[r3], 0);
} else {
tcg_gen_shri_tl(cpu_gpr_d[r3], cpu_gpr_d[r1], pos);
tcg_gen_andi_tl(cpu_gpr_d[r3], cpu_gpr_d[r3], ~0u >> (32-width));
}
break;
case OPC2_32_RRPW_IMASK:
if (pos + width <= 31) {
tcg_gen_movi_tl(cpu_gpr_d[r3+1], ((1u << width) - 1) << pos);
tcg_gen_shli_tl(cpu_gpr_d[r3], cpu_gpr_d[r2], pos);
}
break;
case OPC2_32_RRPW_INSERT:
if (pos + width <= 31) {
tcg_gen_deposit_tl(cpu_gpr_d[r3], cpu_gpr_d[r1], cpu_gpr_d[r2],
width, pos);
}
break;
}
}
static void decode_32Bit_opc(CPUTriCoreState *env, DisasContext *ctx)
{
int op1;
@ -5255,6 +5306,25 @@ static void decode_32Bit_opc(CPUTriCoreState *env, DisasContext *ctx)
case OPCM_32_RR2_MUL:
decode_rr2_mul(env, ctx);
break;
/* RRPW format */
case OPCM_32_RRPW_EXTRACT_INSERT:
decode_rrpw_extract_insert(env, ctx);
break;
case OPC1_32_RRPW_DEXTR:
r1 = MASK_OP_RRPW_S1(ctx->opcode);
r2 = MASK_OP_RRPW_S2(ctx->opcode);
r3 = MASK_OP_RRPW_D(ctx->opcode);
const16 = MASK_OP_RRPW_POS(ctx->opcode);
if (r1 == r2) {
tcg_gen_rotli_tl(cpu_gpr_d[r3], cpu_gpr_d[r1], const16);
} else {
temp = tcg_temp_new();
tcg_gen_shli_tl(cpu_gpr_d[r3], cpu_gpr_d[r2], const16);
tcg_gen_shri_tl(temp, cpu_gpr_d[r1], 32 - const16);
tcg_gen_or_tl(cpu_gpr_d[r3], cpu_gpr_d[r3], temp);
tcg_temp_free(temp);
}
break;
}
}