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target-tricore: add SWAPMSK instructions of the v1.6.1 ISA 

Those instruction were introduced in the new Aurix platform.

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Bastian Koppelmann 2015-05-06 20:57:10 +02:00
parent 62872ebc38
commit ddd8cebe31
2 changed files with 44 additions and 0 deletions
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39
target-tricore/translate.c
View File

@ -333,6 +333,25 @@ static void gen_cmpswap(DisasContext *ctx, int reg, TCGv ea)
tcg_temp_free(temp2);
}
static void gen_swapmsk(DisasContext *ctx, int reg, TCGv ea)
{
TCGv temp = tcg_temp_new();
TCGv temp2 = tcg_temp_new();
TCGv temp3 = tcg_temp_new();
tcg_gen_qemu_ld_tl(temp, ea, ctx->mem_idx, MO_LEUL);
tcg_gen_and_tl(temp2, cpu_gpr_d[reg], cpu_gpr_d[reg+1]);
tcg_gen_andc_tl(temp3, temp, cpu_gpr_d[reg+1]);
tcg_gen_or_tl(temp2, temp2, temp3);
tcg_gen_qemu_st_tl(temp2, ea, ctx->mem_idx, MO_LEUL);
tcg_gen_mov_tl(cpu_gpr_d[reg], temp);
tcg_temp_free(temp);
tcg_temp_free(temp2);
tcg_temp_free(temp3);
}
/* We generate loads and store to core special function register (csfr) through
the function gen_mfcr and gen_mtcr. To handle access permissions, we use 3
makros R, A and E, which allow read-only, all and endinit protected access.
@ -5072,6 +5091,18 @@ static void decode_bo_addrmode_stctx_post_pre_base(CPUTriCoreState *env,
tcg_gen_addi_tl(cpu_gpr_a[r2], cpu_gpr_a[r2], off10);
gen_cmpswap(ctx, r1, cpu_gpr_a[r2]);
break;
case OPC2_32_BO_SWAPMSK_W_SHORTOFF:
tcg_gen_addi_tl(temp, cpu_gpr_a[r2], off10);
gen_swapmsk(ctx, r1, temp);
break;
case OPC2_32_BO_SWAPMSK_W_POSTINC:
gen_swapmsk(ctx, r1, cpu_gpr_a[r2]);
tcg_gen_addi_tl(cpu_gpr_a[r2], cpu_gpr_a[r2], off10);
break;
case OPC2_32_BO_SWAPMSK_W_PREINC:
tcg_gen_addi_tl(cpu_gpr_a[r2], cpu_gpr_a[r2], off10);
gen_swapmsk(ctx, r1, cpu_gpr_a[r2]);
break;
}
tcg_temp_free(temp);
tcg_temp_free(temp2);
@ -5123,6 +5154,14 @@ static void decode_bo_addrmode_ldmst_bitreverse_circular(CPUTriCoreState *env,
gen_cmpswap(ctx, r1, temp2);
gen_helper_circ_update(cpu_gpr_a[r2+1], cpu_gpr_a[r2+1], temp3);
break;
case OPC2_32_BO_SWAPMSK_W_BR:
gen_swapmsk(ctx, r1, temp2);
gen_helper_br_update(cpu_gpr_a[r2+1], cpu_gpr_a[r2+1]);
break;
case OPC2_32_BO_SWAPMSK_W_CIRC:
gen_swapmsk(ctx, r1, temp2);
gen_helper_circ_update(cpu_gpr_a[r2+1], cpu_gpr_a[r2+1], temp3);
break;
}
tcg_temp_free(temp);

5
target-tricore/tricore-opcodes.h
View File

@ -766,6 +766,9 @@ enum {
OPC2_32_BO_CMPSWAP_W_SHORTOFF = 0x23,
OPC2_32_BO_CMPSWAP_W_POSTINC = 0x03,
OPC2_32_BO_CMPSWAP_W_PREINC = 0x13,
OPC2_32_BO_SWAPMSK_W_SHORTOFF = 0x22,
OPC2_32_BO_SWAPMSK_W_POSTINC = 0x02,
OPC2_32_BO_SWAPMSK_W_PREINC = 0x12,
};
/*OPCM_32_BO_ADDRMODE_LDMST_BITREVERSE_CIRCULAR */
enum {
@ -775,6 +778,8 @@ enum {
OPC2_32_BO_SWAP_W_CIRC = 0x10,
OPC2_32_BO_CMPSWAP_W_BR = 0x03,
OPC2_32_BO_CMPSWAP_W_CIRC = 0x13,
OPC2_32_BO_SWAPMSK_W_BR = 0x02,
OPC2_32_BO_SWAPMSK_W_CIRC = 0x12,
};
/*
* BRC Format