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target-tricore: Add instructions of SBR opcode format

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Add instructions of SBR opcode format.
Add gen_loop micro-op generator function.

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>

Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-id: 1409572800-4116-13-git-send-email-kbastian@mail.uni-paderborn.de
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Bastian Koppelmann 2014-09-01 12:59:57 +01:00 committed by Peter Maydell
parent 70b0226250
commit a47b50db60
1 changed files with 65 additions and 1 deletions
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66
target-tricore/translate.c
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@ -388,6 +388,18 @@ static inline void gen_branch_condi(DisasContext *ctx, TCGCond cond, TCGv r1,
tcg_temp_free(temp);
}
static void gen_loop(DisasContext *ctx, int r1, int32_t offset)
{
int l1;
l1 = gen_new_label();
tcg_gen_subi_tl(cpu_gpr_a[r1], cpu_gpr_a[r1], 1);
tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_gpr_a[r1], -1, l1);
gen_goto_tb(ctx, 1, ctx->pc + offset);
gen_set_label(l1);
gen_goto_tb(ctx, 0, ctx->next_pc);
}
static void gen_compute_branch(DisasContext *ctx, uint32_t opc, int r1,
int r2 , int32_t constant , int32_t offset)
{
@ -429,8 +441,44 @@ static void gen_compute_branch(DisasContext *ctx, uint32_t opc, int r1,
gen_branch_condi(ctx, TCG_COND_NE, temp, 0, offset);
tcg_temp_free(temp);
break;
/* SBR-format jumps */
case OPC1_16_SBR_JEQ:
gen_branch_cond(ctx, TCG_COND_EQ, cpu_gpr_d[r1], cpu_gpr_d[15],
offset);
break;
case OPC1_16_SBR_JNE:
gen_branch_cond(ctx, TCG_COND_NE, cpu_gpr_d[r1], cpu_gpr_d[15],
offset);
break;
case OPC1_16_SBR_JNZ:
gen_branch_condi(ctx, TCG_COND_NE, cpu_gpr_d[r1], 0, offset);
break;
case OPC1_16_SBR_JNZ_A:
gen_branch_condi(ctx, TCG_COND_NE, cpu_gpr_a[r1], 0, offset);
break;
case OPC1_16_SBR_JGEZ:
gen_branch_condi(ctx, TCG_COND_GE, cpu_gpr_d[r1], 0, offset);
break;
case OPC1_16_SBR_JGTZ:
gen_branch_condi(ctx, TCG_COND_GT, cpu_gpr_d[r1], 0, offset);
break;
case OPC1_16_SBR_JLEZ:
gen_branch_condi(ctx, TCG_COND_LE, cpu_gpr_d[r1], 0, offset);
break;
case OPC1_16_SBR_JLTZ:
gen_branch_condi(ctx, TCG_COND_LT, cpu_gpr_d[r1], 0, offset);
break;
case OPC1_16_SBR_JZ:
gen_branch_condi(ctx, TCG_COND_EQ, cpu_gpr_d[r1], 0, offset);
break;
case OPC1_16_SBR_JZ_A:
gen_branch_condi(ctx, TCG_COND_EQ, cpu_gpr_a[r1], 0, offset);
break;
case OPC1_16_SBR_LOOP:
gen_loop(ctx, r1, offset * 2 - 32);
break;
default:
printf("Branch Error at %x\n", ctx->pc);
printf("Branch Error at %x\n", ctx->pc);
}
ctx->bstate = BS_BRANCH;
}
@ -752,6 +800,22 @@ static void decode_16Bit_opc(CPUTriCoreState *env, DisasContext *ctx)
const16 = MASK_OP_SBRN_N(ctx->opcode);
gen_compute_branch(ctx, op1, 0, 0, const16, address);
break;
/* SBR-format */
case OPC1_16_SBR_JEQ:
case OPC1_16_SBR_JGEZ:
case OPC1_16_SBR_JGTZ:
case OPC1_16_SBR_JLEZ:
case OPC1_16_SBR_JLTZ:
case OPC1_16_SBR_JNE:
case OPC1_16_SBR_JNZ:
case OPC1_16_SBR_JNZ_A:
case OPC1_16_SBR_JZ:
case OPC1_16_SBR_JZ_A:
case OPC1_16_SBR_LOOP:
r1 = MASK_OP_SBR_S2(ctx->opcode);
address = MASK_OP_SBR_DISP4(ctx->opcode);
gen_compute_branch(ctx, op1, r1, 0, 0, address);
break;
}
}