From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57697) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X6jGu-0004qP-Hl for qemu-devel@nongnu.org; Mon, 14 Jul 2014 12:38:42 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1X6jGn-00023Q-6s for qemu-devel@nongnu.org; Mon, 14 Jul 2014 12:38:36 -0400 Received: from mail.uni-paderborn.de ([131.234.142.9]:64348) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1X6jGn-000230-0J for qemu-devel@nongnu.org; Mon, 14 Jul 2014 12:38:29 -0400 From: Bastian Koppelmann Date: Mon, 14 Jul 2014 18:41:08 +0100 Message-Id: <1405359671-25985-13-git-send-email-kbastian@mail.uni-paderborn.de> In-Reply-To: <1405359671-25985-1-git-send-email-kbastian@mail.uni-paderborn.de> References: <1405359671-25985-1-git-send-email-kbastian@mail.uni-paderborn.de> Subject: [Qemu-devel] [PATCH v2 12/15] target-tricore: Add instructions of SBR opcode format List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, rth@twiddle.net Add instructions of SBR opcode format. Add gen_loop micro-op generator function. Signed-off-by: Bastian Koppelmann --- v1 -> v2: - Change gen_loop() to subtract first and then compare to -1. - Change gen_loop() using next_pc insted of insn_bytes. - Change SBR_LOOP instructions to use offset * 2 -32. target-tricore/translate.c | 66 +++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 65 insertions(+), 1 deletion(-) diff --git a/target-tricore/translate.c b/target-tricore/translate.c index bcc3392..a4f1419 100644 --- a/target-tricore/translate.c +++ b/target-tricore/translate.c @@ -244,6 +244,18 @@ static inline void gen_branch_condi(DisasContext *ctx, int 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) { @@ -284,8 +296,44 @@ static void gen_compute_branch(DisasContext *ctx, uint32_t opc, 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_NE, 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; } @@ -606,6 +654,22 @@ 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; } } -- 2.0.1