From patchwork Mon Aug 13 17:52:57 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aleksandar Markovic X-Patchwork-Id: 957140 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=rt-rk.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41q3tt2fFCz9s4V for ; Tue, 14 Aug 2018 04:20:38 +1000 (AEST) Received: from localhost ([::1]:40777 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fpHSG-0006UX-0P for incoming@patchwork.ozlabs.org; Mon, 13 Aug 2018 14:20:36 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59573) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fpH3B-0005UW-QE for qemu-devel@nongnu.org; Mon, 13 Aug 2018 13:54:52 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fpH35-00076g-3p for qemu-devel@nongnu.org; Mon, 13 Aug 2018 13:54:41 -0400 Received: from mx2.rt-rk.com ([89.216.37.149]:55770 helo=mail.rt-rk.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fpH34-00073n-Hq for qemu-devel@nongnu.org; Mon, 13 Aug 2018 13:54:34 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id 9BF1B1A229B; Mon, 13 Aug 2018 19:54:10 +0200 (CEST) X-Virus-Scanned: amavisd-new at rt-rk.com Received: from rtrkw774-lin.domain.local (rtrkw774-lin.domain.local [10.10.13.43]) by mail.rt-rk.com (Postfix) with ESMTPSA id 783491A22A2; Mon, 13 Aug 2018 19:54:10 +0200 (CEST) From: Aleksandar Markovic To: qemu-devel@nongnu.org Date: Mon, 13 Aug 2018 19:52:57 +0200 Message-Id: <1534182832-554-33-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1534182832-554-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1534182832-554-1-git-send-email-aleksandar.markovic@rt-rk.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 89.216.37.149 Subject: [Qemu-devel] [PATCH v8 32/87] target/mips: Add emulation of some common nanoMIPS 32-bit instructions X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, pburton@wavecomp.com, smarkovic@wavecomp.com, riku.voipio@iki.fi, richard.henderson@linaro.org, laurent@vivier.eu, philippe.mathieu.daude@gmail.com, amarkovic@wavecomp.com, pjovanovic@wavecomp.com, aurelien@aurel32.net Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Yongbok Kim Add emulation of SIGRIE, SYSCALL, BREAK, SDBBP, ADDIU, ADDIUPC, ADDIUGP.W, LWGP, SWGP, ORI, XORI, ANDI, and other instructions. Reviewed-by: Aleksandar Markovic Signed-off-by: Yongbok Kim Signed-off-by: Aleksandar Markovic Signed-off-by: Stefan Markovic --- target/mips/translate.c | 270 +++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 269 insertions(+), 1 deletion(-) diff --git a/target/mips/translate.c b/target/mips/translate.c index 868535c..6cd8cec 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -16768,6 +16768,274 @@ static void gen_pool16c_nanomips_insn(DisasContext *ctx) } } +static int decode_nanomips_32_48_opc(CPUMIPSState *env, DisasContext *ctx) +{ + uint16_t insn; + uint32_t op; + int rt, rs; + int offset; + int imm; + + insn = cpu_lduw_code(env, ctx->base.pc_next + 2); + ctx->opcode = (ctx->opcode << 16) | insn; + + rt = extract32(ctx->opcode, 21, 5); + rs = extract32(ctx->opcode, 16, 5); + + op = extract32(ctx->opcode, 26, 6); + switch (op) { + case NM_P_ADDIU: + if (rt == 0) { + /* P.RI */ + switch (extract32(ctx->opcode, 19, 2)) { + case NM_SIGRIE: + default: + generate_exception_end(ctx, EXCP_RI); + break; + case NM_P_SYSCALL: + if ((extract32(ctx->opcode, 18, 1)) == NM_SYSCALL) { + generate_exception_end(ctx, EXCP_SYSCALL); + } else { + generate_exception_end(ctx, EXCP_RI); + } + break; + case NM_BREAK: + generate_exception_end(ctx, EXCP_BREAK); + break; + case NM_SDBBP: + if (is_uhi(extract32(ctx->opcode, 0, 19))) { + gen_helper_do_semihosting(cpu_env); + } else { + if (ctx->hflags & MIPS_HFLAG_SBRI) { + generate_exception_end(ctx, EXCP_RI); + } else { + generate_exception_end(ctx, EXCP_DBp); + } + } + break; + } + } else { + imm = extract32(ctx->opcode, 0, 16); + if (rs != 0) { + tcg_gen_addi_tl(cpu_gpr[rt], cpu_gpr[rs], imm); + tcg_gen_ext32s_tl(cpu_gpr[rt], cpu_gpr[rt]); + } else { + tcg_gen_movi_tl(cpu_gpr[rt], imm); + } + } + break; + case NM_ADDIUPC: + if (rt != 0) { + offset = sextract32(ctx->opcode, 0, 1) << 21 | + extract32(ctx->opcode, 1, 20) << 1; + target_long addr = addr_add(ctx, ctx->base.pc_next + 4, offset); + tcg_gen_movi_tl(cpu_gpr[rt], addr); + } + break; + case NM_POOL32A: + break; + case NM_P_GP_W: + switch (ctx->opcode & 0x03) { + case NM_ADDIUGP_W: + if (rt != 0) { + offset = extract32(ctx->opcode, 0, 21); + gen_op_addr_addi(ctx, cpu_gpr[rt], cpu_gpr[28], offset); + } + break; + case NM_LWGP: + gen_ld(ctx, OPC_LW, rt, 28, extract32(ctx->opcode, 2, 19) << 2); + break; + case NM_SWGP: + gen_st(ctx, OPC_SW, rt, 28, extract32(ctx->opcode, 2, 19) << 2); + break; + default: + generate_exception_end(ctx, EXCP_RI); + break; + } + break; + case NM_P48I: + return 6; + case NM_P_U12: + switch (extract32(ctx->opcode, 12, 4)) { + case NM_ORI: + gen_logic_imm(ctx, OPC_ORI, rt, rs, extract32(ctx->opcode, 0, 12)); + break; + case NM_XORI: + gen_logic_imm(ctx, OPC_XORI, rt, rs, extract32(ctx->opcode, 0, 12)); + break; + case NM_ANDI: + gen_logic_imm(ctx, OPC_ANDI, rt, rs, extract32(ctx->opcode, 0, 12)); + break; + case NM_P_SR: + switch (extract32(ctx->opcode, 20, 1)) { + case NM_PP_SR: + switch (ctx->opcode & 3) { + case NM_SAVE: + gen_save(ctx, rt, extract32(ctx->opcode, 16, 4), + extract32(ctx->opcode, 2, 1), + extract32(ctx->opcode, 3, 9) << 3); + break; + case NM_RESTORE: + case NM_RESTORE_JRC: + gen_restore(ctx, rt, extract32(ctx->opcode, 16, 4), + extract32(ctx->opcode, 2, 1), + extract32(ctx->opcode, 3, 9) << 3); + if ((ctx->opcode & 3) == NM_RESTORE_JRC) { + gen_compute_branch(ctx, OPC_JR, 2, 31, 0, 0, 0); + } + break; + default: + generate_exception_end(ctx, EXCP_RI); + break; + } + break; + case NM_P_SR_F: + generate_exception_end(ctx, EXCP_RI); + break; + } + break; + case NM_SLTI: + gen_slt_imm(ctx, OPC_SLTI, rt, rs, extract32(ctx->opcode, 0, 12)); + break; + case NM_SLTIU: + gen_slt_imm(ctx, OPC_SLTIU, rt, rs, extract32(ctx->opcode, 0, 12)); + break; + case NM_SEQI: + { + TCGv t0 = tcg_temp_new(); + + imm = extract32(ctx->opcode, 0, 12); + gen_load_gpr(t0, rs); + tcg_gen_setcondi_tl(TCG_COND_EQ, t0, t0, imm); + gen_store_gpr(t0, rt); + + tcg_temp_free(t0); + } + break; + case NM_ADDIUNEG: + imm = (int16_t) extract32(ctx->opcode, 0, 12); + gen_arith_imm(ctx, OPC_ADDIU, rt, rs, -imm); + break; + case NM_P_SHIFT: + { + int shift = extract32(ctx->opcode, 0, 5); + switch (extract32(ctx->opcode, 5, 4)) { + case NM_P_SLL: + if (rt == 0 && shift == 0) { + /* NOP */ + } else if (rt == 0 && shift == 3) { + /* EHB treat as NOP */ + } else if (rt == 0 && shift == 5) { + /* PAUSE */ + if (ctx->hflags & MIPS_HFLAG_BMASK) { + generate_exception_end(ctx, EXCP_RI); + } + } else if (rt == 0 && shift == 6) { + /* SYNC */ + gen_sync(extract32(ctx->opcode, 16, 5)); + } else { + /* SLL */ + gen_shift_imm(ctx, OPC_SLL, rt, rs, + extract32(ctx->opcode, 0, 5)); + } + break; + case NM_SRL: + gen_shift_imm(ctx, OPC_SRL, rt, rs, + extract32(ctx->opcode, 0, 5)); + break; + case NM_SRA: + gen_shift_imm(ctx, OPC_SRA, rt, rs, + extract32(ctx->opcode, 0, 5)); + break; + case NM_ROTR: + gen_shift_imm(ctx, OPC_ROTR, rt, rs, + extract32(ctx->opcode, 0, 5)); + break; + } + } + break; + case NM_P_ROTX: + break; + case NM_P_INS: + switch (((ctx->opcode >> 10) & 2) | + (extract32(ctx->opcode, 5, 1))) { + case NM_INS: + gen_bitops(ctx, OPC_INS, rt, rs, extract32(ctx->opcode, 0, 5), + extract32(ctx->opcode, 6, 5)); + break; + default: + generate_exception_end(ctx, EXCP_RI); + break; + } + break; + case NM_P_EXT: + switch (((ctx->opcode >> 10) & 2) | + (extract32(ctx->opcode, 5, 1))) { + case NM_EXT: + gen_bitops(ctx, OPC_EXT, rt, rs, extract32(ctx->opcode, 0, 5), + extract32(ctx->opcode, 6, 5)); + break; + default: + generate_exception_end(ctx, EXCP_RI); + break; + } + break; + default: + generate_exception_end(ctx, EXCP_RI); + break; + } + break; + case NM_POOL32F: + break; + case NM_POOL32S: + break; + case NM_P_LUI: + switch (extract32(ctx->opcode, 1, 1)) { + case NM_LUI: + if (rt != 0) { + tcg_gen_movi_tl(cpu_gpr[rt], + sextract32(ctx->opcode, 0, 1) << 31 | + extract32(ctx->opcode, 2, 10) << 21 | + extract32(ctx->opcode, 12, 9) << 12); + } + break; + case NM_ALUIPC: + if (rt != 0) { + offset = sextract32(ctx->opcode, 0, 1) << 31 | + extract32(ctx->opcode, 2, 10) << 21 | + extract32(ctx->opcode, 12, 9) << 12; + target_long addr; + addr = ~0xFFF & addr_add(ctx, ctx->base.pc_next + 4, offset); + tcg_gen_movi_tl(cpu_gpr[rt], addr); + } + break; + } + break; + case NM_P_GP_BH: + break; + case NM_P_LS_U12: + break; + case NM_P_LS_S9: + break; + case NM_MOVE_BALC: + break; + case NM_P_BAL: + break; + case NM_P_J: + break; + case NM_P_BR1: + break; + case NM_P_BR2: + break; + case NM_P_BRI: + break; + default: + generate_exception_end(ctx, EXCP_RI); + break; + } + return 4; +} + static int decode_nanomips_opc(CPUMIPSState *env, DisasContext *ctx) { uint32_t op; @@ -17085,7 +17353,7 @@ static int decode_nanomips_opc(CPUMIPSState *env, DisasContext *ctx) case NM_MOVEPREV: break; default: - break; + return decode_nanomips_32_48_opc(env, ctx); } return 2;