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[47.51.160.125]) by smtp.gmail.com with ESMTPSA id c21sm3950355pgh.0.2021.02.17.15.41.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Feb 2021 15:41:21 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 22/35] Hexagon (target/hexagon) generator phase 3 - C preprocessor for decode tree Date: Wed, 17 Feb 2021 15:40:10 -0800 Message-Id: <20210217234023.1742406-23-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210217234023.1742406-1-richard.henderson@linaro.org> References: <20210217234023.1742406-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::52f; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x52f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, Taylor Simpson , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" From: Taylor Simpson Run the C preprocessor across the instruction definition and encoding files to expand macros and prepare the iset.py file. The resulting fill contains python data structures used to build the decode tree. Signed-off-by: Taylor Simpson Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-Id: <1612763186-18161-22-git-send-email-tsimpson@quicinc.com> Signed-off-by: Richard Henderson --- target/hexagon/gen_dectree_import.c | 188 ++++++++++++++++++++++++++++ 1 file changed, 188 insertions(+) create mode 100644 target/hexagon/gen_dectree_import.c -- 2.25.1 diff --git a/target/hexagon/gen_dectree_import.c b/target/hexagon/gen_dectree_import.c new file mode 100644 index 0000000000..5b7ecfc6b3 --- /dev/null +++ b/target/hexagon/gen_dectree_import.c @@ -0,0 +1,188 @@ +/* + * Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ + +/* + * This program generates the encodings file that is processed by + * the dectree.py script to produce the decoding tree. We use the C + * preprocessor to manipulate the files imported from the Hexagon + * architecture library. + */ +#include +#include +#include "opcodes.h" + +#define STRINGIZE(X) #X + +const char * const opcode_names[] = { +#define OPCODE(IID) STRINGIZE(IID) +#include "opcodes_def_generated.h.inc" + NULL +#undef OPCODE +}; + +/* + * Process the instruction definitions + * Scalar core instructions have the following form + * Q6INSN(A2_add,"Rd32=add(Rs32,Rt32)",ATTRIBS(), + * "Add 32-bit registers", + * { RdV=RsV+RtV;}) + */ +const char * const opcode_syntax[XX_LAST_OPCODE] = { +#define Q6INSN(TAG, BEH, ATTRIBS, DESCR, SEM) \ + [TAG] = BEH, +#define EXTINSN(TAG, BEH, ATTRIBS, DESCR, SEM) \ + [TAG] = BEH, +#include "imported/allidefs.def" +#undef Q6INSN +#undef EXTINSN +}; + +const char * const opcode_rregs[] = { +#define REGINFO(TAG, REGINFO, RREGS, WREGS) RREGS, +#define IMMINFO(TAG, SIGN, SIZE, SHAMT, SIGN2, SIZE2, SHAMT2) /* nothing */ +#include "op_regs_generated.h.inc" + NULL +#undef REGINFO +#undef IMMINFO +}; + +const char * const opcode_wregs[] = { +#define REGINFO(TAG, REGINFO, RREGS, WREGS) WREGS, +#define IMMINFO(TAG, SIGN, SIZE, SHAMT, SIGN2, SIZE2, SHAMT2) /* nothing */ +#include "op_regs_generated.h.inc" + NULL +#undef REGINFO +#undef IMMINFO +}; + +const OpcodeEncoding opcode_encodings[] = { +#define DEF_ENC32(TAG, ENCSTR) \ + [TAG] = { .encoding = ENCSTR }, +#define DEF_ENC_SUBINSN(TAG, CLASS, ENCSTR) \ + [TAG] = { .encoding = ENCSTR, .enc_class = CLASS }, +#define DEF_EXT_ENC(TAG, CLASS, ENCSTR) \ + [TAG] = { .encoding = ENCSTR, .enc_class = CLASS }, +#include "imported/encode.def" +#undef DEF_ENC32 +#undef DEF_ENC_SUBINSN +#undef DEF_EXT_ENC +}; + +static const char * const opcode_enc_class_names[XX_LAST_ENC_CLASS] = { + "NORMAL", + "16BIT", + "SUBINSN_A", + "SUBINSN_L1", + "SUBINSN_L2", + "SUBINSN_S1", + "SUBINSN_S2", + "EXT_noext", + "EXT_mmvec", +}; + +static const char *get_opcode_enc(int opcode) +{ + const char *tmp = opcode_encodings[opcode].encoding; + if (tmp == NULL) { + tmp = "MISSING ENCODING"; + } + return tmp; +} + +static const char *get_opcode_enc_class(int opcode) +{ + return opcode_enc_class_names[opcode_encodings[opcode].enc_class]; +} + +static void gen_iset_table(FILE *out) +{ + int i; + + fprintf(out, "iset = {\n"); + for (i = 0; i < XX_LAST_OPCODE; i++) { + fprintf(out, "\t\'%s\' : {\n", opcode_names[i]); + fprintf(out, "\t\t\'tag\' : \'%s\',\n", opcode_names[i]); + fprintf(out, "\t\t\'syntax\' : \'%s\',\n", opcode_syntax[i]); + fprintf(out, "\t\t\'rregs\' : \'%s\',\n", opcode_rregs[i]); + fprintf(out, "\t\t\'wregs\' : \'%s\',\n", opcode_wregs[i]); + fprintf(out, "\t\t\'enc\' : \'%s\',\n", get_opcode_enc(i)); + fprintf(out, "\t\t\'enc_class\' : \'%s\',\n", get_opcode_enc_class(i)); + fprintf(out, "\t},\n"); + } + fprintf(out, "};\n\n"); +} + +static void gen_tags_list(FILE *out) +{ + int i; + + fprintf(out, "tags = [\n"); + for (i = 0; i < XX_LAST_OPCODE; i++) { + fprintf(out, "\t\'%s\',\n", opcode_names[i]); + } + fprintf(out, "];\n\n"); +} + +static void gen_enc_ext_spaces_table(FILE *out) +{ + fprintf(out, "enc_ext_spaces = {\n"); +#define DEF_EXT_SPACE(SPACEID, ENCSTR) \ + fprintf(out, "\t\'%s\' : \'%s\',\n", #SPACEID, ENCSTR); +#include "imported/encode.def" +#undef DEF_EXT_SPACE + fprintf(out, "};\n\n"); +} + +static void gen_subinsn_groupings_table(FILE *out) +{ + fprintf(out, "subinsn_groupings = {\n"); +#define DEF_PACKED32(TAG, TYPEA, TYPEB, ENCSTR) \ + do { \ + fprintf(out, "\t\'%s\' : {\n", #TAG); \ + fprintf(out, "\t\t\'name\' : \'%s\',\n", #TAG); \ + fprintf(out, "\t\t\'class_a\' : \'%s\',\n", #TYPEA); \ + fprintf(out, "\t\t\'class_b\' : \'%s\',\n", #TYPEB); \ + fprintf(out, "\t\t\'enc\' : \'%s\',\n", ENCSTR); \ + fprintf(out, "\t},\n"); \ + } while (0); +#include "imported/encode.def" +#undef DEF_PACKED32 + fprintf(out, "};\n\n"); +} + +int main(int argc, char *argv[]) +{ + FILE *outfile; + + if (argc != 2) { + fprintf(stderr, "Usage: gen_dectree_import ouptputfile\n"); + return 1; + } + outfile = fopen(argv[1], "w"); + if (outfile == NULL) { + fprintf(stderr, "Cannot open %s for writing\n", argv[1]); + return 1; + } + + gen_iset_table(outfile); + gen_tags_list(outfile); + gen_enc_ext_spaces_table(outfile); + gen_subinsn_groupings_table(outfile); + + fclose(outfile); + return 0; +}