From bc9c47d5180ab28e1a3db4dca80da7512aa6839a Mon Sep 17 00:00:00 2001 From: "Yukihiro \"Matz\" Matsumoto" Date: Mon, 2 Feb 2015 09:34:24 +0900 Subject: allow endian specification of mrb files by `mrbc -e/-E` `mruby -b` now accepts both big/little endian mrb (compiled binary) files. `mrbc` generates mrb files in big endian for .mrb files and in native endian for C files (with -B option specified) by default. If you are cross compiling, you need to specify target endian by -e/-E options if it is different from host endian. --- src/dump.c | 122 +++++++++++++++++++++++++++++++++++++++++++++---------------- 1 file changed, 90 insertions(+), 32 deletions(-) (limited to 'src/dump.c') diff --git a/src/dump.c b/src/dump.c index af12ed605..09857e8c5 100644 --- a/src/dump.c +++ b/src/dump.c @@ -80,14 +80,25 @@ write_iseq_block(mrb_state *mrb, mrb_irep *irep, uint8_t *buf, uint8_t flags) cur += uint32_to_bin(irep->ilen, cur); /* number of opcode */ cur += write_padding(cur); - if (flags & FLAG_BYTEORDER_NATIVE) { - memcpy(cur, irep->iseq, irep->ilen * sizeof(mrb_code)); - cur += irep->ilen * sizeof(mrb_code); - } - else { + switch (flags & DUMP_ENDIAN_NAT) { + case DUMP_ENDIAN_BIG: + if (bigendian_p()) goto native; for (iseq_no = 0; iseq_no < irep->ilen; iseq_no++) { cur += uint32_to_bin(irep->iseq[iseq_no], cur); /* opcode */ } + break; + case DUMP_ENDIAN_LIL: + if (!bigendian_p()) goto native; + for (iseq_no = 0; iseq_no < irep->ilen; iseq_no++) { + cur += uint32l_to_bin(irep->iseq[iseq_no], cur); /* opcode */ + } + break; + + native: + case DUMP_ENDIAN_NAT: + memcpy(cur, irep->iseq, irep->ilen * sizeof(mrb_code)); + cur += irep->ilen * sizeof(mrb_code); + break; } return cur - buf; @@ -323,7 +334,7 @@ write_footer(mrb_state *mrb, uint8_t *bin) { struct rite_binary_footer footer; - memcpy(footer.section_identify, RITE_BINARY_EOF, sizeof(footer.section_identify)); + memcpy(footer.section_ident, RITE_BINARY_EOF, sizeof(footer.section_ident)); uint32_to_bin(sizeof(struct rite_binary_footer), footer.section_size); memcpy(bin, &footer, sizeof(struct rite_binary_footer)); @@ -336,7 +347,7 @@ write_section_irep_header(mrb_state *mrb, size_t section_size, uint8_t *bin) { struct rite_section_irep_header *header = (struct rite_section_irep_header*)bin; - memcpy(header->section_identify, RITE_SECTION_IREP_IDENTIFIER, sizeof(header->section_identify)); + memcpy(header->section_ident, RITE_SECTION_IREP_IDENT, sizeof(header->section_ident)); mrb_assert_int_fit(size_t, section_size, uint32_t, UINT32_MAX); uint32_to_bin((uint32_t)section_size, header->section_size); @@ -373,7 +384,7 @@ write_section_lineno_header(mrb_state *mrb, size_t section_size, uint8_t *bin) { struct rite_section_lineno_header *header = (struct rite_section_lineno_header*)bin; - memcpy(header->section_identify, RITE_SECTION_LINENO_IDENTIFIER, sizeof(header->section_identify)); + memcpy(header->section_ident, RITE_SECTION_LINENO_IDENT, sizeof(header->section_ident)); uint32_to_bin((uint32_t)section_size, header->section_size); return MRB_DUMP_OK; @@ -664,7 +675,7 @@ write_section_debug(mrb_state *mrb, mrb_irep *irep, uint8_t *cur, mrb_sym const dlen = write_debug_record(mrb, irep, cur, filenames, filenames_len); section_size += dlen; - memcpy(header->section_identify, RITE_SECTION_DEBUG_IDENTIFIER, sizeof(header->section_identify)); + memcpy(header->section_ident, RITE_SECTION_DEBUG_IDENT, sizeof(header->section_ident)); mrb_assert(section_size <= INT32_MAX); uint32_to_bin(section_size, header->section_size); @@ -803,7 +814,7 @@ write_section_lv(mrb_state *mrb, mrb_irep *irep, uint8_t *start, mrb_sym const * goto lv_section_exit; } - memcpy(header->section_identify, RITE_SECTION_LV_IDENTIFIER, sizeof(header->section_identify)); + memcpy(header->section_ident, RITE_SECTION_LV_IDENT, sizeof(header->section_ident)); diff = cur - start; mrb_assert_int_fit(ptrdiff_t, diff, size_t, SIZE_MAX); @@ -820,19 +831,23 @@ write_rite_binary_header(mrb_state *mrb, size_t binary_size, uint8_t *bin, uint8 uint16_t crc; uint32_t offset; - if (flags & FLAG_BYTEORDER_NATIVE) { - uint32_t ident = 0; - size_t i; - - for(i=0; ibinary_identify, (char*)&ident, sizeof(uint32_t)); - } - else { - memcpy(header->binary_identify, RITE_BINARY_IDENTIFIER, sizeof(header->binary_identify)); + switch (flags & DUMP_ENDIAN_NAT) { + default: + endian_big: + case DUMP_ENDIAN_BIG: + memcpy(header->binary_ident, RITE_BINARY_IDENT, sizeof(header->binary_ident)); + break; + endian_little: + case DUMP_ENDIAN_LIL: + memcpy(header->binary_ident, RITE_BINARY_IDENT_LIL, sizeof(header->binary_ident)); + break; + + case DUMP_ENDIAN_NAT: + if (bigendian_p()) goto endian_big; + goto endian_little; + break; } + memcpy(header->binary_version, RITE_BINARY_FORMAT_VER, sizeof(header->binary_version)); memcpy(header->compiler_name, RITE_COMPILER_NAME, sizeof(header->compiler_name)); memcpy(header->compiler_version, RITE_COMPILER_VERSION, sizeof(header->compiler_version)); @@ -872,8 +887,23 @@ is_lv_defined(mrb_irep *irep) return FALSE; } +static uint8_t +dump_flags(uint8_t flags, uint8_t native) +{ + if (native == FLAG_BYTEORDER_NATIVE) { + if ((flags & DUMP_ENDIAN_NAT) == 0) { + return (flags & DUMP_DEBUG_INFO) | DUMP_ENDIAN_NAT; + } + return flags; + } + if ((flags & DUMP_ENDIAN_NAT) == 0) { + return (flags & DUMP_DEBUG_INFO) | DUMP_ENDIAN_BIG; + } + return flags; +} + static int -dump_irep(mrb_state *mrb, mrb_irep *irep, int debug_info, uint8_t **bin, size_t *bin_size, uint8_t flags) +dump_irep(mrb_state *mrb, mrb_irep *irep, uint8_t flags, uint8_t **bin, size_t *bin_size) { int result = MRB_DUMP_GENERAL_FAILURE; size_t malloc_size; @@ -893,7 +923,7 @@ dump_irep(mrb_state *mrb, mrb_irep *irep, int debug_info, uint8_t **bin, size_t section_irep_size += get_irep_record_size(mrb, irep); /* DEBUG section size */ - if (debug_info) { + if (flags & DUMP_DEBUG_INFO) { if (debug_info_defined) { section_lineno_size += sizeof(struct rite_section_debug_header); /* filename table */ @@ -933,7 +963,7 @@ dump_irep(mrb_state *mrb, mrb_irep *irep, int debug_info, uint8_t **bin, size_t sizeof(struct rite_binary_footer); /* write DEBUG section */ - if (debug_info) { + if (flags & DUMP_DEBUG_INFO) { if (debug_info_defined) { result = write_section_debug(mrb, irep, cur, filenames, filenames_len); } @@ -972,13 +1002,13 @@ error_exit: } int -mrb_dump_irep(mrb_state *mrb, mrb_irep *irep, int debug_info, uint8_t **bin, size_t *bin_size) +mrb_dump_irep(mrb_state *mrb, mrb_irep *irep, uint8_t flags, uint8_t **bin, size_t *bin_size) { - return dump_irep(mrb, irep, debug_info, bin, bin_size, FLAG_BYTEORDER_NONATIVE); + return dump_irep(mrb, irep, dump_flags(flags, FLAG_BYTEORDER_NONATIVE), bin, bin_size); } int -mrb_dump_irep_binary(mrb_state *mrb, mrb_irep *irep, int debug_info, FILE* fp) +mrb_dump_irep_binary(mrb_state *mrb, mrb_irep *irep, uint8_t flags, FILE* fp) { uint8_t *bin = NULL; size_t bin_size = 0; @@ -988,7 +1018,7 @@ mrb_dump_irep_binary(mrb_state *mrb, mrb_irep *irep, int debug_info, FILE* fp) return MRB_DUMP_INVALID_ARGUMENT; } - result = dump_irep(mrb, irep, debug_info, &bin, &bin_size, FLAG_BYTEORDER_NONATIVE); + result = dump_irep(mrb, irep, dump_flags(flags, FLAG_BYTEORDER_NONATIVE), &bin, &bin_size); if (result == MRB_DUMP_OK) { if (fwrite(bin, sizeof(bin[0]), bin_size, fp) != bin_size) { result = MRB_DUMP_WRITE_FAULT; @@ -1015,8 +1045,22 @@ is_valid_c_symbol_name(const char *name) return TRUE; } +static int +dump_bigendian_p(uint8_t flags) +{ + switch (flags & DUMP_ENDIAN_NAT) { + case DUMP_ENDIAN_BIG: + return TRUE; + case DUMP_ENDIAN_LIL: + return FALSE; + default: + case DUMP_ENDIAN_NAT: + return bigendian_p(); + } +} + int -mrb_dump_irep_cfunc(mrb_state *mrb, mrb_irep *irep, int debug_info, FILE *fp, const char *initname) +mrb_dump_irep_cfunc(mrb_state *mrb, mrb_irep *irep, uint8_t flags, FILE *fp, const char *initname) { uint8_t *bin = NULL; size_t bin_size = 0, bin_idx = 0; @@ -1025,9 +1069,23 @@ mrb_dump_irep_cfunc(mrb_state *mrb, mrb_irep *irep, int debug_info, FILE *fp, co if (fp == NULL || initname == NULL || !is_valid_c_symbol_name(initname)) { return MRB_DUMP_INVALID_ARGUMENT; } - - result = dump_irep(mrb, irep, debug_info, &bin, &bin_size, FLAG_BYTEORDER_NATIVE); + flags = dump_flags(flags, FLAG_BYTEORDER_NATIVE); + result = dump_irep(mrb, irep, flags, &bin, &bin_size); if (result == MRB_DUMP_OK) { + if (!dump_bigendian_p(flags)) { + if (fprintf(fp, "/* dumped in little endian order.\n" + " use `mrbc -E` option for big endian CPU. */\n") < 0) { + mrb_free(mrb, bin); + return MRB_DUMP_WRITE_FAULT; + } + } + else { + if (fprintf(fp, "/* dumped in big endian order.\n" + " use `mrbc -e` option for better performance on little endian CPU. */\n") < 0) { + mrb_free(mrb, bin); + return MRB_DUMP_WRITE_FAULT; + } + } if (fprintf(fp, "#include \n") < 0) { /* for uint8_t under at least Darwin */ mrb_free(mrb, bin); return MRB_DUMP_WRITE_FAULT; 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