| /* ----------------------------------------------------------------------- * |
| * |
| * Copyright 1996-2017 The NASM Authors - All Rights Reserved |
| * See the file AUTHORS included with the NASM distribution for |
| * the specific copyright holders. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
| * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * ----------------------------------------------------------------------- */ |
| |
| /* |
| * rdoff.h RDOFF Object File manipulation routines header file |
| */ |
| |
| #ifndef RDOFF_H |
| #define RDOFF_H 1 |
| |
| /* |
| * RDOFF definitions. They are used by RDOFF utilities and by NASM's |
| * 'outrdf2.c' output module. |
| */ |
| |
| /* RDOFF format revision (currently used only when printing the version) */ |
| #define RDOFF2_REVISION "0.6.1" |
| |
| /* RDOFF2 file signature */ |
| #define RDOFF2_SIGNATURE "RDOFF2" |
| |
| /* Maximum size of an import/export label (including trailing zero) */ |
| #define EXIM_LABEL_MAX 256 |
| |
| /* Maximum size of library or module name (including trailing zero) */ |
| #define MODLIB_NAME_MAX 128 |
| |
| /* Maximum number of segments that we can handle in one file */ |
| #define RDF_MAXSEGS 64 |
| |
| /* Record types that may present the RDOFF header */ |
| #define RDFREC_GENERIC 0 |
| #define RDFREC_RELOC 1 |
| #define RDFREC_IMPORT 2 |
| #define RDFREC_GLOBAL 3 |
| #define RDFREC_DLL 4 |
| #define RDFREC_BSS 5 |
| #define RDFREC_SEGRELOC 6 |
| #define RDFREC_FARIMPORT 7 |
| #define RDFREC_MODNAME 8 |
| #define RDFREC_COMMON 10 |
| |
| /* |
| * Generic record - contains the type and length field, plus a 128 byte |
| * array 'data' |
| */ |
| struct GenericRec { |
| uint8_t type; |
| uint8_t reclen; |
| char data[128]; |
| }; |
| |
| /* |
| * Relocation record |
| */ |
| struct RelocRec { |
| uint8_t type; /* must be 1 */ |
| uint8_t reclen; /* content length */ |
| uint8_t segment; /* only 0 for code, or 1 for data supported, |
| but add 64 for relative refs (ie do not require |
| reloc @ loadtime, only linkage) */ |
| int32_t offset; /* from start of segment in which reference is loc'd */ |
| uint8_t length; /* 1 2 or 4 bytes */ |
| uint16_t refseg; /* segment to which reference refers to */ |
| }; |
| |
| /* |
| * Extern/import record |
| */ |
| struct ImportRec { |
| uint8_t type; /* must be 2 */ |
| uint8_t reclen; /* content length */ |
| uint8_t flags; /* SYM_* flags (see below) */ |
| uint16_t segment; /* segment number allocated to the label for reloc |
| records - label is assumed to be at offset zero |
| in this segment, so linker must fix up with offset |
| of segment and of offset within segment */ |
| char label[EXIM_LABEL_MAX]; /* zero terminated, should be written to file |
| until the zero, but not after it */ |
| }; |
| |
| /* |
| * Public/export record |
| */ |
| struct ExportRec { |
| uint8_t type; /* must be 3 */ |
| uint8_t reclen; /* content length */ |
| uint8_t flags; /* SYM_* flags (see below) */ |
| uint8_t segment; /* segment referred to (0/1/2) */ |
| int32_t offset; /* offset within segment */ |
| char label[EXIM_LABEL_MAX]; /* zero terminated as in import */ |
| }; |
| |
| /* |
| * DLL record |
| */ |
| struct DLLRec { |
| uint8_t type; /* must be 4 */ |
| uint8_t reclen; /* content length */ |
| char libname[MODLIB_NAME_MAX]; /* name of library to link with at load time */ |
| }; |
| |
| /* |
| * BSS record |
| */ |
| struct BSSRec { |
| uint8_t type; /* must be 5 */ |
| uint8_t reclen; /* content length */ |
| int32_t amount; /* number of bytes BSS to reserve */ |
| }; |
| |
| /* |
| * Module name record |
| */ |
| struct ModRec { |
| uint8_t type; /* must be 8 */ |
| uint8_t reclen; /* content length */ |
| char modname[MODLIB_NAME_MAX]; /* module name */ |
| }; |
| |
| /* |
| * Common variable record |
| */ |
| struct CommonRec { |
| uint8_t type; /* must be 10 */ |
| uint8_t reclen; /* equals 7+label length */ |
| uint16_t segment; /* segment number */ |
| int32_t size; /* size of common variable */ |
| uint16_t align; /* alignment (power of two) */ |
| char label[EXIM_LABEL_MAX]; /* zero terminated as in import */ |
| }; |
| |
| /* Flags for ExportRec */ |
| #define SYM_DATA 1 |
| #define SYM_FUNCTION 2 |
| #define SYM_GLOBAL 4 |
| #define SYM_IMPORT 8 |
| |
| #endif /* RDOFF_H */ |