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23ce05f906
SPDX is an international standard for documenting software license requirements. Remove the existing headers and replace with a brief SPDX preamble. See: https://spdx.dev/use/specifications/ The script used to convert the files is added to "tools", and the file header templates in headers/ are updated. Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
140 lines
4.2 KiB
C
140 lines
4.2 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/* Copyright 1996-2017 The NASM Authors - All Rights Reserved */
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/*
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* rdoff.h RDOFF Object File manipulation routines header file
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*/
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#ifndef RDOFF_H
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#define RDOFF_H 1
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/*
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* RDOFF definitions. They are used by RDOFF utilities and by NASM's
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* 'outrdf2.c' output module.
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*/
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/* RDOFF format revision (currently used only when printing the version) */
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#define RDOFF2_REVISION "0.6.1"
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/* RDOFF2 file signature */
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#define RDOFF2_SIGNATURE "RDOFF2"
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/* Maximum size of an import/export label (including trailing zero) */
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#define EXIM_LABEL_MAX 256
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/* Maximum size of library or module name (including trailing zero) */
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#define MODLIB_NAME_MAX 128
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/* Maximum number of segments that we can handle in one file */
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#define RDF_MAXSEGS 64
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/* Record types that may present the RDOFF header */
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#define RDFREC_GENERIC 0
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#define RDFREC_RELOC 1
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#define RDFREC_IMPORT 2
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#define RDFREC_GLOBAL 3
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#define RDFREC_DLL 4
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#define RDFREC_BSS 5
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#define RDFREC_SEGRELOC 6
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#define RDFREC_FARIMPORT 7
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#define RDFREC_MODNAME 8
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#define RDFREC_COMMON 10
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/*
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* Generic record - contains the type and length field, plus a 128 byte
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* array 'data'
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*/
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struct GenericRec {
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uint8_t type;
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uint8_t reclen;
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char data[128];
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};
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/*
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* Relocation record
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*/
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struct RelocRec {
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uint8_t type; /* must be 1 */
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uint8_t reclen; /* content length */
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uint8_t segment; /* only 0 for code, or 1 for data supported,
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but add 64 for relative refs (ie do not require
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reloc @ loadtime, only linkage) */
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int32_t offset; /* from start of segment in which reference is loc'd */
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uint8_t length; /* 1 2 or 4 bytes */
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uint16_t refseg; /* segment to which reference refers to */
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};
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/*
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* Extern/import record
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*/
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struct ImportRec {
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uint8_t type; /* must be 2 */
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uint8_t reclen; /* content length */
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uint8_t flags; /* SYM_* flags (see below) */
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uint16_t segment; /* segment number allocated to the label for reloc
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records - label is assumed to be at offset zero
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in this segment, so linker must fix up with offset
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of segment and of offset within segment */
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char label[EXIM_LABEL_MAX]; /* zero terminated, should be written to file
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until the zero, but not after it */
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};
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/*
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* Public/export record
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*/
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struct ExportRec {
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uint8_t type; /* must be 3 */
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uint8_t reclen; /* content length */
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uint8_t flags; /* SYM_* flags (see below) */
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uint8_t segment; /* segment referred to (0/1/2) */
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int32_t offset; /* offset within segment */
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char label[EXIM_LABEL_MAX]; /* zero terminated as in import */
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};
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/*
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* DLL record
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*/
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struct DLLRec {
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uint8_t type; /* must be 4 */
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uint8_t reclen; /* content length */
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char libname[MODLIB_NAME_MAX]; /* name of library to link with at load time */
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};
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/*
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* BSS record
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*/
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struct BSSRec {
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uint8_t type; /* must be 5 */
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uint8_t reclen; /* content length */
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int32_t amount; /* number of bytes BSS to reserve */
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};
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/*
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* Module name record
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*/
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struct ModRec {
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uint8_t type; /* must be 8 */
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uint8_t reclen; /* content length */
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char modname[MODLIB_NAME_MAX]; /* module name */
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};
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/*
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* Common variable record
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*/
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struct CommonRec {
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uint8_t type; /* must be 10 */
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uint8_t reclen; /* equals 7+label length */
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uint16_t segment; /* segment number */
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int32_t size; /* size of common variable */
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uint16_t align; /* alignment (power of two) */
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char label[EXIM_LABEL_MAX]; /* zero terminated as in import */
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};
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/* Flags for ExportRec */
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#define SYM_DATA 1
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#define SYM_FUNCTION 2
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#define SYM_GLOBAL 4
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#define SYM_IMPORT 8
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#endif /* RDOFF_H */
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