mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-23 15:32:26 +00:00
203 lines
6.9 KiB
C
203 lines
6.9 KiB
C
/* Interface for libasm.
|
|
Copyright (C) 2002, 2005, 2008 Red Hat, Inc.
|
|
This file is part of elfutils.
|
|
|
|
This file is free software; you can redistribute it and/or modify
|
|
it under the terms of either
|
|
|
|
* the GNU Lesser General Public License as published by the Free
|
|
Software Foundation; either version 3 of the License, or (at
|
|
your option) any later version
|
|
|
|
or
|
|
|
|
* 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
|
|
|
|
or both in parallel, as here.
|
|
|
|
elfutils 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 copies of the GNU General Public License and
|
|
the GNU Lesser General Public License along with this program. If
|
|
not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _LIBASM_H
|
|
#define _LIBASM_H 1
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
#include <libebl.h>
|
|
|
|
|
|
/* Opaque type for the assembler context descriptor. */
|
|
typedef struct AsmCtx AsmCtx_t;
|
|
|
|
/* Opaque type for a section. */
|
|
typedef struct AsmScn AsmScn_t;
|
|
|
|
/* Opaque type for a section group. */
|
|
typedef struct AsmScnGrp AsmScnGrp_t;
|
|
|
|
/* Opaque type for a symbol. */
|
|
typedef struct AsmSym AsmSym_t;
|
|
|
|
|
|
/* Opaque type for the disassembler context descriptor. */
|
|
typedef struct DisasmCtx DisasmCtx_t;
|
|
|
|
/* Type used for callback functions to retrieve symbol name. The
|
|
symbol reference is in the section designated by the second parameter
|
|
at an offset described by the first parameter. The value is the
|
|
third parameter. */
|
|
typedef int (*DisasmGetSymCB_t) (GElf_Addr, Elf32_Word, GElf_Addr, char **,
|
|
size_t *, void *);
|
|
|
|
/* Output function callback. */
|
|
typedef int (*DisasmOutputCB_t) (char *, size_t, void *);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Create output file and return descriptor for assembler context. If
|
|
TEXTP is true the output is an assembler format text file.
|
|
Otherwise an object file is created. The MACHINE parameter
|
|
corresponds to an EM_ constant from <elf.h>, KLASS specifies the
|
|
class (32- or 64-bit), and DATA specifies the byte order (little or
|
|
big endian). */
|
|
extern AsmCtx_t *asm_begin (const char *fname, Ebl *ebl, bool textp);
|
|
|
|
/* Abort the operation on the assembler context and free all resources. */
|
|
extern int asm_abort (AsmCtx_t *ctx);
|
|
|
|
/* Finalize output file and free all resources. */
|
|
extern int asm_end (AsmCtx_t *ctx);
|
|
|
|
|
|
/* Return handle for the named section. If it was not used before
|
|
create it. */
|
|
extern AsmScn_t *asm_newscn (AsmCtx_t *ctx, const char *scnname,
|
|
GElf_Word type, GElf_Xword flags);
|
|
|
|
|
|
/* Similar to 'asm_newscn', but make it part of section group GRP. */
|
|
extern AsmScn_t *asm_newscn_ingrp (AsmCtx_t *ctx, const char *scnname,
|
|
GElf_Word type, GElf_Xword flags,
|
|
AsmScnGrp_t *grp);
|
|
|
|
/* Create new subsection NR in the given section. */
|
|
extern AsmScn_t *asm_newsubscn (AsmScn_t *asmscn, unsigned int nr);
|
|
|
|
|
|
/* Return handle for new section group. The signature symbol can be
|
|
set later. */
|
|
extern AsmScnGrp_t *asm_newscngrp (AsmCtx_t *ctx, const char *grpname,
|
|
AsmSym_t *signature, Elf32_Word flags);
|
|
|
|
/* Set or overwrite signature symbol for group. */
|
|
extern int asm_scngrp_newsignature (AsmScnGrp_t *grp, AsmSym_t *signature);
|
|
|
|
|
|
/* Add zero terminated string STR of size LEN to (sub)section ASMSCN. */
|
|
extern int asm_addstrz (AsmScn_t *asmscn, const char *str, size_t len);
|
|
|
|
/* Add 8-bit signed integer NUM to (sub)section ASMSCN. */
|
|
extern int asm_addint8 (AsmScn_t *asmscn, int8_t num);
|
|
|
|
/* Add 8-bit unsigned integer NUM to (sub)section ASMSCN. */
|
|
extern int asm_adduint8 (AsmScn_t *asmscn, uint8_t num);
|
|
|
|
/* Add 16-bit signed integer NUM to (sub)section ASMSCN. */
|
|
extern int asm_addint16 (AsmScn_t *asmscn, int16_t num);
|
|
|
|
/* Add 16-bit unsigned integer NUM to (sub)section ASMSCN. */
|
|
extern int asm_adduint16 (AsmScn_t *asmscn, uint16_t num);
|
|
|
|
/* Add 32-bit signed integer NUM to (sub)section ASMSCN. */
|
|
extern int asm_addint32 (AsmScn_t *asmscn, int32_t num);
|
|
|
|
/* Add 32-bit unsigned integer NUM to (sub)section ASMSCN. */
|
|
extern int asm_adduint32 (AsmScn_t *asmscn, uint32_t num);
|
|
|
|
/* Add 64-bit signed integer NUM to (sub)section ASMSCN. */
|
|
extern int asm_addint64 (AsmScn_t *asmscn, int64_t num);
|
|
|
|
/* Add 64-bit unsigned integer NUM to (sub)section ASMSCN. */
|
|
extern int asm_adduint64 (AsmScn_t *asmscn, uint64_t num);
|
|
|
|
|
|
/* Add signed little endian base 128 integer NUM to (sub)section ASMSCN. */
|
|
extern int asm_addsleb128 (AsmScn_t *asmscn, int32_t num);
|
|
|
|
/* Add unsigned little endian base 128 integer NUM to (sub)section ASMSCN. */
|
|
extern int asm_adduleb128 (AsmScn_t *asmscn, uint32_t num);
|
|
|
|
|
|
/* Define new symbol NAME for current position in given section ASMSCN. */
|
|
extern AsmSym_t *asm_newsym (AsmScn_t *asmscn, const char *name,
|
|
GElf_Xword size, int type, int binding);
|
|
|
|
|
|
/* Define new common symbol NAME with given SIZE and alignment. */
|
|
extern AsmSym_t *asm_newcomsym (AsmCtx_t *ctx, const char *name,
|
|
GElf_Xword size, GElf_Addr align);
|
|
|
|
/* Define new common symbol NAME with given SIZE, VALUE, TYPE, and BINDING. */
|
|
extern AsmSym_t *asm_newabssym (AsmCtx_t *ctx, const char *name,
|
|
GElf_Xword size, GElf_Addr value,
|
|
int type, int binding);
|
|
|
|
|
|
/* Align (sub)section offset according to VALUE. */
|
|
extern int asm_align (AsmScn_t *asmscn, GElf_Word value);
|
|
|
|
/* Set the byte pattern used to fill gaps created by alignment. */
|
|
extern int asm_fill (AsmScn_t *asmscn, void *bytes, size_t len);
|
|
|
|
|
|
/* Return ELF descriptor created for the output file of the given context. */
|
|
extern Elf *asm_getelf (AsmCtx_t *ctx);
|
|
|
|
|
|
/* Return error code of last failing function call. This value is kept
|
|
separately for each thread. */
|
|
extern int asm_errno (void);
|
|
|
|
/* Return error string for ERROR. If ERROR is zero, return error string
|
|
for most recent error or NULL is none occurred. If ERROR is -1 the
|
|
behaviour is similar to the last case except that not NULL but a legal
|
|
string is returned. */
|
|
extern const char *asm_errmsg (int __error);
|
|
|
|
|
|
/* Create context descriptor for disassembler. */
|
|
extern DisasmCtx_t *disasm_begin (Ebl *ebl, Elf *elf, DisasmGetSymCB_t symcb);
|
|
|
|
/* Release descriptor for disassembler. */
|
|
extern int disasm_end (DisasmCtx_t *ctx);
|
|
|
|
/* Produce of disassembly output for given memory, store text in
|
|
provided buffer. */
|
|
extern int disasm_str (DisasmCtx_t *ctx, const uint8_t **startp,
|
|
const uint8_t *end, GElf_Addr addr, const char *fmt,
|
|
char **bufp, size_t len, void *symcbarg);
|
|
|
|
/* Produce disassembly output for given memory and output it using the
|
|
given callback functions. */
|
|
extern int disasm_cb (DisasmCtx_t *ctx, const uint8_t **startp,
|
|
const uint8_t *end, GElf_Addr addr, const char *fmt,
|
|
DisasmOutputCB_t outcb, void *outcbarg, void *symcbarg);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* libasm.h */
|