Squashed 'third_party/elfutils/' content from commit 555e15e
Change-Id: I61cde98949e47e5c8c09c33260de17f30921be79
git-subtree-dir: third_party/elfutils
git-subtree-split: 555e15ebe8bf1eb33d00747173cfc80cc65648a4
diff --git a/libasm/libasmP.h b/libasm/libasmP.h
new file mode 100644
index 0000000..54460cf
--- /dev/null
+++ b/libasm/libasmP.h
@@ -0,0 +1,309 @@
+/* Internal definitions for libasm.
+ Copyright (C) 2002, 2004, 2005, 2016 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 _LIBASMP_H
+#define _LIBASMP_H 1
+
+#include <stdio.h>
+
+#include <libasm.h>
+
+#include "libdwelf.h"
+
+/* gettext helper macros. */
+#define _(Str) dgettext ("elfutils", Str)
+
+
+/* Known error codes. */
+enum
+ {
+ ASM_E_NOERROR,
+ ASM_E_NOMEM, /* No more memory. */
+ ASM_E_CANNOT_CREATE, /* Output file cannot be created. */
+ ASM_E_INVALID, /* Invalid parameters. */
+ ASM_E_CANNOT_CHMOD, /* Cannot change mode of output file. */
+ ASM_E_CANNOT_RENAME, /* Cannot rename output file. */
+ ASM_E_DUPLSYM, /* Duplicate symbol definition. */
+ ASM_E_LIBELF, /* Refer to error in libelf. */
+ ASM_E_TYPE, /* Invalid section type for operation. */
+ ASM_E_IOERROR, /* Error during output of data. */
+ ASM_E_ENOSUP, /* No backend support. */
+ ASM_E_NUM /* Keep this entry as the last. */
+ };
+
+
+/* Special sections. */
+#define ASM_ABS_SCN ((Elf_Scn *) 1)
+#define ASM_COM_SCN ((Elf_Scn *) 2)
+
+
+/* And the hash table for symbols. */
+#include <symbolhash.h>
+
+
+/* Descriptor for a section. */
+struct AsmScn
+{
+ /* The underlying assembler context. */
+ AsmCtx_t *ctx;
+
+ /* Subsection ID. */
+ unsigned int subsection_id;
+
+ /* Section type. */
+ GElf_Word type;
+
+ union
+ {
+ /* Data only stored in the record for subsection zero. */
+ struct
+ {
+ /* The ELF section. */
+ Elf_Scn *scn;
+
+ /* Entry in the section header string table. */
+ Dwelf_Strent *strent;
+
+ /* Next member of group. */
+ struct AsmScn *next_in_group;
+ } main;
+
+ /* Pointer to the record for subsection zero. */
+ AsmScn_t *up;
+ } data;
+
+ /* Current offset in the (sub)section. */
+ GElf_Off offset;
+ /* Maximum alignment of the section so far. */
+ GElf_Word max_align;
+
+ /* Section content. */
+ struct AsmData
+ {
+ /* Currently used number of bytes in the block. */
+ size_t len;
+
+ /* Number of bytes allocated. */
+ size_t maxlen;
+
+ /* Pointer to the next block. */
+ struct AsmData *next;
+
+ /* The actual data. */
+ char data[flexarr_size];
+ } *content;
+
+ /* Fill pattern. */
+ struct FillPattern
+ {
+ size_t len;
+ char bytes[flexarr_size];
+ } *pattern;
+
+ /* Next subsection. */
+ AsmScn_t *subnext;
+
+ /* List of all allocated sections. */
+ AsmScn_t *allnext;
+
+ /* Name of the section. */
+ char name[flexarr_size];
+};
+
+
+/* Descriptor used for the assembling session. */
+struct AsmCtx
+{
+ /* File descriptor of the temporary file. */
+ int fd;
+
+ /* True if text output is wanted. */
+ bool textp;
+
+ /* Output file handle. */
+ union
+ {
+ /* ELF descriptor of the temporary file. */
+ Elf *elf;
+ /* I/O stream for text output. */
+ FILE *file;
+ } out;
+
+
+ /* List with defined sections. */
+ AsmScn_t *section_list;
+ /* Section header string table. */
+ Dwelf_Strtab *section_strtab;
+
+ /* Table with defined symbols. */
+ asm_symbol_tab symbol_tab;
+ /* Number of symbols in the table. */
+ unsigned int nsymbol_tab;
+ /* Symbol string table. */
+ Dwelf_Strtab *symbol_strtab;
+
+ /* List of section groups. */
+ struct AsmScnGrp *groups;
+ /* Number of section groups. */
+ size_t ngroups;
+
+ /* Current required alignment for common symbols. */
+ GElf_Word common_align;
+
+ /* Lock to handle multithreaded programs. */
+ rwlock_define (,lock);
+
+ /* Counter for temporary symbols. */
+ unsigned int tempsym_count;
+
+ /* Name of the output file. */
+ char *fname;
+ /* The name of the temporary file. */
+ char tmp_fname[flexarr_size];
+};
+
+
+/* Descriptor for a symbol. */
+struct AsmSym
+{
+ /* Reference to the section which contains the symbol. */
+ AsmScn_t *scn;
+
+ /* Type of the symbol. */
+ int8_t type;
+ /* Binding of the symbol. */
+ int8_t binding;
+
+ /* Size of the symbol. */
+ GElf_Xword size;
+
+ /* Offset in the section. */
+ GElf_Off offset;
+
+ /* Symbol table index of the symbol in the symbol table. */
+ size_t symidx;
+
+ /* Reference to name of the symbol. */
+ Dwelf_Strent *strent;
+};
+
+
+/* Descriptor for section group. */
+struct AsmScnGrp
+{
+ /* Entry in the section header string table. */
+ Dwelf_Strent *strent;
+
+ /* The ELF section. */
+ Elf_Scn *scn;
+
+ /* The signature. */
+ struct AsmSym *signature;
+
+ /* First member. */
+ struct AsmScn *members;
+ /* Number of members. */
+ size_t nmembers;
+
+ /* Flags. */
+ Elf32_Word flags;
+
+ /* Next group. */
+ struct AsmScnGrp *next;
+
+ /* Name of the section group. */
+ char name[flexarr_size];
+};
+
+
+/* Descriptor for disassembler. */
+struct DisasmCtx
+{
+ /* Handle for the backend library with the disassembler routine. */
+ Ebl *ebl;
+
+ /* ELF file containing all the data passed to the function. This
+ allows to look up symbols. */
+ Elf *elf;
+
+ /* Callback function to determine symbol names. */
+ DisasmGetSymCB_t symcb;
+};
+
+
+/* The default fill pattern: one zero byte. */
+extern const struct FillPattern *__libasm_default_pattern
+ attribute_hidden;
+
+
+/* Ensure there are at least LEN bytes available in the output buffer
+ for ASMSCN. */
+extern int __libasm_ensure_section_space (AsmScn_t *asmscn, size_t len)
+ internal_function;
+
+/* Free all resources associated with the assembler context. */
+extern void __libasm_finictx (AsmCtx_t *ctx) internal_function;
+
+/* Set error code. */
+extern void __libasm_seterrno (int err) internal_function;
+
+/* Return handle for the named section. If it was not used before
+ create it. */
+extern AsmScn_t *__asm_newscn_internal (AsmCtx_t *ctx, const char *scnname,
+ GElf_Word type, GElf_Xword flags)
+ attribute_hidden;
+
+
+/* Internal aliases of the asm_addintXX functions. */
+extern int __asm_addint8_internal (AsmScn_t *asmscn, int8_t num)
+ attribute_hidden;
+extern int __asm_addint16_internal (AsmScn_t *asmscn, int16_t num)
+ attribute_hidden;
+extern int __asm_addint32_internal (AsmScn_t *asmscn, int32_t num)
+ attribute_hidden;
+extern int __asm_addint64_internal (AsmScn_t *asmscn, int64_t num)
+ attribute_hidden;
+
+
+/* Produce disassembly output for given memory and output it using the
+ given callback functions. */
+extern int __disasm_cb_internal (DisasmCtx_t *ctx, const uint8_t **startp,
+ const uint8_t *end, GElf_Addr addr,
+ const char *fmt, DisasmOutputCB_t outcb,
+ void *outcbarp, void *symcbarg)
+ attribute_hidden;
+
+
+/* Test whether given symbol is an internal symbol and if yes, whether
+ we should nevertheless emit it in the symbol table. */
+// XXX The second part should probably be controlled by an option which
+// isn't implemented yet
+// XXX Also, the format will change with the backend.
+#define asm_emit_symbol_p(name) (strncmp (name, ".L", 2) != 0)
+
+#endif /* libasmP.h */