From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libiberty/simple-object-common.h | 355 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 355 insertions(+) create mode 100644 libiberty/simple-object-common.h (limited to 'libiberty/simple-object-common.h') diff --git a/libiberty/simple-object-common.h b/libiberty/simple-object-common.h new file mode 100644 index 000000000..264b17995 --- /dev/null +++ b/libiberty/simple-object-common.h @@ -0,0 +1,355 @@ +/* simple-object-common.h -- common structs for object file manipulation. + Copyright (C) 2010 Free Software Foundation, Inc. + +This file is part of the libiberty library. +Libiberty is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public +License as published by the Free Software Foundation; either +version 2 of the License, or (at your option) any later version. + +Libiberty 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with libiberty; see the file COPYING.LIB. If not, +write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, +Boston, MA 02110-1301, USA. */ + +/* Forward reference. */ +struct simple_object_functions; + +/* An object file opened for reading. */ + +struct simple_object_read_struct +{ + /* The file descriptor. */ + int descriptor; + /* The offset within the file. */ + off_t offset; + /* The functions which do the actual work. */ + const struct simple_object_functions *functions; + /* Private data for the object file format. */ + void *data; +}; + +/* Object file attributes. */ + +struct simple_object_attributes_struct +{ + /* The functions which do the actual work. */ + const struct simple_object_functions *functions; + /* Private data for the object file format. */ + void *data; +}; + +/* An object file being created. */ + +struct simple_object_write_struct +{ + /* The functions which do the actual work. */ + const struct simple_object_functions *functions; + /* The segment_name argument from the user. */ + char *segment_name; + /* The start of the list of sections. */ + simple_object_write_section *sections; + /* The last entry in the list of sections. */ + simple_object_write_section *last_section; + /* Private data for the object file format. */ + void *data; +}; + +/* A section in an object file being created. */ + +struct simple_object_write_section_struct +{ + /* Next in the list of sections attached to an + simple_object_write. */ + simple_object_write_section *next; + /* The name of this section. */ + char *name; + /* The required alignment. */ + unsigned int align; + /* The first data attached to this section. */ + struct simple_object_write_section_buffer *buffers; + /* The last data attached to this section. */ + struct simple_object_write_section_buffer *last_buffer; +}; + +/* Data attached to a section. */ + +struct simple_object_write_section_buffer +{ + /* The next data for this section. */ + struct simple_object_write_section_buffer *next; + /* The size of the buffer. */ + size_t size; + /* The actual bytes. */ + const void *buffer; + /* A buffer to free, or NULL. */ + void *free_buffer; +}; + +/* The number of bytes we read from the start of the file to pass to + the match function. */ +#define SIMPLE_OBJECT_MATCH_HEADER_LEN (16) + +/* Format-specific object file functions. */ + +struct simple_object_functions +{ + /* If this file matches these functions, return a new value for the + private data for an simple_object_read. HEADER is the first 16 + bytes of the file. DESCRIPTOR, OFFSET, SEGMENT_NAME, ERRMSG, and + ERR are as for simple_object_open_read. If this file does not + match, this function should return NULL with *ERRMSG set to + NULL. */ + void *(*match) (unsigned char header[SIMPLE_OBJECT_MATCH_HEADER_LEN], + int descriptor, off_t offset, const char *segment_name, + const char **errmsg, int *err); + + /* Implement simple_object_find_sections. */ + const char *(*find_sections) (simple_object_read *, + int (*pfn) (void *, const char *, + off_t offset, off_t length), + void *data, + int *err); + + /* Return the private data for the attributes for SOBJ. */ + void *(*fetch_attributes) (simple_object_read *sobj, const char **errmsg, + int *err); + + /* Release the private data for an simple_object_read. */ + void (*release_read) (void *); + + /* Merge the private data for the attributes of two files. If they + could be linked together, return NULL. Otherwise return an error + message. */ + const char *(*attributes_merge) (void *, void *, int *err); + + /* Release the private data for an simple_object_attributes. */ + void (*release_attributes) (void *); + + /* Start creating an object file. */ + void *(*start_write) (void *attributes_data, const char **errmsg, + int *err); + + /* Write the complete object file. */ + const char *(*write_to_file) (simple_object_write *sobj, int descriptor, + int *err); + + /* Release the private data for an simple_object_write. */ + void (*release_write) (void *); +}; + +/* The known object file formats. */ + +extern const struct simple_object_functions simple_object_coff_functions; +extern const struct simple_object_functions simple_object_elf_functions; +extern const struct simple_object_functions simple_object_mach_o_functions; + +/* Read SIZE bytes from DESCRIPTOR at file offset OFFSET into BUFFER. + Return non-zero on success. On failure return 0 and set *ERRMSG + and *ERR. */ + +extern int +simple_object_internal_read (int descriptor, off_t offset, + unsigned char *buffer, size_t size, + const char **errmsg, int *err); + +/* Write SIZE bytes from BUFFER to DESCRIPTOR at file offset OFFSET. + Return non-zero on success. On failure return 0 and set *ERRMSG + and *ERR. */ + +extern int +simple_object_internal_write (int descriptor, off_t offset, + const unsigned char *buffer, size_t size, + const char **errmsg, int *err); + +/* Define ulong_type as an unsigned 64-bit type if available. + Otherwise just make it unsigned long. */ + +#ifdef UNSIGNED_64BIT_TYPE +__extension__ typedef UNSIGNED_64BIT_TYPE ulong_type; +#else +typedef unsigned long ulong_type; +#endif + +/* Fetch a big-endian 16-bit value. */ + +static inline unsigned short +simple_object_fetch_big_16 (const unsigned char *buf) +{ + return ((unsigned short) buf[0] << 8) | (unsigned short) buf[1]; +} + +/* Fetch a little-endian 16-bit value. */ + +static inline unsigned short +simple_object_fetch_little_16 (const unsigned char *buf) +{ + return ((unsigned short) buf[1] << 8) | (unsigned short) buf[0]; +} + +/* Fetch a big-endian 32-bit value. */ + +static inline unsigned int +simple_object_fetch_big_32 (const unsigned char *buf) +{ + return (((unsigned int) buf[0] << 24) + | ((unsigned int) buf[1] << 16) + | ((unsigned int) buf[2] << 8) + | (unsigned int) buf[3]); +} + +/* Fetch a little-endian 32-bit value. */ + +static inline unsigned int +simple_object_fetch_little_32 (const unsigned char *buf) +{ + return (((unsigned int) buf[3] << 24) + | ((unsigned int) buf[2] << 16) + | ((unsigned int) buf[1] << 8) + | (unsigned int) buf[0]); +} + +/* Fetch a big-endian 32-bit value as a ulong_type. */ + +static inline ulong_type +simple_object_fetch_big_32_ulong (const unsigned char *buf) +{ + return (ulong_type) simple_object_fetch_big_32 (buf); +} + +/* Fetch a little-endian 32-bit value as a ulong_type. */ + +static inline ulong_type +simple_object_fetch_little_32_ulong (const unsigned char *buf) +{ + return (ulong_type) simple_object_fetch_little_32 (buf); +} + +#ifdef UNSIGNED_64BIT_TYPE + +/* Fetch a big-endian 64-bit value. */ + +static inline ulong_type +simple_object_fetch_big_64 (const unsigned char *buf) +{ + return (((ulong_type) buf[0] << 56) + | ((ulong_type) buf[1] << 48) + | ((ulong_type) buf[2] << 40) + | ((ulong_type) buf[3] << 32) + | ((ulong_type) buf[4] << 24) + | ((ulong_type) buf[5] << 16) + | ((ulong_type) buf[6] << 8) + | (ulong_type) buf[7]); +} + +/* Fetch a little-endian 64-bit value. */ + +static inline ulong_type +simple_object_fetch_little_64 (const unsigned char *buf) +{ + return (((ulong_type) buf[7] << 56) + | ((ulong_type) buf[6] << 48) + | ((ulong_type) buf[5] << 40) + | ((ulong_type) buf[4] << 32) + | ((ulong_type) buf[3] << 24) + | ((ulong_type) buf[2] << 16) + | ((ulong_type) buf[1] << 8) + | (ulong_type) buf[0]); +} + +#endif + +/* Store a big-endian 16-bit value. */ + +static inline void +simple_object_set_big_16 (unsigned char *buf, unsigned short val) +{ + buf[0] = (val >> 8) & 0xff; + buf[1] = val & 0xff; +} + +/* Store a little-endian 16-bit value. */ + +static inline void +simple_object_set_little_16 (unsigned char *buf, unsigned short val) +{ + buf[1] = (val >> 8) & 0xff; + buf[0] = val & 0xff; +} + +/* Store a big-endian 32-bit value. */ + +static inline void +simple_object_set_big_32 (unsigned char *buf, unsigned int val) +{ + buf[0] = (val >> 24) & 0xff; + buf[1] = (val >> 16) & 0xff; + buf[2] = (val >> 8) & 0xff; + buf[3] = val & 0xff; +} + +/* Store a little-endian 32-bit value. */ + +static inline void +simple_object_set_little_32 (unsigned char *buf, unsigned int val) +{ + buf[3] = (val >> 24) & 0xff; + buf[2] = (val >> 16) & 0xff; + buf[1] = (val >> 8) & 0xff; + buf[0] = val & 0xff; +} + +/* Store a big-endian 32-bit value coming in as a ulong_type. */ + +static inline void +simple_object_set_big_32_ulong (unsigned char *buf, ulong_type val) +{ + simple_object_set_big_32 (buf, val); +} + +/* Store a little-endian 32-bit value coming in as a ulong_type. */ + +static inline void +simple_object_set_little_32_ulong (unsigned char *buf, ulong_type val) +{ + simple_object_set_little_32 (buf, val); +} + +#ifdef UNSIGNED_64BIT_TYPE + +/* Store a big-endian 64-bit value. */ + +static inline void +simple_object_set_big_64 (unsigned char *buf, ulong_type val) +{ + buf[0] = (val >> 56) & 0xff; + buf[1] = (val >> 48) & 0xff; + buf[2] = (val >> 40) & 0xff; + buf[3] = (val >> 32) & 0xff; + buf[4] = (val >> 24) & 0xff; + buf[5] = (val >> 16) & 0xff; + buf[6] = (val >> 8) & 0xff; + buf[7] = val & 0xff; +} + +/* Store a little-endian 64-bit value. */ + +static inline void +simple_object_set_little_64 (unsigned char *buf, ulong_type val) +{ + buf[7] = (val >> 56) & 0xff; + buf[6] = (val >> 48) & 0xff; + buf[5] = (val >> 40) & 0xff; + buf[4] = (val >> 32) & 0xff; + buf[3] = (val >> 24) & 0xff; + buf[2] = (val >> 16) & 0xff; + buf[1] = (val >> 8) & 0xff; + buf[0] = val & 0xff; +} + +#endif -- cgit v1.2.3