| /* Declarations for common convenience functions. |
| Copyright (C) 2006-2011 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 LIB_SYSTEM_H |
| #define LIB_SYSTEM_H 1 |
| |
| #include <argp.h> |
| #include <stddef.h> |
| #include <stdint.h> |
| #include <endian.h> |
| #include <byteswap.h> |
| #include <unistd.h> |
| |
| #if __BYTE_ORDER == __LITTLE_ENDIAN |
| # define LE32(n) (n) |
| # define LE64(n) (n) |
| # define BE32(n) bswap_32 (n) |
| # define BE64(n) bswap_64 (n) |
| #elif __BYTE_ORDER == __BIG_ENDIAN |
| # define BE32(n) (n) |
| # define BE64(n) (n) |
| # define LE32(n) bswap_32 (n) |
| # define LE64(n) bswap_64 (n) |
| #else |
| # error "Unknown byte order" |
| #endif |
| |
| extern void *xmalloc (size_t) __attribute__ ((__malloc__)); |
| extern void *xcalloc (size_t, size_t) __attribute__ ((__malloc__)); |
| extern void *xrealloc (void *, size_t) __attribute__ ((__malloc__)); |
| |
| extern char *xstrdup (const char *) __attribute__ ((__malloc__)); |
| extern char *xstrndup (const char *, size_t) __attribute__ ((__malloc__)); |
| |
| |
| extern uint32_t crc32 (uint32_t crc, unsigned char *buf, size_t len); |
| extern int crc32_file (int fd, uint32_t *resp); |
| |
| /* A special gettext function we use if the strings are too short. */ |
| #define sgettext(Str) \ |
| ({ const char *__res = strrchr (gettext (Str), '|'); \ |
| __res ? __res + 1 : Str; }) |
| |
| #define gettext_noop(Str) Str |
| |
| |
| static inline ssize_t __attribute__ ((unused)) |
| pwrite_retry (int fd, const void *buf, size_t len, off_t off) |
| { |
| ssize_t recvd = 0; |
| |
| do |
| { |
| ssize_t ret = TEMP_FAILURE_RETRY (pwrite (fd, buf + recvd, len - recvd, |
| off + recvd)); |
| if (ret <= 0) |
| return ret < 0 ? ret : recvd; |
| |
| recvd += ret; |
| } |
| while ((size_t) recvd < len); |
| |
| return recvd; |
| } |
| |
| static inline ssize_t __attribute__ ((unused)) |
| write_retry (int fd, const void *buf, size_t len) |
| { |
| ssize_t recvd = 0; |
| |
| do |
| { |
| ssize_t ret = TEMP_FAILURE_RETRY (write (fd, buf + recvd, len - recvd)); |
| if (ret <= 0) |
| return ret < 0 ? ret : recvd; |
| |
| recvd += ret; |
| } |
| while ((size_t) recvd < len); |
| |
| return recvd; |
| } |
| |
| static inline ssize_t __attribute__ ((unused)) |
| pread_retry (int fd, void *buf, size_t len, off_t off) |
| { |
| ssize_t recvd = 0; |
| |
| do |
| { |
| ssize_t ret = TEMP_FAILURE_RETRY (pread (fd, buf + recvd, len - recvd, |
| off + recvd)); |
| if (ret <= 0) |
| return ret < 0 ? ret : recvd; |
| |
| recvd += ret; |
| } |
| while ((size_t) recvd < len); |
| |
| return recvd; |
| } |
| |
| |
| /* We need define two variables, argp_program_version_hook and |
| argp_program_bug_address, in all programs. argp.h declares these |
| variables as non-const (which is correct in general). But we can |
| do better, it is not going to change. So we want to move them into |
| the .rodata section. Define macros to do the trick. */ |
| #define ARGP_PROGRAM_VERSION_HOOK_DEF \ |
| void (*const apvh) (FILE *, struct argp_state *) \ |
| __asm ("argp_program_version_hook") |
| #define ARGP_PROGRAM_BUG_ADDRESS_DEF \ |
| const char *const apba__ __asm ("argp_program_bug_address") |
| |
| |
| /* The demangler from libstdc++. */ |
| extern char *__cxa_demangle (const char *mangled_name, char *output_buffer, |
| size_t *length, int *status); |
| |
| |
| |
| /* Color handling. */ |
| |
| /* Command line parser. */ |
| extern const struct argp color_argp; |
| |
| /* Coloring mode. */ |
| enum color_enum |
| { |
| color_never = 0, |
| color_always, |
| color_auto |
| } __attribute__ ((packed)); |
| extern enum color_enum color_mode; |
| |
| /* Colors to use for the various components. */ |
| extern char *color_address; |
| extern char *color_bytes; |
| extern char *color_mnemonic; |
| extern char *color_operand1; |
| extern char *color_operand2; |
| extern char *color_operand3; |
| extern char *color_label; |
| extern char *color_undef; |
| extern char *color_undef_tls; |
| extern char *color_undef_weak; |
| extern char *color_symbol; |
| extern char *color_tls; |
| extern char *color_weak; |
| |
| extern const char color_off[]; |
| |
| /* A static assertion. This will cause a compile-time error if EXPR, |
| which must be a compile-time constant, is false. */ |
| |
| #define eu_static_assert(expr) \ |
| extern int never_defined_just_used_for_checking[(expr) ? 1 : -1] \ |
| __attribute__ ((unused)) |
| |
| #endif /* system.h */ |