0 "la*j"Tn\Tţ h0 7 943_I|Mdv &K Index of /FSS-BCZ/root/usr/local/lib64/perl5/5.32/auto/Mock

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+lY>TD  rOF |?_I|+?// SPDX-License-Identifier: GPL-2.0-only /* * recordmcount.c: construct a table of the locations of calls to 'mcount' * so that ftrace can find them quickly. * Copyright 2009 John F. Reiser . All rights reserved. * * Restructured to fit Linux format, as well as other updates: * Copyright 2010 Steven Rostedt , Red Hat Inc. */ /* * Strategy: alter the .o file in-place. * * Append a new STRTAB that has the new section names, followed by a new array * ElfXX_Shdr[] that has the new section headers, followed by the section * contents for __mcount_loc and its relocations. The old shstrtab strings, * and the old ElfXX_Shdr[] array, remain as "garbage" (commonly, a couple * kilobytes.) Subsequent processing by /bin/ld (or the kernel module loader) * will ignore the garbage regions, because they are not designated by the * new .e_shoff nor the new ElfXX_Shdr[]. [In order to remove the garbage, * then use "ld -r" to create a new file that omits the garbage.] */ #include #include #include #include #include #include #include #include #include #include #ifndef EM_AARCH64 #define EM_AARCH64 183 #define R_AARCH64_NONE 0 #define R_AARCH64_ABS64 257 #endif #define R_ARM_PC24 1 #define R_ARM_THM_CALL 10 #define R_ARM_CALL 28 #define R_AARCH64_CALL26 283 static int fd_map; /* File descriptor for file being modified. */ static int mmap_failed; /* Boolean flag. */ static char gpfx; /* prefix for global symbol name (sometimes '_') */ static struct stat sb; /* Remember .st_size, etc. */ static const char *altmcount; /* alternate mcount symbol name */ static int warn_on_notrace_sect; /* warn when section has mcount not being recorded */ static void *file_map; /* pointer of the mapped file */ static void *file_end; /* pointer to the end of the mapped file */ static int file_updated; /* flag to state file was changed */ static void *file_ptr; /* current file pointer location */ static void *file_append; /* added to the end of the file */ static size_t file_append_size; /* how much is added to end of file */ /* Per-file resource cleanup when multiple files. */ static void file_append_cleanup(void) { free(file_append); file_append = NULL; file_append_size = 0; file_updated = 0; } static void mmap_cleanup(void) { if (!mmap_failed) munmap(file_map, sb.st_size); else free(file_map); file_map = NULL; } /* ulseek, uwrite, ...: Check return value for errors. */ static off_t ulseek(off_t const offset, int const whence) { switch (whence) { case SEEK_SET: file_ptr = file_map + offset; break; case SEEK_CUR: file_ptr += offset; break; case SEEK_END: file_ptr = file_map + (sb.st_size - offset); break; } if (file_ptr < file_map) { fprintf(stderr, "lseek: seek before file\n"); return -1; } return file_ptr - file_map; } static