/* ELF support for BFD.
- Copyright 1991, 1992, 1993, 1994, 1995, 1997, 1998, 2000, 2001, 2002,
- 2003, 2006, 2007, 2008, 2010 Free Software Foundation, Inc.
+ Copyright (C) 1991-2015 Free Software Foundation, Inc.
Written by Fred Fish @ Cygnus Support, from information published
in "UNIX System V Release 4, Programmers Guide: ANSI C and
unsigned long st_name; /* Symbol name, index in string tbl */
unsigned char st_info; /* Type and binding attributes */
unsigned char st_other; /* Visibilty, and target specific */
+ unsigned char st_target_internal; /* Internal-only information */
unsigned int st_shndx; /* Associated section index */
};
/* .tbss is special. It doesn't contribute memory space to normal
segments and it doesn't take file space in normal segments. */
+#define ELF_TBSS_SPECIAL(sec_hdr, segment) \
+ (((sec_hdr)->sh_flags & SHF_TLS) != 0 \
+ && (sec_hdr)->sh_type == SHT_NOBITS \
+ && (segment)->p_type != PT_TLS)
+
#define ELF_SECTION_SIZE(sec_hdr, segment) \
- ((!(((sec_hdr)->sh_flags & SHF_TLS) != 0 \
- && (sec_hdr)->sh_type == SHT_NOBITS) \
- || (segment)->p_type == PT_TLS) ? (sec_hdr)->sh_size : 0)
-
-/* Decide if the given sec_hdr is in the given segment. PT_TLS segment
- contains only SHF_TLS sections. Only PT_LOAD, PT_GNU_RELRO and
- and PT_TLS segments can contain SHF_TLS sections. */
-#define ELF_SECTION_IN_SEGMENT_1(sec_hdr, segment, check_vma) \
- ((((((sec_hdr)->sh_flags & SHF_TLS) != 0) \
+ (ELF_TBSS_SPECIAL(sec_hdr, segment) ? 0 : (sec_hdr)->sh_size)
+
+/* Decide if the section SEC_HDR is in SEGMENT. If CHECK_VMA, then
+ VMAs are checked for alloc sections. If STRICT, then a zero size
+ section won't match at the end of a segment, unless the segment
+ is also zero size. Regardless of STRICT and CHECK_VMA, zero size
+ sections won't match at the start or end of PT_DYNAMIC, unless
+ PT_DYNAMIC is itself zero sized. */
+#define ELF_SECTION_IN_SEGMENT_1(sec_hdr, segment, check_vma, strict) \
+ ((/* Only PT_LOAD, PT_GNU_RELRO and PT_TLS segments can contain \
+ SHF_TLS sections. */ \
+ ((((sec_hdr)->sh_flags & SHF_TLS) != 0) \
&& ((segment)->p_type == PT_TLS \
|| (segment)->p_type == PT_GNU_RELRO \
|| (segment)->p_type == PT_LOAD)) \
+ /* PT_TLS segment contains only SHF_TLS sections, PT_PHDR no \
+ sections at all. */ \
|| (((sec_hdr)->sh_flags & SHF_TLS) == 0 \
&& (segment)->p_type != PT_TLS \
&& (segment)->p_type != PT_PHDR)) \
- /* Any section besides one of type SHT_NOBITS must have a file \
- offset within the segment. */ \
+ /* Any section besides one of type SHT_NOBITS must have file \
+ offsets within the segment. */ \
&& ((sec_hdr)->sh_type == SHT_NOBITS \
|| ((bfd_vma) (sec_hdr)->sh_offset >= (segment)->p_offset \
- && ((sec_hdr)->sh_offset + ELF_SECTION_SIZE(sec_hdr, segment) \
- <= (segment)->p_offset + (segment)->p_filesz))) \
- /* SHF_ALLOC sections must have VMAs within the segment. Be \
- careful about segments right at the end of memory. */ \
+ && (!(strict) \
+ || ((sec_hdr)->sh_offset - (segment)->p_offset \
+ <= (segment)->p_filesz - 1)) \
+ && (((sec_hdr)->sh_offset - (segment)->p_offset \
+ + ELF_SECTION_SIZE(sec_hdr, segment)) \
+ <= (segment)->p_filesz))) \
+ /* SHF_ALLOC sections must have VMAs within the segment. */ \
&& (!(check_vma) \
|| ((sec_hdr)->sh_flags & SHF_ALLOC) == 0 \
|| ((sec_hdr)->sh_addr >= (segment)->p_vaddr \
- && ((sec_hdr)->sh_addr - (segment)->p_vaddr \
- + ELF_SECTION_SIZE(sec_hdr, segment) <= (segment)->p_memsz))))
+ && (!(strict) \
+ || ((sec_hdr)->sh_addr - (segment)->p_vaddr \
+ <= (segment)->p_memsz - 1)) \
+ && (((sec_hdr)->sh_addr - (segment)->p_vaddr \
+ + ELF_SECTION_SIZE(sec_hdr, segment)) \
+ <= (segment)->p_memsz))) \
+ /* No zero size sections at start or end of PT_DYNAMIC. */ \
+ && ((segment)->p_type != PT_DYNAMIC \
+ || (sec_hdr)->sh_size != 0 \
+ || (segment)->p_memsz == 0 \
+ || (((sec_hdr)->sh_type == SHT_NOBITS \
+ || ((bfd_vma) (sec_hdr)->sh_offset > (segment)->p_offset \
+ && ((sec_hdr)->sh_offset - (segment)->p_offset \
+ < (segment)->p_filesz))) \
+ && (((sec_hdr)->sh_flags & SHF_ALLOC) == 0 \
+ || ((sec_hdr)->sh_addr > (segment)->p_vaddr \
+ && ((sec_hdr)->sh_addr - (segment)->p_vaddr \
+ < (segment)->p_memsz))))))
#define ELF_SECTION_IN_SEGMENT(sec_hdr, segment) \
- (ELF_SECTION_IN_SEGMENT_1 (sec_hdr, segment, 1))
+ (ELF_SECTION_IN_SEGMENT_1 (sec_hdr, segment, 1, 0))
+
+#define ELF_SECTION_IN_SEGMENT_STRICT(sec_hdr, segment) \
+ (ELF_SECTION_IN_SEGMENT_1 (sec_hdr, segment, 1, 1))
#endif /* _ELF_INTERNAL_H */
projects / deliverable / binutils-gdb.git / blobdiff