/* Support for the generic parts of PE/PEI; the common executable parts.
- Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
+ Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
Free Software Foundation, Inc.
Written by Cygnus Solutions.
sec->lineno_count = 0;
sec->userdata = NULL;
sec->next = (asection *) NULL;
- sec->flags = 0;
sec->alignment_power = 2;
sec->flags = SEC_HAS_CONTENTS | SEC_ALLOC | SEC_DATA | SEC_LOAD;
if (extra->DataDirectory[1].VirtualAddress == 0)
/* Until other .idata fixes are made (pending patch), the entry for
- .idata is needed for backwards compatability. FIXME. */
+ .idata is needed for backwards compatibility. FIXME. */
add_data_entry (abfd, extra, 1, ".idata", ib);
/* For some reason, the virtual size (which is what's set by
{
asection *sec;
+ bfd_vma hsize = 0;
bfd_vma dsize = 0;
- bfd_vma isize = SA(abfd->sections->filepos);
+ bfd_vma isize = 0;
bfd_vma tsize = 0;
for (sec = abfd->sections; sec; sec = sec->next)
{
int rounded = FA(sec->_raw_size);
+ /* The first non-zero section filepos is the header size.
+ Sections without contents will have a filepos of 0. */
+ if (hsize == 0)
+ hsize = sec->filepos;
if (sec->flags & SEC_DATA)
dsize += rounded;
if (sec->flags & SEC_CODE)
aouthdr_in->dsize = dsize;
aouthdr_in->tsize = tsize;
- extra->SizeOfImage = isize;
+ extra->SizeOfHeaders = hsize;
+ extra->SizeOfImage = SA(hsize) + isize;
}
- extra->SizeOfHeaders = abfd->sections->filepos;
H_PUT_16 (abfd, aouthdr_in->magic, aouthdr_out->standard.magic);
#define LINKER_VERSION 256 /* That is, 2.56 */
PUT_SCNHDR_LNNOPTR (abfd, scnhdr_int->s_lnnoptr,
scnhdr_ext->s_lnnoptr);
- /* Extra flags must be set when dealing with NT. All sections should also
- have the IMAGE_SCN_MEM_READ (0x40000000) flag set. In addition, the
- .text section must have IMAGE_SCN_MEM_EXECUTE (0x20000000) and the data
- sections (.idata, .data, .bss, .CRT) must have IMAGE_SCN_MEM_WRITE set
- (this is especially important when dealing with the .idata section since
- the addresses for routines from .dlls must be overwritten). If .reloc
- section data is ever generated, we must add IMAGE_SCN_MEM_DISCARDABLE
- (0x02000000). Also, the resource data should also be read and
- writable. */
-
- /* FIXME: alignment is also encoded in this field, at least on ppc (krk) */
- /* FIXME: even worse, I don't see how to get the original alignment field*/
- /* back... */
-
{
- int flags = scnhdr_int->s_flags;
+ /* Extra flags must be set when dealing with PE. All sections should also
+ have the IMAGE_SCN_MEM_READ (0x40000000) flag set. In addition, the
+ .text section must have IMAGE_SCN_MEM_EXECUTE (0x20000000) and the data
+ sections (.idata, .data, .bss, .CRT) must have IMAGE_SCN_MEM_WRITE set
+ (this is especially important when dealing with the .idata section since
+ the addresses for routines from .dlls must be overwritten). If .reloc
+ section data is ever generated, we must add IMAGE_SCN_MEM_DISCARDABLE
+ (0x02000000). Also, the resource data should also be read and
+ writable. */
+
+ /* FIXME: Alignment is also encoded in this field, at least on PPC and
+ ARM-WINCE. Although - how do we get the original alignment field
+ back ? */
+
+ typedef struct
+ {
+ const char * section_name;
+ unsigned long must_have;
+ }
+ pe_required_section_flags;
+
+ pe_required_section_flags known_sections [] =
+ {
+ { ".arch", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_DISCARDABLE | IMAGE_SCN_ALIGN_8BYTES },
+ { ".bss", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_UNINITIALIZED_DATA | IMAGE_SCN_MEM_WRITE },
+ { ".data", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_WRITE },
+ { ".edata", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA },
+ { ".idata", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_WRITE },
+ { ".pdata", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA },
+ { ".rdata", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA },
+ { ".reloc", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_DISCARDABLE },
+ { ".rsrc", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_WRITE },
+ { ".text" , IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_CODE | IMAGE_SCN_MEM_EXECUTE },
+ { ".tls", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_WRITE },
+ { ".xdata", IMAGE_SCN_MEM_READ | IMAGE_SCN_CNT_INITIALIZED_DATA },
+ { NULL, 0}
+ };
+
+ pe_required_section_flags * p;
+
+ /* We have defaulted to adding the IMAGE_SCN_MEM_WRITE flag, but now
+ we know exactly what this specific section wants so we remove it
+ and then allow the must_have field to add it back in if necessary.
+ However, we don't remove IMAGE_SCN_MEM_WRITE flag from .text if the
+ default WP_TEXT file flag has been cleared. WP_TEXT may be cleared
+ by ld --enable-auto-import (if auto-import is actually needed),
+ by ld --omagic, or by obcopy --writable-text. */
+
+ for (p = known_sections; p->section_name; p++)
+ if (strcmp (scnhdr_int->s_name, p->section_name) == 0)
+ {
+ if (strcmp (scnhdr_int->s_name, ".text")
+ || (bfd_get_file_flags (abfd) & WP_TEXT))
+ scnhdr_int->s_flags &= ~IMAGE_SCN_MEM_WRITE;
+ scnhdr_int->s_flags |= p->must_have;
+ break;
+ }
- H_PUT_32 (abfd, flags, scnhdr_ext->s_flags);
+ H_PUT_32 (abfd, scnhdr_int->s_flags, scnhdr_ext->s_flags);
}
if (coff_data (abfd)->link_info
&& strcmp (scnhdr_int->s_name, ".text") == 0)
{
/* By inference from looking at MS output, the 32 bit field
- which is the combintion of the number_of_relocs and
+ which is the combination of the number_of_relocs and
number_of_linenos is used for the line number count in
executables. A 16-bit field won't do for cc1. The MS
document says that the number of relocs is zero for
fprintf (file, _("\nCharacteristics 0x%x\n"), pe->real_flags);
#undef PF
#define PF(x, y) if (pe->real_flags & x) { fprintf (file, "\t%s\n", y); }
- PF (F_RELFLG, "relocations stripped");
- PF (F_EXEC, "executable");
- PF (F_LNNO, "line numbers stripped");
- PF (F_LSYMS, "symbols stripped");
- PF (0x80, "little endian");
- PF (F_AR32WR, "32 bit words");
- PF (0x200, "debugging information removed");
- PF (0x1000, "system file");
- PF (F_DLL, "DLL");
- PF (0x8000, "big endian");
+ PF (IMAGE_FILE_RELOCS_STRIPPED, "relocations stripped");
+ PF (IMAGE_FILE_EXECUTABLE_IMAGE, "executable");
+ PF (IMAGE_FILE_LINE_NUMS_STRIPPED, "line numbers stripped");
+ PF (IMAGE_FILE_LOCAL_SYMS_STRIPPED, "symbols stripped");
+ PF (IMAGE_FILE_LARGE_ADDRESS_AWARE, "large address aware");
+ PF (IMAGE_FILE_BYTES_REVERSED_LO, "little endian");
+ PF (IMAGE_FILE_32BIT_MACHINE, "32 bit words");
+ PF (IMAGE_FILE_DEBUG_STRIPPED, "debugging information removed");
+ PF (IMAGE_FILE_SYSTEM, "system file");
+ PF (IMAGE_FILE_DLL, "DLL");
+ PF (IMAGE_FILE_BYTES_REVERSED_HI, "big endian");
#undef PF
/* ctime implies '\n'. */
projects / deliverable / binutils-gdb.git / blobdiff