diff options
Diffstat (limited to 'bfd/peXXigen.c')
| -rw-r--r-- | bfd/peXXigen.c | 68 |
1 files changed, 52 insertions, 16 deletions
diff --git a/bfd/peXXigen.c b/bfd/peXXigen.c index f3b3a96d760..2fe294fe1bf 100644 --- a/bfd/peXXigen.c +++ b/bfd/peXXigen.c @@ -645,7 +645,7 @@ _bfd_XXi_swap_aouthdr_out (abfd, in, out) 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 @@ -943,23 +943,59 @@ _bfd_XXi_swap_scnhdr_out (abfd, in, out) 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... */ - { + /* 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; int flags = scnhdr_int->s_flags; + for (p = known_sections; p->section_name; p++) + if (strcmp (scnhdr_int->s_name, p->section_name) == 0) + { + /* 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. */ + flags &= ~IMAGE_SCN_MEM_WRITE; + flags |= p->must_have; + break; + } + H_PUT_32 (abfd, flags, scnhdr_ext->s_flags); } @@ -969,7 +1005,7 @@ _bfd_XXi_swap_scnhdr_out (abfd, in, out) && 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 |