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| author | Jan Beulich <jbeulich@novell.com> | 2017-11-13 12:26:12 +0100 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2017-11-13 12:26:12 +0100 |
| commit | 5be87c8fa74c9ae6684bea571b4157ad1966d008 (patch) | |
| tree | 03ab623efa8dc04c95e82d4c6b05b9eb3ab346c4 /include | |
| parent | b76bc5d54e36f15efd954898d9aa075c2bea02dd (diff) | |
| download | gdb-5be87c8fa74c9ae6684bea571b4157ad1966d008.zip gdb-5be87c8fa74c9ae6684bea571b4157ad1966d008.tar.gz gdb-5be87c8fa74c9ae6684bea571b4157ad1966d008.tar.bz2 | |
PE: don't corrupt section flags when linking from ELF objects
Linking EFI executables from ELF object files can result in corrupted
COFF section flags if the section's alignment is too high. Issue a
diagnostic in that case, erroring out if this is not a final link, and
make sure only in-range values get written to the output image.
While doing this also make tic80 use the generic alignment macros
instead of custom #ifdef-ary.
No testsuite regressions for the range of COFF/PE targets that actually
cross-build in the first place on x86-64-linux.
Diffstat (limited to 'include')
| -rw-r--r-- | include/ChangeLog | 6 | ||||
| -rw-r--r-- | include/coff/pe.h | 5 |
2 files changed, 10 insertions, 1 deletions
diff --git a/include/ChangeLog b/include/ChangeLog index dc320cb..a6e3ebc 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,3 +1,9 @@ +2017-11-13 Jan Beulich <jbeulich@suse.com> + + * coff/pe.h (COFF_ENCODE_ALIGNMENT): Cap value to maximum one + representable. + (COFF_DECODE_ALIGNMENT): Define. + 2017-11-09 Tamar Christina <tamar.christina@arm.com> * opcode/aarch64.h (AARCH64_ARCH_V8_4): Enable DOTPROD. diff --git a/include/coff/pe.h b/include/coff/pe.h index f51ceed..5239916 100644 --- a/include/coff/pe.h +++ b/include/coff/pe.h @@ -104,7 +104,10 @@ /* Encode alignment power into IMAGE_SCN_ALIGN bits of s_flags. */ #define COFF_ENCODE_ALIGNMENT(SECTION, ALIGNMENT_POWER) \ - ((SECTION).s_flags |= IMAGE_SCN_ALIGN_POWER_CONST ((ALIGNMENT_POWER))) + ((SECTION).s_flags |= IMAGE_SCN_ALIGN_POWER_CONST ((ALIGNMENT_POWER) <= 13 \ + ? (ALIGNMENT_POWER) : 13)) +#define COFF_DECODE_ALIGNMENT(X) \ + IMAGE_SCN_ALIGN_POWER_NUM ((X) & IMAGE_SCN_ALIGN_POWER_BIT_MASK) #define IMAGE_SCN_LNK_NRELOC_OVFL 0x01000000 /* Section contains extended relocations. */ #define IMAGE_SCN_MEM_NOT_CACHED 0x04000000 /* Section is not cachable. */ |