diff options
Diffstat (limited to 'bfd/peicode.h')
| -rw-r--r-- | bfd/peicode.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/bfd/peicode.h b/bfd/peicode.h index 06bcaa9..668e742 100644 --- a/bfd/peicode.h +++ b/bfd/peicode.h @@ -631,6 +631,20 @@ pe_ILF_make_a_section (pe_ILF_vars * vars, if (size & 1) vars->data --; +# if (GCC_VERSION >= 3000) + /* PR 18758: See note in pe_ILF_buid_a_bfd. We must make sure that we + preserve host alignment requirements. We test 'size' rather than + vars.data as we cannot perform binary arithmetic on pointers. We assume + that vars.data was sufficiently aligned upon entry to this function. + The BFD_ASSERTs in this functions will warn us if we run out of room, + but we should already have enough padding built in to ILF_DATA_SIZE. */ + { + unsigned int alignment = __alignof__ (struct coff_section_tdata); + + if (size & (alignment - 1)) + vars->data += alignment - (size & (alignment - 1)); + } +#endif /* Create a coff_section_tdata structure for our use. */ sec->used_by_bfd = (struct coff_section_tdata *) vars->data; vars->data += sizeof (struct coff_section_tdata); @@ -836,6 +850,24 @@ pe_ILF_build_a_bfd (bfd * abfd, /* The remaining space in bim->buffer is used by the pe_ILF_make_a_section() function. */ +# if (GCC_VERSION >= 3000) + /* PR 18758: Make sure that the data area is sufficiently aligned for + pointers on the host. __alignof__ is a gcc extension, hence the test + above. For other compilers we will have to assume that the alignment is + unimportant, or else extra code can be added here and in + pe_ILF_make_a_section. + + Note - we cannot test 'ptr' directly as it is illegal to perform binary + arithmetic on pointers, but we know that the strings section is the only + one that might end on an unaligned boundary. */ + { + unsigned int alignment = __alignof__ (char *); + + if (SIZEOF_ILF_STRINGS & (alignment - 1)) + ptr += alignment - (SIZEOF_ILF_STRINGS & (alignment - 1)); + } +#endif + vars.data = ptr; vars.abfd = abfd; vars.sec_index = 0; |