espressif/binutils-gdb
1
0
Fork 0
mirror of https://github.com/espressif/binutils-gdb.git synced 2025-10-12 18:36:10 +08:00
Code Issues Packages Projects Releases Wiki Activity

* ldexp.h (exp_data_seg): Add min_base and maxpagesize fields.

Browse Source 
* ldexp.c (fold_binary) <case DATA_SEGMENT_ALIGN>: Initialize them.
	* ldlang.c (lang_size_sections): Use them to avoid wasting virtual
	address space at DATA_SEGMENT_ALIGN.  Fix computation of expected
	PT_GNU_RELRO segment end.
This commit is contained in:
Jakub Jelinek
2004-12-17 15:50:02 +00:00
parent 9d2be1eec8
commit e3070fef41
4 changed files with 21 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
ld/ldlang.c
View File

@ -3858,15 +3858,21 @@ lang_size_sections
{
/* If DATA_SEGMENT_ALIGN DATA_SEGMENT_RELRO_END pair was seen, try
to put exp_data_seg.relro on a (common) page boundary. */
bfd_vma old_base, relro_end;
bfd_vma old_min_base, relro_end, maxpage;
exp_data_seg.phase = exp_dataseg_relro_adjust;
old_base = exp_data_seg.base;
old_min_base = exp_data_seg.min_base;
maxpage = exp_data_seg.maxpagesize;
exp_data_seg.base += (-exp_data_seg.relro_end
& (exp_data_seg.pagesize - 1));
/* Compute the expected PT_GNU_RELRO segment end. */
relro_end = (exp_data_seg.relro_end + exp_data_seg.pagesize - 1)
& (exp_data_seg.pagesize - 1);
& ~(exp_data_seg.pagesize - 1);
if (old_min_base + maxpage < exp_data_seg.base)
{
exp_data_seg.base -= maxpage;
relro_end -= maxpage;
}
result = lang_size_sections_1 (s, output_section_statement, prev, fill,
dot, relax, check_regions);
if (exp_data_seg.relro_end > relro_end)
@ -3888,7 +3894,7 @@ lang_size_sections
if (((bfd_vma) 1 << max_alignment_power) < exp_data_seg.pagesize)
{
if (exp_data_seg.base - (1 << max_alignment_power)
< old_base)
< old_min_base)
exp_data_seg.base += exp_data_seg.pagesize;
exp_data_seg.base -= (1 << max_alignment_power);
result = lang_size_sections_1 (s, output_section_statement,