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(unexec): Handle .plt section in BSS segment.

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This commit is contained in:
Andreas Schwab 2005-11-01 21:32:27 +00:00
parent cf7ec6c373
commit 825dad898e
1 changed files with 23 additions and 4 deletions
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27
src/unexelf.c
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@ -682,7 +682,7 @@ unexec (new_name, old_name, data_start, bss_start, entry_address)
ElfW(Addr) new_data2_addr;
int n, nn;
int old_bss_index, old_sbss_index;
int old_bss_index, old_sbss_index, old_plt_index;
int old_data_index, new_data2_index;
int old_mdebug_index;
struct stat stat_buf;
@ -740,15 +740,34 @@ unexec (new_name, old_name, data_start, bss_start, entry_address)
old_sbss_index = find_section (".sbss", old_section_names,
old_name, old_file_h, old_section_h, 1);
if (old_sbss_index != -1)
if (OLD_SECTION_H (old_sbss_index).sh_type == SHT_PROGBITS)
if (OLD_SECTION_H (old_sbss_index).sh_type != SHT_NOBITS)
old_sbss_index = -1;
if (old_sbss_index == -1)
/* PowerPC64 has .plt in the BSS section. */
old_plt_index = find_section (".plt", old_section_names,
old_name, old_file_h, old_section_h, 1);
if (old_plt_index != -1)
if (OLD_SECTION_H (old_plt_index).sh_type != SHT_NOBITS)
old_plt_index = -1;
if (old_sbss_index == -1 && old_plt_index == -1)
{
old_bss_addr = OLD_SECTION_H (old_bss_index).sh_addr;
old_bss_size = OLD_SECTION_H (old_bss_index).sh_size;
new_data2_index = old_bss_index;
}
else if (old_plt_index != -1
&& (old_sbss_index == -1
|| (OLD_SECTION_H (old_sbss_index).sh_addr
> OLD_SECTION_H (old_plt_index).sh_addr)))
{
old_bss_addr = OLD_SECTION_H (old_plt_index).sh_addr;
old_bss_size = OLD_SECTION_H (old_bss_index).sh_size
+ OLD_SECTION_H (old_plt_index).sh_size;
if (old_sbss_index != -1)
old_bss_size += OLD_SECTION_H (old_sbss_index).sh_size;
new_data2_index = old_plt_index;
}
else
{
old_bss_addr = OLD_SECTION_H (old_sbss_index).sh_addr;
@ -934,7 +953,7 @@ unexec (new_name, old_name, data_start, bss_start, entry_address)
if (n == old_bss_index
/* The new bss and sbss section's size is zero, and its file offset
and virtual address should be off by NEW_DATA2_SIZE. */
|| n == old_sbss_index
|| n == old_sbss_index || n == old_plt_index
)
{
/* NN should be `old_s?bss_index + 1' at this point. */