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authorChristophe Lyon <christophe.lyon@st.com>2018-03-20 10:55:37 +0100
committerChristophe Lyon <christophe.lyon@linaro.org>2018-04-25 20:57:39 +0000
commitcb10292c2a6c26349c02ec275e4087147fd1cdf0 (patch)
tree4539fa62ce1191d95c73a1312763514f9e0007ea /bfd/elf32-arm.c
parent5c5a4843ec385a60954fbbc4bcf5b64763639bd3 (diff)
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[ARM] FDPIC: Add stack segment
The size of the stack segment defaults to 32KB, and can be overridden by defining the __stacksize symbol. 2018-04-25 Christophe Lyon <christophe.lyon@st.com> Mickaël Guêné <mickael.guene@st.com> bfd/ * elf32-arm.c (DEFAULT_STACK_SIZE): New. (elf32_arm_always_size_sections): Create stack segment.
Diffstat (limited to 'bfd/elf32-arm.c')
-rw-r--r--bfd/elf32-arm.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/bfd/elf32-arm.c b/bfd/elf32-arm.c
index fb29c0c..35b60ed 100644
--- a/bfd/elf32-arm.c
+++ b/bfd/elf32-arm.c
@@ -2251,6 +2251,9 @@ typedef unsigned short int insn16;
section. */
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
+/* FDPIC default stack size. */
+#define DEFAULT_STACK_SIZE 0x8000
+
static const unsigned long tls_trampoline [] =
{
0xe08e0000, /* add r0, lr, r0 */
@@ -16485,6 +16488,7 @@ maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
/* Not an error, just cut short the traversal. */
return FALSE;
}
+
return TRUE;
}
@@ -16955,6 +16959,9 @@ elf32_arm_always_size_sections (bfd *output_bfd,
struct bfd_link_info *info)
{
asection *tls_sec;
+ struct elf32_arm_link_hash_table *htab;
+
+ htab = elf32_arm_hash_table (info);
if (bfd_link_relocatable (info))
return TRUE;
@@ -16987,6 +16994,12 @@ elf32_arm_always_size_sections (bfd *output_bfd,
(*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
}
}
+
+ if (htab->fdpic_p && !bfd_link_relocatable (info)
+ && !bfd_elf_stack_segment_size (output_bfd, info,
+ "__stacksize", DEFAULT_STACK_SIZE))
+ return FALSE;
+
return TRUE;
}