ExternalVendorCode/genode
1
0
Fork 0
mirror of https://github.com/genodelabs/genode.git synced 2025-04-07 03:17:44 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

base-hw: Fully define _crt0_start_stack value on arm_64

Browse Source 
The _crt0_start_stack label points to a memory location containing the
size of the bootstrap stack. On AArch64 this should be an 8 byte value,
but the code only only defines half of those using asm .long statement.
The other half is expected to be 0, which is true when using GNU as.
This is not the case when using clang's integrated as however. Since
_crt0_stack_size is defined inside .text section clang uses 0xd503201f
value (aarch64 nop instruction) to fill the extra 4 bytes.

Fix this minor incompatibility by explicitly defining both halfs of
this 8 byte quantity.

Fixes #3987
This commit is contained in:
Piotr Tworek 2020-11-16 22:57:22 +01:00 committed by Norman Feske
parent 384cf14bee
commit 8f6b934caa
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
repos/base-hw/src/bootstrap/spec/arm_64/crt0.s
View File

@ -92,4 +92,4 @@
.space STACK_SIZE
.endr
_crt0_start_stack:
.long STACK_SIZE
.quad STACK_SIZE