upstream/opnsense-src
1
0
Fork 0
mirror of https://github.com/opnsense/src.git synced 2026-04-21 22:27:47 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Remove the compat code to handle the kernel passing us an unalinged

Browse source 
stackpointer. Userland expects the kernel to pass it an aligned sp and
pass a pointer to the arguments in x0. The kernel side was updated in
r289502, 3 months ago.

Sponsored by:	ABT Systems Ltd
This commit is contained in:
Andrew Turner 2016-01-13 15:54:17 +00:00
parent 88b85228a4
commit fafb1ee7bd
2 changed files with 2 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
lib/csu/aarch64/crt1.c
View file

@ -54,11 +54,7 @@ __asm(" .text \n"
" .align 0 \n"
" .globl _start \n"
" _start: \n"
/* TODO: Remove this when the kernel correctly aligns the stack */
" cbnz x0, 1f \n" /* Are we using a new kernel? */
" mov x0, sp \n" /* No, load the args from sp */
" and sp, x0, #~0xf \n" /* And align the stack */
"1: mov x3, x2 \n" /* cleanup */
" mov x3, x2 \n" /* cleanup */
" add x1, x0, #8 \n" /* load argv */
" ldr x0, [x0] \n" /* load argc */
" add x2, x1, x0, lsl #3 \n" /* env is after argv */

8
libexec/rtld-elf/aarch64/rtld_start.S
View file

@ -34,13 +34,7 @@ ENTRY(.rtld_start)
mov x19, x0 /* Put ps_strings in a callee-saved register */
mov x20, sp /* And the stack pointer */
/* Handle the old style stack */
/* TODO: Remove this when the kernel correctly aligns the stack */
cbnz x0, 1f
mov x0, sp /* sp points to the args */
and sp, x0, #~0xf /* Align the stack as needed */
1: sub sp, sp, #16 /* Make room for obj_main & exit proc */
sub sp, sp, #16 /* Make room for obj_main & exit proc */
mov x1, sp /* exit_proc */
add x2, x1, #8 /* obj_main */