smallsolar/u-boot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fix board init code to respect the C runtime environment

Browse Source 
board_init_f_mem() alters the C runtime environment's
stack it is actually already using. This is not a valid
behaviour within a C runtime environment.

Split board_init_f_mem into C functions which do not alter
their own stack and always behave properly with respect to
their C runtime environment.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Acked-by: Thomas Chou <thomas@wytron.com.tw>
This commit is contained in:
Albert ARIBAUD
2015-11-25 17:56:32 +01:00
committed by Tom Rini
parent 20d08f59fa
commit ecc306639e
10 changed files with 146 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
arch/nios2/cpu/start.S
View File

@@ -106,14 +106,18 @@ _reloc:
stw r0, 4(sp)
mov fp, sp
/* Allocate and zero GD, update SP */
/* Allocate and initialize reserved area, update SP */
mov r4, sp
movhi r2, %hi(board_init_f_mem@h)
ori r2, r2, %lo(board_init_f_mem@h)
movhi r2, %hi(board_init_f_alloc_reserve@h)
ori r2, r2, %lo(board_init_f_alloc_reserve@h)
callr r2
mov sp, r2
mov r4, sp
movhi r2, %hi(board_init_f_init_reserve@h)
ori r2, r2, %lo(board_init_f_init_reserve@h)
callr r2
/* Update stack- and frame-pointers */
mov sp, r2
/* Update frame-pointer */
mov fp, sp
/* Call board_init_f -- never returns */