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hekate/bootloader/reloc.S
2018-08-13 11:58:24 +03:00

34 lines
1 KiB
ArmAsm

/*
* Copyright (c) 2018 naehrwert
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* TODO: the placement of the relocator is a bit fragile atm, maybe we
* should include it in start.S and copy it to some known good
* place in IRAM instead. Basically we want it as far back atm
* as it might be overwritten during relocation.
*/
.section .text.reloc
.arm
.globl _reloc_ipl
.type _reloc_ipl, %function
_reloc_ipl:
LDMIA R0!, {R4-R7}
STMIA R1!, {R4-R7}
SUBS R2, #0x10
BNE _reloc_ipl
BX R3