78757d52c8
Specifically tested on MIPS under QEMU (works with all combination of bit-ness and endian-ness) Signed-off-by: Stanislav Galabov <sgalabov@gmail.com>
80 lines
1.0 KiB
ArmAsm
80 lines
1.0 KiB
ArmAsm
/*
|
|
* (C) Copyright 2007 Semihalf
|
|
*
|
|
* Written by: Rafal Jaworowski <raj@semihalf.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#if defined(CONFIG_PPC)
|
|
|
|
.text
|
|
.globl _start
|
|
_start:
|
|
lis %r11, search_hint@ha
|
|
addi %r11, %r11, search_hint@l
|
|
stw %r1, 0(%r11)
|
|
b main
|
|
|
|
|
|
.globl syscall
|
|
syscall:
|
|
lis %r11, syscall_ptr@ha
|
|
addi %r11, %r11, syscall_ptr@l
|
|
lwz %r11, 0(%r11)
|
|
mtctr %r11
|
|
bctr
|
|
|
|
#elif defined(CONFIG_ARM)
|
|
|
|
.text
|
|
.globl _start
|
|
_start:
|
|
ldr ip, =search_hint
|
|
str sp, [ip]
|
|
b main
|
|
|
|
|
|
.globl syscall
|
|
syscall:
|
|
ldr ip, =syscall_ptr
|
|
ldr pc, [ip]
|
|
|
|
#elif defined(CONFIG_MIPS)
|
|
#include <asm/asm.h>
|
|
.text
|
|
.globl __start
|
|
.ent __start
|
|
__start:
|
|
PTR_S $sp, search_hint
|
|
b main
|
|
.end __start
|
|
|
|
.globl syscall
|
|
.ent syscall
|
|
syscall:
|
|
PTR_S $ra, return_addr
|
|
PTR_L $t9, syscall_ptr
|
|
jalr $t9
|
|
nop
|
|
PTR_L $ra, return_addr
|
|
jr $ra
|
|
nop
|
|
.end syscall
|
|
|
|
return_addr:
|
|
.align 8
|
|
.long 0
|
|
#else
|
|
#error No support for this arch!
|
|
#endif
|
|
|
|
.globl syscall_ptr
|
|
syscall_ptr:
|
|
.align 8
|
|
.long 0
|
|
|
|
.globl search_hint
|
|
search_hint:
|
|
.long 0
|