crt0.S
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/*
* (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