1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * (C) Copyright 2007 Semihalf 4 * 5 * Written by: Rafal Jaworowski <raj (at) semihalf.com> 6 */ 7 8 #if defined(CONFIG_PPC) 9 10 .text 11 .globl _start 12 _start: 13 lis %r11, search_hint@ha 14 addi %r11, %r11, search_hint@l 15 stw %r1, 0(%r11) 16 b main 17 18 19 .globl syscall 20 syscall: 21 lis %r11, syscall_ptr@ha 22 addi %r11, %r11, syscall_ptr@l 23 lwz %r11, 0(%r11) 24 mtctr %r11 25 bctr 26 27 #elif defined(CONFIG_ARM) 28 29 .text 30 .globl _start 31 _start: 32 ldr ip, =search_hint 33 str sp, [ip] 34 b main 35 36 37 .globl syscall 38 syscall: 39 ldr ip, =syscall_ptr 40 ldr pc, [ip] 41 42 #elif defined(CONFIG_MIPS) 43 #include <asm/asm.h> 44 .text 45 .globl __start 46 .ent __start 47 __start: 48 PTR_S $sp, search_hint 49 b main 50 .end __start 51 52 .globl syscall 53 .ent syscall 54 syscall: 55 PTR_S $ra, return_addr 56 PTR_L $t9, syscall_ptr 57 jalr $t9 58 nop 59 PTR_L $ra, return_addr 60 jr $ra 61 nop 62 .end syscall 63 64 return_addr: 65 .align 8 66 .long 0 67 #else 68 #error No support for this arch! 69 #endif 70 71 .globl syscall_ptr 72 syscall_ptr: 73 .align 8 74 .long 0 75 76 .globl search_hint 77 search_hint: 78 .long 0 79
