mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-27 03:47:43 +00:00
8d29b7b9f8
Replace handcoded rcall instructions with the call pseudo-instruction. For kernels too far over 1MB the rcall instruction can't reach and linking will fail. We already call the final linker with --relax which converts call pseudo-instructions to the right things anyway. This fixes arch/avr32/kernel/built-in.o: In function `syscall_exit_work': (.ex.text+0x198): relocation truncated to fit: R_AVR32_22H_PCREL against symbol `schedule' defined in .sched.text section in kernel/built-in.o arch/avr32/kernel/built-in.o: In function `fault_exit_work': (.ex.text+0x3b6): relocation truncated to fit: R_AVR32_22H_PCREL against symbol `schedule' defined in .sched.text section in kernel/built-in.o But I'm still left with arch/avr32/kernel/built-in.o:(.fixup+0x2): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+45a arch/avr32/kernel/built-in.o:(.fixup+0x8): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+8ea arch/avr32/kernel/built-in.o:(.fixup+0xe): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+abe arch/avr32/kernel/built-in.o:(.fixup+0x14): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+ac8 arch/avr32/kernel/built-in.o:(.fixup+0x1a): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+ad2 arch/avr32/kernel/built-in.o:(.fixup+0x20): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+adc arch/avr32/kernel/built-in.o:(.fixup+0x26): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+ae6 arch/avr32/kernel/built-in.o:(.fixup+0x2c): relocation truncated to fit: R_AVR32_22H_PCREL against `.text'+af0 arch/avr32/kernel/built-in.o:(.fixup+0x32): additional relocation overflows omitted from the output These are caused by a similar problem with 'rjmp' instructions. Unfortunately, there's no easy fix for these at the moment since we don't have a arbitrary-range 'jmp' instruction similar to 'call'. Signed-off-by: Ben Nizette <bn@niasdigital.com> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
68 lines
1.2 KiB
ArmAsm
68 lines
1.2 KiB
ArmAsm
/*
|
|
* Copy to/from userspace with optional address space checking.
|
|
*
|
|
* Copyright 2004-2006 Atmel Corporation
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#include <asm/page.h>
|
|
#include <asm/thread_info.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/asm.h>
|
|
|
|
.text
|
|
.align 1
|
|
.global strnlen_user
|
|
.type strnlen_user, "function"
|
|
strnlen_user:
|
|
branch_if_kernel r8, __strnlen_user
|
|
sub r8, r11, 1
|
|
add r8, r12
|
|
retcs 0
|
|
brmi adjust_length /* do a closer inspection */
|
|
|
|
.global __strnlen_user
|
|
.type __strnlen_user, "function"
|
|
__strnlen_user:
|
|
mov r10, r12
|
|
|
|
10: ld.ub r8, r12++
|
|
cp.w r8, 0
|
|
breq 2f
|
|
sub r11, 1
|
|
brne 10b
|
|
|
|
sub r12, -1
|
|
2: sub r12, r10
|
|
retal r12
|
|
|
|
|
|
.type adjust_length, "function"
|
|
adjust_length:
|
|
cp.w r12, 0 /* addr must always be < TASK_SIZE */
|
|
retmi 0
|
|
|
|
pushm lr
|
|
lddpc lr, _task_size
|
|
sub r11, lr, r12
|
|
mov r9, r11
|
|
call __strnlen_user
|
|
cp.w r12, r9
|
|
brgt 1f
|
|
popm pc
|
|
1: popm pc, r12=0
|
|
|
|
.align 2
|
|
_task_size:
|
|
.long TASK_SIZE
|
|
|
|
.section .fixup, "ax"
|
|
.align 1
|
|
19: retal 0
|
|
|
|
.section __ex_table, "a"
|
|
.align 2
|
|
.long 10b, 19b
|