我正在尝试根据说明构建 uClinux 。我有一个我不明白的构建问题。
/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel/entry.S: Assembler messages:
/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel/entry.S:138: Error: expecting control register
/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel/entry.S:138: Error: unknown register r5
/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel/entry.S:546: Error: expecting control register
/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel/entry.S:546: Error: unknown register r6
我该怎么办？文件entry.S
/*
* linux/arch/nios2/kernel/entry.S
*
* Copyright (C) 2009, Wind River Systems Inc
* Implemented by fredrik.markstrom@gmail.com and ivarholmqvist@gmail.com
*
* Based on:
*
* linux/arch/nios2/kernel/entry.S
*
* Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com)
* Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>,
* Kenneth Albanowski <kjahds@kjahds.com>,
* Copyright (C) 2000 Lineo Inc. (www.lineo.com)
* Copyright (C) 2004 Microtronix Datacom Ltd.
*
* Based on:
*
* linux/arch/m68knommu/kernel/entry.S
*
* Copyright (C) 1991, 1992 Linus Torvalds
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file README.legal in the main directory of this archive
* for more details.
*
* Linux/m68k support by Hamish Macdonald
*
* 68060 fixes by Jesper Skov
* ColdFire support by Greg Ungerer (gerg@snapgear.com)
* 5307 fixes by David W. Miller
* linux 2.4 support David McCullough <davidm@snapgear.com>
*/
#include <linux/sys.h>
#include <linux/linkage.h>
#include <asm/asm-offsets.h>
#include <asm/asm-macros.h>
#include <asm/thread_info.h>
#include <asm/errno.h>
#include <asm/setup.h>
#include <asm/entry.h>
#include <asm/unistd.h>
#include <asm/processor.h>
.macro GET_THREAD_INFO reg
.if THREAD_SIZE & 0xffff0000
andhi \reg, sp, %hi(~(THREAD_SIZE-1))
.else
addi \reg, r0, %lo(~(THREAD_SIZE-1))
and \reg, \reg, sp
.endif
.endm
/* FIXME: Lots of these exceptions need to be handled */
.section .rodata
.align 4
exception_table:
.word unhandled_exception /* 0 - Reset */
.word unhandled_exception /* 1 - Processor-only Reset */
.word external_interrupt /* 2 - Interrupt */
.word handle_trap /* 3 - Trap Instruction */
.word instruction_trap /* 4 - Unimplemented instruction */
.word handle_illegal /* 5 - Illegal instruction */
.word handle_unaligned /* 6 - Misaligned data access */
.word handle_unaligned /* 7 - Misaligned destination address */
.word handle_diverror /* 8 - Division error */
.word protection_exception_ba /* 9 - Supervisor-only instr. address */
.word protection_exception_instr /* 10 - Supervisor only instruction */
.word protection_exception_ba /* 11 - Supervisor only data address */
.word unhandled_exception /* 12 - Double TLB miss (data) */
.word protection_exception_pte /* 13 - TLB permission violation (x) */
.word protection_exception_pte /* 14 - TLB permission violation (r) */
.word protection_exception_pte /* 15 - TLB permission violation (w) */
.word unhandled_exception /* 16 - MPU region violation */
trap_table:
.word handle_system_call // 0
.word instruction_trap // 1
.word instruction_trap // 2
.word instruction_trap // 3
.word instruction_trap // 4
.word instruction_trap // 5
.word instruction_trap // 6
.word instruction_trap // 7
.word instruction_trap // 8
.word instruction_trap // 9
.word instruction_trap // 10
.word instruction_trap // 11
.word instruction_trap // 12
.word instruction_trap // 13
.word instruction_trap // 14
.word instruction_trap // 15
.word instruction_trap // 16
.word instruction_trap // 17
.word instruction_trap // 18
.word instruction_trap // 19
.word instruction_trap // 20
.word instruction_trap // 21
.word instruction_trap // 22
.word instruction_trap // 23
.word instruction_trap // 24
.word instruction_trap // 25
.word instruction_trap // 26
.word instruction_trap // 27
.word instruction_trap // 28
.word instruction_trap // 29
#ifdef CONFIG_KGDB
.word handle_kgdb_breakpoint /* 30 KGDB breakpoint */
#else
.word instruction_trap // 30
#endif
.word handle_breakpoint // 31
.text
.set noat
.set nobreak
ENTRY(inthandler)
SAVE_ALL
/* Clear EH bit before we get a new excpetion in the kernel
* and after we have saved it to the exception frame. This is done
* wheter it's trap, tlb-miss or interrupt. If we don't do this
* estatus is not updated the next exception.
*/
rdctl r24,status
movi r9,-5
and r24,r24,r9
wrctl status,r24
/* Read cause and vector and branch to the associated handler (
*/
mov r4,sp
rdctl r5,exception
movia r9,exception_table
add r24,r9,r5
ldw r24,0(r24)
jmp r24
/***********************************************************************
* Handle traps
***********************************************************************
*/
ENTRY(handle_trap)
ldw r24,-4(ea) // instruction that caused the exception
srli r24,r24,4
andi r24,r24,0x7c
movia r9,trap_table
add r24,r24,r9
ldw r24,0(r24)
jmp r24
/***********************************************************************
* Handle system calls
***********************************************************************
*/
ENTRY(handle_system_call)
/* Enable interrupts
*/
rdctl r10,status
ori r10,r10,0x0001
wrctl status,r10
/* Reload registers destroyed by common code.
*/
ldw r4,PT_R4(sp)
ldw r5,PT_R5(sp)
/* Check that the requested system call is within limits
*/
movui r1,NR_syscalls
bgeu r2,r1,ret_invsyscall
slli r1,r2,2
movhi r11,%hiadj(sys_call_table)
add r1,r1,r11
ldw r1,%lo(sys_call_table)(r1)
beq r1,r0,ret_invsyscall
/* Get thread info pointer
*/
movi r11,%lo(0xfffff000)
and r11,sp,r11
ldw r11,TI_FLAGS(r11)
/* If someone is ptrace:ing us, take the long way.
*/
BTBNZ r11,r11,TIF_SYSCALL_TRACE,traced_system_call
#if 0
SAVE_SWITCH_STACK
mov r9,r8
mov r8,r7
mov r6,r5
mov r5,r4
mov r4,r2
call print_syscall
RESTORE_SWITCH_STACK
ldw r2,PT_R2(sp)
ldw r4,PT_R4(sp)
ldw r5,PT_R5(sp)
ldw r6,PT_R6(sp)
ldw r7,PT_R7(sp)
ldw r8,PT_R8(sp)
ldw r9,PT_R9(sp)
#endif
/* Execute the system call
*/
callr r1
/* If the syscall returns a negative result:
* Set r7 to 1 to indicate error,
* Negate r2 to get a positive error code
* If the syscall returns zero or a positive value:
* Set r7 to 0.
* The sigreturn system calls will skip the code below by
* adding to register ra. To avoid destroying registers
*
* FIXME: We probably need an orig_r7
*/
translate_rc_and_ret:
movi r1,0
bge r2,zero,3f
sub r2,zero,r2
movi r1,1
3:
stw r2,PT_R2(sp)
stw r1,PT_R7(sp)
end_translate_rc_and_ret:
#if 0
SAVE_SWITCH_STACK
mov r4,r2
mov r5,r1
call print_syscall_ret
RESTORE_SWITCH_STACK
#endif
ret_from_exception:
ldw r1,PT_ESTATUS(sp)
TSTBNZ r1,r1,ESTATUS_EU,Luser_return /* if so, skip resched, signals */
restore_all:
rdctl r10,status /* disable intrs */
andi r10,r10,0xfffe
wrctl status, r10
RESTORE_ALL
eret
/* If the syscall number was invalid return ENOSYS
*/
ret_invsyscall:
movi r2,-ENOSYS
br translate_rc_and_ret
/* This implements the same as above, except it calls
* syscall_trace before and after the syscall in order
* for utilities like strace and gdb to work.
*/
traced_system_call:
SAVE_SWITCH_STACK
call syscall_trace
RESTORE_SWITCH_STACK
/* r2 and r7-r9 might be destroyed by syscall_trace and we need to restore
* them before calling our syscall.
*/
ldw r2,PT_R2(sp)
ldw r4,PT_R4(sp)
ldw r5,PT_R5(sp)
ldw r6,PT_R6(sp)
ldw r7,PT_R7(sp)
ldw r8,PT_R8(sp)
ldw r9,PT_R9(sp)
/* Fetch the syscall function, we don't need to check the boundaries
* since this is already done.
*/
slli r1,r2,2
movhi r11,%hiadj(sys_call_table)
add r1,r1,r11
ldw r1,%lo(sys_call_table)(r1)
callr r1
/* If the syscall returns a negative result:
* Set r7 to 1 to indicate error,
* Negate r2 to get a positive error code
* If the syscall returns zero or a positive value:
* Set r7 to 0.
* The sigreturn system calls will skip the code below by
* adding to register ra. To avoid destroying registers
*
* FIXME: We probably need an orig_r7
*/
translate_rc_and_ret2:
movi r1,0
bge r2,zero,4f
sub r2,zero,r2
movi r1,1
4:
stw r2,PT_R2(sp)
stw r1,PT_R7(sp)
end_translate_rc_and_ret2:
SAVE_SWITCH_STACK
call syscall_trace
RESTORE_SWITCH_STACK
br ret_from_exception
Luser_return:
GET_THREAD_INFO r11 /* get thread_info pointer */
ldw r10,TI_FLAGS(r11) /* get thread_info->flags */
ANDI32 r11,r10,_TIF_WORK_MASK
beq r11,r0,restore_all /* Nothing to do */
BTBZ r1,r10,TIF_NEED_RESCHED,Lsignal_return
Lwork_resched:
call schedule
br ret_from_exception
Lsignal_return:
BTBZ r1,r10,TIF_SIGPENDING,restore_all
mov r5,sp /* pt_regs */
SAVE_SWITCH_STACK
mov r4,r0 /* oldset = 0 */
movi r6,1 /* syscall */
call do_signal
RESTORE_SWITCH_STACK
br restore_all
/***********************************************************************
* Handle external interrupts.
***********************************************************************
*/
/*
* This is the generic interrupt handler (for all hardware interrupt
* sources). It figures out the vector number and calls the appropriate
* interrupt service routine directly.
*/
external_interrupt:
rdctl r12,ipending
rdctl r9,ienable
and r12,r12,r9
/* skip if no interrupt is pending */
beq r12,r0,ret_from_interrupt
movi r24,-1
stw r24,PT_ORIG_R2(sp)
/*
* Process an external hardware interrupt.
*/
addi ea,ea,-4 /* re-issue the interrupted instruction */
stw ea,PT_EA(sp)
2: movi r4,%lo(-1) /* Start from bit position 0, highest priority */
/* This is the IRQ # for handler call */
1: andi r10,r12,1 /* Isolate bit we are interested in */
srli r12,r12,1 /* shift count is costly without hardware multiplier */
addi r4,r4,1
beq r10,r0,1b
mov r5,sp /* Setup pt_regs pointer for handler call */
call do_IRQ
rdctl r12,ipending /* check again if irq still pending */
rdctl r9,ienable /* Isolate possible interrupts */
and r12,r12,r9
bne r12,r0,2b
/* br ret_from_interrupt */ /* fall throught to ret_from_interrupt */
ENTRY(ret_from_interrupt)
ldw r1,PT_ESTATUS(sp) /* check if returning to kernel */
TSTBNZ r1,r1,ESTATUS_EU,Luser_return
#ifdef CONFIG_PREEMPT
GET_THREAD_INFO r1
ldw r4,TI_PREEMPT_COUNT(r1)
bne r4,r0,restore_all
need_resched:
ldw r4,TI_FLAGS(r1) // ? Need resched set
BTBZ r10,r4,TIF_NEED_RESCHED,restore_all
ldw r4,PT_ESTATUS(sp) // ? Interrupts off
andi r10,r4,STATUS_PIE
beq r10,r0,restore_all
movia r4,PREEMPT_ACTIVE
stw r4,TI_PREEMPT_COUNT(r1)
rdctl r10,status /* enable intrs again */
ori r10,r10,0x0001
wrctl status,r10
PUSH r1
call schedule
POP r1
mov r4,r0
stw r4,TI_PREEMPT_COUNT(r1)
rdctl r10,status /* disable intrs */
andi r10,r10,0xfffe
wrctl status, r10
br need_resched
#else
br restore_all
#endif
/***********************************************************************
* Syscalls implemented in assembly
***********************************************************************
*/
ENTRY(sys_nios2cmpxchg)
// r4 pointer to exchange variable
// r5 old value
// r6 new value
// r8 - old interrupt status (assert this to enabled?)
// r9 - temp
// Disable interrupts (keep old status in r8)
rdctl r8,status
andi r9,r8,0xfffe
wrctl status,r9
// Make sure we skip the r2/r7 translation code when we return.
addi ra,ra,(end_translate_rc_and_ret-translate_rc_and_ret)
ldw1: ldw r2, 0(r4)
bne r2, r5, .L6
// We had a match, store the new value
stw1: stw r6, 0(r4)
.L6:
// Reenable interrupts
wrctl status,r8
// Store return value
stw r2,PT_R2(sp)
// Indicate everything is ok
movi r2,0
stw r2,PT_R7(sp)
ret
fault:
movi r2,EFAULT
stw r2,PT_R2(sp)
movi r2,1
stw r2,PT_R7(sp)
wrctl status,r8
ret
// setup the exception table
.section __ex_table,"a"
.word ldw1, fault
.word stw1, fault
.previous
/***********************************************************************
* A few syscall wrappers
***********************************************************************
*/
ENTRY(sys_fork)
mov r4,sp
SAVE_SWITCH_STACK
call nios2_fork
RESTORE_SWITCH_STACK
ret
ENTRY(sys_vfork)
mov r4,sp
SAVE_SWITCH_STACK
call nios2_vfork
RESTORE_SWITCH_STACK
ret
ENTRY(sys_execve)
mov r4,sp
SAVE_SWITCH_STACK
call nios2_execve
RESTORE_SWITCH_STACK
ret
ENTRY(sys_clone)
mov r4,sp
SAVE_SWITCH_STACK
call nios2_clone
RESTORE_SWITCH_STACK
ret
ENTRY(sys_sigsuspend)
mov r4,sp
SAVE_SWITCH_STACK
call do_sigsuspend
RESTORE_SWITCH_STACK
ret
ENTRY(sys_rt_sigsuspend)
mov r4,sp
SAVE_SWITCH_STACK
call do_rt_sigsuspend
RESTORE_SWITCH_STACK
ret
ENTRY(sys_sigreturn)
mov r4,sp
SAVE_SWITCH_STACK
call do_sigreturn
RESTORE_SWITCH_STACK
addi ra,ra,(end_translate_rc_and_ret-translate_rc_and_ret)
ret
ENTRY(sys_sigaltstack)
ldw r4,PT_R4(sp)
ldw r5,PT_R5(sp)
ldw r6,PT_SP(sp)
SAVE_SWITCH_STACK
call do_sigaltstack
RESTORE_SWITCH_STACK
ret
ENTRY(sys_rt_sigreturn)
SAVE_SWITCH_STACK
mov r4,sp
call do_rt_sigreturn
RESTORE_SWITCH_STACK
addi ra,ra,(end_translate_rc_and_ret-translate_rc_and_ret)
ret
/***********************************************************************
* A few other wrappers and stubs
***********************************************************************
*/
protection_exception_pte:
rdctl r6,pteaddr
slli r6,r6,10
call do_page_fault
br ret_from_exception
protection_exception_ba:
rdctl r6,badaddr
call do_page_fault
br ret_from_exception
protection_exception_instr:
call handle_supervisor_instr
br ret_from_exception
handle_breakpoint:
call breakpoint_c
br ret_from_exception
#ifdef CONFIG_ALIGNMENT_TRAP
handle_unaligned:
SAVE_SWITCH_STACK
call handle_unaligned_c
RESTORE_SWITCH_STACK
br ret_from_exception
#else
handle_unaligned:
call handle_unaligned_c
br ret_from_exception
#endif
handle_illegal:
call handle_illegal_c
br ret_from_exception
handle_diverror:
call handle_diverror_c
br ret_from_exception
#ifdef CONFIG_KGDB
handle_kgdb_breakpoint:
call kgdb_breakpoint_c
br ret_from_exception
#endif
/*
* Beware - when entering resume, prev (the current task) is
* in r4, next (the new task) is in r5, don't change these
* registers.
*/
ENTRY(resume)
rdctl r7,status /* save thread status reg */
stw r7,TASK_THREAD+THREAD_KPSR(r4)
andi r7,r7,0x0fffe /* disable interrupts */
wrctl status,r7
SAVE_SWITCH_STACK
stw sp,TASK_THREAD+THREAD_KSP(r4) /* save kernel stack pointer */
ldw sp,TASK_THREAD+THREAD_KSP(r5) /* restore new thread stack */
movia r24,_current_thread /* save thread */
GET_THREAD_INFO r1
stw r1,0(r24)
RESTORE_SWITCH_STACK
ldw r7,TASK_THREAD+THREAD_KPSR(r5) /* restore thread status reg */
wrctl status,r7
ret
ENTRY(ret_from_fork)
call schedule_tail
br ret_from_exception
用标志重新编译给我们：
$ setarch i386 make -j1 V=1make -f tools/autotools.mk autotools-cache
...
/bin/bash /home/developer/altera/nios2-linux/linux-2.6/scripts/checksyscalls.sh nios2-linux-gnu-gcc -Wp,-MD,./.missing-syscalls.d -nostdinc -isystem /opt/nios2/lib/gcc/nios2-linux-uclibc/3.4.6/include -I/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/include -Iarch/nios2/include/generated -Iinclude -I/home/developer/altera/nios2-linux/linux-2.6/include -include /home/developer/altera/nios2-linux/linux-2.6/include/linux/kconfig.h -I/home/developer/altera/nios2-linux/linux-2.6/. -I. -D__KERNEL__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -fno-delete-null-pointer-checks -O2 -pipe -D__linux__ -D__ELF__ -mhw-mul -mno-hw-mulx -mhw-div -fno-optimize-sibling-calls -DUTS_SYSNAME=\"Linux\" -fno-builtin -G 0 -Wno-unused-but-set-variable -fomit-frame-pointer -Wdeclaration-after-statement -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(missing_syscalls)" -D"KBUILD_MODNAME=KBUILD_STR(missing_syscalls)"
make -f /home/developer/altera/nios2-linux/linux-2.6/scripts/Makefile.build obj=init
make -f /home/developer/altera/nios2-linux/linux-2.6/scripts/Makefile.build obj=usr
make -f /home/developer/altera/nios2-linux/linux-2.6/scripts/Makefile.build obj=arch/nios2/kernel
make -f /home/developer/altera/nios2-linux/linux-2.6/scripts/Makefile.build obj=arch/nios2/mm
/bin/bash /home/developer/altera/nios2-linux/linux-2.6/scripts/gen_initramfs_list.sh -l -d > usr/.initramfs_data.cpio.d
make -f /home/developer/altera/nios2-linux/linux-2.6/scripts/Makefile.build obj=arch/nios2/platform
(cat /dev/null; ) > usr/modules.order
nios2-linux-gnu-gcc -Wp,-MD,arch/nios2/kernel/.entry.o.d -nostdinc -isystem /opt/nios2/lib/gcc/nios2-linux-uclibc/3.4.6/include -I/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/include -Iarch/nios2/include/generated -Iinclude -I/home/developer/altera/nios2-linux/linux-2.6/include -include /home/developer/altera/nios2-linux/linux-2.6/include/linux/kconfig.h -D__KERNEL__ -D__ASSEMBLY__ -c -o arch/nios2/kernel/entry.o /home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel/entry.S
/bin/bash /home/developer/altera/nios2-linux/linux-2.6/scripts/mkcompile_h include/generated/compile.h \
"nios2" "" "" "nios2-linux-gnu-gcc -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -fno-delete-null-pointer-checks -O2 -pipe -D__linux__ -D__ELF__ -mhw-mul -mno-hw-mulx -mhw-div -fno-optimize-sibling-calls -DUTS_SYSNAME=\"Linux\" -fno-builtin -G 0 -Wno-unused-but-set-variable -fomit-frame-pointer -Wdeclaration-after-statement "
/bin/bash /home/developer/altera/nios2-linux/linux-2.6/scripts/gen_initramfs_list.sh -o usr/initramfs_data.cpio -d
(cat /dev/null; ) > init/modules.order
nios2-linux-gnu-gcc -Wp,-MD,arch/nios2/kernel/.ptrace.o.d -nostdinc -isystem /opt/nios2/lib/gcc/nios2-linux-uclibc/3.4.6/include -I/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/include -Iarch/nios2/include/generated -Iinclude -I/home/developer/altera/nios2-linux/linux-2.6/include -include /home/developer/altera/nios2-linux/linux-2.6/include/linux/kconfig.h -I/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel -Iarch/nios2/kernel -D__KERNEL__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -fno-delete-null-pointer-checks -O2 -pipe -D__linux__ -D__ELF__ -mhw-mul -mno-hw-mulx -mhw-div -fno-optimize-sibling-calls -DUTS_SYSNAME=\"Linux\" -fno-builtin -G 0 -Wno-unused-but-set-variable -fomit-frame-pointer -Wdeclaration-after-statement -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(ptrace)" -D"KBUILD_MODNAME=KBUILD_STR(ptrace)" -c -o arch/nios2/kernel/ptrace.o /home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel/ptrace.c
nios2-linux-gnu-gcc -Wp,-MD,arch/nios2/kernel/.setup.o.d -nostdinc -isystem /opt/nios2/lib/gcc/nios2-linux-uclibc/3.4.6/include -I/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/include -Iarch/nios2/include/generated -Iinclude -I/home/developer/altera/nios2-linux/linux-2.6/include -include /home/developer/altera/nios2-linux/linux-2.6/include/linux/kconfig.h -I/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel -Iarch/nios2/kernel -D__KERNEL__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -fno-delete-null-pointer-checks -O2 -pipe -D__linux__ -D__ELF__ -mhw-mul -mno-hw-mulx -mhw-div -fno-optimize-sibling-calls -DUTS_SYSNAME=\"Linux\" -fno-builtin -G 0 -Wno-unused-but-set-variable -fomit-frame-pointer -Wdeclaration-after-statement -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(setup)" -D"KBUILD_MODNAME=KBUILD_STR(setup)" -c -o arch/nios2/kernel/setup.o /home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel/setup.c
nios2-linux-gnu-gcc -Wp,-MD,arch/nios2/kernel/.signal.o.d -nostdinc -isystem /opt/nios2/lib/gcc/nios2-linux-uclibc/3.4.6/include -I/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/include -Iarch/nios2/include/generated -Iinclude -I/home/developer/altera/nios2-linux/linux-2.6/include -include /home/developer/altera/nios2-linux/linux-2.6/include/linux/kconfig.h -I/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel -Iarch/nios2/kernel -D__KERNEL__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -fno-delete-null-pointer-checks -O2 -pipe -D__linux__ -D__ELF__ -mhw-mul -mno-hw-mulx -mhw-div -fno-optimize-sibling-calls -DUTS_SYSNAME=\"Linux\" -fno-builtin -G 0 -Wno-unused-but-set-variable -fomit-frame-pointer -Wdeclaration-after-statement -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(signal)" -D"KBUILD_MODNAME=KBUILD_STR(signal)" -c -o arch/nios2/kernel/signal.o /home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel/signal.c
/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel/entry.S: Assembler messages:
/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel/entry.S:138: Error: expecting control register
/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel/entry.S:138: Error: unknown register r5
/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel/entry.S:546: Error: expecting control register
/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/kernel/entry.S:546: Error: unknown register r6
(cat /dev/null; ) > arch/nios2/mm/modules.order
make[3]: *** [arch/nios2/kernel/entry.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make -f /home/developer/altera/nios2-linux/linux-2.6/scripts/Makefile.build obj=arch/nios2/boot
make -f /home/developer/altera/nios2-linux/linux-2.6/scripts/Makefile.build obj=kernel
(cat /dev/null; ) > arch/nios2/platform/modules.order
(cat /dev/null; ) > arch/nios2/boot/modules.order
/home/developer/altera/nios2-linux/uClinux-dist/linux-2.6.x/scripts/dtc/dtc -O dtb -o arch/nios2/boot/system.dtb -b 0 -d arch/nios2/boot/.system.dtb.d /home/developer/Downloads/nios.dts
DTC: dts->dtb on file "/home/developer/Downloads/nios.dts"
nios2-linux-gnu-gcc -Wp,-MD,arch/nios2/boot/.linked_dtb.o.d -nostdinc -isystem /opt/nios2/lib/gcc/nios2-linux-uclibc/3.4.6/include -I/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/include -Iarch/nios2/include/generated -Iinclude -I/home/developer/altera/nios2-linux/linux-2.6/include -include /home/developer/altera/nios2-linux/linux-2.6/include/linux/kconfig.h -D__KERNEL__ -D__ASSEMBLY__ -c -o arch/nios2/boot/linked_dtb.o /home/developer/altera/nios2-linux/linux-2.6/arch/nios2/boot/linked_dtb.S
make[2]: *** [arch/nios2/kernel] Error 2
make[2]: *** Waiting for unfinished jobs....
nios2-linux-gnu-gcc -Wp,-MD,usr/.initramfs_data.o.d -nostdinc -isystem /opt/nios2/lib/gcc/nios2-linux-uclibc/3.4.6/include -I/home/developer/altera/nios2-linux/linux-2.6/arch/nios2/include -Iarch/nios2/include/generated -Iinclude -I/home/developer/altera/nios2-linux/linux-2.6/include -include /home/developer/altera/nios2-linux/linux-2.6/include/linux/kconfig.h -D__KERNEL__ -D__ASSEMBLY__ -DINITRAMFS_IMAGE="usr/initramfs_data.cpio" -c -o usr/initramfs_data.o /home/developer/altera/nios2-linux/linux-2.6/usr/initramfs_data.S
nios2-linux-gnu-ld -mnios2elf -r -o arch/nios2/boot/built-in.o arch/nios2/boot/linked_dtb.o
nios2-linux-gnu-ld -mnios2elf -r -o usr/built-in.o usr/initramfs_data.o
make[2]: *** wait: No child processes. Stop.
make[1]: *** [sub-make] Error 2
make[1]: Leaving directory `/home/developer/altera/nios2-linux/linux-2.6'
make: *** [linux] Error 1