Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1000 insertions, 0 deletions

diff --git a/arch/m32r/kernel/entry.S b/arch/m32r/kernel/entry.S
new file mode 100644
index 0000000..dddbf6b
--- /dev/null
+++ b/arch/m32r/kernel/entry.S
@@ -0,0 +1,1000 @@
+/*
+ *  linux/arch/m32r/kernel/entry.S
+ *
+ *  Copyright (c) 2001, 2002  Hirokazu Takata, Hitoshi Yamamoto, H. Kondo
+ *  Copyright (c) 2003  Hitoshi Yamamoto
+ *  Copyright (c) 2004  Hirokazu Takata <takata at linux-m32r.org>
+ *
+ *  Taken from i386 version.
+ *    Copyright (C) 1991, 1992  Linus Torvalds
+ */
+
+/*
+ * entry.S contains the system-call and fault low-level handling routines.
+ * This also contains the timer-interrupt handler, as well as all interrupts
+ * and faults that can result in a task-switch.
+ *
+ * NOTE: This code handles signal-recognition, which happens every time
+ * after a timer-interrupt and after each system call.
+ *
+ * Stack layout in 'ret_from_system_call':
+ * 	ptrace needs to have all regs on the stack.
+ *	if the order here is changed, it needs to be
+ *	updated in fork.c:copy_process, signal.c:do_signal,
+ *	ptrace.c and ptrace.h
+ *
+ * M32Rx/M32R2				M32R
+ *       @(sp)      - r4		ditto
+ *       @(0x04,sp) - r5		ditto
+ *       @(0x08,sp) - r6		ditto
+ *       @(0x0c,sp) - *pt_regs		ditto
+ *       @(0x10,sp) - r0		ditto
+ *       @(0x14,sp) - r1		ditto
+ *       @(0x18,sp) - r2		ditto
+ *       @(0x1c,sp) - r3		ditto
+ *       @(0x20,sp) - r7		ditto
+ *       @(0x24,sp) - r8		ditto
+ *       @(0x28,sp) - r9		ditto
+ *       @(0x2c,sp) - r10		ditto
+ *       @(0x30,sp) - r11		ditto
+ *       @(0x34,sp) - r12		ditto
+ *       @(0x38,sp) - syscall_nr	ditto
+ *       @(0x3c,sp) - acc0h		@(0x3c,sp) - acch
+ *       @(0x40,sp) - acc0l		@(0x40,sp) - accl
+ *       @(0x44,sp) - acc1h		@(0x44,sp) - psw
+ *       @(0x48,sp) - acc1l		@(0x48,sp) - bpc
+ *       @(0x4c,sp) - psw		@(0x4c,sp) - bbpsw
+ *       @(0x50,sp) - bpc		@(0x50,sp) - bbpc
+ *       @(0x54,sp) - bbpsw		@(0x54,sp) - spu (cr3)
+ *       @(0x58,sp) - bbpc		@(0x58,sp) - fp (r13)
+ *       @(0x5c,sp) - spu (cr3)		@(0x5c,sp) - lr (r14)
+ *       @(0x60,sp) - fp (r13)		@(0x60,sp) - spi (cr12)
+ *       @(0x64,sp) - lr (r14)		@(0x64,sp) - orig_r0
+ *       @(0x68,sp) - spi (cr2)
+ *       @(0x6c,sp) - orig_r0
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/linkage.h>
+#include <asm/irq.h>
+#include <asm/unistd.h>
+#include <asm/assembler.h>
+#include <asm/thread_info.h>
+#include <asm/errno.h>
+#include <asm/segment.h>
+#include <asm/smp.h>
+#include <asm/page.h>
+#include <asm/m32r.h>
+#include <asm/mmu_context.h>
+
+#if !defined(CONFIG_MMU)
+#define sys_madvise		sys_ni_syscall
+#define sys_readahead		sys_ni_syscall
+#define sys_mprotect		sys_ni_syscall
+#define sys_msync		sys_ni_syscall
+#define sys_mlock		sys_ni_syscall
+#define sys_munlock		sys_ni_syscall
+#define sys_mlockall		sys_ni_syscall
+#define sys_munlockall		sys_ni_syscall
+#define sys_mremap		sys_ni_syscall
+#define sys_mincore		sys_ni_syscall
+#define sys_remap_file_pages	sys_ni_syscall
+#endif /* CONFIG_MMU */
+
+#define R4(reg)			@reg
+#define R5(reg)			@(0x04,reg)
+#define R6(reg)			@(0x08,reg)
+#define PTREGS(reg)		@(0x0C,reg)
+#define R0(reg)			@(0x10,reg)
+#define R1(reg)			@(0x14,reg)
+#define R2(reg)			@(0x18,reg)
+#define R3(reg)			@(0x1C,reg)
+#define R7(reg)			@(0x20,reg)
+#define R8(reg)			@(0x24,reg)
+#define R9(reg)			@(0x28,reg)
+#define R10(reg)		@(0x2C,reg)
+#define R11(reg)		@(0x30,reg)
+#define R12(reg)		@(0x34,reg)
+#define SYSCALL_NR(reg)		@(0x38,reg)
+#if defined(CONFIG_ISA_M32R2) && defined(CONFIG_ISA_DSP_LEVEL2)
+#define ACC0H(reg)		@(0x3C,reg)
+#define ACC0L(reg)		@(0x40,reg)
+#define ACC1H(reg)		@(0x44,reg)
+#define ACC1L(reg)		@(0x48,reg)
+#define PSW(reg)		@(0x4C,reg)
+#define BPC(reg)		@(0x50,reg)
+#define BBPSW(reg)		@(0x54,reg)
+#define BBPC(reg)		@(0x58,reg)
+#define SPU(reg)		@(0x5C,reg)
+#define FP(reg)			@(0x60,reg)  /* FP = R13 */
+#define LR(reg)			@(0x64,reg)
+#define SP(reg)			@(0x68,reg)
+#define ORIG_R0(reg)		@(0x6C,reg)
+#elif defined(CONFIG_ISA_M32R2) || defined(CONFIG_ISA_M32R)
+#define ACCH(reg)		@(0x3C,reg)
+#define ACCL(reg)		@(0x40,reg)
+#define PSW(reg)		@(0x44,reg)
+#define BPC(reg)		@(0x48,reg)
+#define BBPSW(reg)		@(0x4C,reg)
+#define BBPC(reg)		@(0x50,reg)
+#define SPU(reg)		@(0x54,reg)
+#define FP(reg)			@(0x58,reg)  /* FP = R13 */
+#define LR(reg)			@(0x5C,reg)
+#define SP(reg)			@(0x60,reg)
+#define ORIG_R0(reg)		@(0x64,reg)
+#else
+#error unknown isa configuration
+#endif
+
+CF_MASK		= 0x00000001
+TF_MASK		= 0x00000100
+IF_MASK		= 0x00000200
+DF_MASK		= 0x00000400
+NT_MASK		= 0x00004000
+VM_MASK		= 0x00020000
+
+#ifdef CONFIG_PREEMPT
+#define preempt_stop(x)		CLI(x)
+#else
+#define preempt_stop(x)
+#define resume_kernel		restore_all
+#endif
+
+ENTRY(ret_from_fork)
+	ld	r0, @sp+
+	bl	schedule_tail
+	GET_THREAD_INFO(r8)
+	bra	syscall_exit
+
+/*
+ * Return to user mode is not as complex as all this looks,
+ * but we want the default path for a system call return to
+ * go as quickly as possible which is why some of this is
+ * less clear than it otherwise should be.
+ */
+
+	; userspace resumption stub bypassing syscall exit tracing
+	ALIGN
+ret_from_exception:
+	preempt_stop(r4)
+ret_from_intr:
+	ld	r4, PSW(sp)
+#ifdef CONFIG_ISA_M32R2
+	and3	r4, r4, #0x8800		; check BSM and BPM bits
+#else
+	and3	r4, r4, #0x8000		; check BSM bit
+#endif
+	beqz	r4, resume_kernel
+ENTRY(resume_userspace)
+	CLI(r4)				; make sure we don't miss an interrupt
+					; setting need_resched or sigpending
+					; between sampling and the iret
+	GET_THREAD_INFO(r8)
+	ld	r9, @(TI_FLAGS, r8)
+	and3	r4, r9, #_TIF_WORK_MASK	; is there any work to be done on
+					; int/exception return?
+	bnez	r4, work_pending
+	bra	restore_all
+
+#ifdef CONFIG_PREEMPT
+ENTRY(resume_kernel)
+	GET_THREAD_INFO(r8)
+	ld	r9, @(TI_PRE_COUNT, r8)	; non-zero preempt_count ?
+	bnez	r9, restore_all
+need_resched:
+	ld	r9, @(TI_FLAGS, r8)	; need_resched set ?
+	and3	r4, r9, #_TIF_NEED_RESCHED
+	beqz	r4, restore_all
+	ld	r4, PSW(sp)		; interrupts off (exception path) ?
+	and3	r4, r4, #0x4000
+	beqz	r4, restore_all
+	LDIMM	(r4, PREEMPT_ACTIVE)
+	st	r4, @(TI_PRE_COUNT, r8)
+	STI(r4)
+	bl	schedule
+	ldi	r4, #0
+	st	r4, @(TI_PRE_COUNT, r8)
+	CLI(r4)
+	bra	need_resched
+#endif
+
+	; system call handler stub
+ENTRY(system_call)
+	SWITCH_TO_KERNEL_STACK
+	SAVE_ALL
+	STI(r4)				; Enable interrupt
+	st	sp, PTREGS(sp)		; implicit pt_regs parameter
+	cmpui	r7, #NR_syscalls
+	bnc	syscall_badsys
+	st	r7, SYSCALL_NR(sp)	; syscall_nr
+					; system call tracing in operation
+	GET_THREAD_INFO(r8)
+	ld	r9, @(TI_FLAGS, r8)
+	and3	r4, r9, #_TIF_SYSCALL_TRACE
+	bnez	r4, syscall_trace_entry
+syscall_call:
+	slli	r7, #2			; table jump for the system call
+	LDIMM	(r4, sys_call_table)
+	add	r7, r4
+	ld	r7, @r7
+	jl	r7			; execute system call
+	st	r0, R0(sp)		; save the return value
+syscall_exit:
+	CLI(r4)				; make sure we don't miss an interrupt
+					; setting need_resched or sigpending
+					; between sampling and the iret
+	ld	r9, @(TI_FLAGS, r8)
+	and3	r4, r9, #_TIF_ALLWORK_MASK	; current->work
+	bnez	r4, syscall_exit_work
+restore_all:
+	RESTORE_ALL
+
+	# perform work that needs to be done immediately before resumption
+	# r9 : frags
+	ALIGN
+work_pending:
+	and3	r4, r9, #_TIF_NEED_RESCHED
+	beqz	r4, work_notifysig
+work_resched:
+	bl	schedule
+	CLI(r4)				; make sure we don't miss an interrupt
+					; setting need_resched or sigpending
+					; between sampling and the iret
+	ld	r9, @(TI_FLAGS, r8)
+	and3	r4, r9, #_TIF_WORK_MASK	; is there any work to be done other
+					; than syscall tracing?
+	beqz	r4, restore_all
+	and3	r4, r4, #_TIF_NEED_RESCHED
+	bnez	r4, work_resched
+
+work_notifysig:				; deal with pending signals and
+					; notify-resume requests
+	mv	r0, sp			; arg1 : struct pt_regs *regs
+	ldi	r1, #0			; arg2 : sigset_t *oldset
+	mv	r2, r9			; arg3 : __u32 thread_info_flags
+	bl	do_notify_resume
+	bra	restore_all
+
+	; perform syscall exit tracing
+	ALIGN
+syscall_trace_entry:
+	ldi	r4, #-ENOSYS
+	st	r4, R0(sp)
+	bl	do_syscall_trace
+	ld	r0, ORIG_R0(sp)
+	ld	r1, R1(sp)
+	ld	r2, R2(sp)
+	ld	r3, R3(sp)
+	ld	r4, R4(sp)
+	ld	r5, R5(sp)
+	ld	r6, R6(sp)
+	ld	r7, SYSCALL_NR(sp)
+	cmpui	r7, #NR_syscalls
+	bc	syscall_call
+	bra	syscall_exit
+
+	; perform syscall exit tracing
+	ALIGN
+syscall_exit_work:
+	ld	r9, @(TI_FLAGS, r8)
+	and3	r4, r9, #_TIF_SYSCALL_TRACE
+	beqz	r4, work_pending
+	STI(r4)				; could let do_syscall_trace() call
+					; schedule() instead
+	bl	do_syscall_trace
+	bra	resume_userspace
+
+	ALIGN
+syscall_fault:
+	SAVE_ALL
+	GET_THREAD_INFO(r8)
+	ldi	r4, #-EFAULT
+	st	r4, R0(sp)
+	bra	resume_userspace
+
+	ALIGN
+syscall_badsys:
+	ldi	r4, #-ENOSYS
+	st	r4, R0(sp)
+	bra	resume_userspace
+
+	.global	eit_vector
+
+	.equ ei_vec_table, eit_vector + 0x0200
+
+/*
+ * EI handler routine
+ */
+ENTRY(ei_handler)
+#if defined(CONFIG_CHIP_M32700)
+	SWITCH_TO_KERNEL_STACK
+	; WORKAROUND: force to clear SM bit and use the kernel stack (SPI).
+#endif
+	SAVE_ALL
+	mv	r1, sp			; arg1(regs)
+#if defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_XNUX2) \
+	|| defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_M32102) \
+	|| defined(CONFIG_CHIP_OPSP)
+
+;    GET_ICU_STATUS;
+	seth	r0, #shigh(M32R_ICU_ISTS_ADDR)
+	ld	r0, @(low(M32R_ICU_ISTS_ADDR),r0)
+	st	r0, @-sp
+#if defined(CONFIG_SMP)
+	/*
+	 * If IRQ == 0      --> Nothing to do,  Not write IMASK
+	 * If IRQ == IPI    --> Do IPI handler, Not write IMASK
+	 * If IRQ != 0, IPI --> Do do_IRQ(),    Write IMASK
+	 */
+	slli	r0, #4
+	srli	r0, #24			; r0(irq_num<<2)
+	;; IRQ exist check
+#if defined(CONFIG_CHIP_M32700)
+	/* WORKAROUND: IMASK bug M32700-TS1, TS2 chip. */
+	beqz	r0, 3f			; if (!irq_num) goto exit
+#else
+	beqz	r0, 1f			; if (!irq_num) goto exit
+#endif	/* WORKAROUND */
+	;; IPI check
+	cmpi	r0, #(M32R_IRQ_IPI0<<2)	; ISN < IPI0 check
+	bc	2f
+	cmpi	r0, #((M32R_IRQ_IPI7+1)<<2)	; ISN > IPI7 check
+	bnc	2f
+	LDIMM	(r2, ei_vec_table)
+	add	r2, r0
+	ld	r2, @r2
+	beqz	r2, 1f			; if (no IPI handler) goto exit
+	mv	r0, r1			; arg0(regs)
+	jl	r2
+	.fillinsn
+1:
+	addi	sp, #4
+	bra	ret_to_intr
+#if defined(CONFIG_CHIP_M32700)
+	/* WORKAROUND: IMASK bug M32700-TS1, TS2 chip. */
+	.fillinsn
+3:
+	ld24	r14, #0x00070000
+	seth	r0, #shigh(M32R_ICU_IMASK_ADDR)
+	st	r14, @(low(M32R_ICU_IMASK_ADDR), r0)
+	addi	sp, #4
+	bra	ret_to_intr
+#endif	/* WORKAROUND */
+	;; do_IRQ
+	.fillinsn
+2:
+	srli	r0, #2
+#if defined(CONFIG_PLAT_USRV)
+	add3	r2, r0, #-(M32R_IRQ_INT1)	; INT1# interrupt
+	bnez	r2, 9f
+	; read ICU status register of PLD
+	seth	r0, #high(PLD_ICUISTS)
+	or3	r0, r0, #low(PLD_ICUISTS)
+	lduh	r0, @r0
+	slli	r0, #21
+	srli	r0, #27				; ISN
+	addi	r0, #(M32700UT_PLD_IRQ_BASE)
+	.fillinsn
+9:
+#elif defined(CONFIG_PLAT_M32700UT)
+	add3	r2, r0, #-(M32R_IRQ_INT1)       ; INT1# interrupt
+	bnez	r2, check_int0
+	; read ICU status register of PLD
+	seth	r0, #high(PLD_ICUISTS)
+	or3	r0, r0, #low(PLD_ICUISTS)
+	lduh	r0, @r0
+	slli	r0, #21
+	srli	r0, #27                         ; ISN
+	addi	r0, #(M32700UT_PLD_IRQ_BASE)
+	bra	check_end
+	.fillinsn
+check_int0:
+	add3	r2, r0, #-(M32R_IRQ_INT0)       ; INT0# interrupt
+	bnez	r2, check_int2
+	; read ICU status of LAN-board
+	seth	r0, #high(M32700UT_LAN_ICUISTS)
+	or3	r0, r0, #low(M32700UT_LAN_ICUISTS)
+	lduh	r0, @r0
+	slli	r0, #21
+	srli	r0, #27                         ; ISN
+	add3	r0, r0, #(M32700UT_LAN_PLD_IRQ_BASE)
+	bra	check_end
+	.fillinsn
+check_int2:
+	add3	r2, r0, #-(M32R_IRQ_INT2)       ; INT2# interrupt
+	bnez	r2, check_end
+	; read ICU status of LCD-board
+	seth	r0, #high(M32700UT_LCD_ICUISTS)
+	or3	r0, r0, #low(M32700UT_LCD_ICUISTS)
+	lduh	r0, @r0
+	slli	r0, #21
+	srli	r0, #27                         ; ISN
+	add3	r0, r0, #(M32700UT_LCD_PLD_IRQ_BASE)
+	bra	check_end
+	.fillinsn
+check_end:
+#elif defined(CONFIG_PLAT_OPSPUT)
+	add3	r2, r0, #-(M32R_IRQ_INT1)       ; INT1# interrupt
+	bnez	r2, check_int0
+	; read ICU status register of PLD
+	seth	r0, #high(PLD_ICUISTS)
+	or3	r0, r0, #low(PLD_ICUISTS)
+	lduh	r0, @r0
+	slli	r0, #21
+	srli	r0, #27                         ; ISN
+	addi	r0, #(OPSPUT_PLD_IRQ_BASE)
+	bra	check_end
+	.fillinsn
+check_int0:
+	add3	r2, r0, #-(M32R_IRQ_INT0)       ; INT0# interrupt
+	bnez	r2, check_int2
+	; read ICU status of LAN-board
+	seth	r0, #high(OPSPUT_LAN_ICUISTS)
+	or3	r0, r0, #low(OPSPUT_LAN_ICUISTS)
+	lduh	r0, @r0
+	slli	r0, #21
+	srli	r0, #27                         ; ISN
+	add3	r0, r0, #(OPSPUT_LAN_PLD_IRQ_BASE)
+	bra	check_end
+	.fillinsn
+check_int2:
+	add3	r2, r0, #-(M32R_IRQ_INT2)       ; INT2# interrupt
+	bnez	r2, check_end
+	; read ICU status of LCD-board
+	seth	r0, #high(OPSPUT_LCD_ICUISTS)
+	or3	r0, r0, #low(OPSPUT_LCD_ICUISTS)
+	lduh	r0, @r0
+	slli	r0, #21
+	srli	r0, #27                         ; ISN
+	add3	r0, r0, #(OPSPUT_LCD_PLD_IRQ_BASE)
+	bra	check_end
+	.fillinsn
+check_end:
+#endif  /* CONFIG_PLAT_OPSPUT */
+	bl	do_IRQ			; r0(irq), r1(regs)
+#else  /* not CONFIG_SMP */
+	srli	r0, #22			; r0(irq)
+#if defined(CONFIG_PLAT_USRV)
+	add3	r2, r0, #-(M32R_IRQ_INT1)	; INT1# interrupt
+	bnez	r2, 1f
+	; read ICU status register of PLD
+	seth	r0, #high(PLD_ICUISTS)
+	or3	r0, r0, #low(PLD_ICUISTS)
+	lduh	r0, @r0
+	slli	r0, #21
+	srli	r0, #27				; ISN
+	addi	r0, #(M32700UT_PLD_IRQ_BASE)
+	.fillinsn
+1:
+#elif defined(CONFIG_PLAT_M32700UT)
+	add3	r2, r0, #-(M32R_IRQ_INT1)       ; INT1# interrupt
+	bnez	r2, check_int0
+	; read ICU status register of PLD
+	seth	r0, #high(PLD_ICUISTS)
+	or3	r0, r0, #low(PLD_ICUISTS)
+	lduh	r0, @r0
+	slli	r0, #21
+	srli	r0, #27                         ; ISN
+	addi	r0, #(M32700UT_PLD_IRQ_BASE)
+	bra	check_end
+	.fillinsn
+check_int0:
+	add3	r2, r0, #-(M32R_IRQ_INT0)       ; INT0# interrupt
+	bnez	r2, check_int2
+	; read ICU status of LAN-board
+	seth	r0, #high(M32700UT_LAN_ICUISTS)
+	or3	r0, r0, #low(M32700UT_LAN_ICUISTS)
+	lduh	r0, @r0
+	slli	r0, #21
+	srli	r0, #27                         ; ISN
+	add3	r0, r0, #(M32700UT_LAN_PLD_IRQ_BASE)
+	bra	check_end
+	.fillinsn
+check_int2:
+	add3	r2, r0, #-(M32R_IRQ_INT2)       ; INT2# interrupt
+	bnez	r2, check_end
+	; read ICU status of LCD-board
+	seth	r0, #high(M32700UT_LCD_ICUISTS)
+	or3	r0, r0, #low(M32700UT_LCD_ICUISTS)
+	lduh	r0, @r0
+	slli	r0, #21
+	srli	r0, #27                         ; ISN
+	add3	r0, r0, #(M32700UT_LCD_PLD_IRQ_BASE)
+	bra	check_end
+	.fillinsn
+check_end:
+#elif defined(CONFIG_PLAT_OPSPUT)
+	add3	r2, r0, #-(M32R_IRQ_INT1)       ; INT1# interrupt
+	bnez	r2, check_int0
+	; read ICU status register of PLD
+	seth	r0, #high(PLD_ICUISTS)
+	or3	r0, r0, #low(PLD_ICUISTS)
+	lduh	r0, @r0
+	slli	r0, #21
+	srli	r0, #27                         ; ISN
+	addi	r0, #(OPSPUT_PLD_IRQ_BASE)
+	bra	check_end
+	.fillinsn
+check_int0:
+	add3	r2, r0, #-(M32R_IRQ_INT0)       ; INT0# interrupt
+	bnez	r2, check_int2
+	; read ICU status of LAN-board
+	seth	r0, #high(OPSPUT_LAN_ICUISTS)
+	or3	r0, r0, #low(OPSPUT_LAN_ICUISTS)
+	lduh	r0, @r0
+	slli	r0, #21
+	srli	r0, #27                         ; ISN
+	add3	r0, r0, #(OPSPUT_LAN_PLD_IRQ_BASE)
+	bra	check_end
+	.fillinsn
+check_int2:
+	add3	r2, r0, #-(M32R_IRQ_INT2)       ; INT2# interrupt
+	bnez	r2, check_end
+	; read ICU status of LCD-board
+	seth	r0, #high(OPSPUT_LCD_ICUISTS)
+	or3	r0, r0, #low(OPSPUT_LCD_ICUISTS)
+	lduh	r0, @r0
+	slli	r0, #21
+	srli	r0, #27                         ; ISN
+	add3	r0, r0, #(OPSPUT_LCD_PLD_IRQ_BASE)
+	bra	check_end
+	.fillinsn
+check_end:
+#endif  /* CONFIG_PLAT_OPSPUT */
+	bl	do_IRQ
+#endif  /* CONFIG_SMP */
+	ld	r14, @sp+
+	seth	r0, #shigh(M32R_ICU_IMASK_ADDR)
+	st	r14, @(low(M32R_ICU_IMASK_ADDR),r0)
+#else
+#error no chip configuration
+#endif
+ret_to_intr:
+	bra  ret_from_intr
+
+/*
+ * Default EIT handler
+ */
+	ALIGN
+int_msg:
+	.asciz  "Unknown interrupt\n"
+	.byte	0
+
+ENTRY(default_eit_handler)
+	push	r0
+	mvfc	r0, psw
+	push	r1
+	push	r2
+	push	r3
+	push	r0
+	LDIMM	(r0, __KERNEL_DS)
+	mv	r0, r1
+	mv	r0, r2
+	LDIMM	(r0, int_msg)
+	bl	printk
+	pop	r0
+	pop	r3
+	pop	r2
+	pop	r1
+	mvtc	r0, psw
+	pop	r0
+infinit:
+	bra	infinit
+
+#ifdef CONFIG_MMU
+/*
+ * Access Exception handler
+ */
+ENTRY(ace_handler)
+	SWITCH_TO_KERNEL_STACK
+	SAVE_ALL
+
+	seth	r2, #shigh(MMU_REG_BASE)	/* Check status register */
+	ld	r4, @(low(MESTS_offset),r2)
+	st	r4, @(low(MESTS_offset),r2)
+	srl3	r1, r4, #4
+#ifdef CONFIG_CHIP_M32700
+	and3	r1, r1, #0x0000ffff
+	; WORKAROUND: ignore TME bit for the M32700(TS1).
+#endif /* CONFIG_CHIP_M32700 */
+	beqz	r1, inst
+oprand:
+	ld	r2, @(low(MDEVA_offset),r2)	; set address
+	srli	r2, #12
+	slli	r2, #12
+	srli	r1, #1
+	bra	1f
+inst:
+	and3	r1, r4, #2
+	srli	r1, #1
+	or3	r1, r1, #8
+	mvfc	r2, bpc				; set address
+	.fillinsn
+1:
+	mvfc	r3, psw
+	mv	r0, sp
+	and3	r3, r3, 0x800
+	srli	r3, #9
+	or	r1, r3
+	/*
+	 * do_page_fault():
+	 *    r0 : struct pt_regs *regs
+	 *    r1 : unsigned long error-code
+	 *    r2 : unsigned long address
+	 * error-code:
+	 *    +------+------+------+------+
+	 *    | bit3 | bit2 | bit1 | bit0 |
+	 *    +------+------+------+------+
+	 *    bit 3 == 0:means data,          1:means instruction
+	 *    bit 2 == 0:means kernel,        1:means user-mode
+	 *    bit 1 == 0:means read,          1:means write
+	 *    bit 0 == 0:means no page found  1:means protection fault
+	 *
+	 */
+	bl	do_page_fault
+	bra	ret_from_intr
+#endif  /* CONFIG_MMU */
+
+
+ENTRY(alignment_check)
+/* void alignment_check(int error_code) */
+	SWITCH_TO_KERNEL_STACK
+	SAVE_ALL
+	ldi	r1, #0x30			; error_code
+	mv	r0, sp				; pt_regs
+	bl	do_alignment_check
+error_code:
+	bra	ret_from_exception
+
+ENTRY(rie_handler)
+/* void rie_handler(int error_code) */
+	SWITCH_TO_KERNEL_STACK
+	SAVE_ALL
+	mvfc	r0, bpc
+	ld	r1, @r0
+	seth	r0, #0xa0f0
+	st	r1, @r0
+	ldi	r1, #0x20			; error_code
+	mv	r0, sp				; pt_regs
+	bl	do_rie_handler
+	bra	error_code
+
+ENTRY(pie_handler)
+/* void pie_handler(int error_code) */
+	SWITCH_TO_KERNEL_STACK
+	SAVE_ALL
+	ldi	r1, #0				; error_code ; FIXME
+	mv	r0, sp				; pt_regs
+	bl	do_pie_handler
+	bra	error_code
+
+ENTRY(debug_trap)
+	.global	withdraw_debug_trap
+	/* void debug_trap(void) */
+	SWITCH_TO_KERNEL_STACK
+	SAVE_ALL
+	mv	r0, sp				; pt_regs
+	bl	withdraw_debug_trap
+	ldi	r1, #0				; error_code
+	mv	r0, sp				; pt_regs
+	bl	do_debug_trap
+	bra	error_code
+
+
+/* Cache flushing handler */
+ENTRY(cache_flushing_handler)
+	.global	_flush_cache_all
+	/* void _flush_cache_all(void); */
+	SWITCH_TO_KERNEL_STACK
+	push	r0
+	push	r1
+	push	r2
+	push	r3
+	push	r4
+	push	r5
+	push	r6
+	push	r7
+	push	lr
+	bl	_flush_cache_all
+	pop	lr
+	pop	r7
+	pop	r6
+	pop	r5
+	pop	r4
+	pop	r3
+	pop	r2
+	pop	r1
+	pop	r0
+	rte
+
+.data
+ENTRY(sys_call_table)
+	.long sys_restart_syscall	/* 0  -  old "setup()" system call*/
+	.long sys_exit
+	.long sys_fork
+	.long sys_read
+	.long sys_write
+	.long sys_open			/* 5 */
+	.long sys_close
+	.long sys_waitpid
+	.long sys_creat
+	.long sys_link
+	.long sys_unlink		/* 10 */
+	.long sys_execve
+	.long sys_chdir
+	.long sys_time
+	.long sys_mknod
+	.long sys_chmod			/* 15 */
+	.long sys_ni_syscall		/* lchown16 syscall holder */
+	.long sys_ni_syscall		/* old break syscall holder */
+	.long sys_ni_syscall		/* old stat syscall holder */
+	.long sys_lseek
+	.long sys_getpid		/* 20 */
+	.long sys_mount
+	.long sys_oldumount
+	.long sys_ni_syscall		/* setuid16 syscall holder */
+	.long sys_ni_syscall		/* getuid16 syscall holder */
+	.long sys_stime			/* 25 */
+	.long sys_ptrace
+	.long sys_alarm
+	.long sys_ni_syscall		/* old fstat syscall holder */
+	.long sys_pause
+	.long sys_utime			/* 30 */
+	.long sys_ni_syscall		/* old stty syscall holder */
+	.long sys_cachectl		/* for M32R */ /* old gtty syscall holder */
+	.long sys_access
+	.long sys_ni_syscall		/* nice	syscall holder */
+	.long sys_ni_syscall		/* 35  -  old ftime syscall holder */
+	.long sys_sync
+	.long sys_kill
+	.long sys_rename
+	.long sys_mkdir
+	.long sys_rmdir			/* 40 */
+	.long sys_dup
+	.long sys_pipe
+	.long sys_times
+	.long sys_ni_syscall		/* old prof syscall holder */
+	.long sys_brk			/* 45 */
+	.long sys_ni_syscall		/* setgid16 syscall holder */
+	.long sys_getgid		/* will be unused */
+	.long sys_ni_syscall		/* signal syscall holder */
+	.long sys_ni_syscall		/* geteuid16  syscall holder */
+	.long sys_ni_syscall		/* 50 - getegid16 syscall holder */
+	.long sys_acct
+	.long sys_umount		/* recycled never used phys() */
+	.long sys_ni_syscall		/* old lock syscall holder */
+	.long sys_ioctl
+	.long sys_fcntl			/* 55 - will be unused */
+	.long sys_ni_syscall		/* mpx syscall holder */
+	.long sys_setpgid
+	.long sys_ni_syscall		/* old ulimit syscall holder */
+	.long sys_ni_syscall		/* sys_olduname */
+	.long sys_umask			/* 60 */
+	.long sys_chroot
+	.long sys_ustat
+	.long sys_dup2
+	.long sys_getppid
+	.long sys_getpgrp		/* 65 */
+	.long sys_setsid
+	.long sys_ni_syscall		/* sigaction syscall holder */
+	.long sys_ni_syscall		/* sgetmask syscall holder */
+	.long sys_ni_syscall		/* ssetmask syscall holder */
+	.long sys_ni_syscall		/* 70 - setreuid16 syscall holder */
+	.long sys_ni_syscall		/* setregid16 syscall holder */
+	.long sys_ni_syscall		/* sigsuspend syscall holder */
+	.long sys_ni_syscall		/* sigpending syscall holder */
+	.long sys_sethostname
+	.long sys_setrlimit		/* 75 */
+	.long sys_getrlimit/*will be unused*/
+	.long sys_getrusage
+	.long sys_gettimeofday
+	.long sys_settimeofday
+	.long sys_ni_syscall		/* 80 - getgroups16 syscall holder */
+	.long sys_ni_syscall		/* setgroups16 syscall holder */
+	.long sys_ni_syscall		/* sys_oldselect */
+	.long sys_symlink
+	.long sys_ni_syscall		/* old lstat syscall holder */
+	.long sys_readlink		/* 85 */
+	.long sys_uselib
+	.long sys_swapon
+	.long sys_reboot
+	.long sys_ni_syscall		/* readdir syscall holder */
+	.long sys_ni_syscall		/* 90 - old_mmap syscall holder */
+	.long sys_munmap
+	.long sys_truncate
+	.long sys_ftruncate
+	.long sys_fchmod
+	.long sys_ni_syscall		/* 95 - fchwon16  syscall holder */
+	.long sys_getpriority
+	.long sys_setpriority
+	.long sys_ni_syscall		/* old profil syscall holder */
+	.long sys_statfs
+	.long sys_fstatfs		/* 100 */
+	.long sys_ni_syscall		/* ioperm syscall holder */
+	.long sys_socketcall
+	.long sys_syslog
+	.long sys_setitimer
+	.long sys_getitimer		/* 105 */
+	.long sys_newstat
+	.long sys_newlstat
+	.long sys_newfstat
+	.long sys_ni_syscall		/* old uname syscall holder */
+	.long sys_ni_syscall		/* 110  -  iopl syscall holder */
+	.long sys_vhangup
+	.long sys_ni_syscall		/* idle syscall holder */
+	.long sys_ni_syscall		/* vm86old syscall holder */
+	.long sys_wait4
+	.long sys_swapoff		/* 115 */
+	.long sys_sysinfo
+	.long sys_ipc
+	.long sys_fsync
+	.long sys_ni_syscall		/* sigreturn syscall holder */
+	.long sys_clone			/* 120 */
+	.long sys_setdomainname
+	.long sys_newuname
+	.long sys_ni_syscall		/* modify_ldt syscall holder */
+	.long sys_adjtimex
+	.long sys_mprotect		/* 125 */
+	.long sys_ni_syscall		/* sigprocmask syscall holder */
+	.long sys_ni_syscall		/* create_module syscall holder */
+	.long sys_init_module
+	.long sys_delete_module
+	.long sys_ni_syscall		/* 130 - get_kernel_syms */
+	.long sys_quotactl
+	.long sys_getpgid
+	.long sys_fchdir
+	.long sys_bdflush
+	.long sys_sysfs			/* 135 */
+	.long sys_personality
+	.long sys_ni_syscall		/* afs_syscall syscall holder */
+	.long sys_ni_syscall		/* setfsuid16 syscall holder */
+	.long sys_ni_syscall		/* setfsgid16 syscall holder */
+	.long sys_llseek		/* 140 */
+	.long sys_getdents
+	.long sys_select
+	.long sys_flock
+	.long sys_msync
+	.long sys_readv			/* 145 */
+	.long sys_writev
+	.long sys_getsid
+	.long sys_fdatasync
+	.long sys_sysctl
+	.long sys_mlock			/* 150 */
+	.long sys_munlock
+	.long sys_mlockall
+	.long sys_munlockall
+	.long sys_sched_setparam
+	.long sys_sched_getparam	/* 155 */
+	.long sys_sched_setscheduler
+	.long sys_sched_getscheduler
+	.long sys_sched_yield
+	.long sys_sched_get_priority_max
+	.long sys_sched_get_priority_min	/* 160 */
+	.long sys_sched_rr_get_interval
+	.long sys_nanosleep
+	.long sys_mremap
+	.long sys_ni_syscall		/* setresuid16 syscall holder */
+	.long sys_ni_syscall		/* 165 - getresuid16 syscall holder */
+	.long sys_tas			/* vm86 syscall holder */
+	.long sys_ni_syscall		/* query_module syscall holder */
+	.long sys_poll
+	.long sys_nfsservctl
+	.long sys_setresgid		/* 170 */
+	.long sys_getresgid
+	.long sys_prctl
+	.long sys_rt_sigreturn
+	.long sys_rt_sigaction
+	.long sys_rt_sigprocmask	/* 175 */
+	.long sys_rt_sigpending
+	.long sys_rt_sigtimedwait
+	.long sys_rt_sigqueueinfo
+	.long sys_rt_sigsuspend
+	.long sys_pread64		/* 180 */
+	.long sys_pwrite64
+	.long sys_ni_syscall		/* chown16 syscall holder */
+	.long sys_getcwd
+	.long sys_capget
+	.long sys_capset		/* 185 */
+	.long sys_sigaltstack
+	.long sys_sendfile
+	.long sys_ni_syscall		/* streams1 */
+	.long sys_ni_syscall		/* streams2 */
+	.long sys_vfork			/* 190 */
+	.long sys_getrlimit
+	.long sys_mmap2
+	.long sys_truncate64
+	.long sys_ftruncate64
+	.long sys_stat64		/* 195 */
+	.long sys_lstat64
+	.long sys_fstat64
+	.long sys_lchown
+	.long sys_getuid
+	.long sys_getgid		/* 200 */
+	.long sys_geteuid
+	.long sys_getegid
+	.long sys_setreuid
+	.long sys_setregid
+	.long sys_getgroups		/* 205 */
+	.long sys_setgroups
+	.long sys_fchown
+	.long sys_setresuid
+	.long sys_getresuid
+	.long sys_setresgid		/* 210 */
+	.long sys_getresgid
+	.long sys_chown
+	.long sys_setuid
+	.long sys_setgid
+	.long sys_setfsuid		/* 215 */
+	.long sys_setfsgid
+	.long sys_pivot_root
+	.long sys_mincore
+	.long sys_madvise
+	.long sys_getdents64		/* 220 */
+	.long sys_fcntl64
+	.long sys_ni_syscall		/* reserved for TUX */
+	.long sys_ni_syscall		/* Reserved for Security */
+	.long sys_gettid
+	.long sys_readahead		/* 225 */
+	.long sys_setxattr
+	.long sys_lsetxattr
+	.long sys_fsetxattr
+	.long sys_getxattr
+	.long sys_lgetxattr		/* 230 */
+	.long sys_fgetxattr
+	.long sys_listxattr
+	.long sys_llistxattr
+	.long sys_flistxattr
+	.long sys_removexattr		/* 235 */
+	.long sys_lremovexattr
+	.long sys_fremovexattr
+	.long sys_tkill
+	.long sys_sendfile64
+	.long sys_futex			/* 240 */
+	.long sys_sched_setaffinity
+	.long sys_sched_getaffinity
+	.long sys_ni_syscall		/* reserved for "set_thread_area" system call */
+	.long sys_ni_syscall		/* reserved for "get_thread_area" system call */
+	.long sys_io_setup		/* 245 */
+	.long sys_io_destroy
+	.long sys_io_getevents
+	.long sys_io_submit
+	.long sys_io_cancel
+	.long sys_fadvise64		/* 250 */
+	.long sys_ni_syscall
+	.long sys_exit_group
+	.long sys_lookup_dcookie
+	.long sys_epoll_create
+	.long sys_epoll_ctl		/* 255 */
+	.long sys_epoll_wait
+ 	.long sys_remap_file_pages
+ 	.long sys_set_tid_address
+ 	.long sys_timer_create
+ 	.long sys_timer_settime		/* 260 */
+ 	.long sys_timer_gettime
+ 	.long sys_timer_getoverrun
+ 	.long sys_timer_delete
+ 	.long sys_clock_settime
+ 	.long sys_clock_gettime		/* 265 */
+ 	.long sys_clock_getres
+ 	.long sys_clock_nanosleep
+	.long sys_statfs64
+	.long sys_fstatfs64
+	.long sys_tgkill		/* 270 */
+	.long sys_utimes
+ 	.long sys_fadvise64_64
+	.long sys_ni_syscall		/* Reserved for sys_vserver */
+        .long sys_ni_syscall		/* Reserved for sys_mbind */
+        .long sys_ni_syscall		/* Reserved for sys_get_mempolicy */
+        .long sys_ni_syscall		/* Reserved for sys_set_mempolicy */
+        .long sys_mq_open
+        .long sys_mq_unlink
+        .long sys_mq_timedsend
+        .long sys_mq_timedreceive       /* 280 */
+        .long sys_mq_notify
+        .long sys_mq_getsetattr
+        .long sys_ni_syscall            /* reserved for kexec */
+	.long sys_waitid
+
+syscall_table_size=(.-sys_call_table)
+