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authorMichal Simek <monstr@monstr.eu>2009-03-27 14:25:20 +0100
committerMichal Simek <monstr@monstr.eu>2009-03-27 14:25:20 +0100
commit6d5af1a35f363d3bca7ecb4560102ff94f792186 (patch)
tree2f29b58ede496174da801b2d5d522f506814f98d /arch
parent2d43dab99a5387c9bac22fc92e88ae3754672e19 (diff)
downloadop-kernel-dev-6d5af1a35f363d3bca7ecb4560102ff94f792186.zip
op-kernel-dev-6d5af1a35f363d3bca7ecb4560102ff94f792186.tar.gz
microblaze_v8: assembler files head.S, entry-nommu.S, syscall_table.S
Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'arch')
-rw-r--r--arch/microblaze/kernel/entry-nommu.S596
-rw-r--r--arch/microblaze/kernel/head.S56
-rw-r--r--arch/microblaze/kernel/syscall_table.S365
3 files changed, 1017 insertions, 0 deletions
diff --git a/arch/microblaze/kernel/entry-nommu.S b/arch/microblaze/kernel/entry-nommu.S
new file mode 100644
index 0000000..f24b126
--- /dev/null
+++ b/arch/microblaze/kernel/entry-nommu.S
@@ -0,0 +1,596 @@
+/*
+ * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
+ * Copyright (C) 2007-2009 PetaLogix
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/linkage.h>
+#include <asm/thread_info.h>
+#include <asm/errno.h>
+#include <asm/entry.h>
+#include <asm/asm-offsets.h>
+#include <asm/registers.h>
+#include <asm/unistd.h>
+#include <asm/percpu.h>
+#include <asm/signal.h>
+
+#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
+ .macro disable_irq
+ msrclr r0, MSR_IE
+ .endm
+
+ .macro enable_irq
+ msrset r0, MSR_IE
+ .endm
+
+ .macro clear_bip
+ msrclr r0, MSR_BIP
+ .endm
+#else
+ .macro disable_irq
+ mfs r11, rmsr
+ andi r11, r11, ~MSR_IE
+ mts rmsr, r11
+ .endm
+
+ .macro enable_irq
+ mfs r11, rmsr
+ ori r11, r11, MSR_IE
+ mts rmsr, r11
+ .endm
+
+ .macro clear_bip
+ mfs r11, rmsr
+ andi r11, r11, ~MSR_BIP
+ mts rmsr, r11
+ .endm
+#endif
+
+ENTRY(_interrupt)
+ swi r1, r0, PER_CPU(ENTRY_SP) /* save the current sp */
+ swi r11, r0, PER_CPU(R11_SAVE) /* temporarily save r11 */
+ lwi r11, r0, PER_CPU(KM) /* load mode indicator */
+ beqid r11, 1f
+ nop
+ brid 2f /* jump over */
+ addik r1, r1, (-PT_SIZE) /* room for pt_regs (delay slot) */
+1: /* switch to kernel stack */
+ lwi r1, r0, PER_CPU(CURRENT_SAVE) /* get the saved current */
+ lwi r1, r1, TS_THREAD_INFO /* get the thread info */
+ /* calculate kernel stack pointer */
+ addik r1, r1, THREAD_SIZE - PT_SIZE
+2:
+ swi r11, r1, PT_MODE /* store the mode */
+ lwi r11, r0, PER_CPU(R11_SAVE) /* reload r11 */
+ swi r2, r1, PT_R2
+ swi r3, r1, PT_R3
+ swi r4, r1, PT_R4
+ swi r5, r1, PT_R5
+ swi r6, r1, PT_R6
+ swi r7, r1, PT_R7
+ swi r8, r1, PT_R8
+ swi r9, r1, PT_R9
+ swi r10, r1, PT_R10
+ swi r11, r1, PT_R11
+ swi r12, r1, PT_R12
+ swi r13, r1, PT_R13
+ swi r14, r1, PT_R14
+ swi r14, r1, PT_PC
+ swi r15, r1, PT_R15
+ swi r16, r1, PT_R16
+ swi r17, r1, PT_R17
+ swi r18, r1, PT_R18
+ swi r19, r1, PT_R19
+ swi r20, r1, PT_R20
+ swi r21, r1, PT_R21
+ swi r22, r1, PT_R22
+ swi r23, r1, PT_R23
+ swi r24, r1, PT_R24
+ swi r25, r1, PT_R25
+ swi r26, r1, PT_R26
+ swi r27, r1, PT_R27
+ swi r28, r1, PT_R28
+ swi r29, r1, PT_R29
+ swi r30, r1, PT_R30
+ swi r31, r1, PT_R31
+ /* special purpose registers */
+ mfs r11, rmsr
+ swi r11, r1, PT_MSR
+ mfs r11, rear
+ swi r11, r1, PT_EAR
+ mfs r11, resr
+ swi r11, r1, PT_ESR
+ mfs r11, rfsr
+ swi r11, r1, PT_FSR
+ /* reload original stack pointer and save it */
+ lwi r11, r0, PER_CPU(ENTRY_SP)
+ swi r11, r1, PT_R1
+ /* update mode indicator we are in kernel mode */
+ addik r11, r0, 1
+ swi r11, r0, PER_CPU(KM)
+ /* restore r31 */
+ lwi r31, r0, PER_CPU(CURRENT_SAVE)
+ /* prepare the link register, the argument and jump */
+ la r15, r0, ret_from_intr - 8
+ addk r6, r0, r15
+ braid do_IRQ
+ add r5, r0, r1
+
+ret_from_intr:
+ lwi r11, r1, PT_MODE
+ bneid r11, 3f
+
+ lwi r6, r31, TS_THREAD_INFO /* get thread info */
+ lwi r19, r6, TI_FLAGS /* get flags in thread info */
+ /* do an extra work if any bits are set */
+
+ andi r11, r19, _TIF_NEED_RESCHED
+ beqi r11, 1f
+ bralid r15, schedule
+ nop
+1: andi r11, r19, _TIF_SIGPENDING
+ beqid r11, no_intr_reshed
+ addk r5, r1, r0
+ addk r7, r0, r0
+ bralid r15, do_signal
+ addk r6, r0, r0
+
+no_intr_reshed:
+ /* save mode indicator */
+ lwi r11, r1, PT_MODE
+3:
+ swi r11, r0, PER_CPU(KM)
+
+ /* save r31 */
+ swi r31, r0, PER_CPU(CURRENT_SAVE)
+restore_context:
+ /* special purpose registers */
+ lwi r11, r1, PT_FSR
+ mts rfsr, r11
+ lwi r11, r1, PT_ESR
+ mts resr, r11
+ lwi r11, r1, PT_EAR
+ mts rear, r11
+ lwi r11, r1, PT_MSR
+ mts rmsr, r11
+
+ lwi r31, r1, PT_R31
+ lwi r30, r1, PT_R30
+ lwi r29, r1, PT_R29
+ lwi r28, r1, PT_R28
+ lwi r27, r1, PT_R27
+ lwi r26, r1, PT_R26
+ lwi r25, r1, PT_R25
+ lwi r24, r1, PT_R24
+ lwi r23, r1, PT_R23
+ lwi r22, r1, PT_R22
+ lwi r21, r1, PT_R21
+ lwi r20, r1, PT_R20
+ lwi r19, r1, PT_R19
+ lwi r18, r1, PT_R18
+ lwi r17, r1, PT_R17
+ lwi r16, r1, PT_R16
+ lwi r15, r1, PT_R15
+ lwi r14, r1, PT_PC
+ lwi r13, r1, PT_R13
+ lwi r12, r1, PT_R12
+ lwi r11, r1, PT_R11
+ lwi r10, r1, PT_R10
+ lwi r9, r1, PT_R9
+ lwi r8, r1, PT_R8
+ lwi r7, r1, PT_R7
+ lwi r6, r1, PT_R6
+ lwi r5, r1, PT_R5
+ lwi r4, r1, PT_R4
+ lwi r3, r1, PT_R3
+ lwi r2, r1, PT_R2
+ lwi r1, r1, PT_R1
+ rtid r14, 0
+ nop
+
+ENTRY(_reset)
+ brai 0;
+
+ENTRY(_user_exception)
+ swi r1, r0, PER_CPU(ENTRY_SP) /* save the current sp */
+ swi r11, r0, PER_CPU(R11_SAVE) /* temporarily save r11 */
+ lwi r11, r0, PER_CPU(KM) /* load mode indicator */
+ beqid r11, 1f /* Already in kernel mode? */
+ nop
+ brid 2f /* jump over */
+ addik r1, r1, (-PT_SIZE) /* Room for pt_regs (delay slot) */
+1: /* Switch to kernel stack */
+ lwi r1, r0, PER_CPU(CURRENT_SAVE) /* get the saved current */
+ lwi r1, r1, TS_THREAD_INFO /* get the thread info */
+ /* calculate kernel stack pointer */
+ addik r1, r1, THREAD_SIZE - PT_SIZE
+ swi r11, r0, PER_CPU(R11_SAVE) /* temporarily save r11 */
+ lwi r11, r0, PER_CPU(KM) /* load mode indicator */
+2:
+ swi r11, r1, PT_MODE /* store the mode */
+ lwi r11, r0, PER_CPU(R11_SAVE) /* reload r11 */
+ /* save them on stack */
+ swi r2, r1, PT_R2
+ swi r3, r1, PT_R3 /* r3: _always_ in clobber list; see unistd.h */
+ swi r4, r1, PT_R4 /* r4: _always_ in clobber list; see unistd.h */
+ swi r5, r1, PT_R5
+ swi r6, r1, PT_R6
+ swi r7, r1, PT_R7
+ swi r8, r1, PT_R8
+ swi r9, r1, PT_R9
+ swi r10, r1, PT_R10
+ swi r11, r1, PT_R11
+ /* r12: _always_ in clobber list; see unistd.h */
+ swi r12, r1, PT_R12
+ swi r13, r1, PT_R13
+ /* r14: _always_ in clobber list; see unistd.h */
+ swi r14, r1, PT_R14
+ /* but we want to return to the next inst. */
+ addik r14, r14, 0x4
+ swi r14, r1, PT_PC /* increment by 4 and store in pc */
+ swi r15, r1, PT_R15
+ swi r16, r1, PT_R16
+ swi r17, r1, PT_R17
+ swi r18, r1, PT_R18
+ swi r19, r1, PT_R19
+ swi r20, r1, PT_R20
+ swi r21, r1, PT_R21
+ swi r22, r1, PT_R22
+ swi r23, r1, PT_R23
+ swi r24, r1, PT_R24
+ swi r25, r1, PT_R25
+ swi r26, r1, PT_R26
+ swi r27, r1, PT_R27
+ swi r28, r1, PT_R28
+ swi r29, r1, PT_R29
+ swi r30, r1, PT_R30
+ swi r31, r1, PT_R31
+
+ disable_irq
+ nop /* make sure IE bit is in effect */
+ clear_bip /* once IE is in effect it is safe to clear BIP */
+ nop
+
+ /* special purpose registers */
+ mfs r11, rmsr
+ swi r11, r1, PT_MSR
+ mfs r11, rear
+ swi r11, r1, PT_EAR
+ mfs r11, resr
+ swi r11, r1, PT_ESR
+ mfs r11, rfsr
+ swi r11, r1, PT_FSR
+ /* reload original stack pointer and save it */
+ lwi r11, r0, PER_CPU(ENTRY_SP)
+ swi r11, r1, PT_R1
+ /* update mode indicator we are in kernel mode */
+ addik r11, r0, 1
+ swi r11, r0, PER_CPU(KM)
+ /* restore r31 */
+ lwi r31, r0, PER_CPU(CURRENT_SAVE)
+ /* re-enable interrupts now we are in kernel mode */
+ enable_irq
+
+ /* See if the system call number is valid. */
+ addi r11, r12, -__NR_syscalls
+ bgei r11, 1f /* return to user if not valid */
+ /* Figure out which function to use for this system call. */
+ /* Note Microblaze barrel shift is optional, so don't rely on it */
+ add r12, r12, r12 /* convert num -> ptr */
+ add r12, r12, r12
+ lwi r12, r12, sys_call_table /* Get function pointer */
+ la r15, r0, ret_to_user-8 /* set return address */
+ bra r12 /* Make the system call. */
+ bri 0 /* won't reach here */
+1:
+ brid ret_to_user /* jump to syscall epilogue */
+ addi r3, r0, -ENOSYS /* set errno in delay slot */
+
+/*
+ * Debug traps are like a system call, but entered via brki r14, 0x60
+ * All we need to do is send the SIGTRAP signal to current, ptrace and do_signal
+ * will handle the rest
+ */
+ENTRY(_debug_exception)
+ swi r1, r0, PER_CPU(ENTRY_SP) /* save the current sp */
+ lwi r1, r0, PER_CPU(CURRENT_SAVE) /* get the saved current */
+ lwi r1, r1, TS_THREAD_INFO /* get the thread info */
+ addik r1, r1, THREAD_SIZE - PT_SIZE /* get the kernel stack */
+ swi r11, r0, PER_CPU(R11_SAVE) /* temporarily save r11 */
+ lwi r11, r0, PER_CPU(KM) /* load mode indicator */
+//save_context:
+ swi r11, r1, PT_MODE /* store the mode */
+ lwi r11, r0, PER_CPU(R11_SAVE) /* reload r11 */
+ /* save them on stack */
+ swi r2, r1, PT_R2
+ swi r3, r1, PT_R3 /* r3: _always_ in clobber list; see unistd.h */
+ swi r4, r1, PT_R4 /* r4: _always_ in clobber list; see unistd.h */
+ swi r5, r1, PT_R5
+ swi r6, r1, PT_R6
+ swi r7, r1, PT_R7
+ swi r8, r1, PT_R8
+ swi r9, r1, PT_R9
+ swi r10, r1, PT_R10
+ swi r11, r1, PT_R11
+ /* r12: _always_ in clobber list; see unistd.h */
+ swi r12, r1, PT_R12
+ swi r13, r1, PT_R13
+ /* r14: _always_ in clobber list; see unistd.h */
+ swi r14, r1, PT_R14
+ swi r14, r1, PT_PC /* Will return to interrupted instruction */
+ swi r15, r1, PT_R15
+ swi r16, r1, PT_R16
+ swi r17, r1, PT_R17
+ swi r18, r1, PT_R18
+ swi r19, r1, PT_R19
+ swi r20, r1, PT_R20
+ swi r21, r1, PT_R21
+ swi r22, r1, PT_R22
+ swi r23, r1, PT_R23
+ swi r24, r1, PT_R24
+ swi r25, r1, PT_R25
+ swi r26, r1, PT_R26
+ swi r27, r1, PT_R27
+ swi r28, r1, PT_R28
+ swi r29, r1, PT_R29
+ swi r30, r1, PT_R30
+ swi r31, r1, PT_R31
+
+ disable_irq
+ nop /* make sure IE bit is in effect */
+ clear_bip /* once IE is in effect it is safe to clear BIP */
+ nop
+
+ /* special purpose registers */
+ mfs r11, rmsr
+ swi r11, r1, PT_MSR
+ mfs r11, rear
+ swi r11, r1, PT_EAR
+ mfs r11, resr
+ swi r11, r1, PT_ESR
+ mfs r11, rfsr
+ swi r11, r1, PT_FSR
+ /* reload original stack pointer and save it */
+ lwi r11, r0, PER_CPU(ENTRY_SP)
+ swi r11, r1, PT_R1
+ /* update mode indicator we are in kernel mode */
+ addik r11, r0, 1
+ swi r11, r0, PER_CPU(KM)
+ /* restore r31 */
+ lwi r31, r0, PER_CPU(CURRENT_SAVE)
+ /* re-enable interrupts now we are in kernel mode */
+ enable_irq
+
+ addi r5, r0, SIGTRAP /* sending the trap signal */
+ add r6, r0, r31 /* to current */
+ bralid r15, send_sig
+ add r7, r0, r0 /* 3rd param zero */
+
+ /* Restore r3/r4 to work around how ret_to_user works */
+ lwi r3, r1, PT_R3
+ lwi r4, r1, PT_R4
+ bri ret_to_user
+
+ENTRY(_break)
+ bri 0
+
+/* struct task_struct *_switch_to(struct thread_info *prev,
+ struct thread_info *next); */
+ENTRY(_switch_to)
+ /* prepare return value */
+ addk r3, r0, r31
+
+ /* save registers in cpu_context */
+ /* use r11 and r12, volatile registers, as temp register */
+ addik r11, r5, TI_CPU_CONTEXT
+ swi r1, r11, CC_R1
+ swi r2, r11, CC_R2
+ /* skip volatile registers.
+ * they are saved on stack when we jumped to _switch_to() */
+ /* dedicated registers */
+ swi r13, r11, CC_R13
+ swi r14, r11, CC_R14
+ swi r15, r11, CC_R15
+ swi r16, r11, CC_R16
+ swi r17, r11, CC_R17
+ swi r18, r11, CC_R18
+ /* save non-volatile registers */
+ swi r19, r11, CC_R19
+ swi r20, r11, CC_R20
+ swi r21, r11, CC_R21
+ swi r22, r11, CC_R22
+ swi r23, r11, CC_R23
+ swi r24, r11, CC_R24
+ swi r25, r11, CC_R25
+ swi r26, r11, CC_R26
+ swi r27, r11, CC_R27
+ swi r28, r11, CC_R28
+ swi r29, r11, CC_R29
+ swi r30, r11, CC_R30
+ /* special purpose registers */
+ mfs r12, rmsr
+ swi r12, r11, CC_MSR
+ mfs r12, rear
+ swi r12, r11, CC_EAR
+ mfs r12, resr
+ swi r12, r11, CC_ESR
+ mfs r12, rfsr
+ swi r12, r11, CC_FSR
+
+ /* update r31, the current */
+ lwi r31, r6, TI_TASK
+ swi r31, r0, PER_CPU(CURRENT_SAVE)
+
+ /* get new process' cpu context and restore */
+ addik r11, r6, TI_CPU_CONTEXT
+
+ /* special purpose registers */
+ lwi r12, r11, CC_FSR
+ mts rfsr, r12
+ lwi r12, r11, CC_ESR
+ mts resr, r12
+ lwi r12, r11, CC_EAR
+ mts rear, r12
+ lwi r12, r11, CC_MSR
+ mts rmsr, r12
+ /* non-volatile registers */
+ lwi r30, r11, CC_R30
+ lwi r29, r11, CC_R29
+ lwi r28, r11, CC_R28
+ lwi r27, r11, CC_R27
+ lwi r26, r11, CC_R26
+ lwi r25, r11, CC_R25
+ lwi r24, r11, CC_R24
+ lwi r23, r11, CC_R23
+ lwi r22, r11, CC_R22
+ lwi r21, r11, CC_R21
+ lwi r20, r11, CC_R20
+ lwi r19, r11, CC_R19
+ /* dedicated registers */
+ lwi r18, r11, CC_R18
+ lwi r17, r11, CC_R17
+ lwi r16, r11, CC_R16
+ lwi r15, r11, CC_R15
+ lwi r14, r11, CC_R14
+ lwi r13, r11, CC_R13
+ /* skip volatile registers */
+ lwi r2, r11, CC_R2
+ lwi r1, r11, CC_R1
+
+ rtsd r15, 8
+ nop
+
+ENTRY(ret_from_fork)
+ addk r5, r0, r3
+ addk r6, r0, r1
+ brlid r15, schedule_tail
+ nop
+ swi r31, r1, PT_R31 /* save r31 in user context. */
+ /* will soon be restored to r31 in ret_to_user */
+ addk r3, r0, r0
+ brid ret_to_user
+ nop
+
+work_pending:
+ andi r11, r19, _TIF_NEED_RESCHED
+ beqi r11, 1f
+ bralid r15, schedule
+ nop
+1: andi r11, r19, _TIF_SIGPENDING
+ beqi r11, no_work_pending
+ addk r5, r1, r0
+ addik r7, r0, 1
+ bralid r15, do_signal
+ addk r6, r0, r0
+ bri no_work_pending
+
+ENTRY(ret_to_user)
+ disable_irq
+
+ swi r4, r1, PT_R4 /* return val */
+ swi r3, r1, PT_R3 /* return val */
+
+ lwi r6, r31, TS_THREAD_INFO /* get thread info */
+ lwi r19, r6, TI_FLAGS /* get flags in thread info */
+ bnei r19, work_pending /* do an extra work if any bits are set */
+no_work_pending:
+ disable_irq
+
+ /* save r31 */
+ swi r31, r0, PER_CPU(CURRENT_SAVE)
+ /* save mode indicator */
+ lwi r18, r1, PT_MODE
+ swi r18, r0, PER_CPU(KM)
+//restore_context:
+ /* special purpose registers */
+ lwi r18, r1, PT_FSR
+ mts rfsr, r18
+ lwi r18, r1, PT_ESR
+ mts resr, r18
+ lwi r18, r1, PT_EAR
+ mts rear, r18
+ lwi r18, r1, PT_MSR
+ mts rmsr, r18
+
+ lwi r31, r1, PT_R31
+ lwi r30, r1, PT_R30
+ lwi r29, r1, PT_R29
+ lwi r28, r1, PT_R28
+ lwi r27, r1, PT_R27
+ lwi r26, r1, PT_R26
+ lwi r25, r1, PT_R25
+ lwi r24, r1, PT_R24
+ lwi r23, r1, PT_R23
+ lwi r22, r1, PT_R22
+ lwi r21, r1, PT_R21
+ lwi r20, r1, PT_R20
+ lwi r19, r1, PT_R19
+ lwi r18, r1, PT_R18
+ lwi r17, r1, PT_R17
+ lwi r16, r1, PT_R16
+ lwi r15, r1, PT_R15
+ lwi r14, r1, PT_PC
+ lwi r13, r1, PT_R13
+ lwi r12, r1, PT_R12
+ lwi r11, r1, PT_R11
+ lwi r10, r1, PT_R10
+ lwi r9, r1, PT_R9
+ lwi r8, r1, PT_R8
+ lwi r7, r1, PT_R7
+ lwi r6, r1, PT_R6
+ lwi r5, r1, PT_R5
+ lwi r4, r1, PT_R4 /* return val */
+ lwi r3, r1, PT_R3 /* return val */
+ lwi r2, r1, PT_R2
+ lwi r1, r1, PT_R1
+
+ rtid r14, 0
+ nop
+
+sys_vfork_wrapper:
+ brid sys_vfork
+ addk r5, r1, r0
+
+sys_clone_wrapper:
+ brid sys_clone
+ addk r7, r1, r0
+
+sys_execve_wrapper:
+ brid sys_execve
+ addk r8, r1, r0
+
+sys_sigreturn_wrapper:
+ brid sys_sigreturn
+ addk r5, r1, r0
+
+sys_rt_sigreturn_wrapper:
+ brid sys_rt_sigreturn
+ addk r5, r1, r0
+
+sys_sigsuspend_wrapper:
+ brid sys_rt_sigsuspend
+ addk r6, r1, r0
+
+sys_rt_sigsuspend_wrapper:
+ brid sys_rt_sigsuspend
+ addk r7, r1, r0
+
+ /* Interrupt vector table */
+ .section .init.ivt, "ax"
+ .org 0x0
+ brai _reset
+ brai _user_exception
+ brai _interrupt
+ brai _break
+ brai _hw_exception_handler
+ .org 0x60
+ brai _debug_exception
+
+.section .rodata,"a"
+#include "syscall_table.S"
+
+syscall_table_size=(.-sys_call_table)
diff --git a/arch/microblaze/kernel/head.S b/arch/microblaze/kernel/head.S
new file mode 100644
index 0000000..319dc35
--- /dev/null
+++ b/arch/microblaze/kernel/head.S
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
+ * Copyright (C) 2007-2009 PetaLogix
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/linkage.h>
+#include <asm/thread_info.h>
+#include <asm/page.h>
+
+ .text
+ENTRY(_start)
+ mfs r1, rmsr
+ andi r1, r1, ~2
+ mts rmsr, r1
+
+/* save fdt to kernel location */
+/* r7 stores pointer to fdt blob */
+ beqi r7, no_fdt_arg
+ or r11, r0, r0 /* incremment */
+ ori r4, r0, TOPHYS(_fdt_start) /* save bram context */
+ ori r3, r0, (0x4000 - 4)
+_copy_fdt:
+ lw r12, r7, r11 /* r12 = r7 + r11 */
+ sw r12, r4, r11 /* addr[r4 + r11] = r12 */
+ addik r11, r11, 4 /* increment counting */
+ bgtid r3, _copy_fdt /* loop for all entries */
+ addik r3, r3, -4 /* descrement loop */
+no_fdt_arg:
+
+ /* Initialize small data anchors */
+ la r13, r0, _KERNEL_SDA_BASE_
+ la r2, r0, _KERNEL_SDA2_BASE_
+
+ /* Initialize stack pointer */
+ la r1, r0, init_thread_union + THREAD_SIZE - 4
+
+ /* Initialize r31 with current task address */
+ la r31, r0, init_task
+
+ /*
+ * Call platform dependent initialize function.
+ * Please see $(ARCH)/mach-$(SUBARCH)/setup.c for
+ * the function.
+ */
+ la r8, r0, machine_early_init
+ brald r15, r8
+ nop
+
+ la r15, r0, machine_halt
+ braid start_kernel
+ nop
diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S
new file mode 100644
index 0000000..529b0db
--- /dev/null
+++ b/arch/microblaze/kernel/syscall_table.S
@@ -0,0 +1,365 @@
+ENTRY(sys_call_table)
+ .long sys_restart_syscall /* 0 - old "setup()" system call,
+ * used for restarting */
+ .long sys_exit
+ .long sys_ni_syscall /* was 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_wrapper
+ .long sys_chdir
+ .long sys_time
+ .long sys_mknod
+ .long sys_chmod /* 15 */
+ .long sys_lchown
+ .long sys_ni_syscall /* old break syscall holder */
+ .long sys_ni_syscall /* old stat */
+ .long sys_lseek
+ .long sys_getpid /* 20 */
+ .long sys_mount
+ .long sys_oldumount
+ .long sys_setuid
+ .long sys_getuid
+ .long sys_stime /* 25 */
+ .long sys_ptrace
+ .long sys_alarm
+ .long sys_ni_syscall /* oldfstat */
+ .long sys_pause
+ .long sys_utime /* 30 */
+ .long sys_ni_syscall /* old stty syscall holder */
+ .long sys_ni_syscall /* old gtty syscall holder */
+ .long sys_access
+ .long sys_nice
+ .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_setgid
+ .long sys_getgid
+ .long sys_signal
+ .long sys_geteuid
+ .long sys_getegid /* 50 */
+ .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 */
+ .long sys_ni_syscall /* old mpx syscall holder */
+ .long sys_setpgid
+ .long sys_ni_syscall /* old ulimit syscall holder */
+ .long sys_ni_syscall /* 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_sigaction
+ .long sys_sgetmask
+ .long sys_ssetmask
+ .long sys_setreuid /* 70 */
+ .long sys_setregid
+ .long sys_sigsuspend_wrapper
+ .long sys_sigpending
+ .long sys_sethostname
+ .long sys_setrlimit /* 75 */
+ .long sys_ni_syscall /* old_getrlimit */
+ .long sys_getrusage
+ .long sys_gettimeofday
+ .long sys_settimeofday
+ .long sys_getgroups /* 80 */
+ .long sys_setgroups
+ .long sys_ni_syscall /* old_select */
+ .long sys_symlink
+ .long sys_ni_syscall /* oldlstat */
+ .long sys_readlink /* 85 */
+ .long sys_uselib
+ .long sys_swapon
+ .long sys_reboot
+ .long sys_ni_syscall /* old_readdir */
+ .long sys_mmap /* 90 */ /* old_mmap */
+ .long sys_munmap
+ .long sys_truncate
+ .long sys_ftruncate
+ .long sys_fchmod
+ .long sys_fchown /* 95 */
+ .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 */
+ .long sys_socketcall
+ .long sys_syslog /* operation with system console */
+ .long sys_setitimer
+ .long sys_getitimer /* 105 */
+ .long sys_newstat
+ .long sys_newlstat
+ .long sys_newfstat
+ .long sys_ni_syscall /* uname */
+ .long sys_ni_syscall /* 110 */ /* iopl */
+ .long sys_vhangup
+ .long sys_ni_syscall /* old "idle" system call */
+ .long sys_ni_syscall /* old sys_vm86old */
+ .long sys_wait4
+ .long sys_swapoff /* 115 */
+ .long sys_sysinfo
+ .long sys_ipc
+ .long sys_fsync
+ .long sys_sigreturn_wrapper
+ .long sys_clone_wrapper /* 120 */
+ .long sys_setdomainname
+ .long sys_newuname
+ .long sys_ni_syscall /* modify_ldt */
+ .long sys_adjtimex
+ .long sys_mprotect /* 125: sys_mprotect */
+ .long sys_sigprocmask
+ .long sys_ni_syscall /* old "create_module" */
+ .long sys_init_module
+ .long sys_delete_module
+ .long sys_ni_syscall /* 130: old "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 /* reserved for afs_syscall */
+ .long sys_setfsuid
+ .long sys_setfsgid
+ .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: sys_mlock */
+ .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_setresuid
+ .long sys_getresuid /* 165 */
+ .long sys_ni_syscall /* sys_vm86 */
+ .long sys_ni_syscall /* Old sys_query_module */
+ .long sys_poll
+ .long sys_nfsservctl
+ .long sys_setresgid /* 170 */
+ .long sys_getresgid
+ .long sys_prctl
+ .long sys_rt_sigreturn_wrapper
+ .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_wrapper
+ .long sys_pread64 /* 180 */
+ .long sys_pwrite64
+ .long sys_chown
+ .long sys_getcwd
+ .long sys_capget
+ .long sys_capset /* 185 */
+ .long sys_ni_syscall /* sigaltstack */
+ .long sys_sendfile
+ .long sys_ni_syscall /* reserved for streams1 */
+ .long sys_ni_syscall /* reserved for streams2 */
+ .long sys_vfork_wrapper /* 190 */
+ .long sys_getrlimit
+ .long sys_mmap2 /* 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
+ .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 /* set_thread_area */
+ .long sys_ni_syscall /* get_thread_area */
+ .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 /* sys_vserver */
+ .long sys_mbind
+ .long sys_get_mempolicy
+ .long 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_kexec_load
+ .long sys_waitid
+ .long sys_ni_syscall /* 285 */ /* available */
+ .long sys_add_key
+ .long sys_request_key
+ .long sys_keyctl
+ .long sys_ioprio_set
+ .long sys_ioprio_get /* 290 */
+ .long sys_inotify_init
+ .long sys_inotify_add_watch
+ .long sys_inotify_rm_watch
+ .long sys_ni_syscall /* sys_migrate_pages */
+ .long sys_openat /* 295 */
+ .long sys_mkdirat
+ .long sys_mknodat
+ .long sys_fchownat
+ .long sys_ni_syscall
+ .long sys_fstatat64 /* 300 */
+ .long sys_unlinkat
+ .long sys_renameat
+ .long sys_linkat
+ .long sys_symlinkat
+ .long sys_readlinkat /* 305 */
+ .long sys_fchmodat
+ .long sys_faccessat
+ .long sys_ni_syscall /* pselect6 */
+ .long sys_ni_syscall /* sys_ppoll */
+ .long sys_unshare /* 310 */
+ .long sys_set_robust_list
+ .long sys_get_robust_list
+ .long sys_splice
+ .long sys_sync_file_range
+ .long sys_tee /* 315 */
+ .long sys_vmsplice
+ .long sys_move_pages
+ .long sys_getcpu
+ .long sys_epoll_pwait
+ .long sys_utimensat /* 320 */
+ .long sys_signalfd
+ .long sys_timerfd_create
+ .long sys_eventfd
+ .long sys_fallocate
+ .long sys_semtimedop /* 325 */
+ .long sys_timerfd_settime
+ .long sys_timerfd_gettime
+ .long sys_semctl
+ .long sys_semget
+ .long sys_semop /* 330 */
+ .long sys_msgctl
+ .long sys_msgget
+ .long sys_msgrcv
+ .long sys_msgsnd
+ .long sys_shmat /* 335 */
+ .long sys_shmctl
+ .long sys_shmdt
+ .long sys_shmget
+ .long sys_signalfd4 /* new syscall */
+ .long sys_eventfd2 /* 340 */
+ .long sys_epoll_create1
+ .long sys_dup3
+ .long sys_pipe2
+ .long sys_inotify_init1
+ .long sys_socket /* 345 */
+ .long sys_socketpair
+ .long sys_bind
+ .long sys_listen
+ .long sys_accept
+ .long sys_connect /* 350 */
+ .long sys_getsockname
+ .long sys_getpeername
+ .long sys_sendto
+ .long sys_send
+ .long sys_recvfrom /* 355 */
+ .long sys_recv
+ .long sys_setsockopt
+ .long sys_getsockopt
+ .long sys_shutdown
+ .long sys_sendmsg /* 360 */
+ .long sys_recvmsg
+ .long sys_ni_syscall
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