forked from luck/tmp_suning_uos_patched
1da177e4c3
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!
1001 lines
26 KiB
ArmAsm
1001 lines
26 KiB
ArmAsm
/*
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* linux/arch/m32r/kernel/entry.S
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*
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* Copyright (c) 2001, 2002 Hirokazu Takata, Hitoshi Yamamoto, H. Kondo
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* Copyright (c) 2003 Hitoshi Yamamoto
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* Copyright (c) 2004 Hirokazu Takata <takata at linux-m32r.org>
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*
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* Taken from i386 version.
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* Copyright (C) 1991, 1992 Linus Torvalds
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*/
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/*
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* entry.S contains the system-call and fault low-level handling routines.
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* This also contains the timer-interrupt handler, as well as all interrupts
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* and faults that can result in a task-switch.
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*
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* NOTE: This code handles signal-recognition, which happens every time
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* after a timer-interrupt and after each system call.
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*
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* Stack layout in 'ret_from_system_call':
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* ptrace needs to have all regs on the stack.
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* if the order here is changed, it needs to be
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* updated in fork.c:copy_process, signal.c:do_signal,
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* ptrace.c and ptrace.h
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*
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* M32Rx/M32R2 M32R
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* @(sp) - r4 ditto
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* @(0x04,sp) - r5 ditto
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* @(0x08,sp) - r6 ditto
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* @(0x0c,sp) - *pt_regs ditto
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* @(0x10,sp) - r0 ditto
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* @(0x14,sp) - r1 ditto
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* @(0x18,sp) - r2 ditto
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* @(0x1c,sp) - r3 ditto
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* @(0x20,sp) - r7 ditto
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* @(0x24,sp) - r8 ditto
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* @(0x28,sp) - r9 ditto
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* @(0x2c,sp) - r10 ditto
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* @(0x30,sp) - r11 ditto
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* @(0x34,sp) - r12 ditto
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* @(0x38,sp) - syscall_nr ditto
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* @(0x3c,sp) - acc0h @(0x3c,sp) - acch
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* @(0x40,sp) - acc0l @(0x40,sp) - accl
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* @(0x44,sp) - acc1h @(0x44,sp) - psw
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* @(0x48,sp) - acc1l @(0x48,sp) - bpc
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* @(0x4c,sp) - psw @(0x4c,sp) - bbpsw
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* @(0x50,sp) - bpc @(0x50,sp) - bbpc
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* @(0x54,sp) - bbpsw @(0x54,sp) - spu (cr3)
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* @(0x58,sp) - bbpc @(0x58,sp) - fp (r13)
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* @(0x5c,sp) - spu (cr3) @(0x5c,sp) - lr (r14)
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* @(0x60,sp) - fp (r13) @(0x60,sp) - spi (cr12)
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* @(0x64,sp) - lr (r14) @(0x64,sp) - orig_r0
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* @(0x68,sp) - spi (cr2)
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* @(0x6c,sp) - orig_r0
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*
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*/
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#include <linux/config.h>
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#include <linux/linkage.h>
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#include <asm/irq.h>
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#include <asm/unistd.h>
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#include <asm/assembler.h>
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#include <asm/thread_info.h>
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#include <asm/errno.h>
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#include <asm/segment.h>
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#include <asm/smp.h>
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#include <asm/page.h>
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#include <asm/m32r.h>
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#include <asm/mmu_context.h>
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#if !defined(CONFIG_MMU)
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#define sys_madvise sys_ni_syscall
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#define sys_readahead sys_ni_syscall
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#define sys_mprotect sys_ni_syscall
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#define sys_msync sys_ni_syscall
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#define sys_mlock sys_ni_syscall
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#define sys_munlock sys_ni_syscall
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#define sys_mlockall sys_ni_syscall
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#define sys_munlockall sys_ni_syscall
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#define sys_mremap sys_ni_syscall
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#define sys_mincore sys_ni_syscall
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#define sys_remap_file_pages sys_ni_syscall
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#endif /* CONFIG_MMU */
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#define R4(reg) @reg
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#define R5(reg) @(0x04,reg)
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#define R6(reg) @(0x08,reg)
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#define PTREGS(reg) @(0x0C,reg)
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#define R0(reg) @(0x10,reg)
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#define R1(reg) @(0x14,reg)
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#define R2(reg) @(0x18,reg)
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#define R3(reg) @(0x1C,reg)
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#define R7(reg) @(0x20,reg)
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#define R8(reg) @(0x24,reg)
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#define R9(reg) @(0x28,reg)
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#define R10(reg) @(0x2C,reg)
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#define R11(reg) @(0x30,reg)
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#define R12(reg) @(0x34,reg)
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#define SYSCALL_NR(reg) @(0x38,reg)
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#if defined(CONFIG_ISA_M32R2) && defined(CONFIG_ISA_DSP_LEVEL2)
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#define ACC0H(reg) @(0x3C,reg)
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#define ACC0L(reg) @(0x40,reg)
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#define ACC1H(reg) @(0x44,reg)
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#define ACC1L(reg) @(0x48,reg)
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#define PSW(reg) @(0x4C,reg)
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#define BPC(reg) @(0x50,reg)
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#define BBPSW(reg) @(0x54,reg)
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#define BBPC(reg) @(0x58,reg)
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#define SPU(reg) @(0x5C,reg)
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#define FP(reg) @(0x60,reg) /* FP = R13 */
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#define LR(reg) @(0x64,reg)
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#define SP(reg) @(0x68,reg)
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#define ORIG_R0(reg) @(0x6C,reg)
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#elif defined(CONFIG_ISA_M32R2) || defined(CONFIG_ISA_M32R)
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#define ACCH(reg) @(0x3C,reg)
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#define ACCL(reg) @(0x40,reg)
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#define PSW(reg) @(0x44,reg)
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#define BPC(reg) @(0x48,reg)
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#define BBPSW(reg) @(0x4C,reg)
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#define BBPC(reg) @(0x50,reg)
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#define SPU(reg) @(0x54,reg)
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#define FP(reg) @(0x58,reg) /* FP = R13 */
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#define LR(reg) @(0x5C,reg)
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#define SP(reg) @(0x60,reg)
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#define ORIG_R0(reg) @(0x64,reg)
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#else
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#error unknown isa configuration
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#endif
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CF_MASK = 0x00000001
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TF_MASK = 0x00000100
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IF_MASK = 0x00000200
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DF_MASK = 0x00000400
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NT_MASK = 0x00004000
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VM_MASK = 0x00020000
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#ifdef CONFIG_PREEMPT
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#define preempt_stop(x) CLI(x)
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#else
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#define preempt_stop(x)
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#define resume_kernel restore_all
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#endif
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ENTRY(ret_from_fork)
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ld r0, @sp+
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bl schedule_tail
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GET_THREAD_INFO(r8)
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bra syscall_exit
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/*
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* Return to user mode is not as complex as all this looks,
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* but we want the default path for a system call return to
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* go as quickly as possible which is why some of this is
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* less clear than it otherwise should be.
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*/
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; userspace resumption stub bypassing syscall exit tracing
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ALIGN
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ret_from_exception:
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preempt_stop(r4)
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ret_from_intr:
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ld r4, PSW(sp)
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#ifdef CONFIG_ISA_M32R2
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and3 r4, r4, #0x8800 ; check BSM and BPM bits
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#else
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and3 r4, r4, #0x8000 ; check BSM bit
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#endif
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beqz r4, resume_kernel
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ENTRY(resume_userspace)
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CLI(r4) ; make sure we don't miss an interrupt
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; setting need_resched or sigpending
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; between sampling and the iret
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GET_THREAD_INFO(r8)
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ld r9, @(TI_FLAGS, r8)
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and3 r4, r9, #_TIF_WORK_MASK ; is there any work to be done on
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; int/exception return?
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bnez r4, work_pending
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bra restore_all
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#ifdef CONFIG_PREEMPT
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ENTRY(resume_kernel)
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GET_THREAD_INFO(r8)
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ld r9, @(TI_PRE_COUNT, r8) ; non-zero preempt_count ?
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bnez r9, restore_all
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need_resched:
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ld r9, @(TI_FLAGS, r8) ; need_resched set ?
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and3 r4, r9, #_TIF_NEED_RESCHED
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beqz r4, restore_all
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ld r4, PSW(sp) ; interrupts off (exception path) ?
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and3 r4, r4, #0x4000
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beqz r4, restore_all
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LDIMM (r4, PREEMPT_ACTIVE)
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st r4, @(TI_PRE_COUNT, r8)
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STI(r4)
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bl schedule
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ldi r4, #0
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st r4, @(TI_PRE_COUNT, r8)
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CLI(r4)
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bra need_resched
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#endif
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; system call handler stub
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ENTRY(system_call)
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SWITCH_TO_KERNEL_STACK
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SAVE_ALL
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STI(r4) ; Enable interrupt
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st sp, PTREGS(sp) ; implicit pt_regs parameter
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cmpui r7, #NR_syscalls
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bnc syscall_badsys
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st r7, SYSCALL_NR(sp) ; syscall_nr
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; system call tracing in operation
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GET_THREAD_INFO(r8)
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ld r9, @(TI_FLAGS, r8)
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and3 r4, r9, #_TIF_SYSCALL_TRACE
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bnez r4, syscall_trace_entry
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syscall_call:
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slli r7, #2 ; table jump for the system call
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LDIMM (r4, sys_call_table)
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add r7, r4
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ld r7, @r7
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jl r7 ; execute system call
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st r0, R0(sp) ; save the return value
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syscall_exit:
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CLI(r4) ; make sure we don't miss an interrupt
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; setting need_resched or sigpending
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; between sampling and the iret
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ld r9, @(TI_FLAGS, r8)
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and3 r4, r9, #_TIF_ALLWORK_MASK ; current->work
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bnez r4, syscall_exit_work
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restore_all:
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RESTORE_ALL
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# perform work that needs to be done immediately before resumption
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# r9 : frags
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ALIGN
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work_pending:
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and3 r4, r9, #_TIF_NEED_RESCHED
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beqz r4, work_notifysig
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work_resched:
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bl schedule
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CLI(r4) ; make sure we don't miss an interrupt
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; setting need_resched or sigpending
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; between sampling and the iret
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ld r9, @(TI_FLAGS, r8)
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and3 r4, r9, #_TIF_WORK_MASK ; is there any work to be done other
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; than syscall tracing?
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beqz r4, restore_all
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and3 r4, r4, #_TIF_NEED_RESCHED
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bnez r4, work_resched
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work_notifysig: ; deal with pending signals and
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; notify-resume requests
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mv r0, sp ; arg1 : struct pt_regs *regs
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ldi r1, #0 ; arg2 : sigset_t *oldset
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mv r2, r9 ; arg3 : __u32 thread_info_flags
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bl do_notify_resume
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bra restore_all
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; perform syscall exit tracing
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ALIGN
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syscall_trace_entry:
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ldi r4, #-ENOSYS
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st r4, R0(sp)
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bl do_syscall_trace
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ld r0, ORIG_R0(sp)
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ld r1, R1(sp)
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ld r2, R2(sp)
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ld r3, R3(sp)
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ld r4, R4(sp)
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ld r5, R5(sp)
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ld r6, R6(sp)
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ld r7, SYSCALL_NR(sp)
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cmpui r7, #NR_syscalls
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bc syscall_call
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bra syscall_exit
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; perform syscall exit tracing
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ALIGN
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syscall_exit_work:
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ld r9, @(TI_FLAGS, r8)
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and3 r4, r9, #_TIF_SYSCALL_TRACE
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beqz r4, work_pending
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STI(r4) ; could let do_syscall_trace() call
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; schedule() instead
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bl do_syscall_trace
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bra resume_userspace
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ALIGN
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syscall_fault:
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SAVE_ALL
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GET_THREAD_INFO(r8)
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ldi r4, #-EFAULT
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st r4, R0(sp)
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bra resume_userspace
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ALIGN
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syscall_badsys:
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ldi r4, #-ENOSYS
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st r4, R0(sp)
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bra resume_userspace
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.global eit_vector
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.equ ei_vec_table, eit_vector + 0x0200
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/*
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* EI handler routine
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*/
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ENTRY(ei_handler)
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#if defined(CONFIG_CHIP_M32700)
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SWITCH_TO_KERNEL_STACK
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; WORKAROUND: force to clear SM bit and use the kernel stack (SPI).
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#endif
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SAVE_ALL
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mv r1, sp ; arg1(regs)
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#if defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_XNUX2) \
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|| defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_M32102) \
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|| defined(CONFIG_CHIP_OPSP)
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; GET_ICU_STATUS;
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seth r0, #shigh(M32R_ICU_ISTS_ADDR)
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ld r0, @(low(M32R_ICU_ISTS_ADDR),r0)
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st r0, @-sp
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#if defined(CONFIG_SMP)
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/*
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* If IRQ == 0 --> Nothing to do, Not write IMASK
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* If IRQ == IPI --> Do IPI handler, Not write IMASK
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* If IRQ != 0, IPI --> Do do_IRQ(), Write IMASK
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*/
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slli r0, #4
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srli r0, #24 ; r0(irq_num<<2)
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;; IRQ exist check
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#if defined(CONFIG_CHIP_M32700)
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/* WORKAROUND: IMASK bug M32700-TS1, TS2 chip. */
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beqz r0, 3f ; if (!irq_num) goto exit
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#else
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beqz r0, 1f ; if (!irq_num) goto exit
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#endif /* WORKAROUND */
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;; IPI check
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cmpi r0, #(M32R_IRQ_IPI0<<2) ; ISN < IPI0 check
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bc 2f
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cmpi r0, #((M32R_IRQ_IPI7+1)<<2) ; ISN > IPI7 check
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bnc 2f
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LDIMM (r2, ei_vec_table)
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add r2, r0
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ld r2, @r2
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beqz r2, 1f ; if (no IPI handler) goto exit
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mv r0, r1 ; arg0(regs)
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jl r2
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.fillinsn
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1:
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addi sp, #4
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bra ret_to_intr
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#if defined(CONFIG_CHIP_M32700)
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/* WORKAROUND: IMASK bug M32700-TS1, TS2 chip. */
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.fillinsn
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3:
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ld24 r14, #0x00070000
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seth r0, #shigh(M32R_ICU_IMASK_ADDR)
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st r14, @(low(M32R_ICU_IMASK_ADDR), r0)
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addi sp, #4
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bra ret_to_intr
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#endif /* WORKAROUND */
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;; do_IRQ
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.fillinsn
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2:
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srli r0, #2
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#if defined(CONFIG_PLAT_USRV)
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add3 r2, r0, #-(M32R_IRQ_INT1) ; INT1# interrupt
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bnez r2, 9f
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; read ICU status register of PLD
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seth r0, #high(PLD_ICUISTS)
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or3 r0, r0, #low(PLD_ICUISTS)
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lduh r0, @r0
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slli r0, #21
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srli r0, #27 ; ISN
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addi r0, #(M32700UT_PLD_IRQ_BASE)
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.fillinsn
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9:
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#elif defined(CONFIG_PLAT_M32700UT)
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add3 r2, r0, #-(M32R_IRQ_INT1) ; INT1# interrupt
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bnez r2, check_int0
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; read ICU status register of PLD
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seth r0, #high(PLD_ICUISTS)
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or3 r0, r0, #low(PLD_ICUISTS)
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lduh r0, @r0
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slli r0, #21
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srli r0, #27 ; ISN
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addi r0, #(M32700UT_PLD_IRQ_BASE)
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bra check_end
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.fillinsn
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check_int0:
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add3 r2, r0, #-(M32R_IRQ_INT0) ; INT0# interrupt
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bnez r2, check_int2
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; read ICU status of LAN-board
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seth r0, #high(M32700UT_LAN_ICUISTS)
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or3 r0, r0, #low(M32700UT_LAN_ICUISTS)
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lduh r0, @r0
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slli r0, #21
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srli r0, #27 ; ISN
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add3 r0, r0, #(M32700UT_LAN_PLD_IRQ_BASE)
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bra check_end
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.fillinsn
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check_int2:
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add3 r2, r0, #-(M32R_IRQ_INT2) ; INT2# interrupt
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bnez r2, check_end
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; read ICU status of LCD-board
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seth r0, #high(M32700UT_LCD_ICUISTS)
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or3 r0, r0, #low(M32700UT_LCD_ICUISTS)
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lduh r0, @r0
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slli r0, #21
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srli r0, #27 ; ISN
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add3 r0, r0, #(M32700UT_LCD_PLD_IRQ_BASE)
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bra check_end
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.fillinsn
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check_end:
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#elif defined(CONFIG_PLAT_OPSPUT)
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add3 r2, r0, #-(M32R_IRQ_INT1) ; INT1# interrupt
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bnez r2, check_int0
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; read ICU status register of PLD
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seth r0, #high(PLD_ICUISTS)
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or3 r0, r0, #low(PLD_ICUISTS)
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lduh r0, @r0
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slli r0, #21
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srli r0, #27 ; ISN
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addi r0, #(OPSPUT_PLD_IRQ_BASE)
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bra check_end
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.fillinsn
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check_int0:
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add3 r2, r0, #-(M32R_IRQ_INT0) ; INT0# interrupt
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bnez r2, check_int2
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; read ICU status of LAN-board
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seth r0, #high(OPSPUT_LAN_ICUISTS)
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or3 r0, r0, #low(OPSPUT_LAN_ICUISTS)
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lduh r0, @r0
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slli r0, #21
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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)
|
|
|