From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-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! --- arch/m32r/kernel/entry.S | 1000 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1000 insertions(+) create mode 100644 arch/m32r/kernel/entry.S (limited to 'arch/m32r/kernel/entry.S') diff --git a/arch/m32r/kernel/entry.S b/arch/m32r/kernel/entry.S new file mode 100644 index 000000000000..dddbf6b5ed2c --- /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 + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#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) + -- cgit v1.2.3