59c51591a0
Signed-off-by: Michael Opdenacker <michael@free-electrons.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
1122 lines
41 KiB
ArmAsm
1122 lines
41 KiB
ArmAsm
/*
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* arch/v850/kernel/entry.S -- Low-level system-call handling, trap handlers,
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* and context-switching
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*
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* Copyright (C) 2001,02,03 NEC Electronics Corporation
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* Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org>
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file COPYING in the main directory of this
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* archive for more details.
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*
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* Written by Miles Bader <miles@gnu.org>
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*/
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#include <linux/sys.h>
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#include <asm/entry.h>
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#include <asm/current.h>
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#include <asm/thread_info.h>
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#include <asm/clinkage.h>
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#include <asm/processor.h>
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#include <asm/irq.h>
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#include <asm/errno.h>
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#include <asm/asm-offsets.h>
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/* Make a slightly more convenient alias for C_SYMBOL_NAME. */
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#define CSYM C_SYMBOL_NAME
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/* The offset of the struct pt_regs in a state-save-frame on the stack. */
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#define PTO STATE_SAVE_PT_OFFSET
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/* Save argument registers to the state-save-frame pointed to by EP. */
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#define SAVE_ARG_REGS \
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sst.w r6, PTO+PT_GPR(6)[ep]; \
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sst.w r7, PTO+PT_GPR(7)[ep]; \
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sst.w r8, PTO+PT_GPR(8)[ep]; \
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sst.w r9, PTO+PT_GPR(9)[ep]
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/* Restore argument registers from the state-save-frame pointed to by EP. */
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#define RESTORE_ARG_REGS \
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sld.w PTO+PT_GPR(6)[ep], r6; \
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sld.w PTO+PT_GPR(7)[ep], r7; \
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sld.w PTO+PT_GPR(8)[ep], r8; \
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sld.w PTO+PT_GPR(9)[ep], r9
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/* Save value return registers to the state-save-frame pointed to by EP. */
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#define SAVE_RVAL_REGS \
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sst.w r10, PTO+PT_GPR(10)[ep]; \
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sst.w r11, PTO+PT_GPR(11)[ep]
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/* Restore value return registers from the state-save-frame pointed to by EP. */
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#define RESTORE_RVAL_REGS \
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sld.w PTO+PT_GPR(10)[ep], r10; \
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sld.w PTO+PT_GPR(11)[ep], r11
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#define SAVE_CALL_CLOBBERED_REGS_BEFORE_ARGS \
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sst.w r1, PTO+PT_GPR(1)[ep]; \
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sst.w r5, PTO+PT_GPR(5)[ep]
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#define SAVE_CALL_CLOBBERED_REGS_AFTER_RVAL \
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sst.w r12, PTO+PT_GPR(12)[ep]; \
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sst.w r13, PTO+PT_GPR(13)[ep]; \
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sst.w r14, PTO+PT_GPR(14)[ep]; \
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sst.w r15, PTO+PT_GPR(15)[ep]; \
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sst.w r16, PTO+PT_GPR(16)[ep]; \
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sst.w r17, PTO+PT_GPR(17)[ep]; \
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sst.w r18, PTO+PT_GPR(18)[ep]; \
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sst.w r19, PTO+PT_GPR(19)[ep]
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#define RESTORE_CALL_CLOBBERED_REGS_BEFORE_ARGS \
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sld.w PTO+PT_GPR(1)[ep], r1; \
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sld.w PTO+PT_GPR(5)[ep], r5
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#define RESTORE_CALL_CLOBBERED_REGS_AFTER_RVAL \
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sld.w PTO+PT_GPR(12)[ep], r12; \
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sld.w PTO+PT_GPR(13)[ep], r13; \
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sld.w PTO+PT_GPR(14)[ep], r14; \
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sld.w PTO+PT_GPR(15)[ep], r15; \
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sld.w PTO+PT_GPR(16)[ep], r16; \
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sld.w PTO+PT_GPR(17)[ep], r17; \
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sld.w PTO+PT_GPR(18)[ep], r18; \
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sld.w PTO+PT_GPR(19)[ep], r19
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/* Save `call clobbered' registers to the state-save-frame pointed to by EP. */
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#define SAVE_CALL_CLOBBERED_REGS \
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SAVE_CALL_CLOBBERED_REGS_BEFORE_ARGS; \
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SAVE_ARG_REGS; \
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SAVE_RVAL_REGS; \
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SAVE_CALL_CLOBBERED_REGS_AFTER_RVAL
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/* Restore `call clobbered' registers from the state-save-frame pointed to
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by EP. */
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#define RESTORE_CALL_CLOBBERED_REGS \
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RESTORE_CALL_CLOBBERED_REGS_BEFORE_ARGS; \
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RESTORE_ARG_REGS; \
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RESTORE_RVAL_REGS; \
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RESTORE_CALL_CLOBBERED_REGS_AFTER_RVAL
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/* Save `call clobbered' registers except for the return-value registers
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to the state-save-frame pointed to by EP. */
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#define SAVE_CALL_CLOBBERED_REGS_NO_RVAL \
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SAVE_CALL_CLOBBERED_REGS_BEFORE_ARGS; \
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SAVE_ARG_REGS; \
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SAVE_CALL_CLOBBERED_REGS_AFTER_RVAL
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/* Restore `call clobbered' registers except for the return-value registers
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from the state-save-frame pointed to by EP. */
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#define RESTORE_CALL_CLOBBERED_REGS_NO_RVAL \
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RESTORE_CALL_CLOBBERED_REGS_BEFORE_ARGS; \
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RESTORE_ARG_REGS; \
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RESTORE_CALL_CLOBBERED_REGS_AFTER_RVAL
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/* Save `call saved' registers to the state-save-frame pointed to by EP. */
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#define SAVE_CALL_SAVED_REGS \
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sst.w r2, PTO+PT_GPR(2)[ep]; \
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sst.w r20, PTO+PT_GPR(20)[ep]; \
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sst.w r21, PTO+PT_GPR(21)[ep]; \
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sst.w r22, PTO+PT_GPR(22)[ep]; \
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sst.w r23, PTO+PT_GPR(23)[ep]; \
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sst.w r24, PTO+PT_GPR(24)[ep]; \
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sst.w r25, PTO+PT_GPR(25)[ep]; \
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sst.w r26, PTO+PT_GPR(26)[ep]; \
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sst.w r27, PTO+PT_GPR(27)[ep]; \
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sst.w r28, PTO+PT_GPR(28)[ep]; \
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sst.w r29, PTO+PT_GPR(29)[ep]
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/* Restore `call saved' registers from the state-save-frame pointed to by EP. */
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#define RESTORE_CALL_SAVED_REGS \
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sld.w PTO+PT_GPR(2)[ep], r2; \
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sld.w PTO+PT_GPR(20)[ep], r20; \
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sld.w PTO+PT_GPR(21)[ep], r21; \
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sld.w PTO+PT_GPR(22)[ep], r22; \
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sld.w PTO+PT_GPR(23)[ep], r23; \
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sld.w PTO+PT_GPR(24)[ep], r24; \
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sld.w PTO+PT_GPR(25)[ep], r25; \
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sld.w PTO+PT_GPR(26)[ep], r26; \
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sld.w PTO+PT_GPR(27)[ep], r27; \
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sld.w PTO+PT_GPR(28)[ep], r28; \
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sld.w PTO+PT_GPR(29)[ep], r29
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/* Save the PC stored in the special register SAVEREG to the state-save-frame
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pointed to by EP. r19 is clobbered. */
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#define SAVE_PC(savereg) \
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stsr SR_ ## savereg, r19; \
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sst.w r19, PTO+PT_PC[ep]
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/* Restore the PC from the state-save-frame pointed to by EP, to the special
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register SAVEREG. LP is clobbered (it is used as a scratch register
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because the POP_STATE macro restores it, and this macro is usually used
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inside POP_STATE). */
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#define RESTORE_PC(savereg) \
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sld.w PTO+PT_PC[ep], lp; \
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ldsr lp, SR_ ## savereg
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/* Save the PSW register stored in the special register SAVREG to the
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state-save-frame pointed to by EP. r19 is clobbered. */
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#define SAVE_PSW(savereg) \
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stsr SR_ ## savereg, r19; \
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sst.w r19, PTO+PT_PSW[ep]
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/* Restore the PSW register from the state-save-frame pointed to by EP, to
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the special register SAVEREG. LP is clobbered (it is used as a scratch
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register because the POP_STATE macro restores it, and this macro is
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usually used inside POP_STATE). */
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#define RESTORE_PSW(savereg) \
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sld.w PTO+PT_PSW[ep], lp; \
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ldsr lp, SR_ ## savereg
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/* Save CTPC/CTPSW/CTBP registers to the state-save-frame pointed to by REG.
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r19 is clobbered. */
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#define SAVE_CT_REGS \
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stsr SR_CTPC, r19; \
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sst.w r19, PTO+PT_CTPC[ep]; \
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stsr SR_CTPSW, r19; \
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sst.w r19, PTO+PT_CTPSW[ep]; \
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stsr SR_CTBP, r19; \
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sst.w r19, PTO+PT_CTBP[ep]
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/* Restore CTPC/CTPSW/CTBP registers from the state-save-frame pointed to by EP.
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LP is clobbered (it is used as a scratch register because the POP_STATE
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macro restores it, and this macro is usually used inside POP_STATE). */
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#define RESTORE_CT_REGS \
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sld.w PTO+PT_CTPC[ep], lp; \
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ldsr lp, SR_CTPC; \
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sld.w PTO+PT_CTPSW[ep], lp; \
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ldsr lp, SR_CTPSW; \
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sld.w PTO+PT_CTBP[ep], lp; \
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ldsr lp, SR_CTBP
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/* Push register state, except for the stack pointer, on the stack in the
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form of a state-save-frame (plus some extra padding), in preparation for
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a system call. This macro makes sure that the EP, GP, and LP
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registers are saved, and TYPE identifies the set of extra registers to
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be saved as well. Also copies (the new value of) SP to EP. */
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#define PUSH_STATE(type) \
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addi -STATE_SAVE_SIZE, sp, sp; /* Make room on the stack. */ \
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st.w ep, PTO+PT_GPR(GPR_EP)[sp]; \
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mov sp, ep; \
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sst.w gp, PTO+PT_GPR(GPR_GP)[ep]; \
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sst.w lp, PTO+PT_GPR(GPR_LP)[ep]; \
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type ## _STATE_SAVER
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/* Pop a register state pushed by PUSH_STATE, except for the stack pointer,
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from the stack. */
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#define POP_STATE(type) \
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mov sp, ep; \
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type ## _STATE_RESTORER; \
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sld.w PTO+PT_GPR(GPR_GP)[ep], gp; \
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sld.w PTO+PT_GPR(GPR_LP)[ep], lp; \
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sld.w PTO+PT_GPR(GPR_EP)[ep], ep; \
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addi STATE_SAVE_SIZE, sp, sp /* Clean up our stack space. */
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/* Switch to the kernel stack if necessary, and push register state on the
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stack in the form of a state-save-frame. Also load the current task
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pointer if switching from user mode. The stack-pointer (r3) should have
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already been saved to the memory location SP_SAVE_LOC (the reason for
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this is that the interrupt vectors may be beyond a 22-bit signed offset
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jump from the actual interrupt handler, and this allows them to save the
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stack-pointer and use that register to do an indirect jump). This macro
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makes sure that `special' registers, system registers, and the stack
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pointer are saved; TYPE identifies the set of extra registers to be
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saved as well. SYSCALL_NUM is the register in which the system-call
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number this state is for is stored (r0 if this isn't a system call).
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Interrupts should already be disabled when calling this. */
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#define SAVE_STATE(type, syscall_num, sp_save_loc) \
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tst1 0, KM; /* See if already in kernel mode. */ \
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bz 1f; \
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ld.w sp_save_loc, sp; /* ... yes, use saved SP. */ \
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br 2f; \
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1: ld.w KSP, sp; /* ... no, switch to kernel stack. */ \
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2: PUSH_STATE(type); \
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ld.b KM, r19; /* Remember old kernel-mode. */ \
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sst.w r19, PTO+PT_KERNEL_MODE[ep]; \
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ld.w sp_save_loc, r19; /* Remember old SP. */ \
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sst.w r19, PTO+PT_GPR(GPR_SP)[ep]; \
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mov 1, r19; /* Now definitely in kernel-mode. */ \
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st.b r19, KM; \
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GET_CURRENT_TASK(CURRENT_TASK); /* Fetch the current task pointer. */ \
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/* Save away the syscall number. */ \
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sst.w syscall_num, PTO+PT_CUR_SYSCALL[ep]
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/* Save register state not normally saved by PUSH_STATE for TYPE, to the
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state-save-frame on the stack; also copies SP to EP. r19 may be trashed. */
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#define SAVE_EXTRA_STATE(type) \
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mov sp, ep; \
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type ## _EXTRA_STATE_SAVER
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/* Restore register state not normally restored by POP_STATE for TYPE,
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from the state-save-frame on the stack; also copies SP to EP.
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r19 may be trashed. */
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#define RESTORE_EXTRA_STATE(type) \
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mov sp, ep; \
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type ## _EXTRA_STATE_RESTORER
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/* Save any call-clobbered registers not normally saved by PUSH_STATE for
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TYPE, to the state-save-frame on the stack.
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EP may be trashed, but is not guaranteed to contain a copy of SP
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(unlike after most SAVE_... macros). r19 may be trashed. */
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#define SAVE_EXTRA_STATE_FOR_SCHEDULE(type) \
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type ## _SCHEDULE_EXTRA_STATE_SAVER
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/* Restore any call-clobbered registers not normally restored by
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POP_STATE for TYPE, to the state-save-frame on the stack.
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EP may be trashed, but is not guaranteed to contain a copy of SP
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(unlike after most RESTORE_... macros). r19 may be trashed. */
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#define RESTORE_EXTRA_STATE_FOR_SCHEDULE(type) \
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type ## _SCHEDULE_EXTRA_STATE_RESTORER
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/* These are extra_state_saver/restorer values for a user trap. Note
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that we save the argument registers so that restarted syscalls will
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function properly (otherwise it wouldn't be necessary), and we must
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_not_ restore the return-value registers (so that traps can return a
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value!), but call-clobbered registers are not saved at all, as the
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caller of the syscall function should have saved them. */
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#define TRAP_RET reti
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/* Traps don't save call-clobbered registers (but do still save arg regs).
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We preserve PSw to keep long-term state, namely interrupt status (for traps
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from kernel-mode), and the single-step flag (for user traps). */
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#define TRAP_STATE_SAVER \
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SAVE_ARG_REGS; \
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SAVE_PC(EIPC); \
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SAVE_PSW(EIPSW)
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/* When traps return, they just leave call-clobbered registers (except for arg
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regs) with whatever value they have from the kernel. Traps don't preserve
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the PSW, but we zero EIPSW to ensure it doesn't contain anything dangerous
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(in particular, the single-step flag). */
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#define TRAP_STATE_RESTORER \
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RESTORE_ARG_REGS; \
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RESTORE_PC(EIPC); \
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RESTORE_PSW(EIPSW)
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/* Save registers not normally saved by traps. We need to save r12, even
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though it's nominally call-clobbered, because it's used when restarting
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a system call (the signal-handling path uses SAVE_EXTRA_STATE, and
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expects r12 to be restored when the trap returns). */
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#define TRAP_EXTRA_STATE_SAVER \
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SAVE_RVAL_REGS; \
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sst.w r12, PTO+PT_GPR(12)[ep]; \
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SAVE_CALL_SAVED_REGS; \
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SAVE_CT_REGS
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#define TRAP_EXTRA_STATE_RESTORER \
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RESTORE_RVAL_REGS; \
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sld.w PTO+PT_GPR(12)[ep], r12; \
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RESTORE_CALL_SAVED_REGS; \
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RESTORE_CT_REGS
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/* Save registers prior to calling scheduler (just before trap returns).
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We have to save the return-value registers to preserve the trap's return
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value. Note that ..._SCHEDULE_EXTRA_STATE_SAVER, unlike most ..._SAVER
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macros, is required to setup EP itself if EP is needed (this is because
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in many cases, the macro is empty). */
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#define TRAP_SCHEDULE_EXTRA_STATE_SAVER \
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mov sp, ep; \
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SAVE_RVAL_REGS
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/* Note that ..._SCHEDULE_EXTRA_STATE_RESTORER, unlike most ..._RESTORER
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macros, is required to setup EP itself if EP is needed (this is because
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in many cases, the macro is empty). */
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#define TRAP_SCHEDULE_EXTRA_STATE_RESTORER \
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mov sp, ep; \
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RESTORE_RVAL_REGS
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/* Register saving/restoring for maskable interrupts. */
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#define IRQ_RET reti
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#define IRQ_STATE_SAVER \
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SAVE_CALL_CLOBBERED_REGS; \
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SAVE_PC(EIPC); \
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SAVE_PSW(EIPSW)
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#define IRQ_STATE_RESTORER \
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RESTORE_CALL_CLOBBERED_REGS; \
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RESTORE_PC(EIPC); \
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RESTORE_PSW(EIPSW)
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#define IRQ_EXTRA_STATE_SAVER \
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SAVE_CALL_SAVED_REGS; \
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SAVE_CT_REGS
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#define IRQ_EXTRA_STATE_RESTORER \
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RESTORE_CALL_SAVED_REGS; \
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RESTORE_CT_REGS
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#define IRQ_SCHEDULE_EXTRA_STATE_SAVER /* nothing */
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#define IRQ_SCHEDULE_EXTRA_STATE_RESTORER /* nothing */
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/* Register saving/restoring for non-maskable interrupts. */
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#define NMI_RET reti
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#define NMI_STATE_SAVER \
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SAVE_CALL_CLOBBERED_REGS; \
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SAVE_PC(FEPC); \
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SAVE_PSW(FEPSW);
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#define NMI_STATE_RESTORER \
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RESTORE_CALL_CLOBBERED_REGS; \
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RESTORE_PC(FEPC); \
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RESTORE_PSW(FEPSW);
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#define NMI_EXTRA_STATE_SAVER \
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SAVE_CALL_SAVED_REGS; \
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SAVE_CT_REGS
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#define NMI_EXTRA_STATE_RESTORER \
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RESTORE_CALL_SAVED_REGS; \
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RESTORE_CT_REGS
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#define NMI_SCHEDULE_EXTRA_STATE_SAVER /* nothing */
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#define NMI_SCHEDULE_EXTRA_STATE_RESTORER /* nothing */
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/* Register saving/restoring for debug traps. */
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#define DBTRAP_RET .long 0x014607E0 /* `dbret', but gas doesn't support it. */
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#define DBTRAP_STATE_SAVER \
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SAVE_CALL_CLOBBERED_REGS; \
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SAVE_PC(DBPC); \
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SAVE_PSW(DBPSW)
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#define DBTRAP_STATE_RESTORER \
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RESTORE_CALL_CLOBBERED_REGS; \
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RESTORE_PC(DBPC); \
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RESTORE_PSW(DBPSW)
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#define DBTRAP_EXTRA_STATE_SAVER \
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SAVE_CALL_SAVED_REGS; \
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SAVE_CT_REGS
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#define DBTRAP_EXTRA_STATE_RESTORER \
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RESTORE_CALL_SAVED_REGS; \
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RESTORE_CT_REGS
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#define DBTRAP_SCHEDULE_EXTRA_STATE_SAVER /* nothing */
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#define DBTRAP_SCHEDULE_EXTRA_STATE_RESTORER /* nothing */
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/* Register saving/restoring for a context switch. We don't need to save
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too many registers, because context-switching looks like a function call
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(via the function `switch_thread'), so callers will save any
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call-clobbered registers themselves. We do need to save the CT regs, as
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they're normally not saved during kernel entry (the kernel doesn't use
|
|
them). We save PSW so that interrupt-status state will correctly follow
|
|
each thread (mostly NMI vs. normal-IRQ/trap), though for the most part
|
|
it doesn't matter since threads are always in almost exactly the same
|
|
processor state during a context switch. The stack pointer and return
|
|
value are handled by switch_thread itself. */
|
|
#define SWITCH_STATE_SAVER \
|
|
SAVE_CALL_SAVED_REGS; \
|
|
SAVE_PSW(PSW); \
|
|
SAVE_CT_REGS
|
|
#define SWITCH_STATE_RESTORER \
|
|
RESTORE_CALL_SAVED_REGS; \
|
|
RESTORE_PSW(PSW); \
|
|
RESTORE_CT_REGS
|
|
|
|
|
|
/* Restore register state from the state-save-frame on the stack, switch back
|
|
to the user stack if necessary, and return from the trap/interrupt.
|
|
EXTRA_STATE_RESTORER is a sequence of assembly language statements to
|
|
restore anything not restored by this macro. Only registers not saved by
|
|
the C compiler are restored (that is, R3(sp), R4(gp), R31(lp), and
|
|
anything restored by EXTRA_STATE_RESTORER). */
|
|
#define RETURN(type) \
|
|
ld.b PTO+PT_KERNEL_MODE[sp], r19; \
|
|
di; /* Disable interrupts */ \
|
|
cmp r19, r0; /* See if returning to kernel mode, */\
|
|
bne 2f; /* ... if so, skip resched &c. */ \
|
|
\
|
|
/* We're returning to user mode, so check for various conditions that \
|
|
trigger rescheduling. */ \
|
|
GET_CURRENT_THREAD(r18); \
|
|
ld.w TI_FLAGS[r18], r19; \
|
|
andi _TIF_NEED_RESCHED, r19, r0; \
|
|
bnz 3f; /* Call the scheduler. */ \
|
|
5: andi _TIF_SIGPENDING, r19, r18; \
|
|
ld.w TASK_PTRACE[CURRENT_TASK], r19; /* ptrace flags */ \
|
|
or r18, r19; /* see if either is non-zero */ \
|
|
bnz 4f; /* if so, handle them */ \
|
|
\
|
|
/* Return to user state. */ \
|
|
1: st.b r0, KM; /* Now officially in user state. */ \
|
|
\
|
|
/* Final return. The stack-pointer fiddling is not needed when returning \
|
|
to kernel-mode, but they don't hurt, and this way we can share the \
|
|
(sometimes rather lengthy) POP_STATE macro. */ \
|
|
2: POP_STATE(type); \
|
|
st.w sp, KSP; /* Save the kernel stack pointer. */ \
|
|
ld.w PT_GPR(GPR_SP)-PT_SIZE[sp], sp; /* Restore stack pointer. */ \
|
|
type ## _RET; /* Return from the trap/interrupt. */ \
|
|
\
|
|
/* Call the scheduler before returning from a syscall/trap. */ \
|
|
3: SAVE_EXTRA_STATE_FOR_SCHEDULE(type); /* Prepare to call scheduler. */ \
|
|
jarl call_scheduler, lp; /* Call scheduler */ \
|
|
di; /* The scheduler enables interrupts */\
|
|
RESTORE_EXTRA_STATE_FOR_SCHEDULE(type); \
|
|
GET_CURRENT_THREAD(r18); \
|
|
ld.w TI_FLAGS[r18], r19; \
|
|
br 5b; /* Continue with return path. */ \
|
|
\
|
|
/* Handle a signal or ptraced process return. \
|
|
r18 should be non-zero if there are pending signals. */ \
|
|
4: /* Not all registers are saved by the normal trap/interrupt entry \
|
|
points (for instance, call-saved registers (because the normal \
|
|
C-compiler calling sequence in the kernel makes sure they're \
|
|
preserved), and call-clobbered registers in the case of \
|
|
traps), but signal handlers may want to examine or change the \
|
|
complete register state. Here we save anything not saved by \
|
|
the normal entry sequence, so that it may be safely restored \
|
|
(in a possibly modified form) after do_signal returns. */ \
|
|
SAVE_EXTRA_STATE(type); /* Save state not saved by entry. */ \
|
|
jarl handle_signal_or_ptrace_return, lp; \
|
|
RESTORE_EXTRA_STATE(type); /* Restore extra regs. */ \
|
|
br 1b
|
|
|
|
|
|
/* Jump to the appropriate function for the system call number in r12
|
|
(r12 is not preserved), or return an error if r12 is not valid. The
|
|
LP register should point to the location where the called function
|
|
should return. [note that MAKE_SYS_CALL uses label 1] */
|
|
#define MAKE_SYS_CALL \
|
|
/* Figure out which function to use for this system call. */ \
|
|
shl 2, r12; \
|
|
/* See if the system call number is valid. */ \
|
|
addi lo(CSYM(sys_call_table) - sys_call_table_end), r12, r0; \
|
|
bnh 1f; \
|
|
mov hilo(CSYM(sys_call_table)), r19; \
|
|
add r19, r12; \
|
|
ld.w 0[r12], r12; \
|
|
/* Make the system call. */ \
|
|
jmp [r12]; \
|
|
/* The syscall number is invalid, return an error. */ \
|
|
1: addi -ENOSYS, r0, r10; \
|
|
jmp [lp]
|
|
|
|
|
|
.text
|
|
|
|
/*
|
|
* User trap.
|
|
*
|
|
* Trap 0 system calls are also handled here.
|
|
*
|
|
* The stack-pointer (r3) should have already been saved to the memory
|
|
* location ENTRY_SP (the reason for this is that the interrupt vectors may be
|
|
* beyond a 22-bit signed offset jump from the actual interrupt handler, and
|
|
* this allows them to save the stack-pointer and use that register to do an
|
|
* indirect jump).
|
|
*
|
|
* Syscall protocol:
|
|
* Syscall number in r12, args in r6-r9
|
|
* Return value in r10
|
|
*/
|
|
G_ENTRY(trap):
|
|
SAVE_STATE (TRAP, r12, ENTRY_SP) // Save registers.
|
|
stsr SR_ECR, r19 // Find out which trap it was.
|
|
ei // Enable interrupts.
|
|
mov hilo(ret_from_trap), lp // where the trap should return
|
|
|
|
// The following two shifts (1) clear out extraneous NMI data in the
|
|
// upper 16-bits, (2) convert the 0x40 - 0x5f range of trap ECR
|
|
// numbers into the (0-31) << 2 range we want, (3) set the flags.
|
|
shl 27, r19 // chop off all high bits
|
|
shr 25, r19 // scale back down and then << 2
|
|
bnz 2f // See if not trap 0.
|
|
|
|
// Trap 0 is a `short' system call, skip general trap table.
|
|
MAKE_SYS_CALL // Jump to the syscall function.
|
|
|
|
2: // For other traps, use a table lookup.
|
|
mov hilo(CSYM(trap_table)), r18
|
|
add r19, r18
|
|
ld.w 0[r18], r18
|
|
jmp [r18] // Jump to the trap handler.
|
|
END(trap)
|
|
|
|
/* This is just like ret_from_trap, but first restores extra registers
|
|
saved by some wrappers. */
|
|
L_ENTRY(restore_extra_regs_and_ret_from_trap):
|
|
RESTORE_EXTRA_STATE(TRAP)
|
|
// fall through
|
|
END(restore_extra_regs_and_ret_from_trap)
|
|
|
|
/* Entry point used to return from a syscall/trap. */
|
|
L_ENTRY(ret_from_trap):
|
|
RETURN(TRAP)
|
|
END(ret_from_trap)
|
|
|
|
|
|
/* This the initial entry point for a new child thread, with an appropriate
|
|
stack in place that makes it look that the child is in the middle of an
|
|
syscall. This function is actually `returned to' from switch_thread
|
|
(copy_thread makes ret_from_fork the return address in each new thread's
|
|
saved context). */
|
|
C_ENTRY(ret_from_fork):
|
|
mov r10, r6 // switch_thread returns the prev task.
|
|
jarl CSYM(schedule_tail), lp // ...which is schedule_tail's arg
|
|
mov r0, r10 // Child's fork call should return 0.
|
|
br ret_from_trap // Do normal trap return.
|
|
C_END(ret_from_fork)
|
|
|
|
|
|
/*
|
|
* Trap 1: `long' system calls
|
|
* `Long' syscall protocol:
|
|
* Syscall number in r12, args in r6-r9, r13-r14
|
|
* Return value in r10
|
|
*/
|
|
L_ENTRY(syscall_long):
|
|
// Push extra arguments on the stack. Note that by default, the trap
|
|
// handler reserves enough stack space for 6 arguments, so we don't
|
|
// have to make any additional room.
|
|
st.w r13, 16[sp] // arg 5
|
|
st.w r14, 20[sp] // arg 6
|
|
|
|
// Make sure r13 and r14 are preserved, in case we have to restart a
|
|
// system call because of a signal (ep has already been set by caller).
|
|
st.w r13, PTO+PT_GPR(13)[sp]
|
|
st.w r14, PTO+PT_GPR(13)[sp]
|
|
mov hilo(ret_from_long_syscall), lp
|
|
|
|
MAKE_SYS_CALL // Jump to the syscall function.
|
|
END(syscall_long)
|
|
|
|
/* Entry point used to return from a long syscall. Only needed to restore
|
|
r13/r14 if the general trap mechanism doesnt' do so. */
|
|
L_ENTRY(ret_from_long_syscall):
|
|
ld.w PTO+PT_GPR(13)[sp], r13 // Restore the extra registers
|
|
ld.w PTO+PT_GPR(13)[sp], r14
|
|
br ret_from_trap // The rest is the same as other traps
|
|
END(ret_from_long_syscall)
|
|
|
|
|
|
/* These syscalls need access to the struct pt_regs on the stack, so we
|
|
implement them in assembly (they're basically all wrappers anyway). */
|
|
|
|
L_ENTRY(sys_fork_wrapper):
|
|
#ifdef CONFIG_MMU
|
|
addi SIGCHLD, r0, r6 // Arg 0: flags
|
|
ld.w PTO+PT_GPR(GPR_SP)[sp], r7 // Arg 1: child SP (use parent's)
|
|
movea PTO, sp, r8 // Arg 2: parent context
|
|
mov r0, r9 // Arg 3/4/5: 0
|
|
st.w r0, 16[sp]
|
|
st.w r0, 20[sp]
|
|
mov hilo(CSYM(do_fork)), r18 // Where the real work gets done
|
|
br save_extra_state_tramp // Save state and go there
|
|
#else
|
|
// fork almost works, enough to trick you into looking elsewhere :-(
|
|
addi -EINVAL, r0, r10
|
|
jmp [lp]
|
|
#endif
|
|
END(sys_fork_wrapper)
|
|
|
|
L_ENTRY(sys_vfork_wrapper):
|
|
addi CLONE_VFORK | CLONE_VM | SIGCHLD, r0, r6 // Arg 0: flags
|
|
ld.w PTO+PT_GPR(GPR_SP)[sp], r7 // Arg 1: child SP (use parent's)
|
|
movea PTO, sp, r8 // Arg 2: parent context
|
|
mov r0, r9 // Arg 3/4/5: 0
|
|
st.w r0, 16[sp]
|
|
st.w r0, 20[sp]
|
|
mov hilo(CSYM(do_fork)), r18 // Where the real work gets done
|
|
br save_extra_state_tramp // Save state and go there
|
|
END(sys_vfork_wrapper)
|
|
|
|
L_ENTRY(sys_clone_wrapper):
|
|
ld.w PTO+PT_GPR(GPR_SP)[sp], r19// parent's stack pointer
|
|
cmp r7, r0 // See if child SP arg (arg 1) is 0.
|
|
cmov z, r19, r7, r7 // ... and use the parent's if so.
|
|
movea PTO, sp, r8 // Arg 2: parent context
|
|
mov r0, r9 // Arg 3/4/5: 0
|
|
st.w r0, 16[sp]
|
|
st.w r0, 20[sp]
|
|
mov hilo(CSYM(do_fork)), r18 // Where the real work gets done
|
|
br save_extra_state_tramp // Save state and go there
|
|
END(sys_clone_wrapper)
|
|
|
|
|
|
L_ENTRY(sys_execve_wrapper):
|
|
movea PTO, sp, r9 // add user context as 4th arg
|
|
jr CSYM(sys_execve) // Do real work (tail-call).
|
|
END(sys_execve_wrapper)
|
|
|
|
|
|
L_ENTRY(sys_sigsuspend_wrapper):
|
|
movea PTO, sp, r7 // add user context as 2nd arg
|
|
mov hilo(CSYM(sys_sigsuspend)), r18 // syscall function
|
|
jarl save_extra_state_tramp, lp // Save state and do it
|
|
br restore_extra_regs_and_ret_from_trap
|
|
END(sys_sigsuspend_wrapper)
|
|
L_ENTRY(sys_rt_sigsuspend_wrapper):
|
|
movea PTO, sp, r8 // add user context as 3rd arg
|
|
mov hilo(CSYM(sys_rt_sigsuspend)), r18 // syscall function
|
|
jarl save_extra_state_tramp, lp // Save state and do it
|
|
br restore_extra_regs_and_ret_from_trap
|
|
END(sys_rt_sigsuspend_wrapper)
|
|
|
|
L_ENTRY(sys_sigreturn_wrapper):
|
|
movea PTO, sp, r6 // add user context as 1st arg
|
|
mov hilo(CSYM(sys_sigreturn)), r18 // syscall function
|
|
jarl save_extra_state_tramp, lp // Save state and do it
|
|
br restore_extra_regs_and_ret_from_trap
|
|
END(sys_sigreturn_wrapper)
|
|
L_ENTRY(sys_rt_sigreturn_wrapper):
|
|
movea PTO, sp, r6 // add user context as 1st arg
|
|
mov hilo(CSYM(sys_rt_sigreturn)), r18// syscall function
|
|
jarl save_extra_state_tramp, lp // Save state and do it
|
|
br restore_extra_regs_and_ret_from_trap
|
|
END(sys_rt_sigreturn_wrapper)
|
|
|
|
|
|
/* Save any state not saved by SAVE_STATE(TRAP), and jump to r18.
|
|
It's main purpose is to share the rather lengthy code sequence that
|
|
SAVE_STATE expands into among the above wrapper functions. */
|
|
L_ENTRY(save_extra_state_tramp):
|
|
SAVE_EXTRA_STATE(TRAP) // Save state not saved by entry.
|
|
jmp [r18] // Do the work the caller wants
|
|
END(save_extra_state_tramp)
|
|
|
|
|
|
/*
|
|
* Hardware maskable interrupts.
|
|
*
|
|
* The stack-pointer (r3) should have already been saved to the memory
|
|
* location ENTRY_SP (the reason for this is that the interrupt vectors may be
|
|
* beyond a 22-bit signed offset jump from the actual interrupt handler, and
|
|
* this allows them to save the stack-pointer and use that register to do an
|
|
* indirect jump).
|
|
*/
|
|
G_ENTRY(irq):
|
|
SAVE_STATE (IRQ, r0, ENTRY_SP) // Save registers.
|
|
|
|
stsr SR_ECR, r6 // Find out which interrupt it was.
|
|
movea PTO, sp, r7 // User regs are arg2
|
|
|
|
// All v850 implementations I know about encode their interrupts as
|
|
// multiples of 0x10, starting at 0x80 (after NMIs and software
|
|
// interrupts). Convert this number into a simple IRQ index for the
|
|
// rest of the kernel. We also clear the upper 16 bits, which hold
|
|
// NMI info, and don't appear to be cleared when a NMI returns.
|
|
shl 16, r6 // clear upper 16 bits
|
|
shr 20, r6 // shift back, and remove lower nibble
|
|
add -8, r6 // remove bias for irqs
|
|
|
|
// Call the high-level interrupt handling code.
|
|
jarl CSYM(handle_irq), lp
|
|
|
|
RETURN(IRQ)
|
|
END(irq)
|
|
|
|
|
|
/*
|
|
* Debug trap / illegal-instruction exception
|
|
*
|
|
* The stack-pointer (r3) should have already been saved to the memory
|
|
* location ENTRY_SP (the reason for this is that the interrupt vectors may be
|
|
* beyond a 22-bit signed offset jump from the actual interrupt handler, and
|
|
* this allows them to save the stack-pointer and use that register to do an
|
|
* indirect jump).
|
|
*/
|
|
G_ENTRY(dbtrap):
|
|
SAVE_STATE (DBTRAP, r0, ENTRY_SP)// Save registers.
|
|
|
|
/* First see if we came from kernel mode; if so, the dbtrap
|
|
instruction has a special meaning, to set the DIR (`debug
|
|
information register') register. This is because the DIR register
|
|
can _only_ be manipulated/read while in `debug mode,' and debug
|
|
mode is only active while we're inside the dbtrap handler. The
|
|
exact functionality is: { DIR = (DIR | r6) & ~r7; return DIR; }. */
|
|
ld.b PTO+PT_KERNEL_MODE[sp], r19
|
|
cmp r19, r0
|
|
bz 1f
|
|
|
|
stsr SR_DIR, r10
|
|
or r6, r10
|
|
not r7, r7
|
|
and r7, r10
|
|
ldsr r10, SR_DIR
|
|
stsr SR_DIR, r10 // Confirm the value we set
|
|
st.w r10, PTO+PT_GPR(10)[sp] // return it
|
|
br 3f
|
|
|
|
1: ei // Enable interrupts.
|
|
|
|
/* The default signal type we raise. */
|
|
mov SIGTRAP, r6
|
|
|
|
/* See if it's a single-step trap. */
|
|
stsr SR_DBPSW, r19
|
|
andi 0x0800, r19, r19
|
|
bnz 2f
|
|
|
|
/* Look to see if the preceding instruction was is a dbtrap or not,
|
|
to decide which signal we should use. */
|
|
stsr SR_DBPC, r19 // PC following trapping insn
|
|
ld.hu -2[r19], r19
|
|
ori 0xf840, r0, r20 // DBTRAP insn
|
|
cmp r19, r20 // Was this trap caused by DBTRAP?
|
|
cmov ne, SIGILL, r6, r6 // Choose signal appropriately
|
|
|
|
/* Raise the desired signal. */
|
|
2: mov CURRENT_TASK, r7 // Arg 1: task
|
|
jarl CSYM(send_sig), lp // tail call
|
|
|
|
3: RETURN(DBTRAP)
|
|
END(dbtrap)
|
|
|
|
|
|
/*
|
|
* Hardware non-maskable interrupts.
|
|
*
|
|
* The stack-pointer (r3) should have already been saved to the memory
|
|
* location ENTRY_SP (the reason for this is that the interrupt vectors may be
|
|
* beyond a 22-bit signed offset jump from the actual interrupt handler, and
|
|
* this allows them to save the stack-pointer and use that register to do an
|
|
* indirect jump).
|
|
*/
|
|
G_ENTRY(nmi):
|
|
SAVE_STATE (NMI, r0, NMI_ENTRY_SP); /* Save registers. */
|
|
|
|
stsr SR_ECR, r6; /* Find out which nmi it was. */
|
|
shr 20, r6; /* Extract NMI code in bits 20-24. */
|
|
movea PTO, sp, r7; /* User regs are arg2. */
|
|
|
|
/* Non-maskable interrupts always lie right after maskable interrupts.
|
|
Call the generic IRQ handler, with two arguments, the IRQ number,
|
|
and a pointer to the user registers, to handle the specifics.
|
|
(we subtract one because the first NMI has code 1). */
|
|
addi FIRST_NMI - 1, r6, r6
|
|
jarl CSYM(handle_irq), lp
|
|
|
|
RETURN(NMI)
|
|
END(nmi)
|
|
|
|
|
|
/*
|
|
* Trap with no handler
|
|
*/
|
|
L_ENTRY(bad_trap_wrapper):
|
|
mov r19, r6 // Arg 0: trap number
|
|
movea PTO, sp, r7 // Arg 1: user regs
|
|
jr CSYM(bad_trap) // tail call handler
|
|
END(bad_trap_wrapper)
|
|
|
|
|
|
/*
|
|
* Invoke the scheduler, called from the trap/irq kernel exit path.
|
|
*
|
|
* This basically just calls `schedule', but also arranges for extra
|
|
* registers to be saved for ptrace'd processes, so ptrace can modify them.
|
|
*/
|
|
L_ENTRY(call_scheduler):
|
|
ld.w TASK_PTRACE[CURRENT_TASK], r19 // See if task is ptrace'd
|
|
cmp r19, r0
|
|
bnz 1f // ... yes, do special stuff
|
|
jr CSYM(schedule) // ... no, just tail-call scheduler
|
|
|
|
// Save extra regs for ptrace'd task. We want to save anything
|
|
// that would otherwise only be `implicitly' saved by the normal
|
|
// compiler calling-convention.
|
|
1: mov sp, ep // Setup EP for SAVE_CALL_SAVED_REGS
|
|
SAVE_CALL_SAVED_REGS // Save call-saved registers to stack
|
|
mov lp, r20 // Save LP in a callee-saved register
|
|
|
|
jarl CSYM(schedule), lp // Call scheduler
|
|
|
|
mov r20, lp
|
|
mov sp, ep // We can't rely on EP after return
|
|
RESTORE_CALL_SAVED_REGS // Restore (possibly modified) regs
|
|
jmp [lp] // Return to the return path
|
|
END(call_scheduler)
|
|
|
|
|
|
/*
|
|
* This is an out-of-line handler for two special cases during the kernel
|
|
* trap/irq exit sequence:
|
|
*
|
|
* (1) If r18 is non-zero then a signal needs to be handled, which is
|
|
* done, and then the caller returned to.
|
|
*
|
|
* (2) If r18 is non-zero then we're returning to a ptraced process, which
|
|
* has several special cases -- single-stepping and trap tracing, both
|
|
* of which require using the `dbret' instruction to exit the kernel
|
|
* instead of the normal `reti' (this is because the CPU not correctly
|
|
* single-step after a reti). In this case, of course, this handler
|
|
* never returns to the caller.
|
|
*
|
|
* In either case, all registers should have been saved to the current
|
|
* state-save-frame on the stack, except for callee-saved registers.
|
|
*
|
|
* [These two different cases are combined merely to avoid bloating the
|
|
* macro-inlined code, not because they really make much sense together!]
|
|
*/
|
|
L_ENTRY(handle_signal_or_ptrace_return):
|
|
cmp r18, r0 // See if handling a signal
|
|
bz 1f // ... nope, go do ptrace return
|
|
|
|
// Handle a signal
|
|
mov lp, r20 // Save link-pointer
|
|
mov r10, r21 // Save return-values (for trap)
|
|
mov r11, r22
|
|
|
|
movea PTO, sp, r6 // Arg 1: struct pt_regs *regs
|
|
mov r0, r7 // Arg 2: sigset_t *oldset
|
|
jarl CSYM(do_signal), lp // Handle the signal
|
|
di // sig handling enables interrupts
|
|
|
|
mov r20, lp // Restore link-pointer
|
|
mov r21, r10 // Restore return-values (for trap)
|
|
mov r22, r11
|
|
ld.w TASK_PTRACE[CURRENT_TASK], r19 // check ptrace flags too
|
|
cmp r19, r0
|
|
bnz 1f // ... some set, so look more
|
|
2: jmp [lp] // ... none set, so return normally
|
|
|
|
// ptrace return
|
|
1: ld.w PTO+PT_PSW[sp], r19 // Look at user-processes's flags
|
|
andi 0x0800, r19, r19 // See if single-step flag is set
|
|
bz 2b // ... nope, return normally
|
|
|
|
// Return as if from a dbtrap insn
|
|
st.b r0, KM // Now officially in user state.
|
|
POP_STATE(DBTRAP) // Restore regs
|
|
st.w sp, KSP // Save the kernel stack pointer.
|
|
ld.w PT_GPR(GPR_SP)-PT_SIZE[sp], sp // Restore user stack pointer.
|
|
DBTRAP_RET // Return from the trap/interrupt.
|
|
END(handle_signal_or_ptrace_return)
|
|
|
|
|
|
/*
|
|
* This is where we switch between two threads. The arguments are:
|
|
* r6 -- pointer to the struct thread for the `current' process
|
|
* r7 -- pointer to the struct thread for the `new' process.
|
|
* when this function returns, it will return to the new thread.
|
|
*/
|
|
C_ENTRY(switch_thread):
|
|
// Return the previous task (r10 is not clobbered by restore below)
|
|
mov CURRENT_TASK, r10
|
|
// First, push the current processor state on the stack
|
|
PUSH_STATE(SWITCH)
|
|
// Now save the location of the kernel stack pointer for this thread;
|
|
// since we've pushed all other state on the stack, this is enough to
|
|
// restore it all later.
|
|
st.w sp, THREAD_KSP[r6]
|
|
// Now restore the stack pointer from the new process
|
|
ld.w THREAD_KSP[r7], sp
|
|
// ... and restore all state from that
|
|
POP_STATE(SWITCH)
|
|
// Update the current task pointer
|
|
GET_CURRENT_TASK(CURRENT_TASK)
|
|
// Now return into the new thread
|
|
jmp [lp]
|
|
C_END(switch_thread)
|
|
|
|
|
|
.data
|
|
|
|
.align 4
|
|
C_DATA(trap_table):
|
|
.long bad_trap_wrapper // trap 0, doesn't use trap table.
|
|
.long syscall_long // trap 1, `long' syscall.
|
|
.long bad_trap_wrapper
|
|
.long bad_trap_wrapper
|
|
.long bad_trap_wrapper
|
|
.long bad_trap_wrapper
|
|
.long bad_trap_wrapper
|
|
.long bad_trap_wrapper
|
|
.long bad_trap_wrapper
|
|
.long bad_trap_wrapper
|
|
.long bad_trap_wrapper
|
|
.long bad_trap_wrapper
|
|
.long bad_trap_wrapper
|
|
.long bad_trap_wrapper
|
|
.long bad_trap_wrapper
|
|
.long bad_trap_wrapper
|
|
C_END(trap_table)
|
|
|
|
|
|
.section .rodata
|
|
|
|
.align 4
|
|
C_DATA(sys_call_table):
|
|
.long CSYM(sys_restart_syscall) // 0
|
|
.long CSYM(sys_exit)
|
|
.long sys_fork_wrapper
|
|
.long CSYM(sys_read)
|
|
.long CSYM(sys_write)
|
|
.long CSYM(sys_open) // 5
|
|
.long CSYM(sys_close)
|
|
.long CSYM(sys_waitpid)
|
|
.long CSYM(sys_creat)
|
|
.long CSYM(sys_link)
|
|
.long CSYM(sys_unlink) // 10
|
|
.long sys_execve_wrapper
|
|
.long CSYM(sys_chdir)
|
|
.long CSYM(sys_time)
|
|
.long CSYM(sys_mknod)
|
|
.long CSYM(sys_chmod) // 15
|
|
.long CSYM(sys_chown)
|
|
.long CSYM(sys_ni_syscall) // was: break
|
|
.long CSYM(sys_ni_syscall) // was: oldstat (aka stat)
|
|
.long CSYM(sys_lseek)
|
|
.long CSYM(sys_getpid) // 20
|
|
.long CSYM(sys_mount)
|
|
.long CSYM(sys_oldumount)
|
|
.long CSYM(sys_setuid)
|
|
.long CSYM(sys_getuid)
|
|
.long CSYM(sys_stime) // 25
|
|
.long CSYM(sys_ptrace)
|
|
.long CSYM(sys_alarm)
|
|
.long CSYM(sys_ni_syscall) // was: oldfstat (aka fstat)
|
|
.long CSYM(sys_pause)
|
|
.long CSYM(sys_utime) // 30
|
|
.long CSYM(sys_ni_syscall) // was: stty
|
|
.long CSYM(sys_ni_syscall) // was: gtty
|
|
.long CSYM(sys_access)
|
|
.long CSYM(sys_nice)
|
|
.long CSYM(sys_ni_syscall) // 35, was: ftime
|
|
.long CSYM(sys_sync)
|
|
.long CSYM(sys_kill)
|
|
.long CSYM(sys_rename)
|
|
.long CSYM(sys_mkdir)
|
|
.long CSYM(sys_rmdir) // 40
|
|
.long CSYM(sys_dup)
|
|
.long CSYM(sys_pipe)
|
|
.long CSYM(sys_times)
|
|
.long CSYM(sys_ni_syscall) // was: prof
|
|
.long CSYM(sys_brk) // 45
|
|
.long CSYM(sys_setgid)
|
|
.long CSYM(sys_getgid)
|
|
.long CSYM(sys_signal)
|
|
.long CSYM(sys_geteuid)
|
|
.long CSYM(sys_getegid) // 50
|
|
.long CSYM(sys_acct)
|
|
.long CSYM(sys_umount) // recycled never used phys()
|
|
.long CSYM(sys_ni_syscall) // was: lock
|
|
.long CSYM(sys_ioctl)
|
|
.long CSYM(sys_fcntl) // 55
|
|
.long CSYM(sys_ni_syscall) // was: mpx
|
|
.long CSYM(sys_setpgid)
|
|
.long CSYM(sys_ni_syscall) // was: ulimit
|
|
.long CSYM(sys_ni_syscall)
|
|
.long CSYM(sys_umask) // 60
|
|
.long CSYM(sys_chroot)
|
|
.long CSYM(sys_ustat)
|
|
.long CSYM(sys_dup2)
|
|
.long CSYM(sys_getppid)
|
|
.long CSYM(sys_getpgrp) // 65
|
|
.long CSYM(sys_setsid)
|
|
.long CSYM(sys_sigaction)
|
|
.long CSYM(sys_sgetmask)
|
|
.long CSYM(sys_ssetmask)
|
|
.long CSYM(sys_setreuid) // 70
|
|
.long CSYM(sys_setregid)
|
|
.long sys_sigsuspend_wrapper
|
|
.long CSYM(sys_sigpending)
|
|
.long CSYM(sys_sethostname)
|
|
.long CSYM(sys_setrlimit) // 75
|
|
.long CSYM(sys_getrlimit)
|
|
.long CSYM(sys_getrusage)
|
|
.long CSYM(sys_gettimeofday)
|
|
.long CSYM(sys_settimeofday)
|
|
.long CSYM(sys_getgroups) // 80
|
|
.long CSYM(sys_setgroups)
|
|
.long CSYM(sys_select)
|
|
.long CSYM(sys_symlink)
|
|
.long CSYM(sys_ni_syscall) // was: oldlstat (aka lstat)
|
|
.long CSYM(sys_readlink) // 85
|
|
.long CSYM(sys_uselib)
|
|
.long CSYM(sys_swapon)
|
|
.long CSYM(sys_reboot)
|
|
.long CSYM(old_readdir)
|
|
.long CSYM(sys_mmap) // 90
|
|
.long CSYM(sys_munmap)
|
|
.long CSYM(sys_truncate)
|
|
.long CSYM(sys_ftruncate)
|
|
.long CSYM(sys_fchmod)
|
|
.long CSYM(sys_fchown) // 95
|
|
.long CSYM(sys_getpriority)
|
|
.long CSYM(sys_setpriority)
|
|
.long CSYM(sys_ni_syscall) // was: profil
|
|
.long CSYM(sys_statfs)
|
|
.long CSYM(sys_fstatfs) // 100
|
|
.long CSYM(sys_ni_syscall) // i386: ioperm
|
|
.long CSYM(sys_socketcall)
|
|
.long CSYM(sys_syslog)
|
|
.long CSYM(sys_setitimer)
|
|
.long CSYM(sys_getitimer) // 105
|
|
.long CSYM(sys_newstat)
|
|
.long CSYM(sys_newlstat)
|
|
.long CSYM(sys_newfstat)
|
|
.long CSYM(sys_ni_syscall) // was: olduname (aka uname)
|
|
.long CSYM(sys_ni_syscall) // 110, i386: iopl
|
|
.long CSYM(sys_vhangup)
|
|
.long CSYM(sys_ni_syscall) // was: idle
|
|
.long CSYM(sys_ni_syscall) // i386: vm86old
|
|
.long CSYM(sys_wait4)
|
|
.long CSYM(sys_swapoff) // 115
|
|
.long CSYM(sys_sysinfo)
|
|
.long CSYM(sys_ipc)
|
|
.long CSYM(sys_fsync)
|
|
.long sys_sigreturn_wrapper
|
|
.long sys_clone_wrapper // 120
|
|
.long CSYM(sys_setdomainname)
|
|
.long CSYM(sys_newuname)
|
|
.long CSYM(sys_ni_syscall) // i386: modify_ldt, m68k: cacheflush
|
|
.long CSYM(sys_adjtimex)
|
|
.long CSYM(sys_ni_syscall) // 125 - sys_mprotect
|
|
.long CSYM(sys_sigprocmask)
|
|
.long CSYM(sys_ni_syscall) // sys_create_module
|
|
.long CSYM(sys_init_module)
|
|
.long CSYM(sys_delete_module)
|
|
.long CSYM(sys_ni_syscall) // 130 - sys_get_kernel_syms
|
|
.long CSYM(sys_quotactl)
|
|
.long CSYM(sys_getpgid)
|
|
.long CSYM(sys_fchdir)
|
|
.long CSYM(sys_bdflush)
|
|
.long CSYM(sys_sysfs) // 135
|
|
.long CSYM(sys_personality)
|
|
.long CSYM(sys_ni_syscall) // for afs_syscall
|
|
.long CSYM(sys_setfsuid)
|
|
.long CSYM(sys_setfsgid)
|
|
.long CSYM(sys_llseek) // 140
|
|
.long CSYM(sys_getdents)
|
|
.long CSYM(sys_select) // for backward compat; remove someday
|
|
.long CSYM(sys_flock)
|
|
.long CSYM(sys_ni_syscall) // sys_msync
|
|
.long CSYM(sys_readv) // 145
|
|
.long CSYM(sys_writev)
|
|
.long CSYM(sys_getsid)
|
|
.long CSYM(sys_fdatasync)
|
|
.long CSYM(sys_sysctl)
|
|
.long CSYM(sys_ni_syscall) // 150 - sys_mlock
|
|
.long CSYM(sys_ni_syscall) // sys_munlock
|
|
.long CSYM(sys_ni_syscall) // sys_mlockall
|
|
.long CSYM(sys_ni_syscall) // sys_munlockall
|
|
.long CSYM(sys_sched_setparam)
|
|
.long CSYM(sys_sched_getparam) // 155
|
|
.long CSYM(sys_sched_setscheduler)
|
|
.long CSYM(sys_sched_getscheduler)
|
|
.long CSYM(sys_sched_yield)
|
|
.long CSYM(sys_sched_get_priority_max)
|
|
.long CSYM(sys_sched_get_priority_min) // 160
|
|
.long CSYM(sys_sched_rr_get_interval)
|
|
.long CSYM(sys_nanosleep)
|
|
.long CSYM(sys_ni_syscall) // sys_mremap
|
|
.long CSYM(sys_setresuid)
|
|
.long CSYM(sys_getresuid) // 165
|
|
.long CSYM(sys_ni_syscall) // for vm86
|
|
.long CSYM(sys_ni_syscall) // sys_query_module
|
|
.long CSYM(sys_poll)
|
|
.long CSYM(sys_nfsservctl)
|
|
.long CSYM(sys_setresgid) // 170
|
|
.long CSYM(sys_getresgid)
|
|
.long CSYM(sys_prctl)
|
|
.long sys_rt_sigreturn_wrapper
|
|
.long CSYM(sys_rt_sigaction)
|
|
.long CSYM(sys_rt_sigprocmask) // 175
|
|
.long CSYM(sys_rt_sigpending)
|
|
.long CSYM(sys_rt_sigtimedwait)
|
|
.long CSYM(sys_rt_sigqueueinfo)
|
|
.long sys_rt_sigsuspend_wrapper
|
|
.long CSYM(sys_pread64) // 180
|
|
.long CSYM(sys_pwrite64)
|
|
.long CSYM(sys_lchown)
|
|
.long CSYM(sys_getcwd)
|
|
.long CSYM(sys_capget)
|
|
.long CSYM(sys_capset) // 185
|
|
.long CSYM(sys_sigaltstack)
|
|
.long CSYM(sys_sendfile)
|
|
.long CSYM(sys_ni_syscall) // streams1
|
|
.long CSYM(sys_ni_syscall) // streams2
|
|
.long sys_vfork_wrapper // 190
|
|
.long CSYM(sys_ni_syscall)
|
|
.long CSYM(sys_mmap2)
|
|
.long CSYM(sys_truncate64)
|
|
.long CSYM(sys_ftruncate64)
|
|
.long CSYM(sys_stat64) // 195
|
|
.long CSYM(sys_lstat64)
|
|
.long CSYM(sys_fstat64)
|
|
.long CSYM(sys_fcntl64)
|
|
.long CSYM(sys_getdents64)
|
|
.long CSYM(sys_pivot_root) // 200
|
|
.long CSYM(sys_gettid)
|
|
.long CSYM(sys_tkill)
|
|
sys_call_table_end:
|
|
C_END(sys_call_table)
|