2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
189 lines
6.1 KiB
ArmAsm
189 lines
6.1 KiB
ArmAsm
/* $NetBSD: _setjmp.S,v 1.22 2010/09/03 17:22:51 matt Exp $ */
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/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Ralph Campbell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <machine/cdefs.h>
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#include <mips/regnum.h>
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#include <mips/asm.h>
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#include <machine/setjmp.h>
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#include <machine/signal.h> /* XXX */
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#include "assym.h"
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#include "SYS.h"
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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RCSID("from: @(#)_setjmp.s 8.1 (Berkeley) 6/4/93")
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#else
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RCSID("$NetBSD: _setjmp.S,v 1.22 2010/09/03 17:22:51 matt Exp $")
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#endif
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#endif /* LIBC_SCCS and not lint */
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/*
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* C library -- _setjmp, _longjmp
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*
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* _longjmp(a,v)
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* will generate a "return(v)" from
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* the last call to
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* _setjmp(a)
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* by restoring registers from the stack,
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* The previous signal state is NOT restored.
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*/
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.set noreorder
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LEAF(_setjmp)
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REG_PROLOGUE
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REG_LI v0, 0xACEDBADE # sigcontext magic number
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REG_S ra, _OFFSETOF_SC_PC(a0) # sc_pc = return address
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REG_S v0, _OFFSETOF_SC_REGS(a0) # saved in sc_regs[0]
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REG_S s0, _OFFSETOF_SC_REGS_S0(a0)
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REG_S s1, _OFFSETOF_SC_REGS_S1(a0)
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REG_S s2, _OFFSETOF_SC_REGS_S2(a0)
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REG_S s3, _OFFSETOF_SC_REGS_S3(a0)
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REG_S s4, _OFFSETOF_SC_REGS_S4(a0)
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REG_S s5, _OFFSETOF_SC_REGS_S5(a0)
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REG_S s6, _OFFSETOF_SC_REGS_S6(a0)
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REG_S s7, _OFFSETOF_SC_REGS_S7(a0)
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REG_S sp, _OFFSETOF_SC_REGS_SP(a0)
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REG_S s8, _OFFSETOF_SC_REGS_S8(a0)
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#if defined(__mips_n32) || defined(__mips_n64)
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REG_S gp, _OFFSETOF_SC_REGS_GP(a0) # newabi gp is callee-saved
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#endif
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/*
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* In N32, FP registers F20, F22, F24, F26, F28, F30 are callee-saved.
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* In N64, FP registers F23 .. F31 are callee-saved.
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* In O32, FP registers F20 .. F23 are callee-saved.
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*/
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#ifndef SOFTFLOAT_FOR_GCC
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cfc1 v0, $31 # too bad cant check if FP used
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INT_S v0, _OFFSETOF_SC_FPREGS_FCSR(a0)
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#if defined(__mips_n64) || defined(__mips_n32)
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FP_S $f30, _OFFSETOF_SC_FPREGS_F30(a0)
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FP_S $f28, _OFFSETOF_SC_FPREGS_F28(a0)
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FP_S $f26, _OFFSETOF_SC_FPREGS_F26(a0)
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FP_S $f24, _OFFSETOF_SC_FPREGS_F24(a0)
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#endif
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#if defined(__mips_n32) || defined(__mips_o32) || defined(__mips_o64)
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FP_S $f22, _OFFSETOF_SC_FPREGS_F22(a0)
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FP_S $f20, _OFFSETOF_SC_FPREGS_F20(a0)
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#endif
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#if defined(__mips_o32) || defined(__mips_o64)
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FP_S $f21, _OFFSETOF_SC_FPREGS_F21(a0)
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FP_S $f23, _OFFSETOF_SC_FPREGS_F23(a0)
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#endif
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#if defined(__mips_n64)
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FP_S $f25, _OFFSETOF_SC_FPREGS_F25(a0)
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FP_S $f27, _OFFSETOF_SC_FPREGS_F27(a0)
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FP_S $f29, _OFFSETOF_SC_FPREGS_F29(a0)
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FP_S $f31, _OFFSETOF_SC_FPREGS_F31(a0)
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#endif
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#endif /* SOFTFLOAT_FOR_GCC */
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REG_EPILOGUE
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j ra
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move v0, zero
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END(_setjmp)
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LEAF(_longjmp)
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PIC_PROLOGUE(_longjmp)
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PTR_SUBU sp, sp, CALLFRAME_SIZ
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SAVE_GP(CALLFRAME_GP)
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REG_PROLOGUE
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REG_L v0, _OFFSETOF_SC_REGS(a0) # get magic number
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REG_L ra, _OFFSETOF_SC_PC(a0)
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REG_LI t0, 0xACEDBADE
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bne v0, t0, botch # jump if error
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PTR_ADDU sp, sp, CALLFRAME_SIZ # does not matter, sanity
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REG_S a1, _OFFSETOF_SC_REGS_V0(a0) # save return value
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REG_L s0, _OFFSETOF_SC_REGS_S0(a0)
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REG_L s1, _OFFSETOF_SC_REGS_S1(a0)
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REG_L s2, _OFFSETOF_SC_REGS_S2(a0)
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REG_L s3, _OFFSETOF_SC_REGS_S3(a0)
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REG_L s4, _OFFSETOF_SC_REGS_S4(a0)
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REG_L s5, _OFFSETOF_SC_REGS_S5(a0)
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REG_L s6, _OFFSETOF_SC_REGS_S6(a0)
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REG_L s7, _OFFSETOF_SC_REGS_S7(a0)
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#if defined(__mips_n32) || defined(__mips_n64)
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REG_L gp, _OFFSETOF_SC_REGS_GP(a0)
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#endif
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# get fpu status
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REG_L sp, _OFFSETOF_SC_REGS_SP(a0)
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REG_L s8, _OFFSETOF_SC_REGS_S8(a0)
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#ifndef SOFTFLOAT_FOR_GCC
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INT_L v0, _OFFSETOF_SC_FPREGS_FCSR(a0)
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ctc1 v0, $31
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/*
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* In N32, FP registers F20, F22, F24, F26, F28, F30 are callee-saved.
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* In N64, FP registers F23 .. F31 are callee-saved.
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* In O32, FP registers F20 .. F23 are callee-saved.
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*/
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#if defined(__mips_n64) || defined(__mips_n32)
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FP_L $f30, _OFFSETOF_SC_FPREGS_F30(a0)
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FP_L $f28, _OFFSETOF_SC_FPREGS_F28(a0)
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FP_L $f26, _OFFSETOF_SC_FPREGS_F26(a0)
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FP_L $f24, _OFFSETOF_SC_FPREGS_F24(a0)
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#endif
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#if defined(__mips_n32) || defined(__mips_o32) || defined(__mips_o64)
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FP_L $f22, _OFFSETOF_SC_FPREGS_F22(a0)
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FP_L $f20, _OFFSETOF_SC_FPREGS_F20(a0)
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#endif
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#if defined(__mips_o32) || defined(__mips_o64)
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FP_L $f21, _OFFSETOF_SC_FPREGS_F21(a0)
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FP_L $f23, _OFFSETOF_SC_FPREGS_F23(a0)
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#endif
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#if defined(__mips_n64)
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FP_L $f25, _OFFSETOF_SC_FPREGS_F25(a0)
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FP_L $f27, _OFFSETOF_SC_FPREGS_F27(a0)
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FP_L $f29, _OFFSETOF_SC_FPREGS_F29(a0)
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FP_L $f31, _OFFSETOF_SC_FPREGS_F31(a0)
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#endif
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#endif /* SOFTFLOAT_FOR_GCC */
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REG_EPILOGUE
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move v0, a1 # get return value in 1st arg
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j ra
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nop
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botch:
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/*
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* We know we aren't returning so we don't care about restoring
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* our caller's GP.
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*/
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jal _C_LABEL(longjmperror)
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PIC_TAILCALL(abort)
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END(_longjmp)
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