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
124 lines
3.8 KiB
ArmAsm
124 lines
3.8 KiB
ArmAsm
/* $NetBSD: compat__setjmp.S,v 1.1 2005/09/16 18:21:19 drochner Exp $ */
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/*
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* Copyright (c) 1994, 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#include <machine/asm.h>
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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, 1)
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LDGP(pv)
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stq ra, (2 * 8)(a0) /* sc_pc = return address */
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stq s0, (( 9 + 4) * 8)(a0) /* saved bits of sc_regs */
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stq s1, ((10 + 4) * 8)(a0)
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stq s2, ((11 + 4) * 8)(a0)
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stq s3, ((12 + 4) * 8)(a0)
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stq s4, ((13 + 4) * 8)(a0)
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stq s5, ((14 + 4) * 8)(a0)
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stq s6, ((15 + 4) * 8)(a0)
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stq ra, ((26 + 4) * 8)(a0)
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stq sp, ((30 + 4) * 8)(a0)
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ldiq t0, 0xacedbadd /* sigcontext magic number */
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stq t0, ((31 + 4) * 8)(a0) /* magic in sc_regs[31] */
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/* Too bad we can't check if we actually used FP */
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ldiq t0, 1
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stq t0, (36 * 8)(a0) /* say we've used FP. */
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stt fs0, ((2 + 37) * 8)(a0) /* saved bits of sc_fpregs */
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stt fs1, ((3 + 37) * 8)(a0)
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stt fs2, ((4 + 37) * 8)(a0)
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stt fs3, ((5 + 37) * 8)(a0)
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stt fs4, ((6 + 37) * 8)(a0)
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stt fs5, ((7 + 37) * 8)(a0)
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stt fs6, ((8 + 37) * 8)(a0)
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stt fs7, ((9 + 37) * 8)(a0)
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mf_fpcr ft0 /* get FP control reg */
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stt ft0, (69 * 8)(a0) /* and store it in sc_fpcr */
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stq zero, (70 * 8)(a0) /* FP software control XXX */
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stq zero, (71 * 8)(a0) /* sc_reserved[0] */
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stq zero, (72 * 8)(a0) /* sc_reserved[1] */
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stq zero, (73 * 8)(a0) /* sc_xxx[0] */
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stq zero, (74 * 8)(a0) /* sc_xxx[1] */
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stq zero, (75 * 8)(a0) /* sc_xxx[2] */
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stq zero, (76 * 8)(a0) /* sc_xxx[3] */
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stq zero, (77 * 8)(a0) /* sc_xxx[4] */
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stq zero, (78 * 8)(a0) /* sc_xxx[5] */
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stq zero, (79 * 8)(a0) /* sc_xxx[6] */
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stq zero, (80 * 8)(a0) /* sc_xxx[7] */
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mov zero, v0 /* return zero */
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RET
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END(_setjmp)
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LEAF(_longjmp, 2)
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LDGP(pv)
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ldq t0, ((31 + 4) * 8)(a0) /* magic in sc_regs[31] */
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ldiq t1, 0xacedbadd
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cmpeq t0, t1, t0
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beq t0, botch /* If the magic was bad, punt */
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ldq ra, (2 * 8)(a0) /* sc_pc = return address */
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ldq s0, (( 9 + 4) * 8)(a0) /* saved bits of sc_regs */
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ldq s1, ((10 + 4) * 8)(a0)
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ldq s2, ((11 + 4) * 8)(a0)
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ldq s3, ((12 + 4) * 8)(a0)
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ldq s4, ((13 + 4) * 8)(a0)
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ldq s5, ((14 + 4) * 8)(a0)
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ldq s6, ((15 + 4) * 8)(a0)
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/* ldq ra, ((26 + 4) * 8)(a0) set above */
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ldq sp, ((30 + 4) * 8)(a0)
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ldt fs0, ((2 + 37) * 8)(a0) /* saved bits of sc_fpregs */
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ldt fs1, ((3 + 37) * 8)(a0)
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ldt fs2, ((4 + 37) * 8)(a0)
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ldt fs3, ((5 + 37) * 8)(a0)
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ldt fs4, ((6 + 37) * 8)(a0)
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ldt fs5, ((7 + 37) * 8)(a0)
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ldt fs6, ((8 + 37) * 8)(a0)
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ldt fs7, ((9 + 37) * 8)(a0)
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ldt ft0, (69 * 8)(a0) /* get sc_fpcr */
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mt_fpcr ft0 /* and restore it. */
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mov a1, v0 /* return second arg */
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RET
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botch:
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CALL(longjmperror)
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CALL(abort)
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RET /* "can't" get here... */
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END(_longjmp)
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