e415d48872
Bumping libc files for unsupported architectures, to simplify merging. A bunch of small fixes: * in libutil update * the macro in endian.h * some undefined types due to clear separation from host. * Fix a warning for cdbr.c Some modification which were required for the new build system: * inclusion path for const.h in sconst, still hacky * Removed default malloc.c which conflicts on some occasions.
121 lines
3.8 KiB
ArmAsm
121 lines
3.8 KiB
ArmAsm
/* $NetBSD: __setjmp14.S,v 1.5 2011/06/12 05:44:36 matt 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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#include "assym.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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* and the previous signal state.
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*/
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.set noreorder
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LEAF(__setjmp14, 1)
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LDGP(pv)
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stq ra, SC_PC(a0) /* sc_pc = return address */
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stq s0, (SC_REGS+_REG_S0)(a0) /* saved bits of sc_regs */
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stq s1, (SC_REGS+_REG_S1)(a0)
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stq s2, (SC_REGS+_REG_S2)(a0)
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stq s3, (SC_REGS+_REG_S3)(a0)
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stq s4, (SC_REGS+_REG_S4)(a0)
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stq s5, (SC_REGS+_REG_S5)(a0)
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stq s6, (SC_REGS+_REG_S6)(a0)
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stq ra, (SC_REGS+_REG_RA)(a0)
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stq sp, (SC_REGS+_REG_SP)(a0)
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/*
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* get signal information
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*/
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mov a0, s0 /* squirrel away ptr to sc */
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/* see what's blocked */
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mov zero, a0 /* how (insignificant) */
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mov zero, a1 /* set (NULL) */
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lda a2, SC_MASK(s0) /* point to mask in sc */
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CALL(__sigprocmask14)
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lda sp, -24(sp) /* sizeof struct sigaltstack */
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mov zero, a0
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mov sp, a1
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CALL(__sigaltstack14)
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ldl t0, 16(sp) /* offset of ss_flags */
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lda sp, 24(sp) /* sizeof struct sigaltstack */
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ldq ra, (SC_REGS+_REG_RA)(s0) /* restore return address */
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blt v0, botch /* check for error */
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and t0, 0x1, t0 /* get SA_ONSTACK flag */
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stq t0, SC_ONSTACK(s0) /* and save it in sc_onstack */
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/*
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* Restore old s0 and a0, and continue saving registers
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*/
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mov s0, a0
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ldq s0, (SC_REGS+_REG_S0)(a0)
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ldiq t0, 0xacedbade /* sigcontext magic number */
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stq t0, (SC_REGS+_REG_UNIQUE)(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, SC_OWNEDFP(a0) /* say we've used FP. */
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stt fs0, (2*8 + SC_FPREGS)(a0) /* saved bits of sc_fpregs */
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stt fs1, (3*8 + SC_FPREGS)(a0)
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stt fs2, (4*8 + SC_FPREGS)(a0)
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stt fs3, (5*8 + SC_FPREGS)(a0)
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stt fs4, (6*8 + SC_FPREGS)(a0)
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stt fs5, (7*8 + SC_FPREGS)(a0)
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stt fs6, (8*8 + SC_FPREGS)(a0)
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stt fs7, (9*8 + SC_FPREGS)(a0)
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excb /* required 4.7.8.1 Alpha ARM */
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mf_fpcr ft0 /* get FP control reg */
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excb /* required 4.7.8.1 Alpha ARM */
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stt ft0, SC_FPCR(a0) /* and store it in sc_fpcr */
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stq zero, SC_FP_CONTROL(a0) /* FP software control XXX */
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stq zero, (SC_RESERVED + 0*8)(a0) /* sc_reserved[0] */
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stq zero, (SC_RESERVED + 1*8)(a0) /* sc_reserved[1] */
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stq zero, (SC_XXX + 0*8)(a0) /* sc_xxx[0] */
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stq zero, (SC_XXX + 1*8)(a0) /* sc_xxx[1] */
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stq zero, (SC_XXX + 2*8)(a0) /* sc_xxx[2] */
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stq zero, (SC_XXX + 3*8)(a0) /* sc_xxx[3] */
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stq zero, (SC_XXX + 4*8)(a0) /* sc_xxx[4] */
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stq zero, (SC_XXX + 5*8)(a0) /* sc_xxx[5] */
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stq zero, (SC_XXX + 6*8)(a0) /* sc_xxx[6] */
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stq zero, (SC_XXX + 7*8)(a0) /* sc_xxx[7] */
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mov zero, v0 /* return zero */
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RET
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botch:
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CALL(abort)
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RET /* "can't" get here... */
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END(__setjmp14)
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