a7c139c0af
Update libc assembly code to use macros that work on both o32 and n64. Merge string functions from NetBSD. The changes are from http://svn.freebsd.org/base/user/jmallett/octeon Approved by: rrs (mentor), jmallett
165 lines
5.0 KiB
ArmAsm
165 lines
5.0 KiB
ArmAsm
/* $NetBSD: setjmp.S,v 1.17 2005/09/17 11:49:39 tsutsui 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/asm.h>
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__FBSDID("$FreeBSD$");
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#include <machine/regnum.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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ASMSTR("from: @(#)setjmp.s 8.1 (Berkeley) 6/4/93")
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ASMSTR("$NetBSD: setjmp.S,v 1.17 2005/09/17 11:49:39 tsutsui Exp $")
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#endif /* LIBC_SCCS and not lint */
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#include "SYS.h"
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#ifdef __ABICALLS__
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.abicalls
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#endif
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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 a struct sigcontext, see <signal.h>
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*/
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#define SETJMP_FRAME_SIZE (CALLFRAME_SIZ + (SZREG * 2))
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NESTED(setjmp, SETJMP_FRAME_SIZE, ra)
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.mask 0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ)
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SETUP_GP
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PTR_SUBU sp, sp, SETJMP_FRAME_SIZE # allocate stack frame
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SAVE_GP(CALLFRAME_GP)
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SETUP_GP64(CALLFRAME_GP, setjmp)
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REG_S ra, CALLFRAME_RA(sp) # save RA
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REG_S a0, CALLFRAME_SIZ(sp) # store env
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/* Get the signal mask. */
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PTR_ADDU a2, a0, _JB_SIGMASK * SZREG # &oenv
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li a0, 1 # SIG_SETBLOCK
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move a1, zero # &env == 0
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PTR_LA t9, _C_LABEL(sigprocmask) # get current signal mask
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jalr t9
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RESTORE_GP64
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REG_L a0, CALLFRAME_SIZ(sp) # restore env pointer
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REG_L ra, CALLFRAME_RA(sp) # restore RA
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PTR_ADDU sp, sp, SETJMP_FRAME_SIZE # pop stack frame
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REG_LI v0, _JB_MAGIC_SETJMP
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REG_S v0, (_JB_MAGIC * SZREG)(a0)
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REG_S ra, (_JB_REG_RA * SZREG)(a0)
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REG_S s0, (_JB_REG_S0 * SZREG)(a0)
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REG_S s1, (_JB_REG_S1 * SZREG)(a0)
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REG_S s2, (_JB_REG_S2 * SZREG)(a0)
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REG_S s3, (_JB_REG_S3 * SZREG)(a0)
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REG_S s4, (_JB_REG_S4 * SZREG)(a0)
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REG_S s5, (_JB_REG_S5 * SZREG)(a0)
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REG_S s6, (_JB_REG_S6 * SZREG)(a0)
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REG_S s7, (_JB_REG_S7 * SZREG)(a0)
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REG_S sp, (_JB_REG_SP * SZREG)(a0)
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REG_S s8, (_JB_REG_S8 * SZREG)(a0)
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#if defined(__mips_n32) || defined(__mips_n64)
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REG_S gp, (_JB_REG_GP * SZREG)(a0)
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#endif
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move v0, zero
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jr ra
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END(setjmp)
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#define LONGJMP_FRAME_SIZE (CALLFRAME_SIZ + (SZREG * 2))
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NESTED(longjmp, LONGJMP_FRAME_SIZE, ra)
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.mask 0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ)
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PIC_PROLOGUE(longjmp)
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PTR_SUBU sp, sp, LONGJMP_FRAME_SIZE # allocate stack frame
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SAVE_GP(CALLFRAME_GP)
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REG_S ra, CALLFRAME_RA(sp) # save RA
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REG_L v0, (_JB_MAGIC * SZREG)(a0)
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REG_LI t0, _JB_MAGIC_SETJMP
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bne v0, t0, botch # jump if error
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nop
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REG_S a0, CALLFRAME_SIZ(sp) # save env
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REG_S a1, (CALLFRAME_SIZ + SZREG)(sp) # save return value
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# set sigmask
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PTR_ADDU a1, a0, _JB_SIGMASK * SZREG # &set
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move a2, zero # &oset == NULL
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li a0, 3 # SIG_SETMASK
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PTR_LA t9,_C_LABEL(sigprocmask) # set current signal mask
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jal t9
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nop
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REG_L a0, CALLFRAME_SIZ(sp) # restore env
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REG_L a1, (CALLFRAME_SIZ + SZREG)(sp) # restore return value
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REG_L ra, (_JB_REG_RA * SZREG)(a0)
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REG_L s0, (_JB_REG_S0 * SZREG)(a0)
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REG_L s1, (_JB_REG_S1 * SZREG)(a0)
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REG_L s2, (_JB_REG_S2 * SZREG)(a0)
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REG_L s3, (_JB_REG_S3 * SZREG)(a0)
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REG_L s4, (_JB_REG_S4 * SZREG)(a0)
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REG_L s5, (_JB_REG_S5 * SZREG)(a0)
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REG_L s6, (_JB_REG_S6 * SZREG)(a0)
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REG_L s7, (_JB_REG_S7 * SZREG)(a0)
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REG_L sp, (_JB_REG_SP * SZREG)(a0)
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REG_L s8, (_JB_REG_S8 * SZREG)(a0)
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#if defined(__mips_n32) || defined(__mips_n64)
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REG_L gp, (_JB_REG_GP * SZREG)(a0)
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#endif
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move v0, a1
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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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PTR_LA t9, _C_LABEL(longjmperror)
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jalr t9
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nop
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PIC_TAILCALL(abort)
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END(longjmp)
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