84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
194 lines
5.2 KiB
ArmAsm
194 lines
5.2 KiB
ArmAsm
/* $NetBSD: _setjmp.S,v 1.16 2013/11/30 20:20:42 joerg Exp $ */
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/*
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* Copyright (c) 1997 Mark Brinicombe
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* All rights reserved.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Mark Brinicombe
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* 4. 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 AUTHOR 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 AUTHOR 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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#if !defined(__SOFTFP__) && !defined(__VFP_FP__) && !defined(__ARM_PCS)
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#error FPA is not supported anymore
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#endif
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#if defined(__ARM_EABI__) && !defined(__ARM_PCS_VFP)
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.fpu vfp
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#endif
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#include <machine/asm.h>
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#include <machine/setjmp.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 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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* Note: r0 is the return value
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* r1-r3,ip are scratch registers in functions
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*/
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ENTRY(_setjmp)
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ldr r1, .L_setjmp_magic
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#if defined(__ARM_EABI__) && (!defined(__thumb__) || defined(_ARM_ARCH_T2))
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ldr r2, .Lfpu_present
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#ifdef __PIC__
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add r2, r2, pc /* pc = &.LPIC0 */
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#endif
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ldr r2, [r2]
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.LPIC0:
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#if defined(__thumb__) && defined(_ARM_ARCH_T2)
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cbz r2, 1f
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#else
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cmp r2, #0 /* do we have a FPU? */
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beq 1f /* no, don't save VFP registers */
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#endif
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orrs r1, r1, #(_JB_MAGIC__SETJMP ^ _JB_MAGIC__SETJMP_VFP)
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/* change magic to VFP magic */
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adds r2, r0, #(_JB_REG_D8 * 4)
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vstmia r2, {d8-d15}
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vmrs r2, fpscr
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str r2, [r0, #(_JB_REG_FPSCR * 4)]
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1:
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#endif /* __ARM_EABI__ && (_ARM_ARCH_T2 || !__thumb__) */
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str r1, [r0]
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adds r0, r0, #(_JB_REG_R4 * 4)
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/* Store integer registers */
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#if !defined(__thumb__) || defined(_ARCH_ARCH_T2)
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stmia r0, {r4-r14}
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#else
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stmia r0!, {r4-r7}
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mov r1, r8
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mov r2, r9
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mov r3, r10
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stmia r0!, {r1-r3}
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mov r2, r11
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mov r3, r12
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stmia r0!, {r2-r3}
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mov r2, sp
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mov r3, lr
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stmia r0!, {r2-r3}
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#endif
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movs r0, #0
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RET
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#if defined(__ARM_EABI__) && (!defined(__thumb__) || defined(_ARM_ARCH_T2))
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.align 0
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.Lfpu_present:
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.word REL_SYM(_libc_arm_fpu_present, .LPIC0)
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#endif /* __ARM_EABI__ && (_ARM_ARCH_T2 || !__thumb__) */
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END(_setjmp)
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ENTRY(_longjmp)
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ldr r2, [r0] /* get magic from jmp_buf */
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#if !defined(__thumb__) || defined(_ARM_ARCH_T2)
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bics r3, r2, #(_JB_MAGIC__SETJMP ^ _JB_MAGIC__SETJMP_VFP)
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/* ignore VFP-ness of magic */
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ldr ip, .L_setjmp_magic /* load magic */
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#else
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ldr r3, .L_setjmp_magic /* load magic */
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mov ip, r3
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movs r3, #(_JB_MAGIC__SETJMP ^ _JB_MAGIC__SETJMP_VFP)
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ands r3, r3, r2
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eors r3, r3, r2 /* ignore VFP-ness of magic */
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#endif
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cmp ip, r3 /* magic correct? */
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bne botch /* no, botch */
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#if defined(__ARM_EABI__) && (!defined(__thumb__) || defined(_ARM_ARCH_T2))
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cmp r3, r2 /* did magic change? */
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beq 1f /* no, don't restore VFP */
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adds r3, r0, #(_JB_REG_D8 * 4)
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vldmia r3, {d8-d15}
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ldr r3, [r0, #(_JB_REG_FPSCR * 4)]
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vmsr fpscr, r3
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1:
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#endif /* __ARM_EABI__ && (_ARM_ARCH_T2 || !__thumb__) */
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adds r0, r0, #(_JB_REG_R4 * 4)
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/* Restore integer registers */
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#if !defined(__thumb__) || defined(_ARM_ARCH_T2)
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ldmia r0!, {r4-r12}
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#else
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ldmia r0!, {r4-r7}
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ldmia r0!, {r2-r3}
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mov r8, r2
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mov r9, r3
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ldmia r0!, {r2-r3}
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mov r10, r2
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mov r1, r3
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adds r0, r0, #4 /* skip r12 */
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#endif
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ldmia r0!, {r2-r3} /* r2 = sp, r3 = lr */
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/* Validate sp and r14 */
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#if defined(__thumb__) && defined(_ARM_ARCH_T2)
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cbz r2, botch
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#else
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cmp r2, #0
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beq botch
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#endif
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mov sp, r2
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#if defined(__thumb__) && defined(_ARM_ARCH_T2)
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cbz r3, botch
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#else
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cmp r3, #0
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beq botch
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#endif
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mov lr, r3
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/* Set return value */
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movs r0, r1
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#ifdef __thumb__
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bne 1f
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movs r0, #1
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1:
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#else
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moveq r0, #1
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#endif
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RET
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/* validation failed, die die die. */
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botch:
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bl PLT_SYM(_C_LABEL(longjmperror))
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bl PLT_SYM(_C_LABEL(abort))
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1: b 1b /* Cannot get here */
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.align 0
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.L_setjmp_magic:
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.word _JB_MAGIC__SETJMP
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END(_longjmp)
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