b6cbf7203b
This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
124 lines
3.7 KiB
ArmAsm
124 lines
3.7 KiB
ArmAsm
/* $NetBSD: compat_setjmp.S,v 1.1 2005/09/16 18:21:19 drochner Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1994, 1995 Carnegie-Mellon University.
|
|
* All rights reserved.
|
|
*
|
|
* Author: Chris G. Demetriou
|
|
*
|
|
* Permission to use, copy, modify and distribute this software and
|
|
* its documentation is hereby granted, provided that both the copyright
|
|
* notice and this permission notice appear in all copies of the
|
|
* software, derivative works or modified versions, and any portions
|
|
* thereof, and that both notices appear in supporting documentation.
|
|
*
|
|
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
|
|
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
|
|
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
|
*
|
|
* Carnegie Mellon requests users of this software to return to
|
|
*
|
|
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
|
* School of Computer Science
|
|
* Carnegie Mellon University
|
|
* Pittsburgh PA 15213-3890
|
|
*
|
|
* any improvements or extensions that they make and grant Carnegie the
|
|
* rights to redistribute these changes.
|
|
*/
|
|
|
|
#include <machine/asm.h>
|
|
|
|
/*
|
|
* C library -- setjmp, longjmp
|
|
*
|
|
* longjmp(a,v)
|
|
* will generate a "return(v)" from
|
|
* the last call to
|
|
* setjmp(a)
|
|
* by restoring registers from the stack,
|
|
* and the previous signal state.
|
|
*/
|
|
|
|
.set noreorder
|
|
|
|
LEAF(setjmp, 1)
|
|
LDGP(pv)
|
|
stq ra, (2 * 8)(a0) /* sc_pc = return address */
|
|
stq s0, (( 9 + 4) * 8)(a0) /* saved bits of sc_regs */
|
|
stq s1, ((10 + 4) * 8)(a0)
|
|
stq s2, ((11 + 4) * 8)(a0)
|
|
stq s3, ((12 + 4) * 8)(a0)
|
|
stq s4, ((13 + 4) * 8)(a0)
|
|
stq s5, ((14 + 4) * 8)(a0)
|
|
stq s6, ((15 + 4) * 8)(a0)
|
|
stq ra, ((26 + 4) * 8)(a0)
|
|
stq sp, ((30 + 4) * 8)(a0)
|
|
|
|
/*
|
|
* get signal information
|
|
*/
|
|
mov a0, s0 /* squirrel away ptr to sc */
|
|
|
|
/* see what's blocked */
|
|
mov zero, a0
|
|
CALL(sigblock) /* see what's blocked */
|
|
stq v0, (1 * 8)(s0) /* and remember it in sc_mask */
|
|
|
|
lda sp, -24(sp) /* sizeof struct sigaltstack */
|
|
mov zero, a0
|
|
mov sp, a1
|
|
CALL(__sigaltstack14)
|
|
ldl t0, 16(sp) /* offset of ss_flags */
|
|
lda sp, 24(sp) /* sizeof struct sigaltstack */
|
|
ldq ra, ((26 + 4) * 8)(s0) /* restore return address */
|
|
blt v0, botch /* check for error */
|
|
and t0, 0x1, t0 /* get SA_ONSTACK flag */
|
|
stq t0, (0 * 8)(s0) /* and save it in sc_onstack */
|
|
/*
|
|
* Restore old s0 and a0, and continue saving registers
|
|
*/
|
|
mov s0, a0
|
|
ldq s0, (( 9 + 4) * 8)(a0)
|
|
|
|
ldiq t0, 0xacedbade /* sigcontext magic number */
|
|
stq t0, ((31 + 4) * 8)(a0) /* magic in sc_regs[31] */
|
|
/* Too bad we can't check if we actually used FP */
|
|
ldiq t0, 1
|
|
stq t0, (36 * 8)(a0) /* say we've used FP. */
|
|
stt fs0, ((2 + 37) * 8)(a0) /* saved bits of sc_fpregs */
|
|
stt fs1, ((3 + 37) * 8)(a0)
|
|
stt fs2, ((4 + 37) * 8)(a0)
|
|
stt fs3, ((5 + 37) * 8)(a0)
|
|
stt fs4, ((6 + 37) * 8)(a0)
|
|
stt fs5, ((7 + 37) * 8)(a0)
|
|
stt fs6, ((8 + 37) * 8)(a0)
|
|
stt fs7, ((9 + 37) * 8)(a0)
|
|
mf_fpcr ft0 /* get FP control reg */
|
|
stt ft0, (69 * 8)(a0) /* and store it in sc_fpcr */
|
|
stq zero, (70 * 8)(a0) /* FP software control XXX */
|
|
stq zero, (71 * 8)(a0) /* sc_reserved[0] */
|
|
stq zero, (72 * 8)(a0) /* sc_reserved[1] */
|
|
stq zero, (73 * 8)(a0) /* sc_xxx[0] */
|
|
stq zero, (74 * 8)(a0) /* sc_xxx[1] */
|
|
stq zero, (75 * 8)(a0) /* sc_xxx[2] */
|
|
stq zero, (76 * 8)(a0) /* sc_xxx[3] */
|
|
stq zero, (77 * 8)(a0) /* sc_xxx[4] */
|
|
stq zero, (78 * 8)(a0) /* sc_xxx[5] */
|
|
stq zero, (79 * 8)(a0) /* sc_xxx[6] */
|
|
stq zero, (80 * 8)(a0) /* sc_xxx[7] */
|
|
|
|
mov zero, v0 /* return zero */
|
|
RET
|
|
END(setjmp)
|
|
|
|
LEAF(longjmp, 2)
|
|
LDGP(pv)
|
|
stq a1, (( 0 + 4) * 8)(a0) /* save return value */
|
|
CALL(sigreturn) /* use sigreturn to return */
|
|
|
|
botch:
|
|
CALL(longjmperror)
|
|
CALL(abort)
|
|
RET /* "can't" get here... */
|
|
END(longjmp)
|