uclibc-ng/libc/sysdeps/linux/arc/__longjmp.S

/*
 * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
 *
 * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
 */

#include <sysdep.h>

;@ r0 = jump buffer from which regs will be restored
;@ r1 = value that setjmp( ) will return due to this longjmp

ENTRY(__longjmp)

	ld_s r13, [r0]
	ld_s r14, [r0,4]
	ld   r15, [r0,8]
	ld   r16, [r0,12]
	ld   r17, [r0,16]
	ld   r18, [r0,20]
	ld   r19, [r0,24]
	ld   r20, [r0,28]
	ld   r21, [r0,32]
	ld   r22, [r0,36]
	ld   r23, [r0,40]
	ld   r24, [r0,44]
	ld   r25, [r0,48]

	ld   blink, [r0,60]	; load it early enough to not stall the pipeline
	ld   fp,    [r0,52]
	ld   sp,    [r0,56]

	mov.f  r0, r1	; get the setjmp return value(due to longjmp) in place

	j.d    [blink]	; to caller of setjmp location, right after the call
	mov.z  r0, 1	; can't let setjmp return 0 when it is due to longjmp

END(__longjmp)
libc_hidden_def(__longjmp)