setjmp.s

来自「klibc精简化的c程序库」· S 代码 · 共 81 行

#
# arch/mips/setjmp.S
#
# setjmp/longjmp for the MIPS architecture
#
# The jmp_buf is assumed to contain the following, in order:
#	s0..s7
#	gp
#	sp
#	s8
#	ra
#	f20..f31
#	fcr31
#

#include <machine/asm.h>

LEAF(setjmp)
	sw	s0,  0(a0)
	sw	s1,  4(a0)
	sw	s2,  8(a0)
	sw	s3, 12(a0)
	sw	s4, 16(a0)
	sw	s5, 20(a0)
	sw	s6, 24(a0)
	sw	s7, 28(a0)
	sw	gp, 32(a0)
	sw	sp, 36(a0)
	sw	s8, 40(a0)
	sw	ra, 44(a0)
	cfc1	t0,$31
	swc1	$f20,48(a0)
	swc1	$f21,52(a0)
	swc1	$f22,56(a0)
	swc1	$f23,60(a0)
	swc1	$f24,64(a0)
	swc1	$f25,68(a0)
	swc1	$f26,72(a0)
	swc1	$f27,76(a0)
	swc1	$f28,80(a0)
	swc1	$f29,84(a0)
	swc1	$f30,88(a0)
	swc1	$f31,92(a0)
	sw	t0,96(a0)
	move	v0,zero
	jr	ra

	END(setjmp)

LEAF(longjmp)
	lw	s0,  0(a0)
	lw	s1,  4(a0)
	lw	s2,  8(a0)
	lw	s3, 12(a0)
	lw	s4, 16(a0)
	lw	s5, 20(a0)
	lw	s6, 24(a0)
	lw	s7, 28(a0)
	lw	gp, 32(a0)
	lw	sp, 36(a0)
	lw	s8, 40(a0)
	lw	ra, 44(a0)
	lw	t0, 96(a0)
	lwc1	$f20,48(a0)
	lwc1	$f21,52(a0)
	lwc1	$f22,56(a0)
	lwc1	$f23,60(a0)
	lwc1	$f24,64(a0)
	lwc1	$f25,68(a0)
	lwc1	$f26,72(a0)
	lwc1	$f27,76(a0)
	lwc1	$f28,80(a0)
	lwc1	$f29,84(a0)
	lwc1	$f30,88(a0)
	lwc1	$f31,92(a0)
	ctc1	t0,$31
	move	v0,a1
	jr	ra

	END(longjmp)