newlib-cygwin/newlib/libc/machine/m88k/setjmp.S

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2000-02-18 03:39:52 +08:00
/* This is a simple version of setjmp and longjmp.
Ian Lance Taylor, Cygnus Support, 15 July 1993. */
/* We need to save the address of the return instruction, which is in
r1, as well as general register r14 through r25. If we are
compiling for the 88110 with the extended register file, we also
need to save registers x22 through x29. The jmp_buf should be 52
bytes long in the one case, 84 bytes in the other. */
/* int setjmp (jmp_buf); */
globl _setjmp
_setjmp:
st r1,r2,0
st.d r14,r2,4
st.d r16,r2,12
st.d r18,r2,20
st.d r20,r2,28
st.d r22,r2,36
st.d r24,r2,44
#ifdef __m88110__
/* These instructions are just a guess, and gas doesn't
support them anyhow. */
st.d x22,r2,52
st.d x24,r2,60
st.d x26,r2,68
st.d x28,r2,76
#endif
jmp r1
global _longjmp
_longjmp:
ld r1,r2,0
ld.d r14,r2,4
ld.d r16,r2,12
ld.d r18,r2,20
ld.d r20,r2,28
ld.d r22,r2,36
ld.d r24,r2,44
#ifdef __m88110__
/* These instructions are just a guess, and gas doesn't
support them anyhow. */
ld.d x22,r2,52
ld.d x24,r2,60
ld.d x26,r2,68
ld.d x28,r2,76
#endif
jmp r1