mirror of
https://github.com/autc04/Retro68.git
synced 2024-12-01 11:52:47 +00:00
49 lines
1.1 KiB
ArmAsm
49 lines
1.1 KiB
ArmAsm
/* 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
|