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Last change
on this file since 444 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
1.1 KB
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| 1 | /* This is a simple version of setjmp and longjmp. |
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| 2 | |
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| 3 | Ian Lance Taylor, Cygnus Support, 15 July 1993. */ |
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| 4 | |
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| 5 | /* We need to save the address of the return instruction, which is in |
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| 6 | r1, as well as general register r14 through r25. If we are |
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| 7 | compiling for the 88110 with the extended register file, we also |
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| 8 | need to save registers x22 through x29. The jmp_buf should be 52 |
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| 9 | bytes long in the one case, 84 bytes in the other. */ |
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| 10 | |
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| 11 | /* int setjmp (jmp_buf); */ |
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| 12 | globl _setjmp |
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| 13 | _setjmp: |
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| 14 | st r1,r2,0 |
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| 15 | st.d r14,r2,4 |
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| 16 | st.d r16,r2,12 |
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| 17 | st.d r18,r2,20 |
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| 18 | st.d r20,r2,28 |
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| 19 | st.d r22,r2,36 |
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| 20 | st.d r24,r2,44 |
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| 21 | #ifdef __m88110__ |
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| 22 | /* These instructions are just a guess, and gas doesn't |
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| 23 | support them anyhow. */ |
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| 24 | st.d x22,r2,52 |
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| 25 | st.d x24,r2,60 |
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| 26 | st.d x26,r2,68 |
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| 27 | st.d x28,r2,76 |
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| 28 | #endif |
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| 29 | jmp r1 |
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| 30 | |
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| 31 | global _longjmp |
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| 32 | _longjmp: |
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| 33 | ld r1,r2,0 |
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| 34 | ld.d r14,r2,4 |
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| 35 | ld.d r16,r2,12 |
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| 36 | ld.d r18,r2,20 |
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| 37 | ld.d r20,r2,28 |
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| 38 | ld.d r22,r2,36 |
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| 39 | ld.d r24,r2,44 |
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| 40 | #ifdef __m88110__ |
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| 41 | /* These instructions are just a guess, and gas doesn't |
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| 42 | support them anyhow. */ |
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| 43 | ld.d x22,r2,52 |
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| 44 | ld.d x24,r2,60 |
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| 45 | ld.d x26,r2,68 |
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| 46 | ld.d x28,r2,76 |
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| 47 | #endif |
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| 48 | jmp r1 |
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