1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
30 lines
525 B
C
30 lines
525 B
C
/*
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* Copyright (C) 1996 Paul Mackerras.
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*
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* NB this file must be compiled with -O2.
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*/
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int
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xmon_setjmp(long *buf)
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{
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asm ("mflr 0; stw 0,0(%0);"
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"stw 1,4(%0); stw 2,8(%0);"
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"mfcr 0; stw 0,12(%0);"
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"stmw 13,16(%0)"
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: : "r" (buf));
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/* XXX should save fp regs as well */
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return 0;
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}
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void
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xmon_longjmp(long *buf, int val)
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{
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if (val == 0)
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val = 1;
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asm ("lmw 13,16(%0);"
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"lwz 0,12(%0); mtcrf 0x38,0;"
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"lwz 0,0(%0); lwz 1,4(%0); lwz 2,8(%0);"
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"mtlr 0; mr 3,%1"
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: : "r" (buf), "r" (val));
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}
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