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25 lines
739 B
C
25 lines
739 B
C
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typedef struct ucontext ucontext_t;
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struct ucontext
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{
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ulong pc; /* lr */
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ulong cr; /* mfcr */
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ulong ctr; /* mfcr */
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ulong xer; /* mfcr */
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ulong sp; /* callee saved: r1 */
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ulong toc; /* callee saved: r2 */
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ulong r3; /* first arg to function, return register: r3 */
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ulong gpr[19]; /* callee saved: r13-r31 */
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// XXX: currently do not save vector registers or floating-point state
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// ulong pad;
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// uvlong fpr[18]; /* callee saved: f14-f31 */
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// ulong vr[4*12]; /* callee saved: v20-v31, 256-bits each */
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};
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void makecontext(ucontext_t*, void(*)(void), int, ...);
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void getcontext(ucontext_t*);
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int setcontext(ucontext_t*);
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int swapcontext(ucontext_t*, ucontext_t*);
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int __setlabel(ucontext_t*);
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void __gotolabel(ucontext_t*);
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