bef0e3eb63
swapcontext, and makecontext). - Fix VM to not erroneously think the stack segment and data segment have collided when a user-space thread invokes brk(). - Add test51 to test ucontext functionality. - Add man pages for ucontext system calls.
33 lines
668 B
C
33 lines
668 B
C
#include "syslib.h"
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PUBLIC int sys_getmcontext(proc, mcp)
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endpoint_t proc; /* process retrieving context */
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mcontext_t *mcp; /* where to store context */
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{
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/* A process wants to store its context in mcp. */
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message m;
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int r;
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m.PR_ENDPT = proc;
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m.PR_CTX_PTR = (char *) mcp;
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r = _kernel_call(SYS_GETMCONTEXT, &m);
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return r;
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}
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PUBLIC int sys_setmcontext(proc, mcp)
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endpoint_t proc; /* process setting context */
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mcontext_t *mcp; /* where to get context from */
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{
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/* A process wants to restore context stored in ucp. */
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message m;
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int r;
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m.PR_ENDPT = proc;
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m.PR_CTX_PTR = (char *) mcp;
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r = _kernel_call(SYS_SETMCONTEXT, &m);
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return r;
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}
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