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#include <sysdep.h>
#include <sys/asm.h>
#include <sys/ucontext.h>
#include <stdarg.h>
#include <assert.h>
void __makecontext (ucontext_t *ucp, void (*func) (void), int argc,
long a0, long a1, long a2, long a3, long a4, ...)
{
extern void __start_context(void) attribute_hidden;
long i, sp;
va_list vl;
va_start(vl, a4);
assert(REG_NARGS == 8);
/* Set up the stack. */
sp = ((long)ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size) & ALMASK;
/* Put args in a0-a7, then put any remaining args on the stack. */
ucp->uc_mcontext.gregs[REG_A0 + 0] = a0;
ucp->uc_mcontext.gregs[REG_A0 + 1] = a1;
ucp->uc_mcontext.gregs[REG_A0 + 2] = a2;
ucp->uc_mcontext.gregs[REG_A0 + 3] = a3;
ucp->uc_mcontext.gregs[REG_A0 + 4] = a4;
if (__builtin_expect(argc > 5, 0))
{
long reg_args = argc < REG_NARGS ? argc : REG_NARGS;
sp = (sp - (argc - reg_args) * sizeof(long)) & ALMASK;
for (i = 5; i < reg_args; i++)
ucp->uc_mcontext.gregs[REG_A0 + i] = va_arg(vl, long);
for (i = 0; i < argc - reg_args; i++)
((long*)sp)[i] = va_arg(vl, long);
}
ucp->uc_mcontext.gregs[REG_S0] = (long)ucp->uc_link;
ucp->uc_mcontext.gregs[REG_SP] = sp;
ucp->uc_mcontext.gregs[REG_PC] = (long)func;
ucp->uc_mcontext.gregs[REG_RA] = (long)&__start_context;
va_end(vl);
}
weak_alias (__makecontext, makecontext)
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