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-rw-r--r--lib/libc/ia64/gen/makecontext.c123
1 files changed, 0 insertions, 123 deletions
diff --git a/lib/libc/ia64/gen/makecontext.c b/lib/libc/ia64/gen/makecontext.c
deleted file mode 100644
index bee47f1..0000000
--- a/lib/libc/ia64/gen/makecontext.c
+++ /dev/null
@@ -1,123 +0,0 @@
-/*
- * Copyright (c) 2003 Marcel Moolenaar
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/types.h>
-#include <sys/ucontext.h>
-#include <machine/fpu.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-struct fdesc {
- uint64_t ip;
- uint64_t gp;
-};
-
-typedef void (*func_t)(uint64_t, uint64_t, uint64_t, uint64_t, uint64_t,
- uint64_t, uint64_t, uint64_t);
-
-static __inline uint64_t *
-spill(uint64_t *bsp, uint64_t arg)
-{
- *bsp++ = arg;
- if (((intptr_t)bsp & 0x1ff) == 0x1f8)
- *bsp++ = 0;
- return (bsp);
-}
-
-static void
-ctx_wrapper(ucontext_t *ucp, func_t func, uint64_t *args)
-{
-
- (*func)(args[0], args[1], args[2], args[3], args[4], args[5], args[6],
- args[7]);
- if (ucp->uc_link == NULL)
- exit(0);
- setcontext((const ucontext_t *)ucp->uc_link);
- /* should never get here */
- abort();
- /* NOTREACHED */
-}
-
-__weak_reference(__makecontext, makecontext);
-
-void
-__makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
-{
- uint64_t *args, *bsp;
- va_list ap;
- int i;
-
- /*
- * Drop the ball completely if something's not right. We only
- * support general registers as arguments and not more than 8
- * of them. Things get hairy if we need to support FP registers
- * (alignment issues) or more than 8 arguments (stack based).
- */
- if (argc < 0 || argc > 8 || ucp == NULL ||
- ucp->uc_stack.ss_sp == NULL || (ucp->uc_stack.ss_size & 15) ||
- ((intptr_t)ucp->uc_stack.ss_sp & 15) ||
- ucp->uc_stack.ss_size < MINSIGSTKSZ)
- abort();
-
- /*
- * Copy the arguments of function 'func' onto the (memory) stack.
- * Always take up space for 8 arguments.
- */
- va_start(ap, argc);
- args = (uint64_t*)(ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size) - 8;
- i = 0;
- while (i < argc)
- args[i++] = va_arg(ap, uint64_t);
- while (i < 8)
- args[i++] = 0;
- va_end(ap);
-
- /*
- * Push (spill) the arguments of the context wrapper onto the register
- * stack. They get loaded by the RSE on a context switch.
- */
- bsp = (uint64_t*)ucp->uc_stack.ss_sp;
- bsp = spill(bsp, (intptr_t)ucp);
- bsp = spill(bsp, (intptr_t)func);
- bsp = spill(bsp, (intptr_t)args);
-
- /*
- * Setup the MD portion of the context.
- */
- memset(&ucp->uc_mcontext, 0, sizeof(ucp->uc_mcontext));
- ucp->uc_mcontext.mc_special.sp = (intptr_t)args - 16;
- ucp->uc_mcontext.mc_special.bspstore = (intptr_t)bsp;
- ucp->uc_mcontext.mc_special.pfs = (3 << 7) | 3;
- ucp->uc_mcontext.mc_special.rsc = 0xf;
- ucp->uc_mcontext.mc_special.rp = ((struct fdesc*)ctx_wrapper)->ip;
- ucp->uc_mcontext.mc_special.gp = ((struct fdesc*)ctx_wrapper)->gp;
- ucp->uc_mcontext.mc_special.fpsr = IA64_FPSR_DEFAULT;
-}
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