rt: Remove rust_stack

1 files changed, 0 insertions, 105 deletions

diff --git a/src/rt/rust_stack.cpp b/src/rt/rust_stack.cpp
deleted file mode 100644
index a609ac57324..00000000000
--- a/src/rt/rust_stack.cpp
+++ /dev/null
@@ -1,105 +0,0 @@
-// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-
-#include "rust_stack.h"
-#include "vg/valgrind.h"
-#include "vg/memcheck.h"
-
-#include <cstdio>
-
-#ifdef _LP64
-const uintptr_t canary_value = 0xABCDABCDABCDABCD;
-#else
-const uintptr_t canary_value = 0xABCDABCD;
-#endif
-
-void
-register_valgrind_stack(stk_seg *stk) {
-    stk->valgrind_id =
-        VALGRIND_STACK_REGISTER(&stk->data[0],
-                                stk->end);
-}
-
-void
-reuse_valgrind_stack(stk_seg *stk, uint8_t *sp) {
-    // Establish that the stack is accessible.  This must be done when reusing
-    // old stack segments, since the act of popping the stack previously
-    // caused valgrind to consider the whole thing inaccessible.
-    assert(sp >= stk->data && sp <= (uint8_t*) stk->end
-           && "Stack pointer must be inside stack segment");
-    size_t sz = stk->end - (uintptr_t)sp;
-    (void) VALGRIND_MAKE_MEM_UNDEFINED(sp, sz);
-    (void) sz;
-}
-
-void
-deregister_valgrind_stack(stk_seg *stk) {
-    VALGRIND_STACK_DEREGISTER(stk->valgrind_id);
-}
-
-void
-add_stack_canary(stk_seg *stk) {
-    stk->canary = canary_value;
-}
-
-void
-check_stack_canary(stk_seg *stk) {
-    assert(stk->canary == canary_value && "Somebody killed the canary");
-}
-
-// XXX: Duplication here between the local and exchange heap constructors
-
-stk_seg *
-create_stack(memory_region *region, size_t sz) {
-    size_t total_sz = sizeof(stk_seg) + sz;
-    stk_seg *stk = (stk_seg *)region->malloc(total_sz, "stack");
-    memset(stk, 0, sizeof(stk_seg));
-    stk->end = (uintptr_t) &stk->data[sz];
-    stk->is_big = 0;
-    add_stack_canary(stk);
-    register_valgrind_stack(stk);
-    return stk;
-}
-
-void
-destroy_stack(memory_region *region, stk_seg *stk) {
-    deregister_valgrind_stack(stk);
-    region->free(stk);
-}
-
-stk_seg *
-create_exchange_stack(rust_exchange_alloc *exchange, size_t sz) {
-    size_t total_sz = sizeof(stk_seg) + sz;
-    stk_seg *stk = (stk_seg *)exchange->malloc(total_sz);
-    memset(stk, 0, sizeof(stk_seg));
-    stk->end = (uintptr_t) &stk->data[sz];
-    stk->is_big = 0;
-    add_stack_canary(stk);
-    register_valgrind_stack(stk);
-    return stk;
-}
-
-void
-destroy_exchange_stack(rust_exchange_alloc *exchange, stk_seg *stk) {
-    deregister_valgrind_stack(stk);
-    exchange->free(stk);
-}
-
-
-extern "C" CDECL unsigned int
-rust_valgrind_stack_register(void *start, void *end) {
-  return VALGRIND_STACK_REGISTER(start, end);
-}
-
-extern "C" CDECL void
-rust_valgrind_stack_deregister(unsigned int id) {
-  VALGRIND_STACK_DEREGISTER(id);
-}