+/*
+ * The x86 Win32 incarnation of arch-dependent OS-dependent routines.
+ * See also "win32-os.c".
+ */
+
+/*
+ * This software is part of the SBCL system. See the README file for
+ * more information.
+ *
+ * This software is derived from the CMU CL system, which was
+ * written at Carnegie Mellon University and released into the
+ * public domain. The software is in the public domain and is
+ * provided with absolutely no warranty. See the COPYING and CREDITS
+ * files for more information.
+ */
+
+#include <stdio.h>
+#include <stddef.h>
+#include <sys/param.h>
+#include <sys/file.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "os.h"
+#include "arch.h"
+#include "globals.h"
+#include "interrupt.h"
+#include "interr.h"
+#include "lispregs.h"
+#include "sbcl.h"
+
+#include <sys/types.h>
+#include "runtime.h"
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include "thread.h" /* dynamic_values_bytes */
+#include "cpputil.h"
+
+#include "validate.h"
+size_t os_vm_page_size;
+
+int arch_os_thread_init(struct thread *thread)
+{
+ {
+ void *top_exception_frame;
+ void *cur_stack_end;
+ void *cur_stack_start;
+ MEMORY_BASIC_INFORMATION stack_memory;
+
+ asm volatile ("mov %%gs:0,%0": "=r" (top_exception_frame));
+ asm volatile ("mov %%gs:8,%0": "=r" (cur_stack_end));
+
+ /* Can't pull stack start from fs:4 or fs:8 or whatever,
+ * because that's only what currently has memory behind
+ * it from being used, so do a quick VirtualQuery() and
+ * grab the AllocationBase. -AB 2006/11/25
+ */
+
+ if (!VirtualQuery(&stack_memory, &stack_memory, sizeof(stack_memory))) {
+ fprintf(stderr, "VirtualQuery: 0x%lx.\n", GetLastError());
+ lose("Could not query stack memory information.");
+ }
+
+ cur_stack_start = stack_memory.AllocationBase
+ /* OS provides its own guard page at the stack start,
+ and we have ours. Do you really want to see how they interact? */
+ + os_vm_page_size;
+
+ /* We use top_exception_frame rather than cur_stack_end to
+ * elide the last few (boring) stack entries at the bottom of
+ * the backtrace.
+ */
+ thread->control_stack_start = cur_stack_start;
+ thread->control_stack_end = cur_stack_end;
+
+#ifndef LISP_FEATURE_SB_THREAD
+ /*
+ * Theoretically, threaded SBCL binds directly against
+ * the thread structure for these values. We don't do
+ * threads yet, but we'll probably do the same. We do
+ * need to reset these, though, because they were
+ * initialized based on the wrong stack space.
+ */
+ SetSymbolValue(CONTROL_STACK_START,(lispobj)thread->control_stack_start,thread);
+ SetSymbolValue(CONTROL_STACK_END,(lispobj)thread->control_stack_end,thread);
+#endif
+ }
+
+#ifdef LISP_FEATURE_SB_THREAD
+ pthread_setspecific(specials,thread);
+#endif
+ return 1;
+}
+
+/* free any arch/os-specific resources used by thread, which is now
+ * defunct. Not called on live threads
+ */
+
+int arch_os_thread_cleanup(struct thread *thread) {
+ return 0;
+}
+
+#if defined(LISP_FEATURE_SB_THREAD)
+sigset_t *os_context_sigmask_addr(os_context_t *context)
+{
+ return &context->sigmask;
+}
+#endif
+
+os_context_register_t *
+os_context_register_addr(os_context_t *context, int offset)
+{
+ static const size_t offsets[16] = {
+ offsetof(CONTEXT,Rax),
+ offsetof(CONTEXT,Rcx),
+ offsetof(CONTEXT,Rdx),
+ offsetof(CONTEXT,Rbx),
+ offsetof(CONTEXT,Rsp),
+ offsetof(CONTEXT,Rbp),
+ offsetof(CONTEXT,Rsi),
+ offsetof(CONTEXT,Rdi),
+ offsetof(CONTEXT,R8),
+ offsetof(CONTEXT,R9),
+ offsetof(CONTEXT,R10),
+ offsetof(CONTEXT,R11),
+ offsetof(CONTEXT,R12),
+ offsetof(CONTEXT,R13),
+ offsetof(CONTEXT,R14),
+ offsetof(CONTEXT,R15),
+ };
+ return
+ (offset >= 0 && offset < 32) ?
+ ((void*)(context->win32_context)) + offsets[offset>>1] : 0;
+}
+
+os_context_register_t *
+os_context_pc_addr(os_context_t *context)
+{
+ return (void*)&context->win32_context->Rip; /* REG_EIP */
+}
+
+os_context_register_t *
+os_context_sp_addr(os_context_t *context)
+{
+ return (void*)&context->win32_context->Rsp; /* REG_UESP */
+}
+
+os_context_register_t *
+os_context_fp_addr(os_context_t *context)
+{
+ return (void*)&context->win32_context->Rbp; /* REG_EBP */
+}
+
+unsigned long
+os_context_fp_control(os_context_t *context)
+{
+ return ((((context->win32_context->FloatSave.ControlWord) & 0xffff) ^ 0x3f) |
+ (((context->win32_context->FloatSave.StatusWord) & 0xffff) << 16));
+}
+
+void
+os_restore_fp_control(os_context_t *context)
+{
+ asm ("fldcw %0" : : "m" (context->win32_context->FloatSave.ControlWord));
+}
+
+void
+os_flush_icache(os_vm_address_t address, os_vm_size_t length)
+{
+}