0.9.8.7:

[sbcl.git] / src / runtime / x86-win32-os.c

diff --git a/src/runtime/x86-win32-os.c b/src/runtime/x86-win32-os.c
new file mode 100644 (file)
index 0000000..ada97e3
--- /dev/null
+++ b/src/runtime/x86-win32-os.c
@@ -0,0 +1,175 @@
+/*
+ * 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 "./signal.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 <signal.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include "thread.h"             /* dynamic_values_bytes */
+
+
+#include "validate.h"
+size_t os_vm_page_size;
+
+int arch_os_thread_init(struct thread *thread) {
+    {
+        //unsigned long cur_stack_base;
+        //unsigned long cur_stack_end;
+        void *cur_stack_end;
+
+        //asm volatile ("movl %%fs:8,%0": "=r" (cur_stack_base));
+        //      asm volatile ("movl %%fs:4,%0": "=r" (cur_stack_end));
+
+        asm volatile ("movl %%fs:0,%0": "=r" (cur_stack_end));
+
+        //      fprintf(stderr, "#x%08lx #x%08lx.\n", cur_stack_base, cur_stack_end);
+
+        //if (cur_stack_base > thread->control_stack_start) {
+        //    cur_stack_base = thread->control_stack_start;
+        //}
+
+        //if (cur_stack_end < thread->control_stack_end) {
+        //    cur_stack_end = thread->control_stack_end;
+        //}
+
+        //      fprintf(stderr, "#x%08lx #x%08lx.\n", cur_stack_base, cur_stack_end);
+        //fflush(stderr);
+
+        //getchar();
+
+        //asm volatile ("movl %0,%%fs:8": : "r" (cur_stack_base));
+        //asm volatile ("movl %0,%%fs:4": : "r" (cur_stack_end));
+
+        thread->control_stack_end = cur_stack_end;
+    }
+
+#ifdef LISP_FEATURE_SB_THREAD
+    /* this must be called from a function that has an exclusive lock
+     * on all_threads
+     */
+    struct user_desc ldt_entry = {
+        1, 0, 0, /* index, address, length filled in later */
+        1, MODIFY_LDT_CONTENTS_DATA, 0, 0, 0, 1
+    };
+    int n;
+    get_spinlock(&modify_ldt_lock,thread);
+    n=modify_ldt(0,local_ldt_copy,sizeof local_ldt_copy);
+    /* get next free ldt entry */
+
+    if(n) {
+        u32 *p;
+        for(n=0,p=local_ldt_copy;*p;p+=LDT_ENTRY_SIZE/sizeof(u32))
+            n++;
+    }
+    ldt_entry.entry_number=n;
+    ldt_entry.base_addr=(unsigned long) thread;
+    ldt_entry.limit=dynamic_values_bytes;
+    ldt_entry.limit_in_pages=0;
+    if (modify_ldt (1, &ldt_entry, sizeof (ldt_entry)) != 0) {
+        modify_ldt_lock=0;
+        /* modify_ldt call failed: something magical is not happening */
+        return -1;
+    }
+    __asm__ __volatile__ ("movw %w0, %%fs" : : "q"
+                          ((n << 3) /* selector number */
+                           + (1 << 2) /* TI set = LDT */
+                           + 3)); /* privilege level */
+    thread->tls_cookie=n;
+    modify_ldt_lock=0;
+
+    if(n<0) return 0;
+#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;
+}
+
+os_context_register_t *
+os_context_register_addr(os_context_t *context, int offset)
+{
+    switch(offset) {
+    case reg_EAX: return &context->Eax;
+    case reg_ECX: return &context->Ecx;
+    case reg_EDX: return &context->Edx;
+    case reg_EBX: return &context->Ebx;
+    case reg_ESP: return &context->Esp;
+    case reg_EBP: return &context->Ebp;
+    case reg_ESI: return &context->Esi;
+    case reg_EDI: return &context->Edi;
+    default: return 0;
+    }
+}
+
+os_context_register_t *
+os_context_pc_addr(os_context_t *context)
+{
+    return &context->Eip; /*  REG_EIP */
+}
+
+os_context_register_t *
+os_context_sp_addr(os_context_t *context)
+{
+    return &context->Esp; /* REG_UESP */
+}
+
+os_context_register_t *
+os_context_fp_addr(os_context_t *context)
+{
+    return &context->Ebp; /* REG_EBP */
+}
+
+unsigned long
+os_context_fp_control(os_context_t *context)
+{
+    return ((((context->FloatSave.ControlWord) & 0xffff) ^ 0x3f) |
+            (((context->FloatSave.StatusWord) & 0xffff) << 16));
+}
+
+void
+os_restore_fp_control(os_context_t *context)
+{
+    asm ("fldcw %0" : : "m" (context->FloatSave.ControlWord));
+}
+
+void
+os_flush_icache(os_vm_address_t address, os_vm_size_t length)
+{
+}