/*
* The x86 Linux incarnation of arch-dependent OS-dependent routines.
- * See also linux-os.c
+ * See also "linux-os.c".
*/
-
-/* header files lifted wholesale from linux-os.c, some may be redundant */
+/*
+ * 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 <sys/param.h>
* gregs[], but it's conditional on __USE_GNU and not defined, so
* we need to do this nasty absolute index magic number thing
* instead. */
-register_t *
+os_context_register_t *
os_context_register_addr(os_context_t *context, int offset)
{
switch(offset) {
}
return &context->uc_mcontext.gregs[offset];
}
-register_t *
+
+os_context_register_t *
os_context_pc_addr(os_context_t *context)
{
return &context->uc_mcontext.gregs[14];
}
-register_t *
+
+os_context_register_t *
os_context_sp_addr(os_context_t *context)
{
return &context->uc_mcontext.gregs[17];
}
+unsigned long
+os_context_fp_control(os_context_t *context)
+{
+ return ((((context->uc_mcontext.fpregs->cw) & 0xffff) ^ 0x3f) |
+ (((context->uc_mcontext.fpregs->sw) & 0xffff) << 16));
+}
+
sigset_t *
os_context_sigmask_addr(os_context_t *context)
{
}
void
+os_restore_fp_control(os_context_t *context)
+{
+ asm ("fldcw %0" : : "m" (context->uc_mcontext.fpregs->cw));
+}
+
+void
os_flush_icache(os_vm_address_t address, os_vm_size_t length)
{
}