forked from dmitryvk/sbcl-win32-threads
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alpha-linux-os.c
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alpha-linux-os.c
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/*
* This is the Compaq/Digital Alpha Linux incarnation of
* arch-dependent OS-dependent routines. See also "linux-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.
*/
/* These header files were lifted wholesale from linux-os.c, some may
* be redundant. -- Dan Barlow ca. 2001-05-01 */
#include <stdio.h>
#include <sys/param.h>
#include <sys/file.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/socket.h>
#include <sys/utsname.h>
#include <sys/types.h>
#include <signal.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <unistd.h>
#include <asm/fpu.h>
#include "validate.h"
size_t os_vm_page_size;
#ifdef LISP_FEATURE_SB_THREAD
#error "Define threading support functions"
#else
struct thread *arch_os_get_current_thread() {
return all_threads;
}
int arch_os_thread_init(struct thread *thread) {
return 1; /* success */
}
int arch_os_thread_cleanup(struct thread *thread) {
return 1; /* success */
}
#endif
os_context_register_t *
os_context_register_addr(os_context_t *context, int offset)
{
return &context->uc_mcontext.sc_regs[offset];
}
os_context_register_t *
os_context_float_register_addr(os_context_t *context, int offset)
{
return &context->uc_mcontext.sc_fpregs[offset];
}
os_context_register_t *
os_context_pc_addr(os_context_t *context)
{
return &((context->uc_mcontext).sc_pc);
}
sigset_t *
os_context_sigmask_addr(os_context_t *context)
{
return &context->uc_sigmask;
}
unsigned long
os_context_fp_control(os_context_t *context)
{
return ieee_fpcr_to_swcr((context->uc_mcontext).sc_fpcr);
}
void
os_restore_fp_control(os_context_t *context)
{
/* FIXME: 0x7E0000 is defined as something useful in constants.h,
but without the UL, which would probably lead to 32/64-bit
errors if we simply used it here. Ugh. CSR, 2003-09-15 */
arch_set_fp_control(os_context_fp_control(context) & ~(0x7e0000UL) &
/* KLUDGE: for some reason that I don't
understand, by the time we get here the
"enable denormalized traps" bit in the fp
control word is set. Since we really don't
want to tra every time someone types
LEAST-POSITIVE-SINGLE-FLOAT into the repl,
mask that bit out. -- CSR, 2003-09-15 */
~(0x1UL<<6));
}
void os_flush_icache(os_vm_address_t address, os_vm_size_t length)
{
asm volatile ("imb" : : : "memory" );
}