2 * This is the SPARC Linux incarnation of arch-dependent OS-dependent
3 * routines. See also "linux-os.c".
7 * This software is part of the SBCL system. See the README file for
10 * This software is derived from the CMU CL system, which was
11 * written at Carnegie Mellon University and released into the
12 * public domain. The software is in the public domain and is
13 * provided with absolutely no warranty. See the COPYING and CREDITS
14 * files for more information.
18 #include <sys/param.h>
24 #include "interrupt.h"
28 #include <sys/socket.h>
29 #include <sys/utsname.h>
31 #include <sys/types.h>
38 size_t os_vm_page_size;
40 #ifdef LISP_FEATURE_SB_THREAD
41 #error "Define threading support functions"
43 struct thread *arch_os_get_current_thread() {
46 int arch_os_thread_init(struct thread *thread) {
47 return 1; /* success */
49 int arch_os_thread_cleanup(struct thread *thread) {
50 return 1; /* success */
54 os_context_register_t *
55 os_context_register_addr(os_context_t *context, int offset)
61 } else if (offset < 16) {
62 return &context->si_regs.u_regs[offset];
63 } else if (offset < 32) {
64 int *sp = (int*) context->si_regs.u_regs[14]; /* Stack Pointer */
65 return &(sp[offset-16]);
70 os_context_register_t *
71 os_context_pc_addr(os_context_t *context)
73 return &(context->si_regs.pc);
76 os_context_register_t *
77 os_context_npc_addr(os_context_t *context)
79 return &(context->si_regs.npc);
83 os_context_sigmask_addr(os_context_t *context)
85 return &(context->si_mask);
89 os_restore_fp_control(os_context_t *context)
91 /* Included here, for reference, is an attempt at the PPC
92 variant. If it weren't the case that SPARC/Linux gave a Bus
93 Error on floating point exceptions, something like this would
94 have to be done. -- CSR, 2002-07-13
96 asm ("msfsf $255, %0" : : "m"
97 (os_context_fp_control(context) &
98 ~ (FLOAT_STICKY_BITS_MASK | FLOAT_EXCEPTIONS_BYTE_MASK)));
103 os_flush_icache(os_vm_address_t address, os_vm_size_t length)
105 /* This is the same for linux and solaris, so see sparc-assem.S */
106 sparc_flush_icache(address,length);