running on 5.8 to use MAP_ANON, but because of C's lack of
introspection at runtime, we can't grab the right value because
it's stuffed in a header file somewhere. We can, however, hardcode
- it, and test at runtime for whether to use it... -- CSR, 2002-05-06
+ it, and test at runtime for whether to use it... -- CSR, 2002-05-06
And, in fact, it sucks slightly more, as if you don't use MAP_ANON
you need to have /dev/zero open and pass the file descriptor to
struct utsname name;
int major_version;
int minor_version;
-
+
uname(&name);
major_version = atoi(name.release);
if (major_version != 5) {
- lose("sunos major version=%d (which isn't 5!)", major_version);
+ lose("sunos major version=%d (which isn't 5!)", major_version);
}
minor_version = atoi(name.release+2);
- if ((minor_version == 8) ||
- (minor_version == 9) ||
- (minor_version == 10)) {
- KLUDGE_MAYBE_MAP_ANON = 0x100;
+ if ((minor_version == 8) ||
+ (minor_version == 9) ||
+ (minor_version == 10)) {
+ KLUDGE_MAYBE_MAP_ANON = 0x100;
} else if (minor_version > 10) {
- FSHOW((stderr, "os_init: Solaris version greater than 9?\nUnknown MAP_ANON behaviour.\n"));
- lose("Unknown mmap() interaction with MAP_ANON");
+ FSHOW((stderr, "os_init: Solaris version greater than 9?\nUnknown MAP_ANON behaviour.\n"));
+ lose("Unknown mmap() interaction with MAP_ANON");
} else { /* minor_version < 8 */
- kludge_mmap_fd = open("/dev/zero",O_RDONLY);
- if (kludge_mmap_fd < 0) {
- perror("open");
- lose("Error in open(..)");
- }
+ kludge_mmap_fd = open("/dev/zero",O_RDONLY);
+ if (kludge_mmap_fd < 0) {
+ perror("open");
+ lose("Error in open(..)");
+ }
}
/* I do not understand this at all. FIXME. */
os_vm_page_size = os_real_page_size = sysconf(_SC_PAGESIZE);
if(os_vm_page_size>OS_VM_DEFAULT_PAGESIZE){
- fprintf(stderr,"os_init: Pagesize too large (%d > %d)\n",
- os_vm_page_size,OS_VM_DEFAULT_PAGESIZE);
- exit(1);
+ fprintf(stderr,"os_init: Pagesize too large (%d > %d)\n",
+ os_vm_page_size,OS_VM_DEFAULT_PAGESIZE);
+ exit(1);
} else {
- /*
- * we do this because there are apparently dependencies on
- * the pagesize being OS_VM_DEFAULT_PAGESIZE somewhere...
- * but since the OS doesn't know we're using this restriction,
- * we have to grovel around a bit to enforce it, thus anything
- * that uses real_page_size_difference.
- */
- /* FIXME: Is this still true? */
- real_page_size_difference=OS_VM_DEFAULT_PAGESIZE-os_vm_page_size;
- os_vm_page_size=OS_VM_DEFAULT_PAGESIZE;
+ /*
+ * we do this because there are apparently dependencies on
+ * the pagesize being OS_VM_DEFAULT_PAGESIZE somewhere...
+ * but since the OS doesn't know we're using this restriction,
+ * we have to grovel around a bit to enforce it, thus anything
+ * that uses real_page_size_difference.
+ */
+ /* FIXME: Is this still true? */
+ real_page_size_difference=OS_VM_DEFAULT_PAGESIZE-os_vm_page_size;
+ os_vm_page_size=OS_VM_DEFAULT_PAGESIZE;
}
}
os_vm_address_t os_validate(os_vm_address_t addr, os_vm_size_t len)
{
int flags = MAP_PRIVATE | MAP_NORESERVE | KLUDGE_MAYBE_MAP_ANON;
- if (addr)
- flags |= MAP_FIXED;
+ if (addr)
+ flags |= MAP_FIXED;
- addr = mmap(addr, len,
- OS_VM_PROT_ALL,
- flags,
- kludge_mmap_fd, 0);
+ addr = mmap(addr, len,
+ OS_VM_PROT_ALL,
+ flags,
+ kludge_mmap_fd, 0);
if (addr == MAP_FAILED) {
- perror("mmap");
- lose ("Error in mmap(..)");
+ perror("mmap");
+ lose ("Error in mmap(..)");
}
-
+
return addr;
}
void os_invalidate(os_vm_address_t addr, os_vm_size_t len)
{
if(munmap((void*) addr, len) == -1)
- perror("munmap");
+ perror("munmap");
}
\f
-os_vm_address_t
+os_vm_address_t
os_map(int fd, int offset, os_vm_address_t addr, os_vm_size_t len)
{
addr = mmap(addr, len,
- OS_VM_PROT_ALL,
- MAP_PRIVATE | MAP_FIXED,
- fd, (off_t) offset);
+ OS_VM_PROT_ALL,
+ MAP_PRIVATE | MAP_FIXED,
+ fd, (off_t) offset);
if (addr == MAP_FAILED) {
- perror("mmap");
- lose("Unexpedted mmap(..) failure");
+ perror("mmap");
+ lose("Unexpedted mmap(..) failure");
}
-
+
return addr;
}
os_protect(os_vm_address_t address, os_vm_size_t length, os_vm_prot_t prot)
{
if(mprotect((void*)address, length, prot) == -1) {
- perror("mprotect");
+ perror("mprotect");
}
}
boolean is_valid_lisp_addr(os_vm_address_t addr)
{
/* Old CMUCL comment:
-
+
Just assume address is valid if it lies within one of the known
spaces. (Unlike sunos-os which keeps track of every valid page.) */
-
+
/* FIXME: this looks like a valid definition for all targets with
cheney-gc; it may not be impressively smart (witness the
comment above) but maybe associating these functions with the
in_range_p(addr, STATIC_SPACE_START , STATIC_SPACE_SIZE) ||
in_range_p(addr, DYNAMIC_0_SPACE_START, DYNAMIC_SPACE_SIZE) ||
in_range_p(addr, DYNAMIC_1_SPACE_START, DYNAMIC_SPACE_SIZE))
- return 1;
+ return 1;
for_each_thread(th) {
- if((th->control_stack_start <= addr) && (addr < th->control_stack_end))
- return 1;
- if(in_range_p(addr, th->binding_stack_start, BINDING_STACK_SIZE))
- return 1;
+ if((th->control_stack_start <= addr) && (addr < th->control_stack_end))
+ return 1;
+ if(in_range_p(addr, th->binding_stack_start, BINDING_STACK_SIZE))
+ return 1;
}
return 0;
}
addr = arch_get_bad_addr(signal, info, context);
if(!interrupt_maybe_gc(signal, info, context)) {
- if(!handle_guard_page_triggered(context,addr))
- interrupt_handle_now(signal, info, context);
+ if(!handle_guard_page_triggered(context,addr))
+ interrupt_handle_now(signal, info, context);
}
}
os_install_interrupt_handlers()
{
undoably_install_low_level_interrupt_handler(SIG_MEMORY_FAULT,
- sigsegv_handler);
+ sigsegv_handler);
}
projects / sbcl.git / blobdiff