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hurd: Drop fmh kludge
Gnumach's 0650a4ee30e3 implements support for high bits being set in the mask parameter of vm_map. This allows to remove the fmh kludge that was masking away the address range by mapping a dumb area there.
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@ -66,37 +66,6 @@ void *_dl_random attribute_relro = NULL;
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struct hurd_startup_data *_dl_hurd_data;
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#define FMH defined(__i386__)
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#if ! FMH
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# define fmh() ((void)0)
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# define unfmh() ((void)0)
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#else
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/* XXX loser kludge for vm_map kernel bug, fixed by gnumach's 0650a4ee30e3 */
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#undef ELF_MACHINE_USER_ADDRESS_MASK
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#define ELF_MACHINE_USER_ADDRESS_MASK 0
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static vm_address_t fmha;
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static vm_size_t fmhs;
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static void unfmh(void){
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__vm_deallocate(__mach_task_self(),fmha,fmhs);}
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static void fmh(void) {
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error_t err;int x;vm_offset_t o;mach_port_t p;
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vm_address_t a=0x08000000U,max=VM_MAX_ADDRESS;
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while (!(err=__vm_region(__mach_task_self(),&a,&fmhs,&x,&x,&x,&x,&p,&o))){
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__mach_port_deallocate(__mach_task_self(),p);
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if (a+fmhs>=0x80000000U){
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max=a; break;}
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fmha=a+=fmhs;}
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if (err) assert(err==KERN_NO_SPACE);
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if (!fmha)fmhs=0;else{
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fmhs=max-fmha;
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err = __vm_map (__mach_task_self (),
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&fmha, fmhs, 0, 0, MACH_PORT_NULL, 0, 1,
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VM_PROT_NONE, VM_PROT_NONE, VM_INHERIT_COPY);
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assert_perror(err);}
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}
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/* XXX loser kludge for vm_map kernel bug */
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#endif
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ElfW(Addr)
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_dl_sysdep_start (void **start_argptr,
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@ -147,8 +116,6 @@ _dl_sysdep_start (void **start_argptr,
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&& _dl_hurd_data->user_entry == 0)
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_dl_hurd_data->user_entry = (vm_address_t) ENTRY_POINT;
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unfmh(); /* XXX */
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#if 0 /* XXX make this work for real someday... */
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if (_dl_hurd_data->user_entry == (vm_address_t) ENTRY_POINT)
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/* We were invoked as a command, not as the program interpreter.
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@ -257,8 +224,6 @@ unfmh(); /* XXX */
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/* Initialize frequently used global variable. */
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GLRO(dl_pagesize) = __getpagesize ();
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fmh(); /* XXX */
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/* See hurd/hurdstartup.c; this deals with getting information
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from the exec server and slicing up the arguments.
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Then it will call `go', above. */
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