aboutsummaryrefslogtreecommitdiffstats
path: root/arch/ia64/ia32/ia32priv.h
diff options
context:
space:
mode:
authorTony Luck <tony.luck@intel.com>2010-02-08 13:42:17 -0500
committerTony Luck <tony.luck@intel.com>2010-02-08 13:42:17 -0500
commit32974ad4907cdde6c9de612cd1b2ee0568fb9409 (patch)
tree46d883f7f4fb3f4a5cee8ec9eb2c6b4939d7ae10 /arch/ia64/ia32/ia32priv.h
parent6339204ecc2aa2067a99595522de0403f0854bb8 (diff)
[IA64] Remove COMPAT_IA32 support
This has been broken since May 2008 when Al Viro killed altroot support. Since nobody has complained, it would appear that there are no users of this code (A plausible theory since the main OSVs that support ia64 prefer to use the IA32-EL software emulation). Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/ia32/ia32priv.h')
-rw-r--r--arch/ia64/ia32/ia32priv.h532
1 files changed, 0 insertions, 532 deletions
diff --git a/arch/ia64/ia32/ia32priv.h b/arch/ia64/ia32/ia32priv.h
deleted file mode 100644
index 0f15349c3c6b..000000000000
--- a/arch/ia64/ia32/ia32priv.h
+++ /dev/null
@@ -1,532 +0,0 @@
1#ifndef _ASM_IA64_IA32_PRIV_H
2#define _ASM_IA64_IA32_PRIV_H
3
4
5#include <asm/ia32.h>
6
7#ifdef CONFIG_IA32_SUPPORT
8
9#include <linux/binfmts.h>
10#include <linux/compat.h>
11#include <linux/rbtree.h>
12
13#include <asm/processor.h>
14
15/*
16 * 32 bit structures for IA32 support.
17 */
18
19#define IA32_PAGE_SIZE (1UL << IA32_PAGE_SHIFT)
20#define IA32_PAGE_MASK (~(IA32_PAGE_SIZE - 1))
21#define IA32_PAGE_ALIGN(addr) (((addr) + IA32_PAGE_SIZE - 1) & IA32_PAGE_MASK)
22#define IA32_CLOCKS_PER_SEC 100 /* Cast in stone for IA32 Linux */
23
24/*
25 * partially mapped pages provide precise accounting of which 4k sub pages
26 * are mapped and which ones are not, thereby improving IA-32 compatibility.
27 */
28struct ia64_partial_page {
29 struct ia64_partial_page *next; /* linked list, sorted by address */
30 struct rb_node pp_rb;
31 /* 64K is the largest "normal" page supported by ia64 ABI. So 4K*64
32 * should suffice.*/
33 unsigned long bitmap;
34 unsigned int base;
35};
36
37struct ia64_partial_page_list {
38 struct ia64_partial_page *pp_head; /* list head, points to the lowest
39 * addressed partial page */
40 struct rb_root ppl_rb;
41 struct ia64_partial_page *pp_hint; /* pp_hint->next is the last
42 * accessed partial page */
43 atomic_t pp_count; /* reference count */
44};
45
46#if PAGE_SHIFT > IA32_PAGE_SHIFT
47struct ia64_partial_page_list* ia32_init_pp_list (void);
48#else
49# define ia32_init_pp_list() 0
50#endif
51
52/* sigcontext.h */
53/*
54 * As documented in the iBCS2 standard..
55 *
56 * The first part of "struct _fpstate" is just the
57 * normal i387 hardware setup, the extra "status"
58 * word is used to save the coprocessor status word
59 * before entering the handler.
60 */
61struct _fpreg_ia32 {
62 unsigned short significand[4];
63 unsigned short exponent;
64};
65
66struct _fpxreg_ia32 {
67 unsigned short significand[4];
68 unsigned short exponent;
69 unsigned short padding[3];
70};
71
72struct _xmmreg_ia32 {
73 unsigned int element[4];
74};
75
76
77struct _fpstate_ia32 {
78 unsigned int cw,
79 sw,
80 tag,
81 ipoff,
82 cssel,
83 dataoff,
84 datasel;
85 struct _fpreg_ia32 _st[8];
86 unsigned short status;
87 unsigned short magic; /* 0xffff = regular FPU data only */
88
89 /* FXSR FPU environment */
90 unsigned int _fxsr_env[6]; /* FXSR FPU env is ignored */
91 unsigned int mxcsr;
92 unsigned int reserved;
93 struct _fpxreg_ia32 _fxsr_st[8]; /* FXSR FPU reg data is ignored */
94 struct _xmmreg_ia32 _xmm[8];
95 unsigned int padding[56];
96};
97
98struct sigcontext_ia32 {
99 unsigned short gs, __gsh;
100 unsigned short fs, __fsh;
101 unsigned short es, __esh;
102 unsigned short ds, __dsh;
103 unsigned int edi;
104 unsigned int esi;
105 unsigned int ebp;
106 unsigned int esp;
107 unsigned int ebx;
108 unsigned int edx;
109 unsigned int ecx;
110 unsigned int eax;
111 unsigned int trapno;
112 unsigned int err;
113 unsigned int eip;
114 unsigned short cs, __csh;
115 unsigned int eflags;
116 unsigned int esp_at_signal;
117 unsigned short ss, __ssh;
118 unsigned int fpstate; /* really (struct _fpstate_ia32 *) */
119 unsigned int oldmask;
120 unsigned int cr2;
121};
122
123/* user.h */
124/*
125 * IA32 (Pentium III/4) FXSR, SSE support
126 *
127 * Provide support for the GDB 5.0+ PTRACE_{GET|SET}FPXREGS requests for
128 * interacting with the FXSR-format floating point environment. Floating
129 * point data can be accessed in the regular format in the usual manner,
130 * and both the standard and SIMD floating point data can be accessed via
131 * the new ptrace requests. In either case, changes to the FPU environment
132 * will be reflected in the task's state as expected.
133 */
134struct ia32_user_i387_struct {
135 int cwd;
136 int swd;
137 int twd;
138 int fip;
139 int fcs;
140 int foo;
141 int fos;
142 /* 8*10 bytes for each FP-reg = 80 bytes */
143 struct _fpreg_ia32 st_space[8];
144};
145
146struct ia32_user_fxsr_struct {
147 unsigned short cwd;
148 unsigned short swd;
149 unsigned short twd;
150 unsigned short fop;
151 int fip;
152 int fcs;
153 int foo;
154 int fos;
155 int mxcsr;
156 int reserved;
157 int st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */
158 int xmm_space[32]; /* 8*16 bytes for each XMM-reg = 128 bytes */
159 int padding[56];
160};
161
162/* signal.h */
163#define IA32_SET_SA_HANDLER(ka,handler,restorer) \
164 ((ka)->sa.sa_handler = (__sighandler_t) \
165 (((unsigned long)(restorer) << 32) \
166 | ((handler) & 0xffffffff)))
167#define IA32_SA_HANDLER(ka) ((unsigned long) (ka)->sa.sa_handler & 0xffffffff)
168#define IA32_SA_RESTORER(ka) ((unsigned long) (ka)->sa.sa_handler >> 32)
169
170#define __IA32_NR_sigreturn 119
171#define __IA32_NR_rt_sigreturn 173
172
173struct sigaction32 {
174 unsigned int sa_handler; /* Really a pointer, but need to deal with 32 bits */
175 unsigned int sa_flags;
176 unsigned int sa_restorer; /* Another 32 bit pointer */
177 compat_sigset_t sa_mask; /* A 32 bit mask */
178};
179
180struct old_sigaction32 {
181 unsigned int sa_handler; /* Really a pointer, but need to deal
182 with 32 bits */
183 compat_old_sigset_t sa_mask; /* A 32 bit mask */
184 unsigned int sa_flags;
185 unsigned int sa_restorer; /* Another 32 bit pointer */
186};
187
188typedef struct sigaltstack_ia32 {
189 unsigned int ss_sp;
190 int ss_flags;
191 unsigned int ss_size;
192} stack_ia32_t;
193
194struct ucontext_ia32 {
195 unsigned int uc_flags;
196 unsigned int uc_link;
197 stack_ia32_t uc_stack;
198 struct sigcontext_ia32 uc_mcontext;
199 sigset_t uc_sigmask; /* mask last for extensibility */
200};
201
202struct stat64 {
203 unsigned long long st_dev;
204 unsigned char __pad0[4];
205 unsigned int __st_ino;
206 unsigned int st_mode;
207 unsigned int st_nlink;
208 unsigned int st_uid;
209 unsigned int st_gid;
210 unsigned long long st_rdev;
211 unsigned char __pad3[4];
212 unsigned int st_size_lo;
213 unsigned int st_size_hi;
214 unsigned int st_blksize;
215 unsigned int st_blocks; /* Number 512-byte blocks allocated. */
216 unsigned int __pad4; /* future possible st_blocks high bits */
217 unsigned int st_atime;
218 unsigned int st_atime_nsec;
219 unsigned int st_mtime;
220 unsigned int st_mtime_nsec;
221 unsigned int st_ctime;
222 unsigned int st_ctime_nsec;
223 unsigned int st_ino_lo;
224 unsigned int st_ino_hi;
225};
226
227typedef struct compat_siginfo {
228 int si_signo;
229 int si_errno;
230 int si_code;
231
232 union {
233 int _pad[((128/sizeof(int)) - 3)];
234
235 /* kill() */
236 struct {
237 unsigned int _pid; /* sender's pid */
238 unsigned int _uid; /* sender's uid */
239 } _kill;
240
241 /* POSIX.1b timers */
242 struct {
243 compat_timer_t _tid; /* timer id */
244 int _overrun; /* overrun count */
245 char _pad[sizeof(unsigned int) - sizeof(int)];
246 compat_sigval_t _sigval; /* same as below */
247 int _sys_private; /* not to be passed to user */
248 } _timer;
249
250 /* POSIX.1b signals */
251 struct {
252 unsigned int _pid; /* sender's pid */
253 unsigned int _uid; /* sender's uid */
254 compat_sigval_t _sigval;
255 } _rt;
256
257 /* SIGCHLD */
258 struct {
259 unsigned int _pid; /* which child */
260 unsigned int _uid; /* sender's uid */
261 int _status; /* exit code */
262 compat_clock_t _utime;
263 compat_clock_t _stime;
264 } _sigchld;
265
266 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
267 struct {
268 unsigned int _addr; /* faulting insn/memory ref. */
269 } _sigfault;
270
271 /* SIGPOLL */
272 struct {
273 int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
274 int _fd;
275 } _sigpoll;
276 } _sifields;
277} compat_siginfo_t;
278
279/*
280 * IA-32 ELF specific definitions for IA-64.
281 */
282
283#define _ASM_IA64_ELF_H /* Don't include elf.h */
284
285#include <linux/sched.h>
286
287/*
288 * This is used to ensure we don't load something for the wrong architecture.
289 */
290#define elf_check_arch(x) ((x)->e_machine == EM_386)
291
292/*
293 * These are used to set parameters in the core dumps.
294 */
295#define ELF_CLASS ELFCLASS32
296#define ELF_DATA ELFDATA2LSB
297#define ELF_ARCH EM_386
298
299#define IA32_STACK_TOP IA32_PAGE_OFFSET
300#define IA32_GATE_OFFSET IA32_PAGE_OFFSET
301#define IA32_GATE_END IA32_PAGE_OFFSET + PAGE_SIZE
302
303/*
304 * The system segments (GDT, TSS, LDT) have to be mapped below 4GB so the IA-32 engine can
305 * access them.
306 */
307#define IA32_GDT_OFFSET (IA32_PAGE_OFFSET + PAGE_SIZE)
308#define IA32_TSS_OFFSET (IA32_PAGE_OFFSET + 2*PAGE_SIZE)
309#define IA32_LDT_OFFSET (IA32_PAGE_OFFSET + 3*PAGE_SIZE)
310
311#define ELF_EXEC_PAGESIZE IA32_PAGE_SIZE
312
313/*
314 * This is the location that an ET_DYN program is loaded if exec'ed.
315 * Typical use of this is to invoke "./ld.so someprog" to test out a
316 * new version of the loader. We need to make sure that it is out of
317 * the way of the program that it will "exec", and that there is
318 * sufficient room for the brk.
319 */
320#define ELF_ET_DYN_BASE (IA32_PAGE_OFFSET/3 + 0x1000000)
321
322void ia64_elf32_init(struct pt_regs *regs);
323#define ELF_PLAT_INIT(_r, load_addr) ia64_elf32_init(_r)
324
325/* This macro yields a bitmask that programs can use to figure out
326 what instruction set this CPU supports. */
327#define ELF_HWCAP 0
328
329/* This macro yields a string that ld.so will use to load
330 implementation specific libraries for optimization. Not terribly
331 relevant until we have real hardware to play with... */
332#define ELF_PLATFORM NULL
333
334#ifdef __KERNEL__
335# define SET_PERSONALITY(EX) \
336 (current->personality = PER_LINUX)
337#endif
338
339#define IA32_EFLAG 0x200
340
341/*
342 * IA-32 ELF specific definitions for IA-64.
343 */
344
345#define __USER_CS 0x23
346#define __USER_DS 0x2B
347
348/*
349 * The per-cpu GDT has 32 entries: see <asm-i386/segment.h>
350 */
351#define GDT_ENTRIES 32
352
353#define GDT_SIZE (GDT_ENTRIES * 8)
354
355#define TSS_ENTRY 14
356#define LDT_ENTRY (TSS_ENTRY + 1)
357
358#define IA32_SEGSEL_RPL (0x3 << 0)
359#define IA32_SEGSEL_TI (0x1 << 2)
360#define IA32_SEGSEL_INDEX_SHIFT 3
361
362#define _TSS ((unsigned long) TSS_ENTRY << IA32_SEGSEL_INDEX_SHIFT)
363#define _LDT ((unsigned long) LDT_ENTRY << IA32_SEGSEL_INDEX_SHIFT)
364
365#define IA32_SEG_BASE 16
366#define IA32_SEG_TYPE 40
367#define IA32_SEG_SYS 44
368#define IA32_SEG_DPL 45
369#define IA32_SEG_P 47
370#define IA32_SEG_HIGH_LIMIT 48
371#define IA32_SEG_AVL 52
372#define IA32_SEG_DB 54
373#define IA32_SEG_G 55
374#define IA32_SEG_HIGH_BASE 56
375
376#define IA32_SEG_DESCRIPTOR(base, limit, segtype, nonsysseg, dpl, segpresent, avl, segdb, gran) \
377 (((limit) & 0xffff) \
378 | (((unsigned long) (base) & 0xffffff) << IA32_SEG_BASE) \
379 | ((unsigned long) (segtype) << IA32_SEG_TYPE) \
380 | ((unsigned long) (nonsysseg) << IA32_SEG_SYS) \
381 | ((unsigned long) (dpl) << IA32_SEG_DPL) \
382 | ((unsigned long) (segpresent) << IA32_SEG_P) \
383 | ((((unsigned long) (limit) >> 16) & 0xf) << IA32_SEG_HIGH_LIMIT) \
384 | ((unsigned long) (avl) << IA32_SEG_AVL) \
385 | ((unsigned long) (segdb) << IA32_SEG_DB) \
386 | ((unsigned long) (gran) << IA32_SEG_G) \
387 | ((((unsigned long) (base) >> 24) & 0xff) << IA32_SEG_HIGH_BASE))
388
389#define SEG_LIM 32
390#define SEG_TYPE 52
391#define SEG_SYS 56
392#define SEG_DPL 57
393#define SEG_P 59
394#define SEG_AVL 60
395#define SEG_DB 62
396#define SEG_G 63
397
398/* Unscramble an IA-32 segment descriptor into the IA-64 format. */
399#define IA32_SEG_UNSCRAMBLE(sd) \
400 ( (((sd) >> IA32_SEG_BASE) & 0xffffff) | ((((sd) >> IA32_SEG_HIGH_BASE) & 0xff) << 24) \
401 | ((((sd) & 0xffff) | ((((sd) >> IA32_SEG_HIGH_LIMIT) & 0xf) << 16)) << SEG_LIM) \
402 | ((((sd) >> IA32_SEG_TYPE) & 0xf) << SEG_TYPE) \
403 | ((((sd) >> IA32_SEG_SYS) & 0x1) << SEG_SYS) \
404 | ((((sd) >> IA32_SEG_DPL) & 0x3) << SEG_DPL) \
405 | ((((sd) >> IA32_SEG_P) & 0x1) << SEG_P) \
406 | ((((sd) >> IA32_SEG_AVL) & 0x1) << SEG_AVL) \
407 | ((((sd) >> IA32_SEG_DB) & 0x1) << SEG_DB) \
408 | ((((sd) >> IA32_SEG_G) & 0x1) << SEG_G))
409
410#define IA32_IOBASE 0x2000000000000000UL /* Virtual address for I/O space */
411
412#define IA32_CR0 0x80000001 /* Enable PG and PE bits */
413#define IA32_CR4 0x600 /* MMXEX and FXSR on */
414
415/*
416 * IA32 floating point control registers starting values
417 */
418
419#define IA32_FSR_DEFAULT 0x55550000 /* set all tag bits */
420#define IA32_FCR_DEFAULT 0x17800000037fUL /* extended precision, all masks */
421
422#define IA32_PTRACE_GETREGS 12
423#define IA32_PTRACE_SETREGS 13
424#define IA32_PTRACE_GETFPREGS 14
425#define IA32_PTRACE_SETFPREGS 15
426#define IA32_PTRACE_GETFPXREGS 18
427#define IA32_PTRACE_SETFPXREGS 19
428
429#define ia32_start_thread(regs,new_ip,new_sp) do { \
430 set_fs(USER_DS); \
431 ia64_psr(regs)->cpl = 3; /* set user mode */ \
432 ia64_psr(regs)->ri = 0; /* clear return slot number */ \
433 ia64_psr(regs)->is = 1; /* IA-32 instruction set */ \
434 regs->cr_iip = new_ip; \
435 regs->ar_rsc = 0xc; /* enforced lazy mode, priv. level 3 */ \
436 regs->ar_rnat = 0; \
437 regs->loadrs = 0; \
438 regs->r12 = new_sp; \
439} while (0)
440
441/*
442 * Local Descriptor Table (LDT) related declarations.
443 */
444
445#define IA32_LDT_ENTRIES 8192 /* Maximum number of LDT entries supported. */
446#define IA32_LDT_ENTRY_SIZE 8 /* The size of each LDT entry. */
447
448#define LDT_entry_a(info) \
449 ((((info)->base_addr & 0x0000ffff) << 16) | ((info)->limit & 0x0ffff))
450
451#define LDT_entry_b(info) \
452 (((info)->base_addr & 0xff000000) | \
453 (((info)->base_addr & 0x00ff0000) >> 16) | \
454 ((info)->limit & 0xf0000) | \
455 (((info)->read_exec_only ^ 1) << 9) | \
456 ((info)->contents << 10) | \
457 (((info)->seg_not_present ^ 1) << 15) | \
458 ((info)->seg_32bit << 22) | \
459 ((info)->limit_in_pages << 23) | \
460 ((info)->useable << 20) | \
461 0x7100)
462
463#define LDT_empty(info) ( \
464 (info)->base_addr == 0 && \
465 (info)->limit == 0 && \
466 (info)->contents == 0 && \
467 (info)->read_exec_only == 1 && \
468 (info)->seg_32bit == 0 && \
469 (info)->limit_in_pages == 0 && \
470 (info)->seg_not_present == 1 && \
471 (info)->useable == 0 )
472
473static inline void
474load_TLS (struct thread_struct *t, unsigned int cpu)
475{
476 extern unsigned long *cpu_gdt_table[NR_CPUS];
477
478 memcpy(cpu_gdt_table[cpu] + GDT_ENTRY_TLS_MIN + 0, &t->tls_array[0], sizeof(long));
479 memcpy(cpu_gdt_table[cpu] + GDT_ENTRY_TLS_MIN + 1, &t->tls_array[1], sizeof(long));
480 memcpy(cpu_gdt_table[cpu] + GDT_ENTRY_TLS_MIN + 2, &t->tls_array[2], sizeof(long));
481}
482
483struct ia32_user_desc {
484 unsigned int entry_number;
485 unsigned int base_addr;
486 unsigned int limit;
487 unsigned int seg_32bit:1;
488 unsigned int contents:2;
489 unsigned int read_exec_only:1;
490 unsigned int limit_in_pages:1;
491 unsigned int seg_not_present:1;
492 unsigned int useable:1;
493};
494
495struct linux_binprm;
496
497extern void ia32_init_addr_space (struct pt_regs *regs);
498extern int ia32_setup_arg_pages (struct linux_binprm *bprm, int exec_stack);
499extern unsigned long ia32_do_mmap (struct file *, unsigned long, unsigned long, int, int, loff_t);
500extern void ia32_load_segment_descriptors (struct task_struct *task);
501
502#define ia32f2ia64f(dst,src) \
503do { \
504 ia64_ldfe(6,src); \
505 ia64_stop(); \
506 ia64_stf_spill(dst, 6); \
507} while(0)
508
509#define ia64f2ia32f(dst,src) \
510do { \
511 ia64_ldf_fill(6, src); \
512 ia64_stop(); \
513 ia64_stfe(dst, 6); \
514} while(0)
515
516struct user_regs_struct32 {
517 __u32 ebx, ecx, edx, esi, edi, ebp, eax;
518 unsigned short ds, __ds, es, __es;
519 unsigned short fs, __fs, gs, __gs;
520 __u32 orig_eax, eip;
521 unsigned short cs, __cs;
522 __u32 eflags, esp;
523 unsigned short ss, __ss;
524};
525
526/* Prototypes for use in elfcore32.h */
527extern int save_ia32_fpstate (struct task_struct *, struct ia32_user_i387_struct __user *);
528extern int save_ia32_fpxstate (struct task_struct *, struct ia32_user_fxsr_struct __user *);
529
530#endif /* !CONFIG_IA32_SUPPORT */
531
532#endif /* _ASM_IA64_IA32_PRIV_H */
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-06 00:51:11 -0400