ia64/linux-2.6.18-xen.hg

view include/asm-m68k/math-emu.h @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 831230e53067
children
line source
1 #ifndef _ASM_M68K_SETUP_H
2 #define _ASM_M68K_SETUP_H
4 #include <asm/setup.h>
5 #include <linux/linkage.h>
7 /* Status Register bits */
9 /* accrued exception bits */
10 #define FPSR_AEXC_INEX 3
11 #define FPSR_AEXC_DZ 4
12 #define FPSR_AEXC_UNFL 5
13 #define FPSR_AEXC_OVFL 6
14 #define FPSR_AEXC_IOP 7
16 /* exception status bits */
17 #define FPSR_EXC_INEX1 8
18 #define FPSR_EXC_INEX2 9
19 #define FPSR_EXC_DZ 10
20 #define FPSR_EXC_UNFL 11
21 #define FPSR_EXC_OVFL 12
22 #define FPSR_EXC_OPERR 13
23 #define FPSR_EXC_SNAN 14
24 #define FPSR_EXC_BSUN 15
26 /* quotient byte, assumes big-endian, of course */
27 #define FPSR_QUOTIENT(fpsr) (*((signed char *) &(fpsr) + 1))
29 /* condition code bits */
30 #define FPSR_CC_NAN 24
31 #define FPSR_CC_INF 25
32 #define FPSR_CC_Z 26
33 #define FPSR_CC_NEG 27
36 /* Control register bits */
38 /* rounding mode */
39 #define FPCR_ROUND_RN 0 /* round to nearest/even */
40 #define FPCR_ROUND_RZ 1 /* round to zero */
41 #define FPCR_ROUND_RM 2 /* minus infinity */
42 #define FPCR_ROUND_RP 3 /* plus infinity */
44 /* rounding precision */
45 #define FPCR_PRECISION_X 0 /* long double */
46 #define FPCR_PRECISION_S 1 /* double */
47 #define FPCR_PRECISION_D 2 /* float */
50 /* Flags to select the debugging output */
51 #define PDECODE 0
52 #define PEXECUTE 1
53 #define PCONV 2
54 #define PNORM 3
55 #define PREGISTER 4
56 #define PINSTR 5
57 #define PUNIMPL 6
58 #define PMOVEM 7
60 #define PMDECODE (1<<PDECODE)
61 #define PMEXECUTE (1<<PEXECUTE)
62 #define PMCONV (1<<PCONV)
63 #define PMNORM (1<<PNORM)
64 #define PMREGISTER (1<<PREGISTER)
65 #define PMINSTR (1<<PINSTR)
66 #define PMUNIMPL (1<<PUNIMPL)
67 #define PMMOVEM (1<<PMOVEM)
69 #ifndef __ASSEMBLY__
71 #include <linux/kernel.h>
72 #include <linux/sched.h>
74 union fp_mant64 {
75 unsigned long long m64;
76 unsigned long m32[2];
77 };
79 union fp_mant128 {
80 unsigned long long m64[2];
81 unsigned long m32[4];
82 };
84 /* internal representation of extended fp numbers */
85 struct fp_ext {
86 unsigned char lowmant;
87 unsigned char sign;
88 unsigned short exp;
89 union fp_mant64 mant;
90 };
92 /* C representation of FPU registers */
93 /* NOTE: if you change this, you have to change the assembler offsets
94 below and the size in <asm/fpu.h>, too */
95 struct fp_data {
96 struct fp_ext fpreg[8];
97 unsigned int fpcr;
98 unsigned int fpsr;
99 unsigned int fpiar;
100 unsigned short prec;
101 unsigned short rnd;
102 struct fp_ext temp[2];
103 };
105 #ifdef FPU_EMU_DEBUG
106 extern unsigned int fp_debugprint;
108 #define dprint(bit, fmt, args...) ({ \
109 if (fp_debugprint & (1 << (bit))) \
110 printk(fmt, ## args); \
111 })
112 #else
113 #define dprint(bit, fmt, args...)
114 #endif
116 #define uprint(str) ({ \
117 static int __count = 3; \
118 \
119 if (__count > 0) { \
120 printk("You just hit an unimplemented " \
121 "fpu instruction (%s)\n", str); \
122 printk("Please report this to ....\n"); \
123 __count--; \
124 } \
125 })
127 #define FPDATA ((struct fp_data *)current->thread.fp)
129 #else /* __ASSEMBLY__ */
131 #define FPDATA %a2
133 /* offsets from the base register to the floating point data in the task struct */
134 #define FPD_FPREG (TASK_THREAD+THREAD_FPREG+0)
135 #define FPD_FPCR (TASK_THREAD+THREAD_FPREG+96)
136 #define FPD_FPSR (TASK_THREAD+THREAD_FPREG+100)
137 #define FPD_FPIAR (TASK_THREAD+THREAD_FPREG+104)
138 #define FPD_PREC (TASK_THREAD+THREAD_FPREG+108)
139 #define FPD_RND (TASK_THREAD+THREAD_FPREG+110)
140 #define FPD_TEMPFP1 (TASK_THREAD+THREAD_FPREG+112)
141 #define FPD_TEMPFP2 (TASK_THREAD+THREAD_FPREG+124)
142 #define FPD_SIZEOF (TASK_THREAD+THREAD_FPREG+136)
144 /* offsets on the stack to access saved registers,
145 * these are only used during instruction decoding
146 * where we always know how deep we're on the stack.
147 */
148 #define FPS_DO (PT_D0)
149 #define FPS_D1 (PT_D1)
150 #define FPS_D2 (PT_D2)
151 #define FPS_A0 (PT_A0)
152 #define FPS_A1 (PT_A1)
153 #define FPS_A2 (PT_A2)
154 #define FPS_SR (PT_SR)
155 #define FPS_PC (PT_PC)
156 #define FPS_EA (PT_PC+6)
157 #define FPS_PC2 (PT_PC+10)
159 .macro fp_get_fp_reg
160 lea (FPD_FPREG,FPDATA,%d0.w*4),%a0
161 lea (%a0,%d0.w*8),%a0
162 .endm
164 /* Macros used to get/put the current program counter.
165 * 020/030 use a different stack frame then 040/060, for the
166 * 040/060 the return pc points already to the next location,
167 * so this only needs to be modified for jump instructions.
168 */
169 .macro fp_get_pc dest
170 move.l (FPS_PC+4,%sp),\dest
171 .endm
173 .macro fp_put_pc src,jump=0
174 move.l \src,(FPS_PC+4,%sp)
175 .endm
177 .macro fp_get_instr_data f,s,dest,label
178 getuser \f,%sp@(FPS_PC+4)@(0),\dest,\label,%sp@(FPS_PC+4)
179 addq.l #\s,%sp@(FPS_PC+4)
180 .endm
182 .macro fp_get_instr_word dest,label,addr
183 fp_get_instr_data w,2,\dest,\label,\addr
184 .endm
186 .macro fp_get_instr_long dest,label,addr
187 fp_get_instr_data l,4,\dest,\label,\addr
188 .endm
190 /* These macros are used to read from/write to user space
191 * on error we jump to the fixup section, load the fault
192 * address into %a0 and jump to the exit.
193 * (derived from <asm/uaccess.h>)
194 */
195 .macro getuser size,src,dest,label,addr
196 | printf ,"[\size<%08x]",1,\addr
197 .Lu1\@: moves\size \src,\dest
199 .section .fixup,"ax"
200 .even
201 .Lu2\@: move.l \addr,%a0
202 jra \label
203 .previous
205 .section __ex_table,"a"
206 .align 4
207 .long .Lu1\@,.Lu2\@
208 .previous
209 .endm
211 .macro putuser size,src,dest,label,addr
212 | printf ,"[\size>%08x]",1,\addr
213 .Lu1\@: moves\size \src,\dest
214 .Lu2\@:
216 .section .fixup,"ax"
217 .even
218 .Lu3\@: move.l \addr,%a0
219 jra \label
220 .previous
222 .section __ex_table,"a"
223 .align 4
224 .long .Lu1\@,.Lu3\@
225 .long .Lu2\@,.Lu3\@
226 .previous
227 .endm
230 .macro movestack nr,arg1,arg2,arg3,arg4,arg5
231 .if \nr
232 movestack (\nr-1),\arg2,\arg3,\arg4,\arg5
233 move.l \arg1,-(%sp)
234 .endif
235 .endm
237 .macro printf bit=-1,string,nr=0,arg1,arg2,arg3,arg4,arg5
238 #ifdef FPU_EMU_DEBUG
239 .data
240 .Lpdata\@:
241 .string "\string"
242 .previous
244 movem.l %d0/%d1/%a0/%a1,-(%sp)
245 .if \bit+1
246 #if 0
247 moveq #\bit,%d0
248 andw #7,%d0
249 btst %d0,fp_debugprint+((31-\bit)/8)
250 #else
251 btst #\bit,fp_debugprint+((31-\bit)/8)
252 #endif
253 jeq .Lpskip\@
254 .endif
255 movestack \nr,\arg1,\arg2,\arg3,\arg4,\arg5
256 pea .Lpdata\@
257 jsr printk
258 lea ((\nr+1)*4,%sp),%sp
259 .Lpskip\@:
260 movem.l (%sp)+,%d0/%d1/%a0/%a1
261 #endif
262 .endm
264 .macro printx bit,fp
265 #ifdef FPU_EMU_DEBUG
266 movem.l %d0/%a0,-(%sp)
267 lea \fp,%a0
268 #if 0
269 moveq #'+',%d0
270 tst.w (%a0)
271 jeq .Lx1\@
272 moveq #'-',%d0
273 .Lx1\@: printf \bit," %c",1,%d0
274 move.l (4,%a0),%d0
275 bclr #31,%d0
276 jne .Lx2\@
277 printf \bit,"0."
278 jra .Lx3\@
279 .Lx2\@: printf \bit,"1."
280 .Lx3\@: printf \bit,"%08x%08x",2,%d0,%a0@(8)
281 move.w (2,%a0),%d0
282 ext.l %d0
283 printf \bit,"E%04x",1,%d0
284 #else
285 printf \bit," %08x%08x%08x",3,%a0@,%a0@(4),%a0@(8)
286 #endif
287 movem.l (%sp)+,%d0/%a0
288 #endif
289 .endm
291 .macro debug instr,args
292 #ifdef FPU_EMU_DEBUG
293 \instr \args
294 #endif
295 .endm
298 #endif /* __ASSEMBLY__ */
300 #endif /* _ASM_M68K_SETUP_H */