Implement no-fault loads
[qemu/mini2440.git] / dyngen-exec.h
blob9260b6f442979c7b865aa8f6f73eb4f210603e2f
1 /*
2 * dyngen defines for micro operation code
4 * Copyright (c) 2003 Fabrice Bellard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 #if !defined(__DYNGEN_EXEC_H__)
21 #define __DYNGEN_EXEC_H__
23 /* prevent Solaris from trying to typedef FILE in gcc's
24 include/floatingpoint.h which will conflict with the
25 definition down below */
26 #ifdef __sun__
27 #define _FILEDEFED
28 #endif
30 /* NOTE: standard headers should be used with special care at this
31 point because host CPU registers are used as global variables. Some
32 host headers do not allow that. */
33 #include <stddef.h>
35 #ifdef __OpenBSD__
36 #include <sys/types.h>
37 #else
38 typedef unsigned char uint8_t;
39 typedef unsigned short uint16_t;
40 typedef unsigned int uint32_t;
41 // Linux/Sparc64 defines uint64_t
42 #if !(defined (__sparc_v9__) && defined(__linux__)) && !(defined(__APPLE__) && defined(__x86_64__))
43 /* XXX may be done for all 64 bits targets ? */
44 #if defined (__x86_64__) || defined(__ia64) || defined(__s390x__) || defined(__alpha__) || defined(__powerpc64__)
45 typedef unsigned long uint64_t;
46 #else
47 typedef unsigned long long uint64_t;
48 #endif
49 #endif
51 /* if Solaris/__sun__, don't typedef int8_t, as it will be typedef'd
52 prior to this and will cause an error in compliation, conflicting
53 with /usr/include/sys/int_types.h, line 75 */
54 #ifndef __sun__
55 typedef signed char int8_t;
56 #endif
57 typedef signed short int16_t;
58 typedef signed int int32_t;
59 // Linux/Sparc64 defines int64_t
60 #if !(defined (__sparc_v9__) && defined(__linux__)) && !(defined(__APPLE__) && defined(__x86_64__))
61 #if defined (__x86_64__) || defined(__ia64) || defined(__s390x__) || defined(__alpha__) || defined(__powerpc64__)
62 typedef signed long int64_t;
63 #else
64 typedef signed long long int64_t;
65 #endif
66 #endif
67 #endif
69 /* XXX: This may be wrong for 64-bit ILP32 hosts. */
70 typedef void * host_reg_t;
72 #define INT8_MIN (-128)
73 #define INT16_MIN (-32767-1)
74 #define INT32_MIN (-2147483647-1)
75 #define INT64_MIN (-(int64_t)(9223372036854775807)-1)
76 #define INT8_MAX (127)
77 #define INT16_MAX (32767)
78 #define INT32_MAX (2147483647)
79 #define INT64_MAX ((int64_t)(9223372036854775807))
80 #define UINT8_MAX (255)
81 #define UINT16_MAX (65535)
82 #define UINT32_MAX (4294967295U)
83 #define UINT64_MAX ((uint64_t)(18446744073709551615))
85 #ifdef _BSD
86 typedef struct __sFILE FILE;
87 #else
88 typedef struct FILE FILE;
89 #endif
90 extern int fprintf(FILE *, const char *, ...);
91 extern int fputs(const char *, FILE *);
92 extern int printf(const char *, ...);
93 #undef NULL
94 #define NULL 0
96 #if defined(__i386__)
97 #define AREG0 "ebp"
98 #define AREG1 "ebx"
99 #define AREG2 "esi"
100 #define AREG3 "edi"
101 #elif defined(__x86_64__)
102 #define AREG0 "r14"
103 #define AREG1 "r15"
104 #define AREG2 "r12"
105 #define AREG3 "r13"
106 //#define AREG4 "rbp"
107 //#define AREG5 "rbx"
108 #elif defined(__powerpc__)
109 #define AREG0 "r27"
110 #define AREG1 "r24"
111 #define AREG2 "r25"
112 #define AREG3 "r26"
113 /* XXX: suppress this hack */
114 #if defined(CONFIG_USER_ONLY)
115 #define AREG4 "r16"
116 #define AREG5 "r17"
117 #define AREG6 "r18"
118 #define AREG7 "r19"
119 #define AREG8 "r20"
120 #define AREG9 "r21"
121 #define AREG10 "r22"
122 #define AREG11 "r23"
123 #endif
124 #elif defined(__arm__)
125 #define AREG0 "r7"
126 #define AREG1 "r4"
127 #define AREG2 "r5"
128 #define AREG3 "r6"
129 #elif defined(__hppa__)
130 #define AREG0 "r17"
131 #define AREG1 "r14"
132 #define AREG2 "r15"
133 #define AREG3 "r16"
134 #elif defined(__mips__)
135 #define AREG0 "fp"
136 #define AREG1 "s0"
137 #define AREG2 "s1"
138 #define AREG3 "s2"
139 #define AREG4 "s3"
140 #define AREG5 "s4"
141 #define AREG6 "s5"
142 #define AREG7 "s6"
143 #define AREG8 "s7"
144 #elif defined(__sparc__)
145 #ifdef HOST_SOLARIS
146 #define AREG0 "g2"
147 #define AREG1 "g3"
148 #define AREG2 "g4"
149 #define AREG3 "g5"
150 #define AREG4 "g6"
151 #else
152 #ifdef __sparc_v9__
153 #define AREG0 "g5"
154 #define AREG1 "g6"
155 #define AREG2 "g7"
156 #else
157 #define AREG0 "g6"
158 #define AREG1 "g1"
159 #define AREG2 "g2"
160 #define AREG3 "g3"
161 #define AREG4 "l0"
162 #define AREG5 "l1"
163 #define AREG6 "l2"
164 #define AREG7 "l3"
165 #define AREG8 "l4"
166 #define AREG9 "l5"
167 #define AREG10 "l6"
168 #define AREG11 "l7"
169 #endif
170 #endif
171 #elif defined(__s390__)
172 #define AREG0 "r10"
173 #define AREG1 "r7"
174 #define AREG2 "r8"
175 #define AREG3 "r9"
176 #elif defined(__alpha__)
177 /* Note $15 is the frame pointer, so anything in op-i386.c that would
178 require a frame pointer, like alloca, would probably loose. */
179 #define AREG0 "$15"
180 #define AREG1 "$9"
181 #define AREG2 "$10"
182 #define AREG3 "$11"
183 #define AREG4 "$12"
184 #define AREG5 "$13"
185 #define AREG6 "$14"
186 #elif defined(__mc68000)
187 #define AREG0 "%a5"
188 #define AREG1 "%a4"
189 #define AREG2 "%d7"
190 #define AREG3 "%d6"
191 #define AREG4 "%d5"
192 #elif defined(__ia64__)
193 #define AREG0 "r7"
194 #define AREG1 "r4"
195 #define AREG2 "r5"
196 #define AREG3 "r6"
197 #else
198 #error unsupported CPU
199 #endif
201 /* force GCC to generate only one epilog at the end of the function */
202 #define FORCE_RET() __asm__ __volatile__("" : : : "memory");
204 #ifndef OPPROTO
205 #define OPPROTO
206 #endif
208 #define xglue(x, y) x ## y
209 #define glue(x, y) xglue(x, y)
210 #define stringify(s) tostring(s)
211 #define tostring(s) #s
213 #if defined(__alpha__) || defined(__s390__)
214 /* the symbols are considered non exported so a br immediate is generated */
215 #define __hidden __attribute__((visibility("hidden")))
216 #else
217 #define __hidden
218 #endif
220 #if defined(__alpha__)
221 /* Suggested by Richard Henderson. This will result in code like
222 ldah $0,__op_param1($29) !gprelhigh
223 lda $0,__op_param1($0) !gprellow
224 We can then conveniently change $29 to $31 and adapt the offsets to
225 emit the appropriate constant. */
226 extern int __op_param1 __hidden;
227 extern int __op_param2 __hidden;
228 extern int __op_param3 __hidden;
229 #define PARAM1 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param1)); _r; })
230 #define PARAM2 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param2)); _r; })
231 #define PARAM3 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param3)); _r; })
232 #elif defined(__s390__)
233 extern int __op_param1 __hidden;
234 extern int __op_param2 __hidden;
235 extern int __op_param3 __hidden;
236 #define PARAM1 ({ int _r; asm("bras %0,8; .long " ASM_NAME(__op_param1) "; l %0,0(%0)" : "=r"(_r) : ); _r; })
237 #define PARAM2 ({ int _r; asm("bras %0,8; .long " ASM_NAME(__op_param2) "; l %0,0(%0)" : "=r"(_r) : ); _r; })
238 #define PARAM3 ({ int _r; asm("bras %0,8; .long " ASM_NAME(__op_param3) "; l %0,0(%0)" : "=r"(_r) : ); _r; })
239 #else
240 #if defined(__APPLE__)
241 static int __op_param1, __op_param2, __op_param3;
242 #else
243 extern int __op_param1, __op_param2, __op_param3;
244 #endif
245 #define PARAM1 ((long)(&__op_param1))
246 #define PARAM2 ((long)(&__op_param2))
247 #define PARAM3 ((long)(&__op_param3))
248 #endif /* !defined(__alpha__) */
250 extern int __op_jmp0, __op_jmp1, __op_jmp2, __op_jmp3;
252 #if defined(_WIN32) || defined(__APPLE__)
253 #define ASM_NAME(x) "_" #x
254 #else
255 #define ASM_NAME(x) #x
256 #endif
258 #if defined(__i386__)
259 #define EXIT_TB() asm volatile ("ret")
260 #define GOTO_LABEL_PARAM(n) asm volatile ("jmp " ASM_NAME(__op_gen_label) #n)
261 #elif defined(__x86_64__)
262 #define EXIT_TB() asm volatile ("ret")
263 #define GOTO_LABEL_PARAM(n) asm volatile ("jmp " ASM_NAME(__op_gen_label) #n)
264 #elif defined(__powerpc__)
265 #define EXIT_TB() asm volatile ("blr")
266 #define GOTO_LABEL_PARAM(n) asm volatile ("b " ASM_NAME(__op_gen_label) #n)
267 #elif defined(__s390__)
268 #define EXIT_TB() asm volatile ("br %r14")
269 #define GOTO_LABEL_PARAM(n) asm volatile ("larl %r7,12; l %r7,0(%r7); br %r7; .long " ASM_NAME(__op_gen_label) #n)
270 #elif defined(__alpha__)
271 #define EXIT_TB() asm volatile ("ret")
272 #elif defined(__ia64__)
273 #define EXIT_TB() asm volatile ("br.ret.sptk.many b0;;")
274 #define GOTO_LABEL_PARAM(n) asm volatile ("br.sptk.many " \
275 ASM_NAME(__op_gen_label) #n)
276 #elif defined(__sparc__)
277 #define EXIT_TB() asm volatile ("jmpl %i0 + 8, %g0; nop")
278 #define GOTO_LABEL_PARAM(n) asm volatile ("ba " ASM_NAME(__op_gen_label) #n ";nop")
279 #elif defined(__arm__)
280 #define EXIT_TB() asm volatile ("b exec_loop")
281 #define GOTO_LABEL_PARAM(n) asm volatile ("b " ASM_NAME(__op_gen_label) #n)
282 #elif defined(__mc68000)
283 #define EXIT_TB() asm volatile ("rts")
284 #elif defined(__mips__)
285 #define EXIT_TB() asm volatile ("jr $ra")
286 #define GOTO_LABEL_PARAM(n) asm volatile (".set noat; la $1, " ASM_NAME(__op_gen_label) #n "; jr $1; .set at")
287 #elif defined(__hppa__)
288 #define GOTO_LABEL_PARAM(n) asm volatile ("b,n " ASM_NAME(__op_gen_label) #n)
289 #else
290 #error unsupported CPU
291 #endif
293 /* The return address may point to the start of the next instruction.
294 Subtracting one gets us the call instruction itself. */
295 #if defined(__s390__)
296 # define GETPC() ((void*)(((unsigned long)__builtin_return_address(0) & 0x7fffffffUL) - 1))
297 #elif defined(__arm__)
298 /* Thumb return addresses have the low bit set, so we need to subtract two.
299 This is still safe in ARM mode because instructions are 4 bytes. */
300 # define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 2))
301 #else
302 # define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 1))
303 #endif
305 #endif /* !defined(__DYNGEN_EXEC_H__) */